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Aging life prediction method for pipeline system sealing structure and compression tool

A sealing structure and piping system technology, applied in the field of material characteristics research of sealing materials, can solve the problems that the accuracy of the prediction results cannot meet the needs, and only consider the temperature variable, etc., to achieve the effect of ingenious design, saving compression cost and accurate prediction

Active Publication Date: 2019-09-06
GLOBAL ENERGY INTERCONNECTION RES INST CO LTD +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, in the existing accelerated aging tests for sealing rings, the sealing rings are directly placed in a high and low temperature test chamber, and whether the sealing rings fail is determined through observation or experience, and only temperature variables are considered in the test, so the accuracy of the prediction results cannot meet the needs

Method used

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  • Aging life prediction method for pipeline system sealing structure and compression tool
  • Aging life prediction method for pipeline system sealing structure and compression tool
  • Aging life prediction method for pipeline system sealing structure and compression tool

Examples

Experimental program
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Effect test

Embodiment 1

[0062] The invention provides a method for predicting the aging life of a sealing structure of a piping system, the method comprising the following steps:

[0063] (1) Put the sealing structure to be tested into compression tooling designed according to the pipeline system;

[0064] (2) Aging the compression tooling at a constant temperature, and checking whether the sealing structure to be tested is invalid every 12 hours;

[0065] (3) Determine the aging life of the sealing structure to be tested according to its original parameters and parameters after failure.

[0066] The sealing structure to be tested is a sealing ring.

[0067] The compression tooling includes splints parallel to each other, fixing holes vertically penetrating through the splints, and fixtures passing through the fixing holes; multiple clamps that match the sealing structure to be tested and are perpendicular to the splints are arranged between the splints. A limiting column; the material of the splin...

Embodiment 2

[0106] The procedure of this embodiment is exactly the same as that of the embodiment 1, except that the constant temperature aging temperature is 85°C, so the obtained aging life is the aging life under the application environment of 85°C.

Embodiment 3

[0108] The procedure of this embodiment is exactly the same as that of the embodiment 1, except that the constant temperature aging temperature is 100°C, so the obtained aging life is the aging life under the application environment of 100°C.

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Abstract

The invention provides an aging life prediction method for a pipeline system sealing structure and a compression tool. The method comprises the following steps of: (1) compressing a sealing structureto be tested; (2) performing constant-temperature aging on the sealing structure to be tested in a compressed state, and testing whether the sealing structure to be tested is invalid at the same timeinterval; and (3) determining the aging life of the sealing structure to be tested according to the original parameters and the parameters after failure of the sealing structure to be tested. The invention relates to an aging life prediction method of a sealing structure of a pipeline system. In the technical scheme provided by the invention, the actual application environment of the sealing structure to be tested is simulated by compression and aging of the sealing structure to be tested until the sealing structure to be tested fails, and finally, the aging life of the sealing structure to betested is obtained by comparison, analysis and calculation of the original data of the sealing structure to be tested and the data after failure. The method is simple in step and accurate in prediction, can accurately determine the aging life of the sealing structure, and provides a powerful data reference and support for the design of a pipeline system.

Description

technical field [0001] The invention relates to the research on the material characteristics of the sealing material of the piping system, in particular to a method for predicting the aging life of the sealing structure of the piping system and a compression tooling. Background technique [0002] The high-voltage direct current transmission converter valve in the transmission line has experienced the transformation from air-cooled, oil-cooled to water-cooled. Compared with air-cooled and oil-cooled, water has the highest thermal conductivity, the largest specific heat capacity, and the strongest convective heat transfer capacity. The convective heat transfer coefficient ratio of oil and water is 1:10:100, so the use of water cooling can greatly improve the cooling effect, reduce the junction temperature of the thyristor, and improve the reliability of equipment operation. However, in recent years, with the rapid development of UHV DC transmission projects in some areas, the ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01M3/28
CPCG01M3/28
Inventor 周建辉王航高冲张静李云鹏廖巍
Owner GLOBAL ENERGY INTERCONNECTION RES INST CO LTD
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