A withdrawable heat dissipation switch cabinet

Abstract

The present invention relates to the technical field of switch cabinets, and discloses a withdrawable heat dissipation switch cabinet, including a switch cabinet and a switch box; an air inlet pipe, an air outlet pipe and a docking pipe are arranged inside the switch cabinet, and a filling sealing component, an opening and closing component and a trigger are arranged on the docking pipe, and the trigger is used to trigger the operation of the filling sealing component and the opening and closing component. The present invention supplies and exhausts air to the switch cabinet respectively through two groups of docking pipes, generates air convection inside the switch cabinet, enables rapid air flow inside the switch cabinet, avoids hot air from being retained inside the switch box, and achieves a fast and efficient heat dissipation effect; multiple groups of docking pipes are arranged on the air inlet pipe and the air outlet pipe, corresponding to multiple groups of switch boxes respectively, and the docking pipes inside the switch cabinet that are not plugged in the switch box are in a closed state, so that the air inlet pipe only blows air to the plugged in switch box, blows air to the inside of the switch box in a directional manner to dissipate heat, and avoids air waste in large-scale air cooling and heat dissipation.

Description

Technical Field

[0001] The invention relates to the technical field of switch cabinets, and in particular to a drawable heat dissipation switch cabinet. Background Art

[0002] The drawer-type switchgear is a closed shell made of steel plates. The electrical components of the incoming and outgoing line circuits are installed in removable drawers to form functional units that can complete a certain type of power supply task. The functional units of the drawer-type switchgear are separated from the busbar or cable by a grounded metal plate or a functional board made of plastic, forming three areas: the busbar, the functional unit and the cable. There are also isolation measures between each functional unit. The drawer-type switchgear has high reliability, safety and interchangeability. It is a relatively advanced switchgear. Most of the switchgear produced are drawer-type switchgear. They are suitable for industrial and mining enterprises and high-rise buildings that require high power supply reliability as centralized control distribution centers.

[0003] The prior art discloses a draw-out heat dissipation switch cabinet, with the announcement number CN112701603B. The invention can draw a large amount of air into the switch cabinet through an inlet fan, and the inlet fan and the exhaust fan can work simultaneously to speed up the air flow inside the switch cabinet and improve the heat dissipation efficiency. The filter screen will filter the air when the air is inlet to prevent a large amount of dust from entering the switch cabinet and accumulating on the switch components, affecting the normal use of the switch mechanical structure and even damaging the switch components. However, the scheme still has the following technical problems: when the draw-out heat dissipation switch cabinet in the prior art is in use, not all switch boxes are plugged into the switch cabinet. If the switch cabinet adopts an integral heat dissipation, there will be a waste of heat dissipation air. At the same time, the heat dissipation method in the prior art only blows air into the inside of the switch box. If the air absorbs a certain amount of heat inside the switch box but is not discharged in time, hot air will be retained, affecting the actual heat dissipation effect. Summary of the invention

[0004] The purpose of the present invention is to provide a technical solution, which adopts the form of a combination of inlet and outlet air to form rapid air convection inside the switch box, while achieving a modular split heat dissipation effect, and only blows air to dissipate heat on the switch box inserted into the switch cabinet, so as to solve the problems in the prior art raised in the above background technology.

[0005] To achieve the above object, the present invention adopts the following technical solutions:

[0006] A withdrawable heat dissipation switch cabinet, comprising a switch cabinet and a heat dissipation fan, wherein a plurality of withdrawable switch boxes are installed on the front of the switch cabinet;

[0007] An air inlet pipe and an air outlet pipe are arranged inside the switch cabinet, the heat dissipation fan supplies air through the air inlet pipe, and the air outlet pipe is used to discharge the air with heat out of the switch cabinet, the air inlet pipe and the air outlet pipe are both provided with a plurality of groups of butt joints, the butt joints and the switch box are arranged correspondingly, the inner side of the switch box is provided with butt joint holes matching with the butt joints, and the butt joints are provided with sealing members for fitting the butt joint holes;

[0008] The butt joint tube is provided with a filling and sealing assembly, an opening and closing assembly and a trigger, and the trigger is used to trigger the operation of the filling and sealing assembly and the opening and closing assembly;

[0009] When the switch box is inserted and installed inside the switch cabinet, the switch cabinet triggers the trigger piece, and the opening and closing component controls the butt joint pipe to be in an open state, so that only the butt joint pipe connected to the switch box can circulate heat dissipating air, and at the same time the filling and sealing component fills and seals the gap between the butt joint pipe and the butt joint hole.

