High voltage AC metal enclosed ring network switchgear

Abstract

The present invention discloses a high-voltage AC metal-enclosed ring network switch device, which relates to the technical field of high-voltage switch devices. It includes a base, a top cover and four side panels. Four slide grooves arranged in a ring array are opened on the top of the base, and one end of the slide groove is exposed along the side wall of the base. The side panel is slidably engaged in the slide groove. A self-locking component is provided inside the base. The self-locking component is used to control the state of the side panel in the slide groove. A plurality of support rods are fixedly connected to the top of the base, and a support platform is fixedly connected to the top of the support rod. Two bearing plates are symmetrically arranged on the support platform. An opening and closing component is provided between the two bearing plates and the support platform. A transmission gear is fixedly connected to the top of the base, and a plurality of transmission teeth are fixedly connected to the inner peripheral wall of each side panel. The transmission teeth are meshed with the transmission gear. The present invention has a convenient maintenance method for the high-voltage AC metal-enclosed ring network switch device and a strong heat dissipation effect.

Description

Technical Field

[0001] The present invention relates to the technical field of high-voltage switchgear, in particular to high-voltage AC metal-enclosed ring network switchgear. Background Art

[0002] As we all know, my country's current urban and rural power supply mainly adopts the high-voltage ring network mode for power supply. In the high-voltage ring network power supply system, the control switch equipment of the high-voltage part currently used is mainly the high-voltage ring network switch equipment, which is mainly composed of a control cabinet and high-voltage circuit breakers, high-voltage disconnectors and many circuit monitoring and control electrical components installed inside the control cabinet. The current high-voltage ring network switch equipment has the characteristics of stable operation and low cost, and its application volume is very large.

[0003] The Chinese patent with publication number CN111371034B discloses a high-voltage AC metal-enclosed ring network switch device, which is installed by inserting a fixing plate into a mounting seat and fixed by a fixing rod. The fixing effect of the device is improved by the engagement of the upper fixing teeth and the lower fixing teeth. At the same time, when problems occur in the components inside the device, the mounting plate is rotated to facilitate the inspection and replacement of the components. The overall operation is simple and convenient, the installation efficiency is high, and the fixing effect is good, which is convenient for later maintenance and has strong practicality. It includes a box body and a box door; it also includes a partition, two sets of slides, two sets of slides, two sets of fixing frames, two sets of rotating shafts, two sets of mounting plates, a circuit breaker module, an electrical control module, a base, two sets of mounting seats, two sets of fixing plates, two sets of fixing rods, two sets of reset boxes, two sets of reset springs and two sets of limit plates. The partition is fixed inside the box body and divides the inside of the box body into a left cavity and a right cavity.

[0004] However, the above patent still has the following problems: the interior of the box is divided into a left cavity and a right cavity, and heat is dissipated separately through the left cavity and the right cavity. However, such a design will cause the space inside the box to be occupied too much, so that when the staff performs maintenance, there is a lack of operating space inside the box, which makes the maintenance work difficult. In addition, the switch components on the mounting plate have a certain weight. When rotating the mounting plate for maintenance, the maintenance personnel need to overcome gravity and maintain the flip angle of the mounting plate, which is cumbersome, time-consuming and labor-intensive. Summary of the Invention

[0005] The object of the present invention is to provide a high-voltage AC metal-enclosed ring network switchgear to solve the problems raised in the above-mentioned background technology.

[0006] The technical solution of the present invention is: a high-voltage AC metal-enclosed ring network switchgear includes a base, a top cover and four side panels, the top of the base is provided with four slide grooves arranged in a ring array, and one end of the slide groove is exposed along the side wall of the base, the side panel is slidably engaged in the slide groove, a self-locking assembly is provided inside the base, the self-locking assembly is used to control the state of the side panel in the slide groove, a plurality of support rods are fixedly connected to the top of the base, the top of the support rods is fixedly connected to the support platform, two bearing plates are symmetrically provided on the support platform, an opening and closing assembly is provided between the two bearing plates and the support platform, a transmission gear is fixedly connected to the top of the base, a plurality of transmission teeth are fixedly connected to the inner peripheral wall of each side panel, the transmission teeth are meshed with the transmission gear, a connecting shaft is fixedly connected to the middle of the transmission gear, the connecting shaft passes through the support platform, and a linkage gear is fixedly connected to the end of the connecting shaft, the linkage gear is connected to the opening and closing assembly, and the opening and closing assembly is used to control the translation of the two bearing plates, and the top cover is provided above the side panel.

