China Shenzhen Wofly Technology Co., Ltd. Company News

Hook up enables the machine to achieve the desired function by connecting to transmit utilities. Hook up is to connect the utilities (such as water, electricity, gas, chemicals, etc.) provided by the factory to the machine and its accessories through the reserved utilities connection point (port or stick) through pipelines cable. These utilities are used by the machine to meet the process requirements it is paid. After the machine is used, the recyclable water or waste (such as waste water, waste gas, etc.) generated by the machine is connected to the reserved contact of the system through the pipeline, and then transmitted to the plant recovery system or waste gas treatment system. The hookup project mainly includes: CAD, move in, core drill, seismic, vacuum, gas, chemical D.I, PCW, CW, express, electric, drain   GAS HOOK-UP Basic understanding of professional knowledge In semiconductor plants, the so-called hook up of gas pipeline is called "sp1hook up" in terms of buckgas (general gases such as CDA, GN2, pN2, PO2, Phe, par, H2, etc.), and the takeoff point from the outlet point of the gas storage tank of the gas supply source to the sub mainpiping through the mainpiping is called "sp1hook up", which is from the takeoff outlet point to the inlet point of the machine (tool) or equipment, Called secondary configuration (sp2hook up). For specialtygas (special gas such as corrosive, toxic, flammable, heating gas, etc.), its gas supply source is gascabinet. From the g/c outlet point to the primary inlet point of VMB (valve main box.) or VMP (valve main panel) is called sp1hook up, and from the secondary outlet point of VMB or VMP stick to the machine inlet point is called sp2 hook.

  The main components and functions of the binary mixture proportioner equipment of the fully automatic standard gas preparation device of the diversified intelligent gas distribution equipment.     1. Gas flow meter: It is the control mechanism of this system, and its action is directly controlled by the executive structure. It is the key component of mixing and proportioning. 2. Pressure stabilization and pressure reduction control valve: control pressure and flow, mixture pressure main pressure stabilization components。 3. Analyzer: It is the testing mechanism of this equipment and displays the percentage content in the proportioning gas. (External) 4. Switching valve: control the gas on/off and stop the operation of the equipment. 5. pressure sensor: detect the pressure of the gas mixture, and with the valve to adjust the pressure, the upper and lower pressure limit parameters to confirm 6. Mixing tank: Mixing tank of mixed gas, mix each way of gas evenly. 7. Touch screen: display real-time process, gas distribution parameters, alarm parameters, etc. 8. Electrical combination: control and operate the equipment, visually display the work flow and working status. Multi-intelligent gas distribution equipment fully automatic standard gas preparation device 2 elements package mixed gas distribution equipment composition and system design Multi-intelligent gas distribution equipment fully automatic standard gas preparation device 2 elements encapsulated mixed gas distribution equipment gas supply unit       The raw material gas is provided in the form of high-pressure cylinders, and the gas is sent to the corresponding entrance after decompression. When the cylinder gas is less than the pressure range required for gas distribution, sound and light warning will be issued, and the combustible gas pipeline is equipped with a one-way valve to avoid hazards caused by other gases under pressure, so as to ensure the stable operation of proportioning equipment and constant pressure to a large extent. The above is the working principle and technical characteristics of the gas mixer introduced by Wolfly. We hope that we can provide you with a reference.     深圳沃飞科技有限公司是一家专 门从事气体应用系统工程：电子特气系统、实验室气路系统、工业集中供气系统、大宗气体（液体）系统、高纯气体及特种工艺气体二次配管系统、化学品输送系统、纯水系统提供从技术咨询、整体规划、系统设计、选定设备、预制组件、项目现场安装建设、整体系统检测、维护保养等全套工程技术服务和配套产品于一体的高新技术企业。 工程项目覆盖半导体、集成电路、平板显示、光电、汽车、新能源、纳 米、光纤、微电子、石油化工、生物医药、各类实验室、研究所、标准检测等高科技行业；为客户提供高纯介质输送系统全套解决方案；逐步成为行业先进的整体系统供应商。 公司拥有奥飞克（AFK®）品牌，产品畅销于国内及海外26个国家，并代理德国WITT(威特)、美国布劳宁、Atlascopco、韩国MKP质量流量计等品牌。沃飞科技主要销售的产品有工业气体减压器、半导体减压器、调压阀、隔膜阀、波纹管阀、不锈钢阀门、卡套接头、VCR接头、不锈钢管、高压软管、阻火器、止回阀、过滤器、仪器仪表、气体探测器、分析仪器、纯化器、气体配比器、低温阀类、供气汇流排、BSGS、GC、GR、VDB/P、VMB/P、SCRUBBER等各种气体相关设备和配件；为了追求更好品质并给客户提供更高更安 全的技术，严格按照ISO9001标准执行各项管理。气体报警器：http://www.szwofei.com

