CN213953940U

CN213953940U - Lightweight, efficient, energy-saving and explosion-proof roof fan system for steam turbine room of nuclear power plant

Info

Publication number: CN213953940U
Application number: CN202022695779.7U
Authority: CN
Inventors: 张琦; 谢云川; 黄雪刚; 赵林
Original assignee: Zhejiang Shangfeng High Tech Special Wind Industry Co ltd
Current assignee: Zhejiang Shangfeng High Tech Special Wind Industry Co ltd
Priority date: 2020-11-19
Filing date: 2020-11-19
Publication date: 2021-08-13
Anticipated expiration: 2030-11-19

Abstract

The utility model discloses a light-weight high-efficiency energy-saving explosion-proof roof fan system for a steam turbine room of a nuclear power plant, which comprises a light-weight explosion-proof roof fan, a fan frequency conversion control cabinet for controlling the light-weight explosion-proof roof fan, and an indoor temperature sensor connected to the fan frequency conversion control cabinet; lightweight explosion-proof roof fan includes aluminum alloy electric air valve, locates the rain-proof hood of roof fan of aluminum alloy electric air valve top, locates PMSM on the rain-proof hood of roof fan, be used for connecting PMSM with the motor bracket component of the rain-proof hood of roof fan, locate last lightweight cavity aluminum impeller of PMSM.

Description

Lightweight, efficient, energy-saving and explosion-proof roof fan system for steam turbine room of nuclear power plant

Technical Field

The utility model belongs to ventilation blower field for the steam turbine room of nuclear power plant especially relates to a lightweight energy-efficient explosion-proof roof fan system for steam turbine room of nuclear power plant.

Background

The existing explosion-proof roof fan system for the steam turbine room of the nuclear power plant adopts a common power frequency motor to directly start and adopts a solid axial flow fan impeller/blade, so that the whole machine has the advantages of heavy weight, large volume, high motor temperature, low efficiency and small starting torque, and a special tool and equipment assembly is required to be matched when equipment is maintained; and the fan can only output full power at a fixed frequency during operation, the rotating speed and frequency of the motor cannot be adjusted according to the temperature requirement, and the defects of solidified output frequency, high energy consumption, old process and the like exist.

SUMMERY OF THE UTILITY MODEL

The utility model discloses an overcome prior art not enough, provide a simple structure, light in weight, small, the motor temperature rise is low, efficient, starting torque is big, the operation output frequency is nimble, maintain convenient nuclear power plant is lightweight energy-efficient explosion-proof roof fan system for steam turbine room.

In order to achieve the above purpose, the utility model adopts the following technical scheme: a light-weight high-efficiency energy-saving explosion-proof roof fan system for a steam turbine room of a nuclear power plant comprises a light-weight explosion-proof roof fan, a fan frequency conversion control cabinet for controlling the light-weight explosion-proof roof fan, and an indoor temperature sensor connected to the fan frequency conversion control cabinet; the lightweight explosion-proof roof fan comprises an aluminum alloy electric air valve, a roof fan rainproof hood arranged above the aluminum alloy electric air valve, a permanent magnet synchronous motor arranged on the roof fan rainproof hood, a motor support assembly used for connecting the permanent magnet synchronous motor and the roof fan rainproof hood, and a lightweight hollow aluminum impeller arranged on the permanent magnet synchronous motor; the fan frequency conversion control cabinet comprises a voltage and current display instrument, a button indicator lamp arranged on one side of the voltage and current display instrument, a frequency converter display terminal used for displaying the use state of the fan and a special frequency converter for controlling the permanent magnet motor of the permanent magnet synchronous motor.

The utility model adopts the permanent magnet synchronous motor to replace the common three-phase asynchronous motor, and utilizes the hollow aluminum alloy impeller to replace the solid impeller/blade, so that the weight of the motor is reduced by 50-70% compared with the weight of the common motor under the same output power, and simultaneously, the starting torque of the fan is reduced, and the weight of the fan body is reduced; meanwhile, in order to deal with the particularity of starting and running of the permanent magnet motor, the utility model also designs a fan control frequency conversion cabinet, the frequency converter drives the running of the permanent magnet motor, and in order to realize the automatic regulation of the motor frequency and the rotating speed of the temperature, the utility model also designs an indoor temperature sensor to transmit the indoor temperature, and the PID regulation is carried out according to the indoor temperature and the internal temperature set value, and the permanent magnet synchronous motor is driven by outputting proper frequency to lead the fan to run under the optimal working condition; and then through the above-mentioned setting, make the utility model discloses reached simple structure, light in weight, small, the motor temperature rise is low, efficient, starting torque is big, operation output frequency is nimble, advantage such as maintenance convenience.

