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Strain gauge waterproof sealing method and its structure

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: 2011-12-28
中国船舶重工集团公司第七〇二研究所
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  • 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 waterproof sealing method and its structure
  • Strain gauge waterproof sealing method and its structure
  • Strain gauge waterproof sealing method and its structure

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Embodiment Construction

[0017] The waterproof sealing method for strain gauges of the present invention includes the following specific steps:

[0018] Step 1: Locally polish the area to be tested on the surface of the structure under test 1 to remove the oxide film on the surface and polish it to make the surface basically flat;

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

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

[0021] Step 4: Firmly weld the connecting terminals of the measuring lead 6 and the strain gauge 2;

[0022] Step 5: Paste the SB type waterproof sealant 3 on the surface of the strain gauge 2, and press it with your fingers on the release paper until the SB type waterproof sealant 3 evenly covers the strain gauge 2 and the wiring terminals and part of the measurement lead 6; The manufactur...

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Abstract

The invention relates to a strain gauge waterproof sealing method and its structure. Strain gauges are pasted on the surface of the test point of the structure to be measured, the measuring wires are welded on the connection terminals of the strain gauges, and SB type waterproof sealant is sequentially covered on the upper part of the strain gauges. , aluminum foil tape and waterproof paint to completely cover the strain gauge and its surrounding area. The invention can not only greatly shorten the sealing operation time of the strain gauge, and the operation time for a single test point is not more than 5 minutes, but also can ensure a long-term waterproof sealing effect due to the multiple sealing of waterproof paint, aluminum foil and SB type waterproof sealant, In a highly corrosive seawater environment, it can be effectively sealed and waterproof for at least half a year.

Description

Technical field [0001] The invention relates to the field of detection technology, 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 and strain tests on the structure under test. During the test, it is necessary to fix the strain gauges on the surface of the structure under test and achieve sealing and waterproofing. , The measuring wire and the structural material need to maintain good insulation, and the resistance value needs to be greater than 100MΩ. Commonly used sealing methods usually use brazing a thin metal cover 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 a thin metal cover to achieve sealing, but the scope of application of this method Limited, d...

Claims

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Application Information

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Patent Type & Authority Patents(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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