CN112923845A - Pipeline four-point strain acquisition belt device - Google Patents
Pipeline four-point strain acquisition belt device Download PDFInfo
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- CN112923845A CN112923845A CN202110311280.8A CN202110311280A CN112923845A CN 112923845 A CN112923845 A CN 112923845A CN 202110311280 A CN202110311280 A CN 202110311280A CN 112923845 A CN112923845 A CN 112923845A
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- strain
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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
- 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
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- Measurement Of Length, Angles, Or The Like Using Electric Or Magnetic Means (AREA)
Abstract
The invention discloses a pipeline four-point strain acquisition belt device, which comprises: the strain acquisition device comprises a strain acquisition belt, a plurality of strain gauges and a flat cable connector; each strain gauge is connected with the strain acquisition belt, and the strain acquisition belt is connected with the flat cable connector. According to the invention, the device is directly attached to the outer wall of the pipeline, can work by matching with a traditional static strain gauge through a cable connector, and can also be matched with an integrated wireless strain acquisition module for strain acquisition. The pipeline anti-corrosion monitoring system can be widely installed beside a pipeline welding seam when a pipeline is laid, long-term monitoring can be carried out by connecting strain acquisition equipment in a pre-estimated risk area of the pipeline, the pipeline anti-corrosion monitoring system can be embedded in a pipeline anti-corrosion layer in a relatively safe area for a long time, and when the pipeline needs to carry out safety evaluation on the relatively safe area, the pipeline anti-corrosion layer can be pulled away according to a mark to connect an upper strain acquisition belt to carry out strain data acquisition.
Description
Technical Field
The invention belongs to the technical field of pipeline safety, and particularly relates to a pipeline four-point strain acquisition belt device which is applied to a strain monitoring technology during pipeline operation.
Background
Traditional pipeline strain measurement needs to install vibrating wire sensor at the pipeline outer wall, influences the laying of pipeline anticorrosive coating, and the process is loaded down with trivial details and expensive.
Therefore, it is a problem of interest for researchers to find a time-saving, labor-saving and low-cost pipeline strain monitoring device without affecting the corrosion-resistant layer of the pipeline.
Disclosure of Invention
In order to solve the technical problems, the invention provides a pipeline four-point strain acquisition belt device which is mainly used for strain monitoring during the operation of a pipeline, can be produced in batches by manufacturers, and can be directly stuck in an anticorrosive layer of the pipeline to carry out corresponding monitoring work after being tested to be qualified. The steps of manually pasting the strain gauges and welding the strain gauges and the flat cable are omitted, the four strain gauges are ensured to be on the same straight line, and the accuracy of strain monitoring is improved while the workload is reduced.
In order to achieve the above object, the present invention provides a four-point strain acquisition belt device for a pipeline, comprising: the strain acquisition device comprises a strain acquisition belt, a plurality of strain gauges and a flat cable connector;
each strain gauge is connected with the strain acquisition belt, and the strain acquisition belt is connected with the flat cable connector.
Preferably, the strain acquisition tape comprises, internally: a plurality of strain gauge preformed holes and FPC flat cables; a plurality of foil gage preformed hole equipartition arrange in strain acquisition takes, each foil gage preformed hole is connected to the FPC winding displacement, and intersect in strain acquisition takes middle part position, exposes the winding displacement connector.
Preferably, the number of the strain gauge preformed holes and the number of the strain gauges are 4, each strain gauge preformed hole is internally provided with one strain gauge, and the flat cable connector is connected with the flat cable connector.
Preferably, the strain gauge preformed holes are distributed on the strain acquisition belt in a quartering manner; the strain gauge is connected to the welding point on the preformed hole of the strain gauge in a welding mode.
Preferably, the winding displacement connector and the static strain gauge are used for measuring the four-point strain of the pipeline, or the winding displacement connector and the wireless strain acquisition module are matched for transmitting strain data.
