CN109060220A - A kind of cable accessory interfacial pressure detection method and device - Google Patents

A kind of cable accessory interfacial pressure detection method and device Download PDF

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Publication number
CN109060220A
CN109060220A CN201810645028.9A CN201810645028A CN109060220A CN 109060220 A CN109060220 A CN 109060220A CN 201810645028 A CN201810645028 A CN 201810645028A CN 109060220 A CN109060220 A CN 109060220A
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CN
China
Prior art keywords
cable
cable accessory
pressure
pressure sensor
register
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
Application number
CN201810645028.9A
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Chinese (zh)
Inventor
惠宝军
彭云舜
傅明利
徐曼
刘通
侯帅
黄锋
卓然
王邸博
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.)
Xian Jiaotong University
CSG Electric Power Research Institute
China Southern Power Grid Co Ltd
Research Institute of Southern Power Grid Co Ltd
Original Assignee
Xian Jiaotong University
China Southern Power Grid Co Ltd
Research Institute of Southern Power Grid Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Xian Jiaotong University, China Southern Power Grid Co Ltd, Research Institute of Southern Power Grid Co Ltd filed Critical Xian Jiaotong University
Priority to CN201810645028.9A priority Critical patent/CN109060220A/en
Publication of CN109060220A publication Critical patent/CN109060220A/en
Pending legal-status Critical Current

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Classifications

    • GPHYSICS
    • G01MEASURING; TESTING
    • G01LMEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
    • G01L5/00Apparatus for, or methods of, measuring force, work, mechanical power, or torque, specially adapted for specific purposes
    • G01L5/04Apparatus for, or methods of, measuring force, work, mechanical power, or torque, specially adapted for specific purposes for measuring tension in flexible members, e.g. ropes, cables, wires, threads, belts or bands

Abstract

The invention discloses a kind of cable accessory interfacial pressure detection methods, comprising: installs several pressure sensors in the cable surface;The protective layer of cable accessory is removed, and is installed the cable accessory after the protective layer is removed to cable, so that the cable accessory wraps up the cable;The cable is placed in register, adjusts the temperature of the register to preset temperature;The data of the pressure sensor are obtained every preset time;The result of the cable accessory interfacial pressure test is obtained referring to the calibration curve of the pressure sensor obtained in advance according to the data of the pressure sensor.The invention also discloses a kind of cable accessory interfacial pressure detection devices.Using the embodiment of the present invention, can dummycable work when different temperatures the case where changing, thus really reflection cable accessory interfacial pressure situation of change at work.

