CN211294728U - 10kV and above intelligent crosslinked polyethylene insulated power cable - Google Patents
10kV and above intelligent crosslinked polyethylene insulated power cable Download PDFInfo
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- CN211294728U CN211294728U CN202020092265.XU CN202020092265U CN211294728U CN 211294728 U CN211294728 U CN 211294728U CN 202020092265 U CN202020092265 U CN 202020092265U CN 211294728 U CN211294728 U CN 211294728U
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Abstract
The utility model discloses an intelligent crosslinked polyethylene insulated power cable of 10kV and above, which comprises a conductor, the insulating layer, restrictive coating and SAW temperature sensor, the conductor is located the cable center, crowded package has the conductor shielding layer outside the conductor in proper order, insulating layer and insulation shield, the insulation core after the shielding is formed around having the metallic shield layer outside the insulation shield, the insulated wire core transposition is in the same place, it has netted filler to fill in the clearance of transposition, the cladding has the band in proper order on the insulation core of transposition and the netted filler, the separation sleeve, metallic armor and restrictive coating, SAW temperature sensor pastes on the cable, fixed setting is between metallic armor and restrictive coating. The utility model discloses a temperature when passive sensor technique measuring cable moves, state when the control cable moves guarantees cable safe operation, has wireless, measure not have limitation, the installation is easy, non-maintaining, the degree of safety is high, with low costs, the reliability is high and the high characteristic of measurement accuracy.
Description
Technical Field
The utility model relates to a 10kV and above intelligent crosslinked polyethylene insulated power cable, in particular to crosslinked polyethylene insulated power cable with temperature measurement control.
Background
At present, the problem of overhigh conductor temperature caused by overlarge current-carrying capacity of a traditional crosslinked polyethylene insulated cable with the voltage of 10kV or more is solved, the cable is inevitably heated seriously by long-term overload, the insulation performance is reduced, and finally the cable is punctured.
In order to measure the real-time temperature of the cable operation more accurately and timely and adjust the cable operation parameters timely according to the measured data, the invention provides an intelligent crosslinked polyethylene insulated power cable of 10kV or more, and the scheme is generated.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide an intelligent crosslinked polyethylene insulated power cable 10kV and above to solve the too big problem that causes the cable temperature too high of crosslinked polyethylene insulated cable conductor current-carrying capacity 10kV and above.
In order to achieve the above object, the solution of the present invention is:
an intelligent crosslinked polyethylene insulated power cable of 10kV or more, which comprises a conductor, a conductor shielding layer, an insulating shielding layer, a metal shielding layer, a reticular filler and a belting layer, the spacer sleeve, the metal armor, restrictive coating and SAW (surface acoustic wave) temperature sensor, the conductor is located the cable center, crowded package has the conductor shielding layer outside the conductor in proper order, insulating layer and insulation shield, insulation shield has the insulation core after the metal shielding layer forms the shielding around the package outside, the transposition of insulation core is in the same place, it has netted filler to fill in the clearance of transposition, the cladding has the band in proper order on the insulation core of transposition and the netted filler, the spacer sleeve, metal armor and restrictive coating, it supplies with SAW temperature sensor and the outside temperature acquisition processing apparatus wireless connection to post on the cable, SAW temperature sensor is fixed to be set up between metal armor and restrictive coating.
The SAW temperature sensors are arranged in a plurality of numbers, and the SAW temperature sensors are attached to the cable at intervals.
The conductor is formed by stranding and pressing copper single wires, and the cross section of the conductor is circular.
The insulating layer is formed outside the conductor by adopting a three-layer co-extrusion technology together with the conductor shielding layer and the insulating shielding layer, and the thickness of the conductor shielding layer and the insulating shielding layer is 1.0 mm.
The isolation sleeve is made of polyvinyl chloride or polyethylene material.
The metal armor layer adopts a metal belt or a metal wire.
The sheath layer is a polyvinyl chloride sheath or a polyethylene sheath.
