CN212033573U

CN212033573U - Fan device of switch cabinet and switch cabinet

Info

Publication number: CN212033573U
Application number: CN202020714409.0U
Authority: CN
Inventors: 林志超; 余其贵; 李剑胜
Original assignee: Xiamen Huadian Switchgear Co Ltd
Current assignee: Xiamen Huadian Switchgear Co Ltd
Priority date: 2020-04-30
Filing date: 2020-04-30
Publication date: 2020-11-27
Anticipated expiration: 2030-04-30

Abstract

The present disclosure discloses a fan device of a switch cabinet and a switch cabinet. The switch cabinet comprises a handcart chamber and a cable chamber, and the fan device is arranged in the cable chamber. The blower device is positioned at the bottom of the handcart room, an air duct of the blower device is communicated with the handcart room, an opening of the blower device is just opposite to a gap space formed between a door of the handcart room and a door of the cable room, and the gap space allows a protection plate of the blower device and the blower to pass through. The fan device comprises an installation shell, a fan and a protection plate, wherein the fan and the protection plate are arranged in the shell. An air duct is formed in the installation shell, an air outlet is formed in the installation shell, the air duct can be communicated with a handcart room of the switch cabinet through the air outlet, and an opening is formed in one side face, facing a cable room door of the switch cabinet, of the installation shell during installation. The guard plate is detachably mounted at the opening and covers the opening, and an air inlet window for external air to enter is arranged on the guard plate.

Description

Fan device of switch cabinet and switch cabinet

Technical Field

The present disclosure relates to a switchgear applied to a power grid, and in particular, to a fan device of a switch cabinet and a switch cabinet.

Background

The switch cabinet is an electrical device which is opened and closed, controls and protects electrical equipment in the process of generating, transmitting, distributing and converting electric energy of an electric power system. The switch cabinet mainly comprises a circuit breaker, a disconnecting switch, a load switch, an operating mechanism, a mutual inductor, various protection devices and the like. Generally, a fan device is arranged inside the switch cabinet and used for dissipating heat of a main switch of a handcart room. As shown in fig. 1, which is a schematic structural diagram of a conventional switch cabinet with a blower device, the blower device 101 is installed in a cable chamber, when the blower device 101 fails and needs to be replaced, since the handcart chamber door 103 and the cable chamber door 102 block on a drawing path of the blower device 101, a power failure needs to be performed first, and the handcart chamber door 103 and the cable chamber door 102 are opened to draw out the blower device 101. After the fan device 101 is pulled out, the bottom plate of the fan device 101 and the side plates on the two sides of the bottom plate are disassembled, and the fan is disassembled from the bottom plate for replacement. Therefore, the traditional mode of replacing the fan needs to be powered off, and the fan can be detached only after three large plates, namely the bottom plate and the two side plates, are detached, so that the detaching mode is very complex, and consumes time and labor.

SUMMERY OF THE UTILITY MODEL

In order to solve the problem that the fan that exists is difficult for changing among the correlation technique, this disclosure provides a cubical switchboard's of be liable to change fan device and cubical switchboard.

The present disclosure provides a fan device of a switch cabinet, including:

the handcart room air outlet device comprises a mounting shell, an air outlet, a first air inlet and a second air inlet, wherein an air channel is formed in the mounting shell, the air channel can be communicated with a handcart room of the switch cabinet through the air outlet, and an opening is formed in one side surface, facing a cable room door of the switch cabinet, of the mounting shell when the mounting shell is mounted;

the protection plate is detachably arranged at the opening and covers the opening, and is provided with an air inlet window for external air to enter; and

a fan disposed inside the mounting case.

Optionally, a protection plate mounting bracket is arranged on one side of the installation shell facing the cable chamber door of the switch cabinet during installation, and the opening is arranged in the middle of the protection plate mounting bracket.

Optionally, the fan device further comprises a top plate integrally formed with the protection plate mounting bracket, and the rear side of the top plate is connected with the top of the protection plate mounting bracket.

