CN207425365U - A kind of command bundle rods for nuclear reactors driving mechanism - Google Patents
A kind of command bundle rods for nuclear reactors driving mechanism Download PDFInfo
- Publication number
- CN207425365U CN207425365U CN201721435785.0U CN201721435785U CN207425365U CN 207425365 U CN207425365 U CN 207425365U CN 201721435785 U CN201721435785 U CN 201721435785U CN 207425365 U CN207425365 U CN 207425365U
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- China
- Prior art keywords
- planetary roller
- roller screw
- spring
- screw pair
- nut
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E30/00—Energy generation of nuclear origin
- Y02E30/30—Nuclear fission reactors
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Abstract
The utility model discloses a kind of command bundle rods for nuclear reactors driving mechanisms.The command bundle rods for nuclear reactors driving mechanism is rotated by reluctance motor rotor drives planetary roller screw pair nut and bearing to rotate in fixed supporting seat, the rotation of planetary roller screw pair nut drives screw and then guide rod is driven to make raising and lowering linear motion in guide cylinder, guide rod band dynamic loading reaches target location, and spring moves energy storage with screw；Brake is kept for the stage carry out braking and realizes that the position of load is kept in power；During emergency shut-down, the tension force effect that when spring-compressed lays in is conducted by planetary roller screw pair screw to planetary roller screw pair nut, and nut rotation driving screw declines scram.The utility model can be used for ship platform nuclear reactor, and the service life of command bundle rods for nuclear reactors driving mechanism is extended ten times or more, resumes work rapidly on the premise of original structure and precision is kept after emergency shut-down scram, improves the safety and work efficiency of nuclear reactor.
Description
Technical field
The utility model belongs to nuclear reactor control technology field, specifically, provides a kind of closure rotor screw liter
Magnetic resistance motor formula command bundle rods for nuclear reactors driving mechanism drops.
Background technology
Control rod drive mechanism is the key equipment in nuclear reactor, can be according to the finger of reactor control and protection system
The functions such as startup, power regulation, holding power, normal shutdown and the breakdown of reactor are completed in order.At present, press in the world
Generally using the control rod drive mechanism of the principles such as magnetic force hoisting type and cracking rotor magnetic resistance motor type in water type reactor.
Cracking rotor magnetic resistance motor type control rod drive mechanism is chiefly used in the equipments such as ship platform, it is existing short life, can
By property is low, after rotor cracking emergency shut-down scram cannot normally former precision closure, restarting forced closed when can cause screw
The damage of colliding with of the field of conjugate action, the problems such as kinematic accuracy is unpredictable, seriously affect the security reliability of ship platform core heap.
Utility model content
In view of the above-mentioned problems, to be to provide a kind of closure rotor screw lifting magnetic resistance motor formula new for the utility model aim
Command bundle rods for nuclear reactors driving mechanism improves the service life of command bundle rods for nuclear reactors driving mechanism, can kept after emergent rod drop
Resume work rapidly on the basis of original precision and structure.
A kind of command bundle rods for nuclear reactors driving mechanism, including：
It is position sensor 1, magnetic resistance motor 2, fixed supporting seat 4, star roller screw nut 5, bearing 6, fixed on spring
Seat 7, spring outer guide sleeve 8, planetary roller screw pair screw 9, spring 10, support base 12 under guide sleeve 11, spring in spring, even
Female connector 13, guide rod 14, upper support board 15 and guide cylinder 16, wherein：
Position sensor 1 is installed on magnetic resistance motor 2, and magnetic resistance motor 2 is installed on fixed supporting seat 4；
Planetary roller screw pair nut 5 is axially fixed at by bearing 6 in fixed supporting seat 4, planetary roller screw pair spiral shell
Mother 5 is connected with the rotor of magnetic resistance motor 2, and planetary roller screw pair nut 5 is assembled with the cooperation of planetary roller screw pair screw 9；
10 upper end of spring is fixed on spring upper fixed seat 7 and is sleeved on planetary roller screw pair screw 9,10, spring
Under by spring above support base 12,10 periphery of spring is set with spring outer guide sleeve 8, consolidates on spring outer guide sleeve 8 and spring
Reservation 7 is whole to be axially fixed at fixed supporting seat 4；Support base 12 is fixed under the tail end and spring of planetary roller screw pair screw 9
It connects, guide sleeve 11 is set in 10 inner circumferential of spring and is connected with support base under spring 12 in spring；
Planetary roller screw pair screw 9 is fixedly connected by connector sleeve 13 with the guide rod 14 in guide cylinder 16, guide cylinder
16 are fixed on upper support board 15.
