CN104961271B - Quick starting method of condensate polishing system of nuclear power station - Google Patents
Quick starting method of condensate polishing system of nuclear power station Download PDFInfo
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- CN104961271B CN104961271B CN201510325485.6A CN201510325485A CN104961271B CN 104961271 B CN104961271 B CN 104961271B CN 201510325485 A CN201510325485 A CN 201510325485A CN 104961271 B CN104961271 B CN 104961271B
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Abstract
The invention discloses a quick starting method of a condensate polishing system of a nuclear power station, and belongs to the technical field of condensate polishing of the nuclear power station. The quick starting method of the condensate polishing system of the nuclear power station comprises the following steps of enabling the condensate polishing system to be in a first hot standby mode or a second hot standby mode; and transforming the condensate polishing system from the first hot standby mode or the second hot standby mode to a running mode when the quality of condensate is abnormal. By the quick starting method, the condensate polishing system can run within 2 minutes when the quality of the condensate is abnormal, the condensate can be purified, the quality of the condensate can be recovered rapidly, safe and reliable running of the nuclear power station is guaranteed, and economic loss is avoided.
Description
Technical field
The present invention relates to nuclear power station condensation water precision processing technical field, particularly to a kind of nuclear power station condensation water essence
Processing system quick start method.
Background technology
Nuclear power station condensation water precision processing system is at nuclear power station unit starting, stand-by heat, safe shutdown, cold
When shutdown and Power operation period two loop condense water water quality generation exception, remove the solute condensed in water
Matter and suspended impurity.When condensing water water quality and being normal, condensed water precision processing system is in stoppage in transit pattern, from
The condensation water of condensate system directly passes through condensate system by-pass line without condensed water precision processing system
Return to condensate system.When condensing water water quality and occurring abnormal, such as, during Power operation, condenser is revealed
Water quality is abnormal to cause secondary coolant circuit system to occur, is to run mould by condensed water precision processing system by Mode change of stopping transport
Formula, now, condenses water and enters condensed water precision processing system, and after purifying, quality recovery refers to normal control
Mark scope.
As it is shown in figure 1, the condensed water precision processing system of AP1000 series nuclear power station and condensate system shunt valve
Line 9 is in parallel, specifically include that be sequentially connected with preposition cation bed 1, high flow rate mixed bed 4, post-filter 7 and
Condense water booster pump 8；The most preposition cation bed 1, high flow rate mixed bed 4 and post-filter 7 are for condensing water
Purifying, the described condensation water booster pump 8 condensation water after purifying is by described condensate polishing treatment system
System output.Above-mentioned condensed water precision processing system also includes the condensation water in parallel with condensate system by-pass line 9
Precision processing system by-pass line 10, when condensed water precision processing system is safeguarded, makes condensation water at condensate fine
It is circulated inside processing system, the most normal with equipment each in checking condensed water precision processing system.
Under stoppage in transit pattern, above-mentioned preposition cation bed 1, high flow rate mixed bed 4, post-filter 7 and condensation water
Booster pump 8 is in stoppage in transit state, and relevant valve is also in closed mode.Above-mentioned condensate polishing treatment
The operational mode of system as in figure 2 it is shown, in the operating mode, above-mentioned preposition cation bed 1, high flow rate mixed bed 4,
Post-filter 7 and condensation water booster pump 8 are in running status, condense water from condensate polishing treatment system
System inlet valve V01 enter condensed water precision processing system, through preposition cation bed 1, high flow rate mixed bed 4 and after
After putting the purification of filter 7, by condensing after water booster pump 8 boosts by condensed water precision processing system outlet valve
Door output V17 output returns to condensate system.In the operating mode, relevant valve such as condensate polishing treatment
System inlet valve V01, cation bed inlet valve V02, cation bed flowing water Valve V04, mixed bed inlet valve V07,
Mixed bed flowing water Valve V09, filter inlet valve V12, filter flowing water Valve V14, condensation water booster pump
Inlet valve V15, condensation water booster pump flowing water Valve V16 and condensed water precision processing system flowing water Valve V17
It is in opening, and cation bed water inlet boosting valve V03, cation bed recirculation (egr) valve V05, cation bed bypass valve
Door V06, mixed bed water inlet boosting valve V08, mixed bed recirculation (egr) valve V10, filter bypass valve V11,
Filter water inlet boosting valve V13 and condensed water precision processing system bypass valve V18 is closed.
During condensed water precision processing system is in stoppage in transit pattern, due to preposition cation bed 1 and high flow rate mixed bed 4
Condensation water in ion-exchange unit is chronically at resting state (generally higher than a week), in resin absorption from
Son has precipitation, and when causing preposition cation bed 1, high flow rate mixed bed 4 initial launch, effluent quality is defective, therefore exists
Condensed water precision processing system needs when putting into operation preposition cation bed, high flow rate mixed bed 4 by platform recirculation, treats
After all devices effluent quality is the most qualified, just can open system flowing water Valve, completion system puts into operation.Additionally,
Every preposition cation bed 1, high flow rate mixed bed 4 and post-filter 7 are required to a boost process when putting into operation.
