CN106124086B - High tension cable silicon rubber terminal temperature measuring device - Google Patents

High tension cable silicon rubber terminal temperature measuring device Download PDF

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Publication number
CN106124086B
CN106124086B CN201610668975.0A CN201610668975A CN106124086B CN 106124086 B CN106124086 B CN 106124086B CN 201610668975 A CN201610668975 A CN 201610668975A CN 106124086 B CN106124086 B CN 106124086B
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CN
China
Prior art keywords
optical fiber
terminal
temperature
silicon rubber
temperature sensor
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Application number
CN201610668975.0A
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Chinese (zh)
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CN106124086A (en
Inventor
史宏杰
袁利军
王俊鹏
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
BAODING HELIDA CABLE ACCESSORIES Co Ltd
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BAODING HELIDA CABLE ACCESSORIES Co Ltd
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Priority to CN201610668975.0A priority Critical patent/CN106124086B/en
Publication of CN106124086A publication Critical patent/CN106124086A/en
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    • GPHYSICS
    • G01MEASURING; TESTING
    • G01KMEASURING TEMPERATURE; MEASURING QUANTITY OF HEAT; THERMALLY-SENSITIVE ELEMENTS NOT OTHERWISE PROVIDED FOR
    • G01K11/00Measuring temperature based upon physical or chemical changes not covered by groups G01K3/00, G01K5/00, G01K7/00 or G01K9/00
    • G01K11/32Measuring temperature based upon physical or chemical changes not covered by groups G01K3/00, G01K5/00, G01K7/00 or G01K9/00 using changes in transmittance, scattering or luminescence in optical fibres
    • GPHYSICS
    • G08SIGNALLING
    • G08CTRANSMISSION SYSTEMS FOR MEASURED VALUES, CONTROL OR SIMILAR SIGNALS
    • G08C17/00Arrangements for transmitting signals characterised by the use of a wireless electrical link
    • G08C17/02Arrangements for transmitting signals characterised by the use of a wireless electrical link using a radio link
    • HELECTRICITY
    • H02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02GINSTALLATION OF ELECTRIC CABLES OR LINES, OR OF COMBINED OPTICAL AND ELECTRIC CABLES OR LINES
    • H02G15/00Cable fittings
    • H02G15/02Cable terminations

Abstract

The utility model provides a high tension cable silicon rubber terminal temperature measuring device, includes optic fibre temperature sensor, CPU and wireless communication module, optic fibre temperature sensor includes fiber probe, temperature measurement optic fibre and photoelectric conversion module, fiber probe fixes the high tension cable at high tension cable silicon rubber terminal and binding post's junction, temperature measurement optic fibre one end links to each other with fiber probe, and the other end passes behind the through-hole of each full skirt root of high tension cable outside in proper order and is connected with photoelectric conversion module, photoelectric conversion module passes through the serial ports and links to each other with CPU, wireless communication module connects on CPU's serial ports and passes through radio signal and monitoring center exchange information. The invention uses the optical fiber temperature sensor to directly measure the working temperature of the wiring terminal, thereby greatly improving the temperature measurement precision; meanwhile, the optical fiber penetrates through the root of the umbrella skirt and is arranged along the cable, so that the problem of stability of the optical fiber is solved, and the insulation performance of the terminal is not influenced, so that the safe operation of the high-voltage cable silicon rubber terminal is ensured.

