CN114257058A - Nuclear feed is got material and is used exhaust fan non-contact transmission - Google Patents
Nuclear feed is got material and is used exhaust fan non-contact transmission Download PDFInfo
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- CN114257058A CN114257058A CN202010995096.5A CN202010995096A CN114257058A CN 114257058 A CN114257058 A CN 114257058A CN 202010995096 A CN202010995096 A CN 202010995096A CN 114257058 A CN114257058 A CN 114257058A
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- Prior art keywords
- main shaft
- exhaust fan
- driven
- iron boron
- neodymium iron
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- 239000000463 material Substances 0.000 title claims abstract description 32
- 230000009351 contact transmission Effects 0.000 title claims abstract description 15
- 230000005540 biological transmission Effects 0.000 claims abstract description 38
- 239000004020 conductor Substances 0.000 claims abstract description 31
- 230000017525 heat dissipation Effects 0.000 claims abstract description 12
- 241000755266 Kathetostoma giganteum Species 0.000 claims abstract description 4
- QJVKUMXDEUEQLH-UHFFFAOYSA-N [B].[Fe].[Nd] Chemical compound [B].[Fe].[Nd] QJVKUMXDEUEQLH-UHFFFAOYSA-N 0.000 claims description 57
- 229910001172 neodymium magnet Inorganic materials 0.000 claims description 57
- 238000000034 method Methods 0.000 claims description 9
- 230000008878 coupling Effects 0.000 claims description 7
- 238000010168 coupling process Methods 0.000 claims description 7
- 238000005859 coupling reaction Methods 0.000 claims description 7
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 4
- 229910052802 copper Inorganic materials 0.000 claims description 4
- 239000010949 copper Substances 0.000 claims description 4
- 230000009471 action Effects 0.000 claims description 3
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 3
- 229910052782 aluminium Inorganic materials 0.000 claims description 3
- 239000011241 protective layer Substances 0.000 claims description 3
- 229910001220 stainless steel Inorganic materials 0.000 claims description 3
- 239000010935 stainless steel Substances 0.000 claims description 3
- 238000010521 absorption reaction Methods 0.000 description 8
- 238000012423 maintenance Methods 0.000 description 6
- 230000008569 process Effects 0.000 description 6
- 238000001914 filtration Methods 0.000 description 5
- SANRKQGLYCLAFE-UHFFFAOYSA-H uranium hexafluoride Chemical compound F[U](F)(F)(F)(F)F SANRKQGLYCLAFE-UHFFFAOYSA-H 0.000 description 5
- 230000000694 effects Effects 0.000 description 4
- 238000000746 purification Methods 0.000 description 4
- 230000006378 damage Effects 0.000 description 3
- 239000003758 nuclear fuel Substances 0.000 description 3
- 239000000941 radioactive substance Substances 0.000 description 3
- 239000000126 substance Substances 0.000 description 3
- 230000007547 defect Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000009792 diffusion process Methods 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 230000002285 radioactive effect Effects 0.000 description 2
- 239000002994 raw material Substances 0.000 description 2
- 231100000331 toxic Toxicity 0.000 description 2
- 230000002588 toxic effect Effects 0.000 description 2
- 229910052770 Uranium Inorganic materials 0.000 description 1
- 230000002159 abnormal effect Effects 0.000 description 1
- 238000004887 air purification Methods 0.000 description 1
- 230000003139 buffering effect Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 230000000052 comparative effect Effects 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 230000001186 cumulative effect Effects 0.000 description 1
- 238000013016 damping Methods 0.000 description 1
- 230000005674 electromagnetic induction Effects 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 239000010410 layer Substances 0.000 description 1
- 239000000314 lubricant Substances 0.000 description 1
- 230000005389 magnetism Effects 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 231100000614 poison Toxicity 0.000 description 1
- 230000007096 poisonous effect Effects 0.000 description 1
- JFALSRSLKYAFGM-UHFFFAOYSA-N uranium(0) Chemical compound [U] JFALSRSLKYAFGM-UHFFFAOYSA-N 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
- 239000002023 wood Substances 0.000 description 1
Images
Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K49/00—Dynamo-electric clutches; Dynamo-electric brakes
- H02K49/10—Dynamo-electric clutches; Dynamo-electric brakes of the permanent-magnet type
- H02K49/104—Magnetic couplings consisting of only two coaxial rotary elements, i.e. the driving element and the driven element
- H02K49/106—Magnetic couplings consisting of only two coaxial rotary elements, i.e. the driving element and the driven element with a radial air gap
