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Simple high-temperature testing device and method for flange rubber sealing element

A technology of rubber seals, high temperature test, applied in the direction of detecting the appearance of fluid at the leak point, using liquid/vacuum degree for liquid tightness measurement, etc. The effect of fast heat transfer and saving development costs

Active Publication Date: 2012-05-09
AEROSPACE RES INST OF MATERIAL & PROCESSING TECH +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The helium mass spectrometry leak detection method generally requires the formation of a vacuum chamber for leak detection, the design of the test tooling is complicated, and the test time is long for large structural size test pieces
To sum up, the existing technology does not have a simple test method for assessing the high-temperature sealing performance of the flange rubber seal when it is used for a short time at its limit temperature under the condition of rapid temperature rise

Method used

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  • Simple high-temperature testing device and method for flange rubber sealing element
  • Simple high-temperature testing device and method for flange rubber sealing element
  • Simple high-temperature testing device and method for flange rubber sealing element

Examples

Experimental program
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Effect test

Embodiment 1

[0026] like figure 1 and figure 2 As shown, a simple high-temperature test device for a flange rubber seal according to the present invention includes an upper flange 18, a lower flange 22 is docked with the upper flange 18, and the lower flange 19 is clamped by a loop ring 19. flange 22, at the same time pass through the loop ring 19 and the upper flange 18 through several bolts 21 arranged in the circumferential direction to realize the fastening connection of the upper and lower flanges; set a ring groove on the end surface of the lower flange 22 that is in contact with the upper flange 18 , is the sealing groove 25 for assembling the flange rubber seal to be tested;

[0027] At a distance of 20 mm from the end face of the upper flange 18, the upper cover 16 and the upper flange 18 are connected by welding, and the end face of the upper flange produces a flange flatness of 0.3 mm; the upper cover 16 has two nozzles 14 and 15 . At a distance of 50 mm from the end face of...

Embodiment 2

[0034] The simple and easy high temperature test method of a kind of flange rubber seal of the present invention, such as figure 1 and figure 2 As shown, it includes the following steps:

[0035] (a) Open a ring groove on the end face of the lower flange 22 that is in contact with the upper flange 18. In order to assemble the sealing groove 25 of the flange rubber seal to be tested, place the flange rubber seal to be tested on the seal Then the lower flange 22 is docked with the upper flange 18, and then the lower flange 22 is clamped by the loop ring 19, and at the same time, several bolts 21 arranged in the circumferential direction pass through the loop ring 19 and the upper flange 18 Realize the tight connection of the upper and lower flanges; the upper cover 16 is welded on the top of the upper flange 18 to seal the upper flange 18, and there are two nozzles 14 and 15 on the upper cover 16; the bottom cover 23 is welded on the bottom of the lower flange 22 , to seal th...

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Abstract

The invention provides a simple high-temperature testing device and method for a flange rubber sealing element. A lower flange is in butt joint with an upper flange; the end face of the lower flange which is contacted with the upper flange is provided with a ring groove which serves a sealing groove for assembling the flange rubber sealing element to be tested; an upper cover is welded on the top of the upper flange; a bottom cover is welded at the bottom of the lower flange; the upper cover is connected to a gas medium charging pipeline; one end of a thermocouple is inserted into the upper flange through a gap, and the other end of the thermocouple is connected with a temperature indicator; and the upper flange and the lower flange which are connected one above the other are arranged in a high-temperature oil bath container. In the invention, a gas source is cut off by pressurizing under the normal-temperature condition, and a pressurizing way for reaching a preset pressure at the high temperature by using a gas expanding principle is adopted, so that the pressure constancy under the high-temperature condition is ensured; and an oil bath heating way is adopted, so that rapid heat transfer of a leakage test tool is realized. Due to the adoption of the device and the method, detection of the high-temperature sealing property of the rubber sealing element at the extreme usage temperature during short-time use is realized, and the development cost is greatly saved.

Description

technical field [0001] The present invention relates to a test method and device for flange seals. Specifically, the present invention relates to a simple method for assessing the high-temperature sealing performance of flange rubber seals when they are used for a short time at their limit service temperature under the condition of rapid temperature rise. Test method and device. Background technique [0002] Flange rubber seals are widely used for their simple sealing structure and high sealing reliability. Under the premise that the flange sealing technical requirements allow, flange rubber seals have always been the preferred sealing technology solution. However, when the flange rubber seal is used for a short time at its extreme temperature, how to accurately detect its high-temperature sealing performance has always been one of the difficult problems in the field of sealing technology. To solve this problem, it is necessary to break through the rapid heating method and...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01M3/06
Inventor 王立峰白湘云刘朝阳王帮武吴福迪方涛王静生田新李京平
Owner AEROSPACE RES INST OF MATERIAL & PROCESSING TECH
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