A high-voltage rubber cable reciprocating torsion test device and test method

Abstract

This invention discloses a reciprocating torsion testing device and method for high-voltage rubber-sheathed cables, relating to the field of cable testing technology. The device includes a main body and a swinging device mounted on the main body. The main body has a test space, within which a first connection portion is provided for connecting to one end of the cable under test. At least a portion of the swinging device extends into the test space and has a second connection portion for connecting to the other end of the cable under test. The second connection portion and the first connection portion are located on the same side of the axis of the swinging device, with the first connection portion closer to the axis and lower than the second connection portion. The swinging device is configured to drive one side of the cable under test to reciprocate at a preset angle in a horizontal plane to detect the surface quality and / or continuity of the cable. This testing device simulates the actual use of cables in wind turbine generators, resulting in more realistic test data.

Description

Technical Field

[0001] This invention belongs to the field of cable testing technology, specifically a test device and test method for reciprocating torsion testing of high-voltage rubber-sheathed cables. Background Technology

[0002] Cables transmit electrical energy or signals and are typically composed of several or groups of conductors, with an outer layer of insulation and rubber. Cables have a wide range of applications; for example, in wind turbines, the electricity generated by the generator needs to be transmitted to the power grid via cables.

[0003] During wind turbine generation, the nacelle needs to be yawed according to wind direction to ensure the blades are aligned with the wind and maximize wind energy utilization. To accommodate yaw adjustment requirements, a section of high-voltage rubber-sheathed cable from the nacelle to the tower must be freely suspended, twisting with the nacelle's yaw. Therefore, this section of cable is in a state of torsion for extended periods. To evaluate the cable's torsional resistance and ensure stable operation of the wind turbine, a torsion test is necessary.

[0004] In existing technologies, a section of cable is typically straightened, and both ends are fixed to a torsion device. One end is then twisted, and after multiple twists, the cable surface is inspected for cracks, and its continuity is tested by applying current. However, this testing method differs significantly from actual application scenarios, thus affecting the accuracy of the torsion test results. This problem urgently needs to be solved. Summary of the Invention

[0005] The purpose of this invention is to provide a test device and method for reciprocating torsion testing of high-voltage rubber-sheathed cables. By simulating the actual use scenario of cables in wind turbines, the test data can be made more realistic and reliable.

[0006] To achieve the above objectives, the present invention provides the following technical solution: In a first aspect, the present invention provides a high-voltage rubber-sheathed cable reciprocating torsion test device, including a device body and a swinging device disposed on the device body. The device body has a test space and a first connecting part for connecting to one end of the cable to be tested. At least part of the swing device extends into the test space and has a second connection for connecting to the other end of the cable under test. The second connection and the first connection are located on the same side of the axis of the swing device. The first connection is close to the axis of the swing device and lower than the second connection. The swing device is configured to drive one side of the cable under test to swing back and forth in the horizontal plane at a preset angle in order to detect the surface quality and / or continuity of the cable under test.

[0007] As a further embodiment of the present invention, it also includes: A supporting device is provided on the swinging device and located between the first connecting part and the second connecting part; A supporting arc surface is formed above the supporting device to support part of the cable to be tested between the first connecting part and the second connecting part.

[0008] As a further embodiment of the present invention, the supporting device includes a supporting seat and a plurality of supporting rollers, wherein the supporting seat is disposed on the swinging device. Each support roller is arranged at intervals on the support seat in a direction away from the axis of the swing device to form a support arc surface; each support roller is moved in the vertical direction to adjust its height.

[0009] As a further embodiment of the present invention, the support includes a base plate and two side plates, the two side plates being connected to each other on the base plate; Each support roller is located between two side plates, and its two ends are connected to the corresponding side plates.

[0010] As a further embodiment of the present invention, the supporting device also includes a first adjustment mechanism, which is connected to the base plate for driving the base plate to move along the axis away from or close to the swing device.