[0010] Preferably, the docking tube includes a first docking tube and a second docking tube, the first docking tube is arranged on the air inlet pipe, and the second docking tube is arranged on the air outlet pipe, the heat dissipating air enters the switch box through the first docking tube, and the second docking tube draws the hot air out of the switch box.

[0011] Preferably, the opening and closing component is configured as an iris structure, and the iris structure includes an opening and closing drive rod and a plurality of groups of iris arc-shaped pieces, the opening and closing drive rod is used to control the opening and closing of the plurality of groups of iris arc-shaped pieces, the trigger member is movably mounted on the docking tube, the switch box pushes the trigger member to move to drive the opening and closing drive rod to swing, thereby realizing the opening of the plurality of groups of iris arc-shaped pieces, and the opening and closing component also includes a reset structure for closing the iris structure.

[0012] Preferably, the iris structure is installed on a sealing member, and a makeshift groove for the opening and closing drive rod is opened on the sealing member. The reset structure is configured as a second reset spring, one end of the second reset spring is connected to the groove wall of the makeshift groove, and the other end of the second reset spring is connected to the opening and closing drive rod.

[0013] Preferably, a threaded hole is provided on the sealing member, a threaded winding post is threadedly installed in the threaded hole, a connecting wire is wound on the threaded winding post, the connecting wire is connected to the opening and closing drive rod, the trigger member is rotatably connected to the threaded winding post, the switch box pushes the trigger member and the threaded winding post, the threaded winding post rotates in the threaded hole while winding the connecting wire, and then the opening and closing drive rod is pulled through the connecting wire to realize the opening of the iris structure.

[0014] Preferably, the filling and sealing assembly includes a sealing airbag ring and an air storage tube, a piston plate is installed on the trigger member, the piston plate is slidably inserted in the air storage tube, and the air storage tube is connected to the sealing airbag ring through a connecting tube. The switch box pushes the trigger member and the piston plate to push the gas in the air storage tube into the sealing airbag ring, so that the sealing airbag ring gradually expands to fill the gap between the docking tube and the docking hole.

[0015] Preferably, a plurality of groups of expansion air circles are arranged inside the sealed air bag ring, and the plurality of groups of expansion air circles are connected to each other through connecting tubes. The air storage tube is connected to the expansion air circle inside the sealed air bag ring through the connecting tube. A plurality of groups of telescopic air columns distributed in a ring array are arranged on the expansion air circle, and the plurality of groups of telescopic air columns are radially supported inside the sealed air bag ring.

[0016] Preferably, a first return spring is provided inside the gas storage tube, one end of the first return spring is supported on the inner end surface of the gas storage tube, and the other end is supported on the piston plate. When the switch box is pulled out of the switch cabinet, the trigger member is reset under the action of the first return spring, and the gas in the gas storage tube returns to the sealing airbag ring, so that the sealing airbag ring returns to its original state so that the docking tube and the docking hole can be separated smoothly.

[0017] Preferably, a mounting bracket is installed inside the switch cabinet, and a plurality of slots for inserting switch boxes are provided on the mounting bracket. An exhaust duct is installed inside the switch cabinet, and the second docking pipe is connected to one end of the exhaust duct, and a sealing member is provided at the other end of the exhaust duct.

[0018] Preferably, the heat dissipation fan is arranged on the top of the switch cabinet, the air inlet pipe and the air outlet pipe are both arranged vertically, the front and back of the switch cabinet are provided with exhaust holes corresponding to the exhaust pipe, the air outlet pipe is provided with an exhaust fan, and the second connecting pipe discharges the extracted hot air through the exhaust pipe and the exhaust holes.

[0019] Technical effects and advantages of the present invention: Compared with the prior art, the withdrawable heat dissipation switch cabinet proposed by the present invention has the following advantages:

[0020] 1. The present invention supplies air to and exhausts air from the switch cabinet through two sets of butt pipes, generates air convection inside the switch cabinet, and enables rapid air flow inside the switch cabinet, thereby preventing hot air from being retained inside the switch box, thereby achieving rapid and efficient heat dissipation effect;

[0021] 2. Multiple groups of docking pipes are arranged on the air inlet and outlet pipes, corresponding to multiple groups of switch boxes respectively. The docking pipes in the switch cabinet that are not connected to the switch boxes are in a closed state, so that the air inlet pipe only blows air to the plugged switch boxes, and blows air to the inside of the switch boxes in a directional manner to dissipate heat, thus avoiding air waste caused by large-scale air cooling.