Preferably, the pipeline four-point strain acquisition belt device measures the magnitude of strain generated by a component or structure under the action of force by adopting a strain gauge measurement method.
Preferably, the pipeline four-point strain acquisition belt device is attached to the inner wall of the anti-corrosion layer of the outer wall of the pipeline in a sticky or direct winding manner.
Compared with the prior art, the invention has the beneficial effects that:
the strain acquisition belt is directly attached to the outer wall of the pipeline, the strain acquisition belt can work in cooperation with a traditional static strain gauge through a bus bar connector, and can also be matched with a wireless strain acquisition module which is integrated well for strain acquisition, and compared with the traditional method, the strain acquisition belt is simpler to install and lower in manufacturing cost. The pipeline anti-corrosion monitoring system can be widely installed beside a pipeline welding seam when a pipeline is laid, long-term monitoring can be carried out by connecting strain acquisition equipment in a pre-estimated risk area of the pipeline, the pipeline anti-corrosion monitoring system can be embedded in a pipeline anti-corrosion layer in a relatively safe area for a long time, and when the pipeline needs to carry out safety evaluation on the relatively safe area, the pipeline anti-corrosion layer can be pulled away according to a mark to connect an upper strain acquisition belt to carry out strain data acquisition.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings without inventive exercise.
FIG. 1 is a schematic view of the apparatus of the present invention;
fig. 2 is a schematic structural diagram of a strain acquisition tape device according to the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
In order to make the aforementioned objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in further detail below.
Example 1
Referring to the right drawing of fig. 1, the whole is a side development view of a certain section of cylindrical long-distance pipeline, four monitoring points are arranged on each section of pipeline, a pipeline four-point strain acquisition belt device is attached to an anticorrosive layer on the outer wall of the pipeline in a sticking or direct winding mode, and strain monitoring is carried out on the four monitoring points.
Wherein, pipeline four-point strain acquisition belting includes: the strain acquisition device comprises a strain acquisition belt, four strain gauges and a flat cable connector;
the strain acquisition belt in turn comprises: four strain gauge preformed holes and FPC flat cables; the strain gauge preformed holes are distributed on the strain acquisition belt in a quartering mode, each strain gauge is connected to a welding point on each strain gauge preformed hole in a welding mode, and the position of each strain gauge corresponds to the position of each monitoring point in sequence. The FPC flat cable is uniformly distributed in the strain acquisition belt and used for connecting strain gauges at all positions and meeting at the middle part of the strain acquisition belt, and a flat cable connector is exposed to be directly connected with a flat cable connector; the bus bar connector and the static strain gauge are used for measuring four-point strain of the pipeline, or are matched with the wireless strain acquisition module for transmitting strain data, and finally the purpose of strain data acquisition is achieved.
Referring to the left drawing of fig. 1, the left drawing is a cross-sectional view of a cylindrical long-distance pipeline, a pipeline four-point strain acquisition belt device is attached to an anti-corrosion layer of the outer wall of the pipeline in a sticky or direct winding mode, four strain gauges on the pipeline four-point strain acquisition belt correspond to four monitoring points on the pipeline one to one, the strain acquisition can be carried out by matching a cable connector with a traditional static strain gauge and also matching an integrated wireless strain acquisition module, and compared with the traditional method, the strain acquisition device is simpler to install and lower in manufacturing cost.
Referring to fig. 2, there is shown an internal alignment chart of a strain acquisition tape of the present invention, the internal portion of the strain acquisition tape comprising: a strain gauge reserved hole and an FPC flat cable. The FPC flat cable is uniformly distributed in the strain acquisition belt and used for connecting strain gauges at all positions and intersecting at the middle part of the strain acquisition belt, and a flat cable connector is exposed. The strain gauge is connected to a welding point on the preformed hole of the strain gauge in a welding mode, and a strain gauge measuring method is adopted to measure the magnitude of the strain produced by the component or the structure under the action of force.
