Superconducting cable relay interface

Abstract

The utility model discloses a superconducting cable relay interface comprising a cable protection layer, the inner wall of the cable protection layer is fixedly connected with a shielding layer, the inner wall of the shielding layer is fixedly connected with an insulating layer, one end of the insulating layer is fixedly connected with an insulating butt joint cylinder, and the other end of the insulating butt joint cylinder is fixedly connected with a cable. The superconducting cable relay interface comprises an insulating layer, an outer superconducting layer, an inner superconducting layer, an inner butt joint cylinder, an outer butt joint cylinder, an insulating support frame and a shielding butt joint cylinder, one side of the outer surface of the insulating butt joint cylinder is fixedly connected with an insulating support frame, and one side of the outer surface of the shielding layer is fixedly connected with a shielding butt joint cylinder. During welding, the three insulation butt joint cylinders can support each other through the insulation supporting frame, meanwhile, the optimal cable shielding layer electrical connection position can be rapidly positioned, the additional electromagnetic shielding effect is further provided, and the integrated shielding butt joint cylinders are convenient to install and can provide a good place for liquid nitrogen cooling of internal cables.

Description

Technical Field

[0001] The utility model relates to the technical field of superconducting cables, in particular to a superconducting cable relay interface. Background Art

[0002] Superconducting cable is a type of cable made of superconductors. It has the advantages of large capacity, low loss, energy saving and environmental protection. It has been widely used in the power industry. Superconducting cable uses flowing liquid nitrogen as a cooling medium to enable the superconducting cable to operate in a superconducting state.

[0003] With the development of superconducting cable technology, long-length superconducting cables have also been widely used. The length of long-length superconducting cables is usually more than 5 kilometers, and a cooling system relay station is required to enhance the cooling capacity and flow rate of the liquid nitrogen cycle. However, the superconducting cable body is a continuous closed whole. The splicing of long-length superconducting cables is achieved through superconducting cable intermediate joints or superconducting cable terminals. However, the existing superconducting cable intermediate joints or superconducting cable terminals cannot be well connected to the cooling system relay station, resulting in unstable operation of long-length superconducting cables. Utility Model Content

[0004] The main purpose of the utility model is to provide a superconducting cable relay interface, which can effectively solve the problems in the background technology.

[0005] In order to achieve the above purpose, the technical solution adopted by the utility model is:

[0006] A superconducting cable relay interface comprises a cable protective layer, the inner wall of the cable protective layer is fixedly connected to a shielding layer, the inner wall of the shielding layer is fixedly connected to an insulating layer, the inner wall of the insulating layer is fixedly connected to an outer superconducting layer, the inner wall of the outer superconducting layer is fixedly connected to an inner superconducting layer, the inner wall of the inner superconducting layer is fixedly connected to a cable, one end of the inner superconducting layer is fixedly connected to an inner butt sleeve, one end of the outer superconducting layer is fixedly connected to an outer butt sleeve, one end of the insulating layer is fixedly connected to an insulating butt sleeve, one side of the outer surface of the insulating butt sleeve is fixedly connected to an insulating support frame, and one side of the outer surface of the shielding layer is fixedly connected to a shielding butt sleeve.

[0007] In order to achieve the purpose of cable connection, as a superconducting cable relay interface of the utility model, the cable is fixedly connected to the inner wall of the inner layer docking sleeve and is connected to the superconducting cable line on the other side.

[0008] In order to achieve the purpose of stabilizing the relay interface, as a superconducting cable relay interface of the utility model, the outer layer butt joint sleeve is fixedly connected to the inner layer butt joint sleeve and the insulating butt joint sleeve.

[0009] In order to facilitate welding of the shielding butt sleeve, as a superconducting cable relay interface of the utility model, a welding block is fixedly connected to one side of the outer surface of the shielding layer, and the welding block is fixedly connected to one side of the outer surface of the shielding butt sleeve.

[0010] In order to facilitate the cooling of the cable, as a superconducting cable relay interface of the utility model, one side of the outer surface of the shielding butt joint cylinder is fixedly connected to a liquid nitrogen inlet pipe, and one side of the outer surface of the shielding butt joint cylinder is fixedly connected to a liquid nitrogen outlet pipe.

[0011] In order to achieve the purpose of maintaining a constant temperature of the relay interface, as a superconducting cable relay interface of the utility model, the outer surface of the cable protective layer is fixedly connected to the cable shell, and the outer surface of the cable shell is fixedly connected to the insulation layer.

[0012] In order to achieve the purpose of monitoring and observing the temperature of the relay interface, as a superconducting cable relay interface of the utility model, a temperature sensor is fixedly connected to one side of the outer surface of the insulation layer.

