CN109373888A - It is a kind of for testing the sensor for adopting seat earth deformation extent - Google Patents
It is a kind of for testing the sensor for adopting seat earth deformation extent Download PDFInfo
- Publication number
- CN109373888A CN109373888A CN201811251285.0A CN201811251285A CN109373888A CN 109373888 A CN109373888 A CN 109373888A CN 201811251285 A CN201811251285 A CN 201811251285A CN 109373888 A CN109373888 A CN 109373888A
- Authority
- CN
- China
- Prior art keywords
- substrate
- sensor
- testing
- deformation extent
- steel pipe
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B7/00—Measuring arrangements characterised by the use of electric or magnetic techniques
- G01B7/16—Measuring arrangements characterised by the use of electric or magnetic techniques for measuring the deformation in a solid, e.g. by resistance strain gauge
- G01B7/18—Measuring arrangements characterised by the use of electric or magnetic techniques for measuring the deformation in a solid, e.g. by resistance strain gauge using change in resistance
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Measurement Of Force In General (AREA)
- Measurement Of Length, Angles, Or The Like Using Electric Or Magnetic Means (AREA)
Abstract
The invention discloses a kind of for testing the sensor for adopting seat earth deformation extent, including steel pipe skeleton, strain rosette and epoxy resin, there are four strain rosette sets altogether, 90 ° of difference is affixed on the upper and lower part of the steel pipe skeleton outer wall respectively, each strain rosette is made of two orthogonal foil gauges, foil gauge includes substrate, substrate is made of upper layer and lower layer sheet adhering, sensitive grid is equipped between upper layer and lower layer thin slice, one end of substrate is set there are two connecting terminal, connecting terminal is connect by tinned wird with sensitive grid, adhesive is provided on one outer surface of substrate, the one side of adhesive is sticked with the outer surface of substrate, another side posts oiliness gummed paper, steel pipe skeleton outer wall pours package using epoxy resin.The foil gauge that the present invention uses can prevent from pullling lead during wiring, caused by foil gauge fail, while can be able to maintain foil gauge under various harsh environments and normally effectively work, data processing is simple, the data reappearance of test and it is comparative preferably.
Description
Technical field
It is specially a kind of to adopt coal seam bottom for testing the present invention relates to the prominent safe Treatment process field of coal mine gas prevention
The sensor of plate deformation extent.
Background technique
Strain transducer used at present is the hollow inclusion of Chinese Academy of Geological Sciences's geomechanics Research Institute
Crustal stress sensor, each sensor paste 3 groups of strain rosettes, and every group of strain rosette differs 120 °, every group of strain rosette by 45 ° of difference 4
A foil gauge composition.
Find that this " sensor " has following deficiency when we carry out and adopt law of deformation and breakage depth and Tachistoscope:
1, channel leads to data processing trouble too much, and sensors with auxiliary electrode shares 14 channels, wherein have 12 service aisles,
1 ground line passage and 1 compensation channel, it is more troublesome to data processing after test, because needing to convert axial direction for channel
With radial ability it is relatively good explain test result.
2, data reproduction is not comparative high, and since angle differs 120 °, strain rosette is in centre, for sensor in bottom plate
Certain depth is not strong by the strain value reproducibility showed under action of underground in power both vertically as well as horizontally, specific aim
It is not strong.
3, former this sensor is primarily used to test crustal stress, and the depth of drilling is usually no more than 20m, and adopts
Drilling is in 40m or so needed for law of deformation and breakage depth.
4, foil gauge is pasted on component surface as sensing element, since component surface strains after member stress, answers
Become piece also makes the resistance of foil gauge change therewith deforming.But it is answered adopting seat earth deformation extent for test
Become in monitoring according to be suitable only in the past general environment (it is dry, without wash away, room temperature) under strain gauge adhesion method, be easy to appear
Foil gauge failure, and crash rate is higher, main cause has:
(1) foil gauge substrate insulation thin slice meets water or is failed by solution corrosion；
(2) foil gauge lead is causing foil gauge to fail with easily pullling in conducting wire connection procedure；
(3) external protection anti-impact brushing force ability is weak, foil gauge sensitive grid stress fracture of wire etc..
Summary of the invention
The purpose of the present invention is to provide a kind of for testing the sensor for adopting seat earth deformation extent, on solving
State the problem of proposing in background technique.
