CN103226012A - Protection and sealing method for strain measurement of underwater composite - Google Patents
Protection and sealing method for strain measurement of underwater composite Download PDFInfo
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- CN103226012A CN103226012A CN2013101176092A CN201310117609A CN103226012A CN 103226012 A CN103226012 A CN 103226012A CN 2013101176092 A CN2013101176092 A CN 2013101176092A CN 201310117609 A CN201310117609 A CN 201310117609A CN 103226012 A CN103226012 A CN 103226012A
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- obturator
- composite material
- lead
- foil gauge
- strain
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Abstract
The invention discloses a protection and sealing method for strain measurement of an underwater composite. The method is characterized in that a strain gage (1) is covered with a damp-proof agent (2), a ceramic closed primer (3) and a sealant (4); a sealing device is in a cylindrical cavity structure formed by a male adapter and a female adapter; a small hole is formed in the end face of a container wall (5) of the to-be-measured composite; a threaded part of the male adapter of the sealing device penetrates through the small hole in the end face of the container wall of the to-be-measured composite, and is screwed down with the female adapter; and a drawing lead wire of the strain gage (1) penetrates through a cavity of the sealing device, so as to penetrate through a container of the to-be-measured composite. The method reduces additional strain of the strain gage under water pressure, reduces zero shift of strain testing, improves the testing precision, and solves the problems that an error of the strain measurement of the high-pressure underwater composite is large and pressure in the container cannot be kept stable.
Description
Technical field
The present invention relates to a kind of protection sealing method of strain measurement, the protection sealing method of particularly a kind of compound substance under water strain measurement.
Background technology
In fields such as chemical industry, oil, Aero-Space, have and much bear highly pressurised liquid, the composite material vessel of gas effect.The intensity of these composite material pressure containers must be very reliable.For the purpose of safety, each pressure vessel all will carry out withstand voltage experiment before formal the use, and the withstand voltage experiment of safety, economy is to squeeze into water under high pressure.Composite material vessel is under the effect of water under high pressure, and the strain measurement of inwall can be adopted the foil gauge electrical measuring method.The method that the protection of foil gauge and lead-in wire now covers with silicon rubber, drawing conductor part seals with bonding agent usually, but because the electric conductivity of water and the strong perviousness of water under high pressure, make sticking Quality, the insulating resistance value of part foil gauge not reach test request, and silicon rubber can produce additional strain to foil gauge under the hydraulic pressure, have bigger zero drift in the measuring process, measuring error is bigger.The conductor part of drawing of foil gauge has water under high pressure and oozes out in addition, makes container inner pressure can not keep stable.
Summary of the invention
The object of the invention is to provide the protection sealing method of a kind of compound substance under water strain measurement, solves under the water under high pressure compound substance strain measurement error and reaches container inner pressure greatly and can not keep stable problem.
The concrete steps of the protection sealing method of a kind of compound substance under water strain measurement are:
The first step is protected foil gauge and is drawn lead
After foil gauge pastes the composite material vessel inwall, select for use rosin and vaseline mixture, be coated on the foil gauge, brush ceramic airtight priming paint then, form waterproof membrane, cover fluid sealant at last as anti-blushing agent.For avoiding influencing measurement effect because of water disturbance under 0 ~ 2MPa pressure and wire insulation defectiveness, draw lead and all tie up bunchy and smear vaseline, with the plastic skin parcel, be fixed on then on the tested composite material vessel inwall again.
Second step was installed obturator
Obturator is the cylindrical cavity body structure that male connection and female adapter constitute, tested composite material vessel wall end face is opened aperture, outer container wall all is processed with groove in around the described aperture, the embedded rubber washer of groove, the threaded portion of obturator male connection are tightened with the obturator female adapter after passing the aperture of tested composite material vessel wall end face.The lead of drawing of foil gauge passes the obturator cavity, thereby pass tested composite material vessel, in order to prevent that the plastic peel of drawing lead from producing the gap because of contraction under hydraulic pressure, peel off one section with drawing the lead plastic peel in the obturator chamber, drawing lead peels off the crust section and puts the insulation magnetic tube, inject fastening glue in the insulation magnetic tube, inject fluid sealant in the last whole obturator chamber.
So far the protection that has realized compound substance strain measurement under water is airtight.
This method has solved under the water under high pressure compound substance strain measurement error and has reached container inner pressure greatly and can not keep stable problem, has reduced the additional strain that foil gauge causes under hydraulic pressure, reduces strain testing zero point drift, improves measuring accuracy.
Description of drawings
Foil gauge protection synoptic diagram in the protection sealing method of a kind of compound substance under water of Fig. 1 strain measurement;
Lead-in wire closed structure synoptic diagram in the protection sealing method of a kind of compound substance under water of Fig. 2 strain measurement.
1. foil gauge 2. anti-blushing agents 3. ceramic seal coat 4. fluid sealants 5. chamber walls 6. rubber washers 7. are drawn lead
8. magnetic tube 9. obturators insulate.
Embodiment
The concrete steps of the protection sealing method of a kind of compound substance under water strain measurement are:
The first step is protected foil gauge and is drawn lead
After foil gauge 1 pastes the composite material vessel inwall, select for use rosin and vaseline mixture, be coated on the foil gauge 1, brush ceramic airtight priming paint 3 then, form waterproof membrane, cover fluid sealant 4 at last as anti-blushing agent 2.For avoiding influencing measurement effect because of water disturbance under 0 ~ 2MPa pressure and wire insulation defectiveness, draw lead 7 and all tie up bunchy and smear vaseline, with the plastic skin parcel, be fixed on then on the tested composite material vessel inwall again.
