High-voltage switch cabinet with five-prevention interlocking function

Abstract

The utility model relates to the technical field of high-voltage switch cabinets, and discloses a high-voltage switch cabinet with a five-prevention interlocking function, which comprises a switch cabinet main body, a control switch, a sealing protection assembly, a fixing assembly and a protection cover. According to the utility model, the sealing protection assembly and the fixing assembly are arranged, the sealing protection assembly can protect the control switch arranged outside the switch cabinet main body, dust in the air can be isolated from the control switch, and when the sealing protection assembly is started to operate the control switch, the dust in the air can be prevented from being separated from the control switch. The sealing protection assembly can be quickly unlocked by shifting the fixing assembly, the sealing protection assembly can be quickly rotated and bounced off by itself, and the operation steps needed by operators are reduced.

Description

Technical Field

[0001] This utility model relates to the field of high voltage switchgear technology, specifically a high voltage switchgear with five-proof interlocking functions. Background Technology

[0002] High-voltage switchgear is an indispensable and important piece of equipment in the power system. High-voltage switchgear with five-proof interlocking functions is particularly favored for its excellent safety and reliability. With its comprehensive safety protection measures and efficient operation, high-voltage switchgear with five-proof interlocking functions plays a vital role in the power industry and is one of the key pieces of equipment to ensure the safe and reliable operation of the power system.

[0003] According to Chinese announcement number CN221150652U, a switchgear with a five-proof interlocking structure includes a cabinet body and an insulating cabinet door; it also includes an insulating protection box, an interlocking structure, and a drive assembly. The insulating protection box is installed at the top of the cabinet body, and the interlocking structure is installed inside the insulating protection box. The interlocking structure includes a lead screw, a gear, a first circuit breaker, and a second circuit breaker. A connecting rod is connected to the lead screw via a lead screw slider. The bottom end of the connecting rod is equipped with the first circuit breaker and the second circuit breaker, which respectively contact the circuit breaker body. One end of the lead screw extends out of the insulating protection box and is equipped with the first gear and the second gear. This utility model uses a cylinder to drive a rack plate to move, thereby driving the first gear and the lead screw to rotate, which in turn drives the circuit breaker at the bottom of the connecting rod to switch on and off with the circuit breaker body via the lead screw slider. This achieves complete de-energization and energization of the internal circuits of the switchgear, improves maintenance efficiency, and effectively avoids the risk of electric shock when manually closing the circuit breakers.

[0004] The switch cabinet has external switches for control. Since the switches are exposed to the air, dust in the air can easily enter the gaps of the switches. Dust particles act as abrasives during the operation of the switches, accelerating the wear of related components and shortening their service life. When a lot of dust accumulates, it can easily cause the internal switch mechanism to get stuck, making it impossible to operate normally. Utility Model Content

[0005] The purpose of this utility model is to provide a high-voltage switchgear with five-proof interlocking functions to solve the problems mentioned in the background art, such as dust particles acting as abrasives during switch operation, accelerating the wear of related components, shortening service life, and when a large amount of dust accumulates, it can easily cause the switch mechanism to be jammed, making it impossible to perform normal switching operations.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a high-voltage switchgear with five-proof interlocking functions, comprising: a switchgear body, a control switch, a sealing protection component, a fixing component, and a protective cover. The high-voltage switchgear equipment consists of a switchgear body and a control switch disposed on the outer wall of the switchgear body. The sealing protection component is disposed on the outer wall of the control switch of the switchgear body. The sealing protection component includes a first block disposed on the outer wall above the control switch of the switchgear body, a first shaft welded inside the first block, a sealing shell rotatably connected to the first shaft, a sealing ring adhered to the inner wall of the sealing shell, a second block disposed on the outer wall below the control switch of the switchgear body, a second shaft welded inside the second block, a third shaft integrally formed on the outer wall of the sealing shell, and a first spring whose two ends are sleeved on the second and third shafts by rings. The fixing component is disposed on the outer wall below the sealing shell of the switchgear body, and the protective cover is welded to the outer wall above the sealing shell of the switchgear body.

[0007] By adopting the above technical solution, the internal control switches can be effectively sealed and isolated from rainwater.

[0008] Preferably, the fixing component includes a slide rail welded to the outer wall below the sealed outer shell of the switch cabinet body and a fixing plate welded to the bottom of the slide rail, wherein a circular hole is provided in the center of the fixing plate.

[0009] By adopting the above technical solution, it is possible to provide a structure on the slide rail that enables vertical sliding displacement.

[0010] Preferably, the fixing assembly further includes a slider slidably connected to the slide rail and a guide rod welded to the outer wall of the slider, the guide rod being slidably connected inside the circular hole of the fixing plate.

[0011] By adopting the above technical solution, the slider on the guide rod can achieve stable displacement.

[0012] Preferably, the cross-sectional shape of the slider is a trapezoidal block.

