CN101110279B - Device for driving control rod, method and device for testing, and torque-converter transmission - Google Patents
Device for driving control rod, method and device for testing, and torque-converter transmission Download PDFInfo
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- CN101110279B CN101110279B CN2006101416630A CN200610141663A CN101110279B CN 101110279 B CN101110279 B CN 101110279B CN 2006101416630 A CN2006101416630 A CN 2006101416630A CN 200610141663 A CN200610141663 A CN 200610141663A CN 101110279 B CN101110279 B CN 101110279B
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- 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
- G21C7/14—Mechanical drive arrangements
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- 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
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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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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Plasma & Fusion (AREA)
- General Engineering & Computer Science (AREA)
- High Energy & Nuclear Physics (AREA)
- Monitoring And Testing Of Nuclear Reactors (AREA)
Abstract
An induction motor (35) is used as a power source for driving a control rod. A plurality of switches (40,40) are provided for connecting and disconnecting the power supply to the induction motor. The switches are controlled separately through different command signal paths by a controller (42).
Description
The application is that application number is 200510006740.7 division.
Technical field
The present invention relates to control rod drive and test method thereof, test unit, and the torque transmitter that is applicable to control rod drive.
Background technology
Control rod drive mechanisms (CRD) is integral with control rod, is used to control the degree of reaction of nuclear reactor, is very important to equipment operation and safety.Fig. 7 represents electronic control rod drive mechanisms (CRD) before.
Fig. 7 is a skiagraph, and expression is located at the nuclear reactor pressure container bottom of boiling water type nuclear reactor (BWR), the power type control rod drive mechanisms (CRD) (CRD) of drive controlling rod (CR) lifting.This control rod drive mechanisms (CRD) has the motor unit zoarium in the bottom, the vertical rotating shaft 1 of motor unit zoarium is connected with the vertical drive shaft 3 of top by gear coupling 2.The screw axis 4 that is connecting the one rotation on driving shaft 3, screw axis 4 screws togather by ball and the nut 5 that figure does not show, forms the ball screw mechanism.Nut 5 is by the rotation of screw axis 4 and lifting moving.
At the peripheral part of nut 5, be provided with the some pair rollers 6 that disposing in pairs up and down, these rollers 6 are being seized the direction of principal axis installing plate 8 that is formed on conduit 7 inner peripheral surfaces on both sides by the arms.On the top of nut 5, be provided with the hollow piston that stretches out towards the top 9 that surrounds screw axis 4, in the upper end of this hollow piston 9, connecting control rod 11 by shaft coupling 10.
Be provided with spring 16 in the bottom of screw axis 4, when making nut 5 mobile above the full withdrawing of control rod position downwards, nut 5 is with spring 16 compressions.In this manual, nut 5 is being compressed the state of spring 16, be called by " machinery lower limit state ".
Be provided with bolster 17 on the top of outer tube 13, when the full insertion state that makes nut 5 surpass control rod was moved upward, this bolster 17 was set at hollow piston 9 compressions on nut 5 tops.At this instructions, hollow piston 9 is being compressed the state of bolster 17, be called by " machinery upper limit state ".
The motor unit zoarium has motor 18, electromagnetic brake 19 and position detecting device 20.Motor 18 carries out the driving of control rod, and the position that electromagnetic brake 19 carries out control rod keeps, and position detecting device 20 carries out the location confirmation of control rod.In the power type control rod drive mechanisms (CRD) in the present existing modified form boiling water type nuclear reactor (ABWR), motor 18 is to adopt step motor, and motor power 21 is to adopt the paraphase power supply.
The motor unit zoarium is connected with diskware 14 by support of motor 22.
In the breakthrough part of the driving shaft 3 in the diskware 14, use gland packing 23.
In diskware 14, be provided with volute spring 24 and magnet room 26, in this magnet room 26, be provided with the separation detection magnet 25 that is bearing on the volute spring 24.The different occasions of separating from nut 5 according to hollow piston 9 etc., when the loading on being added in volute spring 24 reduced, then volute spring 24 stretched, and thereupon, separation detection magnet 25 is moved upward.
Be provided with separation detection gauge head 27 in the outside of diskware 14, this gauge head 27 built-in by the reed switch of magnetic force start, can detect moving of separation detection magnet 25.
In the control rod drive mechanisms (CRD) of Gou Chenging, when making motor 18 rotations, screw axis 4 rotates by turning axle 1 and driving shaft 3 like this, and the rotation of this screw axis 4 makes nut 5 moving up and down.At this moment, nut 5 is mounted the plate restriction by roller 6 its rotations and moves up and down.With moving linkedly up and down of nut 5, hollow piston 9 and control rod 11 are moving up and down, by moving up and down of this control rod 11, regulate insertion amount and withdrawing amount toward the stove heart, and stove is exported Be Controlled.
During scram,, pushed to rapidly, separate, make control rod 11 insert the stove heart hastily with nut 5 by the hydraulic pressure of supplying with from the hydraulic pressure control module by shaft coupling 10 and control rod 11 conjugate hollow pistons 9.At this moment, hollow piston 9 separates with nut 5, is detected by separation detection gauge head 27.In addition, the position of the control rod 11 in the scram and behind the scram is detected by scram position probing gauge head 30.
During the control rod friction determination test implemented when making regular check on, the control rod determination test device that rubs is connected on the hydraulic pressure control module, supplies with hydraulic pressure to control rod drive, like this control rod is inserted the stove heart by above-mentioned test unit.The action of control rod drive mechanisms (CRD) at this moment, except insertion speed was slow, the action during with scram was same.In the control rod friction determination test, the control rod and the Frotteurism of machine are on every side confirmed in the hydraulic pressure change when measuring above-mentioned insertion.
In the above-mentioned control rod drive mechanisms (CRD), as the axle envelope portion of diskware 14, be to adopt gland packing 23, in addition, motor 18 is the step motor that adopt the paraphase power supply.In recent years, for control rod drive mechanisms (CRD), improved following improvement: (1) removes the axle envelope portion of diskware by adopting magnetic joint (magnet shaft coupling).(2) change motor type (induction motorization) etc.Improve in Japanese kokai publication hei 10-132997 communique and the flat 10-274688 of Te Kai number about these and to disclose.
But, in these control rod drive mechanisms (CRD), the improvement of still needing aspect following.
In the existing electronic control rod drive mechanisms (CRD) shown in Figure 7, motor is to adopt step motor, and motor power is to adopt the paraphase power supply, exists system complex, power supply thing amount problem how.In the control rod drive mechanisms (CRD) in for this reason just studying at present, the employing induction motor, require power-supply system to oversimplify.In addition, adopt the supply unit and the control device of induction motor also not to reach optimization, about confirming the mechanism of driveability viability, still untappedly go out.
In addition, adopt in the control rod drive mechanisms (CRD) of magnetic joint, though the structure of magnetic joint itself, specification are just under study for action, about establishment as yet such as maintenance, test mechanism.
Just in case during the imbalance of magnetic joint, the physical location of control rod may be indeterminate.For this reason, though several schemes of addressing this problem have been proposed in recent years, system complex, impracticable, still require to establish rational testing agency.
In addition, when using the magnetic joint in water, just in case cover the overcoat damage of magnetic joint, built-in magnet contacts with water, and the magnetic joint performance is worsened.For this reason, even wish to have a kind of mechanism that also can guarantee magnetic joint function when producing the above-mentioned state of affairs.
In the control rod friction determination test before, be that the determination test device that at the scene control rod rubbed is connected on each hydraulic pressure control module successively, implement test on one side, big with conflicting of engineering, in addition, above-mentioned connection operation is the operation in the radioactive ray management area, from improving the viewpoint of operation, minimizing radiation, requires more easy test method.
Disclosure of an invention
The present invention makes in view of the above problems, and its purpose is to provide control rod drive mechanisms (CRD), and with the establishment of the relation of supply unit and control device, maintain, the establishment of test mechanism, provide a kind of reliability high control rod drive mechanisms (CRD).
