A switch cabinet providing kinetic energy closing through energy storage structure

Abstract

The utility model relates to a switch cabinet, concretely is a switch cabinet that provides kinetic energy closing through energy storage structure, including cabinet body, still include static contact, install on the cabinet body, base, install on the cabinet body, the rotatory rod is set up on the base and rotates, and the rotatory rod's end installs the dynamic contact that cooperates with static contact, energy storage structure, energy storage structure can drive the rotatory rod rotation when releasing energy storage, to drive dynamic contact and static contact and resist the contact, grounding structure, including the first contact and second contact that cooperate with each other, still include drive structure, drive structure is used for in the closing process drive energy storage structure executes energy storage action, and drive grounding action, to drive the first contact and second contact separate, then drive energy storage structure executes energy storage release action, through the cooperation of drive structure, energy storage structure and grounding structure, can ensure before the switch cabinet closing, disconnects with the access state of ground, to avoid forming short circuit, causes equipment damage or personal accident.

Description

Technical Field

[0001] This utility model relates to a switch cabinet, specifically a switch cabinet that uses an energy storage structure to provide kinetic energy for closing the circuit. Background Technology

[0002] Switchgear is a complete set of electrical equipment used in power systems for distributing, controlling, protecting, and monitoring electrical energy. It is widely used in power plants, substations, industrial and mining enterprises, and building power distribution. The safe and stable operation of switchgear is a necessary condition for production and daily life. Therefore, switchgear is often equipped with important control modules such as closing mechanisms, circuit breaking modules, and grounding modules to ensure its stable and safe operation.

[0003] A common closing structure includes a rotating rod with a moving contact fixedly mounted on it; it also includes a stationary contact and an energy storage structure that can drive the rotating rod to rotate; the energy storage structure releases stored energy to drive the moving contact to make rapid contact with the stationary contact to complete the closing action.

[0004] Before closing the circuit, it is necessary to ensure that the grounding module is in an open circuit state (live grounding is equivalent to a phase line being directly short-circuited to the ground, and an instantaneous electric arc can melt metal). Usually, the grounding module and the closing structure are controlled separately. Therefore, when performing closing operations on switchgear with many control modules, misoperation is prone to occur, or live grounding may occur due to system faults, which may lead to safety accidents. Utility Model Content

[0005] The purpose of this invention is to provide a switchgear that provides kinetic energy for closing via an energy storage structure, in order to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution:

[0007] A switchgear that provides kinetic energy for closing via an energy storage structure, comprising a cabinet;

[0008] It also includes a static contact, which is installed on the cabinet;

[0009] A base is installed on the cabinet, and a rotating rod is rotatably mounted on the base. A moving contact that cooperates with the stationary contact is installed at the end of the rotating rod.

[0010] An energy storage structure, which, when releasing stored energy, can drive the rotating rod to rotate, thereby causing the moving contact to contact the stationary contact;

[0011] Grounding structure; including a first contact and a second contact that cooperate with each other;

[0012] It also includes a drive structure, which is used to drive the energy storage structure to perform an energy storage action during the closing process, and to drive the grounding action to separate the first contact from the second contact; then drive the energy storage structure to perform an energy storage release action.

[0013] The switchgear that provides kinetic energy for closing via an energy storage structure as described above: the energy storage structure further includes a hinge rod mounted on the rotating rod and hinged to the base; a first fixed column is mounted on the base; a second fixed column is mounted on the rotating rod; the first fixed column and the second fixed column are connected by a tension spring.

[0014] The switchgear that provides kinetic energy for closing via an energy storage structure as described above: the drive structure includes a mounting frame installed on the cabinet; a push plate is slidably mounted on the mounting frame; a groove is provided on the push plate that is slidably connected to the rotating rod; and a wedge is installed on the push plate.

[0015] As described above, the switchgear that provides kinetic energy for closing via an energy storage structure includes: a motor mounted on the mounting frame, a lead screw mounted on the output end of the motor, and a threaded sleeve threadedly connected to the lead screw and fixedly connected to the push plate.

[0016] As described above, the switchgear that provides kinetic energy for closing via an energy storage structure: the side of the wedge block away from the rotating rod is inclined; and the side of the wedge block away from the push plate is horizontal.

[0017] As described above, the switchgear that provides kinetic energy for closing via an energy storage structure includes a grounding structure that further includes a fixed sleeve mounted on the mounting frame. The first contact and the second contact are slidably connected to both ends of the fixed sleeve. The end of the second contact is fitted with a top plate that abuts against the wedge. A return spring is wrapped around the second contact, and both ends of the return spring abut against the top plate and the fixed sleeve, respectively.

