High-voltage switch cabinet with openable valve

Abstract

The utility model provides a high-voltage switch cabinet with an openable valve, which comprises a switch cabinet body, a handcart chamber is arranged in the switch cabinet body, an upper row of static contacts and a lower row of static contacts are arranged on the inner wall of the handcart chamber, the upper row of static contacts and the lower row of static contacts are covered and protected by baffle type valves, and each valve comprises a fixed frame and a turnover door plate. The fixed frame is provided with an operation opening which can be communicated with the position of the static contact in a penetrating mode, the turnover door plate is hinged to the operation opening to achieve opening and closing of the operation opening, a positioning structure for a user to fix the rotation angle of the turnover door plate is arranged between the fixed frame and the turnover door plate, and the turnover door plate is further provided with an operation structure which can be matched with an electricity testing rod. Compared with the prior art, an electricity testing handcart does not need to be independently arranged, electricity testing operation can be achieved only by simply operating the valve, the cost is reduced, meanwhile, the electricity testing process can be fully simplified, and the efficiency and convenience of overhaul operation are improved.

Description

Technical Field

[0001] This utility model relates to the technical field of high-voltage switchgear, and in particular to a high-voltage switchgear with an openable door. Background Technology

[0002] In the field of urban power distribution technology, medium-voltage switchgear is widely used in power systems due to its advantages of compact structure and high operational reliability. However, when performing operations such as monitoring, eliminating defects, and maintaining the high-voltage switchgear, the safety requirements for operating the energized parts are extremely high because the energized parts are hidden inside the valves.

[0003] Existing high-voltage switchgear maintenance systems are typically equipped with grounding test trolleys. The trolley's interior wall has two rows of stationary contacts. When the circuit breaker trolley is out of its working position, the two rows of stationary contact holes are covered and protected by two baffle-type valves. These two valves are controlled by valve mechanisms on the left and right sides of the cabinet via an upper and lower valve linkage mechanism: when the upper valve linkage mechanism moves downwards, it pulls the lower valve downwards simultaneously, exposing the lower stationary contact hole; when the lower valve linkage mechanism moves upwards, it pushes the upper valve upwards simultaneously, exposing the upper stationary contact hole.

[0004] The current maintenance procedure is as follows: First, the valve structure needs to be opened by pushing open the voltage testing trolley, and the voltage testing operation is carried out using the voltage testing rod. After confirming that there is no voltage, the voltage testing trolley is withdrawn, and then the grounding trolley is used to ground the stationary contact to ensure maintenance safety.

[0005] However, the voltage testing trolley only has the function of opening the valve, which means that two independent trolleys are required for each maintenance. Each trolley needs to be equipped with a special chassis for circuit breakers, which not only makes the equipment cost high, but also makes the overall structure of the trolley bulky. In actual operation, there are problems such as difficulty in transportation and cumbersome trolley replacement process, which seriously affect the efficiency and convenience of maintenance work.

[0006] In view of this, the inventor has designed a high-voltage switchgear with an openable door, which leads to this invention. Utility Model Content

[0007] To solve the above problems, the technical solution of this utility model is as follows:

[0008] A high-voltage switchgear with an operable door includes a switchgear body. The switchgear body contains a handcart compartment. The inner wall of the handcart compartment has two rows of stationary contacts, both rows covered and protected by a baffle-type door. Each door includes a fixed frame and a flip-up door panel. The fixed frame has a through-hole for connecting to the location of the stationary contacts. The flip-up door panel is hinged to the operating hole to open and close the operating hole. A positioning structure for fixing the rotation angle of the flip-up door panel is provided between the fixed frame and the flip-up door panel. The flip-up door panel also has an operating structure that can cooperate with a voltage tester.

[0009] Preferably, the upper and lower flip-up door panels flip in opposite directions and rotate toward each other.

[0010] Preferably, the operating port extends to one edge of the valve and forms an opening.

[0011] Preferably, the flip door panel has symmetrically arranged pivots on both sides, and the operating port on the side away from the opening and on its two side walls has pivot holes that cooperate with the pivots.

[0012] Preferably, the positioning structure includes a first positioning part disposed on the surface of the door and a second positioning part disposed on the surface of the flip door panel, wherein the first positioning part and the second positioning part are magnetically engaged.

[0013] Preferably, both the first positioning part and the second positioning part are elongated structures, and the sides of them that fit together form an inclined fitting surface.

[0014] Preferably, both bonding surfaces are provided with magnetic blocks that can attract each other.

