CN105698744A - High temperature static strain gauge with compensation strain gauge - Google Patents
High temperature static strain gauge with compensation strain gauge Download PDFInfo
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- CN105698744A CN105698744A CN201511027345.7A CN201511027345A CN105698744A CN 105698744 A CN105698744 A CN 105698744A CN 201511027345 A CN201511027345 A CN 201511027345A CN 105698744 A CN105698744 A CN 105698744A
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- strain gauge
- sensitive grid
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- sprayed coating
- high temperature
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B21/00—Measuring arrangements or details thereof, where the measuring technique is not covered by the other groups of this subclass, unspecified or not relevant
- G01B21/32—Measuring arrangements or details thereof, where the measuring technique is not covered by the other groups of this subclass, unspecified or not relevant for measuring the deformation in a solid
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- Measurement Of Length, Angles, Or The Like Using Electric Or Magnetic Means (AREA)
Abstract
The invention belongs to the technical field of high temperature strain measurement, and discloses a high temperature static strain gauge with a compensation strain gauge. A working strain gauge sensitive grid, a compensation strain gauge sensitive grid and an insulating layer that are adopted are located in a protective layer; the working strain gauge sensitive grid is located between a lower spraying layer and an upper spraying layer; the compensation strain gauge sensitive grid is fixed on the upper spraying layer by two spraying strips, and is consistent with the working strain gauge sensitive grid in position and direction; the insulating layer is placed on the two spraying strips, and an upper surface of the insulating layer is closely attached to the protective layer; and a working strain gauge lead and a compensation strain gauge lead are located at the tail ends of the working strain gauge sensitive grid and the compensation strain gauge sensitive grid, and are led out from preformed holes of the protective layer. The high temperature static strain gauge with the compensation strain gauge utilizes output of the compensation strain gauge to compensate thermal output of the working strain gauge, thereby eliminating thermal output influence of the strain gauge, and improving precision and reliability of a high temperature static strain measurement result; and a thermal output calibration link is reduced, and thus high temperature static strain measurement is simpler and more convenient.
Description
Technical field
The present invention relates to high temperature strain measurement technical field, be specifically related to a kind of high temperature static strain gauge with dummy strain gauge。
Background technology
Technology measured by high temperature strain gauge is the researching high-temperature topmost technological means of structure member mechanical behavior。
Current strain electrical measurement measures temperature major part all below 300 DEG C, the high temperature strain measurement field of more than 300 DEG C particularly 600 DEG C～1000 DEG C, and high temperature strain gauge is big due to its thermal output, must take into elimination thermal output impact when doing static strain and measuring。
Present many employings carry out the curve amendment method of thermal output correction after first carrying out thermal output demarcation；The output demarcation of strain gauge steady state thermal can be easier to realize in resistance furnace, but the temperature ramp that the thermal output of strain gauge is experienced with strain gauge is relevant, particularly there is bigger difference in steady state thermal output and thermal transient output under the environment that is rapidly heated, replacing thermal transient output to carry out thermal output correction with steady state thermal output and can bring bigger error, therefore under the environment that is rapidly heated, strain measurement must carry out thermal transient output demarcation；And carrying out equipment and the method complexity that thermal transient output is demarcated, the difficulty demarcating transient heat output is bigger。When actual high temperature strain measurement, line build-out method can also be adopted to eliminate thermal output impact, but require dummy strain gauge to be arranged in when arranging dummy strain gauge with work strain meter, to there is identical temperature field and do not experience the place of strain, be typically hard to find such pieces of cloth position。
High temperature static strain measurement is when eliminating thermal output and affecting, the difficulty demarcating transient heat output is bigger, it is difficult to find that only experiencing temperature does not experience the pieces of cloth position of strain when arranging dummy strain gauge, causes that strained meter thermal output affects error in data big, have a strong impact on measurement result precision and reliability。
