CN105118533B - The control method of reactivity control system, nuclear reactor and nuclear reactor - Google Patents
The control method of reactivity control system, nuclear reactor and nuclear reactor Download PDFInfo
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- CN105118533B CN105118533B CN201510571499.6A CN201510571499A CN105118533B CN 105118533 B CN105118533 B CN 105118533B CN 201510571499 A CN201510571499 A CN 201510571499A CN 105118533 B CN105118533 B CN 105118533B
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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 invention provides for a kind of reactivity control system for nuclear reactor, the reactivity control system includes：Control pipeline, at least a portion of the control pipeline is suitable to be arranged in the reactor core of nuclear reactor；First control fluid input channel, the first control fluid input channel is connected with control pipeline, for the first control fluid to be inputted into control pipeline；Second control fluid input channel, the second control fluid input channel is connected with control pipeline, for the second control fluid to be inputted into control pipeline；And fluid delivery pipeline, for exporting the fluid-mixing being mixed into by the first control fluid and the second control fluid from control pipeline.According to the embodiment of the present invention, absorptivity of the control material to neutron can for example be improved.
Description
Technical field
Embodiments of the invention are related to a kind of for the reactivity control system of nuclear reactor, nuclear reactor and nuclear reactor
Control method.
Background technology
Conventional pile reactivity control method is by by above and below control rod intercalation reaction heap reactor core and progress at present
Move to control neutron reaction, its principle is to absorb the neutron in reactor by absorber in control rod, regulation
Neutron balance in reactor, so as to reach the purpose of reactivity control and shutdown.The control bar material of reactor is generally selected
B4The solid metal such as C or silver-indium-cadmium.
The content of the invention
The purpose of embodiments of the invention is to provide the controlling party of reactivity control system, nuclear reactor and nuclear reactor
Method, thus for example, absorptivity of the control material to neutron can be improved.
There is provided a kind of reactivity control system for nuclear reactor, reactivity control for embodiments in accordance with the present invention
System processed includes：Control pipeline, at least a portion of the control pipeline is suitable to be arranged in the reactor core of nuclear reactor；First control
Fluid input tube road processed, the first control fluid input channel is connected with control pipeline, for the first control fluid to be inputted
Control pipeline；Second control fluid input channel, the second control fluid input channel is connected with control pipeline, for by the
Two control fluid input control pipelines；And fluid delivery pipeline, for from control pipeline output by the first control fluid and the
The fluid-mixing that two control fluids are mixed into.
Embodiments in accordance with the present invention, the control pipeline includes the multiple of the center line arrangement around nuclear reactor
Each end and the described first control fluid input channel in Branch control pipeline, the plurality of Branch control pipeline
Connected with the second control fluid input channel and another end is connected with the fluid delivery pipeline.
Embodiments in accordance with the present invention, the second control fluid input channel includes ring main road, the multiple branch's control
Each end in tubing giving sufficient strength is connected with the ring main road of the second control fluid input channel.
It is each in embodiments in accordance with the present invention, the first control fluid input channel and the second control fluid input channel
Individual each the end all included in ring main road, the multiple Branch control pipeline and the first control fluid input
The ring main road connection in the ring main road of pipeline and the second control fluid input channel.
It is each in embodiments in accordance with the present invention, the first control fluid input channel and the second control fluid input channel
Individual each the end all included in ring main road, the multiple Branch control pipeline and the first control fluid input
The ring main road connection in the ring main road of pipeline and the second control fluid input channel, and fluid delivery pipeline includes ring
The road ring main of another end of each and fluid delivery pipeline in shape main pipeline, the multiple Branch control pipeline
Road is connected.
Embodiments in accordance with the present invention, the second control fluid input channel includes ring main road, the multiple branch's control
Each end in tubing giving sufficient strength is connected with the ring main road of the second control fluid input channel, and fluid is exported
Pipeline includes ring main road, another end of each and fluid delivery pipeline in the multiple Branch control pipeline
Road ring main road is connected.