Description

A kind of cable accessory interfacial pressure detection method and device
Technical field
The present invention relates to field of cable technology more particularly to a kind of cable accessory interfacial pressure detection method and devices.
Background technique
With the continuous development of power grid, power supply system construction level is continuously improved, and power cable gradually replaces aerial Line becomes the main power transmission form of city transmission and distribution networks, and the use of cable accessory is also increasing therewith.But in recent years due to Manufacture installation process other equal various reasons lack of standardization, cable accessory often break down in operational process, seriously affect electricity The safe operation of Force system.The interface tightness degree of cable accessory and cable body is to cable accessory interface stability and reliability It is very important, rubber prefabricated type cable accessory is widely applied in engineering, pressed by the enclasping force or outer apply of attachment itself Power ensures good with conductive cable contacts, avoids the occurrence of the related defects such as air gap.
So keeping the key for thering are enough interfacial pressures to be to ensure that cable accessory safe operation between cable accessory and cable One of factor, the size of interfacial pressure and distribution directly influence the field distribution of cable termination, final influence cable accessory Electric property and service life.If interfacial pressure is excessive, cable accessory is be easy to cause to tear, to cause electric tree;If interfacial pressure mistake It is small, it the defects of being also easy to produce air gap, causes disruptive field intensity to decline, leads to failure.Therefore HV cable accessories are understood and grasped Interfacial pressure size and distribution in the process of running is highly important.And since cable accessory cooperates a variety of internal diameter cables Realize different magnitude of interference, since current-carrying capacity different temperatures will appear large change when operation, the variation of temperature similarly be will affect The interfacial pressure of cable accessory, at this point, then needing to test the interfacial pressure of different magnitude of interference situations and different temperatures cable accessory Situation of change, and it is not directed to the test of the influence in relation to temperature to the interfacial pressure of cable accessory in the prior art, thus It is unable to get influence of the temperature to the interfacial pressure of cable accessory.
Summary of the invention
The purpose of the embodiment of the present invention is that providing a kind of cable accessory interfacial pressure detection method and device, electricity can be simulated The case where different temperatures changes when cable works, to really reflect cable accessory interfacial pressure situation of change at work.
To achieve the above object, the embodiment of the invention provides a kind of cable accessory interfacial pressure detection methods, comprising:
Several pressure sensors are installed in cable surface;
The protective layer of cable accessory is removed, and is installed the cable accessory after the protective layer is removed to the cable On, so that the cable accessory wraps up the cable;
The cable is placed in register, adjusts the temperature of the register to preset temperature;
The data of the pressure sensor are obtained every preset time;
Calibration curve according to the data of the pressure sensor referring to the pressure sensor obtained in advance obtains institute State the result of the interfacial pressure test of cable accessory.
Compared with prior art, cable accessory interfacial pressure detection method disclosed by the invention, first by cable meter Several pressure sensors are installed in face, and the cable accessory after removal protective layer is installed to the cable, so that institute Cable accessory is stated to wrap up the cable;Then the cable is placed in register, and adjusts the temperature of the register To preset temperature;The data of the pressure sensor are finally obtained every preset time, and according to the number of the pressure sensor The result of the interfacial pressure test of the cable accessory is obtained according to the calibration curve referring to the pressure sensor obtained in advance. Solves the test for being not directed to the influence in relation to temperature to cable accessory interfacial pressure in the prior art, to be unable to get The problem of influence of the temperature to the interfacial pressure of cable accessory, can dummycable work when different temperatures the case where changing, from And really reflect cable accessory interfacial pressure situation of change at work.
As an improvement of the above scheme, the pressure sensor be respectively arranged on the low compressive stress of the cable accessory cone and On the surface of the corresponding cable of high voltage shield.
As an improvement of the above scheme, the pressure sensor first passes through universal testing machine in advance and is calibrated automatically.
As an improvement of the above scheme, the cable accessory interfacial pressure detection method further include:
When the temperature of the register is more than temperature threshold, send a warning.
As an improvement of the above scheme, the register is baking oven.
To achieve the above object, the embodiment of the invention also provides a kind of cable accessory interfacial pressure detection devices, comprising: Cable, pressure sensor, register and data acquisition device;Wherein,
The surface of the cable is used for connecting cable attachment, so that the cable accessory wraps up the cable;
The pressure sensor is set to the surface of the cable, and the pressure sensor is for acquiring the cable accessory Interfacial pressure;
The register is used to carry out heating to the cable until the temperature of the register reaches preset temperature;
The data acquisition device is used to acquire the data of the pressure sensor, so that host computer is passed according to the pressure The data of sensor obtain the cable accessory interfacial pressure test referring to the calibration curve of the pressure sensor obtained in advance Result.
