CN85103933A - The cooling water recirculation system of boiling water reactor - Google Patents
The cooling water recirculation system of boiling water reactor Download PDFInfo
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- CN85103933A CN85103933A CN198585103933A CN85103933A CN85103933A CN 85103933 A CN85103933 A CN 85103933A CN 198585103933 A CN198585103933 A CN 198585103933A CN 85103933 A CN85103933 A CN 85103933A CN 85103933 A CN85103933 A CN 85103933A
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- pipe
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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 cooling water recirculation system of boiling water reactor comprises: to a plurality of jetting pumps of reactor core water supply; Cooling water circulating pump; Cross bifurcated pipe, its mouth of pipe one links to each other with the drainage port of ebullator by first house steward, and the mouth of pipe two respectively links to each other with a collector with the mouth of pipe three, and the mouth of pipe four and diameter relative with the mouth of pipe one position is less than the mouth of pipe one; Mouth of pipe four-way is crossed a standpipe and is linked to each other with a jetting pump; Other has many standpipes respectively each jetting pump to be linked to each other with collector.By the bifurcated pipe of this mouth of pipe four diameters, the change of tributary fluidised form occurs in the time of can avoiding chilled water in bifurcated pipe, to shunt, thereby make the output power of boiling-water reactor nuclear power station more stable less than the mouth of pipe one diameter.
Description
This invention is related to the cooling water recirculation system of boiling water reactor.
Fig. 1 is the front elevation of cooling water recirculation system in the former technology of boiling water reactor.
Fig. 2 is the view of arrow II-II direction among Fig. 1;
Fig. 3 is the arm partial sectional view shown in Fig. 1;
Fig. 4 is the cut-open view along IV among Fig. 3-IV line, and expression produces the mode of eddy current, arrow indication cooling-water flow direction;
Fig. 5 is the cut-open view of V-V line in Fig. 4;
Fig. 6 is the synoptic diagram at expression arm position, shows the cooling water flow that produces eddy current, arrow indication cooling-water flow direction;
Fig. 7 is the synoptic diagram of expression arm part, is presented in the collector shown in Figure 6 non-vortex cooling water flow, arrow indication cooling-water flow direction;
Fig. 8 is the front elevation of cooling water recirculation system, and the inside comprises a kind of concrete scheme of the invention of boiling water reactor;
Fig. 9 is the view of direction shown in arrow IX-IX among Fig. 8;
Figure 10 is the view of direction shown in arrow X-X among Figure 11;
Figure 11 is the cut-open view of XI-XI line in Figure 10, the vertical cut-open view of the arm in the presentation graphs 8.
Fig. 1 and Fig. 2 represent a boiling water formula reactor, comprise a pressure vessel 1, and chilled water circulates therein, are used for making chilled water to pass the device that pressure vessel 1 circulates in addition, comprise pump 2 and pipeline.
Article one, the end of house steward 7a is connected on the pump orifice of the pump 2 that is driven by motor 2a by valve 10a, and the other end is connected on the pressure vessel 1.
The end of another house steward 7b is connected to by valve 10b on the drainage port of pump 2, and the other end is connected on the end opening of cruciform arm 3.
Each is connected to the collector 4a of arc and 4b with an end on the interface of relative both sides of cruciform arm 3, and the other end then is closed.
The last interface of cruciform arm 3 connects one section reducer 5, and the upper end of this reducer 5 is connecting rising standpipe 6.Other rising standpipe 6a, 6b, 6c and 6d arranges equidistantly that basically rising standpipe 6a wherein and 6b are connected on the collector 4a with an end separately, and rising standpipe 6c and 6d are connected on the collector 4b with an end separately.The other end of these rising standpipes 6,6a, 6b, 6c and 6d all is connected on the pressure vessel 1 separately, so just forms the system of a cover pump 2 and pipeline.
With above-mentioned pump 2 another set of pump 2 and the pipe system similar with pipe system, be arranged on the position relative with said system, like this, two cover systems are installed according to relation adjacent one another are, and are separated by an imaginary line A, as shown in Figure 2.
Every rising standpipe 6,6a, 6b, 6c, 6d connect a jetting pump, and these jetting pumps are discrete each other, are contained in pressure vessel 1 inside, can't see from figure.
Below will be by cover pump 2 and a pipe system, the working condition of cooling water recirculation system in the above-mentioned device that comprises pump 2 and pipeline is described.In the represented system of accompanying drawing, after valve 10a and 10b open, motor 2a driving pump 2.The chilled water that pressure vessel is 1 li is pressed the direction of arrow indication among Fig. 1, is drawn into house steward 7a, and is advanced house steward 7b by pump 2 rows, flows to arm 3 through house steward 7b then.In arm 3, chilled water is divided into several strands, flows to rising standpipe 6, collector 4a and 4b.Chilled water among collector 4a and the 4b is through rising standpipe 6a, 6b, 6c and 6d, feed pressure container 1.
