CN201126384Y - Power cable conductor temperature measurement apparatus - Google Patents
Power cable conductor temperature measurement apparatus Download PDFInfo
- Publication number
- CN201126384Y CN201126384Y CNU2007203000174U CN200720300017U CN201126384Y CN 201126384 Y CN201126384 Y CN 201126384Y CN U2007203000174 U CNU2007203000174 U CN U2007203000174U CN 200720300017 U CN200720300017 U CN 200720300017U CN 201126384 Y CN201126384 Y CN 201126384Y
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- China
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- sensor
- power cable
- conductor temperature
- temperature measurement
- cable conductor
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- Expired - Lifetime
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- Measuring Temperature Or Quantity Of Heat (AREA)
Abstract
The utility model relates to a new power cable conductor temperature measuring device comprising a sensor, a signal acquisition unit, a data conditioning unit and a monitoring computer, wherein the output of the sensor is connected with the monitoring computer by the signal acquisition unit and the data conditioning unit, characterized in that the sensor uses needle sensor and a resilience compressing apparatus is mounted above the needle sensor. The conductor temperature of arbitrary parts of the cable are accurately measured at real time base the research requirement and the running state of the cable circuit under different line loads and the conductor temperature are effectively monitored, therefore the scientific and effective technical information can be provided for the actual motion of the cable circuit.
Description
Technical field
The utility model belongs to a kind of temperature measuring equipment, particularly a kind of power cable conductor temperature measurement mechanism.
Background technology
Because the needs of urban construction, newly-built electrical power mains line is abandoned pole line transmission mode in the past usually and adopt the power cable line that directly lays in underground dedicated tunnel or soil in the urban district, with electromagnetic interference (EMI), the floor area of the avoiding trolley wire adverse effect to city planning such as excessive.The existing power cable adopts solid material as the major part that guarantees its electrical insulation properties usually, and its reliability is a most important factor in the power cable.And in actual applications, whether there is close theory relation with its conductor in safety owing to the temperature that produces by load to the insulating property of cable solid material, in the cable industry it this technical field has been carried out scientific research for many years and has explored.In traditional method of testing, usually can only adopt flexible temperature sensor, the cable conductor of cutting open is partly carried out non-directly fixing, there are following deficiency in such test and installation method: 1, cable is dissected and reduced, the structure and the thermal field that have changed cable body distribute, and there are theoretical error in measurement data and original cable; 2, the installation of sensor and fixed effect rely on operating personnel fully, and the reliability of data and repeatability are difficult to guarantee; 3, workload is big, and mounting process is loaded down with trivial details.
Summary of the invention
The purpose of this utility model provide a kind of can minimize change the construction of cable and to inner thermal field distribution influence in, realize accurately measuring the power cable conductor temperature measurement mechanism of conductor temperature, to overcome above-mentioned deficiency fast.
To achieve these goals, the utility model is made of sensor, signal gathering unit, data conditioning unit and supervisory control comuter, wherein the output of sensor is connected with supervisory control comuter with the data conditioning unit by signal gathering unit, be characterized in: sensor adopts pin type sensor, and pin type sensor is provided with hold down of elasticity.
Above-mentioned hold down of elasticity comprises non-Heat Conduction Material flange, hinge, the hook-shaped bolt in end and the butterfly nut that is installed on the pin type sensor, and hinge will be fixed between sensor and the power cable by hook-shaped bolt in end and butterfly nut.Major function is to realize that pin type sensor contacts with tested the tight of conductor part, and the realization compaction forces can be in harmonious proportion device continuously solid and reliable.
Above-mentioned hinge can adopt the single or array configuration of metal hinge, spring, stretch cord, rigidity rope, rubber belt, soft drag-line.
Advantage of the present utility model is can be according to the research needs, conductor temperature to the cable any part carries out accurate measurement in real time, and running status and the conductor temperature of cable line when the different line load effectively monitored, for the actual motion of cable line provides scientific and effective technical information.
Description of drawings
Fig. 1 is the utility model theory diagram.
Fig. 2 is the utility model measure portion structural representation.
Among the figure: 1-cable, 2-sensor, 3-signal gathering unit, 4-data conditioning unit, 5-supervisory control comuter, the non-Heat Conduction Material flange of 6-, 7-encapsulant, 8-pin type sensor temperature probe, 9-pin type sensor signal lead, 10-pin type sensor lead-out terminal, 11-packing material, 12-hinge, the hook-shaped bolt in 13-end, 14-butterfly nut.
Embodiment
Below in conjunction with accompanying drawing the utility model is described in further detail.
The utility model comprises special needle type temperature sensor 2, signal gathering unit 3, and signal condition unit 4 and monitoring computer 5 (Fig. 1) wherein also are provided with hold down of elasticity 6 and top seal material 7 on the special needle type sensor 2.
It is that 0.5 grade industrial T type thermopair is as transducing part that the utility model special needle type temperature sensor 2 adopts precision, the temperature probe 8 of pin type sensor is processed into and installs with the consistent shape of drill bit, measure portion is welded on the sensor tip position, inner signal conductor 9 is through being connected to sensor lead-out terminal 10 at the probe end after the insulation processing, simultaneously for preventing the intensity of sensor internal lead, fill insulant 11 in the shaft-like position of sensor.
