In recent years, the instrumentation and control instruments are the impact of digital technology and microprocessor technology changes for all to see, and this part of the actuator, especially as the main products of the solenoid valve, there are also improved by leaps and bounds. The typical automatic control system there are three elements: detection, control, implementation of the three branches. The traditional use of solenoid valves are basically content with the needs of many industries, but with the large-scale development of modern industry. How to produce more and better advanced products, how to progress with product quality standards, how to more effectively and more safely manipulate, how to make full use of resources, saving energy and protecting the ecological environment, people have higher demands of the solenoid valve These requirements can be summarized as follows: quality is more chaos, more reliable work, manipulation of safety in process control, solenoid valve and the fluid in contact in the event of failure, the consequences could be disastrous.
Modern industry is produced in automation for the flag. A variety of advanced control methods constantly appearing, but the basic control law has not changed, and the improvement of the technical tools is changing. The development and use of the smart meter is more industrial automation to create the boast Jiao future. View the history of the development of automation systems and improve the technical tools of change plays an extremely important role.
In the power industry, power plants, boiler control, boiler-conditioning systems to maintain the normal water level is essential to avoid mistakenly opened the solenoid valve mistakenly shut, double how important it is.
To ensure the performance and reliability of the solenoid valve, you must do the following requirements:
1, ensure reliable operation unfair to refer to the solenoid valve manufacturing quality, but also improve operator training and quality. In order to prevent misuse, the process must pay attention to the precautions indicated by the nameplate. Important valve should have enough accessories, such as location, limit switches, and so on. Pneumatic actuator nameplate at least according to the new pneumatic solenoid valve standard (GB/T4213-92) to mark the manufacturer name, product type, rated flow coefficient, design number, product number and year of manufacture and other matters. Have enough space for the installation and operation of space, enough space for installation and operation, adequate lighting, there are strict rules. The body should be cast out or out of said medium flow direction arrow and the word DN value and PN and numerical.
2, the manufacturer of the manufacturing techniques and testing methods must comply with the standards, signed by the competent authority recognized. Prohibited does not have the production conditions of small factories for production. Ensure that selection of quality solenoid valve solenoid valve to go through a rigorous calculation; type, caliber, and the performance required to meet the requirements; various parts of the material of the solenoid valve is necessary to strictly select must be of sufficient strength and stiffness, according to national standards pressure test, air tightness test.
In the chemical industry, changes in the diversity of process and process conditions, control and implementation of temperature, pressure, flow and level four thermal variables have a very special requirements solenoid valve can be applied.
From oil fields to refineries in the oil industry, a variety of production equipment on a large scale centralized monitoring and control, most of the operating conditions under high temperature and low pressure or high temperature and pressure, the media are a variety of flammable and explosive oil kinds of oil, therefore, the reliability and fire resistance of the solenoid valve is mentioned first.