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Secondary pressure relief valve

A secondary decompression and decompression valve technology, which is applied in the field of decompression valves, can solve problems such as high cost, unstable decompression, and large volume, and achieve the effect of solving weld bead bubbles and top gun blowing

Pending Publication Date: 2017-10-13
王海斌
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Existing commonly used pressure reducing valves include single decompression and secondary decompression. The single decompression structure is simple, but there is a problem of unstable decompression. The secondary decompression valve is stable in decompression, but it has a large volume and high cost. question

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0018] Such as figure 1 , 2 As shown, the secondary decompression valve includes a valve body 1, the valve body 1 is provided with an air inlet 2 and an air outlet 3, and the valve body 1 is provided with a primary decompression valve assembly 4 and a secondary decompression valve assembly 5 , the primary decompression valve assembly 4 includes a primary spring 41, a piston 42 and a primary vent hole 43, the piston 42 is installed in cooperation with the primary spring 41, and the primary vent hole 43 is connected to the air inlet 2 and the secondary decompression valve assembly 5 , the secondary decompression valve assembly 5 includes a secondary spring 51 and a secondary vent hole 52 , and the secondary vent hole 52 is connected to the air outlet 3 .

[0019] The valve body 1 is provided with an adjustment device 6 , and the adjustment device 6 includes an adjustment spring 61 , and the adjustment spring 61 cooperates with the secondary decompression valve assembly 5 . The...

Embodiment 2

[0029] For the secondary pressure reducing valve, on the basis of Embodiment 1, the low-pressure flow assembly 7 adopts a low-pressure gauge, and the pressure of the air outlet 3 is displayed through the detection of the low-pressure gauge, which is intuitive and simple.

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PUM

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Abstract

The invention discloses a secondary pressure relief valve. The secondary pressure relief valve comprises a valve body which is provided with an air inlet and an air outlet. A primary pressure relief valve assembly and a secondary pressure relief valve assembly are arranged in the valve body. The primary pressure relief valve assembly comprises a primary spring, a piston and a primary vent hole, wherein the piston and the primary spring are assembled in a matched mode, and the primary vent hole is connected with the air inlet and the secondary pressure relief valve assembly. The secondary pressure relief valve assembly comprises a secondary spring and a secondary vent hole which is connected with the air outlet. According to the secondary pressure relief valve, stable pressure relief and air exhaust are achieved through secondary pressure relief, the structure is small, and the cost is reduced.

Description

technical field [0001] The invention relates to the field of pressure reducing valves, in particular to a secondary pressure reducing valve. Background technique [0002] Due to the nature of welding and the transport requirements of the gas it uses, it is often necessary to depressurize the gas. Existing commonly used pressure reducing valves include single decompression and secondary decompression. The single decompression structure is simple, but there is a problem of unstable decompression. The secondary decompression valve is stable in decompression, but it has a large volume and high cost. question. Contents of the invention [0003] The purpose of the present invention is to provide a combination of a compact structure of a single decompression valve and a stable decompression of a secondary decompression valve, so that the cost performance of the product is greatly improved. In order to achieve the above object, the present invention adopts the following technica...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16K17/30
CPCF16K17/30
Inventor 王海斌
Owner 王海斌
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