[0007] Preferably, sealing plates are fixedly connected to the four corners of the top of the base, and outer clamping plates are fixedly connected to the outer walls on both sides of the sealing plate, and there is space for the side plates to pass through between the inner walls of the outer clamping plates and the side walls of the sealing plate.

[0008] Preferably, the top of the sealing plate has an insertion section, and the four corners of the bottom of the top cover are provided with insertion grooves, the insertion section is embedded and connected with the insertion groove, and four sealing strips arranged in a circular array are fixedly connected to the bottom of the top cover, and the bottom of the sealing strip is in contact with the top of the side panel.

[0009] Preferably, the opening and closing assembly includes two tracks, which are staggered on the support platform. A slide is slidably connected to each of the two tracks. The slide is composed of a rack section and a support section. The rack section is meshed with the linkage gear, and the top of the support section is fixedly connected to the bottom of the supporting plate.

[0010] Preferably, an observation window is provided on one of the side panels.

[0011] Preferably, the bottom of the top cover is fixedly connected to a first mounting plate, and two second mounting plates are symmetrically fixedly connected to both sides of the bottom of the top cover, a dual-axis motor is fixedly connected to the first mounting plate, and the output shafts at both ends of the dual-axis motor are fixedly connected to a screw rod, and the screw rod is rotatably connected to the second mounting plate, and a screw rod sleeve is threadedly connected to the screw rod, and a limiting plate is fixedly connected to the top of the screw rod sleeve, and two cold air grooves are symmetrically opened in the top cover, and the limiting plates are inserted into the cold air grooves, and the ends of the limiting plates are fixedly connected to fans, and an air inlet is opened on the top of each of the cold air grooves.

[0012] Preferably, a spiral conduit is provided in each of the two cold air troughs, and the two conduits are interconnected, wherein one end of one of the conduits is fixedly connected to a water inlet pipe, and the other end of the other conduit is fixedly connected to a water outlet pipe.

[0013] Preferably, the top of the top cover is fixedly connected to a ring wall, a dust cover is nested and connected to the ring wall, and a plurality of dust holes are provided on the four side walls of the dust cover.

[0014] Preferably, the self-locking assembly includes four linkage plates arranged inside the base, a connecting plate is fixedly connected between two adjacent linkage plates, a plurality of springs are fixedly connected to the bottom of the linkage plate, the springs are fixedly connected to the inner cavity wall of the base, two pressure plates are fixedly connected to the top two sides of the linkage plate, the pressure plates are inserted into the slide groove, two pressure grooves are symmetrically provided at the bottom of the side plate, the pressure plates are clamped and connected to the pressure grooves, and a pedal is fixedly connected to one of the linkage plates.

[0015] Preferably, a movable groove is provided on the base, the pedal is located in the movable groove, and a sealing plate is rotatably connected to the movable groove.

[0016] The present invention provides a high-voltage AC metal-enclosed ring network switchgear through improvements, which has the following improvements and advantages compared with the prior art:

[0017] First, in the present invention, the switch accessories are installed in two batches in the bearing plate. When performing maintenance work, one of the side panels is pulled to move horizontally along the slide groove, so that the side panel drives the transmission gear to rotate through the transmission teeth. The rotation of the transmission gear can drive the remaining three side panels to slide horizontally synchronously, thereby opening the four sides above the base, increasing the exposed area, and facilitating maintenance work.

[0018] Secondly, in the present invention, when the side panels are in the closed state, the two supporting plates are in a separated state, and there is enough space between them for air circulation, thereby improving the heat dissipation efficiency. When the side panels are pulled open, the transmission gear drives the connecting shaft and the linkage gear to rotate synchronously, thereby the linkage gear drives the opening and closing assembly. Under the action of the opening and closing assembly, the two supporting plates are brought closer, thereby freeing up more space above the base, making it convenient for maintenance personnel to enter and facilitate maintenance work.