The rain-proof hood of the roof fan comprises a rain-proof hood of the roof fan, a first driving piece, a second driving piece, a rotating roller, a plurality of through grooves, a plurality of convex plates, a plurality of deicing devices, a plurality of snow removing devices and a plurality of stop blocks, wherein the rain-proof hood of the roof fan is arranged on the roof fan; the deicing device comprises a deicing block arranged on the rotating roller, a connecting hole arranged on the deicing block, a connecting rod arranged on the connecting hole, a rotating rod arranged at one end of the connecting rod, and a plurality of first gear teeth arranged on the rotating rod; the rotating roller can rotate relative to the rain-proof hood of the roof fan, the deicing devices are identical in structure and symmetrically arranged, the snow removing devices are identical in structure and symmetrically arranged, the connecting rod can move relative to the connecting hole, the rotating rod can rotate relative to the connecting rod, the first gear teeth and the convex plate are arranged in a matched mode, and the stop block can rotate relative to the rotating roller; by the arrangement of the ice blocks, when the rain-proof hood of the roof fan needs to be deiced, the first driving piece is started to drive the second driving piece and the rotating roller to move upwards, after the deicing device moves upwards along with the rotating roller and penetrates out of the through groove, the second driving piece is started to drive the rotating roller to rotate, so that the deicing block rotates along with the rotating roller, and the ice layer covered on the rain-proof hood of the roof fan is scraped by removing the ice blocks, so as to avoid the condition that the rain-proof hood of the roof fan is frozen by the ice layer because the ice layer is covered on the rain-proof hood of the roof fan, thereby avoiding the conditions of water leakage and the like caused by the frost damage of the rain-proof hood of the roof fan, prolonging the service life of the equipment, reducing the maintenance cost of the equipment, meanwhile, when ice blocks are removed to remove ice on the ice layer, the position of the through groove can be blocked through the snow removing device, and the condition that crushed ice falls downwards from the through groove is avoided.

The deicing device also comprises a worm which is arranged on the rotating roller in a penetrating way and one end of the worm is connected with the connecting rod, and a plurality of deicing assemblies which are arranged on the rotating rod; the deicing assembly comprises a first transmission belt arranged on the rotating rod, a threaded sleeve arranged on the first transmission belt, a push plate arranged on the first transmission belt, a drive plate arranged on one side of the push plate, a press plate arranged on the rotating rod, a moving plate arranged on the rotating rod, a first elastic piece used for connecting the moving plate and the rotating rod, and a plurality of scraping pieces arranged on the moving plate; the worm can rotate relative to the rotating rod, the deicing assemblies are identical in structure and symmetrically arranged, the first transmission belt can rotate relative to the rotating rod, the threaded sleeve and the worm are arranged in a matched mode, the movable plate can move relative to the rotating rod, and the scraping blade is obliquely arranged; through the arrangement of the scraping blade, when the deicing block rotates under the driving of the rotating roller, the first gear teeth can be in mutual contact with the convex plate, the rotating rod is driven to rotate through the matching between the convex plate and the first gear teeth, then the scraping blade can rotate along with the rotating rod and scrape an ice layer, simultaneously when the rotating rod rotates, the worm can rotate relative to the rotating rod, simultaneously, the first driving belt rotates through the matching between the worm and the thread sleeve, when the first driving belt rotates, the pushing plate can push the driving plate and further drive the moving plate to move, so that the scraping blade on the moving plate moves along with the rotating rod, further, the scraping blade can move like one side while rotating and scraping the ice layer, the scraping effect of the scraping blade is increased, the crushing and scraping effect of the ice layer are improved, and after the pushing plate moves to the other end of the first driving belt, the push plate can be separated from the drive plate at the turning position of the first drive belt, so that the movable plate is reset under the drive of the first elastic piece, the situation that the scraping effect of the scraping blade on the ice layer is poor due to the fact that the movable plate cannot reset is avoided, and the stability of the equipment in use is improved; through the setting of clamp plate, in the position of worm and thread bush mutual contact, can carry out spacingly to first driving band and thread bush through the clamp plate, increase the cooperation effect between thread bush and the worm, avoided the too big and unable driving thread bush of worm that leads to in space between thread bush and the worm and the first driving band condition of carrying out the pivoted.

