CN205748351U - A kind of high temperature static strain gauge of band dummy strain gauge - Google Patents
A kind of high temperature static strain gauge of band dummy strain gauge Download PDFInfo
- Publication number
- CN205748351U CN205748351U CN201521135888.6U CN201521135888U CN205748351U CN 205748351 U CN205748351 U CN 205748351U CN 201521135888 U CN201521135888 U CN 201521135888U CN 205748351 U CN205748351 U CN 205748351U
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- Prior art keywords
- strain gauge
- sensitive grid
- strain
- dummy
- sprayed coating
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Abstract
This utility model belongs to high temperature strain measurement technical field, discloses the high temperature static strain gauge of a kind of band dummy strain gauge.Work strain meter sensitive grid, dummy strain gauge sensitive grid and insulating barrier that this utility model uses are positioned at protective layer；Work strain meter sensitive grid is between lower floor's sprayed coating and upper strata sprayed coating；Dummy strain gauge sensitive grid is fixed on the sprayed coating of upper strata by two spray strips, consistent with work strain meter sensitive grid position and direction；Insulating barrier is placed on above two spray strips, and the upper surface of insulating barrier fits tightly with protective layer；Work strain meter lead-in wire, dummy strain gauge lead-in wire lay respectively at work strain meter sensitive grid, the end of dummy strain gauge sensitive grid, draw from the preformed hole of protective layer.This utility model utilizes the output of dummy strain gauge to compensate the thermal output of work strain meter, eliminates strain gauge thermal output impact, improves high temperature static strain measurement result precision and reliability；Reduce thermal output and demarcate link, make the simpler convenience of high temperature static strain measurement.
Description
Technical field
This utility model relates to high temperature strain measurement technical field, is specifically related to the high temperature of a kind of band dummy strain gauge
Static strain meter.
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, more than 300 DEG C particularly 600 DEG C
～the high temperature strain measurement field of 1000 DEG C, high temperature strain gauge is big due to its thermal output, measures doing static strain
Time must take into elimination thermal output impact.
Present many employings carry out the curve amendment method of thermal output correction after first carrying out thermal output demarcation；Strain gauge stable state
Thermal output is demarcated and can be easier to realize in resistance furnace, but the temperature that the thermal output of strain gauge is experienced with strain gauge
Heating rate is relevant, and particularly under the environment that is rapidly heated, steady state thermal output and thermal transient output exist bigger difference
Not, replace thermal transient output to carry out thermal output correction with steady state thermal output and can bring bigger error, therefore quickly
Under elevated temp, strain measurement must carry out thermal transient output demarcation；And carry out thermal transient output demarcate equipment and
Method is complicated, and the difficulty demarcating transient heat output is bigger.When actual high temperature strain measurement, it would however also be possible to employ line
Road penalty method eliminates thermal output impact, but requires when arranging dummy strain gauge that dummy strain gauge is arranged in and works and answer
Change meter has identical temperature field and does not the most experience the place of strain, is typically hard to find such pieces of cloth position.
High temperature static strain measurement is when eliminating thermal output and affecting, and the difficulty demarcating transient heat output is relatively big, arranges
It is difficult to find that during dummy strain gauge that only experiencing temperature does not experience the pieces of cloth position of strain, causes strained meter thermal output
Affect 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 high temperature static that the utility model proposes a kind of band dummy strain gauge should
Become meter.
The technical solution adopted in the utility model is as follows:
A kind of high temperature static strain gauge of band 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 goes between；Work strain meter sensitive grid, dummy strain gauge sensitive grid and insulating barrier are positioned at protective layer；
Work strain meter sensitive grid between lower floor's sprayed coating and upper strata sprayed coating, work strain meter sensitive grid upper,
Together with lower surface and lower floor sprayed coating are fully bonded to upper strata sprayed coating；Dummy strain gauge sensitive grid is placed in upper strata
On sprayed coating upper surface, consistent with work strain meter sensitive grid position and direction, solid by two spray strip bondings
It is scheduled on the sprayed coating of upper strata；Insulating barrier is placed on above two spray strips, and it is sensitive that dummy strain gauge is completely covered
Grid, the upper surface of insulating barrier fits tightly with protective layer；Work strain meter lead-in wire, dummy strain gauge lead-in wire are respectively
It is positioned at work strain meter sensitive grid, the end of dummy strain gauge sensitive grid, draws from the preformed hole of protective layer..