[0022] 3. The connection between the switch cabinet insertion action and the opening and closing state switching of the butt pipe is realized through the opening and closing components, and the modular heat dissipation function of the switch box is realized;

[0023] 4. The filling and sealing components realize the linkage between the switch cabinet insertion action and the expansion and contraction of the sealing airbag ring, so that when the switch box is inserted into the switch cabinet, the sealing airbag ring expands to fill the gap between the docking tube and the docking hole to prevent air from leaking out of the gap. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is a schematic diagram of the three-dimensional structure of the heat dissipation switch cabinet of the present invention;

[0025] Figure 2 It is a side structural schematic diagram of the heat dissipation switch cabinet of the present invention;

[0026] Figure 3 It is a schematic diagram of the switch box and the inlet and outlet air ducts and other structures of the present invention;

[0027] Figure 4 For the present invention Figure 3 A schematic diagram of the enlarged structure at A in the middle;

[0028] Figure 5 This is one of the structural schematic diagrams of the switch box and two sets of butt-joint pipes of the present invention;

[0029] Figure 6 This is the second structural schematic diagram of the switch box and two sets of butt-joint pipes of the present invention;

[0030] Figure 7 It is a three-dimensional schematic diagram of the structures such as the butt joint pipe and the sealing member in the present invention;

[0031] Figure 8 For the present invention Figure 7 A schematic diagram of the enlarged structure at B in the middle;

[0032] Fig. 9 It is a front structural schematic diagram of the butt joint pipe in the present invention;

[0033] Fig.10 It is a schematic diagram of the top view of the butt joint pipe in the present invention;

[0034] Fig.11 For the present invention Fig.10 Schematic diagram of the enlarged structure at point C in the middle.

[0035] In the figure:

[0036] 11. Switch cabinet; 12. Switch box; 13. Cooling fan; 14. Exhaust hole; 15. Mounting bracket; 16. Docking hole;

[0037] 21. Air inlet pipe; 22. Air outlet pipe; 23. First connecting pipe; 24. Second connecting pipe; 25. Exhaust pipe; 26. Blocking piece; 27. Sealing piece; 28. Filling sealing assembly; 29. ​​Opening and closing assembly; 210. Trigger; 211. Give way slot;

[0038] 281. Sealing airbag ring; 282. Inflatable air ring; 283. Air storage tube; 284. Connecting tube; 285. Telescopic air column; 286. Piston plate; 287. First return spring; 288. Connecting tube; 291. Iris structure; 292. Iris arc piece; 293. Opening and closing drive rod; 294. Second return spring; 295. Connecting wire; 296. Threaded winding column. DETAILED DESCRIPTION

[0039] The subject matter described herein will now be discussed with reference to example implementations. It should be understood that the discussion of these implementations is only to enable those skilled in the art to better understand and implement the subject matter described herein, and the functions and arrangements of the elements discussed may be changed without departing from the scope of protection of the contents of this specification. Various examples may omit, replace, or add various processes or components as needed. In addition, the features described in some examples may also be combined in other examples.

[0040] The invention provides Figure 1 - Figure 3 As shown, a withdrawable heat dissipation switch cabinet comprises a switch cabinet 11 and a heat dissipation fan 13, wherein a plurality of withdrawable switch boxes 12 are installed on the front of the switch cabinet 11;

[0041] An air inlet pipe 21 and an air outlet pipe 22 are provided inside the switch cabinet 11. The heat dissipation fan 13 supplies air through the air inlet pipe 21. The air outlet pipe 22 is used to discharge the air with heat out of the switch cabinet 11. The air inlet pipe 21 and the air outlet pipe 22 are both provided with a plurality of groups of docking pipes. The docking pipes are arranged correspondingly to the switch box 12. The inner side of the switch box 12 is provided with a docking hole 16 that matches the docking pipe. The docking pipe is provided with a sealing member 27 for fitting the docking hole 16.

