Zero-loss depth current limiting device

Abstract

The utility model discloses a zero-loss deep current limiting device, which relates to the technical field of electric power protection devices, and specifically comprises a device body and a rotor wiring terminal, and the outer ring of the device body is fixedly connected with a conductive slip ring I and a conductive slip ring II. The stator wiring terminal matched with the slip ring stator of the first conductive slip ring is electrically connected with the current input end of the device body, and the stator wiring terminal matched with the slip ring stator of the second conductive slip ring is electrically connected with the current output end of the device body. According to the zero-loss deep current limiting device, through the arrangement of the first conductive slip ring and the second conductive slip ring, the position of the wiring terminal of the device can be changed, a worker can conveniently connect the device into a power system, the convenience of the device in use is improved, through the arrangement of the protective shell, the protective shell can protect the rotor wiring terminal, and the service life of the device is prolonged. The probability that the rotor wiring terminal is damaged is reduced, and the service life of the rotor wiring terminal is prolonged.

Description

Technical Field

[0001] The utility model relates to the technical field of power protection devices, in particular to a zero-loss deep current limiting device. Background Art

[0002] During the operation of the power system, the insulation of the components in the circuit may fail, which may cause a short circuit fault. The short circuit current is generally several times the rated current, or even more than ten times, which will cause harm to the circuit equipment. Therefore, current limiting devices are often installed in the power system to help disconnect the fault branch switch.

[0003] A zero-loss deep current limiting device is a current limiting device commonly used in existing power systems. Some of the currently disclosed zero-loss deep current limiting devices have terminal blocks that are exposed to the outside, such as the zero-loss deep current limiting device with model FLS or JSE-KSXL. When this type of current limiting device is in use, the terminal blocks of the terminal block are exposed to the outside, and the terminal blocks are easily damaged by external factors. In addition, the position of the terminal block is fixed. When the position of the terminal block is inconvenient for installation, it is necessary to change the position of the current limiting device or consume longer wires for connection, which affects the convenience of use. Based on this, the present application proposes a zero-loss deep current limiting device. Utility Model Content

[0004] The utility model provides a zero-loss depth current limiting device, which solves the problem that the position of the terminal block is fixed as proposed in the above background technology. When the position of the terminal block is not convenient for installation, the position of the current limiting device needs to be changed or longer wires need to be consumed for connection, which affects the convenience of use; and the terminal of the terminal block is easily damaged.

[0005] The utility model provides the following technical scheme: a zero-loss deep current limiting device, comprising a device body and a rotor terminal, wherein the outer ring of the device body is fixedly connected with a conductive slip ring 1 and a conductive slip ring 2, the stator terminal adapted to the slip ring stator of the conductive slip ring 1 is electrically connected to the current input end of the device body, the stator terminal adapted to the slip ring stator of the conductive slip ring 2 is electrically connected to the current output end of the device body, the outer surface of the rotor terminal adapted to the slip ring rotor of the conductive slip ring 1 is provided with a protective shell, the outer surface of another rotor terminal adapted to the slip ring rotor of the conductive slip ring 2 is provided with another protective shell, one side of the protective shell is fixedly connected with a screw, the outer ring of the screw is threadedly connected with an extrusion block, the other end of the extrusion block is tightly fitted with the protrusion of the device body, the top of the inner cavity of the protective shell is provided with a groove, the inner cavity of the groove is provided with a connecting column, the connecting column is tightly fitted with the rotor terminal, the outer ring of the connecting column is threadedly connected with a pressure cap, the outer side of the pressure cap is connected with a protective plate through a telescopic rod, and the protective plate and the pressure cap are connected through a telescopic cloth.

[0006] Preferably, the outer ring of the bottom end of the connecting column is fixedly connected with a connecting piece, the connecting piece is adapted to the groove, and the connecting piece is fixedly connected to the protective shell.

[0007] Preferably, the telescopic rod is located on the inner side of the telescopic cloth, and the telescopic rod includes a fixed tube fixedly connected to the pressure cap, a guide rod is movably connected to the inner cavity of the fixed tube, a spring is movably sleeved on the outer ring of the guide rod, one end of the spring is fixedly connected to the top of the guide rod, and the other end of the spring is fixedly connected to the bottom end of the inner cavity of the fixed tube.

[0008] Preferably, the bottom of the pressure cap is fixedly connected with a pressure ring, the pressure ring is located in the inner cavity of the protective plate, the outer ring of the pressure cap is movably sleeved with a connecting ring, and the top of the fixed tube and the top of the telescopic cloth are both fixedly connected to the bottom of the connecting ring.

[0009] Preferably, a buffer pad is fixedly connected to the inner wall of the protective shell, the buffer pad is in contact with the rotor terminal, and the protective shell is fixedly connected to the first conductive slip ring or the second conductive slip ring.

[0010] Preferably, an opening is provided on one side of the protective plate, and an isolation pad is fixedly connected to the bottom of the protective plate.

[0011] Compared with the prior art, the utility model has the following beneficial effects:

[0012] 1. The zero-loss deep current limiting device can change the position of the terminal of the device by setting the first conductive slip ring and the second conductive slip ring, so that the staff can connect the device to the power system and improve the convenience of using the device. The protective shell can protect the rotor terminal, reduce the probability of damage to the rotor terminal, and extend the service life of the rotor terminal.

[0013] 2. The zero-loss deep current limiting device is connected to the electronic system through the connecting column. The rotor terminal is protected, which further reduces the probability of damage to the rotor terminal. The connecting column can be quickly disassembled and assembled, which is convenient for replacement of the connecting column. Through the setting of the pressure cap, the pressure cap can press the conductive wire connected to the connecting column to improve the reliability of the connection between the conductive wire and the connecting column. The structure composed of the pressure cap, the protective plate and the telescopic cloth can shield and protect the connecting column, the conductive wire and the connecting column connection part, which is convenient for the use of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 This is a front view of the structure of the utility model;

[0015] Figure 2 The utility model structure Figure 1 Back side diagram;

[0016] Figure 3 This is a schematic diagram of the structure of the utility model in which the connecting column, the protective housing and the pressure cap are separated;

[0017] Figure 4 This is a cross-sectional diagram of the connection between the structural connection column and the rotor terminal of the utility model;

[0018] Figure 5 It is a schematic diagram of the explosion of the pressure cap of the utility model structure.

[0019] In the figure: 1. device body; 2. conductive slip ring 1; 3. conductive slip ring 2; 4. protective shell; 5. screw; 6. extrusion block; 7. pressure cap; 8. telescopic rod; 9. telescopic cloth; 10. protective plate; 11. pressure ring; 12. connecting column; 13. connecting piece; 14. rotor terminal; 15. groove; 16. fixing tube; 17. buffer pad; 18. spring; 19. connecting ring; 20. guide rod. DETAILED DESCRIPTION

[0020] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0021] The utility model provides a zero-loss deep current limiting device, including a device body 1. The device body 1 is a zero-loss deep current limiting device in the prior art, and its model may be JSE-KSXL. Its working principle is the prior art and will not be elaborated here. The outer ring of the device body 1 is fixedly connected with a conductive slip ring 1 2 and a conductive slip ring 2 3, and the slip ring stator of the conductive slip ring 1 2 and the slip ring stator of the conductive slip ring 2 3 are both connected to the device body 1, and the stator terminal adapted to the slip ring stator of the conductive slip ring 1 2 is electrically connected to the current input end of the device body 1, and the stator terminal adapted to the slip ring stator of the conductive slip ring 2 3 is electrically connected to the current output end of the device body 1. The outer surface of the rotor terminal 14 adapted to the slip ring rotor of the conductive slip ring 1 2 is provided with a protective shell 4, and the protective shell 4 is fixedly connected to the outer wall of the conductive slip ring 1 2, and another rotor terminal adapted to the slip ring rotor of the conductive slip ring 2 3 is provided with a protective shell 4. Another protective shell 4 is provided on the outer surface of the conductive slip ring 14, and the other protective shell 4 is fixedly connected to the outer side wall of the conductive slip ring 2 3. Through the provision of the protective shell 4, the rotor terminals 14 of the conductive slip ring 1 2 and the conductive slip ring 2 3 exposed to the outside can be in a protected state, thereby reducing the probability of the rotor terminals 14 being damaged and extending the service life of the rotor terminals 14. Under the action of external force, the position of the rotor terminals 14 can be changed, so that when the installation angle of the rotor terminals 14 is difficult to fix, the staff can change the position of the rotor terminals 14, which is convenient for connecting the device to the power system and improving the convenience of using the device.

[0022] A buffer pad 17 is fixedly connected to the inner wall of the protective shell 4, and the buffer pad 17 is in contact with the rotor terminal 14. Through the setting of the buffer pad 17, the resilience of the buffer pad 17 can reduce the force of the outer diameter acting on the rotor terminal 14, thereby improving the protective effect of the rotor terminal 14. The material of the buffer pad 17 can be insulating and thermally conductive silicone to facilitate heat dissipation of the rotor terminal 14.

[0023] A groove 15 is provided at the top of the inner cavity of the protective shell 4, and the end of the rotor terminal 14 is located in the inner cavity of the groove 15. A connecting column 12 is provided in the inner cavity of the groove 15. The outer ring of the bottom end of the connecting column 12 is fixedly connected with a connecting piece 13. The connecting piece 13 is made of insulating material and is adapted to the groove 15. When the device is used, the connecting piece 13 is connected to the protective shell 4 by bolts. Through the setting of the connecting piece 13, the connecting column 12 is fixed on the protective shell 4, and at this time, the connecting column 12 and the end of the rotor terminal 14 are in a tightly fitted state, which is convenient for the transmission of current.

[0024] The outer circle of the connecting column 12 is threadedly connected to a pressure cap 7, and the bottom of the pressure cap 7 is fixedly connected to a pressure ring 11. The pressure cap 7 and the pressure ring 11 can be used to press the conductive wire connected to the connecting column 12, so as to facilitate the connection of the conductive wire to the connecting column 12. The outer side of the pressure cap 7 is movably connected to a connecting ring 19, and the outer side of the bottom of the connecting ring 19 is fixedly connected to a telescopic cloth 9, and the other end of the telescopic cloth 9 is fixedly connected to a protective plate 10. Through the setting of the telescopic cloth 9, the telescopic cloth 9 can shield and protect the space between the protective plate 10 and the connecting ring 19. The pressure ring 11 is located in the inner cavity of the protective plate 10, and the inner side of the bottom of the connecting ring 19 is evenly fixedly connected to a telescopic rod 8, and the telescopic rod 8 is fixedly connected to the top of the protective plate 10. Through the setting of the telescopic rod 8, the position between the connecting ring 19 and the protective plate 10 can be changed, so that when the device is in use, the structure formed by the protective plate 10 and the telescopic cloth 9 can protect the part where the conductive wire is connected to the connecting column 12, which is convenient for use.

[0025] An opening is provided on one side of the protective plate 10 for accommodating the conductive wire to facilitate the use of the conductive wire. An isolation pad is fixedly connected to the bottom of the protective plate 10. The isolation pad can be made of rubber. The isolation pad can be used to reduce the impact force when the protective plate 10 contacts the protective shell 4.

[0026] The above-mentioned telescopic rod 8 includes a fixed tube 16 fixedly connected to the pressure cap 7, a guide rod 20 is movably connected to the inner cavity of the fixed tube 16, and a spring 18 is movably sleeved on the outer ring of the guide rod 20, one end of the spring 18 is fixedly connected to the top of the guide rod 20, and the other end of the spring 18 is fixedly connected to the bottom end of the inner cavity of the fixed tube 16, and when the pressure cap 7 and the connecting column 12 are in a threaded connection state, the telescopic rod 8 is in a compressed state. Through the setting of the spring 18, the distance between the bottom of the fixed tube 16 and the top of the guide rod 20 can be changed, so that when the device is in use, under the action of the rebound force of the spring 18, the protective plate 10 can fit tightly with the top of the protective shell 4, so as to protect the part where the conductive wire is connected to the connecting column 12.

[0027] From the above description, it can be seen that the rotor terminal 14 is protected by the protective shell 4 and the buffer pad 17, and the rotor terminal 14 is connected to the conductive wire through the connecting column 12, which reduces the probability of the rotor terminal 14 being damaged, and the connecting column 12 can be quickly disassembled and assembled, which is convenient for the replacement of the connecting column 12.

[0028] A screw rod 5 is fixedly connected to one side of the protective shell 4, and an outer ring of the screw rod 5 is threadedly connected to an extrusion block 6. The other end of the extrusion block 6 is tightly fitted with the protrusion of the device body 1. By setting the extrusion block 6 and the screw rod 5, the position of the protective shell 4 can be fixed, so that the position of the rotor terminal 14 can remain unchanged, which is convenient for the use of the device. When the extrusion block 6 is rotated, the extrusion block 6 can be separated from the protrusion of the device body 1. At this time, the user can change the position of the rotor terminal 14. The outer surface of the extrusion block 6 is fixedly connected with a flexible material, such as rubber, to increase the friction between the extrusion block 6 and the device body 1.

[0029] In summary: when the zero-loss deep current limiting device is used, the device body 1 is connected to the conductive wire in the power system through the connecting column 12. After the conductive wire is connected to the connecting column 12, the user screws the pressure cap 7 and uses the pressure cap 7 to press the conductive wire to improve the stability of the connection between the conductive wire and the connecting column 12. During the screwing process of the pressure cap 7, the protective plate 10 is in a tightly fitted state with the protective shell 4 under the action of the telescopic rod 8, and the part where the conductive wire is connected to the connecting column 12 is shielded and protected by the structure formed by the protective plate 10 and the telescopic cloth 9. If it is necessary to change the position of the rotor terminal 14, the user screws the extrusion block 6 until the extrusion block 6 is separated from the protruding part of the device body 1. At this time, the slip ring rotor of the conductive slip ring 1 2 or the conductive slip ring 2 3 can be rotated, and the position of the rotor terminal 14 can be changed, which is convenient for wiring. After wiring, the extrusion block 6 is screwed so that the extrusion block 6 is tightly fitted with the protruding part of the device body 1 to fix the position of the rotor terminal 14.

[0030] The standard parts used in the utility model can be purchased from the market, and the special-shaped parts can be customized according to the description in the specification and the drawings. The specific connection methods of each part adopt the conventional means such as mature bolts, rivets, welding, etc. in the prior art. The machinery, parts and equipment all adopt the conventional models in the prior art and will not be described in detail here. The contents not described in detail in this specification belong to the prior art known to professional and technical personnel in this field. Although the embodiments of the utility model have been shown and described, it can be understood by ordinary technicians in this field that various changes, modifications, substitutions and modifications can be made to these embodiments without departing from the principle and spirit of the utility model. The scope of the utility model is defined by the attached claims and their equivalents.

Claims

1. A zero-loss deep current limiting device, comprising a device body (1) and a rotor terminal (14), characterized in that: The outer ring of the device body (1) is fixedly connected with a conductive slip ring 1 (2) and a conductive slip ring 2 (3); a stator terminal adapted to the slip ring stator of the conductive slip ring 1 (2) is electrically connected to the current input end of the device body (1); a stator terminal adapted to the slip ring stator of the conductive slip ring 2 (3) is electrically connected to the current output end of the device body (1); a rotor terminal (14) adapted to the slip ring rotor of the conductive slip ring 1 (2) is provided with a protective shell (4) on its outer surface; another rotor terminal (14) adapted to the slip ring rotor of the conductive slip ring 2 (3) is provided with another protective shell (4) on its outer surface; the protective shell (4) A screw rod (5) is fixedly connected to one side of the protective housing (4), the outer ring of the screw rod (5) is threadedly connected to an extrusion block (6), the other end of the extrusion block (6) is tightly fitted with a protruding portion of the device body (1), a groove (15) is provided at the top of the inner cavity of the protective housing (4), a connecting column (12) is provided in the inner cavity of the groove (15), the connecting column (12) is tightly fitted with a rotor terminal (14), the outer ring of the connecting column (12) is threadedly connected to a pressure cap (7), the outer side of the pressure cap (7) is connected to a protective plate (10) via a telescopic rod (8), and the protective plate (10) is connected to the pressure cap (7) via a telescopic cloth (9).

2. The zero-loss deep current limiting device according to claim 1, characterized in that: The outer ring of the bottom end of the connecting column (12) is fixedly connected with a connecting piece (13), the connecting piece (13) is adapted to the groove (15), and the connecting piece (13) is fixedly connected to the protective shell (4).

3. The zero-loss deep current limiting device according to claim 1, characterized in that: The telescopic rod (8) is located on the inner side of the telescopic cloth (9), and the telescopic rod (8) comprises a fixed tube (16) connected to the pressure cap (7), a guide rod (20) is movably connected to the inner cavity of the fixed tube (16), a spring (18) is movably sleeved on the outer ring of the guide rod (20), one end of the spring (18) is fixedly connected to the top of the guide rod (20), and the other end of the spring (18) is fixedly connected to the bottom end of the inner cavity of the fixed tube (16).

4. The zero-loss deep current limiting device according to claim 3 is characterized in that: The bottom of the pressure cap (7) is fixedly connected to a pressure ring (11), and the pressure ring (11) is located in the inner cavity of the protective plate (10). The outer ring of the pressure cap (7) is movably sleeved with a connecting ring (19), and the top of the fixed tube (16) and the top of the telescopic cloth (9) are both fixedly connected to the bottom of the connecting ring (19).

5. The zero-loss deep current limiting device according to claim 1, characterized in that: A buffer pad (17) is fixedly connected to the inner wall of the protective shell (4), the buffer pad (17) is in contact with the rotor terminal (14), and the protective shell (4) is fixedly connected to the first conductive slip ring (2) or the second conductive slip ring (3).

6. The zero-loss deep current limiting device according to claim 1, characterized in that: One side of the protective plate (10) is provided with an opening, and the bottom of the protective plate (10) is fixedly connected with an isolation pad.

Images