Get back to the chilled water of pressure vessel 1 from rising standpipe 6a, 6b, 6c and 6d, injected the bottom of the pressure vessel 1 that is lower than reactor core, and flow through the reactor core of high temperature by each jetting pump.Part chilled water is transformed into high pressure steam, and is sent to driving steam turbine with generating.Remaining chilled water then is drawn into house steward 7a once more, does described above circulating.
In boiling water reactor, change if be assigned to the flow of every chilled water among rising standpipe 6,6a, 6b, 6c and the 6d.Perhaps the chilled water total flow through these rising standpipes changes, so just will be different because of each pipe by the cooling water flow of each jetting pump piii reactor core body, the result can make the cooling water inflow imbalance of supply response reactor core portion, and fluctuation also might appear in the total flow that flows to the chilled water of reactor core.The fluctuation of chilled(cooling) water supply (CWS) amount causes that the amount of the high pressure steam that chilled water produced that flows through the reactor core fluctuates, and the result changes the power of reactor.
For the power that makes reactor in the nuclear power station that adopts boiling water reactor remains constantly, must make to the chilled(cooling) water supply (CWS) amount of reactor core and keep in balance, make the chilled water total flow that flows to the reactor core keep stable simultaneously.
The target of this invention is, provides a cover can keep the constant boiling water reactor cooling water recirculation system of reactor capability, stablize the electromotive power output of the nuclear power station of the such reactor of employing with this.
In order to realize above-mentioned target, at the reactor core that responds, have in the boiling water reactor of the pressure vessel that holds reactor core and chilled water, this invention provides a jacket water circulation system, comprises a plurality of jetting pumps that are installed in the pressure vessel.Be used for to reactor core cooling water supply; The cooling water circulating pump that pump orifice and drainage port are arranged is connected with pressure vessel by one first house steward at pump orifice; A bifurcated pipe, its first mouth of pipe joins by the drainage port of one second house steward and cooling water circulating pump, and the second and the 3rd mouth of pipe respectively connects a collector, and the position of the 4th mouth of pipe is relative with first mouth of pipe, and diameter is also little than first mouth of pipe; Article one, the first rising standpipe is connected between this 4th mouth of pipe and a pump in a plurality of jetting pump of bifurcated pipe; Many second rising standpipes, each bar all are connected between the pump in one of collector and remaining jetting pump.
This invention is that with the inventor is found to be the basis.The result that the reason of reactor capability fluctuation is studied in the boiling water reactor of this invention technical merit that was the inventor before to illustrated in figures 1 and 2 being in.The research that the inventor did comprises: the mobility status during to chilled water process circulation line is observed, and particularly flows through cruciform bifurcated pipe 3 and near the mobility status it.In order to observe, the cruciform bifurcated pipe that has adopted transparent material to make, the mould shape of parts around having installed, and liquid is flow through from transparent bifurcated pipe and pipeline model.
As the result who observes, know and recognize intuitively, as the fluid jet f that enters bifurcated pipe 3
0Divide the represented different a fluid stream f of three bursts of directions among imaging Fig. 3
1, f
2And f
3The time, with the formal ring of vortex eddy current f around the axia flow of collector 4a represented among Fig. 3 and 4b
4Intensity increases gradually, and scale increases gradually, resembles arrow f among Fig. 6
4Represented.At this moment wait, it is represented to resemble Fig. 7, in reducer 5, can not get development with the mobile multiply fluid jet of the form of eddy current, perhaps can not directly see significantly, under another kind of condition, resemble the multiply liquid stream of Fig. 7 represented and in reducer 5, flow, resemble and to stop liquid to flow to rising standpipe 6 with the form of eddy current.Under this situation, as the arrow f among Fig. 6
4Shown, can not know intuitively with long but also big eddy current form flowing liquid a fluid stream not only and to see, disappeared in other words.Therefore can conclude that two kinds of flow states of this of fluid occur in turn at the neighbouring part of bifurcated pipe 3.Like this, just understand a bit that existence of reducer 5 is to cause the unsettled reason of the flow state of fluid, it makes the flow state of fluid occur changing, say as top institute.