  Automatic gas mixing and proportioning device hydrogen-argon gas mixer oxygen-argon mixing and proportioning cabinet hydrogen-nitrogen mixing equipment using imported mass flow controller controller gas volume flow for binary mixing and proportioning, while equipped with hydrogen analyzer online monitoring of the single or multi-gas concentration of mixed gases to ensure the proportion of the ratio, the proportion of mixed gases in the hydrogen analyzer analysis of the ZUI range can be set at will, simple, convenient and intuitive adjustment.   Automatic gas mixing proportioner hydrogen-argon gas mixer oxygen-argon mixing proportioner hydrogen-nitrogen gas mixing equipment welding gas mixture, gas shielded welding, is a new welding process developed on the basis of the widespread use of manual arc welding and submerged arc automatic welding. At present, the welding shielding gas mixture commonly used in industry can be roughly divided into three categories: binary mixture, ternary mixture and quadratic mixture. Binary mixtures that are often used are Ar-He, Ar-H2, Ar-O2, Ar-CO2, CO2, O2, N2, H2, etc.; ternary mixtures are Ar-He-CO2, Ar-He-N2, N2, Ar-He-O2, Ar-O2, CO, etc.; quaternary mixtures are used less and are mainly formulated from Ar, He, H2, O2, N2, CO2, etc. The ratio of the components of each type of gas mixture can be changed and combined, mainly by the welding process, welding material welding model and other factors to decide. Generally speaking, the higher the requirements for the quality of the welding seam, the higher the requirements for the purity of the unit gases used to prepare the gas mixture. In Europe and America, the purity of Ar, H2, N2 and other gases used for gas mixture is 99.999%, He is 99.996%, CO2 is 99.99%, and moisture is usually regarded as harmful substance, and H20＜10mg/m3 is required. fully automatic gas mixture distribution device is widely used in galvanizing line industry, float glass and other industries that need large volume of gas mixture. Automatic gas mixing and proportioner hydrogen-argon gas mixer oxygen-argon mixing and proportioning cabinet hydrogen-nitrogen mixing equipment control mode. It adopts famous brand programmer and touch screen control, which can display the information of proportioning process, proportioning ratio, working pressure and alarm parameters in real time, so that the operation becomes easy and clear. The control adopts the program controller and mass flow controller to do communication control, which ensures the accuracy of the proportioning, and the equipment is equipped with manu     Automatic gas mixing and proportioner hydrogen-argon gas mixer oxygen-argon mixing and proportioning cabinet hydrogen-nitrogen mixing equipment equipment main components and functions.   1.Mass flow controller:it is the control mechanism of this system, and its action is directly controlled by the actuator. It is the key component of hydrogen and nitrogen gas mixing and proportioning.   2.Hydrogen divider: it is the detection mechanism of this equipment (small flow meter is the flow controller of hydrogen divider), which displays the percentage content of hydrogen in the proportioning gas and converts the percentage content of hydrogen into 4-20mA current signal.   3.Intelligent display regulator (Allegra): it is the controller of the equipment, which compares the current signal of the hydrogen divider with the set value, and the calculation result is converted into the 4-20mA current signal needed by the actuator. The intelligent display regulator has a mixture gas concentration alarm output.   4.Mixing tank (304):mixing and proportioning hydrogen and nitrogen and doing small buffer role.   5. Proportional flow meter:the use of mixed proportional gas real-time flow rate is displayed. 6.Pressure controller:there is an alarm output for nitrogen pressure, and close the hydrogen import, to ensure that the working point hydrogen concentration will not exceed the standard. Automatic gas mixing proportioner hydrogen-argon gas mixer oxygen-argon mixing proportioning cabinet hydrogen-nitrogen mixing equipment process flow.   Process steps and control methods 1.Adopt imported mass flow controller to control the volume flow of gas for mixing and proportioning of binary or ternary gases, to ensure the reliability of equipment operation and proportioning stability while working with high precision. (Ternary gas with the corresponding standard gas to do the same proportion of calibration, the actual measurement of gas display data as a basis for comparison data detection or online monitoring of the online chromatograph fine-tuning mass flow meter equipment parameters, so that the most / final mixing ratio within 0.1%, the specific data to the resolution of the chromatograph or gas analyzer as a benchmark) 2. Control mode: PLC of famous brand and touch screen control are adopted to display the information of proportioning process, proportioning ratio, working pressure and alarm parameters in real time, so that the operation becomes easy and clear. The control adopts PLC and mass flow controller to do communication control to ensure the accuracy of the proportioning, and the equipment is equipped with manual operation display instrument, which can manually adjust the proportioning ratio. The above is the introduction of Wofei Technology about how to use the gas mixture proportioning cabinet correctly. I hope it can provide reference for you.   深圳沃飞科技有限公司是一家专门从事气体应用系统工程：电子特气系统、实验室气路系统、工业集中供气系统、大宗气体（液体）系统、高纯气体及特种工艺气体二次配管系统、化学品输送系统、纯水系统提供从技术咨询、整体规划、系统设计、选定设备、预制组件、项目现场安装建设、整体系统检测、维护保养等全套工程技术服务和配套产品于一体的高新技术企业。 工程项目覆盖半导体、集成电路、平板显示、光电、汽车、新能源、纳 米、光纤、微电子、石油化工、生物医药、各类实验室、研究所、标准检测等高科技行业；为客户提供高纯介质输送系统全套解决方案；逐步成为行业先进的整体系统供应商。 公司拥有奥飞克（AFK®）品牌，产品畅销于国内及海外26个国家，并代理德国WITT(威特)、美国布劳宁、Atlascopco、韩国MKP质量流量计等品牌。沃飞科技主要销售的产品有工业气体减压器、半导体减压器、调压阀、隔膜阀、波纹管阀、不锈钢阀门、卡套接头、VCR接头、不锈钢管、高压软管、阻火器、止回阀、过滤器、仪器仪表、气体探测器、分析仪器、纯化器、气体配比器、低温阀类、供气汇流排、BSGS、GC、GR、VDB/P、VMB/P、SCRUBBER等各种气体相关设备和配件；为了追求更好品质并给客户提供更高更安 全的技术，严格按照ISO9001标准执行各项管理。气体配比器：http://www.szwofei.com

