CN109830319A - Flow plug for high temperature gas cooled reactor - Google Patents
Flow plug for high temperature gas cooled reactor Download PDFInfo
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- CN109830319A CN109830319A CN201811467411.6A CN201811467411A CN109830319A CN 109830319 A CN109830319 A CN 109830319A CN 201811467411 A CN201811467411 A CN 201811467411A CN 109830319 A CN109830319 A CN 109830319A
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- turntable
- high temperature
- flow plug
- chamber
- temperature gas
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E30/00—Energy generation of nuclear origin
- Y02E30/30—Nuclear fission reactors
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Abstract
The present invention relates to reactor corollary equipment technical fields, disclose a kind of flow plug for high temperature gas cooled reactor, including shell and rotor assembly；The inside of shell is equipped with chamber, and shell is equipped with the inlet port and outlet port with chamber；Rotor assembly includes shaft and turntable；Shaft is rotatably installed in chamber around its axis, and turntable coaxial arrangement is in shaft, and the curve clearance of the outer peripheral surface of turntable and chamber cooperates；The outer peripheral surface of turntable is equipped with multiple locating slots and at least one is used to accommodate the material receiving cup of material, and material receiving cup is between two adjacent locating slots；Elastic piece is embedded in each locating slot, the outer surface of elastic force block abuts the curved surface of chamber, to prevent gas from circulating between inlet port and outlet port.The flow plug realizes buffering by setting elastic force block, using elastic force, can keep the normal circulation and handling of ball type device, and long-term running reliability is higher, can also realize high-temperature heat expansion compensation and mechanical wear compensation.
Description
Technical field
The present invention relates to reactor corollary equipment technical fields, more particularly to a kind of choked flow for high temperature gas cooled reactor
Device.
Background technique
Pebble bed high temperature reactor has the advantage of not shutdown continuous fuel replacement, and the fuel handling system of fully automatic operation is to protect
Demonstrate,prove the key of pebble bed high temperature reactor on-line continuous operation.The fuel handling system geometric form strong using spheric fuel element
Shape takes two kinds of spheric fuel element mode of movement, realizes circulation, charging and the discharging operations of spheric fuel element, one is
Realize that gravity conveys using the self weight of ball type device, the second is realizing pneumatic conveying using compressed gas.
Chinese invention patent (publication number CN103474113B) discloses bulb bed modular high temperature gas cooled reactor fuel dress
The composition of unloading system and process flow, wherein containing six helium for fuel recycle and spentnuclear fuel discharging under the conditions of double heaps
The compressed air pneumatic conveying circuit of pneumatic conveying circuit and branch and a spentnuclear fuel second lift.Due to fuel recycle
And discharging quantity is big, speed is fast, fuel enters reactor core spentnuclear fuel apparatus for temporary storage in pipeline with continuous discrete ball manifold formula.This
A little pneumatic conveying circuits and branch can not physically be isolated with reactor core completely, and the pressure and temperature in circuit and reactor core are in the presence of poor
It is different.Thus, pneumatic conveying circuit is not only closely bound up with primary Ioops stress level, but also has at the top and bottom of reactor core with reactor core
Flow exchange.To guarantee ball type device pneumatic conveying and entering the stability of heap, it is necessary to before the course of action entrance of starting pneumatic conveying
The choke apparatus of limitation air-flow exchange is set.
Chinese invention patent (publication number CN103778982B) discloses a kind of flow plug for high temperature gas cooled reactor, the resistance
The rotor of stream device is provided with a deep hole and receives cup, can accommodate two ball type devices and a certain amount of clast and dust, and
Arc air channel and venthole are provided on rotor.Although the flow plug has the function for preventing air-flow and buffering ball type device whereabouts
Can, but form cooperates the rotor counterbore of the rotor of the flow plug and cabinet with slight play, and one ball type device of every conveying is equal
Need to rotate it is primary, high temperature, hot, ball type device fall vibration, operate in a high frequency and the harsh feelings such as bearing clearance variation
Under condition, after operating for a long time, rotor and cabinet cooperation and fretting wear aggravate, and fit clearance increases, and eccentric fortune can occur
Turn, causes resistance flowing effect to weaken, to influence the circulation and handling of normal pneumatic conveying and ball type device.
Summary of the invention
(1) technical problems to be solved
The resistance good, with mechanical compensation ability for high temperature gas cooled reactor that the object of the present invention is to provide a kind of resistance flowing effects
Device is flowed, to solve the problems, such as existing flow plug poor seismic behavior and eccentric operating.
(2) technical solution
In order to solve the above technical problems, the present invention provides a kind of flow plug for high temperature gas cooled reactor, including shell and turn
Sub-component；The inside of the shell is equipped with chamber, and the shell is equipped with the inlet port and outlet port with the chamber；Institute
Stating rotor assembly includes shaft and turntable；The shaft is rotatably installed in the chamber around its axis, and the turntable is same
Axis is set in the shaft, and the curve clearance of the outer peripheral surface of the turntable and the chamber cooperates；The periphery of the turntable
Face is equipped with multiple locating slots and at least one is used to accommodate the material receiving cup of material, and it is described fixed that the material receiving cup is located at adjacent two
Between the slot of position；Elastic piece is embedded in each locating slot, the outer surface of the elastic force block abuts the curved surface of the chamber,
To prevent gas from circulating between the feed inlet and the discharge port.
