CN114396434A - Electromagnetic coupling of control rod driving mechanism of pebble bed type high-temperature gas cooled reactor - Google Patents
Electromagnetic coupling of control rod driving mechanism of pebble bed type high-temperature gas cooled reactor Download PDFInfo
- Publication number
- CN114396434A CN114396434A CN202111530402.9A CN202111530402A CN114396434A CN 114396434 A CN114396434 A CN 114396434A CN 202111530402 A CN202111530402 A CN 202111530402A CN 114396434 A CN114396434 A CN 114396434A
- Authority
- CN
- China
- Prior art keywords
- chuck
- control rod
- output
- temperature gas
- gas cooled
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Images
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
- F16D27/00—Magnetically- or electrically- actuated clutches; Control or electric circuits therefor
- F16D27/02—Magnetically- or electrically- actuated clutches; Control or electric circuits therefor with electromagnets incorporated in the clutch, i.e. with collecting rings
- F16D27/09—Magnetically- or electrically- actuated clutches; Control or electric circuits therefor with electromagnets incorporated in the clutch, i.e. with collecting rings and with interengaging jaws or gear-teeth
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
- F16D27/00—Magnetically- or electrically- actuated clutches; Control or electric circuits therefor
- F16D27/14—Details
-
- G—PHYSICS
- G21—NUCLEAR PHYSICS; NUCLEAR ENGINEERING
- G21C—NUCLEAR REACTORS
- G21C7/00—Control of nuclear reaction
- G21C7/06—Control of nuclear reaction by application of neutron-absorbing material, i.e. material with absorption cross-section very much in excess of reflection cross-section
- G21C7/08—Control of nuclear reaction by application of neutron-absorbing material, i.e. material with absorption cross-section very much in excess of reflection cross-section by displacement of solid control elements, e.g. control rods
- G21C7/12—Means for moving control elements to desired position
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K7/00—Arrangements for handling mechanical energy structurally associated with dynamo-electric machines, e.g. structural association with mechanical driving motors or auxiliary dynamo-electric machines
- H02K7/10—Structural association with clutches, brakes, gears, pulleys or mechanical starters
-
- 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
Abstract
The invention provides an electromagnetic coupling of a driving mechanism of a control rod of a pebble bed type high-temperature gas cooled reactor, which comprises a mounting base, a fixed chuck, an output chuck and a movable chuck, wherein an electromagnetic coil is embedded in the mounting base; the fixed chuck is connected with an output shaft of the driving motor; output chuck connects in the main reducer input shaft, and movable chuck passes through spacing mounting to be connected in output chuck upper end, and movable chuck upper end and fixed chuck lower extreme are equipped with intermeshing's fluted disc, and movable chuck's material is ferromagnetic material, and movable chuck passes through solenoid control and goes up and down, and when movable chuck rises to the fluted disc with fixed chuck engaged with, driving motor's output shaft drive main reducer input shaft synchronous rotation. The invention can realize that the driving motor is separated from the chain wheel and the ring chain when the rods fall in the power failure, the driving motor is not dragged to rotate reversely, and extra damping is not provided for the rod falling, thereby improving the reliability of emergency shutdown and the safety of the reactor core; the occupied space is small, and the device is stable and reliable.
Description
Technical Field
The invention relates to the technical field of reactor engineering, in particular to an electromagnetic coupling of a control rod driving mechanism of a pebble bed type high-temperature gas cooled reactor.
Background
The pebble bed type high-temperature gas cooled reactor is an advanced nuclear reactor which has good inherent safety and can be used for high-efficiency power generation and high-temperature heat supply, and is one of the first-choice reactor types in the fourth generation nuclear energy system in the international nuclear energy field. The driving mechanism of the control rod system of the reactor adopts the control logic of power-off rod dropping, and more reliable shutdown can be realized.