  High-purity gas piping technology is an important part of high-purity gas supply system, which is the key technology to deliver the required high-purity gas to the point of use and still maintain the qualified quality; High-purity gas piping technology includes the correct design of the system, the selection of fittings and accessories, construction and installation, and testing. In recent years, the increasingly strict requirements on the purity and impurity content of high-purity gases in the production of microelectronics products represented by large-scale integrated circuits have made the piping technology of high-purity gases increasingly concerned and emphasized. The following is a brief overview of high-purity gas piping from material selection of construction, as well as acceptance and daily management.   Types of common gases Classification of common gases in the electronics industry： Common gases（Bulk gas）: hydrogen (H2), nitrogen (N2), oxygen (O2), argon (A2), etc. Specialty gases are SiH4 ,PH3 ,B2H6 ,A8H3 ,CL ,HCL ,CF4 ,NH3, POCL3, SIH2CL2 SIHCL3 ,NH3, BCL3 ,SIF4 ,CLF3 ,CO ,C2F6, N2O ,F2, HF ,HBR SF6 ...... etc. The types of special gases can generally be classified as corrosive gas, toxic gas, flammable gas, combustible gas, inert gas, etc. The commonly used semiconductor gases are generally classified as follows. (i) Corrosive / toxic gas: HCl , BF3, WF6, HBr , SiH2Cl2, NH3, PH3, Cl2, BCl3 ...etc. (ii) Flammability gas: H2, CH4, SiH4, PH3, AsH3, SiH2Cl2, B2H6, CH2F2, CH3F, CO...etc. (iii) combustibility gas: O2, Cl2, N2O, NF3 ... etc. (iv) Inert gas: N2, CF4, C2F6, C4F8, SF6, CO2, Ne, Kr, He...etc. Many semiconductor gases are harmful to human body. In particular, some of these gases, such as SiH4 spontaneous combustion, as long as a leak will react violently with the oxygen in the air and begin to burn; and AsH3 highly toxic, any slight leakage may cause the risk of human life, it is because of these obvious dangers, so the requirements for the safety of the system design is particularly high.   Application scope of gases As an important basic raw material of modern industry, gas products are widely used, and a large number of common gases or special gases are used in metallurgy, steel, petroleum, chemical industry, machinery, electronics, glass, ceramics, building materials, construction, food processing, medicine and medical sectors. The application of gas has an important impact on the high technology of these fields in particular, and is its indispensable raw material gas or process gas. Only with the needs and promotion of various new industrial sectors and modern science and technology, the gas industry products can be developed by leaps and bounds in terms of variety, quality and quantity. Gas application in microelectronics and semiconductor industry The use of gas has always played an important role in the semiconductor process, especially the semiconductor process has been widely used in various industries, from the traditional ULSI, TFT-LCD to the current micro-electro-mechanical (MEMS) industry, all of which use the so-called semiconductor process as the manufacturing process of products. The purity of the gas has a decisive impact on the performance of components and product yields, and the safety of the gas supply is related to the health of personnel and the safety of plant operations. The significance of high-purity piping in high-purity gas transport In the process of stainless steel melting and making material, about 200g of gas can be absorbed per ton. After the processing of stainless steel, not only its surface sticky with various contaminants, but also in its metal lattice also absorbed a certain amount of gas. When there is airflow through the pipeline, the metal absorbs this part of the gas will re-enter the airflow, polluting the pure gas. When the airflow in the tube is discontinuous flow, the tube adsorbs the gas under pressure, and when the airflow stops passing, the gas adsorbed by the tube forms a pressure drop to resolve, and the resolved gas also enters the pure gas in the   General concept of clean technology for transmission and distribution pipelines Highly pure and clean gas body transmission with piping means that there are certain requirements or controls for three aspects of the gas to be transported. Gas purity: The content of impurity atmosphere in the gGas purity: The content of impurity atmosphere in the gas, usually expressed as a percentage of gas purity, such as 99.9999%, also expressed as the volume ratio of impurity atmosphere content ppm, ppb, ppt. Dryness: the amount of trace moisture in the gas, or the amount called wetness, usually expressed in terms of dew point, such as atmospheric pressure dew point -70. C. Cleanliness: the number of contaminant