[0011] As a further embodiment of the present invention, the swinging device includes a cantilever, a longitudinal arm, a second adjustment mechanism and a drive mechanism, with one end of the cantilever rotatably connected to the device body and the other end extending into the test space. The longitudinal arm is located in the test space and connected to the cantilever, and the second connecting part is located on the longitudinal arm; the second adjustment mechanism is connected to the longitudinal arm drive to drive the longitudinal arm to move in a direction away from or close to the axis of the swing device; the drive mechanism is connected to the cantilever drive to drive the cantilever to reciprocate and swing a preset angle in the horizontal plane.

[0012] As a further embodiment of the present invention, it also includes: The counterweight mechanism is located within the test space and is vertically movable, with the first connecting part located on the counterweight mechanism.

[0013] As a further embodiment of the present invention, the first connecting part and / or the second connecting part are connected to the end of the cable to be tested via a clamping mechanism; The clamping mechanism includes a connecting plate and two clamping plates. The connecting plate is fixedly connected to the first connecting part or the second connecting part. One end of the two clamping plates is clamped and connected to the connecting plate, and the other end is used to clamp and connect to the end of the cable to be tested.

[0014] As a further embodiment of the present invention, it also includes: Temperature and humidity controllers installed in the test space.

[0015] In a second aspect, the present invention provides a test method for any of the high-voltage rubber-sheathed cable reciprocating torsion test equipment provided in the first aspect, comprising: Connect one end of the cable to be tested to the first connection part and the other end to the second connection part; Set the temperature and humidity in the test space to the preset temperature and humidity. The swinging device drives one side of the cable under test to swing back and forth in the horizontal plane at a preset angle, and stops swinging after reaching a preset number of times. Test the surface quality of the cable under test, and / or connect both ends of the cable under test to a test circuit to test its continuity.

[0016] The present invention provides a high-voltage rubber-sheathed cable reciprocating torsion test device and test method, which has at least the following technical effects: the high-voltage rubber-sheathed cable reciprocating torsion test device includes a device body and a swing device. A test space is provided in the device body for controlling the test temperature, humidity, etc. The test space has a first connection part connected to one end of the cable under test. The swing device is set on the device body, at least part of the swing device extends into the test space, and has a second connection part connected to the other end of the cable under test. The second connection part and the first connection part are located on the same side of the axis of the swing device. The first connection part is close to the axis of the swing device and lower than the second connection part. The swing device is configured to drive one side of the cable under test to reciprocate and swing at a preset angle in the horizontal plane. After twisting several times, the surface quality and / or continuity of the cable under test can be detected.

[0017] Therefore, the high-voltage rubber-sheathed cable reciprocating torsion test equipment provided by the present invention can test the quality and performance of the cable by simulating the actual installation arrangement of the cable between the generator and the tower and the actual swinging and torsion state of the cable in the cabin. This makes the test data more realistic and reliable, and the operation is simple and convenient. Attached Figure Description

[0018] To facilitate understanding by those skilled in the art, the present invention will be further described below with reference to the accompanying drawings.

[0019] Figure 1 This is a partial schematic diagram of the internal cable layout of an existing wind turbine. Figure 2 This is a schematic diagram of the structure of the high-voltage rubber-sheathed cable reciprocating torsion testing equipment provided in an embodiment of the present invention; Figure 3 for Figure 2 A sectional view along section AA; Figure 4 for Figure 3 A partial structural diagram along direction B in the middle; Figure 5 for Figure 4 A schematic diagram of the swing angle of the cantilever. Figure 6 for Figure 2 A schematic diagram of the clamping mechanism; Figure 7 for Figure 6 Partial exploded view; Figure 8 A flowchart of a high-voltage rubber-sheathed cable reciprocating torsion test method provided in an embodiment of the present invention.