Second step was installed obturator
Obturator 9 is the cylindrical cavity body structure of male connection and female adapter formation, tested composite material vessel wall 5 end faces are opened aperture, outer container wall all is processed with groove in around the described aperture, the embedded rubber washer 6 of groove, the threaded portion of obturator 9 male connections are tightened with female adapter after passing the aperture of tested composite material vessel wall end face.The lead 7 of drawing of foil gauge 1 passes the obturator cavity, thereby pass tested composite material vessel, in order to prevent that the plastic peel of drawing lead 7 from producing the gap because of contraction under hydraulic pressure, peel off one section with drawing lead 7 plastic peels in obturator 9 chambeies, draw lead 7 peel off the crust section put the insulation magnetic tube 8, inject fastening glue in the insulation magnetic tube 8, inject fluid sealant 4 in the last whole obturator chamber.
So far the protection that has realized compound substance strain measurement under water is airtight.
Claims (1)
1. the protection sealing method of a compound substance strain measurement under water is characterized in that the concrete steps of this method are:
The first step is protected foil gauge and is drawn lead
After foil gauge (1) pastes the composite material vessel wall, select for use rosin and vaseline mixture, be coated on the foil gauge (1), brush ceramic airtight priming paint (3) then, form waterproof membrane, cover fluid sealant (4) at last as anti-blushing agent (2); For avoiding influencing measurement effect because of water disturbance under 0 ~ 2MPa pressure and wire insulation defectiveness, draw lead (7) and all tie up bunchy and smear vaseline, with the plastic skin parcel, be fixed on then on the tested composite material vessel inwall again;
Second step was installed obturator
Obturator (9) is the cylindrical cavity body structure of male connection and female adapter formation, tested composite material vessel wall (5) end face is opened aperture, outer container wall (5) all is processed with groove in around the described aperture, the embedded rubber washer of groove (6), the threaded portion of obturator (9) male connection are tightened with female adapter after passing the aperture of tested composite material vessel wall end face; The lead (7) of drawing of foil gauge (1) passes the obturator cavity, thereby pass tested composite material vessel, in order to prevent that the plastic peel of drawing lead (7) from producing the gap because of contraction under hydraulic pressure, peel off one section with drawing lead (7) plastic peel in obturator (9) chamber, draw lead (7) peel off the crust section put the insulation magnetic tube (8), inject fastening glue in the insulation magnetic tube (8), inject fluid sealant (4) in the last whole obturator chamber;
So far the protection that has realized compound substance strain measurement under water is airtight.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310117609.2A CN103226012B (en) | 2013-04-07 | 2013-04-07 | Protection and sealing method for strain measurement of underwater composite |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310117609.2A CN103226012B (en) | 2013-04-07 | 2013-04-07 | Protection and sealing method for strain measurement of underwater composite |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103226012A true CN103226012A (en) | 2013-07-31 |
| CN103226012B CN103226012B (en) | 2015-07-15 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310117609.2A Active CN103226012B (en) | 2013-04-07 | 2013-04-07 | Protection and sealing method for strain measurement of underwater composite |
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| CN (1) | CN103226012B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104743135A (en) * | 2015-03-31 | 2015-07-01 | 中国飞机强度研究所 | Strain gauge protection method |
| CN110873616A (en) * | 2018-08-31 | 2020-03-10 | 梅特勒-托利多(常州)精密仪器有限公司 | Moisture-proof strain gauge and preparation method thereof |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2728916A1 (en) * | 1977-06-27 | 1979-01-18 | Hottinger Messtechnik Baldwin | METHOD AND DEVICE FOR COVERING A STRAIN GAUGE |
| SU1762114A1 (en) * | 1990-08-21 | 1992-09-15 | Московское научно-производственное объединение "Измеритель" | Method of fastening strain gauge at the unit |
| JPH0735628A (en) * | 1993-07-16 | 1995-02-07 | Kyowa Electron Instr Co Ltd | Structure and method for covering strain gate affixed part |
| CN2527999Y (en) * | 2002-03-01 | 2002-12-25 | 天津大学 | Scouring-proof water-proof box for structure stress determination on sea |
| CN201653350U (en) * | 2010-03-30 | 2010-11-24 | 中国船舶重工集团公司第七〇二研究所 | Water-proof sealing structure of strain gauge |
| CN102539036A (en) * | 2010-12-31 | 2012-07-04 | 广西大学 | Welded type underwater stress measuring device |
-
2013
- 2013-04-07 CN CN201310117609.2A patent/CN103226012B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2728916A1 (en) * | 1977-06-27 | 1979-01-18 | Hottinger Messtechnik Baldwin | METHOD AND DEVICE FOR COVERING A STRAIN GAUGE |
| SU1762114A1 (en) * | 1990-08-21 | 1992-09-15 | Московское научно-производственное объединение "Измеритель" | Method of fastening strain gauge at the unit |
| JPH0735628A (en) * | 1993-07-16 | 1995-02-07 | Kyowa Electron Instr Co Ltd | Structure and method for covering strain gate affixed part |
| CN2527999Y (en) * | 2002-03-01 | 2002-12-25 | 天津大学 | Scouring-proof water-proof box for structure stress determination on sea |
| CN201653350U (en) * | 2010-03-30 | 2010-11-24 | 中国船舶重工集团公司第七〇二研究所 | Water-proof sealing structure of strain gauge |
| CN102539036A (en) * | 2010-12-31 | 2012-07-04 | 广西大学 | Welded type underwater stress measuring device |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104743135A (en) * | 2015-03-31 | 2015-07-01 | 中国飞机强度研究所 | Strain gauge protection method |
| CN110873616A (en) * | 2018-08-31 | 2020-03-10 | 梅特勒-托利多(常州)精密仪器有限公司 | Moisture-proof strain gauge and preparation method thereof |
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| Publication number | Publication date |
|---|---|
| CN103226012B (en) | 2015-07-15 |
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