[0042] like Figure 4 and Figure 5 As shown, when the butt-joint pipe is inserted into the butt-joint hole 16, the seal 27 is attached to the back of the switch cabinet 11 and also to the butt-joint hole 16 to ensure the sealing effect between the butt-joint pipe and the butt-joint hole 16;

[0043] The butt joint is provided with a filling and sealing assembly 28, an opening and closing assembly 29 and a trigger 210, and the trigger 210 is used to trigger the operation of the filling and sealing assembly 28 and the opening and closing assembly 29;

[0044] When the switch box 12 is inserted and installed inside the switch cabinet 11, the switch cabinet 11 triggers the trigger member 210, and the opening and closing component 29 controls the docking tube to be in an open state, so that only the docking tube connected to the switch box 12 can circulate heat dissipating air, and at the same time, the filling and sealing component 28 fills and seals the gap between the docking tube and the docking hole 16.

[0045] Working principle: air circulation system, the switch cabinet 11 is equipped with an air inlet pipe 21 and an air outlet pipe 22, the heat dissipation fan 13 supplies cold air to the switch cabinet 11 through the air inlet pipe 21, and the air outlet pipe 22 is responsible for discharging the air with heat out of the switch cabinet 11, forming a closed-loop air flow to achieve heat dissipation; the cooperation between the butt joint pipe and the switch box 12, the air inlet pipe 21 and the air outlet pipe 22 are both provided with a plurality of groups of butt joint pipes corresponding to the switch box 12, these butt joint pipes cooperate with the butt joint holes 16 on the inner side of the switch box 12 to achieve directional air flow and heat extraction; sealing and filling sealing assembly 28, the butt joint pipe is provided with a sealing member 27 and a filling sealing assembly 2 8. Ensure the sealing effect between the docking tube and the docking hole 16 to prevent air leakage and improve heat dissipation efficiency; trigger and control mechanism. The docking tube is also provided with an opening and closing component 29 and a trigger member 210. When the switch box 12 is inserted into the switch cabinet 11, the trigger member 210 is triggered, and the opening and closing component 29 controls the docking tube to open, so that only the docking tube of the inserted switch box 12 can circulate heat dissipation air; dynamic sealing. When the docking tube is inserted into the docking hole 16, the sealing member 27 is simultaneously attached to the back of the switch cabinet 11 and the docking hole 16 to ensure the sealing effect, and the filling sealing component 28 dynamically fills and seals the gap between the docking tube and the docking hole 16.

[0046] like Figure 3 and Figure 4 In order to achieve faster air flow and avoid the hot air staying in the switch box 12 for too long due to the slow air flow, thereby affecting the heat dissipation effect, one set of switch boxes 12 corresponds to two sets of docking tubes, which are used for air intake and air outlet respectively. The docking tubes include a first docking tube 23 and a second docking tube 24. The first docking tube 23 is arranged on the air inlet pipe 21, and the second docking tube 24 is arranged on the air outlet pipe 22. The heat dissipation air enters the switch box 12 through the first docking tube 23, and the second docking tube 24 draws the air with heat out of the switch box 12 to achieve faster air flow. Specifically, as Figure 5 As shown, the switch box 12 is provided with a plurality of heat dissipation holes. Under normal circumstances, when air cooling is performed on the switch box 12, air with a relatively low external temperature is introduced and generally exhausted through these heat dissipation holes. The exhaust effect of the heat dissipation holes is poor and a good heat dissipation effect cannot be obtained. Here, the air inlet and outlet form of the first butt joint pipe 23 and the second butt joint pipe 24 is adopted, so that convection is generated inside the switch box 12, and air circulation can be performed quickly to obtain a better heat dissipation effect.

[0047] like Figure 6 and Figure 7 As shown, regarding the specific implementation structure of the opening and closing component 29, the opening and closing component 29 is configured as an iris structure 291, and the iris structure 291 includes an opening and closing drive rod 293 and a plurality of groups of iris arc-shaped pieces 292, and the opening and closing drive rod 293 is used to control the opening and closing of the plurality of groups of iris arc-shaped pieces 292, and the trigger member 210 is movably mounted on the docking tube, and the switch box 12 pushes the trigger member 210 to move to drive the swing of the opening and closing drive rod 293, thereby realizing the opening of the plurality of groups of iris arc-shaped pieces 292, and the opening and closing component 29 also includes a reset structure for closing the iris structure 291.

