High-current medium-voltage switch cabinet anti-eddy current structure

Abstract

The utility model discloses an anti-eddy current structure of a heavy-current medium-voltage switch cabinet, which belongs to the technical field of medium-voltage switch cabinets and is characterized by comprising a cabinet body, a bus frame is mounted on the inner wall of the cabinet body, a cooling fan is mounted on the inner side of the cabinet body, contact plates are arranged on two sides of the bus frame, and the contact plates are connected with the bus frame. The left side of the contact plate is in bolted connection with a sliding rod, the left side of the sliding rod is in bolted connection with a push plate, and the outer side of the push plate is in sliding connection with a sliding plate. Through the arrangement of the bus frame, the bus can be connected with the bus frame when being connected into the cabinet body, the insulating frame body can effectively reduce the generation probability of eddy current; and by rotating the adjusting screw rod, the fixed plate and the insulating pad can be conveniently, stably and quickly connected with the bus, and the arranged cooling fan can accelerate the circulation of air around the structure when the interior of the structure is overheated, so that the cooling action is facilitated, and the probability that the structure is damaged due to heating is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of medium-voltage switch cabinets, and particularly relates to an anti-eddy current structure for a large-current medium-voltage switch cabinet. Background Art

[0002] A medium-voltage switch cabinet is the common name for a metal-enclosed switchgear. A metal-enclosed switch refers to a switchgear that is completely enclosed by a metal shell except for the incoming and outgoing lines. The shell and partition of the switch cabinet are made of aluminized zinc steel plates. The entire cabinet not only has high precision, anti-oxidation and corrosion resistance, but also has high mechanical strength, beautiful appearance. The cabinet adopts an assembled structure, and the assembled switch cabinet can maintain dimensional unity. The switch cabinet is divided into a handcart-type circuit breaker chamber, a busbar chamber, a cable chamber and a secondary instrument low-voltage chamber. Each unit is well grounded. When a large current passes through, eddy currents may be generated, causing the temperature inside the switch cabinet to rise, easily leading to heat damage to the internal structure or reducing the service life.

[0003] The existing medium-voltage switch cabinets are limited by the insulation of their busbar inputs during use, so it is difficult to prevent the generation of eddy currents. And during long-term operation, a relatively high temperature may still be generated at the busbar input position, making it inconvenient to use. Summary of the Utility Model

[0004] The utility model provides an anti-eddy current structure for a large-current medium-voltage switch cabinet, aiming to solve the problems that the existing medium-voltage switch cabinets are limited by the insulation of their busbar inputs during use, so it is difficult to prevent the generation of eddy currents, and a relatively high temperature may still be generated at the busbar input position during long-term operation, making it inconvenient to use.

[0005] The utility model is implemented as follows. An anti-eddy current structure for a large-current medium-voltage switch cabinet includes a cabinet body. A busbar rack is installed on the inner wall of the cabinet body. A heat dissipation fan is installed inside the cabinet body. Contact plates are arranged on both sides of the busbar rack. A sliding rod is bolted to the left side of the contact plate. A push plate is bolted to the left side of the sliding rod. A sliding plate is slidably connected to the outside of the push plate. A housing is bolted to the outside of the sliding plate. The inside of the housing is filled with oil.

[0006] The busbar rack includes a rack body. An adjusting screw is threadedly connected to the right side of the rack body. A fixing plate is rotatably connected to the left side of the adjusting screw. An insulating pad is bolted to the left side of the fixing plate.

[0007] In order to achieve the effect of facilitating the connection between the cabinet body and the heat dissipation fan, as a preferred anti-eddy current structure for a large-current medium-voltage switch cabinet of the utility model, an inclined rack is bolted to the inner wall of the cabinet body, and the top of the inclined rack is bolted to the heat dissipation fan.

[0008] In order to achieve the effect of facilitating the improvement of heat dissipation efficiency, as an optimization of the anti-eddy current structure of a large-current medium-voltage switchgear of the present utility model, a liquid pump is installed at the top of the inclined frame, a cooling pipe is bolted to the front side of the liquid pump, and the cooling pipe is arranged on the left side of the cooling fan.

[0009] In order to achieve the effect of facilitating the circulation of the coolant, as an optimization of the anti-eddy current structure of a large-current medium-voltage switchgear of the present utility model, a heat exchanger is bolted to the rear side of the liquid pump, a water tank is installed on the right side of the heat exchanger, and the water tank is bolted to the side of the cooling pipe away from the liquid pump.

[0010] In order to achieve the effect of facilitating the installation of the frame body and the contact plate, as an optimization of the anti-eddy current structure of a large-current medium-voltage switchgear of the present utility model, side plates are bolted to the front side and the rear side of the frame body, the left side of the side plate is bolted to the contact plate, and the side plate and the frame body are integrally formed.