The high-temperature gas cooled reactor control rod driving mechanism is driven by a driving motor, and realizes the lifting, inserting, holding and rod dropping functions of the control rod in a chain wheel and chain transmission mode. In order to realize the passive safety of the reactor, the control rod system adopts the design of a power-off drop rod, namely when the driving mechanism is powered off, the control rod drops and is inserted into the reactor core by means of the gravity of the control rod, so that the fission reaction of the reactor core is stopped, and the effect of safe reactor shutdown is achieved. When the rod falls in a power failure, the rod body of the control rod cannot be separated from the ring chain and the chain wheel, and the driving motor is dragged to become the generator in the falling process of the rod body. The too high speed that can cause the motor breakdown of control rod falling stick speed, driving motor can produce great damping simultaneously, leads to falling stick speed to reduce, increases the stick bite probability that falls.
In order to optimize the damping of a driving mechanism during rod falling in the outage and avoid high-voltage breakdown caused by rapid reversal of a driving motor, the best scheme is that the driving motor is disconnected from a rod body during rod falling in the outage, namely the driving motor is connected with a chain wheel and a ring chain during normal operation, so that the functions of normal rod lifting, rod inserting and rod position keeping are realized, and the driving motor is disconnected from the chain wheel and the ring chain during rod falling in the outage so as to realize that a control rod falls into a reactor core in the outage.
Disclosure of Invention
The present invention is directed to solving, at least to some extent, one of the technical problems in the related art.
The invention aims to provide an electromagnetic coupling for a control rod driving mechanism of a pebble-bed high-temperature gas cooled reactor, which can realize the disconnection of a driving motor from a chain wheel and a ring chain when the rods fall off, the driving motor is not dragged to rotate reversely, the reliability of the rod falling of the control rod driving mechanism of the high-temperature gas cooled reactor when the rods fall off is ensured, the damping of the driving mechanism is reduced, and the safety of a reactor core is improved.
The embodiment of the application provides a ball bed formula high temperature gas cooled reactor control rod drive mechanism electromagnetic coupling, includes: the device comprises a mounting base, a fixed chuck, an output chuck and a movable chuck, wherein the upper end of the mounting base is detachably and fixedly connected with a machine shell of a driving motor of a control rod driving mechanism, the lower end of the mounting base is detachably and fixedly connected with a machine shell of a main speed reducer of the control rod driving mechanism, the fixed chuck, the movable chuck and the output chuck are sequentially arranged in the mounting base from top to bottom, and an electromagnetic coil is embedded in the mounting base; the center of the fixed chuck is fixedly connected to the lower end of an output shaft of the driving motor; the center of the output chuck is fixedly connected to the upper end of an input shaft of the main speed reducer, and the input shaft of the main speed reducer and an output shaft of the driving motor are coaxially arranged; the movable chuck is connected to the upper end of the output chuck through a limiting fixing piece, the upper end of the movable chuck and the lower end of the fixed chuck are provided with mutually meshed fluted discs, the movable chuck is made of ferromagnetic materials and is controlled to ascend and descend through an electromagnetic coil, and when the movable chuck ascends to be meshed with the fluted discs of the fixed chuck, the output shaft of the driving motor drives the input shaft of the main speed reducer to synchronously rotate.
In some embodiments, the limiting fixing part is provided with a plurality of limiting fixing parts, each limiting fixing part comprises a limiting screw and a limiting spring, a stepped hole which is wide at the top and narrow at the bottom is formed in the movable chuck, the limiting screw penetrates through the stepped hole and then is fixed on the output chuck, the limiting spring is clamped in the stepped hole through the end of the limiting screw, the upper end of the limiting spring abuts against the end of the limiting screw, the lower end of the limiting spring abuts against the movable chuck, the movable chuck ascends and descends along the limiting screw, and the limiting spring is compressed or restored along with the movable chuck.
In some embodiments, the limiting screw comprises an end head, a guide part and a threaded part which are sequentially connected from top to bottom, the threaded part is screwed into the output chuck, the limiting spring is sleeved on the guide part, and the outer diameter of the end head is larger than that of the limiting spring.
In some embodiments, the mounting base comprises an inner cylinder and an outer cylinder which are integrally formed, the fixed chuck is arranged in the inner cylinder, the movable chuck and the output chuck are arranged in the outer cylinder, the electromagnetic coil is arranged in an annular clamping groove between the inner cylinder and the outer cylinder and is detachably fixed from the lower end of the annular clamping groove through a coil cover plate, and the side wall of the outer cylinder is provided with a wire passing hole of the electromagnetic coil.