Description

High tension cable silicon rubber terminal temperature measuring device
Technical Field
The invention relates to a device for monitoring the working temperature of a high-voltage cable silicon rubber terminal in real time, belonging to the technical field of cables.
Background
The cable terminal integrates the functions of water prevention, stress control, shielding, insulation and the like, has good electrical performance and mechanical performance, can be used for a long time under various severe environmental conditions, has the advantages of light weight, convenience in installation and the like, and is widely applied to the fields of electric power, petrochemical industry, metallurgy, railway ports, buildings and the like. For the high-voltage cable silicon rubber terminal, if the connection between the wiring terminal and the high-voltage cable is reliable and the terminal is normally screwed, the temperature of the terminal is basically normal under the working state of high current and abnormal temperature rise is avoided. However, when the connection of the terminal is loosened, the contact resistance increases, which causes an abnormal temperature rise of the terminal during a large current operation, and if the terminal is not handled in time, a fire may be caused, so that it is necessary to monitor the temperature of the terminal.
The traditional terminal temperature monitoring methods mainly comprise two methods: one method is to bind a temperature sensor on the outer cable sheath at the lower part of the cable terminal (the insulation performance of the terminal is affected by direct installation at the terminal), and the temperature sensor sends the acquired temperature information to a monitoring center in a wired/wireless mode. The other method is to adopt a remote infrared temperature measurement method to collect and upload temperature information, the method is greatly influenced by the sensitivity and the temperature measurement distance of temperature measurement equipment, the error fluctuation is irregular, and the automatic acquisition and uploading equipment is complex and has higher cost. For the reasons mentioned above, neither of the two existing terminal temperature monitoring methods is widely used.
Disclosure of Invention
The invention aims to provide a high-voltage cable silicon rubber terminal temperature measuring device aiming at the defects of the prior art so as to improve the measurement precision of the terminal temperature and the stable optical fiber transmission performance.
The problems of the invention are solved by the following technical scheme:
the utility model provides a high tension cable silicon rubber terminal temperature measuring device, includes optic fibre temperature sensor, CPU and wireless communication module in the constitution, optic fibre temperature sensor includes fiber probe, temperature measurement optic fibre and photoelectric conversion module, fiber probe fixes the high tension cable at high tension cable silicon rubber terminal and binding post's junction, temperature measurement optic fibre one end links to each other with fiber probe, and the other end passes in proper order behind the through-hole of each full skirt root of high tension cable outside and is connected with photoelectric conversion module, photoelectric conversion module passes through the serial ports and links to each other with CPU, wireless communication module connects on CPU's serial ports and passes through radio signal and monitoring center exchange information.
According to the high-voltage cable silicon rubber terminal temperature measuring device, the temperature measuring optical fiber of the optical fiber temperature sensor is in interference fit with the umbrella skirt outside the high-voltage cable, and the joint of the temperature measuring optical fiber and the umbrella skirt is sealed by the insulating glue (such as silica gel D04).
According to the high-voltage cable silicon rubber terminal temperature measuring device, the silica gel protective sleeve is arranged at the joint of the high-voltage cable at the high-voltage cable silicon rubber terminal and the connecting terminal, and the silica gel protective sleeve tightly presses the optical fiber probe of the optical fiber temperature sensor on the pressing point of the high-voltage cable and the connecting terminal.
According to the high-voltage cable silicon rubber terminal temperature measuring device, the wireless communication module is a GSM or CDMA mobile communication module, or a WIFI, Bluetooth or short wave communication module.
According to the high-voltage cable silicon rubber terminal temperature measuring device, the optical fiber temperature sensor adopts an YT-P point type optical fiber temperature sensor.