[0020] Figure label: 10. Cable under test; 11. Actual cable; 20. Generator; 30. Tower; 100. Equipment body; 101. First connecting part; 200, Swinging device; 201, Second connecting part; 210, Cantilever; 220, Longitudinal arm; 230, Second adjusting mechanism; 240, Drive mechanism; 300, Supporting device; 301, Supporting arc surface; 302, Limiting roller; 310, Support seat; 311, Base plate; 312, Side plate; 320, Supporting roller; 330, First adjustment mechanism; 400. Counterweight mechanism; 500. Clamping mechanism; 510. Connecting plate; 520. Clamping plate; 530. Conductive block; 600. Temperature and humidity controller. Detailed Implementation

[0021] Embodiments of the present invention are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and should not be construed as limiting the present invention.

[0022] In the description of this invention, it should be understood that the orientation descriptions, such as up, down, front, back, left, right, etc., are based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limiting this invention.

[0023] In the description of this invention, "several" means one or more, "more than" means two or more, "greater than," "less than," and "exceeding" are understood to exclude the stated number, while "above," "below," and "within" are understood to include the stated number. The use of "first" and "second" in the description is merely for distinguishing technical features and should not be construed as indicating or implying relative importance, or implicitly indicating the number of indicated technical features, or implicitly indicating the order of the indicated technical features.

[0024] In the description of this invention, unless otherwise explicitly defined, terms such as "set up," "install," and "connect" should be interpreted broadly, and those skilled in the art can reasonably determine the specific meaning of the above terms in this invention in conjunction with the specific content of the technical solution.

[0025] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only for explaining the invention and are not intended to limit the invention; that is, the described embodiments are merely some embodiments of the invention, and not all embodiments. The components of the embodiments of the invention described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0026] Therefore, the following detailed description of the embodiments of the invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the invention without inventive effort are within the scope of protection of the invention.

[0027] In existing technologies, a section of cable is typically straightened, with both ends fixed to a torsion device. One end is then twisted repeatedly. After multiple twists, the cable surface is inspected for cracks, and its continuity is tested by applying current. However, this testing method differs significantly from actual application scenarios, such as… Figure 1 As shown, the section of the actual cable 11 from the top of the tower 30 to the generator 20 inside the nacelle needs to be freely suspended and twisted by the yaw of the nacelle. This section of the actual cable 11 is not in a straight, taut state during use, but rather in a bent state with a certain curvature. Therefore, the torsional performance under actual use cannot be reflected by directly straightening the cable and passing it through a torsion test, thus affecting the accuracy of the torsion test results. This problem urgently needs to be solved.

[0028] Firstly, please refer to Figures 2 to 7As shown, this embodiment of the invention provides a high-voltage rubber-sheathed cable reciprocating torsion test device, including a device body 100 and a swing device 200 disposed on the device body 100. The device body 100 has a test space, and the test space has a first connection part 101 for connecting to one end of the cable 10 to be tested.

[0029] At least a portion of the swing device 200 extends into the test space and has a second connection portion 201 for connecting to the other end of the cable 10 under test. The second connection portion 201 and the first connection portion 101 are located on the same side of the axis of the swing device 200. The first connection portion 101 is close to the axis of the swing device 200 and is lower than the second connection portion 201.

[0030] The swing device 200 is configured to drive one side of the cable 10 under test to swing back and forth in the horizontal plane at a preset angle in order to detect the surface quality and / or continuity of the cable 10 under test.

[0031] In this embodiment, the cable under test 10 is used for power transmission of wind turbine units. It can be composed of multi-core or single-core wires, and the test length is approximately equal to the length from the top of the tower 30 to the generator 20 inside the nacelle.

[0032] In this embodiment, the device body 100 can be a box, frame, shell, or other structure that provides support. It contains a test space to accommodate the cable 10 under test. This test space can be a sealed space to facilitate control of parameters such as temperature and humidity. The device body 100 can also be equipped with a cabinet door for opening and closing the test space. A first connecting part 101 is provided on the side wall of the device body 100 below the test space. This first connecting part 101 is used to fix the cable 10 under test to its lower end, restricting the circumferential rotation of the cable 10. In other words, the first connecting part 101 corresponds to the fixed position of the cable 10 under test within the tower 30.

