CN111707392A - Intelligent cable intermediate head temperature measurement system - Google Patents
Intelligent cable intermediate head temperature measurement system Download PDFInfo
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- CN111707392A CN111707392A CN202010485226.0A CN202010485226A CN111707392A CN 111707392 A CN111707392 A CN 111707392A CN 202010485226 A CN202010485226 A CN 202010485226A CN 111707392 A CN111707392 A CN 111707392A
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- cable
- joint
- measurement system
- temperature measurement
- heat dissipation
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01K—MEASURING TEMPERATURE; MEASURING QUANTITY OF HEAT; THERMALLY-SENSITIVE ELEMENTS NOT OTHERWISE PROVIDED FOR
- G01K11/00—Measuring temperature based upon physical or chemical changes not covered by groups G01K3/00, G01K5/00, G01K7/00 or G01K9/00
- G01K11/22—Measuring temperature based upon physical or chemical changes not covered by groups G01K3/00, G01K5/00, G01K7/00 or G01K9/00 using measurement of acoustic effects
- G01K11/26—Measuring temperature based upon physical or chemical changes not covered by groups G01K3/00, G01K5/00, G01K7/00 or G01K9/00 using measurement of acoustic effects of resonant frequencies
- G01K11/265—Measuring temperature based upon physical or chemical changes not covered by groups G01K3/00, G01K5/00, G01K7/00 or G01K9/00 using measurement of acoustic effects of resonant frequencies using surface acoustic wave [SAW]
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01K—MEASURING TEMPERATURE; MEASURING QUANTITY OF HEAT; THERMALLY-SENSITIVE ELEMENTS NOT OTHERWISE PROVIDED FOR
- G01K13/00—Thermometers specially adapted for specific purposes
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- General Physics & Mathematics (AREA)
- Acoustics & Sound (AREA)
- Measuring Temperature Or Quantity Of Heat (AREA)
- Arrangements For Transmission Of Measured Signals (AREA)
Abstract
The invention discloses an intelligent cable middle joint temperature measuring system which comprises a first cable end and a second cable end, wherein a cable middle female joint is sleeved at the right end of the first cable end, a cable middle sub-joint is sleeved at the left end of the second cable end, the first cable end is connected with the cable middle sub-joint of the second cable end through the cable middle female joint, an inner insulating layer is coated at the joint of the cable middle female joint and the cable middle sub-joint, an aluminum heat dissipation layer is fixedly bonded on the outer surface of the inner insulating layer, a temperature measuring device is fixedly bonded on the outer surface of the aluminum heat dissipation layer, and the temperature measuring device comprises a wireless passive flexible film temperature sensor, a signal transceiving unit, a controller and a liquid crystal display. Above-mentioned technical scheme, structural design is reasonable, connect reliable, difficult not hard up between two cable ends, long service life and practicality are good.
Description
Technical Field
The invention relates to the technical field of cable joint temperature measurement, in particular to an intelligent cable intermediate joint temperature measurement system.
Background
Along with the continuous promotion of electrical equipment voltage level and the continuous increase of operating current, the equipment phenomenon of generating heat is showing more and more, when power equipment breaks down, often along with the change of temperature, so through the temperature monitoring to power equipment, especially its key position, can in time know power equipment's operating condition. When the temperature is abnormal, early warning can be timely given and the maintenance can be carried out, so that larger faults can be prevented.
For temperature monitoring of the cable intermediate head, it is required to be able to directly monitor the temperature of the core conductor. To meet this requirement, the following difficulties are mainly encountered: the internal space of the cable intermediate joint is extremely narrow, which has high requirements on the size of the sensor; the interior of the cable intermediate joint is in a strong electromagnetic field environment, and the sensor is required to be capable of stably operating under the working condition; devices placed in the middle joint of the cable cannot influence the electric field distribution in the middle joint, otherwise, the failure of the original structural design of the cable joint can be caused, and potential safety hazards are caused; the service life of the cable joint is generally 30 years, so the service life of the built-in temperature measuring device cannot be less than 30 years.