[0019] Third: In the present invention, the gaps between adjacent side panels are sealed by the right-angle walls of the sealing plate to ensure the sealing between the four side panels, and the side panels pass through the outer card plate, which can improve the stability of the side panels, and the top cover is connected to the sealing plate through the clamping effect of the insertion groove and the insertion section. At the same time, the top surface of the side panel is sealed by the sealing strip, thereby effectively ensuring the sealing between the side panel and the top cover, and facilitating the disassembly and assembly of the top cover.

[0020] Fourthly, the dual-axis motor in the present invention rotates intermittently in both directions, thereby driving the two screws to rotate. The rotation of the screw drives the screw sleeve to move back and forth horizontally, thereby driving the fan to move synchronously. The fan dissipates heat for the switch accessories below. As the fan moves back and forth horizontally, the uniformity of heat dissipation can be improved. At this time, the two supporting plates are in a separated state, so that the space between the two supporting plates can provide sufficient space for air circulation, further improving the efficiency of heat dissipation.

[0021] Fifth: In the present invention, the water inlet pipe and the water outlet pipe can be connected to external cooling water, and the cooling water is preferably tap water, so that the water inlet pipe and the water outlet pipe are connected to the municipal tap water pipe system, so that the tap water can flow through the conduit, thereby reducing the temperature in the cold air trough. At this time, with the help of the fan, the low-temperature air in the cold air trough can be sent to the switch accessories below, so that the hot air is discharged from the heat dissipation holes opened under the base, thereby improving the heat dissipation effect of the switch accessories. The municipal tap water pipe system is widely distributed on municipal roads, which is convenient for introduction into the conduit and will not cause pollution to the tap water. In winter, when the tap water passes through the conduit, it can effectively utilize the heat generated by the switch accessories to provide temperature for the tap water, improve energy utilization, and be convenient and environmentally friendly.

[0022] Sixth: In the present invention, under normal conditions, the linkage plate drives the pressure plate to be squeezed upward under the action of the spring, so that the pressure plate is stuck in the pressure groove, increasing the stability of the side plate in the slide groove. When maintenance is required, the maintenance personnel step on the pedal to make multiple linkage plates move down at the same time, so that the pressure plate is disengaged from the pressure groove, ensuring that the side panel can be opened normally. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In order to more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the specific embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0024] Figure 1 It is an exploded schematic diagram of the overall structure of the present invention;

[0025] Figure 2 This is a schematic diagram of the three-dimensional structure of the side panels of the present invention when they are opened on the base;

[0026] Figure 3 It is a top view schematic diagram of two supporting plates folded together in the present invention;

[0027] Figure 4It is a cross-sectional schematic diagram of the present invention when two supporting plates are closed;

[0028] Figure 5 It is a cross-sectional schematic diagram of the two supporting plates when separated in the present invention;

[0029] Figure 6 This is a schematic diagram of the three-dimensional structure of the top cover in the present invention;

[0030] Figure 7 It is a schematic cross-sectional view of the top cover in the present invention;

[0031] Figure 8 for Figure 1 A magnified view of point A in the figure;

[0032] Figure 9 for Figure 6 Enlarged view of point B in FIG.

[0033] Figure 10 It is a schematic cross-sectional view of the base in the present invention;

[0034] Figure 11 for Figure 1 Enlarged view of point C in the figure.

[0035] In the figure: 1. Base; 101. Sealing plate; 102. External card plate; 103. Insertion section; 104. Insertion slot; 105. Sealing strip; 2. Top cover; 3. Side panel; 301. Slide; 302. Support rod; 303. Support platform; 304. Loading plate; 305. Transmission gear; 306. Transmission gear; 307. Linkage gear; 4. Track; 401. Rack section; 402. Support section; 5. Observation window; 6. First mounting plate; 601. Second mounting plate; 602, dual-axis motor; 603, screw; 604, screw sleeve; 605, limit plate; 606, cooling trough; 607, fan; 608, air inlet; 609, duct; 610, water inlet pipe; 611, water outlet pipe; 7, annular wall; 701, dust cover; 702, dust hole; 8, linkage plate; 801, connecting plate; 802, spring; 803, pressure plate; 804, pressure groove; 805, pedal; 806, movable groove. DETAILED DESCRIPTION

[0036] The technical solution of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0037] The components of the embodiments of the present invention generally described and shown in the drawings herein may be arranged and designed in a variety of different configurations. Therefore, the following detailed description of the embodiments of the invention provided in the drawings is not intended to limit the scope of the claimed invention, but merely represents selected embodiments of the invention.