particles contained in the gas, particle size of µm, how many particles/M3 to express, for compressed air, usually also expressed in terms of how many mg/m3 of unavoidable solid residues, which covers the oil content. Pollutant size classification: pollutant particles, mainly refers to pipeline scouring, wear, corrosion generated by metal particles, atmospheric soot particles, as well as microorganisms, phages and moisture-containing gas condensation droplets, etc., according to the size of its particle size is divided into a) Large particles - particle size above 5μm b) Particle - material diameter between 0.1μm-5μm c) Ultra-micro particles - particle size less than 0.1μm. In order to enhance the application of this technology, to be able to perceptual understanding of particle size and μm units, a set of specific particle status is provided for reference   The following is a comparison of specific particles Name /Particle size (µm) Name /Particle size (µm) Name/ Particle size µm Virus 0.003-0.0 Aerosol 0.03-1 Aerosolized microdroplet 1-12 Nuclear fuel 0.01-0.1 Paint 0.1-6 Fly ash 1-200 Carbon black 0.01-0.3 Milk powder 0.1-10 Pesticide 5-10 Resin 0.01-1 Bacteria 0.3-30 Cement dust 5-100 Cigarette smoke 0.01-1 Sand dust 0.5-5 Pollen 10-15 Silicone 0.02-0.1 Pesticide 0.5-10 Human hair 50-120 Crystallized salt 0.03-0.5 Concentrated sulfur dust 1-11 Sea sand 100-1200  

  1 Domestic and foreign development present situation Pipeline CO2 transport has been applied abroad, with about 6,000 km of CO2 pipelines in the world, with a total capacity of more than 150 Mt/a. Most of the CO2 pipelines are located in North America, while others are in Canada, Norway and Turkey. The majority of long-distance, large-scale CO2 pipelines abroad use supercritical transport technology. The development of CO2 pipeline transmission technology in China is relatively late, and there is no mature long-distance transmission pipeline yet. These pipelines are internal oilfield gathering and transmission pipelines, and are not considered CO2 pipelines in the real sense.       2 Key technologies for CO2 transport pipeline design 2.1 Requirements for gas source components To control the gas components entering the transmission pipeline, the following factors are mainly considered: (1) to meet the demand for gas quality in the target market, such as for EOR oil recovery, the main requirement is to meet the requirements of mixed-phase oil drive. ②To meet the requirements of safe pipeline transmission, mainly to control the content of toxic gases such as H2S and corrosive gases, in addition to strictly controlling the water dew point to ensure that no free water precipitates during the pipeline transmission. (3) Comply with national and local laws and regulations on environmental protection; (4) On the basis of meeting the first three requirements, reduce the cost of gas treatment upstream as much as possible.     2.2 Selection and control of transport phase state In order to ensure the safety and reduce the operating cost of CO2 pipeline, it is necessary to control the pipeline medium to maintain a stable phase state during the transmission process. In order to ensure the safety and reduce the operating cost of CO2 pipelines, it is necessary to first control the pipeline medium to maintain a stable phase state during the transmission process, so the gas phase transmission or supercritical state transmission is generally chosen. If gas-phase transport is used, the pressure should not exceed 4.8 MPa to avoid pressure variations between 4.8 and 8.8 MPa and the formation of two-phase flow. Obviously, for large volume and long distance CO2 pipelines, it is more advantageous to use supercritical transmission considering engineering investment and operation cost. 2.3 Routing and area hierarchy In the selection of CO2 pipeline routing, in addition to conforming to local government planning, avoiding environmentally sensitive points, cultural relic protection zones, geological disaster areas, overlapping mine areas and other areas, we should also focus on the relative location of the pipeline and the surrounding villages, towns, industrial and mining enterprises, key animal protection zones, including wind direction, terrain, ventilation, etc. While selecting the routing, we should analyze the high consequence areas of the pipeline, and at the same time take corresponding protection and early warning measures. When choosing the route, it is recommended to use satellite remote sensing data for terrain inundation analysis, so as to determine the high consequence area of the pipeline. 2.4 Principles of valve chamber design In order to control the amount of leakage when the pipeline rupture accident occurs and to facilitate pipeline maintenance, a line cut-off valve chamber is generally set at some distance on the pipeline. The valve chamber spacing will lead to a large amount of pipe storage between the valve chamber and a large amo   2.6 Special requirements for equipment and materials (1) Sealing performance of equipment and valves. (2) Lubricant. (3) Pipe stop cracking performance.  