Therefore, when condensing water water quality and occurring abnormal, condensed water precision processing system is completely transformed into fortune by the pattern of stoppage in transit
Row mode needs the time of about 2.5 hours.
During realizing the present invention, the inventors discovered that in prior art and at least there is problems in that now
The startup method required time that some condensed water precision processing systems are transferred to operational mode by the pattern of stoppage in transit is longer, when
Condense water water quality exception time, condensed water precision processing system can not quickly start to condense water purify.
Summary of the invention
In order to solve above-mentioned technical problem, the present invention provides a kind of when condensing water water quality exception, condenses water
Precision processing system can rapidly enter the condensed water precision processing system of operational mode and start method.
Specifically, including following technical scheme:
A kind of nuclear power station condensation water precision processing system quick start method: said method comprising the steps of:
Step 1, described condensed water precision processing system is made to enter the first hot standby mode or the second stand-by heat mould
Formula；
Described first hot standby mode is: in described condensed water precision processing system, condensed water precision processing system enters
Penstock is in opening, and condensed water precision processing system flowing water Valve is closed, preposition cation bed,
High flow rate mixed bed and post-filter are in running status, condense water booster pump and are in stoppage in transit state, condense water
Described condensed water precision processing system remains static；
Described second hot standby mode is: in described condensed water precision processing system, condensed water precision processing system enters
Penstock is in opening, and condensed water precision processing system flowing water Valve is closed, preposition cation bed,
High flow rate mixed bed, post-filter and condensation water booster pump are in running status, by condensed water precision processing system
Road pipeline is in connected state, condenses water by described condensed water precision processing system by-pass line in described condensation
Crystal's processing system circulates；
Step 2, when described condensed water precision processing system is in the first hot standby mode, described solidifying by starting
Bear water booster pump and open condensed water precision processing system flowing water Valve, making described condensed water precision processing system enter
Operational mode；
When described condensed water precision processing system is in the second hot standby mode, by opening described condensate fine
Processing system flowing water Valve and disconnect condensed water precision processing system by-pass line, makes described condensate polishing treatment
System transfers operational mode to；
Described operational mode is: in described condensed water precision processing system, described preposition cation bed, high flow rate mixed bed,
Post-filter and condensation water booster pump are in running status, condense water by described condensate polishing treatment system
System flowing water Valve exports to condensate system by-pass line.
Further, further comprise the steps of: described condensed water precision processing system by the pattern of stopping transport before step 1
Enter operational mode；Described stoppage in transit pattern is: in described condensed water precision processing system, described preposition cation bed,
High flow rate mixed bed, post-filter and condensation water booster pump are in stoppage in transit state；Condense water and do not enter described solidifying
Bear water precision processing system；In step 1, described condensed water precision processing system is made to be entered the first heat by operational mode
Standby mode or the second hot standby mode.
Specifically, in step 1, by closing condensed water precision processing system flowing water Valve and condensation water of stopping transport
Booster pump makes described condensed water precision processing system be transferred to the first hot standby mode by operational mode.
Specifically, in step 1, by closing condensed water precision processing system flowing water Valve and opening condensate fine
Processing system bypass valve makes described condensed water precision processing system be transferred to the second hot standby mode by operational mode.
Further, described condensed water precision processing system is transferred to by the pattern of stoppage in transit the concrete steps of operational mode
For: open condensed water precision processing system inlet valve, make condensation water enter described condensed water precision processing system；
Then open cation bed water inlet boosting valve, after the pressure differential of cation bed inlet valve both sides is qualified, close cation bed
Water inlet boosting valve, opens cation bed inlet valve and cation bed recirculation (egr) valve, makes cation bed recirculation pump start；
After the effluent quality of preposition cation bed is qualified, closes cation bed recirculation (egr) valve, open cation bed flowing water Valve, make
Preposition cation bed puts into operation；Open mixed bed water inlet boosting valve, when the pressure differential of mixed bed inlet valve both sides is closed
After lattice, close mixed bed water inlet boosting valve, open mixed bed inlet valve and mixed bed recirculation (egr) valve, make to mix
Bed recirculation pump starts；After the effluent quality of high flow rate mixed bed is qualified, closes mixed bed recirculation (egr) valve, open
Mixed bed flowing water Valve, makes high flow rate mixed bed put into operation；Opened filter water inlet boosting valve, when filter enters
After the pressure differential of penstock both sides is qualified, close filter water inlet boosting valve, opened filter inlet valve
And filter flowing water Valve, make post-filter put into operation；Open condensation water booster pump inlet valve with
And condense water booster pump flowing water Valve, after making condensation water booster pump put into operation, open condensate polishing treatment system
System flowing water Valve makes described condensed water precision processing system put into operation.
