Draw-out type high-voltage switch cabinet

Abstract

The utility model discloses a draw-out type high-voltage switch cabinet, which comprises a cabinet body and a drawer, the cabinet body comprises two oppositely arranged side plates, a supporting structure is arranged between the side plates and the drawer, the supporting structure comprises a supporting seat and a supporting rod, the supporting seat is rotatably connected with the inner walls of the side plates, the supporting rod is of a telescopic rod structure, and the supporting rod comprises an outer rod and an inner rod. The bottom end of the outer rod is rotationally connected with the top of the supporting seat, the bottom end of the inner rod extends into the outer rod, the top end of the inner rod is rotationally connected with the side wall of the front end of the drawer, a clamping block is arranged on the inner wall of the top end of the outer rod, and an axial sliding groove in sliding fit with the clamping block is formed in the outer wall of the inner rod. And the outer wall of the bottom end of the inner rod is provided with a circumferential clamping groove which is communicated with the axial sliding groove and is used for clamping the clamping block. According to the draw-out type high-voltage switch cabinet provided by the utility model, when the drawer is drawn out in place, the front end of the drawer is supported through the supporting structure, so that the front end of the drawer is prevented from falling down to damage the guide rail, and the drawer can be prevented from slipping off, thereby improving the safety.

Description

Technical Field

[0001] This utility model relates to a withdrawable high-voltage switchgear. Background Technology

[0002] High-voltage switchgear refers to electrical products used in power systems for switching, control, or protection in power generation, transmission, distribution, energy conversion, and consumption. High-voltage switchgear is categorized into several main types based on voltage levels ranging from 3.6kV to 550kV, including high-voltage disconnect switches and grounding switches, high-voltage load switches, high-voltage automatic reclosers and sectionalizing devices, high-voltage operating mechanisms, high-voltage explosion-proof distribution equipment, and high-voltage switchgear itself. Switchgear features functions such as overhead line entry / exit, cable line entry / exit, and busbar connections. It is mainly suitable for various locations such as power plants, substations, petrochemical plants, metallurgical steel rolling mills, light industry and textiles, factories and mines, residential communities, and high-rise buildings.

[0003] Currently, to facilitate the maintenance of internal electrical equipment in high-voltage switchgear, pull-out switchgear is commonly used. This involves removing the installed electrical equipment from the switchgear by pulling out the drawer for maintenance. However, existing pull-out high-voltage switchgear has the following problems in practical use: when the drawer is fully extended, the weight of the electrical equipment and the lack of support for the front of the drawer make it easy for maintenance personnel to damage the guide rails as the drawer descends during maintenance. In severe cases, this can even cause the drawer to slip and fall, posing a safety hazard. Therefore, a corresponding technical solution needs to be designed to address these issues. Summary of the Invention

[0004] To overcome the aforementioned deficiencies of the prior art, this utility model provides a withdrawable high-voltage switchgear to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, the technical solution of this utility model is to design a withdrawable high-voltage switchgear, including a cabinet and a drawer disposed inside the cabinet, wherein the drawer is used to install electrical equipment.

[0006] The cabinet includes two opposing side panels. A support structure is provided between the side panels and the drawer. The support structure includes a support base and a support rod. The support base is rotatably connected to the inner wall of the side panel via a pin. The support rod is a telescopic rod structure and includes an outer rod and an inner rod. The bottom end of the outer rod is rotatably connected to the top of the support base via a bearing. The bottom end of the inner rod extends into the interior of the outer rod, and the top end of the inner rod is rotatably connected to the front side wall of the drawer via a pin. A locking block is provided on the inner wall of the top end of the outer rod. An axial groove is provided on the outer wall of the inner rod to slide with the locking block. A circumferential groove is provided on the outer wall of the bottom end of the inner rod to communicate with the axial groove and to allow the locking block to engage.

[0007] Preferably, the inner wall of the side panel is provided with a guide rail, the guide rail is provided with a guide groove, and the side wall of the drawer is provided with a slide bar that slides in cooperation with the guide groove.

[0008] Preferably, both the guide groove and the slide bar have a T-shaped cross-section.

[0009] Preferably, the side plate is provided with a heat dissipation structure, which includes a plurality of heat dissipation openings arranged at equal intervals along the vertical direction.

[0010] Preferably, a rain shield is provided on the outer side of the heat dissipation opening. The rain shield is inclined and its high end is fixedly connected to the outer wall of the side plate.

[0011] The advantages and beneficial effects of this utility model are as follows: It provides a pull-out high-voltage switchgear with a reasonable structure. When the drawer is pulled out to the correct position, the front end of the drawer is supported by a support structure to prevent the front end of the drawer from falling and damaging the guide rail. It can also prevent the drawer from slipping and thus improve safety.

[0012] In addition, by setting up a heat dissipation structure for heat dissipation inside the cabinet, when the switch cabinet is used outdoors, the rain guard can prevent rainwater from entering the cabinet through the heat dissipation structure, so as to avoid damaging the electrical equipment. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the support structure in this utility model.

[0014] Figure 2 yes Figure 1 Enlarged view of point A in the middle.

[0015] Figure 3 yes Figure 1 Enlarged view of point B in the middle.

[0016] Figure 4 This is a schematic diagram of the heat dissipation structure in this utility model.

[0017] Reference numerals: 1. Drawer; 2. Side panel; 21. Ventilation opening; 3. Support base; 4. Support rod; 41. Outer rod; 42. Inner rod; 43. Locking block; 44. Axial groove; 45. Circumferential groove; 5. Guide rail; 6. Sliding strip; 7. Rain guard. Detailed Implementation

[0018] The specific embodiments of this utility model will be further described below with reference to the accompanying drawings and examples. The following examples are only used to more clearly illustrate the technical solution of this utility model and should not be construed as limiting the scope of protection of this utility model.

