Longitudinal-rotary withdrawable indoor alternating-current metal-enclosed switchgear

Abstract

The present invention provides a longitudinal-rotary withdrawable indoor alternating-current metal-enclosed switchgear, comprising a cabinet. The cabinet is provided with a main busbar compartment, a longitudinal-rotary isolating vacuum circuit breaker compartment, an electrical connection compartment and a pressure relief and air discharge compartment which are communicated with each other; the pressure relief and air discharge compartment is arranged above the electrical connection compartment; the electrical connection compartment is provided with air inlets; a lower fan for blowing air from the air inlets to the longitudinal-rotary isolating vacuum circuit breaker compartment is arranged between the longitudinal-rotary isolating vacuum circuit breaker compartment and the electrical connection compartment; and an upper fan module for extracting heat from the main busbar compartment is arranged at the top of the main busbar compartment. The compartments are arranged to be communicated with each other, and the lower fan is arranged below the longitudinal-rotary isolating vacuum circuit breaker compartment and the upper fan module is arranged at the top of the main busbar compartment, so as to discharge, from bottom to top, heat in the cabinet to the outside, thereby improving the heat dissipation efficiency and heat dissipation effect; in addition, the pressure relief and air discharge compartment is communicated with the longitudinal-rotary isolating vacuum circuit breaker compartment, thereby improving the use efficiency of the pressure relief and air discharge compartment.

Description

Longitudinal rotation movable indoor AC metal-enclosed switchgear TECHNICAL FIELD

[0001] The present application relates to the technical field of electrical switch cabinet, in particular, the present application relates to a longitudinal rotation movable indoor AC metal-enclosed switchgear. BACKGROUND

[0002] The three-phase pole column of the general indoor AC metal-enclosed switchgear is usually arranged horizontally from left to right, and the electrical connection needs to be realized by switching copper bars, which cannot form a smooth heat dissipation channel. The connection position between the compartments of the switchgear is difficult to dissipate heat due to insulation packaging, and the effect of the fan is poor. Further, when the longitudinal busbar of the general indoor AC metal-enclosed switchgear is installed in a face-to-face double row, the busbar outlet structure is usually large, resulting in a large size of the equipment width and depth, and the equipment occupies a large area. In addition, in the general indoor AC metal-enclosed switchgear, the operating mechanism of the movable circuit breaker blocks the observation position of the isolation contact, and the cooperation of the isolation contact cannot be directly observed in front of the equipment. The operating personnel cannot judge the operation position and cooperation state of the equipment, and can only estimate the cooperation state through an indirect way, which hides the fault risk of the equipment operation and cannot guarantee the personal safety of the operating personnel. SUMMARY

[0003] In order to solve at least one of the above technical problems, the present application provides a longitudinal rotation movable indoor AC metal-enclosed switchgear.

[0004] In order to achieve the above purpose, the present application provides the following technical scheme:

[0005] The present application provides a longitudinal rotation movable indoor AC metal-enclosed switchgear, comprising a cabinet, the cabinet is provided with a main busbar chamber, a longitudinal rotation isolation vacuum circuit breaker compartment, an electrical connection chamber and a pressure relief and exhaust compartment, the main busbar chamber, the longitudinal rotation isolation vacuum circuit breaker compartment and the electrical connection chamber are sequentially arranged from top to bottom and are communicated with each other through ventilation channels, the pressure relief and exhaust compartment is arranged above the electrical connection chamber and is communicated with the longitudinal rotation isolation vacuum circuit breaker compartment through a ventilation channel, the electrical connection chamber is provided with an air inlet, the longitudinal rotation isolation vacuum circuit breaker compartment and the electrical connection chamber are provided with a lower fan for blowing the air entering the air inlet to the longitudinal rotation isolation vacuum circuit breaker compartment, and the main busbar chamber is provided with an upper fan module for extracting heat in the main busbar chamber.

[0006] In one of the embodiments, the cabinet top end is provided with a detachable top cover plate, which is provided with an exhaust port, a bus chamber pressure relief and heat exhaust air duct, two-phase bus avoidance port and single-phase bus avoidance port, all of which are in communication with the main bus chamber. The exhaust port, two-phase bus avoidance port and bus chamber pressure relief and heat exhaust air duct are sequentially arranged from right to left. The single-phase bus avoidance port is arranged on the left side of the two-phase bus avoidance port and at the rear side of the bus chamber pressure relief and heat exhaust air duct. The upper fan module is arranged at the exhaust port. The two-phase bus avoidance port and the single-phase bus avoidance port are used to pass through two main buses and one main bus to form a three-phase main bus.

