CN110261001A - Cable intermediate joint temperature measurement system - Google Patents
Cable intermediate joint temperature measurement system Download PDFInfo
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- CN110261001A CN110261001A CN201910578950.5A CN201910578950A CN110261001A CN 110261001 A CN110261001 A CN 110261001A CN 201910578950 A CN201910578950 A CN 201910578950A CN 110261001 A CN110261001 A CN 110261001A
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- Prior art keywords
- measurement system
- intermediate joint
- temperature measurement
- cable intermediate
- wireless
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Classifications
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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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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
- H01R11/00—Individual connecting elements providing two or more spaced connecting locations for conductive members which are, or may be, thereby interconnected, e.g. end pieces for wires or cables supported by the wire or cable and having means for facilitating electrical connection to some other wire, terminal, or conductive member, blocks of binding posts
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
- H01R11/00—Individual connecting elements providing two or more spaced connecting locations for conductive members which are, or may be, thereby interconnected, e.g. end pieces for wires or cables supported by the wire or cable and having means for facilitating electrical connection to some other wire, terminal, or conductive member, blocks of binding posts
- H01R11/01—Individual connecting elements providing two or more spaced connecting locations for conductive members which are, or may be, thereby interconnected, e.g. end pieces for wires or cables supported by the wire or cable and having means for facilitating electrical connection to some other wire, terminal, or conductive member, blocks of binding posts characterised by the form or arrangement of the conductive interconnection between the connecting locations
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
- H01R11/00—Individual connecting elements providing two or more spaced connecting locations for conductive members which are, or may be, thereby interconnected, e.g. end pieces for wires or cables supported by the wire or cable and having means for facilitating electrical connection to some other wire, terminal, or conductive member, blocks of binding posts
- H01R11/03—Individual connecting elements providing two or more spaced connecting locations for conductive members which are, or may be, thereby interconnected, e.g. end pieces for wires or cables supported by the wire or cable and having means for facilitating electrical connection to some other wire, terminal, or conductive member, blocks of binding posts characterised by the relationship between the connecting locations
- H01R11/09—Individual connecting elements providing two or more spaced connecting locations for conductive members which are, or may be, thereby interconnected, e.g. end pieces for wires or cables supported by the wire or cable and having means for facilitating electrical connection to some other wire, terminal, or conductive member, blocks of binding posts characterised by the relationship between the connecting locations the connecting locations being identical
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
- H01R2201/00—Connectors or connections adapted for particular applications
- H01R2201/20—Connectors or connections adapted for particular applications for testing or measuring purposes
Abstract
Cable intermediate joint temperature measurement system includes wireless and passive fexible film temperature sensor and signal transmitting and receiving unit, wireless and passive fexible film temperature sensor is set around outside conductor connecting tube, and it is located between inner insulating layer and conductor connecting tube, when temperature measurement system carries out temperature measurement, controller control signal Transmit-Receive Unit sends detectable signal, wireless and passive fexible film temperature sensor sends feedback signal according to detectable signal, signal transmitting and receiving unit receives feedback signal, and the signal is transferred to controller, controller obtains the temperature of cable intermediate joint according to the feedback signal that signal transmitting and receiving unit transmits, and the temperature information is transferred to background control center.The cable intermediate joint temperature measurement system can may have good adaptability to the cable connector of various models, and install simply, and cost is relatively low.
Description
Technical field
The present invention relates to field of temperature measurement, especially a kind of cable intermediate joint temperature measurement system.
Background technique
With the continuous promotion of electrical equipment voltage class and continuing to increase for operating current, equipment heating phenomenon is more aobvious
It writes, when power equipment breaks down, is usually associated with the variation of temperature, so especially it is crucial by power equipment
The monitoring temperature at position can understand the working condition of power equipment in time.When temperature occurs abnormal, then can make in time
Early warning is simultaneously overhauled, and can prevent the generation of more major break down in this way.
For the temperature monitoring of cable mid head, it is desirable that can directly monitor the temperature of core conductor.Reach this to want
It asks, mainly have following difficulty: the inner space of cable intermediate joint is extremely narrow, this requires the size of sensor very high；Electricity
It is in strong-electromagnetic field environment inside cable transition joint, needs sensor being capable of stable operation under this working condition；It is placed in cable
Device inside transition joint cannot impact the field distribution inside transition joint, otherwise cable connector can be caused original
The failure of structure design, to cause security risk；The service life of cable connector is generally 30 years, so built-in temperature measuring device
Service life cannot be below 30 years.