Embodiments in accordance with the present invention, control pipeline includes centrally disposed multiple branch's controls around nuclear reactor
Tubing giving sufficient strength, the second control fluid input channel and fluid delivery pipeline are by first pair including internal pipeline and external pipe
Layer pipeline is constituted, wherein the internal pipeline formation fluid delivery pipeline of the first double-skin duct, and the exterior tube of the first double-skin duct
Road forms the second control fluid input channel, and the Branch control pipeline is by including the second of internal pipeline and external pipe
Double-skin duct is constituted, the external pipe and internal pipeline of the first double-skin duct and the external pipe and inner tube of the second double-skin duct
Road is connected respectively in an end of the second double-skin duct, and the internal pipeline and external pipe of the second double-skin duct are at second pair
Another end of layer pipeline is interconnected.
Embodiments in accordance with the present invention, outside another end described in the second double-skin duct, the second double-skin duct
Portion's pipeline be closing, and the second double-skin duct internal pipeline be opening so that the internal pipeline of the second double-skin duct with
External pipe is connected.
Embodiments in accordance with the present invention, the first double-skin duct includes ring main road, is used as the second control fluid input tube
The external pipe in the ring main road of first double-skin duct in the ring main road in road and the external pipe of the second double-skin duct exist
The end connection of second double-skin duct, is used as the annular of first double-skin duct in the ring main road of fluid delivery pipeline
The internal pipeline of main pipeline is connected with the internal pipeline of the second double-skin duct in one end of the second double-skin duct.
Embodiments in accordance with the present invention, the first control fluid input channel includes ring main road, and the first control fluid is defeated
Enter the ring main road of pipeline to be connected in one end of the second double-skin duct with the external pipe of the second double-skin duct.
Embodiments in accordance with the present invention, the Branch control pipeline has substantially C-shaped shape.
Embodiments in accordance with the present invention, described at least a portion of the control pipeline extends vertically.
Embodiments in accordance with the present invention, one end of second double-skin duct is second double-skin duct
Upper end, and another described end of second double-skin duct is the bottom of second double-skin duct.
Embodiments in accordance with the present invention, the described reactivity control system for nuclear reactor also includes：It is arranged on
The first pump in the ring main road of two control fluid input channels, for making fluid-mixing be circulated in the control pipeline.
Embodiments in accordance with the present invention, the described reactivity control system for nuclear reactor also includes：It is arranged on stream
The second pump in the ring main road of body output channel, for making fluid-mixing be circulated in the control pipeline.
The reactivity control system for nuclear reactor described in embodiments in accordance with the present invention also includes：For making first
The valve that control fluid input channel is connected and disconnected from multiple Branch control pipelines.
Embodiments in accordance with the present invention, the valve is arranged on the downstream of the first control fluid input channel.
Embodiments in accordance with the present invention, the control that the control material that the first control fluid is included controls fluid to include than second
The concentration of material is high, and the first controlling stream physical efficiency makes reactor shutdown.
Embodiments in accordance with the present invention include there is provided a kind of nuclear reactor, the nuclear reactor：Reactor core；And it is above-mentioned
Reactivity control system, wherein at least a portion of the control pipeline is arranged in the reactor core.
Embodiments in accordance with the present invention include there is provided a kind of control method of nuclear reactor, the control method：By first
Fluid and the second control fluid is controlled to input simultaneously in control pipeline, at least a portion of control pipeline is arranged on nuclear reactor
In reactor core, and make to be circulated in the pipeline by the fluid-mixing that the first control fluid and the second control fluid are mixed into.
According to the embodiment of the present invention, absorptivity of the control material to neutron can for example be improved.
