A high-voltage cable fault location online monitoring device

Abstract

This utility model relates to the field of high-voltage cable fault monitoring technology, specifically a high-voltage cable fault location online monitoring device. It includes a data acquisition sensor fixedly installed on the outside of the cable and a protective housing fixedly installed on the outside of the sensor. The protective housing includes a first protective housing and a second protective housing. The first protective housing has a first protective nozzle integrally injection-molded on both its left and right sides, and the second protective housing has a second protective nozzle integrally injection-molded on both its left and right sides. The combination of the first and second protective housings forms a protective layer for both the first and second sensor blocks. The arc-shaped surfaces of the first and second protective nozzles ensure smooth contact with the cable, solving the problem that the edges of the first and second protective nozzles can easily damage the cable under thermal expansion and contraction, reducing the probability of cable sheath damage and cracking, and effectively protecting the cable.

Description

Technical Field

[0001] This utility model relates to the field of high-voltage cable fault monitoring technology, specifically to an online monitoring device for locating high-voltage cable faults. Background Technology

[0002] With the continuous development of my country's power industry, power cables are being used more and more widely in power grid construction and transformation. However, due to material problems, construction process problems, operating environment problems, external force damage problems, or after reaching a certain number of years, cables and joints often experience insulation breakdown, causing accidents. Because of the high voltage and large capacity, each accident can cause significant economic losses.

[0003] In the prior art, such as the "Online Monitoring Device for High Voltage Cable Fault Location" with Chinese Patent Publication No. CN219871605U, this utility model, by setting up a first housing, a second housing, a second fixing plate, a third fixing plate, a rubber pad, a rubber ring, a groove, a cover plate, a locking block, a fixing sleeve, and a washer, can protect the sensor therein and extend its service life.

[0004] In the aforementioned prior art, although the sensor can be protected by the double-layer shell structure composed of the first shell and the second shell, the contact point between the end edge of the double-layer shell structure outside the sensor and the cable is easily damaged by thermal expansion and contraction, increasing the probability of cable sheath damage and cracking, which is not conducive to cable protection. Utility Model Content

[0005] The purpose of this invention is to provide an online monitoring device for locating faults in high-voltage cables, which has the feature of protecting the cable sheath.

[0006] To achieve the above objectives, this utility model provides the following technical solution: an online monitoring device for locating faults in high-voltage cables, comprising a data acquisition sensor fixedly installed on the outside of the cable and a protective housing fixedly installed on the outside of the data acquisition sensor;

[0007] The protective housing includes a first protective housing and a second protective housing. The first protective housing has a first protective nozzle integrally injection molded on both the left and right sides. The second protective housing has a second protective nozzle integrally injection molded on both the left and right sides. Both the first protective nozzle and the second protective nozzle have an arc surface on the side closest to the cable.

[0008] The data acquisition sensor includes a first sensing block and a second sensing block. The first sensing block has a first fastening ring integrally injection molded on both its left and right sides, and the second sensing block has a second fastening ring integrally injection molded on both its left and right sides. The first fastening ring and the second fastening ring are in contact with the cable.

[0009] To facilitate cable protection, in a preferred embodiment of the online monitoring device for high-voltage cable fault location according to this utility model, a first protective pad is fixedly installed on the inner arc surface of the first protective nozzle, and the first protective pad is in sealed and compressed contact with the cable.

[0010] To facilitate cable protection, in a preferred embodiment of the online monitoring device for high-voltage cable fault location according to this utility model, a second protective pad is fixedly installed on the inner arc surface of the second protective nozzle, and the second protective pad is in sealed and compressed contact with the cable.

[0011] To facilitate limiting the position of the acquisition sensor, in a preferred embodiment of the online monitoring device for high-voltage cable fault location according to this utility model, a first limiting sleeve is fixedly installed on the inner side of the first protective shell, and a second limiting sleeve is fixedly installed on the inner side of the second protective shell. The annular structure formed by the first limiting sleeve and the second limiting sleeve is sleeved on the outer side of the circular structure formed by the first fastening ring and the second fastening ring.

[0012] To facilitate the fixed installation of the protective housing, in a preferred embodiment of the high-voltage cable fault location online monitoring device of this utility model, a first bolt is installed through the first protective housing and the first protective nozzle on the same side, and a first nut is fixedly installed on the second protective housing and the second protective nozzle on the same side, with the first bolt and the first nut being threadedly connected.

[0013] To facilitate the fixed installation of the acquisition sensor, in a preferred embodiment of the online monitoring device for high-voltage cable fault location according to this utility model, a second bolt is passed through the first sensing block and the first fastening ring on the same side, and a second nut is fixedly installed on the second sensing block and the second fastening ring on the same side, with the second bolt and the second nut being threadedly connected.