[0007] In one of the embodiments, the switch device further comprises three-phase main buses each provided with an outgoing terminal. Two-phase main buses are arranged in the two-phase bus avoidance port, and the other phase main bus is arranged in the single-phase bus avoidance port. The outgoing terminals extend along the rear side to the front side of the cabinet, and the transverse spacing between adjacent main bus outgoing terminals is the same.

[0008] In one of the embodiments, the longitudinal rotating isolation vacuum circuit breaker compartment is provided with a longitudinal rotating isolation vacuum circuit breaker. The longitudinal rotating isolation vacuum circuit breaker comprises a handcart frame, three-phase poles arranged on the handcart frame, and an operating mechanism. The handcart frame is pluggably arranged in the cabinet. The three-phase poles are arranged in the front-rear direction of the cabinet and are rotatably and electrically connected to the three-phase main buses one by one. The operating mechanism is used to control the working state of the three-phase poles.

[0009] In one of the embodiments, the cabinet is provided with a middle panel in front of the longitudinal rotating isolation vacuum circuit breaker compartment. The middle panel is provided with an observation window through which the position and connection of the three-phase pole contacts can be observed.

[0010] In one of the embodiments, the upper fan module comprises an upper fan and an upper fan shroud. The upper fan shroud is arranged on the exhaust port of the top cover plate. The upper fan is pluggably arranged in the upper fan shroud.

[0011] In one of the embodiments, the longitudinal rotating isolation vacuum circuit breaker compartment is provided with a lower fan mounting cover. The lower fan mounting cover extends along the front-rear direction of the cabinet. The lower fan is pluggably arranged in the lower fan mounting cover.

[0012] In one of the embodiments, the lower fan mounting cover comprises a cylindrical cavity for accommodating the lower fan. The bottom surface of the cylindrical cavity is provided with an air inlet hole. The top end of the cylindrical cavity is provided with a wind guide port in communication with the inner cavity of the cylindrical cavity.

[0013] In one of the embodiments, the pressure relief exhaust compartment is provided with a pressure relief partition plate, which comprises a lower partition plate and an upper partition plate bent from a plate piece; the lower partition plate is provided with a ventilation channel and is arranged between the pressure relief exhaust compartment and the longitudinal rotation isolation vacuum circuit breaker compartment; the upper partition plate is provided with a maintenance window and is arranged between the pressure relief exhaust compartment and the main busbar compartment.

[0014] In one of the embodiments, the cabinet body is further provided with a secondary instrument compartment and a small busbar compartment; the secondary instrument compartment is arranged in front of the main busbar compartment; and the small busbar compartment is arranged at the top end of the cabinet body and is located at the front end of the cabinet body.

[0015] The technical scheme provided by the application has the beneficial effects that:

[0016] 1. The longitudinal rotation movable indoor AC metal-enclosed switchgear, by arranging the compartments to be communicated with each other, arranging a lower fan below the longitudinal rotation isolation vacuum circuit breaker compartment and arranging an upper fan module at the top of the main busbar compartment, the heat in the cabinet body is exhausted out of the cabinet body from bottom to top, the heat dissipation efficiency and effect are improved, and the problem of failure caused by the temperature rise of the switchgear is solved. In addition, the pressure relief exhaust compartment is communicated with the longitudinal rotation isolation vacuum circuit breaker compartment, and the use efficiency of the pressure relief exhaust compartment is improved.

[0017] 2. By arranging the three-phase rotating pole columns of the longitudinal rotation movable isolation vacuum circuit breaker, arranging a panel at the front end of the cabinet body and arranging an observation window on the panel, the cooperation of the three-phase pole columns and the lower static contact can be directly observed, and the problem that the operating position and cooperation state of the switchgear are difficult to judge is solved.

[0018] 3. The three-phase electric connection is led out of the space of the main busbar compartment to the outside, and by staggering and arranging the leads, the three-phase main busbar is led out of the top front of the cabinet. The problem that the main busbar of the longitudinal rotation movable indoor AC metal-enclosed switchgear is restricted by the width and depth when the busbar is out of line in the face-to-face double-row installation is solved. BRIEF DESCRIPTION OF DRAWINGS

[0019] In order to more clearly illustrate the technical scheme in the embodiments of the application, the drawings needed in the description of the embodiments of the application will be briefly introduced.

