Portable temperature detection device for high-voltage cable

Abstract

The utility model provides a portable temperature detection device for a high-voltage cable. The portable temperature detection device for the high-voltage cable is used at a high-voltage cable joint, the portable temperature detection device for the high-voltage cable comprises a temperature sensing unit, a control unit and an installation assembly, the temperature sensing unit is of a sheet-shaped structure, and the temperature sensing unit is arranged around the periphery of the high-voltage cable joint; the temperature sensing unit comprises a pin, and the pin partially extends out of the sheet-shaped structure; the control unit is inserted into the pins, and the control unit is matched with the temperature sensing unit and is used for detecting temperature information at the high-voltage cable joint; and the mounting assembly is used for arranging the control unit and fixing the temperature sensing unit on the periphery of the high-voltage cable joint. The portable temperature detection device for the high-voltage cable is used at a high-voltage cable joint and can accurately obtain a partial discharge signal of the high-voltage cable joint, so that safety accidents of a high-voltage line are avoided.

Description

Technical Field

[0001] The present application relates to the technical field of electric power temperature measuring equipment, and in particular to a portable temperature detection device for high-voltage cables. Background Art

[0002] Cable is a device for transmitting electric energy or signals, and plays an extremely important role as a bridge in high-voltage lines. In common cable joints, the cables in two cables that need to be connected are usually connected one by one and then insulated and wrapped. The electric field strength at the middle joint of the cable is high enough. When one of the cables is hot due to a virtual connection, it may cause the cable to be broken down, that is, partial discharge problems occur, which can cause safety accidents in high-voltage lines. Therefore, how to accurately capture the partial discharge signal at the high-voltage cable joint is an urgent problem to be solved. Utility Model Content

[0003] In view of this, the present application provides a portable temperature detection device for a high-voltage cable, which is used at a high-voltage cable joint and can accurately obtain a local discharge signal of the high-voltage cable joint to avoid causing safety accidents in the high-voltage line.

[0004] The present application provides a portable temperature detection device for a high-voltage cable, which is used at a high-voltage cable joint. The portable temperature detection device for a high-voltage cable comprises: a temperature sensing unit, a control unit and an installation assembly. The temperature sensing unit is a sheet-like structure, and the temperature sensing unit is arranged around the periphery of the high-voltage cable joint; the temperature sensing unit comprises a pin, and the pin part extends out of the sheet-like structure; the control unit is plugged into the pin, and the control unit and the temperature sensing unit cooperate to detect the temperature information at the high-voltage cable joint; the installation assembly is used to set the control unit and fix the temperature sensing unit to the periphery of the high-voltage cable joint.

[0005] Furthermore, the temperature sensing unit also includes a flexible circuit board and a plurality of temperature sensors, the plurality of temperature sensors are arranged on the flexible circuit board at intervals along a first direction, and the temperature sensors extend along a second direction; along the first direction, the length of the temperature sensor in the second direction gradually decreases; the temperature sensor is a thermocouple sensor, each of the thermocouple sensors includes a detection end and a reference end arranged opposite to each other along the second direction, the reference ends of the plurality of temperature sensors are flush with the ends of the flexible circuit board along the second direction, and are electrically connected to the control unit through the pins; wherein, the first direction intersects with the second direction.

[0006] Further, the temperature sensor includes a first resistance wire and a second resistance wire, and the first resistance wire and the second resistance wire are selected from different conductors or semiconductors; the first resistance wire includes a first connecting portion and a first extending portion connected in a bending manner, and the second resistance wire includes a second connecting portion and a second extending portion connected in a bending manner, and an end of the first connecting portion facing away from the first extending portion is connected to an end of the second connecting portion facing away from the second extending portion to form the detection end; the first extending portion and the second extending portion are spaced apart along the first direction, and the first extending portion and the second extending portion both extend along the second direction; an end of the first extension portion facing away from the first connecting portion and an end of the second extension portion facing away from the second connecting portion form the reference end and are both flush with the end of the flexible circuit board along the second direction.

[0007] Furthermore, along the first direction, the length of the first extension portion in the second direction gradually decreases, and the difference in length between two adjacent first extension portions in the second direction is a constant value; in the same temperature sensor, the lengths of the first extension portion and the second extension portion in the second direction are equal.

[0008] Furthermore, the pin includes a first sub-pin and a second sub-pin, the end of the first extension portion away from the first connecting portion is connected to the first sub-pin, and the end of the second extension portion away from the second connecting portion is connected to the second sub-pin; the first sub-pin and the second sub-pin are both plugged into the control unit.

