CN104374313A - Resistance strain gauge under harsh environment - Google Patents
Resistance strain gauge under harsh environment Download PDFInfo
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- CN104374313A CN104374313A CN201410697268.5A CN201410697268A CN104374313A CN 104374313 A CN104374313 A CN 104374313A CN 201410697268 A CN201410697268 A CN 201410697268A CN 104374313 A CN104374313 A CN 104374313A
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- resistance strain
- strain gage
- substrate
- sensitive grid
- strain gauge
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- Measurement Of Length, Angles, Or The Like Using Electric Or Magnetic Means (AREA)
- Measurement Of Force In General (AREA)
Abstract
The invention discloses a resistance strain gauge under a harsh environment. The resistance strain gauge comprises a substrate which is formed by an upper thin sheet layer and a lower thin sheet layer in a pasting mode. A sensitive grid is arranged between the upper thin sheet layer and the lower thin sheet layer. Two terminal blocks are arranged at one end of the substrate. The terminal blocks are connected with the sensitive grid through tinned wires. The resistance strain gauge can keep normal effective working under various harsh environments.
Description
Technical field
The invention belongs to strain monitoring technical field, relate to the resistance strain gage under a kind of harsh and unforgiving environments, be specially a kind of foil gauge be applicable under water conservancy marine traffic engineering harsh and unforgiving environments.
Background technology
Resistance strain gage also claims strain ga(u)ge, and being called for short foil gauge or strainometer, is the element being configured for monitor strain by sensitive grid etc.The change that mechanical component strains can be converted to resistance variations by it.Under in water conservancy marine traffic engineering, xoncrete structure or steel construction are all in various harsh and unforgiving environments (as storehouse water long period of soaking, tidal scour, acid rain, chloride ion corrosion etc.), its strain monitoring adopts electric resistance strain film method usually.Resistance strain gage is pasted on component surface as sensing element, and because component surface strains after member stress, foil gauge also makes the resistance of foil gauge change thereupon being out of shape.But, according to the strain gauge adhesion method be suitable only under general environment (dry, without washing away, normal temperature) in the past in the monitoring of water conservancy marine traffic engineering structural strain, easily occur that foil gauge lost efficacy, and crash rate is higher, main cause has: (1) foil gauge substrate insulation thin slice is met water or lost efficacy by solution corrosion; (2) foil gauge lead-in wire with wire connection procedure in easily pull and cause foil gauge to lose efficacy; (3) external protection anti-impact brushing force ability is weak, the stressed fracture of wire of foil gauge sensitive grid etc.
Summary of the invention
The present invention is directed to the defect that prior art exists, aim to provide the resistance strain gage under a kind of harsh and unforgiving environments.
The present invention realizes especially by following technical scheme:
A resistance strain gage under harsh and unforgiving environments, comprises substrate, and described substrate is made up of upper and lower two-layer sheet adhering, is furnished with sensitive grid between upper and lower two-layer thin slice; Be provided with two connection terminals in one end of substrate, described connection terminal is connected with sensitive grid by tinned wird.
Resistance strain gage of the present invention also comprises adhered layer, and described adhered layer is arranged on an outside surface of substrate.
Described substrate is made up of one-component neutrality solidification silica gel, can energy long-term work under-60 ~ 200 DEG C of conditions.
Described sensitive grid is that the constantan wire of 0.02 ~ 0.05mm or nickel filament are coiled into palisade or metal forming and corrode into palisade and obtain by diameter.
Described connection terminal is the copper-clad plate being welded with two tin points, goes between for fixing sensitive grid, is convenient to be connected with wire.
Described adhered layer is made up of epoxide resin AB glue, and curing rate is fast, and bonding strength is high, cooperative transformation performance is good; Acid and alkali-resistance, moistureproof and waterproof, has good insulation, measuring body physical characteristics.
Beneficial effect of the present invention is: resistance strain gage of the present invention can prevent from pullling lead-in wire in wiring process, and the foil gauge caused lost efficacy, under various harsh and unforgiving environments (as storehouse water long period of soaking, tidal scour, acid rain, chloride ion corrosion etc.), foil gauge all can be kept normally effectively to work simultaneously.
