Fixing and protecting device for wire and cable high-voltage test

Abstract

The utility model provides a fixed protection device for a wire and cable high-voltage test, which belongs to the field of wire and cable tests, and comprises a base, a plurality of placing grooves are formed in the base, a generator, an exciting transformer, a reactor and a capacitive voltage divider are respectively mounted in the placing grooves, a support frame is fixedly connected to the upper end face of the base, and the upper end face of the support frame is fixedly connected with a power supply. A mounting groove is formed in the supporting frame, a variable-frequency power source is mounted in the mounting groove, and a winding assembly is mounted on the base. And a fixing assembly. According to the utility model, the reactor and the capacitive voltage divider can be sleeved through the fixing ring, so that the reactor and the capacitive voltage divider are prevented from toppling due to external force, the stability of the device is improved, accidents during high-voltage test are avoided, the safety of the test process is improved, an overlong connecting wire can be wound on the winding roller, and the service life of the device is prolonged. Tediousness when a user installs and disassembles the device due to intertwining of the connecting lines is avoided, and safety accidents can be reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of wire and cable testing, in particular to a fixing protection device for high-voltage testing of wires and cables. Background Art

[0002] The withstand voltage test method for high-voltage cables mainly includes the series resonant withstand voltage test. By connecting the frequency converter, the power supply frequency is adjusted within the range of 30-300Hz. When the output frequency of the frequency converter cabinet is adjusted to reach the resonance condition, a resonant high voltage is generated on the test product. This method is widely used on site because it is convenient to adjust the equipment to the resonance point.

[0003] When conducting a series resonant withstand voltage test, the generator, excitation transformer, reactor, capacitor divider and frequency conversion power supply are generally placed on the ground in sequence, and then connected in series with connecting wires. However, the reactor and capacitor divider are cylindrical in shape, and are unstable when placed on the ground. Especially when testing external cables, the reactor and capacitor divider are easily affected by external interference and fall over, causing corresponding safety accidents. In addition, when the connecting wires are long, the entanglement between the connecting wires makes it cumbersome for users to install and disassemble the device, and the entanglement of the connecting wires can easily lead to safety accidents. Utility Model Content

[0004] In view of the deficiencies in the prior art, the utility model provides a fixed protection device for high voltage testing of electric wires and cables.

[0005] The embodiment of the utility model provides a fixed protection device for high voltage testing of electric wires and cables, comprising:

[0006] A base, wherein a plurality of placement slots are provided on the base, wherein a generator, an excitation transformer, a reactor and a capacitive voltage divider are respectively installed in the plurality of placement slots, wherein a support frame is fixedly connected to the upper end surface of the base, wherein an installation slot is provided on the support frame, wherein a variable frequency power supply is installed in the installation slot, and a winding assembly is installed on the base;

[0007] Fixing component; the fixing component includes two vertical plates, both of the two vertical plates are fixedly connected to the upper end surface of the base, fixing grooves are formed on both of the two vertical plates, sliding blocks are slidably arranged in the two fixing grooves respectively, a connecting plate is fixedly connected between the two vertical plates, a rotating groove is formed on the connecting plate, threaded rods are rotatably penetrated through both of the two vertical plates, both of the two threaded rods are rotatably penetrated through the connecting plate, both of the two threaded rods are rotatably connected to the inner wall of the rotating groove, the two threaded rods are respectively rotatably connected to the inner walls of the two fixing grooves, the two threaded rods respectively threadedly penetrate through the two sliding blocks, fixing rings are fixedly connected to both of the two sliding blocks, the two fixing rings respectively match with the reactor and the capacitor voltage divider, worm wheels are fixedly connected to the side walls of the two threaded rods, a worm is rotatably connected to the inner wall of the rotating groove, the worm matches with the worm wheel, a rotating rod is rotatably penetrated through the connecting plate, and one end of the rotating rod is fixedly connected to the worm.

[0008] Further, the winding component includes a plurality of connecting frames, all of the plurality of connecting frames are fixedly connected to the upper end surface of the base, winding rollers are fixedly connected to all of the plurality of connecting frames, a first connecting wire is connected between the generator and the frequency conversion power supply, a second connecting wire is connected between the frequency conversion power supply and the excitation transformer, a third connecting wire is connected between the excitation transformer and the reactor, the third connecting wire is installed on the side wall of one of the winding rollers, a fourth connecting wire is connected between the reactor and the capacitor voltage divider, and a fifth connecting wire is installed on the capacitor voltage divider.

[0009] Further, a plurality of feet are fixedly connected to the lower end surface of the base.

[0010] Further, a handle is fixedly connected to the end of the rotating rod away from the worm.

[0011] Further, buffer cushions are arranged on the inner walls of the two fixing rings.

[0012] Further, anti-slip patterns are arranged in all of the plurality of placing grooves.

[0013] Compared with the prior art, the utility model has the following beneficial effects:

[0014] The user sequentially places the generator, the excitation transformer, the reactor and the capacitor voltage divider into the placing grooves, and then places the frequency conversion power supply into the installation groove to prevent each device from moving. Then the user rotates the handle to lower the fixing rings, and the fixing rings can sleeve the reactor and the capacitor voltage divider to prevent the reactor and the capacitor voltage divider from tipping due to external forces, improving the stability of the device, avoiding accidents during the high-voltage test, and enhancing the safety of the test process.

