A heat dissipation device for a steam-electric dual-drive steam turbine power distribution cabinet

Abstract

The present invention discloses a heat dissipation device for a steam-electric dual-drive steam turbine power distribution cabinet, including a power distribution cabinet. A heat dissipation mesh opening is fixedly installed on the side wall of the power distribution cabinet. A fan blade cleaning device for blowing and cleaning the heat dissipation fan blades is arranged inside the power distribution cabinet, and a moisture-proof dust removal device for collision dust removal and accompanying sealing is arranged inside the power distribution cabinet. Through the cooperation among the air inlet, the inner sliding rod, the pneumatic spring and the ventilation component, the elastic extrusion between the wind force of the heat dissipation fan and the pneumatic spring is utilized to realize the blowing and cleaning function of the heat dissipation fan when it stops working, so as to achieve the timely blade cleaning effect after each heat dissipation. In addition, through the cooperation among the winding wheel, the driving rope, the driving component and the sealing component, the driving winding generated by the wind force realizes the accompanying opening and closing function of the dust-proof baffle when the heat dissipation fan works and closes when it stops working.

Description

Technical Field

[0001] The present invention relates to the technical field of heat dissipation of power distribution cabinets, and particularly to a heat dissipation device for a steam-electric dual-drive steam turbine power distribution cabinet. Background Art

[0002] The purpose of setting up a power distribution cabinet is to facilitate the system to distribute power. When a line fails, it is beneficial to control the scope of the fault and also convenient to quickly find the fault point and eliminate it in time. Moreover, during the troubleshooting process, it is convenient to arrange line maintenance in sections, so that there is no need to carry out a large-area power outage operation process. The main components of the power distribution cabinet are: terminal blocks, various knife switches, protection equipment, measuring equipment, metering equipment, and various protection equipment. The protection equipment includes fuses to prevent short circuits and air switches to prevent overloads.

[0003] In the previous motor heat dissipation devices, it is necessary to regularly clean the heat dissipation mesh openings and heat dissipation fans of the power distribution cabinet. The operation is cumbersome and the cleaning efficiency is low. In addition, when the unused power distribution cabinet is placed idle, due to the ventilation of the heat dissipation openings, the internal components will be affected by moisture and dust accumulation, thus reducing the service life of the placed power distribution cabinet when it is used next time.

[0004] To solve the above problems, a heat dissipation device for a steam-electric dual-drive steam turbine power distribution cabinet is proposed. Summary of the Invention

[0005] The purpose of the present invention is to solve the disadvantages existing in the prior art, and a heat dissipation device for a steam-electric dual-drive steam turbine power distribution cabinet is proposed.

[0006] To achieve the above purpose, the present invention adopts the following technical solutions:

[0007] A heat dissipation device for a steam-electric dual-drive steam turbine power distribution cabinet, comprising:

[0008] A power distribution cabinet, on the side wall of which a heat dissipation mesh opening is fixedly installed;

[0009] A fan blade cleaning device for blowing and cleaning the heat dissipation fan blades is arranged inside the power distribution cabinet;

[0010] A sealing and dust removal device is arranged inside the power distribution cabinet through collision dust removal and moisture-proof dust removal with accompanying sealing.

[0011] Preferably, the fan blade cleaning device includes a connecting rod, a pneumatic sliding tube, an air inlet, a pneumatic extrusion piece, an inner sliding rod, a pneumatic spring, a driving component, and a ventilation component. The connecting rod is fixedly installed on the inner wall of one end of the power distribution cabinet close to the heat dissipation mesh opening. The side wall of the pneumatic sliding tube is fixedly connected to the other end of the connecting rod. The air inlet is fixedly installed at one end of the pneumatic sliding tube away from the heat dissipation mesh opening. The pneumatic extrusion piece is arranged inside the pneumatic sliding tube, and the side wall of the pneumatic extrusion piece is slidably connected to the inner side wall of the pneumatic sliding tube. The inner sliding rod is fixedly installed at one end of the pneumatic extrusion piece away from the air inlet, and a meshing block is arranged at the top end of the inner sliding rod. The pneumatic spring is fixedly installed between the inner sliding rod and the side wall of the power distribution cabinet;