Summary of the invention
For solving the problem of above-mentioned technology, the present invention proposes a kind of high temperature static strain gauge with dummy strain gauge。
The technical solution used in the present invention is as follows:
A kind of high temperature static strain gauge with dummy strain gauge, including work strain meter sensitive grid, lower floor's sprayed coating, upper strata sprayed coating, dummy strain gauge sensitive grid, spray strip, insulating barrier, protective layer, work strain meter lead-in wire, dummy strain gauge lead-in wire；Work strain meter sensitive grid, dummy strain gauge sensitive grid and insulating barrier are positioned at protective layer；Work strain meter sensitive grid is between lower floor's sprayed coating and upper strata sprayed coating, together with the upper and lower surface of work strain meter sensitive grid is fully bonded to upper strata sprayed coating with lower floor sprayed coating；Dummy strain gauge sensitive grid is placed on the sprayed coating upper surface of upper strata, consistent with work strain meter sensitive grid position and direction, is adhesively fixed on the sprayed coating of upper strata by two spray strips；Insulating barrier is placed on above two spray strips, and dummy strain gauge sensitive grid is completely covered, and the upper surface of insulating barrier and protective layer fit tightly；Work strain meter lead-in wire, dummy strain gauge lead-in wire lay respectively at the end of work strain meter sensitive grid, dummy strain gauge sensitive grid, draw from the preformed hole of protective layer。。
Further, work strain meter sensitive grid and dummy strain gauge sensitive grid adopt the naked sensitive grid of the uniaxial strain gage of same model, same batch。
Further, lower floor's sprayed coating, upper strata sprayed coating, spray strip thickness be 0.03～0.3mm, the width of spray strip is 0.3～1.5mm。
Further, lower floor's sprayed coating 2, upper strata sprayed coating 3 are identical with the mass percent of the component of spray strip 5 and each component, and component is Al2O3、SiO2、Fe2O3、TiO2、NaO2, CaO and MgO, the mass percent of each component is Al2O3∶98.3、SiO2∶0.78、Fe2O3∶0.05、TiO2∶0.01、NaO2∶0.3、CaO∶0.2、MgO∶0.36。
Further, insulating barrier adopts asbestos pad material。
Further, protective layer adopts metal alloy sheet, and thickness is 0.03～0.1mm。
It is an advantage of the current invention that:
1. the present invention is at the dummy strain gauge arranged above of work strain meter, the sensitivity of dummy strain gauge is consistent with work strain meter sensitive grid position and direction, the sensitivity of dummy strain gauge is adhesively fixed on the sprayed coating of upper strata by two spray strips simultaneously, dummy strain gauge and work strain meter is made to have identical temperature field, the sensitivity making dummy strain gauge only experiences the temperature that the sensitivity of work strain meter is experienced, and the strain that the sensitivity not experiencing work strain meter is experienced, therefore dummy strain gauge is output as the thermal output of work strain meter, eliminate work strain meter thermal output impact, improve high temperature static strain measurement precision and reliability, reduce thermal output and demarcate link, make the simpler convenience of high temperature static strain measurement。
2. the output of dummy strain gauge can compensate for the transient heat output of work strain meter, and high temperature static strain gauge of the present invention is under the environment that is rapidly heated, it is also possible to reaches the high effect with good reliability of certainty of measurement。
Accompanying drawing explanation
The structural representation of the high temperature static strain gauge with dummy strain gauge that Fig. 1 provides for one embodiment of the invention。
In figure: 1-work strain meter sensitive grid, 2-lower floor sprayed coating, 3-upper strata sprayed coating, 4-dummy strain gauge sensitive grid, 5-spray strip, 6-insulating barrier, 7-protective layer, 8-work strain meter lead-in wire, 9-dummy strain gauge lead-in wire。
Detailed description of the invention
Below in conjunction with accompanying drawing, the present invention is further detailed explanation。
Measuring strain value except the thermal strain needed or mechanical strain in the actual measurement of work strain meter, also include the thermal output that work strain meter temperature influence produces, thermal output is not real strain, it is necessary to be corrected。The present invention, at the dummy strain gauge arranged above of work strain meter, makes dummy strain gauge be output as the thermal output of work strain meter, eliminates work strain meter thermal output impact。
As it is shown in figure 1, a kind of high temperature static strain gauge with dummy strain gauge that one embodiment of the invention provides includes work strain meter sensitive grid 1, lower floor's sprayed coating 2, upper strata sprayed coating 3, dummy strain gauge sensitive grid 4, spray strip 5, insulating barrier 6, protective layer 7, work strain meter lead-in wire 8, dummy strain gauge lead-in wire 9。
