CN207409269U - 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
- CN207409269U CN207409269U CN201721437471.4U CN201721437471U CN207409269U CN 207409269 U CN207409269 U CN 207409269U CN 201721437471 U CN201721437471 U CN 201721437471U CN 207409269 U CN207409269 U CN 207409269U
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- China
- Prior art keywords
- spring
- planetary roller
- roller screw
- screw pair
- magnetic resistance
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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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- Monitoring And Testing Of Nuclear Reactors (AREA)
Abstract
The utility model discloses a kind of command bundle rods for nuclear reactors driving mechanisms, including support base, connector sleeve, hollow guide rod, upper support board and guide cylinder under guide sleeve, spring in rotary encoder, brake, magnetic resistance motor, two bearings, bearing block, spring upper fixed seat, spring outer guide sleeve, planetary roller screw pair, spring, spring, the planetary roller screw pair includes planetary roller screw pair screw and planetary roller screw pair nut.Technical solution provided by the utility model overcomes the fault of construction of the prior art, can more than ten times of raising service life of control rod drive mechanism, reliability it is high, and after emergent rod drop original precision and structure can be kept constant, it can be resumed work with former precision rapidly.In addition, screw provided by the utility model need not be pierced by the head cover of nuclear reactor, reduce the total height about 20% of reactor, reactor it is small, the space for occupying ship platform is small.
Description
Technical field
The utility model is related to nuclear reactor control technology field more particularly to a kind of closure armature nut lifting magnetic resistance horses
Up to formula command bundle rods for nuclear reactors driving mechanism.
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 ship platform, it is existing in short life, reliability it is low,
After rotor cracking emergency shut-down scram cannot normally former precision closure, restarting forced closed when can cause the screw field of conjugate action
It collides with damage.
At present, magnetic force hoisting type and cracking rotor magnetic resistance motor type control rod drive mechanism are screw liftings, and screw carries
When rising, screw need to be pierced by reactor lid, be pierced by height and account for the 20% of reactor total height, so that reactor higher is more
Greatly, more spaces of ship platform are occupied.
Utility model content
To solve the above problems, the utility model provides a kind of closure armature nut lifting magnetic resistance motor formula nuclear reactor control
Rod drive mechanism processed at least partly solves above-mentioned technical problem.
For this purpose, the utility model provides a kind of command bundle rods for nuclear reactors driving mechanism, including rotary encoder 1, brake
2nd, 3, two bearings 6, bearing block 7, spring upper fixed seat 8, spring outer guide sleeve 9, planetary roller screw pair, springs of magnetic resistance motor
11st, support base 13, connector sleeve 15, hollow guide rod 16, upper support board 17 and guide cylinder under guide sleeve 12, spring in spring
18, the planetary roller screw pair includes planetary roller screw pair screw 10 and planetary roller screw pair nut 14；
The rotary encoder 1 and the brake 2 are arranged on the magnetic resistance motor 3, and the rotary encoder 1 is set
In the top of the brake 2, the planetary roller screw pair screw 10 is connected with the magnetic resistance motor 3, two bearings 6
It is axially fixed on the planetary roller screw pair screw 10, two bearings 6 are fixed in the bearing block 7；
The spring 11 is sleeved on the outer ring of the planetary roller screw pair screw 10, and the upper end spiral of the spring 11 is consolidated
It is scheduled on the spring upper fixed seat 8, the spring 11 is arranged on the top of support base 13 under the spring, consolidates on the spring
Reservation 8 is fixedly connected on the bearing block 7, and the spring outer guide sleeve 9 is sleeved on the outer ring of the spring 11, the spring
Outer guide sleeve 9 is fixed on the spring upper fixed seat 8, and guide sleeve 12 is arranged on the interior of the spring 11 in the spring
Circle；
Guide sleeve 12 is fixedly connected with support base 13 under the spring in the spring, support base 13 and institute under the spring
It states planetary roller screw pair nut 14 to be fixedly connected, the planetary roller screw pair nut 14 is sleeved on the planetary roller screw
On paranema bar 10, the planetary roller screw pair nut 14 is fixed by the connector sleeve 15 with the hollow guide rod 16 to be connected
It connects, the hollow guide rod 16 is arranged in the guide cylinder 18, and the guide cylinder 18 is fixed at the upper support board
On 17, the hollow guide rod 16 is connected with load.
Optionally, flange seat 4 is further included, the magnetic resistance motor 3 is fixed with the bearing block 7 by the flange seat 4 to be connected
It connects.