PCT Patent CN105190268A, one kind being enclosed at least (partly) temperature of the electric conductor in conductive layer for monitoring
System.The system includes: wireless and passive sensing unit and transceiver unit and control unit.Wireless and passive sensing unit packet
At least one temperature sense component is included, and is configured to resonance frequency and/or Q value with the temperature change with electric conductor.
Transceiver unit is configured to electromagnetism and is couple to wireless and passive sensing unit, and issues the humorous of expression wireless and passive sensing unit
The signal of vibration frequency and/or Q value.Transceiver unit is further constructed to communicate with control unit, which finds out table
Show the signal of resonance frequency and the one or both in Q value, and based on one in the expression resonance frequency and Q value found out
A or both signal determines the temperature value of electric conductor.Sensor described in the patent between connecting copper pipe and insulating layer,
Outer diameter needs to exactly match with cable insulation size, gets to electrical performance demands.
This, which results in the technical solution, may be only available in the cables of specific dimensions such as the biggish 110kV in inner space indirectly
Head then needs to carry out special design, increases the popularization of product when needing to be adapted to the cable connector of different model and producer
It is applicable in difficulty.
Summary of the invention
In view of this, the present invention provides a kind of cable intermediate joint temperature measurement system, the cable intermediate joint temperature
Measuring system can may have good adaptability to the cable connector of various models, and install simply, and cost is relatively low.
The present invention provides a kind of cable intermediate joint temperature measurement system, which includes two institutes of connection
The conductor connecting tube for stating cable socket, the inner insulating layer being coated on outside the conductor connecting tube are coated on outside the inner insulating layer
External insulation layer, and the shell being coated on outside external insulation layer, the temperature measurement system include wireless and passive fexible film temperature
Sensor and signal transmitting and receiving unit and controller are spent, the wireless and passive fexible film temperature sensor is set around the conductor and connects
Adapter tube is outer, and is located between the inner insulating layer and the conductor connecting tube, when the temperature measurement system carries out temperature survey
When amount, the controller controls the signal transmitting and receiving unit and sends detectable signal, the wireless and passive fexible film temperature sensing
Device sends feedback signal according to the detectable signal, and the signal transmitting and receiving unit receives the feedback signal, and the signal is passed
It is handed to the controller, the controller obtains in the cable indirectly according to the feedback signal that the signal transmitting and receiving unit transmits
The temperature of head.
The signal transmitting and receiving unit includes collector and reader, the reader be set to the inner insulating layer with it is described
Between external insulation layer.
The controller is set to outside the shell, and connecting wire passes through the shell and is electrically connected at the controller
Between the signal transmitting and receiving unit.
The reader is electrical connected with the collector, transmission and feedback letter of the reader for detectable signal
Number collect, the collector is used to the feedback signal that the reader receives being transferred to the controller.
The wireless and passive fexible film temperature sensor includes sensor body and protective layer, and the protective layer is coated on
Outside the sensor body.
The wireless and passive fexible film temperature sensor is in the form of sheets or cylindric.
The sensor body includes SAW temperature sensor, the SAW temperature sensor include substrate, interdigital transducer,
Reflecting grating and dual-mode antenna, the interdigital transducer, the reflecting grating are set on the substrate, the dual-mode antenna with
The interdigital transducer is connected.
The sensor body includes microwave cavity, and the microwave cavity includes the first metal patch, the second metal
Patch and the first medium layer being located between first metal patch and the second metal patch.
The first medium layer is formed by temperature sensing material, and the change rate of dielectric constant with temperature is 0.05%/DEG C-
10%/DEG C, Young's modulus 1.5Gpa-150Gpa, dielectric constant range is 1-100.
The sensor body includes lc circuit, and the lc circuit includes the capacitor and induction coil for being connected into circuit.
The induction coil is laid in snail shape, and the capacitor is set in the snail shape induction coil
Extending direction phase of the plane where with the wireless and passive fexible film temperature sensor at the heart, where the pole plate of the capacitor
It is mutually parallel.
