CN205175574U - Cable intermediate head conductor temperature measures structure - Google Patents
Cable intermediate head conductor temperature measures structure Download PDFInfo
- Publication number
- CN205175574U CN205175574U CN201521019237.0U CN201521019237U CN205175574U CN 205175574 U CN205175574 U CN 205175574U CN 201521019237 U CN201521019237 U CN 201521019237U CN 205175574 U CN205175574 U CN 205175574U
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- Prior art keywords
- cable
- conductor
- intermediate joint
- cable intermediate
- prefabricated component
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Abstract
The utility model provides a cable intermediate head conductor temperature measures structure, including optical demodulation, transmission cable and fiber grating temperature sensor, in cable intermediate head's manufacturing process, install the inside at cable intermediate head with fiber grating temperature sensor, fiber grating temperature sensor is used for measuring the interior cable conductor's of cable intermediate head temperature, in the one end of transmission cable stretches into cable intermediate head, be connected with fiber grating temperature sensor, the other end of transmission cable is connected with optical demodulation. The inside at cable intermediate head is fixed with fiber grating temperature sensor to this application when cable intermediate head engineering construction installation for the monitoring cable intermediate head cable conductor's of department temperature, thus constitute cable intermediate head conductor temperature measures structure, the simple easy to carry out of overall structure.
Description
Technical field
The utility model relates to temperature of cable junction monitoring field, particularly relates to a kind of cable intermediate joint conductor temperature and measures structure.
Background technology
At present, there is duty and not easily detect and monitor, be subject to the problem such as landform and environmental restraint in cable splice (particularly high-voltage cable joint), therefore cable splice operation there will be insulation ag(e)ing phenomenon for many years afterwards, need change or recovery cable joint.In addition, literature research a large amount of both at home and abroad and cable fault show: cable splice heating, quality of insulation deterioration are the main causes causing cable fault, and therefore, cable splice conductor temperature is the key parameter that cable splice duty detects and monitors.
Traditional cable splice conductor temperature monitoring equipment has thermal infrared imager, DTS distributed temperature measuring system etc., and wherein, DTS distributed temperature measuring system is current widely used one.DTS distributed temperature measuring system is surface multimode sensor fibre being wrapped in cable splice, adopts the surface temperature of optical fiber distributed type temp measuring system monitoring cable joint, then applied mathematical model derivation calculates cable splice conductor temperature.But, due to the problem of the impact and himself measuring accuracy that can be subject to change of external conditions in practical application, so, calculate that the conductor temperature of cable splice exists comparatively big error by the surface temperature of the cable splice monitored; Meanwhile, what DTS distributed temperature measuring system characterized is the medial temperature of a segment distance (at least more than 1m), and therefore, the measuring error for cable splice conductor temperature is more obvious.
For above-mentioned defect, application publication number is that the Chinese invention patent application instructions of CN104977097A discloses a kind of optical fiber measurement high pressure, the method of extra-high-tension cable connector temperature, comprise outside temperature-measuring optical fiber and inner temperature-measuring optical fiber, temperature probe stationary fixture and temperature demodulation instrument, described external fiber comprises the ST fibre-optical splice connected successively, external fiber and connector, described inner temperature-measuring optical fiber comprises the switching inserts connected successively, internal optical fiber and temperature probe, temperature probe is fixed on plug inserts by screw by described temperature probe stationary fixture, inner temperature-measuring optical fiber is connected with external fiber connector by switching inserts, external fiber is connected with the optical fiber interface of temperature demodulation instrument by ST fibre-optical splice, realize the real time on-line monitoring of the working temperature of cable splice.Temperature probe is embedded in the inside of cable splice and the focus of direct cable joint by it, thus the working temperature of accurate response cable splice inner wire.But, cable splice disclosed in this instructions is the tag 300 for connecting power cable 100 and terminal device 200, as shown in Figure 1, its summary of the invention is mainly reflected in: when cable termination manufactures, optical fiber is cast in power cable terminal joint, therefore cable intermediate joint 400 used when structure disclosed in it is not suitable for connection two urban electric power cables 100; In addition, inner temperature-measuring optical fiber is embedded in cable splice by the mode of cast by it, and this mode is more difficult realization in Practical Project.
Utility model content
The shortcoming of prior art in view of the above, the purpose of this utility model is to provide a kind of easy to implement and the cable intermediate joint conductor temperature being applicable to monitoring cable intermediate head conductor temperature measures structure.