[0011] In order to achieve the effect of facilitating the limitation of the displacement between the outer shell and the contact plate, as an optimization of the anti-eddy current structure of a large-current medium-voltage switchgear of the present utility model, a spring is bolted to the right side of the outer shell, the right side of the spring is bolted to the contact plate, and the spring is arranged on the outer side of the slide bar.

[0012] In order to achieve the effect of facilitating the limitation of the movement of the fixed block, as an optimization of the anti-eddy current structure of a large-current medium-voltage switchgear of the present utility model, a limit block is bolted to the right side of the fixed plate, a limit sleeve is bolted to the right side of the frame body, and the inner side of the limit sleeve is slidably connected with the limit block.

[0013] In order to achieve the effect of facilitating the rotation of the adjusting screw, as an optimization of the anti-eddy current structure of a large-current medium-voltage switchgear of the present utility model, a handle is bolted to the right side of the adjusting screw, and anti-slip patterns are provided on the surface of the handle.

[0014] In order to achieve the effect of facilitating the circulation of the internal oil, as an optimization of the anti-eddy current structure of a large-current medium-voltage switchgear of the present utility model, a circulation hole is provided inside the sliding plate, and a limit strip is bolted to the outside of the sliding plate.

[0015] In order to achieve the effect of facilitating the connection between the outer shell and the cabinet body, as an optimization of the anti-eddy current structure of a large-current medium-voltage switchgear of the present utility model, a mounting plate is bolted to the outside of the outer shell, and a mounting bolt is movably connected to the inside of the mounting plate.

[0016] Compared with the prior art, the beneficial effects of the present utility model are:

[0017] The anti - eddy current structure of the high - current medium - voltage switchgear cabinet can be connected to the busbar rack when the busbar accesses the interior of the cabinet by setting up the busbar rack. The insulating rack can effectively reduce the probability of eddy current generation. When the busbar is inside the busbar rack, rotating the adjusting screw can facilitate the firm and rapid connection of the fixing plate and the insulating pad to the busbar. The set heat - dissipation fan can accelerate the air circulation around it when the structure is overheated to facilitate heat - dissipation operation, reducing the probability of heat - induced damage to the structure. The set sliding rod and push plate can make the connected outer shell move together when the cabinet or the installation environment vibrates. At this time, the relative movement of the sliding plate and the push plate drives the internal oil to flow to play a certain buffering effect, making the structure more stable. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 FIG. is the overall structure diagram of the anti - eddy current structure of the high - current medium - voltage switchgear cabinet of the present utility model;

[0019] Figure 2 FIG. is the structural schematic diagram of the heat - dissipation fan of the present utility model;

[0020] Figure 3 FIG. is the structural schematic diagram of the busbar rack of the present utility model;

[0021] Figure 4 FIG. is the structural schematic diagram of the outer shell of the present utility model;

[0022] Figure 5 FIG. is the internal schematic diagram of the outer shell of the present utility model;

[0023] Figure 6 FIG. is the internal schematic diagram of the rack of the present utility model.

[0024] In the figure, 1, cabinet; 2, busbar rack; 201, rack; 202, adjusting screw; 203, fixing plate; 204, insulating pad; 3, heat - dissipation fan; 4, contact plate; 5, sliding rod; 6, push plate; 7, sliding plate; 8, outer shell; 9, inclined rack; 10, liquid pump; 11, cooling pipe; 12, installation bolt; 13, heat exchanger; 14, water tank; 15, side plate; 16, spring; 17, limit block; 18, limit sleeve; 19, handle; 20, circulation hole; 21, limit strip; 22, mounting plate. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0025] In order to make the objectives, technical solutions and advantages of the present utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present utility model and are not used to limit the present utility model.

[0026] In the description of the present utility model, it should be understood that the orientation or positional relationship indicated by terms such as "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus cannot be construed as a limitation to the present utility model. In addition, in the description of the present utility model, the meaning of "a plurality" is two or more, unless otherwise specifically defined.

[0027] Please refer to Figures 1-6 , the present utility model provides a technical solution: an anti-eddy current structure for a large-current medium-voltage switch cabinet, which includes a cabinet body 1. A busbar rack 2 is installed on the inner wall of the cabinet body 1, a cooling fan 3 is installed inside the cabinet body 1. Contact plates 4 are arranged on both sides of the busbar rack 2. A sliding rod 5 is bolted to the left side of the contact plate 4. A push plate 6 is bolted to the left side of the sliding rod 5. A sliding plate 7 is slidably connected to the outside of the push plate 6. A housing 8 is bolted to the outside of the sliding plate 7. The inside of the housing 8 is filled with oil.