[0015] Preferably, the operating structure is a sheet-like structure protruding from the bottom of the flip-up door panel, and the side of the operating structure away from the flip-up door panel is recessed inward to form an operating hole, which is used to cooperate with the end of the voltage tester.

[0016] Preferably, the operating structure is an operating hole formed by an inward recess along the bottom of the flip-up door panel, the operating hole being used to engage with the end of the voltage tester.

[0017] Preferably, symmetrical stop portions are formed on both sides of the bottom of the operating port, and the stop portions cooperate with the flip door panel to limit the further rotation of the flip door panel.

[0018] The beneficial effects of this utility model are as follows:

[0019] This invention designs the valve as a detachable structure with a movable, flip-up door panel. By using a voltage tester, the flip-up door panel can be flipped up to expose the operating opening inside the flip-up door panel. After the flip-up door panel is fixed by a positioning structure, the voltage tester can be used to test the static contact inside the operating opening. Compared with the prior art, this invention does not require a separate voltage tester trolley; voltage testing can be achieved simply by operating the valve. This reduces costs and simplifies the voltage testing process, improving the efficiency and convenience of maintenance work. Attached Figure Description

[0020] The accompanying drawings, which are provided to further illustrate the present invention and constitute a part of the present invention, illustrate exemplary embodiments of the present invention and are used to explain the present invention, but do not constitute an undue limitation of the present invention.

[0021] in:

[0022] Figure 1 This is a schematic diagram of the overall structure of Embodiment 1 of this utility model;

[0023] Figure 2 This is a partial structural diagram highlighting the handcart compartment in Embodiment 1 of this utility model;

[0024] Figure 3 This is a partial structural diagram highlighting the valve in Embodiment 1 of this utility model;

[0025] Figure 4 yes Figure 3 Schematic diagram of the cross-sectional structure along line A-A';

[0026] Figure 5 This is a schematic diagram of the rear structure of the door in Embodiment 1 of this utility model;

[0027] Figure 6 This is a partial structural diagram of the valve in Embodiment 2 of this utility model.

[0028] Label Explanation:

[0029] 100. Switchgear body; 110. Handcart compartment; 120. Handcart linkage mechanism; 200. Door; 210. Fixed frame; 220. Flip-up door panel; 230. Operating port; 240. Opening; 250. Stop; 300. Positioning structure; 310. First positioning part; 320. Second positioning part; 330. Magnetic block; 400. Operating structure; 410. Operating hole; 420. Arc-shaped guide wall; 430. Guide channel. Detailed Implementation

[0030] To make the technical problem to be solved, the technical solution, and the beneficial effects of this utility model clearer and more understandable, 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 this utility model and are not intended to limit this utility model. Example 1

[0031] Please see Figures 1 to 5 This is a high-voltage switchgear with an openable door, which is the preferred embodiment of the present utility model. It includes a switchgear body 100, a handcart compartment 110 inside the switchgear body 100, and two rows of stationary contacts (not shown in the figure) on the inner wall of the handcart compartment 110. Both rows of stationary contacts are covered and protected by a baffle-type door 200.

[0032] In this embodiment, the upper row of stationary contacts are busbar-side contacts, and the lower row of stationary contacts are outgoing-side contacts. The valve 200 is controlled to open by the handcart linkage mechanism 120 on both sides. When the corresponding handcart is pushed into the handcart compartment 110, the triggering structure on both sides of the handcart cooperates with the handcart linkage mechanism 120, so that the upper valve 200 and the lower valve 200 slide open in the vertical direction respectively. This is the existing structure of the valve 200 in the handcart compartment 110, which will not be described in detail here.

[0033] like Figure 2 , 3 As shown in Figure 4, based on this, the valve 200 is generally square and includes a fixed frame 210 and a flip door panel 220. The fixed frame 210 is square, and one of its upper and lower sides is recessed inward to form a through-type operating opening 230. The operating opening 230 is directly opposite the position of the stationary contact behind it. The flip door panel 220 is hinged to the operating opening 230 to realize the opening and closing of the operating opening 230. A positioning structure 300 for the user to fix the rotation angle of the flip door panel 220 is provided between the fixed frame 210 and the flip door panel 220. The flip door panel 220 is also provided with an operating structure 400 that can be used with a voltage tester.

[0034] Specifically, such as Figure 3 , 4 As shown, the operating port 230 extends to one edge of the door 200 and forms an opening 240. The two side walls of the flip door panel 220 are symmetrically provided with pivots (not shown in the figure) at their upper ends. The side of the operating port 230 away from the opening 240 and its two side walls are provided with pivot holes (not shown in the figure) that cooperate with the pivots.