Optionally, the mounting housing includes a first side portion and a second side portion located at two sides of the opening, the first side portion includes a first side plate and a first bending plate extending from a rear end of the first side plate to a direction away from the opening, and the second side portion includes a second side plate and a second bending plate extending from a rear end of the second side plate to a direction away from the opening; the protection plate mounting bracket is fixedly connected with the first bending plate and the second bending plate; the top plate is connected with the tops of the first side plate and the second side plate.

Optionally, the fan device further includes a bottom plate, where the bottom plate includes a flat bottom surface, an inclined surface forming an included angle with the flat bottom surface, a vertical plate extending upward from a front end of the inclined surface, a bent edge bent from a top end of the vertical plate to a direction away from the flat bottom surface, and a binding plate disposed on the inclined surface and a side of the flat bottom surface;

the rear side of the flat bottom surface of the bottom plate is connected with the protective plate mounting bracket, the bent edge of the bottom plate is connected with the top plate, and the edge wrapping plate is connected with the first side plate or the second side plate;

the top plate, the bottom plate, the first side plate and the second side plate enclose an inner cavity of the mounting housing.

Optionally, the air outlet is provided at the front end of the top plate and located above the inclined plane of the bottom plate.

Optionally, a fan fixing plate is arranged in the installation shell, the fan fixing plate divides an inner cavity inside the installation shell into an air duct compartment and a fan installation compartment for installing a fan, and the air duct compartment forms the air duct.

Optionally, the fan includes fan main part and sets up first installing support and the second installing support of fan main part head end both sides, first installing support with the connection can be dismantled to the fan fixed plate, the second installing support with the connection can be dismantled to the bottom plate of installation casing.

Optionally, the width of the first mounting bracket extending along the fan fixing plate is greater than the width of the second mounting bracket extending towards the same direction.

Optionally, the first mounting bracket includes a vertical panel disposed to be close to the fan fixing plate and an edge bent from the vertical panel to the second mounting bracket, and the vertical panel is provided with a connecting hole;

the second mounting bracket comprises a strip-shaped plate parallel to the vertical panel of the first mounting bracket and a bending foot which is bent from the bottom end of the strip-shaped plate to the direction far away from the first mounting bracket and is parallel to the bottom plate, and a connecting hole used for being connected with the bottom plate is formed in the bending foot;

the fan main part includes the dryer and sets up the head end connecting plate of dryer head end, vertical panel connects the head end connecting plate is close to one side of fan fixed plate, the bar shaped plate is connected the head end connecting plate is kept away from one side of fan fixed plate.

Optionally, a projection of the second mounting bracket on the first mounting bracket is within a range between the connecting hole of the vertical panel and the head end connecting plate.

Optionally, the fan main part is still including setting up the tail end connecting plate of the tail end of dryer, the tail end connecting plate is including connecting the intermediate lamella of fan main part and being located the fixed lateral wall of intermediate lamella both sides, wherein, be close to the fan fixed plate sets up fixed lateral wall with the connection can be dismantled to the fan fixed plate.

Optionally, the fan fixing plate includes a long flat plate and a connection flap located at two ends of the long flat plate and bent toward the direction of the fan, a grid for passing an air flow is provided on the long flat plate, one of the connection flap is connected to the first side plate of the mounting housing, and the other connection flap is connected to the second side plate of the mounting housing.

Optionally, the guard plate includes outer backplate, is located the inboard waffle slab of outer backplate and setting are in the layering of waffle slab upper edge and lower limb, the waffle slab passes through the layering with outer backplate is connected, outer backplate is provided with the air inlet window, be provided with the net on the waffle slab, the aperture of net is less than 1 mm.

The present disclosure additionally provides a switchgear, comprising:

a handcart room door is arranged on a door frame of the handcart room;

the cable chamber is positioned below the handcart chamber, and a cable chamber door is arranged at a door frame of the cable chamber; and

foretell fan device, its setting is in the cable chamber, and be located the bottom of handcart room, the wind channel of fan device with handcart room intercommunication, the opening of fan device just right the clearance space that forms between handcart room door and the cable chamber door, clearance space allows the guard plate and the fan of fan device pass through, just the distance more than or equal to of interval between handcart room door and the cable chamber door the height of guard plate.