[0009] Furthermore, the first resistance wire is selected from one of copper wire, constantan wire, nickel-chromium wire, nickel-silicon wire and iron wire; the second resistance wire is selected from one of copper wire, constantan wire, nickel-chromium wire, nickel-silicon wire and iron wire.

[0010] Further, the control unit includes a collection subunit, the collection subunit is electrically connected to the temperature sensor through the pin, and the collection subunit cooperates with the temperature sensor to obtain temperature information at the high-voltage cable joint.

[0011] Furthermore, the control unit also includes a processing subunit and an alarm, the processing subunit is electrically connected to the collection subunit and the alarm, respectively, the processing subunit is used to obtain temperature information at the high-voltage cable joint, when the temperature information at the high-voltage cable joint is greater than a preset temperature value, the processing subunit controls the alarm to turn on.

[0012] Further, the mounting assembly includes a mounting piece and an elastic piece, the opposite ends of the mounting piece are connected to the elastic piece, the mounting piece is used to mount the control unit, the elastic piece includes a first elastic sub-piece, a second elastic sub-piece, a first clip and a second clip, one end of the first elastic sub-piece is connected to the mounting piece, the end of the first elastic sub-piece facing away from the mounting piece is connected to the first clip, one end of the second elastic sub-piece is connected to the mounting piece, the end of the second elastic sub-piece facing away from the mounting piece is connected to the second clip, the first clip and the second clip are clip-connected to fix the temperature sensing unit to the periphery of the high-voltage cable connector.

[0013] Further, along the first direction, the length of the first elastic sub-component is equal to the length of the second elastic sub-component, and the ratio α of the length of the first elastic sub-component to the length of the temperature sensing unit is in the range of: 0.65≤α≤1.

[0014] In the portable temperature detection device for high-voltage cables provided in the present application, the temperature sensing unit is a sheet-like structure and is arranged around the periphery of the high-voltage cable connector, so the temperature sensing unit and the high-voltage cable connector have a large contact area. When the temperature sensing unit is electrically connected to the control unit through the pin, the control unit can obtain temperature information of most areas of the high-voltage cable connector to determine whether excessive heat is generated at the high-voltage cable connector, thereby more accurately obtaining the local discharge signal of the high-voltage cable connector, so that the staff can promptly repair or replace the high-voltage cable connector to avoid causing safety accidents on the high-voltage line. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings required for use in the implementation will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0016] Figure 1 A schematic diagram of the matching relationship between a portable temperature detection device for a high-voltage cable and a high-voltage cable connector according to an embodiment of the present application;

[0017] Figure 2 This is a schematic diagram of the explosion structure of a portable temperature detection device for high-voltage cables according to an embodiment of the present application;

[0018] Figure 3 This is a schematic diagram of the structure of a temperature sensing unit according to an embodiment of the present application;

[0019] Figure 4A circuit block diagram of a control unit according to an embodiment of the present application;

[0020] Figure 5 This is a schematic structural diagram of a mounting component according to an embodiment of the present application.

[0021] Description of reference numerals:

[0022] 100-portable temperature detection device for high-voltage cable, 110-temperature sensing unit, 111-pin, 1111-first sub-pin, 1112-second sub-pin, 112-flexible circuit board, 113-temperature sensor, 1131-detection end, 1132-reference end, 1133-first resistance wire, 1134-second resistance wire, 1135-first connecting part, 1136-first extension part, 1137-second connecting part, 1138-second extension part, 120-control unit, 121-collection subunit, 122-processing subunit, 123-alarm, 130-installation assembly, 131-installation member, 132-elastic member, 1321-first elastic sub-member, 1322-second elastic sub-member, 1323-first fastener, 1324-second fastener, 200-high-voltage cable connector. DETAILED DESCRIPTION

[0023] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0024] The terms "first", "second", etc. in the specification and claims of this application and the above-mentioned drawings are used to distinguish different objects, rather than to describe a specific order. In addition, the terms "including" and "having" and any variations thereof are intended to cover non-exclusive inclusions. For example, a process, method, system, product or device that includes a series of steps or units is not limited to the listed steps or units, but optionally includes steps or units that are not listed, or optionally includes other steps or units inherent to these processes, methods, products or devices.