[0018] As described above, the switchgear that provides kinetic energy for closing via an energy storage structure has a buffer spring wrapped around the first contact, and the two ends of the buffer spring respectively abut against the first contact and the fixed sleeve.

[0019] Compared with existing technologies, the beneficial effects of this utility model are as follows: Through the energy storage and release of the energy storage structure, the moving contact and the stationary contact can be driven to quickly contact each other, thereby reducing the energy of the pre-breakdown arc and improving the service life of the switchgear. The grounding structure discharges fault current or provides a safety barrier; the cooperation of the driving structure, energy storage structure, and grounding structure ensures that the circuit with the ground is broken before the switchgear is closed, preventing short circuits that could lead to explosions, equipment damage, or personal injury; and after the switchgear is disconnected, a circuit with the ground is formed, providing a safety barrier. Attached Figure Description

[0020] Figure 1 A schematic diagram of a switchgear that uses an energy storage structure to provide kinetic energy for closing the circuit.

[0021] Figure 2 A schematic diagram of the stationary contact in a switchgear that uses an energy storage structure to provide kinetic energy for closing.

[0022] Figure 3 A schematic diagram of the mounting frame in a switchgear that uses an energy storage structure to provide kinetic energy for closing.

[0023] Figure 4 for Figure 3 A structural schematic diagram from a cross-sectional perspective.

[0024] Figure 5 A schematic diagram of the push plate in a switchgear that provides kinetic energy for closing via an energy storage structure.

[0025] In the diagram: 1. Cabinet;

[0026] 2. Static contactor;

[0027] 3. Install the frame;

[0028] 4. Base; 401. First fixing post;

[0029] 5. Rotating rod; 501. Second fixed column;

[0030] 6. Moving contact;

[0031] 7. Hinge rod;

[0032] 8. Tension spring;

[0033] 9. Electric motor;

[0034] 10. Lead screw column;

[0035] 11. Threaded sleeve;

[0036] 12. Push plate; 1201. Slide groove;

[0037] 13. Wedge block;

[0038] 14. Fixing sleeve;

[0039] 15. First contact; 16. Buffer spring;

[0040] 17. Second tentacles;

[0041] 18. Return spring;

[0042] 19. Top plate. Detailed Implementation

[0043] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0044] Please see Figures 1-5 As an embodiment of the present utility model, the switch cabinet that provides kinetic energy for closing via an energy storage structure includes a cabinet body 1;

[0045] It also includes a static contact 2, which is installed on the cabinet 1;

[0046] A base 4 is installed on the cabinet 1. A rotating rod 5 is rotatably mounted on the base 4. A moving contact 6 that cooperates with the stationary contact 2 is installed at the end of the rotating rod 5.

[0047] An energy storage structure, when releasing stored energy, can drive the rotating rod 5 to rotate, thereby causing the moving contact 6 to contact the stationary contact 2;

[0048] Grounding structure; including a first contact 15 and a second contact 17 that cooperate with each other;

[0049] It also includes a drive structure, which is used to drive the energy storage structure to perform an energy storage action during the closing process, and to drive the grounding action to separate the first contact 15 from the second contact 17; then drive the energy storage structure to perform an energy storage release action.

[0050] In this embodiment, when the circuit is tripped, the moving contact 6 and the stationary contact 2 are in a separated state; and at this time, the first contact 15 and the second contact 17 are in a contacting state; that is, the switch cabinet is in a de-energized state and is in a grounded state.

[0051] When closing the circuit is required, the drive structure is controlled to move, thereby driving the energy storage structure and the grounding structure to move.

[0052] The energy storage structure first performs the energy storage action; at the same time, the second contact 17 gradually moves away from the first contact 15; and when the energy storage is completed, the second contact 17 has separated from the first contact 15; then, the driving structure drives the energy storage structure to perform the energy storage release action.

[0053] During the energy release process, the rotating rod 5 rotates on the base 4, thereby causing the moving contact 6 to quickly approach and contact the stationary contact 2 to complete the closing action. At this time, the switch cabinet is energized and disconnected from the ground.

[0054] The energy storage and release mechanism of the energy storage structure enables the moving contact 6 and the stationary contact 2 to quickly come into contact, thereby reducing the energy of the pre-breakdown arc and improving the service life of the switchgear. The grounding structure discharges fault current or provides a safety barrier. The coordinated operation of the drive structure, energy storage structure, and grounding structure ensures that the circuit to the ground is broken before the switchgear is closed, preventing short circuits that could lead to explosions, equipment damage, or personal injury. After the switchgear is disconnected, a circuit to the ground is formed, providing a safety barrier.