The deicing device further comprises a pressing block arranged on the rotating roller and a dismounting assembly arranged on the connecting rod; the disassembling component comprises two chamfered parts arranged at two ends of the connecting hole, a second elastic part used for connecting the connecting rod and the ice removing block, two limiting balls arranged on the connecting rod, two first telescopic rods respectively used for connecting the two limiting balls and the connecting rod, two third elastic parts respectively sleeved on the two first telescopic rods, two rotating arc plates arranged on the rotating roller, a first connecting wire penetrating the rotating roller and connecting the two rotating arc plates, two moving tracks arranged on the rotating roller, a moving block arranged on the moving track, two fourth elastic parts respectively used for connecting the moving block and the two moving tracks, a pull rod arranged on the moving block, a moving groove arranged on the rotating roller, a pull block arranged on the moving groove, a top plate arranged on one side of the pull block, a first elastic part arranged on the two first telescopic rods, a second elastic part arranged on the two second telescopic rods, a second, The second connecting line is used for connecting the pulling block and the moving block, and the guide roller is arranged on the rotating roller; the pressing block and the top plate are arranged in a matched mode, the chamfering part and the limiting ball are arranged in a matched mode, the rotating arc plate and the limiting ball are arranged in a matched mode, a torsion spring is arranged in the rotating arc plate, one end of the torsion spring is connected to the rotating arc plate, the other end of the torsion spring is connected to the rotating roller, the first connecting wire can move relative to the rotating roller, the moving block can move relative to the moving track, the pull rod and the first connecting wire are arranged in a matched mode, and the pulling block can move relative to the moving groove; through the arrangement of the rotating arc plates and the limiting balls, when the connecting rod and the rotating rod need to be disassembled, the pressing block is pressed downwards and the top plate is pushed through the pressing block, so that the top plate drives the pulling block to move downwards, then the pulling block pulls the moving block to move along the moving track through the second connecting wire in the downward moving process, the pulling rod can be pulled to move in the moving process of the moving block, meanwhile, the first connecting wire can be pulled by the pulling rod, the first connecting wire is moved and drives the two rotating arc plates to turn over, further, the rotating arc plates and the limiting balls are separated from each other, then, the connecting rod is driven by the elasticity of the connecting rod to pop out by the second elastic piece, the disassembling steps of the connecting rod and the rotating rod are facilitated, when the connecting rod and the rotating rod need to be assembled, one end of the connecting rod is aligned to the position of the connecting hole, and then the connecting rod is inserted into the connecting hole, meanwhile, the rotating arc plate is jacked open by the limiting ball, and then the rotating arc plate is reset and then fixes the limiting ball, so that the situation that the connecting rod moves outwards again is avoided, and the stability of the fixing of the connecting rod and the rotating rod is improved; through the arrangement of the chamfering part, when the connecting rod is disassembled and assembled, the position of the hole can be limited by the limiting ball, and the limiting ball can be guided to the inner side of the connecting rod through the chamfering part, so that the situation that the limiting ball is damaged due to interference between the limiting ball and the connecting hole is avoided, and the maintenance cost of equipment is reduced; through the setting of guide roll, when drawing a pulling block pulling second connecting wire and removing, can lead to the second connecting wire through the guide roll, avoided the second connecting wire moving direction skew to appear and the movable block displacement distance that leads to is not enough the condition, and then avoided first connecting wire pulling distance not enough and the rotation arc board upset angle that leads to not enough the condition, thereby avoided rotating the unable and rotation arc board condition that breaks away from each other of spacing ball that the arc board upset angle is not enough and lead to, stability when having increased the equipment use.

The snow removing device comprises a snow removing block arranged on the rotating roller, a rotating plate arranged on the snow removing block, a second telescopic rod arranged on the snow removing block, a fifth elastic piece used for connecting the snow removing block and the second telescopic rod, a third telescopic rod arranged on the snow removing block, a limiting hole arranged on the rotating roller and a connecting strip used for connecting the second telescopic rod and the third telescopic rod; the snow removing block can rotate relative to the rotating roller, the rotating plate can rotate relative to the snow removing block, the third telescopic rod and the limiting hole are arranged in a matched mode, the connecting strip is hinged to the second telescopic rod, and the connecting strip is hinged to the third telescopic rod; through the arrangement of the rotating plate, when the deicing device is used, the snow removing block is blocked in the through groove, the snow removing block can rotate relative to the rotating roller at the moment, so that when the rotating roller drives the ice removing block to rotate, the through groove can be shielded through the snow removing block, when the first driving piece drives the rotating roller to ascend again, the snow removing block can move upwards to penetrate out of the through groove and shield the through groove through the stop block, the rotating plate can turn outwards at the moment, meanwhile, the second telescopic rod extends under the pushing of the fifth elastic piece, the third telescopic rod is driven by the connecting strip to extend in the extending process of the second telescopic rod, so that one end of the third telescopic rod is inserted into the limiting hole, the snow removing block and the rotating roller are limited and fixed through the matching of the third telescopic rod and the limiting hole, then, the first driving piece is started to drive the rotating roller to rotate, and the snow removing block rotates along with the rotating roller, and strike off the snow on the rain-proof hood of roof fan at snow removing piece pivoted in-process, avoided the snow too much and the driving piece radiating effect circumstances such as motor that leads to worsen, increased the life of equipment.