[0013] Compared with the prior art, the present invention has the following beneficial effects:

[0014] 1. The superconducting cable relay interface is provided with a shielding layer, an insulating layer, an outer superconducting layer, an inner superconducting layer, an inner butt sleeve, an outer butt sleeve, an insulating butt sleeve, an insulating support frame and a shielding butt sleeve. The insulating layer and the insulating butt sleeve, the outer superconducting layer and the outer butt sleeve, and the inner superconducting layer and the inner butt sleeve are connected by welding. During welding, the three insulating butt sleeves can support each other through the insulating support frame, and at the same time, the best electrical connection of the cable shielding layer can be quickly located, and an additional electromagnetic shielding effect is also provided. The integrated shielding butt sleeve is easy to install and can provide a good place for liquid nitrogen cooling of the internal cable.

[0015] 2. The superconducting cable relay interface is provided with a shielded butt joint sleeve, a liquid nitrogen inlet pipe, a liquid nitrogen discharge pipe, an insulation layer and a temperature sensor. In order to provide a low-temperature environment for the superconducting cable, liquid nitrogen is added to the gap between the shielded butt joint sleeve and the insulating butt joint sleeve through the liquid nitrogen inlet pipe. The liquid nitrogen discharge pipe is located directly above the outer surface of the shielded butt joint sleeve. The liquid nitrogen situation in the liquid nitrogen discharge pipe can be observed to determine the amount of liquid nitrogen inside. At the same time, the temperature sensor can detect the environment outside the relay interface. The insulation layer can reduce the speed of change of the temperature of the relay interface. The situation of liquid nitrogen and changes in the surrounding environment can be easily observed, which facilitates daily maintenance and management of the relay interface. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a front view structural diagram of a superconducting cable relay interface according to Example 1 of the present utility model;

[0017] Figure 2 This is a schematic structural diagram of an insulating support frame of a superconducting cable relay interface according to Example 1 of the present utility model;

[0018] Figure 3 This is a schematic diagram of the welding block structure of a superconducting cable relay interface in Example 1 of the utility model;

[0019] Figure 4 This is a schematic diagram of the cable structure of a superconducting cable relay interface in Example 1 of the present utility model;

[0020] Figure 5 This is a schematic diagram of the structure of the inner butt joint sleeve of a superconducting cable relay interface in Example 1 of the utility model.

[0021] In the figure: 1. Insulation layer; 2. Liquid nitrogen inlet pipe; 3. Temperature sensor; 4. Liquid nitrogen outlet pipe; 5. Cable housing; 6. Shielding butt joint sleeve; 7. Insulation support frame; 8. Cable; 9. Inner butt joint sleeve; 10. Outer butt joint sleeve; 11. Insulation butt joint sleeve; 12. Welding block; 13. Cable protective layer; 14. Inner superconducting layer; 15. Outer superconducting layer; 16. Insulation layer; 17. Shielding layer. DETAILED DESCRIPTION

[0022] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0023] Example 1

[0024] like Figure 1-5 As shown, a superconducting cable relay interface includes a cable protective layer 13, the inner wall of the cable protective layer 13 is fixedly connected to a shielding layer 17, the inner wall of the shielding layer 17 is fixedly connected to an insulating layer 16, the inner wall of the insulating layer 16 is fixedly connected to an outer superconducting layer 15, the inner wall of the outer superconducting layer 15 is fixedly connected to an inner superconducting layer 14, the inner wall of the inner superconducting layer 14 is fixedly connected to a cable 8, one end of the inner superconducting layer 14 is fixedly connected to an inner butt tube 9, one end of the outer superconducting layer 15 is fixedly connected to an outer butt tube 10, one end of the insulating layer 16 is fixedly connected to an insulating butt tube 11, one side of the outer surface of the insulating butt tube 11 is fixedly connected to an insulating support frame 7, and one side of the outer surface of the shielding layer 17 is fixedly connected to a shielding butt tube 6.

[0025] During specific use, through the arrangement of the insulating layer 16, the outer superconducting layer 15, the inner superconducting layer 14, the inner docking tube 9, the outer docking tube 10, the insulating docking tube 11, the insulating support frame 7 and the shielding docking tube 6, the insulating layer 16 and the insulating docking tube 11, the outer superconducting layer 15 and the outer docking tube 10, and the inner superconducting layer 14 and the inner docking tube 9 are connected by welding. During welding, the three insulating docking tubes 11 can support each other through the insulating support frame 7, and the influence between the three cables 8 can also be reduced. The integrated shielding docking tube 6 is convenient for welding.

[0026] In this embodiment, the cable 8 is fixedly connected to the inner wall of the inner butt-jointing sleeve 9 and is connected to the superconducting cable on the other side.

[0027] During specific use, by setting the cable 8 and the inner docking sleeve 9, the cable 8 can be connected through the relay interface.

[0028] In this embodiment, the outer butt joint sleeve 10 is fixedly connected to the inner butt joint sleeve 9 and the insulating butt joint sleeve 11 .

[0029] During specific use, the inner butt joint sleeve 9, the outer butt joint sleeve 10 and the insulating butt joint sleeve 11 are arranged so that the relay interface can be stably connected to the cable 8.

[0030] In this embodiment, a welding block 12 is fixedly connected to one side of the outer surface of the shielding layer 17 , and the welding block 12 is fixedly connected to one side of the outer surface of the shielding butt joint sleeve 6 .