[0048] like Figure 7 As shown, in actual use, in order to obtain a more effective sealing effect, it is generally used in conjunction with a seal 27. The iris structure 291 is installed on the seal 27. The seal 27 is provided with a makeshift groove 211 for the opening and closing drive rod 293 to make way for the installation. The reset structure is configured as a second reset spring 294. One end of the second reset spring 294 is connected to the groove wall of the makeshift groove 211, and the other end of the second reset spring 294 is connected to the opening and closing drive rod 293. When.

[0049] like Figure 7 , Fig.10 and Fig.11 As shown, regarding the switch box 12 pushing the trigger member 210 to move so as to drive the opening and closing driving rod 293 to swing, the specific triggering implementation method is that a threaded hole is opened on the sealing member 27, and a threaded winding post 296 is threadedly installed in the threaded hole, and a connecting wire 295 is wound on the threaded winding post 296, and the connecting wire 295 is connected to the opening and closing driving rod 293. The trigger member 210 is rotatably connected to the threaded winding post 296, and the switch box 12 pushes the trigger member 210 and the threaded winding post 296. The threaded winding post 296 rotates in the threaded hole while winding the connecting wire 295, and then the opening and closing driving rod 293 is pulled through the connecting wire 295 to realize the opening of the iris structure 291.

[0050] like Figure 7 , Figure 8 and Fig.10Regarding the implementation method of the filling and sealing component 28 to fill and seal the gap between the docking tube and the docking hole 16, the filling and sealing component 28 includes a sealing airbag ring 281 and an air storage tube 283, and a piston plate 286 is installed on the trigger member 210. The piston plate 286 is slidably inserted in the air storage tube 283, and the air storage tube 283 is connected to the sealing airbag ring 281 through a connecting tube 288. The switch box 12 pushes the trigger member 210 and the piston plate 286 to push the gas in the air storage tube 283 into the sealing airbag ring 281, so that the sealing airbag ring 281 gradually expands to fill the gap between the docking tube and the docking hole 16.

[0051] like Figure 8 and Fig.10 As shown, since the gas storage capacity inside the gas storage tube 283 is limited, in order to make the sealing airbag ring 281 obtain a greater deformation effect so as to achieve the sealing and filling effect of the sealing airbag ring 281, a plurality of groups of expansion air circles 282 are arranged inside the sealing airbag ring 281, and the plurality of groups of expansion air circles 282 are connected by connecting tubes 284, and the gas storage tube 283 is connected to the expansion air circle 282 inside the sealing airbag ring 281 through connecting tubes 288, and a plurality of groups of telescopic air columns 285 distributed in a ring array are arranged on the expansion air circle 282, and the plurality of groups of telescopic air columns 285 are radially supported inside the sealing airbag ring 281. Under the setting of the expansion air circle 282 and the plurality of groups of telescopic air columns 285, the gas supply inside the gas storage tube 283 can meet the deformation size requirement of the sealing airbag ring 281.

[0052] like Figure 7 and Fig.10 As shown, regarding the resetting method of the filling sealing assembly 28, a first resetting spring 287 is arranged inside the gas storage tube 283, one end of the first resetting spring 287 is supported on the inner end surface of the gas storage tube 283, and the other end is supported on the piston plate 286. When the switch box 12 is pulled out of the switch cabinet 11, the trigger member 210 is reset under the action of the first resetting spring 287, and the gas in the gas storage tube 283 returns to the sealing airbag ring 281, so that the sealing airbag ring 281 returns to its original state so that the docking tube and the docking hole 16 can be separated smoothly.

[0053] Specifically, a mounting bracket 15 is installed inside the switch cabinet 11, and a plurality of slots for inserting the switch box 12 are provided on the mounting bracket 15. An exhaust duct 25 is installed inside the switch cabinet 11. The second docking pipe 24 is connected to one end of the exhaust duct 25, and a blocking member 26 is provided at the other end of the exhaust duct 25.

[0054] like Figure 1 and Figure 2As shown, the heat dissipation fan 13 is arranged on the top of the switch cabinet 11, the air inlet pipe 21 and the air outlet pipe 22 are both arranged vertically, the front and back of the switch cabinet 11 are provided with exhaust holes 14 corresponding to the exhaust pipe 25, the exhaust pipe 22 is provided with an exhaust fan (not shown in the figure), and the second connecting pipe 24 exhausts the extracted hot air through the exhaust pipe 25 and the exhaust hole 14. Specifically, as Figure 1 and Figure 2 As shown, the exhaust holes 14 of the switch cabinet 11 are arranged on the front and back, and conventional heat dissipation switch cabinets are generally placed side by side. The front and back exhaust method can avoid heat dissipation interference between multiple heat dissipation switch cabinets placed side by side.

