Depth analysis: China's solenoid valve technology, the new development (a)

Solenoid valve as an automatic instrument actuator, the amount of a sharp increase in recent years. This paper analyzes the main characteristics of the solenoid valve and the angle of focus on the domestic application of mature technologies for a brief overview of developments, namely in the streamlining, intelligence, common and dedicated direction of study, and a little of the impact of solenoid valve technology development point to explore the social factors.



First, the main characteristics of the solenoid valve



(1) no leakage plugging, easy to control with the leakage, the use of security. Internal and external leakage is a factor likely to affect safety. Other controlled valve stem out usually by electrical, pneumatic, hydraulic spool control the implementation of the rotation or move. This action should address the long-term dynamic stem seal leakage problems of the outside; only electromagnetic solenoid valve is sealed in the following works for the magnetic core within the casing to complete, there is no dynamic seals, the leakage can easily block. Electric torque control valve is not easy, prone to leakage, and even pull off the head stem; the structure type solenoid valve with easy to control the leakage until zero. Therefore, the use of special safety solenoid valve, in particular, applicable to corrosive, toxic or high temperature media.



(2) the system is simple, will take computers, low cost him. Solenoid valve itself simple structure, low prices, compared to other types of control valve actuators, such as easy installation and maintenance. More significant is the composition of the automatic control system is much simpler, much lower price. Solenoid valve is switched due to signal control, and industrial control computer is very convenient to connect. Universal in today's computers, an era of declining prices, the solenoid valve on the more obvious advantages.



(3) Action Express, power tiny, lightweight form factor. Solenoid valve response time can be as short as a few milliseconds, even if the pilot-type solenoid valve can be controlled within a few dozen milliseconds. As the self-loop, other than more responsive control valve. Properly designed coil of solenoid valve power consumption is very low, an energy-saving products; action could also be just the trigger to automatically maintain valve position, usually is not power. Small size solenoid valve, saving space and beautiful light.



(4) regulation accuracy is limited, restricted the application of media. Solenoid valve switches are usually only two states, two spool limit has been placed in a position, not for regulation, (trying to break through a lot of new ideas, but also are in the pilot phase of the trial), so regulation accuracy is also subject to certain restrictions.



Solenoid valve on the media have a higher cleanliness requirements, including granular media can not be applied, in the case of least squares must impurities. In addition, the viscous-like medium can not be applied, and applies to specific products relatively narrow range of medium viscosity.



(5) models of diversity, a wide range of uses. Notwithstanding the inherent electromagnetic valve, the advantages are still very prominent, so a wide range of products designed to meet the different needs of a wide range of uses. Solenoid valve technology is also centered on how to overcome the deficiencies, how to give better play to the inherent advantage to start.



Second, technological development solenoid valve solenoid valve technology More About



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