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D25/00—Pumping installations or systems
- F04D25/02—Units comprising pumps and their driving means
- F04D25/08—Units comprising pumps and their driving means the working fluid being air, e.g. for ventilation
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K1/00—Details of the magnetic circuit
- H02K1/06—Details of the magnetic circuit characterised by the shape, form or construction
- H02K1/22—Rotating parts of the magnetic circuit
- H02K1/32—Rotating parts of the magnetic circuit with channels or ducts for flow of cooling medium
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K5/00—Casings; Enclosures; Supports
- H02K5/04—Casings or enclosures characterised by the shape, form or construction thereof
- H02K5/18—Casings or enclosures characterised by the shape, form or construction thereof with ribs or fins for improving heat transfer
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Connection Of Motors, Electrical Generators, Mechanical Devices, And The Like (AREA)
Abstract
A non-contact transmission device of a local exhaust fan for nuclear feeding and material taking comprises a prime motor, wherein the prime motor and an impeller of the local exhaust fan are connected by a non-contact magnetic transmission device and then transmit torque; the non-contact type local exhaust fan magnetic transmission device comprises a prime motor main shaft and a local exhaust fan main shaft, wherein the coaxiality of the prime motor main shaft and the local exhaust fan main shaft is consistent, and a conductor driving rotor is arranged on the prime motor main shaft and is connected and fixed through a prime motor coupler; the driving rotor body is internally provided with a circular conductor part, and the circular conductor part is fixed in the driving rotor body by the flat-head embedded bolt; the middle part of the driving rotor body is provided with a plurality of driving rotor heat dissipation exhaust holes; the outer side of the driving rotor body is provided with a plurality of radiating fins which are connected with the outer side surface of the driving rotor body.
Description
Technical Field
The invention belongs to the field of transmission design of air purification process equipment in a uranium concentration feeding and taking link, and particularly relates to a non-contact transmission device of a local exhaust fan for feeding and taking materials.
Background
The nuclear fuel production field supplies to get the material factory building relates to raw materials supply, lean material is collected and the beneficiated burden material is got, collects and the beneficiated burden material gets during lean material is collected and the beneficiated burden material is got, in order to prevent the diffusion of radioactive poisonous and harmful substance, sets up corresponding purification absorption processing apparatus. The device comprises a plurality of air suction openings of a material supply and taking plant, a primary uranium hexafluoride absorption device, a secondary efficient filtering absorption device and a local exhaust fan. The fan is driven by a prime motor, and the purified air meeting the discharge standard is discharged to the outside through belt transmission. The belt transmission is easy to loosen and slip, the transmission efficiency is low, and the accurate transmission ratio cannot be maintained; the belt is easy to delaminate and crack at the bottom under high-speed rotation, the service life is short, and the belt needs to be replaced and maintained frequently; when the main shaft of the prime mover is not parallel to the main shaft of the local exhaust fan, the amplitude of the equipment exceeds the upper limit of the process requirement, so that the parts of the equipment are easy to damage and the like; the scrapped belt can not be recycled, and the environment is polluted. The exhaust fan is a key device for controlling the emission of radioactive substances in the field of nuclear fuel purification, has extremely high performance, and is easy to cause the pollution of maintenance personnel to a large amount of radioactive substances and the leakage of the radioactive substances due to frequent maintenance, thereby causing environmental pollution.
Disclosure of Invention
The invention aims to provide a non-contact transmission device of a nuclear feeding and taking exhaust fan, which is characterized in that the original parallel transmission of belt pulleys is changed into non-contact coaxial transmission, the structure is simple and reliable, the damping effect is obvious, the buffering light load starting effect is obvious, the service life is long, and the overhaul and the maintenance are not needed.
