CN102539027A - Magnetic measurement stress sensor with freely opened coils - Google Patents
Magnetic measurement stress sensor with freely opened coils Download PDFInfo
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- CN102539027A CN102539027A CN2010105922110A CN201010592211A CN102539027A CN 102539027 A CN102539027 A CN 102539027A CN 2010105922110 A CN2010105922110 A CN 2010105922110A CN 201010592211 A CN201010592211 A CN 201010592211A CN 102539027 A CN102539027 A CN 102539027A
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Abstract
A magnetic measurement stress sensor with freely opened coils comprises two mutually isolated coils and a steel component to be measured. One coil is used for feeding in magnetization current and comprises a plurality of mutually insulated parallel metal leads. The magnetic measurement stress sensor is free in mounting and demounting and applicable to measurement of internal stress of ferromagnetic materials with various operation states and structural forms, and can be made into portable magnetic stress measuring instruments for measuring component stress of loaded bridges, loaded building structures, loaded high-tension line towers and loaded hoisting and transport equipment.
Description
Technical field
The invention belongs to sensor technical field, be specifically related to a kind of sensor of measuring the ferromagnetic material internal stress.
Background technology
Obtain ferromagnetic material component inside stress information through measuring magnetoconductivity, become a kind of common technology.Method commonly used is respectively with two coils of isolating each other of single piece of metal lead coiling, to one of them coil feed-in magnetization current, in another output of coil two ends and steel component internal stress associated voltage signal on steel component to be detected; Its typical scenario is like Wang M L; Chen Z L, Koontz S S, Magnetoelastic method of Stress monitoring in Steel tendons and cables.Nondestructive Evaluation of Highways; Utilities; And Pipelines. IV, Proceeding of SPIE, 2000 is said.
The sensor that adopts this method to make must be fixedly mounted on the monitored member, can not freely dismantle in the use, also can not use the stress of same other steel components of sensor monitors.
The object of the invention is to propose a kind of new technical scheme, makes sensor be suitable for the stress measurement of multiple different steel components, constitutes portable magnetic stress surveying instrument with it.
Summary of the invention
Magnetic measurement strain gauge with free folding coil is made up of two coil and tested steel components of isolating each other jointly; A coil is by the feed-in magnetization current; From another coil two ends output voltage signal relevant with stress; Be made up of the parallel plain conductor of many mutually insulateds by the coil of feed-in magnetization current, the parallel plain conductor of these mutually insulateds at one end links to each other with the plug connector of connector respectively, links to each other with the receptacle contact of connector at the other end; Each bar lead links to each other with plug, the receptacle contact of connector by this way: when the plug that links to each other with many parallel plain conductors respectively and socket plug button fashionable; Originally the parallel plain conductor of mutually insulated joins the first place successively, constitutes the coil of a series connection, and the coil of this series connection has a current output terminal and a current input terminal; The product of the coil turn that forms after connector fastens, the radical that equals parallel lead originally and the parallel lead of the multiply winding number of turns on the tested steel component.
Adopt technical scheme of the present invention; Can make the free installing/dismounting of sensor; Be suitable for measuring the steel component internal stress of multiple different structure shape; Make portable magnetic stress surveying instrument, be used to measure the inner stress of iron and steel parts under bridge, fabric structure, high voltage line iron tower, heavy-duty machinery and the power-equipment loaded-up condition.
Description of drawings
1, two magnetic stress sensor synoptic diagram that coil constitutes
2, many sensor synoptic diagram that parallel plain conductor constitutes through connector
3, the connected mode synoptic diagram of many parallel plain conductors and connector
4, many parallel plain conductors constitute the coil synoptic diagram of exporting with stress associated voltage signal through connector
Embodiment
A kind of magnetic measurement strain gauge with free folding coil; Constitute (like Fig. 1) by the coil [1] of feed-in magnetization current, the coil [2] and the tested steel component [3] of the tested steel component stress associated voltage signal of output; It is characterized in that coil [1] is made up of with plug [5] and socket [6] the plain conductor bundle [4] of the parallel mutually insulated of M bar, an end of each strip metal lead connects with the corresponding contact of plug [5] respectively in [4], and the other end connects with the corresponding contact of socket [6] respectively; Plain conductor bundle [4] is after tested steel component [3] is gone up winding N circle; Plug [5] fastens with socket [6], and the M strip metal lead in [4] is end to end successively, constitutes the coil [7] of M series connection; Coil [7] number of turn is the product of M and N; M span from 2 to 1000, N span from 1 to 500, [7] have an input end [8] and an output terminal [9] (like Fig. 2).
Plain conductor bundle [4] the one ends order of the parallel mutually insulated of M bar links to each other with M contact of plug [5], and M and N are positive integers, the other end of [4] link to each other with order of M contact mistake of socket [6] (like Fig. 3).