[0033] In this embodiment, the swing device 200 can be installed on the equipment body 100 or on the foundation. Its rotation center is located outside the equipment body 100 and is arranged vertically. The equipment body 100 has a window, and part of the swing device 200 extends laterally from the window into the test space. The side of the swing device 200 away from the rotation center has a second connecting part 201, which is used to fix it to the upper end of the cable under test 10, restricting the circumferential rotation of the cable under test 10. That is, the second connecting part 201 is equivalent to the fixed position of the cable under test 10 on the generator 20.

[0034] The second connecting part 201 and the first connecting part 101 are located on the same side of the axis of the swing device 200. The first connecting part 101 is close to the axis of the swing device 200 and lower than the second connecting part 201. That is, the lateral distance between the first connecting part 101 and the second connecting part 201 is equivalent to the lateral distance between the inner wall of the tower 30 and the connection point of the generator 20.

[0035] Specifically, the lower end of the cable 10 to be tested is connected to the first connecting part 101, and the upper end is connected to the second connecting part 201. The temperature and humidity in the test space are set to a preset temperature and a preset humidity. The swing device 200 drives one side of the cable 10 to swing back and forth in the horizontal plane at a preset angle θ. Figure 5 As shown, the swing device 200 swings back and forth between positions P1 and P2, and θ can be 20°~40°. After reaching a preset number of swings, it stops swinging to detect the surface quality of the cable 10 under test, or to connect both ends of the cable 10 under test to the test circuit to detect continuity.

[0036] Among them, surface quality mainly refers to whether there are cracks or other phenomena on the surface of the test cable 10. By connecting both ends of the test cable 10 to the test circuit, it is possible to determine whether there are internal breaks or other conditions.

[0037] Therefore, compared with the existing operation of simply straightening the cable and then conducting a torsion test, the application of the high-voltage rubber-sheathed cable reciprocating torsion test equipment provided in this embodiment of the invention can test the quality and performance of the cable by simulating the actual installation arrangement of the cable between the generator 20 and the tower 30 and the actual swinging and torsion state of the cable in the cabin. This makes the test data more realistic and reliable, and the operation is simple and convenient.

[0038] It should be noted that the preset temperature, preset humidity, preset angle, preset number of times, etc., can be determined according to actual needs, and are not specifically limited in this embodiment. In addition, the first connecting part 101 and the second connecting part 201 correspond one-to-one, and multiple of them can be provided.

[0039] In some embodiments, the high-voltage rubber-sheathed cable reciprocating torsion testing equipment provided in this invention further includes: The supporting device 300 is disposed on the swing device 200 and located between the first connecting part 101 and the second connecting part 201.

[0040] A supporting arc surface 301 is formed above the supporting device 300 to support part of the cable 10 to be tested between the first connecting part 101 and the second connecting part 201.

[0041] Specifically, such as Figure 2 , Figure 3As shown, the supporting device 300 is used to support a section of the cable 10 to be tested between the first connecting part 101 and the second connecting part 201. It is disposed between the first connecting part 101 and the second connecting part 201 and connected to the swing device 200. The supporting device 300 has a supporting arc surface 301, on which the cable 10 to be tested between the first connecting part 101 and the second connecting part 201 can be placed. In this way, during the operation of the swing device 200, at least the middle section of the cable 10 to be tested can be effectively prevented from swaying vertically, which is more in line with actual operating conditions.

[0042] Furthermore, in this embodiment, the supporting device 300 includes a supporting seat 310 and a plurality of supporting rollers 320, with the supporting seat 310 disposed on the swing device 200.

[0043] Each support roller 320 is arranged at intervals on the support base 310 in a direction opposite to the axis of the swing device 200 to form a support arc surface 301. Each support roller 320 is movable in the vertical direction to adjust its height.