[0019] The specific technical solution of this utility model is as follows:

[0020] like Figures 1 to 4 As shown, a withdrawable high-voltage switchgear includes a cabinet and a drawer 1 disposed inside the cabinet, the drawer 1 being used to install electrical equipment;

[0021] The cabinet includes two opposing side panels 2. A support structure is provided between the side panels 2 and the drawer 1. The support structure includes a support base 3 and a support rod 4. The support base 3 is rotatably connected to the inner wall of the side panel 2 via a pin. The support rod 4 is a telescopic rod structure, and the support rod 4 includes an outer rod 41 and an inner rod 42. The bottom end of the outer rod 41 is rotatably connected to the top of the support base 3 via a bearing. The bottom end of the inner rod 42 extends into the interior of the outer rod 41, and the top end of the inner rod 42 is rotatably connected to the front side wall of the drawer 1 via a pin. A locking block 43 is provided on the inner wall of the top end of the outer rod 41. An axial groove 44 is provided on the outer wall of the inner rod 42 to slide with the locking block 43. A circumferential groove 45 is provided on the outer wall of the bottom end of the inner rod 42 to communicate with the axial groove 44 and to allow the locking block 43 to engage.

[0022] The above solution is adopted as follows: When drawer 1 is inside the cabinet, the support rod 4 is in a vertical state. When it is necessary to repair the electrical equipment installed in drawer 1, drawer 1 can be pulled out from inside the cabinet. During this process, drawer 1 will drive the support rod 4 and support base 3 to rotate. At the same time, the inner rod 42 of the support rod 4 will move axially relative to the outer rod 41 and extend out of the outer rod 41 until drawer 1 is pulled out to the end. Then, the support rod 4 will rotate from a vertical state to an inclined state, and the locking block 43 of the outer rod 41 will be located at the connection between the axial sliding groove 44 and the circumferential locking groove 45 of the inner rod 42. At this time, the maintenance personnel will rotate the outer rod 41 at a certain angle so that the locking block 43 can be inserted from the axial sliding groove 44 into the circumferential locking groove 45, thereby locking the inner rod 42 of the support rod 4 in the current extended state, and thus supporting the front end of drawer 1 through the support rod 4. After the maintenance is completed, the maintenance personnel will rotate the outer rod 41 in the opposite direction by a certain angle, so that the locking block 43 will retract from the circumferential locking groove 45 into the axial sliding groove 44. At this time, the inner rod 42 can move axially relative to the outer rod 41 and retract into the outer rod 41. Then the drawer 1 can be pushed into the cabinet.

[0023] Furthermore, the inner wall of the side panel 2 is provided with a guide rail 5, the guide rail 5 is provided with a guide groove, and the side wall of the drawer 1 is provided with a slide bar 6 that slides in cooperation with the guide groove.

[0024] The above solution is adopted to allow drawer 1 to slide inside the cabinet.

[0025] Furthermore, both the guide groove and the slide bar 6 have a T-shaped cross-section.

[0026] The above solution is adopted to improve the stability of the connection between the slider 6 and the guide rail 5.

[0027] Furthermore, the side plate 2 is provided with a heat dissipation structure, which includes a plurality of heat dissipation openings 21 arranged at equal intervals along the vertical direction.

[0028] The above solution is adopted: heat dissipation is achieved through a heat dissipation structure to cool the interior of the cabinet.

[0029] Furthermore, a rain shield 7 is provided on the outer side of the heat dissipation opening 21. The rain shield 7 is inclined and its high end is fixedly connected to the outer wall of the side plate 2.

[0030] The above solution is adopted: when the switch cabinet is used outdoors, the rain guard 7 can prevent rainwater from entering the cabinet through the heat dissipation structure, so as to avoid damaging the electrical equipment.

[0031] The above description is only a preferred embodiment of the present utility model. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the technical principles of the present utility model, and these improvements and modifications should also be considered within the protection scope of the present utility model.

Claims

1. A withdrawable high-voltage switchgear, comprising a cabinet and a drawer disposed inside the cabinet, the drawer being used to install electrical equipment, characterized in that: The cabinet includes two opposing side panels. A support structure is provided between the side panels and the drawer. The support structure includes a support base and a support rod. The support base is rotatably connected to the inner wall of the side panel via a pin. The support rod is a telescopic rod structure and includes an outer rod and an inner rod. The bottom end of the outer rod is rotatably connected to the top of the support base via a bearing. The bottom end of the inner rod extends into the interior of the outer rod, and the top end of the inner rod is rotatably connected to the front side wall of the drawer via a pin. A locking block is provided on the inner wall of the top end of the outer rod. An axial groove is provided on the outer wall of the inner rod to slide with the locking block. A circumferential groove is provided on the outer wall of the bottom end of the inner rod to communicate with the axial groove and to allow the locking block to engage.

2. The withdrawable high-voltage switchgear according to claim 1, characterized in that, The inner wall of the side panel is provided with a guide rail, and the guide rail is provided with a guide groove. The side wall of the drawer is provided with a slide bar that slides in cooperation with the guide groove.

3. The withdrawable high-voltage switchgear according to claim 2, characterized in that, Both the guide groove and the slide bar have a T-shaped cross-section.

4. The withdrawable high-voltage switchgear according to claim 1, characterized in that, The side plate is provided with a heat dissipation structure, which includes multiple heat dissipation openings arranged at equal intervals along the vertical direction.

5. The withdrawable high-voltage switchgear according to claim 4, characterized in that, A rain shield is provided on the outside of the heat dissipation opening. The rain shield is inclined and its high end is fixedly connected to the outer wall of the side plate.

Images