The technical scheme provided by the embodiment of the disclosure can have the following beneficial effects:

the fan device of this disclosure is including having open-ended installation casing, setting fan and the guard plate of setting at the opening part in the casing. An air duct is formed in the installation shell, an air outlet is formed in the installation shell, the air duct can be communicated with a handcart room of the switch cabinet through the air outlet, and the opening is formed in one side face, facing a cable room door of the switch cabinet, of the installation shell during installation. The guard plate is detachably mounted at the opening and covers the opening, and an air inlet window for external air to enter is arranged on the guard plate. This disclosed fan device sets up the opening and sets up the detachable guard plate at this opening part through the side towards cable chamber door at the installation casing, so, when the fan breaks down and needs to be changed, only need dismantle the guard plate, can take out the fan in the installation casing from this opening part, compare with the mode that three big boards need be dismantled to traditional fan device, namely, traditional fan device's guard plate and guard plate installing support integrated into one piece, need take whole fan device out and need dismantle three big boards of top and both sides board when changing the fan, just can take out the fan from the top, and this disclosed fan device only need dismantle a guard plate and only take out a part of fan from the opening, therefore, this disclosure fan device's fan is changed more conveniently, manpower and material resources have been saved.

The switch cabinet comprises a handcart chamber, a cable chamber and a fan device arranged in the cable chamber. A handcart room door is arranged on the door frame of the handcart room. The cable chamber is located the below of handcart room, and the door frame department of cable chamber is provided with cable chamber door. The blower device is positioned at the bottom of the handcart room, the air duct of the blower device is communicated with the handcart room, the opening of the blower device is just opposite to a gap space formed between the door of the handcart room and the door of the cable room, the gap space allows a protection plate and a blower of the blower device to pass through, and the distance between the door of the handcart room and the door of the cable room is greater than or equal to the height of the protection plate. So, when needs are changed the fan, the guard plate is dismantled to the clearance space between operating personnel accessible handcart room door and the cable chamber door, and the fan is also demolishd from the opening part after the guard plate is demolishd, remounted through this opening again after demolising, consequently, at the change in-process, does not need the cubical switchboard outage, and then avoids causing the problem of large tracts of land power failure because of the cubical switchboard outage.

It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the disclosure.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the present disclosure and together with the description, serve to explain the principles of the disclosure.

Fig. 1 is a schematic structural diagram of a conventional switch cabinet with a fan device.

Fig. 2 is a schematic diagram of a switchgear structure shown in the present disclosure.

FIG. 3 is a schematic structural view of the fan apparatus of the present disclosure without a shroud.

FIG. 4 is a schematic structural view of a fan assembly with a guard according to the present disclosure.

FIG. 5 is a schematic illustration of a fan apparatus of the present disclosure without a top plate.

FIG. 6 is a schematic structural view of a top plate and fender mounting bracket of the fan assembly of the present disclosure.

Fig. 7 is a schematic structural diagram of a base plate of a fan apparatus of the present disclosure.

Fig. 8 is a schematic structural diagram of a fan fixing plate of the fan device of the present disclosure.

Fig. 9 is a schematic structural diagram of a fan of the fan apparatus of the present disclosure.

Fig. 10 is a schematic structural view of a guard plate of the fan apparatus of the present disclosure.

Fig. 11 is an exploded schematic view of a guard plate of the fan apparatus of the present disclosure.

Fig. 12 is an inside structural schematic view of a guard plate of the fan apparatus of the present disclosure.

Fig. 13 is a side schematic view of a fan apparatus of the present disclosure.

Detailed Description

For further explanation of the principles and construction of the present disclosure, reference will now be made in detail to the preferred embodiments of the present disclosure, which are illustrated in the accompanying drawings.

