Medium-voltage cable testing mechanism

Abstract

The invention discloses a medium-voltage cable testing mechanism which comprises a testing box, the testing box is of a cube structure, and a vertical partition plate and a transverse partition plate are correspondingly installed in the testing box, so that the internal space of the testing box is divided into a Sudoku structure; the middle area in the test box is arranged as a middle area, the areas at four corners of the test box are separated areas, the middle area at the upper end of the test box is a cold test area, the middle area at the lower end of the test box is a hot test area, and the areas at two sides of the middle of the test box are performance test areas. According to the device, the power-on test of the medium-voltage cable in cold and hot environments can be completed, the power-on test of the medium-voltage cable under the condition of compression can be completed, the power-on test of the medium-voltage cable under the condition of bending and the power-on test of the cable under the condition that compression and bending exist at the same time can also be completed, various test mechanisms are integrated, and the test efficiency is improved. Structural arrangement is ingenious and reasonable, and use is convenient.

Description

Technical Field

[0001] The invention relates to the technical field of production equipment for medium-voltage cables, in particular to a medium-voltage cable testing mechanism. Background Art

[0002] In the prior art, after the medium voltage cable is prepared, it is necessary to perform cable testing. The test contents usually include power-on tests in cold and hot environments, as well as power-on tests under pressure and bending conditions.

[0003] In existing testing institutions, the above-mentioned testing institutions are usually set up separately. For example, in thermal environment testing, the cable needs to be placed in a thermal box, and after the box temperature is adjusted to the required temperature, the power supply of the cable is tested. The cold environment test also has the same setting, and it is necessary to set up a specific environment before testing.

[0004] As well as in the compression and bending test environment, the cable also needs to be subjected to pressure testing and bending testing. These devices usually require a separate testing organization to complete. The setting of each device will increase the cost of the overall testing organization. These testing organizations cannot be integrated in the existing technology.

[0005] Therefore, in order to solve the above problems, it is necessary to develop a medium voltage cable testing mechanism with a reasonable structure that can integrate multiple testing mechanisms. Summary of the invention

[0006] The purpose of the present invention is to provide a medium voltage cable testing mechanism in view of the deficiencies in the prior art; the technical solution is as follows:

[0007] A medium voltage cable testing mechanism comprises a test box, which is a cube structure, and two vertical and horizontal partitions are installed in the test box, so that the space inside the test box is divided into a nine-square grid structure; the middle area in the test box is set as the middle area, the areas at the four corners of the test box are separated areas, the middle area at the upper end of the test box is a cold test area, the middle area at the lower end of the test box is a hot test area, and the areas on both sides of the middle of the test box are performance test areas;

[0008] The partitions on the four sides of the middle area are provided with openings, which are connected to the four surrounding areas through the openings in four directions, and the separation areas are respectively installed with transverse movement mechanisms, and the main shafts of the transverse movement mechanisms are respectively installed with gates, and the main shafts of each transverse movement mechanism extend into the adjacent test area on the right side, and the gates on the main shafts block the openings accordingly;

[0009] A refrigeration device is installed in the cold test area, and the cold test area is cooled by the refrigeration device; a heating device is installed in the hot test area, and the hot test area is heated by the heating device; a medium-voltage cable to be tested is arranged in the middle area, and a temperature measuring element is also installed in the middle area.

[0010] Furthermore, pressure mechanisms are correspondingly installed in the performance test areas on both sides of the test box, the positions of the pressure mechanisms on both sides correspond to the positions of the openings on both sides of the middle area, and pressure plates are correspondingly installed on the main axes of the pressure mechanisms on both sides. The pressure plates on both sides can enter into the middle area from the openings to apply pressure to the medium voltage cables in the middle area from both sides.

