Current loop short-circuit wire with limiting function
By introducing gas rubber capsules and limit clamping plates into the current loop short circuit, combined with spring adjustment and fitting insertion plate, the problem of screw looseness and mismatch of socket size is solved, and the stability of current loop short circuit short circuit is achieved and safety to ensure the normal operation of the current transformer.
Patent Information
- Application Number
- CN202411463350.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2024-10-18
- Publication Date
- 2025-01-03
AI Technical Summary
The existing short circuit short circuit cannot be limited, resulting in loose screws and mismatch in socket sizes, which leads to open circuits of the current transformer and may cause equipment damage.
A current loop short circuit with limit is designed to increase friction by using gas rubber capsules and limit clamping plates. The gas rubber capsules are expanded through the sliding of push rods and connecting moving plates, which drives the fixing plates and limit clamping. The plate moves, adjusts the fitting of the screw, combines the spring to adjust the moving ring and the fitting insert to improve the tightness, and adapts to the socket size of different terminal strips.
Effectively prevent the screw from loosening, improve the stability and tightness of the short-connected wire, ensure the reliability and safety of the short-connected wire of the current loop, adapt to the socket sizes of different terminal strips, and avoid damage to the current transformer.
Smart Images
Figure CN119253349A_ABST
Abstract
Description
Technical Field
[0001] The invention relates to the technical field of current loop short-circuit wires, in particular to a current loop short-circuit wire with a limiter. Background Art
[0002] The current loop is a basic concept in electricity. It generally refers to the current path composed of power supply, switch, electrical appliances, etc. A single loop refers to a loop with one power supply for one load; a double loop refers to a loop with two power supplies for one load. Generally, enterprises with high requirements for power supply reliability or important regional substations use double-circuit power supply, which can protect one of the power supplies from power outages for some reason, and the other power supply can continue to supply power. However, for small and medium-sized users with low requirements for power supply reliability, single power supply is often used. Typical misoperations of the current loop include false open circuit, false short circuit, false grounding, and false addition of test quantity. If the current loop in operation is open, it will endanger personal and equipment safety. The maintenance personnel attach great importance to it, and the probability of false open circuit is extremely small. However, most of the false short circuit, false grounding, and false addition of test quantity occur during power outage maintenance work. The maintenance personnel have relatively low risk awareness, resulting in a high probability of false protection operation, such as the above three typical false operation events and related historical events. Therefore, the principle of malfunction of protection caused by false short circuit, false grounding and false addition of test quantity should be mainly analyzed. In daily substation work, protection device commissioning, acceptance, regular inspection, replacement of current transformer and withstand voltage test of primary equipment often require short-circuiting the current loop on the terminal block to prevent the current from being connected in series to the operating equipment.
[0003] When the current loop short-circuit wire is in use, the short-circuit wire cannot be limited, resulting in the screw and the stud easily falling off during connection. At the same time, when the current loop short-circuit wire is in use, the sockets of the terminal row are of different sizes, and the conventional short-circuit wire cannot be connected according to the sockets of the terminal row, making the inserted short-circuit wire easy to loosen during work and easy to fall off by accident, causing the current transformer to open circuit and fail to meet the short-circuit requirements. It is easy to burn the current transformer and primary equipment after the current loop is open. Summary of the invention
[0004] 1. Technical issues to be solved