The snow removing device further comprises two driving rollers arranged on the snow removing block, a plurality of second gear teeth arranged on one of the two driving rollers, a gear arranged on the snow removing block, a second transmission belt sleeved on the two driving rollers, a convex block arranged on the other of the two driving rollers, a fourth telescopic rod arranged on the snow removing block, a fifth telescopic rod arranged on the snow removing block, a guide rod arranged on the snow removing block and a plurality of snow removing components arranged on the second transmission belt; the driving roller can rotate relative to the snow removing block, the plurality of second gear teeth and the gear are arranged in a matched mode, the lug is arranged in a matched mode with the fourth telescopic rod, the fourth telescopic rod and the fifth telescopic rod are arranged in a matched mode, and the plurality of snow removing assemblies are identical in structure and are symmetrically arranged; through the setting of gear, when snow removing piece rotates and strikes off snow, the gear can contact the flange and drive the gear through the flange and rotate, drives the drive roller through the cooperation of gear and the second teeth of a cogwheel when gear revolve and rotates for the second drive belt rotates under the drive of drive roller, and drives the snow removing subassembly through the second drive belt and remove, has increased the effect when snow removing device uses, has improved the efficiency of snow removing.

The snow removing assembly comprises a snow removing plate arranged on the second transmission belt, a fixed block arranged on the second transmission belt, a connecting block arranged on one side of the fixed block, a sixth elastic element used for connecting the connecting block and the fixed block, a connecting rod used for connecting the connecting block and the snow removing plate, a limiting plate arranged on the connecting block, a clamping block arranged on the connecting block, a clamping plate arranged on the fixed block and a seventh elastic element used for connecting the clamping plate and the fixed block; the snow removing plate can rotate relative to the second transmission belt, the connecting block can move relative to the second transmission belt, the connecting rod is hinged to the snow removing plate, the connecting rod is hinged to the connecting block, the fifth telescopic rod is matched with the limiting plate, the clamping plate is matched with the clamping block, the guide rod is matched with the clamping plate, and the clamping plate can rotate relative to the fixing block; through the arrangement of the snow removing plate, when the second transmission belt drives the snow removing plate to move, the snow removing plate can be used for sweeping the snow, and the swept snow is pushed into the cleaning device, so that the snow removing effect is improved; through the arrangement of the connecting block and the connecting rod, when the snow removing plate moves to the other end under the driving of the second driving belt, the convex block on the driving roller can extrude the fourth telescopic rod, so that the fourth telescopic rod contracts and extrudes the gas in the fourth telescopic rod into the fifth telescopic rod, then the fifth telescopic rod extends, at the moment, the connecting block moves to one side of the fifth telescopic rod under the driving of the second driving belt, then the limiting plate on the connecting block is contacted with the fifth telescopic rod, and the limiting plate and the connecting block are driven to move to the position of the fixing block through the blocking of the fifth telescopic rod, so that the connecting block is limited and fixed by the mutual buckling of the clamping plate and the clamping plate, when the connecting block is fixed, the driving roller continues to rotate and drives the convex block to rotate, so that the convex block is separated from the position of the fourth telescopic rod, and further the fourth telescopic rod extends to reset, therefore, the fifth telescopic rod contracts, then the connecting block and the fixing block continue to move under the driving of the second driving belt, the damage of the limiting plate or the fifth telescopic rod caused by interference between the limiting plate and the fifth telescopic rod is avoided, the service life of the equipment is prolonged, meanwhile, when the connecting block is fixed on one side of the fixing block, the connecting block can pull the snow removing plate to rotate through the connecting rod, so that the snow removing plate rotates to be close to a horizontal state from a state perpendicular to the second driving belt, and further, when the snow removing plate resets under the driving of the second driving belt, the situation that accumulated snow is swept back to the direction of the rotary roller is avoided, and the snow removing effect is improved; when the snowboard resets to the initial position back under the drive of second drive belt, the guide rod can contact one side of cardboard to drive the cardboard and rotate under the drive of cardboard, and then make cardboard and fixture block break away from each other, the connecting block resets under the spring action of sixth elastic component afterwards, and drive the snowboard and reset, and then remove the snow through the snowboard to the rain-proof hood of roof fan once more, the effect and the efficiency of removing the snow have been improved.

To sum up, the utility model has the advantages of it is following: the motor has the advantages of simple structure, light weight, small volume, low motor temperature rise, high efficiency, large starting torque, flexible operation output frequency and convenient maintenance.

Drawings

Fig. 1 is a schematic structural diagram of the present invention.

Fig. 2 is a side view of the present invention.

Fig. 3 is a cross-sectional view taken along line a-a of fig. 2 according to the present invention.