The strain gauge measurement method is an important measurement method for measuring the magnitude of strain generated by a component or a structure under the action of force in engineering. The measurement principle is as follows: the resistance of the wire is related to the length and cross-sectional area of the wire, in addition to the properties of the material. The wire is adhered to the member, and when the member is deformed under a force, the length and the cross-sectional area of the wire are changed along with the member, so that the resistance is changed.
dR/R＝Ks*ε
Wherein Ks is the sensitivity coefficient of the material, and the physical meaning is the resistance change rate of unit strain, which marks whether the resistance strain gage effect of the wire material is obvious or not. ε is the strain at the measurement point, a dimensionless quantity, but is still customarily given in units of microstrain, often denoted by the symbol μ ε. Therefore, the deformation of the strain gauge can be calculated by measuring the resistance of the strain gauge. During measurement, only the strain gauge needs to be pasted on the surface of an experimental object, and the installation is simple and convenient.
The invention takes a pipeline with the diameter of 290mm as an example: the length of a pipeline is 700mm, the width of the pipeline is 33mm, the length of a connector is 20mm, the mounting openings of four strain gauges are 14mm multiplied by 14mm, the distance between the wire arranging connectors is 1mm, the strain gauges are connected with a strain acquisition belt through welding and are placed in reserved hole positions; the strain acquisition belt is adhered to the inner part of the anticorrosive coating on the outer wall of the long-distance pipeline; connecting the strain acquisition belt with a cable connector; and the traditional static strain gauge or the wireless transmission module is connected through a bus bar connector to acquire strain data.
Aiming at pipelines with different diameters, strain acquisition belts with different lengths can be manufactured, and strain gauges are arranged in the strain gauge reserved holes in quartering mode.
The technical parameters of the device can be adaptively manufactured according to the diameter and the type of the pipeline.
In conclusion, the device is directly attached to the outer wall of the pipeline, can work together with the traditional static strain gauge through the cable connector, can also be used together with the integrated wireless strain acquisition module for strain acquisition, and is simpler to install and lower in manufacturing cost compared with the traditional method. The pipeline anti-corrosion monitoring system can be widely installed beside a pipeline welding seam when a pipeline is laid, long-term monitoring can be carried out by connecting strain acquisition equipment in a pre-estimated risk area of the pipeline, the pipeline anti-corrosion monitoring system can be embedded in a pipeline anti-corrosion layer in a relatively safe area for a long time, and when the pipeline needs to carry out safety evaluation on the relatively safe area, the pipeline anti-corrosion layer can be pulled away according to a mark to connect an upper strain acquisition belt to carry out strain data acquisition.
The above-described embodiments are merely illustrative of the preferred embodiments of the present invention, and do not limit the scope of the present invention, and various modifications and improvements of the technical solutions of the present invention can be made by those skilled in the art without departing from the spirit of the present invention, and the technical solutions of the present invention are within the scope of the present invention defined by the claims.
Claims (7)
1. A pipeline four-point strain acquisition belt device is characterized by comprising: the strain acquisition device comprises a strain acquisition belt, a plurality of strain gauges and a flat cable connector;
each strain gauge is connected with the strain acquisition belt, and the strain acquisition belt is connected with the flat cable connector.
2. The pipe four-point strain collection belt apparatus of claim 1, wherein the interior of the strain collection belt comprises: a plurality of strain gauge preformed holes and FPC flat cables; a plurality of foil gage preformed hole equipartition arrange in strain acquisition takes, each foil gage preformed hole is connected to the FPC winding displacement, and intersect in strain acquisition takes middle part position, exposes the winding displacement connector.
3. The four-point strain collection belt device for the pipeline as claimed in claim 2, wherein the number of the strain gauge preformed holes and the number of the strain gauges are both 4, each strain gauge preformed hole is internally provided with one strain gauge, and the flat cable connector is connected with the flat cable connector.
4. The four-point strain collection belt device for the pipeline as claimed in claim 2, wherein the strain gauge preformed holes are distributed on the strain collection belt in four equal parts; the strain gauge is connected to the welding point on the preformed hole of the strain gauge in a welding mode.