In the represented flow state of Fig. 6, each burst tributary f
1And f
2All be accompanied by a fluid stream f that one flows with the eddy current form
4, and liquid stream f
1And f
2Show than the corresponding a fluid stream f in Fig. 7
1And f
2The bigger pressure loss.The tributary f of result in Fig. 6
1And f
2Flow less than the tributary f among Fig. 7
1And f
2Flow, and tributary f in the flow state of Fig. 6
3Flow but greater than tributary f corresponding among Fig. 7
3Flow.In Fig. 7, be born in 5 li of reducers with the multiply liquid miscarriage that the eddy current form flows.Like this, just can conclude, owing to flow to the change of the cooling water inflow of reactor core, perhaps, chilled water make the cooling water flow that flows to the reactor core inhomogeneous owing to forming eddy current, the variation of caused reactor capability, after all, be because at the moving state labile in the upper reaches, contiguous position of reducer 5, the chilled water fluidised form changes and causes in the cruciform bifurcated pipe 3.
On the basis of above-mentioned discovery, the inventor designs a kind of cooling water recirculation system, and its formation is illustrated among Fig. 8 to 11.This circulation system produces fluidised form in the time of can avoiding chilled water to flow and changes in the cruciform bifurcated pipe, help making the output power of nuclear power station to keep stable.The cooling water recirculation system that belongs to this invention, represented as Fig. 8 to Figure 11, will describe in detail at this.
As seen from Figure 8, the pressure vessel 1 of reactor is connected to the end of house steward 7a, and the other end of house steward 7a is connected on the pump orifice of pump 2 by valve 10a.The end of house steward 7b and the drainage port of pump 2 join, and the other end is received on the lower end mouth of pipe of cruciform bifurcated pipe 11, and the structure of cruciform bifurcated pipe 11 is seen Figure 11. Collector 4a and 4b join with the mouth of pipe of two opposite flanks on an end and the bifurcated pipe 11 separately, and the other end then seals.One end of rising standpipe 6 and the upper end mouth of pipe of bifurcated pipe 11 join.Rising standpipe 6a, 6b, 6c and 6d are with the equally spaced each other setting of standpipe 6.Rising standpipe 6a, 6b are connected on the collector 4a with an end separately, and rising standpipe 6c, 6d then are connected on the collector 4b with an end separately.The other end of these rising standpipes 6a, 6b, 6c and 6d all joins with jetting pump again separately, and these jetting pumps are contained in pressure vessel 1 inside, can't see from figure.
The configuration of bifurcated pipe 11 such as Figure 10 and 11 paint.This bifurcated pipe needn't be as the cooling water recirculation system that is in former technical merit, adopts the reducer 5 as being painted among Fig. 1, but can be directly and rising standpipe 6 join.Like this, the diameter 1 of the bifurcated pipe upper end mouth of pipe just is less than the diameter L of the lower end mouth of pipe.
Another set of ebullator 2 and pipe system that this cover ebullator 2 of describing with the top is identical with pipe system are arranged on the position relative with last cover system, therefore, this two cover system is in the position adjacent relation, and is separated by the line A of a hypothesis, resembles shown in Figure 9.
In having the cooling water recirculation system of aforesaid layout, when ebullator 2 is driven by motor 2a and when turning round, the chilled water in pressure vessel 1 is drawn into house steward 7a, and flow arrow indication among its direction such as Fig. 8 along this pipe.According to the direction of arrow indication, chilled water flows to ebullator 2 from house steward 7a, and is entered house steward 7b by pump, flows to bifurcated pipe 11 then.In bifurcated pipe 11, chilled water is divided into three bursts of tributaries, flow to respectively bifurcated pipe left side collector 4a, right side collector 4b and be positioned at the rising standpipe 6 of bifurcated pipe top.The chilled water that flows into left and right sides collector 4a and 4b flows to each bar rising standpipe 6a, 6b, 6c and 6d subsequently.Then, chilled water is inhaled into the jetting pump that joins with these standpipes from each bar rising standpipe 6,6a, 6b, 6c and 6d, and is gone into to be arranged in the reactor core of pressure vessel 1 by these infusions.Enter the chilled water of pressure vessel 1 by such approach, be subjected to the reactor core heating, become high pressure steam, then, drawn and drives turbodynamo, the energy of high pressure steam is transformed into electric energy output.Be not transformed into the chilled water of steam, under the effect of ebullator 2, continue to flow along the pipeline of cooling water recirculation system.
In the principle with this invention is foundation, have in the cooling water recirculation system of aforesaid structure and operational process, the upper end nozzle diameter of the bifurcated pipe 11 of novel structure is less than its lower end nozzle diameter, its upper end nozzle diameter be substantially equal to rise diameter of standpipe 6, adopt the bifurcated pipe 11 of this configuration, just can cancel resembling the sort of reducer 5 that in belonging to the cooling water recirculation system of prior art, is adopted that Fig. 1 paints.The chilled water phenomenon that flow state changes through bifurcated pipe 11 time, the phenomenon that just in belonging to the system of prior art, occurs Fig. 6 and two kinds of flow states shown in Figure 7 in turn, cause abnormal reducer 5 owing to cancelled, and be suppressed, therefore, can make chilled water be divided into three bursts of tributaries reposefully, in collector 4a and 4b, form long and big eddy current and be unlikely.