Wherein, multiple locating slots are angularly uniformly distributed on the outer peripheral surface of the turntable.
Wherein, the elastic force block includes magnetic mutually exclusive internal magnetic pole and outer magnetic pole, and it is described fixed that the internal magnetic pole is set to
The slot bottom of position slot, one end of the outer magnetic pole is opposite with the internal magnetic pole, and the other end of the outer magnetic pole abuts the chamber
Curved surface.
Wherein, the flow plug further includes inner bushing ring, and the outer surface of the inner bushing ring and the surface blending of the chamber are matched
It closes, the outer peripheral surface clearance fit of the inner surface of the inner bushing ring and the turntable；The inner bushing ring corresponds to the feed inlet
Position is provided with feed opening, and the position that the inner bushing ring corresponds to the discharge port is provided with discharge hole.
Wherein, the axis of the axis of the feed inlet and the discharge port is overlapped, and is intersected with the axis of the turntable；Phase
Circular arc between adjacent two locating slots pair central angle be less than or equal to 180 degree.
Wherein, the quantity of the material receiving cup is two, the circular arc between two material receiving cups pair central angle be equal to
180 degree, the turntable are equipped with limiting slot, and the limited post with limiting slot cooperation is provided on the shell.
Wherein, the flow plug further includes Power Component and magnetic driver；The magnetic driver includes from the inside to the outside
Interior magnetic assembly, isolation cover, outer magnetic assembly and the bracket set gradually, the outer magnetic assembly and the interior magnetic assembly form magnetic force coupling
Close connection；The interior magnetic assembly connects the shaft, and the bracket is connect with the shell, by the isolation cover and the shell
Body pressing is close；The Power Component connects the outer magnetic assembly, to drive the outer magnetic assembly to rotate.
Wherein, the flow plug further includes the angle feed-back sensor being set on the magnetic driver.
Wherein, the Power Component includes motor, and the motor passes sequentially through described in speed reducer connects with metal shaft coupling
Outer magnetic assembly.
Wherein, housing is socketed on the outside of the bracket, the Power Component is set to the inside of the housing.
(3) beneficial effect
Compared with prior art, the invention has the following advantages that
A kind of flow plug for high temperature gas cooled reactor provided by the invention, using between turntable and the inner wall of housing cavity
Clearance fit, while setting multiple groups elastic force block abuts the inner wall of housing cavity on turntable, to form choked flow mating surface.In elastic force
Under the action of, which can not only bear and offset the impact force that ball type device high speed falls, but also occur in turntable
When eccentric operating and bearing clearance change, good dynamic impaction state can be kept constantly, have metastable choked flow close
Effect is sealed, to keep the circulation and handling of normal pneumatic conveying and ball type device, long-term running reliability is higher.Meanwhile
Elastic force block also has good compensation function, can both eliminate machining error and rigging error, is easily installed and repairs, also
High-temperature heat expansion compensation and mechanical wear compensation may be implemented, can make in harsh high temperature, high radioactivity, high intensity
With running under environment, the environmental suitability of flow plug is improved.
Detailed description of the invention
Fig. 1 is structure cutting main view of one of the embodiment of the present invention for the flow plug of high temperature gas cooled reactor；
Fig. 2 is cross-sectional view of one of the embodiment of the present invention for the shell of the flow plug of high temperature gas cooled reactor；
Fig. 3 is sectional view along A-A in Fig. 2；
Fig. 4 is choked flow schematic illustration of one of the embodiment of the present invention for the flow plug of high temperature gas cooled reactor；
Fig. 5 is four kind working state schematic representations of one of the embodiment of the present invention for the flow plug of high temperature gas cooled reactor；
Fig. 6 is that isometric of the another kind for the flow plug of high temperature gas cooled reactor in the embodiment of the present invention is shown depending on local cutting
It is intended to；
Fig. 7 is the assembling schematic diagram of the turntable of flow plug and inner bushing ring in Fig. 6；
Fig. 8 is the cross-sectional view of the turntable of flow plug in Fig. 6；
Description of symbols:
100: Power Component；101: motor；102: speed reducer；
103: housing；104: metal shaft coupling；200: magnetic driver；
201: outer magnetic assembly；202: bracket；203: interior magnetic assembly；
204: isolation cover；205: the first fasteners；206: first seal；
207: seam allowance；300: rotor assembly；301: spline；
302: shaft；303: first bearing；304: interior side guard plate；
305: turntable；306: outer side guard plate；307: second bearing；
308: material receiving cup；308-1: the first material receiving cup；308-2: the second material receiving cup；
308-3: third material receiving cup；308-4: the four material receiving cup；309: elastic force block；
309-1: the first elastic force block；309-2: the second elastic force block；309-3: third elastic force block；
309-4: the four elastic force block；310: outer magnetic pole；310-1: the first outer magnetic pole；
310-2: the second outer magnetic pole；310-3: third outer magnetic pole；310-4: the four outer magnetic pole；
311: internal magnetic pole；311-1: the first internal magnetic pole；311-2: the second internal magnetic pole；
311-3: third internal magnetic pole；311-4: the four internal magnetic pole；312: locating slot；
312-1: the first locating slot；312-2: the second locating slot；312-3: third locating slot；
312-4: the four locating slot；313: the outer peripheral surface of turntable；314: the outer surface of elastic force block；
315: limiting slot；400: shell；401: end flanges；
402: the second fasteners；403: second seal；404: chamber；
405: charging adapter tube；406: cavity；407: discharging adapter tube；
408: feed inlet；409: discharge port；410: limit hole；
411: column；500: internal component；501: inner bushing ring；
502: positioning plate；503: bearing block；504: material path；
504-1: feed opening；504-2: discharge hole；505: positioning column；
506: the inner surface of inner bushing ring；507: gap；600: ball type device；
601: the first ball type devices；602: the second ball type devices；603: third ball type device；
604: the four ball type devices.
