CN207556467U - High pressure electric cable with large cross-section thermal walking monitoring device - Google Patents
High pressure electric cable with large cross-section thermal walking monitoring device Download PDFInfo
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- CN207556467U CN207556467U CN201721348036.4U CN201721348036U CN207556467U CN 207556467 U CN207556467 U CN 207556467U CN 201721348036 U CN201721348036 U CN 201721348036U CN 207556467 U CN207556467 U CN 207556467U
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- displacement sensor
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- acquisition module
- displacement
- data acquisition
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- 238000012806 monitoring device Methods 0.000 title claims abstract description 10
- 238000006073 displacement reaction Methods 0.000 claims abstract description 66
- 238000005452 bending Methods 0.000 claims abstract description 4
- BASFCYQUMIYNBI-UHFFFAOYSA-N platinum Chemical compound [Pt] BASFCYQUMIYNBI-UHFFFAOYSA-N 0.000 claims description 22
- 229910052697 platinum Inorganic materials 0.000 claims description 11
- 238000009529 body temperature measurement Methods 0.000 claims description 10
- 238000012423 maintenance Methods 0.000 abstract description 3
- 230000005856 abnormality Effects 0.000 abstract description 2
- 238000012544 monitoring process Methods 0.000 description 7
- 230000000930 thermomechanical effect Effects 0.000 description 7
- 238000005259 measurement Methods 0.000 description 5
- 239000004020 conductor Substances 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 230000006378 damage Effects 0.000 description 2
- 229910052751 metal Inorganic materials 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 229920003023 plastic Polymers 0.000 description 2
- 239000004033 plastic Substances 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- 230000001681 protective effect Effects 0.000 description 2
- 238000011160 research Methods 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000002950 deficient Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- NJPPVKZQTLUDBO-UHFFFAOYSA-N novaluron Chemical compound C1=C(Cl)C(OC(F)(F)C(OC(F)(F)F)F)=CC=C1NC(=O)NC(=O)C1=C(F)C=CC=C1F NJPPVKZQTLUDBO-UHFFFAOYSA-N 0.000 description 1
- 239000000523 sample Substances 0.000 description 1
- 230000008646 thermal stress Effects 0.000 description 1
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Abstract
The utility model is related to a kind of high pressure electric cable with large cross-section thermal walking monitoring devices, including the first displacement sensor, second displacement sensor and data acquisition module, first displacement sensor is arranged on the lowest part of electric cable bending between adjacent anchor ear, the supplementary base for being arranged right below being adapted with first displacement sensor of first displacement sensor, the top surface of the supplementary base is horizontally disposed with；The second displacement sensor is positioned close at the cable surface of anchor ear, which is equipped with the reflecting surface perpendicular to horizontal plane towards the side of second displacement sensor；First displacement sensor and second displacement sensor are connect with data acquisition module, and the data acquisition module is connect with display module.The device convenient for operation maintenance personnel watch cable axial direction and width to displacement, and can note abnormalities ahead of time and avoid the generation or expansion of failure.
Description
Technical field
The utility model is related to a kind of high pressure electric cable with large cross-section thermal walking monitoring device, especially for cable due to by heat engine
The monitoring of change in displacement caused by tool power.
Background technology
With the rapid development of economic construction, high voltage long range electric cable with large cross-section obtains more and more extensive utilizations,
The thermomechanical force that high-tension cable is subject in operation is just as one of the main reason for leading to power cable fault, through statistics, south
The high-tension cable failure of capital area in recent years, defective proportion has been up to 36.2% as caused by thermomechanical force.But due to right both at home and abroad
The research of thermal stress this respect is very few, therefore the reason can be easy to be ignored when high-tension cable accident analysis, and incite somebody to action
Other reasons are mistakenly considered the most basic reason for leading to failure, and so as to understand the truth of the matter, warp can not be drawn from failure
Lesson is tested to improve the operation and management level of cable, also can not just avoid leading to cable fault by the effect of thermomechanical force next time
Generation.
Conductor temperature is caused to change since load current changes inside cable（Or during environment temperature change）So that cable
The variation expanded with heat and contract with cold is generated, resulting expansion or shrinkage power is collectively referred to as thermomechanical force.Thermomechanical force causes cable to generate
Deformation, displacement phenomena such as be referred to as thermomechanical effect.Conventional electrical power cable structure is conductor, insulation, protective metal shell, plastic protective
Set, cable are differed greatly with the ess-strain of plastics and conductor material.Particularly over long distances, heavy in section power cable, once
Thermal stretching is generated, larger destruction will be generated to cable body, connector, terminal：On the one hand, if effective reply is not taken to arrange
It applies, then can lead to cable arch camber, excessively displacement, bending even damage cable；On the other hand, cable is under the action of thermomechanical force
To occur flexural deformation repeatedly, cable metal sheath is made to generate repeated strain, causes the loss of cable body and its attachment, occur
Power failure.
