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Low-frequency response parallel spring safety valve

A low-frequency response, parallel technology, applied in the direction of fluid pressure actuation system safety, fluid pressure actuation devices, servo motor components, etc., can solve problems such as the difficulty of system pressure maintenance, reduce leakage, realize pressure maintenance, and realize effect of change

Inactive Publication Date: 2019-06-07
JINCHENG NANJING ELECTROMECHANICAL HYDRAULIC PRESSURE ENG RES CENT AVIATION IND OF CHINA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

When the traditional single spring safety valve is used in some hydraulic systems with unstable pressure pulses, due to the fast response, it is difficult to maintain the pressure of the system, which often leads to the consumption of the limited working medium in the system in a short time.

Method used

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  • Low-frequency response parallel spring safety valve
  • Low-frequency response parallel spring safety valve

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Embodiment Construction

[0012] The present invention will be described in further detail below in conjunction with the accompanying drawings.

[0013] see figure 1 , a low-frequency response parallel spring safety valve, including threaded knob 2, pressure limit block 3, adjusting screw 4, housing 5, spring, backing plate 8, guide spool 9, sealing spool 10, sealing spool seat 11;

[0014] The housing 5 is a hollow cavity with two sections of shaft holes. The pilot valve core 9 is a stepped shaft with four steps. The first step of the core 9 is matched with the smaller shaft hole of the housing 5, the rest of the guide valve core 9 is placed in the larger shaft hole of the housing 5, and the third step of the guide valve core 9 is provided with a pressure limit block 3 , the corresponding housing is provided with a pressure adjustment hole, the adjustment screw 4 is installed in the pressure adjustment hole, the pressure can be adjusted to the pressure limit block 3, the guide valve core 9 is equipp...

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Abstract

The invention relates to a low-frequency response parallel spring safety valve. The low-frequency response parallel spring safety valve comprises such main units as a thread manual opening knob, interval-distributed spring pressure adjusting holes, double parallel springs, a flange mounting interface, a valve element and a valve base. The low-frequency response parallel spring safety valve adoptsthe design structure of double parallel springs, realizes the response frequency change through change of different design parameters of the two springs, prevents high-frequency opening caused by thesystem pulse fluctuation, realizes long-time pressure maintenance of a dynamic hydraulic system, and reduces the system external leakage quantity. Through interval distribution of the pressure adjusting holes, the opening pressure of the safety valve can be changed; and the manual opening of the safety valve can be realized through the thread manual opening knob.

Description

technical field [0001] The invention belongs to the field of fluid transmission control and relates to a low-frequency response parallel spring safety valve. Background technique [0002] Safety valves are widely used in hydraulic systems. When the hydraulic system exceeds a limited pressure value, the safety valve opens to release pressure and flow from the system. In specific applications, the safety valve needs to be opened manually to realize the draining function of the system. When the traditional single spring safety valve is used in some hydraulic systems with unstable pressure pulses, it is difficult to maintain the pressure of the system due to its fast response, which often leads to the consumption of the limited working medium in the system in a short time. Therefore, in a hydraulic system with limited working medium and unstable pressure pulse, a safety valve with low frequency response is required to keep the oil in the system. Contents of the invention [...

Claims

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Application Information

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IPC IPC(8): F15B13/02F15B20/00
Inventor 刘锦勇寇岩张宁宁
Owner JINCHENG NANJING ELECTROMECHANICAL HYDRAULIC PRESSURE ENG RES CENT AVIATION IND OF CHINA
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