[0011] Furthermore, the main shafts of the pressure mechanisms on both sides are provided with mounting seats, the mounting seats are provided with rotating motors, and the pressure plates are correspondingly mounted on the main shafts of the rotating motors;

[0012] The upper and lower ends of the pressure plate are both provided with spring grooves, in which spring members are correspondingly installed, and in which top blocks are correspondingly installed, and the spring members are correspondingly fixed on the top blocks; the top blocks at the upper and lower ends of the pressure plates on both sides correspond to each other, and when the pressure plates on both sides squeeze the medium-voltage cable in the middle area, the top blocks on both sides press against each other and retract into the spring grooves under the action of pressure, thereby achieving compression of the medium-voltage cable;

[0013] After the rotating motor is started, the pressing plates on both sides are driven to rotate simultaneously, and under the blocking restriction of the upper and lower top blocks, the middle medium-voltage cable is rotated and bent accordingly.

[0014] Furthermore, the ends of the top blocks are also provided with sawtooth-shaped card slots and card blocks at corresponding positions, and when the top blocks on both sides are pressed together, the card slots and card blocks are fitted together.

[0015] Furthermore, openable door panels are correspondingly installed on both sides of the middle area in the middle of the test box through hinge components; the door panels are provided with inner holes for the corresponding passage of the medium-voltage cable; the medium-voltage cable passes between the door panels on both sides and is hung in the middle position of the middle area.

[0016] Furthermore, flow stirring devices are installed on the door panels on both sides, and the flow stirring devices on both sides can stir the space in the middle area to make the temperature in the middle area uniform.

[0017] Furthermore, there are four temperature measuring elements in the middle area, and the installation positions of the temperature measuring elements do not conflict with the opening positions.

[0018] Furthermore, line feed roller groups are correspondingly installed on the outside of both ends of the middle area, and the medium voltage cable to be tested is clamped by the line feed roller groups on both sides and enters the middle area.

[0019] Furthermore, the side walls of the cold test area 5 and the hot test area 6 are respectively provided with interlayers.

[0020] Beneficial effects: The present invention has the following beneficial effects: The device can complete the power-on test of the medium-voltage cable in cold and hot environments, and can complete the power-on test of the medium-voltage cable in a compressed state. It can also complete the power-on test of the medium-voltage cable in a bent state and the power-on test of the cable in the case of compression and bending at the same time. It integrates multiple testing mechanisms together, has an ingenious and reasonable structural setting, and is easy to use. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a structural diagram of the present invention;

[0022] Figure 2 It is the position diagram of the gate in the present invention;

[0023] Figure 3 for Figure 2 Middle AA section view;

[0024] Figure 4 It is the installation position diagram of the top block in the present invention;

[0025] Among them, there are test box 1; partition 2; middle area 3; separation area 4; cold test area 5; hot test area 6; performance test area 7; opening 8; transverse movement mechanism 9; gate 10; refrigeration equipment 11; heating equipment 12; medium voltage cable 13; temperature measuring element 14; pressure mechanism 15; pressure plate 16; mounting seat 17; rotating motor 18; spring slot 19; spring member 20; top block 21; card slot 22; card block 23; door panel 24; inner hole 25; flow stirring device 26; inlet roller group 27. DETAILED DESCRIPTION

[0026] The present invention is further explained below in conjunction with the accompanying drawings and specific embodiments. The embodiments are implemented based on the technical solution of the present invention. It should be understood that these embodiments are only used to illustrate the present invention and are not used to limit the scope of the present invention.

[0027] like Figures 1 to 4As shown, a medium voltage cable testing mechanism includes a test box 1, which is a cube structure, and two vertical and horizontal partitions 2 are installed in the test box 1, so that the space inside the test box 1 is divided into a nine-square grid structure; the middle area in the test box 1 is set as the middle area 3, the areas at the four corners of the test box 1 are separated areas 4, the middle area of ​​the upper end of the test box 1 is a cold test area 5, the middle area of ​​the lower end of the test box 1 is a hot test area 6, and the areas on both sides of the middle of the test box 1 are performance test areas 7;

[0028] The partitions 2 on the four sides of the middle area 3 are provided with openings 8, which are connected to the four surrounding areas through the openings 8 in four directions, and the partition areas 4 are respectively installed with transverse movement mechanisms 9, and the main shafts of the transverse movement mechanisms 9 are respectively installed with gates 10, and the main shafts of each transverse movement mechanism 9 are respectively extended into the adjacent test area on the right, and the gates 10 on the main shafts block the openings 8;

[0029] A refrigeration device 11 is installed in the cold test area 5, and the cold test area 5 is cooled by the refrigeration device 11; a heating device 12 is installed in the hot test area 6, and the hot test area 6 is heated by the heating device 12; a medium-voltage cable 13 to be tested is arranged in the middle area 3, and a temperature measuring element 14 is also installed in the middle area 3.