The induction coil of the lc circuit is set around on the cylindric wireless and passive fexible film temperature sensor, institute
Capacitor is stated removably to be connected with the induction coil.
It is additionally provided with second dielectric layer between two pole plates of the capacitor, the second dielectric layer is by temperature sensitive
Dielectric substance is formed.
The change rate of the dielectric constant with temperature of the second dielectric layer is 0.05%/DEG C -10%/DEG C, Young's modulus
For 1.5Gpa-150Gpa, dielectric constant range is 1-100.
The temperature sensing material include in organic dielectric materials, Inorganic Dielectric Material and organo-mineral complexing dielectric material extremely
Few one kind；Organic dielectric materials are as dielectric layer substrate, Inorganic Dielectric Material conduct in the organo-mineral complexing dielectric material
The temperature sensitive filler of dielectric constant.
The working frequency of the wireless and passive fexible film temperature sensor be arranged to be located at the shielded layer and it is interior absolutely
The frequency of edge layer penetrates in the range of section.
The temperature measuring equipment further includes background control center, and the controller passes through transmission line or wireless transport module for institute
It states temperature information and is transferred to the background control center.
In conclusion in the present invention, wireless and passive fexible film temperature sensor is set around outside conductor connecting tube, and is pressed from both sides
Between inner insulating layer and conductor connecting tube, on the one hand can no longer it need according to conductor connecting tube inner space
Size change self structure, it is only necessary to be set around outside conductor connecting tube, so that it may the fixation for completing temperature sensor, for not
Cable connector with the different model of producer has better adaptability；On the other hand, wireless and passive fexible film temperature sensing
Device can be more close to conductor connecting tube, and convenient for the conduction of heat, the measurement of temperature is more accurate；In addition, being located in interior exhausted
Position set-up mode between edge layer and conductor connecting tube can easily facilitate installation, save cost, additionally it is possible to make wireless and passive
Fexible film temperature sensor keeps signal more accurate closer to signal transmitting and receiving unit.
The above description is only an overview of the technical scheme of the present invention, in order to better understand the technical means of the present invention,
And it can be implemented in accordance with the contents of the specification, and in order to allow above and other objects, features and advantages of the invention can
It is clearer and more comprehensible, it is special below to lift preferred embodiment, and cooperate attached drawing, detailed description are as follows.
Detailed description of the invention
The cable intermediate joint temperature measurement system that Fig. 1 show first embodiment of the invention offer is installed among cable
Cross section structure schematic diagram on connector.
Fig. 2 show the system block diagram of cable intermediate joint temperature measurement system in Fig. 1.
Fig. 3 show the cross section structure schematic diagram of wireless and passive fexible film temperature sensor in Fig. 1.
Fig. 4 show the cross section structure signal of wireless and passive fexible film temperature sensor in second embodiment of the invention
Figure.
Fig. 5 show the structural schematic diagram of SAW temperature sensor in third embodiment of the invention.
Fig. 6 show the structural schematic diagram of microwave cavity in fourth embodiment of the invention.
Fig. 7 show the cross section structure schematic diagram of microwave cavity in Fig. 6.
Fig. 8 show the circuit diagram of wireless and passive fexible film temperature sensor in fifth embodiment of the invention.
Fig. 9 show the structural schematic diagram of capacitor and inductance coil in Fig. 8.
Figure 10 show the cross section structure schematic diagram of capacitor and inductance coil in Fig. 9.
Specific embodiment
It is of the invention to reach the technical means and efficacy that predetermined goal of the invention is taken further to illustrate, below in conjunction with
Attached drawing and preferred embodiment, detailed description are as follows.
The present invention provides a kind of cable intermediate joint temperature measurement system, the cable intermediate joint temperature measurement system energy
It is enough that good adaptability may have to the cable connector of various models, and install simply, cost is relatively low.
The cable intermediate joint temperature measurement system that Fig. 1 show first embodiment of the invention offer is installed among cable
Cross section structure schematic diagram on connector, Fig. 2 show the system block diagram of cable intermediate joint temperature measurement system in Fig. 1, such as Fig. 1
And shown in Fig. 2, cable intermediate joint temperature measurement system provided in an embodiment of the present invention is used for the temperature to cable intermediate joint
It measures, which includes the conductor connecting tube 12 for connecting two cable sockets 11, is coated on conductor connecting tube
Inner insulating layer 13 outside 12, the external insulation layer 14 being coated on outside inner insulating layer 13, is set to inner insulating layer 13 and external insulation layer 14
Between shielded layer 16, and the shell 15 being coated on outside external insulation layer 14.
