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On-line calibration device and method for leakage detection instrument

A technology of a calibration device and a calibration method, which is applied in the field of measurement and can solve problems such as the lack of calibration devices for leak detection instruments.

Active Publication Date: 2014-12-24
LANZHOU INST OF PHYSICS CHINESE ACADEMY OF SPACE TECH
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Currently, there is no calibration device for this leak detection instrument

Method used

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  • On-line calibration device and method for leakage detection instrument
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  • On-line calibration device and method for leakage detection instrument

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Embodiment Construction

[0021] The present invention will be described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0022] Such as figure 1 As shown, an online calibration device for a leak detection instrument designed by the present invention, the leak detection instrument 21 suitable for the calibration device includes a container 19, a pressure gauge 18, other parts 20, etc., and the calibration device is mainly composed of a gas supply system I1, a supply Air system II14, needle valve 2, stop valve 3, 6, 8, 10, 13, 15, 17, plenum chamber 5, positive pressure standard leak hole 9, calibration chamber 12, pressure gauge I4, pressure gauge II11, air extraction Composed of system I7 and air extraction system II16; the connection relationship is:

[0023] The air supply system I1 is connected to the plenum 5 through the needle valve 2 and the shut-off valve 3 in turn to form the first air supply pipeline. The air extraction system I7 is connected to the p...

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Abstract

The invention provides an on-line calibration device and method for a leakage detection instrument. The leakage detection instrument (21) comprises a container (19) and a pressure meter (18). The calibration device is mainly composed of a gas supply system I (1), a gas supply system II (14), a needle valve (2), stop valves (3,6,8,10, 13,15 and 17), a pressure stabilizing chamber (5), a positive pressure standard leak (9), a calibration chamber (12), a pressure meter I (4), a pressure meter II (11), an air pumping system I (7) and an air pumping system II (16). The on-line calibration device can carry out calibration on the leakage detection instrument based on the constant volume pressure rise theory, is wide in calibration range and is used for calibrating various leak indication gases.

Description

technical field [0001] The invention relates to an online calibration device and method for a leak detection instrument, belonging to the technical field of measurement. Background technique [0002] The leak detection instrument based on the principle of constant volume boost method is a new type of leak detection instrument. It is easy to operate and is suitable for detecting different gas leakage values ​​of various vacuum systems and devices. Therefore, it is very important to accurately calibrate the leak detection instrument. meaning. With the development of my country's manned spacecraft, space station and other aerospace technologies, the air tightness detection of small volumes such as between the cabin doors of the spacecraft, and between the cabin doors of the spacecraft and the space station hatches are all based on the principle of the constant volume boost method. leak detection instruments, so there is an increasing demand for this type of leak detection instr...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01M3/26
Inventor 赵澜冯焱张伟文李得天张瑞芳杨长青魏万印刘珈彤
Owner LANZHOU INST OF PHYSICS CHINESE ACADEMY OF SPACE TECH
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