[0013] By adopting the above technical solution, the inclined surface shape can be used to push the slider to move during the contact process with the positioning block.

[0014] Preferably, the fixing component further includes a second spring sleeved on the guide rod, with both ends of the second spring respectively attached to the outer walls of the slider and the fixing plate.

[0015] By adopting the above technical solution, the slider can be moved by the compression of the second spring.

[0016] Preferably, the fixing component further includes a lever welded to the outer wall of the slider and a positioning block integrally formed on the outer wall of the sealed housing.

[0017] By adopting the above technical solution, the slider can be prevented from contacting the positioning block by moving the toggle block.

[0018] In summary, this utility model has at least one of the following beneficial effects:

[0019] (1) By setting a sealing protection component and a fixing component, the sealing protection component can protect the control switch located outside the main body of the switch cabinet, isolate the control switch from dust in the air, and when the sealing protection component is opened to operate the control switch, the sealing protection component can be quickly unlocked by moving the fixing component. The sealing protection component can be quickly rotated open by itself, reducing the number of steps required for the operator.

[0020] (2) By providing a protective cover, when the main body of the switch cabinet is in the open air, it can prevent rainwater from entering the gaps generated when the sealing and protective components are opened, thus effectively preventing rainwater from contacting the control switch. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the three-dimensional opening structure of this utility model;

[0022] Figure 2 This is a schematic diagram of the three-dimensional closed structure of this utility model;

[0023] Figure 3 This is a three-dimensional structural diagram of the front of the sealing and protection component and the fixing component of this utility model;

[0024] Figure 4 This is a three-dimensional structural diagram of the back of the sealing and protection component and the fixing component of this utility model.

[0025] In the diagram: 1. Switch cabinet body; 2. Control switch; 3. Sealing protection assembly; 301. Block 1; 302. Shaft 1; 303. Sealing shell; 304. Sealing ring; 305. Block 2; 306. Shaft 2; 307. Shaft 3; 308. Spring 1; 4. Fixing assembly; 401. Slide rail; 402. Fixing plate; 403. Slider; 404. Guide rod; 405. Spring 2; 406. Toggle block; 407. Positioning block; 5. Protective cover. Detailed Implementation

[0026] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0027] The following is in conjunction with the appendix Figure 1-4 The embodiments of this utility model will be described in further detail.

[0028] Example 1

[0029] Please see Figures 1-4 This embodiment provides a technical solution: a high-voltage switchgear with five-proof interlocking functions, including: switchgear body 1, control switch 2, sealing protection component 3, fixing component 4 and protective cover 5;

[0030] The high-voltage switchgear consists of a switchgear body 1 and control switches 2 mounted on the outer wall of the switchgear body 1. The switchgear body 1 is internally equipped with circuit breakers to prevent accidental opening and closing. Through mechanical or electrical interlocking devices, it is ensured that the circuit breakers can only be opened or closed when specific operating conditions and sequences are met, preventing power failures and equipment damage due to misoperation and preventing the opening or closing of disconnecting switches under load. When there is current in the line, it is forbidden to operate the disconnecting switch to prevent arcing and serious accidents, and to prevent the grounding wire (grounding switch) from being connected (or closed) while energized. Grounding operations can only be performed after confirming that the relevant lines or equipment are completely de-energized, ensuring the personal safety of operators and preventing the circuit breaker (disconnecting switch) from being closed while the grounding wire (grounding switch) is connected. It is ensured that the circuit breaker and disconnecting switch cannot be closed before the grounding wire is removed to prevent short-circuit accidents and to prevent accidental entry into energized compartments. Through the cooperation of door locks and interlocking mechanisms, the cabinet door can only be opened when the corresponding compartment is in a safe state, preventing personnel from accidentally entering energized areas. The above is publicly available technology and will not be elaborated further below.

[0031] The sealing protection component 3 is installed on the outer wall of the control switch 2 of the switch cabinet body 1. The sealing protection component 3 includes a first block 301 installed on the outer wall above the control switch 2 of the switch cabinet body 1, a first shaft 302 welded inside the first block 301, a sealing shell 303 rotatably connected to the first shaft 302, a sealing ring 304 bonded to the inner wall of the sealing shell 303, a second block 305 installed on the outer wall below the control switch 2 of the switch cabinet body 1, a second shaft 306 welded inside the second block 305, a third shaft 307 integrally formed on the outer wall of the sealing shell 303, and a first spring 308 whose two ends are sleeved on the second shaft 306 and the third shaft 307 through rings. The fixing component 4 is installed on the outer wall below the sealing shell 303 of the switch cabinet body 1. The protective cover 5 is welded on the outer wall above the sealing shell 303 of the switch cabinet body 1.

[0032] The control switch 2, located on the exterior of the switch cabinet body 1, allows for quick operation of the interior of the switch cabinet body 1 without opening the cabinet door. When dust protection is required for the control switch 2, the sealing protection component 3 can be secured using the fixing component 4, thus quickly achieving a sealed environment. Furthermore, the protective cover 5 effectively blocks rainwater.