As shown in fig. 2, the present disclosure provides a switch cabinet 100, and a plurality of functional rooms such as a handcart room 20 and a cable room 30 are arranged in the switch cabinet 100. Other switch devices such as a circuit breaker, an isolating switch or a load switch can be arranged in the handcart room 20, and a handcart room door 21 is arranged at a door frame of the handcart room 20. The cable chamber 30 is located below the handcart chamber 20, and a cable chamber door 31 is provided at a door frame of the cable chamber 30.

The fan device 10 is disposed in the cable chamber 30 and is located at the bottom of the handcart chamber 20. The air duct of the blower device 10 is communicated with the handcart room 20, and air sent by the blower enters the handcart room 20 through the air duct to dissipate heat of a main switch (such as a circuit breaker, an isolating switch or a load switch) in the handcart room 20. The opening of the blower device 10 is directly opposite to the clearance space formed between the handcart chamber door 21 and the cable chamber door 31. Compared with a traditional switch cabinet, the height of the cable chamber door 31 of the present disclosure is cut off by one section, and the gap space is increased, so that the gap space is large enough to allow the protection plate and the fan of the fan device to pass through, and the distance L1 between the handcart chamber door 21 and the cable chamber door 31 is greater than or equal to the height of the protection plate and the fan of the fan device 10. So, when needs are changed the fan, the guard plate is dismantled in the direct clearance space of following between handcart room door 21 and cable chamber door 31 of operating personnel, and the fan also can be directly demolishd from the opening part after the guard plate is demolishd to take out, at the change in-process, do not need cubical switchboard 100 outage.

As shown in fig. 3 and 4, the fan apparatus 10 includes a mount case 11 having an opening 111, a fan 13 disposed in the mount case 11, and a shielding plate 15 detachably disposed at the opening 111 and covering the opening 111.

An air duct is formed in the mounting housing 11, an air outlet 112 is formed at the top of the air duct, and the air duct 112 is communicated with the handcart room 20 of the switch cabinet 100 through the air outlet 112. An opening 111 is provided on a side of the mounting case 11 facing the cable compartment door of the switchgear 100. The size of the opening 111 is larger than the cross-sectional size of the fan 13 so that the fan 13 can be taken out from the opening 111.

The side of the mounting case 11 facing the cable chamber door 31 of the switchgear 100 when mounted is provided with a shield plate mounting bracket 114. The fender mounting bracket 114 includes a panel 1141 having the opening, and a pressing plate 1142 formed on a periphery of the panel 1141 and bent from the panel 1141 in a direction close to the fan 13. The perimeter of panel 1141 is defined herein to be the side attached to top panel 113.

As shown in fig. 3 and 5, the mounting housing 11 further includes a top plate 113, a first side 115, a second side 117, and a bottom plate 118.

The first side 115 and the second side 117 are located on both sides of the opening 111. The first side portion 115 includes a first side plate 1151 and a first bent plate 1152 extending from a rear end of the first side plate 1151 in a direction away from the opening 111. The second side 117 includes a second side plate 1171 and a second bending plate 1172 extending from a rear end of the second side plate 1171 away from the opening 111. The panel 1141 of the fender mounting bracket 114 is fixedly connected to the first and second

bent plates

1152, 1172. The fixed connection can be realized by fixing fasteners such as bolts, screws and the like. The pressing plates 1142 at the left and right ends of the fender mounting bracket 114 respectively cover the first bending plate 1152 and the second bending plate 1172. The first side plate 1151 and the second side plate 1171 are generally trapezoidal in shape such that the first side plate 1151 and the second side plate 1171 close the lateral gap formed between the bottom plate 118 and the top plate 113.

The top panel 113 overlies the top ends of the first side panel 1151 and the second side panel 1171. As shown in fig. 6, the top plate 113 may be integrally formed with the fender mounting bracket 114. The rear end of the top plate 113 is connected to the top of the fender mounting bracket 114, and the front end of the top plate 113 is provided with an L-shaped bracket 1131.

In addition, in other embodiments, the top plate 113 and the fender mounting bracket 114 may not be integrally formed, i.e., the top plate 113 and the fender mounting bracket 114 may be connected by fasteners.

