CN108665982A - A kind of pipeline system and its verification method that the spray of nuclear power station safety injection peace is spare each other - Google Patents
A kind of pipeline system and its verification method that the spray of nuclear power station safety injection peace is spare each other Download PDFInfo
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- CN108665982A CN108665982A CN201810373900.9A CN201810373900A CN108665982A CN 108665982 A CN108665982 A CN 108665982A CN 201810373900 A CN201810373900 A CN 201810373900A CN 108665982 A CN108665982 A CN 108665982A
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- G—PHYSICS
- G21—NUCLEAR PHYSICS; NUCLEAR ENGINEERING
- G21C—NUCLEAR REACTORS
- G21C15/00—Cooling arrangements within the pressure vessel containing the core; Selection of specific coolants
- G21C15/18—Emergency cooling arrangements; Removing shut-down heat
- G21C15/182—Emergency cooling arrangements; Removing shut-down heat comprising powered means, e.g. pumps
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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 discloses a kind of nuclear power station safety injection peaces to spray pipeline system spare each other, including at least one set of H4 pipelines being connected between safety injection system and containment spray system, every group of H4 pipeline include：First connecting pipeline, on the outlet line of containment spray pump, the other end is communicated on the outlet line of low pressure safety injection pump for one end connection；Second connecting pipeline, one end is communicated on the outlet line of the container spray heat exchanger in the containment spray pump downstream, the other end is communicated on the outlet downstream pipeline of the low pressure safety injection pump, and is located at the upstream of high-pressure safety injection tie point with the tie point on the downstream line of the low pressure safety injection pump；Container spray pump return line, one end are communicated on the outlet downstream pipeline of the container spray heat exchanger, and one end is communicated on the suction line of the containment spray pump.In addition, the present invention also provides a kind of test methods for pacifying spray pipeline system spare each other based on above-mentioned nuclear power station safety injection.
Description
Technical field
The present invention relates to nuclear power station running technology fields, and in particular to a kind of pipeline that the spray of nuclear power station safety injection peace is spare each other
System and its verification method.
Background technology
Long periods (after accident occurs 15 days) after coolant loss accident, two low pressure safety injection pumps or two peace sprays
Under the operating mode for pumping failure, safety injection pump may be implemented and peace spray pump is spare each other, and maintain to reactor core function of injecting.Corresponding operating mode
It is known respectively as " H4 operating modes " and " H4 regulations " with operating standard.
In the prior art, H4 pipelines include two pipelines in each safety series, as shown in Figure 1, wherein one from
The outlet of peace spray heat exchanger is connected to the entrance of low pressure safety injection pump, and another is the by-pass line (not shown) for pacifying spray pump,
These pipelines can be utilized to connect peace note, spray system.However, existing H4 pipelines are just permitted after two weeks in accident generation
Permitted to come into operation, therefore be only used at a specified future date mutually standby, does not have urgent mutually standby function substantially；Due to flow and layout design
Reason needs operator to carry out water-filling exhaust to high radioactivity pipeline at the scene before enabling H4 pipelines, and personnel are larger by irradiation risk；
Low pressure safety injection pump may be run under too low flow for a long time, unfavorable to the reliability of apparatus body；Flow velocity in H4 pipelines is inclined
There is the risk for inducing Flow vibration in height.
Therefore it provides a kind of peace note peace sprays pipeline system spare each other, to ensure that Safety Injection/container spray can be fast
Speed realization is spare, and the quick back-up safety injection pump of containment spray pump may be implemented and carry out cold section of injection, enhance accident operation
The reliability of period, and ensure the safe and reliable operation of nuclear power generating sets, and nuclear power station economic benefit is promoted, it is current nuclear power station
Urgent problem to be solved.
Invention content
The present invention for peace note peace in the prior art spray spare each other H4 pipelines do not have substantially urgent mutually standby function,
By irradiation risk, larger, low pressure safety injection pump leads to equipment to operator due to being run under too low flow for a long time before enabling H4 pipelines
The reliability of ontology is not high and H4 pipelines in flow velocity it is higher, there are problems that inducing the risk of Flow vibration, one kind be provided
It is spare to ensure that Safety Injection/container spray can be realized rapidly, the quick back-up safety of containment spray pump may be implemented for H4 pipelines
Injection pump carries out cold section of injection, enhances the reliability during accident operation, and ensure the safe and reliable operation of nuclear power generating sets,
And promote nuclear power station economic benefit.
The present invention provides a kind of nuclear power station safety injection peaces to spray pipeline system spare each other, including at least one set is connected to peace
H4 pipelines between injected system and containment spray system entirely, which is characterized in that every group of H4 pipeline include：
First connecting pipeline, on the outlet line of containment spray pump, the other end is communicated in low pressure peace note for one end connection
On the outlet line of pump, for making the medium of safety injection system flow into containment spray system to be sprayed；
Second connecting pipeline, one end are communicated in going out for the container spray heat exchanger positioned at the containment spray pump downstream
On mouthful pipeline, the other end is communicated on the outlet downstream pipeline of the low pressure safety injection pump, and with the downstream of the low pressure safety injection pump
Tie point on pipeline is located at the upstream of high-pressure safety injection tie point, for making the medium of containment spray system flow into Safety Injection
System is to carry out cold section of injection；
Container spray pump return line, one end are communicated on the outlet downstream pipeline of the container spray heat exchanger,
One end is communicated on the suction line of the containment spray pump, for making the medium of containment spray system flow back；
First connecting pipeline (1), the second connecting pipeline (2) and the container spray pump return line (3) are used
It is spare each other when alloing Safety Injection pump and containment spray pump in accident mitigation.
Preferably, each nuclear power station safety injection peace is sprayed is both provided with isolation valve module on pipeline system spare each other,
In the safety injection system and containment spray system normal operation, water, and institute are each filled in each H4 pipelines
It states isolation valve module and is in closed state, so that the safety injection system and containment spray system are mutually isolated.
Preferably, including two groups are connected to the safety injection system and container spray systems that identical A row and B are arranged
H4 pipelines between system, so that the Safety Injection pump and containment spray pump of A row and B row can respectively each other in accident mitigation
It is spare.
Pipeline system spare each other is sprayed based on nuclear power station safety injection described in claim 1 peace the present invention also provides a kind of
Verification method, verify peace note peace using multiple operating condition of test and spray active redundancy pipeline system each other, the multiple operating condition of test
Including：The spare low pressure safety injection pump operating mode of container spray flow operating condition, containment spray pump, low pressure safety injection pump back-up safety
Shell spray pump sprays operating mode, two row low pressure safety injection pumps utilize cold section of injection operating mode of container spray heat exchanger.
Preferably, the container spray flow operating condition includes the container spray flow operation work of A row and B row
Condition；
The spare low pressure safety injection pump operating mode of containment spray pump includes one cold section of injection operating mode, supercharging B row high pressure peace
Cold section of injection operating mode of note pump and cold section of the high-pressure safety injection pump injection operating mode of supercharging two；
The low pressure safety injection pump back-up safety shell spray pump spray operating mode includes directly spraying operating mode and recycling spray work
Condition.
Preferably, when verifying the container spray flow operating condition that the A row or B are arranged, the specific steps are：Make reactor
The container spray is flow to the medium in Spent Fuel Pool cooling and processing water tank by the containment spray pump to exchange heat
Then device flows back to the reactor and Spent Fuel Pool cooling and processing water tank by the container spray pump return line,
Verify the containment spray pump whether normal operation.
Preferably, when verifying the cold section of injection operating mode, the specific steps are：Select the peace of the lower row of lift in A row and B row
Full shell spray pump, makes the medium in nuclear island melt pit flow to the container spray heat exchanger by the containment spray pump, so
Certain media flow to reactor pressure vessel by second connecting pipeline afterwards, and another part medium is sprayed by the containment
Leaching pump return line flows back to the nuclear island melt pit, verifies whether cold section of injection flow meets the requirement of heap work.
Preferably, when verifying cold section of the high-pressure safety injection pump of the supercharging B row one injection operating mode, the specific steps are：Select A row
The lower high-pressure safety injection pump of lift during the containment spray pump of the lower row of lift and B are arranged in being arranged with B, makes reactor and spentnuclear fuel
Medium in pond cooling and processing water tank flow to the container spray heat exchanger by the containment spray pump, then portion
Medium is divided to flow to reactor pressure vessel by second connecting pipeline, lift is lower during certain media is arranged by the B
High-pressure safety injection pump flow to the reactor pressure vessel, and another part medium is flowed back to by the container spray pump return line
The reactor and Spent Fuel Pool cooling and processing water tank, verify whether cold section of injection flow meets the requirement of heap work.
Preferably, when verifying cold section of the high-pressure safety injection pump of the supercharging two injection operating mode, the specific steps are：Select A row and B
The higher high-pressure safety injection pump of lift in the high-pressure safety injection pump and B row of the containment spray pump, A row that lift higher arranges in row, makes
Medium in reactor and Spent Fuel Pool cooling and processing water tank flow to the containment by the containment spray pump and sprays
Heat exchanger is drenched, then certain media flow to reactor pressure vessel by second connecting pipeline, and certain media passes through the A
The high-pressure safety injection pump of row flow to reactor pressure vessel, the higher high-pressure safety injection pump stream of lift during certain media is arranged by the B
To the reactor pressure vessel, another part medium by the container spray pump return line flow back to the reactor and
Spent Fuel Pool is cooling and whether processing water tank, cold section of injection flow of verification meet the requirement of heap work.
Preferably, when verifying the directly spray operating mode, the specific steps are：Select the institute of the lower row of lift in A row and B row
State low pressure safety injection pump, the medium in keeping reactor and Spent Fuel Pool cooling and processing water tank flow through the low pressure safety injection pump it
Afterwards, the reactor and Spent Fuel Pool cooling and processing water tank are directly flowed back in part, partly pass through first connecting pipeline
It flows through the container spray heat exchanger and flow to A row sprays, the nuclear island melt pit, another part stream are flow to using B row sprays
To cold section of A row low pressure peace note, whether the spray flow meets the requirement of heap work during verifying directly spray.
Preferably, when verifying the recycling spray operating mode, the specific steps are：Select the lower row of lift in A row and B row
The low pressure safety injection pump, make the medium in nuclear island melt pit by the low pressure safety injection pump after, certain media directly flows back to the core
Island melt pit, certain media flow through the container spray heat exchanger by first connecting pipeline and flow to A row sprays, using
B row sprays flow to the nuclear island melt pit, and another part flow to cold section of A row low pressure peace note, verifies the spray during recycling spray
Whether leaching flow meets the requirement of heap work.
Preferably, the two row low pressure safety injection pump is verified using cold section of injection operating mode of container spray heat exchanger, specific step
Suddenly it is：The lower high-pressure safety injection pump of lift in B row is selected, makes to answer Jie in heap and Spent Fuel Pool cooling and processing water tank
For matter by the low pressure safety injection pump in A row, the first connecting pipeline during then certain media is arranged by the A flows through the peace
Full shell spray heat exchanger, then pipeline is flowed to the downstream by second connecting pipeline, another part medium is directly through downstream tube
Line, after two parts medium converges, certain media is flowed directly to reactor pressure vessel, during another part medium is arranged by A
The high-pressure safety injection pump flow to reactor pressure vessel；
Make to answer the low pressure that the medium in heap and Spent Fuel Pool cooling and processing water tank passes through during B is arranged to pacify note simultaneously
Pump, the first connecting pipeline during then certain media is arranged by the B flow through the container spray heat exchanger, then by described
Second connecting pipeline flows to the downstream pipeline, and another part medium is directly through downstream line, after two parts medium converges, part
Medium arranged by A in the high-pressure safety injection pump reactor pressure vessel, the lower height of lift during certain media is arranged by B
Pressure safety injection pump flow to the reactor pressure vessel, another part medium flows directly into the reactor pressure vessel, verify into
Cold section of injection period of row, it injected whether flow meets the requirement of heap work.
One or more technical solution provided by the invention, has the following technical effect that：H4 pipelines provided by the invention are protected
Card Safety Injection/container spray can realize rapidly it is spare, may be implemented the quick back-up safety injection pump of containment spray pump into
Cold section of injection of row, enhances the reliability during accident operation, and ensure the safe and reliable operation of nuclear power generating sets, and promote core
Power station economic benefit；Test method provided by the invention based on the H4 pipelines is ensuring that all nuclear safety criterions are verified
While, debugging critical path is optimized, H4 is shortened and improves the item debugging duration, and ensure that nuclear safety criterion obtains more
Conservative verification.
Description of the drawings
To describe the technical solutions in the embodiments of the present invention more clearly, make required in being described below to embodiment
Attached drawing is briefly described, it should be apparent that, drawings in the following description are only some embodiments of the invention, for
For those of ordinary skill in the art, without creative efforts, other are can also be obtained according to these attached drawings
Attached drawing.