[0020] Fig. 1 is a perspective view of the longitudinal rotation movable indoor AC metal-enclosed switchgear provided by one of the embodiments of the application;

[0021] Fig. 2 is a schematic view of the internal structure of the longitudinal rotation movable indoor AC metal-enclosed switchgear provided by one of the embodiments of the application;

[0022] Fig. 3 is a top view of the longitudinal rotation movable indoor AC metal-enclosed switchgear provided by one of the embodiments of the application;

[0023] Fig. 4 is a structural schematic diagram of a top cover plate according to an embodiment of the present application;

[0024] Fig. 5 is a structural schematic diagram of a pressure relief partition according to an embodiment of the present application;

[0025] Fig. 6 is a structural schematic diagram of an upper fan module according to an embodiment of the present application;

[0026] Fig. 7 is a structural schematic diagram of a lower fan mounting cover according to an embodiment of the present application;

[0027] Fig. 8 is a structural schematic diagram of an isolated vacuum circuit breaker according to an embodiment of the present application. DETAILED DESCRIPTION

[0028] Embodiments of the present application will be described in more detail with reference to the drawings. While several embodiments of the present application are shown in the drawings, it is understood that the present application can be embodied in various forms and should not be interpreted in a limited sense as set forth in the description below. It is to be understood that the drawings and the embodiments are only for the purpose of illustration and are not to be construed as limiting the scope of the present application.

[0029] It should be understood that each of the steps of the method embodiments of the present application can be performed in different orders and / or in parallel. In addition, the method embodiments can include additional steps and / or omit the steps shown. The scope of the present application is not limited in this respect.

[0030] The term "comprising" and variations thereof as used herein are used inclusively, i.e., "including, but not limited to." The term "connected" can be direct or indirect, through intervening components (elements). The term "one embodiment" means "at least one embodiment"; the term "another embodiment" means "at least one additional embodiment"; the term "some embodiments" means "at least some embodiments." Related definitions are given throughout the description.

[0031] It should be noted that the terms "first", "second", and the like used in the present application are merely used to distinguish different devices, modules or units, and do not necessarily mean that the devices, modules or units are different from each other, nor do they necessarily mean that the functions performed by the devices, modules or units are necessarily performed in the order or sequence described.

[0032] Referring to FIGS. 1-8, the present application provides a longitudinal rotation movable indoor AC metal-enclosed switchgear 1000 (hereinafter referred to as "switchgear 1000"), comprising a cabinet 100, three-phase main busbars 200, secondary instruments, a longitudinal rotation isolation vacuum circuit breaker compartment 130, current transformers, lower fans, lower busbars and upper fan modules 300 all arranged in the cabinet 100. The lower fans are used to blow air upward to cool the longitudinal rotation isolation vacuum circuit breaker compartment 130, and the upper fan modules 300 are used to extract hot air from the cabinet 100, thereby forming a downward ventilation channel and achieving the heat dissipation function of the switchgear 1000 by using double fans, improving the heat dissipation efficiency and effect, and avoiding the problem of failure caused by excessive temperature rise of the switchgear 1000 during operation.

[0033] The cabinet 100 is provided with a main busbar chamber 120, a longitudinal rotation isolation vacuum circuit breaker compartment 130, an electrical connection chamber 140 and a pressure relief and exhaust compartment 150. The main busbar chamber 120 is used to install the main busbars 200, which are three-phase main busbars 200 made of copper bars, and the outgoing ends of the three-phase main busbars 200 extend to the upper part of the cabinet 100 through lead wires. The current transformers are arranged at the lower end of the longitudinal rotation isolation vacuum circuit breaker compartment 130, and the longitudinal rotation isolation vacuum circuit breaker 500 is movably installed in the longitudinal rotation isolation vacuum circuit breaker compartment 130 above the current transformers. The longitudinal rotation isolation vacuum circuit breaker 500 comprises a trolley frame and three-phase poles 510 and operating mechanisms 520 arranged on the trolley frame. The operating mechanisms 520 are used to control the three-phase poles 510 to act and control the working mode of the three-phase poles 510. The three-phase poles 510 can be rotated by 90° to realize the connection and separation of the upper and lower circuits. The three-phase poles 510 are arranged along the front and rear directions of the cabinet 100 and are electrically connected to the three-phase main busbars 200 and the current transformers one by one, wherein when the upper moving contact of the three-phase pole 510 is engaged with the upper static contact connected to the main busbar 200 and the lower moving contact of the three-phase pole 510 is engaged with the lower static contact on the current transformer, the upper and lower circuits are connected.