As shown in fig. 7, the bottom plate 118 has a flat bottom surface 1181, a slope 1182 connected to the flat bottom surface 1181 and forming an included angle with the flat bottom surface 1181, a vertical plate 1183 extending upward from the front end of the slope 1182, a bent edge 1184 bent from the top end of the vertical plate 1183 in a direction away from the flat bottom surface, and a bordure plate 1185 disposed at the side of the slope 1182 and the flat bottom surface 1181. The containment panel 1185 is attached to either the first side panel 1151 or the second side panel 1171. The rear side of the flat bottom surface 1181 is connected to a press plate at the bottom of the fender mounting bracket 114. Riser 1183 is connected to top plate 113.

The top panel 113, bottom panel 118, first side panel 1151 and second side panel 1171 define an interior cavity.

With continued reference to fig. 5, a fan mounting plate 17 is disposed within the mounting housing 11. The fan fixing plate 17 divides an inner cavity inside the mounting case 11 into an air duct compartment and a fan mounting compartment for mounting the fan 13. The air duct compartment forms the air duct. The wind from the fan 13 flows through the duct compartment to the hand truck compartment 20.

As shown in fig. 8, the fan fixing plate 17 includes an elongated flat plate 171 and a connection flap 172 bent from both ends of the elongated flat plate 171 toward the fan 13. One of the attachment flaps 172 is attached to the first side panel 1151 and the other attachment flap 172 is attached to the second side panel 1171. The top edge of the elongated plate 171 is connected to the top plate 113 and the bottom edge is connected to the flat bottom surface 1181. The elongated plate 171 is provided with a grid 173 through which the air flow passes.

A fan 13 is mounted in the fan mounting compartment. As shown in fig. 9, the fan 13 includes a fan main body 131, and a first mounting bracket 134 and a second mounting bracket 135 provided on both sides of a head end of the fan main body. The fan main body 131 comprises an air duct 136, a head end connecting plate 133 arranged at the head end of the air duct 136 and a tail end connecting plate 132 arranged at the tail end of the air duct 136. The tail end connecting plate 132 includes a middle plate 1321 connected to the air duct 136 and fixing sidewalls 1322 on both sides of the middle plate 1321. Wherein, the fixed side wall 1322 arranged close to the fan fixing plate 17 is detachably connected with the fan fixing plate 17.

The head-end connection plate 133 includes a middle plate 1331 connected to the air duct 136 and fixing sidewalls 1332 positioned at both sides of the middle plate 1331. The first mounting bracket 134 and the second mounting bracket 135 are respectively connected to two fixing sidewalls 1332 of the head end connecting plate 133. And the first mounting bracket 134 is connected to a side of the head end connecting plate 133 close to the fan fixing plate 17, and the second mounting bracket 135 is connected to a side of the head end connecting plate 133 far from the fan fixing plate 17. The first mounting bracket 134 is detachably connected to the fan fixing plate 17, and the second mounting bracket 135 is detachably connected to the base plate 118.

The first mounting bracket 134 includes a vertical panel 1341 disposed to be closely attached to the fan fixing plate 17, and an edge 1342 bent from the vertical panel 1341 toward the second mounting bracket 135. The vertical panel 1341 is provided with a connection hole for connecting with the fan fixing plate 17. The vertical panel 1341 faces the opening 111 of the mounting case 11 to facilitate detachment using a detaching tool.

The second mounting bracket 135 comprises a strip-shaped plate 1351 parallel to the vertical panel 1341 of the first mounting bracket 134 and a bending foot 135 bent from the bottom end of the strip-shaped plate 1351 to a direction away from the first mounting bracket 134 and parallel to the bottom plate 118, wherein the bending foot 135 is provided with a connecting hole for connecting with the bottom plate 118. The second mounting bracket 135 also includes a hooked wire securing end 1353 disposed at the top end of the strip 1351. The lead of the fan passes through the lead fixing end 1353 and is connected to a control room of the switch cabinet.