After the structure of the oil adding device is adopted, the utility model discloses compare with general crosslinked polyethylene power cable, SAW temperature sensor has been increased, can combine the temperature when outside temperature acquisition processing apparatus real-time measurement cable operation, monitor the temperature of cable operation, in time know the state of cable operation, the electric current size of adjustment cable operation is in order to reduce the operating temperature of cable when necessary to can monitor the temperature of adjustment back cable operation through SAW temperature sensor, avoid cable conductor current-carrying capacity too big, conductor temperature is too high and the accident that causes. Meanwhile, the SAW temperature sensor is a passive sensor and has the characteristics of no limitation in measurement, easiness in installation, no maintenance, high safety degree, low cost, high reliability and high measurement precision.
The present invention will be further explained with reference to the drawings and examples.
Causing the problem of excessive cable temperature.
Drawings
Fig. 1 is a schematic structural diagram of the present invention.
Description of the reference symbols
Conductor 1, conductor shielding layer 2, insulating layer 3, insulating shield 4, metallic shield 5, netted filler 6, belting layer 7, separation sleeve 8, metal armor 9, restrictive coating 10, SAW temperature sensor 11.
Detailed Description
As shown in fig. 1, the utility model discloses an intelligent crosslinked polyethylene insulated power cable of 10kV and above, comprising a conductor 1, a conductor shielding layer 2, an insulating layer 3, an insulating shielding layer 4, a metal shielding layer 5, a reticular filler 6, a belting layer 7, an isolation sleeve 8, a metal armor layer 9, a sheath layer 10 and a SAW (surface acoustic wave) temperature sensor 11, wherein the conductor 1 is positioned at the center of the cable, the conductor shielding layer 2, the insulating layer 3 and the insulating shielding layer 4 are extruded outside the conductor 1 in sequence, the metal shielding layer 5 is wrapped outside the insulating shielding layer 4 to form a shielded insulated wire core, the insulated wire cores are twisted together, the reticular filler 6 is filled in a twisted gap, the belting layer 7, the isolation sleeve 8, the metal armor layer 9 and the sheath layer 10 are wrapped on the twisted insulated wire core and the reticular filler 6 in sequence, the SAW temperature sensor 11 is pasted on the cable along the length direction, the SAW temperature sensor 11 is fixedly arranged between the metal armor layer 9 and the sheath layer 10, and the SAW temperature sensor 11 is wirelessly connected with an external temperature acquisition and processing device (not shown in the figure). The SAW temperature sensor 11 is a passive sensor, is combined with an external temperature acquisition and processing device, can measure the temperature of a cable in real time during operation, and belongs to the prior art.
The utility model discloses the during operation, outside temperature acquisition processing apparatus sends wireless radio frequency signal, and SAW temperature sensor 11 excites out the surface acoustic wave in its resonant cavity through the conversion after receiving, and the surface acoustic wave is propagated along the substrate, is reflected by the reflection grating and forms the resonance, and the surface acoustic wave that reflects back converts the signal of telecommunication that carries measured temperature information again through piezoelectric effect, goes out through the antenna radiation, and temperature acquisition processing apparatus receives the signal that has temperature information, obtains the temperature value through measuring this signal frequency or phase change. The temperature change applied to the surface of the SAW temperature sensor 11 can cause the frequency or phase of the reflected signal received wirelessly to change, thereby realizing the wireless monitoring of the temperature.
Wherein, there are several SAW temperature sensors 11, and several SAW temperature sensors 11 are pasted on the cable at intervals. The spacing between the SAW temperature sensors 11 and the number of SAW temperature sensors 11 depends on the requirements for cable temperature monitoring. If only one point is monitored, a SAW temperature sensor is placed; if multiple points are to be monitored, a SAW temperature sensor is placed at each point that needs to be monitored, thereby providing the temperature of the cable at each point in real time as the cable is operated.
The conductor 1 at the center of the cable is formed by stranding and pressing copper single wires, and the cross section of the conductor is circular.
Insulating layer 3 and conductor shielding layer 2 and insulation shielding layer 4 are together, adopt three-layer coextrusion technique shaping outside conductor 1, can effectively improve insulating electric field distribution like this, avoid partial discharge's production, guarantee the life-span of cable, and conductor shielding layer 2 and insulation shielding layer 4 preferred thickness are 1.0 mm.