[0034] In one embodiment, the main bus chamber 120, the longitudinal rotating isolation vacuum circuit breaker chamber 130, and the electrical connection chamber 140 are sequentially arranged from top to bottom along the height direction of the cabinet 100 and are connected to each other through the ventilation passages, the pressure relief and exhaust chamber 150 is arranged above the electrical connection chamber 140 and is located at the left side of the longitudinal rotating isolation vacuum circuit breaker chamber 130 and the main bus chamber 120, the pressure relief and exhaust chamber 150 is connected to the longitudinal rotating isolation vacuum circuit breaker chamber 130 through the ventilation passage, the electrical connection chamber 140 is provided with an air inlet 141, the lower fan is arranged between the longitudinal rotating isolation vacuum circuit breaker chamber 130 and the electrical connection chamber 140 and is used for blowing the air entering the air inlet 141 to the longitudinal rotating isolation vacuum circuit breaker chamber 130, and the upper fan module 300 is arranged at the top of the main bus chamber 120 and is used for extracting the heat in the cabinet 100 outwards through the main bus chamber 120.

[0035] In one embodiment, the pressure relief and exhaust chamber 150 is provided with a pressure relief partition plate 151, the pressure relief partition plate 151 is formed by bending a plate member to form a lower partition plate 1511 and an upper partition plate 1512 connected to each other, the lower partition plate 1511 is provided with a ventilation passage 1513, and the lower partition plate 1511 is arranged between the pressure relief and exhaust chamber 150 and the longitudinal rotating isolation vacuum circuit breaker chamber 130, so that part of the heat (hot air of the lower fan) of the longitudinal rotating isolation vacuum circuit breaker chamber 130 can be discharged upwards through the pressure relief and exhaust chamber 150, and the upper partition plate 1512 is arranged between the pressure relief and exhaust chamber 150 and the main bus chamber 120, the upper partition plate 1512 is provided with a maintenance window 1514, and the equipment in the main bus chamber can be conveniently installed and maintained through the maintenance window.

[0036] In one embodiment, the upper fan module 300 includes an upper fan 320 and an upper fan shroud 310, the upper fan shroud 310 is arranged on the exhaust port of the top cover plate 110, and the upper fan 320 is plug-inly received in the upper fan shroud 310. The upper fan 320 is provided with a transverse handle 330 and a longitudinal handle 340 to facilitate the plug-in of the upper fan 320 to realize the installation, disassembly, maintenance or replacement of the upper fan 320.

[0037] In one embodiment, the longitudinal rotating isolation vacuum circuit breaker chamber 130 is provided with a lower fan mounting shroud 400 extending along the front-rear direction of the cabinet 100, and the lower fan (not shown, the same below) is plug-inly arranged in the lower fan mounting shroud 400. The lower fan is plug-inly arranged, so that the lower fan can be maintained, repaired or replaced according to actual needs.

[0038] In one embodiment, the lower fan mounting cover 400 includes a cylindrical cavity 410 for receiving the lower fan, the cylindrical cavity 410 is provided with an air inlet hole 420 at the bottom, the air inlet hole is communicated with the electrical connection chamber 140, and the cylindrical cavity 410 is provided with an air guide hole 430 communicated with the inner cavity of the cylindrical cavity at the top end, and the lower fan mounting cover is fixed to the bottom of the longitudinal rotating isolation vacuum circuit breaker compartment 130 with the air guide hole facing the longitudinal rotating isolation vacuum circuit breaker compartment 130.

[0039] In addition, the cabinet 100 is provided with a lower panel, and a lower fan maintenance window 142 corresponding to the lower fan mounting cover 400 is arranged on the lower panel, the lower fan maintenance window 142 is communicated with the cylindrical cavity 410, so as to facilitate plugging and unplugging of the lower fan and to realize maintenance or replacement of the lower fan.