[0038] Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making any creative work shall fall within the scope of protection of the present invention.

[0039] In the description of the present invention, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings and are intended solely to facilitate and simplify the description of the present invention. They are not intended to indicate or imply that the devices or components referred to must have, be constructed, or operate in a specific orientation, and therefore should not be construed as limitations on the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0040] In the description of the present invention, it should be noted that, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "connected" should be understood in a broad sense. For example, they may refer to fixed, detachable, or integral connections; mechanical or electrical connections; direct or indirect connections through an intermediate medium; and internal communication between two components. Those skilled in the art will understand the specific meanings of the above terms in the present invention based on the specific circumstances.

[0041] like Figures 1-11 As shown, an embodiment of the present invention provides a high-voltage AC metal-enclosed ring network switch device, including a base 1, a top cover 2 and four side panels 3. Four slide grooves 301 arranged in a ring array are opened on the top of the base 1, and one end of the slide groove 301 is exposed along the side wall of the base 1 to provide a sliding space for the side panel 3 to be opened. The side panel 3 is slidably engaged in the slide groove 301. A self-locking component is provided inside the base 1. The self-locking component is used to control the state of the side panel 3 in the slide groove 301. A plurality of support rods 302 are fixedly connected to the top of the support rods 302. A support platform 303 is fixedly connected to the top of the support rods 302. The support platform 303 Two supporting plates 304 are symmetrically arranged on the top, and an opening and closing assembly is arranged between the two supporting plates 304 and the support platform 303. A transmission gear 305 is fixedly connected to the top of the base 1, and a plurality of transmission teeth 306 are fixedly connected to the inner wall of each side plate 3. The transmission teeth 306 are meshed with the transmission gear 305. A connecting shaft is fixedly connected to the middle of the transmission gear 305, and the connecting shaft passes through the support platform 303. A linkage gear 307 is fixedly connected to the end of the connecting shaft. The linkage gear 307 is connected to the opening and closing assembly. The opening and closing assembly is used to control the two supporting plates 304 to translate. The top cover 2 is arranged above the side plate 3.

[0042] Specifically, the switch accessories are installed in two batches on the bearing plate 304. When performing maintenance work, one of the side panels 3 is pulled to move horizontally along the slide groove 301. The side panel 3 drives the transmission gear 305 to rotate through the transmission teeth 306. The rotation of the transmission gear 305 can drive the other three side panels 3 to slide horizontally synchronously, thereby opening the four sides above the base 1, increasing the exposed area and facilitating maintenance work.

[0043] Among them, when the side panel 3 is in the closed state, the two supporting plates 304 are in a separated state, and there is enough space between them for air circulation to improve the heat dissipation efficiency. When the side panel 3 is pulled open, the transmission gear 305 will drive the connecting shaft and the linkage gear 307 to rotate synchronously, so that the linkage gear 307 drives the opening and closing component. Under the action of the opening and closing component, the two supporting plates 304 are brought closer, so that more space can be freed up above the base 1, which is convenient for maintenance personnel to enter and facilitate maintenance work.

[0044] The four corners of the top of the base 1 are fixedly connected with sealing plates 101, and the outer walls on both sides of the sealing plate 101 are fixedly connected with outer clamping plates 102. There is a space between the inner wall of the outer clamping plate 102 and the side wall of the sealing plate 101 for the side plate 3 to pass through.

[0045] The top of the sealing plate 101 has an insertion section 103, and the four corners of the bottom of the top cover 2 are provided with insertion grooves 104. The insertion section 103 is embedded and connected with the insertion groove 104, and four sealing strips 105 arranged in a circular array are fixedly connected to the bottom of the top cover 2, and the bottom of the sealing strip 105 is in contact with the top of the side panel 3.