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

[0015] The combination of the first and second protective shells forms a protective layer for the first and second sensing blocks. The arc-shaped surfaces of the first and second protective nozzles ensure smooth contact with the cable, solving the problem that the edges of the first and second protective nozzles can easily damage the cable under thermal expansion and contraction. The first and second protective pads installed on the inner circular surfaces of the first and second protective nozzles further protect the cable, reducing the probability of damage and cracking of the cable sheath, thus providing effective protection for the cable. Attached Figure Description

[0016] Figure 1 This is a top-down perspective view of the present invention.

[0017] Figure 2This is a top-view perspective structural diagram of the present invention.

[0018] Figure 3 This is a partial cross-sectional structural diagram of the present invention;

[0019] Figure 4 This is a reference diagram for installing the data acquisition sensor of this utility model.

[0020] In the diagram: 1. First protective shell; 2. Second protective shell; 3. Cable; 4. First nut; 5. First bolt; 6. First protective nozzle; 7. Second protective nozzle; 8. First protective pad; 9. Second protective pad; 10. First sensor block; 11. First fastening ring; 12. Second sensor block; 13. Second fastening ring; 14. Second nut; 15. Second bolt; 16. First limiting sleeve; 17. Second limiting sleeve. Detailed Implementation

[0021] To make the objectives, technical solutions, and advantages of this utility model clearer, the following detailed description is provided in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of this utility model and are not intended to limit it. In the description of this utility model, it should be understood that the terms "length," "width," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must be set in a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0022] Please see Figures 1 to 4 A high-voltage cable fault location online monitoring device includes a data acquisition sensor fixedly installed on the outside of the cable 3 and a protective housing fixedly installed on the outside of the data acquisition sensor.

[0023] The protective shell includes a first protective shell 1 and a second protective shell 2. The first protective shell 1 has a first protective nozzle 6 integrally injection molded on both the left and right sides. The second protective shell 2 has a second protective nozzle 7 integrally injection molded on both the left and right sides. The first protective nozzle 6 and the second protective nozzle 7 are provided with an arc surface on the side near the cable 3.

[0024] The data acquisition sensor includes a first sensing block 10 and a second sensing block 12. The first sensing block 10 has a first fastening ring 11 integrally injection molded on both the left and right sides, and the second sensing block 12 has a second fastening ring 13 integrally injection molded on both the left and right sides. The first fastening ring 11 and the second fastening ring 13 are in contact with the cable 3.

[0025] In this embodiment: by setting the first protective nozzle 6 and the second protective nozzle 7, it is convenient to form a protective structure for the first sensing block 10 and the second sensing block 12 by combining the first protective shell 1 and the second protective shell 2. The arc surfaces designed by the first protective nozzle 6 and the second protective nozzle 7 can make smooth contact with the cable 3, reducing the damage to the cable 3 caused by the end edges of the first protective nozzle 6 and the second protective nozzle 7.

[0026] As a technical optimization of this utility model, a first protective pad 8 is fixedly installed on the inner arc surface of the first protective nozzle 6, and the first protective pad 8 is in sealed and squeezed contact with the cable 3; a second protective pad 9 is fixedly installed on the inner arc surface of the second protective nozzle 7, and the second protective pad 9 is in sealed and squeezed contact with the cable 3.

[0027] In this embodiment: by setting the first protective pad 8 and the second protective pad 9, the first protective pad 8 and the second protective pad 9 installed on the inner circular surfaces of the first protective nozzle 6 and the second protective nozzle 7 can better protect the cable 3, so that the cable 3 and the first protective pad 8 and the second protective pad 9 play an elastic buffer contact role, which is beneficial to the protection of the cable 3.

[0028] As a technical optimization of this utility model, a first limiting sleeve 16 is fixedly installed on the inner side of the first protective shell 1, and a second limiting sleeve 17 is fixedly installed on the inner side of the second protective shell 2. The annular structure formed by the first limiting sleeve 16 and the second limiting sleeve 17 is sleeved on the outer side of the circular structure formed by the first fastening ring 11 and the second fastening ring 13.

[0029] In this embodiment: by setting the first limiting sleeve 16 and the second limiting sleeve 17, when the first protective shell 1 and the second protective shell 2 are installed together, the first limiting sleeve 16 and the second limiting sleeve 17 can be sleeved on the first fastening ring 11 and the second fastening ring 13, which can limit the movement of the overall position of the first sensing block 10 and the second sensing block 12, so that the acquisition sensor can better monitor the operation.

[0030] As a technical optimization of this utility model, a first bolt 5 is installed through the first protective shell 1 and the first protective nozzle 6 on the same side, and a first nut 4 is fixedly installed on the second protective shell 2 and the second protective nozzle 7 on the same side, and the first bolt 5 and the first nut 4 are threadedly fixedly connected.

[0031] In this embodiment: by setting a first nut 4, the first bolt 5 can pass through one side of the first protective shell 1 and be threaded and fixed to the first nut 4, so that the first protective shell 1 and the second protective shell 2 are connected and fixed together. The first nut 4 can protect one end of the first bolt 5 and prevent corrosion from rainwater.