The width of the first mounting bracket 134 extending along the fan fixing plate 17 is greater than the width of the second mounting bracket 135 extending toward the same direction, that is, the width of the vertical panel 1341 is greater than the width of the strip-shaped plate 1351, and the projection of the second mounting bracket 135 on the vertical panel 1341 of the first mounting bracket 134 is within the range between the connection hole 1343 of the vertical panel 1341 and the head-end connection plate 133. In this way, when the first mounting bracket 134 is detached, the second mounting bracket 135 does not interfere with the first mounting bracket, and a necessary operation space is reserved for detaching the fan 13, so that the detachment is convenient.

In addition, since the bending leg 135 of the second mounting bracket 135 is lap-jointed with the bottom plate 118 and is disposed near the opening 111, it is convenient to disassemble using a disassembling tool.

As shown in fig. 10 to 12, the shielding plate 15 includes an outer panel 151, a mesh panel 154 positioned inside the outer panel 151, and beads 153 provided at upper and lower edges of the mesh panel 154. The mesh plate 154 is connected to the outer shield 151 by a bead 153, and the bead 153 prevents both edges of the mesh plate 154 from being raised. The mesh plate 154 is provided with meshes, and the aperture of each mesh is smaller than 1mm, so that solid foreign matters with the diameter of 1mm can be prevented from entering, and the protection grade of the protection plate 15 can reach IP4 x. An air inlet window 152 is further arranged in the middle of the outer protection plate 151, an air inlet grid is arranged on the air inlet window 152, and air in the external environment can enter the air inlet grid. Both ends of the guard plate 15 are provided with fixing holes, and thus, the guard plate 15 is fastened to the guard plate mounting bracket 114 by fastening members. The top and bottom edges of the outer skin 151 are bent inward to ensure the strength of the outer skin 151 and to ensure that the middle portion does not arch.

The size of the shielding plate 15 is larger than that of the opening 111 so that the shielding plate 15 can completely cover the opening 111.

As shown in fig. 13, the wind from the fan 13 enters the wind tunnel through the grid of the fan fixing plate 17, and flows in the wind tunnel toward the hand truck compartment 20 in the direction of arrow a.

This disclosed fan device 10 sets up opening 111 and sets up detachable guard plate 15 in this opening 111 department through 11 side faces cable chamber at installation casing, make fan 13 in the installation casing 11 can take out from this opening 111 department, compare with traditional fan device, because traditional fan device's guard plate and guard plate installing support integrated into one piece, need not only take out whole fan device when changing the fan and still need dismantle top and both sides board, and the change of this disclosed fan device 10's fan only need dismantle a guard plate and take out a part of fan, it is more convenient to change, manpower and material resources have been saved.

In addition, the height of the cable chamber door 31 of the switchgear cabinet of the present disclosure is reduced compared to that of the conventional switchgear cabinet, so that a gap space formed between the handcart chamber door 21 and the cable chamber door 31 is increased, having a space large enough to allow the shielding plate 15 and the blower fan 13 to pass through. The distance L1 between the handcart chamber door 21 and the cable chamber door 31 is greater than or equal to the height of the protection plate 15. Therefore, when the fan breaks down and needs to be replaced, the fan does not need to be powered off, and can be directly replaced, so that the problem of large-area power failure caused by replacement of the fan when the fan breaks down is solved.

The above description is only for the purpose of illustrating the preferred embodiments of the present disclosure and is not to be construed as limiting the scope of the present disclosure, but rather is intended to cover all equivalent structural changes made by applying the teachings of the present disclosure to the accompanying drawings.

Claims

1. A fan device of cubical switchboard which characterized in that includes:

a fan disposed inside the mounting case.

2. The fan device of a switchgear cabinet according to claim 1, wherein the side of the installation housing facing the cable chamber door of the switchgear cabinet when installed is provided with a shield plate installation support, the middle of which is provided with the opening.

3. The switchgear cabinet fan assembly of claim 2, further comprising a top plate integrally formed with the fender mounting bracket, a rear side of the top plate being connected to a top of the fender mounting bracket.