Wherein: work strain meter sensitive grid 1, dummy strain gauge sensitive grid 4 and insulating barrier 6 are positioned at protective layer 7；Work strain meter sensitive grid 1 is between lower floor's sprayed coating 2 and upper strata sprayed coating 3, together with the upper and lower surface of work strain meter sensitive grid 1 and lower floor sprayed coating 2 are fully bonded to upper strata sprayed coating 3；Dummy strain gauge sensitive grid 4 is placed on upper strata sprayed coating 3 upper surface, consistent with work strain meter sensitive grid 1 position and direction, is adhesively fixed on upper strata sprayed coating 3 by two spray strips 5；Insulating barrier 6 is placed on above two spray strips 5, and dummy strain gauge sensitive grid 4 is completely covered, and the upper surface of insulating barrier 6 and protective layer 7 fit tightly；Work strain meter lead-in wire 8, dummy strain gauge lead-in wire 9 lay respectively at the end of work strain meter sensitive grid 1, dummy strain gauge sensitive grid 4, draw from the preformed hole of protective layer 7。
In the present embodiment, work strain meter sensitive grid 1 and dummy strain gauge sensitive grid 4 adopt the naked sensitive grid of the uniaxial strain gage of same batch of model HFH-12-125-ZHW, and uniaxial strain gage sensitive grid is of a size of 5 × 3mm。Dummy strain gauge arranged above at work strain meter, the sensitivity of dummy strain gauge is consistent with work strain meter sensitive grid position and direction, the sensitivity of dummy strain gauge is adhesively fixed on the sprayed coating of upper strata by two spray strips simultaneously, dummy strain gauge and work strain meter is made to have identical temperature field, the sensitivity making dummy strain gauge only experiences the temperature that the sensitive grid of work strain meter is experienced, and the strain that the sensitive grid not experiencing work strain meter is experienced, dummy strain gauge is output as the thermal output of work strain meter。Under the working environment that is rapidly heated, the output of dummy strain gauge can compensate for the transient heat output of work strain meter, and high temperature static strain gauge also is able to reach the high effect with good reliability of certainty of measurement。
Lower floor's sprayed coating 2, upper strata sprayed coating 3, spray strip 5 thickness be 0.08mm, the width of spray strip 5 is 1mm；Article two, the centrage of spray strip 5 lay respectively at the 1/3 of grid length of dummy strain gauge sensitive grid 4,2/3 place。
Insulating barrier 6 adopts asbestos pad material, plays insulation and heat insulation effect between protective layer 7 and dummy strain gauge sensitive grid 4。
Protective layer 7 adopts metal alloy sheet, and thickness is 0.08mm, plays the effect of protection strain gauge。
Work strain meter lead-in wire 8 and dummy strain gauge lead-in wire 9 are Φ 0.08mm Aludirome circle lead-in wire。
In the present embodiment, lower floor's sprayed coating 2, upper strata sprayed coating 3 are identical with the mass percent of the component of spray strip 5 and each component, and component is Al2O3、SiO2、Fe2O3、TiO2、NaO2, CaO and MgO, the mass percent of each component is Al2O3∶98.3、SiO2∶0.78、Fe2O3∶0.05、TiO2∶0.01、NaO2∶0.3、CaO∶0.2、MgO∶0.36。
Embodiment of above is merely to illustrate the present invention; and it is not limitation of the present invention; those of ordinary skill about technical field; without departing from the spirit and scope of the present invention; can also make a variety of changes and modification; therefore all equivalent technical schemes fall within scope of the invention, and the scope of patent protection of the present invention should be defined by the claims。
Claims (7)
1. the high temperature static strain gauge with dummy strain gauge, it is characterised in that: include work strain meter sensitive grid (1), lower floor's sprayed coating (2), upper strata sprayed coating (3), dummy strain gauge sensitive grid (4), spray strip (5), insulating barrier (6), protective layer (7), work strain meter lead-in wire (8), dummy strain gauge lead-in wire (9)；Work strain meter sensitive grid (1), dummy strain gauge sensitive grid (4) and insulating barrier (6) are positioned at protective layer (7)；Work strain meter sensitive grid (1) is positioned between lower floor's sprayed coating (2) and upper strata sprayed coating (3), together with the upper and lower surface of work strain meter sensitive grid (1) is fully bonded to upper strata sprayed coating (3) with lower floor's sprayed coating (2)；Dummy strain gauge sensitive grid (4) is placed on upper strata sprayed coating (3) upper surface, consistent with work strain meter sensitive grid (1) position and direction, it is adhesively fixed on upper strata sprayed coating (3) by two spray strips (5)；Insulating barrier (6) is placed on two spray strips (5) above, and dummy strain gauge sensitive grid (4) is completely covered；The upper surface of insulating barrier (6) and protective layer (7) fit tightly；Work strain meter lead-in wire (8), dummy strain gauge lead-in wire (9) lay respectively at the end of work strain meter sensitive grid (1), dummy strain gauge sensitive grid (4), draw from the preformed hole of protective layer (7)。