Specific embodiment
To keep the purposes, technical schemes and advantages of invention clearer, below in conjunction with the drawings and specific embodiments, to hair
Technical solution in bright is explicitly described.Obviously, described embodiment is invention a part of the embodiment, rather than all
Embodiment.Based on the embodiment in invention, those of ordinary skill in the art are obtained without making creative work
The every other embodiment obtained belongs to the range of invention protection.
In the description of the present invention, it should be noted that unless otherwise clearly defined and limited, term " first " " the
Two " " third " " the 4th " " the 5th " " six " etc. are the numbers in order to clearly illustrate product component progress, do not represent any reality
Matter difference." previous " " the latter " is to be based on putting in order and describing."upper" "lower" " left side " " right side " is with side shown in attached drawing
Subject to.For the ordinary skill in the art, it can understand above-mentioned term in the present invention as the case may be
Concrete meaning.
It should be noted that unless otherwise clearly defined and limited, term " connection " shall be understood in a broad sense, for example, can
To be to be fixedly connected, may be a detachable connection, or be integrally connected；It can be directly connected, intermediate matchmaker can also be passed through
Jie is indirectly connected.For the ordinary skill in the art, tool of the above-mentioned term in invention can be understood with concrete condition
Body meaning.
In addition, in the description of the present invention, unless otherwise indicated, " multiple ", " more ", " multiple groups " be meant that two or
It is more than two.
Fig. 1 is structure cutting main view of one of the embodiment of the present invention for the flow plug of high temperature gas cooled reactor, and Fig. 2 is
The internal structure cut away view of one of embodiment of the present invention shell, Fig. 3 are sectional view along A-As in Fig. 2, such as Fig. 1 to Fig. 3 institute
Show, a kind of flow plug for high temperature gas cooled reactor provided in an embodiment of the present invention, including shell 400 and rotor assembly 300.Shell
400 include the end flanges 401 in left side and the cavity 406 on right side, passes through the second fastening between end flanges 401 and cavity 406
Part 402 and second seal 403 are fastenedly connected.Second fastener 402 includes the detachable of multiple groups bolt, nut and washer composition
Connector is conducive to installation, disassembly and maintenance and replaces.Multiple groups removable connector is uniformly distributed along the circumferential direction of end flanges 401, will
End flanges 401 are closely pressed on cavity 406, prevent the leakage of radgas, while in end flanges 401 and cavity
Second seal 403 is set on 406 stitching surface, and using metal O-ring seals, sealing intensity is higher, and effect is more preferable.End face method
Orchid 401 and cavity 406 constitute complete pressure-bearing boundary together.
Cavity 406 is positive eight prism that an inside is equipped with cylindrical bore, and the cylindrical bore and end flanges 401 enclose
At a cylindrical chamber 404.Cavity 406 is equipped with the feed inlet 408 being located above being connected to chamber 404 and is located below
Discharge port 409.Feed inlet 408 is welded with charging adapter tube 405, and discharge port 409 is welded with discharging adapter tube 407, is connect by charging
Pipe 405 and discharging adapter tube 407 are connect with fuel handling system, realize the conveying of ball type device 600.
Rotor assembly 300 includes shaft 302 and turntable 305.Shaft 302 is rotatably supported at chamber 404 around its axis
Interior, turntable 305 is coaxially disposed in shaft 302.In the present embodiment, shaft 302 and turntable 305 are an overall processing part,
Guarantee that shaft 302 can be with the agonic synchronous rotary of turntable 305.In addition to this, turntable 305 can also be socketed on shaft 302
On.As depicted in figs. 1 and 2, shaft 302 is a multi-diameter shaft, the first shaft part to the 6th shaft part is followed successively by from left to right, wherein second
Shaft part is the axis with spline 301, and location and installation has a first bearing 303 on third shaft part, and turntable 305 is located at the 4th shaft part and the
Between five shaft parts, location and installation has second bearing 307 on the 6th shaft part.Shaft 302 passes through first bearing 303 and second bearing
307 are rotatablely connected with chamber 404, and wherein first bearing 303 is installed in bearing block 503, and bearing block 503 is fixed on chamber 404
It is interior；Second bearing 307 is installed in the small counterbore of 404 right end of chamber.