In order to solve the above technical problem, the present invention provides following technical solutions: one kind adopting seat earth for testing
The sensor of deformation extent, including steel pipe skeleton, strain rosette and epoxy resin there are four the strain rosette is arranged altogether, differ 90 °
It is affixed on the upper and lower part of the steel pipe skeleton outer wall respectively, each strain rosette is by two orthogonal foil gauge groups
At；
The foil gauge includes substrate, and the substrate is made of upper layer and lower layer sheet adhering, between upper layer and lower layer thin slice
It is provided with sensitive grid, one end of the substrate is set there are two connecting terminal, and the connecting terminal passes through tinned wird and sensitivity
Grid connect, and are provided with adhesive on an outer surface of the substrate, the one side of described adhesive is sticked with the outer surface of substrate, separately
Oiliness gummed paper is posted on one side；
The steel pipe skeleton outer wall pours package using epoxy resin.
Further, the substrate is made of one-component neutrality solidification silica gel material, can be under the conditions of -60~200 DEG C
It can long-term work.
Further, the sensitive grid is that constantan wire that diameter is 0.02~0.05mm or nickel filament are coiled into palisade system
It obtains or metal foil corrosion is made at palisade.
Further, the connecting terminal is that there are two the copper-clad plates of tin point to be convenient for for fixing sensitive grid lead for weldering
It is connect with conducting wire.
Further, described adhesive with a thickness of 0.2~0.6mm.
Further, the alite paste is made of epoxy resin AB glue.
Compared with prior art, the beneficial effects obtained by the present invention are as follows being: the foil gauge that the present invention uses can prevent
Lead is pullled during wiring, caused by foil gauge fail, while can (such as long period of soaking, tide be rushed in various harsh environments
Brush, acid rain, chloride ion corrosion etc.) under be able to maintain foil gauge and normally effectively work, in addition, foil gauge using when need to only tear
Oiliness gummed paper, is attached on testee, using comparable convenience, have quality less, it is moderate length, easy to carry, logical
The advantages that road is few, data processing is simple, the data reappearance of test and it is comparative preferably.
Detailed description of the invention
Attached drawing is used to provide further understanding of the present invention, and constitutes part of specification, with reality of the invention
It applies example to be used to explain the present invention together, not be construed as limiting the invention.In the accompanying drawings:
Fig. 1 is two strain rosette principal section position views of the invention；
Fig. 2 is the structural schematic diagram of foil gauge in the present invention；
Fig. 3 is the attachment structure schematic diagram of pedestal and adhesive in the present invention.
Attached drawing mark explanation:
Fig. 1 is clearly designated in figure by the correspondence sectional view of the invention intercepted along two A, A/ and B, B/ strain rosettes
The position of skeleton where each strain rosette and two foil gauges are mutually perpendicular to relationship, and 1,2,3,4,5,6,7 and 8 is logical for work
Road, compensation and two channels of ground wire are in side；
Fig. 2 is the structural schematic diagram of foil gauge in the present invention, and in figure, 9 be substrate, and 10 be sensitive grid, and 11 be connecting terminal；
Fig. 3 is the attachment structure schematic diagram of pedestal and adhesive in the present invention, and in figure, 9 be substrate, and 12 be adhesive, 13
For oiliness gummed paper.
Specific embodiment
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation description, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.It is based on
Embodiment in the present invention, it is obtained by those of ordinary skill in the art without making creative efforts every other
Embodiment shall fall within the protection scope of the present invention.
Fig. 1-Fig. 3 is please referred to, the present invention provides a kind of technical solution: one kind adopting seat earth deformation extent for testing
Sensor, including steel pipe skeleton, strain rosette and epoxy resin, there are four the strain rosette is arranged altogether, 90 ° of difference is affixed on respectively
The upper and lower part of the steel pipe skeleton outer wall, each strain rosette are made of two orthogonal foil gauges；It is described to answer
Becoming piece includes substrate, and the substrate is made of upper layer and lower layer sheet adhering, and base material is one-component neutrality solidification silica gel, Gu
The elastomer formed after change has excellent shockproof properties, and good insulating is ageing-resistant, water-fast, can be under the conditions of -60~200 DEG C
Long-term work；It is provided with sensitive grid between upper layer and lower layer thin slice, the constantan wire or nickel filament for being 0.02~0.05mm by diameter
Palisade or metal foil corrosion are coiled into palisade；One end of the substrate is set there are two connecting terminal, and the connecting terminal passes through
Tinned wird is connect with sensitive grid, and connecting terminal 3 is that there are two the copper-clad plates of tin point to be convenient for for fixing 2 lead of sensitive grid for weldering
It is connect with conducting wire, preventing wiring from pullling lead in the process causes foil gauge to fail；It is provided on one outer surface of the substrate viscous
Mixture, the one side of described adhesive are sticked with the outer surface of substrate, and another side posts oiliness gummed paper, prevent adhesive dries and oil
Property gummed paper is easy to tear, adhesive with a thickness of 0.2mm；The steel pipe skeleton outer wall pours package using epoxy resin.
