Device capable of simultaneously carrying out high-temperature and low-temperature torsion tests on multiple groups of wind energy cables

Abstract

The invention provides a device capable of simultaneously carrying out high and low temperature torsion tests on multiple groups of wind energy cables, which comprises a test box body, a circulating air pipe, a heat exchange assembly, a torsion assembly and a control assembly, and is characterized in that the circulating air pipe is connected with the test box body, the heat exchange assembly is arranged in the test box body, and the heat exchange assembly is communicated with the circulating air pipe; the circulating air pipe comprises a plurality of groups of concentric-square-shaped ventilation structures; each concentric-square-shaped ventilation structure comprises two vertical pipes and two transverse pipes, and the two vertical pipes are communicated through the two transverse pipes so that the circulating air pipes can form a concentric-square shape. The torsion assemblies are arranged at the top ends of the two vertical pipes of each set of concentric-square-shaped ventilation structure and used for conducting torsion tests on the cables. The heat exchange assembly is connected with the control assembly and used for adjusting the temperature in the circulating air pipe. The test efficiency of the cable can be improved. The two torsion assemblies are arranged, two sets of cables can be tested at the same time, the test period is greatly shortened, and the test efficiency is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of wind energy cable test equipment, and particularly to a device for simultaneously conducting high and low temperature torsion tests on multiple groups of wind energy cables. Background Art

[0002] During the operation of a wind turbine, the nacelle rotates with the wind direction, causing the cables on the upper part of the tower to twist repeatedly. At the same time, the cables are exposed to a harsh environment of alternating high and low temperatures for a long time and need to have excellent anti-torsion and temperature resistance properties. Currently, traditional test equipment has the following defects:

[0003] 1. Only one cable can be tested at a time, with low efficiency and a test cycle as long as one month;

[0004] 2. The temperature control accuracy is insufficient, affecting the accuracy of data;

[0005] 3. The equipment has high noise and a poor working environment.

[0006] To solve the above problems, the present invention designs a device for simultaneously conducting high and low temperature torsion tests on multiple groups of wind energy cables. Summary of the Invention

[0007] In view of the above-mentioned disadvantages of the prior art, the purpose of the present invention is to provide a device for simultaneously conducting high and low temperature torsion tests on multiple groups of wind energy cables, which is used to solve the problems of low equipment turnover efficiency and long queuing time in the prior art, and is an efficient and accurate multi-cable synchronous test solution.

[0008] To achieve the above purpose and other related purposes, the present invention provides a device for simultaneously conducting high and low temperature torsion tests on multiple groups of wind energy cables, including a test box body, a circulating air duct, a heat exchange component, a torsion component, and a control component. The circulating air duct is connected to the test box body, the heat exchange component is arranged in the test box body and is communicated with the circulating air duct; the circulating air duct includes several groups of figure-eight ventilation structures; each group of figure-eight ventilation structures includes two vertical pipes and two horizontal pipes, and the two vertical pipes are connected by the two horizontal pipes to form a figure-eight shape for the circulating air duct; the torsion components are respectively arranged at the tops of the two vertical pipes of each group of the figure-eight ventilation structures for conducting torsion tests on the cables; the heat exchange component is connected to the control component for adjusting the temperature in the circulating air duct.

[0009] Preferably, the heat exchange component includes a heater, a cooler, a blower, and a temperature monitoring system. The heater and the cooler are both arranged in the test box body, and the blower blows the hot air generated by the heater and the cold air generated by the cooler into the circulating air duct; the temperature monitoring system is arranged in the circulating air duct for monitoring the temperature in the circulating air duct; the heater, the cooler, and the temperature monitoring system are all communicatively connected to the control component.

[0010] Preferably, the temperature monitoring system includes a plurality of temperature sensors disposed in the circulation air duct; a plurality of fans are also disposed in the circulation air duct to make the temperature distribution in the circulation air duct uniform.

[0011] Preferably, a partition is further disposed between the heat exchange component and the circulation air duct, and the partition is provided with mesh holes.

[0012] Preferably, the torsion assembly includes a cable chuck, a chuck fixing seat, a rotary drive source, a drive source fixing seat, and a fixing frame. The cable chuck is rotatably disposed on the chuck fixing seat; the rotary drive source is disposed on the drive source fixing seat, and the rotary drive source is in transmission connection with the cable chuck; the drive source fixing seat is disposed on the fixing frame in a liftable manner; the drive source fixing seat and the chuck fixing seat are tightly connected; the top ends of the two vertical pipes of the circulation air duct are open, and the chuck fixing seat can move up and down in the top openings of the vertical pipes.