[0028] The busbar rack 2 includes a rack body 201. An adjusting screw rod 202 is threadedly connected to the right side of the rack body 201. A fixing plate 203 is rotatably connected to the left side of the adjusting screw rod 202. An insulating pad 204 is bolted to the left side of the fixing plate 203.

[0029] In this embodiment: By setting the busbar rack 2, when the busbar is connected to the inside of the cabinet body 1, it can be connected to the busbar rack 2. The insulating rack body 201 can effectively reduce the probability of eddy current generation. When the busbar is inside the busbar rack 2, rotating the adjusting screw rod 202 can facilitate the firm and rapid connection of the fixing plate 203 and the insulating pad 204 to the busbar. The provided cooling fan 3 can accelerate the air circulation around it when the structure is overheated to facilitate the heat dissipation action and reduce the probability of the structure being damaged by heat. The provided sliding rod 5 and the push plate 6 can make the connected housing 8 move together when the cabinet body 1 or the installation environment vibrates. At this time, the relative movement of the sliding plate 7 and the push plate 6 drives the internal oil to flow to play a certain buffering effect, making the structure more stable.

[0030] As a technical optimization solution of the present utility model, an inclined rack 9 is bolted to the inner wall of the cabinet body 1, and the top of the inclined rack 9 is bolted to the cooling fan 3.

[0031] In this embodiment: By setting the inclined rack 9, it can facilitate the connection between the cabinet body 1 and the cooling fan 3 and facilitate the installation between the structures.

[0032] As a technical optimization solution of the present utility model, a liquid pump 10 is installed at the top of the inclined frame 9, and a cooling pipe 11 is bolted to the front side of the liquid pump 10. The cooling pipe 11 is arranged on the left side of the cooling fan 3.

[0033] In this embodiment: By setting the liquid pump 10, it is convenient to extract the coolant and input it into the cooling pipe 11 to reduce the temperature of the air flow blown out by the cooling fan 3.

[0034] As a technical optimization solution of the present utility model, a heat exchanger 13 is bolted to the rear side of the liquid pump 10, a water tank 14 is installed on the right side of the heat exchanger 13, and the water tank 14 is bolted to the side of the cooling pipe 11 far from the liquid pump 10.

[0035] In this embodiment: By setting the heat exchanger 13 in cooperation with the water tank 14, it is convenient to perform the cooling cycle action on the coolant.

[0036] As a technical optimization solution of the present utility model, side plates 15 are bolted to the front side and the rear side of the frame body 201. The left side of the side plate 15 is bolted to the contact plate 4, and the side plate 15 and the frame body 201 are integrally formed.

[0037] In this embodiment: By setting the side plate 15, it is convenient to connect the frame body 201 and the contact plate 4, making the connection of the structure more reasonable.

[0038] As a technical optimization solution of the present utility model, a spring 16 is bolted to the right side of the outer shell 8, the right side of the spring 16 is bolted to the contact plate 4, and the spring 16 is arranged outside the sliding rod 5.

[0039] In this embodiment: By setting the spring 16, it is convenient to push the structure to reset through the spring 16 when the outer shell 8 and the sliding rod 5 slide relative to each other.

[0040] As a technical optimization solution of the present utility model, a limit block 17 is bolted to the right side of the fixing plate 203, a limit sleeve 18 is bolted to the right side of the frame body 201, and the inner side of the limit sleeve 18 is slidably connected to the limit block 17.

[0041] In this embodiment: By setting the limit block 17 in cooperation with the limit sleeve 18, it is convenient to limit the movement of the fixing plate 203 and prevent it from rotating or tilting.

[0042] As a technical optimization solution of the present utility model, a handle 19 is bolted to the right side of the adjusting screw 202, and anti-slip grooves are formed on the surface of the handle 19.

[0043] In this embodiment: By setting the handle 19, it is convenient to rotate the adjusting screw 202, and the anti-slip grooves provided can prevent the hand from slipping.

[0044] As a technical optimization solution of the utility model, a circulation hole 20 is formed in the inner side of the sliding plate 7, and a limiting strip 21 is bolted to the outer side of the sliding plate 7.

[0045] In this embodiment: By providing the circulation hole 20 in cooperation with the limiting strip 21, it is convenient to limit the sliding position of the sliding plate 7, and the circulation hole 20 is used for the circulation of the hydraulic fluid.

[0046] As a technical optimization solution of the utility model, a mounting plate 22 is bolted to the outer side of the housing 8, and a mounting bolt 12 is movably connected to the inner side of the mounting plate 22.