Further, in step 1, when described condensed water precision processing system is in described first hot standby mode
Time, make described condensed water precision processing system be transferred to described by described first hot standby mode every Preset Time
Two hot standby mode.
Specifically, described Preset Time is 1～7 day.
Further, in step 1, when, in described condensed water precision processing system, condensing the quantity of water booster pump
When being more than 2, when described condensed water precision processing system is in the second hot standby mode, only make wherein 1
Platform condenses water booster pump and is in running status；In step 2, it is in the condensation of stoppage in transit state by starting residue
Water booster pump also opens described condensed water precision processing system flowing water Valve, make described condensed water precision processing system by
Described second hot standby mode enters operational mode.
The beneficial effect of the technical scheme that the embodiment of the present invention provides:
In the nuclear power station condensation water precision processing system quick start method that the embodiment of the present invention provides, when condensing water
When water quality is normal, condensed water precision processing system is in the first hot standby mode or the second hot standby mode, when
When condensing water water quality exception, condensed water precision processing system is directly from the first hot standby mode or the second stand-by heat
Pattern enters operational mode, makes condensed water precision processing system put into operation.Due to the first hot standby mode or
In second hot standby mode, preposition cation bed, high flow rate mixed bed, post-filter are in operational mode, therefore from
First hot standby mode or the second hot standby mode put required maximum duration into operation for condensing water booster pump
(opening containing flowing water Valve) starts and the opening time of condensed water precision processing system flowing water Valve；Therefore originally
The time that the startup method of inventive embodiments can make condensed water precision processing system put into operation reach 2 minutes with
In.When condensing water water quality and occurring abnormal, condensed water precision processing system can quickly put into operation, to condensation
Water carries out purified treatment, makes condensation water water quality be promptly restored in normal range, reduce to greatest extent due to
Condense steam generator and the corrosion of secondary circuit miscellaneous equipment that water water quality causes extremely, reduce nuclear power station
Because of the probability of the abnormal unplanned shutdown caused of water quality, ensure nuclear plant safety reliability service, it is to avoid economic damage
Lose.
Accompanying drawing explanation
For the technical scheme being illustrated more clearly that in the embodiment of the present invention, institute in embodiment being described below
The accompanying drawing used is needed to be briefly described, it should be apparent that, the accompanying drawing in describing below is only the present invention
Some embodiments, for those of ordinary skill in the art, on the premise of not paying creative work,
Other accompanying drawing can also be obtained according to these accompanying drawings.
Fig. 1 is condensed water precision processing system stoppage in transit pattern diagram；
Fig. 2 is condensed water precision processing system operational mode schematic diagram；
Condensed water precision processing system the first hot standby mode schematic diagram that Fig. 3 provides for the embodiment of the present invention；
Condensed water precision processing system the second hot standby mode schematic diagram that Fig. 4 provides for the embodiment of the present invention；
In figure, reference represents respectively:
1, preposition cation bed；2, cation bed resin catcher；3, cation bed recirculation pump；
4, high flow rate mixed bed；5, mixed-bed resin catcher；6, mixed bed recirculation pump；
7, post-filter；8, condense water and increase pump；
9, condensate system by-pass line；
10, condensed water precision processing system by-pass line；
11, from the condensation water of condensate system；
12, the condensation water of condensate system it is transmitted back to；
V01, condensed water precision processing system inlet valve；V02, cation bed inlet valve；
V03, cation bed water inlet boosting valve；V04, cation bed flowing water Valve；
V05, cation bed recirculation (egr) valve；V06, cation bed bypass valve；
V07, mixed bed inlet valve；V08, mixed bed water inlet boosting valve；
V09, mixed bed flowing water Valve；V10, mixed bed recirculation (egr) valve；
V11, filter bypass valve；V12, filter inlet valve；
V13, filter water inlet boosting valve；V14, filter flowing water Valve；
V15, condensation water booster pump inlet valve；V16, condensation water booster pump flowing water Valve；
V17, condensed water precision processing system flowing water Valve；V18, condensed water precision processing system bypass valve.
In figure, the direction of arrow represents condensation water flow direction；
In figure, solid black valve represents that this valve is closed；
In figure, white hollow valve represents that this valve is in open mode.
Detailed description of the invention
For making technical scheme and advantage clearer, below in conjunction with accompanying drawing to embodiment party of the present invention
Formula is described in further detail.