Fig. 4 is a partially enlarged view of a portion a in fig. 3 according to the present invention.

Fig. 5 is a partially enlarged view of a portion a in fig. 4 according to the present invention.

Fig. 6 is a partially enlarged view of the point B in fig. 4 according to the present invention.

Fig. 7 is a partially enlarged view of the point C in fig. 4 according to the present invention.

Fig. 8 is a partial enlarged view of the portion D in fig. 4 according to the present invention.

Fig. 9 is a partially enlarged view of the point B in fig. 3 according to the present invention.

Fig. 10 is a cross-sectional view taken along line B-B of fig. 2 according to the present invention.

Fig. 11 is a partially enlarged view of a portion a in fig. 10 according to the present invention.

Fig. 12 is a logic combination diagram of the system of the present invention.

Fig. 13 is a schematic structural view of the lightweight hollow aluminum impeller of the present invention.

Detailed Description

In order to make the technical field personnel understand the utility model discloses the scheme, will combine the drawing in the embodiment of the utility model below, to the technical scheme in the embodiment of the utility model carries out clear, complete description.

As shown in fig. 1 to 13, a lightweight, efficient, energy-saving and explosion-proof roof fan system for a steam turbine room of a nuclear power plant comprises a lightweight explosion-proof roof fan, a fan frequency conversion control cabinet for controlling the lightweight explosion-proof roof fan, and an indoor temperature sensor 910 connected to the fan frequency conversion control cabinet; the lightweight explosion-proof roof fan comprises an aluminum alloy electric air valve 91, a roof fan rainproof hood 95 arranged above the aluminum alloy electric air valve, a permanent magnet synchronous motor 94 arranged on the roof fan rainproof hood, a motor support assembly 93 used for connecting the permanent magnet synchronous motor and the roof fan rainproof hood, and a lightweight hollow aluminum impeller 92 arranged on the permanent magnet synchronous motor; the fan frequency conversion control cabinet comprises a voltage and current display instrument 96, a button indicator lamp 97 arranged on one side of the voltage and current display instrument, a frequency converter display terminal 98 used for displaying the use state of the fan and a special frequency converter 99 for controlling the permanent magnet motor of the permanent magnet synchronous motor.

The device also comprises a first driving piece 1 arranged on the rain-proof hood of the roof fan, a second driving piece 11 arranged on the first driving piece, a rotating roller 12 arranged on the second driving piece, a plurality of through grooves 13 arranged on the rain-proof hood of the roof fan, a plurality of convex plates 14 arranged on the rain-proof hood of the roof fan, a plurality of deicing devices 2 arranged on the rotating roller, a plurality of snow removing devices 3 arranged on the rotating roller and a plurality of stop blocks 4 arranged on the rotating roller; the deicing device 2 comprises a deicing block 21 arranged on the rotating roller, a connecting hole 22 arranged on the deicing block, a connecting rod 23 arranged on the connecting hole, a rotating rod 24 arranged at one end of the connecting rod, and a plurality of first gear teeth 25 arranged on the rotating rod; the rotating roller can rotate relative to the rain-proof hood of the roof fan, the deicing devices are identical in structure and symmetrically arranged, the snow removing devices are identical in structure and symmetrically arranged, the connecting rod can move relative to the connecting hole, the rotating rod can rotate relative to the connecting rod, the first gear teeth and the convex plate are meshed with each other, and the stop block can rotate relative to the rotating roller; the first driving piece is an air cylinder, and the second driving piece is a motor.

The deicing device 2 further comprises a worm 26 which is arranged on the rotating roller in a penetrating manner and one end of the worm is connected with the connecting rod, and a plurality of deicing assemblies arranged on the rotating rod; the deicing assembly comprises a first transmission belt 27 arranged on the rotating rod, a threaded sleeve 28 arranged on the first transmission belt, a push plate 29 arranged on the first transmission belt, a drive plate 20 arranged on one side of the push plate, a press plate 201 arranged on the rotating rod, a moving plate 202 arranged on the rotating rod, a first elastic part 203 used for connecting the moving plate and the rotating rod, and a plurality of scraping blades 204 arranged on the moving plate; the worm can for the dwang rotates, a plurality of deicing component structures are the same and are the symmetry and set up, first drive belt can for the dwang rotates, the thread bush with worm intermeshing, the movable plate can for the dwang moves, the doctor-bar is the slope and sets up, first elastic component is the spring.