[0040] Therefore, by communicating the compartments with each other, arranging the lower fan below the longitudinal rotating isolation vacuum circuit breaker compartment 130 and arranging the upper fan module 300 on the top of the main busbar chamber 120, the heat in the cabinet 100 is discharged from bottom to top outside the cabinet 100, the heat dissipation efficiency and effect are improved, and the problem of failure caused by excessive temperature rise of the switchgear 1000 is solved. In addition, the pressure relief and exhaust compartment 150 is communicated with the longitudinal rotating isolation vacuum circuit breaker compartment 130, so that the pressure relief and exhaust compartment 150 can discharge part of the heat in the cabinet when the switchgear 1000 is normally working, fully utilize the pressure relief and exhaust compartment 150, effectively discharge the heat in the cabinet, ensure normal operation of the equipment in the cabinet, and reduce the power of the upper fan module 300, so that a large fan is not needed, the upper fan 320 occupies less cabinet top space, and the miniaturization of the switchgear 1000 is facilitated.

[0041] Please refer to FIG. 3 and FIG. 4, in one embodiment, the cabinet 100 is provided with a detachable top cover plate 110, the top cover plate 110 is provided with an exhaust port 114, a busbar chamber pressure relief and heat exhaust air duct 113, a two-phase busbar avoiding port 111 and a single-phase busbar avoiding port 112, all of which are communicated with the main busbar chamber 120, the exhaust port 114, the two-phase busbar avoiding port 111 and the busbar chamber pressure relief and heat exhaust air duct 113 are sequentially arranged from right to left, the single-phase busbar avoiding port 112 is arranged on the left side of the two-phase busbar avoiding port 111 and at the rear side of the busbar chamber pressure relief and heat exhaust air duct 113, and the upper fan cover 310 is arranged at the exhaust port 114, the two-phase busbar avoiding port 111 and the single-phase busbar avoiding port 112 are used to pass through two main busbars 200 and one main busbar 200 to form a three-phase main busbar 200.

[0042] In one embodiment, the switchgear 1000 further comprises three-phase main busbars 200 each provided with an outgoing terminal, wherein two-phase main busbars 200 pass through the two-phase busbar avoiding openings 111, and the other phase main busbar 200 passes through the single-phase busbar avoiding opening 112, and the outgoing terminals extend along the rear-to-front direction of the cabinet 100, and the lateral spacing between the outgoing terminals of adjacent main busbars 200 is the same.

[0043] Thus, the three-phase electrical connection is led out of the space of the main busbar chamber 120 to the outside of the cabinet top, and by staggering the main busbars 200 with the lead wires, the three-phase main busbars 200 are led out from the front of the cabinet top. The problem of the main busbar 200 of the switchgear 1000 in the longitudinal direction being restricted by the width and depth of the installation space when facing the double-row installation of the busbar outgoing structure is solved. The top cover plate 110 is designed to be detachable, and the cabinet top can be opened to form a maintenance space on the cabinet top, facilitating the assembly and maintenance of the switchgear 1000, and the layout of the cabinet top can also be adjusted according to actual needs in combination with the internal structure of the cabinet.

[0044] In one embodiment, the cabinet 100 is provided with a middle panel 131 in front of the longitudinal isolation vacuum circuit breaker compartment 130, and the middle panel 131 is provided with an observation window 132 through which the position and connection of the contacts of the three-phase pole 510 can be observed.

[0045] In one embodiment, the cabinet 100 is further provided with a secondary instrument compartment 170 and a small busbar chamber 160, the secondary instrument compartment 170 is arranged in front of the main busbar chamber 120, and the small busbar chamber 160 is arranged at the top end of the cabinet 100 and located at the front end of the cabinet 100, fully utilizing the installation space of the cabinet 100 to realize the miniaturization of the switchgear 1000.

[0046] The above description is only the preferred embodiment of the present application and the explanation of the applied technical principles. Those skilled in the art should understand that the scope of the application involved in the present application is not limited to the technical solutions formed by the specific combination of the above technical features, and should also cover other technical solutions formed by any combination of the above technical features or their equivalent features without departing from the above inventive concept. For example, the technical solutions formed by replacing the above features with technical features having similar functions in the present application (but not limited to) with each other.