Temperature measurement system includes wireless and passive fexible film temperature sensor 20, signal transmitting and receiving unit 30, controller 40
And background control center 50, wireless and passive fexible film temperature sensor 20 are set around outside conductor connecting tube 12, and are located in interior
Between insulating layer 13 and conductor connecting tube 12.When temperature measurement system needs to carry out temperature measurement, controller 40 controls described
Signal transmitting and receiving unit 30 sends detectable signal, and wireless and passive fexible film temperature sensor 20, which sends feedback according to detectable signal, to be believed
Number, signal transmitting and receiving unit 30 receives feedback signal, and the signal is transferred to controller 40, and controller 40 is according to signal transmitting and receiving list
The feedback signals of 30 transmitting of member, the temperature of cable intermediate joint are obtained by edge calculations, and after the temperature information is sent to
Platform control centre 50.
In the present embodiment, wireless and passive fexible film temperature sensor 20 is set around outside conductor connecting tube 12, and sandwiched
Between inner insulating layer 13 and conductor connecting tube 12, on the one hand can no longer it need according to inside conductor connecting tube 12
The size in space changes self structure, it is only necessary to be set around outside conductor connecting tube 12, so that it may the fixation of temperature sensor is completed,
There is better adaptability for the cable connector of the different model of different manufacturers；On the other hand, wireless and passive fexible film temperature
Spending sensor 20 can be more close to conductor connecting tube 12, and convenient for the conduction of heat, the measurement of temperature is more accurate；In addition,
The position set-up mode being located between inner insulating layer 13 and conductor connecting tube 12 can easily facilitate installation, save cost, also
Wireless and passive fexible film temperature sensor 20 can be made closer to signal transmitting and receiving unit 30, keep signal more accurate.
Further, signal transmitting and receiving unit 30 includes collector and reader, and in the present embodiment, reader is set to interior
Between insulating layer 13 and external insulation layer 14, signal transmitting and receiving unit 30 is opposite with wireless and passive fexible film temperature sensor 20 to be set
It sets.That is, between signal transmitting and receiving unit 30 and wireless and passive fexible film temperature sensor 20 only between alternating floor inner insulating layer 13,
This can reduce the distance between signal transmitting and receiving unit 30 and wireless and passive fexible film temperature sensor 20, it is ensured that signal it is steady
It is fixed.
Controller 40 is set to outside shell 15, and connecting wire passes through shell 15 and is then connected to controller 40 and signal transmitting and receiving
Between unit 30.
Reader is electrical connected with collector, and reader is used for the transmission of detectable signal and collecting for feedback signal, adopts
The feedback signal that storage is used to receive reader is transferred to controller 40.
Fig. 3 show the cross section structure schematic diagram of wireless and passive fexible film temperature sensor in Fig. 1, and Fig. 4 show this
The cross section structure schematic diagram of wireless and passive fexible film temperature sensor in invention second embodiment, as shown in Figures 3 and 4, nothing
The passive fexible film temperature sensor 20 of line includes sensor body 21 and the protective layer 22 being coated on outside sensor body 21, leads to
On the one hand the setting of overprotection layer 22 can protect sensor body 21, on the other hand, can also play packaging protection
Effect prevents sensor body 21 and damages because of bending.
In the present embodiment, wireless and passive fexible film temperature sensor 20 can in the form of sheets, in assembly with conductor
The shape of 12 outer wall of connecting tube is closely set in outside conductor connecting tube 12.In other embodiments, as shown in figure 4, it can be straight
It connects and is arranged to cylindrical shape, be sheathed on outside conductor connecting tube 12.