[0031] During specific use, the provision of the welding block 12 can make the welding between the shielding butt joint sleeve 6 and the shielding layer 17 more stable and provide better sealing.

[0032] In this embodiment, one side of the outer surface of the shielding butt joint cylinder 6 is fixedly connected to the liquid nitrogen inlet pipe 2 , and one side of the outer surface of the shielding butt joint cylinder 6 is fixedly connected to the liquid nitrogen outlet pipe 4 .

[0033] During specific use, by setting the liquid nitrogen inlet pipe 2 and the liquid nitrogen outlet pipe 4, liquid nitrogen can be conveniently added to the gap between the shielding docking sleeve 6 and the insulating docking sleeve 11, and the liquid nitrogen outlet pipe 4 can better observe the amount of liquid nitrogen.

[0034] In this embodiment, the outer surface of the cable protective layer 13 is fixedly connected to the cable outer shell 5 , and the outer surface of the cable outer shell 5 is fixedly connected to the thermal insulation layer 1 .

[0035] During specific use, the provision of the thermal insulation layer 1 can ensure that the temperature of the relay interface is stable and reduce the waste of resources.

[0036] In this embodiment, a temperature sensor 3 is fixedly connected to one side of the outer surface of the thermal insulation layer 1 .

[0037] During specific use, the temperature sensor 3 can be provided to monitor and record the temperature change at the relay interface, which is convenient for the staff to perform routine maintenance on the relay interface.

[0038] Working principle: When installing the relay interface, the insulating layer 16 and the insulating docking tube 11, the outer superconducting layer 15 and the outer docking tube 10, and the inner superconducting layer 14 and the inner docking tube 9 are connected by welding. During welding, the three insulating docking tubes 11 can support each other through the insulating support frame 7, which can reduce the electrical impact between the three cables 8. The integrated shielding docking tube 6 is easy to weld, and the welding block 12 can make the welding between the shielding docking tube 6 and the shielding layer 17 more stable and better sealed. After the welding is completed, liquid nitrogen is added to the gap between the shielding docking tube 6 and the insulating docking tube 11 through the liquid nitrogen inlet tube 2. The liquid nitrogen discharge pipe 4 can better observe the amount of liquid nitrogen. The insulation layer 1 can ensure the temperature of the relay interface is stable and reduce resource waste. The temperature sensor 3 can monitor and record temperature changes at the relay interface, which is convenient for staff to perform daily maintenance of the relay interface.

[0039] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The above embodiments and descriptions are merely illustrative of the principles of the present invention. Various changes and improvements may be made to the present invention without departing from the spirit and scope of the present invention. Such changes and improvements are intended to fall within the scope of the present invention. The scope of protection claimed in this invention is defined by the appended claims and their equivalents.

Claims

1. A superconducting cable relay interface, comprising a cable protective layer (13), characterized in that: The inner wall of the cable protective layer (13) is fixedly connected to a shielding layer (17), the inner wall of the shielding layer (17) is fixedly connected to an insulating layer (16), the inner wall of the insulating layer (16) is fixedly connected to an outer superconducting layer (15), the inner wall of the outer superconducting layer (15) is fixedly connected to an inner superconducting layer (14), the inner wall of the inner superconducting layer (14) is fixedly connected to a cable (8), one end of the inner superconducting layer (14) is fixedly connected to an inner butt joint sleeve (9), one end of the outer superconducting layer (15) is fixedly connected to an outer butt joint sleeve (10), one end of the insulating layer (16) is fixedly connected to an insulating butt joint sleeve (11), one side of the outer surface of the insulating butt joint sleeve (11) is fixedly connected to an insulating support frame (7), and one side of the outer surface of the shielding layer (17) is fixedly connected to a shielding butt joint sleeve (6).

2. A superconducting cable relay interface according to claim 1, characterized in that: The cable (8) is fixedly connected to the inner wall of the inner butt-jointing sleeve (9) and is connected to the superconducting cable line on the other side.

3. A superconducting cable relay interface according to claim 1, characterized in that: The outer butt joint sleeve (10) is fixedly connected to the inner butt joint sleeve (9) and the insulating butt joint sleeve (11).

4. A superconducting cable relay interface according to claim 1, characterized in that: A welding block (12) is fixedly connected to one side of the outer surface of the shielding layer (17), and the welding block (12) is fixedly connected to one side of the outer surface of the shielding butt joint sleeve (6).

5. A superconducting cable relay interface according to claim 1, characterized in that: One side of the outer surface of the shielding docking cylinder (6) is fixedly connected to a liquid nitrogen inlet pipe (2), and one side of the outer surface of the shielding docking cylinder (6) is fixedly connected to a liquid nitrogen outlet pipe (4).

6. A superconducting cable relay interface according to claim 1, characterized in that: The outer surface of the cable protective layer (13) is fixedly connected to the cable outer shell (5), and the outer surface of the cable outer shell (5) is fixedly connected to the thermal insulation layer (1).

7. A superconducting cable relay interface according to claim 6, characterized in that: A temperature sensor (3) is fixedly connected to one side of the outer surface of the thermal insulation layer (1).

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