[0005] In view of the deficiencies in the prior art, the present invention provides a current loop short-circuit with a limit, and utilizes a connecting plate to push a push rod backward so that the push rod can penetrate the stud cap and extend into the interior of the short-circuit connector, and the push rod can fit with the surface of the connecting movable plate, and utilizes the sliding of the connecting movable plate and the short-circuit connector so that when the push rod pushes the connecting movable plate, the connecting movable plate can squeeze the gas rubber bag so that the gas in the gas rubber bag can be concentrated at the rear of the gas rubber bag, and through the squeezing of the gas rubber bag, the rear of the gas rubber bag can expand and drive the fixed plate and the limit clamping plate to move, so that the limit clamping plate can drive the anti-slip strip to engage with the threaded surface of the screw rod to increase the friction between the threaded rod and the limit clamping plate, so that the limit clamping plate can limit and clamp the screw rod to prevent the screw rod from loosening during use, and the elasticity of the spring enables the second size adjustment moving ring to move on one side of the short-circuit connector, and when the second size adjustment moving ring moves to one side, the second size adjustment moving ring The movable ring can drive the push plate to move together, and the sliding of the push plate and the fixed plate can be used to make the fixed plate slide inside the push plate when the push plate moves. When the distance between the second size adjustment movable ring and the short-circuit connector is adjusted, the first fixed embedded plug-in plate can be embedded into the interior of the fixed plate, and the movement of the movable plate and the first fixed embedded plug-in plate can be used to adjust the orientation of the second fixed embedded plug-in plate, so that the second fixed embedded plug-in plate can be embedded into the interior of the push plate, and the first fixed embedded plug-in plate and the second fixed embedded plug-in plate can be used to fix the push plate and the fixed plate. When the first fixed embedded plug-in plate is embedded into the interior of the fixed plate, the friction between the first fixed embedded plug-in plate and the fixed plate can be increased by using the rubber pad, thereby improving the tightness between the push plate and the fixed plate, so that the device can adjust the connection size of the short-circuit connector according to the size of the terminal row socket, etc., which solves the problem that the screw connection is inconvenient to limit and the short-circuit cannot be adjusted according to the size of the terminal row socket.
[0006] (II) Technical solution
[0007] In order to solve the above technical problems, the present invention provides the following technical solutions: comprising a short-circuit connector, a stud is fixedly connected to the rear surface of the short-circuit connector, an insulating sleeve is sleeved on the side surface of the short-circuit connector, a wire seat is arranged on the side surface of the insulating sleeve, and a copper wire is arranged on the side surface of the wire seat;
[0008] The short-circuit connector is internally slidably connected with a connecting movable plate, a gas rubber bag is provided on the rear surface of the connecting movable plate, a mounting plate is provided on the rear surface of the gas rubber bag, a limited clamping plate is provided on the side surface of the gas rubber bag, the short-circuit connector is internally threadedly connected with a screw rod, an end of the screw rod away from the short-circuit connector is fixedly connected with a stud cap, a push rod is internally slidably connected with the stud cap, an end of the push rod away from the short-circuit connector is fixedly connected with a connecting plate, the connecting plate is internally threadedly connected with a threaded rod, and the threaded rod is threadedly connected to the stud cap.
[0009] Preferably, a fixing ring is sleeved on the side surface of the short-circuit connector, a thickening plate is fixedly connected to the side surface of the fixing ring, and a first size-adjusting movable ring is fixedly connected to the side surface of the thickening plate.
[0010] Preferably, a spring is fixedly connected to the side surface of the fixing ring, and a second size-adjusting movable ring is fixedly connected to one end of the spring away from the short-circuit connector.
[0011] Preferably, a push plate is fixedly connected to the front surface of the second size adjustment movable ring, a fixed plate is fixedly connected to the side surface of the insulating sleeve, and the fixed plate is slidably connected to the push plate.
[0012] Preferably, a first fixed embedded plug plate is embedded in the front surface of the fixed plate, and a rubber pad is provided on the side surface of the first fixed embedded plug plate.
[0013] Preferably, the side surface of the first fixed interlocking plug plate is movably connected to a movable plate via a bearing, the side surface of the movable plate is fixedly connected to a second fixed interlocking plug plate, and the second fixed interlocking plug plate is interlockingly connected to the connecting movable plate.
[0014] Preferably, one end of the threaded rod away from the stud cap is fixedly connected to a rotating plate, and the front surface of the rotating plate is fixedly connected to a friction tube.
[0015] Preferably, an interlocking rod is slidably connected inside the friction tube, and the interlocking rod is interlockingly connected with the stud cap, and one end of the interlocking rod away from the stud cap is fixedly connected with a cover cap.
[0016] Preferably, an anti-slip strip is provided on the inner wall of the position limiting clamping plate, and the anti-slip strip is in contact with the threaded rod.