PCT patent CN105190268A, a system for monitoring the temperature of an electrical conductor enclosed in at least a (semi-) conductive layer. The system comprises: a wireless passive sensing unit, a transceiver unit and a control unit. The wireless passive sensing unit includes at least one temperature sensing part and is configured to have a resonance frequency and/or a Q value that varies with a temperature of the conductive body. The transceiver unit is configured to electromagnetically couple to the wireless passive inductive unit and emit a signal indicative of a resonant frequency and/or a Q value of the wireless passive inductive unit. The transceiver unit is further configured to communicate with a control unit that ascertains a signal indicative of one or both of the resonant frequency and the Q value, and determines a temperature value for the electrical conductor based on the ascertained signal indicative of one or both of the resonant frequency and the Q value. The sensor described in this patent is located between the connecting copper tube and the insulating layer, and the outer diameter size needs to be completely matched with the size of the cable insulating layer to meet the electrical performance requirement.
However, the above technical scheme can only be applied to cable intermediate connectors with large internal space and specific dimensions such as 110kV, when cable connectors of different models and manufacturers need to be adapted, special design is required, the application range is small, and the two cable ends are unreliable in connection and easy to loosen, so that the service life is short, and the practicability is poor.
Disclosure of Invention
Aiming at the defects in the prior art, the invention aims to provide the intelligent cable intermediate joint temperature measuring system which is reasonable in structural design, reliable in connection between two cable ends, not easy to loosen, wide in application range and good in practicability.
In order to achieve the purpose, the invention provides the following technical scheme: an intelligent cable intermediate head temperature measurement system comprises a first cable end and a second cable end, wherein a cable intermediate female joint is sleeved at the right end of the first cable end, a cable intermediate male joint is sleeved at the left end of the second cable end, the first cable end is connected with the cable intermediate male joint of the second cable end through the cable intermediate female joint, an inner insulating layer is wrapped at the joint of the cable intermediate female joint and the cable intermediate male joint, an aluminum heat dissipation layer is fixedly bonded on the outer surface of the inner insulating layer, a temperature measurement device is fixedly bonded on the outer surface of the aluminum heat dissipation layer and comprises a wireless passive flexible film temperature sensor, a signal receiving and transmitting unit, a controller and a liquid crystal display, when the temperature measurement device is used for measuring the temperature, the controller controls the signal receiving and transmitting unit to transmit detection signals, the wireless passive flexible film temperature sensor sends a feedback signal according to the detection signal, the signal receiving and sending unit receives the feedback signal and transmits the signal to the controller, the controller obtains the temperature of the aluminum heat dissipation layer according to the feedback signal transmitted by the signal receiving and sending unit, and the controller controls the liquid crystal display to display the temperature of the aluminum heat dissipation layer; the thickness of the aluminum heat dissipation layer is 0.1-1.5 mm.
By adopting the technical scheme, the first cable end is connected with the cable middle sub-joint of the second cable end through the cable middle female joint, and the two cable ends are reliably connected and are not easy to loosen; the aluminum heat dissipation layer has a heat dissipation function on the joint of the cable middle female joint and the cable middle sub-joint, and the heat dissipation performance is good, so that the service life of each part is long; adopt wireless passive flexible film temperature sensor no longer need change self structure according to the size of conductor connecting pipe inner space, only need wind establish fixedly, have better adaptability to the cable joint of the different models of different producers, application scope is wide, and the practicality is good.
The invention is further configured to: the middle female joint of the cable comprises a first insulating sleeve, a first conductor connecting sleeve is arranged at the right end of the inner surface of an inner hole of the first insulating sleeve, a first cable jack is arranged in the first conductor connecting sleeve, and a first connecting slot is formed in the right end of the first cable jack.