[0055] In summary, the present invention has the following comprehensive effects: modular heat dissipation, the pull-out heat dissipation switch cabinet 11 of the present invention is provided with multiple groups of docking pipes on the air inlet pipe 21 and the air outlet pipe 22, and these docking pipes are arranged corresponding to the switch box 12, so that only the switch box 12 inserted into the switch cabinet 11 is cooled by blowing air, and ineffective heat dissipation of the uninserted switch box 12 is avoided, thereby improving the heat dissipation efficiency and saving energy; air convection, the switch cabinet 11 is supplied with air and exhausted by two groups of docking pipes respectively, and air convection is generated inside the switch cabinet 11, so that the inside of the switch cabinet 11 has rapid air flow, and hot air is avoided from being retained inside the switch box 12, so as to achieve rapid and efficient heat dissipation effect; the opening and closing component 29, the filling sealing component 28, the opening and closing component 29 and the trigger component 210 are arranged on the docking pipe. When the switch box 12 is inserted into the switch cabinet 11, the trigger 210 is triggered, and the opening and closing component 29 controls the docking tube to be in an open state, so that only the docking tube connected to the switch box 12 can circulate heat dissipation air; filling and sealing, the gap between the docking tube and the docking hole 16 is filled and sealed by the filling and sealing component 28 to ensure that air does not leak from the gap, thereby improving the heat dissipation efficiency; iris structure 291, the opening and closing component 29 is set as an iris structure 291, including an opening and closing drive rod 293 and a plurality of groups of iris arc pieces 292, which control the opening and closing of the arc pieces to realize the opening and closing control of the docking tube; sealing airbag ring 281, the filling and sealing component 28 includes a sealing airbag ring 281 and an air storage tube 283, and when the switch box 12 is inserted, the trigger 210 and the piston plate 286 are pushed to push the gas in the air storage tube 283 into the sealing airbag ring 281, so that the airbag ring gradually expands to fill the gap between the docking tube and the docking hole 16.

[0056] Improve heat dissipation efficiency. Through rapid air convection and modular heat dissipation, hot air is prevented from being retained inside the switch box 12, thereby achieving a fast and efficient heat dissipation effect; energy saving. Only the inserted switch box 12 is cooled by blowing air, thereby avoiding air waste in large-scale air cooling and saving energy; modular heat dissipation function. Through the opening and closing component 29, the insertion action of the switch box 12 and the opening and closing state of the docking tube are linked, thereby realizing modular heat dissipation; good sealing performance. Through the filling sealing component 28, the insertion action of the switch box 12 and the expansion and contraction of the sealing airbag ring 281 are linked, thereby avoiding air leakage from the gap and improving the sealing performance; compact structure. The heat dissipation fan 13 is arranged on the top of the switch cabinet 11, and the air inlet pipe 21 and the air outlet pipe 22 are arranged vertically. The structure is compact and space-saving; easy to maintain. The design of the seal 27 and the filling sealing component 28 between the docking tube and the docking hole 16 makes maintenance and replacement more convenient; improve reliability. Through precise control of the flow and sealing of heat dissipation air, the reliability and service life of the switch cabinet 11 are improved.

[0057] The above describes an embodiment of the present invention, but this embodiment is not limited to the above specific implementation methods. The above specific implementation methods are merely illustrative and not restrictive. Under the guidance of this embodiment, ordinary technicians in this field can also make many forms, all of which are protected by this embodiment.