[0046] Specifically: the gaps between adjacent side panels 3 are sealed by the right-angle wall of the sealing plate 101 to ensure the sealing between the four side panels 3, and the side panels 3 pass through the outer card plate 102. The stability of the side panels 3 can be improved by the outer card plate 102, and the top cover 2 is connected to the sealing plate 101 through the clamping effect of the insertion groove 104 and the insertion section 103. At the same time, the top surface of the side panel 3 is sealed by the sealing strip 105, thereby effectively ensuring the sealing between the side panel 3 and the top cover 2, and facilitating the disassembly and assembly of the top cover 2.

[0047] The opening and closing assembly includes two rails 4, which are staggered on the support platform 303. Both rails 4 are slidably connected with a slide, which is composed of a rack segment 401 and a support segment 402. The rack segment 401 is meshed with the linkage gear 307, and the top of the support segment 402 is fixedly connected to the bottom of the supporting plate 304.

[0048] Specific: See Figure 3 、 Figure 4 as well as Figure 5The linkage gear 307 rotates, driving the rack segment 401 to move horizontally, thereby driving the support segment 402 to move synchronously, and the support segment 402 drives the top bearing plate 304 to move synchronously, so that through the rotation of the linkage gear 307, the two bearing plates 304 can be driven to move closer or apart.

[0049] An observation window 5 is provided on one of the side panels 3 , and the observation window 5 allows maintenance personnel to visually observe the operating conditions inside the side panel 3 .

[0050] A first mounting plate 6 is fixedly connected to the bottom of the top cover 2, and two second mounting plates 601 are symmetrically fixedly connected to the two sides of the bottom of the top cover 2. A dual-axis motor 602 is fixedly connected to the first mounting plate 6, and the output shafts at both ends of the dual-axis motor 602 are fixedly connected to a screw rod 603. The screw rod 603 is rotatably connected to the second mounting plate 601. A screw rod sleeve 604 is threadedly connected to the screw rod 603, and a limiting plate 605 is fixedly connected to the top of the screw rod sleeve 604. Two cold air grooves 606 are symmetrically opened in the top cover 2, and the limiting plate 605 is inserted into the cold air groove 606. A fan 607 is fixedly connected to the end of the limiting plate 605, and an air inlet 608 is opened at the top of each cold air groove 606.

[0051] A spiral conduit 609 is provided in each of the two cold air slots 606 , and the two conduits 609 are interconnected, one end of one conduit 609 is fixedly connected to a water inlet pipe 610 , and the other end of the other conduit 609 is fixedly connected to a water outlet pipe 611 .

[0052] The top of the top cover 2 is fixedly connected to a ring wall 7 , and a dust cover 701 is nested and connected to the ring wall 7 . A plurality of dust holes 702 are provided on the four side walls of the dust cover 701 .

[0053] Specifically: when the temperature is high, the dual-axis motor 602 rotates bidirectionally intermittently, thereby driving the two screw rods 603 to rotate. The rotation of the screw rod 603 drives the screw rod sleeve 604 to move horizontally back and forth, thereby driving the fan 607 to move synchronously. The fan 607 dissipates heat for the switch accessories below. As the fan 607 moves horizontally back and forth, the uniformity of heat dissipation can be improved. At this time, the two supporting plates 304 are in a separated state, so that the space between the two supporting plates 304 can provide sufficient space for air circulation, further improving the efficiency of heat dissipation. Here, a temperature sensor is used to detect the temperature of the switch accessories in real time.

[0054] The water inlet pipe 610 and the water outlet pipe 611 can be connected to external cooling water, preferably tap water, so that the water inlet pipe 610 and the water outlet pipe 611 are connected to the municipal tap water pipeline system, allowing tap water to flow through the conduit 609, thereby reducing the temperature in the cold air tank 606. At this time, the fan 607 can be used to send the low-temperature air in the cold air tank 606 to the switch accessories below, so that the hot air is discharged from the heat dissipation holes opened at the bottom of the base 1, thereby improving the heat dissipation effect of the switch accessories.

[0055] It is understandable that the municipal tap water pipeline system is widely distributed on municipal roads, which makes it easy to introduce it into conduit 609 without causing pollution to the tap water. In winter, when the tap water passes through conduit 609, it can effectively utilize the heat generated by the switch accessories to provide temperature for the tap water, improve energy utilization, be convenient for the people, and be environmentally friendly.