In some embodiments, a boss is arranged on the inner surface of the inner cylinder, a first angular contact ball bearing is clamped between the fixing chuck and the boss, an upper slot for inserting an output shaft of the driving motor is formed in the center of the fixing chuck, a key slot is formed in the inner side wall of the upper slot, and the fixing chuck is connected with the output shaft of the driving motor through a key.
In some embodiments, a lower slot for inserting the input shaft of the main speed reducer is formed in the center of the lower end of the output chuck, a key slot is formed in the inner side wall of the lower slot, and the output chuck is connected with the input shaft of the main speed reducer through a key.
In some embodiments, the movable chuck is provided with a plurality of guide keys along the circumferential direction of the outer circle, and the outer side surface of the output chuck is provided with guide grooves matched with the guide keys in size and shape.
In some embodiments, the lower end of the mounting base is detachably and fixedly connected with a bearing sleeve, the upper end of the bearing sleeve supports the output chuck, and a second angular contact ball bearing is clamped between the bearing sleeve and the input shaft of the main speed reducer.
In some embodiments, the insulating layer of the electromagnetic coil is made of a polyimide material.
In some embodiments, the limiting spring is made of an alloy steel wire.
The invention has the beneficial effects that:
1. the invention can realize that the driving motor is separated from the chain wheel and the ring chain when the rods fall in the power failure, the driving motor is not dragged to rotate reversely, and extra damping is not provided for the rod falling, thereby improving the reliability of emergency shutdown and the safety of the reactor core;
2. the fixed chuck and the movable chuck are engaged in a fluted disc mode, so that the fixed chuck and the movable chuck are reliably engaged and are not easy to fall off;
3. the electromagnetic coil disclosed by the invention is resistant to radiation and high temperature, and can be installed and used in the pressure boundary of a high-temperature gas cooled reactor;
4. the invention has small occupied space, small change to the original system equipment, simple system, stability and reliability.
Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.
Drawings
The above and/or additional aspects and advantages of the present invention will become apparent from and readily appreciated by reference to the following description of the embodiments taken in conjunction with the accompanying drawings,
wherein:
FIG. 1 is a schematic diagram of the internal structure of an electromagnetic coupling of a control rod driving mechanism of a pebble bed high temperature gas cooled reactor in the case of power loss of an electromagnetic coil in the embodiment of the present application;
FIG. 2 is a schematic structural view of a limiting spring and a limiting screw in FIG. 1;
FIG. 3 is a schematic diagram of the internal structure of the electromagnetic coupling of the control rod driving mechanism of the pebble-bed high temperature gas cooled reactor in the case of energizing the electromagnetic coil according to the embodiment of the present invention;
FIG. 4 is a schematic perspective view of an electromagnetic coupling of a driving mechanism of a control rod of a pebble-bed high temperature gas cooled reactor according to an embodiment of the present invention;
FIG. 5 is a schematic diagram of an internal perspective structure of an electromagnetic coupling of a control rod driving mechanism of a pebble bed high temperature gas cooled reactor in the case of power loss of an electromagnetic coil in the embodiment of the present application;
FIG. 6 is a schematic diagram of an internal perspective structure of an electromagnetic coupling of a control rod driving mechanism of a pebble-bed high temperature gas cooled reactor when an electromagnetic coil is energized according to an embodiment of the present invention;
reference numerals:
1-wire passing hole, 2-electromagnetic coil, 3-fixed chuck, 4-movable chuck, 5-limiting spring, 6-limiting screw, 61-end, 62-guide part, 63-threaded part, 7-output chuck, 8-main reducer input shaft, 9-bearing sleeve, 10-driving motor, 11-output shaft, 12-first angular contact ball bearing, 13-mounting base, 131-boss, 132-inner cylinder, 133-outer cylinder, 14-coil cover plate, 15-upper fluted disc, 16-guide key, 17-lower fluted disc, 18-second angular contact ball bearing and 19-guide groove.
Detailed Description
Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings. The embodiments described below with reference to the drawings are illustrative and intended to be illustrative of the invention and are not to be construed as limiting the invention.
The electromagnetic coupling of the control rod driving mechanism of the pebble-bed high-temperature gas cooled reactor according to the embodiment of the invention is described below with reference to the accompanying drawings.