The invention is further configured to: the cable middle sub-joint comprises a second insulating sleeve, a second conductor connecting sleeve is arranged at the left end of the inner surface of an inner hole of the second insulating sleeve, a second cable jack is arranged in the second conductor connecting sleeve, and the left end of the second conductor connecting sleeve is inserted into the first connecting slot.
The invention is further configured to: after the left end of the second conductor connecting sleeve is inserted into the first connecting slot, an annular groove is formed between the right end face of the first insulating sleeve and the left end face of the second insulating sleeve, and the inner insulating layer is located in the annular groove.
The invention is further configured to: the first cable jack and the second cable jack are circular through holes, axial center lines of the first cable jack and the second cable jack are overlapped, and the diameters of the first cable jack and the second cable jack are the same.
The invention is further configured to: the signal receiving and transmitting unit comprises a collector and a reader, the reader is electrically connected with the collector and used for sending detection signals and receiving feedback signals, and the collector is used for transmitting the feedback signals received by the reader to the controller.
The invention is further configured to: and the connecting lead of the controller is electrically connected with the signal transceiving unit.
The invention is further configured to: the wireless passive flexible film temperature sensor comprises a sensor body and a protective layer, wherein the protective layer is coated outside the sensor body.
The invention is further configured to: the wireless passive flexible film temperature sensor comprises an SAW temperature sensor, wherein the SAW temperature sensor comprises a substrate, an interdigital transducer, a reflecting grating and a receiving and transmitting antenna, the interdigital transducer is arranged on the substrate, and the receiving and transmitting antenna is connected with the interdigital transducer.
The invention is further configured to: the sensor body comprises an LC circuit, the LC circuit comprises a capacitor and an induction coil which are connected in series to form a loop, and the induction coil is spirally arranged in a plane.
The invention has the advantages that: compared with the prior art, the cable joint is more reasonable in structural arrangement, the first cable end is connected with the cable middle sub-joint of the second cable end through the cable middle female joint, and the two cable ends are reliably connected and are not easy to loosen; the aluminum heat dissipation layer has a heat dissipation function on the joint of the cable middle female joint and the cable middle sub-joint, and the heat dissipation performance is good, so that the service life of each part is long; adopt wireless passive flexible film temperature sensor no longer need change self structure according to the size of conductor connecting pipe inner space, only need wind establish fixedly, have better adaptability to the cable joint of the different models of different producers, application scope is wide, and the practicality is good.
The invention is further described with reference to the drawings and the specific embodiments in the following description.
Drawings
FIG. 1 is a schematic structural diagram of an embodiment of the present invention;
FIG. 2 is an enlarged view of section I of FIG. 1;
FIG. 3 is a schematic structural view of an intermediate female joint according to an embodiment of the present invention;
fig. 4 is a schematic structural diagram of a cable intermediate sub-joint according to an embodiment of the present invention.
Detailed Description
In the description of the present embodiment, it should be noted that, as the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", "front", "rear", etc. appear, their indicated orientations or positional relationships are based on those shown in the drawings, and are only for convenience of describing the present invention and simplifying the description, but do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" as appearing herein are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
Referring to fig. 1, 2, 3 and 4, the intelligent cable intermediate joint temperature measurement system disclosed by the invention comprises a first cable end 1 and a second cable end 2, wherein a cable intermediate female joint 3 is sleeved at the right end of the first cable end 1, a cable intermediate male joint 4 is sleeved at the left end of the second cable end 2, the first cable end 1 is connected with the cable intermediate male joint 4 of the second cable end 2 through the cable intermediate female joint 3, an inner insulating layer 5 is coated at the joint of the cable intermediate female joint 3 and the cable intermediate male joint 4, an aluminum heat dissipation layer 6 is fixedly bonded on the outer surface of the inner insulating layer 5, a temperature measurement device is fixedly bonded on the outer surface of the aluminum heat dissipation layer 6, the temperature measurement device comprises a wireless passive flexible film temperature sensor 7, a signal transceiving unit 8, a controller 9 and a liquid crystal display 10, when the temperature measuring device is used for measuring the temperature, the controller 9 controls the signal receiving and sending unit 8 to send a detection signal, the wireless passive flexible film temperature sensor 7 sends a feedback signal according to the detection signal, the signal receiving and sending unit 8 receives the feedback signal and transmits the signal to the controller 9, the controller 9 obtains the temperature of the aluminum heat dissipation layer 6 according to the feedback signal transmitted by the signal receiving and sending unit 8, and the controller 9 controls the liquid crystal display 10 to display the temperature of the aluminum heat dissipation layer 6; the thickness of the aluminum heat dissipation layer 6 is 0.1-1.5 mm.