The deicing device 2 further comprises a pressing block 205 arranged on the rotating roller and a dismounting assembly arranged on the connecting rod; the disassembling component comprises two chamfered parts 206 arranged at two ends of the connecting hole, a second elastic part 207 used for connecting the connecting rod and the ice removing block, two limiting balls 208 arranged on the connecting rod, two first telescopic rods 209 respectively used for connecting the two limiting balls and the connecting rod, two third elastic parts 210 respectively sleeved on the two first telescopic rods, two rotating arc plates 211 arranged on the rotating roller, a first connecting wire 212 penetrating through the rotating roller and connecting the two rotating arc plates, two moving tracks 213 arranged on the rotating roller, a moving block 214 arranged on the moving track, two fourth elastic parts 215 respectively used for connecting the moving block and the two moving tracks, a pull rod 216 arranged on the moving block, a moving groove 217 arranged on the rotating roller, a pull block 218 arranged on the moving groove, a first elastic part 207 arranged on the connecting rod and the ice removing block, two first connecting arc plates arranged on the rotating roller, a first connecting wire 212 arranged on the rotating roller and a second connecting arc plate arranged on the rotating roller, two moving tracks 213 arranged on the moving track, a moving block 214 arranged on the moving track, a second elastic part arranged on the moving track, A top plate 219 arranged on one side of the pulling block, a second connecting line 220 for connecting the pulling block and the moving block, and a guide roller 221 arranged on the rotating roller; the pressing block can push the top plate to move, the chamfer part can guide the limiting ball to move, the rotating arc plate can buckle the limiting ball, a torsional spring is arranged in the rotating arc plate, one end of the torsional spring is connected to the rotating arc plate, the other end of the torsional spring is connected to the rotating roller, the first connecting wire can move relative to the rotating roller, the moving block can move relative to the moving track, the pull rod can pull the first connecting wire, and the pull block can move relative to the moving groove; the second elastic piece is a spring, the third elastic piece is a spring, the first connecting line is a steel wire, the fourth elastic piece is a spring, and the second connecting line is a steel wire.

The snow removing device 3 comprises a snow removing block 31 arranged on the rotating roller, a rotating plate 32 arranged on the snow removing block, a second telescopic rod 33 arranged on the snow removing block, a fifth elastic piece 34 used for connecting the snow removing block and the second telescopic rod, a third telescopic rod 35 arranged on the snow removing block, a limiting hole 36 arranged on the rotating roller and a connecting strip 37 used for connecting the second telescopic rod and the third telescopic rod; the snow removing block can rotate relative to the rotating roller, the rotating plate can rotate relative to the snow removing block, the third telescopic link can be inserted into the limiting hole, the connecting strip and the second telescopic link are in hinged connection, the connecting strip and the third telescopic link are in hinged connection, and the fifth elastic piece is a spring.

The snow removing device 3 further comprises two driving rollers 38 arranged on the snow removing block, a plurality of second gear teeth 39 arranged on one of the two driving rollers, a gear 30 arranged on the snow removing block, a second transmission belt 301 sleeved on the two driving rollers, a bump 302 arranged on the other of the two driving rollers, a fourth telescopic rod 303 arranged on the snow removing block, a fifth telescopic rod 304 arranged on the snow removing block, a guide rod 305 arranged on the snow removing block, and a plurality of snow removing assemblies arranged on the second transmission belt; the drive roller can for the snow removal piece rotates, a plurality of second teeth of a cogwheel with gear intermeshing, the lug can drive the fourth telescopic link contracts, the fourth telescopic link with the fifth telescopic link passes through the trachea and communicates each other, a plurality of snow removing subassembly structures are the same and are the symmetry and set up.

The snow removing assembly comprises a snow removing plate 306 arranged on the second transmission belt, a fixed block 307 arranged on the second transmission belt, a connecting block 308 arranged on one side of the fixed block, a sixth elastic member 309 used for connecting the connecting block with the fixed block, a connecting rod 310 used for connecting the connecting block with the snow removing plate, a limiting plate 311 arranged on the connecting block, a clamping block 312 arranged on the connecting block, a clamping plate 313 arranged on the fixed block, and a seventh elastic member 314 used for connecting the clamping plate with the fixed block; the snow removing plate can rotate for the second drive belt, the connecting block can move for the second drive belt, the connecting rod with the snow removing plate is hinged joint, the connecting rod with the connecting block is hinged joint, the fifth telescopic link with the limiting plate is the cooperation setting, the cardboard with the fixture block can lock each other, the guide rod with the cardboard is the cooperation setting, the cardboard can for the fixed block rotates, the sixth elastic component is the spring, the seventh elastic component is the spring.

