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Pressure follower servo valve

A servo valve and follow-up technology, applied in the field of servo valves, can solve the problems of limited scope of application, large volume of pressure follow-up servo valves, etc., and achieve the effect of small size

Active Publication Date: 2017-04-12
BEIHANG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] However, the existing pressure-following servo valve has a large volume, which limits its scope of application to a certain extent.

Method used

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  • Pressure follower servo valve
  • Pressure follower servo valve
  • Pressure follower servo valve

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Embodiment Construction

[0021] Embodiments of the present invention will be described below with reference to the drawings. Elements and features described in one drawing or one embodiment of the present invention may be combined with elements and features shown in one or more other drawings or embodiments. It should be noted that representation and description of components and processes that are not related to the present invention and known to those of ordinary skill in the art are omitted from the drawings and descriptions for the purpose of clarity.

[0022] see figure 2 Shown is a structural diagram of an embodiment of the pressure-following servo valve of the present invention.

[0023] In this embodiment, the pressure-following servo valve includes a housing 50 , a valve core 5 inside the housing 50 and a first decompression half-bridge 30 .

[0024] Wherein, the valve core 5 is an asymmetric plunger, including a column portion 51 protruding out of the casing 50 and a plug portion fixedly ...

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PUM

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Abstract

The invention relates to a pressure follow-up servo valve. The pressure follow-up servo valve comprises a shell and a valve core positioned in the shell, and further comprises a first pressure reducing half bridge. The pressure follow-up servo valve is smaller in volume, and can obtain an outlet oil pressure forming a certain linear relation with an inlet oil pressure through controlling the output force of a power device.

Description

technical field [0001] The invention relates to the field of servo valves, in particular to a pressure-following servo valve. Background technique [0002] The hydraulic control servo valve can output the modulated flow and oil pressure correspondingly after receiving the electrical analog signal. It is not only an electro-hydraulic conversion element, but also a power amplification element, which can convert weak electrical input signals with low power into high-power hydraulic energy (flow and oil pressure) output. In the electro-hydraulic servo system, it connects the electrical part with the hydraulic part to realize the conversion and hydraulic amplification of the electro-hydraulic signal. The electro-hydraulic servo valve is the core of electro-hydraulic servo system control. [0003] see figure 1 Shown is the structural diagram of the existing hydraulic servo valve. The pressure-following servo valve with this structure can control its outlet oil pressure P s Fo...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F15B13/02
CPCF15B13/02
Inventor 焦宗夏宋增宁尚耀星吴帅郝伟一
Owner BEIHANG UNIV