Preferably, the planetary roller screw that the planetary roller screw pair nut 5 and planetary roller screw pair screw 9 are formed
Pair is universal planetary roller screw pair, counter-rotative type planetary roller screw pair, PWG ring flute profile planetary roller screw pairs or fixed-axle
Any one in planetary roller screw pair.
Preferably, rotary encoder and brake are additionally provided on the magnetic resistance motor 2.
Preferably, the command bundle rods for nuclear reactors driving mechanism further includes connector 3, the planetary roller screw pair nut
5 are connected by connector 3 with the rotor of magnetic resistance motor 2.
Preferably, connector 3 is appointing in friction-disc electromagnetic clutch, slipping toothed electromagnetic clutch or positive coupling
Meaning is a kind of.
Closure rotor screw lifting magnetic resistance motor formula command bundle rods for nuclear reactors driving mechanism provided by the utility model can use
In ship platform nuclear reactor, on the basis of safety and reliability is kept, by the longevity of command bundle rods for nuclear reactors driving mechanism
Life extends ten times or more, and quickly can recover work rapidly on the premise of original structure and precision is kept after emergency shut-down scram
Make, effectively improve the safety and work efficiency of nuclear reactor.
Description of the drawings
Fig. 1 is the structure diagram of command bundle rods for nuclear reactors driving mechanism provided by the utility model.
Reference sign：
1- position sensors, 2- magnetic resistance motors, 3- connectors, 4- fixed supporting seats, 5- planetary roller screw pairs nut, 6-
It is oriented in bearing, 7- springs upper fixed seat, 8- springs outer guide sleeve, 9- planetary roller screw pairs screw, 10- springs, 11- springs
Support base, 13- connector sleeves, 14- guide rods, 15- upper support boards, 16- guide cylinders, Z- load under set, 12- springs.
Specific embodiment
For those skilled in the art is made to more fully understand the technical solution of the utility model, below in conjunction with the accompanying drawings to this reality
It is described in detail with the command bundle rods for nuclear reactors driving mechanism of new offer.
As shown in Figure 1, command bundle rods for nuclear reactors driving mechanism includes position sensor 1, magnetic resistance motor 2, connector 3, solid
Determine support base 4, planetary roller screw pair nut 5 and planetary roller screw pair screw 9, bearing 6, spring upper fixed seat 7, outside spring
Guide sleeve 8, spring 10, support base 12, connector sleeve 13, guide rod 14,15 and of upper support board under guide sleeve 11, spring in spring
Guide cylinder 16.
Position sensor 1 is installed on magnetic resistance motor 2, position sensor 1 and the rotary encoder matched somebody with somebody on magnetic resistance motor 2
Closed loop is formed, location information is fed back into control system.
Planetary roller screw pair nut 5 is axially installed in by two bearings 6 in fixed supporting seat 4, magnetic resistance motor 2
Rotor is connected with planetary roller screw pair nut 5 by connector 3, and magnetic resistance motor 2 is mounted on fixed supporting seat 4, planet rolling
Column lead screw pair screw 9 is assembled with the cooperation of planetary roller screw pair nut 5.
10 upper end spiral of spring is fixed on spring upper fixed seat 7, is sleeved on planetary roller screw pair screw 9, spring
Outer guide sleeve 8 is sleeved on the outer circle of spring 10, and spring outer guide sleeve 8 and spring upper fixed seat are integrally axially fixed in fixed support
On seat 4.The tail end of planetary roller screw pair screw 9 is fixedly connected with support base under spring 12, and the lower end of spring 10 is by under spring
12 free support of support base, guide sleeve 11 is connected loaded on 10 inner ring of spring with support base under spring 12 in spring.
Planetary roller screw pair screw 9 is fixedly connected by connector sleeve 13 with the guide rod 14 in guiding mechanism, guide rod
14 are installed in 16 endoporus of guide cylinder, and guide cylinder 16 is fixed on upper support board 15.
In addition, above-mentioned command bundle rods for nuclear reactors driving mechanism can set connector, connector, magnetic resistance horse can also be cancelled
It is directly connected to up to 2 and nut 5.
Table 1：The rotor control rod drive mechanism that cracks and the comparison in difference for being closed rotor control rod drive mechanism
The course of work of above-mentioned command bundle rods for nuclear reactors driving mechanism is as follows：
The startup of reactor：
During reactor start-up, position sensor 1 and rotary encoder feedback position on magnetic resistance motor 2, magnetic resistance motor 2 lead to
Electricity, brake is not braking, the rotation of 2 rotor of magnetic resistance motor, and the planetary roller to link together is secured to by the drive of connector 3
Lead screw pair nut 5 and bearing 6 rotate in fixed supporting seat 4, and planetary roller screw pair nut 5 rotates, and drive planet
Roller screw pair screw 9 and then drive guide rod 14 are slided to make to rise in guide cylinder 16 and moved along a straight line, and guide rod 14 is with dynamic load
Lotus rises, the compressed energy-storage in effective travel with planetary roller screw pair screw 9 of spring 10.
