CN203673866U - Power cable capable of monitoring operating temperature - Google Patents
Power cable capable of monitoring operating temperature Download PDFInfo
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- CN203673866U CN203673866U CN201420003040.7U CN201420003040U CN203673866U CN 203673866 U CN203673866 U CN 203673866U CN 201420003040 U CN201420003040 U CN 201420003040U CN 203673866 U CN203673866 U CN 203673866U
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- power cable
- operating temperature
- temperature
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Abstract
The utility model relates to the field of cables, and specifically relates to a power cable capable of monitoring the operating temperature. The cable comprises a cable core, an inside liner arranged at the outside of the cable core in a wrapping manner, and an outer sheath extruded at the outside of the inside liner in sequence from the inside to the outside, the cable core comprises a micro temperature-measuring device in the center and more than three conductive core wires surrounding the micro temperature-measuring device, and each conductive core wire comprises an internal conductor and an external insulating layer. According to the power cable, the temperature-measuring device is arranged in a gap between the conductive core wires so that the temperature of the inside of the cable can be detected in real time and accurately, the current condition of the cable can be directly reflected via the monitoring of the temperature, and the power cable has very high practical values especially for controlling a power supply system of an intelligent type electrical network.
Description
Technical field
The utility model relates to field of cables, relates in particular to a kind of power cable of monitoring operating temperature.
Background technology
Power cable (power cable), for transmitting and distribute the cable of electric energy, be usually used in Urban Underground electrical network, power station lead line, industrial and mining enterprises in-line power and cross river, the submarine transmission line in sea excessively.In power circuit, the shared proportion of cable increases just gradually.In the time of cable overload operation, electric cable heating amount can increase, and the body temperature of cable can rise.
Overlond running for a long time, the temperature of cable insulation material exceedes the maximum permissible temperature of normal heating, makes the ageing of insulation of cable withered, and the phenomenon that this ageing of insulation is withered, usually occurs on whole cable line.Because cable insulation is aging withered, insulating material lost or reduce insulation property and mechanical performance, thereby easily puncturing ignition, even burn on fire along the whole length of cable many places simultaneously.If cable excess load is because fault causes, not processed timely again, excessive electric current may cause device damage, causes damage.
Utility model content
The purpose of this utility model is to provide a kind of power cable of monitoring operating temperature, to solve the existing power cable problem of monitoring cable internal temperature in real time.
In order to realize above-mentioned object, adopt following technical scheme: a kind of power cable of monitoring operating temperature, described cable comprises successively from inside to outside cable core, wrapped inner covering outside cable core and is extruded in the oversheath outside inner covering, described cable core comprises the miniature temperature measuring equipment at center and more than three conductive core line around miniature temperature measuring equipment, and described conductive core line comprises inner conductor and outside insulating barrier.In the middle of conductive core line, be provided with miniature temperature measuring equipment, can real-time detect the temperature of cable inside, realize the monitoring to cable operating temperature.
Described cable also comprises inner sheath and armour, and inner sheath is arranged on outside inner covering, and armour is arranged between inner sheath and oversheath.
Described conductive core line also comprises internal shield and the outer shielding layer of semiconductive material, and internal shield is arranged between conductor and insulating barrier, and outer shielding layer is arranged on outside insulating barrier.
Described conductive core line also comprises the copper strip shielding layer outside outer shielding layer.
Described conductor is multicore stranded conductor.
Described miniature temperature measuring equipment is two, between be separated by 10 meters.
Described miniature temperature measuring equipment is Miniature temperature probe and temperature measuring wire, and described temperature measuring wire extends to the termination of cable.
Compared with prior art, the utility model is by being arranged on temperature measuring equipment in the gap between conductive core line, can detect in real time and exactly the temperature of cable inside, by can directly reflect the current conditions of cable to the monitoring of temperature, especially there is very high practical value to controlling the electric power system of intelligent electrical network.
Brief description of the drawings
Fig. 1 is the structural representation of embodiment mono-;
Fig. 2 is the structural representation of embodiment bis-.
Embodiment
Below in conjunction with drawings and Examples, the utility model will be further described.
Embodiment mono-: 0.6/1kV low-voltage cable, structure as shown in Figure 1, comprises conductor 1, insulating barrier 2, miniature temperature measuring equipment 3, inner covering 4 and oversheath 5.
Adopt the production of the 0.6/1kV low-voltage cable of the utility model structure to comprise the following steps:
S1. conductor 1 on frame type stranding machine, carried out according to adjacent opposite direction by many soft copper silks stranded, press moulding, make the shape of conductor 1 reach the requirement of technique, shape has circle, fan-shaped two kinds of structures;
S2. insulating barrier 2 is extruded in outside conductor 1 by crosslinked polyethylene or polyvinyl chloride on plastic extruding machine, and insulating barrier 2 thickness are according to different sectional area thickness differences;
S3. miniature temperature measuring equipment 3 can be selected micro-sheathed thermocouple thermometric product, be applicable to temperature survey and control narrow and small and the bending place of palpus, working temperature is 0-600 DEG C, the requirement that short circuit temperature 250 that completely can appropriate cable is spent, comprise Miniature temperature probe and temperature measuring wire, Miniature temperature probe diameter is 2 millimeters, the diameter of temperature measuring wire is also in 2 millimeter, the stranding space of cable can meet miniature temperature measuring equipment completely, external diameter on cable does not affect, before stranding by temperature measuring wire after-combustion to small line disk, weld the joint that leads, carry out the insulation of joint, insulation will be used resistant to elevated temperatures polytetrafluoroethylene adhesive tape wrapped, guarantee product quality, Miniature temperature probe is connected to outer end, the length of temperature measuring wire will be determined according to the length of cable,
S4. stranded to carrying out stranding on cabler, carry out according to the pitch of technological requirement, different cross-sectional laying up pitch difference;
S5. according to the length requirement of finished cable, in the gap in total length centre position, add 3, two Miniature temperature probes of miniature temperature measuring equipment at a distance of 10 meters, a normal job, one as for subsequent use;
S6. detect the conducting of the temperature measuring wire of miniature temperature measuring equipment 3, guarantee that conducting carries out the work of extruding of the wrapped and oversheath 5 of inner covering 4 after normal, oversheath 5 should adopt low-smoke halogen-free polyolefin material.