As shown in figure 3, turntable 305 is a disk, the outer peripheral surface 313 of turntable and the curve clearance of chamber 404 cooperate, gap
507 are greater than zero, i.e. internal diameter of the diameter of turntable 305 less than chamber 404.As shown in Fig. 2, in the left side plane installation of turntable 305
Side guard plate 304, right side plan install outer side guard plate 306.Circumferentially arranged with multiple 312 Hes of locating slot on the outer peripheral surface 313 of turntable
At least one is used to accommodate the material receiving cup 308 of material, and material receiving cup 308 is between two adjacent locating slots 312.The present embodiment
In material be mainly spheric fuel element in high temperature gas cooled reactor, thus material receiving cup 308 is that the spherical column in a bottom is heavy
Hole, inner diameter size are adapted with the ball type device 600 conveyed.Ball type device 600 uses graphite for matrix, due to graphite material
The ductility of material is poor, and in multipass reactor core circulation with cargo handling process, ball type device 600 can be touched with pipeline and equipment
It hits and wears, although ball type device 600 has enough intensity in design, still inevitably there is the general of breakage
Rate.
Further, since seen off after ball type device 600 is drawn off out of material receiving cup 308 by rapid pneumatic transporting, under DCS control,
Will not occur two ball type devices 600 in same material receiving cup 308 simultaneously.Therefore, material receiving cup 308 is complete except that can accommodate one
Outside ball type device 600, it is necessary to which there is certain clast and dust carrying capacity.Ball type device 600 in the present embodiment it is straight
Diameter is 60mm, and the diameter of material receiving cup 308 is 65mm.The bottom of a cup of material receiving cup 308 is tapered simultaneously, can contain certain clast and powder
Dirt, therefore the height of material receiving cup 308 is 70mm.
As shown in figure 3, being embedded elastic piece 309 in each locating slot 312, the outer surface 314 of elastic force block abuts chamber
404 curved surface, to prevent gas from circulating between feed inlet 408 and discharge port 409.Elastic force block 309 is limited in installation simultaneously
In in the interior side guard plate 304 and outer side guard plate 306 of turntable 305.Elastic force block 309 is a flexible cube, inner surface
It is bonded the slot bottom of locating slot 312, outer surface is arc surface, is bonded and abuts the curved surface of chamber 404.The thickness of elastic force block 309 is big
It is the outer peripheral surface that elastic force block 309 is higher by turntable 305 in the depth of locating slot 312.Meanwhile 314 width of outer surface of elastic force block
Greater than the diameter of feed inlet 408, and the thickness of equal to or slightly greater than turntable 305, thus feed inlet 408 and discharging can be blocked
Mouth 409 prevents air-flow from entering turntable 305.Moderate compression elasticity is provided by elastic force block 309, elastic force block 309 is pushed and compresses chamber
The inner surface of room 404 forms sealing surface, overcomes air-flow back pressure to prevent air-flow from passing through.In addition, under the effect of elasticity, elastic force block
309 also have compensation function, to eliminate machining error and rigging error, carry out thermal expansion and mechanical wear compensation.
A kind of flow plug for high temperature gas cooled reactor provided in this embodiment, using between turntable and the inner wall of housing cavity
Clearance fit, while on turntable be arranged multiple groups elastic force block abut housing cavity inner wall, to form choked flow mating surface.In bullet
Under the action of power, which can not only bear and offset the impact force that ball type device high speed falls, but also send out in turntable
When raw eccentric operating and bearing clearance change, good dynamic impaction state can be kept constantly, and there is metastable choked flow
Sealing effect, to keep the circulation and handling of normal pneumatic conveying and ball type device, long-term running reliability is higher.Together
When, elastic force block also has good compensation function, can both eliminate machining error and rigging error, is easily installed and ties up
It repairs, can also realize high-temperature heat expansion compensation and mechanical wear compensation, it can be in harsh high temperature, high radioactivity, high-strength
It is run under the use environment of degree, improves the environmental suitability of flow plug.
Further, as shown in figure 3, elastic force block 309 uses the magnetic spring with magnetic mutually exclusive permanent magnetism magnetic pole,
Internal magnetic pole 311 and outer magnetic pole 310 including mutual exclusion, internal magnetic pole 311 be set to locating slot 312 slot bottom, one end of outer magnetic pole 310 with
Internal magnetic pole 311 is opposite, and the other end of outer magnetic pole 310 abuts the curved surface of chamber 404.Due to the effect of repulsive interaction, 311 He of internal magnetic pole
There are certain gaps between outer magnetic pole 310.In a specific embodiment, internal magnetic pole 311 and outer magnetic pole 310 are selected resistance to
The good SmCo rare earth cobalt permanent magnets of mild magnetic property.It can reduce the volume of elastic force block 309 by using magnetic spring, just
In installation.Other than magnetic spring, elastic force block 309 can also provide elastic force using other elastic elements.
Further, as shown in figure 3, the flow plug for high temperature gas cooled reactor in the present embodiment further includes inner bushing ring 501,
The outer surface of inner bushing ring 501 and the surface blending of chamber 404 cooperate, and transition fit herein refers to may thering is gap or mistake
The cooperation being full of is then the mating surface that gap is less than 0.5mm if it is clearance fit.The inner surface 506 of inner bushing ring is outer with turntable
313 clearance fit of circumferential surface.Inner bushing ring 501 includes two layers of ring set, and inside is enhancement layer, and outside is cooperation layer.