Fig. 5 show the structural schematic diagram of SAW temperature sensor in third embodiment of the invention, as shown in figure 5, in this hair
In bright 3rd embodiment, sensor body 21 may include SAW temperature sensor 211, and SAW temperature sensor 211 includes base
Plate 2111, interdigital transducer 2112, reflecting grating 2113 and dual-mode antenna 2114, interdigital transducer 2112, reflecting grating 2113 are arranged
In on substrate 2111, dual-mode antenna 2114 is connected with interdigital transducer 2112.30 electricity of SAW temperature sensor and signal transmitting and receiving unit
Magnetic coupling setting, signal transmitting and receiving unit 30 send pumping signal, and dual-mode antenna 2114 receives the pumping signal, and is introduced into fork
Finger transducer 2112, nearby space generates alternating electric field on the surface and surface of the substrate 2111 below interdigital transducer 2112, hands over
Changed electric field generates corresponding elastic strain on 2111 surface of substrate by inverse piezoelectric effect, thus excitating surface wave.Surface acoustic wave
It is propagated along 2111 surface of substrate to both sides, reflects and be superimposed through two sides reflecting grating 2113, then via interdigital transducer 2112 and transmitting-receiving
Antenna 2114 exports.
At different temperature, propagation characteristic of the surface acoustic wave on substrate 2111 will be different, when on substrate 2111
Temperature change when, SAW temperature sensor 211 return frequency of sound wave and/or Q value (quality factor, Q factor) can also send out
Changing, controller 40 is different according to the frequency and/or Q value of 30 received signal of signal transmitting and receiving unit, can carry out to temperature
Perception.
Preferably, in this embodiment, reflecting grating 2113 can be two, and two reflecting gratings 2113 are respectively arranged at interdigital change
The two sides of energy device 2112.Dual-mode antenna 2114 can be one or more, and substrate 2111 and dual-mode antenna 2114 are wrapped by together
In in protective layer 22.
Fig. 6 show the structural schematic diagram of microwave cavity in fourth embodiment of the invention, and Fig. 7 show microwave in Fig. 6
The cross section structure schematic diagram of resonant cavity, as shown in FIG. 6 and 7, in fourth embodiment of the invention, sensor body 21 includes microwave
Resonant cavity 212, microwave cavity 212 and 30 electromagnetic coupling of dual-mode antenna are arranged, and microwave cavity 212 includes the first metal patch
2121, the second metal patch 2122 and the first medium being located between the first metal patch 2121 and the second metal patch 2122
Layer 2123.Preferably, the first metal patch 2121 and the second metal patch 2122 are rounded, and first medium layer 2123 is cylinder
Shape.In actual operation, three can be considered as a circular resonant cavity, and two metal patches at the top and bottom of resonant cavity can be with
With respectively representing radiation patch and metal.In space therebetween, surrounding can be considered as magnetic wall, be up and down the chamber of electric wall
Body, electric field at center be zero and in edge maximum.
First medium layer 2123 is formed by temperature sensing material, and the change rate of dielectric constant with temperature is 0.05%/DEG C-
10%/DEG C, Young's modulus 1.5Gpa-150Gpa, dielectric constant range is 1-100.
Temperature sensing material includes at least one in organic dielectric materials, Inorganic Dielectric Material and organo-mineral complexing dielectric material
Kind；When temperature sensing material is organo-mineral complexing dielectric material, organic dielectric materials conduct in organo-mineral complexing dielectric material
Dielectric layer substrate, Inorganic Dielectric Material is as the temperature sensitive filler of dielectric constant.Preferably, the Inorganic Dielectric Material includes piezoelectricity pottery
Porcelain (such as barium titanate series, lead zirconate titanate system, inclined potassium/sodium niobtae, inclined strontium barium niobate system), metal oxide (such as titanium dioxide, point
Spar etc.), at least one of semiconductor simple substance (such as silicon, diamond).
Preferably, the organic dielectric materials include polyolefin, fluoropolymer, polyurethane, silicon rubber, siloxanes, ring
At least one of oxygen compound, polyamide, polyimides, polyester, ketone resin, epoxy resin.
Preferably, the organic-inorganic dielectric composite material is the mixing of the inorganic dielectric organic dielectric materials, is mixed
It is 10%-95% that quality, which is closed, than range.