As shown in fig. 1 to 6, the present embodiment provides an electromagnetic coupling for a control rod drive mechanism of a pebble bed high temperature gas cooled reactor, which is installed between a drive motor 10 of the control rod drive mechanism and a final drive of the control rod drive mechanism. The electromagnetic coupling specifically includes: the device comprises a mounting base 13, a fixed chuck 3, an output chuck 7, a movable chuck 4, an electromagnetic coil 2, a coil cover plate 14, a limiting spring 5, a limiting screw 6 and a bearing sleeve 9.
The mounting base 13 is an inner and outer double-layer cylindrical structure, and includes an inner barrel 132, an outer barrel 133, a top flange and a bottom flange which are integrally formed, as shown in fig. 4, the top flange and the bottom flange are respectively provided with mounting holes at four corners, the top flange mounts the casing of the driving motor 10 of the crdm through 4 bolts, and the bottom flange mounts the casing of the main reducer of the crdm through 4 bolts. The mounting base 13 is internally provided with a fixed chuck 3, a movable chuck 4 and an output chuck 7 from top to bottom in sequence. The fixed chuck 3 is arranged in the inner cylinder 132, the movable chuck 4 and the output chuck 7 are arranged in the outer cylinder 133, and the electromagnetic coil 2 is arranged in the annular clamping groove between the inner cylinder 132 and the outer cylinder 133 and is detachably fixed from the lower end of the annular clamping groove through the coil cover plate 14 to protect the electromagnetic coil 2. The side wall of the outer cylinder 133 (i.e. the outer side wall of the ring-shaped clamping groove) is provided with a wire passing hole 1 of the electromagnetic coil 2 for wiring the electromagnetic coil 2. The inner surface of the inner cylinder 132 is provided with a boss 131, and a first angular contact ball bearing 12 is clamped between the fixed chuck 3 and the boss 131.
The coil cover plate 14 is a disk structure and is installed at the bottom of the electromagnetic coil 2 to play a role in sealing and protecting the electromagnetic coil 2.
The electromagnetic coil 2 is wound into a ring shape by using a cable with a high-temperature-resistant and irradiation-resistant polyimide material as an insulating layer, and high insulating property is realized by adopting a vacuum paint dipping technology. The movable chuck 4 is made of ferromagnetic materials, the movable chuck 4 is arranged below the electromagnetic coil 2, and the movable chuck 4 is controlled to ascend and descend through the electromagnetic coil 2.
Fixing chuck 3 installs the upper portion in mounting base 13, and fixing chuck 3 center department opens has last slot, and in the output shaft 11 of driving motor 10 inserted the slot, it had the keyway to go up to open on the inside wall of slot, through the key-type connection between fixing chuck 3 and driving motor 10's the output shaft 11. The center of the fixed chuck 3 is fixedly connected to the lower end of the output shaft 11 after penetrating through the upper slot through a screw, so that the fixed chuck 3 is prevented from falling off in the operation process. The outer surface of the fixing chuck 3 is a stepped surface, and is used for installing the first angular contact ball bearing 12 in cooperation with the boss 131 of the inner cylinder 132, and the first angular contact ball bearing 12 is used for positioning the output shaft 11 of the driving motor 10 in the rotating process. The lower end face of the fixed chuck 3 is welded with the wear-resistant material, and an upper fluted disc 15 is processed on the welding layer.