[0030] Pressure mechanisms 15 are installed in the performance test areas 7 on both sides of the test box 1. The positions of the pressure mechanisms 15 on both sides correspond to the positions of the openings 8 on both sides of the middle area 3. Pressure plates 16 are installed on the main axes of the pressure mechanisms 15 on both sides. The pressure plates 16 on both sides can enter the middle area 3 from the openings 8 to apply pressure to the medium voltage cable 13 in the middle area 3 from both sides.

[0031] The main shafts of the pressure mechanisms 15 on both sides are provided with mounting seats 17, the mounting seats 17 are provided with rotating motors 18, and the pressure plates 16 are correspondingly mounted on the main shafts of the rotating motors 18;

[0032] The upper and lower ends of the pressing plate 16 are provided with spring grooves 19, and a spring member 20 is installed in the spring groove 19, and a top block 21 is installed in the spring groove 19, and the spring member 20 is fixed on the top block 21; the top blocks 21 at the upper and lower ends of the pressing plates 16 on both sides correspond to each other, and when the pressing plates 16 on both sides squeeze the medium voltage cable 13 in the middle area 3, the top blocks 21 on both sides press against each other and retract into the spring groove 19 under the pressure, so as to achieve the compression of the medium voltage cable 13;

[0033] After the rotating motor 18 is started, the pressing plates 16 on both sides are driven to rotate simultaneously, and under the blocking restriction of the upper and lower top blocks 21, the middle medium voltage cable 13 is rotated and bent accordingly.

[0034] The end of the top block 21 is also provided with a sawtooth-shaped clamping groove 22 and a clamping block 23 at corresponding positions. When the top blocks 21 on both sides are pressed together, the clamping groove 22 and the clamping block 23 are matched and clamped.

[0035] Openable door panels 24 are correspondingly installed on both sides of the middle area 3 in the middle of the test box 1 through hinge components; the door panels 24 are provided with inner holes 25 for the medium voltage cable 13 to pass through; the medium voltage cable 13 passes between the door panels 24 on both sides and is suspended in the middle position of the middle area 3.

[0036] Flow stirring devices 26 are also installed on the door panels 24 on both sides. The flow stirring devices 26 on both sides can stir the space in the middle area 3 to make the temperature in the middle area 3 uniform.

[0037] There are four temperature measuring elements 14 in the middle area 3 , and the installation positions of the temperature measuring elements 14 do not conflict with the positions of the openings 8 .

[0038] Inlet roller groups 27 are also installed on the outside of both ends of the middle area 3. The medium-voltage cable to be tested is clamped by the inlet roller groups 27 on both sides and enters the middle area 3; partitions are correspondingly arranged on the side walls of the cold test area 5 and the hot test area 6.

[0039] The specific working principle of this device is as follows: In this device, the medium-voltage cable to be tested must first be placed in the middle area. Openable door panels are provided on both sides of the middle area. The door panels are provided with inner holes that can be passed through. The medium-voltage cable can be passed through the inner hole on the door panel to hang the medium-voltage cable in the middle area. Then, the two ends of the medium-voltage cable are placed on the line-in roller groups on both sides for testing.

[0040] When conducting cold and hot environment tests, for example, the gate plate can be controlled by the transverse movement mechanism in the separation area to open the opening in the thermal test area, so that the thermal test area below is connected to the middle area above, and then the heating equipment in the thermal test area is turned on to heat the thermal test area. The principle of rising hot air flow is used to make the hot air flow rise to the middle area, and the openings in other positions are blocked by the gate plate. The temperature in the middle area is gradually increased by the heating of the heating equipment in the thermal test area, and a number of temperature measuring elements at different positions are correspondingly arranged in the middle area. The temperature in the middle area is monitored by the temperature measuring elements. When the temperature rises to the required test temperature, the medium voltage cable can be connected to the power supply for testing.