The invention utilizes the optical fiber temperature sensor to directly measure the working temperature of the wiring terminal, greatly improves the temperature measurement precision, and can reach the error range of +/-0.5 ℃ compared with the actual temperature through the combination detection of the optical fiber temperature sensor and the matched temperature measurement equipment; meanwhile, the optical fiber penetrates through the root of the umbrella skirt and is arranged along the cable, so that the stability problem of the optical fiber is solved, the insulating property of the terminal is not affected, and the safe operation of the high-voltage cable silicon rubber terminal is ensured.
Drawings
FIG. 1 is an electrical schematic of the present invention;
FIG. 2 is a schematic view of the installation of the fiber optic temperature sensor;
fig. 3 is an enlarged view of the terminal portion.
The reference numbers in the figures are: CPU, microprocessor, U1, wireless communication module, T, optic fibre probe, GD, photoelectric conversion module, 1, temperature measurement optic fibre, 2, high tension cable, 3, full skirt, 4, silica gel protective sleeve, 5, binding post.
Detailed Description
The invention will be further explained with reference to the drawings.
Referring to fig. 1, 2 and 3, the invention comprises a CPU, a wireless communication module U1, a silica gel sheath tube 4 and an optical fiber temperature sensor, wherein the optical fiber temperature sensor comprises an optical fiber probe T, a photoelectric conversion module GD and a temperature measuring optical fiber 1.
The YT-P point type optical fiber temperature sensor is manufactured by the Xian Gutai sensor company Limited, is free from electromagnetic interference and has high insulativity in a high-voltage or high-current environment, has the characteristics of high measurement precision, accurate measurement position and the like by adopting a point contact measurement mode, and is the best choice for measuring the terminal temperature of the high-voltage cable silicon rubber. The temperature measuring optical fiber material is glass fiber, the insulating property is even higher than that of silicon rubber, and the electric field distribution is not damaged; the temperature measuring optical fiber penetrates through the umbrella skirt in interference fit without clearance, and is sealed by a reinforced perforation of D04 silica gel and the like, so that the overall creepage distance of the terminal is not influenced; the optical fiber sheath is anti-aging and corrosion resistant, and is suitable for long-term outdoor use together with a terminal.
The main performance parameters of the YT-P point type optical fiber temperature sensor are as follows:
interface definition (YT-PZM):
1——+5V DC,2——GND,3——RX,4——TX,5——COM Enanble。
the voltage of the direct current power supply does not exceed +7V, otherwise, the circuit is easy to burn. Ripple exceeding 20mV will affect the accuracy and stability of the temperature measurement, suggesting the use of ultra low ripple linear dc power supplies.
And (3) enabling the temperature measuring optical fiber 1 to penetrate through each umbrella skirt 3 and reach the position of a wiring terminal at the top of the high-voltage cable silicon rubber terminal. The optical fiber probe T is arranged at the head of the temperature measuring optical fiber 1, the optical fiber probe T is arranged at the crimping position of the wiring terminal (the connection position of the wiring terminal and the high-voltage cable core), and the silica gel protective sleeve 4 or the silica gel tape is used for sealing and fixing. The optical fiber probe T directly obtains temperature information from the crimping position of the wiring terminal, and the temperature information is returned along the temperature measuring optical fiber 1 attached to the cable terminal and the cable body. The temperature measurement optical fiber 1 penetrates through the root of each umbrella skirt of the terminal, the electric field of the whole terminal cannot be changed, and the creepage distance of the terminal is not influenced.
When the device works, the CPU collects the working temperature of the wiring terminal in real time through the optical fiber temperature sensor, and uploads the collected information to the monitoring center through the wireless communication module U1, so that the monitoring center can find the terminal with abnormal temperature in time and take corresponding treatment measures to prevent further spreading of accidents.
The invention directly obtains the temperature information from the wiring terminal, and the accuracy is very high; the optical fibers are arranged along the cable and the terminal, so that two key problems of stability and safety of an optical fiber channel are solved, and relevant power specifications are not violated; the device can effectively monitor the temperature of the wire terminal and the high-voltage cable core pressing point.