The invention provides a kind of control rod drive, be used to make the control rod lifting of nuclear reactor to drive, it is characterized in that having motor, torque transmitter and driving mechanism, above-mentioned torque transmitter has the magnetic joint that comprises the 1st joint component and the 2nd joint component, above-mentioned the 1st joint component built-in some magnet, and be connected with the 1st; Above-mentioned the 2nd joint component built-in some magnet, and be connected with the 2nd; Above-mentioned torque transmitter also has the 1st overcoat and the 2nd overcoat, above-mentioned the 1st overcoat watertight ground or coat whole magnet of the 1st joint component airtightly; Above-mentioned the 2nd overcoat watertight ground or coat whole magnet of the 2nd joint component airtightly; In addition, also have either party at least in the 3rd overcoat and the 4th overcoat; The above-mentioned the 3rd outer inboard that is enclosed within above-mentioned the 1st overcoat, watertight ground or coating airtightly are built in part or all magnet of above-mentioned the 1st joint component; The above-mentioned the 4th outer inboard that is enclosed within above-mentioned the 2nd overcoat, watertight ground or coating airtightly are built in part or all magnet of above-mentioned the 2nd joint component; Above-mentioned driving mechanism passes to control rod with the driving force that above-mentioned motor produces by above-mentioned torque transmitter, makes the control rod lifting.
In addition, control rod drive of the present invention, be used to make the control rod lifting of nuclear reactor to drive, it is characterized in that having motor, torque transmitter and driving mechanism, above-mentioned torque transmitter has the magnetic joint that comprises the 1st joint component and the 2nd joint component, above-mentioned the 1st joint component built-in some magnet, and be connected with the 1st; Above-mentioned the 2nd joint component built-in some magnet, and be connected with the 2nd; Above-mentioned torque transmitter also has the 1st overcoat and the 2nd overcoat, above-mentioned the 1st overcoat watertight ground or coat whole magnet of the 1st joint airtightly; Above-mentioned the 2nd overcoat watertight ground or coat whole magnet of the 2nd joint airtightly; In addition, also have either party at least in the 3rd overcoat and the 4th overcoat; The above-mentioned the 3rd outer inboard that is enclosed within the 1st overcoat, watertight ground or coating airtightly are built in part or all magnet of the 1st joint; The above-mentioned the 4th outer inboard that is enclosed within the 2nd overcoat, watertight ground or coating airtightly are built in part or all magnet of the 2nd joint; Above-mentioned driving mechanism passes to control rod with the driving force that motor produces by above-mentioned torque transmitter, makes the control rod lifting; In inside, diskware next door, be provided with the 1st joint component of above-mentioned torque transmitter; In outside, diskware next door, be provided with the 2nd joint component of above-mentioned torque transmitter; Under the state that the magnet that is coated by the 3rd overcoat in above-mentioned the 1st joint component plays a role, the magnet that is not coated by the 3rd overcoat of above-mentioned the 1st joint component does not play a role, make above-mentioned torque transmitter have the maximum delivered moment of torsion, this maximum delivered moment of torsion is when nuclear reactor turns round usually more than the required torque of retentive control rod position.
According to the 1st viewpoint of the present invention, provide control rod drive with following feature.
The 1st feature is that the source takes place the driving force of control rod, does not adopt motor among the FMCRD before, that utilize the paraphase power supply, but adopts induction motor, and multipleization of switch that makes the on-off that carries out induction motor, and each switch can be switched independently.Like this, can realize the simplification and the optimization of power supply and control device, in addition, prevent that the control rod of misoperation etc. from driving, improve reliability.
The 2nd feature is, adopts induction motor as the driving force of control rod the source to take place, and, monitor the control rod actuating speed of calculating according to the position probing of control rod.Induction motor correspondingly changes its rotational speed with load.By measuring the control rod actuating speed, can grasp the state variation of the control rod drive mechanisms (CRD) that causes because of load change etc., according to state, the measure that can carry out that state demonstration, alarm and driving stop etc.
The 3rd feature is, in control rod drive, the stop position of mensuration control rod or the mechanism that control rod drives distance are set, stop position that determines or control rod are driven distance, control rod stop position of setting when perfecting with control rod drive or control rod drive apart from comparing.Like this, consider load change, deterioration of control rod drive mechanisms (CRD) etc., can confirm whether control rod drive mechanisms (CRD) has sound driveability, can carry out measures such as state demonstration, alarm according to state.
The 4th feature is, some detents are set on control rod drive mechanisms (CRD), makes the time ground action of staggering of some detents.Like this, can lower the burden of a detent.In addition, if several detents are separately used as braking and maintenance usefulness, promptly, when axle rotates, keep or the braking usefulness of braking maneuver, when the axle rotation stops, braking or the maintenance that keeps moving is used, then can prevent to be used to keep the detent of usefulness to reduce, the hold facility in the time of can improving the axle rotation, the reliability of control rod position hold facility of improving because of abrasion cause confining force.
The 5th feature is, some detents are set on control rod drive mechanisms (CRD), keeps moment of torsion during independent static of each detent, is set in nuclear reactor and keeps more than the required moment of torsion control rod position when turning round usually.Like this, just in case the afunction of a detent, the position that also can carry out control rod conscientiously keeps, and improves reliability.
The 6th feature is,, is provided with in the control rod drive mechanisms (CRD) of magnetic joint on the path of control rod transmission of drive force from motor, is provided with testing agency, this testing agency detect the magnetic joint by the parts of motor side with by the position of rotation of the parts of control rod side.Like this, just in case magnetic joint when imbalance,, can detect this imbalance by two position of rotation relatively, can be according to state, the demonstration of employing state, alarm, the measure that stops to drive etc.
According to the 2nd viewpoint of the present invention, provide the test method of control rod drive, in this control rod drive mechanisms (CRD), adopt the drive source of induction motor, it is characterized in that, when carrying out the driving of control rod as control rod, detect the translational speed of control rod, perhaps detect electric current, voltage, the electric power of supplying with induction motor,, measure control rod and driving mechanism and its friction of parts on every side according to absolute value or its change of these detected values.
Induction motor correspondingly changes its rotational speed with load.When the load change of induction motor, also change toward the supply condition of induction motor supply of electrical energy.Therefore, by measuring the control rod actuating speed or supplying with absolute value or its change of the energy of induction motor, just can confirm the load change of control rod friction etc.When the making regular check on of boiling water type atomic power plant, carry out the control rod friction and measure, by with above-mentioned method mensuration, not only operation is simple, shortens flow chart, and can implement this operation outside the radioactive ray management area of central control room etc., improve operation, reduce irradiation.
According to the 3rd viewpoint of the present invention, provide new test unit and test method.This test unit and test method are applicable to the control rod drive that has the motor unit zoarium, diskware, magnetic joint and the driving mechanism that comprise motor, and above-mentioned magnetic joint has a pair of magnetic joint component that is separated by diskware; At the state that diskware is installed on the driving mechanism, can confirm the viability of magnetic joint.
Test unit comprises moment of torsion applying mechanism and torque rating mechanism, above-mentioned moment of torsion applying mechanism, at the state that diskware is installed on the above-mentioned driving mechanism,, apply moment of torsion to constituting joint component above-mentioned magnetic joint, the fit side of above-mentioned motor unit or the axle that is being connected with this joint component; Above-mentioned torque rating mechanism is used to measure the moment of torsion that applies.
Test method is the situation that is applicable to when driving mechanism has ball screw mechanism (this ball screw mechanism is transformed to rectilinear motion with rotatablely moving that motor produces).This method is, at the state that diskware is installed on the driving mechanism, make the position of the nut that constitutes the ball screw mechanism become the upper limit state of the lower limit state of machinery or machinery, to constituting the joint component magnetic joint, the fit side of motor unit or the axle that is being connected with this joint component, apply moment of torsion, judge that the magnetic joint has no abnormal.In addition, at this moment, at the state that the motor unit zoarium is installed on the driving mechanism, make the axle rotation of motor unit zoarium from the bottom of motor unit zoarium, by the axle of motor unit zoarium,, apply moment of torsion to the joint component of the fit side of motor unit or the axle that is being connected with this element.