[0025] Reference to "embodiment" or "implementation" herein means that a particular feature, structure, or characteristic described in conjunction with the embodiment or implementation may be included in at least one embodiment of the present application. The appearance of the phrase in various locations in the specification does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment that is mutually exclusive with other embodiments. It is explicitly and implicitly understood by those skilled in the art that the embodiments described herein may be combined with other embodiments.

[0026] Cable is a device for transmitting electric energy or signals, and plays an extremely important role as a bridge in high-voltage lines. In common cable joints, the cables in two cables that need to be connected are usually connected one by one and then insulated and wrapped. The electric field strength at the middle joint of the cable is high enough. When one of the cables is hot due to a virtual connection, it may cause the cable to be broken down, that is, partial discharge problems occur, which can cause safety accidents in high-voltage lines. Therefore, how to accurately capture the partial discharge signal at the high-voltage cable joint is an urgent problem to be solved.

[0027] Optionally, when local discharge occurs at the high-voltage cable joint, the following changes will occur: first, there will be a transfer of charges during the local discharge process; second, electromagnetic radiation will be generated during the local discharge process, because the rapid movement of charges during the discharge process generates electromagnetic waves; third, ultrasonic waves will be generated during the local discharge process; fourth, light radiation will be generated during the local discharge process; fifth, heat will be generated during the local discharge process, causing temperature changes.

[0028] See also Figure 1 and Figure 2 The present application provides a portable temperature detection device 100 for a high-voltage cable, which is used at a high-voltage cable joint 200. The portable temperature detection device 100 for a high-voltage cable comprises: a temperature sensing unit 110, a control unit 120 and an installation assembly 130. The temperature sensing unit 110 is a sheet-like structure, and the temperature sensing unit 110 is arranged around the periphery of the high-voltage cable joint 200; the temperature sensing unit 110 comprises a pin 111, and a portion of the pin 111 extends out of the sheet-like structure; the control unit 120 is plugged into the pin 111, and the control unit 120 and the temperature sensing unit 110 cooperate to detect the temperature information at the high-voltage cable joint 200; the installation assembly 130 is used to set the control unit 120 and fix the temperature sensing unit 110 to the periphery of the high-voltage cable joint 200.

[0029] It can be understood that the temperature sensing unit 110 and the control unit 120 are electrically connected.

[0030] It can be understood that the temperature sensing unit 110 is a sheet structure, and the temperature sensing unit 110 is arranged around the periphery of the high-voltage cable connector 200. The temperature sensing unit 110 of the sheet structure has a certain flexibility, and the temperature sensing unit 110 is arranged around the periphery of the high-voltage cable connector 200 after being bent.

[0031] It can be understood that the temperature sensing unit 110 forms a closed loop with the control unit 120 through the pin 111 to detect the temperature at the high-voltage cable connector 200 .

[0032] In the portable temperature detection device 100 for high-voltage cables provided in this embodiment, the temperature sensing unit 110 is a sheet structure and the temperature sensing unit 110 is arranged around the periphery of the high-voltage cable connector 200, so the temperature sensing unit 110 has a large contact area with the high-voltage cable connector 200. When the temperature sensing unit 110 is electrically connected to the control unit 120 through the pin 111, the control unit 120 can obtain the temperature information of most areas of the high-voltage cable connector 200 to determine whether too much heat is generated at the high-voltage cable connector 200, thereby more accurately obtaining the local discharge signal of the high-voltage cable connector 200, so that the staff can repair or replace the high-voltage cable connector 200 in time to avoid causing high-voltage line safety accidents. In addition, the structural design of the portable temperature detection device 100 for high-voltage cables is simple and easy to carry, which is conducive to improving the performance of the portable temperature detection device 100 for high-voltage cables.

[0033] See also Figure 3 In some embodiments, the temperature sensing unit 110 further includes a flexible circuit board 112 and a plurality of temperature sensors 113, wherein the plurality of temperature sensors 113 are arranged along a first direction (eg Figure 3 The temperature sensors 113 are spaced apart from each other along the second direction (as shown in the X direction) and the ... Figure 3 Along the first direction, the length of the temperature sensor 113 in the second direction gradually decreases; the temperature sensor 113 is a thermocouple sensor, each of which includes a detection end 1131 and a reference end 1132 arranged opposite to each other along the second direction, and the reference ends 1132 of the multiple temperature sensors 113 are flush with the ends of the flexible circuit board 112 along the second direction, and are electrically connected to the control unit 120 through the pin 111; wherein the first direction intersects with the second direction.