Above-described connector 3 is positive coupling, if the connector matched somebody with somebody at this time is friction-disc electromagnetic clutch
Or during slipping toothed electromagnetic clutch, clutch is in energization engagement state, and the rotary motion of 2 rotor of magnetic resistance motor is transferred to
On planetary roller screw pair nut 5.
Power regulation：
Magnetic resistance motor 2 is powered, and the position sensor 1 and rotary encoder feedback position, brake on magnetic resistance motor 2 are not made
Dynamic, the rotation of 2 rotor of magnetic resistance motor drives the planetary roller screw pair nut 5 and the bearing that are connected thereto together by connector 3
6 rotate in fixed supporting seat 4, and planetary roller screw pair nut 5 rotates, drive planetary roller screw pair screw 9 into
And guide rod 14 is driven to slide in the guide cylinder 16 and makees up and down linear motion, so as to dynamic loading up and down to specified
The position of point, spring 10 compress in effective travel with planetary roller screw pair screw 9, uphold energy storage.
Above-described connector 3 is positive coupling, if the connector matched somebody with somebody at this time is friction-disc electromagnetic clutch
Or during slipping toothed electromagnetic clutch, clutch is in energization engagement state, and the rotary motion of 2 rotor of magnetic resistance motor is transferred to
On planetary roller screw pair nut 5.
Keep power：
Position sensor 1 and rotary encoder feedback position on magnetic resistance motor 2, magnetic resistance motor 2 are powered, and brake is not made
Dynamic, rotor rotation is driven by connector 3 and is connected thereto planetary roller screw pair nut 5 together and bearing 6 in fixed branch
It rotates in support seat 4, planetary roller screw pair nut 5 rotates, and drives planetary roller screw pair screw 9 and then with action-oriented
Up and down linear motion is made in the direction that bar 14 slides in guide cylinder 16, so as to arrive specified point with dynamic loading up and down
Position, when planetary roller screw pair screw 9 is with dynamic loading row to designated position, contained brake guaranties system in magnetic resistance motor 2
Dynamic, magnetic resistance motor 2 powers off break-off, and 2 rotor of magnetic resistance motor stops rotating with planetary roller screw pair nut 5, planetary roller
Lead screw pair screw 9 and guide rod 14 will be held in designated position with dynamic loading under the Braking of brake, and core heap is in
Power rating is kept, spring 10 is in designated position compressed energy-storage at this time.
Above-described connector 3 is positive coupling, if the connector matched somebody with somebody at this time is friction-disc electromagnetic clutch
Or during slipping toothed electromagnetic clutch, clutch is in energization engagement state, and the rotary motion of 2 rotor of magnetic resistance motor is transferred to
On planetary roller screw pair nut 5.When magnetic resistance motor 2 powers off break-off, clutch is so in energization engagement state.
Normal shutdown：
During normal shutdown, position sensor 1 and rotary encoder feedback position on magnetic resistance motor 2, magnetic resistance motor 2 lead to
Electricity, brake is not braking, rotor rotation, driven by connector 3 be connected thereto planetary roller screw pair nut 5 together and
Bearing 6 rotates in fixed supporting seat 4, and planetary roller screw pair nut 5 rotates, and drives planetary roller screw pair screw
9 and then guide rod 14 is driven to slide in the guide cylinder 16 make to decline linear motion, spring 10 exists with planetary roller screw pair screw 9
It is upheld in effective travel, guide rod 14 drives load reduction to normal shutdown position.
Above-described connector 3 is positive coupling, if the connector matched somebody with somebody at this time is friction-disc electromagnetic clutch
Or during slipping toothed electromagnetic clutch, clutch is in energization engagement state, and the rotary motion of 2 rotor of magnetic resistance motor is transferred to
On planetary roller screw pair nut 5.
Breakdown：
When there is accident palpus emergency shut-down, position sensor 1 and rotary encoder feedback position on magnetic resistance motor 2,
Magnetic resistance motor 2 powers off, and brake power-off is not braking, the tension force effect that spring 10 is laid in when compressing to planetary roller screw pair screw
9, tension is transferred on planetary roller screw pair nut 5 by planetary roller screw pair screw 9, so as to drive planetary roller screw pair
Nut 5 rotates, and planetary roller screw pair screw 9 is for linear motion under the rotation driving of planet roller screw nut 5, so as to
Achieve the purpose that quick scram.The rotor for the magnetic resistance motor 2 being fixedly connected at this time with planetary roller screw pair nut 5 can also be made soon
Speed rotation.