Brief description of the drawings
Accompanying drawing is used for providing a further understanding of the present invention, and constitutes a part for specification, the reality with the present invention
Applying example is used to explain the present invention together, is not construed as limiting the invention.In the accompanying drawings：
Fig. 1 is the schematic diagram of the nuclear reactor reactivity control system according to the embodiment of the present invention；
Fig. 2 is the schematic diagram of the reactivity control system of an example according to the present invention；
Fig. 3 is the schematic block diagram of the reactivity control system of an example according to the present invention；
Fig. 4 is the schematic diagram of the reactivity control system of another example according to the present invention；And
Fig. 5 is the schematic cross-section of the control pipeline of the reactivity control system of another example of the present invention.
Embodiment
Illustrate the embodiment of the present invention with reference to Figure of description.
The preferred embodiments of the present invention are illustrated below in conjunction with accompanying drawing, it will be appreciated that embodiment described herein
It is merely to illustrate and explain the present invention, is not intended to limit the present invention.
Fig. 1 shows the nuclear reactor reactivity control system of the exemplary embodiment according to the present invention, and Fig. 2 and 3 is shown
According to the reactivity control system of example of the present invention, and Fig. 4 is shown according to the anti-of another example of the present invention
Answering property control system.
Referring to Fig. 1 to 4, nuclear reactor includes according to an embodiment of the invention：Reactor core；And reactivity control system.
At least a portion of the control pipeline of reactivity control system is arranged in the reactor core.
As shown in Figures 1 to 4, the reactivity control system 100 according to an embodiment of the invention for nuclear reactor includes：
Control pipeline 5, at least a portion of the control pipeline 5 is suitable to be arranged in the reactor core 6 of nuclear reactor；First control fluid is defeated
Enter pipeline 10, the first control fluid input channel 10 is connected with control pipeline 5, for the first control fluid input to be controlled
Pipeline 5；Second control fluid input channel 20, the second control fluid input channel 20 is connected with control pipeline 5, for inciting somebody to action
Second control fluid input control pipeline 5；And fluid delivery pipeline 30, for being exported from control pipeline 5 by the first controlling stream
The fluid-mixing that body and the second control fluid are mixed into.Described at least a portion of the control pipeline 5 extends vertically.First control
The control material that fluid processed is included is higher than the concentration for the control material that the second control fluid is included, and the first controlling stream physical efficiency makes instead
Answer heap shutdown.
As shown in figs. 1 and 3, reactivity control system 100 also includes：Reactive detection means 101, reactive control device
102nd, supplementary device 103 and waste material recovery device 104.The reactivity control system may be mounted at any type reactor system
In, the central axis that multiple Branch control pipelines 51 can surround reactor core 6 is symmetrical.The number of Branch control pipeline 51
Amount can specifically be set according to real reaction heap situation, can be selected and be made with the identical structural material of reactor core 6.Branch control pipe
Road 51 can be individual layer C-shaped pipeline as shown in Figure 2 or entrance and exit as shown in Figure 3 same one end bilayer
Pipeline, the direction of Branch control pipeline 51 can both be set as shown in Figure 2 and Figure 3, and will can also turn upside down setting.
As shown in Figures 1 to 3, the control pipeline 5 includes the multiple branches arranged around the center line of nuclear reactor 6
Each end and the described first control fluid input channel in control pipeline 51, the plurality of Branch control pipeline 51
10 and second control fluid input channel 20 connect and another end is connected with the fluid delivery pipeline 30.
According to the example of the present invention, as shown in Fig. 2 the first control fluid input channel 10 includes ring main road
12, each the end and the annular of the first control fluid input channel 10 in the multiple Branch control pipeline 51 are main
Pipeline 12 is connected, and the second control fluid input channel 20 is included in ring main road 20, the multiple Branch control pipeline 51
The end of each is connected with the ring main road 22 of the second control fluid input channel 20, and fluid delivery pipeline 30
Including ring main road 32, another end of each and fluid delivery pipeline 30 in the multiple Branch control pipeline 51
Road ring main road 32 connect.The Branch control pipeline 51 can have substantially C-shaped shape.Branch control pipeline 51 is extremely
Few vertical extension of a part.