[0012] The driving component includes a support plate, a meshing wheel rotating rod, and a meshing wheel. The support plate is fixedly installed on the side wall of the power distribution cabinet. The meshing wheel rotating rod is rotatably connected to the support plate. The meshing wheel is fixedly installed on the side wall of the meshing wheel rotating rod, and the rotating side wall of the meshing wheel meshes with the meshing block at the top end of the inner sliding rod;

[0013] The ventilation component includes a valve group block, a first air valve, and a second air valve. The valve group block is fixedly installed at the interface end of the air inlet away from the pneumatic sliding tube. The first air valve is fixedly installed on the middle side wall of the valve group block, and multiple second air valves are installed on the side wall of the valve group block.

[0014] Preferably, the sealing and dust removal component includes a winding wheel, a rope guiding limiting hole, a driving rope, a combined pull rod, a limiting sliding groove plate, and a sealing component. The winding wheel is fixedly installed on the side wall of one end of the meshing wheel rotating rod away from the support plate. The rope guiding limiting hole is fixedly installed on the side wall of the winding wheel. The driving rope is wound around the notch end of the winding wheel. The combined pull rod is fixedly connected to the other end of the driving rope. Multiple limiting sliding groove plates are fixedly installed on the side wall of the power distribution cabinet;

[0015] The sealing component includes a sliding groove rotating rod, a dust-proof baffle, and a rotating plate rotating rod. Multiple sliding groove rotating rods are slidably connected to the limiting sliding groove plates, and multiple sliding groove rotating rods are rotatably connected to the combined pull rod. The dust-proof baffle is fixedly installed between two sliding groove rotating rods on the same horizontal line. The rotating plate rotating rods are symmetrically installed at both ends of the dust-proof baffle with respect to the central axis of the dust-proof baffle, and the rotating plate rotating rods are rotatably connected to the side wall of the power distribution cabinet.

[0016] Preferably, one end of the pneumatic sliding tube away from the air inlet does not contact the inner wall of the power distribution cabinet. The gap between the pneumatic sliding tube and the power distribution cabinet is less than the length of the inner sliding rod. The cross-section of the side wall of the inner sliding rod is arranged in a concave structure, and the pneumatic spring always remains in a compressed state.

[0017] Preferably, the air inlet is arranged in a flared structure. A limiting ring is arranged at the interface end of the air inlet and the pneumatic sliding tube. The inner diameter of the inner ring of the limiting ring is smaller than the diameter of the pneumatic extrusion piece. The support plate is arranged at the top end of the connecting rod. A limiting block is arranged at the rotational connection of the support plate and the meshing rotating rod.

[0018] Preferably, the setting positions of the second air valves do not overlap with each other. The plurality of second air valves are evenly distributed around the first air valve as the center. The first air valve is arranged with a one-way valve port. The one-way valve port of the first air valve points from the inside of the power distribution cabinet to the inside of the air inlet. The plurality of second air valves are arranged with extrusion valve ports.

[0019] Preferably, the rope limiting hole is arranged on the protruding side wall of the winding wheel. The driving rope is fixedly connected to the side wall of the combined pull rod through the wire passing hole of the rope limiting hole.

[0020] Preferably, a limiting block is arranged at the rotational connection end of the sliding groove rotating rod and the combined pull rod. A spiral spring is arranged at the rotational interface of the rotating plate rotating rod and the power distribution cabinet. When the dust-proof baffle is sealed, the spiral spring does not deform. When the rotating plate rotating rod is opened, the spiral spring deforms.

[0021] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0022] 1. Through the cooperation between the air inlet, the inner sliding rod, the pneumatic spring and the ventilation assembly, the present invention utilizes the wind force of the cooling fan and the elastic force of the pneumatic spring to realize the blowing and cleaning function of the cooling fan when it stops working, so as to achieve the timely cleaning effect of the fan blades after each heat dissipation.

