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Miniaturized high-pressure piezoelectric proportional valve based on spring tube displacement amplification

A displacement amplification and spring tube technology, applied in the mechanical field, can solve the problems of low sealing reliability and complex structure, and achieve the effects of high reliability, long life and strong pressure resistance.

Active Publication Date: 2020-07-03
BEIJING INST OF CONTROL ENG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The technical problem solved by the invention is: to overcome the deficiencies of the prior art, a miniaturized high-pressure piezoelectric proportional valve based on spring tube displacement amplification is proposed, which solves the problems of complex structure and low sealing reliability of existing products

Method used

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  • Miniaturized high-pressure piezoelectric proportional valve based on spring tube displacement amplification
  • Miniaturized high-pressure piezoelectric proportional valve based on spring tube displacement amplification
  • Miniaturized high-pressure piezoelectric proportional valve based on spring tube displacement amplification

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Embodiment Construction

[0033] Such as figure 1 As shown, it is a two-dimensional sectional view of a high-voltage piezoelectric proportional valve of the present invention, wherein the piezoelectric drive assembly 1 is a device that generates displacement through piezoelectric ceramics, and is the driving force of the piezoelectric proportional valve product; the elastic amplification assembly 2 functions to The displacement of the piezoelectric drive component 1 is amplified to the opening of the valve port, and at the same time realizes high-pressure dynamic sealing; the outer cover 3 is a hollow thin-walled cuboid structure, and its function is to provide dustproof protection for the piezoelectric drive component 1; the main structure of the valve body 4 It is a hollow tube structure, which provides the installation interface for the piezoelectric drive component 1, the elastic amplification component 2, the outer cover 3 and the air outlet joint 5, and provides the connection interface for the pi...

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Abstract

The invention discloses a miniaturized high-pressure piezoelectric proportional valve based on spring tube displacement amplification. The miniaturized high-pressure piezoelectric proportional valve comprises a piezoelectric driving assembly, an elastic amplification assembly, an outer cover, a valve body and an air outlet connector. According to the miniaturized high-pressure piezoelectric proportional valve, the displacement of the piezoelectric driving assembly is amplified into the opening degree of a valve port by utilizing the elastic amplification assembly, and the displacement amplifying function is achieved; and meanwhile, the elastic amplification assembly and the valve body are welded together, and the high-pressure motive sealing function is achieved; the piezoelectric drivingassembly achieves displacement superposition of two piezoelectric ceramics, and original displacement output of the piezoelectric driving assembly is increased. The piezoelectric proportional valve has the characteristics of miniaturization, light weight, long service life and high pressure resistance, and is particularly suitable for proportional flow control occasions under high air pressure.

Description

technical field [0001] The invention belongs to the mechanical field and relates to a miniaturized high-voltage piezoelectric proportional valve based on spring tube displacement amplification. Background technique [0002] Proportional valves are widely used in the field of high-precision fluid control (such as flow control or pressure control) due to their advantages of continuously adjustable flow and high control precision. According to different driving methods, proportional valves can be divided into electromagnetic proportional valves, piezoelectric proportional valves, magnetostrictive proportional valves, etc. Among them, piezoelectric proportional valves have become a research hotspot due to their low power consumption and high displacement resolution. [0003] Piezoelectric proportional valves are also being increasingly used in the aerospace field, such as propellant pressure regulation and flow control for propulsion systems. The propellant of the space propuls...

Claims

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Application Information

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IPC IPC(8): F16K31/00F16K31/44F16K1/38F16K1/00
CPCF16K1/00F16K1/38F16K31/004F16K31/44
Inventor 官长斌张美杰南柯姚兆普扈延林毛威王平蔡坤范旭丰曾昭奇于金盈任凯李伟纪孟轩李恒建张良张志伟王建李长维
Owner BEIJING INST OF CONTROL ENG
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