  1. Laboratory gas types ed in laboratories with precision instruments, experimental gases (chlorine gas) and gas, compressed air, etc. used in the experimental gas (chlorine gas) and auxiliary experiments in the laboratory, compressed air, etc. High -pure gases are mainly gas (nitrogen, carbon dioxide), inert gas (grillets, sorbe), flammable gas (hydrogen, acetylene), and help gas (oxygen), etc. Laboratory gas is mainly provided by gas cylinders. Individual gases can be provided by gas generators. Commonly used bonds to distinguish and sign: oxygen cylinders (sky blue black), hydrogen cylinders (dark green red words), nitrogen cylinders (black yellow characters), compressed air cylinders (black white), acetylene bottle (white red) carbon dioxide bottle ( Green and white), cylinders (gray green), cylinder cylinders (brown).       2. Laboratory gas supply method The laboratory gas supply system can be divided into decentralized gas supply and concentrated gas supply according to its supply method 2.1.Diversified gas supply is to place gas cylinders or gas generators in each instrument analysis room, close to the instrumental gas point, convenient use, saving gas, and less investment; Use explosion -proof gas cylinder cabinets, and to be alarm and exhaust function. Alarm is divided into combustible gas alarm and non -combustible gas alarm. The gas cylinder cabinet should have a gas cylinder safety prompt sign, and the gas cylinder safety fixed device. 2.2. Concentrated gas supply is a variety of gas cylinders that need to be used by various experimental analysis instruments, all of which are placed in independent gas cylinders outside the laboratory for centralized management. Various types of gases are transported in the form of pipelines between gas cylinders and according to different experiments according to different experiments. The gas use of the instrument is transported to different experimental instruments in each laboratory. The entire system includes the pressure control part of the gas source set pressure (convergence row), the gas pipeline (EP -level stainless steel pipe), the secondary pressure regulating diversion part (function column), and the terminal part (connector, cut -off valve) connected to the instrument. The entire system requires good gas tightness, high cleanliness, durability, and safety and reliability, which can meet the requirements of experimental instruments for continuous use of various types of gases. Gas pressure and traffic are adjusted throughout the entire process to meet the requirements of different experimental conditions. Concentrated gas supply can realize the centralized management of gas sources, stay away from the laboratory to ensure the safety of the experiments; however, the gas supply pipeline leads to waste gas, and the gas source will be opened or closed to the gas cylinder, which is no   3. Safety specifications between gas cylinders and gas cylinders 3.1. The gas cylinder should be dedicated to the bottle, and other types of gas cannot be modified at will. 3.2. The gas cylinder room is strictly forbidden to be close to fire sources, heat sources, and corrosive environments. 3.3. The gas cylinder room is not allowed to use explosion -proof switches and lamps, and bright fires are prohibited around. 3.4. The gas cylinder room should have ventilation equipment to keep it cool. At the top of the gas cylinder room, there should be leakage holes to prevent the gathering of hydrogen. 3.5. The empty bottle and the solid bottle are placed. The flammable and explosive cylinder of the gas cylinder should be isolated from the gas cylinder. 3.6. The attachments such as the bottle valve, the receiving screw and the pressure decompression valve are intact, and the dangerous situations such as leakage, sliding wire, and acupuncture pins are generally not mixed. 3.7. When the gas cylinder must be stored upright when storing and use, when the working location is not fixed and moving frequently, it should be fixed on a special hand -to -hand car to prevent dumping. It is strictly forbidden to use it. 3.8. The gas cylinder is strictly prohibited from the fire source, thermal source and electrical equipment, and the distance from the light fire is not less than 10m. When used at the same time, the oxygen cylinder and acetylene gas cylinder cannot be placed together 3.9. The empty bottle after use should be moved to the empty bottle storage area, and the label of the empty bottle should be prohibited. 3.10. The gas in the gas cylinder should not be used, and a certain amount of residual pressure must be maintained. 3.11. The gas cylinder must be tested on a regular basis. The test cycle of the use of oxygen cylinders and acetylene gas cylinders must not be used. The testing cycle of liquefied petroleum cylinders is 3 years, and the testing cycle of the cylinder and nitrogen cylinder is 5 years. 3.12. The cylinder sho   4. Gas pipeline design specification 4.1. Yiming, hydrogen, oxygen and gas pipelines, and various gas pipelines in the laboratory. When the pipeline shaft and pipeline technology layer is equipped with hydrogen, oxygen, and gas pipelines, there should be ventilation measures of 1 ~ 3 times/h. 4.2. The general laboratory designed according to the standard unit combination, various gas pipelines should also be designed according to the standard unit combination. 4.3. The gas pipes of the laboratory wall or floor should be laid in the embedded sleeve, and the pipe section in the sleeve should not have welds. Non -combustible materials are used between the pipeline and the sleeve. 4.4. The end of the hydrogen and oxygen pipelines should be set up on the highest point. The empty tube should be above 2m above the layer and should be located in the lightning protection zone. Sample points and blowouts should also be provided on the hydrogen pipeline. The position of the empty pipe, sampling port and blowing mouth should meet the requirements of gas blowing and replacement in the pipeline. 