A GIS circuit breaker

Abstract

The invention discloses a GIS circuit breaker, comprising a supporting base, a circuit breaker control structure is installed on the upper end of the supporting base, the circuit breaker control structure comprises a butt-joint pipe body, a circuit breaker control component is installed in the circuit breaker control structure; the circuit breaker control component comprises a butt-joint conductive seat and a conductive connecting rod, the butt-joint conductive seat and the conductive connecting rod are respectively fixed at two ends inside the butt-joint pipe body, the butt-joint conductive rod is slidably connected to the internal through hole of the butt-joint conductive seat, a matching adjustment frame is fixed to one side of the butt-joint conductive rod, one end of a telescopic control guide column is fixed to one end of the butt-joint conductive rod, and the other end of the telescopic control guide column is slidably connected to the conductive connecting rod; a first rack is connected to the matching adjustment frame, the first rack is connected to a transmission mechanism, the transmission mechanism comprises a first gear, a butt-joint rotating shaft and a second gear, the first rack is meshed with the first gear, the second gear is meshed with the second rack, and the second rack is fixedly connected to the telescopic end of the lifting and telescopic device. The invention realizes the control circuit connection in a small space.

Description

Technical Field

[0001] The present invention relates to the technical field of circuit breakers, and in particular to a GIS circuit breaker. Background Art

[0002] GIS is a gas-insulated switchgear that optimizes the combination of substation equipment. Circuit control is achieved through circuit breakers in GIS.

[0003] The Chinese patent number CN108493036B discloses a "C-GIS high-voltage AC circuit breaker", which includes a C-GIS sealed box, a static conductive end, a dynamic conductive end, a dynamic conductive end stretching assembly and a circuit breaker operating mechanism frame. The circuit breaker operating mechanism frame is provided with a dynamic conductive end transmission assembly, and the dynamic conductive end transmission assembly includes a crank arm A, a connecting rod A, a main roller, a trip spring, a closing drive assembly and a trip drive assembly. After receiving a closing signal, the closing drive assembly can drive the main roller to rotate, and drive the dynamic conductive end stretching assembly and the dynamic conductive end to move toward the static conductive end through the connecting rod A and the crank arm A to close the switch. After receiving the trip signal, the trip drive assembly drives the main roller to rotate in the opposite direction, and drives the dynamic conductive end stretching assembly and the dynamic conductive end to move away from the static conductive end through the connecting rod A and the crank arm A to open the switch. The operating mechanism of the C-GIS high-voltage AC circuit breaker executes the closing and opening instructions issued by the logic unit to work respectively, and not only has a compact overall structure, but also has high reliability, maintenance-free, and long mechanical life.

[0004] However, the existing circuit breakers transmit power through connecting rods to achieve the purpose of circuit connection, which has the disadvantage of complex production process. In addition, due to the internal space problem of the circuit breaker, the movement of the connecting rod may be hindered over time, which is prone to mechanical failure.

[0005] Therefore, there is an urgent need in the art for a GIS circuit breaker to solve the above problems. Summary of the invention

[0006] The object of the present invention is to provide a GIS circuit breaker to solve the problems existing in the above-mentioned prior art, which has a simple structure, can control the on and off of the circuit in a small space, and is not prone to failure problems.

[0007] To achieve the above object, the present invention provides the following solutions:

[0008] The present invention discloses a GIS circuit breaker, comprising a support base, a circuit breaker control structure is installed on the upper end of the support base, the circuit breaker control structure comprises a butt-joint pipe body, both ends of the butt-joint pipe body are connected with a butt-joint connecting plate, the butt-joint connecting plate is connected with a gas supply device, the gas supply device supplies gas into the butt-joint pipe body through the butt-joint connecting plate, and a circuit breaker control component is installed in the circuit breaker control structure;

[0009] The circuit breaker control component includes a docking conductive seat, a matching adjustment frame, a docking conductive rod, a first rack, a second rack, a lifting and telescopic device, a conductive connecting rod and a telescopic control guide column. The docking conductive seat and the conductive connecting rod are respectively fixed to the two ends of the interior of the docking pipe body, the docking conductive rod is slidably connected to the internal through hole of the docking conductive seat, the matching adjustment frame is fixed to a side of the docking conductive rod away from the docking conductive seat, one end of the telescopic control guide column is fixed to an end of the docking conductive rod away from the docking conductive seat, and the other end of the telescopic control guide column is slidably connected to the conductive connecting rod;

[0010] The mating adjustment frame is connected to a first rack, the first rack is connected to a transmission mechanism, the transmission mechanism includes a first gear, a docking rotating shaft and a second gear, the first gear and the second gear are respectively fixed to the two ends of the docking rotating shaft, the first rack is meshed with the first gear, the second gear is meshed with the second rack, and the second rack is fixedly connected to the telescopic end of the lifting and telescopic device.