[0023] 2. Through the cooperation between the winding wheel, the driving rope, the driving assembly and the sealing assembly, the present invention realizes the accompanying opening and closing function of the dust-proof baffle when the cooling fan is working and closing when it stops by generating a driving winding by wind force. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is a schematic structural diagram of the power distribution cabinet of a steam-electric dual-drive steam turbine power distribution cabinet heat dissipation device proposed by the present invention;

[0025] Figure 2Schematic diagram of the internal structure of the power distribution cabinet of a steam - electric dual - drive steam turbine power distribution cabinet heat dissipation device proposed by the present invention;

[0026] Figure 3 Schematic diagram of the internal structure of the pneumatic sliding tube of a steam - electric dual - drive steam turbine power distribution cabinet heat dissipation device proposed by the present invention;

[0027] Figure 4 Schematic diagram of the internal structure of the inner sliding rod of a steam - electric dual - drive steam turbine power distribution cabinet heat dissipation device proposed by the present invention;

[0028] Figure 5 Schematic diagram of the winding wheel structure of a steam - electric dual - drive steam turbine power distribution cabinet heat dissipation device proposed by the present invention;

[0029] Figure 6 Schematic diagram of the dust - proof baffle structure of a steam - electric dual - drive steam turbine power distribution cabinet heat dissipation device proposed by the present invention;

[0030] Figure 7 Schematic diagram of the setting position of the air inlet valve of a steam - electric dual - drive steam turbine power distribution cabinet heat dissipation device proposed by the present invention.

[0031] In the figure: 1. Power distribution cabinet; 11. Heat dissipation mesh opening; 2. Connecting rod; 21. Pneumatic sliding tube; 22. Air inlet; 23. Pneumatic extrusion piece; 24. Inner sliding rod; 25. Pneumatic spring; 26. Support plate; 27. Meshing rotating rod; 28. Meshing wheel; 3. Winding wheel; 31. Rope guiding limiting hole; 32. Driving rope; 33. Combined pull rod; 34. Limiting chute plate; 35. Chute rotating rod; 36. Dust - proof baffle; 37. Rotating plate rotating rod; 4. Valve group block; 41. First valve; 42. Second valve. Detailed implementation manners

[0032] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments.

[0033] Refer to Figure 1-7 , a steam - electric dual - drive steam turbine power distribution cabinet heat dissipation device, comprising:

[0034] A power distribution cabinet 1, on the side wall of the power distribution cabinet 1, a heat dissipation mesh opening 11 is fixedly installed;

[0035] A fan blade cleaning device for blowing and cleaning the heat dissipation fan blades is arranged inside the power distribution cabinet 1;

[0036] A sealing and dust - removing device is arranged inside the power distribution cabinet 1 through impact dust removal and moisture - proof dust removal with accompanying sealing.

[0037] The present invention is further described in detail: The fan blade cleaning device includes a connecting rod 2, a pneumatic sliding tube 21, an air inlet 22, a pneumatic extrusion piece 23, an inner sliding rod 24, a pneumatic spring 25, a driving component, and a ventilation component. The connecting rod 2 is fixedly installed on the inner wall of one end of the power distribution cabinet 1 close to the heat dissipation mesh opening 11. The side wall of the pneumatic sliding tube 21 is fixedly connected to the other end of the connecting rod 2. The air inlet 22 is fixedly installed at one end of the pneumatic sliding tube 21 away from the heat dissipation mesh opening 11. The pneumatic extrusion piece 23 is arranged inside the pneumatic sliding tube 21, and the side wall of the pneumatic extrusion piece 23 is slidably connected to the inner side wall of the pneumatic sliding tube 21. The inner sliding rod 24 is fixedly installed at one end of the pneumatic extrusion piece 23 away from the air inlet 22. A meshing block is arranged at the top end of the inner sliding rod 24. The pneumatic spring 25 is fixedly installed between the inner sliding rod 24 and the side wall of the power distribution cabinet 1;

