Safety valve and high-pressure pipeline

Abstract

The invention discloses a safety valve and a high-pressure pipeline. The safety valve comprises a vale body, an air cylinder, a moving piston and a driving part. A valve element is mounted in the valve body, the air cylinder corresponds to the valve body, the moving piston is arranged in the air cylinder and is connected with the valve element, the driving part introduces driving media to the aircylinder through a first air inlet to drive the moving piston to move towards the direction away from the valve body, and through the above safety valve, the problems that for an existing safety valve, when the pressure in a pipeline is smaller than the activated pressure of the safety valve, a valve element can be jacked for pipeline cleaning, operation is complex, and the valve is not simple andconvenient to operate can be solved.

Description

technical field [0001] The invention relates to the technical field of valves, and mainly relates to a safety valve and a high-pressure pipeline. Background technique [0002] The safety valve is a special valve whose opening and closing parts are in a normally closed state under the action of external force. When the medium pressure in the equipment or pipeline rises above the specified value, it discharges the medium to the outside of the system to prevent the medium pressure in the pipeline or equipment from exceeding the specified value. . Safety valves are automatic valves, mainly used in boilers, pressure vessels and pipelines, to control the pressure not to exceed the specified value, and play an important role in protecting personal safety and equipment operation. [0003] Common safety valves have a variety of structures such as hammer type and spring type. Since the fluid medium flows in the fluid pipeline for a long time, when a different fluid medium is used in ...

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Problems solved by technology

[0004] Therefore, the technical problem to be solved by the present invention is that when the pressure inside the pipeline of the existing safety valve is lower than the take-off pressure of the safety valve, the valve core can only be lifted up to clean the pipeline, which has the problems of complicated operation and insufficient simplicity and convenience. , the present invention provides a safety valve, comprising: a valve body; a valve core is arranged in the valve body; a cylinder is arranged corresponding to the valve body; a moving piston is arranged in the cylinder and connected with the valve core; A driving member, which feeds a driving medium into the cylinder through the first air inlet to drive the moving piston to move away from the valve body

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