A nuclear power cable heat shrink terminal insulation testing device

Abstract

This utility model relates to the field of nuclear power cables, and particularly to an insulation testing device for heat-shrinkable terminations of nuclear power cables. It includes a testing box with an operating port at the top of one outer wall and a door installed at the operating port. The inner walls of both sides of the testing box have fixing structures, and a drain pipe is connected to the bottom outer wall of one side of the testing box. The fixing structures include an adjustment groove on the inner wall of the testing box, an adjustment screw rotatably connected to the center of the adjustment groove, and a threaded block threaded to the outer wall of the adjustment screw. A support rod is welded to one outer wall of the threaded block, a rotating hole at the center of one end of the support rod, and a mounting plate rotatably connected to the rotating hole. A fixing ring on the mounting plate rotates on the support rod through the rotating hole. A positioning pin is inserted into a positioning hole to fix the rotation angle. The fixing ring's orientation is adjusted according to the wire-passing hole on the testing box for easy adjustment.

Description

Technical Field

[0001] This utility model relates to the field of nuclear power cable technology, and in particular to a device for testing the insulation of heat-shrinkable terminations of nuclear power cables. Background Technology

[0002] The fusion of light atomic nuclei and the fission of heavy atomic nuclei can release energy, which are called nuclear fusion energy and nuclear fission energy, respectively. A large amount of heat is released during fusion or fission, and the energy is converted from nuclear energy to mechanical energy to electrical energy. This electricity can be called nuclear power.

[0003] A cable is a device for transmitting electrical energy or signals, typically composed of several or groups of conductors. Types of cables include power cables, control cables, compensating cables, shielded cables, high-temperature cables, computer cables, signal cables, coaxial cables, fire-resistant cables, marine cables, mining cables, aluminum alloy cables, and more.

[0004] Cable heat shrink terminations are electrical accessories used for cable connections. They are widely used for terminating cross-linked or oil-immersed cables with voltage levels of 35kV and below. After the cables are wired, heat shrink terminations are needed at the connection points to reinforce the connection while ensuring insulation and waterproofing. However, performance testing of heat shrink terminations after installation is not very intuitive. Utility Model Content

[0005] The purpose of this invention is to address the aforementioned problems and shortcomings by proposing a device for testing the insulation performance of heat-shrinkable terminations for nuclear power cables.

[0006] To achieve the above objectives, the present invention adopts the following technical solution:

[0007] An insulation testing device for heat-shrinkable terminations of nuclear power cables includes a testing box. An operating port is located at the top of one outer wall of the testing box, and a door is installed at the operating port. Fixing structures are provided on both inner walls of the testing box, and a drain pipe is connected to the bottom outer wall of one side of the testing box. The fixing structure includes an adjustment groove on the inner wall of the testing box, an adjustment screw rotatably connected to the center of the adjustment groove, and a threaded block threaded to the outer wall of the adjustment screw. A support rod is welded to one outer wall of the threaded block, a rotating hole is located at the center of one end of the support rod, and a mounting plate rotatably connected to the rotating hole.

[0008] Preferably, a fixing ring is installed at the center of one side of the outer wall of the mounting plate, and a threaded hole is opened on the top outer wall of the fixing ring, and a fastening screw is threaded into the threaded hole.

[0009] Preferably, the mounting plate and the support rod overlap with equidistant positioning holes, and positioning pins are inserted into the positioning holes.

[0010] Preferably, the outer wall of the detection box has a drive hole at the top of the adjustment groove, and a drive motor is installed at the drive hole. The output shaft of the drive motor is connected to one end of the outer wall of the adjustment screw.

[0011] Preferably, the outer walls on both sides and the outer walls on both sides of the top of the testing box are provided with wire holes, and the threaded block is slidably connected to the inner wall of the adjusting groove, and one end of the support rod is slidably connected to the inner outer wall of the testing box.

[0012] Preferably, a valve is installed on the outer wall of one end of the drain pipe, and a multimeter is installed at the bottom of the outer wall of one side of the test box, with the test end of the multimeter located on the bottom inner wall of the test box.

[0013] Preferably, the drive motor is connected to the switch via a wire, and the switch is connected to the power supply via a wire.

[0014] Preferably, the test box is provided with test cables at the wire hole and the fixing ring, and one end of the fastening screw is in contact with the outer wall of the test cable.

[0015] The beneficial effects of this utility model are as follows:

[0016] 1. The fixing ring on the mounting plate rotates on the support rod through the rotating hole. The positioning pin is inserted into the positioning hole to fix the rotation angle. The orientation of the fixing ring can be adjusted according to the wire hole on the test box for easy adjustment.