[0047] In this embodiment: By providing the mounting plate 22 in cooperation with the mounting bolt 12, it is convenient to connect the housing 8 and the cabinet body 1.

[0048] Working principle: First, when in use, the busbar is connected into the cabinet body 1 and snapped into the inner side of the busbar rack 2. At this time, the operator can rotate the adjusting screw rod 202 through the handle 19 to stably and quickly connect the fixing plate 203 and the insulating pad 204 to the busbar. The insulating frame body 201 in cooperation with the insulating pad 204 can effectively avoid the generation of eddy currents. The provided cooling fan 3 can accelerate the air circulation around it when the structure is overheated inside, and cooperate with the liquid pump 10 to extract the cooled cooling pipe 11 and the coolant of the heat exchanger 13 for heat dissipation. The provided sliding rod 5 in cooperation with the push plate 6 can make the connected housing 8 move together when the cabinet body 1 or the installation environment vibrates. At this time, the sliding plate 7 and the push plate 6 move relatively to squeeze the internal hydraulic fluid to flow along the circulation hole 20 to play a certain buffering effect, and return to the original position by the rebound of the spring 16 when the force or vibration stops.

[0049] The above are only the preferred embodiments of the utility model and are not intended to limit the utility model. Any modifications, equivalent replacements, and improvements made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. A high current medium voltage switch cabinet anti-eddy current structure, comprising a cabinet body (1), characterized in that: A busbar frame (2) is installed on the inner wall of the cabinet (1), a cooling fan (3) is installed on the inner side of the cabinet (1), contact plates (4) are arranged on both sides of the busbar frame (2), a sliding rod (5) is bolted to the left side of the contact plate (4), a push plate (6) is bolted to the left side of the sliding rod (5), a slide plate (7) is slidably connected to the outer side of the push plate (6), an outer shell (8) is bolted to the outer side of the slide plate (7), and the inner side of the shell (8) is filled with oil; The busbar frame (2) comprises a frame body (201), the right side of the frame body (201) is threadedly connected to an adjusting screw (202), the left side of the adjusting screw (202) is rotatably connected to a fixing plate (203), and the left side of the fixing plate (203) is bolted to an insulating pad (204).

2. The anti-eddy current structure of a large current medium voltage switch cabinet according to claim 1, characterized in that: The inner wall of the cabinet (1) is bolted with a tilting frame (9), and the top of the tilting frame (9) is bolted to the cooling fan (3).

3. The anti-eddy current structure of a large current medium voltage switch cabinet according to claim 2, characterized in that: A liquid pump (10) is installed on the top of the tilting frame (9), a cooling pipe (11) is bolted to the front side of the liquid pump (10), and the cooling pipe (11) is arranged on the left side of the cooling fan (3).

4. The anti-eddy current structure of a large current medium voltage switch cabinet according to claim 3, characterized in that: A heat exchanger (13) is bolted to the rear side of the liquid pump (10), a water tank (14) is installed on the right side of the heat exchanger (13), and the water tank (14) is bolted to the side of the cooling pipe (11) away from the liquid pump (10).

5. The anti-eddy current structure of a large current medium voltage switch cabinet according to claim 1, characterized in that: The front and rear sides of the frame body (201) are both bolted with side plates (15), the left side of the side plate (15) is bolted to the contact plate (4), and the side plate (15) and the frame body (201) are integrally formed.

6. The anti-eddy current structure of a large current medium voltage switch cabinet according to claim 1, characterized in that: A spring (16) is bolted to the right side of the housing (8), the right side of the spring (16) is bolted to the contact plate (4), and the spring (16) is arranged on the outside of the slide rod (5).

7. The anti-eddy current structure of a large current medium voltage switch cabinet according to claim 1, characterized in that: The right side of the fixing plate (203) is bolted to a limiting block (17), the right side of the frame body (201) is bolted to a limiting sleeve (18), and the inner side of the limiting sleeve (18) is slidably connected to the limiting block (17).

8. The anti-eddy current structure of a large current medium voltage switch cabinet according to claim 1, characterized in that: The right side of the adjusting screw rod (202) is bolted with a handle (19), and the surface of the handle (19) is provided with anti-slip patterns.

9. The anti-eddy current structure of a large current medium voltage switch cabinet according to claim 1, characterized in that: A flow hole (20) is provided on the inner side of the slide plate (7), and a limit strip (21) is bolted to the outer side of the slide plate (7).

10. The anti-eddy current structure of a large current medium voltage switch cabinet according to claim 1, characterized in that: The outer side of the housing (8) is bolted with a mounting plate (22), and the inner side of the mounting plate (22) is movably connected with a mounting bolt (12).

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