[0035] Furthermore, in this embodiment, the operation ports 230 of the upper and lower valves 200 are arranged in opposite directions, that is, the opening 240 of the upper valve 200 faces downward and the opening 240 of the lower valve 200 faces upward.

[0036] Therefore, the operation port 230 is designed to extend to the edge of the valve 200, forming an operation port 230 structure with an opening 240. This allows the operation port 230 to be fully exposed after the flip door 220 is opened, making it convenient for the operator to perform voltage testing on the inner stationary contact. This avoids the operation port 230, which is not opened to the edge, forming a structure that obstructs the operation of the voltage tester.

[0037] Preferred, such as Figure 2 As shown, the upper and lower flip-up door panels 220 flip in opposite directions and rotate toward each other.

[0038] In this embodiment, the upper flip-up door panel 220 can be folded upwards, while the lower flip-up door panel 220 can be folded downwards. Since the handcart compartment 110 is generally located in the middle of the switch cabinet, the operator's operating height is generally also at this height. Through the flip-up direction design of the aforementioned flip-up door panel 220, the operator can obtain a larger and more convenient operating space, avoiding the flip-up door panel 220 from obstructing the voltage testing process after flipping (for example, if the flip-up door panel 220 of the upper flap 200 is folded downwards, it will prevent the operator from performing voltage testing on the stationary contacts using a voltage tester).

[0039] Preferred, such as Figure 3 , 4 As shown, the positioning structure 300 includes a first positioning part 310 disposed on the surface of the door 200 and a second positioning part 320 disposed on the surface of the flip door panel 220, and the first positioning part 310 and the second positioning part 320 are magnetically engaged.

[0040] Furthermore, both the first positioning part 310 and the second positioning part 320 are elongated structures, and their mating surfaces form inclined mating surfaces (not shown in the figure). Both mating surfaces are provided with magnetic blocks 330 that can magnetically attract each other. In this embodiment, the magnetic block 330 is a circular magnetic sheet.

[0041] Thus, by using the inclined bonding surfaces, the flip door panel 220 can be flipped up or down to form a specific angle with the door 200. At this time, the two bonding surfaces are attracted to each other by the magnetic blocks 330 on them until they are completely bonded, fixing the angle of the flip door panel 220 flipping up or down, and avoiding subsequent interference with the operator's voltage testing operation on the stationary contact using a voltage tester.

[0042] Preferred, such as Figure 3 , 5 As shown, the operating structure 400 is a sheet-like structure protruding from the bottom of the flip door panel 220. The side of the operating structure 400 away from the flip door panel 220 is recessed inward to form an operating hole 410, which is used to cooperate with the end of the test rod.

[0043] In this embodiment, the operating hole 410 is a circular hole. In the prior art, the test rod generally has a spherical contact head. The diameter of the circular hole is slightly smaller than that of the spherical contact head. The circular hole extends integrally to the edge of the operating structure 400 in a direction away from the flip door panel 220, forming two symmetrical arc-shaped guide walls 420. The two arc-shaped guide walls 420 enclose each other to form a guide channel 430.

[0044] Therefore, when the operator uses the voltage tester, the spherical contact head is slid into the operating hole 410 along the guide channel 430, so that the contact head is stuck in the operating hole 410. Then, by pulling the voltage tester, the flip door panel 220 can be lifted up and magnetically fixed to the positioning structure 300 on the door 200, forming a fixed angle for opening, which facilitates the subsequent use of the voltage tester for voltage testing.

[0045] In addition to using existing voltage testers, a special operating tool can be designed to operate the operating structure 400. The operating tool may include a straight rod-shaped gripping part and a ball-shaped locking part (not shown in the figure) located at one end of the gripping part. The ball-shaped locking part engages with the operating port 230.

[0046] Preferred, such as Figure 4 , 5 As shown, stop portions 250 are symmetrically formed on both sides of the bottom of the operation port 230. The stop portions 250 are matched with the flip door panel 220 to limit the further rotation of the flip door panel 220.