[0011] Preferably, the circuit breaker control structure further comprises a sleeve, the sleeve is vertically arranged with respect to the butt joint pipe body, the upper end of the sleeve is welded and fixed to the butt joint pipe body, and the lifting and telescopic device is installed in the sleeve.

[0012] Preferably, the lifting and telescopic device is a hydraulic cylinder, and the piston rod of the hydraulic cylinder is fixedly connected to the second rack.

[0013] Preferably, the support base includes a control base and a reinforcement base, the reinforcement base is fixed to the upper end of the control base, and the circuit breaker control structure is installed on the upper end of the reinforcement base.

[0014] Preferably, the air supply device includes a docking duct, which is installed at the upper end of the docking tube body, and both ends of the docking duct are respectively connected to the air guide channels of the two docking connecting plates, and the docking duct is provided with a plurality of one-way connecting valves.

[0015] Preferably, a pressure gauge is provided on the docking conduit.

[0016] Preferably, a docking flange is installed on a surface of the docking connecting plate away from the docking pipe body.

[0017] Preferably, a limiting fixing block is provided in the butt joint pipe body, and the butt joint rotating shaft is rotatably connected to the limiting fixing block.

[0018] Preferably, the butt joint pipe body is formed by welding a first butt joint pipe and a second butt joint pipe.

[0019] Preferably, a fitting frame is provided on one side of the second rack, and the fitting frame is in contact with a side surface of the second gear.

[0020] Compared with the prior art, the present invention has achieved the following technical effects:

[0021] When the lifting and telescopic device of the present invention is extended, it can drive the second rack to move upward, so that it meshes with the second gear and drives it to rotate. When the second gear rotates, the first gear is driven to rotate by the docking rotating shaft, and the first gear and the first rack are meshed and connected, thereby pushing the first rack to perform horizontal linear motion. Therefore, by changing the position of the docking conductive rod, the docking conductive rod and the docking conductive seat are docked and fixed, otherwise the docking conductive rod and the docking conductive seat are disconnected. During docking, the current is transmitted to the telescopic control guide column through the docking conductive seat and the docking conductive rod, and then guided to the power unit through the conductive connecting rod. Therefore, through the structural setting of the transmission mechanism, the first rack and the second rack, the traditional connecting rod structure is changed to achieve the purpose of circuit connection. In the case where the internal space of the circuit breaker is narrow, the circuit connection can also be controlled by the gear and rack structure, and mechanical failure is not easy to occur. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0023] Figure 1 It is a structural schematic diagram of a GIS circuit breaker from a first perspective according to an embodiment of the present invention;

[0024] Figure 2 It is a structural schematic diagram of a GIS circuit breaker from a second viewing angle according to an embodiment of the present invention;

[0025] Figure 3 It is a structural schematic diagram of a circuit breaker control structure in a GIS circuit breaker according to an embodiment of the present invention;

[0026] Figure 4 This is a disassembled diagram of the circuit breaker control structure in the GIS circuit breaker according to an embodiment of the present invention;

[0027] Figure 5 This is a schematic diagram of the structure of the circuit breaker control component in the GIS circuit breaker according to an embodiment of the present invention;

[0028] Figure 6 It is a structural schematic diagram of the transmission mechanism in the GIS circuit breaker according to an embodiment of the present invention;

[0029] In the figure: 1-pressure gauge; 2-one-way connecting valve; 3-docking conduit; 4-docking flange; 5-docking connecting plate; 6-control seat; 7-reinforcement seat; 8-circuit breaker control structure; 9-first docking tube; 10-casing; 11-second docking tube; 12-circuit breaker control component; 13-matching adjustment frame; 14-docking conductive rod; 15-first rack; 16-docking conductive seat; 17-transmission mechanism; 18-hydraulic cylinder; 19-piston rod; 20-second rack; 21-fitting frame; 22-conductive connecting rod; 23-telescopic control guide column; 24-first gear; 25-limiting fixed block; 26-docking rotating shaft; 27-second gear. DETAILED DESCRIPTION

[0030] 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.