According to another example of the present invention, as shown in figure 4, control pipeline 5 is included around the center of nuclear reactor
Multiple Branch control pipelines 51 of arrangement, the second control fluid input channel 20 and fluid delivery pipeline 30 are by including inside
First double-skin duct 40 of pipeline and external pipe is constituted, the internal pipeline formation fluid delivery pipeline of the first double-skin duct 40
30, and the external pipe of the first double-skin duct 40 forms the second control fluid input channel 20, the Branch control pipeline
51 are made up of the second double-skin duct including internal pipeline and external pipe, the external pipe and inner tube of the first double-skin duct 40
Road is connected respectively with the external pipe and internal pipeline of the second double-skin duct in an end of the second double-skin duct, second pair
The internal pipeline and external pipe of layer pipeline are interconnected in another end of the second double-skin duct, as shown in Figure 5.Branch
At least a portion of control pipeline 51 extends vertically.
As shown in figure 5, in another end described in the second double-skin duct, the external pipe 18 of the second double-skin duct is
Closing, and the internal pipeline 17 of the second double-skin duct is opening so that the internal pipeline 17 of the second double-skin duct and outside
Pipeline 18 is connected.
As shown in figure 4, the first double-skin duct includes ring main road, the annular of the second control fluid input channel 20 is used as
The external pipe in the ring main road of the first double-skin duct of main pipeline 22 and the external pipe of the second double-skin duct are at second pair
The end connection of layer pipeline, the annular as first double-skin duct in the ring main road 32 of fluid delivery pipeline 30 is main
The internal pipeline of pipeline is connected with the internal pipeline of the second double-skin duct in one end of the second double-skin duct.First
Ring main road 12 can be included by controlling fluid input channel 10, the ring main road 12 of the first control fluid input channel 10 with
The external pipe of second double-skin duct is connected in one end of the second double-skin duct.
As shown in figure 4, one end of second double-skin duct is the upper end of second double-skin duct, and
Another described end of second double-skin duct is the bottom of second double-skin duct.
As shown in figure 3, reactivity control system 100 also includes：It is arranged on the annular of the second control fluid input channel 20
The first pump 70 in main pipeline 22, for making fluid-mixing be circulated in the control pipeline 5.Reactivity control system 100 is also
It can include：The second pump 80 in the ring main road 32 of fluid delivery pipeline 30 is arranged on, for making fluid-mixing described
Circulated in control pipeline 5.
As shown in figure 3, reactivity control system 100 also includes：For make the first control fluid input channel 10 with it is multiple
The valve 90 that Branch control pipeline 51 is connected and disconnected from.The valve 90 can be arranged on the first control fluid input channel 10
Downstream.
As shown in Figure 1, Figure 2, Figure 3 shows, reactive detection means 101 is included in the upper inlet of every Branch control pipeline 51
The neutron-absorbing detection means 1011 and material concentration detection means 1012 set at place and lower exit port, according to set in advance
Time interval is detected to the fluid in pipeline.Neutron-absorbing detection means 1011 and control material concentration detection means 1012
The entrance and exit position of every Branch control pipeline 51 is arranged at, the relevant parameter in each site is gathered respectively, to examine
Survey whether neutron-absorbing in Branch control pipeline 51 tends to saturation, the concentration for controlling material and response time.Neutron-absorbing is examined
Survey device and can select neutron gauge, control material concentration detection means can select gas/liquid concentration detector.
Supplementary device 103 includes high concentration control material supplementary device 1031 and low concentration control material supplementary device
1032.Supplementary device is located at the inlet duct 11,21 being connected with main pipeline, and standby neutron control material is stored in supplement dress
Put in 103, its data that can be fed back according to reactive detection means 101 carries out dynamic regulation to the concentration for controlling material in time,
And control material is supplemented in every Branch control pipeline 51.