[0038] The driving component includes a support plate 26, a meshing wheel rotating rod 27, and a meshing wheel 28. The support plate 26 is fixedly installed on the side wall of the power distribution cabinet 1. The meshing wheel rotating rod 27 is rotatably connected to the support plate 26. The meshing wheel 28 is fixedly installed on the side wall of the meshing wheel rotating rod 27. The rotating side wall of the meshing wheel 28 meshes with the meshing block at the top end of the inner sliding rod 24;

[0039] The ventilation component includes a valve block 4, a first valve 41, and a second valve 42. The valve block 4 is fixedly installed at the interface end of the air inlet 22 away from the pneumatic sliding tube 21. The first valve 41 is fixedly installed on the middle side wall of the valve block 4. A plurality of second valves 42 are installed on the side wall of the valve block 4.

[0040] The present invention is further described in detail: The sealing and dust removal component includes a winding wheel 3, a rope guiding limiting hole 31, a driving rope 32, a combined pull rod 33, a limiting sliding groove plate 34, and a sealing component. The winding wheel 3 is fixedly installed on the side wall of one end of the meshing wheel rotating rod 27 away from the support plate 26. The rope guiding limiting hole 31 is fixedly installed on the side wall of the winding wheel 3. The driving rope 32 is wound around the notch end of the winding wheel 3. The combined pull rod 33 is fixedly connected to the other end of the driving rope 32. A plurality of limiting sliding groove plates 34 are fixedly installed on the side wall of the power distribution cabinet 1;

[0041] The sealing component includes a sliding groove rotating rod 35, a dust-proof baffle 36, and a rotating plate rotating rod 37. A plurality of sliding groove rotating rods 35 are slidably connected to the limiting sliding groove plates 34. A plurality of sliding groove rotating rods 35 are rotatably connected to the combined pull rod 33. The dust-proof baffle 36 is fixedly installed between two sliding groove rotating rods 35 on the same horizontal line. The rotating plate rotating rods 37 are symmetrically installed at both ends of the dust-proof baffle 36 with respect to the central axis of the dust-proof baffle 36. The rotating plate rotating rods 37 are rotatably connected to the side wall of the power distribution cabinet 1.

[0042] The present invention is further described in detail: One end of the pneumatic sliding tube 21 away from the air inlet 22 does not come into contact with the inner wall of the power distribution cabinet 1. The distance between the pneumatic sliding tube 21 and the power distribution cabinet 1 is less than the length of the inner sliding rod 24. The side wall cross-section of the inner sliding rod 24 is arranged in a concave structure, and the pneumatic spring 25 always remains in a compressed state.

[0043] The present invention is further described in detail: The air inlet 22 is arranged in a flared structure. A limiting ring is provided at the interface end of the air inlet 22 and the pneumatic sliding tube 21. The inner diameter of the limiting ring is smaller than the diameter of the pneumatic extrusion piece 23. The support plate 26 is arranged at the top end of the connecting rod 2. A limiting block is provided at the rotating connection of the support plate 26 and the meshing wheel rotating rod 27.

[0044] The present invention is further described in detail: The setting positions of the second air valves 42 and the first air valve 41 do not overlap. A plurality of second air valves 42 are evenly distributed around the first air valve 41 as the center. The first air valve 41 is provided with a one-way valve port. The one-way valve port of the first air valve 41 points from the inside of the power distribution cabinet 1 to the inside of the air inlet 22. A plurality of second air valves 42 are provided with extrusion valve ports.

[0045] The present invention is further described in detail: The rope guiding limiting hole 31 is arranged on the convex side wall of the winding wheel 3. The driving rope 32 is fixedly connected to the side wall of the combined pull rod 33 through the wire passing hole of the rope guiding limiting hole 31.