The embodiment of the present invention provides a kind of nuclear power station condensation water precision processing system quick start method, and its feature exists
In, said method comprising the steps of:
Step 1, described condensed water precision processing system is made to enter the first hot standby mode or the second stand-by heat mould
Formula；
Described first hot standby mode is: in described condensed water precision processing system, condensed water precision processing system enters
Penstock V01 is in opening, and condensed water precision processing system flowing water Valve V17 is closed, front
Putting cation bed 1, high flow rate mixed bed 4 and post-filter 7 and be in running status, condensation water booster pump 8 is in and stops
Fortune state, condenses water and remains static in described condensed water precision processing system；
Described second hot standby mode is: in described condensed water precision processing system, condensed water precision processing system enters
Penstock V01 is in opening, and condensed water precision processing system flowing water Valve V17 is closed, front
Put cation bed 1, high flow rate mixed bed 4, post-filter 7 and condensation water booster pump 8 and be in running status, condense
Crystal's processing system by-pass line 10 is in connected state, condenses water by by described condensed water precision processing system
Road pipeline 10 circulates in described condensed water precision processing system；
Step 2, when described condensed water precision processing system is in the first hot standby mode, described solidifying by starting
Bear water booster pump 8 and open condensed water precision processing system flowing water Valve V17, making described condensate polishing treatment system
System enters operational mode；
When described condensed water precision processing system is in the second hot standby mode, by opening described condensate fine
Processing system flowing water Valve V17 and disconnect condensed water precision processing system by-pass line 10, makes described condensation water
Precision processing system transfers operational mode to；
Described operational mode is: in described condensed water precision processing system, described preposition cation bed 1, high flow rate mixed bed 4,
Post-filter 7 and condensation water booster pump 8 are in running status, condense water by described condensate fine
Reason system flowing water Valve V17 exports to condensate system by-pass line 9.
In the nuclear power station condensation water precision processing system quick start method that the embodiment of the present invention provides, when condensing water
When water quality is normal, described condensed water precision processing system is in the first hot standby mode or the second hot standby mode,
When condensing water water quality and occurring abnormal, condensed water precision processing system is directly by the first hot standby mode or second
Hot standby mode enters operational mode, carries out purified treatment to condensing water, makes condensation water water quality be promptly restored to
Normal range.Wherein,
When described condensed water precision processing system is in the first hot standby mode, preposition cation bed 1, high flow rate mixed bed 4
And post-filter 7 is in running status, and condenses water booster pump 8 and be in stoppage in transit state.In this pattern
When in lower condensed water precision processing system, the state of each valve is as it is shown on figure 3, preposition cation bed 1 is in running status,
Cation bed inlet valve V02, cation bed flowing water Valve V04 are in opening, and cation bed water inlet boosting valve V03,
Cation bed recirculation (egr) valve V05 and cation bed bypass valve V06 is closed, and preposition cation bed 1
Pressure and effluent quality conformance with standard；When high flow rate mixed bed 4 is in running status, mixed bed inlet valve V07,
Mixed bed flowing water Valve V09 is in opening, and mixed bed water inlet boosting valve V08, mixed bed recirculation (egr) valve
V10 is closed, and the pressure of high flow rate mixed bed 4 and effluent quality conformance with standard；Rearmounted filtration
When device 7 is in running status, filter inlet valve V12, filter flowing water Valve V14 are in unlatching shape
State, filter water inlet boosting valve V13 and filter bypass valve V11 is closed, and after
Put the pressure conformance with standard of filter 7.In the first hot standby mode, although condense water booster pump 8 and be in
Stoppage in transit state, but condense water booster pump inlet valve V15 and be in opening.Due at the first stand-by heat
In pattern, condense water booster pump 8 and be in stoppage in transit state and condensed water precision processing system flowing water Valve V17 pass
Closing, the condensation water hence into described condensed water precision processing system is in static shape at condensed water precision processing system
State, i.e. remains static in preposition cation bed 1, high flow rate mixed bed 4 and post-filter 7.Now, come
Directly condensate system is returned to by condensate system by-pass line 9 from the condensation water 11 of condensate system.When solidifying
When bearing water the condensation water water quality appearance exception of system, then open condensation water booster pump flowing water Valve V16, start
Condense water booster pump 8, then open condensed water precision processing system flowing water Valve V17, make condensate polishing treatment system
System enters operational mode, and now, the condensation water 11 from condensate system enters condensed water precision processing system,
Purifying through preposition cation bed 1, high flow rate mixed bed 4 and post-filter 5, the condensation water after purification is by coagulating
Condensate system is returned to after bearing water precision processing system flowing water Valve V17 output.
When described condensed water precision processing system is in the second hot standby mode, preposition cation bed 1, high flow rate mixed bed 4
Post-filter 7 and condensation water booster pump 8 are in running status.Condensate polishing treatment in such a mode
In system, the state of each valve is as shown in Figure 4, and condensed water precision processing system inlet valve V01, cation bed are intake
Valve V02, cation bed flowing water Valve V04, mixed bed inlet valve V07, mixed bed flowing water Valve V09, filter
Inlet valve V12, filter flowing water Valve V14, condensation water booster pump inlet valve V15, condensation water supercharging
Pump out penstock V16 and condensed water precision processing system bypass valve V18 and be in opening；Cation bed is intake
Boosting valve V03, cation bed recirculation (egr) valve V05, cation bed bypass valve V06, mixed bed water inlet boosting valve
V08, mixed bed recirculation (egr) valve V10, filter bypass valve V11, filter water inlet boosting valve V13
And condensed water precision processing system flowing water Valve V17 is closed.In the second hot standby mode, solidifying
Bear water and circulated in described condensed water precision processing system by condensed water precision processing system by-pass line 10.
