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A gas leak detection system and method

A gas leak detection and detector technology, which is applied in the detection field, can solve the problems of gas leakage and low detection accuracy, and achieve the effects of reducing detection errors, enhancing light intensity, and preventing gas leakage

Active Publication Date: 2022-07-01
NANJING INST OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to overcome the deficiencies in the prior art, provide a gas leakage detection system and method, and solve the problems in the prior art that the detection accuracy is low and it is not suitable for detecting pipelines without optical fibers

Method used

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  • A gas leak detection system and method

Examples

Experimental program
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Effect test

Embodiment 1

[0032] like figure 1 As shown, a gas leak detection system includes a light source 4 capable of emitting light and a detector 8 for detecting the performance of the light. The light source 4 may be a laser, as long as the light emitted by the light source is stable and not easily affected by other environmental factors In addition, it also includes a sealing cavity 1, the sealing cavity 1 is sealed outside the place to be measured 2, a small hole is opened on the upper end surface of the sealing cavity 1, and a deformation device 101 is installed on the hole, and the deformation device 101 seals the small holes by bonding, the sealing method is not limited to bonding, it only needs to ensure that the entire sealing chamber 1 is sealed; the deformation device 101 can use an elastic diaphragm, but is not limited to this, it can be other pressure changes. The material that undergoes deformation, and the sealing chamber 1 is made of rigid material, so as to ensure that the sealing...

Embodiment 2

[0037] The gas leakage detection system described in Embodiment 1 is used to detect the gas leakage at the place to be measured, and a valve interface of a gas pipeline is selected as the place to be measured. First, when the deformation device 101 is not deformed, the detected The light intensity value is taken as the pre-stored light intensity reference value; then collect the light intensity detection value output by the detector 8 at any moment, and compare the collected light intensity detection value with the pre-stored light intensity reference value. If they are not consistent, it means that there is air leakage at the place to be measured 2; otherwise, it means that there is no air leakage at the place to be measured 2.

[0038] working principle:

[0039] like figure 2 As shown, the deformation device 101 uses an elastic diaphragm; the light source 4 uses a laser; the optical signal splitting element and the optical signal combining element use a coupler; the locat...

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Abstract

The present invention provides a gas leak detection system and method, comprising a light source, an optical signal branching element, an optical signal combining element, a sealing cavity and a detector, wherein the sealing cavity is used for sealing the part to be detected, and the sealing cavity is used for sealing the parts to be detected. A hole is opened, and the hole is covered with a deformation device; the optical signal emitted by the light source is divided into two paths by an optical signal branching element, one of which is irradiated on the outer wall of the sealed cavity, and the other is irradiated on the deformation device; the light The signal combining element can cause double-beam interference between the optical signal reflected by the outer wall of the sealed cavity and the optical signal reflected by the deformation device; the detector can perform light intensity detection on the optical signal after the double-beam interference, and according to the light intensity detection result To judge the gas leakage situation, the gas leakage situation of the place to be measured can be determined simply and intuitively without manual intervention, and the area to be detected can be further sealed to prevent gas leakage in the pipeline.

Description

technical field [0001] The invention relates to a gas leak detection system and method, belonging to the technical field of detection. Background technique [0002] Gas leakage in the pipeline often causes great harm, flammable, explosive or toxic gas. Once leakage occurs, it may cause serious consequences such as casualties and environmental pollution. Especially high-pressure gas pipelines, the consequences of accidents caused by the more serious. At present, the hardware detection methods of gas leakage mainly include internal detection method and external detection method, that is, through the wave detection method based on fluid mechanics, the flow balance method, or the external patrol method and the optical fiber temperature measurement method. These methods not only require a lot of manpower, but also have a lag in detection, which makes it impossible to detect the risk of leakage at the first time. [0003] The optical fiber temperature detection method uses the J...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01M3/14G01B11/16
CPCG01M3/144G01B11/161
Inventor 魏峘
Owner NANJING INST OF TECH
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