[0017] Preferably, an opening is provided on the upper surface of the stud, the threaded rod is threadedly connected to the stud, and the diameter of the insulating sleeve is the same as the diameter of the first size adjustment movable ring and the second size adjustment movable ring.
[0018] Compared with the prior art, the present invention provides a current loop short-circuit wire with a limiter, which has the following beneficial effects:
[0019] 1. The present invention utilizes a connecting plate to push the push rod backward, so that the push rod can penetrate the stud cap and extend into the interior of the short-circuit connector, and the push rod can fit with the surface of the connecting movable plate. By utilizing the sliding of the connecting movable plate and the short-circuit connector, when the push rod pushes the connecting movable plate, the connecting movable plate can squeeze the gas rubber bag, so that the gas in the gas rubber bag can be concentrated at the rear of the gas rubber bag. Through the squeezing of the gas rubber bag, the rear of the gas rubber bag can expand and drive the fixed plate and the limit clamping plate to move, so that the limit clamping plate can drive the anti-slip strip to engage with the thread on the surface of the screw rod to increase the friction between the threaded rod and the limit clamping plate, so that the limit clamping plate can limit and clamp the screw rod to prevent the screw rod from loosening during use.
[0020] When the second size adjustment moving ring moves to one side, the second size adjustment moving ring can drive the push plate to move together, and the sliding of the push plate and the fixed plate can make the fixed plate slide inside the push plate when the push plate moves. When the distance between the second size adjustment moving ring and the short wiring connector is adjusted, the first fixed interlocking plug-in plate can be inserted into the fixed plate, and the movement of the movable plate and the first fixed interlocking plug-in plate can be used to adjust the orientation of the second fixed interlocking plug-in plate, so that the second fixed interlocking plug-in plate can be inserted into the push plate, and the push plate and the fixed plate can be fixed by the first fixed interlocking plug-in plate and the second fixed interlocking plug-in plate. When the first fixed interlocking plug-in plate is inserted into the fixed plate, the friction between the first fixed interlocking plug-in plate and the fixed plate can be increased by the rubber pad, thereby increasing the tightness between the push plate and the fixed plate, so that the device can adjust the connection size of the short wiring connector according to the size of the socket of the terminal row. BRIEF DESCRIPTION OF THE DRAWINGS
[0021] Figure 1 It is a schematic diagram of the overall structure of the present invention;
[0022] Figure 2 It is a schematic diagram of the structure of the fixing ring of the present invention;
[0023] Figure 3 for Figure 2 Schematic diagram of the structure at A in the middle;
[0024] Figure 4 This is a schematic diagram of the split structure of the short-circuit connector of the present invention;
[0025] Figure 5 for Figure 4 Schematic diagram of the structure at B in the middle;
[0026] Figure 6 This is a schematic diagram of the internal structure of the short-circuit connector of the present invention;
[0027] Figure 7It is a schematic diagram of the side structure of the limit clamping plate of the present invention.
[0028] Among them: 1. short-circuit connector; 2. insulating sleeve; 3. second size adjustment moving ring; 4. stud; 5. stud cap; 6. wire holder; 7. copper wire; 8. fixed ring; 9. spring; 10. push plate; 11. thickened plate; 12. first size adjustment moving ring; 13. fixed plate; 14. second fixed interlocking plug-in plate; 15. movable plate; 16. first fixed interlocking plug-in plate; 17. rubber pad; 18. screw; 19. push rod; 20. rotating plate; 21. anti-slip strip; 22. connecting plate; 23. interlocking rod; 24. cap; 25. friction tube; 26. mounting plate; 27. gas rubber bag; 28. limit clamping plate; 29. connecting moving plate; 30. threaded rod. DETAILED DESCRIPTION
[0029] 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 described embodiments 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 creative work are within the scope of protection of the present invention.