[0013] Preferably, a plurality of guide rails are disposed on the fixing frame, and a plurality of sliders are disposed on the drive source fixing seat. The sliders are slidably connected to the guide rails; a lifting drive source is further connected to the drive source fixing seat; both the lifting drive source and the rotary drive source are in communication connection with the control component.

[0014] Preferably, the two horizontal pipes of the circulation air duct are respectively an upper horizontal pipe and a lower horizontal pipe, and an extension pipe is further disposed on the lower horizontal pipe; the extension pipe penetrates through the test box body, and an end cover is further disposed at the end of the extension pipe. A clamp is disposed in the extension pipe for clamping the cable.

[0015] Preferably, a hanger is further disposed outside the extension pipe, and a lifting tool is disposed on the hanger.

[0016] Preferably, the test box body adopts a double shell.

[0017] Preferably, an operation door is further opened on the test box body.

[0018] As described above, the multi-group wind energy cable high and low temperature torsion test device of the present invention has the following beneficial effects:

[0019] 1. The present application can improve the test efficiency of the cable. Two torsion assemblies are provided in the present application, and two groups of cables can be tested simultaneously, greatly shortening the test cycle and improving the test efficiency.

[0020] 2. The present application can quickly respond to temperature changes. The heat exchange component in the present application can quickly increase and decrease the temperature in the circulation air duct, shorten the test preparation time, and can adapt to different test requirements.

[0021] 3. This application has an accurate temperature control function. A control component is provided in this application, which can ensure the stability and accuracy of the temperature in the circulating air duct during the test through the control component. The control panel is easy to learn and use, reducing the training time of operators.

[0022] 4. The temperature distribution in the circulating air duct of this application is uniform. The "return" shaped circulating air duct is adopted in this application. Compared with the traditional L-shaped circulating air duct, the temperature distribution is more uniform, improving the consistency of test results.

[0023] 5. This application can clamp the cable conveniently. An operation door is provided on the vertical pipe of the circulating air duct in this application, which is convenient for operators to fix and observe the cable, improving the convenience and safety of the test.

[0024] 6. The test box body in this application is made of stainless steel and galvanized steel plates, improving the durability and corrosion resistance of the equipment.

[0025] 7. This application can improve the working environment. The low-noise design of this application reduces the impact on the surrounding environment, providing a more comfortable operation experience for operators.

[0026] 8. This application simplifies the operation process, makes the equipment easy to use, and reduces the operation difficulty. Brief Description of the Drawings

[0027] Figure 1 It is a front view space schematic diagram of the device for simultaneously conducting high and low temperature torsion tests on multiple groups of wind energy cables according to the present invention;

[0028] Figure 2 It is a rear view space schematic diagram of the device for simultaneously conducting high and low temperature torsion tests on multiple groups of wind energy cables according to the present invention;

[0029] Figure 3 It is a rear view space schematic diagram of the device for simultaneously conducting high and low temperature torsion tests on multiple groups of wind energy cables according to the present invention; (removing the test box body)

[0030] Figure 4 It is a left view of the device for simultaneously conducting high and low temperature torsion tests on multiple groups of wind energy cables according to the present invention.

[0031] Explanation of Reference Numerals in the Drawings:

[0032] 1. Test box body; 2. Circulating air duct; 201. Vertical pipe; 202. Upper horizontal pipe; 203. Lower horizontal pipe; 204. Extension pipe; 3. Chuck fixing seat; 4. Driving source fixing seat; 5. Slide block; 6. Control panel; 7. Connecting block; 8. Rotary driving source; 9. Lifting driving source; 10. End cover; 11. Hanger; 12. Heat exchange component; 13. Partition board; 14. Operation door. Detailed Description of the Invention

[0033] The following specific embodiments illustrate the implementation manners of the present invention. Those skilled in the art can easily understand other advantages and effects of the present invention from the content disclosed in this specification.