[0046] The present invention is further described in detail: A limiting block is provided at the rotating connection end of the sliding groove rotating rod 35 and the combined pull rod 33. A clockwork spring is provided at the rotating interface of the rotating plate rotating rod 37 and the power distribution cabinet 1. When the dust-proof baffle 36 is sealed, the clockwork spring does not deform. When the rotating plate rotating rod 37 is opened, the clockwork spring deforms.

[0047] The first beneficial point of the present invention is described below:

[0048] Before the work starts, the centers of the cooling fans arranged inside the power distribution cabinet 1 and the valve block 4 are on the same horizontal line. The sizes of the port ends of the first air valve 41 and the second air valves 42 can be adjusted according to specific conditions. Both the pneumatic extrusion piece 23 and the inner sliding rod 24 are made of light materials. When the cooling fan works, since sufficient heat dissipation is required inside the power distribution cabinet 1, the wind force of the cooling fan is much greater than the elastic force of the pneumatic spring 25;

[0049] According to Figure 7It can be known that when the internal cooling fan of the power distribution cabinet 1 is turned on, due to the one-way valve port setting of the first air valve 41, and the single-line valve port of the first air valve 41 points from the cooling fan end to the inside of the air inlet 22, the wind blown by the cooling fan can enter the inside of the air inlet 22 through the first air valve 41. And because the second air valve 42 adopts a squeezing valve port setting, under the action of the wind force being much greater than the elastic force of the pneumatic spring 25, part of the rebounding wind inside the air inlet 22 is discharged through the second air valve 42. However, due to the consumption of squeezing, the wind force of the rebounding wind is small and will not affect the normal heat dissipation process;

[0050] According to Figure 3 It can be known that when the wind force enters the inside of the pneumatic slide tube 21, it starts to push the pneumatic extrusion piece 23 and the inner slide rod 24 to start moving. During this process, the pneumatic spring 25 is squeezed. Since the side wall cross-section of the inner slide rod 24 adopts a concave structure setting, the frictional force inside the tube between the inner slide rod 24 and the pneumatic slide tube 21 is reduced under the condition of reducing the contact surface. At the same time, due to the limit ring setting at the port of the pneumatic extrusion piece 23, and the inner diameter of the limit ring is smaller than the diameter of the pneumatic extrusion piece 23, the pneumatic extrusion piece 23 will not pop out of the inside of the pneumatic slide tube 21 under the action of the pneumatic spring 25 that is always in a compressed state. At the same time, because the interval between the pneumatic slide tube 21 and the power distribution cabinet 1 is smaller than the length of the inner slide rod 24, the phenomenon of the inner slide rod 24 slipping out of the tube will not occur during the wind force extrusion process;

[0051] When the heat dissipation work is over and the cooling fan stops working, during the process of the wind pressure received by the pneumatic extrusion piece 23 slowly disappearing, when it reaches a certain critical value, the pneumatic spring 25 starts to push the pneumatic extrusion piece 23 and the air inlet 22 to perform a recovery movement. Since the first air valve 41 is a one-way valve port setting, the second air valve 42 conducts ventilation work under the extrusion action of the internal pneumatic extrusion piece 23 on the gas. At this moment, the second air valve 42 blows and cleans the cooling fan;

[0052] According to the content described in the text, it can be known that: through the cooperation of the air inlet 22, the inner slide rod 24, the pneumatic spring 25 and the ventilation component, the present invention utilizes the elastic force extrusion between the wind force of the cooling fan and the pneumatic spring 25 to realize the blowing and cleaning function of the cooling fan when it stops working, so as to achieve the timely cleaning effect of the fan blades after each heat dissipation;

[0053] The second beneficial point of the present invention is described below:

[0054] Before the work starts, the middle part of the dust-proof baffle 36 is made of extensible material;

[0055] According to Figure 3It can be seen that when the cooling fan is working, the movement of the inner sliding rod 24 drives the meshing wheel 28 to move, and the meshing wheel rotating rod 27 starts to rotate. Since a limiting block is provided at the rotating end of the meshing wheel rotating rod 27 and the support plate 26, the meshing wheel rotating rod 27 will not tilt during rotation;

