Steam control valve is to compressed air as the power source to the cylinder as the actuator, and by means of electrical valve positioner, converter, solenoid valve, security valve and other accessories to drive the valve, to achieve the amount of switch or proportional adjustment, Automatic control system control signal to complete the regulation of pipeline medium flow, pressure, temperature and other process parameters. Germany Hank (HANK) steam control valve is characterized by simple control, rapid response, and intrinsically safe, no need to take another explosion-proof measures.
The valve type of the control valve is selected
Valve valve body types are many, commonly used valve body has a single seat, through the two-seat, angle, diaphragm, small flow, three links, eccentric rotation, butterfly, sleeve, spherical and so on. In the specific choice, do the following considerations:
1, spool shape structure is mainly based on the selected flow characteristics and imbalance force and other factors to consider.
2, wear resistance When the fluid medium is a high concentration of abrasive particles containing the suspension, the valve internal material to be hard.
3, corrosion resistance As the media is corrosive, try to choose a simple structure of the valve.
4, the temperature of the medium, the pressure when the medium temperature, high pressure and change the big, should be used spool and seat material by the temperature, pressure changes small valve.
5, to prevent flash and cavitation flash and cavitation only produce in the liquid medium. In the actual production process, flash and cavitation will form vibration and noise, shorten the life of the valve, so the choice of the valve should prevent the valve flash and cavitation.
Control valve actuator selection
1, in order to make the normal operation of the control valve, with the implementation of the actuator to produce enough output to ensure a high degree of sealing and valve opening. For the double acting pneumatic, hydraulic, electric actuators, generally do not have a return spring. The magnitude of the force is independent of its direction of operation, so the key to selecting the actuator is to figure out the maximum output force and the torque of the motor.
For a single acting pneumatic actuator, the output force is related to the opening of the valve, and the force on the control valve will also affect the movement characteristics. Therefore, it is required to establish a force balance in the opening range of the entire control valve.
2, the implementation of the type of implementation of the actuator to determine the output, according to the use of environmental requirements, select the appropriate implementing agencies. For the explosion requirements at the scene, should use pneumatic actuators. From the energy-saving point of view, should try to use electric actuators. If the adjustment of high precision, you can choose the hydraulic actuator. Such as the speed adjustment of the power plant transparent machine, the temperature control control of the reactor of the refinery.
The choice of the way the valve action
The action of the control valve is only in the selection of pneumatic actuators only when the role of the way through the positive and negative role of the actuator and the combination of positive and negative valve formed. There are four kinds of combinations in the form of positive (gas type), positive and negative (gas open type), anyway (air open type), anti-anti (gas off type), through the formation of these four combinations of valve action Open and air off two.
For the choice of the way the valve action, mainly from three aspects to consider a) process production safety b) the characteristics of the media c) to ensure product quality, economic losses minimum.
成立于1852年创建于门兴格拉德巴赫（Monchengladbach）是位于德国北莱茵-威斯特法伦州首府杜塞尔多夫市以西的一座城市。于19世纪50年代初德国经济快速发展，由于德国能源短缺，政府在节能方面加大力度，因此HANK(Trouble Less valve没有故障的阀门)公司成立。汉克阀门是以生产高品质、先进的阀门、测量及控制系统而享誉全球的跨国性生产企业，在全球几十个国家拥有子公司及分支机构，公司产品涉及用途：石油、化工、电力、冶金、制药、食品、水处理、市政给排水、天然气、造纸、电子工业、楼宇、机械设备配套等领域。
GERMANY HANK VALVE LIMITED is founded on 1852 in Monchengladbach,which is located at one city in North Rhine in Germany, which is the west of Nordrhein-Westfalen. At the beginning of 1850s, as the rapid development of economic and the shortages of energy in Germany , the government had been in saving energy aspect. On this occasion, HANK Valve (Trouble Less Valve) was established.Hank valve is the world-famous transnational production enterprise,which produces high quality and advanced valve, measurement and control system, and which has its divisions and branches in dozens of countries in the global. The company products user involves the petroleum, the chemical industry, the electric power, the metallurgy, the drugs manufacture, food, the water treatment, the municipal administration to give draining water, the natural gas, the papermaking, the electronics industry, the building, the mechanical device necessary ect..
The conclusion of the valve concept in German Hank valve is resposibility,foresight,innovation. For ourselves resposibility, foresight and focusing on creating unprecendented solution and concept,our company has become the lead of valve manufacturer in the global.标签:   蒸汽调节阀 进口蒸汽调节阀