[0041] When the cold area test is performed accordingly, the same operation is performed, and the gate in the cold test area is opened accordingly to connect the cold test area with the middle area, and then the refrigeration equipment in the cold test area is turned on to reduce the temperature of the cold test area and the middle area to the required test temperature, after which the cold area test can be performed.

[0042] The test box of this device is set as a nine-square grid structure. On the one hand, it is convenient to set up various test areas. Another important point is that separation areas are set at the four corners. The setting of the separation area, on the one hand, provides sufficient installation space for the transverse movement mechanism; on the other hand, it effectively isolates the temperature transfer between the hot test area and the cold test area; if the hot and cold test areas are connected to the performance test areas, it is very likely that the temperature will be transferred to the performance test area, causing unnecessary trouble; after setting up the isolation area, the heat will not be easily transferred to the performance test area, and the safety of the overall structure is increased by the isolation area; in addition, partitions are set in the hot and cold test areas of this device, which can also effectively prevent heat loss, and the structure is reasonable.

[0043] In the hot and cold tests, the door panels on both sides of the middle area are equipped with flow stirring devices. The flow stirring devices can evenly diffuse the temperature in the middle area and the connected test area, making the internal temperature uniform. With the cooperation of several temperature measuring elements, the temperature value in the middle area can be accurately measured, thereby increasing the accuracy of the test.

[0044] The technical solution of the present invention can not only carry out hot and cold tests, but also carry out power-on tests under compression and bending resistance conditions; pressure mechanisms are correspondingly installed in the performance test areas on both sides of the test box, and during the test, the gates in the performance test areas on both sides can be opened by the transverse structure; the pressure plates on the main shafts of the pressure mechanisms on both sides can be extended into the middle area to squeeze the suspended medium-voltage cable, and at this time, the power supply of the medium-voltage cable can be turned on to carry out a power-on test to test the power-on condition when the cable is compressed.

[0045] Furthermore, the present invention can also realize the power-on condition of the medium voltage cable when it is bent; further, the device is provided with a mounting seat on the main shaft of the pressure mechanism, a rotating motor is provided on the mounting seat, the pressure plate is provided on the rotating motor, and top blocks are correspondingly provided above and below the pressure plate through spring grooves and spring parts.

[0046] After such design, when the pressure plates on both sides are tightened accordingly, first of all, if the cable is to be tightened, the pressure plates on both sides can be tightened accordingly, and at the same time, the top blocks at the upper and lower ends press against each other and are then pressed into their respective spring grooves, which will not affect the cable compression at all.

[0047] If you choose to bend the cable while compressing it, you can directly turn on the rotating motor to drive the pressure plate to rotate. Since the upper and lower sides are blocked by the top blocks, when the rotating motor drives the pressure plate to rotate, the compressed cable inside will also be rotated and bent accordingly. At this time, turn on the power supply for testing, and you can perform power-on testing when the cable is compressed and bent.

[0048] If you choose to only bend the cable, then when controlling the pressure plates on both sides to press inward, only the top blocks at the upper and lower ends will be pressed against each other, and the pressure plates will not press the cables. At this time, the pressure plates can be driven to rotate by the rotating motor, so that the cable can be rotated and bent without pressing the cables. At this time, turn on the power supply for testing. The cable is only bent but not pressed. You can choose to test under different conditions.

[0049] The above specific implementation is only a preferred embodiment of the present invention and is not intended to limit the implementation of the present invention and the scope of the claims. All equivalent changes and modifications made according to the content of the patent protection scope of the present invention should be included in the scope of the patent application of the present invention.