Now, the condensation water 11 from condensate system directly is returned to condense water system by condensate system by-pass line 9
System.When the condensation water water quality of condensate system occurs abnormal, then open condensed water precision processing system outlet valve
Door V17 and close condensed water precision processing system bypass valve 18, makes condensed water precision processing system enter and runs
Pattern, now, the condensation water 11 from condensate system enters condensed water precision processing system, through preposition sun
Bed 1, high flow rate mixed bed 4 and post-filter 5 purify, and the condensation water after purification is by condensate polishing treatment
Condensate system is returned to after system flowing water Valve V17 output.
By foregoing it can be seen that condensed water precision processing system puts into operation institute from the first hot standby mode
Take time as condensing opening of water booster pump flowing water Valve V16 and condensed water precision processing system flowing water Valve V17
Open the time, be condensed water precision processing system flowing water Valve V17 from the second hot standby mode required time that puts into operation
Opening time, therefore the startup method of the embodiment of the present invention can make condensed water precision processing system put into operation
Time reach 2 minutes within.When condensing water water quality and occurring abnormal, condensed water precision processing system can be fast
Speed puts into operation, reduces the steam generator and two times caused owing to condensation water water quality is abnormal to greatest extent
The corrosion of road miscellaneous equipment, reduces nuclear power station because of the probability of the abnormal unplanned shutdown caused of water quality, guarantee
Nuclear plant safety reliability service, it is to avoid economic loss.
According to EPRI directive/guide, when nuclear power station secondary loop condenses water water quality exception, if water quality exceedes action level
Other 2, nuclear power station unit need to reduce power immediately to power plant's prescribed level (typically from about 30%)；Water quality surpasses
Cross action rank 3, it should perform < 5% Power operation and it needs to the degree of the corrosion caused according to impurity provides
Maintain steam generator to run under thermal condition or enter and cold close down judgement.Therefore, water is condensed at secondary circuit
When water quality occurs abnormal, condensed water precision processing system quickly puts into operation, and water quality index can be made to go up rapidly,
Avoid unit downrating, even can avoid the abnormal shutdown of unit.
For in terms of downrating, the time that existing condensed water precision processing system puts into operation is about 2.5
Hour, in these 2.5 hours, nuclear power station unit must downrating.And embodiment of the present invention offer is fast
The time that fast startup method can make condensed water precision processing system put into operation, unit was almost within 2 minutes
Need not downrating, as a example by the power reducing by 30%, unit fall power can be avoided to bring for 2.5 hours
Economic benefit is: 1250MWe × 70% × 1000KW/MWe × 0.289 yuan/KWh (station-service electricity price) ×
2.5h/10000=63.2 ten thousand yuan.If secondary circuit condenses water water quality exceedes action rank 3, condensate polishing treatment system
Quickly putting into operation of system may avoid a unplanned shutdown of unit, and now economic benefit will reach thousands of
Wan Yuan.
In above-mentioned quick start method, after condensation water quality recovery is normal, then close at condensate fine
Reason system flowing water Valve V17 and condensation water booster pump flowing water Valve V16, makes condensation water booster pump 8 be in
Stoppage in transit state, makes condensed water precision processing system be transferred to the first hot standby mode by operational mode, or closes solidifying
Bear water precision processing system flowing water Valve V17, open condensed water precision processing system bypass valve V18 and make condensation water
Precision processing system is transferred to the second hot standby mode by operational mode.
In above-mentioned quick start method, at the nuclear power station unit starting initial stage, at condensed water precision processing system
At stoppage in transit pattern, the most preposition cation bed 1, high flow rate mixed bed 4, post-filter 7 and condensation water booster pump 8
In stoppage in transit state, condense water and do not enter described condensed water precision processing system.Before carrying out step 1, need
First transferred condensed water precision processing system to operational mode by the pattern of stoppage in transit, treat that condensed water precision processing system runs steady
After condensation water water quality fixed, output is qualified, then by close condensed water precision processing system flowing water Valve V17 and
Condense water booster pump flowing water Valve V16, make condensation water booster pump 8 stop transport, make described condensate polishing treatment system
System is transferred to the first hot standby mode by operational mode；Or by closing condensed water precision processing system flowing water Valve
V17 also opens condensed water precision processing system bypass valve V18 and makes described condensed water precision processing system by running mould
Formula transfers the second hot standby mode to.Wherein, the pattern of stoppage in transit described condensed water precision processing system is transferred to operation
Concretely comprising the following steps of pattern:
First put into operation preposition cation bed 1: opens condensed water precision processing system inlet valve V01, makes condensation water enter
Described condensed water precision processing system；Then cation bed water inlet boosting valve V03 is opened, as cation bed inlet valve V02
After the pressure differential of both sides is qualified, close cation bed water inlet boosting valve V03, open cation bed inlet valve V02 with
And cation bed recirculation (egr) valve V05, make cation bed recirculation pump 3 start；When the effluent quality of preposition cation bed 1 closes
After lattice, close cation bed recirculation (egr) valve V05, open cation bed flowing water Valve V04, make preposition cation bed 1 put into
Run；If in condensed water precision processing system, the quantity of preposition cation bed 1 is more than 2, then every preposition sun
Bed 1 is transferred to running status according to above-mentioned steps by the state of stoppage in transit successively.