The specific working principle is as follows: when the rain-proof hood of the roof fan needs to be deiced, the first driving piece 1 is started to drive the second driving piece 11 and the rotating roller 12 to move upwards, and after the deicing device moves upwards along with the rotating roller 12 and penetrates out of the through groove 13, the second driving piece 11 is started to drive the rotating roller 12 to rotate, so that the deicing blocks 21 rotate along with the rotating roller 12, and an ice layer covered on the rain-proof hood of the roof fan is scraped through the deicing blocks 21; when the ice removing block 21 is driven by the rotating roller 12 to rotate, the first gear teeth 25 are in contact with the convex plate 14 and drive the rotating rod 24 to rotate through the matching between the convex plate 14 and the first gear teeth 25, then the scraping blade 204 rotates along with the rotating rod 24 and scrapes off an ice layer, meanwhile, when the rotating rod 24 rotates, the worm 26 rotates relative to the rotating rod 24, and simultaneously, through the matching between the worm 26 and the threaded sleeve 28, the first driving belt 27 rotates, when the first driving belt 27 rotates, the pushing plate 29 pushes the driving plate 20 and further drives the moving plate 202 to move, so that the scraping blade 204 on the moving plate 202 moves along with the moving, and further, the scraping blade 204 can also scrape off the ice layer like moving to one side while rotating; when the second belt 301 moves the snow removing plate 31, the accumulated snow can be swept away by the snow removing plate 31.

It is obvious that the described embodiments are only some of the embodiments of the present invention, and not all of them. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts shall belong to the protection scope of the present invention.

Claims

1. A light-weight high-efficiency energy-saving explosion-proof roof fan system for a steam turbine room of a nuclear power plant comprises a light-weight explosion-proof roof fan, a fan frequency conversion control cabinet for controlling the light-weight explosion-proof roof fan, and an indoor temperature sensor (910) connected to the fan frequency conversion control cabinet; the method is characterized in that: explosion-proof roof fan of lightweight includes aluminum alloy electric air valve (91), locates roof fan rain-proof hood (95) of aluminum alloy electric air valve top, locates permanent-magnet synchronous machine (94) on the roof fan rain-proof hood, be used for connecting permanent-magnet synchronous machine with motor bracket component (93) of roof fan rain-proof hood, locate lightweight cavity aluminium impeller (92) on the permanent-magnet synchronous machine.

2. The nuclear power plant steam turbine room is with energy-efficient explosion-proof roof fan system of lightweight of claim 1, characterized in that: the fan frequency conversion control cabinet comprises a voltage and current display instrument (96), a button indicator lamp (97) arranged on one side of the voltage and current display instrument, a frequency converter display terminal (98) used for displaying the use state of the fan and a special frequency converter (99) for controlling the permanent magnet motor of the permanent magnet synchronous motor.

3. The nuclear power plant steam turbine room is with energy-efficient explosion-proof roof fan system of lightweight of claim 1, characterized in that: the device also comprises a first driving piece (1) arranged on the rain-proof hood of the roof fan, a second driving piece (11) arranged on the first driving piece, a rotating roller (12) arranged on the second driving piece, a plurality of through grooves (13) arranged on the rain-proof hood of the roof fan, a plurality of convex plates (14) arranged on the rain-proof hood of the roof fan, a plurality of deicing devices (2) arranged on the rotating roller, a plurality of snow removing devices (3) arranged on the rotating roller and a plurality of stop blocks (4) arranged on the rotating roller; the deicing device (2) comprises a deicing block (21) arranged on the rotating roller, a connecting hole (22) arranged on the deicing block, a connecting rod (23) arranged on the connecting hole, a rotating rod (24) arranged at one end of the connecting rod, and a plurality of first gear teeth (25) arranged on the rotating rod; the rotating roller can rotate relative to the rain-proof hood of the roof fan, the deicing devices are identical in structure and symmetrically arranged, the snow removing devices are identical in structure and symmetrically arranged, the connecting rod can move relative to the connecting hole, the rotating rod can rotate relative to the connecting rod, the first gear teeth and the convex plate are arranged in a matched mode, and the stop block can rotate relative to the rotating roller.

4. The nuclear power plant steam turbine room is with energy-efficient explosion-proof roof fan system of lightweight of claim 3, characterized in that: the deicing device (2) further comprises a worm (26) which is arranged on the rotating roller in a penetrating mode and one end of the worm is connected with the connecting rod, and a plurality of deicing assemblies which are arranged on the rotating rod; the deicing assembly comprises a first transmission belt (27) arranged on the rotating rod, a threaded sleeve (28) arranged on the first transmission belt, a push plate (29) arranged on the first transmission belt, a drive plate (20) arranged on one side of the push plate, a press plate (201) arranged on the rotating rod, a moving plate (202) arranged on the rotating rod, a first elastic part (203) used for connecting the moving plate and the rotating rod, and a plurality of scraping blades (204) arranged on the moving plate; the worm can for the dwang rotates, a plurality of deicing component structures are the same and are the symmetry and set up, first drive belt can for the dwang rotates, the thread bush with the worm is the cooperation setting, the movable plate can for the dwang moves, the doctor-bar is the slope setting.

