CN207074559U - Vibration prevention system for fluidal texture - Google Patents

Abstract

It the utility model is related to the vibration prevention system for fluidal texture.A kind of equipment has core body, and the core body has the suppression ring for limiting multiple sockets of the configuration around core body.Rotatable internal container structure is movably arranged in above core body.Suppression system extends from internal container structure.Each suppression system has support, the interface board being fixed on support and the rod extension being fixed on interface board.A part for rod extension is configured to be received in respective socket.

Description

Vibration prevention system for fluidal texture

Technical field

Nuclear reaction field is the utility model is related to, more particularly to (earthquake suppresses a kind of vibration prevention system for fluidal texture System).

Background technology

Thailand draw energy traveling wave reactor (TWR) fission facility (its more generally can be described as nuclear fission deflagration wave reactor or Nuclear burning ripple reactor) in, key reaction pile element is the reactor vessel and reactor core body for being filled with Liquid Sodium cooling agent. TWR fission facilities are the through type fast reaction heaps for the subcritical heavily loaded operating fuel bred and burnt by scene.Reactor Core body is immersed in the sodium pond in reactor vessel.It is by depleted uranium/exhausted uranium (U-238) in the center of core body in one kind designs Rod surround some enriched uranium (U-235) rod.U-235 is used as initiator, and quick startup (kick starting) traveling wave is anti- Should --- a kind of slow mobile chain reaction of parallel fission ripple advanced through uranium bar.These parallel waves trigger in the center of core body, So as to slowly consume fuel and generate heat in the core.This operational mode is envisioned for wherein propagation and and then burnt sometimes The reactor that the ripple of fissile material will be advanced relative to fuel.However, the safe TWR fissions facility for drawing the energy is also including so-called " standing wave " designs, wherein be used as the alternative solution for making reaction radially outward be propagated through static rod, reactor core body it is central near The uranium bar that exhausts exchanged with the uranium bar that do not exhaust from reactor core external week.

Sodium cooling agent is used to radiate from core body.Containment surrounds reactor vessel to leak from reactor vessel in contingency In the case of prevent the loss of sodium cooling agent.Pump make main sodium cooling agent reactor core body and the intermediate heat exchanger in the pond it Between circulate.These heat exchangers have the intermediate sodium cooling agent of on-radiation in the opposite side of heat exchanger.Heated centre Sodium cooling agent, which is recycled to, produces steam to drive the steam generator of the turbine of generator.

In theory, TWR facilities of fissioning do not need fuel reprocessing, using depleted uranium or natural uranium as their main fuel, A small amount of enriched uranium is only needed when starting, and nevers need to refuelling again.This core body longevity depends on the first dress of uranium The specification of material and the fuel burn-up rate realized during reactor operation.

Utility model content

On the one hand, technology of the present utility model is related to a kind of vibration prevention system for fluidal texture, the vibration prevention system bag Include：Core body；The suppression ring around core body is configured, the wherein suppression ring limits multiple sockets；It is movably arranged on core body The rotatable internal container structure of side；With the multiple suppression systems extended from internal container structure, plurality of suppression system In each suppression system include：Support；The interface board being fixed on support；With the rod extension being fixed on interface board, its In at least a portion of the rod extension be configured in the respective socket that is received in the multiple socket.In one example, Each rod extension includes bearing and the rod being connected with the bearing, and wherein pedestal configurations are into being fixed on interface board and bar construction Into being received in corresponding socket.In another example, support includes counterfort and the substrate being fixed on counterfort, wherein interface board It is fixed on both counterfort and substrate.In another example, rotatable internal container structure includes bottom surface, plurality of suppression Each suppression system in system extends in subjacent.In yet another example, interface board limits and internal container structure The almost parallel plane of axis.

In another example of above-mentioned aspect, rod extension includes rod, and the rod has big with the axis of internal container structure Cause the mandrel line extended parallel to.In one example, internal container structure can be in the first axial location and the second axial location Between move.In another example, when internal container structure is in the first axial location, rod extension is received in socket, And when internal container structure is in the second axial location, rod extension is not received in socket.

Brief description of the drawings

Below form the application a part accompanying drawing be for described technology it is illustrative and be not intended to Any mode limits the scope for the technology for requiring patent right, and the scope should be based on claim appended herein.