At present, thermal-mechanical power research is fewer and fewer in being run both at home and abroad to cable, and there is no be directed to running heat
The device achievement that deformational displacement caused by mechanical force is monitored.Therefore it is badly in need of a set of monitoring high pressure electric cable with large cross-section thermal walking shape
The monitoring device of state.
Utility model content
The utility model will solve technical problem：A kind of axial direction for convenient for operation maintenance personnel watch cable is provided
With width to displacement, and it can note abnormalities ahead of time and avoid the generation of failure or widened high pressure electric cable with large cross-section thermal walking monitoring dress
It puts.
In order to solve the above-mentioned technical problem, the utility model proposes technical solution be：A kind of high pressure electric cable with large cross-section heat
Displacement monitor, including the first displacement sensor, second displacement sensor and data acquisition module, first displacement sensing
Device is arranged on the lowest part of electric cable bending between adjacent anchor ear, and first displacement sensor is arranged right below and described first
The supplementary base that displacement sensor is adapted, the top surface of the supplementary base are horizontally disposed with；The second displacement sensor is arranged on
At the cable surface of anchor ear, which is equipped with vertical reflecting surface towards the side of second displacement sensor, for measuring
Horizontal distance at this between anchor ear adjacent thereto；First displacement sensor and second displacement sensor are adopted with data
Collect module connection, the data acquisition module is connect with display module, for the data of displaying data in real-time acquisition module acquisition.
The utility model becomes for monitoring the caused displacement in the case where thermal-mechanical power influences of high pressure electric cable with large cross-section
Change, including the axial change in displacement of monitoring and width to change in displacement.When measuring cable width to change in displacement, set on the ground
Supplementary base is put as the datum level measured, the first displacement sensor is arranged on, is measured in one section of cable between adjacent anchor ear
Between bend the terrain clearance of lowest part, reflect cable width to change in displacement situation with the situation of change of this height；And it is measuring
When cable axial displacement changes, second displacement sensor is placed in cable on the surface at anchor ear, measures and cable is arrived at this
The horizontal distance of anchor ear reflects cable axial displacement situation of change with the situation of change of this distance.The utility model passes through aobvious
Show module, the axial displacement for convenient for operation maintenance personnel watch cable in real time changes with width to change in displacement, finds ahead of time
Exception avoids the generation or expansion of failure.
Being further improved for above-mentioned technical proposal be：Further include the memory module being connect with data acquisition module.In this way may be used
The data of data collecting module collected to be stored, whole observation and subsequent processing are carried out so as to facilitate.
The further improvement of above-mentioned technical proposal is：It further includes and is separately mounted on cable surface and cable tunnel wall
Two platinum resistance thermometer sensor, temperature measurement modules, the platinum resistance thermometer sensor, temperature measurement module are connect with data acquisition module.The platinum resistance thermometer sensor, thermometric
Module is used to measure the surface temperature and cable surrounding temperature of cable.
The further improvement of above-mentioned technical proposal is：Further include the toroidal inductor electricity being sleeved on the outside of the cable
Current transformer, the current transformer are connect with data acquisition module.
Description of the drawings
The utility model is described in further detail below in conjunction with the accompanying drawings.
Fig. 1 is the structure diagram of the utility model embodiment.
Fig. 2 is the width of the utility model embodiment to displacement monitoring schematic diagram.
Fig. 3 is the axial displacement monitoring schematic diagram of the utility model embodiment.
Specific embodiment
Embodiment
The high pressure electric cable with large cross-section thermal walking monitoring device of the present embodiment, as shown in Figs. 1-3, including the first displacement sensor
2-1, second displacement sensor 2-2 and data acquisition module 8, the first displacement sensor 2-1 are arranged on adjacent 4 cables 1 of anchor ear
The lowest part to bend, the supplementary base for being arranged right below being adapted with the first displacement sensor 2-1 of the first displacement sensor 2-1
3, the top surface of supplementary base 3 is horizontally disposed with the datum level as width to displacement measurement.In general, cable 1 is influenced in thermal-mechanical power
Under, width can occur for cable 1 to displacement, and the width of cable 1 can be reflected by the terrain clearance for measuring the lowest part that bends among cable
To change in displacement.The present embodiment selects laser displacement sensor to carry out non-contact measurement, and the sensor accuracy high range is small, needs
One supplementary base 3 to be installed on the ground, so as to be controlled measurement distance in the range of transducer range and serve as reflection
Face（It is parallel with horizontal plane）.As shown in Fig. 2, the distance between two neighboring anchor ear 4 is L, the first displacement sensor 2-1 to auxiliary
The distance of the top surface of pedestal 3 is H, and width is to displacementd。
As shown in figure 3, second displacement sensor 2-2 is positioned close at 1 surface of cable of anchor ear 4, the anchor ear is towards the
The side of two displacement sensors is equipped with vertical（I.e. perpendicular to horizontal plane）Reflecting surface, for measuring anchor ear adjacent thereto at this
Horizontal distance X between 4.When measuring axial displacement, one section of nearer cable can be considered straightway at from anchor ear.By laser
Displacement sensor is fixed on cable upper surface, makes laser emitting surface and is parallel to horizontal plane, while one is installed on the left of anchor ear
Reflecting surface（Perpendicular to horizontal plane）, the distance X of measurement sensor to reflecting surface, with the axial position of the variation reflection cable of this distance
Move e.