[0047] In this embodiment, the stop part 250 is sheet-shaped and its thickness is less than the depth of the operating opening 230. The end face of the stop part 250 is flush with the back side of the valve 200 so that the end face of its other side extends into the inside of the operating opening 230. The back side of the flip door panel 220 is correspondingly provided with stop grooves (not shown in the figure) that fit into the stop part 250. Thus, when the flip door panel 220 is in the closed state, its end face is flush with the end face of the fixed frame 210, and the stop part 250 restricts it from folding further inward, thus maintaining its protection function for the stationary contact. Example 2

[0048] like Figure 6 As shown, this is a high-voltage switchgear with an openable door as an embodiment 2 of the present invention. The difference from embodiment 1 is that the operating structure 400 is an operating hole 410 formed by recessing inward along the bottom of the flip door panel 220. The operating hole 410 is used to cooperate with the end of the voltage tester.

[0049] With this design, the operating structure 400 and the flip door panel 220 are integrated into one unit, requiring no additional structure. This minimizes the modification steps required for the flip door panel 220, which helps to further reduce costs.

[0050] The beneficial effects of this utility model are as follows:

[0051] This invention designs the valve 200 as a detachable structure with a movable flip-up door panel 220. By using a voltage tester, the flip-up door panel 220 can be flipped up to expose the operating opening 230 inside the flip-up door panel 220. After the flip-up door panel 220 is fixed by the positioning structure 300, the voltage tester can be used to test the static contact inside the operating opening 230. Compared with the prior art, this invention does not require a separate voltage tester trolley. The voltage test can be achieved simply by operating the valve 200. This reduces costs and simplifies the voltage test process, improving the efficiency and convenience of maintenance work.

[0052] The present invention has been described above with reference to the accompanying drawings. Obviously, the specific implementation of the present invention is not limited to the above-described manner. Any non-substantial improvements made using the inventive concept and technical solution of the present invention, or the direct application of the inventive concept and technical solution to other situations without modification, are all within the protection scope of the present invention.

Claims

1. A high-voltage switchgear with an openable door, comprising a switchgear body (100), wherein a handcart compartment (110) is provided inside the switchgear body (100), and the inner wall of the handcart compartment (110) is provided with two rows of stationary contacts, both rows of stationary contacts being covered and protected by a baffle-type door (200), characterized in that, The valve (200) includes a fixed frame (210) and a flip-up door panel (220). The fixed frame (210) has an operating opening (230) through which the position of the stationary contact can be connected. The flip-up door panel (220) is hinged to the operating opening (230) to realize the opening and closing of the operating opening (230). A positioning structure (300) for fixing the rotation angle of the flip-up door panel (220) is provided between the fixed frame (210) and the flip-up door panel (220). The flip-up door panel (220) is also provided with an operating structure (400) that can be used with a voltage tester.

2. The high-voltage switchgear with an openable door according to claim 1, characterized in that, The two flip-up door panels (220) described above and below flip in opposite directions and rotate toward each other.

3. A high-voltage switchgear with an openable door according to claim 1, characterized in that, The operating port (230) extends to one edge of the valve (200) and forms an opening (240).

4. A high-voltage switchgear with an openable door according to claim 3, characterized in that, The flip-up door panel (220) has symmetrical pivots on both sides, and the operation port (230) is located on the side away from the opening (240) and has pivot holes on both sides of its wall that cooperate with the pivots.

5. A high-voltage switchgear with an openable valve according to claim 1, characterized in that, The positioning structure (300) includes a first positioning part (310) disposed on the surface of the door (200) and a second positioning part (320) disposed on the surface of the flip door panel (220), wherein the first positioning part (310) and the second positioning part (320) are magnetically attracted to each other.

6. A high-voltage switchgear with an openable door according to claim 5, characterized in that, Both the first positioning part (310) and the second positioning part (320) are elongated structures, and their surfaces that fit together form an inclined fitting surface.

7. A high-voltage switchgear with an openable door according to claim 6, characterized in that, Both of the aforementioned mating surfaces are provided with magnetic blocks (330) that can attract each other.

8. A high-voltage switchgear with an openable door according to claim 1, characterized in that, The operating structure (400) is a sheet-like structure protruding from the bottom of the flip-up door panel (220). The side of the operating structure (400) away from the flip-up door panel (220) is recessed inward to form an operating hole (410). The operating hole (410) is used to cooperate with the end of the test rod.

9. A high-voltage switchgear with an openable door according to claim 1, characterized in that, The operating structure (400) is an operating hole (410) formed by recessing inward along the bottom of the flip-up door panel (220), and the operating hole (410) is used to cooperate with the end of the test rod.

10. A high-voltage switchgear with an openable door according to claim 1, characterized in that, The bottom sides of the operation port (230) are symmetrically formed with stop portions (250), which are matched with the flip door panel (220) to limit the further rotation of the flip door panel (220).

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