4. The fan apparatus for a switch cabinet according to claim 3, wherein the mounting housing includes a first side portion and a second side portion on both sides of the opening, the first side portion includes a first side plate and a first bent plate extending from a rear end of the first side plate in a direction away from the opening, and the second side portion includes a second side plate and a second bent plate extending from a rear end of the second side plate in a direction away from the opening;

the protection plate mounting bracket is fixedly connected with the first bending plate and the second bending plate;

the top plate is connected with the tops of the first side plate and the second side plate.

5. The fan device of claim 4, further comprising a bottom plate, wherein the bottom plate comprises a flat bottom surface, an inclined surface forming an included angle with the flat bottom surface, a vertical plate extending upward from a front end of the inclined surface, a bent edge bent from a top end of the vertical plate in a direction away from the flat bottom surface, and a binding plate disposed on a side of the inclined surface and the flat bottom surface;

6. The fan apparatus of switch cabinet according to claim 5, wherein the air outlet is provided at a front end of the top plate and above an inclined surface of the bottom plate.

7. The fan device of a switchgear cabinet according to claim 1, wherein a fan fixing plate is disposed in the mounting housing, the fan fixing plate divides an inner cavity inside the mounting housing into an air duct compartment and a fan mounting compartment for mounting a fan, and the air duct compartment forms the air duct.

8. The fan device of switch cabinet according to claim 7, wherein the fan includes a fan main body, and a first mounting bracket and a second mounting bracket disposed on two sides of a head end of the fan main body, the first mounting bracket is detachably connected to the fan fixing plate, and the second mounting bracket is detachably connected to the bottom plate of the mounting housing.

9. The switchgear cabinet fan assembly of claim 8, wherein the first mounting bracket extends along the fan mounting plate a greater width than the second mounting bracket extends in the same direction.

10. The fan device of the switch cabinet according to claim 9, wherein the first mounting bracket comprises a vertical panel tightly attached to the fan fixing plate and an edge bent from the vertical panel to the second mounting bracket, and the vertical panel is provided with a connecting hole;

the fan main part includes the dryer and sets up the head end connecting plate of the head end of dryer, vertical panel connects the head end connecting plate is close to one side of fan fixed plate, the bar shaped plate is connected the head end connecting plate is kept away from one side of fan fixed plate.

11. The switchgear cabinet fan assembly of claim 10, wherein a projection of the second mounting bracket onto the first mounting bracket is within a range between the connection hole of the vertical panel and the head end connection plate.

12. The fan device of switch cabinet according to claim 10, wherein the fan main body further comprises a tail end connecting plate disposed at a tail end of the air duct, the tail end connecting plate comprises a middle plate connected to the fan main body and fixed side walls located at two sides of the middle plate, and the fixed side walls disposed near the fan fixing plate are detachably connected to the fan fixing plate.

13. The fan apparatus of a switchgear cabinet as claimed in claim 7, wherein the fan fixing plate comprises an elongated flat plate and connection flaps at two ends of the elongated flat plate and bent toward the direction of the fan, the elongated flat plate is provided with a grid for passing air flow, one of the connection flaps is connected to the first side plate of the mounting housing, and the other connection flap is connected to the second side plate of the mounting housing.

14. The fan device of the switch cabinet according to claim 1, wherein the protection plate comprises an outer protection plate, a grid plate located inside the outer protection plate, and pressing strips arranged on the upper edge and the lower edge of the grid plate, the grid plate is connected with the outer protection plate through the pressing strips, the outer protection plate is provided with an air inlet window, a grid is arranged on the grid plate, and the aperture of the grid is smaller than 1 mm.

15. A switchgear, comprising:

a handcart room door is arranged on a door frame of the handcart room;

the blower device according to any one of claims 1 to 14, which is disposed in the cable chamber and located at the bottom of the handcart chamber, wherein the air duct of the blower device is communicated with the handcart chamber, the opening of the blower device is right opposite to a gap space formed between the door of the handcart chamber and the door of the cable chamber, the gap space allows a protection plate and a blower of the blower device to pass through, and the distance between the door of the handcart chamber and the door of the cable chamber is greater than or equal to the height of the protection plate.