[0044] Specifically, such as Figure 2 , Figure 3 As shown, the support 310 has a cavity with an open top, which can be mounted on the swing device 200. The axis of the support roller 320 is arranged laterally and perpendicular to the axis of the swing device 200. The support rollers 320 are spaced apart in a direction away from the axis of the swing device 200, as shown. Figure 3 As shown in the first direction, each support roller 320 is connected to the support seat 310 at both ends, so that the upper surface of each support roller 320 sequentially forms an intermittent support arc surface 301. Moreover, the outer layer of each support roller 320 is covered with a rubber layer to reduce wear.

[0045] This allows the height of the supporting arc surface 301 to be adjusted according to the cable installation configuration in different wind turbine units, further adapting to actual usage scenarios and making the test results more accurate. The specific number of supporting rollers 320 can be determined according to actual needs; this embodiment does not impose excessive restrictions. Additionally, as... Figure 3 As shown, a limiting roller 302 can also be provided on the swing device 200 near the second connecting part 201 to restrict the cable 10 to be tested from moving in the direction of the axis of the swing device 200, thereby preventing the cable 10 to be tested from jumping left and right near the second connecting part 201. Moreover, the limiting roller 302 can also be moved vertically to adjust its height position.

[0046] Furthermore, in this embodiment, the support 310 includes a base plate 311 and two side plates 312, with the two side plates 312 connected to the base plate 311.

[0047] Each support roller 320 is located between two side plates 312, and its two ends are connected to the corresponding side plates 312.

[0048] Specifically, such as Figure 2 , Figure 3 As shown, two side plates 312 are arranged laterally at intervals, and the bottom of both are fixed to the base plate 311. Each support roller 320 is arranged between the two side plates 312 and its end is connected to the corresponding side plate 312.

[0049] For example, the support 310 has first mounting grooves extending vertically, each corresponding to a support roller 320. Both ends of each support roller 320 can be connected to the first mounting groove via bolt assemblies. When the bolt assemblies are loosened, each support roller 320 can slide vertically within the first mounting groove to adjust its height. After adjustment, the bolt assemblies can be tightened. This facilitates single-piece processing and subsequent assembly.

[0050] Furthermore, in this embodiment, the supporting device 300 also includes a first adjustment mechanism 330, which is connected to the base plate 311 for driving the base plate 311 to move along the axis away from or near the swing device 200.

[0051] For example, such as Figure 3 As shown, the bottom of the base plate 311 can be connected to the swing device 200 via slide rails, guide rails, etc., and can slide along the direction away from or near the axis of the swing device 200. The first adjustment mechanism 330 includes a first screw and a first threaded sleeve. The first screw is arranged along the direction away from or near the axis of the swing device 200, such as... Figure 3 As shown in the first direction, one end of the first screw is rotatably connected to the push block at the bottom of the base plate 311, and the first threaded sleeve, which is threadedly engaged with the first screw, is fixed to the bottom of the swing device 200 near the second connecting part 201.

[0052] In this way, when the first screw is rotated, it can push the push block and the base plate 311 to move along the axis away from or towards the swing device 200, thereby adjusting the lateral position of the support seat 310 and each support roller 320, and thus adjusting the support position of the cable 10 to be tested. Additionally, a handwheel can be installed on the side of the first screw facing the cabinet door. Of course, the first adjustment mechanism 330 can also be replaced by other types of mechanisms, depending on actual needs; this embodiment does not impose excessive restrictions.

[0053] Furthermore, in this embodiment, the swing device 200 includes a cantilever 210, a longitudinal arm 220, a second adjustment mechanism 230, and a drive mechanism 240. One end of the cantilever 210 is rotatably connected to the device body 100, and the other end extends into the test space.

[0054] The longitudinal arm 220 is located within the test space and connected to the cantilever 210, with the second connecting portion 201 located on the longitudinal arm 220. The second adjustment mechanism 230 is drive-connected to the longitudinal arm 220 to drive the longitudinal arm 220 to move along the axis away from or towards the swing device 200. The drive mechanism 240 is drive-connected to the cantilever 210 to drive the cantilever 210 to reciprocate and swing a preset angle in the horizontal plane.