[0034] It should be noted that the structures, ratios, sizes, etc. shown in the drawings of this specification are only used to cooperate with the content disclosed in the specification for those skilled in the art to understand and read, and are not used to limit the limiting conditions for the implementation of the present invention. Therefore, they do not have substantial technical significance. Any modification of the structure, change of the proportional relationship, or adjustment of the size, without affecting the effects that the present invention can produce and the purposes that can be achieved, should still fall within the scope covered by the technical content disclosed in the present invention. At the same time, the terms such as "upper", "lower", "left", "right", "middle", and "one" cited in this specification are only for the convenience of clear description and are not used to limit the scope for the implementation of the present invention. The change or adjustment of their relative relationships, without substantial change in the technical content, should also be regarded as the scope for the implementation of the present invention.

[0035] The present invention provides a multi - group wind - energy cable high - and - low - temperature torsion test device that can perform tests simultaneously. For the convenience of description, the length direction of the test chamber 1 is defined as the left - right direction, the width direction of the test chamber 1 is defined as the front - back direction, and the height direction of the test chamber 1 is defined as the up - down direction. Therefore, Figure 1 a spatial rectangular coordinate system is established, in which the positive and negative directions of the X - axis are the left direction and the right direction respectively, the positive and negative directions of the Y - axis are the back direction and the front direction respectively, and the positive and negative directions of the Z - axis are the up direction and the down direction respectively.

[0036] As Figures 1-4 shown, the present invention provides a multi - group wind - energy cable high - and - low - temperature torsion test device that can perform tests simultaneously, including a test chamber 1, a circulation air duct 2, a heat - exchange component 12, a torsion component, and a control component. The circulation air duct 2 is connected to the test chamber 1. The heat - exchange component 12 is arranged in the test chamber 1 and is communicated with the circulation air duct 2. The circulation air duct 2 includes several groups of figure - eight ventilation structures. Each group of figure - eight ventilation structures includes two vertical pipes 201 and two horizontal pipes. The two vertical pipes 201 are connected by the two horizontal pipes to form a figure - eight shape for the circulation air duct 2. The torsion components are respectively arranged at the tops of the two vertical pipes 201 of each group of figure - eight ventilation structures and are used to perform torsion tests on the cables. The heat - exchange component 12 is connected to the control component and is used to adjust the temperature in the circulation air duct 2.

[0037] The multi-group high and low temperature torsion test device for wind energy cables of the present invention involves two torsion components, which are respectively arranged at the top ends of two vertical pipes 201, and can simultaneously perform torsion tests on at least two cables, greatly shortening the test cycle and improving the test efficiency. In this application, a heat exchange component 12 and a control component are provided, which can accurately adjust the temperature in the circulating air duct 2 and improve the accuracy of the test results. In this embodiment, the number of the double-loop ventilation structures is one group, so the number of the torsion components is two. In other embodiments, the number of the double-loop ventilation structures can be several groups.

[0038] Preferably, as Figure 3 , Figure 4 shown, the heat exchange component 12 includes a heater, a cooler, a blower, and a temperature monitoring system. The heater and the cooler are both arranged in the test box body 1, and the blower blows the hot air generated by the heater and the cold air generated by the cooler into the circulating air duct 2; the temperature monitoring system is arranged in the circulating air duct 2 for monitoring the temperature in the circulating air duct 2; the heater, the cooler, and the temperature monitoring system are all communicatively connected to the control component.

[0039] Furthermore, in this embodiment, the temperature monitoring system includes a plurality of temperature sensors uniformly arranged in the circulating air duct 2; a plurality of fans are also arranged in the circulating air duct 2 to make the temperature distribution in the circulating air duct 2 uniform. The temperature sensors are communicatively connected to the control component.

[0040] Preferably, as Figure 3 , Figure 4 shown, a partition 13 is also arranged between the heat exchange component 12 and the circulating air duct 2, and the partition 13 is provided with mesh holes.

[0041] In this embodiment, the heater adopts an electric heater, and the cooler adopts a combination of a compressor and a cooling tower. The electric heater converts electrical energy into heat energy and blows the hot air towards the partition 13 through the blower. The mesh holes on the partition 13 filter the hot air and then enter the circulating air duct 2, so that the air in the circulating air duct 2 is heated. A plurality of fans are arranged in the circulating air duct 2, and the rotation of the fans drives the circulation of the hot air, making the temperature in the circulating air duct 2 evenly distributed. A plurality of temperature sensors continuously detect the temperature of the air in the circulating air duct 2. When the temperature reaches the expected set range, the opening and closing and power of the heater and the cooler are adjusted to keep the temperature in the circulating air duct 2 stable within the expected set range, and then the torsion component is started to perform a torsion test on the cable. Correspondingly, when it is necessary to lower the temperature in the circulating air duct 2, the cooler is started, and the cooling process is basically the same as the heating process, so it will not be repeated here.