The movable chuck 4 is formed by processing a high-strength ferromagnetic material and has a flange-shaped structure, the upper end face of the movable chuck 4 is subjected to surfacing wear-resistant material, a lower fluted disc 17 is processed on the surfacing layer, and the engaging teeth of the upper fluted disc 15 and the lower fluted disc 17 can be meshed with each other in the operation process. More than 3 stepped holes have been seted up around fluted disc down to 4 upper surfaces of activity chuck, all install spacing mounting in every stepped hole, and activity chuck 4 passes through spacing mounting to be connected in output chuck 7 upper end. The stepped hole is of a structure with a wide upper part and a narrow lower part. Each limiting fixing piece comprises a limiting screw 6 and a limiting spring 5, and the limiting screw 6 penetrates through the stepped hole and then is fixed on the output chuck 7. As shown in fig. 2, the limit screw 6 has three steps, and includes an end 61, a guide 62 and a threaded portion 63 connected in sequence from top to bottom, wherein the diameter of the end 61 is larger than that of the guide 62, and the diameter of the guide 62 is larger than the outer diameter of the threaded portion 63. The diameter of the upper part of the stepped hole is slightly larger than that of the end head 61, and the diameter of the lower part of the stepped hole is slightly larger than that of the guide part 62. The threaded part 63 is screwed into the output chuck 7, the limiting spring 5 is sleeved on the guide part 62, and the limiting spring 5 is clamped in the stepped hole through the end 61. The diameter of the end 61 is larger than the outer diameter of the limiting spring 5, so that the limiting spring 5 is in a compressed state when the movable chuck 4 is engaged with the fixed chuck 3. The upper end of the limiting spring 5 props against the end 61 of the limiting screw 6, and the lower end of the limiting spring 5 props against the movable chuck 4. The limiting spring 5 is a steel wire spring, is made of high-temperature-resistant 90 alloy steel wires, is high-temperature-resistant and irradiation-resistant, and can keep better resilience performance in a high-temperature environment. The movable chuck 4 is lifted along the limit screw 6, and the limit spring 5 is compressed or restored along with the lifting.
When the electromagnetic coil 2 is electrified, as shown in fig. 3 and 6, the movable chuck 4 rises, the limiting spring 5 is compressed, the lower toothed disc 17 of the movable chuck 4 is meshed with the upper toothed disc 15 of the fixed chuck 3, and the output shaft 11 of the driving motor 10 drives the input shaft 8 of the main speed reducer to synchronously rotate. When the electromagnetic coil 2 is de-energized, as shown in fig. 1 and 5, the movable chuck 4 can be restored to the original position under the action of the resilience force and the self gravity of the limiting spring 5, so that the movable chuck 4 is disengaged from the fixed chuck 3.
The movable chuck 4 is provided with more than 3 guide keys 16 downwards along the outer circumference, and the guide keys are matched with the guide grooves 19 of the output chuck 7, so that the movable chuck 4 plays a role of limiting and guiding when moving up and down.
The lower end of the main reducer input shaft 8 is of a bevel gear structure and is in meshing transmission with the control rod main reducer. The final drive input shaft 8 is arranged coaxially with the output shaft 11 of the drive motor 10. The upper shaft end of the main speed reducer input shaft 8 is provided with a key groove and is connected with the output chuck 7 through a flat key.
The lower end of the mounting base 13 is detachably and fixedly connected with a bearing sleeve 9, the bearing sleeve 9 is of a T-shaped flange structure, the upper portion of the bearing sleeve 9 is used for mounting and positioning, the upper end of the bearing sleeve 9 supports the output chuck 7, and a second angular contact ball bearing 18 is clamped between the bearing sleeve 9 and the middle portion of the main reducer input shaft 8. The center of the bearing sleeve 9 is provided with a hole for installing and positioning the second angular contact ball bearings 18 at two ends of the input shaft 8 of the main speed reducer, so as to provide support for the speed reducer shaft.
The driving motor 10 is a driving motor of the control rod driving mechanism and provides power for lifting, holding and inserting the control rods, and the driving motor 10 transmits the rotary motion to the chain wheel and the chain through the main speed reducer through the output shaft 11.
When the electromagnetic coupling normally operates, the electromagnetic coil 2 of the electromagnetic coupling is electrified to generate an electromagnetic field, the movable chuck 4 is made of ferromagnetic materials, the movable chuck 4 is lifted under the action of the electromagnetic field generated by the electromagnetic coil 2, the lower fluted disc 17 of the movable chuck 4 is meshed with the upper fluted disc 15 of the fixed chuck 3, and the driving motor 10 of the control rod driving mechanism is connected with the main speed reducer, the chain wheel and the ring chain. The rotation of the output shaft 11 of the driving motor 10 at this time can achieve the lifting, holding or inserting of the control rod.