Claims (3)

1. A high-voltage cable silicon rubber terminal with a temperature measuring function is characterized by comprising a high-voltage cable (2) and a connecting terminal (5), wherein the connecting part of the connecting terminal and a core of the high-voltage cable is a connecting terminal crimping part, an umbrella skirt (3) is arranged outside the high-voltage cable silicon rubber terminal, and a through hole is formed in the root part of the umbrella skirt (3);
the temperature monitoring system is characterized by further comprising an optical fiber temperature sensor, a CPU and a wireless communication module (U1), wherein the optical fiber temperature sensor comprises an optical fiber probe (T), a temperature measuring optical fiber (1) and a photoelectric conversion module (GD), the optical fiber probe (T) is fixed at the joint of a high-voltage cable (2) and a wiring terminal (5) of a high-voltage cable silicon rubber terminal, one end of the temperature measuring optical fiber (1) is connected with the optical fiber probe (T), the other end of the temperature measuring optical fiber (1) sequentially penetrates through holes in the root of each umbrella skirt (3) outside the high-voltage cable (2) and then is connected with the photoelectric conversion module (GD), the photoelectric conversion module (GD) is connected with the CPU through a serial port, and the wireless communication module (U1) is connected to the serial port of the CPU;
the temperature measuring optical fiber (1) of the optical fiber temperature sensor is in interference fit with the umbrella skirt (3) outside the high-voltage cable (2), the joint of the temperature measuring optical fiber (1) and the umbrella skirt (3) is sealed by insulating glue, and the sealing of the through hole is enhanced by silica gel;
the junction of high tension cable (2) and binding post (5) at high tension cable silicon rubber terminal is equipped with silica gel protective sleeve (4), silica gel protective sleeve (4) sticiss optic fibre temperature sensor's optic fibre probe (T) on the pressure contact of high tension cable (2) and binding post (5).
2. The high-voltage cable silicone rubber terminal with temperature measuring function according to claim 1, wherein the wireless communication module (U1) is a GSM or CDMA mobile communication module, or a WIFI, Bluetooth or short-wave communication module.
3. The silicone rubber terminal for high-voltage cables with temperature measurement function according to claim 2, wherein the optical fiber temperature sensor is a YT-P point type optical fiber temperature sensor.
CN201610668975.0A 2016-08-15 2016-08-15 High tension cable silicon rubber terminal temperature measuring device Active CN106124086B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201610668975.0A CN106124086B (en) 2016-08-15 2016-08-15 High tension cable silicon rubber terminal temperature measuring device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201610668975.0A CN106124086B (en) 2016-08-15 2016-08-15 High tension cable silicon rubber terminal temperature measuring device

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CN106124086A CN106124086A (en) 2016-11-16
CN106124086B true CN106124086B (en) 2020-03-10

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112531620A (en) * 2020-11-30 2021-03-19 长园电力技术有限公司 Cable terminal built-in temperature-sensing optical fiber leading-out device and application method

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH05236630A (en) * 1992-02-21 1993-09-10 Fujikura Ltd Joint for optical fiber composite cable
CN203037376U (en) * 2013-02-07 2013-07-03 广州南方电力建设集团有限公司 An operating state monitoring system of a cable connector
CN103630266A (en) * 2013-12-16 2014-03-12 上海华魏光纤传感技术有限公司 Optical fiber temperature measurement host, optical fiber temperature measurement system and optical fiber temperature measurement method
CN103712713A (en) * 2013-12-16 2014-04-09 上海华魏光纤传感技术有限公司 Optical fiber temperature measurement host
CN104977097A (en) * 2014-04-01 2015-10-14 西安和其光电科技有限公司 Method for measuring temperature of high-voltage/extra-high-voltage cable connector by using fiber
CN205175574U (en) * 2015-12-09 2016-04-20 上海电缆研究所 Cable intermediate head conductor temperature measures structure
CN105716740A (en) * 2016-04-12 2016-06-29 深圳市深电电力设备发展有限公司 Electric power sheath having temperature measurement function
CN205940804U (en) * 2016-08-15 2017-02-08 保定合力达电缆附件有限公司 High tension cable silicon rubber terminal with temperature measurement function

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH05236630A (en) * 1992-02-21 1993-09-10 Fujikura Ltd Joint for optical fiber composite cable
CN203037376U (en) * 2013-02-07 2013-07-03 广州南方电力建设集团有限公司 An operating state monitoring system of a cable connector
CN103630266A (en) * 2013-12-16 2014-03-12 上海华魏光纤传感技术有限公司 Optical fiber temperature measurement host, optical fiber temperature measurement system and optical fiber temperature measurement method
CN103712713A (en) * 2013-12-16 2014-04-09 上海华魏光纤传感技术有限公司 Optical fiber temperature measurement host
CN104977097A (en) * 2014-04-01 2015-10-14 西安和其光电科技有限公司 Method for measuring temperature of high-voltage/extra-high-voltage cable connector by using fiber
CN205175574U (en) * 2015-12-09 2016-04-20 上海电缆研究所 Cable intermediate head conductor temperature measures structure
CN105716740A (en) * 2016-04-12 2016-06-29 深圳市深电电力设备发展有限公司 Electric power sheath having temperature measurement function
CN205940804U (en) * 2016-08-15 2017-02-08 保定合力达电缆附件有限公司 High tension cable silicon rubber terminal with temperature measurement function

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