Inner bushing ring 501 is equipped with material path 504, so that ball type device 600 can smoothly enter into turntable 305, and is transferred out
It goes.Specifically, the position setting feed opening 504-1 of feed inlet 408 is corresponded on inner bushing ring 501, the position of corresponding discharge port 409 is set
Set discharge hole 504-2.During turntable 305 rotates, elastic force block 309 and inner bushing ring 501 form friction pair, to guarantee
The reliability and service life of friction pair, elastic force block 309 and inner bushing ring 501 are all made of wear-resistant material manufacture, or pass through table
Surface treatment forms wearing face.Once serious wear can repair replacement to inner bushing ring 501 and elastic force block 309.Using interior
Grommet can reduce the abrasion of chamber inner wall, and then can guarantee the use reliably and with long-term of shell, without often replacement.
Further, as shown in Figures 2 and 3, the axis of the axis of feed inlet 408 and discharge port 409 is overlapped, and and turntable
305 axis intersection.I.e. feed inlet 408 and discharge port 409 are coaxially disposed, and by the center of turntable 305.At this point, adjacent two
Circular arc between a locating slot 312 pair central angle be less than or equal to 180 degree, that is to say, that turned over arbitrarily in turntable 305
When position, at least one elastic force block 309 carrys out choked flow between feed inlet 408 and discharge port 409.If the quantity of locating slot 312 is
Two, then the axis of two locating slots 312 need to be on same straight line, and passes through the center of turntable 305, thus either suitable
Hour hands or radian counterclockwise are 180 degree, and the central angle between feed inlet 408 and discharge port 409 is equal.Specifically,
Feed inlet 408, discharge port 409, feed opening 504-1, discharge hole 504-2, charging adapter tube 405 and discharging adapter tube 407 coaxially and
Internal diameter is equal.
Further, as shown in figure 3, multiple locating slots 312 are angularly uniformly distributed on the outer peripheral surface 313 of turntable.It is fixed
The quantity of position slot 312 can be two or more positive integers.With four locating slots 312, four material receiving cups 308 in the present embodiment
For, and locating slot 312 and 308 interlaced arrangement of material receiving cup arrange a material receiving cup 308 between that is, two neighboring locating slot 312,
A locating slot 312 is similarly disposed between two neighboring material receiving cup 308 simultaneously.Specifically, along the inverse time since feed inlet
Needle direction is seen, the first material receiving cup 308-1, the first locating slot 312-1, the second material receiving cup 308-2, the second locating slot have been sequentially arranged
312-2, third material receiving cup 308-3, third locating slot 312-3, the 4th material receiving cup 308-4, the 4th locating slot 312-4.Adjacent
Circular arc between two locating slots 312 and between two neighboring material receiving cup 308 pair central angle be equal to 90 degree, i.e., in circle
All array arrangements.
A magnetic force elastic force block 309 is respectively mounted in each locating slot 312.Specifically, is installed in the first locating slot 312-1
One elastic force block 309-1, the first elastic force block 309-1 includes the first internal magnetic pole 311-1, the first outer magnetic pole 310-1；Second locating slot
It includes the second internal magnetic pole 311-2, the second outer magnetic pole 310- that the second elastic force block 309-2, the second elastic force block 309-2 is installed in 312-2
2；Third elastic force block 309-3 is installed, third elastic force block 309-3 includes third internal magnetic pole 311-3, the in third locating slot 312-3
Three outer magnetic pole 310-3；4th elastic force block 309-4 is installed, the 4th elastic force block 309-4 includes in the 4th in the 4th locating slot 312-4
Magnetic pole 311-4, the 4th outer magnetic pole 310-4.Thus, even if after elastic force block 309 deviates material path 504, due to four elastic force blocks 309
It is arranged in array, 504 two sides of mistake ball at least one bullet when turntable 305 rotates to any position, on inner bushing ring 501
Power block 309 is contacted with inner bushing ring 501, carries out fluid resistant seal to upstream and downstream gas.
Fig. 4 is choked flow schematic illustration of one of the embodiment of the present invention for the flow plug of high temperature gas cooled reactor, such as Fig. 4
Shown, turntable 305 goes to the position of 308 face discharge port 409 of material receiving cup at this time.Air-flow flows from bottom to top, from discharging adapter tube
407 and discharge port 409 enter flow plug, ignore 305 side of turntable minim gap that may be present, air-flow is again via material path
504 enter the gap 507 between inner bushing ring 501 and turntable 305, by the second elastic force block 309-2 in left side and the third on right side
Two frictions that elastic force block 309-3 is formed with inner bushing ring 501 are secondary to be blocked, thus air-flow can be prevented to pass through, and realizes flow plug
Upstream and downstream air-flow block function.
Further, as depicted in figs. 1 and 2, which further includes Power Component 100 and magnetic
Power driver 200.Magnetic driver 200 is tubular magnetic driver of the angle of lag less than 0.2 degree, including from the inside to the outside according to
Interior magnetic assembly 203, isolation cover 204, outer magnetic assembly 201 and the bracket 202 of secondary setting.Wherein, isolation cover 204 uses titanium alloy material
Material is made.Bracket 202 is connect with shell 400, and isolation cover 204 and shell 400 are pressed closely.
Specifically, seam allowance 207 is set on end flanges 401, and isolation cover 204 is limited by seam allowance 207, and coaxial mounted
Bracket 202 is pressed on end flanges 401, and by the first fastener 205 and first seal 206 be detachably connected with
Sealing.Magnetic driver 200 is supported using end flanges 401.Outer magnetic assembly 201 be located at bracket 202 and isolation cover 204 it
Between, and bearing is arranged in the side contacted with isolation cover 204 in outer magnetic assembly 201.Interior magnetic assembly 203 is located at shaft 302 and isolation
Between cover 204, and bearing is arranged in the side contacted with isolation cover 204 in interior magnetic assembly 203.