[0034] In the terminology of the present application, "plurality" means greater than or equal to two, and may be but is not limited to two, three, four, five, six, seven, eight, nine or ten, etc.

[0035] It can be understood that along the first direction, the length of the temperature sensor 113 in the second direction gradually decreases, and the reference end 1132 of the multiple temperature sensors 113 is flush with the end of the flexible circuit board 112 along the second direction. It can be that along the second direction, the detection ends 1131 of different temperature sensors 113 are not flush, and along the first direction, the distance between the detection end 1131 and the reference end 1132 of each temperature sensor 113 gradually decreases.

[0036] In this embodiment, the multiple temperature sensors 113 are arranged on the flexible circuit board 112 so that the temperature sensing unit 110 can be bent and arranged around the outer periphery of the high-voltage cable connector 200, so that the temperature sensing unit 110 has a sufficiently large temperature detection range for the high-voltage cable connector 200. The temperature sensor 113 is electrically connected to the control unit 120 through the pin 111, so that the detection end 1131 and the reference end 1132 form a closed loop. When the high-voltage cable connector 200 generates heat due to local discharge, the temperature of the detection end 1131 increases, and the electrons close to the detection end 1131 have higher kinetic energy and tend to diffuse toward the detection end 1131. The reference end 1132 is flush with the end of the flexible circuit board 112 along the second direction and the temperature remains unchanged. The electrons close to the reference end 1132 have lower kinetic energy and diffuse slower. The detection end 1131 and the reference end 1132 generate thermoelectric potential due to the unbalanced diffusion of internal electrons, and then a current is formed between the detection end 1131 and the reference end 1132 to obtain the temperature information at the high-voltage cable connector 200. Furthermore, the multiple temperature sensors 113 are arranged at intervals along the first direction, and along the first direction, the length of the temperature sensor 113 in the second direction gradually decreases, and the reference ends 1132 of the multiple temperature sensors 113 are flush with the end of the flexible circuit board 112 along the second direction. Then, the multiple temperature sensors 113 cooperate with the control unit 120 to detect the temperature of different positions of the high-voltage cable connector 200 along the second direction and the temperature of different positions along the first direction, so as to more accurately obtain the local discharge signal of the high-voltage cable connector 200, so as to facilitate the staff to repair or replace the high-voltage cable connector 200 in time to avoid causing high-voltage line safety accidents.

[0037] Optionally, when the high-voltage cable connector 200 generates heat due to partial discharge, the detection end 1131 is a high-temperature end and the reference end 1132 is a low-temperature end. In other words, the temperature of the detection end 1131 is higher than that of the reference end 1132 .

[0038] In some embodiments, the temperature sensor 113 includes a first resistance wire 1133 and a second resistance wire 1134, wherein the first resistance wire 1133 and the second resistance wire 1134 are selected from different conductors or semiconductors; the first resistance wire 1133 includes a first connecting portion 1135 and a first extending portion 1136 connected in a bent manner, and the second resistance wire 1134 includes a second connecting portion 1137 and a second extending portion 1138 connected in a bent manner, and an end of the first connecting portion 1135 away from the first extending portion 1136 is connected to the second connecting portion 1137. 37 is connected to one end away from the second extension portion 1138 to form the detection end 1131; the first extension portion 1136 and the second extension portion 1138 are arranged at intervals along the first direction, and the first extension portion 1136 and the second extension portion 1138 both extend along the second direction; the end of the first extension portion 1136 away from the first connecting portion 1135 and the end of the second extension portion 1138 away from the second connecting portion 1137 form the reference end 1132 and are both flush with the end of the flexible circuit board 112 along the second direction.

[0039] It can be understood that the first connecting portion 1135 and the first extending portion 1136 are arranged in an “L” shape, and the second connecting portion 1137 and the second extending portion 1138 are arranged in an “L” shape.