After preposition cation bed 1 puts into operation, put into operation high flow rate mixed bed 4: opens mixed bed water inlet boosting valve V08, when
After the pressure differential of mixed bed inlet valve V07 both sides is qualified, closes mixed bed water inlet boosting valve V08, open mixed
Bed inlet valve V07 and mixed bed recirculation (egr) valve V10, makes mixed bed recirculation pump 6 start；When the most mixed
Bed 4 effluent quality qualified after, close mixed bed recirculation (egr) valve V10, open mixed bed flowing water Valve V09,
High flow rate mixed bed 4 is made to put into operation；Similarly, if the quantity of condensed water precision processing system high speed mixed bed 4
More than 2, then every high flow rate mixed bed 4 is transferred to running status according to above-mentioned steps by the state of stoppage in transit successively.
Then put into operation post-filter 7: opened filter water inlet boosting valve V13, when filter inlet valve
After the pressure differential of V12 both sides is qualified, close filter water inlet boosting valve V08, opened filter water intaking valve
Door V12 and filter flowing water Valve V14, makes post-filter 7 put into operation；Similarly, if coagulated
Bear water in precision processing system that the quantity of post-filter 7 is more than 2, then every post-filter 7 is successively
Transferred to running status by the state of stoppage in transit according to above-mentioned steps.
Finally, open condensation water booster pump inlet valve V15 and condense water booster pump flowing water Valve V16,
After making condensation water booster pump 8 put into operation, open condensed water precision processing system flowing water Valve V17 and make described solidifying
Bear water precision processing system to put into operation.
In above-mentioned quick start method, if condensed water precision processing system is chronically at the first stand-by heat mould
Formula, owing to the condensation water in condensed water precision processing system remains static for a long time, preposition cation bed 1, at a high speed
In mixed bed 4 and accordingly cation bed resin catcher 2, mixed-bed resin catcher 3, the ion of resin absorption can be analysed
Go out, after being transferred to operational mode by the first hot standby mode, be then difficult to the condensation water to water quality is abnormal and carry out only
Change.Compared with the first hot standby mode, the second hot standby mode is more preferably hot standby mode, but,
Higher owing to condensing energy consumption when water booster pump 8 runs, increase operating cost, if therefore at condensate fine
Reason system is chronically at the second hot standby mode, can increase the energy consumption of nuclear power station unit.Therefore, it can every
Preset Time makes described condensed water precision processing system be transferred to described second stand-by heat by described first hot standby mode
Pattern, makes the condensation water in condensed water precision processing system carry out circulation in once, the most both can reduce energy consumption,
The effluent quality that can make again preposition cation bed 1 and high flow rate mixed bed 2 remains qualified.According to actual motion
Experience, is transferred to described every condensed water precision processing system described in 1～7 angels by described first hot standby mode
Two hot standby mode, condensed water precision processing system be in the time of the second hot standby mode be 10～15 minutes i.e.
Requirement can be met.The process being transferred to the second hot standby mode by the first hot standby mode is: opens condensation water and increases
Press pump flowing water Valve V16 and condensed water precision processing system bypass valve V18.In condensing water and carrying out once
After circulation, close and condense water booster pump flowing water Valve V16 and condensed water precision processing system bypass valve
V18, makes condensed water precision processing system return to the first hot standby mode.
In above-mentioned quick start method, owing to, in the second hot standby mode, condensing water booster pump 8
Effect is to maintain to condense the water interior circulation in condensed water precision processing system, therefore condenses the number of water booster pump 8
When amount is more than 2, when the second hot standby mode, it is not necessary to all of condensation water booster pump 8 all in
Running status, only needs a part to condense water booster pump 8 and is in running status, such as, can only have one
Condense water booster pump 8 and be in running status.So can either maintain condensation water in condensed water precision processing system
Interior circulation, can reduce again energy consumption, save the energy.Operation mould is transferred to accordingly by the second hot standby mode
During formula, it is in the condensation water booster pump 8 of stoppage in transit state by starting residue and opens condensed water precision processing system
Flowing water Valve V17, makes described condensed water precision processing system enter operational mode.
Below with preposition cation bed 1, high flow rate mixed bed 2, post-filter 7 and the quantity condensing water booster pump 8
As a example by being 2, (wherein, 2 condense water booster pump 8 when condensed water precision processing system is in operational mode
All put into operation, do not include stand-by pump), the condensed water precision processing system providing the embodiment of the present invention quickly opens
Dynamic method is described further.
