Concept of the hottest safety valve and precaution

2022-09-23
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Safety valve concept and precautions for product installation and maintenance

safety valve is a valve for safety protection. Its hoist is in a normally closed state under the action of external force. When the medium pressure in the equipment or pipeline rises and exceeds the specified value, it will automatically open. By discharging medium outside the system, the medium pressure in the pipeline or equipment will be prevented from exceeding the specified value. Safety valves belong to automatic valves, which are mainly used in boilers, pressure vessels and pipelines. The control pressure does not exceed the specified value, which plays an important role in protecting people from multiple personal safety and equipment operation

according to the opening height of the safety valve disc, it can be divided into micro open safety valve and full open safety valve. The opening stroke height of the micro open safety valve is: ≤ 0.05d0 (minimum discharge throat diameter); The opening height of full lift safety valve is ≤ 0.25d0 (minimum discharge throat diameter)

safety valves are divided into vertical hammer type, lever type, spring type and pilot type (pulse type) according to their structural forms; According to the structure of the valve body, it can be divided into closed type and non closed type. Closed safety valve means that the excluded medium will not leak out, and all of it will be discharged to the designated place along the outlet. It is generally used in toxic and corrosive media. For safety valves for air and steam, safety valves that do not close all switches and put them in the closed state are often used. The selection of safety valve products should be determined according to the actual sealing pressure. For spring-loaded safety valves, springs with several working pressure levels within a nominal pressure (PN) range, in addition to indicating the model, name, medium and temperature of the safety valve, the sealing pressure of the valve body should also be indicated when ordering, otherwise the supply should be based on the maximum sealing pressure. Attention should be paid to the following matters in the installation and maintenance of the safety valve of rotor pump Custer red wine:

in the case of other average torque levels,

various safety valves should be installed vertically

there should be no resistance at the outlet of the safety valve to avoid pressure

before installation, the safety valve should be specially tested and its sealing should be checked

The full digital measurement and control system of Jinan new era assay instrument Co., Ltd. realizes the closed-loop control of force, displacement and deformation

the safety valve in use should be checked regularly

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