Claims

1. A medium voltage cable testing mechanism, characterized in that: The test box (1) comprises a test box (1), which is a cubic structure, and two vertical and horizontal partitions (2) are installed in the test box (1) to divide the space inside the test box (1) into a nine-square grid structure; the middle area in the test box (1) is set as the middle area (3), the areas at the four corners of the test box (1) are separated areas (4), the middle area at the upper end of the test box (1) is a cold test area (5), the middle area at the lower end of the test box (1) is a hot test area (6), and the areas on both sides of the middle of the test box (1) are performance test areas (7); The partitions (2) on the four sides of the middle area (3) are provided with openings (8), and are connected to the four surrounding areas through the openings (8) in four directions. The partition areas (4) are respectively provided with transverse movement mechanisms (9), and the main shafts of the transverse movement mechanisms (9) are respectively provided with gate plates (10). The main shafts of each transverse movement mechanism (9) are respectively extended into the adjacent test area on the right side, and the gate plates (10) on the main shafts are respectively used to block the openings (8); A refrigeration device (11) is installed in the cold test area (5) to cool the cold test area (5); a heating device (12) is installed in the hot test area (6) to heat the hot test area (6); a medium-voltage cable (13) to be tested is arranged in the middle area (3), and a temperature measuring element (14) is also installed in the middle area (3).

2. A medium voltage cable testing mechanism according to claim 1, characterized in that: Pressure mechanisms (15) are correspondingly installed in the performance test areas (7) on both sides of the test box (1), and the positions of the pressure mechanisms (15) on both sides correspond to the positions of the openings (8) on both sides of the middle area (3). Pressure plates (16) are correspondingly installed on the main axes of the pressure mechanisms (15) on both sides, and the pressure plates (16) on both sides can enter the middle area (3) from the openings (8) to apply pressure to the medium voltage cable (13) in the middle area (3) from both sides.

3. A medium voltage cable testing mechanism according to claim 2, characterized in that: A mounting seat (17) is also provided on the main shaft of the pressure mechanism (15) on both sides, a rotating motor (18) is also provided on the mounting seat (17), and the pressure plate (16) is correspondingly mounted on the main shaft of the rotating motor (18); The upper and lower ends of the pressure plate (16) are both provided with spring grooves (19), and a spring member (20) is correspondingly installed in the spring groove (19), and a top block (21) is correspondingly installed in the spring groove (19), and the spring member (20) is correspondingly fixed on the top block (21); the top blocks (21) at the upper and lower ends of the pressure plates (16) on both sides correspond to each other, and when the pressure plates (16) on both sides squeeze the medium voltage cable (13) in the middle area (3), the top blocks (21) on both sides press against each other and retract into the spring groove (19) under the action of pressure, thereby achieving compression of the medium voltage cable (13); After the rotating motor (18) is started, the pressing plates (16) on both sides are driven to rotate simultaneously, and under the blocking restriction of the upper and lower top blocks (21), the middle medium voltage cable (13) is rotated and bent accordingly.

4. A medium voltage cable testing mechanism according to claim 3, characterized in that: The end of the top block (21) is also provided with a sawtooth-shaped clamping groove (22) and a clamping block (23) at corresponding positions. When the top blocks (21) on both sides are pressed together, the clamping groove (22) and the clamping block (23) are fitted together.

5. A medium voltage cable testing mechanism according to claim 1, characterized in that: Door panels (24) that can be opened are correspondingly installed on both sides of the middle area (3) in the middle of the test box (1) through hinge components; the door panels (24) are provided with inner holes (25) for the medium-voltage cable (13) to pass through; the medium-voltage cable (13) passes between the door panels (24) on both sides and is hung at the middle position of the middle area (3).

6. A medium voltage cable testing mechanism according to claim 5, characterized in that: Flow stirring devices (26) are also installed on the door panels (24) on both sides. The flow stirring devices (26) on both sides can stir the space in the middle area (3) to make the temperature in the middle area (3) uniform.

7. A medium voltage cable testing mechanism according to claim 5, characterized in that: A total of four temperature measuring elements (14) are provided in the middle area (3), and the installation positions of the temperature measuring elements (14) do not conflict with the positions of the openings (8).

8. A medium voltage cable testing mechanism according to claim 5, characterized in that: Inlet roller groups (27) are correspondingly installed on the outside of both ends of the middle area (3), and the medium-voltage cable to be tested is clamped by the inlet roller groups (27) on both sides and enters the middle area (3).

9. A medium voltage cable testing mechanism according to claim 5, characterized in that: The side walls of the cold test area (5) and the hot test area (6) are respectively provided with interlayers.

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