For achieving the above object, the utility model provides a kind of cable intermediate joint conductor temperature to measure structure, comprise optical fibre interrogation instrument, transmission cable and fiber-optical grating temperature sensor, in the cable joint manufacturing process in, fiber-optical grating temperature sensor is arranged on the inside of cable intermediate joint; Described fiber-optical grating temperature sensor is for measuring the temperature of cable intermediate joint inner cable conductor, stretch in cable intermediate joint, be connected with fiber-optical grating temperature sensor in one end of described transmission cable, the other end of transmission cable is connected with optical fibre interrogation instrument.
Further, described cable intermediate joint comprises two cables, crimping copper pipe and rubber prefabricated component, the end of every root cable is provided with connector portions, described connector portions comprises insulation shield layer, the cable insulation exposed from insulation shield layer, and the cable conductor exposed from cable insulation, the cable conductor of two cables stretches into crimping copper pipe from the two ends of crimping copper pipe respectively, and with crimp copper pipe and be fixedly connected with, two cables stretch into rubber prefabricated component from the two ends of rubber prefabricated component respectively, and insulation shield layer is fixedly connected with rubber prefabricated component, the outer peripheral face of described crimping copper pipe is wound with wrapped semi-conductive tape, and described fiber-optical grating temperature sensor is fixed on the outer peripheral face of wrapped semi-conductive tape, and described transmission cable is fixed between insulation shield layer and rubber prefabricated component.
Preferably, described cable and rubber prefabricated component are for being tightly fixed.
Preferably, described cable conductor with crimp copper pipe for being tightly fixed.
Further, transmission cable in rubber prefabricated component is stretched into along insulation shield layer with cable insulation is straight lays.
As mentioned above, the cable intermediate joint conductor temperature that the utility model relates to measures structure, has following beneficial effect:
The application in the cable between joint engineering construction install time, fiber-optical grating temperature sensor is fixed on the inside of cable intermediate joint, for the temperature of monitoring cable intermediate head place cable conductor, thus form cable intermediate joint conductor temperature measurement structure, one-piece construction is simply easy to implement.
Accompanying drawing explanation
Fig. 1 is the wiring diagram of cable power transmission in prior art.
Fig. 2 is the structural representation of the application.
Element numbers explanation
1 cable
11 insulation shield layers
12 cable insulations
13 cable conductors
2 crimping copper pipes
3 optical fibre interrogation instrument
4 transmission cables
5 fiber-optical grating temperature sensors
6 rubber prefabricated components
7 wrapped semi-conductive tapes
Embodiment
By particular specific embodiment, embodiment of the present utility model is described below, person skilled in the art scholar the content disclosed by this instructions can understand other advantages of the present utility model and effect easily.
Notice, structure, ratio, size etc. that this instructions institute accompanying drawings illustrates, content all only in order to coordinate instructions to disclose, understand for person skilled in the art scholar and read, and be not used to limit the enforceable qualifications of the utility model, therefore the not technical essential meaning of tool, the adjustment of the modification of any structure, the change of proportionate relationship or size, do not affecting under effect that the utility model can produce and the object that can reach, still all should drop on technology contents that the utility model discloses and obtain in the scope that can contain.Simultaneously, quote in this instructions as " on ", D score, "left", "right", " centre " and " one " etc. term, also only for ease of understanding of describing, and be not used to limit the enforceable scope of the utility model, the change of its relativeness or adjustment, under changing technology contents without essence, when being also considered as the enforceable category of the utility model.