Reactive control device 102 includes the pump on the inlet tube 11 and 21 and outlet 31 of main pipeline 12,22,32
112nd, 212 and valve 111,211,311, the effect of the reactive control device 102 is fed back according to reactive detection means 101
Data, in multiple Branch control pipelines 51 and main pipeline 12,22,32 neutron control material change, reactivity control
Device 102 processed can adjust the concentration of neutron control material and response time in pipeline.
It is stored in highly concentrated in high concentration control material supplementary device 1031 and low concentration control material supplementary device 1032
Degree control material and low concentration control material respectively by the valve 111 and 211 being arranged on inlet tube 11 and 21, by such as gas
Body pump and the pump of liquid pump are pumped into entrance main pipeline 12 and 22, by three-way pipe, the control material in entrance main pipeline 12 and 22
Flow into each Branch control pipeline 51 being arranged in reactor core 6 and be mixed, then come together in lower exit port main pipeline 32.Work as pipe
It is full of in road after fluid, valve 111 and 211, the valve 311 on outlet 31 and the entrance supervisor closed on inlet tube 11,21
The valve 90 in road 12 and each junction of Branch control pipeline 51, makes entrance main pipeline 22, Branch control pipeline 51 and outlet master
One confined space of formation of pipeline 32, while being equipped with such as gas pump and liquid in entrance main pipeline 22 and outlet main pipeline 32
Control material in the pump 70 of body pump and 80 pairs of confined spaces is circulated promotion.
When find some Branch control pipeline 51 in neutron-absorbing detection means 1011 and material concentration detection means
1012 parameter reaches given threshold, then opens the valve 111 and 211 on inlet tube 11,21, the valve 311 on outlet 31
And main pipeline 12 and the valve 90 of each junction of Branch control pipeline 51, absorb valve of the fluid after neutron from outlet 31
311 outputs are further processed to waste material recovery device 104.At the same time, new neutron absorber material is from supplementary device
High concentration control material supplementary device 1031 and low concentration control material supplementary device 1032 through inlet tube 11 and 12 be pumped into
Dynamic regulation is carried out in mouth main pipeline 12 and 22, mixed control material is separately flowed into Branch control pipeline 51.Work as neutron
The parameter that absorption detecting device 1011 and material concentration detection means 1012 are detected, which meets, to impose a condition, then closes inlet tube
11st, valve 111 and 211, the valve 311 on outlet 31 and the entrance main pipeline 12 on 21 connect with each Branch control pipeline 51
The valve 90 at place is connect, entrance main pipeline 22, Branch control pipeline 51 and outlet main pipeline 32 is re-formed a confined space,
The replacing of control material does not influence the normal operation of reactor.
If needing the Branch control pipeline 51 in dismounting and change the present embodiment, it will first can be located at using mechanical arm on reactor core 6
The vertical pipeline of the Branch control pipeline 51 of side or lower section and the joint 9 of bend pipe are unscrewed, and bend pipe is separated with straight tube, then with machinery
Arm extracts it out from reactor core.
Such as Fig. 4, shown in Fig. 5, employ in a second embodiment entrance and exit same one end double-skin duct (obviously,
Entrance and exit can also be used in the twin flue of same one end), therefore except high concentration control material input channel 11 is individual layer
Outside, other pipelines are disposed as bimetallic tube.First, high concentration control material supplementary device 1031 and low concentration control are stored in
High concentration control material and low concentration in prepared material supplementary device 1032 control material respectively by being arranged on the He of inlet tube 11
The valve 111,211 on inlet tube 21 that the outer tube of double-skin duct 40 is constituted, main pipeline 12 and outer tube structure are pumped into by pump 112,212
Into main pipeline 22 in, afterwards by mixing flow into being arranged in the outer tube 18 of each Branch control pipeline 51 in reactor core 6, then
Fluid flows into inner tube 17 from the head 14 of Branch control pipeline 51, and comes together in the main pipeline 32 being made up of the inner tube of double-skin duct 40
In, finally control material defeated from the valve 311 on the outlet 31 that the main pipeline 32 with the inner tube of double-skin duct 40 composition is connected
Go out to waste material recovery device 104 and be collected.After fluid is full of in pipeline, the and of valve 111 closed on inlet tube 11,21
211st, the valve 90 of the valve 311 and entrance main pipeline 12 on outlet 31 and each junction of Branch control pipeline 51, make into
Mouth main pipeline 22, Branch control pipeline 51 and outlet one confined space of formation of main pipeline 32, while in the He of entrance main pipeline 22
The control material being equipped with outlet main pipeline 32 in such as gas pump and the pump of liquid pump 70 and 80 pairs of confined spaces is followed
Ring is promoted.