[0055] Specifically, such as Figure 2 , Figure 3 , Figure 4 As shown, one end of the cantilever 210 is rotatably connected to the support of the equipment body 100, with the rotation axis arranged vertically. The other end of the cantilever 210 extends from a window on the side wall of the equipment body 100 into the test space, and the window can be sealed by a telescopic sleeve. The upper end of the longitudinal arm 220 can be connected to the cantilever 210 by a slide rail, guide rail, etc., and can slide along the axis away from or close to the swing device 200. The second connecting part 201 is located on the longitudinal arm 220.

[0056] The second adjustment mechanism 230 includes a second screw and a second threaded sleeve. The second screw is arranged along a direction away from or close to the axis of the swing device 200, such as... Figure 3 As shown in the first direction, one end of the second screw is rotatably connected to the upper end of the longitudinal arm 220, and the second threaded sleeve, which is threadedly engaged with the second screw, is fixed to the end of the cantilever 210 that is away from the axis of the swing device 200.

[0057] In this way, when the second screw is rotated, the longitudinal arm 220 can be moved along the axis away from or towards the swing device 200, thereby adjusting the lateral position of the support 310 and each support roller 320, and thus adjusting the lateral position of the second connecting part 201. Additionally, a handwheel can be provided on the side of the second screw facing the cabinet door. Of course, the second adjustment mechanism 230 can also be replaced by other types of mechanisms, depending on actual needs; this embodiment does not impose excessive restrictions.

[0058] In some embodiments, the high-voltage rubber-sheathed cable reciprocating torsion testing equipment provided in this invention further includes: The counterweight mechanism 400 is located in the test space and is movable in the vertical direction. The first connecting part 101 is located on the counterweight mechanism 400.

[0059] Specifically, such as Figure 2 , Figure 3 As shown, the counterweight mechanism 400 may include a sliding seat and a counterweight block. The sliding seat can be connected to the inner wall of the test space through components such as guide rails and guide rods, and can slide in the vertical direction. The first connecting part 101 is located on the sliding seat, and the counterweight mechanism 400 can be connected to the sliding seat.

[0060] In this embodiment, the counterweight mechanism 400 acts as a tension force on the cable under test 10, equivalent to the weight of the remaining cable within the tower 30. When the swing device 200 causes the cable under test 10 to swing, the first connecting part 101 can move up and down under the tension of the cable under test 10, preventing excessive stretching of the cable under test 10 and thus better meeting the requirements of the application scenario. The specific weight of the counterweight can be determined according to actual needs, and this embodiment does not impose too many restrictions.

[0061] In some embodiments, the first connecting portion 101 and / or the second connecting portion 201 are connected to the end of the cable to be tested 10 via the clamping mechanism 500.

[0062] The clamping mechanism 500 includes a connecting plate 510 and two clamping plates 520. The connecting plate 510 is fixedly connected to the first connecting part 101 or the second connecting part 201. One end of the two clamping plates 520 is clamped and connected to the connecting plate 510, and the other end is used to clamp and connect to the end of the cable 10 to be tested.

[0063] Specifically, such as Figure 2 , Figure 6 , Figure 7 As shown, the connecting plate 510 can be connected to the first connecting part 101 or the second connecting part 201 by means of plugging, screwing, welding, etc. One end of the two clamping plates 520 clamps the connecting plate 510 and can be fastened to the connecting plate 510 by bolt assembly. The other side of each clamping plate 520 has an arc-shaped groove, and the two arc-shaped grooves are respectively clamped to the periphery of the cable to be tested 10. The inner wall of the arc-shaped groove can also be provided with anti-slip protrusions.