Preferably, the intermediate cable female joint 3 includes a first insulating sleeve 31, a first conductor connecting sleeve 32 is disposed at the right end of the inner surface of the inner hole of the first insulating sleeve 31, a first cable inserting hole 321 is disposed in the first conductor connecting sleeve 32, and a first connecting inserting groove 322 is disposed at the right end of the first cable inserting hole 321.
The cable middle sub-joint 4 comprises a second insulating sleeve 41, a second conductor connecting sleeve 42 is arranged at the left end of the inner surface of the inner hole of the second insulating sleeve 41, a second cable jack 421 is arranged in the second conductor connecting sleeve 42, and the left end of the second conductor connecting sleeve 42 is inserted into the first connecting slot 322.
The first insulating sleeve 31 and the first conductor connecting sleeve 32 form an integral structure after being bonded and fixed; the second insulating sleeve 41 and the second conductor connecting sleeve 42 form an integral structure after being bonded and fixed.
When the left end of the second conductor connecting sleeve 42 is inserted into the first connecting slot 322, an annular groove is formed between the right end surface of the first insulating sleeve 31 and the left end surface of the second insulating sleeve 41, and the inner insulating layer 5 is located in the annular groove.
The first cable jack 321 and the second cable jack 421 are circular through holes, axial center lines of the first cable jack 321 and the second cable jack 421 are overlapped, and diameters of the first cable jack 321 and the second cable jack 421 are the same.
The signal transceiving unit 8 comprises a collector and a reader, the reader is electrically connected with the collector, the reader is used for sending detection signals and receiving feedback signals, and the collector is used for transmitting the feedback signals received by the reader to the controller 9.
The connecting wire of the controller 9 is electrically connected with the signal transceiving unit 8. Preferably, the controller 9 is electrically connected to the liquid crystal display 10 through an existing wire.
The wireless passive flexible film temperature sensor 7 comprises a sensor body and a protective layer, wherein the protective layer is coated outside the sensor body.
Wireless passive flexible film temperature sensor 7 includes SAW temperature sensor, SAW temperature sensor includes base plate, interdigital transducer, reflection bars and receiving and dispatching antenna, the interdigital transducer the reflection bars set up in on the base plate, receiving and dispatching antenna with the interdigital transducer links to each other.
The sensor body comprises an LC circuit, the LC circuit comprises a capacitor and an induction coil which are connected in series to form a loop, and the induction coil is spirally arranged in a plane.
In practical application, the first cable end is connected with the cable middle sub-joint of the second cable end through the cable middle female joint, and the two cable ends are reliably connected and are not easy to loosen; the aluminum heat dissipation layer has a heat dissipation function on the joint of the cable middle female joint and the cable middle sub-joint, and the heat dissipation performance is good, so that the service life of each part is long; adopt wireless passive flexible film temperature sensor no longer need change self structure according to the size of conductor connecting pipe inner space, only need wind establish fixedly, have better adaptability to the cable joint of the different models of different producers, application scope is wide, and the practicality is good.
The above embodiments are described in detail for the purpose of further illustrating the present invention and should not be construed as limiting the scope of the present invention, and the skilled engineer can make insubstantial modifications and variations of the present invention based on the above disclosure.