Compared with prior art, cable accessory interfacial pressure detection device disclosed by the invention, first by cable meter Several pressure sensors are installed in face, and the cable accessory after removal protective layer is installed to the cable, so that institute Cable accessory is stated to wrap up the cable;Then the cable is placed in register, and adjusts the temperature of the register To preset temperature;Final data acquisition device obtains the data of the pressure sensor every preset time, so that host computer root The cable accessory is obtained referring to the calibration curve of the pressure sensor obtained in advance according to the data of the pressure sensor Interfacial pressure test result.It solves and is not directed in the prior art in relation to temperature to the interfacial pressure of cable accessory The test of influence, thus the problem of being unable to get influence of the temperature to the interfacial pressure of cable accessory, it being capable of dummycable work When different temperatures the case where changing, thus really reflection cable accessory interfacial pressure situation of change at work.
As an improvement of the above scheme, the pressure sensor be respectively arranged on the low compressive stress of the cable accessory cone and On the surface of the corresponding cable of high voltage shield.
As an improvement of the above scheme, the cable accessory interfacial pressure detection device further includes universal testing machine, described Universal testing machine for calibrating the pressure sensor automatically.
As an improvement of the above scheme, the cable accessory interfacial pressure detection device further includes alarm device, the police Reporting device is used to send a warning when the temperature of the register is more than temperature threshold.
As an improvement of the above scheme, the register is baking oven.
Detailed description of the invention
Fig. 1 is a kind of flow chart of cable accessory interfacial pressure detection method provided in an embodiment of the present invention;
Fig. 2 is the distribution of pressure sensor in a kind of cable accessory interfacial pressure detection method provided in an embodiment of the present invention Schematic diagram;
Fig. 3 is a kind of structural schematic diagram of cable accessory interfacial pressure detection device provided in an embodiment of the present invention.
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.
Embodiment one
It is a kind of flow chart of cable accessory interfacial pressure detection method provided in an embodiment of the present invention referring to Fig. 1, Fig. 1; Include:
S1, several pressure sensors are installed in cable surface;
S2, the protective layer for removing cable accessory, and install the cable accessory after the protective layer is removed to described On cable, so that the cable accessory wraps up the cable;
S3, the cable is placed in register, adjusts the temperature of the register to preset temperature;
S4, the data that the pressure sensor is obtained every preset time;
S5, it is obtained according to the data of the pressure sensor referring to the calibration curve of the pressure sensor obtained in advance The result of the cable accessory interfacial pressure test.
Specifically, in step sl, referring to fig. 2, Fig. 2 is a kind of cable accessory interfacial pressure provided in an embodiment of the present invention The distribution schematic diagram of pressure sensor in detection method;Preferably, the pressure sensor includes five, but in other embodiments In, the quantity of the pressure sensor can give as the case may be, all within the scope of the present invention.Preferably, institute State the table that pressure sensor is respectively arranged on the cable corresponding with the low compressive stress of cable accessory cone and high voltage shield On face.The pressure sensor is used to measure the interfacial pressure of the cable accessory.
Preferably, before the pressure sensor is installed, can by universal testing machine to the pressure sensor into The automatic calibration of row, the universal testing machine is a dynamics experimental device, in the specific implementation, can pass through universal testing machine control pair Each pressure sensor applies pressure value, while measuring the resistance variations of each pressure sensor, passes through stress (pressure Power) and resistance corresponding relationship, obtain the calibration curve of the pressure sensor.And the calibration of the different pressure sensors Curve is different, converts to obtain the actual pressure value of the pressure sensor by the calibration curve in actual test.
Specifically, in step s 2, choosing one section of cable for removing oversheath, it is preferred that the cable is three-phase electricity Cable, external insulation layer and the core ground connection of the cable.In a practical situation, to ensure that the cable accessory can be accurately mounted on On the cable, to avoid the defects of generating air gap, it is ensured that cable operates normally, and the internal diameter of the cable accessory is usually all Less than the internal diameter of the cable.
Specifically, in step s3, the cable is placed in register, the temperature of the register is adjusted to default Temperature, the register are baking oven.When the temperature of the register reaches the preset temperature, make the register Temperature to be maintained at the preset temperature constant.
Specifically, during heating to the cable, obtaining institute every preset time in step S4~S5 State the data of pressure sensor;The temperature for reading the register simultaneously, according to the data of the pressure sensor referring to pre- The calibration curve of the pressure sensor first obtained obtains the result of the interfacial pressure test of the cable accessory.To obtain The case where interfacial pressure of the cable accessory varies with temperature.
Further, while the register heats the cable, when the temperature of the register When more than temperature threshold, send a warning.User can be reminded to close electricity in time when the temperature is excessively high in the register Source.
When it is implemented, first by installing several pressure sensors in cable surface, and will be after removal protective layer The cable accessory is installed to the cable, so that the cable accessory wraps up the cable;Then the cable is set In register, and the temperature of the register is adjusted to preset temperature;Finally the pressure is obtained every preset time to pass The data of sensor, and the calibration curve according to the data of the pressure sensor referring to the pressure sensor obtained in advance obtains The result tested to the cable accessory interfacial pressure.
