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Method for checking service life of liquid-filled sensitive element and special tool part therefor

A technology for sensitive components and tooling parts, which is applied in the field of accelerated assessment of the life of sensitive components, can solve problems such as long time periods, and achieve the effects of good practicability, good economy, and easy processing and assembly

Inactive Publication Date: 2018-07-06
TAIYUAN AERO INSTR
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  • Application Information

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Problems solved by technology

[0004] The purpose of the present invention is: in order to overcome the problem of the long time period of the life assessment of the liquid-filled sensitive element in the prior art, the present invention provides a method for accelerated assessment of the life of the liquid-filled sensitive element and its special tooling to effectively improve the sensitivity Efficiency of component life assessment, to achieve assessment goals, and reduce production costs

Method used

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  • Method for checking service life of liquid-filled sensitive element and special tool part therefor
  • Method for checking service life of liquid-filled sensitive element and special tool part therefor
  • Method for checking service life of liquid-filled sensitive element and special tool part therefor

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specific Embodiment approach

[0017] see figure 1 , figure 2 , image 3 , because the liquid-filled sensitive element is airtight and vacuum-like, its life assessment can be equivalent to the assessment of the leakage of the sensitive element within a certain period of time, and the leakage within the specified time is proportional to the leakage rate of the sensitive element. The leakage rate of the sensitive element is changed by the uniform distribution force of the liquid, increasing the uniform distribution force can achieve the goal of accelerating the assessment of the calendar year life of the sensitive element. The purpose of increasing the uniform force can be achieved by applying a concentrated force to the sensitive element. The following is the specific implementation method:

[0018] 1) Calculate and analyze the influence factors of the life equivalent assessment of liquid-filled sensitive elements. According to: (uniform force P1) × (effective force bearing area S) = (concentrated force...

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Abstract

The invention belongs to the design technical field of the service life accelerated assessment for sensitive elements and relates to a method for checking the service life of a liquid-filled sensitiveelement and a special tool part therefor. The service life assessment for the liquid-filled sensitive element can be equivalent to the assessment for the leakage amount of the sensitive element. Themethod comprises the following step of applying a concentrated force to the sensitive element so as to increase the uniform distribution force of the liquid. The leakage rate of the sensitive elementis increased after the uniform distribution force of the liquid is increased. The accelerated assessment for the service life of the sensitive element is achieved by measuring the leakage amount of the liquid in a specified period of time. According to the invention, the service life of the sensitive element can be accelerated, and the assessment time can be shortened.

Description

technical field [0001] The invention belongs to the accelerated assessment design technology of the life of a sensitive element, and relates to a life assessment method of a liquid-filled sensitive element and a special tooling part thereof. Background technique [0002] The structure diagram of the existing liquid-filled sensitive element is shown in figure 1 , including ejector rod 11, joint 12, sensitive element 13, temperature sensing tube 14, and filled liquid 15. During operation, the temperature sensing tube 14 senses the external temperature, and the heat is transferred to the filled liquid 15, and the filled liquid 15 expands with heat and contracts with cold. Drive the sensitive element 13 and the ejector rod 11 to move, thereby outputting the displacement. [0003] With the in-depth application and development of liquid-filled sensitive components, the demand for life assessment is becoming increasingly strong. R&D personnel need to assess the leakage of sensitiv...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01M13/00
CPCG01M13/00
Inventor 宋剑峰王文霞王战生王灵宝王建功薄建龙
Owner TAIYUAN AERO INSTR
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