Claims (10)
1. The utility model provides an intelligence cable intermediate head temperature measurement system, includes first cable end and second cable end, its characterized in that: the right end of the first cable end is sleeved with a cable middle female joint, the left end of the second cable end is sleeved with a cable middle sub-joint, the first cable end is connected with the cable middle sub-joint of the second cable end through the cable middle female joint, the joint of the cable middle female joint and the cable middle sub-joint is wrapped with an inner insulating layer, the outer surface of the inner insulating layer is fixedly bonded with an aluminum heat dissipation layer, the outer surface of the aluminum heat dissipation layer is fixedly bonded with a temperature measuring device, the temperature measuring device comprises a wireless passive flexible film temperature sensor, a signal transceiving unit, a controller and a liquid crystal display, when the temperature measuring device measures temperature, the controller controls the signal transceiving unit to send a detection signal, the wireless passive flexible film temperature sensor sends a feedback signal according to the detection signal, and the signal transceiving unit receives the feedback signal, the signal is transmitted to a controller, the controller obtains the temperature of the aluminum heat dissipation layer according to the feedback signal transmitted by the signal receiving and transmitting unit, and the controller controls the liquid crystal display to display the temperature of the aluminum heat dissipation layer; the thickness of the aluminum heat dissipation layer is 0.1-1.5 mm.
2. The intelligent cable intermediate joint temperature measurement system of claim 1, wherein: the middle female joint of the cable comprises a first insulating sleeve, a first conductor connecting sleeve is arranged at the right end of the inner surface of an inner hole of the first insulating sleeve, a first cable jack is arranged in the first conductor connecting sleeve, and a first connecting slot is formed in the right end of the first cable jack.
3. An intelligent cable intermediate joint temperature measurement system according to claim 2, wherein: the cable middle sub-joint comprises a second insulating sleeve, a second conductor connecting sleeve is arranged at the left end of the inner surface of an inner hole of the second insulating sleeve, a second cable jack is arranged in the second conductor connecting sleeve, and the left end of the second conductor connecting sleeve is inserted into the first connecting slot.
4. An intelligent cable intermediate joint temperature measurement system according to claim 3, wherein: after the left end of the second conductor connecting sleeve is inserted into the first connecting slot, an annular groove is formed between the right end face of the first insulating sleeve and the left end face of the second insulating sleeve, and the inner insulating layer is located in the annular groove.
5. An intelligent cable intermediate joint temperature measurement system according to claim 4, wherein: the first cable jack and the second cable jack are circular through holes, axial center lines of the first cable jack and the second cable jack are overlapped, and the diameters of the first cable jack and the second cable jack are the same.
6. The intelligent cable intermediate joint temperature measurement system of claim 1, wherein: the signal receiving and transmitting unit comprises a collector and a reader, the reader is electrically connected with the collector and used for sending detection signals and receiving feedback signals, and the collector is used for transmitting the feedback signals received by the reader to the controller.
7. The intelligent cable intermediate joint temperature measurement system of claim 1, wherein: and the connecting lead of the controller is electrically connected with the signal transceiving unit.
8. The intelligent cable intermediate joint temperature measurement system of claim 1, wherein: the wireless passive flexible film temperature sensor comprises a sensor body and a protective layer, wherein the protective layer is coated outside the sensor body.
9. The intelligent cable intermediate joint temperature measurement system of claim 1, wherein: the wireless passive flexible film temperature sensor comprises an SAW temperature sensor, wherein the SAW temperature sensor comprises a substrate, an interdigital transducer, a reflecting grating and a receiving and transmitting antenna, the interdigital transducer is arranged on the substrate, and the receiving and transmitting antenna is connected with the interdigital transducer.