5. The pipeline four-point strain collection belt device according to claim 1, wherein the flat cable connector is used for pipeline four-point strain measurement with a static strain gauge or strain data transmission with a wireless strain collection module.
6. The pipeline four-point strain collection belt device according to claim 1, wherein the pipeline four-point strain collection belt device is used for measuring the magnitude of strain generated by a component or structure under the action of a force by adopting a strain gauge measurement method.
7. The pipeline four-point strain collection belt device according to claim 1, wherein the pipeline four-point strain collection belt device is attached to the inner corrosion-resistant layer of the outer wall of the pipeline in a sticking or direct winding manner.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110311280.8A CN112923845A (en) | 2021-03-24 | 2021-03-24 | Pipeline four-point strain acquisition belt device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110311280.8A CN112923845A (en) | 2021-03-24 | 2021-03-24 | Pipeline four-point strain acquisition belt device |
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| CN112923845A true CN112923845A (en) | 2021-06-08 |
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| CN202110311280.8A Pending CN112923845A (en) | 2021-03-24 | 2021-03-24 | Pipeline four-point strain acquisition belt device |
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Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101865649A (en) * | 2010-06-04 | 2010-10-20 | 中南大学 | Micro strain gauge for triaxial instrument strain measurement and manufacturing method thereof |
| CN102175137A (en) * | 2010-12-29 | 2011-09-07 | 西安交通大学 | Extensometer for measuring micro-deformation of component |
| CN205981520U (en) * | 2016-08-29 | 2017-02-22 | 北京建工新型建材有限责任公司 | Pump line variation of stresses testing arrangement |
| CN106595467A (en) * | 2016-12-12 | 2017-04-26 | 唐亮 | Geotechnical three-axis experiment sample radial deformation sensor and test method |
| CN106839964A (en) * | 2016-12-30 | 2017-06-13 | 北京盘天新技术有限公司 | A kind of strain-ga(u)ge transducer and its installation method |
| CN109327960A (en) * | 2018-10-19 | 2019-02-12 | 深圳市朋辉科技术有限公司 | A kind of large size FPC sensing membrane structure and its manufacture craft |
| CN109489872A (en) * | 2018-10-19 | 2019-03-19 | 深圳市朋辉科技术有限公司 | A kind of flexible sensor modular structure and its manufacture craft |
| CN110630600A (en) * | 2019-10-08 | 2019-12-31 | 西南交通大学 | Supplementary paster device of foil gage |
-
2021
- 2021-03-24 CN CN202110311280.8A patent/CN112923845A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101865649A (en) * | 2010-06-04 | 2010-10-20 | 中南大学 | Micro strain gauge for triaxial instrument strain measurement and manufacturing method thereof |
| CN102175137A (en) * | 2010-12-29 | 2011-09-07 | 西安交通大学 | Extensometer for measuring micro-deformation of component |
| CN205981520U (en) * | 2016-08-29 | 2017-02-22 | 北京建工新型建材有限责任公司 | Pump line variation of stresses testing arrangement |
| CN106595467A (en) * | 2016-12-12 | 2017-04-26 | 唐亮 | Geotechnical three-axis experiment sample radial deformation sensor and test method |
| CN106839964A (en) * | 2016-12-30 | 2017-06-13 | 北京盘天新技术有限公司 | A kind of strain-ga(u)ge transducer and its installation method |
| CN109327960A (en) * | 2018-10-19 | 2019-02-12 | 深圳市朋辉科技术有限公司 | A kind of large size FPC sensing membrane structure and its manufacture craft |
| CN109489872A (en) * | 2018-10-19 | 2019-03-19 | 深圳市朋辉科技术有限公司 | A kind of flexible sensor modular structure and its manufacture craft |
| CN110630600A (en) * | 2019-10-08 | 2019-12-31 | 西南交通大学 | Supplementary paster device of foil gage |
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