Fig. 1 shows some basic building blocks of TWR fission facilities in form of a block diagram.

Fig. 2 is reactor core body and the fragmentary, perspective view of associated access and controlling organization of TWR fission facilities.

Fig. 3 A and 3B are the close up perspective view for the vibration prevention system of internal container structure.

Embodiment

Fig. 1 shows some basic building blocks of traveling wave reactor (TWR) fission facility 100 in form of a block diagram.In general, TWR fission facilities 100 include the reactor core body 102 for accommodating multiple fuel assembly (not shown).Core body 102, which configures, is keeping one In the pond 104 for determining the Liquid Sodium cooling agent 106 of volume.Pond 104 is referred to as hot pond and with than also accommodating Liquid Sodium cooling agent The high sodium temperature (being attributed to by energy caused by the fuel assembly in reactor core body 102) of 106 surrounding's cold drop 108.Heat Pond 104 is separated by elbows (internal container, redan) 110 with cold drop 108.The top of the ullage of sodium cooling agent 106 Space 112 is filled with the inert protective gas of such as argon gas.Reactor vessel 114 (containment) surrounds reactor core body 102, heat Pond 104 and cold drop 108, and sealed using reactor lid 116.Reactor lid 116, which provides, leads to reactor vessel 114 Various maintenance points in inside.

The size of reactor core body 102 is selected based on Multiple factors, including the characteristic of fuel, desired generated energy, can For space of reactor 100 for using etc..TWR various examples as needed or can it is expected to be used for low-power (about 300MW_e- about 500MW_e), middle power (about 500MW_e- about 1000MW_e) and high power (about 1000MW_eMore than) application in.Can be by core body 102 surroundings set unshowned one or more reflectors to return to neutron reflection in core body 102 to improve reactor 100 Performance.Moved in addition, fissile material and fissible nuclear component can be produced in the core body 102 and around it (or " Change ") to control the nuclear reaction that wherein occurs.

Sodium cooling agent 106 circulates via main sodium cooling agent pump 118 in container 114.Main coolant pump 118 is from cold drop 108 Aspirate sodium cooling agent 106 and it is ejected into pumping chamber (plenum) below reactor core body 102.Cooling agent the last 106 Make upwardly through core body and be heated due to the reaction occurred in reactor core body 102.The cooling agent 106 of heating is from warm Pond 104 enters (one or more) intermediate heat exchanger 120, and leaves intermediate heat exchanger 120 and reenter cold drop 108.This Main Coolant loop 122 thus makes sodium cooling agent 106 be circulated completely in reactor vessel 114.

Intermediate heat exchanger 120 combines and is physically separate from all the time with main sodium pond 104 and 108 that (that is, intermediate sodium and main sodium be forever Far from fusion) one section of Liquid Sodium closed loop.Heat (is fully accommodated in by intermediate heat exchanger 120 from Main Coolant loop 122 In container 114) it is delivered to intercoolant loop 124 (being positioned only part in container 114).Intermediate heat exchanger 120 passes through Elbows 110, so as to bridge hot pond 104 and cold drop 108 (to allow the sodium 106 in Main Coolant loop 122 to flow therebetween It is dynamic).In one example, four intermediate heat exchangers 120 are distributed in container 114.Or heat exchange among two or six Device 120 is distributed in container 114.

Intercoolant loop 124 makes the sodium cooling agent 126 through pipeline disengaging container 114 be followed via reactor lid 116 Ring.Middle sodium pump 128 positioned at the outside of reactor vessel 114 makes sodium cooling agent 126 be recycled to electricity generation system 123.Heat is from master The sodium cooling agent 106 of coolant loop 122 is delivered to the sodium cooling of the intercoolant loop 124 in intermediate heat exchanger 120 Agent 126.The sodium cooling agent 126 of intercoolant loop 124 is by multiple pipes 130 in intermediate heat exchanger 120.These pipes The sodium cooling agent 106 and the sodium cooling agent 126 of intercoolant loop 124 of 130 holding Main Coolant loops 122 separate, Transferring heat energy therebetween simultaneously.

