CN209462237U - A kind of high temperature resistant permanent magnet synchronous screen motor suitable for control rod drive mechanism - Google Patents
A kind of high temperature resistant permanent magnet synchronous screen motor suitable for control rod drive mechanism Download PDFInfo
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- CN209462237U CN209462237U CN201821453481.1U CN201821453481U CN209462237U CN 209462237 U CN209462237 U CN 209462237U CN 201821453481 U CN201821453481 U CN 201821453481U CN 209462237 U CN209462237 U CN 209462237U
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- stator
- rotor
- permanent magnet
- control rod
- drive mechanism
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Abstract
The utility model provides a kind of high temperature resistant permanent magnet synchronous screen motor suitable for control rod drive mechanism comprising armature spindle；The external of the armature spindle wraps up rotor core；The external of the rotor core wraps up rotor permanent magnet poles；Successively wrap up rotor shielding sleeve and stator can in the outside of the rotor permanent magnet poles；Air gap is equipped between the rotor shielding sleeve and the stator can；The external of the stator can wraps up stator core；Motor housing is wrapped up outside the stator core.High temperature resistant permanent magnet synchronous screen motor provided by the utility model suitable for control rod drive mechanism, driving torque needed for control rod drive mechanism can either be provided, and effectively can be kept apart the stator of motor and rotor with reactor-loop coolant by housing.
Description
Technical field
The utility model relates to a kind of high temperature resistant permanent magnet synchronous screen motors suitable for control rod drive mechanism.
Background technique
Control rod drive mechanism is the important control system of nuclear reactor and safety system, and major function includes reaction
Starting, power regulation, shutdown and emergency shut-down of heap etc..Country's PWR nuclear power plant control rod drive mechanism all uses magnetic at present
The driving of power hoisting type, only naval reactor and high temperature gas cooled reactor use motor-driven control rod drive mechanism.
ABV, VBER and KLT series naval reactor of Russian test machines designing for manufacturing office (OKBM) are its many years
Research achievement.Wherein KLT-40 series is its most mature marinereactor, which has been nuclear-powered icebreaker in Russia
The northern most evil bad environmental work of Ross provides power, and total run time was more than 7000 heap years.Akademik Lomonosov is
The global First floating nuclear power plant of Russian nuclear power group (Rosenergoatom) design, is equipped with 2 35MWe (KLT-
40S) reactor, control rod drive mechanism execute regulatory function [KLT- using stepper motor driving rack and pinion drive mechanism
40floating nuclear heat and power unit with KLT-40s reactor plant(OKBM,
Russian Federation).In:Status of advanced light water reactor designs IAEA-
TECDOC-1391.Vienna:International Atomic Energy Agency,IAEA,2004:733-754.].It is high
Wet cold dome control rod drive mechanism also uses the position control [Wu of stepper motor dragging sprocket wheel chain progress control rod
Yuanqiang,Diao Xingzhong.et al.Design and tests for the HTR-10control rod
system,Nuclear Engineering and Design,218(2002),147–154].Existing lead screw idler wheel spiral shell peculiar to vessel
Parent form driving mechanism then uses reluctance motor to drive, and rotor directly keeps connecting with idler wheel nut, is placed in pressure boundary,
And stator is then placed in and is placed outside outside pressure-bearing shell, is cooled down by cooling device, the gap between electric machine rotor is excessive, causes
Motor delivery efficiency is low.When motor stator is built in pressure boundary, reduce air gap can greatly promote delivery efficiency with
Meet the requirement of driving torque.But due to being full of reactor-loop coolant in pressure boundary, internal stator structure needs are examined
Consider the high temperature resistant and radiation resistance of stator core winding and rotor, and the isolating problem with reactor coolant.
Utility model content
The utility model in view of the deficiencies of the prior art, proposes a kind of high temperature resistant permanent magnetism suitable for control rod drive mechanism
Synchronous shield electric machine.