[0017] 2. The drive motor rotates the adjusting screw in the adjusting groove through the drive hole, causing the fixing ring to enter the liquid in the test box. This makes it easy to use a multimeter to test the insulation. If the heat shrink terminal is not properly handled at the test cable, the liquid will carry the test voltage. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the internal structure of an insulation testing device for heat-shrinkable terminations of nuclear power cables proposed in this utility model;

[0019] Figure 2 This is a cross-sectional structural schematic diagram of an insulation testing device for heat-shrinkable terminals of nuclear power cables proposed in this utility model;

[0020] Figure 3 This is a schematic diagram of the support rod structure of an insulation testing device for heat-shrinkable terminals of nuclear power cables proposed in this utility model;

[0021] Figure 4 This is a schematic diagram of the overall structure of an insulation testing device for heat-shrinkable terminals of nuclear power cables proposed in this utility model.

[0022] In the diagram: 1. Testing box, 2. Operating port, 3. Box door, 4. Fixing structure, 5. Drain pipe, 6. Valve, 7. Adjusting groove, 8. Adjusting screw, 9. Drive hole, 10. Drive motor, 11. Threaded block, 12. Support rod, 13. Rotating hole, 14. Mounting plate, 15. Positioning hole, 16. Fixing ring, 17. Fastening screw, 18. Wire hole, 19. Multimeter. Detailed Implementation

[0023] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0024] Example 1:

[0025] Reference Figure 1-4 As shown, an insulation testing device for heat-shrinkable terminals of nuclear power cables includes a testing box 1. An operation port 2 is provided at the top of one side of the outer wall of the testing box 1, and a door 3 is installed at the operation port 2. Fixing structures 4 are provided on both sides of the inner wall of the testing box 1, and a drain pipe 5 is connected to the bottom outer wall of one side of the testing box 1.

[0026] The outer wall of the detection box 1 is provided with a drive hole 9 at the top of the adjustment groove 7, and a drive motor 10 is installed at the drive hole 9. The output shaft of the drive motor 10 is connected to one end of the outer wall of the adjustment screw 8.

[0027] A valve 6 is installed on the outer wall of one end of the drain pipe 5, and a multimeter 19 is installed at the bottom of the outer wall of one side of the test box 1. The test end of the multimeter 19 is located at the bottom inner wall of the test box 1.

[0028] The drive motor 10 is connected to the switch via a wire, and the switch is connected to the power supply via a wire.

[0029] Example 2:

[0030] Reference Figure 1-4 As shown, the fixed structure 4 includes an adjustment groove 7 opened on the inner wall of the detection box 1, an adjustment screw 8 rotatably connected to the center of the adjustment groove 7, a threaded block 11 threadedly connected to the outer wall of the adjustment screw 8, a support rod 12 welded to one side of the outer wall of the threaded block 11, a rotating hole 13 opened at the center of one end of the support rod 12, and a mounting plate 14 rotatably connected to the rotating hole 13.

[0031] A fixing ring 16 is installed at the center of one side outer wall of the mounting plate 14, and a threaded hole is opened on the top outer wall of the fixing ring 16, and a fastening screw 17 is threadedly connected in the threaded hole.

[0032] The mounting plate 14 and the support rod 12 overlap with equidistantly distributed positioning holes 15, and positioning pins are inserted into the positioning holes 15.

[0033] The outer walls on both sides and the outer walls on both sides of the top of the test box 1 are provided with wire holes 18, and the threaded block 11 is slidably connected to the inner wall of the adjustment groove 7, and one end of the support rod 12 is slidably connected to the inner outer wall of the test box 1.

[0034] The test box 1 is equipped with test cables at the wire hole 18 and the fixing ring 16 respectively, and one end of the fastening screw 17 is in contact with the outer wall of the test cable.

[0035] The fixing ring 16 on the mounting plate 14 rotates on the support rod 12 through the rotating hole 13. The positioning pin is inserted into the positioning hole 15 to fix the rotation angle. The fixing ring 16 can be adjusted according to the wire hole 18 on the detection box 1 for easy adjustment.

[0036] The drive motor 10 drives the adjusting screw 8 in the adjusting groove 7 to rotate in the drive hole 9, so that the fixing ring 16 enters the liquid in the test box 1, which makes it easy to use the multimeter 19 to test the insulation. If the heat shrink terminal is not properly handled at the test cable, the test electricity will be carried in the liquid.

[0037] By using a multimeter 19 to check whether the value in the liquid increases, the reliability of the insulation and protection of the heat-shrinkable terminal at the connection of the test cable can be determined, facilitating intuitive testing.

[0038] The fastening screw 17 on the rotating retaining ring 16 secures the test cable in the retaining ring 16.