Fig. 1 is that peace note peace sprays pipeline system configuration schematic diagram spare each other in the prior art one；
Fig. 2 is that peace note peace sprays pipeline system configuration schematic diagram spare each other in the embodiment of the present invention one；
Fig. 3 is verification A row container spray flow operating condition schematic diagrames in the embodiment of the present invention two；
Fig. 4 is that cold section of injection operating mode schematic diagram is verified in the embodiment of the present invention two；
Fig. 5 is verification supercharging B cold section of the high-pressure safety injection pumps of row one injection operating mode schematic diagram in the embodiment of the present invention two；
Fig. 6 is that verification is pressurized cold section of injection operating mode schematic diagram of two high-pressure safety injection pumps in the embodiment of the present invention two；
Fig. 7 is that directly spray operating mode schematic diagram is verified in the embodiment of the present invention two；
Fig. 8 is verification recycling spray operating mode schematic diagram in the embodiment of the present invention two；
Fig. 9 is that two row low pressure safety injection pumps are verified in the embodiment of the present invention two using cold section of injection work of container spray heat exchanger
Condition schematic diagram.
Specific implementation mode
In order to solve to be grasped before H4 pipelines existing in the prior art do not have urgent mutual standby function, enabling H4 pipelines substantially
Risk is larger, low pressure safety injection pump is since operation leads to the reliability of apparatus body not under too low flow for a long time by irradiation by work person
Flow velocity in high and H4 pipelines is higher, there are problems that inducing the risk of Flow vibration, concrete thought of the present invention is as follows：It provides
A kind of pipeline system that the peace spray of peace note is spare each other, including at least one set are connected to safety injection system and container spray system
H4 pipelines between system, every group of H4 pipeline include：First connecting pipeline, the outlet line of one end connection and containment spray pump
On, the other end is communicated on the outlet line of low pressure safety injection pump；Second connecting pipeline, one end are communicated in positioned at containment spray pump
On the outlet line of the container spray heat exchanger in downstream, the other end is communicated in the outlet downstream pipeline of the low pressure safety injection pump
On, and it is located at the tie point on the downstream line of low pressure safety injection pump the upstream of high-pressure safety injection tie point；Container spray blowback
Flow tube line, one end are communicated on the outlet downstream pipeline of container spray heat exchanger, and one end is communicated in entering for containment spray pump
On mouth pipeline.It is spare to ensure that Safety Injection/container spray can be realized rapidly, may be implemented to pacify for H4 pipelines provided by the invention
The complete quick back-up safety injection pump of shell spray pump carries out cold section of injection, enhances the reliability during accident operation, and ensure
The safe and reliable operation of nuclear power generating sets, and promote nuclear power station economic benefit.
To make the object, technical solutions and advantages of the present invention clearer, below in conjunction with attached drawing to embodiment party of the present invention
Formula is described in further detail.
Embodiment one
As shown in Fig. 2, the embodiment of the present invention one provides a kind of pipeline system that the peace spray of peace note is spare each other, including at least
One group of H4 pipeline being connected between safety injection system and containment spray system, in the present embodiment, including two components
The H4 pipelines not being connected between identical A row and the safety injection system and containment spray system of B row, so that A row and B
The Safety Injection pump and containment spray pump of row can distinguish spare each other, each row safety injection system packet in accident mitigation
Include nuclear island melt pit, low pressure safety injection pump 6, high-pressure safety injection pump 8 and the reactor pressure vessel for passing sequentially through pipeline connection, Mei Yilie
Safety shower system includes passing sequentially through the reactor and Spent Fuel Pool cooling and processing water tank, container spray that pipeline connects
Pump 5 and container spray heat exchanger 7.Every group of H4 pipeline include：First connecting pipeline 1, one end connection and containment spray pump 5
Outlet line on, the other end is communicated on the outlet line of low pressure safety injection pump 6, for making the medium of safety injection system flow into
Containment spray system is to be sprayed；Second connecting pipeline 2, one end are communicated in positioned at 5 downstream of the containment spray pump
On the outlet line of container spray heat exchanger 7, the other end is communicated on the outlet downstream pipeline of the low pressure safety injection pump 6, and
It is located at the upstream of high-pressure safety injection tie point with the tie point on the downstream line of the low pressure safety injection pump 6, for making containment spray
The medium of leaching system flows into safety injection system to carry out cold section of injection；Container spray pump return line 3, one end are communicated in institute
It states on the outlet downstream pipeline of container spray heat exchanger 7, one end is communicated on the suction line of the containment spray pump 5,
For making the medium of containment spray system flow back；First connecting pipeline 1, the second connecting pipeline 2 and the peace
Full shell spray pump return line 3 is for keeping Safety Injection pump and containment spray pump spare each other in accident mitigation.
Specifically, be both provided on each H4 pipelines isolation valve module 4, in Fig. 1, due to the first connecting pipeline 1,
Isolation valve module 4 in second connecting pipeline 2 is identical as the isolation valve module 4 in container spray pump return line 3, in figure
The isolation valve module 4 in container spray pump return line 3 is only marked out, in the safety injection system and container spray
When system normal operation, water is each filled in each H4 pipelines, and the isolation valve module 4 is in closed state, so that
The safety injection system and containment spray system are mutually isolated, thus H4 pipelines put into operation before no longer need to carry out water-filling exhaust
Operation, spare response is rapid each other, and it is spare to ensure that Safety Injection/containment spray pump can be realized rapidly, safety may be implemented
It is sharp in the case where containment spray pump fails that the quick back-up safety injection pump of shell spray pump carries out cold section of injection Safety Injection pump
Residual heat of nuclear core is taken away with containment spray heat exchanger, the spray of containment is in addition realized in the case where containment spray pump fails
Leaching enhances the reliability during accident operation.
Embodiment two
The embodiment of the present invention two additionally provides a kind of verification method, and it is mutual to verify the peace note peace spray using multiple operating condition of test
For active redundancy pipeline system, the multiple operating condition of test includes：Container spray flow operating condition, containment spray pump are spare low
Safety injection pump operating mode, low pressure safety injection pump back-up safety shell spray pump spray operating mode, two row low pressure safety injection pumps are pressed to utilize container spray
Cold section of injection operating mode of heat exchanger.
Specifically the container spray flow operating condition includes the container spray flow operating condition of A row and B row；
The spare low pressure safety injection pump operating mode of containment spray pump includes cold section of injection operating mode, supercharging B cold section of the high-pressure safety injection pumps of row one
Inject operating mode and cold section of the high-pressure safety injection pump injection operating mode of supercharging two；The low pressure safety injection pump back-up safety shell spray pump spray
Operating mode includes that directly spray operating mode and recycling sprays operating mode.
In conjunction with shown in Fig. 3, this operating condition of test group mainly verifies whether containment spray system meets operation criterion, A row and B
Row are required to verify, and amount to 2 operating modes of verification, are now arranged in the case of A, and in A row safety injection systems, medium is by pipeline from nuclear island
Melt pit passes through low pressure safety injection pump 6, high-pressure safety injection pump 8 successively, then along A row low pressure cold section piii reactor pressure vessels, A row peaces
In full shell spray system, medium passes through containment spray pump 5, peace successively from reactor and Spent Fuel Pool cooling and processing water tank
Full shell spray heat exchanger 7 flow to A row sprays.When verifying the container spray flow operating condition of the A row or B row, specifically
Step is：The medium in reactor and Spent Fuel Pool cooling and processing water tank is set to flow to institute by the containment spray pump 5
Container spray heat exchanger 7 is stated, the reactor and spentnuclear fuel water are then flowed back to by the container spray pump return line 3
Pond is cooling and handles water tank, verifies the containment spray pump whether normal operation.
When verification containment spray pump 5, which substitutes low pressure injection pump 6, carries out cold section of injection, in conjunction with shown in Fig. 1, in existing skill
In art, when needing the containment spray pump 5 for separately verifying A row and B row, and separately verifying each containment spray pump 5, each
There are two suction inlets again for containment spray pump 5, i.e., nuclear island melt pit and reactor and Spent Fuel Pool are cooling and handle water tank, in total
Need verification the case where just there are four types of, in conjunction with shown in Fig. 4, in Fig. 4 the structure of containment spray system and safety injection system and
Fig. 3 is identical, and in the present invention, this operating condition of test group mainly verifies the replacement low pressure of containment spray pump 5 injection pump 6 and carries out cold section of note
Whether the safety criterion of heap work requirement is met during entering, it is only necessary to which the containment spray pump 5 for verifying the relatively low row of lift participates in experiment
, the water sucking mouth of pump is nuclear island melt pit, so only needs to verify an operating mode, compares and lower significantly with the prior art
Validation difficulty, when the verification cold section of injection operating mode, the specific steps are：Select the containment of the lower row of lift in A row and B row
Spray pump 5, it is assumed that A row 5 lifts of containment spray pump are relatively low, and the medium in nuclear island melt pit is made to pass through the containment spray pump 5
It is flow to the container spray heat exchanger 7, then certain media flow to reactor pressure by second connecting pipeline 2 and holds
Device, another part medium flow back to the nuclear island melt pit by the container spray pump return line 3, verify cold section of injection flow
Whether heap work requirement is met.
Cold section of injection is carried out when verification containment spray pump 5 substitutes 6 supercharging B one high-pressure safety injection pump 8 of row of low pressure safety injection pump
When operating mode, in conjunction with shown in Fig. 1, in the prior art, the containment spray pump 5 for separately verifying A row and B row is needed, and tested respectively
When demonstrate,proving each containment spray pump 5, each containment spray pump 5 again there are two suction inlet, i.e., nuclear island melt pit and reactor and
Spent Fuel Pool is cooling and handles water tank, in addition, B shows two high-pressure safety injection pumps 8, when selecting a high-pressure safety injection pump 8 of B row
Again there are two types of selection, need just there are eight kinds the case where verification in total, in conjunction with shown in Fig. 5, containment spray system and safety in Fig. 5
The structure of injected system is identical with Fig. 3, and in the present invention, this operating condition of test group mainly verifies containment spray pump 5 and substitutes low pressure
Safety injection pump 6 is pressurized B one high-pressure safety injection pump 8 of row and carries out the safety criterion whether cold section of injection period meets the requirement of heap work, due to
Its safety criterion requires to be more than certain certain value, it is only necessary to which containment spray pump 5 and the B row lifts for verifying the relatively low row of lift are lower
High-pressure safety injection pump 8, which combines, participates in experiment, and the water sucking mouth of pump is reactor and Spent Fuel Pool cooling and handles water tank, in this way
One only needs to verify an operating mode, compares and the prior art greatly reduces validation difficulty, verify the supercharging B row one
When cold section of injection operating mode of high-pressure safety injection pump, the specific steps are：Select A row and B row in the lower row of lift containment spray pump 5 with
And the lower high-pressure safety injection pump of lift 8 in B row, it is assumed that A row 5 lifts of containment spray pump are relatively low, the high pressure that institute's mark goes out in figure
8 lift of safety injection pump is relatively low, and the medium in reactor and Spent Fuel Pool cooling and processing water tank is made to pass through the container spray
Pump 5 flow to the container spray heat exchanger 7, and then certain media flow to reactor pressure by second connecting pipeline 2
Container, the lower high-pressure safety injection pump of lift 8 flow to the reactor pressure vessel, another portion during certain media is arranged by the B
Medium is divided to flow back to the reactor and Spent Fuel Pool cooling and processing water tank by the container spray pump return line 3,
Verify whether cold section of injection flow meets the requirement of heap work.
Cold section of injection operating mode is carried out when verification containment spray pump 5 substitutes 6 two high-pressure safety injection pumps 8 of supercharging of low pressure safety injection pump
When, in conjunction with shown in Fig. 1, in the prior art, the containment spray pump 5 for separately verifying A row and B row is needed, and separately verify every
When one containment spray pump 5, there are two suction inlets, i.e. nuclear island melt pit and reactor and weary combustion again for each containment spray pump 5
Expect that pond is cooling and processing water tank, in addition, B shows two high-pressure safety injection pumps 8, a when high-pressure safety injection pump 8 for selecting B row has again
Two kinds of selections need just have eight kinds the case where verification in total, in conjunction with shown in Fig. 6, containment spray system and Safety Injection in Fig. 6
The structure of system is identical with Fig. 3, and in the present invention, this operating condition of test group mainly verifies containment spray pump 5 and substitutes low pressure peace note
6 two high-pressure safety injection pumps 8 of supercharging of pump carry out the operation criterion for cold section of injection period whether meeting the requirement of containment spray pump 5, by
Criterion calls are run in it and are less than certain certain value, it is only necessary to verify containment spray pump 5, the A row high-pressure safety injections of the higher row of lift
It pumps the higher combination of high-pressure safety injection pump 8 of 8 and B row lifts and participates in experiment, the water sucking mouth of pump is reactor and spentnuclear fuel water
Pond is cooling and handles water tank, so only needs to verify an operating mode, and comparing, it is difficult to greatly reduce verification with the prior art
Degree, when verifying cold section of the high-pressure safety injection pump of the supercharging two injection operating mode, the specific steps are：Select lift higher in A row and B row
The higher high-pressure safety injection pump of lift 8 in the containment spray pumps 5 of row, the high-pressure safety injection pump of A row and B row, it is assumed that A row containments
5 lift of spray pump is higher, and 8 lift of high-pressure safety injection pump indicated in figure is higher, makes reactor and Spent Fuel Pool cooling and place
Medium in reason water tank flow to the container spray heat exchanger 7 by the containment spray pump 5, and then certain media passes through
Second connecting pipeline 2 flow to reactor pressure vessel, and the high-pressure safety injection pump 8 that certain media is arranged by the A flow to reaction
Core pressure vessel, the higher high-pressure safety injection pump of lift 8 flow to the reactor pressure vessel during certain media is arranged by the B,
Another part medium flows back to the reactor and Spent Fuel Pool cooling and processing by the container spray pump return line 3
Water tank, verifies whether cold section of injection flow meets the requirement of heap work.
When verification low pressure safety injection pump 6, which substitutes containment spray pump 5, to carry out directly spraying operating mode, in conjunction with shown in Fig. 1, existing
Have in technology, suction inlet is determined as reactor and Spent Fuel Pool cooling and processing water tank, but have A row and B to arrange two are low
The case where pressure safety injection pump 6 needs to be tested respectively, needs verification in total is with regard to there are two types of, in conjunction with shown in Fig. 7, A row safety in Fig. 7
In injected system, medium passes through low pressure safety injection pump 6, high-pressure safety injection pump 8 successively by pipeline from nuclear island melt pit, then passes to A row
Low pressure cold section, in A row containment spray systems, medium is cooling and processing water tank is successively by peace from reactor and Spent Fuel Pool
Full shell spray pump 5, container spray heat exchanger 7 flow to A row sprays.In the present invention, this operating condition of test group mainly verifies low pressure
Safety injection pump 6 substitutes the safety criterion whether its spray flow during containment spray pump 5 carries out directly spray meets the requirement of heap work,
Since its safety criterion requires to be more than certain certain value, it is only necessary to which the safety injection system pump for verifying the relatively low row of lift participates in experiment i.e.
Can, the water sucking mouth of pump is reactor and Spent Fuel Pool cooling and processing water tank, so only needs to verify an operating mode, phase
Compare and greatly reduces validation difficulty with the prior art, when verifying the directly spray operating mode, the specific steps are：Select A row and B
The low pressure safety injection pump 6 of the lower row of lift in row, it is assumed that A row low pressure safety injection pump lifts are relatively low, make reactor and spentnuclear fuel water
After medium in pond cooling and processing water tank flows through the low pressure safety injection pump 6, the reactor and weary combustion are directly flowed back in part
Expect that pond is cooling and handle water tank, the container spray heat exchanger 7 is partly flowed through by first connecting pipeline 1 and flow to A
Row spray flow to the nuclear island melt pit using B row sprays, and another part flow to cold section of A row low pressure peace note, and verification directly sprays
Whether spray flow described in period meets the requirement of heap work.
When verification low pressure safety injection pump 6, which substitutes containment spray pump 5, carries out recycling spray operating mode, in conjunction with shown in Fig. 1,
In the prior art, suction inlet is determined as nuclear island melt pit, but has A row and two low pressure safety injection pumps 6 of B row to need to be tried respectively
The case where testing, needing verification in total just there are two types of, in conjunction with shown in Fig. 8, containment spray system and safety injection system in Fig. 8
Structure is identical with Fig. 7, and in the present invention, this operating condition of test group mainly verifies low pressure safety injection pump 6 and substitutes the progress of containment spray pump 5
Whether its spray flow meets the safety criterion of heap work requirement during recycling spray, since its safety criterion is required more than a certain
Definite value, it is only necessary to which the low pressure safety injection pump 6 for verifying the relatively low row of lift participates in experiment, and the water sucking mouth of pump is nuclear island melt pit, in this way
One only needs to verify an operating mode, compares and the prior art greatly reduces validation difficulty, verify the recycling and spray
When operating mode, the specific steps are：Select the low pressure safety injection pump 6 of the lower row of lift in A row and B row, it is assumed that the low pressure peace note of A row
Pump that 6 lifts are relatively low, make the medium in nuclear island melt pit by the low pressure safety injection pump 6 after, certain media directly flows back to the nuclear island
Melt pit, certain media flow through the container spray heat exchanger 7 by first connecting pipeline 1 and flow to A row sprays, using
B row sprays flow to the nuclear island melt pit, and another part flow to cold section of A row low pressure peace note, verifies the spray during recycling spray
Whether leaching flow meets the requirement of heap work.
