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Mechanical pressure switch capable of realizing high-precision rigidity compensation and compensation method thereof

A pressure switch, mechanical technology, applied in the direction of electric switches, electrical components, circuits, etc., can solve the problems of difficult to meet the high-precision adjustment of the flow system, reduce the pressure sensitivity of mechanical pressure switches, and large spring stiffness, etc., to improve the mechanics Environmental adaptability, improving sensitivity and working accuracy, reducing the effect of spring stiffness

Active Publication Date: 2021-07-20
XIAN AEROSPACE PROPULSION INST
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  • Description
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AI Technical Summary

Problems solved by technology

[0004] The present invention aims to solve the problem that when the mechanical pressure switch of the current attitude control power device is used, the spring rigidity is large, the pressure sensitivity of the mechanical pressure switch is reduced, and it is difficult to meet the high-precision adjustment of the flow system. Mechanical pressure switch with precision stiffness compensation and its compensation method

Method used

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  • Mechanical pressure switch capable of realizing high-precision rigidity compensation and compensation method thereof
  • Mechanical pressure switch capable of realizing high-precision rigidity compensation and compensation method thereof
  • Mechanical pressure switch capable of realizing high-precision rigidity compensation and compensation method thereof

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Embodiment Construction

[0048] The technical solutions of the present invention will be clearly and completely described below in conjunction with the embodiments of the present invention and the accompanying drawings. Apparently, the described embodiments do not limit the present invention.

[0049] Such as figure 1As shown, a mechanical pressure switch that can realize high-precision stiffness compensation in this embodiment includes a microswitch 10, a housing 6, a pressure sensing unit arranged on the housing 6, and a Lever 8, compensation unit and reset unit;

[0050] The micro switch 10 is fixed in the housing 6 , and an outlet hole 13 is arranged above the micro switch 10 , and the micro switch 10 is electrically connected to the pump outside the housing 6 through the outlet hole 13 .

[0051] Such as image 3 As shown, there is a permanent magnet contact point 81, a return spring contact point 83 and a pressure-sensitive piston contact point 84 on the lever 8;

[0052] The pressure-sensing...

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Abstract

The invention relates to a mechanical pressure switch, in particular to a mechanical pressure switch capable of achieving high-precision rigidity compensation and a compensation method thereof, and aims to solve the problems that when a mechanical pressure switch of an existing attitude control power device is used, the spring rigidity is large, the pressure sensitivity of the mechanical pressure switch is reduced, and high-precision adjustment of a flow system is difficult to meet. According to the technical scheme, the mechanical pressure switch capable of achieving high-precision rigidity compensation comprises a microswitch, a shell, a pressure sensing unit, a lever, a compensation unit and a reset unit, wherein the pressure sensing unit is arranged on the shell, and the lever, the compensation unit and the reset unit are arranged in the shell. The microswitch is fixed in the shell; the pressure sensing unit comprises a pressure sensing piston and a pressure rod, and the pressure sensing piston is installed on the shell; one end of the pressure rod is connected with the pressure sensing piston, and the other end of the pressure rod extends into an inner cavity of the shell and acts on the lever in the anticlockwise direction; the invention further provides a high-precision rigidity compensation method based on the mechanical pressure switch.

Description

technical field [0001] The invention relates to a mechanical pressure switch, in particular to a mechanical pressure switch capable of realizing high-precision stiffness compensation and a compensation method thereof. Background technique [0002] The mechanical pressure switch of the attitude control power unit is used to indirectly control the pump speed to realize the function of flow control. In order to ensure the adjustment accuracy of the flow system, a higher requirement is put forward for the sensitivity of the pressure switch: the pressure sensitivity is within 2.5%. [0003] Existing mechanical pressure switches generally use springs to control their sensitivity, but the sensitivity is difficult to meet the system requirements; from the design point of view, the stiffness of the spring has a great influence on its pressure sensitivity. If a spring with a small stiffness is used, it can be improved. The pressure sensitivity of the mechanical pressure switch, but th...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01H35/26H01H35/24
CPCH01H35/26H01H35/247
Inventor 魏学峰罗大亮朱建国张思坤王君孙亮葛洋
Owner XIAN AEROSPACE PROPULSION INST
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