[0055] As a further embodiment of this utility model, the energy storage structure further includes a hinge rod 7 mounted on the rotating rod 5 and hinged to the base 4; a first fixing column 401 is mounted on the base 4; a second fixing column 501 is mounted on the rotating rod 5; the first fixing column 401 and the second fixing column 501 are connected by a tension spring 8.

[0056] In this embodiment, when the axis of the second fixed column 501 is located on the line connecting the axis of the first fixed column 401 and the axis of the hinge rod 7, the rotating rod 5 is in the equilibrium position. At this time, the extension of the tension spring 8 is the largest, and the stored energy is also the largest.

[0057] During the process of the driving structure causing the grounding structure to move, thereby causing the second contact 17 to separate from the first contact 15, the driving structure will drive the rotating rod 5 to rotate, gradually approaching the equilibrium position. During this process, the elongation of the tension spring 8 gradually increases (energy storage process).

[0058] After the second contact 17 separates from the first contact 15 and the rotating rod 5 passes the equilibrium position, the rotating rod 5 will rotate rapidly under the elastic force of the tension spring 8, so as to drive the moving contact 6 to quickly approach and contact the stationary contact 2 (to release stored energy).

[0059] Through the energy storage and release of the energy storage structure, the moving contact 6 and the stationary contact 2 can be driven to make rapid contact, thereby reducing the energy of the pre-breakdown arc and improving the service life of the switchgear.

[0060] As a further embodiment of this utility model, the drive structure includes a mounting frame 3 installed on the cabinet 1; a push plate 12 is slidably mounted on the mounting frame 3; a groove 1201 is provided on the push plate 12 that is slidably connected to the rotating rod 5; and a wedge block 13 is installed on the push plate 12.

[0061] As a further embodiment of this utility model, a motor 9 is mounted on the mounting frame 3, a lead screw 10 is mounted on the output end of the motor 9, and a threaded sleeve 11 that is fixedly connected to the push plate 12 is threaded onto the lead screw 10.

[0062] In this embodiment, the closing process is as follows: the control motor 9 operates to drive the lead screw 10 to rotate, thereby driving the threaded sleeve 11 to move along the length of the lead screw 10 through the threaded engagement with the threaded sleeve 11, so as to drive the push plate 12 to move closer to the stationary contact 2; during this process, the groove wall at one end of the slide groove 1201 will squeeze the rotating rod 5, thereby driving the rotating rod 5 to rotate; the rotating rod 5 will gradually approach the equilibrium position, and when the rotating rod 5 passes the equilibrium position, the motor 9 stops rotating; the rotating rod 5 will swing from one end to the other in the slide groove 1201 until the moving contact 6 abuts against the stationary contact 2.

[0063] As the rotating rod 5 approaches the equilibrium position, the wedge block 13 will engage with the grounding structure, thereby separating the second contact 17 from the first contact 15.

[0064] By coordinating the drive structure, energy storage structure, and grounding structure, it is possible to ensure that the circuit with the ground is disconnected before the switchgear is closed, so as to avoid short circuits that could lead to explosions, equipment damage, or personal injury.

[0065] As a further embodiment of this utility model, the wedge block 13 is inclined on the side away from the rotating rod 5; and the wedge block 13 is horizontally arranged on the side away from the push plate 12.

[0066] As a further embodiment of this utility model, the grounding structure also includes a fixed sleeve 14 installed on the mounting frame 3. The first contact 15 and the second contact 17 are slidably connected to both ends of the fixed sleeve 14. The end of the second contact 17 is equipped with a top plate 19 that abuts against the wedge block 13. A return spring 18 is wrapped around the second contact 17. The two ends of the return spring 18 abut against the top plate 19 and the fixed sleeve 14, respectively.

[0067] In this embodiment, in the initial position (stationary contact 2 and moving contact 6 are separated), wedge block 13 abuts against top plate 19, at which time first contact 15 abuts against second contact 17, and return spring 18 is in a compressed state (the switch cabinet forms a path with the ground).

[0068] When the push plate 12 moves toward the stationary contact 2, it will drive the wedge block 13 to move synchronously. During this process, the horizontally set surface of the wedge block 13 will slide on the top plate 19, and the contact area between the two will gradually decrease. When the wedge block 13 disengages from the top plate 19, the elastic force of the return spring 18 will act on the top plate 19, thereby driving the second contact 17 away from the first contact 15 to disconnect the passage to the ground.