When a rod drop accident occurs, the electromagnetic coil 2 of the electromagnetic coupling loses power, the movable chuck 4 descends under the action of the resilience force of the limiting spring 5 and the self gravity, so that the lower fluted disc 17 of the movable chuck 4 is separated from the upper fluted disc 15 of the fixed chuck 3, and the driving motor 10 of the control rod driving mechanism is separated from the main speed reducer, the chain wheel and the ring chain. At this time, the control rod loses the holding torque and is inserted downwards by means of gravity. Because the driving motor 10 is separated from the main speed reducer, the main speed reducer does not drive the driving motor 10 to rotate reversely when rotating reversely, the rod falling process is not influenced by the damping of the driving motor 10, and smaller damping and higher safety can be realized.
In the description of the present invention, it is to be understood that the terms "central," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," "circumferential," and the like are used in the orientations and positional relationships indicated in the drawings for convenience in describing the invention and to simplify the description, and are not intended to indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and are therefore not to be considered limiting of the invention.
Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.
In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can, for example, be fixedly connected, detachably connected, or integrally formed; may be mechanically coupled, may be electrically coupled or may be in communication with each other; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
In the present invention, unless otherwise expressly stated or limited, the first feature "on" or "under" the second feature may be directly contacting the first and second features or indirectly contacting the first and second features through an intermediate. Also, a first feature "on," "over," and "above" a second feature may be directly or diagonally above the second feature, or may simply indicate that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature.
In the present disclosure, the terms "one embodiment," "some embodiments," "an example," "a specific example," or "some examples" and the like mean that a specific feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present disclosure. In this specification, the schematic representations of the terms used above are not necessarily intended to refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, various embodiments or examples and features of different embodiments or examples described in this specification can be combined and combined by one skilled in the art without contradiction.
Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention, and that variations, modifications, substitutions and alterations can be made to the above embodiments by those of ordinary skill in the art within the scope of the present invention.
Claims (10)
1. The utility model provides a pebble bed formula high temperature gas cooled reactor control rod drive mechanism electromagnetic coupling which characterized in that includes:
the upper end of the mounting base is detachably and fixedly connected with a shell of a driving motor of the control rod driving mechanism, the lower end of the mounting base is detachably and fixedly connected with a shell of a main speed reducer of the control rod driving mechanism, a fixed chuck, a movable chuck and an output chuck are sequentially arranged in the mounting base from top to bottom, and an electromagnetic coil is embedded in the mounting base;
the center of the fixed chuck is fixedly connected to the lower end of an output shaft of the driving motor;
the center of the output chuck is fixedly connected to the upper end of an input shaft of the main speed reducer, and the input shaft of the main speed reducer and an output shaft of the driving motor are coaxially arranged;
the movable chuck, the movable chuck passes through spacing mounting and connects in output chuck upper end, and movable chuck upper end and fixed chuck lower extreme are equipped with intermeshing's fluted disc, and the material of movable chuck is ferromagnetic material, and the movable chuck passes through solenoid control and goes up and down, and when the movable chuck rises to the fluted disc with fixed chuck engaged with, driving motor's output shaft drive main reducer input shaft synchronous rotation.
2. The pebble bed high temperature gas cooled reactor control rod drive mechanism electromagnetic coupling as claimed in claim 1, wherein the limiting fixing pieces are provided with a plurality of limiting fixing pieces, each limiting fixing piece comprises a limiting screw and a limiting spring, the movable chuck is provided with a stepped hole with a wide upper part and a narrow lower part, the limiting screw passes through the stepped hole and then is fixed on the output chuck, the limiting spring is clamped in the stepped hole through the end head of the limiting screw, the upper end of the limiting spring abuts against the end head of the limiting screw, the lower end of the limiting spring abuts against the movable chuck, the movable chuck ascends and descends along the limiting screw, and the limiting spring is compressed or restored along with the limiting spring.
3. The pebble bed high temperature gas cooled reactor control rod drive mechanism electromagnetic coupling as claimed in claim 2, wherein the limit screw comprises an end head, a guide part and a threaded part which are sequentially connected from top to bottom, the threaded part is screwed into the output chuck, the limit spring is sleeved on the guide part, and the outer diameter of the end head is larger than that of the limit spring.