[0030] See also Figure 1-7, including a short-circuit connector 1, a stud 4 is fixedly connected to the rear surface of the short-circuit connector 1, an insulating sleeve 2 is sleeved on the side surface of the short-circuit connector 1, a wire seat 6 is arranged on the side surface of the insulating sleeve 2, a copper wire 7 is arranged on the side surface of the wire seat 6, a connecting movable plate 29 is slidably connected inside the short-circuit connector 1, a gas rubber bag 27 is arranged on the rear surface of the connecting movable plate 29, a mounting plate 26 is arranged on the rear surface of the gas rubber bag 27, a limited position clamping plate 28 is arranged on the side surface of the gas rubber bag 27, a screw 18 is threadedly connected inside the short-circuit connector 1, a stud cap 5 is fixedly connected to one end of the screw 18 away from the short-circuit connector 1, and a push rod is slidably connected inside the stud cap 5 19, the end of the push rod 19 away from the short wiring connector 1 is fixedly connected with a connecting plate 22, the internal thread of the connecting plate 22 is connected with a threaded rod 30, and the threaded rod 30 is threadedly connected with the stud cap 5, the end of the threaded rod 30 away from the stud cap 5 is fixedly connected with a rotating plate 20, the front surface of the rotating plate 20 is fixedly connected with a friction tube 25, the interior of the friction tube 25 is slidably connected with a fitting rod 23, and the fitting rod 23 is fitted with the stud cap 5, and the end of the fitting rod 23 away from the stud cap 5 is fixedly connected with a cap 24, the inner wall of the limit clamping plate 28 is provided with an anti-slip strip 21, and the anti-slip strip 21 is fitted with the screw 18, the screw 18 is screwed into the interior of the stud 4, so that the opening of the stud 4 is protected The threaded rod 30 is twisted to expand outward. When the threaded rod 30 is tightened inside the stud 4, the stud cap 5 can fit with the surface of the short-circuit connector 1. The connecting plate 22 can be used to push the push rod 19 backward, so that the push rod 19 can pass through the stud cap 5 and extend into the interior of the short-circuit connector 1. The push rod 19 can fit with the surface of the connecting movable plate 29. The connecting movable plate 29 and the short-circuit connector 1 can slide, so that when the push rod 19 pushes the connecting movable plate 29, the connecting movable plate 29 can squeeze the gas rubber bag 27, so that the gas in the gas rubber bag 27 can be concentrated at the rear of the gas rubber bag 27. Through the squeezing of the gas rubber bag 27, the rear of the gas rubber bag 27 is The expansion can occur to drive the fixing plate 13 and the limiting clamping plate 28 to move, so that the limiting clamping plate 28 can drive the anti-slip strip 21 to engage with the thread on the surface of the screw 18 to increase the friction between the threaded rod 30 and the limiting clamping plate 28. When the limiting clamping plate 28 is limiting the screw 18, the rotating plate 20 is rotated so that it can drive the threaded rod 30 to penetrate the interior of the connecting plate 22 and extend into the interior of the short-circuit connector 1 to fix the connecting plate 22 and the push rod 19. The rotating plate 20 is placed longitudinally so that the cap 24 can drive the engaging rod 23 to penetrate the friction tube 25 and extend into the interior of the stud cap 5 to fix the cap 24, making it convenient to disassemble and assemble the cap 24 and push the push rod 19 to move.
