External heating ultra-high temperature flange sealing performance detection system

A flange sealing and detection system technology, which is applied in fluid tightness testing, liquid tightness measurement using liquid/vacuum degree, heating element shape, etc. It can solve the problems of poor accuracy, difficulty, internal pressure monitoring and trace Difficult to detect pressure changes and other problems, to achieve the effect of good sealing and good sealing performance

Pending Publication Date: 2022-06-17
WUHAN INSTITUTE OF TECHNOLOGY
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Problems solved by technology

[0002] Traditional ultra-high temperature flange sealing performance testing is mainly through the internal heating method. It is difficult to

Method used

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  • External heating ultra-high temperature flange sealing performance detection system

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Effect test

Embodiment 1

[0035] like figure 1 As shown, the present invention provides an externally heated ultra-high temperature flange sealing performance detection system, including a flange, a heating box 1, a gas supply device and a gas detection device, and a heater is fixedly installed in the heating box 1; the flange includes two Flange 2, two flanges 2 are relatively fixedly installed in the heating box 1, one end of which is fixedly connected and the interiors of the two flanges 2 are connected to each other, and the other ends are closed; one end of the two flanges 2 is outside The fixed sleeve is provided with a sealing sleeve 3, and a sealing cavity is formed between the sealing sleeve 3 and one end of the two flanges 2; the air supply device communicates with the interior of the two flanges 2 through the air inlet pipe, and the gas detection device communicates with the two flanges 2 through the air outlet pipe. The seal chamber is communicated.

[0036] During detection, a closed spac...

Embodiment 2

[0044] On the basis of Embodiment 1, in this embodiment, the gas supply device is a high-pressure helium cylinder 4 , and the gas detection device is a helium mass spectrometer 5 .

[0045]High pressure is used to directly send helium into the closed space in the two flanges 2, and helium is a colorless and odorless inert gas with inactive chemical properties. It is difficult to react with other substances under normal conditions, so as to ensure detection accuracy Normal operation; in addition, the helium mass spectrometer 5 is convenient to detect, not only can detect whether there is helium gas, but also can detect the amount of helium gas leakage, with high accuracy.

[0046] In addition to the above embodiments, other suitable inert gases, such as argon and neon, can also be used. In theory, the range from normal temperature to operating temperature (600-1000° C.) is an inert gas and can be easily detected.

Embodiment 3

[0048] On the basis of Embodiment 2, this embodiment further includes a computer 6 , a pressure sensor 7 is fixedly installed at the gas outlet of the high-pressure helium cylinder 4 , and the pressure sensor 7 is connected to the computer 6 for communication.

[0049] When detecting, the pressure at the outlet of the high-pressure helium cylinder 4 is detected by the pressure sensor 7, and the corresponding pressure signal is sent to the computer 6, and the computer 6 receives the corresponding pressure signal, which is convenient for the staff to understand the outlet of the high-pressure helium cylinder 4. real-time pressure, safe and reliable.

[0050] It should be noted that the above-mentioned computer 6 is a computer, and the pressure sensor 7 is actually connected to the controller inside the computer 6 through a line.

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Abstract

The invention relates to an external heating ultrahigh-temperature flange sealing performance detection system, which comprises a flange, a heating box, a gas supply device and a gas detection device, and is characterized in that a heater is fixedly mounted in the heating box; the flange comprises two flange plates which are oppositely and fixedly installed in the heating box, one ends of the two flange plates are fixedly connected, the interiors of the two flange plates are communicated, and the other ends of the two flange plates are closed. A sealing sleeve fixedly sleeves one end of each of the two flange plates, and a sealing cavity is formed between the sealing sleeve and one end of each of the two flange plates; the gas supply device communicates with the interiors of the two flange plates through gas inlet pipes, and the gas detection device communicates with the sealing cavity through a gas outlet pipe. The device has the beneficial effects that an external heating mode is adopted, a temperature control system is combined to simulate a constant high-temperature environment, a helium supply device is used for conveying, a certain pressure is kept in a pipeline, a flange periphery helium detection mode is adopted, the detection result is accurate, and parameters such as the leakage rate can be correspondingly calculated.

Description

technical field [0001] The invention relates to the technical field of sealing performance testing equipment, in particular to a sealing performance testing system for externally heated ultra-high temperature flanges. Background technique [0002] The traditional ultra-high temperature flange sealing performance test is mainly through the internal heating method. It is difficult to maintain the internal temperature by using this method. The temperature when sampling and detecting leakage is different from the working temperature, and the internal pressure is maintained, monitored, and trace pressure. Change detection is difficult, resulting in poor accuracy of traditional detection methods. SUMMARY OF THE INVENTION [0003] The technical problem to be solved by the present invention is to provide an externally heated ultra-high temperature flange sealing performance detection system, which aims to solve the problems in the prior art. [0004] The technical scheme that the...

Claims

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Application Information

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IPC IPC(8): G01M3/20H05B3/02H05B3/40
CPCG01M3/202H05B3/40H05B3/02
Inventor 郑小涛刘波马琳伟卢秀庆汪科程凯旋刘阳
Owner WUHAN INSTITUTE OF TECHNOLOGY
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