4. The pebble bed high temperature gas cooled reactor control rod drive mechanism electromagnetic coupling as claimed in claim 1, wherein the mounting base comprises an inner cylinder and an outer cylinder which are integrally formed, a fixed chuck is arranged in the inner cylinder, a movable chuck and an output chuck are arranged in the outer cylinder, the electromagnetic coil is arranged in an annular clamping groove between the inner cylinder and the outer cylinder and is detachably fixed from the lower end of the annular clamping groove through a coil cover plate, and the side wall of the outer cylinder is provided with a wire passing hole of the electromagnetic coil.
5. The electromagnetic coupling for the control rod drive mechanism of the pebble bed high temperature gas cooled reactor as claimed in claim 4, wherein the inner surface of the inner cylinder is provided with a boss, a first angular contact ball bearing is clamped between the fixed chuck and the boss, the center of the fixed chuck is provided with an upper slot for inserting the output shaft of the drive motor, the inner side wall of the upper slot is provided with a key slot, and the fixed chuck and the output shaft of the drive motor are connected through a key.
6. The electromagnetic coupling for the control rod driving mechanism of the pebble bed high temperature gas cooled reactor as claimed in claim 1, wherein a lower slot for inserting the input shaft of the main reducer is formed in the center of the lower end of the output chuck, a key slot is formed in the inner side wall of the lower slot, and the output chuck is connected with the input shaft of the main reducer through a key.
7. The electromagnetic coupling for the control rod drive mechanism of the pebble bed high-temperature gas cooled reactor as claimed in any one of claims 1 to 6, wherein a plurality of guide keys are arranged on the movable chuck along the circumferential direction of the outer circle, and a guide groove matched with the size and the shape of each guide key is arranged on the outer side surface of the output chuck.
8. The electromagnetic coupling for the control rod drive mechanism of the pebble bed high temperature gas cooled reactor as claimed in claim 1, wherein the lower end of the mounting base is detachably and fixedly connected with a bearing sleeve, the upper end of the bearing sleeve supports the output chuck, and a second angular contact ball bearing is clamped between the bearing sleeve and the input shaft of the main speed reducer.
9. The electromagnetic coupling for the control rod drive mechanism of the pebble bed high temperature gas cooled reactor as claimed in claim 1, wherein the insulating layer of the electromagnetic coil is made of polyimide.
10. The electromagnetic coupling for the control rod drive mechanism of the pebble bed high temperature gas cooled reactor as claimed in claim 2, wherein the material of the limiting spring is an alloy steel wire.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111530402.9A CN114396434A (en) | 2021-12-14 | 2021-12-14 | Electromagnetic coupling of control rod driving mechanism of pebble bed type high-temperature gas cooled reactor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111530402.9A CN114396434A (en) | 2021-12-14 | 2021-12-14 | Electromagnetic coupling of control rod driving mechanism of pebble bed type high-temperature gas cooled reactor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN114396434A true CN114396434A (en) | 2022-04-26 |
Family
ID=81227278
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111530402.9A Pending CN114396434A (en) | 2021-12-14 | 2021-12-14 | Electromagnetic coupling of control rod driving mechanism of pebble bed type high-temperature gas cooled reactor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN114396434A (en) |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2001254762A (en) * | 2000-03-08 | 2001-09-21 | Aisin Seiki Co Ltd | Variable rotational speed coupling |
| FR2904074A1 (en) * | 2006-07-24 | 2008-01-25 | Peugeot Citroen Automobiles Sa | ELECTROMAGNETIC CLUTCH DEVICE WITH DOUBLE FRICTION CONE AND FIXED COILS, AND MULTI-OUTPUT MECHANICAL TRANSMISSION MECHANISM HAVING SUCH A CLUTCH DEVICE |