Further, work strain meter sensitive grid and dummy strain gauge sensitive grid use same model, same batch
The naked sensitive grid of uniaxial strain gage.
Further, lower floor's sprayed coating, upper strata sprayed coating, the thickness of spray strip are 0.03～0.3mm, spraying
The width of bar is 0.3～1.5mm.
Further, lower floor's sprayed coating 2, upper strata sprayed coating 3 and the component of spray strip 5 and the quality of each component
Percentage ratio is identical, and component is Al2O3、SiO2、Fe2O3、TiO2、NaO2, CaO and MgO, each component
Mass percent be Al2O3: 98.3, SiO2: 0.78, Fe2O3: 0.05, TiO2: 0.01, NaO2: 0.3,
CaO:0.2, MgO:0.36.
Further, insulating barrier uses asbestos pad material.
Further, protective layer uses metal alloy sheet, and thickness is 0.03～0.1mm.
The utility model has the advantage of:
1. this utility model is at the dummy strain gauge arranged above of work strain meter, the sensitivity of dummy strain gauge with
Work strain meter sensitive grid position is consistent with direction, and the sensitivity of dummy strain gauge is glued by two spray strips simultaneously
Conjunction is fixed on the sprayed coating of upper strata, makes dummy strain gauge and work strain meter have identical temperature field, makes compensation
The sensitivity of strain gauge only experiences the temperature that the sensitivity of work strain meter is experienced, and does not experience work strain
The strain that the sensitivity of meter is experienced, therefore dummy strain gauge is output as the thermal output of work strain meter, disappears
Except work strain meter thermal output affects, improve high temperature static strain measurement precision and reliability, reduce thermal output mark
Determine 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 this utility model height is gentle and quiet
State strain gauge is under the environment that is rapidly heated, it is also possible to reach the high effect with good reliability of certainty of measurement.
Accompanying drawing explanation
The structure of the high temperature static strain gauge of the band dummy strain gauge that Fig. 1 provides for this utility model one embodiment
Schematic diagram.
In figure: 1-work strain meter sensitive grid, 2-lower floor sprayed coating, 3-upper strata sprayed coating, 4-compensate should
Become meter sensitive grid, 5-spray strip, 6-insulating barrier, 7-protective layer, 8-work strain meter lead-in wire, 9-benefit
Repay strain gauge lead-in wire.
Detailed description of the invention
Below in conjunction with the accompanying drawings this utility model is described in further detail.
In the actual measurement of work strain meter, measurement is to strain value in addition to the thermal strain needed or mechanical strain, also includes
The thermal output that work strain meter temperature influence produces, thermal output is not real strain, needs to be corrected.This
Utility model, at the dummy strain gauge arranged above of work strain meter, makes dummy strain gauge be output as work strain
The thermal output of meter, eliminates work strain meter thermal output impact.
As it is shown in figure 1, the high temperature static strain of a kind of band dummy strain gauge of this utility model one embodiment offer
Meter 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.
Wherein: work strain meter sensitive grid 1, dummy strain gauge sensitive grid 4 and insulating barrier 6 are positioned at protective layer 7
In；Work strain meter sensitive grid 1 is between lower floor's sprayed coating 2 and upper strata sprayed coating 3, and work strain meter is quick
Together with the upper and lower surface of sense grid 1 and lower floor sprayed coating 2 are fully bonded to upper strata sprayed coating 3；Compensate strain
Meter 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
Face, and dummy strain gauge sensitive grid 4 is completely covered, the upper surface of insulating barrier 6 fits tightly with protective layer 7；
Work strain meter lead-in wire 8, dummy strain gauge lead-in wire 9 lay respectively at work strain meter sensitive grid 1, compensate strain
The end of meter sensitive grid 4, draws 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 use same batch type
The naked sensitive grid of the uniaxial strain gage of number HFH-12-125-ZHW, the size of uniaxial strain gage sensitive grid is
5×3mm.At the dummy strain gauge arranged above of work strain meter, the sensitivity of dummy strain gauge and work strain
Meter sensitive grid position is consistent with direction, and the sensitivity of dummy strain gauge is adhesively fixed by two spray strips simultaneously
On the sprayed coating of upper strata, make dummy strain gauge and work strain meter have identical temperature field, make dummy strain gauge
Sensitivity only experiences the temperature that the sensitivity of work strain meter is experienced, and does not experience the sensitivity of work strain meter
The strain experienced, dummy strain gauge is output as the thermal output of work strain meter.In the work that is rapidly heated
Under environment, the output of dummy strain gauge can compensate for the transient heat output of work strain meter, high temperature static strain gauge
It 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, the thickness of spray strip 5 are 0.08mm, the width of spray strip 5
For 1mm；Article two, the centrage of spray strip 5 lays respectively at the 1/3 of grid length of dummy strain gauge sensitive grid 4,2/3
Place.