[0056] The self-locking assembly includes four linkage plates 8 arranged inside the base 1, a connecting plate 801 is fixedly connected between two adjacent linkage plates 8, a plurality of springs 802 are fixedly connected to the bottom of the linkage plate 8, the springs 802 are fixedly connected to the inner cavity wall of the base 1, two pressure plates 803 are fixedly connected to the top two sides of the linkage plate 8, the pressure plate 803 is inserted into the slide groove 301, and two pressure grooves 804 are symmetrically provided at the bottom of the side plate 3, the pressure plate 803 is snap-connected to the pressure groove 804, and a pedal 805 is fixedly connected to one of the linkage plates 8.

[0057] A movable groove 806 is provided on the base 1 , the pedal 805 is located in the movable groove 806 , and a sealing plate is rotatably connected to the movable groove 806 .

[0058] Specifically: Under normal conditions, the linkage plate 8 will drive the pressure plate 803 to be squeezed upward under the action of the spring 802, so that the pressure plate 803 is stuck in the pressure groove 804, increasing the stability of the side panel 3 in the slide groove 301. When maintenance is required, the maintenance personnel step on the pedal 805, so that multiple linkage plates 8 move downward at the same time, so that the pressure plate 803 is disengaged from the pressure groove 804, ensuring that the side panel 3 can be opened normally.

[0059] When the side panels 3 are in the closed state, the two supporting plates 304 are in a separated state, and there is enough space between them for air circulation, thereby improving heat dissipation efficiency. When the side panels 3 are pulled apart, the transmission gear 305 drives the connecting shaft and the linkage gear 307 to rotate synchronously, thereby driving the opening and closing assembly. Under the action of the opening and closing assembly, the two supporting plates 304 are brought together, thereby freeing up more space above the base 1, making it convenient for maintenance personnel to enter and facilitate maintenance work.

[0060] When the temperature of the switch accessories is high, the dual-axis motor 602 intermittently rotates in both directions, thereby driving the two screw rods 603 to rotate. The rotation of the screw rods 603 drives the screw rod sleeve 604 to move horizontally back and forth, thereby driving the fan 607 to move synchronously. The fan 607 dissipates heat from the switch accessories below. As the fan 607 moves horizontally back and forth, the uniformity of heat dissipation can be improved. At this time, the two supporting plates 304 are in a separated state, so that the space between the two supporting plates 304 can provide sufficient space for air circulation, further improving the efficiency of heat dissipation.

[0061] The water inlet pipe 610 and the water outlet pipe 611 can be connected to external cooling water, and the cooling water is preferably tap water, so that the water inlet pipe 610 and the water outlet pipe 611 are connected to the municipal tap water pipeline system, so that the tap water can flow through the conduit 609, thereby reducing the temperature in the cold air groove 606. At this time, in conjunction with the fan 607, the low-temperature air in the cold air groove 606 can be sent to the switch accessories below, so that the hot air is discharged from the heat dissipation holes opened below the base 1, thereby improving the heat dissipation effect of the switch accessories.

[0062] The above description is intended to enable one skilled in the art to implement or use the present invention. Various modifications to these embodiments will be readily apparent to one skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention is not limited to the embodiments shown herein but is intended to conform to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A high-voltage AC metal-enclosed ring network switchgear, comprising a base (1), a top cover (2), and four side panels (3), characterized in that: The top of the base (1) is provided with four slide grooves (301) arranged in a circular array, and one end of the slide groove (301) is exposed along the side wall of the base (1), and the side plate (3) is slidably engaged in the slide groove (301). A self-locking component is provided inside the base (1), and the self-locking component is used to control the state of the side plate (3) in the slide groove (301). The top of the base (1) is fixedly connected with a plurality of support rods (302), and the top of the support rods (302) is fixedly connected with a support platform (303). Two bearing plates (304) are symmetrically provided on the support platform (303), and the two bearing plates (304) are connected to the support platform (303). 03), an opening and closing assembly is provided between the base (1), a transmission gear (305) is fixedly connected to the top of the base (1), a plurality of transmission teeth (306) are fixedly connected to the inner peripheral wall of each side plate (3), the transmission teeth (306) are meshed with the transmission gear (305), a connecting shaft is fixedly connected to the middle of the transmission gear (305), the connecting shaft passes through the support platform (303), and a linkage gear (307) is fixedly connected to the end of the connecting shaft, the linkage gear (307) is connected to the opening and closing assembly, and the opening and closing assembly is used to control the translation of the two bearing plates (304), and the top cover (2) is provided above the side plate (3); The four corners of the top of the base (1) are fixedly connected to sealing plates (101), and the outer walls on both sides of the sealing plate (101) are fixedly connected to outer clamping plates (102), and there is a space between the inner wall of the outer clamping plate (102) and the side wall of the sealing plate (101) for the side plate (3) to pass through; The top of the sealing plate (101) is provided with an insertion section (103), and the four corners of the bottom of the top cover (2) are provided with insertion grooves (104), the insertion section (103) is embedded and connected with the insertion grooves (104), and the bottom of the top cover (2) is fixedly connected with four sealing strips (105) arranged in a ring array, and the bottom of the sealing strip (105) is in contact with the top of the side plate (3).