[0042] Preferably, as Figures 1-3As shown, the torsion assembly includes a cable chuck (not shown in the figure), a chuck fixing base 3, a rotary drive source 8, a drive source fixing base 4, and a fixing frame (not shown in the figure). The cable chuck is rotatably arranged on the chuck fixing base 3; the rotary drive source 8 is arranged on the drive source fixing base 4, and the rotary drive source 8 is in transmission connection with the cable chuck; the drive source fixing base 4 is arranged on the fixing frame in a liftable manner; the drive source fixing base 4 and the chuck fixing base 3 are firmly connected by a connecting block 7; the tops of the two vertical pipes 201 of the circulating air duct 2 are open, and the chuck fixing base 3 can move up and down in the top openings of the vertical pipes 201.

[0043] Furthermore, a plurality of guide rails are arranged on the fixing frame, and a plurality of sliders 5 are arranged on the drive source fixing base 4. The sliders 5 are slidably connected with the guide rails; a lifting drive source 9 is also connected to the drive source fixing base 4; both the lifting drive source 9 and the rotary drive source 8 are in communication connection with the control assembly. The fixing frame is arranged in a high place, and the fixing frame should be firm and flat, with good air circulation nearby and no high-temperature source nearby.

[0044] In this embodiment, the rotary drive source 8 adopts a motor, and the torsion angle, torsion speed, and number of torsion turns of the rotary drive source 8 can all be set through the control assembly. The lifting drive source 9 adopts an electric cylinder, and the fixed end of the lifting drive source 9 is arranged on the fixing frame, and the movable end of the lifting drive source 9 is connected to the drive source fixing base 4. Thus, when the piston rod of the lifting drive source 9 extends, the drive source fixing base 4 will rise along the guide rail, and the chuck fixing base 3 will rise together with the drive source fixing base 4. The chuck fixing base 3 rises from the top opening of the vertical pipe 201, and the operator can use a winch to lift the cable from the bottom end of the vertical pipe 201 to the top end of the vertical pipe 201 and clamp it on the cable chuck. After the cable is clamped, the drive source fixing base 4 is lowered along the guide rail, and the drive source fixing base 4 falls back into the top opening of the vertical pipe 201, that is, the top opening of the vertical pipe 201 is sealed.

[0045] Preferably, as Figure 1 、 Figure 3 shown, the two horizontal pipes of the circulating air duct 2 are respectively an upper horizontal pipe 202 and a lower horizontal pipe 203, and an extension pipe 204 is also arranged on the lower horizontal pipe 203; the extension pipe 204 penetrates through the test box body 1, and an end cover 10 is also arranged at the end of the extension pipe 204. A clamp is arranged in the extension pipe 204 for clamping the cable.

[0046] Furthermore, as Figure 1 shown, a hanger 11 is also arranged on the outside of the extension pipe 204, and a lifting tool is arranged on the hanger 11. The bottom end of the hanger 11 is firmly connected to the test box body 1. The end cover 10 is hingedly connected to the top end of the extension pipe 204. The lifting tool can adopt an electric hoist.

[0047] Furthermore, as Figure 1 、Figure 3 As shown in the figure, an operation door 14 is also provided on the test box body 1. The operation door 14 is communicated with the lower horizontal pipe 203 of the circulating air duct 2. That is, when the operation door 14 is opened, it can enter the lower horizontal pipe 203 of the circulating air duct 2 through the operation door 14. Therefore, when installing the cable into the circulating air duct 2, first open the operation door 14, lower the steel wire of the winch to the operation door 14, connect the top end of the cable to the steel wire, so as to drive the top end of the cable to rise, and then clamp the top end of the cable on the cable clamp head. Rotate the end cover 10 around the hinge point with the extension pipe 204, and the operator clamps the tail end of the cable in the fixture of the extension pipe 204, so as to fix the cable in the circulating air duct 2. When the diameter of the cable is large and the mass is heavy, it is necessary to hoist the tail end of the cable to the fixture of the extension pipe 204 through a lifting tool to assist in the fixation of the cable.

[0048] Preferably, in this embodiment, the test box body 1 is a double shell, with the inner layer made of stainless steel plate and the outer layer made of galvanized steel plate, which can effectively improve the durability and corrosion resistance of the equipment.