The technical scheme of the invention is as follows:
a non-contact transmission device of a local exhaust fan for nuclear feeding and material taking comprises a prime motor, wherein the prime motor and an impeller of the local exhaust fan are connected by a non-contact magnetic transmission device and then transmit torque;
the non-contact type local exhaust fan magnetic transmission device comprises a prime motor main shaft and a local exhaust fan main shaft, wherein the coaxiality of the prime motor main shaft and the local exhaust fan main shaft is consistent, and a conductor driving rotor is arranged on the prime motor main shaft and is connected and fixed through a prime motor coupler; the driving rotor body is internally provided with a circular conductor part, and the circular conductor part is fixed in the driving rotor body by the flat-head embedded bolt; the middle part of the driving rotor body is provided with a plurality of driving rotor heat dissipation exhaust holes; a plurality of radiating fins are arranged on the outer side of the driving rotor body and connected to the outer side surface of the driving rotor body;
the driven neodymium iron boron permanent magnet rotor is fixed on a main shaft of a local exhaust fan through a fan coupler, and the fan coupler is fixed by a key groove of the main shaft of the local exhaust fan and a key of the local exhaust fan; the driven neodymium iron boron rotor body is arranged on the driven spindle, a web plate heat dissipation exhaust hole is formed in the web plate of the driven spindle, and a circular fixing seat of the neodymium iron boron permanent magnet rotor body is arranged on the outer circular ring; the section of a shaft section for mounting the driven neodymium iron boron rotor body on the driven main shaft is square, the end part of the driven main shaft is provided with a limiting device, the limiting device is used for limiting the driven neodymium iron boron permanent magnet rotor to slide out of the driven main shaft, and the other end of the driven main shaft is provided with a mechanical connecting device used for limiting the driven neodymium iron boron permanent magnet rotor to slide out of the other end of the driven main shaft; mounting grooves for arranging neodymium iron boron permanent magnets are uniformly distributed on the outer wall of the circular fixing seat of the neodymium iron boron permanent magnet rotor body, a permanent magnet protection layer is coated on the outer side of the circular fixing seat of the neodymium iron boron permanent magnet rotor body, and the neodymium iron boron permanent magnets are mounted and fixed in the grooves;
the driven neodymium iron boron permanent magnet rotor is arranged in the conductor driving rotor and separated by an air gap;
the prime motor main shaft drives the conductor driving rotor to rotate at a high speed through the prime motor shaft coupling, the prime motor shaft coupling is fixed by a prime motor main shaft embedded key groove and a prime motor main shaft key, the circular ring-shaped conductor part cuts a magnetic field generated by the neodymium iron boron permanent magnet in the driven neodymium iron boron permanent magnet rotor, eddy current is generated in the circular ring-shaped conductor part after the magnetic field is cut, and an induced magnetic field generated by the eddy current interacts with a magnetic field generated by the neodymium iron boron permanent magnet to drive the driven neodymium iron boron permanent magnet rotor to rotate at a high speed.
The radial runout of the main shaft of the prime motor is less than 0.05mm, and the axial vibration value is less than 1 mm.
The radiating fins are made of materials with high thermal conductivity.
The radiating fins are made of stainless steel, copper or aluminum.
The radiating fins are welded on the outer side surface of the driving rotor body
The radiating fins and the driving rotor body are connected into a whole by adopting an integral forming method, and the connecting part is uniform, smooth and flat and is easy to radiate.
The end surface of the neodymium iron boron permanent magnet is arc trapezoid.
The direction of rotation of the driven neodymium iron boron permanent magnet rotor is consistent with that of the conductor driving rotor, so that the torque of the prime motor main shaft is transmitted to the exhaust fan main shaft.
One end of the adjusting part is connected with the driven neodymium iron boron permanent magnet rotor, and the driven neodymium iron boron permanent magnet rotor moves on the driven main shaft under the action of the actuating mechanism.
The invention has the following remarkable effects:
(1) the invention changes the parallel transmission of the belt pulley into the coaxial non-contact magnetic transmission, realizes the non-contact mechanical connection transmission torque of the prime motor and the fan, thoroughly solves the defect of frequent maintenance caused by the mutual transmission of the transmission vibration of the belt pulley, and effectively eliminates the harm of the volatilization of nuclear radioactivity toxic and harmful substances to maintenance workers due to abnormal shutdown in the maintenance.
(2) The magnetic transmission device designed by utilizing the electromagnetic induction principle of the invention thoroughly eliminates the defect of overlarge vibration of the local exhaust fan, and the amplitude also meets the process requirements even if the coaxiality of the prime motor and the local exhaust fan is inconsistent.