Accompanying drawing explanation
Fig. 1 is the structural representation of resistance strain gage of the present invention;
Fig. 2 is that embodiment resistance strain gage strains variation diagram in time in the seawater;
Indicate in accompanying drawing and illustrate: substrate 1, sensitive grid 2, connection terminal 3.
Embodiment
Below in conjunction with embodiment, the present invention is described further, the following stated, only to preferred embodiment of the present invention, not do other forms of restriction to the present invention, any those skilled in the art may utilize the technology contents of above-mentioned announcement to be changed to the Equivalent embodiments of equal change.Everyly do not depart from the present invention program's content, according to technical spirit of the present invention to any simple modification made for any of the above embodiments or equivalent variations, all drop in protection scope of the present invention.
Embodiment 1
As shown in Figure 1, resistance strain gage under a kind of harsh and unforgiving environments, comprise substrate 1, described substrate 1 is made up of upper and lower two-layer sheet adhering, and substrate 1 material is one-component neutrality solidification silica gel, and the elastic body formed after solidification has excellent shockproof properties, good insulating, ageing-resistant, water-fast, can long-term work under-60 ~ 200 DEG C of conditions; Being furnished with sensitive grid 2 between upper and lower two-layer thin slice, is the constantan wire of 0.02 ~ 0.05mm or nickel filament is coiled into palisade or metal forming corrodes into palisade by diameter; Two connection terminals 3 are provided with in one end of substrate 1, described connection terminal 3 is connected with sensitive grid 2 by tinned wird, and connection terminal 3, for being welded with the copper-clad plate of two tin points, goes between for fixing sensitive grid 2, be convenient to be connected with wire, prevent in wiring process, pullling lead-in wire and cause foil gauge to lose efficacy.
This resistance strain gage substrate lower surface is coated with adhered layer, and adhered layer is made up of epoxide resin AB glue, and curing rate is fast, and bonding strength is high, cooperative transformation performance is good; Acid and alkali-resistance, moistureproof and waterproof, has good insulation, measuring body physical characteristics.
This foil gauge in actual mechanical process its suprabasil sensitive grid by settable cementitious material (epoxide resin AB glue) paste, and when variation of ambient temperature can with curing materials cooperative transformation.Because foil gauge lead-in wire is effectively fixed, under water impact, wind load and other external loads effects, remain fixing insulation resistance, not easily lost efficacy.
Embodiment 2 marine denudation is tested
The test cube of 150mm × 150mm × 150mm is puted up embodiment 1 foil gauge, is immersed in the seawater test containing KCL5% concentration, observe 100 days, according to the resistance value of foil gauge and the curve of time probability, judge the validity of this method of attaching.
As shown in Figure 2, resistance strain gage of the present invention in the seawater resistivity without any change, illustrate that resistance strain gage of the present invention can maintain normal work for a long time in several sections of harsh environment.
Claims (5)
1. the resistance strain gage under harsh and unforgiving environments, comprises substrate, it is characterized in that: described substrate is made up of upper and lower two-layer sheet adhering, is furnished with sensitive grid between upper and lower two-layer thin slice; One end of substrate is provided with two connection terminals, and described connection terminal is connected with sensitive grid by tinned wird.
2. resistance strain gage according to claim 1, is characterized in that: described substrate is made up of the neutral solidification of silicon glue material of one-component, can energy long-term work under-60 ~ 200 DEG C of conditions.
3. resistance strain gage according to claim 1, is characterized in that: the constantan wire of described sensitive grid to be diameter be 0.02 ~ 0.05mm or nickel filament are coiled into palisade and obtain;
Or metal forming corrode into palisade obtain.
4. resistance strain gage according to claim 1, is characterized in that: described connection terminal is the copper-clad plate being welded with two tin points, goes between for fixing sensitive grid, is convenient to be connected with wire.