Direct heat exchanger 132 extends into hot pond 104 and generally in case of emergency into Main Coolant loop 122 Sodium cooling agent 106 provide cooling.Direct heat exchanger 132 is configured to allow for sodium cooling agent 106 to be entered and left from hot pond 104 Heat exchanger 132.Direct heat exchanger 132 has the structure similar to intermediate heat exchanger 120, and its middle pipe 134 keeps master cold But the NaK (sodium-potassium) of agent loop 122 and direct reactor coolant loop 138 direct heat exchanger cooling agent (NaK) 136 Separate, while transferring heat energy therebetween.

(in the reactor vessel 114 and outside reactor vessel 114) other assisted reaction pile elements include But it is not limited to be not shown but obvious pump, check-valves, stop valve, flange, discharge launder etc. to those skilled in the art. Through reactor lid 116 other through hole (for example, for the port of main coolant pump 118, inert protective gas and inspection Look into port, sodium processing port, protective gas port etc.) it is not shown.Control system 140 is used to controlling and monitoring anabolic reaction heap 100 various components and system.

Broadly, the present disclosure describes the configuration for the performance for improving above-mentioned reactor.Specifically, for prevent core body and Example, configuration and the arrangement of the vibration prevention system of the relative movement for the internal container structure being positioned above be illustrated and with It is lower to be more fully described with reference to figure below.

Fig. 2 is the fragmentary, perspective view of the inside of TWR fission facilities 200.Internal container structure 202 is with configuration in reactor Rotation plug assembly 204 on the (not shown) of top connects.Two instrument pipeline housings 206 are on rotation plug assembly 204.Pipeline Extended into from the rotated plug assembly 204 of instrument pipeline housing 206 in the hot pond 208 of fission facility 200.Pipeline has been not shown, but Through (related to each instrument pipeline housing 206) collector 210.Pipeline internally terminates at reactor core body in structure of container 212 top.It can monitor in various reactor parameters such as the instrument of temperature and flow velocity insertion pipeline and to be positioned at core body 212 attached Closely.According to the requirement of special-purpose or needs, this instrument may include sensor, (electricity) line, probe or its combination etc..

Internal container structure 202 is connected to rotate with it with rotation plug assembly 204.For example, internal container structure It can be rotated on demand in the top of core body 212 around axis A to provide the access to core body.The access is needed with course of reaction In switch fuel assembly in core body 212.Also include some components in internal container structure 202.These components include flowing and Temperature components, flowing and temperature components dry-well and flowing and temperature components flow guide pipe.These components each with from instrument The pipeline that device pipeline shell 206 extends downwardly is related.In addition, the storage of internal container structure 202 is with being located on rotation plug assembly 204 CRDM 214 connect CRDM guide wire (not shown).CRDM 214 and correlation Guide wire and fission facility 200 it is security-related.For example, if desired, control rod can be via the drive mechanism of correlation It is sent to guide wire in core body 212 to stop the reaction wherein occurring.It is therefore important that even in such as earthquake During and after seismic events, in core body 212 by the position for importing these control rods also keep with CRDM 214 and Its guide wire alignment in structure of container 202 internally.Therefore, one or more suppression systems 216 are fixed on internal container knot On structure 202 with core body suppress ring 218, more specifically engaged with the socket 220 wherein formed.In the example in the figures, three Suppression system 216 can be enough the cross force for resisting any direction around internal container structure 202.Other examples can be adopted With the suppression system 216 of varying number.

The configuration resistance of earthquake suppression system 216 may act in internal container structure 202 and core body 212, possible The transverse load for causing them to misplace.Generally, during operation (when being reacted in core body 212), internal container knot Structure 202 is maintained at the top alignment of core body 212, and suppression system 216 suppresses ring 218 with core body and engaged.When the core of such as fuel Body component need switched in core body 212 or from core body 212 remove or insert in core body 212 when, the quilt of internal container structure 202 Lifted to make suppression system 216 and core body suppress ring 218 and separate simultaneously rotatory dislocation.Therefore, internal container structure 202 can be located at Two axial locations, one be suppression system 216 engage position, one be suppression system 216 separate position.