[0040] In this embodiment, the first resistance wire 1133 and the second resistance wire 1134 are selected from different conductors or semiconductors, so that the first resistance wire 1133 and the second resistance wire 1134 have different thermoelectric properties. When the high-voltage cable connector 200 generates heat due to partial discharge, there is a difference in the diffusion rate of electrons in the first resistance wire 1133 and the diffusion rate of electrons in the second resistance, which is conducive to ensuring that the temperature sensor 113 generates a significant electromotive force when measuring temperature, and improving the sensitivity and accuracy of the temperature sensor 113 for testing the temperature of the high-voltage cable connector 200. Specifically, the first connection part 1135 and the second connection part 1137 are connected to form the detection end 1131. When the high-voltage cable connector 200 generates heat due to local discharge, the temperature of the detection end 1131 increases, and the free electrons in the first resistance wire 1133 diffuse from the first connection part 1135 to the first extension part 1136, and the free electrons in the second resistance wire 1134 diffuse from the second connection part 1137 to the second extension part 1138, so that the detection end 1131 and the reference end 1132 generate thermoelectric potential due to the unbalanced diffusion of internal electrons, and then a current is formed between the detection end 1131 and the reference end 1132, so as to obtain the temperature information at the high-voltage cable connector 200. The temperature sensor 113 can accurately detect the temperature of the area of ​​the high-voltage cable connector 200 corresponding to the detection end 1131, and has high sensitivity, which is conducive to quickly capturing the local discharge signal of the high-voltage cable connector 200, and is convenient for reminding the staff to repair or replace the high-voltage cable connector 200, so as to reduce the occurrence of high-voltage line safety accidents.

[0041] Optionally, the first connection portion 1135 and the second connection portion 1137 are electrically connected by welding.

[0042] In some embodiments, along the first direction, the length of the first extension portion 1136 in the second direction gradually decreases, and the difference in length of two adjacent first extension portions 1136 in the second direction is a constant value; in the same temperature sensor 113, the lengths of the first extension portion 1136 and the second extension portion 1138 in the second direction are equal. In other words, along the first direction, the length of the second extension portion 1138 in the second direction gradually decreases, and the difference in length of two adjacent second extension portions 1138 in the second direction is a constant value.

[0043] It can be understood that, along the first direction, the length of the first extension portion 1136 in the second direction decreases in a gradient manner, and the length of the second extension portion 1138 in the second direction decreases in a gradient manner.

[0044] In this embodiment, along the first direction, the length of the first extension portion 1136 in the second direction gradually decreases, and the difference in length of two adjacent first extension portions 1136 in the second direction is a constant value; the length of the second extension portion 1138 in the second direction gradually decreases, and the difference in length of two adjacent second extension portions 1138 in the second direction is a constant value, then along the first direction, the distance between the detection end 1131 and the reference end 1132 of each of the temperature sensors 113 gradually decreases, and the detection end 1131 and the reference end 1132 of two adjacent temperature sensors 113 are 132 is also a constant, then the detection end 1131 of the temperature sensor 113 is evenly distributed at different positions of the high-voltage cable connector 200 along the second direction, so that the temperature sensing unit 110 can detect the temperature information of the high-voltage cable connector 200 at different positions along the second direction, so as to accurately detect the information of the high-voltage cable connector 200 generating heat at different positions, thereby facilitating more accurately capturing the local discharge signal of the high-voltage cable connector 200, and facilitating reminding the staff to repair or replace the high-voltage cable connector 200, so as to reduce the occurrence of high-voltage line safety accidents.

[0045] In some embodiments, the pin 111 includes a first sub-pin 1111 and a second sub-pin 1112, the end of the first extension portion 1136 away from the first connection portion 1135 is connected to the first sub-pin 1111, and the end of the second extension portion 1138 away from the second connection portion 1137 is connected to the second sub-pin 1112; the first sub-pin 1111 and the second sub-pin 1112 are both plugged into the control unit 120.

[0046] In this embodiment, each of the temperature sensors 113 is electrically connected to the control unit 120 via one of the pins 111, and in each of the temperature sensors 113, the first extension portion 1136 is electrically connected to the control unit 120 via the first sub-pin 1111, and the second extension portion 1138 is electrically connected to the control unit 120 via the second sub-pin 1112, so that the detection end 1131 and the reference end 1132 form a closed loop, thereby realizing the detection of the temperature of the high-voltage cable connector 200.

[0047] In some embodiments, the first resistance wire 1133 is selected from one of copper wire, constantan wire, nickel-chromium wire, nickel-silicon wire and iron wire; the second resistance wire 1134 is selected from one of copper wire, constantan wire, nickel-chromium wire, nickel-silicon wire and iron wire.

[0048] In this embodiment, copper wire, constantan wire, nickel-chromium wire, nickel-silicon wire and iron wire are conductors or semiconductors. When the first resistance wire 1133 and the second resistance wire 1134 are respectively selected from one of copper wire, constantan wire, nickel-chromium wire, nickel-silicon wire and iron wire, the first resistance wire 1133 and the second resistance wire 1134 both have conductive function and good anti-oxidation function, can be used for a long time in a high temperature environment, which is beneficial to prolonging the service life of the high-voltage cable portable temperature detection device 100.