Optionally, connector 5 is further included, the rotor of the planetary roller screw pair screw 10 and the magnetic resistance motor 3 leads to
The connector 5 is crossed to connect.
Optionally, the connector 5 is friction-disc electromagnetic clutch, slipping toothed electromagnetic clutch or rigid shaft coupling
Device.
Optionally, the planetary roller screw pair includes universal planetary roller screw pair, counter-rotative type planetary roller screw
Secondary, PWG ring flute profile planetary roller screw pairs or fixed-axle planetary roller screw pair.
Optionally, the brake 2 is for when energized braking the magnetic resistance motor 3, stopping pair when power is off
The magnetic resistance motor 3 is braked.
The utility model has following advantageous effects：
Command bundle rods for nuclear reactors driving mechanism provided by the utility model include rotary encoder, brake, magnetic resistance motor,
Two bearings, bearing block, spring upper fixed seat, spring outer guide sleeve, planetary roller screw pair, spring, guide sleeve, bullet in spring
Support base, connector sleeve, hollow guide rod, upper support board and guide cylinder under spring, the planetary roller screw pair are rolled including planet
Column lead screw pair screw and planetary roller screw pair nut.Technical solution provided by the utility model overcomes the structure of the prior art
Defect, can more than ten times of raising service life of control rod drive mechanism, reliability it is high, and can keep original essence after emergent rod drop
Degree and structure are constant, can be resumed work with former precision rapidly.Screw provided by the utility model need not be pierced by nuclear reaction
The head cover of heap, reduces the total height about 20% of reactor, reactor it is small, the space for occupying ship platform is small.This practicality
The technical solution of new offer is rotated using planetary roller screw pair screw in fixed position, and planetary roller screw pair nut is in
Empty guide rod lifts jointly, make use of hollow guide rod axial space and upper support board between nuclear reactor head cover
Space, it is achieved thereby that reducing nuclear reactor height and reducing the purpose of nuclear reactor volume.
Description of the drawings
Fig. 1 is the structure diagram for the command bundle rods for nuclear reactors driving mechanism that the utility model embodiment one provides；
Wherein, reference numeral is：1- rotary encoders；2- brakes；3- magnetic resistance motors；4- flange seats；5- connectors；6-
Bearing；7- bearing blocks；8- spring upper fixed seats；9- spring outer guide sleeves；10- planetary roller screw pair screws；11- springs；12-
Guide sleeve in spring；Support base under 13- springs；14- planetary roller screw pair nuts；15- connector sleeves；The hollow guide rods of 16-；
17- upper support boards；18- guide cylinders；Z- load.
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.
Embodiment one
Fig. 1 is the structure diagram for the command bundle rods for nuclear reactors driving mechanism that the utility model embodiment one provides.Such as Fig. 1
It is shown, command bundle rods for nuclear reactors driving mechanism, including rotary encoder 1, brake 2, magnetic resistance motor 3, two bearings 6, bearings
Seat 7, spring upper fixed seat 8, planetary roller screw pair, spring 11, prop up in spring spring outer guide sleeve 9 under guide sleeve 12, spring
Seat 13, connector sleeve 15, hollow guide rod 16, upper support board 17 and guide cylinder 18 are supportted, the planetary roller screw pair includes row
Star roller screw pair screw 10 and planetary roller screw pair nut 14.Technical solution provided in this embodiment overcomes the prior art
Fault of construction, can more than ten times of raising service life of control rod drive mechanism, reliability it is high, and can be kept after emergent rod drop
Original precision and structure are constant, can be resumed work with former precision rapidly.Screw provided in this embodiment need not be pierced by core
The head cover of reactor, reduces the total height about 20% of reactor, reactor it is small, the space for occupying ship platform is small.
Command bundle rods for nuclear reactors driving mechanism provided in this embodiment further includes flange seat 4 and connector 5, the magnetic resistance horse
It is fixedly connected up to 3 with the bearing block 7 by the flange seat 4, the planetary roller screw pair screw 10 and the magnetic resistance horse
Rotor up to 3 is connected by the connector 5.Referring to Fig. 1, the rotary encoder 1 and the brake 2 are arranged on the magnetic
It hinders on motor 3, the rotary encoder 1 is arranged on the top of the brake 2, the planetary roller screw pair screw 10 and institute
It states magnetic resistance motor 3 to connect, two bearings 6 are axially fixed on the planetary roller screw pair screw 10, two axis
6 are held to be fixed in the bearing block 7.The spring 11 is sleeved on the outer ring of the planetary roller screw pair screw 10, institute
The upper end spiral for stating spring 11 is fixed on the spring upper fixed seat 8, and the spring 11 is arranged on support base under the spring
13 top, the spring upper fixed seat 8 are fixedly connected on the bearing block 7, and the spring outer guide sleeve 9 is sleeved on described
The outer ring of spring 11, the spring outer guide sleeve 9 are fixed on the spring upper fixed seat 8, guide sleeve in the spring
12 are arranged on the inner ring of the spring 11.