More specifically, inside the first bearing 303 and second bearing 307 and magnetic driver 200 of rotor assembly 300
Bearing, the alloy bearing of the heat-resistant antifriction with polyimides retainer is all made of, by with radiation resistance and self-lubricating property
Polyimides retainer provides solid lubricant film, and the alloy of heat-resistant antifriction has moulding and toughness better than ceramic bearing, thus
Meet the resistance to mild radiotolerant long-life service requirement of bearing.
In addition, Power Component 100 includes motor 101, motor 101 passes sequentially through speed reducer 102 and metal shaft coupling 104 connects
Outer magnetic assembly 201 is connect, to drive outer magnetic assembly 201 to rotate, while interior magnetic assembly 203 connects shaft 302 by spline 301.Outside
Magnetic assembly 201 receives the rotary motion of the output of Power Component 100, and by magnetic coupling, interior magnetic assembly 203 is driven to rotate, into
And shaft 302 is driven to rotate.
Under the instruction of nuclear power plant's DCS master control system, the speed reducer 102 direct-connected with motor 101 drives outer magnetic assembly 201 same
Step rotation after magnetic field penetration isolation cover 204, drives interior magnetic assembly 203 and turn direct-connected with it under the action of magnetic coupling
Sub-component 300 rotates synchronously, and dynamic sealing is converted static seal by the flexible mechanical transmission under the conditions of realization is contactless, not only real
The sealing for having showed the hot helium of radioactivity also improves the running environment of Power Component 100.In the mistake of flow plug splicing and rotation
Cheng Zhong, the ball type device 600 in the material receiving cup 308 in turntable 305 have very strong radioactivity, and magnetic driver 200 is adopted
Columnar structured with tall and thin compact, outer magnetic assembly 201 and interior magnetic assembly 203 are not only in the longitudinal direction with enough
Shielding thickness, and radially also there is enough shielding thickness, it can protect Power Component 100 from caused by trapping in short-term
Excessive gamma-rays cumulated activity dosage.
Further, which further includes that the angle that is set on magnetic driver 200 is anti-
Infeed sensor device.Under the operating condition that turntable 305 is continuously run, in case of power-off or dependent failure, then need to rotor assembly 300
Again small change point is difficult to obtain rotor assembly 300 outside isolation cover 204 since magnetic driver 200 is flexible coupling to be contactless
Accurate location information.One angle feed-back sensor is set in magnetic driver 200, the problem can be solved.The angle
The basic principle of feedback transducer is magnetic limiter to be arranged in interior magnetic assembly 203, and be arranged in 204 corresponding position of isolation cover
Magnetic probe is based on permanent magnet coupling and Hall effect, the angular transducer is just when magnetic limiter turns to magnetic probe corresponding position
It may detect real-time corner, and adjusted in time to initial corner, to guarantee to receive and convey the stability of ball type device.
Further, motor 101 uses band rotary transformer AC servo motor, what AC servo motor 101 had
Good torque frequency feature and its rotary transformer being equipped with have high-precision resolution ratio, are become by control driver and rotation
Depressor executes corner feedback accurately to control revolving speed and corner.Speed reducer 102 is for providing output torque to guarantee executing agency
Movement is steady, it is ensured that servo-system is wanted with meeting the corner control of frequent start-stop, smooth running and output shaft accurately in place
It asks.
Further, the outside of bracket 202 is socketed with housing 103, and Power Component 100 is placed in housing 103.Shielding
Set 103 is a steel overall processing part, and the positioning of bracket 202 of one end and magnetic driver 200, the other end, which passes through to be supported in, to be set
It takes root in standby steelframe or steel platform, motor 101 and speed reducer 102 are placed in housing 103, spherical in surrounding ball flow tube road to limit
Radial gamma-rays intergal dose of the element 600 to motor 101 and speed reducer 102.Since Power Component 100 is by ball type device
The prompt radiation irradiation of oblique fire in 600 flow process is relatively small, therefore uses the housing 103 of relatively small thickness.
Further, as shown in Fig. 2, the flow plug for high temperature gas cooled reactor in the present embodiment further includes internal component
500, internal component 500 further includes positioning plate 502 other than including the above-mentioned inner bushing ring 501 and bearing block 503 referred to.Positioning
The limit of bearing block 503 is fixed in chamber 404, in turn by the insertion of plate 502 installation to the inner wall of shell 400 by positioning column 505
Play the role of locating turntable 305.
The flow plug in the present embodiment is further illustrated below with reference to the specific course of work.
Fig. 5 is four kind working state schematic representations of one of the embodiment of the present invention for the flow plug of high temperature gas cooled reactor,
A figure in Fig. 5 is flow plug original state, and the b figure in Fig. 5 is state when flow plug turns over 90 degree clockwise, the c in Fig. 5
Figure is state when flow plug turns over 180 degree clockwise, and the d figure in Fig. 5 is state when flow plug turns over 270 degree clockwise.