The isolation sleeve 8 is made of polyvinyl chloride or polyethylene material. To protect the metallic shield 5 from the outer metallic armour layer 9.
The metal armor layer 9 is armored by metal bands or metal wires so as to ensure that the cable has certain compression resistance or tensile resistance.
The sheath layer 10 is a polyvinyl chloride sheath or a polyethylene sheath, and has a protection effect on cable insulation and armor layers.
The utility model discloses in implanting the cable sheath with SAW temperature sensor 11, adopt the temperature when passive sensing technology measuring cable moves, state when the control cable moves guarantees the cable safe operation. The wireless and non-limited wireless measurement device has the characteristics of no limitation in measurement, easiness in installation, no maintenance, high safety degree, low cost, high reliability and high measurement precision.
The above description is only an implementation example of the present invention, and is not a limitation to the protection scope of the present invention. It should be noted that after reading this description, those skilled in the art can make equivalent changes according to the design concept of the present application, which fall within the protection scope of the present application.
Claims (7)
1. The utility model provides a 10kV and above intelligent crosslinked polyethylene insulated power cable which characterized in that: including the conductor, the conductor shielding layer, the insulating layer, the insulation shielding layer, the metallic shield layer, netted filler, the band layer, the separation sleeve, the metal armor, restrictive coating and SAW temperature sensor, the conductor is located the cable center, crowded package has the conductor shielding layer outside the conductor in proper order, insulating layer and insulation shielding layer, the insulating core after the shielding is formed around the package to the metallic shield layer outside the insulation shielding layer, the insulating core transposition is in the same place, it has netted filler to fill in the clearance of transposition, the cladding has the band in proper order on the insulating core of transposition and the netted filler, the separation sleeve, metal armor and restrictive coating, it supplies with outside temperature acquisition processing apparatus wireless connection to post SAW temperature sensor on the cable, SAW temperature sensor is fixed to be set up between metal armor and restrictive coating.
2. The intelligent crosslinked polyethylene insulated power cable of 10kV and above according to claim 1, wherein: the SAW temperature sensors are arranged in a plurality of numbers, and the SAW temperature sensors are attached to the cable at intervals.
3. The intelligent crosslinked polyethylene insulated power cable of 10kV and above according to claim 1, wherein: the conductor is formed by stranding and pressing copper single wires, and the cross section of the conductor is circular.
4. The intelligent crosslinked polyethylene insulated power cable of 10kV and above according to claim 1, wherein: the insulating layer is formed outside the conductor by adopting a three-layer co-extrusion technology together with the conductor shielding layer and the insulating shielding layer, and the thickness of the conductor shielding layer and the insulating shielding layer is 1.0 mm.
5. The intelligent crosslinked polyethylene insulated power cable of 10kV and above according to claim 1, wherein: the isolation sleeve is made of polyvinyl chloride or polyethylene material.
6. The intelligent crosslinked polyethylene insulated power cable of 10kV and above according to claim 1, wherein: the metal armor layer adopts a metal belt or a metal wire.
7. The intelligent crosslinked polyethylene insulated power cable of 10kV and above according to claim 1, wherein: the sheath layer is a polyvinyl chloride sheath or a polyethylene sheath.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020092265.XU CN211294728U (en) | 2020-01-16 | 2020-01-16 | 10kV and above intelligent crosslinked polyethylene insulated power cable |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020092265.XU CN211294728U (en) | 2020-01-16 | 2020-01-16 | 10kV and above intelligent crosslinked polyethylene insulated power cable |
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| Publication Number | Publication Date |
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| CN211294728U true CN211294728U (en) | 2020-08-18 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202020092265.XU Active CN211294728U (en) | 2020-01-16 | 2020-01-16 | 10kV and above intelligent crosslinked polyethylene insulated power cable |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114464355A (en) * | 2022-01-24 | 2022-05-10 | 云南多宝电缆集团股份有限公司 | Network neuron intelligent power cable |
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2020
- 2020-01-16 CN CN202020092265.XU patent/CN211294728U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114464355A (en) * | 2022-01-24 | 2022-05-10 | 云南多宝电缆集团股份有限公司 | Network neuron intelligent power cable |
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