[0064] In addition, the clamping mechanism 500 may also include two conductive blocks 530, such as V-shaped blocks, which are disposed opposite to each other on the corresponding clamping plate 520 for crimping the conductive layer on the cable 10 under test, thereby facilitating power-on testing. The specific shape and structure of the connecting plate 510, clamping plate 520 and conductive blocks 530 can be determined according to actual needs, and no excessive restrictions are imposed in this embodiment.

[0065] In some embodiments, the high-voltage rubber-sheathed cable reciprocating torsion test equipment provided in this invention further includes a temperature and humidity controller 600 disposed in the test space.

[0066] Specifically, such as Figure 2 , Figure 3As shown, the temperature and humidity controller 600 can be installed on the equipment body 100. Some of the temperature and humidity controllers 600 are located inside the test space, and some are located outside the test space, thereby facilitating the control of parameters such as temperature and humidity within the test space to meet test requirements. The specific type, specifications, and installation location of the temperature and humidity controller 600 can be determined according to actual needs, and this embodiment does not impose excessive restrictions.

[0067] Secondly, such as Figure 8 As shown, this embodiment of the invention also provides a test method for a high-voltage rubber-sheathed cable reciprocating torsion test device, applicable to the high-voltage rubber-sheathed cable reciprocating torsion test device in any of the above embodiments, comprising the following steps: S101. Connect one end of the cable to be tested 10 to the first connection part 101 and the other end to the second connection part 201.

[0068] S102. Set the temperature in the test space to the preset temperature and the humidity to the preset humidity.

[0069] S103. The swing device 200 drives one side of the cable 10 to be tested to swing back and forth in the horizontal plane at a preset angle, and stops swinging after reaching a preset number of times.

[0070] S104. Inspect the surface quality of the cable 10 under test, and / or connect both ends of the cable 10 under test to the test circuit to test its continuity.

[0071] Specifically, in the first test group, the preset temperature was controlled at 35℃±10℃, the preset humidity at 15%RH±10%RH, and the preset angle at 30°. The preset number of torsion tests could be set according to parameters such as cable thickness. After the preset number of torsion tests was reached, the surface damage of the cable was checked, and the continuity of the cable was tested by applying current. In the second test group, the preset humidity was set at 90%RH±10%RH, with other parameters remaining unchanged. In the third test group, the preset temperature was controlled at -35℃±10℃, and the preset humidity at 15%RH±10%RH, with other parameters remaining unchanged. In the fourth test group, the preset temperature was controlled at -35℃±10℃, and the preset humidity at 90%RH±10%RH, with other parameters remaining unchanged. Thus, through four combinations of high temperature, low temperature, high humidity, and low humidity, the torsion test of the high-voltage rubber-sheathed cable under different environments was verified from multiple aspects to see if it could meet the corresponding standards.

[0072] Therefore, the test method of the high-voltage rubber-sheathed cable reciprocating torsion test equipment provided in this embodiment of the invention tests the quality and performance of the cable by simulating the actual installation arrangement of the cable between the generator 20 and the tower 30 and the actual swinging and torsion state of the cable in the cabin. This makes the test data more realistic and reliable, and the operation is simple and convenient.

[0073] The above description is merely an example and illustration of the structure of the present invention. Those skilled in the art can make various modifications or additions to the specific embodiments described, or use similar methods to replace them, as long as they do not deviate from the structure of the invention or exceed the scope defined in the claims, all of which should fall within the protection scope of the present invention.

Claims

1. A high voltage rubber cable reciprocating torsion test apparatus, characterized by, It includes a device body (100) and a swing device (200) disposed on the device body (100). The device body (100) has a test space and a first connection part (101) for connecting to one end of the cable (10) under test. At least a portion of the swing device (200) extends into the test space and has a second connection (201) for connecting to the other end of the cable under test (10). The second connection (201) and the first connection (101) are located on the same side of the axis of the swing device (200). The first connection (101) is close to the axis of the swing device (200) and lower than the second connection (201). The swing device (200) is configured to drive one side of the cable under test (10) to swing back and forth in the horizontal plane at a preset angle in order to detect the surface quality and / or continuity of the cable under test (10).