[0047] Although the subject matter has been described in language specific to structural features and / or methodological acts, it is to be understood that the subject defined in the appended claims is not necessarily limited to the specific features or acts described above. Rather, the specific features and acts described above are disclosed as example forms of implementing the claims.

Claims

1. A longitudinal shift-out type indoor AC metal-enclosed switchgear comprising a cabinet, characterized in that, The cabinet body is provided with a main busbar chamber, a longitudinal rotation isolation vacuum circuit breaker compartment, an electrical connection chamber and a pressure relief and exhaust compartment, the main busbar chamber, the longitudinal rotation isolation vacuum circuit breaker compartment and the electrical connection chamber are sequentially arranged from top to bottom and are communicated with each other through ventilation channels, the pressure relief and exhaust compartment is arranged above the electrical connection chamber and is communicated with the longitudinal rotation isolation vacuum circuit breaker compartment through a ventilation channel, the electrical connection chamber is provided with an air inlet, a lower fan is arranged between the longitudinal rotation isolation vacuum circuit breaker compartment and the electrical connection chamber and is used for blowing air entering through the air inlet to the longitudinal rotation isolation vacuum circuit breaker compartment, and the main busbar chamber is provided with an upper fan module used for extracting heat in the main busbar chamber.

2. The indoor AC metal-enclosed switchgear of the longitudinal-rotating movable type according to claim 1, characterized in that, The cabinet body is provided with a main busbar chamber, a longitudinal rotation isolation vacuum circuit breaker compartment, an electrical connection chamber and a pressure relief and exhaust compartment, the main busbar chamber, the longitudinal rotation isolation vacuum circuit breaker compartment and the electrical connection chamber are sequentially arranged from top to bottom and are communicated with each other through ventilation channels, the pressure relief and exhaust compartment is arranged above the electrical connection chamber and is communicated with the longitudinal rotation isolation vacuum circuit breaker compartment through a ventilation channel, the electrical connection chamber is provided with an air inlet, a lower fan is arranged between the longitudinal rotation isolation vacuum circuit breaker compartment and the electrical connection chamber and is used for blowing air entering through the air inlet to the longitudinal rotation isolation vacuum circuit breaker compartment, and the main busbar chamber is provided with an upper fan module used for extracting heat in the main busbar chamber.

3. The indoor AC metal-enclosed switchgear of the longitudinal-rotating movable type according to claim 2, characterized in that, The cabinet body is provided with a main busbar chamber, a longitudinal rotation isolation vacuum circuit breaker compartment, an electrical connection chamber and a pressure relief and exhaust compartment, the main busbar chamber, the longitudinal rotation isolation vacuum circuit breaker compartment and the electrical connection chamber are sequentially arranged from top to bottom and are communicated with each other through ventilation channels, the pressure relief and exhaust compartment is arranged above the electrical connection chamber and is communicated with the longitudinal rotation isolation vacuum circuit breaker compartment through a ventilation channel, the electrical connection chamber is provided with an air inlet, a lower fan is arranged between the longitudinal rotation isolation vacuum circuit breaker compartment and the electrical connection chamber and is used for blowing air entering through the air inlet to the longitudinal rotation isolation vacuum circuit breaker compartment, and the main busbar chamber is provided with an upper fan module used for extracting heat in the main busbar chamber.

4. The indoor AC metal-enclosed switchgear of the longitudinal-rotating movable type according to claim 3, characterized in that, The longitudinal rotation isolation vacuum circuit breaker compartment is provided with a longitudinal rotation isolation vacuum circuit breaker, the longitudinal rotation isolation vacuum circuit breaker comprises a handcart frame and three-phase pole columns and an operating mechanism arranged on the handcart frame, the handcart frame is plug-in arranged in the cabinet body, the three-phase pole columns are arranged in the front-rear direction of the cabinet body and are electrically connected with the three-phase busbars in one-to-one correspondence in a rotatable mode, and the operating mechanism is used for controlling the working state of the three-phase pole columns.