The application provides a kind of cable intermediate joint conductor temperature to measure structure, in long term monitoring cable 1 transmission line of electricity, the temperature of cable intermediate joint place cable conductor 13 that is connected of two cables 1.As shown in Figure 2, cable intermediate joint comprises two cables 1 to be connected, crimping copper pipe 2 and rubber prefabricated component 6, the end of the cable 1 that every root is to be connected is all provided with connector portions, described connector portions comprises insulation shield layer 11, the cable insulation 12 exposed from insulation shield layer 11, and the cable conductor 13 exposed from cable insulation 12, the cable conductor 13 of two cables 1 stretches into crimping copper pipe 2 from the two ends, left and right of crimping copper pipe 2 respectively, and with crimp copper pipe 2 and be tightly fixed, thus realize the connection of the connector portions of two cables 1, and be electric conducting state between the cable conductor 13 of two cables 1.The outer peripheral face of described crimping copper pipe 2 is wound with wrapped semi-conductive tape 7, described rubber prefabricated component 6 cylindrically, two cables 1 stretch into from the two ends of rubber prefabricated component 6 rubber prefabricated component 6 respectively and insulation shield layer 11 and rubber prefabricated component 6 are tightly fixed, thus realize being fixedly connected with of cable 1 and rubber prefabricated component 6.Preferably, described insulation shield layer 11 is semi-conductive layer, good with the exterior surface of cable insulation 12, thus can avoid because cable insulation 12 surface occurs the defects such as crackle and cause, between insulation shield layer 11 and protective metal shell, partial discharge phenomenon occurs.In addition, when making cable intermediate joint, insulation shield layer 11 is peeled off one section, cable insulation 12 is made to expose one section from insulation shield layer 11, to ensure enough insulation distances, bear the working voltage of transmission line of electricity, prevent the shelf depreciation even appearance of punch-through.Described wrapped semi-conductive tape 7 is equipotential with the metal level in rubber prefabricated component 6, thus can prevent the generation of partial discharge phenomenon.
Further, described cable intermediate joint conductor temperature is measured structure and is comprised optical fibre interrogation instrument 3, transmission cable 4 and fiber-optical grating temperature sensor 5, described fiber-optical grating temperature sensor 5 is pasted onto on the outer peripheral face of wrapped semi-conductive tape 7 by glue, or be wound around in the process of wrapped semi-conductive tape 7 on the outside surface of crimping copper pipe 2, fiber-optical grating temperature sensor 5 is placed on wrapped semi-conductive tape 7 and coated by wrapped semi-conductive tape 7, thus realizes the fixing of fiber-optical grating temperature sensor; One end of described transmission cable 4 is to penetrate between insulation shield layer 11 with rubber prefabricated component 6 rubber prefabricated component 6 and to be connected with fiber-optical grating temperature sensor 5, and the other end of transmission cable 4 is connected with described optical fibre interrogation instrument 3.Because cable 1 and rubber prefabricated component 6 are for being tightly fixed, therefore by transmission cable 4 from after passing between the insulation shield layer 11 and rubber prefabricated component 6 of cable 1, also be just correspondingly fixed between insulation shield layer 11 and rubber prefabricated component 6, therefore without the need to using extra securing member or fixed sturcture to fix transmission cable 4 and cable intermediate joint, thus simplify structure, be convenient to install.
Above-mentioned cable intermediate joint conductor temperature is measured in structure, and crimping copper pipe 2 has following three effects: the cable conductor 13 1, being fixedly connected with two cables 1; 2, the cable conductor 13 of conducting two cables 1, if the ends contact of cable conductor 13 is bad, but owing to crimping the electric action of copper pipe 2 self, still can ensure that the cable conductor 13 of two cables 1 is in the state of conducting all the time, and then ensure that whole transmission line of electricity stably runs; 3, the effect of heat conduction, the material of crimping copper pipe 2 is copper, and copper has good thermal conductivity, the heating temp of cable conductor 13 can be passed to fiber-optical grating temperature sensor 5 exactly, ensures the accurate measurements to cable conductor 13 temperature.The temperature of cable conductor 13 passes to crimping copper pipe 2 and exactly by fiber-optical grating temperature sensor 5 perception, light signal temperature of reaction changed by the optical fiber in transmission cable 4 is drawn, pass through optical fibre interrogation instrument 3 again by temperature signal demodulation, thus obtain cable conductor 13 temperature in the cable intermediate joint of degree of precision.
Further, the application in the cable between joint construction and installation time, fiber-optical grating temperature sensor 5 is placed and is fixed on the inside of cable intermediate joint, with the temperature of monitor cable intermediate joint place cable conductor 13, it greatly reduces the impact of outside environmental elements on cable conductor 13 temperature detection, and adopt fiber-optical grating temperature sensor 5 as temperature measuring probe, therefore error is very little, accuracy of detection is very high, thus the accurate measurements achieved cable intermediate joint inner cable conductor 13 temperature, for the detection of cable intermediate joint duty and monitoring provide strong and the Data support of comparatively precision, thus prevent the generation of mishap.In addition, fiber-optical grating temperature sensor 5 is adopted to make temperature measurement structure also have test site without the need to advantages such as power supply, strong interference immunity, long service life, and the cable intermediate joint conductor temperature measurement structure one-piece construction that the application relates to is simple, it does not need temperature-measuring optical fiber to be embedded in cable 1 plug by the mode of cast, only need inside fiber-optical grating temperature sensor 5 being fixed on rubber prefabricated component 6, lay straight for transmission cable 4, therefore total is easy to implement.