[0056] According to Figure 5 It can be seen that at this time, the winding wheel 3 starts to rotate with the rotation of the meshing wheel rotating rod 27, and thus starts the winding process of the driving rope 32;

[0057] According to Figure 6 It can be seen that during the process of the driving rope 32 being wound and coiled, the combined pull rod 33 is pulled to displace inward. Due to the setting of the limiting chute plate 34, the combined pull rod 33 is limited on the path of the inward position. At this time, the chute rotating rod 35 rotatably connected to the combined pull rod 33 slides inside the limiting chute plate 34. Since the rotating plate rotating rod 37 is rotatably connected to the side wall of the power distribution cabinet 1, during the displacement of the chute rotating rod 35, since the middle part of the dust-proof baffle 36 uses an extensible material, when the dust-proof baffle 36 is displaced to the end opposite to the initial position, the entire sealing device is opened and the network port starts to ventilate;

[0058] According to Figure 2 It can be seen that during the opening process, the outer end of the dust-proof baffle 36 collides with the heat dissipation network port 11, thereby colliding and raising the dust at the port of the heat dissipation network port 11, and cooperating with the cooling air coming out of the opening and closing air vents between the dust-proof baffles 36 for cleaning;

[0059] According to Figure 6 It can be seen that when the work is over, the inner sliding rod 24 is reset, and the meshing wheel 28 rotates simultaneously. Since a clockwork spring is provided between the rotating plate rotating rod 37 and the rotating side wall of the power distribution cabinet 1, the clockwork spring pulls the rotating plate rotating rod 37 to rotate and reset, and at the same time pulls the combined pull rod 33 to displace outward, and returns to the sealed state again;

[0060] According to the content described in the text, it can be known that: through the cooperation of the winding wheel 3, the driving rope 32, the driving assembly and the sealing assembly, the present invention realizes the accompanying opening and closing function of the dust-proof baffle 36 when the cooling fan is working and closing when it stops by generating driving winding by wind force.

[0061] The above is only a preferred specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present invention, according to the technical solution of the present invention and its inventive concept, makes equivalent substitutions or changes, and should be covered by the protection scope of the present invention.

Claims

1. A heat dissipation device for a steam-electric dual-drive steam turbine power distribution cabinet, Comprising: A power distribution cabinet, with a heat dissipation mesh opening fixedly installed on the side wall of the power distribution cabinet; A fan blade cleaning device, which is arranged inside the power distribution cabinet and is used to blow and clean the heat dissipation fan blades; A sealing and dust removal device, which is arranged inside the power distribution cabinet for moisture-proof dust removal through collision dust removal and accompanying sealing; The fan blade cleaning device includes a connecting rod, a pneumatic sliding tube, an air inlet, a pneumatic extrusion piece, an inner sliding rod, a pneumatic spring, a driving component and a ventilation component. The connecting rod is fixedly installed on the inner wall of the power distribution cabinet near one end of the heat dissipation mesh opening. The side wall of the pneumatic sliding tube is fixedly connected to the other end of the connecting rod. The air inlet is fixedly installed at the end of the pneumatic sliding tube away from the heat dissipation mesh opening. The pneumatic extrusion piece is arranged inside the pneumatic sliding tube. The side wall of the pneumatic extrusion piece is slidably connected to the inner side wall of the pneumatic sliding tube. The inner sliding rod is fixedly installed at the end of the pneumatic extrusion piece away from the air inlet. A meshing block is arranged at the top of the inner sliding rod. The pneumatic spring is fixedly installed between the inner sliding rod and the side wall of the power distribution cabinet; The driving component includes a support plate, a meshing wheel rotating rod and a meshing wheel. The support plate is fixedly installed on the side wall of the power distribution cabinet. The meshing wheel rotating rod is rotatably connected to the support plate. The meshing wheel is fixedly installed on the side wall of the meshing wheel rotating rod. The rotating side wall of the meshing wheel is meshed with the meshing block at the top of the inner sliding rod; The ventilation component includes a valve group block, a first air valve and a second air valve. The valve group block is fixedly installed at the interface end of the air inlet away from the pneumatic sliding tube. The first air valve is fixedly installed on the middle side wall of the valve group block. A plurality of second air valves are installed on the side wall of the valve group block; The sealing and dust removal device includes a winding wheel, a rope guiding limiting hole, a driving rope, a combined pull rod, a limiting sliding groove plate and a sealing component. The winding wheel is fixedly installed on the side wall of the meshing wheel rotating rod away from the support plate end. The rope guiding limiting hole is fixedly installed on the side wall of the winding wheel. The driving rope is wound around the notch end of the winding wheel. The combined pull rod is fixedly connected to the other end of the driving rope. A plurality of limiting sliding groove plates are fixedly installed on the side wall of the power distribution cabinet; The sealing component includes a sliding groove rotating rod, a dust-proof baffle and a rotating plate rotating rod. A plurality of sliding groove rotating rods are slidably connected to the limiting sliding groove plates. A plurality of sliding groove rotating rods are rotatably connected to the combined pull rod. The dust-proof baffle is fixedly installed between two sliding groove rotating rods on the same horizontal line. The rotating plate rotating rods are symmetrically installed at both ends of the dust-proof baffle with respect to the central axis of the dust-proof baffle. The rotating plate rotating rods are rotatably connected to the side wall of the power distribution cabinet.