Neutron is provided with the head 14 of the entrance of every Branch control pipeline 51, outlet and Branch control pipeline 51
Absorption detecting device 1011 and material concentration detection means 1012, join according to time interval set in advance to the fluid in pipeline
Number detected, when find some Branch control pipeline 51 in neutron-absorbing detection means 1011 and material concentration detection means
1012 parameter reaches given threshold, then opens the valve 111 and 211 on inlet tube 11,21, the valve 311 on outlet 31
And main pipeline 12 and the valve 90 of each junction of Branch control pipeline 51, absorb valve of the fluid after neutron from outlet 31
311 outputs are further processed to waste material recovery device 104.At the same time, new neutron absorber material is from supplementary device
High concentration control material supplementary device 1031 and low concentration control material supplementary device 1032 through inlet tube 11 and 12 be pumped into
Dynamic regulation is carried out in mouth main pipeline 12 and 22, mixed control material is separately flowed into Branch control pipeline 51.Work as neutron
The parameter that absorption detecting device 1011 and material concentration detection means 1012 are detected, which meets, to impose a condition, then closes inlet tube
11st, valve 111 and 211, the valve 311 on outlet 31 and the entrance main pipeline 12 on 21 connect with each Branch control pipeline 51
The valve 90 at place is connect, entrance main pipeline 22, Branch control pipeline 51 and outlet main pipeline 32 is re-formed a confined space,
The replacing of control material does not influence the normal operation of reactor.
If needing the Branch control pipeline 51 in dismounting and change the present embodiment, it can be used mechanical arm directly by Branch control pipe
Extracted out from reactor core 6 in road 51.
Embodiments in accordance with the present invention, contain the fluid of the strong absorbent of neutron as main material, such as boric acid, tetraboric acid
Sodium, gadolinium nitrate (Gd (NO3)3·xH2The soluble neutron poison such as O).
Embodiments in accordance with the present invention, Branch control pipeline 51 can be uniformly distributed and be inserted in the internal reservation of reactor core 6
Cavity in, it is separate with reactor core, can be used mechanical arm it is dismantled, changed, Branch control pipeline 51
Quantity determined by being actually needed.Branch control pipeline 51 is used and reactor core identical structural material, 2~5mm of pipeline wall thickness, directly
20~30cm of footpath, if from double-skin duct, it is transversal with inner layer pipe that its inner layer pipe cross-sectional area should be greater than outer layer pipe
The difference of face area.
It is stored in as the fluid of reactivity control material in supplementary device 103, supplementary device 103 is controlled including high concentration
Material supplementary device 1031 and low concentration control material supplementary device 1032, low concentration control material can be the dilution such as water or air
Agent, high concentration control material can be that can make the neutron-absorbing material of respective reaction heap shutdown concentration.In the outside of reactor core, if
Main pipeline 12,22,32 is equipped with, Branch control pipeline 51 is linked together.
Waste material recovery device 104 is arranged at the outlet 31 being connected with outlet main pipeline 32, and it will can divide as needed
The waster material fluid after neutron is absorbed in branch control pipeline 51 to export and reclaim.
The control method of nuclear reactor a kind of according to an embodiment of the invention, the control method includes：By the first control
Fluid and the second control fluid are inputted in control pipeline simultaneously, and at least a portion of control pipeline is arranged on the reactor core of nuclear reactor
In, and make to be circulated in the pipeline by the fluid-mixing that the first control fluid and the second control fluid are mixed into.