2. a kind of high temperature static strain gauge with dummy strain gauge as claimed in claim 1, it is characterised in that: work strain meter sensitive grid (1) and dummy strain gauge sensitive grid (4) adopt the naked sensitive grid of the uniaxial strain gage of same model, same batch。
3. a kind of high temperature static strain gauge with dummy strain gauge as claimed in claim 1 or 2, it is characterized in that: lower floor's sprayed coating (2), upper strata sprayed coating (3), spray strip (5) thickness be 0.03～0.3mm, the width of spray strip (5) is 0.5～1.5mm。
4. a kind of high temperature static strain gauge with dummy strain gauge as claimed in claim 3, it is characterized in that: lower floor's sprayed coating (2), upper strata sprayed coating (3), spray strip (5) thickness be 0.03～0.3mm, the width of spray strip (5) is 0.5～1.5mm。
5. a kind of high temperature static strain gauge with dummy strain gauge as described in claim 1,2 or 4, it is characterized in that: lower floor's sprayed coating (2), upper strata sprayed coating (3) are identical with the mass percent of the component of spray strip (5) and each component, and component is Al2O3、SiO2、Fe2O3、TiO2、NaO2, CaO and MgO, the mass percent of each component is Al2O3: 98.3, SiO2: 0.78, Fe2O3: 0.05, TiO2: 0.01, NaO2: 0.3, CaO:0.2, MgO:0.36。
6. a kind of high temperature static strain gauge with dummy strain gauge as described in claim 1,2 or 4, it is characterised in that: insulating barrier (6) adopts asbestos pad material。
7. a kind of high temperature static strain gauge with dummy strain gauge as described in claim 1,2 or 4, it is characterised in that: protective layer (7) adopts metal alloy sheet, and thickness is 0.03～0.1mm。
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201511027345.7A CN105698744B (en) | 2015-12-25 | 2015-12-25 | A kind of high temperature static strain gauge with dummy strain gauge |
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| CN201511027345.7A CN105698744B (en) | 2015-12-25 | 2015-12-25 | A kind of high temperature static strain gauge with dummy strain gauge |
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| CN105698744A true CN105698744A (en) | 2016-06-22 |
| CN105698744B CN105698744B (en) | 2018-05-29 |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106403804A (en) * | 2016-08-23 | 2017-02-15 | 上海交通大学 | High temperature synchronous compensation film strain gauge and its preparation method |
| CN109342251A (en) * | 2018-12-06 | 2019-02-15 | 中国航空工业集团公司北京长城计量测试技术研究所 | It is a kind of for straining the self-checking device and method of quantity collection system |
| CN110945314A (en) * | 2017-05-29 | 2020-03-31 | 奥钢联钢铁公司 | Strain gauge strip and metal strip with such a strain gauge strip |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2356329Y (en) * | 1998-11-12 | 1999-12-29 | 宜兴市申大电子称量有限公司 | High temperature weighing sensor |
| CN2777522Y (en) * | 2005-03-22 | 2006-05-03 | 中国航天科技集团公司第一研究院第七○二研究所 | Double plate self-compensation strain sensor |
| CN102434445A (en) * | 2011-11-08 | 2012-05-02 | 襄樊五二五泵业有限公司 | Axial force measurement device and test method of magnetic pump under instant high temperature difference environment |
| CN103968773A (en) * | 2013-01-29 | 2014-08-06 | 中国计量学院 | Flexible high-temperature raster strain foil for two-dimensional stress detection |
| CN205748351U (en) * | 2015-12-25 | 2016-11-30 | 中国空气动力研究与发展中心超高速空气动力研究所 | A kind of high temperature static strain gauge of band dummy strain gauge |
-
2015
- 2015-12-25 CN CN201511027345.7A patent/CN105698744B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2356329Y (en) * | 1998-11-12 | 1999-12-29 | 宜兴市申大电子称量有限公司 | High temperature weighing sensor |
| CN2777522Y (en) * | 2005-03-22 | 2006-05-03 | 中国航天科技集团公司第一研究院第七○二研究所 | Double plate self-compensation strain sensor |
| CN102434445A (en) * | 2011-11-08 | 2012-05-02 | 襄樊五二五泵业有限公司 | Axial force measurement device and test method of magnetic pump under instant high temperature difference environment |
| CN103968773A (en) * | 2013-01-29 | 2014-08-06 | 中国计量学院 | Flexible high-temperature raster strain foil for two-dimensional stress detection |
| CN205748351U (en) * | 2015-12-25 | 2016-11-30 | 中国空气动力研究与发展中心超高速空气动力研究所 | A kind of high temperature static strain gauge of band dummy strain gauge |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106403804A (en) * | 2016-08-23 | 2017-02-15 | 上海交通大学 | High temperature synchronous compensation film strain gauge and its preparation method |
| CN110945314A (en) * | 2017-05-29 | 2020-03-31 | 奥钢联钢铁公司 | Strain gauge strip and metal strip with such a strain gauge strip |
| CN109342251A (en) * | 2018-12-06 | 2019-02-15 | 中国航空工业集团公司北京长城计量测试技术研究所 | It is a kind of for straining the self-checking device and method of quantity collection system |
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| Publication number | Publication date |
|---|---|
| CN105698744B (en) | 2018-05-29 |
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