[0031] The object of the present invention is to provide a GIS circuit breaker to solve the problems existing in the above-mentioned prior art, which has a simple structure, can control the on and off of the circuit in a small space, and is not prone to failure problems.

[0032] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the present invention is further described in detail below with reference to the accompanying drawings and specific embodiments.

[0033] like Figure 1-Figure 6 As shown, this embodiment provides a GIS circuit breaker, including a support base, and a circuit breaker control structure 8 is installed on the upper end of the support base, and the support base plays the role of supporting the circuit breaker control structure 8 above it. The circuit breaker control structure 8 includes a butt-joint pipe body, and the butt-joint pipe body is a circular tube structure. The two ends of the butt-joint pipe body are connected with a butt-joint connecting plate 5, and the butt-joint connecting plate 5 is a disc structure. The butt-joint connecting plate 5 is connected with a gas supply device, and a gas guide channel is provided in the butt-joint connecting plate 5. The two ends of the gas guide channel are respectively connected with the gas supply device and the inside of the butt-joint pipe body. The gas supply device supplies gas to the butt-joint pipe body through the gas guide channel in the butt-joint connecting plate 5, specifically, SF6 gas is introduced, so as to reduce the occurrence of electric arcs, perform internal protection, and prevent internal combustion. A circuit breaker control component 12 is installed in the circuit breaker control structure 8, and the circuit breaker control component 12 is the main control component for controlling the on and off of the GIS circuit breaker.

[0034] The specific structure of the circuit breaker control component 12 is as follows Figure 5As shown, the circuit breaker control component 12 includes a docking conductive seat 16, a matching adjustment frame 13, a docking conductive rod 14, a first rack 15, a second rack 20, a lifting and telescopic device, a conductive connecting rod 22 and a telescopic control guide column 23. The docking conductive seat 16 and the conductive connecting rod 22 are respectively fixed to the left and right ends of the interior of the docking pipe body, the docking conductive rod 14 is slidably connected to the internal through hole of the docking conductive seat 16, the matching adjustment frame 13 is fixed to the side of the docking conductive rod 14 away from the docking conductive seat 16 (i.e., the right side in the figure), one end of the telescopic control guide column 23 is fixed to the end of the docking conductive rod 14 away from the docking conductive seat 16, and the telescopic control guide column 23 also passes through the matching adjustment frame 13, and the other end of the telescopic control guide column 23 is slidably connected to the conductive connecting rod 22.

[0035] The first rack 15 is connected to the matching adjustment frame 13, and the first rack 15 is connected to a transmission mechanism 17. The specific structure of the transmission mechanism 17 is as follows: Figure 6 As shown, the transmission mechanism 17 includes a first gear 24, a docking rotating shaft 26, and a second gear 27. The first gear 24 and the second gear 27 are respectively fixed to the two ends of the docking rotating shaft 26, and the first gear 24, the docking rotating shaft 26 and the second gear 27 can rotate synchronously. In addition, the first rack 15 is meshed with the first gear 24, the second gear 27 is meshed with the second rack 20, and the second rack 20 is fixedly connected to the telescopic end of the lifting and telescopic device, and the telescopic end of the lifting and telescopic device can drive the second rack 20 to move up and down.

[0036] In actual use, by controlling the extension of the lifting and telescopic device, the second rack 20 can be driven to move upward, mesh with the second gear 27 and drive it to rotate. When the second gear 27 rotates, the first gear 24 is driven to rotate by the docking rotating shaft 26. The first gear 24 is meshed and connected with the first rack 15, thereby pushing the first rack 15 to move laterally to the left. Thus, by changing the position of the docking conductive rod 14, the docking conductive rod 14 is docked and fixed with the docking conductive seat 16. During docking, the current is conducted to the telescopic control guide column 23 through the docking conductive seat 16 and the docking conductive rod 14, and then guided to the power unit through the conductive connecting rod 22. Conversely, when the lifting and telescopic device is controlled to shorten, the docking conductive rod 14 is disconnected from the docking conductive seat 16.