Embodiments of the invention have the advantages that：Firstth, using fluid as control material, make control material with
Neutrons contact face is greatly increased, and can effectively improve the absorptivity of neutron；Secondth, concentration of the feedback parameter to control material can be passed through
Real-time dynamic regulation is carried out, the response time is substantially increased；3rd, with control rod of traditional solid metal as control material
It can be only applied to a certain corresponding reactor to compare, the present invention can be according to the type of reactor, and selection has different neutron captures
The control material in section, applicability is wider；4th, it need not be driven, tied using mechanical device as traditional reactor control rod
Structure simplifies, manufacturing cost reduction, while can also effectively save reactor inner space；5th, it is due to control material selection
Fluid, directly can input or export out of Branch control pipeline 51, be effectively reduced radioactive pollution link, safely, conveniently.
In above example, fluid is in entrance main pipeline 22, Branch control pipeline 51 and the outlet formation of main pipeline 32 one
Circulated in confined space, but fluid can also be circulated in any suitable manner, for example, any in reactor core 6 passes through valve
Circulated in the closed loop that door is formed, or the pipeline in reactor core 6 is arranged in part, be partly arranged on the pipeline of the outside of reactor core 6
Circulated in the loop of composition.
Embodiment of above is merely to illustrate the present invention, and not limitation of the present invention, about the common of technical field
Technical staff, without departing from the spirit and scope of the present invention, can also make a variety of changes and modification, therefore all
Equivalent technical scheme falls within scope of the invention, and scope of patent protection of the invention should be defined by the claims.
Claims (17)
1. a kind of reactivity control system for nuclear reactor, including：
Control pipeline, at least a portion of the control pipeline is suitable to be arranged in the reactor core of nuclear reactor；
First control fluid input channel, the first control fluid input channel is connected with control pipeline, for first to be controlled
Fluid processed inputs control pipeline；
Second control fluid input channel, the second control fluid input channel is connected with control pipeline, for second to be controlled
Fluid processed inputs control pipeline；And
Fluid delivery pipeline, for exporting the mixed flow being mixed into by the first control fluid and the second control fluid from control pipeline
Body,
The control pipeline includes the multiple Branch control pipelines arranged around the center line of nuclear reactor, the plurality of branch
Each end and the described first control fluid input channel and the second control fluid input channel in control pipeline
Connect and another end be connected with the fluid delivery pipeline,
A part, a part for the fluid delivery pipeline and the multiple Branch controls of the second control fluid input channel
Pipeline can form the loop of fluid-mixing circulation.
2. the reactivity control system according to claim 1 for nuclear reactor, wherein
Second control fluid input channel includes each end in ring main road, the multiple Branch control pipeline
Portion is connected with the ring main road of the second control fluid input channel.
3. the reactivity control system according to claim 1 for nuclear reactor, wherein
Each in first control fluid input channel and the second control fluid input channel includes ring main road, described
Each end and the ring main road and second of the first control fluid input channel in multiple Branch control pipelines
The ring main road connection of fluid input channel is controlled, and
Fluid delivery pipeline includes another end of each and stream in ring main road, the multiple Branch control pipeline
The road ring main road connection of body output channel.
4. the reactivity control system according to claim 1 for nuclear reactor, wherein
Second control fluid input channel includes each end in ring main road, the multiple Branch control pipeline
Portion is connected with the ring main road of the second control fluid input channel, and
Fluid delivery pipeline includes another end of each and stream in ring main road, the multiple Branch control pipeline
The road ring main road connection of body output channel.
5. the reactivity control system according to claim 1 for nuclear reactor, wherein
Control pipeline includes centrally disposed multiple Branch control pipelines around nuclear reactor,
The second control fluid input channel and fluid delivery pipeline are double-deck by first including internal pipeline and external pipe
Pipeline is constituted, wherein the internal pipeline formation fluid delivery pipeline of the first double-skin duct, and the external pipe of the first double-skin duct
The second control fluid input channel is formed, the Branch control pipeline is by second pair including internal pipeline and external pipe
Layer pipeline is constituted, the external pipe and internal pipeline of the first double-skin duct and the external pipe and internal pipeline of the second double-skin duct
Connected respectively in an end of the second double-skin duct, the internal pipeline and external pipe of the second double-skin duct are double-deck second
Another end of pipeline is interconnected.