User can arrange external record instrument, temp controlled meter, alert control etc. according to different requirements, realizes the monitoring to cable operating temperature.
Embodiment bis-: 3.6/6kV and above cable, structure as shown in Figure 2, comprises conductor 1, internal shield 6, insulating barrier 2, outer shielding layer 7, copper strip shielding layer 8, miniature temperature measuring equipment 3, inner covering 4, inner sheath 9, armour 10 and oversheath 5.
Adopt the 3.6/6kV of the utility model structure and the production of above cable to comprise the following steps:
S1. conductor 1 on frame type stranding machine, carried out according to adjacent opposite direction by many soft copper silks stranded, press moulding, make conductor 1 for circular configuration;
S2. internal shield 6, insulating barrier 2 and outer shielding layer 7 once extrusion molding on three-layer co-extruded cross-linking machine, thickness is according to different sectional area thickness differences;
S3. on shield machine, carry out copper strip shielding layer 8 wrapped, then pass through partial discharge test and withstand voltage test;
S4. miniature temperature measuring equipment 3 can be selected micro-sheathed thermocouple thermometric product, before stranding by temperature measuring wire after-combustion to small line disk, weld the joint that leads, carry out the insulation of joint, insulation will be used resistant to elevated temperatures polytetrafluoroethylene adhesive tape wrapped, guarantee product quality, Miniature temperature probe is connected to outer end, the length of temperature measuring wire will be determined according to the length of cable;
S5. stranded to carrying out stranding on cabler, carry out according to the pitch of technological requirement, different cross-sectional laying up pitch difference;
S6. according to the length requirement of finished cable, in the gap in total length centre position, add 3, two Miniature temperature probes of miniature temperature measuring equipment at a distance of 10 meters, a normal job, one as for subsequent use;
S7. detect the conducting of the temperature measuring wire of miniature temperature measuring equipment 3, guarantee that conducting carries out the processing work of inner covering 4, inner sheath 9, armour 10, oversheath 5 after normal, inner sheath 9 and oversheath 5 adopt flame retardant type PVC or low smoke and zero halogen sheath material.
User can arrange external record instrument, temp controlled meter, alert control etc. according to different requirements, realizes the monitoring to cable operating temperature.
The above is only preferred embodiment of the present utility model.Should be understood that for member of ordinary skill in the art, under technology enlightenment provided by the utility model, can also make other equivalent modifications or improvement, also should be considered as protection range of the present utility model.
Claims (7)
1. monitor the power cable of operating temperature for one kind, it is characterized in that, described cable comprises successively from inside to outside cable core, wrapped inner covering outside cable core and is extruded in the oversheath outside inner covering, described cable core comprises the miniature temperature measuring equipment at center and more than three conductive core line around miniature temperature measuring equipment, and described conductive core line comprises inner conductor and outside insulating barrier.
2. the power cable of monitoring operating temperature according to claim 1, is characterized in that, described cable also comprises inner sheath and armour, and inner sheath is arranged on outside inner covering, and armour is arranged between inner sheath and oversheath.
3. the power cable of monitoring operating temperature according to claim 1, is characterized in that, described conductive core line also comprises internal shield and the outer shielding layer of semiconductive material, and internal shield is arranged between conductor and insulating barrier, and outer shielding layer is arranged on outside insulating barrier.
4. the power cable of monitoring operating temperature according to claim 2, is characterized in that, described conductive core line also comprises the copper strip shielding layer outside outer shielding layer.
5. according to the power cable of the monitoring operating temperature described in any one in claim 2 to 4, it is characterized in that, described conductor is multicore stranded conductor.
6. the power cable of monitoring operating temperature according to claim 1, is characterized in that, described miniature temperature measuring equipment is two, between be separated by 10 meters.
7. the power cable of monitoring operating temperature according to claim 6, is characterized in that, described miniature temperature measuring equipment is Miniature temperature probe and temperature measuring wire, and described temperature measuring wire extends to the termination of cable.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420003040.7U CN203673866U (en) | 2014-01-03 | 2014-01-03 | Power cable capable of monitoring operating temperature |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420003040.7U CN203673866U (en) | 2014-01-03 | 2014-01-03 | Power cable capable of monitoring operating temperature |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203673866U true CN203673866U (en) | 2014-06-25 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420003040.7U Expired - Fee Related CN203673866U (en) | 2014-01-03 | 2014-01-03 | Power cable capable of monitoring operating temperature |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203673866U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104464942A (en) * | 2014-12-05 | 2015-03-25 | 东南（福建）汽车工业有限公司 | Temperature monitorable high-voltage harness |
| CN104880623A (en) * | 2015-04-21 | 2015-09-02 | 北京天诚同创电气有限公司 | Current-sharing power transmission detection method and device for in-phase parallel power transmission system |
-
2014
- 2014-01-03 CN CN201420003040.7U patent/CN203673866U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104464942A (en) * | 2014-12-05 | 2015-03-25 | 东南（福建）汽车工业有限公司 | Temperature monitorable high-voltage harness |
| CN104880623A (en) * | 2015-04-21 | 2015-09-02 | 北京天诚同创电气有限公司 | Current-sharing power transmission detection method and device for in-phase parallel power transmission system |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140625 Termination date: 20170103 |