Claims

1. A withdrawable heat dissipation switch cabinet, comprising a switch cabinet and a heat dissipation fan, wherein a plurality of withdrawable switch boxes are installed on the front of the switch cabinet, characterized in that: The switch cabinet is provided with an air inlet duct and an air outlet duct. The heat dissipation fan supplies air through the air inlet duct. The air outlet duct is used to discharge the air with heat out of the switch cabinet. The air inlet duct and the air outlet duct are provided with a plurality of groups of butt joints. The butt joints and the switch box are provided in correspondence. The inner side of the switch box is provided with butt joint holes matching with the butt joints. The butt joints are provided with sealing members for fitting the butt joint holes. The butt joint is provided with a filling and sealing assembly, an opening and closing assembly and a trigger, and the trigger is used to trigger the operation of the filling and sealing assembly and the opening and closing assembly; When the switch box is inserted and installed inside the switch cabinet, the switch cabinet triggers the triggering member, and the opening and closing component controls the butt joint pipe to be in an open state, so that only the butt joint pipe plugged into the switch box can circulate heat dissipation air, and at the same time, the filling and sealing component fills and seals the gap between the butt joint pipe and the butt joint hole; The iris structure is mounted on the seal; The sealing member is provided with a clearance groove for the opening and closing driving rod to be installed in a clearance manner, and the reset structure is provided with a second reset spring, one end of the second reset spring is connected to the groove wall of the clearance groove, and the other end of the second reset spring is connected to the opening and closing driving rod; A threaded hole is provided on the sealing member, a threaded winding column is threadedly installed in the threaded hole, a connecting wire is wound on the threaded winding column, the connecting wire is connected to the opening and closing driving rod, the trigger member is rotatably connected to the threaded winding column, the switch box pushes the trigger member and the threaded winding column, the threaded winding column rotates in the threaded hole while winding the connecting wire, and then the opening and closing driving rod is pulled through the connecting wire to realize the opening of the iris structure; The filling and sealing assembly includes a sealing airbag ring and an air storage pipe. A piston plate is installed on the trigger member. The piston plate is slidably plugged into the air storage pipe. The air storage pipe is connected to the sealing airbag ring through a connecting pipe. The switch box pushes the trigger member and the piston plate to push the gas in the air storage pipe into the sealing airbag ring, so that the sealing airbag ring gradually expands to fill the gap between the docking pipe and the docking hole. A plurality of groups of expansion air circles are arranged inside the sealed air bag ring, the plurality of groups of expansion air circles are connected by connecting pipes, the air storage pipe is connected to the expansion air circles inside the sealed air bag ring through the connecting pipe, a plurality of groups of telescopic air columns distributed in a circular array are arranged on the expansion air circles, and the plurality of groups of telescopic air columns are radially supported inside the sealed air bag ring.

2. A withdrawable heat dissipation switch cabinet according to claim 1, characterized in that: The butt joint tube includes a first butt joint tube and a second butt joint tube. The first butt joint tube is arranged on the air inlet tube, and the second butt joint tube is arranged on the air outlet tube. The heat dissipating air enters the switch box through the first butt joint tube, and the second butt joint tube draws the hot air out of the switch box.

3. The withdrawable heat dissipation switch cabinet according to claim 1, characterized in that: The opening and closing component is configured as an iris structure, which includes an opening and closing drive rod and a plurality of groups of iris arc-shaped pieces. The opening and closing drive rod is used to control the opening and closing of the plurality of groups of iris arc-shaped pieces. The trigger member is movably installed on the docking tube. The switch box pushes the trigger member to move to drive the opening and closing drive rod to swing, thereby realizing the opening of the plurality of groups of iris arc-shaped pieces. The opening and closing component also includes a reset structure for closing the iris structure.

4. The withdrawable heat dissipation switch cabinet according to claim 1, characterized in that: A first return spring is arranged inside the gas storage pipe, one end of the first return spring is supported on the inner end surface of the gas storage pipe, and the other end is supported on the piston plate. When the switch box is pulled out of the switch cabinet, the trigger member is reset under the action of the first return spring, and the gas in the gas storage pipe returns to the sealing airbag ring, so that the sealing airbag ring returns to its original state so that the docking tube and the docking hole can be separated smoothly.

5. The withdrawable heat dissipation switch cabinet according to claim 2, characterized in that: An installation bracket is installed inside the switch cabinet, and a plurality of slots for inserting switch boxes are arranged on the installation bracket. An exhaust duct is installed inside the switch cabinet, the second butt joint is connected to one end of the exhaust duct, and a plugging piece is arranged at the other end of the exhaust duct.

6. The withdrawable heat dissipation switch cabinet according to claim 5, characterized in that: The heat dissipation fan is arranged on the top of the switch cabinet, the air inlet duct and the air outlet duct are both arranged vertically, the front and back of the switch cabinet are provided with exhaust holes corresponding to the exhaust duct, the air outlet duct is provided with an exhaust fan, and the second connecting pipe discharges the extracted hot air through the exhaust duct and the exhaust holes.

Images