High temperature resistant permanent magnet synchronous screen motor provided by the utility model suitable for control rod drive mechanism, feature exist
In, including armature spindle；The external of the armature spindle wraps up rotor core；The external of the rotor core wraps up rotor permanent magnet magnetic
Pole；Successively wrap up rotor shielding sleeve and stator can in the outside of the rotor permanent magnet poles；The rotor shielding sleeve and institute
It states and is equipped with air gap between stator can；The external of the stator can wraps up stator core；Packet outside the stator core
Wrap up in motor housing.
Preferably, the armature spindle is hollow structure, and the inner surface of the armature spindle is equipped with screw thread；The screw thread and driving
Mechanism screw rod matches.
Preferably, the rotor permanent magnet poles are the mounted magnet structure in surface, are adopted as high-performance rare-earth permanent-magnetic material
Material.
Preferably, the stator core is formed for silicon steel plate packing.
Preferably, the stator core is equipped with stator winding along axial both ends, and the stator winding is concentratred winding knot
Structure, magnetic pole of the stator are no pole shoe structure, and stator rabbet is without slot wedge.
It preferably, further include stator top end cap and stator lower end cap；Stator top end cap and stator lower end
Cover rim is axially separately positioned on the both ends of the stator core, and welds with the stator can.
It preferably, further include rotor top clamping cap and rotor lower part clamping cap；Rotor top clamping cap and rotor
Lower part clamping cap is separately positioned on the both ends of the rotor core along axial direction, and welds with the rotor shielding sleeve.
It preferably, further include motor top rolling bearing and electronics lower thrust bearing；Motor top rolling bearing
Motor fixed part is separately fixed at along axial direction with electronics lower thrust bearing.
Compared with prior art, the utility model has the following beneficial effects:
1, the high temperature resistant permanent magnet synchronous screen motor provided by the utility model suitable for control rod drive mechanism, can either
Driving torque needed for control rod drive mechanism is provided, but can pass through housing effectively by the stator of motor and rotor with react
Heap primary Ioops coolant is kept apart.
2, the high temperature resistant permanent magnet synchronous screen motor provided by the utility model suitable for control rod drive mechanism, motor
Permanent magnet material and insulation all use high temperature resistant and Nai Gao exposed material, are able to bear temperature when being built in primary Ioops coolant
Degree and dosage (300 DEG C, 107Gy)。
3, the high temperature resistant permanent magnet synchronous screen motor provided by the utility model suitable for control rod drive mechanism, stator are adopted
It with concentratred winding without pole shoe structure, ensure that when motor power loss, rotor can be locked in fixation by the detent force of permanent magnet
The rotor of position, motor will not be rotated since the effect of gravity is dragged by control rod drive mechanism, lead to control rod underthrust.
Detailed description of the invention
Fig. 1 is the high temperature resistant permanent-magnet synchronous screen suitable for control rod drive mechanism for meeting the preferred embodiment in the utility model
Cover the radial cutaway view of motor.
Fig. 2 is the high temperature resistant permanent-magnet synchronous screen suitable for control rod drive mechanism for meeting the preferred embodiment in the utility model
Cover the axial section of motor.
Wherein: 1- stator can, 2- stator winding, 3- stator core, 4- rotor permanent magnet poles, 5- rotor core,
6- armature spindle, 7- armature spindle internal screw thread, 8- rotor shielding sleeve, 9- air gap, 10- stator lower end cap, 11- stator top end cap,
12- rotor top clamping cap, 13- rotor lower part clamping cap, the top 14- rolling bearing, 15- lower thrust bearing, outside 16- motor
Shell
Specific embodiment
To keep the above objects, features, and advantages of the utility model more obvious and easy to understand, with reference to the accompanying drawing and have
Body embodiment is described in further detail the utility model.