Do not produce long and big eddy current in the cooling water flow, stable flow state is very favourable for obtaining.Determine, the reason that obtains such effect is, in the used bifurcated pipe 11 of this invention, the chilled water that flows into bifurcated pipe 11 from house steward 7b collides on the area B and zone C of tube wall, see Figure 11, this effect of impact is impelled current direction left and right sides collector 4a and 4b shunting, has also reduced by arrow f simultaneously
3The impulse force in represented tributary, tributary f
3Impulse force cause easily by arrow f
4Represented eddy current.f
3And f
4See Fig. 4.
As mentioned above, when the cooling water flow that enters bifurcated pipe 11 from house steward 7b is divided into along three bursts of tributaries that three directions flow, near Diverging area flow of cooling water state does not change, and therefore, the unlikely appearance of cooling water flow of being distributed to three flow directions by bifurcated pipe 11 changes.Any variation that changes the pressure loss that causes because of the flow of cooling water state can not appear yet.Thereby the total flow of the chilled water that the reactor core in the process pressure vessel 1 circulates can not change yet.As a result of, the cooling-water flow speed of being discharged by each jetting pump remains constant, unlikely appearance fluctuation.Like this, unbalanced danger may appear in the cooling water inflow of supply response reactor core portion, and perhaps the danger that may change to the total amount of the chilled water of pressure vessel 1 supply just all has been eliminated.This result obtains stable electric power output for the nuclear power station that adopts boiling water reactor positive meaning.As mentioned above, be supplied to the cooling water inflow of reactor core to remain equilibrium, thereby the flow state of chilled water in pressure vessel 1 also keep stable, from the angle of the intensity of service equipment and pipe system, this also is very useful.According to top description, when cooling water flow is divided into three bursts of tributaries in bifurcated pipe 11, can in collector 4a and 4b, not cause promptly long big again swirl shape tributary, so the pressure loss is minimum, cooling water flow is stabilized in preferable flow state, makes reactor can obtain high power.
Claims (2)
1, have the reactor core body at one, and hold in the boiling water reactor of pressure vessel of reactor core body and chilled water, the characteristics of a jacket water circulation system are to have following parts:
A plurality of jetting pumps are installed in the pressure vessel, are used for to reactor core cooling water supply;
Cooling water circulating pump has pump orifice and drainage port, and its pump orifice is connected on the pressure vessel by one first house steward.
Bifurcated pipe has first mouth of pipe above, links to each other with the drainage port of cooling water circulating pump by one second house steward, also have the second and the 3rd mouth of pipe, each links to each other with a collector, on the position relative with first mouth of pipe, also have the 4th mouth of pipe, its diameter is less than the diameter of first mouth of pipe;
, first a rising standpipe, the 4th mouth of pipe of an end and bifurcated pipe joins, and a pump in the other end and a plurality of jetting pump joins;
Many second rising standpipes, each bar all are connected between the pump in a collector and the remaining jetting pump.
2, as the cooling water recirculation system that is put forward in claim 1, characteristics are, the 4th nozzle diameter of above-mentioned bifurcated pipe equates substantially with the diameter of above-mentioned article one rising standpipe.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN198585103933A CN85103933A (en) | 1985-05-03 | 1985-05-03 | The cooling water recirculation system of boiling water reactor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN198585103933A CN85103933A (en) | 1985-05-03 | 1985-05-03 | The cooling water recirculation system of boiling water reactor |
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| Publication Number | Publication Date |
|---|---|
| CN85103933A true CN85103933A (en) | 1986-12-10 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN198585103933A Pending CN85103933A (en) | 1985-05-03 | 1985-05-03 | The cooling water recirculation system of boiling water reactor |
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|---|---|
| CN (1) | CN85103933A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112728971A (en) * | 2020-12-30 | 2021-04-30 | 西安交通大学 | Preheating device in nuclear thermal propulsion system |
-
1985
- 1985-05-03 CN CN198585103933A patent/CN85103933A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112728971A (en) * | 2020-12-30 | 2021-04-30 | 西安交通大学 | Preheating device in nuclear thermal propulsion system |
| CN112728971B (en) * | 2020-12-30 | 2021-10-19 | 西安交通大学 | Preheating device in nuclear thermal propulsion system |
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