Insulating barrier 6 uses asbestos pad material, plays and insulate between protective layer 7 and dummy strain gauge sensitive grid 4
With heat insulation effect.
Protective layer 7 uses 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 and the component of spray strip 5 and each component
Mass percent is identical, and component is Al2O3、SiO2、Fe2O3、TiO2、NaO2, CaO and MgO, respectively
The mass percent of 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 this utility model, and is not limitation of the utility model, relevant skill
The those of ordinary skill in art field, in the case of without departing from spirit and scope of the present utility model, it is also possible to do
Going out various change and modification, the technical scheme of the most all equivalents falls within category of the present utility model, this practicality
Novel scope of patent protection should be defined by the claims.
Claims (6)
1. the high temperature static strain gauge of a band 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) and lower floor's 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, 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) fits tightly with protective layer (7)；Work strain meter lead-in wire (8), dummy strain gauge lead-in wire (9) lay respectively at work strain meter sensitive grid (1), the end of dummy strain gauge sensitive grid (4), draw from the preformed hole of protective layer (7).
The high temperature static strain gauge of a kind of band dummy strain gauge the most as claimed in claim 1, it is characterised in that: work strain meter sensitive grid (1) and dummy strain gauge sensitive grid (4) use the naked sensitive grid of the uniaxial strain gage of same model, same batch.
The high temperature static strain gauge of a kind of band dummy strain gauge the most as claimed in claim 1 or 2, it is characterized in that: lower floor's sprayed coating (2), upper strata sprayed coating (3), the thickness of spray strip (5) are 0.03～0.3mm, and the width of spray strip (5) is 0.5～1.5mm.
The high temperature static strain gauge of a kind of band dummy strain gauge the most as claimed in claim 3, it is characterized in that: lower floor's sprayed coating (2), upper strata sprayed coating (3), the thickness of spray strip (5) are 0.03～0.3mm, and the width of spray strip (5) is 0.5～1.5mm.
5. the high temperature static strain gauge of a kind of band dummy strain gauge as described in claim 1,2 or 4, it is characterised in that: insulating barrier (6) uses asbestos pad material.
6. the high temperature static strain gauge of a kind of band dummy strain gauge as described in claim 1,2 or 4, it is characterised in that: protective layer (7) uses metal alloy sheet, and thickness is 0.03～0.1mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201521135888.6U CN205748351U (en) | 2015-12-25 | 2015-12-25 | A kind of high temperature static strain gauge of band dummy strain gauge |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201521135888.6U CN205748351U (en) | 2015-12-25 | 2015-12-25 | A kind of high temperature static strain gauge of band dummy strain gauge |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205748351U true CN205748351U (en) | 2016-11-30 |
Family
ID=57388520
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201521135888.6U Expired - Fee Related CN205748351U (en) | 2015-12-25 | 2015-12-25 | A kind of high temperature static strain gauge of band dummy strain gauge |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205748351U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105698744A (en) * | 2015-12-25 | 2016-06-22 | 中国空气动力研究与发展中心超高速空气动力研究所 | High temperature static strain gauge with compensation strain gauge |
-
2015
- 2015-12-25 CN CN201521135888.6U patent/CN205748351U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105698744A (en) * | 2015-12-25 | 2016-06-22 | 中国空气动力研究与发展中心超高速空气动力研究所 | High temperature static strain gauge with compensation strain gauge |
| CN105698744B (en) * | 2015-12-25 | 2018-05-29 | 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 with dummy strain gauge |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20161130 Termination date: 20161225 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |