FIELD: valve industry.
SUBSTANCE: invention relates to valve industry and can be used to protect cryogenic tanks and reservoirs. The safety valve is made in the form of a normally open pneumatic valve, and the pulse valve is made in the form of a body in which a shut-off valve is installed, the overvalve cavity of which is connected with one pipeline to the pneumatic valve, and the other pipeline in which a nozzle is installed is connected to a pressure source with a control medium. The pulse valve contains a sensing element in the form of two diaphragms, a spring and a stem, while the diaphragms are fixed in the body and the glass. The cavity between the lower membrane and the body is connected by a pipeline to the gas cushion of the cryogenic reservoir. The cavity between the upper diaphragm and the body, as well as the cavity under the shut-off valve, is connected to the waste pipeline. The cavity between the membranes is equipped with a device for monitoring their tightness.
EFFECT: invention increases the tightness and reliability of the safety device for cryogenic tanks.
1 cl, 1 dwg
| Title | Year | Author | Number |
|---|---|---|---|
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|
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|
RU2747895C1 |