See Fig. 1～4, when preposition cation bed 1, high flow rate mixed bed 2, post-filter 7 and condensation water booster pump
When the quantity of 8 is 2, the quick start method of condensed water precision processing system comprises the following steps:
Step (a), during nuclear power station unit starting, opens condensed water precision processing system inlet valve V01, depends on
Secondary make preposition cation bed 1, high flow rate mixed bed 4, post-filter 7 and condense water booster pump 8 put into operation, so
After open condensed water precision processing system flowing water Valve V17, make condensed water precision processing system be transferred to by the pattern of stoppage in transit
Operational mode；
Step (b), after unit condensation water water quality is qualified, closes condensed water precision processing system inlet valve V17
And all condensation water booster pump flowing water Valve V16, make condensed water precision processing system be transferred to by operational mode
One hot standby mode；Every 7 days, start one and condense water booster pump 8 chain unlatching condensation water booster pump
Flowing water Valve V16, opens condensed water precision processing system bypass valve V18, make condensed water precision processing system by
First hot standby mode transfers the second hot standby mode to, utilizes condensed water precision processing system by-pass line 10 to make to coagulate
The condensation water born water in precision processing system carries out interior circulation.After completing once to circulate, close and condense water booster pump
And chain closedown condenses water booster pump flowing water Valve V16, close condensed water precision processing system bypass valve V18,
Condensed water precision processing system is made to be returned to the first hot standby mode by the second hot standby mode；
Step (c), when nuclear power station secondary loop condenses water water quality exception, starts all condensation water booster pumps also
Chain unlatching condenses water booster pump flowing water Valve V16, then opens condensed water precision processing system flowing water Valve
V17, makes condensed water precision processing system enter operational mode.From the condensation water 11 of condensate system through front
After putting the purification of cation bed 1, high flow rate mixed bed 4 and post-filter 7, it is transmitted back to condensate system；
Step (d), when nuclear power station secondary loop condensation water water quality is after purifying and recovering normally, closes condensation water
Precision processing system flowing water Valve V17, stop transport all condensation water booster pumps 8 chain closedown condensation water booster pump
Flowing water Valve V16, makes condensed water precision processing system return to the first hot standby mode.
When nuclear power station secondary loop condensation water water quality occurs abnormal again.Repeat step (c)～(d).
To sum up, embodiments provide a kind of nuclear power station condensation water precision processing system quick start method,
When condensing water water quality and being normal, condensed water precision processing system is in the first hot standby mode or the second stand-by heat
Pattern, when condensing water water quality exception, condensed water precision processing system is directly from the first hot standby mode or the
Two hot standby mode enter operational mode, make condensed water precision processing system put into operation within 2 minutes, right
Condense water and carry out purified treatment, make condensation water water quality recover rapidly normal, reduce to greatest extent owing to condensing
Water water quality is abnormal and causes steam generator and the corrosion of secondary circuit miscellaneous equipment, reduce nuclear power station because of water quality
The probability of the unplanned shutdown extremely caused, ensures nuclear plant safety reliability service, it is to avoid economic loss.
The above is for only for ease of those skilled in the art and understands technical scheme, and need not
To limit the present invention.All within the spirit and principles in the present invention, any amendment of being made, equivalent,
Improve, should be included within the scope of the present invention.
Claims (8)
1. a nuclear power station condensation water precision processing system quick start method, it is characterised in that described method bag
Include following steps:
Step 1, described condensed water precision processing system is made to enter the first hot standby mode or the second stand-by heat mould
Formula；
Described first hot standby mode is: in described condensed water precision processing system, condensed water precision processing system enters
Penstock (V01) is in opening, and condensed water precision processing system flowing water Valve (V17) is in closedown shape
State, preposition cation bed (1), high flow rate mixed bed (4) and post-filter (7) are in running status, condense
Water booster pump (8) is in stoppage in transit state, condenses water and remains static in described condensed water precision processing system；
Described second hot standby mode is: in described condensed water precision processing system, condensed water precision processing system enters
Penstock (V01) is in opening, and condensed water precision processing system flowing water Valve (V17) is in closedown shape
State, preposition cation bed (1), high flow rate mixed bed (4), post-filter (7) and condensation water booster pump (8)
Being in running status, condensed water precision processing system by-pass line (10) is in connected state, condenses water and passes through
Described condensed water precision processing system by-pass line (10) circulates in described condensed water precision processing system；
Step 2, when described condensed water precision processing system is in the first hot standby mode, described solidifying by starting
Bear water booster pump (8) and open condensed water precision processing system flowing water Valve (V17), making at described condensate fine
Reason system enters operational mode；
When described condensed water precision processing system is in the second hot standby mode, by opening described condensate fine
Processing system flowing water Valve (V17) and disconnect condensed water precision processing system by-pass line (10), makes described
Condensed water precision processing system transfers operational mode to；
Described operational mode is: in described condensed water precision processing system, and described preposition cation bed (1), high speed are mixed
Bed (4), post-filter (7) and condensation water booster pump (8) are in running status, condense water and pass through
Described condensed water precision processing system flowing water Valve (V17) exports to condensate system by-pass line (9).