According to above-mentioned test unit and test method, when confirming the viability of magnetic joint, needn't unload diskware, the workload in the time that regular inspections of equipment can being reduced, operation, irradiation.
According to the 4th viewpoint of the present invention, provide new test unit, this test unit is applicable to the control rod drive that has the motor unit zoarium, diskware, magnetic joint and the driving mechanism that comprise motor, and above-mentioned magnetic joint has the pair of joint element that is separated by diskware; At the state that diskware is installed on the driving mechanism, can confirm the viability of magnetic joint and diskware.
This test unit comprises rotation condition mechanism and moment of torsion applying mechanism.Above-mentioned rotation condition mechanism can connect with the axle that constitutes magnetic joint component joint, the control rod side or be connected with this joint component, the rotation of the joint component of constraint control rod side or the axle that is being connected with this joint component.Above-mentioned moment of torsion applying mechanism, can with constitute the joint component magnetic joint, the fit side of motor unit or the axle that is being connected with this joint component and connect, to the joint component of the fit side of motor unit or the axle that is being connected with this joint component, apply moment of torsion.
Among other embodiment, test unit comprises moment of torsion applying mechanism and rotation condition mechanism.Above-mentioned moment of torsion applying mechanism can connect with the axle that constitutes magnetic joint component joint, the control rod side or be connected with this joint component, to the joint component of control rod side or the axle that is being connected with this joint component, applies moment of torsion.Above-mentioned rotation condition mechanism, can with constitute the joint component magnetic joint, the fit side of motor unit or the axle that is being connected with this joint component and connect the rotation of the joint component of the fit side of constraint motor unit or the axle that is being connected with this joint component.
Test unit can also have torque limiter, this torque limiter, can connect with the joint component of control rod side or the axle that is being connected with this joint component, perhaps connect, be used for the moment of torsion that the torque limiting applying mechanism applies with the joint component of the fit side of motor unit or the axle that is being connected with this joint component.
Test unit can also have rotation angle and measure mechanism, this rotation angle is measured mechanism, can connect with the joint component of control rod side or the axle that is being connected with this joint component, perhaps connect with the joint component of the fit side of motor unit or the axle that is being connected with this joint component, the anglec of rotation of the axle that is used to measure the joint component of control rod side or is being connected with this joint component is perhaps measured the joint component of the fit side of motor unit or the anglec of rotation of the axle that is being connected with this joint component.
Like this, when diskware is unloaded,, just can confirm the viability of magnetic connector portions by measuring the transmission moment of torsion of magnetic connector portions.When having unloaded diskware, test in the good place of operating environment that can be outside accepting container, can improve operation, reduces irradiation.
Test unit can also have pressure feed mechanism and piezometry mechanism.Above-mentioned pressure feed mechanism pressurizes to diskware inside, and above-mentioned piezometry mechanism measures the diskware pressure inside.Like this, when having unloaded diskware,, can implement withstand voltage test by to the pressurization of inside portion, diskware next door.
The 5th viewpoint according to the present invention provides the testing fixture of control rod drive.This control rod drive has motor unit zoarium, diskware, magnetic joint and the driving mechanism that comprises motor; Above-mentioned magnetic joint has the pair of joint element that is separated by diskware; Above-mentioned driving mechanism passes to control rod with the driving force that above-mentioned motor produces by above-mentioned magnetic joint, makes the control rod lifting.This testing fixture comprises the 1st radial position fixed mechanism and the 2nd radial position fixed mechanism; Above-mentioned the 1st radial position fixed mechanism, the position of a square joint element that constitutes the magnetic joint or the axle that is being connected with this joint component, direction is fixed in the footpath.Above-mentioned the 2nd radial position fixed mechanism, the position of the opposing party's joint component that constitutes the magnetic joint or the axle that is being connected with this joint component, direction is fixed in the footpath.Use this testing fixture, the state in that the axis of above-mentioned diskware and each joint component is fixing carries out the decomposition or the assembling of diskware.
Since the magnetic joint built-in powerful magnet, so if decompose at the state of fixed axis not/when assemble, the attractive force of inboard and outside magnetic joint or magnetic joint magnetic on every side makes the magnetic joint run into diskware wall part etc., may damage the magnetic joint.At the state that axis is being fixed, carry out inboard magnetic joint and outside magnetic joint decomposition/assembling, can prevent the machine damage, can decompose safely/assembling operation.
The 6th viewpoint according to the present invention provides new torque transmitter, and this torque transmitter has the magnetic joint that comprises the 1st joint component and the 2nd joint component, above-mentioned the 1st joint component built-in some magnet, and be connected with the 1st; Above-mentioned the 2nd joint component built-in some magnet, and be connected with the 2nd; It is characterized in that, also have the 1st overcoat and the 2nd overcoat, above-mentioned the 1st overcoat watertight ground or coat whole magnet of the 1st joint airtightly; Above-mentioned the 2nd overcoat watertight ground or coat whole magnet of the 2nd joint airtightly; In addition, also have at least one side in the 3rd overcoat and the 4th overcoat; The above-mentioned the 3rd outer inboard that is enclosed within the 1st overcoat, watertight ground or coating airtightly are built in part or all magnet of the 1st joint; The above-mentioned the 4th outer inboard that is enclosed within the 2nd overcoat, watertight ground or coating airtightly are built in part or all magnet of the 2nd joint.
In the environment of water, when magnet contacts with water, produce corrosion, magnetic can change.In order to prevent this point, coat the magnetic joint surface with overcoat, inboard at the overcoat that coats medial/lateral magnetic joint surface, the magnet that is coated by overcoat is set again, like this, just in case when coating the overcoat breakage of medial/lateral magnetic joint surface, can prevent that also magnet from contacting with water, can guarantee the viability of magnet.Thereby improve the reliability of magnetic joint.
In addition, when this torque transmitter is used for control rod drive, the 1st joint component of torque transmitter is set in inside, diskware next door, the 2nd joint component at diskware next door outer setting torque transmitter, and, under the state that the magnet that is being coated by the 3rd overcoat in above-mentioned the 1st joint plays a role, the magnet that is being coated by the 3rd overcoat of the 1st joint component does not play a role, make above-mentioned torque transmitter have the maximum delivered moment of torsion more than the control rod position maintenance required torque when nuclear reactor turns round usually.Like this, can realize adopting the control rod drive mechanisms (CRD) magnetic joint, that reliability is high.
The accompanying drawing simple declaration
Fig. 1 is the figure of explanation the present invention the 1st embodiment, be roughly represent control rod drive one embodiment of the present invention, along the sectional drawing of axis direction.
Fig. 2 (a) and Fig. 2 (b) are the figure of the structure of explanation magnetic joint shown in Figure 1.
Fig. 3 is the figure of explanation the present invention the 2nd embodiment, is the inspection method of explanation magnetic joint and the skeleton diagram of testing fixture.
Fig. 4 is the curve map of one of the torque characteristics of explanation magnetic joint example.
Fig. 5 is the figure of explanation the present invention the 3rd embodiment, is the skeleton diagram of expression diskware test unit.
Fig. 6 is the figure of explanation the present invention the 4th embodiment, is the skeleton diagram of expression diskware testing fixture.
Fig. 7 be roughly represent before control rod drive, along the sectional drawing of axis direction.
Embodiment
Below, with reference to the description of drawings embodiments of the invention.
