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L-shaped acoustic emission sensor array fixture and test method for detecting gas leakage by L-shaped acoustic emission sensor array fixture

An acoustic emission sensor, sensor technology, applied in the direction of detecting the appearance of fluid at the leak point, supporting the machine, using liquid/vacuum for liquid tightness measurement, etc. And other issues

Active Publication Date: 2021-05-07
HARBIN INST OF TECH +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0006] The purpose of the present invention is to solve the cumbersome and difficult operation of the existing L-shaped acoustic emission sensor array in the gas leakage detection technology test due to the large number of sensors, small size and spacing, and frequent changes in angle and position. The accuracy is relatively low and the test takes a long time, and then an L-shaped acoustic emission sensor array fixture and its test method for detecting gas leakage are provided

Method used

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  • L-shaped acoustic emission sensor array fixture and test method for detecting gas leakage by L-shaped acoustic emission sensor array fixture
  • L-shaped acoustic emission sensor array fixture and test method for detecting gas leakage by L-shaped acoustic emission sensor array fixture
  • L-shaped acoustic emission sensor array fixture and test method for detecting gas leakage by L-shaped acoustic emission sensor array fixture

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specific Embodiment approach 1

[0033] Specific implementation mode one: combine Figure 1 to Figure 9 Describe this embodiment, an L-shaped acoustic emission sensor array fixture of this embodiment, which includes a sensor fixing plate 1, a pressure plate 2, an adjustment pillar 3, a pressure block 5, several soft gaskets 4 and several hexagon socket bolts 6. The sensor fixing plate 1 and the pressure plate 2 are both square metal flat plates with the same plane size. The sensor fixing plate 1 and the pressure plate 2 are arranged horizontally from top to bottom; A plurality of circular sensor fixing grooves 7 arranged in an L shape, the sensor fixing grooves 7 are cylindrical through holes along the thickness direction of the sensor fixing plate 1, between each sensor fixing groove 7 and the edge of the sensor fixing plate 1 Wire grooves 8 are respectively provided, and the wire grooves 8 communicate with the corresponding sensor fixing grooves 7. Several long fixed threaded holes 9 are arranged on the dia...

specific Embodiment approach 2

[0035] Specific implementation mode two: combination Figure 1 to Figure 4 To describe this embodiment, the thickness of the sensor fixing plate 1 in this embodiment is 1-2 mm smaller than the height of the sensor 13 , and the planar size of the sensor fixing plate 1 is larger than the size of the L-shaped array. It is set in this way to facilitate the overall connection and function realization of the jig. Other compositions and connections are the same as in the first embodiment.

specific Embodiment approach 3

[0036] Specific implementation mode three: combination Figure 1 to Figure 4 To describe this embodiment, the outer diameter of the sensor 13 in this embodiment is smaller than the inner diameter of the sensor fixing groove 7, and the inner diameter of the sensor fixing groove 7 and the outer diameter of the sensor 13 are clearance fit. In this way, the number of multiple sensor fixing grooves 7 arranged in an L shape and the distance between them are determined by the requirements of the gas leakage detection test for the L-shaped sensor array. The inner diameter of the sensor fixing groove 7 is slightly larger than the outer diameter of the cylindrical sensor 13, and is clearance fit with the outer diameter of the sensor 13. Other compositions and connections are the same as those in Embodiment 1 or Embodiment 2.

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Abstract

The invention discloses an L-shaped acoustic emission sensor array fixture and a test method for detecting gas leakage by the L-shaped acoustic emission sensor array fixture, and relates to the field of gas leakage detection tests. The problems that in a gas leakage detection technology test of an existing L-shaped acoustic emission sensor array, due to the fact that the number of sensors is large, the size and distance are small, and the angles and positions are frequently changed, operation is tedious, the difficulty is large, the sensor position precision is relatively low, and test consumed time is long are solved. A plurality of round sensor fixing grooves arranged in an L shape are formed in the positions, close to the edge, of the two adjacent sides of the upper end face of a sensor fixing plate, a wire groove is formed between each sensor fixing groove and the edge of the sensor fixing plate, and a pressing plate is fixedly connected with the sensor fixing plate through hexagon socket screws. A sensor is installed in each sensor fixing groove, and a soft gasket is arranged between each sensor and the pressing plate. A pressing block is freely arranged on the pressing plate. The L-shaped acoustic emission sensor array fixture and the test method for detecting gas leakage by the L-shaped acoustic emission sensor array fixture are used for the gas leakage detection test.

Description

technical field [0001] The invention relates to the field of gas leakage detection tests, in particular to an L-shaped acoustic emission sensor array fixture and a test method for detecting gas leakage. Background technique [0002] Aiming at the detection problem of gas leakage in airtight containers, a detection method based on acoustic emission has been proposed. By arranging a sensor array composed of multiple acoustic emission sensors on the container wall, the leakage source can be sensed and oriented, and the location of the leakage source can be determined by combining the orientation results of multiple monitoring positions. In order to develop this technology, a large number of laboratory tests are required to understand the characteristics of acoustic emission signals on wall panels with different structural forms, determine a reasonable signal processing method, and conduct technical verification. [0003] In this type of test, people often use plane plates of d...

Claims

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Application Information

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IPC IPC(8): F16M11/04F16M11/16G01M3/24
CPCF16M11/04F16M11/16G01M3/24
Inventor 迟润强张铎曹武雄庞宝君杨宁
Owner HARBIN INST OF TECH
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