[0015] The user connects the first connecting wire, the second connecting wire, the third connecting wire, the fourth connecting wire and the fifth connecting wire in sequence, and the too long connecting wires can be wound around the wire winding roller, avoiding the entanglement between the connecting wires and making it cumbersome for the user to install and disassemble the device, and reducing the occurrence of safety accidents. Description of the Drawings

[0016] Figure 1 It is a three-dimensional schematic diagram of the structure of a fixed protection device for high-voltage tests of electric wires and cables in the embodiment of the present utility model.

[0017] Figure 2 It is a top view of the three-dimensional structure of a fixed protection device for high-voltage tests of electric wires and cables in the embodiment of the present utility model.

[0018] Figure 3 It is a side view of the three-dimensional structure of a fixed protection device for high-voltage tests of electric wires and cables in the embodiment of the present utility model.

[0019] In the above-mentioned drawings: 1 base, 2 placement groove, 3 generator, 4 excitation transformer, 5 reactor, 6 capacitor voltage divider, 7 support frame, 8 grip, 9 frequency conversion power supply, 10 vertical plate, 11 fixing groove, 12 sliding block, 13 connecting plate, 14 rotating groove, 15 threaded rod, 16 fixing ring, 17 worm gear, 18 worm, 19 connecting frame, 20 wire winding roller, 21 third connecting wire, 22 foot pad. Detailed Embodiment

[0020] The technical solutions in the present utility model will be further described below in conjunction with the drawings and embodiments.

[0021] As Figures 1 - 3 shown, the embodiment of the present utility model provides a fixed protection device for high-voltage tests of electric wires and cables, including:

[0022] Base 1, the lower end face of the base 1 is fixedly connected with a plurality of foot pads 22, which improves the stability of the device. A plurality of placement grooves 2 are opened on the base 1, and a generator 3, an excitation transformer 4, a reactor 5 and a capacitor voltage divider 6 are respectively installed in the plurality of placement grooves 2. Anti-slip patterns are provided in the plurality of placement grooves 2, which improves the stability of the device. The upper end face of the base 1 is fixedly connected with a support frame 7, and an installation groove is opened on the support frame 7. A frequency conversion power supply 9 is installed in the installation groove. A wire winding assembly is installed on the base 1. The generator 3, the excitation transformer 4, the reactor 5 and the capacitor voltage divider 6 are all prior arts. The electrical equipment is tested by the series resonance method. The series resonance test device also has an important application in the withstand voltage test of electrical equipment. By adjusting the circuit parameters, the device under test reaches the resonance state at a specific frequency, so as to test its insulation performance and withstand voltage ability. It will not be elaborated here;

[0023] Fixing component; the fixing component includes two vertical plates 10, both of the two vertical plates 10 are fixedly connected to the upper end surface of the base 1, fixing grooves 11 are formed on both of the two vertical plates 10, sliding blocks 12 are slidably arranged in both of the two fixing grooves 11, a connecting plate 13 is fixedly connected between the two vertical plates 10, a rotating groove 14 is formed on the connecting plate 13, threaded rods 15 are rotatably penetrated through both of the two vertical plates 10, both of the two threaded rods 15 are rotatably penetrated through the connecting plate 13, both of the two threaded rods 15 are rotatably connected to the inner wall of the rotating groove 14, both of the two threaded rods 15 are respectively rotatably connected to the inner walls of the two fixing grooves 11, both of the two threaded rods 15 are respectively threadedly penetrated through the two sliding blocks 12, and fixing rings 16 are fixedly connected to both of the two sliding blocks 12;

[0024] The two fixing rings 16 respectively match with the reactor 5 and the capacitor voltage divider 6. Buffer cushions are arranged on the inner walls of the two fixing rings 16 to prevent the side walls of the reactor 5 and the capacitor voltage divider 6 from hitting the inner walls of the fixing rings 16 and being damaged. Worms 17 are fixedly connected to the side walls of both of the two threaded rods 15, a worm 18 is rotatably connected to the inner wall of the rotating groove 14, and the worm 18 matches with the worms 17. A rotating rod is rotatably penetrated through the connecting plate 13. One end of the rotating rod is fixedly connected to the worm 18, and a handle 8 is fixedly connected to the end of the rotating rod far away from the worm 18, which is convenient for the user to rotate the worm 18 and improves the portability of the device;

[0025] The winding component includes a plurality of connecting frames 19, all of the plurality of connecting frames 19 are fixedly connected to the upper end surface of the base 1, winding rollers 20 are fixedly connected to all of the plurality of connecting frames 19. A first connecting wire is connected between the generator 3 and the variable frequency power supply 9, a second connecting wire is connected between the variable frequency power supply 9 and the excitation transformer 4, a third connecting wire 21 is connected between the excitation transformer 4 and the reactor 5, the third connecting wire 21 is installed on the side wall of one of the winding rollers 20, a fourth connecting wire is connected between the reactor 5 and the capacitor voltage divider 6, and a fifth connecting wire is installed on the capacitor voltage divider 6.