As shown in Figure 1, the first displacement sensor 2-1 and second displacement sensor 2-2 are connect with data acquisition module 8,
Data acquisition module 8 is connect with display module 6.
The present embodiment further includes the memory module 5 being connect with data acquisition module 8.It in this way can be by data acquisition module 8
The data of acquisition are stored, and whole observation and subsequent processing are carried out so as to facilitate.
The present embodiment can also make following improve：1）Two platinum resistance thermometer sensor,s are installed on 1 surface of cable and cable tunnel wall
Temperature measurement module 2-4, platinum resistance thermometer sensor, temperature measurement module 2-4 are connect with data acquisition module 8.Platinum resistance thermometer sensor, temperature measurement module 2-4 is used to survey
Measure the surface temperature and cable surrounding temperature of cable.The platinum resistance thermometer sensor, temperature measurement module 2-4 for surveying cable just face temperature is needed it
Probe is fixed on cable surface；Surveying the platinum resistance thermometer sensor, temperature measurement module 2-4 leads of cable surrounding temperature needs to be fixed in tunnel wall,
It is popped one's head in lean out and be placed in cable tunnel environment.
2）1 outer sheath of cable is equipped with toroidal inductor current transformer 2-3, current transformer 2-3 and data acquisition module
Block 8 connects.
By above-mentioned improvement, the first displacement sensor, second displacement sensor, platinum resistance thermometer sensor, temperature measurement module in the present embodiment
The analog signal obtained with current transformer measurement, be acquired by data acquisition module and carry out A/D conversion become number
Signal, then by treated, data are used for display module and memory module.
The utility model is not limited to the specific technical solution described in above-described embodiment, in addition to the implementation, this practicality
It is novel to have other embodiment.All technical solutions formed using equivalent replacement are the guarantor of the requires of the utility model
Protect range.
Claims (4)
1. a kind of high pressure electric cable with large cross-section thermal walking monitoring device, it is characterised in that：Including the first displacement sensor, second displacement
Sensor and data acquisition module, first displacement sensor is arranged on the lowest part of electric cable bending between adjacent anchor ear, described
The supplementary base for being arranged right below being adapted with first displacement sensor of first displacement sensor, the supplementary base
Top surface is horizontally disposed with；The second displacement sensor is positioned close at the cable surface of anchor ear, and the anchor ear is towards second displacement
The side of sensor is equipped with vertical reflecting surface；First displacement sensor and second displacement sensor are and data acquisition module
Block connects, and the data acquisition module is connect with display module.
2. high pressure electric cable with large cross-section thermal walking monitoring device according to claim 1, it is characterised in that：It further includes and data
The memory module of acquisition module connection.
3. high pressure electric cable with large cross-section thermal walking monitoring device according to claim 2, it is characterised in that：It further includes and pacifies respectively
Two platinum resistance thermometer sensor, temperature measurement modules on cable surface and cable tunnel wall, the platinum resistance thermometer sensor, temperature measurement module are adopted with data
Collect module connection.
4. high pressure electric cable with large cross-section thermal walking monitoring device according to claim 3, it is characterised in that：It further includes and is sleeved on
Toroidal inductor current transformer on the outside of the cable, the current transformer are connect with data acquisition module.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721348036.4U CN207556467U (en) | 2017-10-19 | 2017-10-19 | High pressure electric cable with large cross-section thermal walking monitoring device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721348036.4U CN207556467U (en) | 2017-10-19 | 2017-10-19 | High pressure electric cable with large cross-section thermal walking monitoring device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207556467U true CN207556467U (en) | 2018-06-29 |
Family
ID=62674345
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721348036.4U Active CN207556467U (en) | 2017-10-19 | 2017-10-19 | High pressure electric cable with large cross-section thermal walking monitoring device |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107816947A (en) * | 2017-10-19 | 2018-03-20 | 国网江苏省电力公司南京供电公司 | High pressure electric cable with large cross-section thermal walking monitoring device |
-
2017
- 2017-10-19 CN CN201721348036.4U patent/CN207556467U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107816947A (en) * | 2017-10-19 | 2018-03-20 | 国网江苏省电力公司南京供电公司 | High pressure electric cable with large cross-section thermal walking monitoring device |
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