Control pneumatic valve development history in China

control started relatively late in the industrial production of pneumatic valve. At the beginning of the century s development single-seat pneumatic valve, two-seater pneumatic valve, etc. Series of products, mainly in the former Soviet union's imitation. Behind the machinery industry, the machining accuracy is low, therefore, a large number of leakage of product, but is still could satisfy the control requirements of the general industrial production process. Years, with industrial production, the demand expansion of industrial process control, some control pneumatic valve products can not meet the requirement of the production process control, such as high pressure, high pressure drop, low temperature, high temperature and corrosion control requirements and other media. To this end, the number of large-scale petrochemical enterprises in the introduction of equipment, but also introduced a number control pneumatic valve, for example, with a balanced pneumatic valve, eccentric rotating pneumatic valve sets, for domestic manufacturers to control pneumatic valve pointed out the direction of development. Therefore, s, some manufacturers have begun to copy the eccentric rotating pneumatic valve etc. ? Years, as China's reform and opening-up policy, the implementation and control of pneumatic valve manufacturers implement the introduction of foreign famous company control pneumatic valve technology and product, the number of varieties of significant improvement and quality control of pneumatic valve. On the sleeve, for example, pneumatic valve, eccentric rotating pneumatic valve production, and began the small precision control of the development of pneumatic valve. With large power plants and other industrial projects, and has also developed the electro-hydraulic actuator, long stroke actuators and actuators, etc. , in order to meet the large thrust and thrust, long stroke control requirements, such as all kinds of large moment. Years, pneumatic control valve industry of China and absorb foreign advanced technology and a joint venture enterprise and foreign investment after the rapid development of the number of control pneumatic valve factory has produced fill in blank unique product of some special industrial control, pneumatic control valve industry in China has made great improve, reduce the gap with foreign. With the application of field bus technology in l century, the use of field bus technology, pneumatic control valve products, some foreign fieldbus control pneumatic valve and related products, such as intelligent pneumatic valve positioner, start in a new project application, some domestic manufacturers have begun to develop products. Characteristics of development control pneumatic valve review the history of the development control pneumatic valve, pneumatic control valve is developed the following features. (1) control of pneumatic valve and industrial production is closely related to the development of the development of process control. : for example, a single-seat pneumatic valve unbalanced force, pressure difference can not meet the requirements of industrial process control, this is developed pneumatic valve core sleeve pneumatic valve balance; When the control pneumatic valve has become an important environmental noise pollution, many control pneumatic valve noise reduction, noise reduction decoration arises at the historic moment, when in the high temperature, low temperature and leakage in the process of industrial production has certain requirements, was born, to adapt to the high, low temperature elongation and pneumatic valve cover with bellows seal pneumatic valve cover. (2) control the development of pneumatic valve and improve product quality, reduce consumption of raw materials such as close cooperation, to control the update of the pneumatic valve and increase product variety, expansion, to adapt to the more and more widely. For example, the species of the pneumatic valve, pneumatic control valve is a single-seat two-seater pneumatic valve, tee pneumatic valve, pneumatic valve, pneumatic valve sleeve, pneumatic valve, pneumatic valve isolation diaphragm pneumatic valve, pressure pneumatic valve, pneumatic valve, eccentric rotating eccentric disc pneumatic valve, pneumatic valve, butterfly gate pneumatic valve; Pneumatic diaphragm actuators actuators, pneumatic piston actuators, pneumatic small thin film actuator, pneumatic actuator, electric actuator, electric hydraulic actuators, gear and other enforcement agencies; A pneumatic pneumatic valve locator locator, electric pneumatic valve positioner, intelligent electro-pneumatic valve positioner, etc. (3) for a more convenient, flexible and reliable industrial application to adjust the development of pneumatic valve. Control pneumatic valve designed to use a more suitable formula, control of pneumatic valve installation and maintenance more convenient, the design of the control of pneumatic trims, such as flow design, material selection, design, noise reduction, make a wider range of industrial applications, use more reliable.