Compared with prior art, cable accessory interfacial pressure detection method disclosed by the invention, solves in the prior art It is not directed to the test of the influence in relation to temperature to the interfacial pressure of cable accessory, to be unable to get temperature to cable accessory Interfacial pressure influence the problem of, can dummycable work when different temperatures change the case where, to really reflect cable Attachment interfacial pressure situation of change at work.
Embodiment two
It is a kind of structural representation of cable accessory interfacial pressure detection device provided in an embodiment of the present invention referring to Fig. 3, Fig. 3 Figure.The cable accessory interfacial pressure detection device includes: cable 2, pressure sensor 3, register 4 and data acquisition dress Set 5;Wherein,
The surface of the cable 2 is used for connecting cable attachment 1, so that the cable accessory 1 wraps up the cable 2;
The pressure sensor 3 is set to the surface of the cable 2, and the pressure sensor 3 is attached for acquiring the cable The interfacial pressure of part 1;
The register 4 is used to carry out heating to the cable 2 until the temperature of the register 4 reaches default temperature Degree;
The data acquisition device 5 is used to acquire the data of the pressure sensor 3, so that host computer is according to the pressure The data of sensor 3 obtain 1 interfacial pressure of cable accessory referring to the calibration curve of the pressure sensor 3 obtained in advance The result of test.
Specifically, the pressure sensor 3 includes three, but in other embodiments, the quantity of the pressure sensor 3 It can give as the case may be, all within the scope of the present invention.Preferably, the pressure sensor 3 may include One pressure sensor, second pressure sensor and third pressure sensor.Preferably, in conjunction with Fig. 2, the first pressure sensor The surface that the corresponding cable 2 is bored with the low compressive stress of the cable accessory 1 is respectively arranged on the third pressure sensor On, the second pressure sensor is set on the surface of the cable 2 corresponding with the high voltage shield of the cable accessory 1. The pressure sensor 3 is used to measure the interfacial pressure of the cable accessory 1.
Preferably, the cable accessory interfacial pressure detection device further includes universal testing machine, is passed installing the pressure Before sensor 3, the pressure sensor 3 can be calibrated automatically by universal testing machine, the universal testing machine is one Dynamics experimental device can be controlled by universal testing machine in the specific implementation and apply pressure to each pressure sensor 3 Value, while the resistance variations for measuring each pressure sensor 3 are obtained by the corresponding relationship of stress (pressure) and resistance The calibration curve of the pressure sensor 3.And the calibration curve of the different pressure sensors 3 is different, in actual test It converts to obtain the actual pressure value of the pressure sensor 3 by the calibration curve.
Specifically, choosing one section of cable 2 for removing oversheath, it is preferred that the cable 2 is threephase cable, the electricity The external insulation layer and core of cable 2 are grounded.In a practical situation, to ensure that the cable accessory 1 can be accurately mounted on the electricity On cable 2, to avoid the defects of generating air gap, it is ensured that cable 2 operates normally, and the internal diameter of the cable accessory 1 is usually all small In the internal diameter of the cable 2.
Specifically, the cable 2 is placed in register 4, the temperature of the register 4 is adjusted to preset temperature, institute Stating register 4 is baking oven.When the temperature of the register 4 reaches the preset temperature, make the temperature of the register 4 It is constant that degree is maintained at the preset temperature.
Specifically, the data acquisition device 5 is every during the register 4 heats the cable 2 The data of the pressure sensor 3 are obtained every preset time;The temperature for reading the register 4 simultaneously, so that host computer root It is attached that the calibration curve of the pressure sensor 3 obtained in advance according to the data reference of the pressure sensor 3 obtains the cable The result of the interfacial pressure test of part 1.To obtain the case where interfacial pressure of the cable accessory 1 varies with temperature.
Further, while the register 4 heats the cable 2, when the temperature of the register 4 When degree is more than temperature threshold, send a warning.User can be reminded to close in time when the temperature is excessively high in the register 4 Power supply.
When it is implemented, first by installing several pressure sensors 3 on 2 surface of cable, and will be after removal protective layer The installation of the cable accessory 1 on the cable 2 so that the cable accessory 1 wraps up the cable 2;It then will be described Cable 2 is placed in register 4, and adjusts the temperature of the register 4 to preset temperature;Final data acquisition device 5 every Preset time obtains the data of the pressure sensor 3, so that host computer is according to the data of the pressure sensor 3 referring in advance The calibration curve of the pressure sensor 3 obtained obtains the result of the interfacial pressure test of the cable accessory 1.
Compared with prior art, cable accessory interfacial pressure detection device disclosed by the invention, solves in the prior art It is not directed to the test of the influence in relation to temperature to the interfacial pressure of cable accessory, to be unable to get temperature to cable accessory Interfacial pressure influence the problem of, can dummycable work when different temperatures change the case where, to really reflect cable Attachment interfacial pressure situation of change at work.
The above is a preferred embodiment of the present invention, it is noted that for those skilled in the art For, various improvements and modifications may be made without departing from the principle of the present invention, these improvements and modifications are also considered as Protection scope of the present invention.