When carrying out temperature measurement, signal transmitting and receiving unit 30 can be by sending the swept-frequency signal of certain bandwidth to microwave resonance
Chamber 212, part identical with 212 frequency of microwave cavity can be introduced in inside microwave cavity 212 in swept-frequency signal, electromagnetism
Wave occurs reflection in the material surface of differing dielectric constant and causes dielectric resonator internal resonance, and is gradually consumed, Qi Tapin
The signal of rate then can receive microwave cavity 212 by 212 return signal Transmit-Receive Unit 30 of microwave cavity, signal transmitting and receiving unit 30
The signal comprising frequency information returned, and the signal is transferred to controller 40, controller 40 detects reflection power most
Low spot is the resonance frequency of microwave cavity 212.Since at different temperatures, the resonance frequency of microwave cavity 212 is different,
Temperature has correlation with microwave cavity 212.Therefore, which can be by microwave cavity 212 resonance frequency
The measurement of rate obtains the temperature at cable intermediate joint.
Fig. 8 show the circuit diagram of wireless and passive fexible film temperature sensor in fifth embodiment of the invention, Fig. 9
It is shown the structural schematic diagram of capacitor and inductance coil in Fig. 8, Figure 10 show the cross section structure of capacitor and inductance coil in Fig. 9
Schematic diagram, as shown in Fig. 8 to Figure 10, in the fifth embodiment of the present invention, sensor body 21 includes lc circuit 213, LC electricity
Road 213 and 30 inductive coupling of signal transmitting and receiving unit are arranged, and lc circuit 213 includes the capacitor 2131 and induction coil for being connected into circuit
2132, signal transmitting and receiving unit 30 sends the swept-frequency signal of certain frequency, and receive 213 feedback of lc circuit containing frequency and/or Q
The signal of value information measures the resonance frequency and/or Q value of lc circuit 213 by frequency scanning.
Since at different temperatures, the resonance frequency and/or Q value of lc circuit 213 are different, and therefore, which can
With by the measurement to 213 resonance frequency of lc circuit and/or Q value, and obtain by edge calculations the temperature at cable intermediate joint
Degree.
As shown in figure 9, in the present embodiment, induction coil 2132 is laid in snail shape, and capacitor 2131 is set to flat
At the center of surface helix shape induction coil 2132, plane and wireless and passive fexible film temperature where the pole plate of capacitor 2131 are passed
Extending direction where sensor 20 is parallel to each other, when wireless and passive fexible film temperature sensor 20 is set around conductor connecting tube 12
When upper, one of substrate 2111 of capacitor 2131 can be close to the setting of conductor connecting tube 12.
As shown in Figure 10, it is additionally provided with second dielectric layer 2133 between two pole plates of capacitor 2131, the second medium
Layer 2133 can be the second dielectric layer 2133 formed by temperature sensitive dielectric substance, to realize capacitor 2131 to temperature
Response sensibility.The change rate of the dielectric constant with temperature of second dielectric layer 2133 is 0.05%/DEG C -10%/DEG C, Young mould
Amount is 1.5Gpa-150Gpa, and dielectric constant range is 1-100.
Temperature sensing material includes at least one in organic dielectric materials, Inorganic Dielectric Material or organo-mineral complexing dielectric material
Kind；When temperature sensing material is organo-mineral complexing dielectric material, organic dielectric materials conduct in organo-mineral complexing dielectric material
Dielectric layer substrate, Inorganic Dielectric Material is as the temperature sensitive filler of dielectric constant.
Preferably, the Inorganic Dielectric Material includes piezoelectric ceramics (such as barium titanate series, lead zirconate titanate system, inclined potassium-sodium niobate
System, inclined strontium barium niobate system), metal oxide (such as titanium dioxide, spinelle), in semiconductor simple substance (such as silicon, diamond)
It is at least one.
Preferably, the organic dielectric materials include polyolefin, fluoropolymer, polyurethane, silicon rubber, siloxanes, ring
At least one of oxygen compound, polyamide, polyimides, polyester, ketone resin, epoxy resin.
Preferably, the organic-inorganic dielectric composite material is the mixing of the inorganic dielectric organic dielectric materials, is mixed
It is 10%-95% that quality, which is closed, than range.
Please continue to refer to Fig. 4, in another embodiment of the present invention, wireless and passive fexible film temperature sensor 20 can
It with cylindrical, and is directly sleeved in conductor connecting tube 12, in the case, the induction coil 2132 in lc circuit 213 can
To be set around on cylindric wireless and passive film temperature sensor 20, capacitor 2131 removably with 2132 phase of induction coil
Even.The structure separates capacitor 2131 and induction coil 2132, on the one hand reduces the complexity of manufacture craft, on the other hand,
Capacitor 2131 can be no longer generally aligned in the same plane with induction coil 2132, this is no longer limited to the parameter of plate capacitor 2131,
Capacitor 2131 and induction coil 2132 can have bigger design space.