The 1st embodiment
Explanation the 1st embodiment sees figures.1.and.2 earlier.Among Fig. 1, the infrastructure of the control rod drive mechanisms (CRD) of pattern ground expression the 1st embodiment, be the structure of diskware portion and motor combination portion.In addition, the structure on diskware 14 tops with shown in Figure 7 of the prior art identical, for the parts that constitute this part, is annotated with the mark identical with Fig. 7, and its repeat specification is omitted.About infrastructure similarly, with identical among Fig. 7 or similar parts, annotate with the mark identical with Fig. 7, its repeat specification is omitted.
Below, the structure of the control rod drive mechanisms (CRD) of present embodiment is described.
Control rod drive mechanisms (CRD) shown in Figure 1 has magnetic joint, separation detection magnet 25, driving shaft 3 etc.The magnetic joint is made of inboard magnetic joint component 31 that is separated by the next door of diskware 14 and outside magnetic joint component 32.
In the superstructure of control rod drive mechanisms (CRD), be provided with the screw axis 4 and nut 5, hollow piston 9, scram inspecting ferromagnet 28, the full insertion that constitute the ball screw mechanism and detect magnet 29 etc.,
Be provided with the motor unit zoarium in the bottom of diskware 14, the turning axle 1 of the fit side of the outside magnetic joint component 32 of diskware 14 sides and motor unit, by shaft coupling 2 combinations.
The motor unit zoarium is by keeping using detent 34 attached induction motoies 35 to constitute with detent 19, position detecting device (sync bit resolver) 20, variable-speed motor 33, braking.Keep with detent 19 and braking detent 34, the control rod position when common keeps required moment of torsion as nuclear reactor for maintenance moment of torsion when both have above static of 0.3kgfm (this value can be converted by the axle of screw axis 4 and obtains) respectively individually, this static maintenance moment of torsion.
Like this, to keep with detent 19 and braking with detent 34 both, keep moment of torsion when static, the control rod position keeps required moment of torsion when being set at common running, like this, just in case the forfeiture of a side braking function, also the control rod drive mechanisms (CRD) that reliability is high can be realized in the rod of retentive control effectively position.
Between the next door of outside magnetic joint component 32 and diskware 14,, be respectively equipped with thermometer 36,37 in the winding portion of induction motor 35.Thermometer 36 also can be configured near the outer peripheral face of outside magnetic joint component 32.Thermometer 37 also can be configured near the position of winding portion of induction motor 35 or the appropriate location in the housing.
In the outside of diskware 14, be provided with separation detection gauge head 27 and scram position probing gauge head 30, these gauge heads 27,30 have the reed switch by the magnetic force start respectively.
The reed switch of scram position probing gauge head 30 (figure do not show) is equipped with several at above-below direction, to the total travel of control rod, can detect 0,10,40,60,100% position of (the 0%th, full withdrawing state the 100%th, inserts state entirely).Separation detection gauge head 27 has the reed switch 39 of separation detection reed switch 38 and magnetic joint imbalance detection usefulness.Reed switch 38 is used to detect the position of separation detection magnet 25.Reed switch 39 is used to detect near the magnetic field state of magnetic joint.
Connecting electric electromechanics source apparatus 41 on the induction motor 35.The power of fixed frequency 44 that is connecting 60HZ on the electric electromechanics source apparatus 41.In addition, the variable frequency power supply 45 different with power of fixed frequency 44 can be set also, power of fixed frequency 44 and variable frequency power supply 45, can selecting wherein, the either party is connected with electric electromechanics source apparatus 41.Variable frequency power supply 45 can be the pattern that changes frequency steppingly, also can be the pattern that changes frequency continuously.
The synchronous rotation number of induction motor 35 is directly proportional with supply frequency, and in addition, its rotation number is also according to load change.Motor power in the present embodiment can be selected some frequencies, can be according to the utilization of situation dirigibility ground.That is, when nuclear reactor turns round, drive with middling speed, when nuclear reactor stops, in order to shorten driving time, use high-speed driving, the control rod of implementing during equipment inspection when nuclear reactor stops rubs in the determination test, uses driven at low speed.
Especially when control rod friction determination test, make control rod with driven at low speed to full insertion state,, can detect the load change of friction etc. by measuring actuating speed from full withdrawing state.In control rod friction determination test etc., during with driven at low speed, can detect load change between short-term etc. clearly, be the high test of reliability.Certainly, same when turning round with nuclear reactor, drive the occasion of the load change can confirm between short-term etc. in middling speed no problemly, also can drive and implement control rod friction determination test with middling speed.
In addition, when the load change of induction motor 35 time because the electrical energy of supplying with to induction motor 35 changes, so, galvanometer, voltmeter or kilowatt meter etc. are set on supply unit 41,, also can implement control rod friction determination test by confirming the detected value of these galvanometer etc.
In the present embodiment, be power of fixed frequency 44 and the variable frequency power supply 45 that 60HZ is set respectively, so, in the nuclear reactor running, can be connected with power of fixed frequency 44, in nuclear reactor stops, being connected with variable frequency power supply 45 as required, like this, can get rid of in nuclear reactor running and be connected, can realize the utilization of high reliability with the power supply of mistake.
In the present embodiment, can select some kinds of frequencies, but also can select some kinds of different voltages mutually, change actuating speed ground and drive.At this moment, do not adopt power of fixed frequency 44 and variable frequency power supply 45, but adopt fixed-voltage power supply 44 and variable voltage power supply 45.
As shown in Figure 1, electric electromechanics source apparatus 41 has 2 switches 40,40 that are connected in series.Each switch 40 by the signal of sending here by the command signal bang path of mutual different system from control device 42, can be distinguished control independently.On electric electromechanics source apparatus 41, set up as the heat of protective relay and imitate relay 43.When the load torque of induction motor 35 increased, the driving current value of supplying with induction motor 35 increased, and made heat imitate relay 43 actions.In addition, it is that heat is imitated relay 43 that protective relay does not limit, and also can adopt other protective relay.
Keeping with on the detent 19, also connecting and keeping using detent supply unit 46.On supply unit 46, connecting the power of fixed frequency that figure does not show.Keep also having 2 switches 47,47 that are connected in series with detent supply unit 46.Each switch 47 also by the signal of sending here by the command signal bang path of mutual different system from control device 42, can be distinguished independent control.
Like this,, 2 switches 40,47 of series connection are set respectively, can prevent the mistake drive actions of the control rod that causes because of single failure etc., improve reliability at electric electromechanics source apparatus 41 with on keeping with detent supply unit 46.
Above-mentioned switch 40,47 can be a contact switch, also can be semiconductor switch.
Below, describe the structure of magnetic connector portions in detail with reference to Fig. 2.Constitute the inboard magnetic joint component 31 of magnetic joint, built-in the magnet 50,51 of 8 utmost points.The outside magnetic joint component 32 that constitutes the magnetic joint similarly, built-in 8 utmost point magnet 48,49. Magnet 48,49,50,51 has support 53,54,55,56 respectively, and these supports 53,54,55,56 are made of the magnetic that constitutes magnetic loop 52.
The inside surface of the magnet 48,49 of outside magnetic joint component 32 is covered airtight by sleeve 57.The outside surface of the magnet 50,51 of inboard magnetic joint component 31 is covered airtight by sleeve 58.Inboard and outside magnetic joint component 31,32, and magnetically combination by the magnetic force of each magnet 48,49,50,51.Therefore, by the next door of diskware 14, transferring power between inboard and outside magnetic joint component 31,32 non-contactly.
Shown in Fig. 2 (a), the magnet that is marked with mark A 48 (hereinafter referred to as " magnet A ") of outside magnetic joint component 32, littler than the magnet 49 that is marked with mark B (hereinafter referred to as " magnet B "), in addition, the magnet that is marked with mark C 50 (hereinafter referred to as " magnet C ") of inboard magnetic joint component 31, (hereinafter referred to as " magnet D ") is little than the magnet 51 that is marked with mark D.
In addition, with the magnet A of outside magnetic joint component 32 support that join, that be marked with mark A (hereinafter referred to as " support A "), (hereinafter referred to as " support B ") is little than the support that is marked with mark B.In addition, with the magnet C support that join, that be marked with mark C (hereinafter referred to as " support C ") of inboard magnetic joint component 31, (hereinafter referred to as " support D ") is little than the support that is marked with mark D.But also can support A and support B is integrally formed, support C and support D is integrally formed.
Shown in Fig. 2 (b), little magnet is magnet A and magnet C, is being coated by overcoat 59 respectively, and spacer 60 is arranged at an upper portion thereof.Among Fig. 2 (b), only represented magnet C and structure on every side thereof, magnet A and structure on every side thereof, except support be positioned at magnet outer circumferential side this point and, all the other identical with magnet C and structure on every side thereof (seeing Fig. 2 (a)).
Shown in Fig. 2 (a), magnet A, C, support A, C respectively are provided with 2, are configured in point-symmetric position with respect to axis, and magnet A and magnet C are disposing mutually opposite to each other.
This magnetic joint, do not rely on the function of magnet B, D, only by the magnetic attraction that between magnet A, C, moves, guarantee the above maximum delivered moment of torsion of 0.3kgfm (this value can be converted by the axle of screw axis 4 and obtain), this maximum delivered moment of torsion, the control rod position when turning round usually as nuclear reactor keeps required moment of torsion.In addition; as previously mentioned; not only use sleeve 57; 58 cover the surface of the magnet that constitutes the magnetic joint; and coat 2 utmost point magnet 48 (magnet A) respectively with overcoat 59; magnet 50 (magnet C); do not rely on magnet 49 (magnet B); magnet 51 (magnet D) functionally; control rod position in the time of can bringing into play common running keeps moment of torsion; just in case sleeve 57; 58 breakages; water etc. are invaded magnetic joint inside and magnet 49 (magnet B); magnet 51 (magnet D) gets rusty and during loss of function; the magnet of being protected securely 48 (magnet A); the function of magnet 50 (magnet C) is not lost yet; so the position that can carry out control rod effectively keeps.Therefore, can realize the control rod drive mechanisms (CRD) that reliability is high.
In addition, just in case during the imbalance of this magnetic joint, available following method (1)～(2) detect.
(1) the 1st method is described earlier.This magnetic joint, just often, 31,32 of medial/lateral magnetic joint components, small-sized magnet A and small-sized magnet C are in opposite directions.But when the magnetic joint was lacked of proper care, big magnet D, B was mutually opposed with small magnet A, C respectively.In addition, small-sized yoke A, C and pony support A, C join, can not be small-sized magnet A, C and big magnet D, B the magnetic line of force 52 in opposite directions the time be enclosed in the support, the magnetic line of force is released to around the magnetic joint, surrounding magnetic field changes.Detect with reed switch 39 with the magnetic joint imbalance that is located in the separation detection gauge head 27, detect the variation of this magnetic field state, can detect the imbalance of magnetic joint like this.In the present embodiment, be that the small-sized group of magnets of a part is gone into magnetic joint inside, but the group of magnets that magnetic (for example magnetic flux density) is different is fashionable, also can obtain same effect.
(2) the 2nd method is described.During the imbalance of magnetic joint, since 31,32 of medial/lateral magnetic joint components in conjunction with phase change, so, the scram position probing gauge head 30 of output and the detection position information of the position detecting device 20 of detection position information (this pick-up unit 20 is detection position information from the axle (turning axle 1) that is connected with outside magnetic joint component 32) (this gauge head 30 from hollow piston 9 that inboard magnetic joint component 31 is connected detection position information) the relation of output, with just often different.
Therefore, the output of position detecting device 20 and the output of scram position probing detection gauge head 30 are compared, see the predetermined relation of whether setting up between the two, can confirm whether the magnetic joint lacks of proper care.
When having detected the imbalance of magnetic joint with top method, control device 42 stops motor 35 supply capabilities, the driving of control rod is stopped, and the result who the output of the output of position detecting device 20 and scram position probing gauge head 30 has been broken away from predetermined relationship shows, or give the alarm etc.As disposal thereafter, can take measures such as isolation, make not drive controlling rod etc. of this control rod drive mechanisms (CRD), can realize the control rod drive mechanisms (CRD) of high reliability.
The following describes the effect of control device 42.Control device 42 has following function.
(1) control device 42, according to running person's operation, send control rod driving/halt instruction.At this moment, the supply unit 41,46 of controlled device 42 controls begins or stops to supply with the electric power of detent 19 with detent 34, maintenance to induction motor 35, braking.
When (2) control rod drove beginning, control device 42 is control supply unit 46 earlier, will keep open with detent 19 earlier.Then, control device 42 control supply units 41 are switched on detent 34 and induction motor 35 to braking simultaneously.In addition, when braking is energized with detent 34, stops to keep moving and become open state.Like this, turning axle 1 begins rotation.
When (3) stopping the driving of control rod, control device 42 is control supply unit 41 earlier, stops simultaneously earlier the energising of braking with detent 34 and induction motor 35.In addition, braking implements to keep action with detent 34 when non-energising.After the rotation of turning axle 1 stops, control device 42 control supply units 46 will keep becoming hold mode with detent 19.
Like this, will keep with detent 19 and brake, can lower the slip abrasion of maintenance, prolong the serviceable life that detent 19 is used in maintenance, improve reliability with detent 19 with staggering the actuation time of detent 34.
(4) when control rod drives, stop the front of target location in arrival, during for example apart from target location 4mm, control device 42 can send and drive the such control of halt instruction.That is, consider and send electric delay or braking with the ability of detent 35 etc., send the control rod halt instruction from control device 42 after, control rod enters 2mm again to be stopped when above.For this reason, before stopping the 4mm of target location, send halt instruction, can improve the precision of stop position.In addition, control device 42 is grasped the position of control rod according to the signal of sending here from position detecting device 20, but also monitors according to the signal from separation detection gauge head 27 and scram position probing gauge head 30.
(5) in addition, control device 42 (a) by monitoring the signal of delivering to control device 42 from thermometer 37, monitors the winding portion temperature of induction motor 35.(b) by monitoring the signal of delivering to control device 42 from thermometer 36, monitor magnetic connector portions temperature.(c) by monitoring the signal of sending here from position detecting device 20, monitor the control rod actuating speed.The control rod actuating speed is to position detecting device 20 detected control rod positions, carries out time diffusion and calculates, or calculate from the variable quantity of unit interval of control rod position.
When these values surpassed the 1st predetermined value, the alarm generator that does not show from figure gave the alarm to the operator.In addition, when surpassing the 1st predetermined value, also can not adopt alarm, but will represent that this result's information shows with appropriate display mechanism, informs the operator.Perhaps except adopting alarm, also add the demonstration of indication mechanism.
In addition, above-mentioned value and the 1st predetermined value relatively, when the 2nd predetermined value that surpassed more near critical value, control device 42 sends the driving halt instruction of control rod.
In the top explanation, set the 1st predetermined value and the 2nd predetermined value, when having surpassed each predetermined value, the disposal that control device 42 is scheduled to.But be not limited thereto, also can be to the winding portion of induction motor 35
Temperature, magnetic connector portions temperature, control rod actuating speed, the allowable value of setting preset range when each parameter worked the preset range of allowing, with similarly above-mentioned, stops motor, gives the alarm.
(6) control device 42 gives the alarm when heat effect relay 43 has moved, and sends control rod again and drives the instruction that stops.Like this, not only can promptly carry out the abnormality detection of control rod, and can prevent that excessive load from acting on the magnetic joint, can prevent the imbalance of magnetic joint.
In addition, heat also can be set imitate relay 43, but galvanometer, voltmeter or kilowatt meter are set on supply unit 41, by monitoring the signal of delivering to control device 42 from this galvanometer etc., monitor the current value (also can be magnitude of voltage, power value) of supplying with induction motor 35, when its value had surpassed the 1st predetermined value, the alarm generator that does not show with figure gave the alarm to the operator.In addition, when having surpassed the 1st predetermined value, can not give the alarm yet, but will represent that this result's information shows with appropriate display mechanism, informs the operator.Perhaps except adopting alarm, also add the demonstration of indication mechanism.In addition, above-mentioned value and the 1st predetermined value relatively, when the 2nd predetermined value that surpassed more near critical value, control device 42 sends the driving halt instruction of control rod.
(7) control device 42, physical location after the driving of control rod stopped, compare in control rod position when taking place with target stop position or driving halt instruction, when actual stop position and target stop position or the control rod position when driving halt instruction and taking place poor, when having broken away from preset range, the above-mentioned result who has broken away from preset range is not shown that with figure display device shows, perhaps the alarm generator that does not show with figure gives the alarm to the operator.
Perhaps, control device 42, stop position after the driving of control rod stopped, compare with the initial position before the driving of control rod begins, when the difference of stop position and initial position has broken away from predetermined scope, the above-mentioned result who has broken away from preset range is not shown that with figure display device shows, perhaps gives the alarm to the operator with alarm generator.
(8) control device 42, output with position detecting device 20, compare with the output of scram position probing gauge head 30, in all-in position, the control rod full withdrawing position or other position of control rod, when both relations have broken away from concerning of being scheduled to, give the alarm, send control rod again and drive halt instruction.
(9) control device 42, when the imbalance of magnetic joint detects with reed switch 39 actions, give the alarm, and send the driving halt instruction of control rod.
(10) control device 42, when heat is imitated the actuating of relay, give the alarm, and stop the motor supply capability.
(11) control device 42 can be carried out such drive pattern: when control rod inserts operation, earlier control rod is inserted into above the target stop position, then, automatically the control rod withdrawing is arrived the target stop position.
As mentioned above, the various controls by control device 42 is carried out guarantee the correctness that control rod drives, and in addition, can give the alarm and stop the driving of control rod according to the state of control rod drive mechanisms (CRD), improve the reliability of control rod drive mechanisms (CRD).
The 2nd embodiment
Below with reference to Fig. 3 the 2nd embodiment is described.The 2nd embodiment is the magnetic joint to a part that constitutes control rod drive mechanisms (CRD), the method and apparatus of checking.
Fig. 3 represents to have unloaded from control rod drive mechanisms (CRD) shown in Figure 1 the state of motor unit zoarium.At this moment, scram position probing gauge head 30, separation detection gauge head 27 etc. also are removed.
In the present embodiment, as shown in Figure 3, outside magnetic joint component 32, with the extremely corresponding position of each magnet of its underpart, have peristome 61, between outside magnetic joint component 32 and diskware 14 wall parts, can insert Magnetic Sensor 62.
The following describes the 1st inspection method of magnetic joint.Be ready to the 1st test unit earlier, the 1st test unit has Magnetic Sensor 62, the cable 63 that is being connected with Magnetic Sensor 62 and recording gauge 64.During regular inspections of equipment when nuclear reactor stops, unloaded the motor unit zoarium after, Magnetic Sensor 62 is inserted between above-mentioned outside magnetic joint components 32 and diskware 14 wall parts.
As previously mentioned, the magnetic joint produces and transmits moment of torsion by the interaction of the magnetic of 31,32 of medial/lateral magnetic joint components.Therefore, by measuring the magnetic (for example magnetic field intensity) of 31,32 of medial/lateral magnetic joint components, just can confirm to transmit the deterioration tendency of moment of torsion etc.
In addition, also can measure magnetic without Magnetic Sensor 62, but between outside magnetic joint 32 and diskware 14 wall parts or at the position of the magnetic leakage field intensity in diskware 14 outsides, coil etc. is set, make the rotation of magnetic joint, mensuration can be confirmed the transmission moment of torsion of magnetic joint similarly at this moment along with the electric power that induces of field variation generation.
In addition, when implementing this inspection, Magnetic Sensor 62, cable 63 and recording gauge 64 are installed, when nuclear reactor turns round, they are unloaded.Certainly, also Magnetic Sensor 62, cable 63 and recording gauge 64 can connected always, monitor the state of magnetic joint.If interim the connection then often do not monitor required cable wiring, control device etc.In addition, in equipment operation, with the 1st test unit outside accepting container, take care of, when checking, also can reduce when checking operation by radiation.In addition, in equipment operation, Magnetic Sensor 62 grades are taken care of outside accepting container, can relax the radioactive ray radiation parameter of Magnetic Sensor 62 grades etc., also effective to the protection machine.
The following describes the 2nd inspection method of magnetic joint.When implementing the 2nd inspection method, adopt the 2nd test unit.The 2nd test unit is made of the axle 69 of the arm 68 that rotates in conjunction with torquer 65, torque limiter 66, rotation angle analyzer 67 and hand.
When implementing the 2nd inspection method,, the axle 69 of the 2nd test unit is combined on the shaft coupling 2 of diskware 14 bottoms earlier at the state that has unloaded the motor unit zoarium.
Then, make nut 5 positions become the lower limit state (" background of invention " paragraph is seen in the definition of " machinery lower limit state ") of machinery, connect the 2nd test unit.At this state, arm 68 is applied towards the power of control rod withdrawing direction footpath.But at this moment nut 5 is the lower limit state of machinery, can not carry out withdrawing again, so inboard magnetic joint component 31 can not rotate towards the withdrawing direction.
Therefore, outside magnetic joint component 32 according to the size of the moment of torsion that is applied in, with respect to inboard magnetic joint component 31 rotations, produces phase differential between the two,
In the magnetic joint with 8 utmost point magnet shown in Figure 2, as shown in Figure 4, be 22.5 when spending, produce the maximum delivered moment of torsion at phase differential.So, when being applied to moment of torsion on the arm 68 and increasing gradually, near about 22.5 degree torsion angles, produce the maximum delivered moment of torsion.If arm 68 continues rotation again, then moment of torsion reduces, magnetic joint imbalance simultaneously.
Utilize this characteristic, can confirm that with following method the transmission moment of torsion of magnetic joint is whether more than predetermined specification value.
(1) arm 68 is applied moment of torsion, confirm peak torque with torquer 65.At this moment, preferably the detected value of rotation angle analyzer 67 is noted with the detected value of torquer 65 relatedly, can be grasped the relation of the rotation angle-torque of magnetic joint.In addition, when adopting this method, torque limiter 66 is optional, still, considers from the viewpoint that prevents the imbalance of magnetic joint inspection, preferably adopts torque limiter 66.
(2) the moment of torsion of torque limiter 66 restrictions, be set at predetermined specification value.Then, arm 68 is applied moment of torsion, the magnetic joint is not lacked of proper care yet when confirming to be applied to the torque limited value always.Torquer 65 and rotation angle analyzer 67 are optional, still, Yi Bian preferably measure with torquer 65 and rotation angle analyzer 67, Yi Bian test.
According to the above-mentioned the 1st and the 2nd test method, will diskware 14 do not unload from control rod drive mechanisms (CRD), just can confirm the transmission moment of torsion of magnetic joint, can reduce workload/operation when making regular check on/by irradiation.
Especially in the 2nd test method, do not measure magnetic, but directly measure moment of torsion,, can measure the transmission moment of torsion more accurately so compare with the 1st inspection method.
As mentioned above,, can set up the effective ways of confirming magnetic joint viability, adopt said method, can realize reliability control rod drive mechanisms (CRD) high, that adopt the magnetic joint according to present embodiment.
In addition, needn't unload the motor unit zoarium, just can implement and above-mentioned same test.This method can be implemented like this: the turning axle 1 that makes the motor unit zoarium runs through housing from braking with the below of detent 34 and stretches out, and above-mentioned the 2nd test unit is connected the front end of the turning axle 1 that stretches out.
The 3rd embodiment
Below with reference to Fig. 5 the 3rd embodiment is described.The 3rd embodiment is diskware and the magnetic joint to a part that constitutes control rod drive mechanisms (CRD), the method and apparatus of checking.
Fig. 5 is illustrated on the diskware test unit of present embodiment, and the state of the diskware 14 that unloads from control rod drive mechanisms (CRD) is set.
First talk about the structure of listed price spare test unit.The diskware test unit has the loam cake 71 of the upper opening of inaccessible diskware 14.On loam cake 71, fixing axle 72 by fixing tool 73, in the lower end of axle 72, be provided with the shaft coupling 70a that can be connected with inboard magnetic joint component 31.On loam cake 71, connecting force (forcing) pump 76 that diskware 14 internal pressurization are used and the pressure gauge 77 of measuring pressure.
Below, the method that adopts above-mentioned diskware test unit, carries out diskware and the inspection of magnetic joint is described.
On control rod drive mechanisms (CRD), unload the fit and diskware 14 of motor unit earlier, mounting is to the pallet 70 of diskware test unit.Then, shaft coupling 70a is combined on the axle of the parts that support separation detection magnet 25.So, owing to axle 72 can not rotate, so the driving shaft 3 that is combined on the inboard magnetic joint component 31 can not rotate.Then, with bolt 74 loam cake 71 is installed on the diskware 14.At this moment, seal with O shape ring 75 between loam cake 71 and the diskware 14.
At this state, owing to driving shaft 3 can not rotate, so even arm 68 is applied moment of torsion, inboard magnetic joint component 31 can not rotate.Therefore, outside magnetic joint component 32 with respect to inboard magnetic joint component 31 rotations, produces phase differential according to the size of the moment of torsion that is applied between the two.Measure transmission moment of torsion at this moment, just can with the 2nd embodiment similarly, the maximum delivered moment of torsion of mensuration magnetic joint.
In addition, by from 76 pairs of diskware 14 internal pressurization of force (forcing) pump, can implement the withstand voltage test of diskware 14.
In addition, as present embodiment with diskware 14 when control rod drive mechanisms (CRD) unloads, also outside magnetic joint component 32 can be fixed, the 2nd testing fixture is connected on the shaft coupling 70a, make inboard magnetic joint component 31 rotations, measure the maximum delivered moment of torsion of magnetic joint.
As mentioned above, when checking diskware 14, diskware 14 is unloaded from control rod drive mechanisms (CRD), with being arranged on the outer enforcement test unit of accepting container, carrying out the moment of torsion of magnetic joint and confirm, like this, compare with the method that illustrates among the 2nd embodiment, can carry out operation easilier, also lower irradiation.
Therefore, when not unloading diskware 14, confirm the moment of torsion of magnetic joint with the method for the 2nd embodiment record.When unloading diskware 14, confirm the moment of torsion of magnetic joint with the method for the 3rd embodiment record.
The 4th embodiment
Below with reference to Fig. 6 the 4th embodiment is described.The 4th embodiment is diskware and the magnetic joint to a part that constitutes control rod, the method and apparatus that decomposes, checks.
Fig. 6 represents diskware 14 is arranged in the control rod drive mechanisms (CRD) testing fixture of present embodiment, implements the state of the decomposition/assembling of diskware 14.
As shown in Figure 6, testing fixture has the tank 78 that can accommodate diskware 14 and magnetic joint.In tank 78, be provided with the platform 79 that is used for mounting diskware 14.
In addition, in tank 78,, laid track 90,91 along the axis direction that is positioned in the diskware 14 on the platform 79.On these tracks 90,91, be provided with the chassis 84,85 that can move along track 90,91. Chassis 84,85 is corresponding with inboard magnetic joint component 31 and outside magnetic joint component 32 respectively.
On chassis 84, rotatable axle 83 is installed, axle 83 is positioned on the same line with the axis that is positioned in the diskware 14 on the platform 79.Front end at axle 83 is provided with shaft coupling 81.Shaft coupling 81 can be combined on the axle that combines with inboard magnetic joint component 31.Equally, on chassis 85, rotatable axle 82 is installed, axle 82 is positioned on the same line with the axis that is positioned in the diskware 14 on the platform 79.Front end at axle 82 is provided with shaft coupling 80.Shaft coupling 80 can be combined on the axle that is connected with inboard magnetic joint component 31.
Also be provided with chassis 88,89 on track 90,91, chassis 88,89 can move at the axis direction that is positioned in the diskware 14 on the platform 79 along track 90,91.On chassis 88, be provided with and coat inboard magnetic joint component 31 magnetic overcoat 86 on every side.On chassis 89, be provided with and coat outside magnetic joint component 32 magnetic overcoat 87 on every side.
In tank 78, be provided with ultrasound wave and send out the equipment of shaking 92, can carry out ultrasonic cleaning diskware 14 grades of putting into water-filled tank 78 inside.In addition, in tank 78, be provided with movably magnet 93.This testing fixture also has the flexible pipe 94 of supplying with forced air.
The following describes its effect.Assembled state at inboard magnetic joint component 31 and outside magnetic joint component 32, though the magnetic line of force is enclosed in the magnetic joint by major part, there is not special problem, but at the state that inboard magnetic joint component 31 is separated with outside magnetic joint component 32, the magnetic line of force is dispersed towards periphery, so, machine on every side there is magnetic influence, and is attracted, may produce contact accident etc. by magnetic on every side.
When adopting above-mentioned testing fixture, because the axle of inboard magnetic joint component 31 and outside magnetic joint component 32, be fixed on the state on the axis of diskware 14, can carry out the separating of inboard magnetic joint component 31 and outside magnetic joint component 32, combination, so, can prevent that the magnetic joint from contacting the damage that causes with other machine.
In addition, owing to will envelope around inboard and the outside magnetic joint component 31,32 with the overcoat 86,87 of magnetic, so, can lower peripherad leakage magnetic field, lower the influence of machine on every side.
In addition, move tank 78 in by making the magnet 93 in the tank 78, can reclaim the interior magnetic powder of tank 78 etc., the powder that can deperm etc. are attached on inboard magnetic joint component 31 and the outside magnetic joint component 32.
In the present embodiment, in tank 78, be provided with the magnetic overcoat 86,87 that coats inboard and outside magnetic joint component 31,32, but also can be with around the magnetic overcoat coating diskware 14.In addition, in the inboard and the keeping of outside magnetic joint component 31,32, when transportation, also coat, can lower the magnetic influence of machine on every side with the magnetic overcoat.
In the inboard and when the inspection of outside magnetic joint component 31,32, keeping, transportation, with nonmagnetic material for example nylon etc. coat inboard and outside magnetic joint component 31,32 around, can prevent that the foreign matter of magnetic etc. from adhering to.
When foreign matters such as magnetic powder attached to inboard and outside magnetic joint component 31,32 on the time, perhaps foreign matter when first-class, sprays forced air from flexible pipe 94 towards this machine attached to other machine, can remove magnetic powder or other foreign matter.
Claims (2)
1. a control rod drive is used to make the control rod lifting of nuclear reactor to drive, and it is characterized in that having motor, torque transmitter and driving mechanism,
Above-mentioned torque transmitter has the magnetic joint that comprises the 1st joint component and the 2nd joint component, above-mentioned the 1st joint component built-in some magnet, and be connected with the 1st; Above-mentioned the 2nd joint component built-in some magnet, and be connected with the 2nd; Above-mentioned torque transmitter also has the 1st overcoat and the 2nd overcoat, above-mentioned the 1st overcoat watertight ground or coat whole magnet of the 1st joint component airtightly; Above-mentioned the 2nd overcoat watertight ground or coat whole magnet of the 2nd joint component airtightly; In addition, also have either party at least in the 3rd overcoat and the 4th overcoat; The above-mentioned the 3rd outer inboard that is enclosed within above-mentioned the 1st overcoat, watertight ground or coating airtightly are built in part or all magnet of above-mentioned the 1st joint component; The above-mentioned the 4th outer inboard that is enclosed within above-mentioned the 2nd overcoat, watertight ground or coating airtightly are built in part or all magnet of above-mentioned the 2nd joint component;
Above-mentioned driving mechanism passes to control rod with the driving force that above-mentioned motor produces by above-mentioned torque transmitter, makes the control rod lifting.