In the present embodiment, the connector 5 is friction-disc electromagnetic clutch, slipping toothed electromagnetic clutch or rigidity join
Axis device, the planetary roller screw pair include universal planetary roller screw pair, counter-rotative type planetary roller screw pair, PWG ring teeth
Type planetary roller screw pair or fixed-axle planetary roller screw pair, the brake 2 are used for when energized to the magnetic resistance horse
It is braked up to 3, stops braking the magnetic resistance motor 3 when power is off.Technical solution provided in this embodiment is using row
Star roller screw pair screw is rotated in fixed position, and planetary roller screw pair nut with hollow guide rod is lifted, make use of jointly
The axial space and upper support board of hollow guide rod are to the space between nuclear reactor head cover, it is achieved thereby that it is anti-to reduce core
It answers stack height and reduces the purpose of nuclear reactor volume.
Command bundle rods for nuclear reactors driving mechanism provided in this embodiment has beneficial technique effect compared with the prior art,
It is as shown in table 1 below：
Table 1：The rotor control rod drive mechanism that cracks and the comparison in difference for being closed rotor control rod drive mechanism
As can be seen that technical solution provided in this embodiment overcomes the fault of construction of the prior art, it can more than ten times of raising
Service life of control rod drive mechanism, reliability are high, and after emergent rod drop original precision and structure can be kept constant, can be with
Resumed work with former precision rapidly.Screw provided in this embodiment need not be pierced by the head cover of nuclear reactor, reduce reactor
Total height about 20%, reactor it is small, the space for occupying ship platform is small.
Guide sleeve 12 is fixedly connected with support base 13 under the spring in the spring, support base 13 and institute under the spring
It states planetary roller screw pair nut 14 to be fixedly connected, the planetary roller screw pair nut 14 is sleeved on the planetary roller screw
On paranema bar 10, the planetary roller screw pair nut 14 is fixed by the connector sleeve 15 with the hollow guide rod 16 to be connected
It connects, the hollow guide rod 16 is arranged in the guide cylinder 18, and the guide cylinder 18 is fixed at the upper support board
On 17, the hollow guide rod 16 is connected with load.
Rotary encoder 1 and brake 2 provided in this embodiment are installed on magnetic resistance motor 3, and rotary encoder 1 is by load
Position feeds back to control system, and brake 2, which is powered, to be braked, and power-off is not braking.Two of bearing 6 are axially fixed in planetary roller silk
It on thick stick paranema bar 10, is installed in bearing block 7, rotor and the planetary roller screw pair screw 10 of magnetic resistance motor 3 pass through connector 5
Connection, magnetic resistance motor 3 are fixedly connected by flange seat 4 with bearing block 7.Technical solution provided in this embodiment overcomes existing skill
The fault of construction of art, can more than ten times of raising service life of control rod drive mechanism, reliability it is high, and can be protected after emergent rod drop
It holds original precision and structure is constant, can be resumed work with former precision rapidly.
Referring to Fig. 1, the upper end spiral of spring 11 is fixed on spring upper fixed seat 8, and spring outer guide sleeve 9 is sleeved on spring
11 outer rings, spring outer guide sleeve 9 are fixed on spring upper fixed seat 8 on bearing block 7.Guide sleeve 12 is mounted on spring 11 in spring
Inner ring, the lower end of spring 11 is supported under spring on support base 13, support base 13 and planetary roller screw pair nut under spring
14 are fixedly connected.Planetary roller screw pair nut 14 is fixedly connected with hollow guide rod 16 by connector sleeve 15, hollow guide rod
16 are mounted in guide cylinder 18, and guide cylinder 18 is fixed on upper support board 17.