5. resistance strain gage according to claim 1, is characterized in that: described resistance strain gage also comprises adhered layer, and described adhered layer is arranged on an outside surface of substrate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410697268.5A CN104374313A (en) | 2014-11-26 | 2014-11-26 | Resistance strain gauge under harsh environment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410697268.5A CN104374313A (en) | 2014-11-26 | 2014-11-26 | Resistance strain gauge under harsh environment |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104374313A true CN104374313A (en) | 2015-02-25 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410697268.5A Pending CN104374313A (en) | 2014-11-26 | 2014-11-26 | Resistance strain gauge under harsh environment |
Country Status (1)
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| CN (1) | CN104374313A (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105043237A (en) * | 2015-05-27 | 2015-11-11 | 湖南省楚嘉科技发展有限公司 | Health monitoring system for glass curtain wall, and installation method for health monitoring system |
| CN106052545A (en) * | 2016-06-14 | 2016-10-26 | 河海大学 | Quick wiring device for strain gauge on steel surface and strain measurement method |
| CN106289598A (en) * | 2016-10-31 | 2017-01-04 | 中航电测仪器股份有限公司 | A kind of strain ga(u)ge for concrete stress test |
| CN107421664A (en) * | 2017-05-24 | 2017-12-01 | 天津城建大学 | It is a kind of to measure steel and the foil gauge and method of attaching of concrete binding sliding |
| CN107966225A (en) * | 2017-11-23 | 2018-04-27 | 蚌埠市勇创机械电子有限公司 | A kind of pressure sensor |
| CN109238873A (en) * | 2018-09-18 | 2019-01-18 | 中国南方电网有限责任公司超高压输电公司检修试验中心 | A kind of device measuring hollow combined insulator full skirt bend resistance intensity |
| CN109373888A (en) * | 2018-10-25 | 2019-02-22 | 大同煤矿集团有限责任公司 | It is a kind of for testing the sensor for adopting seat earth deformation extent |
Citations (4)
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| JPH0835808A (en) * | 1994-02-15 | 1996-02-06 | Hottinger Baldwin Messtech Gmbh | Strain gauge and manufacture of strain gauge and measurement-quantity transmitter |
| CN103727871A (en) * | 2013-12-20 | 2014-04-16 | 广西科技大学 | Resistance strain gauge |
| CN203657736U (en) * | 2013-12-04 | 2014-06-18 | 王亚洲 | High temperature resistance strain gauge |
| CN103983182A (en) * | 2014-05-27 | 2014-08-13 | 相斌辉 | Portable type strain gauge adhering technology |
-
2014
- 2014-11-26 CN CN201410697268.5A patent/CN104374313A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0835808A (en) * | 1994-02-15 | 1996-02-06 | Hottinger Baldwin Messtech Gmbh | Strain gauge and manufacture of strain gauge and measurement-quantity transmitter |
| CN203657736U (en) * | 2013-12-04 | 2014-06-18 | 王亚洲 | High temperature resistance strain gauge |
| CN103727871A (en) * | 2013-12-20 | 2014-04-16 | 广西科技大学 | Resistance strain gauge |
| CN103983182A (en) * | 2014-05-27 | 2014-08-13 | 相斌辉 | Portable type strain gauge adhering technology |
Non-Patent Citations (4)
| Title |
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| 周传德等: "《机械工程测试技术》", 31 January 2014 * |
| 张克猛等: "《工程动力学实验》", 31 December 2002 * |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105043237A (en) * | 2015-05-27 | 2015-11-11 | 湖南省楚嘉科技发展有限公司 | Health monitoring system for glass curtain wall, and installation method for health monitoring system |
| CN106052545A (en) * | 2016-06-14 | 2016-10-26 | 河海大学 | Quick wiring device for strain gauge on steel surface and strain measurement method |
| CN106289598A (en) * | 2016-10-31 | 2017-01-04 | 中航电测仪器股份有限公司 | A kind of strain ga(u)ge for concrete stress test |
| CN107421664A (en) * | 2017-05-24 | 2017-12-01 | 天津城建大学 | It is a kind of to measure steel and the foil gauge and method of attaching of concrete binding sliding |
| CN107966225A (en) * | 2017-11-23 | 2018-04-27 | 蚌埠市勇创机械电子有限公司 | A kind of pressure sensor |
| CN109238873A (en) * | 2018-09-18 | 2019-01-18 | 中国南方电网有限责任公司超高压输电公司检修试验中心 | A kind of device measuring hollow combined insulator full skirt bend resistance intensity |
| CN109373888A (en) * | 2018-10-25 | 2019-02-22 | 大同煤矿集团有限责任公司 | It is a kind of for testing the sensor for adopting seat earth deformation extent |
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Application publication date: 20150225 |
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