2. The heat dissipation device for a steam-electric dual-drive steam turbine power distribution cabinet according to claim 1, Characterized in that, One end of the pneumatic sliding tube (21) away from the air inlet (22) does not contact the inner wall of the power distribution cabinet (1). The interval between the pneumatic sliding tube (21) and the power distribution cabinet (1) is smaller than the length of the inner sliding rod (24). The side wall cross-section of the inner sliding rod (24) is arranged in an inwardly concave structure. The pneumatic spring (25) always remains in a compressed state.

3. The heat dissipation device for a steam-electric dual-drive steam turbine power distribution cabinet according to claim 1, Characterized in that, The air inlet (22) is provided with a flared structure. A limiting ring is provided at the interface end of the air inlet (22) and the pneumatic slide tube (21). The inner diameter of the limiting ring is smaller than the diameter of the pneumatic extrusion piece (23). The support plate (26) is arranged at the top end of the connecting rod (2). A limiting block is provided at the rotational connection of the support plate (26) and the meshing wheel rotating rod (27).

4. A heat dissipation device for a steam-electric dual-drive steam turbine power distribution cabinet according to claim 1, characterized in that, the second air valve (42) and the first air valve (41) are arranged at non-overlapping positions. A plurality of the second air valves (42) are evenly distributed around the first air valve (41). The first air valve (41) is provided with a one-way valve port. The one-way valve port of the first air valve (41) points from the inside of the power distribution cabinet (1) to the inside of the air inlet (22). A plurality of the second air valves (42) are provided with extrusion valve ports.

5. A heat dissipation device for a steam-electric dual-drive steam turbine power distribution cabinet according to claim 1, characterized in that, the rope guiding limiting hole (31) is arranged on the protruding side wall of the winding wheel (3). The driving rope (32) is fixedly connected between the side wall of the combined pull rod (33) through the wire passing hole of the rope guiding limiting hole (31).

6. A heat dissipation device for a steam-electric dual-drive steam turbine power distribution cabinet according to claim 1, characterized in that, a limiting block is provided at the rotational connection end of the sliding groove rotating rod (35) and the combined pull rod (33). A hairspring is provided at the rotational interface of the rotating plate rotating rod (37) and the power distribution cabinet (1). When the dust-proof baffle (36) is sealed, the hairspring does not deform. When the rotating plate rotating rod (37) is opened, the hairspring deforms.

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