[0037] In this embodiment, the circuit breaker control structure 8 further includes a sleeve 10, which is vertically arranged with the butt-joint pipe body, the upper end of the sleeve 10 is welded and fixed with the butt-joint pipe body, and the interior of the sleeve 10 is connected with the interior of the butt-joint pipe body, and the introduced SF6 gas will also enter the interior of the sleeve 10. The purpose of setting the sleeve 10 structure is to install the lifting and telescopic device in the sleeve 10, which can not only provide certain support for the lifting and telescopic device, but also protect it from being directly exposed to the outside world.

[0038] In this embodiment, the lifting and telescopic device is an existing hydraulic cylinder 18, and the end of the piston rod 19 of the hydraulic cylinder 18 can be fixedly connected to the second rack 20. In actual use, the piston rod 19 of the hydraulic cylinder 18 can move up and down, thereby driving the second rack 20 to move up and down.

[0039] In this embodiment, the support base includes a control seat 6 and a reinforcement seat 7, the reinforcement seat 7 is fixed to the upper end of the control seat 6, and the sleeve 10 in the circuit breaker control structure 8 is installed on the upper end of the reinforcement seat 7. Among them, the control seat 6 is a hollow box structure, and its interior is used to prevent the hydraulic system that drives the hydraulic cylinder 18 from running. The hydraulic system includes an oil tank, an oil pump and a two-position four-way solenoid valve. The hydraulic oil in the oil tank is transported to the oil inlet of the two-position four-way solenoid valve through the oil pump. The two-position four-way solenoid valve then transports hydraulic oil to one of the two oil ports of the hydraulic cylinder 18 as needed, and the hydraulic oil discharged from the other oil port will flow to the two-position four-way solenoid valve, and flow back to the oil tank again through the oil outlet of the two-position four-way solenoid valve. These are all conventional settings in the field of hydraulic systems. Those skilled in the art can also make modifications to this technology, such as setting valves on the pipeline and other conventional settings. This connection relationship is not unique and is not the focus of the present invention, so it will not be further described here. The reinforcement seat 7 is a truncated cone structure with a pipe passage at its center to facilitate the passage of pipes in the hydraulic system. It should be noted that a sealing ring or other sealing measures can be added between the pipe and the reinforcement seat 7 to prevent gas from flowing out.

[0040] In this embodiment, the gas supply device includes a docking conduit 3, which is installed at the upper end of the docking pipe body. Specifically, the two ends of the docking conduit 3 are respectively plugged and connected with the gas guide channels of the two docking connecting plates 5. The docking conduit 3 is provided with a plurality of one-way connecting valves 2, specifically two, which are symmetrically arranged on both sides of the docking conduit 3, and the external gas source delivers gas to the docking conduit 3 through the air pipe and the one-way connecting valve 2.

[0041] In this embodiment, a pressure gauge 1 is provided on the docking conduit 3 for measuring the air pressure in the docking conduit 3 .

[0042] In this embodiment, a docking flange 4 is installed on a surface of each docking connecting plate 5 away from the docking pipe body, and the docking flange 4 is used to facilitate connection with external electrical equipment to achieve the purpose of power supply.

[0043] In this embodiment, a limiting fixing block 25 is disposed in the butt joint pipe body, a rotation through hole is disposed on the limiting fixing block 25 , and a butt joint rotating shaft 26 is rotationally connected to the rotation through hole of the limiting fixing block 25 .

[0044] In this embodiment, the butt joint body is welded by the first butt joint tube 9 and the second butt joint tube 11. The first butt joint tube 9 and the second butt joint tube 11 are half-tube structures, which can be understood as two parts obtained by cutting a round tube along its diameter. After the first butt joint tube 9 and the second butt joint tube 11 are welded, the front of the upper end of the sleeve 10 is welded to the first butt joint tube 9, and the rear of the upper end of the sleeve 10 is welded to the second butt joint tube 11.

[0045] In this embodiment, a laminating frame 21 is provided on one side of the second rack 20, and the laminating frame 21 contacts one side of the second gear 27. The laminating frame 21 can move up and down with the second rack 20, and can be attached to one side of the second gear 27 during the up and down movement, thereby ensuring the alignment of the second rack 20 and the second gear 27, and preventing the second rack 20 and the second gear 27 from misalignment.