Further, after the external stability of joint puts rubber prefabricated component 6 between in the cable, then the inner space of rubber prefabricated component 6 is very limited, therefore penetrate that transmission cable 4 in rubber prefabricated component 6 is easily bending and bending radius is very little, thus cause that fibre loss in transmission cable 4 is large, frangibility, and then affect temperature detection and the monitoring of cable conductor 13.Therefore, as shown in Figure 2, when laying transmission cable 4, make to stretch into transmission cable 4 in rubber prefabricated component 6 along insulation shield layer 11 with cable insulation 12 is straight lays, eliminate the small-bend radius of transmission cable 4 in rubber prefabricated component 6 inside, so greatly reduce transmission cable 4 optical fiber loss and also prevent disconnected fine phenomenon.
The construction procedure that above-mentioned cable intermediate joint conductor temperature measures structure is as follows:
1, crimping copper pipe 2 is laid on the surface of cable conductor 13, at the wrapped semi-conductive tape 7 of surface wrap of crimping copper pipe 2;
2, fiber-optical grating temperature sensor 5 is fixed on wrapped semi-conductive tape 7;
3, transmission cable 4 is connected with fiber-optical grating temperature sensor 5, and transmission cable 4 lays along the outside surface of cable insulation 12 and insulation shield layer 11 is straight;
4, rubber prefabricated component 6 is installed, to fix transmission cable 4 and two cables 1;
5, transmission cable 4 is connected with optical fibre interrogation instrument 3.
Its one-piece construction is simple, easy to implement, detect and monitoring effect good, be applicable to very much promoting widely.
In sum, the utility model effectively overcomes various shortcoming of the prior art and tool high industrial utilization.
Above-described embodiment is illustrative principle of the present utility model and effect thereof only, but not for limiting the utility model.Any person skilled in the art scholar all without prejudice under spirit of the present utility model and category, can modify above-described embodiment or changes.Therefore, such as have in art and usually know that the knowledgeable modifies or changes not departing from all equivalences completed under the spirit and technological thought that the utility model discloses, must be contained by claim of the present utility model.
Claims (5)
1. a cable intermediate joint conductor temperature measures structure, it is characterized in that: comprise optical fibre interrogation instrument (3), transmission cable (4) and fiber-optical grating temperature sensor (5), in the cable joint manufacturing process in, fiber-optical grating temperature sensor (5) is arranged on the inside of cable intermediate joint; Described fiber-optical grating temperature sensor (5) is for measuring the temperature of cable intermediate joint inner cable conductor (13), stretch in cable intermediate joint, be connected with fiber-optical grating temperature sensor (5) in one end of described transmission cable (4), the other end of transmission cable (4) is connected with optical fibre interrogation instrument (3).
2. cable intermediate joint conductor temperature according to claim 1 measures structure, it is characterized in that: described cable intermediate joint comprises two cables (1), crimping copper pipe (2) and rubber prefabricated component (6), the end of every root cable (1) is provided with connector portions, described connector portions comprises insulation shield layer (11), the cable insulation (12) exposed from insulation shield layer (11), and the cable conductor (13) exposed from cable insulation (12), the cable conductor (13) of two cables (1) stretches into crimping copper pipe (2) from the two ends of crimping copper pipe (2) respectively, and with crimp copper pipe (2) and be fixedly connected with, two cables (1) are stretched into rubber prefabricated component (6) from the two ends of rubber prefabricated component (6) respectively, and insulation shield layer (11) is fixedly connected with rubber prefabricated component (6), the outer peripheral face of described crimping copper pipe (2) is wound with wrapped semi-conductive tape (7), described fiber-optical grating temperature sensor (5) is fixed on wrapped semi-conductive tape (7), and described transmission cable (4) is fixed between insulation shield layer (11) and rubber prefabricated component (6).
3. cable intermediate joint conductor temperature according to claim 2 measures structure, it is characterized in that: described cable (1) and rubber prefabricated component (6) are for being tightly fixed.