[0069] During the circuit breaker tripping process, the motor 9 rotates in the reverse direction to drive the push plate 12 away from the stationary contact 2. During this process, the groove wall of the slide 1201 near the stationary contact 2 presses against the rotating rod 5, thereby driving the rotating rod 5 to rotate in the reverse direction (towards the equilibrium position) so that the stationary contact 2 and the moving contact 6 are separated. When the rotating rod 5 crosses the equilibrium position in the reverse direction, the rotating rod 5 will swing in the slide 1201 until it contacts the groove wall at the other end.

[0070] Furthermore, as the rotating rod 5 approaches the equilibrium position, the inclined surface of the wedge block 13 will contact the top plate 19, and after contact, it will press the top plate 19 to drive the second contact 17 to approach the first contact 15. When the horizontally set surface contacts the top plate 19, the second contact 17 will contact the first contact 15 (the switch cabinet forms a passage with the ground).

[0071] By coordinating the drive structure, energy storage structure, and grounding structure, it is possible to ensure that the circuit with the ground is disconnected before the switchgear is closed, so as to avoid short circuits that could lead to explosions, equipment damage, or personal injury.

[0072] As a further embodiment of this utility model, a buffer spring 16 is wrapped around the first contact 15, and the two ends of the buffer spring 16 respectively abut against the first contact 15 and the fixed sleeve 14.

[0073] In this embodiment, after the second contact 17 contacts the first contact 15, it will squeeze the first contact 15 to drive the first contact 15 to slide away from the second contact 17 and compress the buffer spring 16. The elastic force of the buffer spring 16 can ensure that the second contact 17 and the first contact 15 are in close contact and can prevent the grounding structure from being damaged due to excessive pressure.

[0074] The above embodiments are exemplary and not restrictive. Therefore, without departing from the spirit or basic characteristics of this utility model, any technical solutions that can be implemented in other specific forms are included in this utility model.

Claims

1. A switchgear that provides kinetic energy for closing via an energy storage structure, comprising a cabinet (1); Its features are, It also includes a static contact (2), which is installed on the cabinet (1); The base (4) is installed on the cabinet (1). A rotating rod (5) is rotatably provided on the base (4). A moving contact (6) that cooperates with the stationary contact (2) is installed at the end of the rotating rod (5). An energy storage structure that, when releasing stored energy, can drive the rotating rod (5) to rotate, thereby causing the moving contact (6) to collide with the stationary contact (2); Grounding structure; including a first contact (15) and a second contact (17) that cooperate with each other; It also includes a drive structure, which is used to drive the energy storage structure to perform energy storage action during the closing process and drive the grounding action to drive the first contact (15) and the second contact (17) to separate; and then drive the energy storage structure to perform energy storage release action.

2. A switchgear for closing circuits using an energy storage structure as described in claim 1, characterized in that, The energy storage structure also includes a hinge rod (7) mounted on the rotating rod (5) and hinged to the base (4); a first fixing column (401) is mounted on the base (4); a second fixing column (501) is mounted on the rotating rod (5); the first fixing column (401) and the second fixing column (501) are connected by a tension spring (8).

3. A switchgear for providing kinetic energy for closing via an energy storage structure according to claim 2, characterized in that, The drive structure includes a mounting frame (3) mounted on the cabinet (1); a push plate (12) is slidably mounted on the mounting frame (3); a groove (1201) is provided on the push plate (12) to be slidably connected to the rotating rod (5); and a wedge (13) is mounted on the push plate (12).

4. A switchgear cabinet providing kinetic energy closing by energy storage structure according to claim 3, characterized in that, A motor (9) is mounted on the mounting frame (3), and a lead screw (10) is mounted on the output end of the motor (9). A threaded sleeve (11) that is fixedly connected to the push plate (12) is threaded onto the lead screw (10).

5. A switchgear for providing kinetic energy for closing via an energy storage structure according to claim 3, characterized in that, The wedge (13) is inclined on the side away from the rotating rod (5); and the wedge (13) is horizontal on the side away from the push plate (12).

6. A switchgear for providing kinetic energy for closing via an energy storage structure according to claim 5, characterized in that, The grounding structure also includes a fixed sleeve (14) installed on the mounting frame (3). The first contact (15) and the second contact (17) are slidably connected to both ends of the fixed sleeve (14). The end of the second contact (17) is fitted with a top plate (19) that abuts against the wedge (13). A return spring (18) is wrapped around the second contact (17). Both ends of the return spring (18) abut against the top plate (19) and the fixed sleeve (14) respectively.

7. A switchgear for closing circuits by providing kinetic energy through an energy storage structure according to claim 6, characterized in that, A buffer spring (16) is wrapped around the first contact (15), and the two ends of the buffer spring (16) respectively abut against the first contact (15) and the fixed sleeve (14).

Images