4.5. Hydrogen and oxygen pipelines should have a ground -to -electrical grounding device. The grounding and cross -connection measures with grounding requirements shall be implemented in accordance with relevant national regulations.   5. Pipeline layout requirements 5.1. The pipelines that transport dry gases should be installed horizontally. The pipelines that transport the humid gas should be not less than 0.3%of the slope, and the slope is to the condenser liquid collector. 5.2. Oxygen pipelines and other gas pipelines can be laid in the same frame, and the distance between the distance must not be less than 0.25m. Oxygen pipeline should be above other gas pipelines except the oxygen pipeline. 5.3. When the hydrogen pipeline and its abundant gas pipeline are laid in parallel, the spacing should not be less than 0.50m; when the intersection is laid, the spacing should not be less than 0.25m. When laying layers, the hydrogen pipeline should be above. Indoor hydrogen pipes should not be laid in the ditch or buried directly. Do not pass a room that is not applicable. 5.4. Gas pipes must not be laid with cables and store lines. 5.5.Gas pipes should be seamless steel pipes. Gas with a purity of gas is greater than or equal to 99.99%of the gas pipelines, stainless steel pipes, copper pipes or seamless steel pipes. 5.6. Gas pipes should be seamless steel pipes. Gas with a purity of gas is greater than or equal to 99.99%of the gas pipelines, stainless steel pipes, copper pipes or seamless steel pipes. 5.7. The connection section of the pipeline and the equipment should be metal pipes. If it is a non -metal hose, polytrafluoroethylene tubes and polyvinyl chloride tubes should be adopted, and latex tubes shall not be used. 5.8. The connection section of the pipeline and the equipment should be metal pipes. If it is a non -metal hose, polytrafluoroethylene tubes and polyvinyl chloride tubes should be adopted, and latex tubes shall not be used. 5.9. Materials of valves and attachments: Copper materials must not be used for hydrogen and gas pipelines. Other gas pipelines can be made of copper, carbon steel and forged cast iron. The attachments and instruments used in hydrogen and oxygen pipelines must be a special product of the medium, which must not b

  1. Corrosion 1.1 Wet corrosion For example, HCL and CL2 can easily corrode the cylinder when there is water. The introduction of water may be derived from the customer's use. It is not closed by the valve. It may also have similar corrosion in NH3, SO2, and H2S. Even dry hydrogen chloride and chlorine gas cannot be stored in aluminum alloy gas cylinders at high concentrations. 1.2 Stress corrosion When Co, CO2, and H2O coexist, carbon steel cylinders are easily corroded. Therefore, when preparing standard gases containing CO and CO2, the gas cylinder must be dried, and the raw material gas must also use high purity gases or no moisture -free gas.       2. Dangerous compounds 2.1 Acetylene and copper -containing copper alloy reaction to generate metal organic compounds. 2.2 Single halogen -based hydrocarbons CH3CL, C2H5CL, CH3BR, etc. cannot be installed in aluminum alloy cylinders. They will slowly form a metal organic halide with aluminum and explode when they encounter water. If the gas cylinder contains moisture, the prepared standard gas can be detected in the standard gas. 3. The explosion reaction causes the explosion reaction due to the incompatibility of the gas and valve sealing materials or pipeline materials. If the oxidized gases cannot choose a valve with combustible sealing materials. This is easy to be ignored when standard gas preparation. This includes how to calculate the oxidation of standard gas    

  1.Conditions and Preparations for Testing Pressur 1.1 The construction of the pipeline system is completed, and it meets the design requirements and specifications. 1.2 The welding work is completed after the mixing rack and the pipe rack are installed. The ray detection has fully reached the design specifications and passed the inspection. The welds and other inspection areas that should be tested are not painted and insulated. 1.3 The test pressure gauge has been verified, and the accuracy is 1.5 levels. The full -scale value of the table should be 1.5 to 2 times the measured to the maximum pressure. 1.4 Before the test, you cannot participate in the test system, equipment and accessories, and add a white paint label with a white paint label with a blind plate. 1.5 Water should be used for cleaning water, and the content of chloride in the water must not exceed 25 × 10-6 (25ppm). 1.6 Temporary pipeline reinforcement for tests should be confirmed and reliable after inspection. 1.7 Check whether all valves on the pipeline are open, whether the pads are added, and stop the valve core of the valve core, and then reset until it is blown.   2.Process Pipeline Test Pressure Process 2.1. Pipeline test pressure is 1.5 times the design pressure. 2.2. When the pipeline and equipment are tested as a system, the test pressure of the pipeline is equal to or less than the test pressure of the device. Essence 2.3. When water injection of the system, the air should be exhausted. The air emission point should be at the highest point of the pipeline and add the exhaust valve. 2.4. Pipelines with large positions should be measured into the test pressure of the test medium. The test pressure of the liquid pipeline should be subject to the highest point pressure, but the lowest point of the minimum point must not exceed the tolerance of the pipeline composition. 2.5. When test pressure, the boost should be performed slowly. After the test pressure is reached, the pressure pressure should be 10 minutes. With no leakage, no deformatio