Command bundle rods for nuclear reactors driving mechanism provided in this embodiment includes rotary encoder, brake, magnetic resistance motor, two
A bearing, bearing block, spring upper fixed seat, spring outer guide sleeve, planetary roller screw pair, spring, guide sleeve, spring in spring
Lower support base, connector sleeve, hollow guide rod, upper support board and guide cylinder, the planetary roller screw pair include planetary roller
Lead screw pair screw and planetary roller screw pair nut.The structure that technical solution provided in this embodiment overcomes the prior art lacks
Fall into, can more than ten times of raising service life of control rod drive mechanism, reliability it is high, and can keep original precision after emergent rod drop
It is constant with structure, it can be resumed work with former precision rapidly.Screw provided in this embodiment need not be pierced by nuclear reactor
Head cover, reduces the total height about 20% of reactor, reactor it is small, the space for occupying ship platform is small.The present embodiment carries
The technical solution of confession is rotated using planetary roller screw pair screw in fixed position, planetary roller screw pair nut and hollow guiding
Bar lifts jointly, make use of hollow guide rod axial space and upper support board to the space between nuclear reactor head cover,
It is achieved thereby that it reduces nuclear reactor height and reduces the purpose of nuclear reactor volume.
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 (6)
1. a kind of command bundle rods for nuclear reactors driving mechanism, which is characterized in that including rotary encoder (1), brake (2), magnetic resistance
Motor (3), two bearings (6), bearing block (7), spring upper fixed seat (8), spring outer guide sleeve (9), planetary roller screw pair,
Support base (13), connector sleeve (15), hollow guide rod (16), upper support under guide sleeve (12), spring in spring (11), spring
Plate (17) and guide cylinder (18), the planetary roller screw pair include planetary roller screw pair screw (10) and planetary roller screw
Secondary nut (14)；
The rotary encoder (1) and the brake (2) are arranged on the magnetic resistance motor (3), the rotary encoder (1)
The top of the brake (2) is arranged on, the planetary roller screw pair screw (10) is connected with the magnetic resistance motor (3), and two
A bearing (6) is axially fixed on the planetary roller screw pair screw (10), and two bearings (6) are fixed at
In the bearing block (7)；
The spring (11) is sleeved on the outer ring of the planetary roller screw pair screw (10), the upper end spiral of the spring (11)
It is fixed on the spring upper fixed seat (8), the spring (11) is arranged on the top of support base (13) under the spring, described
Spring upper fixed seat (8) is fixedly connected on the bearing block (7), and the spring outer guide sleeve (9) is sleeved on the spring
(11) outer ring, the spring outer guide sleeve (9) are fixed on the spring upper fixed seat (8), are oriented in the spring
Set (12) is arranged on the inner ring of the spring (11)；
Guide sleeve (12) is fixedly connected with support base (13) under the spring in the spring, under the spring support base (13) with
The planetary roller screw pair nut (14) is fixedly connected, and the planetary roller screw pair nut (14) is sleeved on the planet rolling
On column lead screw pair screw (10), the planetary roller screw pair nut (14) passes through the connector sleeve (15) and the hollow guiding
Bar (16) is fixedly connected, and the hollow guide rod (16) is arranged in the guide cylinder (18), and guide cylinder (18) fixation is set
It puts on the upper support board (17), the hollow guide rod (16) is connected with load.
2. command bundle rods for nuclear reactors driving mechanism according to claim 1, which is characterized in that further include flange seat (4), institute
Magnetic resistance motor (3) is stated to be fixedly connected by the flange seat (4) with the bearing block (7).
3. command bundle rods for nuclear reactors driving mechanism according to claim 1, which is characterized in that further include connector (5), institute
Planetary roller screw pair screw (10) is stated to be connected by the connector (5) with the rotor of the magnetic resistance motor (3).
4. command bundle rods for nuclear reactors driving mechanism according to claim 3, which is characterized in that the connector (5) is to rub
Wipe disk type electromagnetic clutch, slipping toothed electromagnetic clutch or positive coupling.
5. command bundle rods for nuclear reactors driving mechanism according to claim 1, which is characterized in that the planetary roller screw pair
Including universal planetary roller screw pair, counter-rotative type planetary roller screw pair, PWG ring flute profile planetary roller screw pairs or dead axle
Type planetary roller screw pair.
6. command bundle rods for nuclear reactors driving mechanism according to claim 1, which is characterized in that the brake (2) is used for
The magnetic resistance motor (3) is braked when energized, stops braking the magnetic resistance motor (3) when power is off.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721437471.4U CN207409269U (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 |
|---|---|---|---|
| CN201721437471.4U CN207409269U (en) | 2017-11-01 | 2017-11-01 | A kind of command bundle rods for nuclear reactors driving mechanism |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207409269U true CN207409269U (en) | 2018-05-25 |
Family
ID=62317540
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721437471.4U Withdrawn - After Issue CN207409269U (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) | CN207409269U (en) |
-
2017
- 2017-11-01 CN CN201721437471.4U patent/CN207409269U/en not_active Withdrawn - After Issue
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20180525 Effective date of abandoning: 20181207 |