(3) When the magnetic transmission device is started, the buffer light-load starting effect is obvious, and the influence of overlarge peak current on a prime motor during conventional starting is effectively reduced.
(4) The magnetic transmission device has the advantages of simple structure, simple installation, convenient disassembly and long service life.
Drawings
FIG. 1 is a diagram of a nuclear feed, reclaiming and purification process system;
FIG. 2 is a schematic view of an original pulley drive;
FIG. 3 is a schematic view of a modified coaxial non-contact magnetic transmission;
FIG. 4 is a schematic view of a magnetic transmission device of a non-contact local exhaust fan;
in the figure: the device comprises a material supply and taking factory building 1, a fan suction inlet 2, a primary uranium hexafluoride absorption device 3, a secondary efficient filtering absorption device 4, a local exhaust fan 5, an exhaust pipeline 6, a prime motor 7, a local exhaust fan impeller 8, a prime motor belt pulley 9, a local exhaust fan belt pulley 10, a belt 11, a non-contact local exhaust fan magnetic transmission device 12, a prime motor spindle 13, a local exhaust fan spindle 14, a conductor driving rotor 15, a driven neodymium iron boron permanent magnet rotor 16, a prime motor coupler 17, a fan coupler 18, a driving rotor body 19, a circular conductor part 20, a radiating fin 21, a flat-head embedded bolt 22, an air gap 23, a permanent magnet protective layer 24, a neodymium iron boron permanent magnet rotor body circular fixing seat 25, a driving rotor radiating exhaust hole 26, a neodymium iron boron permanent magnet 27, a web radiating exhaust hole 28, a driven neodymium iron boron rotor body 29, a driven spindle 30, a mechanical connection device 31, a non-magnetic filter, a, Adjusting part 32, limiting device 34, prime mover spindle key 35, prime mover spindle embedded key slot 36, local exhaust spindle key slot 37 and local exhaust key 38.
Detailed Description
The invention is described in further detail below with reference to the figures and the embodiments.
Fig. 1 is a diagram of a nuclear feeding, material taking and purifying process system, fig. 2 is a schematic illustration of belt transmission before a transmission mode of an exhaust fan 5 in fig. 1 is improved, fig. 3 is a schematic illustration of non-contact magnetic transmission after the transmission mode of the exhaust fan 5 in fig. 1 is improved, fig. 2 and fig. 3 are comparative relations, and fig. 4 is a detailed illustration of a structure of a non-contact exhaust fan magnetic transmission device 12 in fig. 3.
As shown in fig. 1, the material supplying and taking factory 1 in the nuclear fuel production field relates to raw material supply, lean material collection and fine material taking, and a corresponding purification and absorption treatment device is arranged in order to prevent the diffusion of radioactive toxic and harmful substances in the material taking process. The device comprises a plurality of fan air suction openings 2 of a material supply and taking workshop, a primary uranium hexafluoride absorption device 3, a secondary efficient filtration absorption device 4 and a local exhaust fan 5,
wherein supply to set up a plurality of fan inlet scoop 2 in getting material factory building 1, fan inlet scoop 2 is connected one-level uranium hexafluoride absorbing device 3, and one-level uranium hexafluoride absorbing device 3 connects second grade high efficiency filtration absorbing device 4, and second grade high efficiency filtration absorbing device 4 connects local exhaust fan 5.
As shown in fig. 2, in the exhaust fan 5, the prime mover 7 drives the prime mover pulley 9 to rotate at a high speed, and the prime mover pulley 9 drives the belt 11 to drive the exhaust fan pulley 10 to rotate at a high speed, thereby transmitting torque to the exhaust fan impeller 8. The belt transmission is easy to loosen and slip, the transmission efficiency is low, and the accurate transmission ratio cannot be maintained; the belt is easy to delaminate and crack at the bottom under high-speed rotation, the service life is short, and the belt needs to be replaced and maintained frequently; when the main shaft of the prime mover is not parallel to the main shaft of the local exhaust fan, the amplitude of the equipment exceeds the upper limit of the process requirement, so that the parts of the equipment are easy to damage and the like; the scrapped belt can not be recycled, and the environment is polluted.