Above-described connector 3 is positive coupling, if the connector matched somebody with somebody at this time is friction-disc electromagnetic clutch
Or during slipping toothed electromagnetic clutch, clutch is in power-off separated position, by 2 rotor of magnetic resistance motor and planetary roller screw pair
Nut 5 separates, and the tension force effect laid in is to planetary roller screw pair screw 9 when spring 10 compresses, then by planetary roller screw pair
Tension is transferred on planetary roller screw pair nut 5 by screw 9, and planetary roller screw pair screw 9 is in planetary roller screw pair spiral shell
Make the linear motion of quick scram under the rotation driving of mother 5, the rotor of reluctance motor 2 does not rotate.
It is understood that embodiment of above is merely to illustrate that the principle of the utility model and uses exemplary
Embodiment, however the utility model is not limited thereto.For those skilled in the art, this is not being departed from
In the case of the spirit and essence of utility model, various changes and modifications can be made therein, these variations and modifications are also considered as this reality
With new protection domain.
Claims (4)
1. a kind of command bundle rods for nuclear reactors driving mechanism, including：
Position sensor (1), magnetic resistance motor (2), fixed supporting seat (4), star roller screw nut (5), bearing (6), spring
Upper fixed seat (7), spring outer guide sleeve (8), planetary roller screw pair screw (9), spring (10), guide sleeve (11) in spring,
Support base (12), connector sleeve (13), guide rod (14), upper support board (15) and guide cylinder (16) under spring, it is characterised in that：
Position sensor (1) is installed on magnetic resistance motor (2), and magnetic resistance motor (2) is installed on fixed supporting seat (4)；
Planetary roller screw pair nut (5) is axially fixed at by bearing (6) in fixed supporting seat (4), planetary roller screw pair
Nut (5) is connected with the rotor of magnetic resistance motor (2), and planetary roller screw pair nut (5) is matched somebody with somebody with planetary roller screw pair screw (9)
It attaches together and matches somebody with somebody；
Spring (10) upper end is fixed on spring upper fixed seat (7) and is sleeved on planetary roller screw pair screw (9), spring
(10) it is located under spring above support base (12), spring (10) periphery is set with spring outer guide sleeve (8), spring outer guide sleeve
(8) and spring upper fixed seat (7) is integrally axially fixed at fixed supporting seat (4)；The tail end of planetary roller screw pair screw (9) with
Support base (12) is fixedly connected under spring, in spring guide sleeve (11) be set in spring (10) inner circumferential and with support base under spring
(12) it is connected；
Planetary roller screw pair screw (9) is fixedly connected by connector sleeve (13) with the guide rod (14) in guide cylinder (16), is led
Upper support board (15) is fixed on to cylinder (16).
2. command bundle rods for nuclear reactors driving mechanism according to claim 1, it is characterised in that：The planetary roller screw pair
The planetary roller screw pair that nut (5) and planetary roller screw pair screw (9) are formed is universal planetary roller screw pair, reversion
Any one in type planetary roller screw pair, PWG ring flute profile planetary roller screw pairs or fixed-axle planetary roller screw pair.
3. command bundle rods for nuclear reactors driving mechanism according to claim 1 or 2, it is characterised in that：The magnetic resistance motor (2)
On be additionally provided with rotary encoder and brake；The command bundle rods for nuclear reactors driving mechanism further includes connector (3), the row
Star roller screw nut (5) is connected by connector (3) with the rotor of magnetic resistance motor (2).
4. command bundle rods for nuclear reactors driving mechanism according to claim 3, it is characterised in that：The connector (3) is to rub
Wipe any one in disk type electromagnetic clutch, slipping toothed electromagnetic clutch or positive coupling.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721435785.0U CN207425365U (en) | 2017-11-01 | 2017-11-01 | A kind of command bundle rods for nuclear reactors driving mechanism |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721435785.0U CN207425365U (en) | 2017-11-01 | 2017-11-01 | A kind of command bundle rods for nuclear reactors driving mechanism |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207425365U true CN207425365U (en) | 2018-05-29 |
Family
ID=62309532
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721435785.0U Withdrawn - After Issue CN207425365U (en) | 2017-11-01 | 2017-11-01 | A kind of command bundle rods for nuclear reactors driving mechanism |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207425365U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112071445A (en) * | 2020-09-21 | 2020-12-11 | 四川大学 | Convoluted electromagnetic control rod drive mechanism and method |
-
2017
- 2017-11-01 CN CN201721435785.0U patent/CN207425365U/en not_active Withdrawn - After Issue
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112071445A (en) * | 2020-09-21 | 2020-12-11 | 四川大学 | Convoluted electromagnetic control rod drive mechanism and method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20180529 Effective date of abandoning: 20181212 |
|
| AV01 | Patent right actively abandoned |