[0032] As a technical optimization of this utility model, a second bolt 15 is passed through the first sensing block 10 and the first fastening ring 11 on the same side, and a second nut 14 is fixedly installed on the same side of the second sensing block 12 and the second fastening ring 13, and the second bolt 15 and the second nut 14 are threadedly fixedly connected.

[0033] In this embodiment: by setting a second nut 14 and a second bolt 15, the second bolt 15 can pass through one side of the first sensing block 10 and be threaded to the second nut 14, so that the first sensing block 10 and the second sensing block 12 can be connected and fixed together to make contact with the cable 3 and better monitor the operation.

[0034] Working principle: such as Figure 4 As shown, the second bolt 15 passes through one side of the first sensor block 10 and is threadedly fixed to the second nut 14, thus fixing the first sensor block 10 and the second sensor block 12 together. The first sensor block 10 and the second sensor block 12 are then properly installed and brought into contact with the cable 3. Figure 1 As shown, the first limiting sleeve 16 and the second limiting sleeve 17 provided on the inner side of the protective shell are used to fit the left and right ends of the acquisition sensor, so that the first limiting sleeve 16 and the second limiting sleeve 17 fit the first fastening ring 11 and the second fastening ring 13. The first bolt 5 passes through one side of the first protective shell 1 and is threaded to the first nut 4, so that the first protective shell 1 and the second protective shell 2 are connected and fixed together, so that the protective shell protects the acquisition sensor. The arc surfaces designed by the first protective nozzle 6 and the second protective nozzle 7 can make smooth contact with the cable 3. In conjunction with the first protective pad 8 and the second protective pad 9, they play an elastic buffering role for the cable 3, which better protects the cable 3.

[0035] All standard parts used in this utility model can be purchased from the market. Irregular parts can be customized according to the description and drawings. The specific connection methods of each part adopt conventional methods such as riveting and welding that are mature in the prior art. The machinery, parts and equipment adopt conventional models in the prior art. In addition, the circuit connection adopts conventional connection methods in the prior art, which will not be described in detail here. The contents not described in detail in this specification belong to the prior art known to those skilled in the art. All electrical equipment in this utility model is powered by an external power source.

[0036] The above are merely preferred embodiments of the present utility model and are not intended to limit the present utility model. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A high-voltage cable fault location online monitoring device, comprising a data acquisition sensor fixedly installed on the outside of the cable (3) and a protective housing fixedly installed on the outside of the data acquisition sensor, characterized in that: The protective shell includes a first protective shell (1) and a second protective shell (2). The first protective shell (1) has a first protective nozzle (6) integrally injection molded on both the left and right sides. The second protective shell (2) has a second protective nozzle (7) integrally injection molded on both the left and right sides. The first protective nozzle (6) and the second protective nozzle (7) are provided with an arc surface on the side of the cable (3). The sensor includes a first sensing block (10) and a second sensing block (12). The first sensing block (10) has a first fastening ring (11) integrally injection molded on both the left and right sides. The second sensing block (12) has a second fastening ring (13) integrally injection molded on both the left and right sides. The first fastening ring (11) and the second fastening ring (13) are in contact with the cable (3).

2. The online monitoring device for locating high-voltage cable faults according to claim 1, characterized in that: The inner arc surface of the first protective nozzle (6) is fixedly equipped with a first protective pad (8), and the first protective pad (8) is in sealed and squeezed contact with the cable (3).

3. The online monitoring device for locating high-voltage cable faults according to claim 1, characterized in that: The inner arc surface of the second protective nozzle (7) is fixedly equipped with a second protective pad (9), and the second protective pad (9) is in sealed and squeezed contact with the cable (3).

4. The online monitoring device for locating high-voltage cable faults according to claim 1, characterized in that: The first protective shell (1) is fixedly installed with a first limiting sleeve (16) on its inner side, and the second protective shell (2) is fixedly installed with a second limiting sleeve (17) on its inner side. The annular structure formed by the first limiting sleeve (16) and the second limiting sleeve (17) is sleeved on the outer side of the circular structure formed by the first fastening ring (11) and the second fastening ring (13).

5. The online monitoring device for locating high-voltage cable faults according to claim 1, characterized in that: The first protective shell (1) and the first protective nozzle (6) are both connected by a first bolt (5) through the first protective shell (1) and the second protective nozzle (7) are both fixedly connected by a first nut (4) through the first protective shell (1) and the second protective nozzle (6) through the first protective shell (1) and the second protective nozzle (6) through the first protective shell (1) and the first nut (4) through the first protective nozzle (6) through the first protective shell (1) and the first protective nozzle (6 ...

6. The online monitoring device for locating high-voltage cable faults according to claim 1, characterized in that: The first sensing block (10) and the first fastening ring (11) are both connected by a second bolt (15), and the second sensing block (12) and the second fastening ring (13) are both fixedly installed with a second nut (14) on the same side. The second bolt (15) and the second nut (14) are threadedly connected.

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