In the above embodiments, the working frequency of wireless and passive fexible film temperature sensor 20 is not set as being located at screen
Cover layer 16 and inner insulating layer 13 frequency penetrate section in the range of, to prevent the survey of shielded layer 16 and inner insulating layer 13 to temperature
Amount interferes.
In conclusion in the present invention, wireless and passive fexible film temperature sensor 20 is set around outside conductor connecting tube 12,
And be located between inner insulating layer 13 and conductor connecting tube 12, on the one hand can no longer it need according to conductor connecting tube
The size of 12 inner spaces changes self structure, it is only necessary to be set around outside conductor connecting tube 12, so that it may complete temperature sensor
Fixation, for different manufacturers different model cable connector have better adaptability；On the other hand, wireless and passive is flexible
Film temperature sensor 20 can be more close to conductor connecting tube 12, and convenient for the conduction of heat, the measurement of temperature is more accurate；
In addition, the position set-up mode being located between inner insulating layer 13 and conductor connecting tube 12, installation can be easily facilitated, save at
This, additionally it is possible to make wireless and passive fexible film temperature sensor 20 closer to signal transmitting and receiving unit 30, keeps signal more quasi-
Really.
The above described is only a preferred embodiment of the present invention, be not intended to limit the present invention in any form, though
So the present invention has been disclosed as a preferred embodiment, and however, it is not intended to limit the invention, any technology people for being familiar with this profession
Member, without departing from the scope of the present invention, when the technology contents using the disclosure above make a little change or modification
It is right according to the technical essence of the invention for the equivalent embodiment of equivalent variations, but without departing from the technical solutions of the present invention
Any simple modification, equivalent change and modification made by above embodiments, all of which are still within the scope of the technical scheme of the invention.
Claims (17)
1. a kind of cable intermediate joint temperature measurement system, the cable intermediate joint include be coated on outside conductor connecting tube it is interior absolutely
Edge layer connects the conductor connecting tube of two cable sockets, the external insulation layer being coated on outside the inner insulating layer, is set in described
Shielded layer between insulating layer and the external insulation layer, and the shell being coated on outside external insulation layer, it is characterised in that: the temperature
Spending measuring system includes wireless and passive fexible film temperature sensor and signal transmitting and receiving unit and controller, and the wireless and passive is soft
Property film temperature sensor be set around outside the conductor connecting tube, and be located in the inner insulating layer and the conductor connecting tube it
Between, when the temperature measurement system carries out temperature measurement, the controller controls the signal transmitting and receiving unit and sends detection letter
Number, the wireless and passive fexible film temperature sensor sends feedback signal, the signal transmitting and receiving list according to the detectable signal
Member receives the feedback signal, and the signal is transferred to the controller, and the controller is according to the signal transmitting and receiving unit
The feedback signal of transmitting obtains the temperature of the cable intermediate joint.
2. cable intermediate joint temperature measurement system as described in claim 1, it is characterised in that: the signal transmitting and receiving unit packet
Collector and reader are included, the reader is set between the inner insulating layer and the external insulation layer.
3. cable intermediate joint temperature measurement system as described in claim 1, it is characterised in that: the controller is set to institute
It states outside shell, connecting wire is across the shell and is electrically connected at the controller and the signal transmitting and receiving unit.
4. cable intermediate joint temperature measurement system as claimed in claim 2, it is characterised in that: the reader is adopted with described
Storage is electrical connected, and the reader is used for the transmission of detectable signal and collecting for feedback signal, and the collector is used for will
The feedback signal that the reader receives is transferred to the controller.
5. cable intermediate joint temperature measurement system as described in claim 1, it is characterised in that: the wireless and passive flexible thin
Film temperature sensor includes sensor body and protective layer, and the protective layer is coated on outside the sensor body.
6. cable intermediate joint temperature measurement system as described in claim 1, it is characterised in that: the wireless and passive flexible thin
Film temperature sensor is in the form of sheets or cylindric.