| CN105008745A (en) * | 2013-01-09 | 2015-10-28 | 德纳汽车系统集团有限责任公司 | Electromagnetc axle disconnect system |
| CN105864315A (en) * | 2016-05-12 | 2016-08-17 | 精进电动科技（北京）有限公司 | Electromagnetic tooth embedded type clutch |
| CN208982622U (en) * | 2018-08-28 | 2019-06-14 | 宁波智启机电有限公司 | A kind of tube shaped electric machine deceleration mechanism with arrangement of clutch |
| CN110945260A (en) * | 2017-09-06 | 2020-03-31 | 优尼邦斯股份有限公司 | Clutch and power transmission structure for vehicle |
| CN110953265A (en) * | 2019-12-16 | 2020-04-03 | 蚌埠凯盛工程技术有限公司 | Special clutch for swing angle motor of glass edge roller |
| CN213870829U (en) * | 2020-12-18 | 2021-08-03 | 无锡市科瑞特精机有限公司 | Shaft coupling with small axial deviation |
-
2021
- 2021-12-14 CN CN202111530402.9A patent/CN114396434A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2001254762A (en) * | 2000-03-08 | 2001-09-21 | Aisin Seiki Co Ltd | Variable rotational speed coupling |
| FR2904074A1 (en) * | 2006-07-24 | 2008-01-25 | Peugeot Citroen Automobiles Sa | ELECTROMAGNETIC CLUTCH DEVICE WITH DOUBLE FRICTION CONE AND FIXED COILS, AND MULTI-OUTPUT MECHANICAL TRANSMISSION MECHANISM HAVING SUCH A CLUTCH DEVICE |
| CN105008745A (en) * | 2013-01-09 | 2015-10-28 | 德纳汽车系统集团有限责任公司 | Electromagnetc axle disconnect system |
| CN105864315A (en) * | 2016-05-12 | 2016-08-17 | 精进电动科技（北京）有限公司 | Electromagnetic tooth embedded type clutch |
| CN110945260A (en) * | 2017-09-06 | 2020-03-31 | 优尼邦斯股份有限公司 | Clutch and power transmission structure for vehicle |
| CN208982622U (en) * | 2018-08-28 | 2019-06-14 | 宁波智启机电有限公司 | A kind of tube shaped electric machine deceleration mechanism with arrangement of clutch |
| CN110953265A (en) * | 2019-12-16 | 2020-04-03 | 蚌埠凯盛工程技术有限公司 | Special clutch for swing angle motor of glass edge roller |
| CN213870829U (en) * | 2020-12-18 | 2021-08-03 | 无锡市科瑞特精机有限公司 | Shaft coupling with small axial deviation |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JP6023042B2 (en) | Control rod drive mechanism and device for nuclear reactor | |
| KR20120089620A (en) | Control rod drive mechanism for nuclear reactor | |
| US11120919B2 (en) | Small modular reactor fuel assembly | |
| JP2014503812A (en) | Electric control rod drive mechanism device for reactor internal structure | |
| CN101159172B (en) | Non-passive safety driving mechanism applied to high temperature gas cooled reactor absorption ball shut-down system | |
| US10163530B2 (en) | Nuclear reactor with screw-nut drive of core reactivity control members | |
| CN105788668A (en) | Split nut driven control rod drive mechanism | |
| CN111364389B (en) | Outer rotor motor floodgate machine | |
| CN111081394A (en) | Reactivity control device for small nuclear reactor | |
| CN114396434A (en) | Electromagnetic coupling of control rod driving mechanism of pebble bed type high-temperature gas cooled reactor | |
| WO2024037478A1 (en) | Absorber ball shutdown device | |
| US20120148006A1 (en) | Nuclear reactor control rod drive mechanism | |
| US20150255178A1 (en) | Control Rod Drive Mechanism | |
| US3741867A (en) | Control rod drive system | |
| JP7399044B2 (en) | Control rod drives and reactors | |
| US4587084A (en) | Control rod drive | |
| CN103299371B (en) | Nuclear fuel rod plenum chamber spring assembly | |
| CN106653104B (en) | A kind of reactive controlling organization for liquid heavy metal cooled reactor | |
| CN108347129A (en) | A kind of command bundle rods for nuclear reactors driving mechanism | |
| CN220703097U (en) | Car lifting machine contour limiting device for wind power generation tower | |
| US11342083B2 (en) | Integrated nuclear reactor architecture limiting the stress applied to the integrated mechanisms | |
| CN210724320U (en) | Uninterrupted emergency power supply device | |
| CN115376709A (en) | Motor lead screw type control rod driving mechanism and driving method thereof | |
| CN117577355A (en) | Nuclear reactor driving mechanism | |
| JPH0521435B2 (en) |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination |