Power cable joint fault diagnosis device

Abstract

The utility model relates to a power cable joint fault diagnosis device in the technical field of fault diagnosis devices, which is characterized in that a sealing arc plate used for wrapping and sealing a cable placed in a fixing device is embedded in a block body of a cable clamping block; fixing plates used for driving the sealing arc plate to move up and down are fixedly installed at the front end and the rear end of the sealing arc plate, and springs used for driving the fixing plates to move up and down are arranged at the bottom ends of the fixing plates. When the cable joint needs to be fixed, a cable of the cable joint can be firstly clamped on the partition plate, and the sealing ring on the partition plate can prevent rainwater entering the mounting cylinder I and the mounting cylinder II from entering the cable joint; then the clamping blocks on the mounting cylinder II are clamped into the clamping grooves in the mounting cylinder I, and the two mounting rings are mounted through bolts, so that the mounting cylinder I and the mounting cylinder II can be mounted; and at the moment, under the elastic action of the spring, the sealing arc plate is close to the cable and is sealed with the cable.

Description

Technical Field

[0001] The utility model relates to the technical field of fault diagnosis devices, in particular to a power cable joint fault diagnosis device. Background Art

[0002] With the continuous development of power systems, power cables are widely used in power systems and have become the main material for power distribution and transmission of enterprises and social utilities. During the operation of the power grid, cable joints are the weakest link, so it is necessary to accurately and quickly determine the quality and operating status of the joints. However, during the installation of the existing cable joint fault diagnosis device, due to the lack of a sealing device for the cable, it is easy for rainwater to enter the cable joint on rainy days, causing damage to the cable joint.

[0003] For example, the Chinese patent application number CN201721564896.1 is a power cable connector fault diagnosis device, in which the back of the fixing bolt fits with the front surface of the device body, the right end face of the precise positioning device is nested with the connecting ring, the connecting rod is welded with the inner surface of the device body, the induction coil is connected to the fixing ring, the device body is nested with the connecting ring, the connecting circular plate is welded with the connecting rod, the cable connection hole is embedded in the front surface of the connecting circular plate, and the precise positioning device includes an outer cover shell, a cable connection channel, a detector, a wire, and a locator. The bottom of the detector fits with the bottom of the inner surface of the outer cover shell, the detector is connected to the locator through a wire, and the cable connection channel is embedded in the left end face of the outer cover shell. It has the following technical defects:

[0004] When installing the two cable connectors, they need to be sealed to prevent rainwater from entering the installation box. Since a cable connection hole is provided on the left side of the outer cover shell and there is no device for sealing the cable connection hole, rainwater may easily enter the outer cover shell along the cable, thereby causing a short circuit between the two cable connectors, making it inconvenient to use the cable connector fault diagnosis device. Utility Model Content

[0005] In order to solve the problem that when two cable connectors are installed, they need to be sealed to prevent rainwater from entering the installation box, as proposed in the above background technology, the left side of the outer cover shell is provided with a cable connection hole, and there is no device for sealing the cable connection hole, which easily causes rainwater to enter the outer cover shell along the cable, thereby causing a short circuit between the two cable connectors, making it inconvenient to use the cable connector fault diagnosis device, the utility model provides the following technical solutions:

[0006] A power cable joint fault diagnosis device comprises a fixing device for installing a cable joint, and sealing devices for waterproofing the barrel cavity of the fixing device are arranged at the left and right ends of the fixing device;

[0007] The sealing device includes cable clamps arranged on the left and right ends of the fixing device, and a sealing arc plate for wrapping and sealing the cable placed in the fixing device is embedded in the block body of the cable clamp. Fixed plates for driving the sealing arc plate to move up and down are fixedly installed at the front and rear ends of the sealing arc plate, and a spring for driving the fixing plate to move up and down is arranged at the bottom end of the fixing plate.

[0008] Furthermore, the fixing device comprises a mounting cylinder 1 for clamping and fixing the cable connector, and a mounting cylinder 2 is clamped and connected below the mounting cylinder 1 and cooperates with the mounting cylinder 1 to fix the cable connector.

[0009] Furthermore, a card slot 1 is provided at the bottom end of the body of the installation cylinder 1 for easy card connection with the installation cylinder 2.

[0010] Furthermore, a card block is fixedly installed on the top of the second installation tube and is connected to the card slot by being engaged with the first card slot. A partition for clamping the cable connector is fixedly installed in the cavity of the second installation tube, and there are two partitions, which are distributed in a linear array in the cavity of the second installation tube.

[0011] Furthermore, a groove is provided on the top of the plate body of the partition, and the groove is in a semicircular arc shape, and a sealing ring for further sealing the cable joint is clamped in the groove.

[0012] Furthermore, a temperature sensor for diagnosing cable joint faults is arranged in the cavity of the second mounting tube, a battery for providing power to the temperature sensor is arranged on the left side of the temperature sensor, and a signal transmitter for transmitting the temperature sensor detection signal is arranged on the left side of the battery.

[0013] Furthermore, the top end is fixedly installed with a mounting ring for fixedly connecting the mounting tube one and the mounting tube two, and there are two mounting rings, which are symmetrically distributed on the cylinder bodies of the mounting tube one and the mounting tube two in an upper and lower manner.

[0014] Compared with the prior art, the beneficial effects of the utility model are:

[0015] By arranging the sealing device and the fixing device, when the cable joint needs to be fixed, the cable of the cable joint can be first clamped on the partition, and the sealing ring on the partition can prevent rainwater that enters the installation tube one and the installation tube two from entering the cable joint; then the clamping block on the installation tube two is clamped into the clamping groove on the installation tube one, and then the two installation rings are installed by bolts, and the installation tube one and the installation tube two can be installed; and at this time, under the elastic action of the spring, the sealing arc plate is made to approach the cable and form a seal with the cable, which can reduce the damage of the cable joint caused by rainwater entering the tube cavity of the installation tube one and the installation tube two, and at the same time, the temperature sensor can be used to diagnose and detect the operating status of the cable joint, and the operating status of the cable joint is transmitted to the monitoring platform for evaluation through the signal transmitter. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the structure of the utility model;

[0017] Figure 2 This is a schematic diagram of the structure of the fixing device of the utility model;

[0018] Figure 3 It is a cross-sectional view of the first and second installation tubes of the utility model;

[0019] Figure 4 This is a schematic diagram of the structure of the second installation tube of the utility model;

[0020] Figure 5 This is a cross-sectional view of the cable clamp block of the utility model;

[0021] Figure 6 This is a schematic diagram of the structure of the sealing device of the utility model.

[0022] In the accompanying drawings, the names of the components represented by the reference numerals are listed as follows:

[0023] 100 - fixing device, 110 - installation tube 1, 111 - card slot, 120 - installation tube 2, 121 - card block, 122 - partition, 123 - groove, 124 - sealing ring;

[0024] 200-sealing device, 210-cable clamp block, 220-fixing plate, 230-spring, 240-sealing arc plate;

[0025] 001-Mounting ring, 002-Battery, 003-Temperature sensor, 004-Signal transmitter. DETAILED DESCRIPTION

[0026] The preferred specific implementation methods for implementing the present utility model are described in detail below, and a clear and complete description is made in conjunction with the accompanying drawings.

[0027] See also Figure 1-Figure 6, the utility model provides a power cable joint fault diagnosis device.

[0028] With the continuous development of the power system, power cables are widely used in the power system and have become the main material for power distribution and transmission of enterprises and social utilities. During the operation of the power grid, the cable joint is the weakest link, so it is necessary to accurately and quickly determine the quality and operation status of the joint. However, during the installation of the existing cable joint fault diagnosis device, due to the lack of a sealing device for the cable, it is easy for rainwater to enter the cable joint on rainy days and cause damage to the cable joint. Therefore, it is necessary to improve it, which includes a fixing device 100 for installing the cable joint, and the left and right ends of the fixing device 100 are provided with sealing devices 200 for waterproofing the barrel cavity of the fixing device 100;

[0029] The fixing device 100 includes a mounting cylinder 110 for clamping and fixing the cable connector, and a mounting cylinder 2 120 is clamped and connected below the mounting cylinder 110 and is used to cooperate with the mounting cylinder 110 to fix the cable connector;

[0030] The top of 110 is fixedly installed with a mounting ring 001 for fixing the mounting tube 1 10 and the mounting tube 2 120, and there are two mounting rings 001, which are symmetrically distributed on the barrels of the mounting tube 1 10 and the mounting tube 2 120, and the mounting rings 001 on the mounting tube 1 10 and the mounting tube 2 120 are connected by bolts, so that the mounting tube 1 10 and the mounting tube 2 120 are fixed to each other, so as to prevent rainwater from entering the mounting tube 1 110 and the mounting tube 2 120 and causing damage to the cable joint;

[0031] A temperature sensor 003 for diagnosing the fault of the cable joint is arranged in the cavity of the second installation tube 120, and the model of the temperature sensor 003 is RS485, and the temperature sensor 003 belongs to the prior art, and is only bonded in the cylinder cavity of the second installation tube 120 by high viscosity glue, so as to facilitate the fault diagnosis and detection of the cable joint installed in the cavity of the second installation tube 120; a battery 002 for providing power to the temperature sensor 003 is arranged on the left side of the temperature sensor 003, wherein the battery 002 belongs to the prior art, and is bonded in the cylinder cavity of the second installation tube 120 by high viscosity glue, so as to provide power to the temperature sensor 003 and the signal transmitter 004; a signal transmitter 004 for transmitting the 003 detection signal is arranged on the left side of the battery 002, and the signal transmitter 004 is connected to the cable operation monitoring platform, and the cable operation monitoring platform can process and analyze the monitored information and evaluate the operating status of the cable joint; and the signal transmitter 004 is a prior art, so it is not described in detail;

[0032] The bottom of the cylinder of the installation cylinder 110 is provided with a card slot 111 for easy engagement with the installation cylinder 2 120; the top of the installation cylinder 2 120 is fixedly provided with a card block 121 that is engaged with the card slot 111, so that when the installation cylinder 110 and the installation cylinder 2 120 are installed, the card block 12 on the installation cylinder 2 120 can be inserted into the card slot 111 on the installation cylinder 110, and then the two installation rings 001 are installed by bolts, so that the installation cylinder 110 and the installation cylinder 2 120 can be installed;

[0033] A partition 122 for clamping the cable joint is fixedly installed in the cavity of the second installation tube 120, and there are two partitions 122, which are distributed in the cavity of the second installation tube 120 in a linear array, and an independent space is formed between the partition 122 and the cable clamp block 210, so as to prevent rainwater from entering the cable joint; a groove 123 is opened on the top of the plate body of the partition 122, and the groove 123 is semicircular, and a sealing ring 124 for further sealing the cable joint is clamped in the groove of the groove 123, so as to further prevent rainwater from entering the cable joint;

[0034] The sealing device 200 includes a cable clamp block 210 disposed on the left and right ends of the fixing device 100, and a sealing arc plate 240 is embedded in the block of the cable clamp block 210 for wrapping and sealing the cable placed in the fixing device 100. The front and rear ends of the sealing arc plate 240 are fixedly installed with a fixing plate 220 for driving the sealing arc plate 240 to move up and down. The bottom end of the fixing plate 220 is provided with a spring 230 for driving the fixing plate 220 to move up and down, and the bottom end of the spring 230 is connected to the cable clamp block 210, so that when the cable connector needs to be fixed, the cable clamp of the cable connector can be firstly fixed. On the partition 122, the sealing ring 124 on the partition 122 can prevent rainwater that enters the installation tube 1 10 and the installation tube 2 120 from entering the cable joint; then the block 12 on the installation tube 2 120 is inserted into the groove 111 on the installation tube 1 10, and then the two installation rings 001 are installed by bolts, and the installation tube 1 10 and the installation tube 2 120 can be installed; and at this time, under the elastic action of the spring 230, the sealing arc plate 240 is moved close to the cable and forms a seal with the cable, which can reduce the damage of the cable joint caused by rainwater entering the tube cavity of the installation tube 1 10 and the installation tube 2 120.

[0035] Based on the above content and the accompanying drawings, those skilled in the art can understand and implement the utility model. In addition, any non-creative modifications made to the utility model by those skilled in the art without making creative work still fall within the scope of protection of the utility model.

Claims

1. A power cable joint fault diagnosis device, comprising a fixing device (100) for installing a cable joint, characterized in that: The left and right ends of the fixing device (100) are provided with sealing devices (200) for waterproofing the cylindrical cavity of the fixing device (100); The sealing device (200) comprises a cable clamp block (210) arranged on the left and right ends of the fixing device (100); a sealing arc plate (240) for wrapping and sealing the cable placed in the fixing device (100) is embedded in the block body of the cable clamp block (210); a fixing plate (220) for driving the sealing arc plate (240) to move up and down is fixedly installed at the front and rear ends of the sealing arc plate (240); and a spring (230) for driving the fixing plate (220) to move up and down is arranged at the bottom end of the fixing plate (220).

2. A power cable joint fault diagnosis device according to claim 1, characterized in that: The fixing device (100) comprises a first installation cylinder (110) for clamping and fixing the cable connector, and a second installation cylinder (120) is clamped and connected below the first installation cylinder (110) and cooperates with the first installation cylinder (110) to fix the cable connector.

3. A power cable joint fault diagnosis device according to claim 2, characterized in that: The bottom end of the body of the installation cylinder 1 (110) is provided with a card slot 1 (111) for easy card connection with the installation cylinder 2 (120).

4. A power cable joint fault diagnosis device according to claim 3, characterized in that: A clamping block (121) is fixedly installed on the top of the second installation tube (120) and is connected to the first clamping slot (111). A partition (122) for clamping the cable connector is fixedly installed in the cavity of the second installation tube (120). There are two partitions (122), which are distributed in a linear array in the cavity of the second installation tube (120).

5. A power cable joint fault diagnosis device according to claim 4, characterized in that: A groove (123) is provided on the top of the plate body of the partition (122), and the groove (123) is in a semicircular arc shape. A sealing ring (124) for sealing a cable joint is clamped in the groove of the groove (123).

6. A power cable joint fault diagnosis device according to claim 2, characterized in that: A temperature sensor (003) for diagnosing cable joint faults is arranged in the cavity of the second installation tube (120), a battery (002) for providing power to the temperature sensor (003) is arranged on the left side of the temperature sensor (003), and a signal transmitter (004) for transmitting a detection signal of the temperature sensor (003) is arranged on the left side of the battery (002).

7. A power cable joint fault diagnosis device according to claim 2, characterized in that: A mounting ring (001) for fixedly connecting mounting tube one (110) and mounting tube two (120) is fixedly mounted on the top of the (110), and there are two mounting rings (001), which are symmetrically distributed on the cylinder bodies of mounting tube one (110) and mounting tube two (120) in an upper and lower manner.

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