Quick start method the most according to claim 1, it is characterised in that also include before step 1
Step:
Described condensed water precision processing system is entered operational mode by pattern of stopping transport；
Described stoppage in transit pattern is: in described condensed water precision processing system, and described preposition cation bed (1), high speed are mixed
Bed (4), post-filter (7) and condensation water booster pump (8) are in stoppage in transit state；Condense water not enter
Enter described condensed water precision processing system；
In step 1, make described condensed water precision processing system by operational mode enter the first hot standby mode or
Second hot standby mode.
Quick start method the most according to claim 2, it is characterised in that
In step 1, increase by closing condensed water precision processing system flowing water Valve (V17) and condensation water of stopping transport
Press pump (8) makes described condensed water precision processing system be transferred to the first hot standby mode by operational mode.
Quick start method the most according to claim 2, it is characterised in that
In step 1, by closing condensed water precision processing system flowing water Valve (V17) and opening at condensate fine
Reason system bypass valve (V18) makes described condensed water precision processing system be transferred to the second stand-by heat mould by operational mode
Formula.
Quick start method the most according to claim 2, it is characterised in that at described condensate fine
Reason system is transferred to concretely comprising the following steps of operational mode by the pattern of stoppage in transit:
Open condensed water precision processing system inlet valve (V01), make condensation water enter described condensate polishing treatment
System；Then cation bed water inlet boosting valve (V03) is opened, when the pressure of cation bed inlet valve (V02) both sides
Power difference qualified after, close cation bed water inlet boosting valve (V03), open cation bed inlet valve (V02) and
Cation bed recirculation (egr) valve (V05), makes cation bed recirculation pump (3) start；Water outlet when preposition cation bed (1)
After water quality is qualified, closes cation bed recirculation (egr) valve (V05), open cation bed flowing water Valve (V04), make preposition
Cation bed (1) puts into operation；
Open mixed bed water inlet boosting valve (V08), when the pressure differential of mixed bed inlet valve (V07) both sides is closed
After lattice, close mixed bed water inlet boosting valve (V08), open mixed bed inlet valve (V07) and mixed bed again
Circulation valve (V10), makes mixed bed recirculation pump (6) start；When the effluent quality of high flow rate mixed bed (4) closes
After lattice, close mixed bed recirculation (egr) valve (V10), open mixed bed flowing water Valve (V09), make high flow rate mixed bed (4)
Put into operation；
Opened filter water inlet boosting valve (V13), when the pressure of filter inlet valve (V12) both sides
Difference qualified after, close filter water inlet boosting valve (V13), opened filter inlet valve (V12) with
And filter flowing water Valve (V14), make post-filter (7) put into operation；
Open condensation water booster pump inlet valve (V15) and condense water booster pump flowing water Valve (V16),
After making condensation water booster pump (8) put into operation, open condensed water precision processing system flowing water Valve (V17) and make
Described condensed water precision processing system puts into operation.
Quick start method the most according to claim 1, it is characterised in that in step 1, when described
When condensed water precision processing system is in described first hot standby mode, make described condensate fine every Preset Time
Processing system is transferred to described second hot standby mode by described first hot standby mode.
Quick start method the most according to claim 6, it is characterised in that described Preset Time is 1～7
My god.
Quick start method the most according to claim 1, it is characterised in that in step 1, when described
In condensed water precision processing system, when the quantity of condensation water booster pump (8) is more than 2, when described condensation water
When precision processing system is in the second hot standby mode, wherein 1 condensation water booster pump (8) is only made to be in operation
State；
In step 2, it is in condensation water booster pump (8) of stoppage in transit state by starting residue and opens described solidifying
Bear water precision processing system flowing water Valve (V17), make described condensed water precision processing system by described second stand-by heat
Pattern enters operational mode.
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| CN106830186B (en) * | 2017-02-13 | 2020-05-22 | 江苏核电有限公司 | Process for running condensate polishing system |
| CN111732219B (en) * | 2020-03-31 | 2021-11-09 | 江苏核电有限公司 | Control method for bypass multi-mode operation of condensate polishing system |
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| KR100691962B1 (en) * | 2005-12-30 | 2007-03-09 | 황덕흥 | Treatment Facilities and Method of Organic Carbon and Nitrogen in CPP Regeneration Wastewater |
| CN200992513Y (en) * | 2006-12-26 | 2007-12-19 | 北京中电加美环境工程技术有限责任公司 | Condensate polishing separation bed device |
| CN102161542B (en) * | 2011-03-14 | 2012-12-26 | 华电水务工程有限公司 | Method and device for precisely processing nuclear power station condensation water |
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