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Working method of hydraulic bypass with piston type two-way pressure relief valve

A bi-directional pressure and working method technology, applied in fluid pressure actuation devices, fluid pressure actuation system safety, safety valves, etc., can solve problems such as pipelines that cannot be applied to two-way flow, and achieve simple structure, stable performance, and high precision high effect

Active Publication Date: 2017-11-03
江苏金荣森制冷科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the pressure relief valves on the market are all one-way pressure relief valves, which require direction selectivity during installation, and are not suitable for two-way flow pipelines.

Method used

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  • Working method of hydraulic bypass with piston type two-way pressure relief valve
  • Working method of hydraulic bypass with piston type two-way pressure relief valve
  • Working method of hydraulic bypass with piston type two-way pressure relief valve

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0036] Example 1. When the liquid flows from left to right and the main hydraulic circuit is blocked, the pressure at the left end of the piston type two-way pressure relief valve is greater than the pressure at the right end, because the pressure in the piston fluid channel on the left side of the diaphragm is greater than that on the right side of the diaphragm The pressure in the fluid channel of the piston, the fluid pushes the diaphragm to move to the right, so that the piston also moves to the right, when the fluid hole on the left side of the diaphragm is located in a fluid channel half cavity on the right, the fluid with higher pressure will flow from The fluid passage of the piston on the left flows out through the fluid hole to a half chamber of the fluid passage on the right, and then flows into the fluid passage of the piston on the right, so as to achieve the purpose of pressure relief. At this time, the spring on the left is in tension state, the spring on the rig...

Embodiment 2

[0037] Example 2. When the liquid flows from right to left and the main hydraulic circuit is blocked, the pressure at the right end of the piston type bidirectional pressure relief valve is greater than the pressure at the left end, because the pressure in the piston fluid channel on the right side of the diaphragm is greater than that on the left side of the diaphragm The pressure in the fluid channel of the piston, the fluid pushes the diaphragm to move to the left, so that the piston also moves to the left, when the fluid hole on the right side of the diaphragm is located in a fluid passage half cavity on the left, the fluid with higher pressure will flow from The fluid passage of the piston on the right flows out through the fluid hole to a half cavity of the fluid passage on the left, and then flows into the fluid passage of the left piston, so as to achieve the purpose of pressure relief. At this time, the spring on the right is in tension state, the spring on the left is...

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PUM

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Abstract

The invention relates to a working method for a hydraulic bypass with a piston-type two-way pressure relief valve. The hydraulic bypass with the piston-type two-way pressure relief valve is connected to a hydraulic main path in parallel, and comprises a hydraulic-bypass left section, a hydraulic-bypass right section and the piston-type two-way pressure relief valve connected between the hydraulic-bypass left section and the hydraulic-bypass right section; when liquid flows and the hydraulic main path is not expedite, a piston in the piston-type two-way pressure relief valve moves, the pressure relief aim is achieved accordingly, and when pressure of the left side of a partition plate is equal to pressure of the right side of the partition plate, the piston is returned to the normal position, and the hydraulic main path is returned to be expedite. The working method has the advantages of being capable of conducting two-way pressure relief, simple in structure, stable in performance, short in pressure relief time, high in pressure relief speed and accuracy and good in sealing performance.

Description

technical field [0001] The invention relates to a working method of a hydraulic bypass with a piston type two-way pressure relief valve. Background technique [0002] In radiators, cooling systems, hydraulic systems, lubrication systems, oil transmission systems, power systems, mechanical spindles of machine tools, machining centers and liquids, etc.; in the above systems, there are some shocks, pulses, and transients during the flow of liquids. Strict requirements and conditions such as high pressure and large instantaneous flow rate, especially in winter and severe cold areas, the oil used by machinery has high viscosity and poor fluidity when the machine is just started, and has a large impact force, which affects the entire machine and machining center. of paralysis. In order to balance the pressure and release the pressure well without causing damage or scrap to other equipment or other components, there are generally hydraulic bypasses on the hydraulic main road that ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F15B20/00F16N23/00F16K17/04F16K17/164F16L41/00
CPCF15B20/00F16K17/044F16K17/046F16K17/164F16L41/00F16N23/00
Inventor 黄晓军
Owner 江苏金荣森制冷科技有限公司