Preferably, alite paste is made of epoxy resin AB glue, curing rate is fast, adhesive strength height, cooperative transformation performance
It is good；Acid and alkali-resistance, moistureproof and waterproof have good insulation, measuring body physical characteristic.
The sensitive grid in its substrate passes through solidification binding material (epoxide resin AB to the foil gauge in the actual operation process
Glue) it pastes, and can be with curing materials cooperative transformation in variation of ambient temperature.Since foil gauge lead is effectively fixed, in water
The insulation resistance being always kept in a fixed state under stream impact, wind load and the effect of other external loads, it is not vulnerable.
Working principle: first processing steel pipe skeleton, then internal diameter 28mm, outer diameter 34mm highly polish for 150mm
Outer wall of steel pipe, and strain rosette is pasted with 502 glue again after being scrubbed with alcohol, 4 strain rosettes press size design position respectively
It is adhered closely on the outer wall of hollow steel pipe skeleton, along the foil gauge center of steel pipe skeleton axial direction top two strain rosettes of A, A/
Apart from top 30mm, the foil gauge centre distance bottom 30mm of two strain rosettes of lower part B, B/；It is outer again after the glue solidifies to pour thickness
Degree is the epoxy resin of 2mm, and sensor is cylindrical after finally forming, and outer diameter 38mm, internal diameter is still 28mm.
As stated above, the foil gauge that the present invention uses can prevent from pullling lead during wiring, caused by strain
Piece failure, while can be able to maintain under various harsh environments (such as long period of soaking, tidal scour, acid rain, chloride ion corrosion)
Foil gauge normally effectively works, in addition, foil gauge using when need to only tear oiliness gummed paper, be attached on testee, make
With comparable convenience, have many advantages, such as that quality is little, moderate length, easy to carry, channel is few, data processing is simple, test
Data reappearance and it is comparative preferably.
Finally, it should be noted that the foregoing is only a preferred embodiment of the present invention, it is not intended to restrict the invention,
Although the present invention is described in detail referring to the foregoing embodiments, for those skilled in the art, still may be used
To modify the technical solutions described in the foregoing embodiments or equivalent replacement of some of the technical features.
All within the spirits and principles of the present invention, any modification, equivalent replacement, improvement and so on should be included in of the invention
Within protection scope.
Claims (6)
1. a kind of for testing the sensor for adopting seat earth deformation extent, it is characterised in that: including steel pipe skeleton, strain rosette
And epoxy resin, there are four the strain rosette is arranged altogether, 90 ° of difference be affixed on respectively the steel pipe skeleton outer wall top and under
Portion, each strain rosette are made of two orthogonal foil gauges；
The foil gauge includes substrate, and the substrate is made of upper layer and lower layer sheet adhering, is arranged between upper layer and lower layer thin slice
There is sensitive grid, one end of the substrate is set there are two connecting terminal, and the connecting terminal is connected by tinned wird and sensitive grid
It connects, adhesive is provided on an outer surface of the substrate, the one side of described adhesive is sticked with the outer surface of substrate, another side
Post oiliness gummed paper；
The steel pipe skeleton outer wall pours package using epoxy resin.
2. according to claim 1 a kind of for testing the sensor for adopting seat earth deformation extent, it is characterised in that:
The substrate is made of one-component neutrality solidification silica gel material, can energy long-term work under the conditions of -60~200 DEG C.
3. according to claim 1 a kind of for testing the sensor for adopting seat earth deformation extent, it is characterised in that:
The sensitive grid is the constantan wire that diameter is 0.02~0.05mm or nickel filament be coiled into palisade be made or metal foil corrosion at
Palisade is made.
4. according to claim 1 a kind of for testing the sensor for adopting seat earth deformation extent, it is characterised in that:
The connecting terminal is that there are two the copper-clad plates of tin point for weldering, for fixing sensitive grid lead, convenient for connecting with conducting wire.
5. according to claim 1 a kind of for testing the sensor for adopting seat earth deformation extent, it is characterised in that:
Described adhesive with a thickness of 0.2~0.6mm.