The utility model sensor at first uses Φ 3 drill bits to get out a vertical passage to the conductor direction to cable thermometric position when installing, and 2mm～3mm degree of depth is being goed deep into after arriving the conductor position in the drill bit top to the conductor direction.Will be between sensor 2 and the power cable 1 fixing (Fig. 2) behind the cleaning passage with sensor insertion and use hinge 12, the hook-shaped bolt 13 in end and butterfly nut 14, after using top seal material 7 with channel roof and the sealing of sensor connecting portion at last, finish sensor and install.
The utility model pin type sensor 2 can adopt straight type or curved according to actual needs; The transducer wire 9 of pin type sensor 2 can adopt T type or other index type according to actual needs; Flange 6 sizes on the pin type sensor 2, diameter, height equidimension can be adjusted according to actual needs.
After 2 installations of the utility model special needle type sensor, its output signal is connected to corresponding signal gathering unit 3 and signal condition cell signal 4, and the digital signal after will changing is sent to supervisory control comuter 5 by the optical fiber measurement circuit in the signal condition unit 4, realization conductor temperature measurement function.
The content that is not described in detail in this instructions belongs to this area professional and technical personnel's known prior art.
Claims (5)
1, a kind of power cable conductor temperature measurement mechanism, constitute by sensor (2), signal gathering unit (3), data conditioning unit (4) and supervisory control comuter (5), wherein the output of sensor (2) is connected with supervisory control comuter (5) with data conditioning unit (4) by signal gathering unit (3), it is characterized in that: sensor (2) adopts pin type sensor, and pin type sensor (2) is provided with hold down of elasticity.
2, power cable conductor temperature measurement mechanism as claimed in claim 1, it is characterized in that: hold down of elasticity comprises non-Heat Conduction Material flange (6), hinge (12), the hook-shaped bolt in end (13) and the butterfly nut (14) that is installed on the pin type sensor (2), and hinge (12) will be fixed between sensor (2) and the power cable (1) by hook-shaped bolt in end (13) and butterfly nut (14).
3, novel electric power temperature measurement of cable conductor device as claimed in claim 2 is characterized in that: hinge (12) is the single or array configuration of metal hinge, spring, stretch cord, rigidity rope, rubber belt, soft drag-line.
4, power cable conductor temperature measurement mechanism as claimed in claim 1 is characterized in that: pin type sensor (2) adopts straight type or curved.
5, power cable conductor temperature measurement mechanism as claimed in claim 1 is characterized in that: the transducer wire (9) of pin type sensor (2) adopts T type or other index type.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007203000174U CN201126384Y (en) | 2007-12-17 | 2007-12-17 | Power cable conductor temperature measurement apparatus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007203000174U CN201126384Y (en) | 2007-12-17 | 2007-12-17 | Power cable conductor temperature measurement apparatus |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201126384Y true CN201126384Y (en) | 2008-10-01 |
Family
ID=39999852
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2007203000174U Expired - Lifetime CN201126384Y (en) | 2007-12-17 | 2007-12-17 | Power cable conductor temperature measurement apparatus |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201126384Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104634470A (en) * | 2015-02-06 | 2015-05-20 | 华南理工大学 | Method for accurately measuring temperature of cable conductor |
| CN111721801A (en) * | 2020-05-20 | 2020-09-29 | 江苏方天电力技术有限公司 | Heat conduction sensor based on heat conduction gradient |
-
2007
- 2007-12-17 CN CNU2007203000174U patent/CN201126384Y/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104634470A (en) * | 2015-02-06 | 2015-05-20 | 华南理工大学 | Method for accurately measuring temperature of cable conductor |
| CN111721801A (en) * | 2020-05-20 | 2020-09-29 | 江苏方天电力技术有限公司 | Heat conduction sensor based on heat conduction gradient |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| ASS | Succession or assignment of patent right |
Owner name: STATE NETWORK ELECTRIC POWER RESEARCH INSTITUTE Free format text: FORMER OWNER: WUHAN HIGH VOLTAGE RESEARCH INSTITUTE OF STATE GRID Effective date: 20090904 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20090904 Address after: Nanjing City, Jiangsu Province, Nan Shui Road No. 8, zip code: 210003 Co-patentee after: Wuhan Nari Limited Liability Company of State Grid Electric Power Research Institute Patentee after: Power Science Research Institute of national network Address before: Hubei province Wuhan city Hongshan District Luoyu road 143, zip code: 430074 Patentee before: Guowang Wuhan High Voltage Inst |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20160713 Address after: 430074 Hubei city of Wuhan province Wuchang Luo Yu Road, No. 143 Patentee after: Wuhan Nari Limited Liability Company of State Grid Electric Power Research Institute Address before: Nanjing City, Jiangsu Province, 210003 South Shui Road No. 8 Patentee before: State Grid Electric Power Research Insititute Patentee before: Wuhan Nari Limited Liability Company of State Grid Electric Power Research Institute |
|
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20081001 |