[0049] Preferably, as Figure 2 、 Figure 3 shown in the figure, the control component includes a controller, an information processor, and a control panel 6. The controller and the information processor are both arranged inside the drive source fixing seat 4, and the control panel 6 is arranged on the rear outer wall of the drive source fixing seat 4. The information processor is communicatively connected with the temperature sensor and the control panel 6. The controller is communicatively connected with the information processor, the heater, the cooler, the blower, the rotary drive source 8, and the lifting drive source 9.

[0050] In this embodiment, when the operation door 14 is closed, the end cover 10 is closed, and the chuck fixing seat 3 falls into the top opening of the vertical pipe 201, the operation door 14 is hermetically connected to the test box body 1; the end cover 10 is hermetically connected to the extension pipe 204; the chuck fixing seat 3 is hermetically connected to the top opening of the vertical pipe 201, so as to ensure the temperature stability in the circulating air duct 2 as much as possible.

[0051] The multi-group wind energy cable high and low temperature torsion test device that can be carried out simultaneously involved in the present invention has the following working principle:

[0052] First, the operator manufactures and assembles the above-mentioned various components according to the Figures 1-4 description of the attached drawings and the above-mentioned various components.

[0053] Secondly, after all components are installed, the operator starts the lifting drive source 9 through the control panel 6. The lifting drive source 9 drives the drive source fixing base 4 to rise. The drive source fixing base 4 drives the chuck fixing base 3 to rise through the connecting block 7. The chuck fixing base 3 rises from the top opening of the vertical pipe 201. Then the operator puts the steel wire of the winch into the bottom end of the vertical pipe 201 from the top opening of the vertical pipe 201. The operator opens the operation door 14, and the lower horizontal pipe 203 in the circulating air duct 2 will communicate with the outside. The operator connects the top end of the cable to the steel wire of the winch, thus lifting the top end of the cable to the top of the vertical pipe 201 and connecting the top end of the cable to the cable chuck. Then the lifting drive source 9 is started through the control panel 6 to reset the chuck fixing base 3 into the top opening of the vertical pipe 201.

[0054] The operator opens the end cover 10 and connects the tail end of the cable to the fixture in the extension pipe 204, and then closes the end cover 10 and the operation door 14. In this way, the cable is completely fixed in the circulating air duct 2.

[0055] Then, the operator sets the torsion parameters and temperature parameters through the control panel 6. The information processor receives the information and executes it through the controller. The controller starts the heat exchange component 12, and the heater or cooler generates hot air or cold air. The blower blows the hot air or cold air into the circulating air duct 2 to adjust the temperature in the circulating air duct 2. The temperature sensor in the circulating air duct 2 monitors the temperature in real time. When the temperature reaches the expected set value, the temperature sensor feeds back the information to the information processor, and the information processor adjusts the heat exchange component 12 through the controller to achieve the stability of the temperature in the circulating air duct 2. At this time, the rotary drive source 8 drives the cable chuck to rotate, and the cable twists, so as to conduct the torsion test of the cable in high and low temperature environments.

[0056] After the torsion test is completed, open the end cover 10, the operation door 14, and lift the chuck fixing base 3 from the top opening of the vertical pipe 201, and then the cable can be removed.

[0057] In addition, since there are two torsion components in this application, the high and low temperature torsion tests of two cables can be carried out simultaneously. Under the condition of the same high and low temperature parameters, by controlling different cable specifications, the torsion test data of different specification cables can be obtained.

[0058] The multi-group wind energy cable high and low temperature torsion test device that can be carried out simultaneously involved in the present invention is provided with a digital display screen on the control panel 6, which is convenient for employees to master the test status. It can realize constant temperature large circulation and ensure the stability of experimental conditions. This application adopts the "return" shaped circulating air duct 2, and compared with the L-shaped circulating air duct in the prior art, the temperature distribution is more uniform. There are two torsion components set in this application, which can simultaneously conduct high and low temperature tests and torsion tests on at least two cables, and can significantly improve the test efficiency.

[0059] Therefore, the present invention effectively overcomes various disadvantages in the prior art and has high industrial utilization value.

[0060] The above embodiments are merely illustrative of the principles and effects of the present invention and are not intended to limit the present invention. Any person familiar with this technology can modify or change the above embodiments without departing from the spirit and scope of the present invention. Therefore, all equivalent modifications or changes made by those with ordinary knowledge in the technical field without departing from the spirit and technical idea disclosed by the present invention should still be covered by the claims of the present invention.