6. according to claim 1 a kind of for testing the sensor for adopting seat earth deformation extent, it is characterised in that:
The alite paste is made of epoxy resin AB glue.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811251285.0A CN109373888A (en) | 2018-10-25 | 2018-10-25 | It is a kind of for testing the sensor for adopting seat earth deformation extent |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811251285.0A CN109373888A (en) | 2018-10-25 | 2018-10-25 | It is a kind of for testing the sensor for adopting seat earth deformation extent |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109373888A true CN109373888A (en) | 2019-02-22 |
Family
ID=65402074
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811251285.0A Pending CN109373888A (en) | 2018-10-25 | 2018-10-25 | It is a kind of for testing the sensor for adopting seat earth deformation extent |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109373888A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111780661A (en) * | 2020-07-22 | 2020-10-16 | 华中科技大学 | Method and system for accurately measuring bending strain of flexible electronic device |
| CN109883315B (en) * | 2019-03-22 | 2021-01-01 | 中国科学院力学研究所 | Double-sided resistance type strain sensor and strain measurement method |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202734753U (en) * | 2012-02-07 | 2013-02-13 | 朱术云 | Sensor for testing deformation degree of mined coal seam floor |
| CN104374313A (en) * | 2014-11-26 | 2015-02-25 | 安徽省交通规划设计研究总院股份有限公司 | Resistance strain gauge under harsh environment |
-
2018
- 2018-10-25 CN CN201811251285.0A patent/CN109373888A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202734753U (en) * | 2012-02-07 | 2013-02-13 | 朱术云 | Sensor for testing deformation degree of mined coal seam floor |
| CN104374313A (en) * | 2014-11-26 | 2015-02-25 | 安徽省交通规划设计研究总院股份有限公司 | Resistance strain gauge under harsh environment |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109883315B (en) * | 2019-03-22 | 2021-01-01 | 中国科学院力学研究所 | Double-sided resistance type strain sensor and strain measurement method |
| CN111780661A (en) * | 2020-07-22 | 2020-10-16 | 华中科技大学 | Method and system for accurately measuring bending strain of flexible electronic device |
| CN111780661B (en) * | 2020-07-22 | 2021-10-08 | 华中科技大学 | Method and system for accurately measuring bending strain of flexible electronic device |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN109373888A (en) | It is a kind of for testing the sensor for adopting seat earth deformation extent | |
| CN104374313A (en) | Resistance strain gauge under harsh environment | |
| CN101603865A (en) | Attached type force-measuring sensor | |
| CN111337178A (en) | Polymer strain gauge sensor and intelligent cable manufacturing method | |
| CN102095364A (en) | Plane sensor used for detecting strain between asphalt road surfaces | |
| CN200993573Y (en) | Device for measuring highway surface structural strain | |
| CN207163623U (en) | A kind of PVDF piezoelectric membranes Impact monitoring sensor | |
| CN203133110U (en) | Resistance strain type acceleration sensor | |
| CN201697604U (en) | Integrated strain gauge for concrete | |
| CN212030796U (en) | PVDF sensor for monitoring explosive load | |
| CN210031753U (en) | Novel multifunctional digital probe | |
| CN205489402U (en) | Stake of environmental protection cable | |
| CN206479264U (en) | A kind of liquid capsule pressure cushion system tested for contact | |
| CN208488195U (en) | It is a kind of can repeat impact stress monitoring sensor | |
| CN209264006U (en) | A kind of embedded-type sensor monitored for highway health monitoring and traffic dynamic | |
| CN211668580U (en) | Precession vortex type gas flow piezoelectric sensor | |
| CN201972686U (en) | Novel soundproofing device for sound wave logging instrument | |
| CN203551177U (en) | Micro-gap interlayer photonic crystal fiber pressure sensor in pre-tightening composite structure | |
| CN206710225U (en) | Suitable for the spring leaf normal deformation meter of rock shearing | |
| CN208635813U (en) | A kind of aggregate flush type piezoelectric transducer | |
| CN108955963A (en) | It is a kind of can repeat impact stress monitoring sensor | |
| CN209838395U (en) | Mounting structure of electromagnetic wave resistivity instrument | |
| CN103471761B (en) | Micro-gap interlayer photonic crystal fiber pressure sensor in pre-tightening combined structure | |
| CN202734753U (en) | Sensor for testing deformation degree of mined coal seam floor | |
| CN205373929U (en) | Resistance strain pressure sensor |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20190222 |
|
| RJ01 | Rejection of invention patent application after publication |