[0031] The side surface of the short-circuit connector 1 is sleeved with a fixing ring 8, the side surface of the fixing ring 8 is fixedly connected with a thickened plate 11, the side surface of the thickened plate 11 is fixedly connected with a first size adjustment movable ring 12, the side surface of the fixing ring 8 is fixedly connected with a spring 9, the end of the spring 9 away from the short-circuit connector 1 is fixedly connected with a second size adjustment movable ring 3, the front surface of the second size adjustment movable ring 3 is fixedly connected with a push plate 10, the side surface of the insulating sleeve 2 is fixedly connected with a fixing plate 13, and the fixing plate 13 is slidably connected to the push plate 10, the front surface of the fixing plate 13 is embedded with a first fixed embedded plug plate 16, the first fixed The side surface of the interlocking plug plate 16 is provided with a rubber pad 17, the side surface of the first fixed interlocking plug plate 16 is movably connected with the movable plate 15 through a bearing, the side surface of the movable plate 15 is fixedly connected with the second fixed interlocking plug plate 14, and the second fixed interlocking plug plate 14 is interlocked with the push plate 10, the upper surface of the stud 4 is provided with an opening, the screw 18 is threadedly connected with the stud 4, the diameter of the insulating sleeve 2 is the same as the diameter of the first size adjustment moving ring 12 and the second size adjustment moving ring 3, because the first size adjustment moving ring 12 is fixedly installed on the surface of the short wiring connector 1, and the second size adjustment moving ring 3 is elastically adjusted. The spring 9 is connected to the short-circuit connector 1. The elasticity of the spring 9 allows the second size adjustment movable ring 3 to move on one side of the short-circuit connector 1. When the second size adjustment movable ring 3 moves to one side, the second size adjustment movable ring 3 can drive the push plate 10 to move together. The push plate 10 and the fixed plate 13 are used to slide inside the push plate 10 when the push plate 10 moves. When the distance between the second size adjustment movable ring 3 and the short-circuit connector 1 is adjusted, the first fixed interlocking plug plate 16 can be interlocked into the inside of the fixed plate 13. The movable plate 15 and the first fixed interlocking plug plate 16 are used to adjust the distance between the second size adjustment movable ring 3 and the short-circuit connector 1. The activity of can adjust the orientation of the second fixed fitting plug plate 14, so that the second fixed fitting plug plate 14 can be fitted into the inside of the push plate 10, and the push plate 10 and the fixed plate 13 can be fixed by the first fixed fitting plug plate 16 and the second fixed fitting plug plate 14. When the first fixed fitting plug plate 16 is fitted into the inside of the fixed plate 13, the friction between the first fixed fitting plug plate 16 and the fixed plate 13 can be increased by the rubber pad 17, thereby improving the tightness between the push plate 10 and the fixed plate 13, so that the device can adjust the connection size of the short-circuit connector 1 according to the socket size of the terminal row.
[0032] When in use, the screw rod 18 is screwed into the inside of the stud 4, and the connecting plate 22 is used to push the push rod 19 backward, so that the push rod 19 can penetrate the stud cap 5 and extend into the inside of the short-circuit connector 1. The push rod 19 can fit with the surface of the connecting movable plate 29. By sliding the connecting movable plate 29 and the short-circuit connector 1, when the push rod 19 pushes the connecting movable plate 29, the connecting movable plate 29 can squeeze the gas rubber bag 27, so that the gas in the gas rubber bag 27 can be concentrated at the rear of the gas rubber bag 27, and the gas rubber bag 27 can be discharged through the gas rubber bag. The extrusion of 27 causes the rear of the gas rubber bag 27 to expand and drive the fixing plate 13 and the limiting clamping plate 28 to move, so that the limiting clamping plate 28 can drive the anti-slip strip 21 to engage with the thread on the surface of the screw rod 18 to increase the friction between the threaded rod 30 and the limiting clamping plate 28. When the limiting clamping plate 28 limits the screw rod 18, the rotating plate 20 is rotated so that it can drive the threaded rod 30 to penetrate the interior of the connecting plate 22 and extend into the interior of the short-circuit connector 1 to fix the connecting plate 22 and the push rod 19. The rotating plate 20 is placed longitudinally so that the cap 2 4 can drive the engaging rod 23 to extend through the friction tube 25 into the interior of the stud cap 5 to fix the cover cap 24. The elasticity of the spring 9 allows the second size adjustment movable ring 3 to move on one side of the short-circuit connector 1. When the second size adjustment movable ring 3 moves to one side, the second size adjustment movable ring 3 can drive the push plate 10 to move together. By sliding the push plate 10 and the fixed plate 13, the fixed plate 13 can slide inside the push plate 10 when the push plate 10 moves. When the distance between the second size adjustment movable ring 3 and the short-circuit connector 1 is adjusted, After completion, the first fixed interlocking plug plate 16 can be interlocked into the interior of the fixed plate 13, and the movable plate 15 and the first fixed interlocking plug plate 16 can be used to adjust the orientation of the second fixed interlocking plug plate 14, so that the second fixed interlocking plug plate 14 can be interlocked into the interior of the push plate 10, and the first fixed interlocking plug plate 16 and the second fixed interlocking plug plate 14 can be used to fix the push plate 10 and the fixed plate 13, so that the device can adjust the connection size of the short-circuit connector 1 according to the socket size of the terminal row, thereby facilitating the current loop short-circuiting.