As shown in fig. 3, the original parallel belt pulley transmission is changed into a coaxial non-contact magnetic transmission, and the prime mover 7 and the exhaust fan impeller 8 are connected by the non-contact magnetic transmission device 12 to transmit torque, so as to drive the exhaust fan impeller 8 to exhaust the gas which is purified in the exhaust duct 6 and reaches the emission standard.
As shown in figure 4, the coaxiality of the main shaft 13 of the prime motor and the main shaft 14 of the exhaust fan is consistent, the radial run-out of the main shaft 13 of the prime motor is not larger than 0.05mm, the axial series motion value is not larger than 1mm, the radial run-out and the axial cumulative series motion value of the prime motor are measured by a dial indicator, and fine adjustment is carried out through the left and right positions of the prime motor and a copper sheet under a base of the prime motor. The conductor driving rotor 15 is mounted on the prime mover main shaft 13 and is connected and fixed by a prime mover coupling 17. A circular conductor part 20 is arranged in the driving rotor body 19, and after the outer surface of the circular ring is coated with a lubricant, wood cushion blocks are arranged to be uniformly, symmetrically and lightly knocked in, and the force is not too large. Flat-headed inline bolts 22 secure the annular conductor member 20 within the drive rotor body 19. The middle part of the driving rotor body 19 is provided with a plurality of driving rotor heat dissipation exhaust holes 26; the outer side of the driving rotor body 19 is provided with a plurality of radiating fins 21 which can be made of stainless steel, copper, aluminum and other materials with high thermal conductivity, the radiating fins 21 are arranged on the outer side surface of the driving rotor body 19 by welding or other effective connection modes, or the radiating fins 21 and the driving rotor body 11 are connected into a whole by adopting an integral forming method, the connection part is uniform, smooth and flat, and the heat dissipation is easy.
The driven neodymium iron boron permanent magnet rotor 16 is fixed on a local exhaust fan spindle 14 through a fan coupling 18, and the fan coupling 18 is fixed by a local exhaust fan spindle key groove 37 and a local exhaust fan key 38. Driven neodymium iron boron rotor body 29 installs on driven spindle 30, can slide along driven spindle 30 axial, and its web department sets up web heat dissipation exhaust hole 28, installs the circular fixing base 25 of neodymium iron boron permanent magnetism rotor body on the outer ring. The cross-sectional shape of the shaft section of the driven neodymium iron boron rotor body 29 mounted on the driven main shaft 30 is square, the end part is provided with a limiting device 34, the limiting device 34 is used for limiting the driven neodymium iron boron permanent magnet rotor 16 to slide out of the driven main shaft 30, and the other end of the driven main shaft 30 is provided with a mechanical connecting device 31 used for limiting the other end of the driven neodymium iron boron permanent magnet rotor 16 to slide out of the driven main shaft 30. The mounting groove that sets up neodymium iron boron permanent magnet 27 is equallyd divide on the circular fixing base 25 outer wall of neodymium iron boron permanent magnet rotor body, and neodymium iron boron permanent magnet 27 installation is fixed at the inslot with neodymium iron boron permanent magnet protective layer 24 outside the circular fixing base 25 of neodymium iron boron permanent magnet rotor body, and neodymium iron boron permanent magnet 27's terminal surface shape is circular arc trapezoidal.
The driven neodymium iron boron permanent magnet rotor 16 is installed in the conductor driving rotor 15 and separated by an air gap 23, and the air gap 23 is adjusted according to the actual working condition on site.
The prime motor main shaft 13 drives the conductor driving rotor 15 to rotate at a high speed through the prime motor coupler 17, the prime motor coupler 17 is fixed by a prime motor main shaft embedded key slot 36 and a prime motor main shaft key 35, the circular ring-shaped conductor part 20 cuts a magnetic field generated by the neodymium iron boron permanent magnet 27 in the driven neodymium iron boron permanent magnet rotor 16, eddy current is generated in the circular ring-shaped conductor part 20 after the magnetic field is cut, an induced magnetic field generated by the eddy current interacts with the magnetic field generated by the neodymium iron boron permanent magnet 27 to drive the driven neodymium iron boron permanent magnet rotor 16 to rotate at a high speed, the steering direction is consistent with the steering direction of the conductor driving rotor 15, and therefore the torque of the prime motor main shaft 13 is transmitted to the exhaust fan main shaft 14.
