A small flow piezoelectric ceramic proportional valve

A technology of piezoelectric ceramics and piezoelectric ceramic sheets, applied in the field of proportional valves, to achieve the effects of high valve resolution, good motion rigidity and dynamic stability, and long life

Active Publication Date: 2019-01-25
SHANGHAI INST OF SPACE PROPULSION
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Due to reasons such as materials and structures, traditional regulating valves cannot meet the above requirements

Method used

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  • A small flow piezoelectric ceramic proportional valve
  • A small flow piezoelectric ceramic proportional valve
  • A small flow piezoelectric ceramic proportional valve

Examples

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Embodiment Construction

[0018] The present invention will be described in detail below in conjunction with specific embodiments. The following examples will help those skilled in the art to further understand the present invention, but do not limit the present invention in any form. It should be noted that those skilled in the art can make several modifications and improvements without departing from the concept of the present invention. These all belong to the protection scope of the present invention.

[0019] Such as figure 1 As shown, the embodiment of the present invention provides a small flow piezoelectric ceramic proportional valve, which includes an upper casing 1, a lower casing 2 and a wire 5, the upper casing 1 and the lower casing 2 are connected by bolts 7, and the upper A terminal 6 is installed above the housing 1, and a piezoelectric ceramic assembly 3 is installed in the lower housing 2. One end of the wire 5 communicates with the piezoelectric ceramic assembly 3, and the other en...

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Abstract

The invention discloses a micro-flow piezoelectric ceramic proportional valve. The micro-flow piezoelectric ceramic proportional valve comprises an upper casing, a lower casing and a wire, wherein the upper casing and the lower casing are connected through a bolt, a terminal is mounted at the upper part of the upper casing, piezoelectric ceramic assemblies are mounted in the lower casing, one end of the wire communicates with the piezoelectric ceramic assemblies, the other end of the wire is led out by the terminal and connected with a control power supply, and an outlet joint is arranged at the lower end of the lower casing and locked and fixed through a locknut. Piezoelectric ceramic parts are taken as drive parts, an electromechanical coupling effect of the piezoelectric ceramic parts is used, that is, certain voltage is applied to the piezoelectric ceramic parts to enable the piezoelectric ceramic parts to produce small deformation and small displacement so as to drive a valve needle to move, the minimum displacement is a few nanometers, so that the valve opening is regulated, outlet pressure or medium flow of the valve is further regulated, and micro-flow regulation is realized.

Description

technical field [0001] The invention relates to a proportional valve, in particular to a small flow piezoelectric ceramic proportional valve. Background technique [0002] Pressure control and flow regulation are important links in the aerospace field. Especially in the field of micro-satellites and micro-propulsion, such as electric propulsion systems and air-cooled propulsion systems, the required output thrust is millinewton or micronewton, so there is an urgent need for a small volume, light weight, high resolution, and output accuracy. Valves with high height, fast response and long life can improve the maneuverability and life of the tiny propulsion system. Due to reasons such as materials and structures, traditional regulating valves cannot meet the above requirements. Contents of the invention [0003] The purpose of the present invention is to provide a piezoelectric ceramic proportional valve with a small flow rate. The piezoelectric ceramic is used as the driv...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F16K31/00
CPCF16K31/004
Inventor 袁卫成徐营陈建敏王强陈文曲章红莉陈红
Owner SHANGHAI INST OF SPACE PROPULSION
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