5. The indoor AC metal-clad switchgear of the longitudinal-rotation moving-out type according to claim 1, characterized in that, The cabinet body is provided with a main busbar chamber, a longitudinal rotation isolation vacuum circuit breaker compartment, an electrical connection chamber and a pressure relief and exhaust compartment, the main busbar chamber, the longitudinal rotation isolation vacuum circuit breaker compartment and the electrical connection chamber are sequentially arranged from top to bottom and are communicated with each other through ventilation channels, the pressure relief and exhaust compartment is arranged above the electrical connection chamber and is communicated with the longitudinal rotation isolation vacuum circuit breaker compartment through a ventilation channel, the electrical connection chamber is provided with an air inlet, a lower fan is arranged between the longitudinal rotation isolation vacuum circuit breaker compartment and the electrical connection chamber and is used for blowing air entering through the air inlet to the longitudinal rotation isolation vacuum circuit breaker compartment, and the main busbar chamber is provided with an upper fan module used for extracting heat in the main busbar chamber.

6. The indoor AC metal-enclosed switchgear of the longitudinal-rotating movable type according to claim 5, characterized in that, The longitudinal rotation isolation vacuum circuit breaker compartment is provided with a longitudinal rotation isolation vacuum circuit breaker, the longitudinal rotation isolation vacuum circuit breaker comprises a handcart frame and three-phase pole columns and an operating mechanism arranged on the handcart frame, the handcart frame is plug-in arranged in the cabinet body, the three-phase pole columns are arranged in the front-rear direction of the cabinet body and are electrically connected with the three-phase busbars in one-to-one correspondence in a rotatable mode, and the operating mechanism is used for controlling the working state of the three-phase pole columns.

7. The indoor AC metal-clad switchgear of the longitudinal-rotation moving-out type according to claim 1, characterized by The cabinet body is provided with a main busbar chamber, a longitudinal rotation isolation vacuum circuit breaker compartment, an electrical connection chamber and a pressure relief and exhaust compartment, the main busbar chamber, the longitudinal rotation isolation vacuum circuit breaker compartment and the electrical connection chamber are sequentially arranged from top to bottom and are communicated with each other through ventilation channels, the pressure relief and exhaust compartment is arranged above the electrical connection chamber and is communicated with the longitudinal rotation isolation vacuum circuit breaker compartment through a ventilation channel, the electrical connection chamber is provided with an air inlet, a lower fan is arranged between the longitudinal rotation isolation vacuum circuit breaker compartment and the electrical connection chamber and is used for blowing air entering through the air inlet to the longitudinal rotation isolation vacuum circuit breaker compartment, and the main busbar chamber is provided with an upper fan module used for extracting heat in the main busbar chamber.

8. The indoor AC metal-enclosed switchgear of the longitudinal-rotating movable type according to claim 7, characterized in that, The longitudinal rotation isolation vacuum circuit breaker compartment is provided with a longitudinal rotation isolation vacuum circuit breaker, the longitudinal rotation isolation vacuum circuit breaker comprises a handcart frame and three-phase pole columns and an operating mechanism arranged on the handcart frame, the handcart frame is plug-in arranged in the cabinet body, the three-phase pole columns are arranged in the front-rear direction of the cabinet body and are electrically connected with the three-phase busbars in one-to-one correspondence in a rotatable mode, and the operating mechanism is used for controlling the working state of the three-phase pole columns.

9. The indoor AC metal-clad switchgear of the longitudinal-rotation moving-out type according to claim 1, characterized by The cabinet body is provided with a main busbar chamber, a longitudinal rotation isolation vacuum circuit breaker compartment, an electrical connection chamber and a pressure relief and exhaust compartment, the main busbar chamber, the longitudinal rotation isolation vacuum circuit breaker compartment and the electrical connection chamber are sequentially arranged from top to bottom and are communicated with each other through ventilation channels, the pressure relief and exhaust compartment is arranged above the electrical connection chamber and is communicated with the longitudinal rotation isolation vacuum circuit breaker compartment through a ventilation channel, the electrical connection chamber is provided with an air inlet, a lower fan is arranged between the longitudinal rotation isolation vacuum circuit breaker compartment and the electrical connection chamber and is used for blowing air entering through the air inlet to the longitudinal rotation isolation vacuum circuit breaker compartment, and the main busbar chamber is provided with an upper fan module used for extracting heat in the main busbar chamber.

10. The vertical-shedding indoor AC metal-clad switchgear of claim 1, wherein, The cabinet body is further provided with a secondary instrument compartment and a small busbar room, the secondary instrument compartment is arranged in front of the main busbar room, and the small busbar room is arranged at the top end of the cabinet body and located at the front end of the cabinet body.

Images