The driving rotor body 15 has a plurality of driving rotor heat dissipation vents 26 in the middle thereof and web heat dissipation vents 28 in the web of the driven ndfeb rotor body 29 to form a cooling heat dissipation channel for timely dissipating heat generated in the annular conductor member 20.
One end of the adjusting component 32 is connected to the driven ndfeb permanent magnet rotor 16, and under the action of the actuator, the driven ndfeb permanent magnet rotor 16 moves on the driven spindle 30 to change the axial air gap distance and the radial contact area between the driven ndfeb permanent magnet rotor 16 and the conductor driving rotor 15, thereby changing the magnitude of the transmission torque and finally changing the rotation speed of the local exhaust fan spindle 14. According to the nameplate rotating speed of the local exhaust fan 5, the output power of the prime motor 5 and a formula
The transmission torque is calculated, and the adjustment of the air gap 23 and the selection of the prime mover 5 can be performed according to the formula, wherein T is the transmission torque, p is the output power of the prime mover, and n is the rotation speed.
Claims (9)
1. The utility model provides a nuclear feed is got material and is used exhaust fan non-contact transmission which characterized in that: the device comprises a prime motor (7), wherein the prime motor (7) and a local exhaust fan impeller (8) are connected by a non-contact magnetic transmission device (12) and then transmit torque;
the non-contact type local exhaust fan magnetic transmission device (12) comprises a prime motor main shaft (13) and a local exhaust fan main shaft (14), wherein the coaxiality of the prime motor main shaft (13) and the local exhaust fan main shaft (14) is consistent, and a conductor driving rotor (15) is arranged on the prime motor main shaft (13) and is connected and fixed through a prime motor coupler (17); a circular conductor part (20) is arranged in the driving rotor body (19), and the circular conductor part (20) is fixed in the driving rotor body (19) by a flat-head embedded bolt (22); the middle part of the driving rotor body (19) is provided with a plurality of driving rotor heat dissipation exhaust holes (26); a plurality of radiating fins (21) are arranged on the outer side of the driving rotor body (19), and the radiating fins (21) are connected to the outer side surface of the driving rotor body (19);
the driven neodymium iron boron permanent magnet rotor (16) is fixed on a local exhaust fan spindle (14) through a fan coupler (18), and the fan coupler (18) is fixed through a local exhaust fan spindle key groove (37) and a local exhaust fan key (38); a driven neodymium iron boron rotor body (29) is arranged on a driven main shaft (30), a web plate heat dissipation exhaust hole (28) is formed in the web plate of the driven main shaft (30), and a circular fixed seat (25) of the neodymium iron boron permanent magnet rotor body is arranged on an outer ring; the section of a shaft section of a driven neodymium iron boron rotor body (29) mounted on the driven main shaft (30) is square, the end part of the driven main shaft is provided with a limiting device (34), the limiting device (34) is used for limiting the driven neodymium iron boron permanent magnet rotor (16) to slide out of the driven main shaft (30), and the other end of the driven main shaft (30) is provided with a mechanical connecting device (31) used for limiting the driven neodymium iron boron permanent magnet rotor (16) to slide out of the other end of the driven main shaft (30); mounting grooves provided with neodymium iron boron permanent magnets (27) are uniformly distributed on the outer wall of the circular fixed seat (25) of the neodymium iron boron permanent magnet rotor body, a permanent magnet protective layer (24) is coated on the outer side of the circular fixed seat (25) of the neodymium iron boron permanent magnet rotor body, and the neodymium iron boron permanent magnets (27) are mounted and fixed in the grooves;
the driven neodymium iron boron permanent magnet rotor (16) is arranged in the conductor driving rotor (15) and is separated by an air gap (23);
a prime motor main shaft (13) drives a conductor driving rotor (15) to rotate at a high speed through a prime motor shaft coupling (17), the prime motor shaft coupling (17) is fixed with a prime motor main shaft key (35) through a prime motor main shaft embedded key groove (36), a circular ring-shaped conductor part (20) cuts a magnetic field generated by a neodymium iron boron permanent magnet (27) in a driven neodymium iron boron permanent magnet rotor (16), eddy currents are generated in the circular ring-shaped conductor part (20) after the magnetic field is cut, and an induced magnetic field generated by the eddy currents interacts with a magnetic field generated by the neodymium iron boron permanent magnet (27) to drive the driven neodymium iron boron permanent magnet rotor (16) to rotate at a high speed.