[0026] The detailed working process of the present utility model is as follows:

[0027] First, place the base 1 in the designated workplace. The user sequentially places the generator 3, excitation transformer 4, reactor 5, and capacitive voltage divider 6 into the placement groove 2. Then, place the variable frequency power supply 9 into the installation groove on the support frame 7 to prevent each device from moving during the test, improving the safety during the test. After that, the user rotates the grip 8, which drives the worm 18 to rotate. The worm 18 drives the worm gear 17 to rotate, and the threaded rod 15 located on the worm gear 17 starts to rotate, causing the sliding block 12 to slide within the fixed groove 11, making the fixed ring 16 descend. The fixed ring 16 can then sleeve the reactor 5 and the capacitive voltage divider 6, preventing the reactor 5 and the capacitive voltage divider 6 from tipping over due to external forces, improving the stability of the device, avoiding accidents during high-voltage tests, and enhancing the safety during the test. After that, the user sequentially connects the first connecting wire, the second connecting wire, the third connecting wire 21, and the fourth connecting wire. Then, connect the fifth connecting wire to the test cable. The overly long connecting wires can be wound around the wire winding roller 20 to prevent the connecting wires from being entangled with each other, which would make the installation and disassembly process cumbersome for the user, reducing the workload of the staff and also reducing the occurrence of safety accidents.

[0028] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and not to limit them. Although the present invention has been described in detail with reference to the preferred embodiments, those of ordinary skill in the art should understand that the technical solutions of the present invention can be modified or equivalently replaced without departing from the purpose and scope of the technical solutions of the present invention, and they should all be covered by the scope of the claims of the present invention.

Claims

1. A fixed protection device for high-voltage tests of wire and cable, characterized in that, Including: A base (1) is provided with a plurality of placement grooves (2). A generator (3), an excitation transformer (4), a reactor (5), and a capacitive voltage divider (6) are respectively installed in the plurality of placement grooves (2). The upper end surface of the base (1) is fixedly connected with a support frame (7). An installation groove is provided in the support frame (7), and a variable-frequency power supply (9) is installed in the installation groove. A winding assembly is installed on the base (1). A fixing assembly; the fixing assembly includes two vertical plates (10). Both of the two vertical plates (10) are fixedly connected to the upper end surface of the base (1). Fixing grooves (11) are provided in both of the two vertical plates (10). Sliding blocks (12) are slidably arranged in the two fixing grooves (11). A connecting plate (13) is fixedly connected between the two vertical plates (10). A rotating groove (14) is provided in the connecting plate (13). Threaded rods (15) rotatably penetrate through both of the two vertical plates (10). Both of the two threaded rods (15) rotatably penetrate through the connecting plate (13). Both of the two threaded rods (15) are rotatably connected to the inner wall of the rotating groove (14). The two threaded rods (15) are respectively rotatably connected to the inner walls of the two fixing grooves (11). The two threaded rods (15) respectively threadedly penetrate through the two sliding blocks (12). Fixing rings (16) are fixedly connected to both of the two sliding blocks (12). The two fixing rings (16) respectively match the reactor (5) and the capacitive voltage divider (6). Worms (17) are fixedly connected to the side walls of the two threaded rods (15). A worm (18) is rotatably connected to the inner wall of the rotating groove (14). The worm (18) matches the worms (17). A rotating rod rotatably penetrates through the connecting plate (13). One end of the rotating rod is fixedly connected to the worm (18).

2. The fixed protection device for high-voltage test of wire and cable according to claim 1, characterized in that, Among them: The winding assembly includes a plurality of connecting frames (19). The plurality of connecting frames (19) are all fixedly connected to the upper end surface of the base (1). Winding rollers (20) are fixedly connected to the plurality of connecting frames (19). A first connecting wire is connected between the generator (3) and the variable-frequency power supply (9). A second connecting wire is connected between the variable-frequency power supply (9) and the excitation transformer (4). A third connecting wire (21) is connected between the excitation transformer (4) and the reactor (5). The third connecting wire (21) is installed on the side wall of one of the winding rollers (20). A fourth connecting wire is connected between the reactor (5) and the capacitive voltage divider (6). A fifth connecting wire is installed on the capacitive voltage divider (6).

3. A fixed protection device for high-voltage testing of wire and cable according to claim 1, characterized in that, Among them: A plurality of foot pads (22) are fixedly connected to the lower end surface of the base (1).

4. A fixed protection device for high-voltage testing of wire and cable according to claim 1, characterized in that, Among them: A grip (8) is fixedly connected to the end of the rotating rod away from the worm (18).

5. A fixed protection device for high-voltage testing of wire and cable, according to claim 1, characterized in that, Among them: Buffer cushions are provided on the inner walls of the two fixing rings (16).

6. The fixed protection device for high-voltage test of wire and cable according to claim 1, characterized in that, Among them: Anti-slip patterns are provided in the plurality of placement grooves (2).

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