  In order to improve work efficiency and safety production, a single air supply of a single gas supply of a single gas supply is concentrated, and a plurality of gases are placed (high-pressure steel bottles, low temperature Duva cans, etc.) to achieve centralized gas supply. Generally installed in separate buildings or plant adjacent. Gas manifold is suitable for enterprises with large gas consumption, whose principle is to input bottle gas through the cartridge and hose to the main pipe, under reduced pressure, adjustment, and transfer to the use of the construction site through the pipeline, which is widely used in the hospital , Chemical, welding, electronic and research units. Let's introduce the safe use and maintenance of gas bus bar.       1.Open: The cut -off valve before the pressure reduction should be opened slowly to prevent suddenly opening, due to the high pressure shock that the pressure decompression device fails. The pressure gauge pointed out the pressure, and then clockwise rotating the decompressor to adjust the screw and the low pressure gauge to point out the required output pressure, turn on the low pressure valve, and supply the gas to the working point. 2. When installing, pay attention to the cleaning of the connection part to prevent the debris from entering the decompressor. 3. The leakage of the connection part is generally due to insufficient thread tightening, or the cushion is damaged. 4. Stop the gas supply, just adjust the screw with a full loosening decompression device. After the low pressure meter is zero, then turn off the deadline valve, so that the decompressor will not be pressured for a long time. 5. The high -voltage cavity of the decompression device is equipped with a safety valve. When the pressure exceeds the use value, the exhaust is automatically turned on, and the pressure drops to the use value to close it by itself. Do not pull the safety valve. 6. The phenomenon of discovering that the decompression is damaged or leaked, or the pressure of the low pressure gauge continues to rise, and the pressure gauge cannot return to zero. It should be repaired in time. 7. Do not install gas flowing in places with corrosive media. 8. Gas flowing flow must not be inflated in the air cylinder. 9. The flow stream should be used in accordance with regulations, not mixed to avoid danger. 10. Oxygen convergence is strictly forbidden to contact oil to avoid burning and fire.

  Whenever the integrated circuit is manufactured, the industry will mostly speak the wafer, lightning machine and other equipment. However, in the field of chip manufacturing, there is a region that is often easy to neglect, but it is a gas.   The reason why electronic gases is especially critical, and it is inseparable from it during chip manufacturing. A silicon wafer has a few processes such as photolithography, film, etching, cleaning, injection, etc. after polishing treatment and a series of strict screenings, and nearly a thousand steps can eventually become a chip. During this process, almost every link is less inclined. The package generated from a single chip to the last device is also inseparable from the electronic gas. The electronic gas involved in the manufacture of semiconductor devices has very stringent requirements in purity and precision. Once a particular impurity exceeds the standard, it may directly lead to the serious defects of the product, even because of the diffusion of unqualified gases, the entire production line is contaminated or scrapped. Therefore, it can be seen that the quality of the electronic gas directly affects the performance of the semiconductor device, and also forms a high technical barrier for gas suppliers. Throughout the past, some of the high pure gases, rare gas and mixed gases needed by the electronic manufacturing industry need to rely on imports, and Woy Fei Technology Wofly breaks this situation in innovation. In the service electronics manufacturing industry, companies have experienced experienced experience, always applied to special gases and bulk gases in the electronic semiconductor field as key R & D directions, and can supply all kinds of high-purity high-purity gases in many well-known electronic manufacturers around the world. Including nitrogen, hydrogen, oxygen, argon, helium, etc., ensuring the quality of electronic gas supply in the production of semiconductor devices.     Under the premise of system security, air supply, continuous and uninterrupted, the company strictly ensures the quality and reliability of the gas, including the pressure, dew, impurities, granularity, flow rate, etc., each step. Strict technical parameters requirement and quality control measures to ensure stable product quality during transportation and use, avoid secondary pollution. In addition, the company can provide one-stop overall solution for the electronic manufacturing industry to meet the needs of various process links. At the same time, rich industry service experience and efficient implementation, so that the company can fully meet the demanding air needs of the electronic manufacturing industry, shorten the supply cycle, reduce cost, and improve supply stability. With the increasing increase in China's overall film wafers in recent years, the original wafer factory capacity expansion and technology upgrade, electronic gas ushered in a new round of growth opportunities and challenges. Therefore, Wo Fei Technology actively responds to the challenges of the chip technology leap on gas quality. With its rich application experience, leading process level and reliable supply, actively support the development of the industry, and join hands with many domestic and foreign leading integrated circuits. Manufacturing enterprises jointly explore the key meaning of electronic gas supply, to help the quality supply of electronic gas required in electronic equipment development environments, and fully promote the progress of the semiconductor industry, empower "China Core" Strategy.  