7. cable intermediate joint temperature measurement system as described in claim 1, it is characterised in that: the wireless and passive flexible thin
Film temperature sensor includes SAW temperature sensor, and the SAW temperature sensor includes substrate, interdigital transducer, reflecting grating and receipts
Antenna is sent out, the interdigital transducer, the reflecting grating be set on the substrate, and the dual-mode antenna interdigital is changed with described
Energy device is connected.
8. cable intermediate joint temperature measurement system as claimed in claim 5, it is characterised in that: the sensor body includes
Microwave cavity, the microwave cavity is including the first metal patch, the second metal patch and is located in the first metal patch
First medium layer between piece and the second metal patch.
9. cable intermediate joint temperature measurement system as claimed in claim 8, it is characterised in that: the first medium layer is by temperature
Quick material is formed, and the change rate of dielectric constant with temperature is 0.05%/DEG C -10%/DEG C, Young's modulus 1.5Gpa-
150Gpa, dielectric constant range are 1-100.
10. cable intermediate joint temperature measurement system as claimed in claim 5, it is characterised in that: the sensor body packet
Lc circuit is included, the lc circuit includes the capacitor and induction coil for being connected into circuit.
11. cable intermediate joint temperature measurement system as claimed in claim 10, it is characterised in that: the induction coil is in flat
Surface helix shape is laid, and the capacitor is set at the center of the snail shape induction coil, where the pole plate of the capacitor
Plane be parallel to each other with the extending direction where the wireless and passive fexible film temperature sensor.
12. cable intermediate joint temperature measurement system as claimed in claim 10, it is characterised in that: the induction of the lc circuit
Coil is set around on the cylindric wireless and passive fexible film temperature sensor, the capacitor removably with the induction
Coil is connected.
13. cable intermediate joint temperature measurement system as claimed in claim 10, it is characterised in that: at two of the capacitor
Second dielectric layer is additionally provided between pole plate, the second dielectric layer is formed by temperature sensitive dielectric substance.
14. cable intermediate joint temperature measurement system as claimed in claim 13, it is characterised in that: the second dielectric layer
The change rate of dielectric constant with temperature is 0.05%/DEG C -10%/DEG C, Young's modulus 1.5Gpa-150Gpa, dielectric constant
Range is 1-100.
15. the cable intermediate joint temperature measurement system as described in claim 9 or 14, it is characterised in that: the temperature sensing material
Including at least one of organic dielectric materials, Inorganic Dielectric Material and organo-mineral complexing dielectric material；The organic-inorganic
Organic dielectric materials are as dielectric layer substrate in composite dielectric material, and Inorganic Dielectric Material is as the temperature sensitive filler of dielectric constant.
16. cable intermediate joint temperature measurement system as described in claim 1, it is characterised in that: the wireless and passive is flexible
The working frequency of film temperature sensor is arranged to penetrate the range in section positioned at the frequency of the shielded layer and inner insulating layer
It is interior.
17. cable intermediate joint temperature measurement system as described in claim 1, it is characterised in that: the temperature measurement system
It further include background control center, the temperature information is transferred to described by the controller by transmission line or wireless transport module
Background control center.
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| CN201910578950.5A CN110261001A (en) | 2019-06-28 | 2019-06-28 | Cable intermediate joint temperature measurement system |
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| CN201910578950.5A CN110261001A (en) | 2019-06-28 | 2019-06-28 | Cable intermediate joint temperature measurement system |
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| CN110967122A (en) * | 2019-11-26 | 2020-04-07 | 广东电网有限责任公司汕尾供电局 | Temperature detection fixer of high-voltage power cable intermediate interface |
| CN111024248A (en) * | 2019-12-30 | 2020-04-17 | 戴天智能科技（上海）有限公司 | Data acquisition and temperature measurement sending terminal with edge computing capability |
| CN111707392A (en) * | 2020-06-01 | 2020-09-25 | 国网浙江省电力有限公司宁波供电公司 | Intelligent cable intermediate head temperature measurement system |
| CN111855001A (en) * | 2020-06-01 | 2020-10-30 | 国网浙江省电力有限公司宁波供电公司 | Cable intermediate head temperature measuring device |
| CN112213001A (en) * | 2020-08-20 | 2021-01-12 | 北京智网物联科技有限公司 | Built-in flexible temperature measuring device of cable joint |
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| 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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| 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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Application publication date: 20190920 |