2. The non-contact transmission device of the exhaust fan for the nuclear feeding and taking materials as claimed in claim 1, wherein: the radial runout of the main shaft 13 of the prime motor is less than 0.05mm, and the axial vibration value is less than 1 mm.
3. The non-contact transmission device of the exhaust fan for the nuclear feeding and taking materials as claimed in claim 1, wherein: the heat dissipation fins 21 are made of a material having high thermal conductivity.
4. The non-contact transmission device of the exhaust fan for the nuclear feeding and taking materials as claimed in claim 1, wherein: the heat radiating fins 21 are made of stainless steel or copper or aluminum.
5. The non-contact transmission device of the exhaust fan for the nuclear feeding and taking materials as claimed in claim 1, wherein: the fins 21 are welded to the outside face of the driving rotor body 19.
6. The non-contact transmission device of the exhaust fan for the nuclear feeding and taking materials as claimed in claim 1, wherein: the radiating fins 21 and the driving rotor body 11 are connected into a whole by adopting an integral forming method, and the connecting part is uniform, smooth and flat, so that the radiating is easy.
7. The non-contact transmission device of the exhaust fan for the nuclear feeding and taking materials as claimed in claim 1, wherein: the end surface of the neodymium iron boron permanent magnet 27 is arc trapezoid.
8. The non-contact transmission device of the exhaust fan for the nuclear feeding and taking materials as claimed in claim 1, wherein: the direction of rotation of driven neodymium iron boron permanent magnet rotor 16 is consistent with the direction of rotation of conductor driving rotor 15, so that the torque of prime mover main shaft 13 is transmitted to exhaust fan main shaft 14.
9. The non-contact transmission device of the exhaust fan for the nuclear feeding and taking materials as claimed in claim 1, wherein: one end of the adjusting component 32 is connected to the driven ndfeb permanent magnet rotor 16, and under the action of the actuator, the driven ndfeb permanent magnet rotor 16 moves on the driven spindle 30.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010995096.5A CN114257058A (en) | 2020-09-21 | 2020-09-21 | Nuclear feed is got material and is used exhaust fan non-contact transmission |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010995096.5A CN114257058A (en) | 2020-09-21 | 2020-09-21 | Nuclear feed is got material and is used exhaust fan non-contact transmission |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN114257058A true CN114257058A (en) | 2022-03-29 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010995096.5A Pending CN114257058A (en) | 2020-09-21 | 2020-09-21 | Nuclear feed is got material and is used exhaust fan non-contact transmission |
Country Status (1)
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| CN (1) | CN114257058A (en) |
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| US20170098990A1 (en) * | 2014-05-21 | 2017-04-06 | Jiangsu Magnet Valley Technologies Co., Ltd. | Self-alignment Protection Device for Permanent-magnet Coupling |
| CN109933099A (en) * | 2017-12-15 | 2019-06-25 | 中核兰州铀浓缩有限公司 | Uranium enrichment gas centrifuge speed probe output signal processing device |
| CN111446839A (en) * | 2020-05-18 | 2020-07-24 | 祝显胜 | Magnetic coupling transmission device |
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2020
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| CN2684450Y (en) * | 2004-03-09 | 2005-03-09 | 杨超君 | Permanent-magnet induction type magnetic transmission apparatus |
| CN101931308A (en) * | 2009-06-22 | 2010-12-29 | 余亚莉 | Permanent magnet coupling device for cylindrical transmission shaft |
| US20170098990A1 (en) * | 2014-05-21 | 2017-04-06 | Jiangsu Magnet Valley Technologies Co., Ltd. | Self-alignment Protection Device for Permanent-magnet Coupling |
| CN109933099A (en) * | 2017-12-15 | 2019-06-25 | 中核兰州铀浓缩有限公司 | Uranium enrichment gas centrifuge speed probe output signal processing device |
| CN111446839A (en) * | 2020-05-18 | 2020-07-24 | 祝显胜 | Magnetic coupling transmission device |
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