6. the reactivity control system according to claim 5 for nuclear reactor, wherein
In another end described in the second double-skin duct, the external pipe of the second double-skin duct is to close, and second pair
The internal pipeline of layer pipeline is opening so that the internal pipeline of the second double-skin duct is connected with external pipe.
7. the reactivity control system according to claim 5 for nuclear reactor, wherein
First double-skin duct includes ring main road, double-deck as the first of the ring main road of the second control fluid input channel
The external pipe in the ring main road of pipeline and the external pipe of the second double-skin duct are in an end of the second double-skin duct
Connection, is used as the internal pipeline in the ring main road of first double-skin duct in the ring main road of fluid delivery pipeline and second pair
The internal pipeline of layer pipeline is connected in one end of the second double-skin duct.
8. the reactivity control system for nuclear reactor according to claim 5 or 7, wherein
First control fluid input channel includes ring main road, the ring main road and second of the first control fluid input channel
The external pipe of double-skin duct is connected in one end of the second double-skin duct.
9. the reactivity control system according to claim 1 for nuclear reactor, wherein
The Branch control pipeline has substantially C-shaped shape.
10. the reactivity control system according to claim 1 for nuclear reactor, wherein
Described at least a portion of the control pipeline extends vertically.
11. the reactivity control system according to claim 5 for nuclear reactor, wherein
One end of second double-skin duct is the upper end of second double-skin duct, and second bimetallic tube
Another end in road is the bottom of second double-skin duct.
12. the reactivity control system for nuclear reactor according to claim 4 or 7, also includes：
The first pump in the ring main road of the second control fluid input channel is arranged on, for making fluid-mixing in the control
Circulated in pipeline.
13. the reactivity control system according to claim 12 for nuclear reactor, also includes：
The second pump in the ring main road of fluid delivery pipeline is arranged on, for making fluid-mixing be followed in the control pipeline
Ring.
14. the reactivity control system according to claim 13 for nuclear reactor, also includes：
For the valve for being connected and disconnected from the first control fluid input channel and multiple Branch control pipelines.
15. the reactivity control system according to claim 14 for nuclear reactor, wherein
The valve is arranged on the downstream of the first control fluid input channel.
16. the reactivity control system according to claim 1 for nuclear reactor, wherein
The control material that first control fluid is included is higher than the concentration for the control material that the second control fluid is included, and the first control
Fluid can make reactor shutdown.
17. a kind of nuclear reactor, including：
Reactor core；And
Reactivity control system described in claim 1, wherein at least a portion of the control pipeline is arranged on the reactor core
In.
Priority Applications (1)
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| US3624241A (en) * | 1970-02-10 | 1971-11-30 | Nasa | Method and apparatus for controlling thermal nuclear reactors |
| JPS54125392A (en) * | 1978-03-24 | 1979-09-28 | Hitachi Ltd | Nuclear reactor shut-down device with liquid poison tube |
| US5045275A (en) * | 1989-05-16 | 1991-09-03 | The Georgia Tech Research Corporation | Gaseous reactor control system |
| US5319688A (en) * | 1991-03-01 | 1994-06-07 | Hora Heinrich W | Pneumatic safety equipment to prevent the overheating of nuclear reactors |
| WO2011006512A2 (en) * | 2009-07-15 | 2011-01-20 | Mahmoud El-Sayed Dorrah | Temperature-reactive control module for nuclear reactors |
| CN104616707B (en) * | 2014-12-30 | 2017-03-22 | 中国原子能科学研究院 | Boron injection system for second reactor shutdown system of research reactor |
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