As shown in figure 5, when the first material receiving cup 308-1 is located on the axis direction of charging adapter tube 405, the first spherical member from upstream
Part 601 is fallen into the first material receiving cup 308-1.Then, turntable 305 rotates clockwise, and drives the rotation of the first ball type device 601.Turn
After crossing 90 degree, the first ball type device 601 goes to right, at this point, the second material receiving cup 308-2 is located at the axis side of charging adapter tube 405
Upwards, the second ball type device 602 from upstream is fallen into the second material receiving cup 308-2.Then, turntable 305 continues to revolve clockwise
Turn, and the first ball type device 601 and the second ball type device 602 is driven to rotate together.After turning over 180 degree, the second ball type device 602
Right is gone to, at this point, third material receiving cup 308-3 is located on the axis direction of charging adapter tube 405, the spherical member of the third from upstream
Part 603 is fallen into third material receiving cup 308-3.The first ball type device 601 goes to lower section simultaneously, and the first material receiving cup 308-1 is located at
Expect that the axis direction of adapter tube 407, the first ball type device 601 fall into discharging adapter tube 407 from the first material receiving cup 308-1, be discharged to
Downstream.Then, turntable 305 continues to rotate clockwise, and the second ball type device 602 and third ball type device 603 is driven to revolve together
Turn.After turning over 270 degree, third ball type device 603 goes to right, at this point, the 4th material receiving cup 308-4 is located at charging adapter tube 405
On axis direction, the 4th ball type device 604 from upstream is fallen into the 4th material receiving cup 308-4.Second ball type device 602 simultaneously
Lower section is gone to, the second material receiving cup 308-2 is located at the axis direction of discharging adapter tube 407, and the second ball type device 602 is from the second material receiving cup
308-2 is fallen into discharging adapter tube 407, is discharged to downstream.At the same time, the first unloaded material receiving cup 308-1 goes to left, turntable
305 rotate clockwise 90 degree again, then the first material receiving cup 308-1 is again positioned on the axis direction of charging adapter tube 405, receive next
A ball type device 600.So in cycles, under the instruction of master control system DCS and electric machine controller, rotor assembly 300 is every
Turn over 90 degree, i.e., in the case where fluid resistant seal, one ball type device 600 of downstream transport.To be evenly arranged in the present embodiment
Four material receiving cups 308 for, therefore corner be 90 degree, the quantity of material receiving cup 308 can according to need flexible choosing in actual use
Match, is not limited to four.The direction of rotation of this outer rotary table 305 can be it is clockwise, perhaps counterclockwise or clockwise and anticlockwise
It is alternately reciprocal.
In addition to the above implementation exceptions, Fig. 6 to Fig. 8 further illustrates the form of another flow plug for high temperature gas cooled reactor.
As shown in Figure 6 to 8, the quantity of material receiving cup 308 is two, and the quantity of locating slot 312 is four.The arrangement side of locating slot 312
Formula is identical as upper one embodiment, and circumferentially array is arranged.Unlike, the first material receiving cup 308-1 is located at the first locating slot
Between 312-1 and the 4th locating slot 312-4, and the second material receiving cup 308-2 is then located at the second locating slot 312-2 and third locating slot
312-3。
Circular arc between two material receiving cups 308 pair central angle be equal to 180 degree, i.e., the axis about turntable 305 is at 180
Spend mirror symmetry arrangement.Circular limiting slot 315 is set on turntable 305, and two columns 411 of setting at 315 both ends of limiting slot make
The angle that limit point must be limited is 180 degree.The limiting slot of semicircular arc can also be set on turntable 305, to realize 180 degree
Limit.The limit hole 410 cooperated with limiting slot 315 is set on shell 400, limited post is installed in limit hole 410.Pass through limit
Column slides limit in limiting slot 315, to limit 305 rotating angle movement range of turntable.Due to being provided with mechanical position limitation, rotor assembly
300 can only be operated in a manner of 180 degree reciprocally swinging, and working efficiency is relatively low, and fretting wear is larger, but structure is simple, is easy to
Automation change.
It can be seen from the above embodiments that, provided by the present invention for the flow plug of high temperature gas cooled reactor, using turntable with
Clearance fit between the inner wall of housing cavity, while setting multiple groups elastic force block abuts the inner wall of housing cavity on turntable, with
Form choked flow mating surface.Under the action of elastic force, which can not only bear and offset what ball type device high speed fell
Impact force, and when eccentric operating occurs for turntable and bearing clearance changes, good dynamic impaction state can be kept constantly,
With metastable fluid resistant seal effect, so that the circulation and handling of normal pneumatic conveying and ball type device are kept, it is long-term to transport
Capable reliability is higher.Meanwhile elastic force block also has good compensation function, can both eliminate machining error and assembly misses
Difference is easily installed and repairs, and can also realize high-temperature heat expansion compensation and mechanical wear compensation, can be in harsh height
It is run under temperature, high radioactivity, the use environment of high intensity, improves the environmental suitability of flow plug.
Finally, it should be noted that the above embodiments are merely illustrative of the technical solutions of the present invention, rather than its limitations；Although
Present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that: it still may be used
To modify the technical solutions described in the foregoing embodiments or equivalent replacement of some of the technical features；
And these are modified or replaceed, technical solution of various embodiments of the present invention that it does not separate the essence of the corresponding technical solution spirit and
Range.