[0046] The present invention uses specific examples to illustrate the principles and implementation methods of the present invention. The above examples are only used to help understand the method and core ideas of the present invention. At the same time, for those skilled in the art, according to the ideas of the present invention, there will be changes in the specific implementation methods and application scope. In summary, the content of this specification should not be understood as limiting the present invention.

Claims

1. A GIS circuit breaker, characterized in that: It comprises a support base, a circuit breaker control structure (8) is installed on the upper end of the support base, the circuit breaker control structure (8) comprises a butt-joint pipe body, both ends of the butt-joint pipe body are connected to a butt-joint connecting disk (5), the butt-joint connecting disk (5) is connected to an air supply device, the air supply device supplies air into the butt-joint pipe body through the butt-joint connecting disk (5), and a circuit breaker control component (12) is installed in the circuit breaker control structure (8); The circuit breaker control component (12) comprises a docking conductive seat (16), a matching adjustment frame (13), a docking conductive rod (14), a first rack (15), a second rack (20), a lifting and telescopic device, a conductive connecting rod (22) and a telescopic control guide column (23); the docking conductive seat (16) and the conductive connecting rod (22) are respectively fixed to the two ends inside the docking pipe body; the docking conductive rod (14) is slidably connected to the internal through hole of the docking conductive seat (16); the matching adjustment frame (13) is fixed to a side of the docking conductive rod (14) away from the docking conductive seat (16); one end of the telescopic control guide column (23) is fixed to an end of the docking conductive rod (14) away from the docking conductive seat (16); and the other end of the telescopic control guide column (23) is slidably connected to the conductive connecting rod (22); The matching adjustment frame (13) is connected to a first rack (15), the first rack (15) is connected to a transmission mechanism (17), the transmission mechanism (17) comprises a first gear (24), a docking rotation shaft (26) and a second gear (27), the first gear (24) and the second gear (27) are respectively fixed to two ends of the docking rotation shaft (26), the first rack (15) is meshed with the first gear (24), the second gear (27) is meshed with the second rack (20), and the second rack (20) is fixedly connected to the telescopic end of the lifting and telescopic device.

2. The GIS circuit breaker according to claim 1, characterized in that: The circuit breaker control structure (8) further comprises a sleeve (10), wherein the sleeve (10) is arranged vertically with respect to the butt joint pipe body, the upper end of the sleeve (10) is welded and fixed to the butt joint pipe body, and the lifting and telescopic device is installed in the sleeve (10).

3. The GIS circuit breaker according to claim 1, characterized in that: The lifting and telescopic device is a hydraulic cylinder (18), and the piston rod (19) of the hydraulic cylinder (18) is fixedly connected to the second rack (20).

4. The GIS circuit breaker according to claim 1, characterized in that: The support base comprises a control base (6) and a reinforcement base (7), the reinforcement base (7) is fixed to the upper end of the control base (6), and the circuit breaker control structure (8) is installed on the upper end of the reinforcement base (7).

5. The GIS circuit breaker according to claim 1, characterized in that: The air supply device comprises a docking conduit (3), the docking conduit (3) being mounted on the upper end of the docking pipe body, the two ends of the docking conduit (3) being respectively connected to the air guide channels of the two docking connecting plates (5), and the docking conduit (3) being provided with a plurality of one-way connecting valves (2).

6. The GIS circuit breaker according to claim 5, characterized in that: The docking conduit (3) is provided with a pressure gauge.

7. The GIS circuit breaker according to claim 1, characterized in that: A docking flange (4) is installed on a surface of the docking connecting plate (5) away from the docking pipe body.

8. The GIS circuit breaker according to claim 1, characterized in that: A position-limiting fixing block (25) is provided in the butt joint pipe body, and the butt joint rotating shaft (26) is rotatably connected to the position-limiting fixing block (25).

9. The GIS circuit breaker according to claim 1, characterized in that: The butt-joint pipe body is formed by welding a first butt-joint pipe (9) and a second butt-joint pipe (11).

10. The GIS circuit breaker according to claim 1, characterized in that: A laminating frame (21) is provided on one side of the second rack (20), and the laminating frame (21) is in contact with a side surface of the second gear (27).

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