Fig. 3 A and 3B are the close up perspective view of the vibration prevention system 300 for internal container structure 302 and retouched in the lump State.Internal container structure 302 includes bottom surface 304, and the bottom surface, which can limit, allows sodium to flow through multiple openings 306 therein.Form is At least one suppression system of support 308 nearby extends in bottom surface 304 from internal container structure 302.Support 308 is in bottom surface 304 Lower section extends, to cause internal container structure 302 to be elevated relative to core body.Each support 308 includes counterfort 310 and substrate 312, both is connected to each other and is connected with internal container structure 302.Both counterfort 310 and substrate 312 both terminate in interface board It is connected at 314 and with interface board 314.Interface board 314 limits plane P, and the plane is roughly parallel to the axle of internal container structure 302 Line A (figure 2 illustrates).Interface board 314 provides a tabular surface, and rod extension 316 is securable to the tabular surface.Rod extension 316 internally structure of container 302 and rotating piston (Fig. 2) can be customized after fitting together substantially, to receive in these structures Any tolerance brought during the manufacture and assembling of part.The customization of rod extension 316 can also be received and the phase of internal container structure 302 For the related tolerance of positioning of core body (and the suppression ring engaged to rod extension 316).

Rod extension 316 includes being configured to the rod 318 engaged with suppressing the socket on ring.In addition, bearing 320 is from rod 318 Extend and be configured to be fixed on interface board 314.Rod 318 includes the plane P and internal container structure 302 with interface board 314 The almost parallel axis A of both axis A_P.Therefore, rod 318 can be lifted and fallen so as in the state of without interference straight Remove and insert in socket from socket (Fig. 2).The configurable conical surface 322, rod 318 crosses with bearing 320 at the conical surface, and this can Further help to feel relieved rod 318 in socket.

It should be understood that the disclosure is not limited to concrete structure, processing step or material disclosed herein, but extend to association area Skilled artisan will realize that their equivalent.It should also be understood that term used herein has merely for the sake of description The purpose of body embodiment, and be not intended to be limited.It must be noted that as used in this manual, singulative " one ", "one" and it is " described " include plural number reference, unless separately expressly stating otherwise within a context.

It is evident that system and method described herein be well suited for realizing the objects and advantages mentioned and Wherein intrinsic objects and advantages.Those skilled in the art will recognize that the method and system in this specification can be used and permitted Multimode is implemented and therefore should not limited by the embodiment and example of foregoing illustrative.In this respect, it is described herein different real Any number of feature for applying example is combined into one embodiment and with more than whole features described herein or few spy The alternate embodiment of sign is possible.

Although describing various embodiments for the purpose of this disclosure, various changes and modifications can be made, its is same In the scope contemplated by the disclosure.Those skilled in the art can be made to will readily appreciate that and covered in the disclosure Spirit in many other changes.

Claims (8)

1. A kind of 1. vibration prevention system for fluidal texture, it is characterised in that including：

   Core body；

   The suppression ring around the core body is configured, wherein the suppression ring limits multiple sockets；

   The rotatable internal container structure being movably arranged in above the core body；With

   From multiple suppression systems of internal container structure extension, wherein each suppression system in the multiple suppression system Including：

   Support；

   Fixed interface board on the bracket；With

   The rod extension being fixed on the interface board, wherein at least a portion of the rod extension be configured to be received in it is described In respective socket in multiple sockets.
2. 2. the vibration prevention system according to claim 1 for fluidal texture, it is characterised in that each rod extension bag Bearing and the rod being connected with the bearing are included, wherein the pedestal configurations are into being fixed on the interface board and the bar construction Into being received in the respective socket.
3. 3. the vibration prevention system according to claim 2 for fluidal texture, it is characterised in that the support include counterfort and The substrate being fixed on the counterfort, wherein the interface board is fixed on both the counterfort and the substrate.
4. 4. the vibration prevention system according to claim 1 for fluidal texture, it is characterised in that the rotatable internal appearance Device structure includes bottom surface, wherein each suppression system in the multiple suppression system extends in the subjacent.
5. 5. the vibration prevention system according to claim 1 for fluidal texture, it is characterised in that the interface board limits and institute State the almost parallel plane of the axis of internal container structure.
6. 6. the vibration prevention system according to claim 5 for fluidal texture, it is characterised in that the rod extension includes Rod, the rod have the mandrel line that the axis with the internal container structure extends substantially in parallel.
7. 7. the vibration prevention system according to claim 1 for fluidal texture, it is characterised in that the internal container structure energy Moved between the first axial location and the second axial location.
8. 8. the vibration prevention system according to claim 7 for fluidal texture, it is characterised in that when the internal container structure During in first axial location, the rod extension is received in the socket, and when the internal container structure is in During second axial location, the rod extension is not received in the socket.