5. The nuclear power plant steam turbine room is with energy-efficient explosion-proof roof fan system of lightweight of claim 3, characterized in that: the deicing device (2) further comprises a pressing block (205) arranged on the rotating roller and a dismounting assembly arranged on the connecting rod; the disassembling component comprises two chamfered parts (206) arranged at two ends of the connecting hole, a second elastic part (207) used for connecting the connecting rod and the ice removing block, two limiting balls (208) arranged on the connecting rod, two first telescopic rods (209) respectively used for connecting the two limiting balls and the connecting rod, two third elastic parts (210) respectively sleeved on the two first telescopic rods, two rotating arc plates (211) arranged on the rotating roller, a first connecting wire (212) penetrating the rotating roller and connected with the two rotating arc plates, two moving tracks (213) arranged on the rotating roller, a moving block (214) arranged on the moving track, two fourth elastic parts (215) respectively used for connecting the moving block and the two moving tracks, a pull rod (216) arranged on the moving block, A moving groove (217) arranged on the rotating roller, a pulling block (218) arranged on the moving groove, a top plate (219) arranged on one side of the pulling block, a second connecting line (220) used for connecting the pulling block and the moving block, and a guide roller (221) arranged on the rotating roller; according to the movable block with the roof is the cooperation setting, chamfer portion with spacing ball is the cooperation setting, rotate the arc board with spacing ball is the cooperation setting, be equipped with the torsional spring in the rotation arc board, torsional spring one end connect in rotate on the arc board, the torsional spring other end connect in on the live-rollers, first connecting wire can for the live-rollers removes, the movable block can for the removal track removes, the pull rod with first connecting wire is the cooperation setting, draw the piece can for the shifting chute removes.

6. The nuclear power plant steam turbine room is with energy-efficient explosion-proof roof fan system of lightweight of claim 3, characterized in that: the snow removing device (3) comprises a snow removing block (31) arranged on the rotating roller, a rotating plate (32) arranged on the snow removing block, a second telescopic rod (33) arranged on the snow removing block, a fifth elastic piece (34) used for connecting the snow removing block and the second telescopic rod, a third telescopic rod (35) arranged on the snow removing block, a limiting hole (36) arranged on the rotating roller and a connecting strip (37) used for connecting the second telescopic rod and the third telescopic rod; the snow removing block can rotate relative to the rotating roller, the rotating plate can rotate relative to the snow removing block, the third telescopic rod and the limiting hole are arranged in a matched mode, the connecting strip and the second telescopic rod are connected through a hinge, and the connecting strip and the third telescopic rod are connected through a hinge.

7. The nuclear power plant steam turbine room is with energy-efficient explosion-proof roof fan system of lightweight of claim 6, characterized in that: the snow removing device (3) further comprises two driving rollers (38) arranged on the snow removing block, a plurality of second gear teeth (39) arranged on one of the two driving rollers, a gear (30) arranged on the snow removing block, a second transmission belt (301) sleeved on the two driving rollers, a convex block (302) arranged on the other of the two driving rollers, a fourth telescopic rod (303) arranged on the snow removing block, a fifth telescopic rod (304) arranged on the snow removing block, a guide rod (305) arranged on the snow removing block and a plurality of snow removing components arranged on the second transmission belt; the drive roller can for the snow removal piece rotates, a plurality of second teeth of a cogwheel with the gear is the cooperation setting, the lug with the fourth telescopic link is the cooperation setting, the fourth telescopic link with the fifth telescopic link is the cooperation setting, a plurality of snow removing subassembly structures are the same and are the symmetry setting.

8. The nuclear power plant steam turbine room is with energy-efficient explosion-proof roof fan system of lightweight of claim 7, characterized in that: the snow removing assembly comprises a snow removing plate (306) arranged on the second transmission belt, a fixed block (307) arranged on the second transmission belt, a connecting block (308) arranged on one side of the fixed block, a sixth elastic element (309) used for connecting the connecting block and the fixed block, a connecting rod (310) used for connecting the connecting block and the snow removing plate, a limiting plate (311) arranged on the connecting block, a clamping block (312) arranged on the connecting block, a clamping plate (313) arranged on the fixed block and a seventh elastic element (314) used for connecting the clamping plate and the fixed block; the snow removing plate can for the second drive belt rotates, the connecting block can for the second drive belt removes, the connecting rod with the snow removing plate is hinged joint, the connecting rod with the connecting block is hinged joint, the fifth telescopic link with the limiting plate is the cooperation setting, the cardboard with the fixture block is the cooperation setting, the guide bar with the cardboard is the cooperation setting, the cardboard can for the fixed block rotates.