[0049] See also Figure 4 In some embodiments, the control unit 120 includes a collection subunit 121, and the collection subunit 121 is electrically connected to the temperature sensor 113 through the pin 111. The collection subunit 121 cooperates with the temperature sensor 113 to obtain temperature information at the high-voltage cable connector 200.

[0050] In this embodiment, the acquisition subunit 121 is electrically connected to the temperature sensor 113 through the pin 111, so that the detection end 1131 and the reference end 1132 in each temperature sensor 113 form a closed loop, and the temperature sensor 113 cooperates with the multiple temperature sensors 113 to collect temperature information of different positions of the high-voltage cable connector 200 along the second direction, so as to achieve more comprehensive temperature detection of the high-voltage cable connector 200, facilitate accurate capture of the partial discharge signal of the high-voltage cable connector 200, and thus facilitate reminding the staff to repair or replace the high-voltage cable connector 200, so as to reduce the occurrence of high-voltage line safety accidents.

[0051] In some embodiments, the control unit 120 also includes a processing subunit 122 and an alarm 123, the processing subunit 122 is electrically connected to the collection subunit 121 and the alarm 123, respectively, the processing subunit 122 is used to obtain the temperature information at the high-voltage cable connector 200, when the temperature information at the high-voltage cable connector 200 is greater than a preset temperature value, the processing subunit 122 controls the alarm 123 to turn on.

[0052] It can be understood that the preset temperature value is the temperature of the high-voltage cable connector 200 when the high-voltage cable connector 200 operates normally.

[0053] In this embodiment, the processing subunit 122 can obtain the temperature information at the high-voltage cable joint 200. In other words, the processing subunit 122 can obtain the temperature information of the high-voltage cable joint 200 at different positions along the second direction collected by the multiple temperature sensors 113 and the collection subunit 121. The processing subunit 122 can process the temperature information at the high-voltage cable joint 200 to determine whether the temperature information at the high-voltage cable joint 200 is greater than the preset temperature value. If the temperature information at the high-voltage cable joint 200 is greater than the preset temperature value, it means that partial discharge may occur at the high-voltage cable joint 200, resulting in excessive temperature. The processing subunit 122 controls the alarm 123 to turn on, so as to mark the position of the high-voltage cable joint 200, so that the staff can more quickly confirm the faulty high-voltage cable joint 200 and repair it, which is conducive to improving the efficiency of repairing or replacing the high-voltage cable joint 200, so as to reduce the probability of high-voltage line safety accidents.

[0054] Optionally, the alarm 123 may be, but is not limited to, a warning light, a warning bell, etc.

[0055] See also Figure 5 In some embodiments, the mounting assembly 130 includes a mounting member 131 and an elastic member 132, the opposite ends of the mounting member 131 are connected to the elastic member 132, the mounting member 131 is used to mount the control unit 120, the elastic member 132 includes a first elastic sub-member 1321, a second elastic sub-member 1322, a first clip 1323 and a second clip 1324, one end of the first elastic sub-member 1321 is connected to the mounting member 131, the end of the first elastic sub-member 1321 facing away from the mounting member 131 is connected to the first clip 1323, one end of the second elastic sub-member 1322 is connected to the mounting member 131, the end of the second elastic sub-member 1322 facing away from the mounting member 131 is connected to the second clip 1324, the first clip 1323 and the second clip 1324 are snap-connected to fix the temperature sensing unit 110 to the periphery of the high-voltage cable connector 200.

[0056] In this embodiment, the mounting component 130 includes a mounting member 131 and an elastic member 132, and the mounting member 131 is used to install the control unit 120, so that the mounting member 131 and the control unit 120 are installed into an integrated structure. When the control unit 120 is plugged into the pin 111 of the temperature sensing unit 110, it is convenient for the mounting component 130 to be further assembled with the temperature sensing unit 110. Furthermore, the elastic member 132 includes a first elastic sub-member 1321, a second elastic sub-member 1322, a first fastener 1323 and a second fastener 1324, the mounting member 131, the first elastic sub-member 1321 and the first fastener 1323 are connected in sequence, the mounting member 131, the second elastic sub-member 1322 and the second fastener 1324 are connected in sequence, and when the first fastener 1323 and the second fastener 1324 are fastened together, the mounting member 131, the first elastic sub-member 1321, the first fastener 1323, the second fastener 1324 and the second elastic sub-member 1322 are connected into a ring structure to fix the temperature sensing unit 110 and the control unit 120 to the periphery of the high-voltage cable connector 200. The first fastener 1323 and the second fastener 1324 are snap-connected to facilitate the installation and removal of the temperature sensing unit 110 and the control unit 120 by the installation assembly 130, so as to improve the efficiency of replacing or repairing the temperature sensing unit 110 and the control unit 120. Furthermore, the first elastic sub-component 1321 and the second elastic sub-component 1322 have a certain elasticity. When the mounting component 131, the first elastic sub-component 1321, the first snap component 1323, the second snap component 1324 and the second elastic sub-component 1322 are connected into a ring structure and wrapped around the outer periphery of the high-voltage cable connector 200, the first elastic sub-component 1321 and the second elastic sub-component 1322 are stretched, which is conducive to further pressing the temperature sensing unit 110 toward the center of the high-voltage cable connector 200, so as to enhance the fit between the temperature sensing unit 110 and the high-voltage cable connector 200, thereby further improving the accuracy of the temperature sensing unit 110 in detecting the temperature of the high-voltage cable connector 200, so as to more accurately obtain the partial discharge information of the high-voltage cable connector 200.

[0057] In some embodiments, along the first direction, the length of the first elastic sub-component 1321 is equal to the length of the second elastic sub-component 1322 , and the ratio α of the length of the first elastic sub-component 1321 to the length of the temperature sensing unit 110 is in the range of 0.65≤α≤1.

[0058] Specifically, the value of the ratio α of the length of the elastic member 132 to the length of the temperature sensing unit 110 can be, but is not limited to, 0.65, 0.68, 0.7, 0.72, 0.74, 0.75, 0.78, 0.8, 0.82, 0.85, 0.87, 0.89, 0.9, 0.92, 0.94, 0.96, 0.98 and 1, etc.

[0059] In this embodiment, along the first direction, the length of the first elastic sub-component 1321 is equal to the length of the second elastic sub-component 1322, and the ratio α of the length of the first elastic sub-component 1321 to the length of the temperature sensing unit 110 satisfies the range: 0.65≤α≤1, then the ratio of the length of the first elastic sub-component 1321 to the length of the temperature sensing unit 110 is within a reasonable range, so that when the first buckle 1323 and the second buckle 1324 are buckled and connected, the first elastic sub-component 1321 and the second elastic sub-component 1322 surround the temperature sensing unit 110. The outer periphery of the temperature sensing unit 110, the first elastic sub-component 1321 and the second elastic sub-component 1322 have a larger contact area with the temperature sensing unit 110, which is beneficial to improving the fit between the temperature sensing unit 110 and the high-voltage cable connector 200, so that the temperature sensing unit 110 can more accurately detect the temperature information of the high-voltage cable connector 200, so that the staff can more accurately obtain the partial discharge signal of the high-voltage cable connector 200, thereby repairing or replacing the high-voltage cable connector 200 to avoid the occurrence of high-voltage safety accidents.

[0060] Mentioning "embodiment" and "implementation method" in this application means that the specific features, structures or characteristics described in conjunction with the embodiment may be included in at least one embodiment of the present application. The appearance of the phrases in various places in the specification does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment that is mutually exclusive with other embodiments. It is explicitly and implicitly understood by those skilled in the art that the embodiments described in this application can be combined with other embodiments. In addition, it should also be understood that the features, structures or characteristics described in the various embodiments of the present application can be arbitrarily combined to form another embodiment that does not deviate from the spirit and scope of the technical solution of the present application, provided that there is no contradiction between them.

[0061] Finally, it should be noted that the above implementation modes are only used to illustrate the technical solution of the present application and are not intended to limit it. Although the present application has been described in detail with reference to the above preferred implementation modes, a person of ordinary skill in the art should understand that the technical solution of the present application may be modified or replaced by equivalents without departing from the spirit and scope of the technical solution of the present application.

Claims

1. A portable temperature detection device for high-voltage cables, used at high-voltage cable joints, characterized in that: The portable temperature detection device for high-voltage cables comprises: A temperature sensing unit, the temperature sensing unit is a sheet-like structure, the temperature sensing unit is arranged around the periphery of the high-voltage cable connector; the temperature sensing unit includes a pin, and the pin part extends out of the sheet-like structure; A control unit, the control unit is plugged into the pin, and the control unit cooperates with the temperature sensing unit to detect temperature information at the high-voltage cable joint; and An installation component is used to set the control unit and fix the temperature sensing unit to the periphery of the high-voltage cable connector.

2. The portable temperature detection device for high-voltage cables according to claim 1, characterized in that: The temperature sensing unit also includes a flexible circuit board and a plurality of temperature sensors, wherein the plurality of temperature sensors are arranged on the flexible circuit board at intervals along a first direction, and the temperature sensors extend along a second direction; along the first direction, the length of the temperature sensor in the second direction gradually decreases; the temperature sensor is a thermocouple sensor, each of the thermocouple sensors includes a detection end and a reference end arranged opposite to each other along the second direction, the reference ends of the plurality of temperature sensors are flush with the ends of the flexible circuit board along the second direction, and are electrically connected to the control unit through the pins; wherein the first direction intersects with the second direction.

3. The portable temperature detection device for high-voltage cables according to claim 2 is characterized in that: The temperature sensor includes a first resistance wire and a second resistance wire, and the first resistance wire and the second resistance wire are selected from different conductors or semiconductors; the first resistance wire includes a first connecting portion and a first extending portion connected in a bent manner, and the second resistance wire includes a second connecting portion and a second extending portion connected in a bent manner, and an end of the first connecting portion facing away from the first extending portion is connected to an end of the second connecting portion facing away from the second extending portion to form the detection end; the first extending portion and the second extending portion are spaced apart along the first direction, and the first extending portion and the second extending portion both extend along the second direction; an end of the first extending portion facing away from the first connecting portion and an end of the second extending portion facing away from the second connecting portion form the reference end and are both flush with the end of the flexible circuit board along the second direction.

4. The portable temperature detection device for high-voltage cables according to claim 3 is characterized in that: Along the first direction, the length of the first extension portion in the second direction gradually decreases, and the difference in length between two adjacent first extension portions in the second direction is a constant value; in the same temperature sensor, the lengths of the first extension portion and the second extension portion in the second direction are equal.

5. The portable temperature detection device for high-voltage cables according to claim 3 is characterized in that: The pin includes a first sub-pin and a second sub-pin, the end of the first extension portion away from the first connecting portion is connected to the first sub-pin, and the end of the second extension portion away from the second connecting portion is connected to the second sub-pin; the first sub-pin and the second sub-pin are both plugged into the control unit.

6. The portable temperature detection device for high-voltage cables according to claim 3 is characterized in that: The first resistance wire is selected from one of copper wire, constantan wire, nickel-chromium wire, nickel-silicon wire and iron wire; the second resistance wire is selected from one of copper wire, constantan wire, nickel-chromium wire, nickel-silicon wire and iron wire.

7. The portable temperature detection device for high-voltage cables according to any one of claims 2 to 6, characterized in that: The control unit comprises a collection subunit, the collection subunit is electrically connected to the temperature sensor through the pin, and the collection subunit cooperates with the temperature sensor to obtain temperature information at the high-voltage cable joint.

8. The portable temperature detection device for high-voltage cables according to claim 7, characterized in that: The control unit also includes a processing subunit and an alarm. The processing subunit is electrically connected to the collection subunit and the alarm respectively. The processing subunit is used to obtain temperature information at the high-voltage cable joint. When the temperature information at the high-voltage cable joint is greater than a preset temperature value, the processing subunit controls the alarm to turn on.

9. The portable temperature detection device for high-voltage cables according to any one of claims 2 to 6, characterized in that: The mounting assembly includes a mounting piece and an elastic piece, wherein opposite ends of the mounting piece are connected to the elastic piece, and the mounting piece is used to mount the control unit, and the elastic piece includes a first elastic sub-piece, a second elastic sub-piece, a first clip and a second clip, wherein one end of the first elastic sub-piece is connected to the mounting piece, and one end of the first elastic sub-piece facing away from the mounting piece is connected to the first clip, and one end of the second elastic sub-piece is connected to the mounting piece, and one end of the second elastic sub-piece facing away from the mounting piece is connected to the second clip, and the first clip and the second clip are clip-connected to fix the temperature sensing unit to the periphery of the high-voltage cable connector.

10. The portable temperature detection device for high-voltage cables according to claim 9, characterized in that: Along the first direction, the length of the first elastic sub-component is equal to the length of the second elastic sub-component, and the ratio α of the length of the first elastic sub-component to the length of the temperature sensing unit is in the range of 0.65≤α≤1.

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