As shown in Figure 1, the high temperature resistant permanent magnetism suitable for control rod drive mechanism that an embodiment of the present invention provides is same
Shield electric machine is walked, is built in one loop of nuclear power station reactor coolant, it is cold to be each filled with reactor outside motor housing and in air gap
But agent.Stator core 3 forms for silicon steel plate packing, and stator winding 2 uses concentratred winding structure, and magnetic pole of the stator is using no pole shoe knot
Structure, stator rabbet pass through stator can 1 and motor housing 15 and reactor coolant without slot wedge, stator core and stator winding
Isolation.Stator can both ends and motor stator end supports end cap 10,11 are welded.Armature spindle 6 is hollow structure, and inside is furnished with
Screw thread 7, with driving mechanism screw rod cooperate, rotor rotate when, armature spindle inside thread drive screw rod, drive control rod rise or
Decline.Rotor permanent magnet poles 4 use the mounted magnet structure in surface, and permanent magnet material is high-performance rare-earth permanent magnet material, with
Guarantee has good performance and temperature coefficient.Rotor magnetic pole outer surface is cooling by the primary Ioops in rotor shielding sleeve 8 and air gap
Agent isolation.Rotor shielding sleeve 8 welds at motor both ends and rotor top clamping cap 12 and lower part clamping cap 13, guarantees leakproofness.
Rotor structure is connect by motor top rolling bearing 14 and lower thrust bearing 15 with motor fixed part, realizes rotation.
When needing motor to rotate, stator winding 2 is powered, and magnetic pole of the stator and rotor permanent magnet poles 4 interact, driving
Motor rotation.When 2 power loss of stator winding, since motor stator is using no pole shoe structure, in different stators with respect to position
Place is set, the magnetic circuit variation of rotor permanent magnet magnetic circuit very greatly, can generate certain detent force.The location torque of rotor permanent magnet can allow
Rotor is maintained at fixed position, avoids rotor from rotating under driving mechanism screw rod gravity, control rod is caused to glide.
Compared with prior art, the present embodiment has the advantages that
1, the high temperature resistant permanent magnet synchronous screen motor provided in this embodiment suitable for control rod drive mechanism, using permanent magnetism
Synchronous shield electric machine structure, armature spindle are hollow belt helicitic texture, are engaged with the driving screw rod of control rod, and screw rod is filled with anti-rotation
It sets, rotor drive screw rises or falls, driving torque needed for can either providing control rod drive mechanism, and energy
Effectively the stator of motor and rotor are kept apart with reactor-loop coolant by housing.
2, the high temperature resistant permanent magnet synchronous screen motor provided in this embodiment suitable for control rod drive mechanism, motor is forever
Magnet material and insulation all use high temperature resistant and Nai Gao exposed material, are able to bear temperature when being built in primary Ioops coolant
With dosage (300 DEG C, 107Gy)。
3, the high temperature resistant permanent magnet synchronous screen motor provided in this embodiment suitable for control rod drive mechanism, ensure that and work as
When motor power loss, rotor can be locked in fixed position by the detent force of permanent magnet, and the rotor of motor will not be due to gravity
Effect is dragged by control rod drive mechanism to rotate, and leads to control rod underthrust.
Those skilled in the art can use different methods to achieve the described function each specific application, but
It is this realize it is not considered that beyond the scope of the utility model.
Obviously, it is practical new without departing from this can to carry out various modification and variations to utility model by those skilled in the art
The spirit and scope of type.If in this way, these modifications and variations of the present invention belong to the utility model claims and its
Within the scope of equivalent technologies, then the utility model is also intended to including these modification and variations.
Claims (8)
1. a kind of high temperature resistant permanent magnet synchronous screen motor suitable for control rod drive mechanism, which is characterized in that including armature spindle；
The external of the armature spindle wraps up rotor core；The external of the rotor core wraps up rotor permanent magnet poles；The rotor is forever
Successively wrap up rotor shielding sleeve and stator can in the outside of magnet poles；The rotor shielding sleeve and the stator can it
Between be equipped with air gap；The external of the stator can wraps up stator core；Motor housing is wrapped up outside the stator core.