[0033] When the control switch 2, which is protected by the sealed housing 303 and the internal sealing ring 304, needs to be operated, the displacement of the fixing component 4 causes it to stop contacting the sealed housing 303. At this time, one end of the first spring 308 outside the sealed housing 303 is connected to the switch cabinet body 1 through the second shaft 306 inside the second block 305, and the other end of the first spring 308 is connected to the outside of the sealed housing 303 through the third shaft 307. The first spring 308, which is in a bent shape, will be straightened and reset. The sealed housing 303 is pushed by the first spring 308, which causes the sealed housing 303 to change angle through the first shaft 302 inside the first block 301, thereby enabling the control switch 2 inside the sealed housing 303 to be operated quickly.

[0034] Example 2

[0035] Please see Figures 1-4 This embodiment provides a technical solution: a high-voltage switchgear with five-proof interlocking functions, including: slide rail 401, fixing plate 402, slider 403, guide rod 404, second spring 405, toggle block 406 and positioning block 407;

[0036] The fixing component 4 includes a slide rail 401 welded to the outer wall below the sealed outer shell 303 of the switch cabinet body 1 and a fixing plate 402 welded to the bottom of the slide rail 401. A circular hole is provided in the center of the fixing plate 402. A slider 403 is slidably connected to the slide rail 401 and a guide rod 404 is welded to the outer wall of the slider 403. The guide rod 404 is slidably connected inside the circular hole of the fixing plate 402. The cross-sectional shape of the slider 403 is a trapezoidal block.

[0037] The fixing component 4 also includes a second spring 405 sleeved on the guide rod 404, with the two ends of the second spring 405 respectively attached to the outer walls of the slider 403 and the fixing plate 402, a toggle block 406 welded to the outer wall of the slider 403, and a positioning block 407 integrally formed on the outer wall of the sealing shell 303.

[0038] When it is necessary for slider 403 to no longer be engaged and fixed with positioning block 407 of sealing housing 303, slider 403 can be moved by hand lever 406. At this time, slider 403 achieves stable displacement through guide rod 404 in the circular hole of slide rail 401 and fixing plate 402. At this time, slider 403 is no longer squeezed by spring 405, so slider 403 no longer engages and is fixed with positioning block 407.

[0039] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

Claims

1. A high-voltage switchgear with five-proof interlocking functions, characterized in that, include: The high voltage switchgear equipment consists of a switchgear body (1) and a control switch (2) installed on the outer wall of the switchgear body (1); A sealing protection component (3) is provided on the outer wall of the control switch (2) of the switch cabinet body (1). The sealing protection component (3) includes a first block (301) provided on the outer wall above the control switch (2) of the switch cabinet body (1), a first shaft (302) welded inside the first block (301), a sealing shell (303) rotatably connected to the first shaft (302), a sealing ring (304) bonded to the inner wall of the sealing shell (303), a second block (305) provided on the outer wall below the control switch (2) of the switch cabinet body (1), a second shaft (306) welded inside the second block (305), a third shaft (307) integrally formed on the outer wall of the sealing shell (303), and a first spring (308) with both ends sleeved on the second shaft (306) and the third shaft (307) by rings. Fixing component (4), the fixing component (4) is disposed on the outer wall below the sealed outer shell (303) of the switch cabinet body (1); The protective cover (5) is welded to the outer wall above the sealed outer shell (303) of the switch cabinet body (1).

2. A high-voltage switchgear with five-proof interlocking functions according to claim 1, characterized in that: The fixing component (4) includes a slide rail (401) welded to the outer wall below the sealed outer shell (303) of the switch cabinet body (1) and a fixing plate (402) welded to the bottom of the slide rail (401), wherein a round hole is provided in the center of the fixing plate (402).

3. A high-voltage switchgear with five-proof interlocking functions according to claim 2, characterized in that: The fixing component (4) further includes a slider (403) slidably connected to the slide rail (401) and a guide rod (404) welded to the outer wall of the slider (403), the guide rod (404) being slidably connected inside the circular hole of the fixing plate (402).

4. A high-voltage switchgear with five-proof interlocking functions according to claim 3, characterized in that: The cross-sectional shape of the slider (403) is a trapezoidal block.

5. A high-voltage switchgear with five-proof interlocking functions according to claim 3, characterized in that: The fixing component (4) also includes a second spring (405) sleeved on the guide rod (404), with the two ends of the second spring (405) respectively attached to the outer wall of the slider (403) and the fixing plate (402).

6. A high-voltage switchgear with five-proof interlocking functions according to claim 5, characterized in that: The fixing component (4) also includes a toggle block (406) welded to the outer wall of the slider (403) and a positioning block (407) integrally formed on the outer wall of the sealed housing (303).

Images