2. The high-voltage AC metal-enclosed ring network switchgear according to claim 1, characterized in that: The opening and closing assembly comprises two rails (4), the two rails (4) being staggeredly arranged on the support platform (303), and a slide being slidably connected to each of the two rails (4), the slide being composed of a rack section (401) and a support section (402), the rack section (401) being meshedly connected to the linkage gear (307), and the top of the support section (402) being fixedly connected to the bottom of the bearing plate (304).

3. The high-voltage AC metal-enclosed ring network switchgear according to claim 1, characterized in that: An observation window (5) is provided on one of the side panels (3).

4. The high-voltage AC metal-enclosed ring network switchgear according to claim 1, characterized in that: The bottom of the top cover (2) is fixedly connected to a first mounting plate (6), and two second mounting plates (601) are symmetrically fixedly connected to the two sides of the bottom of the top cover (2), and a dual-axis motor (602) is fixedly connected to the first mounting plate (6), and the output shafts at both ends of the dual-axis motor (602) are fixedly connected to a screw rod (603), and the screw rod (603) is rotatably connected to the second mounting plate (601), and a screw rod sleeve (604) is threadedly connected to the screw rod (603), and the top of the screw rod sleeve (604) is fixedly connected to a limiting plate (605), and two cold air grooves (606) are symmetrically provided in the top cover (2), and the limiting plate (605) is inserted into the cold air groove (606), and the end of the limiting plate (605) is fixedly connected to a fan (607), and an air inlet (608) is provided on the top of each cold air groove (606).

5. The high-voltage AC metal-enclosed ring network switchgear according to claim 4, characterized in that: A spiral conduit (609) is provided in each of the two cold air troughs (606), and the two conduits (609) are interconnected, wherein one end of one of the conduits (609) is fixedly connected to a water inlet pipe (610), and the other end of the other conduit (609) is fixedly connected to a water outlet pipe (611).

6. The high-voltage AC metal-enclosed ring network switchgear according to claim 1, characterized in that: The top of the top cover (2) is fixedly connected to a ring wall (7), a dust cover (701) is nested and connected to the ring wall (7), and a plurality of dust holes (702) are provided on the four side walls of the dust cover (701).

7. The high-voltage AC metal-enclosed ring network switchgear according to claim 1, characterized in that: The self-locking assembly includes four linkage plates (8) arranged inside the base (1), a connecting plate (801) is fixedly connected between two adjacent linkage plates (8), a plurality of springs (802) are fixedly connected to the bottom of the linkage plate (8), the springs (802) are fixedly connected to the inner cavity wall of the base (1), two pressure plates (803) are fixedly connected to the top two sides of the linkage plate (8), the pressure plates (803) are inserted into the slide groove (301), and two pressure grooves (804) are symmetrically opened at the bottom of the side plate (3), the pressure plates (803) are snap-connected to the pressure grooves (804), and a pedal (805) is fixedly connected to one of the linkage plates (8).

8. The high-voltage AC metal-enclosed ring network switchgear according to claim 7, characterized in that: A movable groove (806) is provided on the base (1), the pedal (805) is located in the movable groove (806), and a sealing plate is rotatably connected to the movable groove (806).

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