Claims (10)
1. a kind of flow plug for high temperature gas cooled reactor, which is characterized in that including shell and rotor assembly；The inside of the shell
Equipped with chamber, the shell is equipped with the inlet port and outlet port with the chamber；
The rotor assembly includes shaft and turntable；The shaft is rotatably installed in the chamber around its axis, described
Turntable coaxial arrangement is in the shaft, and the curve clearance of the outer peripheral surface of the turntable and the chamber cooperates；The turntable
Outer peripheral surface be equipped with multiple locating slots and at least one is used to accommodate the material receiving cup of material, the material receiving cup is located at adjacent two
Between the locating slot；Elastic piece is embedded in each locating slot, the outer surface of the elastic force block abuts the chamber
Curved surface, to prevent gas from circulating between the feed inlet and the discharge port.
2. the flow plug according to claim 1 for high temperature gas cooled reactor, which is characterized in that multiple locating slot isogonisms
Degree is uniformly distributed on the outer peripheral surface of the turntable.
3. the flow plug according to claim 1 for high temperature gas cooled reactor, which is characterized in that the elastic force block includes magnetism
Mutually exclusive internal magnetic pole and outer magnetic pole, the internal magnetic pole are set to the slot bottom of the locating slot, one end of the outer magnetic pole and institute
State that internal magnetic pole is opposite, the other end of the outer magnetic pole abuts the curved surface of the chamber.
4. the flow plug according to claim 1 for high temperature gas cooled reactor, which is characterized in that it further include inner bushing ring, it is described
The surface blending of the outer surface of inner bushing ring and the chamber cooperates, between the inner surface of the inner bushing ring and the outer peripheral surface of the turntable
Gap cooperation；The position that the inner bushing ring corresponds to the feed inlet is provided with feed opening, and the inner bushing ring corresponds to the discharging
The position of mouth is provided with discharge hole.
5. the flow plug according to claim 1 for high temperature gas cooled reactor, which is characterized in that the axis of the feed inlet and
The axis of the discharge port is overlapped, and is intersected with the axis of the turntable；Circular arc institute between the two neighboring locating slot is right
Central angle be less than or equal to 180 degree.
6. the flow plug according to claim 5 for high temperature gas cooled reactor, which is characterized in that the quantity of the material receiving cup is
Two, circular arc between two material receiving cups pair central angle be equal to 180 degree, the turntable is equipped with limiting slot, described
The limited post with limiting slot cooperation is provided on shell.
7. the flow plug according to any one of claim 1 to 6 for high temperature gas cooled reactor, which is characterized in that further include
Power Component and magnetic driver；
The magnetic driver includes interior magnetic assembly, isolation cover, outer magnetic assembly and the bracket set gradually from the inside to the outside, described outer
Magnetic assembly forms magnetic coupling with the interior magnetic assembly and connect；The interior magnetic assembly connects the shaft, the bracket with it is described
Shell connection presses the isolation cover and the shell close；
The Power Component connects the outer magnetic assembly, to drive the outer magnetic assembly to rotate.
8. the flow plug according to claim 7 for high temperature gas cooled reactor, which is characterized in that further include being set to the magnetic
Angle feed-back sensor on power driver.
9. the flow plug according to claim 7 for high temperature gas cooled reactor, which is characterized in that the Power Component includes electricity
Machine, the motor pass sequentially through speed reducer and connect the outer magnetic assembly with metal shaft coupling.
10. the flow plug according to claim 7 for high temperature gas cooled reactor, which is characterized in that the outer sheath of the bracket
It is connected to housing, the Power Component is set to the inside of the housing.
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| CN201811467411.6A CN109830319B (en) | 2018-12-03 | 2018-12-03 | Flow plug for high-temperature gas cooled reactor |
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| CN201811467411.6A CN109830319B (en) | 2018-12-03 | 2018-12-03 | Flow plug for high-temperature gas cooled reactor |
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| CN109830319B CN109830319B (en) | 2020-09-15 |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN115050498A (en) * | 2022-06-27 | 2022-09-13 | 华能山东石岛湾核电有限公司 | Reciprocating type flow plug of high-temperature gas cooled reactor fuel loading and unloading system |
| CN115083644A (en) * | 2022-06-20 | 2022-09-20 | 华能核能技术研究院有限公司 | High-temperature gas cooled reactor passing ball flow choking device capable of operating in one direction |
| CN115171931A (en) * | 2022-06-24 | 2022-10-11 | 华能山东石岛湾核电有限公司 | Material level controllable ball falling device of high-temperature gas cooled reactor |
| RU2811086C1 (en) * | 2022-08-15 | 2024-01-11 | Циньхуа Юниверсити | Suction device for high temperature gas cooled reactor |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN115274165A (en) | 2022-08-15 | 2022-11-01 | 清华大学 | Flow choking device for high-temperature gas cooled reactor |
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| CN103761999A (en) * | 2014-01-24 | 2014-04-30 | 清华大学 | Crossroad device for high-temperature gas cooled reactor |
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| CN115083644A (en) * | 2022-06-20 | 2022-09-20 | 华能核能技术研究院有限公司 | High-temperature gas cooled reactor passing ball flow choking device capable of operating in one direction |
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| CN115171931A (en) * | 2022-06-24 | 2022-10-11 | 华能山东石岛湾核电有限公司 | Material level controllable ball falling device of high-temperature gas cooled reactor |
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| RU2811086C1 (en) * | 2022-08-15 | 2024-01-11 | Циньхуа Юниверсити | Suction device for high temperature gas cooled reactor |
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