A dual-piston independent damping, vibration reduction and pressure regulation equipment

A dual-piston, piston technology, applied in the field of hydraulic components, can solve the problems of difficult pressure valve stability and large overshoot, and achieve the effects of improving pressure stability, small static pressure deviation, and stable volume fluctuations as soon as possible.

Inactive Publication Date: 2015-08-05
SOUTHWEST JIAOTONG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

It can effectively solve the problem that the existing pressure valve is not easy to be stable and has a large overshoot

Method used

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  • A dual-piston independent damping, vibration reduction and pressure regulation equipment

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Embodiment Construction

[0018] figure 1 As shown, a specific embodiment of the present invention is: a dual-piston independent damping, vibration reduction and pressure regulating equipment, including a valve body 1, a valve core 2 and a piston-3, the non-sealed end of the valve core 2 and the piston-3 The left end is connected and fixed, the piston one 3 is located at the left front end of the piston sleeve 6, and the middle part of the piston sleeve 6 is provided with a variable damping hole 5, and the right end of the piston one 3 and the left end of the variable damping hole 5 form a variable damping hole 5 in the piston sleeve 6. The volume cavity (called the left volume cavity); the right end of the piston sleeve 6 is provided with a piston 2 7, and the right end of the variable damping hole 5 and the left end of the piston 2 7 form another variable volume cavity (called the left volume cavity) in the piston sleeve 6 It is the right volume chamber), the right end of the piston two 7 is in conta...

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Abstract

Disclosed is a double-piston independent damping vibration attenuation pressure regulating device. A non-sealing end of a valve core of the device is connected and fixed with the left end of a piston which is arranged at the front left end of a piston sleeve. A changeable damping hole is formed in the middle portion of the piston sleeve. A changeable cavity is formed in the piston sleeve by the right end of the piston and the left end of the changeable damping hole. Another piston is arranged at the right end of the piston sleeve. Another changeable cavity is formed in the piston sleeve by the right end portion of the changeable damping hole and the left end portion of the second piston. The right end of the second piston is contacted with a spring arranged on the inner side of an end cover. The spring arranged on the inner side of the end cover is sleeved outside the piston sleeve and is contacted with the inner side of a shoulder of the front end of the piston sleeve. The double-piston independent damping vibration attenuation pressure regulating device has the advantages of improving dynamic stability of a pressure valve greatly, enabling the pressure valve to work stably, enabling dynamic features of the pressure valve to be better and easy to stabilize due to the fact that independent damping vibration attenuation pressure regulating technology is adopted, avoiding throttling loss caused by adding a throttling device to a valve, improving working efficiency of parts and a system and improving working reliability of the parts and the system.

Description

technical field [0001] The invention belongs to the technical field of hydraulic components, and in particular relates to a pressure regulating valve. Background technique [0002] Hydraulic pressure valves, such as relief valves, sequence valves, and pressure reducing valves, are very important components in hydraulic systems to achieve various pressure controls in hydraulic systems. The traditional switch or fixed value pressure valve directly uses the spring to adjust the pressure, which has the advantages of simple structure and compact volume. Although the spring pressure regulating device has a certain pressure buffering capacity, it does not have damping characteristics, which is not conducive to the dynamic stability of the hydraulic valve. In the traditional design of pressure valves and pressure control systems, a throttling device is usually added at the outlet of the pressure valve to improve its damping capacity, so that the pressure valve remains stable. The ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F15B13/02
Inventor 刘桓龙王国志吴文海于兰英
Owner SOUTHWEST JIAOTONG UNIV
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