Strain gauge water-proof sealing method and structure thereof

A waterproof sealing and strain gauge technology, applied in the field of inspection, can solve the problems of inability to effectively seal the strain gauge, shorten the operation time, etc., and achieve the effect of shortening the sealing operation time.

Inactive Publication Date: 2010-08-25
中国船舶重工集团公司第七〇二研究所
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  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] In view of the above-mentioned shortcomings of existing underwater test experiments that cannot effectively seal the strain gauges, the applicant provides a strain gauge waterproof sealing method and its structure, so that the strain gauges can be quickly and effectively sealed, greatly shortening the operating time. time, improving the sealing effect

Method used

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  • Strain gauge water-proof sealing method and structure thereof
  • Strain gauge water-proof sealing method and structure thereof
  • Strain gauge water-proof sealing method and structure thereof

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Embodiment Construction

[0017] The strain gauge waterproof sealing method of the present invention comprises the following specific steps:

[0018] Step 1: Partially grind the area to be tested on the surface of the tested structure 1 to remove the oxide film on the surface and perform polishing treatment to make the surface basically smooth;

[0019] Step 2: Use acetone or other cleaning agents to clean the polished area of ​​the surface of the tested structure 1 several times to remove oil and dust;

[0020] Step 3: Use instant glue to firmly paste the strain gauge 2 on the surface of the tested structure 1 after polishing and cleaning;

[0021] Step 4: Weld the measuring wire 6 and the terminal of the strain gauge 2 firmly;

[0022] Step 5: Paste the SB type waterproof sealant 3 on the surface of the strain gauge 2, put the anti-adhesive paper on it and press it with your fingers until the SB type waterproof sealant 3 evenly covers the strain gauge 2, the connection terminals and some of the meas...

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Abstract

The invention relates to a strain gauge water-proof sealing method and a structure thereof. A strain gauge is adhered on the surface of a test point of a tested structure; a measuring lead wire is welded on a wiring terminal of the strain gauge; and an SB-type water-proof sealant, an aluminum foil tape and waterproof paint are covered on the upper part of the strain gauge sequentially so that the strain gauge and the peripheral area thereof are covered completely. The method and the structure can shorten the sealing operation time of the strain gauge greatly, wherein the operation time for a single test point is not more than 5 minutes; because the multi-seal of the water-proof paint, the aluminum foil tape and the SB-type water-proof sealant, the water-proof sealing effect can be ensured for a long time; and the water-proof sealing effect can last at least more than half a year in an seawater environment with high corrosiveness.

Description

technical field [0001] The invention relates to the technical field of detection, in particular to a waterproof sealing method for strain gauges. Background technique [0002] In the fields of shipbuilding and marine engineering, in order to assess the strength and stability of the structure under water, it is often necessary to perform stress-strain tests on the structure under test. During the test, the strain gauge needs to be fixed on the surface of the structure under test to achieve sealing and waterproofing. The strain gauge 1. Good insulation should be maintained between the measuring wire and the structural material, and the resistance value should be greater than 100MΩ. Commonly used sealing methods usually use brazing thin metal covers or glue covering and bonding. For example, the invention patent 03137103.5 "Strain Gauge Deep Sea Insulation Method and Device" discloses a method of brazing thin metal covers to achieve sealing, but the scope of application of this...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01B7/16
Inventor 沈永春王永军徐强杜青海俞圣杰赵慧
Owner 中国船舶重工集团公司第七〇二研究所
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