2. The high voltage rubber cable reciprocating torsion test apparatus according to claim 1, characterized by, Also includes: A support device (300) is disposed on the swing device (200) and located between the first connecting part (101) and the second connecting part (201); The supporting device (300) forms a supporting arc surface (301) above it, which is used to support the portion of the cable under test (10) between the first connecting part (101) and the second connecting part (201).

3. The high voltage rubber cable reciprocating torsion test apparatus according to claim 2, characterized by, The supporting device (300) includes a supporting seat (310) and a plurality of supporting rollers (320), the supporting seat (310) being disposed on the swing device (200); Each of the support rollers (320) is arranged at intervals on the support seat (310) in a direction away from the axis of the swing device (200) to form the support arc surface (301); each of the support rollers (320) is moved in the vertical direction to adjust the height.

4. The high voltage rubber cable reciprocating torsion test apparatus according to claim 3, characterized by The support (310) includes a base plate (311) and two side plates (312), the two side plates (312) being connected to each other on the base plate (311); Each of the support rollers (320) is located between the two side plates (312) and its two ends are connected to the corresponding side plate (312).

5. The high voltage rubber cable reciprocating torsion test apparatus according to claim 4, characterized by The supporting device (300) also includes a first adjusting mechanism (330) and is connected to the base plate (311) for driving the base plate (311) to move along the axis away from or close to the swing device (200).

6. The high voltage rubber cable reciprocating torsion test apparatus according to claim 4, characterized by The swing device (200) includes a cantilever (210), a longitudinal arm (220), a second adjustment mechanism (230), and a drive mechanism (240). One end of the cantilever (210) is rotatably connected to the device body (100), and the other end extends into the test space. The longitudinal arm (220) is located in the test space and connected to the cantilever (210), and the second connecting part (201) is located on the longitudinal arm (220); the second adjusting mechanism (230) is driven to the longitudinal arm (220) to drive the longitudinal arm (220) to move along the axis away from or close to the swing device (200); the driving mechanism (240) is driven to the cantilever (210) to drive the cantilever (210) to reciprocate and swing a preset angle in the horizontal plane.

7. A high voltage sheathed cable reciprocating torsion test apparatus according to any one of claims 1 to 6, characterised in that, Also includes: A counterweight mechanism (400) is located within the test space and is movable in the vertical direction, with the first connecting part (101) located on the counterweight mechanism (400).

8. A high voltage sheathed cable reciprocating torsion test apparatus according to any one of claims 1 to 6, characterised in that, The first connecting part (101) and / or the second connecting part (201) are connected to the end of the cable to be tested (10) via a clamping mechanism (500); The clamping mechanism (500) includes a connecting plate (510) and two clamping plates (520). The connecting plate (510) is fixedly connected to the first connecting part (101) or the second connecting part (201). One end of the two clamping plates (520) is clamped and connected to the connecting plate (510), and the other end is used to clamp and connect to the end of the cable (10) to be tested.

9. The high-voltage rubber-sheathed cable reciprocating torsion testing equipment according to any one of claims 1 to 6, characterized in that, Also includes: A temperature and humidity controller (600) is installed in the test space.

10. A method for testing the reciprocating torsion of high-voltage rubber-sheathed cables, applied to the high-voltage rubber-sheathed cable reciprocating torsion testing equipment as described in any one of claims 1 to 9, characterized in that, include: One end of the cable to be tested (10) is connected to the first connection part (101), and the other end is connected to the second connection part (201). Set the temperature and humidity within the test space to a preset temperature and a preset humidity. The swing device (200) drives one side of the cable under test (10) to swing back and forth in the horizontal plane at a preset angle, and stops swinging after reaching a preset number of times; The surface quality of the cable under test (10) is tested, and / or both ends of the cable under test (10) are connected to a test circuit to test continuity.

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