[0039] Working principle: In use, the two test cables to be connected are inserted into the test box 1 through the wire holes 18 on both sides or the top two ends of the test box 1. One end of the test cable is stripped and connected. After the other end of the test cable is passed into the fixing ring 16, the stripped ends of the two test cables are connected. The fastening screw 17 on the fixing ring 16 is rotated to fix the test cable in the fixing ring 16. After opening the box door 3, test liquid is added to the bottom inner wall of the test box 1. The drive motor 10 is started to drive the adjusting screw 8 in the adjusting groove 7 to rotate. After the adjusting screw 8 rotates, it drives the fixing ring 16 on the mounting plate 14 and the heat shrink terminal connection of the test cable to descend through the threaded block 11 and the support rod 12, so that the connection of the test cable is immersed in the liquid of the test box 1. The multimeter 19 is used to detect whether the value of the liquid increases, to determine whether the insulation and protection of the heat shrink terminal of the test cable connection is reliable, which is convenient for intuitive testing.

[0040] The exemplary embodiments of the present invention have been described in detail herein with reference to examples. However, those skilled in the art will understand that various modifications and alterations can be made to the specific embodiments described above without departing from the spirit of the present invention, and various combinations can be made to the various technical features and structures proposed in the present invention without exceeding the protection scope of the present invention, which is determined by the appended claims. The foregoing description of specific exemplary embodiments of the present invention is not intended to limit the present invention to the precise forms disclosed, and it is obvious that many changes and variations can be made based on the above teachings. The exemplary embodiments were chosen and described in order to explain the specific principles of the present invention and its practical applications, thereby enabling those skilled in the art to implement and utilize various different exemplary embodiments of the present invention, as well as various different choices and variations. The scope of the present invention is intended to be defined by the claims and their equivalents.

Claims

1. An insulation testing device for heat-shrinkable terminations of nuclear power cables, comprising a testing box (1), characterized in that, An operation port (2) is provided at the top of one side of the outer wall of the test box (1), and a door (3) is installed at the operation port (2) of the test box (1). A fixing structure (4) is provided on both sides of the inner wall of the test box (1), and a drain pipe (5) is connected to the bottom outer wall of one side of the test box (1). The fixed structure (4) includes an adjustment groove (7) opened on the inner wall of the test box (1), an adjustment screw (8) rotatably connected to the center of the adjustment groove (7), a threaded block (11) threadedly connected to the outer wall of the adjustment screw (8), a support rod (12) welded to one side of the outer wall of the threaded block (11), a rotating hole (13) opened at the center of one end of the support rod (12), and a mounting plate (14) rotatably connected to the rotating hole (13).

2. The insulation testing device for heat-shrinkable terminations of nuclear power cables according to claim 1, characterized in that, A fixing ring (16) is installed at the center of one side outer wall of the mounting plate (14), and a threaded hole is opened on the top outer wall of the fixing ring (16), and a fastening screw (17) is threaded into the threaded hole.

3. The insulation testing device for heat-shrinkable terminations of nuclear power cables according to claim 1, characterized in that, The mounting plate (14) and the support rod (12) have equidistantly distributed positioning holes (15), and positioning pins are inserted into the positioning holes (15).

4. The insulation testing device for heat-shrinkable terminations of nuclear power cables according to claim 1, characterized in that, The outer wall of the detection box (1) is provided with a drive hole (9) at the top of the adjustment groove (7), and a drive motor (10) is installed at the drive hole (9). The output shaft of the drive motor (10) is connected to one end of the outer wall of the adjustment screw (8).

5. The insulation testing device for heat-shrinkable terminations of nuclear power cables according to claim 1, characterized in that, The outer walls on both sides and the outer walls on both sides of the top of the test box (1) are provided with wire holes (18), and the threaded block (11) is slidably connected to the inner wall of the adjustment groove (7), and one end of the support rod (12) is slidably connected to the inner outer wall of the test box (1).

6. The insulation testing device for heat-shrinkable terminations of nuclear power cables according to claim 1, characterized in that, A valve (6) is installed on the outer wall of one end of the drain pipe (5), and a multimeter (19) is installed at the bottom of the outer wall of one side of the test box (1). The test end of the multimeter (19) is located at the bottom inner wall of the test box (1).

7. The insulation testing device for heat-shrinkable terminations of nuclear power cables according to claim 4, characterized in that, The drive motor (10) is connected to the switch via a wire, and the switch is connected to the power supply via a wire.

8. The insulation testing device for heat-shrinkable terminations of nuclear power cables according to claim 4, characterized in that, The test box (1) is equipped with test cables at the wire hole (18) and the fixing ring (16), and one end of the fastening screw (17) is in contact with the outer wall of the test cable.

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