Wofly focuses on Market Opportunity of Gas Pipeline Valve Industry, Starting Domestic Replacement Strategy.   After the era of the post, the global economy began to enter the steady recovery phase. The continuous and stable growth of the total global economic volume has driven the development of gas application industries such as oil and gas, semiconductor, and chemicals, causing gas valve parts to achieve faster development, the market is active. After the manufacturing enterprise and multi-party joint efforts and independent innovation, my country's gas valve-related manufacturing enterprises have achieved breakthrough progress, and some domestications have replaced imports, but also break the foreign monopoly, driving the industry transformation and upgrading and technology progress.   As leading gas suppliers, Wofly Technology has superior design and manufacturing experience in gas pipeline engineering valve, Brand reputation, product and service agreement, and a number of products realize localization.   WCOS11Series Automatic Changeover Manifold, WV4 Series low pressure manual/pneumatic diaphragm valve, WV8series low pressure/pneumatic diaphragm valve, WV8Hseries high pressure manual/pneumatic diaphragm valve, WV4 series high pressure manual/pneumatic etc. The WV4 series low-pressure manual / pneumatic diaphragm valve achieves more durable, corrosion, response speed, and long life. The valve member is sealed with a metal to provide no leakage service in vacuum to high pressure; the internal volume is small, fully purged. All-in-wrapped valve seat design, superior anti-expansion and anti-pollution capability; Nickel cobalt alloy film Tablet, with higher durability and corrosion resistance; helium test leakage rate

Main composition and function of binary mixed biber equipment - Wofly Dual gas mixer. Multi-smart gas free equipment fully automatic gas preparation devices Main components and functions of binary hybrid ratiker equipment. Main composition and function of binary mixed biber equipment - Wo Fei Dual gas mixer.   1. Gas flow meter: It is the control mechanism of this system, and its actions are directly active. It is a key component of a mixed ratio. 2. Regulated pressure reduction control valve: control pressure and flow, main regulator components of mixed gas pressure. 3. Analyzer: It is the detection mechanism of this device, showing the percentage content in the matching gas. (External) 4. Switching valve: Controlled the penetration of the gas, stop the device operation. 4.1 Gas flow meter: It is the control mechanism of this system, and its actions are directly active. It is a key component of a mixed ratio. 4.2Regulated pressure reduction control valve: control pressure and flow, main regulator components of mixed gas pressure. 4.3 Analyzer: It is the detection mechanism of this device, showing the percentage content in the matching gas. (External) 4.4 Switching valve: Controlled the penetration of the gas, stop the device operation. 4.5 Pressure sensor: detect mixture pressure, and match the valve adjustment pressure, pressure upper and lower limit parameters confirm 4.6 Mixing tank: mixed gas mixing tank, mix all the gas uniform. 4.7 Touch screen: Display real-time flow, gas supply parameters, alarm parameters, etc. 4.7 Electrical portfolio: Control the operating equipment, intuitive display workflow, working status. Multi-intelligent gas supply equipment fully automatic airfront device 2 yuan package mixed gas supply equipment composition and system design Multivariate smart gas free equipment fully automatic airway equipment 2 yuan package mixing gas supply unit     The raw material gas is provided in the form of high pressure gas cylinders, and the pressure reduction is pressing to the corresponding entry, the connection is completed, and the equipment intake valve is opened after detecting without leakage. After the system is confirmed, the pressure is started after the pressure is correct, and the pressure of the pressure-reducing regulator valve directly passes through the pressure gauge, and intuitively displays the pressure. When the steel bottle gas is less than the pressure required for the gas, an acoustic warning, a combustible gas pipelines set a single-to-valve to avoid harm to other gas undervoltosis, thereby operating stabilization, and the pressure is constant.