2. control rod drive is used to make the control rod lifting of nuclear reactor to drive, and it is characterized in that having motor, torque transmitter and driving mechanism,
Above-mentioned torque transmitter has the magnetic joint that comprises the 1st joint component and the 2nd joint component, above-mentioned the 1st joint component built-in some magnet, and be connected with the 1st; Above-mentioned the 2nd joint component built-in some magnet, and be connected with the 2nd; Above-mentioned torque transmitter also has the 1st overcoat and the 2nd overcoat, above-mentioned the 1st overcoat watertight ground or coat whole magnet of the 1st joint component airtightly; Above-mentioned the 2nd overcoat watertight ground or coat whole magnet of the 2nd joint component airtightly; In addition, also have the 3rd overcoat; The above-mentioned the 3rd outer inboard that is enclosed within the 1st overcoat, watertight ground or coating airtightly are built in part or all magnet of the 1st joint component; Above-mentioned driving mechanism passes to control rod with the driving force that motor produces by above-mentioned torque transmitter, makes the control rod lifting;
Above-mentioned the 1st joint component is arranged on inside, diskware next door;
Above-mentioned the 2nd joint component is arranged on outside, diskware next door;
Under the state that the magnet that is coated by the 3rd overcoat in above-mentioned the 1st joint component plays a role, the magnet that is not coated by the 3rd overcoat of above-mentioned the 1st joint component does not play a role, make above-mentioned torque transmitter have the maximum delivered moment of torsion, this maximum delivered moment of torsion is when nuclear reactor turns round usually more than the required torque of retentive control rod position.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP27748999A JP2001099974A (en) | 1999-09-29 | 1999-09-29 | Control rod driving device, its operating method, its testing method and testing device, its inspecting device, its storing method and storing device, and torque transmission device and its testing method |
| JP277489/1999 | 1999-09-29 |
Related Parent Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB00802104XA Division CN100468580C (en) | 1999-09-29 | 2000-09-29 | Device for driving control rod, method and device for treating, and torque-converter transmission |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101110279A CN101110279A (en) | 2008-01-23 |
| CN101110279B true CN101110279B (en) | 2011-08-03 |
Family
ID=17584319
Family Applications (3)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB00802104XA Expired - Fee Related CN100468580C (en) | 1999-09-29 | 2000-09-29 | Device for driving control rod, method and device for treating, and torque-converter transmission |
| CNA2005100067407A Pending CN1645520A (en) | 1999-09-29 | 2000-09-29 | Device for driving control rod, method and device for treating it |
| CN2006101416630A Expired - Fee Related CN101110279B (en) | 1999-09-29 | 2000-09-29 | Device for driving control rod, method and device for testing, and torque-converter transmission |
Family Applications Before (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB00802104XA Expired - Fee Related CN100468580C (en) | 1999-09-29 | 2000-09-29 | Device for driving control rod, method and device for treating, and torque-converter transmission |
| CNA2005100067407A Pending CN1645520A (en) | 1999-09-29 | 2000-09-29 | Device for driving control rod, method and device for treating it |
Country Status (4)
| Country | Link |
|---|---|
| JP (1) | JP2001099974A (en) |
| CN (3) | CN100468580C (en) |
| FI (2) | FI120924B (en) |
| WO (1) | WO2001024197A1 (en) |
Families Citing this family (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6650722B1 (en) * | 2001-12-21 | 2003-11-18 | General Electric Company | Hydraulic control unit transponder card |
| CN101840737B (en) * | 2009-09-02 | 2012-10-31 | 中广核工程有限公司 | Digital rod position control system and method |
| KR101121515B1 (en) | 2010-12-28 | 2012-02-28 | 두산중공업 주식회사 | Friction test gauge for control-rod guide tube |
| JP5807868B2 (en) * | 2011-01-07 | 2015-11-10 | 国立大学法人東京工業大学 | Reactor |
| CN102255339B (en) * | 2011-04-12 | 2013-09-25 | 上海发电设备成套设计研究院 | Quick start method for power-supply system of CRDM (control rod drive mechanism) |
| KR101234550B1 (en) * | 2011-10-13 | 2013-02-19 | 한국원자력연구원 | Apparatus for controlling control absorber rod for nuclear reactor and method thereof |
| US10304575B2 (en) * | 2013-12-26 | 2019-05-28 | Nuscale Power, Llc | Actuating a nuclear reactor safety device |
| CN105004512B (en) * | 2014-04-18 | 2018-10-16 | 中广核研究院有限公司 | Control rod drive mechanism testing stand |
| CN105654678A (en) * | 2016-01-29 | 2016-06-08 | 上海华岭集成电路技术股份有限公司 | Automatic monitoring device for state of test equipment |
| CN110168666B (en) | 2016-12-30 | 2023-11-10 | 纽斯高动力有限责任公司 | control rod damping system |
| CN110253480B (en) * | 2019-06-26 | 2020-12-04 | 中国核动力研究设计院 | Mounting tool for welding seam sealing device of control rod driving mechanism |
| CN111458386B (en) * | 2020-04-07 | 2022-11-18 | 九江学院 | High-pressure photoelectrochemistry in-situ reaction device |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1157988A (en) * | 1995-12-26 | 1997-08-27 | 东芝株式会社 | Control rod drive |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2821082B2 (en) * | 1993-04-13 | 1998-11-05 | 株式会社日立製作所 | Control rod drive system and control rod position deviation monitoring device |
| JPH08136683A (en) * | 1994-11-07 | 1996-05-31 | Hitachi Ltd | Control rod stop controlling system |
| JPH0980182A (en) * | 1995-09-14 | 1997-03-28 | Hitachi Ltd | Reactor control rod controller |
| JPH1010264A (en) * | 1996-06-26 | 1998-01-16 | Toshiba Corp | Control rod drive mechanism |
| JPH11153687A (en) * | 1997-11-25 | 1999-06-08 | Hitachi Ltd | Control rod controller of reactor |
| JP3542260B2 (en) * | 1997-12-15 | 2004-07-14 | 株式会社日立製作所 | Control rod control device |
| JPH11202075A (en) * | 1998-01-19 | 1999-07-30 | Hitachi Ltd | Control rod controller |
-
1999
- 1999-09-29 JP JP27748999A patent/JP2001099974A/en active Pending
-
2000
- 2000-09-29 WO PCT/JP2000/006785 patent/WO2001024197A1/en active Application Filing
- 2000-09-29 CN CNB00802104XA patent/CN100468580C/en not_active Expired - Fee Related
- 2000-09-29 CN CNA2005100067407A patent/CN1645520A/en active Pending
- 2000-09-29 CN CN2006101416630A patent/CN101110279B/en not_active Expired - Fee Related
-
2001
- 2001-05-28 FI FI20011107A patent/FI120924B/en not_active IP Right Cessation
-
2007
- 2007-05-02 FI FI20070349A patent/FI20070349L/en not_active Application Discontinuation
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1157988A (en) * | 1995-12-26 | 1997-08-27 | 东芝株式会社 | Control rod drive |
Non-Patent Citations (4)
| Title |
|---|
| JP特开平10-10264A 1998.01.16 |
| JP特开平11-153687A 1999.06.08 |
| JP特开平11-202075A 1999.07.30 |
| JP特开平8-136683A 1996.05.31 |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1645520A (en) | 2005-07-27 |
| JP2001099974A (en) | 2001-04-13 |
| WO2001024197A1 (en) | 2001-04-05 |
| FI20070349L (en) | 2007-05-02 |
| FI20011107A (en) | 2001-05-28 |
| FI120924B (en) | 2010-04-30 |
| CN101110279A (en) | 2008-01-23 |
| CN1322361A (en) | 2001-11-14 |
| CN100468580C (en) | 2009-03-11 |
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