[0033] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.
Claims
1. A current loop short-circuit with a limit switch, comprising a short-circuit connector (1), characterized in that: A stud (4) is fixedly connected to the rear surface of the short-circuit connector (1), an insulating sleeve (2) is sleeved on the side surface of the short-circuit connector (1), a wire holder (6) is arranged on the side surface of the insulating sleeve (2), and a copper wire (7) is arranged on the side surface of the wire holder (6); The short-circuit connector (1) is internally slidably connected to a connecting movable plate (29), a gas rubber bag (27) is provided on the rear surface of the connecting movable plate (29), a mounting plate (26) is provided on the rear surface of the gas rubber bag (27), and a limited clamping plate (28) is provided on the side surface of the gas rubber bag (27). The short-circuit connector (1) is internally threadedly connected to a screw rod (18), an end of the screw rod (18) away from the short-circuit connector (1) is fixedly connected to a stud cap (5), the stud cap (5) is internally slidably connected to a push rod (19), an end of the push rod (19) away from the short-circuit connector (1) is fixedly connected to a connecting plate (22), the connecting plate (22) is internally threadedly connected to a threaded rod (30), and the threaded rod (30) is threadedly connected to the stud cap (5).
2. The current loop short-circuit wire with limit according to claim 1, characterized in that: The side surface of the short-circuit connector (1) is sleeved with a fixing ring (8), the side surface of the fixing ring (8) is fixedly connected to a thickening plate (11), and the side surface of the thickening plate (11) is fixedly connected to a first size-adjusting movable ring (12).
3. The current loop short-circuit wire with limit according to claim 2, characterized in that: A spring (9) is fixedly connected to the side surface of the fixed ring (8), and one end of the spring (9) away from the short-circuit connector (1) is fixedly connected to a second size-adjusting movable ring (3).
4. The current loop short-circuit wire with limit according to claim 3, characterized in that: The front surface of the second size adjustment movable ring (3) is fixedly connected to a push plate (10), the side surface of the insulating sleeve (2) is fixedly connected to a fixing plate (13), and the fixing plate (13) is slidably connected to the push plate (10).
5. The current loop short-circuit wire with limit according to claim 4, characterized in that: The front surface of the fixed plate (13) is connected with a first fixed embedded plug plate (16), and the side surface of the first fixed embedded plug plate (16) is provided with a rubber pad (17).
6. The current loop short-circuit wire with limit according to claim 5, characterized in that: The side surface of the first fixed embedded plug plate (16) is movably connected to a movable plate (15) via a bearing, the side surface of the movable plate (15) is fixedly connected to a second fixed embedded plug plate (14), and the second fixed embedded plug plate (14) is embeddedly connected to the push plate (10).
7. The current loop short-circuit wire with limit according to claim 1, characterized in that: One end of the threaded rod (30) away from the stud cap (5) is fixedly connected to a rotating plate (20), and a friction tube (25) is fixedly connected to the front surface of the rotating plate (20).
8. The current loop short-circuit wire with limit according to claim 7, characterized in that: The friction tube (25) is slidably connected with an engaging rod (23) inside, and the engaging rod (23) is engaged with the stud cap (5), and one end of the engaging rod (23) away from the stud cap (5) is fixedly connected with a cover cap (24).
9. The current loop short-circuit wire with limit according to claim 1, characterized in that: The inner wall of the position limiting clamping plate (28) is provided with an anti-slip strip (21), and the anti-slip strip (21) is in contact with the screw rod (18).
10. The current loop short-circuit wire with limit according to claim 1, characterized in that: The upper surface of the stud (4) is provided with an opening, the screw rod (18) is threadedly connected to the stud (4), and the diameter of the insulating sleeve (2) is the same as the diameter of the first size adjustment movable ring (12) and the second size adjustment movable ring (3).