4. cable intermediate joint conductor temperature according to claim 2 measures structure, it is characterized in that: described cable conductor (13) with crimp copper pipe (2) for being tightly fixed.
5. cable intermediate joint conductor temperature according to claim 2 measures structure, it is characterized in that: stretch into transmission cable (4) in rubber prefabricated component (6) along insulation shield layer (11) with cable insulation (12) is straight lays.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201521019237.0U CN205175574U (en) | 2015-12-09 | 2015-12-09 | Cable intermediate head conductor temperature measures structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201521019237.0U CN205175574U (en) | 2015-12-09 | 2015-12-09 | Cable intermediate head conductor temperature measures structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205175574U true CN205175574U (en) | 2016-04-20 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201521019237.0U Withdrawn - After Issue CN205175574U (en) | 2015-12-09 | 2015-12-09 | Cable intermediate head conductor temperature measures structure |
Country Status (1)
| Country | Link |
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| CN (1) | CN205175574U (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106124086A (en) * | 2016-08-15 | 2016-11-16 | 保定合力达电缆附件有限公司 | A kind of high tension cable silastic terminal temperature measuring equipment |
| CN106168511A (en) * | 2016-08-27 | 2016-11-30 | 保定合力达电缆附件有限公司 | A kind of high tension cable connect-disconnect plug with temp sensing function |
| CN106855443A (en) * | 2015-12-09 | 2017-06-16 | 上海电缆研究所有限公司 | Cable intermediate joint conductor temperature measurement structure |
| US20210344184A1 (en) * | 2018-09-10 | 2021-11-04 | 3M Innovative Properties Company | Support structure for cable and cable accessory condition monitoring devices |
| US11567146B2 (en) | 2018-09-10 | 2023-01-31 | 3M Innovative Properties Company | Electrical power cable monitoring device using low side electrode and earth ground separation |
| US11604218B2 (en) | 2018-09-10 | 2023-03-14 | 3M Innovative Properties Company | Electrical power cable monitoring device including partial discharge sensor |
-
2015
- 2015-12-09 CN CN201521019237.0U patent/CN205175574U/en not_active Withdrawn - After Issue
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106855443A (en) * | 2015-12-09 | 2017-06-16 | 上海电缆研究所有限公司 | Cable intermediate joint conductor temperature measurement structure |
| CN106855443B (en) * | 2015-12-09 | 2019-12-24 | 上海电缆研究所有限公司 | Cable intermediate head conductor temperature measurement structure |
| CN106124086A (en) * | 2016-08-15 | 2016-11-16 | 保定合力达电缆附件有限公司 | A kind of high tension cable silastic terminal temperature measuring equipment |
| CN106124086B (en) * | 2016-08-15 | 2020-03-10 | 保定合力达电缆附件有限公司 | High tension cable silicon rubber terminal temperature measuring device |
| CN106168511A (en) * | 2016-08-27 | 2016-11-30 | 保定合力达电缆附件有限公司 | A kind of high tension cable connect-disconnect plug with temp sensing function |
| US20210344184A1 (en) * | 2018-09-10 | 2021-11-04 | 3M Innovative Properties Company | Support structure for cable and cable accessory condition monitoring devices |
| US11567146B2 (en) | 2018-09-10 | 2023-01-31 | 3M Innovative Properties Company | Electrical power cable monitoring device using low side electrode and earth ground separation |
| US11604218B2 (en) | 2018-09-10 | 2023-03-14 | 3M Innovative Properties Company | Electrical power cable monitoring device including partial discharge sensor |
| US11670930B2 (en) * | 2018-09-10 | 2023-06-06 | 3M Innovative Properties Company | Support structure for cable and cable accessory condition monitoring devices |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 200093 No. 1000, military road, Shanghai, Yangpu District Co-patentee after: Saikeli. Optical Cable Co., Ltd., Shanghai Patentee after: Shanghai Cable Research Institute Co., Ltd. Address before: 200093 No. 1000, military road, Shanghai, Yangpu District Co-patentee before: Saikeli. Optical Cable Co., Ltd., Shanghai Patentee before: Shanghai Cable Research Institute |
|
| CP01 | Change in the name or title of a patent holder | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20160420 Effective date of abandoning: 20191224 |
|
| AV01 | Patent right actively abandoned |
Granted publication date: 20160420 Effective date of abandoning: 20191224 |
|
| AV01 | Patent right actively abandoned | ||
| AV01 | Patent right actively abandoned |