What is the role of mandatory installation of cut-off valve in security inspection
Time: July 29, 2019 13:37:06 Source: Yonglong Valve Reading: zero second
What is the role of mandatory installation of cut-off valve in security inspection
In recent years, due to the increased protection requirements for the safety of hazardous media storage, the Safety Supervision Bureau has forced enterprises to quickly deal with accidental leakage during loading and unloading, and emergency shut-off valves must be installed on the inlet and outlet pipes of storage tanks.
Emergency shut-off valve Gu Mingsi: In case of emergency, quickly cut off the valve for medium flow, which can protect the safety of storage tank equipment and the personal safety of on-site personnel. The actuator of the shut-off valve is electric, pneumatic, hydraulic and electromagnetic. With the development of automatic system control, the hydraulic shut-off valve will be gradually eliminated. The electromagnetic type valve core relies on the spring return action, the valve seat often goes out and switches insensitively (caused by the medium containing a small amount of impurities or oil), and the coil is often burnt when the voltage is unstable, Instead, pneumatic shut-off valve and electric shut-off valve will be used.
Electric shut-off valve: it is composed of explosion-proof angle travel/straight travel electric actuator, fire and anti-static ball valve or stop valve, butterfly valve and gate valve. The power supply controls the rotation of the actuator motor to drive the valve core to rotate to achieve switching action.
Pneumatic cut-off valve: it is composed of explosion-proof angular travel/straight travel diaphragm pneumatic actuator, ball valve, stop valve, butterfly valve, gate valve, matched with manual device, travel switch (signal feedback), air filter pressure reducing valve, explosion-proof solenoid valve. The solenoid valve coil controls the air source conversion to drive the valve core to rotate to achieve switching action.
Electric emergency shut-off valve and pneumatic emergency shut-off valve can realize remote automatic switch, and can be connected with SIS system (Safety Instrumented System), DCS automatic control system, fire control, gas leakage alarm to realize safety protection measures for dangerous medium storage tank equipment and related pipelines.
Since its establishment, "shylfmc" Yonglong Valve has developed a variety of control valves used in a wide range of fields, as well as supporting products for process automation (PA) equipment in various industries. Since 1999, through research and development, we have accumulated rich technology and experience, and committed to the development, manufacturing and sales of systems, including the sale of supporting products on a commission basis. The products include: air drain valve, flame retardant vent cap, flame arrester, automatic exhaust valve, electro-hydraulic valve, fuse valve, pull off valve, drain valve, flow limiting valve, ammonia stop valve, liquid ammonia check valve, ammonia safety valve, air check valve, stainless steel ball valve, electric ball valve, pneumatic ball valve, electric control valve, pneumatic control valve, filter, and dozens of products with nearly 100 specifications. Yonglong Valve has been unremittingly exploring the market, strengthening pre-sales technical confirmation and model selection guidance, and actively exploring domestic and foreign markets.
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