10. The intelligent cable intermediate joint temperature measurement system of claim 1, wherein: the sensor body comprises an LC circuit, the LC circuit comprises a capacitor and an induction coil which are connected in series to form a loop, and the induction coil is spirally arranged in a plane.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010485226.0A CN111707392B (en) | 2020-06-01 | 2020-06-01 | Intelligent cable intermediate head temperature measurement system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010485226.0A CN111707392B (en) | 2020-06-01 | 2020-06-01 | Intelligent cable intermediate head temperature measurement system |
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| CN111707392A true CN111707392A (en) | 2020-09-25 |
| CN111707392B CN111707392B (en) | 2022-03-22 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113932946A (en) * | 2021-10-08 | 2022-01-14 | 江苏依卡维电子科技有限公司 | Overheat state electronic monitoring system of high-voltage cable connector |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4822952A (en) * | 1985-08-21 | 1989-04-18 | Cable Technology Laboratories, Inc. | Electrical cable joint and electrical cable termination and methods of making same |
| CN206095461U (en) * | 2016-09-27 | 2017-04-12 | 广东电网有限责任公司珠海供电局 | Cable joint temperature measurement system |
| CN206430821U (en) * | 2016-09-20 | 2017-08-22 | 南京科睿博电气科技有限公司 | A kind of passive and wireless temperature measurement system applied to HV cable accessories |
| CN108962475A (en) * | 2018-08-20 | 2018-12-07 | 安徽新科电缆集团股份有限公司 | A kind of anticorrosion fire safe type cable |
| CN110261001A (en) * | 2019-06-28 | 2019-09-20 | 浙江荷清柔性电子技术有限公司 | Cable intermediate joint temperature measurement system |
| CN110504593A (en) * | 2019-09-16 | 2019-11-26 | 安徽三竹智能科技股份有限公司 | A kind of intelligent temperature measurement Separable cable connector |
-
2020
- 2020-06-01 CN CN202010485226.0A patent/CN111707392B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4822952A (en) * | 1985-08-21 | 1989-04-18 | Cable Technology Laboratories, Inc. | Electrical cable joint and electrical cable termination and methods of making same |
| CN206430821U (en) * | 2016-09-20 | 2017-08-22 | 南京科睿博电气科技有限公司 | A kind of passive and wireless temperature measurement system applied to HV cable accessories |
| CN206095461U (en) * | 2016-09-27 | 2017-04-12 | 广东电网有限责任公司珠海供电局 | Cable joint temperature measurement system |
| CN108962475A (en) * | 2018-08-20 | 2018-12-07 | 安徽新科电缆集团股份有限公司 | A kind of anticorrosion fire safe type cable |
| CN110261001A (en) * | 2019-06-28 | 2019-09-20 | 浙江荷清柔性电子技术有限公司 | Cable intermediate joint temperature measurement system |
| CN110504593A (en) * | 2019-09-16 | 2019-11-26 | 安徽三竹智能科技股份有限公司 | A kind of intelligent temperature measurement Separable cable connector |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113932946A (en) * | 2021-10-08 | 2022-01-14 | 江苏依卡维电子科技有限公司 | Overheat state electronic monitoring system of high-voltage cable connector |
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Effective date of registration: 20201229 Address after: 310052 building B, 701 Jianghui Road, Binjiang District, Hangzhou City, Zhejiang Province Applicant after: Innovation and entrepreneurship center of State Grid Zhejiang Electric Power Co.,Ltd. Applicant after: STATE GRID ZHEJIANG ELECTRIC POWER CO., LTD. NINGBO POWER SUPPLY Co. Applicant after: State Grid Zhejiang Electric Power Co., Ltd. Ningbo Zhenhai Power Supply Co. Address before: 315000 No. 1408 Liyuan North Road, Haishu District, Ningbo City, Zhejiang Province Applicant before: STATE GRID ZHEJIANG ELECTRIC POWER CO., LTD. NINGBO POWER SUPPLY Co. Applicant before: State Grid Zhejiang Electric Power Co., Ltd. Ningbo Zhenhai Power Supply Co. |
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