Claims (10)

1. a kind of cable accessory interfacial pressure detection method characterized by comprising
Several pressure sensors are installed in cable surface;
The protective layer of cable accessory is removed, and is installed the cable accessory after the protective layer is removed to the cable, So that the cable accessory wraps up the cable;
The cable is placed in register, adjusts the temperature of the register to preset temperature;
The data of the pressure sensor are obtained every preset time;
Calibration curve according to the data of the pressure sensor referring to the pressure sensor obtained in advance obtains the electricity The result of cable fittings interfacial pressure test.
2. cable accessory interfacial pressure detection method as described in claim 1, which is characterized in that the pressure sensor difference On the surface of the cable corresponding with the low compressive stress of cable accessory cone and high voltage shield.
3. cable accessory interfacial pressure detection method as described in claim 1, which is characterized in that the pressure sensor is preparatory It is calibrated automatically by universal testing machine.
4. cable accessory interfacial pressure detection method as described in claim 1, which is characterized in that the cable accessory interface pressure Power detection method further include:
When the temperature of the register is more than temperature threshold, send a warning.
5. cable accessory interfacial pressure detection method as described in claim 1, which is characterized in that the register is to dry Case.
6. a kind of cable accessory interfacial pressure detection device characterized by comprising cable, pressure sensor, register with And data acquisition device;Wherein,
The surface of the cable is used for connecting cable attachment, so that the cable accessory wraps up the cable;
The pressure sensor is set to the surface of the cable, and the pressure sensor is used to acquire the interface of the cable accessory Pressure;
The register is used to carry out heating to the cable until the temperature of the register reaches preset temperature;
The data acquisition device is used to acquire the data of the pressure sensor, so that host computer is according to the pressure sensor Data obtain the knot of the cable accessory interfacial pressure test referring to the calibration curve of the pressure sensor obtained in advance Fruit.
7. cable accessory interfacial pressure detection device as claimed in claim 6, which is characterized in that the pressure sensor difference On the surface of the cable corresponding with the low compressive stress of cable accessory cone and high voltage shield.
8. cable accessory interfacial pressure detection device as claimed in claim 6, which is characterized in that the cable accessory interface pressure Force checking device further includes universal testing machine, and the universal testing machine for calibrating the pressure sensor automatically.
9. cable accessory interfacial pressure detection device as claimed in claim 6, which is characterized in that the cable accessory interface pressure Force checking device further includes alarm device, and the alarm device is used for when the temperature of the register is more than temperature threshold, It sends a warning.
10. cable accessory interfacial pressure detection device as claimed in claim 6, which is characterized in that the register is to dry Case.
CN201810645028.9A 2018-06-21 2018-06-21 A kind of cable accessory interfacial pressure detection method and device Pending CN109060220A (en)

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CN201810645028.9A CN109060220A (en) 2018-06-21 2018-06-21 A kind of cable accessory interfacial pressure detection method and device

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Application Number Priority Date Filing Date Title
CN201810645028.9A CN109060220A (en) 2018-06-21 2018-06-21 A kind of cable accessory interfacial pressure detection method and device

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Publication Number Publication Date
CN109060220A true CN109060220A (en) 2018-12-21

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Application publication date: 20181221