Claims

1. A device capable of simultaneously conducting high and low temperature torsion tests on multiple groups of wind power cables, characterized in that: It comprises a test box (1), a circulating air duct (2), a heat exchange component (12), a torsion component, and a control component; The circulating air duct (2) is connected to the test box (1), the heat exchange component (12) is arranged in the test box (1), and the heat exchange component (12) is in communication with the circulating air duct (2); The circulating air duct (2) comprises a plurality of groups of U-shaped ventilation structures; each group of U-shaped ventilation structures comprises two vertical pipes (201) and two horizontal pipes, and the two vertical pipes (201) are connected via two horizontal pipes so that the circulating air duct (2) forms a U-shaped structure; The torsion components are respectively arranged at the top ends of the two vertical pipes (201) of each group of the U-shaped ventilation structure, and are used to perform a torsion test on the cable; The heat exchange component (12) is connected to the control component and is used to adjust the temperature in the circulating air duct (2).

2. The device capable of simultaneously conducting high and low temperature torsion tests on multiple groups of wind power cables according to claim 1 is characterized in that: The heat exchange component (12) comprises a heater, a cooler, a blower, and a temperature monitoring system. The heater and the cooler are both arranged in the test box (1). The blower blows the hot air generated by the heater and the cold air generated by the cooler into the circulating air duct (2). The temperature monitoring system is arranged in the circulating air duct (2) and is used to monitor the temperature in the circulating air duct (2). The heater, cooler, and temperature monitoring system are all in communication connection with the control assembly.

3. The device capable of simultaneously conducting high and low temperature torsion tests on multiple groups of wind power cables according to claim 2 is characterized in that: The temperature monitoring system comprises a plurality of temperature sensors arranged in the circulating air duct (2); a plurality of fans are also arranged in the circulating air duct (2) to ensure uniform temperature distribution in the circulating air duct (2).

4. The device capable of simultaneously conducting high and low temperature torsion tests on multiple groups of wind power cables according to claim 2 is characterized in that: A partition plate (13) is also provided between the heat exchange component (12) and the circulating air duct (2), and mesh holes are provided on the partition plate (13).

5. The device capable of simultaneously conducting high and low temperature torsion tests on multiple groups of wind power cables according to claim 1 is characterized in that: The torsion assembly comprises a cable clamp, a clamp fixing seat (3), a rotational driving source (8), a driving source fixing seat (4), and a fixing frame; the cable clamp is rotatably arranged on the clamp fixing seat (3); the rotational driving source (8) is arranged on the driving source fixing seat (4), and the rotational driving source (8) is drivingly connected to the cable clamp; the driving source fixing seat (4) is liftably arranged on the fixing frame; the driving source fixing seat (4) and the clamp fixing seat (3) are tightly connected; The top ends of the two vertical pipes (201) of the circulating air duct (2) are open, and the clamp fixing seat (3) can move up and down in the top end openings of the vertical pipes (201).

6. The device capable of simultaneously conducting high and low temperature torsion tests on multiple groups of wind power cables according to claim 5 is characterized in that: The fixing frame is provided with a plurality of guide rails, the driving source fixing seat (4) is provided with a plurality of sliders (5), and the sliders (5) are slidably connected to the guide rails; the driving source fixing seat (4) is also connected to a lifting driving source (9); the lifting driving source (9) and the rotating driving source (8) are both communicatively connected to the control component.

7. The device capable of simultaneously conducting high and low temperature torsion tests on multiple groups of wind power cables according to claim 1 is characterized in that: The two transverse tubes of the circulating air duct (2) are respectively an upper transverse tube (202) and a lower transverse tube (203), and an extension tube (204) is also provided on the lower transverse tube (203); the extension tube (204) passes through the test box (1), and an end cover (10) is also provided at the end of the extension tube (204); a clamp is provided in the extension tube (204) for clamping a cable.

8. The device capable of simultaneously conducting high and low temperature torsion tests on multiple groups of wind power cables according to claim 7 is characterized in that: A hanger (11) is also provided on the outer side of the extension tube (204), and a hanger is provided on the hanger (11).

9. The device capable of simultaneously conducting high and low temperature torsion tests on multiple groups of wind power cables according to claim 1 is characterized in that: The test box (1) adopts a double shell.

10. The device capable of simultaneously conducting high and low temperature torsion tests on multiple groups of wind power cables according to claim 1 is characterized in that: The test box (1) is also provided with an operating door (14).

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