2. being suitable for the high temperature resistant permanent magnet synchronous screen motor of control rod drive mechanism as described in claim 1, feature exists
In the armature spindle is hollow structure, and the inner surface of the armature spindle is equipped with screw thread；The screw thread and driving mechanism screw rod phase
Match.
3. being suitable for the high temperature resistant permanent magnet synchronous screen motor of control rod drive mechanism as described in claim 1, feature exists
In the rotor permanent magnet poles are the mounted magnet structure in surface, are adopted as high-performance rare-earth permanent magnet material.
4. being suitable for the high temperature resistant permanent magnet synchronous screen motor of control rod drive mechanism as described in claim 1, feature exists
In the stator core is formed for silicon steel plate packing.
5. the high temperature resistant permanent magnet synchronous screen motor described in claim 1 suitable for control rod drive mechanism, which is characterized in that
The stator core is concentratred winding structure along stator winding, the stator winding is axially arranged with, and magnetic pole of the stator is no pole shoe knot
Structure, stator rabbet is without slot wedge.
6. the high temperature resistant permanent magnet synchronous screen motor according to claim 1 suitable for control rod drive mechanism, feature
It is, further includes stator top end cap and stator lower end cap；Stator top end cap and stator lower end cap are along axial point
The both ends of the stator core are not set, and are welded with the stator can.
7. the high temperature resistant permanent magnet synchronous screen motor according to claim 1 suitable for control rod drive mechanism, feature
It is, further includes rotor top clamping cap and rotor lower part clamping cap；Rotor top clamping cap and rotor lower part clamping cap
It is separately positioned on the both ends of the rotor core along axial direction, and is welded with the rotor shielding sleeve.
8. the high temperature resistant permanent magnet synchronous screen motor according to claim 1 suitable for control rod drive mechanism, feature
It is, further includes motor top rolling bearing and electronics lower thrust bearing；Motor top rolling bearing and electronics lower part
Thrust bearing is separately fixed at motor fixed part along axial direction.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821453481.1U CN209462237U (en) | 2018-09-05 | 2018-09-05 | A kind of high temperature resistant permanent magnet synchronous screen motor suitable for control rod drive mechanism |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821453481.1U CN209462237U (en) | 2018-09-05 | 2018-09-05 | A kind of high temperature resistant permanent magnet synchronous screen motor suitable for control rod drive mechanism |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209462237U true CN209462237U (en) | 2019-10-01 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821453481.1U Active CN209462237U (en) | 2018-09-05 | 2018-09-05 | A kind of high temperature resistant permanent magnet synchronous screen motor suitable for control rod drive mechanism |
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| CN (1) | CN209462237U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108964394A (en) * | 2018-09-05 | 2018-12-07 | 上海核工程研究设计院有限公司 | A kind of high temperature resistant permanent magnet synchronous screen motor suitable for control rod drive mechanism |
| WO2024048184A1 (en) * | 2022-08-29 | 2024-03-07 | ミネベアミツミ株式会社 | Motor |
-
2018
- 2018-09-05 CN CN201821453481.1U patent/CN209462237U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108964394A (en) * | 2018-09-05 | 2018-12-07 | 上海核工程研究设计院有限公司 | A kind of high temperature resistant permanent magnet synchronous screen motor suitable for control rod drive mechanism |
| WO2024048184A1 (en) * | 2022-08-29 | 2024-03-07 | ミネベアミツミ株式会社 | Motor |
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| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CP01 | Change in the name or title of a patent holder |
Address after: No. 29 Hong Cao Road, Xuhui District, Shanghai Patentee after: Shanghai Nuclear Engineering Research and Design Institute Co.,Ltd. Address before: No. 29 Hong Cao Road, Xuhui District, Shanghai Patentee before: SHANGHAI NUCLEAR ENGINEERING RESEARCH & DESIGN INSTITUTE Co.,Ltd. |
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| CP01 | Change in the name or title of a patent holder |