Coil [2] is made up of with plug [11] and socket [12] the plain conductor bundle [10] of the parallel mutually insulated of K bar; [10] end of each strip metal lead connects with the corresponding contact of plug [11] respectively in, and the other end connects with the corresponding contact of socket [12] respectively, and plain conductor bundle [10] is after tested hardware [3] is gone up winding L circle; Plug [11] fastens with socket [12]; [10] the K strip metal lead in is end to end successively, constitutes the coil [13] of K series connection, and K and L are positive integers; K span from 2 to 500, L span from 1 to 200.The number of turn of coil [13] is the product of K and L, and [13] have an input end [14] and an output terminal [15] (like Fig. 4).
Claims (5)
1. magnetic measurement strain gauge with free folding coil; Be made up of the coil [1] of feed-in magnetization current, the coil [2] and the tested steel component [3] of the tested steel component stress associated voltage signal of output, it is characterized in that coil [1] is made up of with plug [5] and plug [6] the plain conductor bundle [4] of the parallel mutually insulated of M bar, an end of each strip metal lead connects with the corresponding contact of plug [5] respectively in [4]; The other end connects with the corresponding contact of socket [6] respectively; Plain conductor bundle [4] is after tested steel component [3] is gone up winding W circle, and plug [5] fastens with plug [6], and the M strip metal lead in [4] is end to end successively; Constitute the coil [7] of M series connection; Coil [7] number of turn is the product of M and N, and M and N are positive integers, and [7] have an input end [8] and an output terminal [9].
2. the described a kind of magnetic measurement strain gauge with free folding coil of claim 1 is characterized in that M span from 2 to 1000, N span from 1 to 500.
3. the described a kind of magnetic measurement strain gauge of claim 1 with free folding coil; Plain conductor bundle [4] the one ends order that it is characterized in that the parallel mutually insulated of M bar links to each other with M contact of plug [5], and the other end of [4] links to each other with the wrong order of M contact of socket [6].
4. the described a kind of magnetic measurement strain gauge of claim 1 with free folding coil; It is characterized in that coil [2] is made up of with plug [11] and socket [12] the plain conductor bundle [10] of the parallel mutually insulated of K bar; [10] end of each strip metal lead connects with the corresponding contact of socket [11] respectively in, and the other end connects with the corresponding contact of socket [12] respectively, and plain conductor bundle [10] is after tested hardware [3] is gone up winding L circle; Plug [11] fastens with socket [12]; [10] the K bar lead in is end to end successively, constitutes the coil [13] of K series connection, and the number of turn of coil [13] is the product of K and L.[13] input end [14] and an output terminal [15] are arranged.
5. the described a kind of magnetic measurement strain gauge with free folding coil of claim 4 is characterized in that K span from 2 to 500, L span from 1 to 200.
Priority Applications (1)
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CN2010105922110A CN102539027A (en) | 2010-12-09 | 2010-12-09 | Magnetic measurement stress sensor with freely opened coils |
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CN2010105922110A CN102539027A (en) | 2010-12-09 | 2010-12-09 | Magnetic measurement stress sensor with freely opened coils |
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CN102539027A true CN102539027A (en) | 2012-07-04 |
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Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN106197765A (en) * | 2016-07-15 | 2016-12-07 | 中铁隧道集团二处有限公司 | A kind of immersed tube tunnel PC drag-line stress monitoring method and device |
CN109683114A (en) * | 2019-01-31 | 2019-04-26 | 广西大学 | A kind of assembling electromagnetic sensor measuring system |
RU198377U1 (en) * | 2020-03-02 | 2020-07-02 | Дмитрий Андреевич Поносов | An electromagnetic sensor for measuring internal stresses in a rod ferromagnetic element of a building structure |
RU199215U1 (en) * | 2020-03-02 | 2020-08-21 | Дмитрий Андреевич Поносов | Electromagnetic sensor for measuring internal stresses in a ferromagnetic rod element of a building structure |
CN113375846A (en) * | 2021-05-17 | 2021-09-10 | 西南石油大学 | Device and method for quickly detecting axial stress of pipeline |
-
2010
- 2010-12-09 CN CN2010105922110A patent/CN102539027A/en active Pending
Cited By (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN106197765A (en) * | 2016-07-15 | 2016-12-07 | 中铁隧道集团二处有限公司 | A kind of immersed tube tunnel PC drag-line stress monitoring method and device |
CN106197765B (en) * | 2016-07-15 | 2019-03-29 | 中铁隧道集团二处有限公司 | A kind of immersed tube tunnel PC drag-line stress monitoring method |
CN109683114A (en) * | 2019-01-31 | 2019-04-26 | 广西大学 | A kind of assembling electromagnetic sensor measuring system |
RU198377U1 (en) * | 2020-03-02 | 2020-07-02 | Дмитрий Андреевич Поносов | An electromagnetic sensor for measuring internal stresses in a rod ferromagnetic element of a building structure |
RU199215U1 (en) * | 2020-03-02 | 2020-08-21 | Дмитрий Андреевич Поносов | Electromagnetic sensor for measuring internal stresses in a ferromagnetic rod element of a building structure |
CN113375846A (en) * | 2021-05-17 | 2021-09-10 | 西南石油大学 | Device and method for quickly detecting axial stress of pipeline |
CN113375846B (en) * | 2021-05-17 | 2021-12-03 | 西南石油大学 | Device and method for quickly detecting axial stress of pipeline |
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Application publication date: 20120704 |