In conjunction with Fig. 7 and Fig. 8, in the present embodiment, 6 back-up safety shell spray pump 5 of design requirement low pressure safety injection pump sprays the phase
Between, including during directly spraying and recycling spray, the flow of low pressure safety injection pump 6 passes through containment spray heat exchanger 7 all the way
It is sprayed, all the way by the by-pass line of peace note.But even if primary Ioops back pressure is zero during experiment, low pressure safety injection pump 6 is complete
By-pass line is noted by peace by portion, and when being injected, Safety Injection flow indication is also just in 125m3/ h or so.Pacify in low pressure and notes
Pump during 6 back-up safety shell spray pumps 5 carry out spray operating mode, generally can along with SI operating modes, at this moment low pressure safety injection pump 6 go it is anti-
Answer heap and Spent Fuel Pool cooling and the miniflow line of processing water tank and nuclear island melt pit can not in master control positive closing, therefore
6 back-up safety shell spray pump 5 of verification low pressure safety injection pump carries out direct spray phase, and the flow of low pressure safety injection pump 6 is classified into three,
I.e. the dereaction heap of low pressure safety injection pump 6 and Spent Fuel Pool are cooling and the processing small flow of water tank, low pressure safety injection pump 6 are other by peace note
The flow of road pipeline, low pressure safety injection pump 6 pass through the spray flow of containment spray heat exchanger 7.Equally, in verification low pressure peace note
It pumps 6 back-up safety shell spray pumps 5 and carries out the melt pit recycling spray operating mode stage, the flow of low pressure safety injection pump 6 is classified into three, i.e.,
The small flow for removing melt pit of low pressure safety injection pump 6, low pressure safety injection pump 6 is by the flow of peace note by-pass line, the process of low pressure safety injection pump 6
The spray flow of containment spray heat exchanger 7.During low pressure safety injection pump back-up safety shell spray pump is sprayed, safety criterion
Selection low pressure safety injection pump 6 be all higher than by the spray flow and spray pressure of containment spray heat exchanger 7 and meet heap work and want
The definite value asked.Therefore after the branch for increasing miniflow line, low pressure safety injection pump 6 passes through the flow of containment spray heat exchanger 7
Can be less than normal with pressure, if can meet criterion calls at this time, design requirement can more be met by spraying the debugging plan of operating mode.Peace note system
It is less than 300m if there is direct safety injection signal and Safety Injection flow when system design3It, will not for protection low pressure safety injection pump 6 when/h
It suppresses pump, 6 dereaction heap of low pressure safety injection pump and Spent Fuel Pool cooling and handles water tank or go the small flow valve of nuclear island melt pit strong
System is opened.
In the present embodiment, due to low pressure safety injection pump back-up safety shell spray pump spray operating mode and other operating modes not phase
Together, it needs two various sizes of orifice plates of redesign to be tested, finishes all operating mode whole process and need to switch 5 peaces
The size of jet flow amount TSD orifice plates could accomplish real simulation to each operating mode.During cold conditions function test of uncapping, hole is switched
Plate just becomes the critical path that experiment carries out.Safety shower flow TSD media flow to B row sprays from A row sprays, then pass through
Valve flow to nuclear island melt pit, and butterfly valve is changed to manually gate valve in the present embodiment, while retaining the hole that orifice plate is the apertures 116mm
Plate has accomplished that operating mode simply switches by adjusting manually gate valve during experiment, ensure that the accuracy of flow-rate adjustment, while
The frequent orifice plate for replacing peace jet flow amount TSD that avoids and causing debugs duration too long problem.
When two low pressure safety injection pumps 6 of verification carry out cold section of injection operating mode using containment spray heat exchanger 7, in conjunction with figure
Shown in 1, in the prior art, there are two types of selections for suction inlet, i.e., nuclear island melt pit and reactor and Spent Fuel Pool are cooling and handle
Water tank, in addition, have the case where two high-pressure safety injection pumps 8 that B is arranged need to be tested respectively, need verification in total with regard to there are four types of,
In conjunction with shown in Fig. 9, containment spray system is identical with Fig. 3 with the structure of safety injection system in Fig. 9, in the present invention, this examination
Test operating mode group mainly verify two low pressure safety injection pumps 6 using containment spray heat exchanger 7 carry out cold section of injection period its injection
Whether flow meets the safety criterion of heap work requirement, since its safety criterion requires to be more than certain certain value, it is only necessary to verify B row and raise
The high-pressure safety injection pump 8 of the relatively low row of journey participates in experiment, and the water sucking mouth of pump is reactor and Spent Fuel Pool cooling and processing water
Case so only needs to verify an operating mode, compares and greatly reduces validation difficulty, verification two row with the prior art
Low pressure safety injection pump injects operating mode for cold section using container spray heat exchanger, the specific steps are：Select lift in B row lower described
High-pressure safety injection pump 8, it is assumed that 8 lift of high-pressure safety injection pump indicated in figure is relatively low, makes to answer heap and Spent Fuel Pool cooling and processing
Medium in water tank is by the low pressure safety injection pump 6 in A row, the first connecting tube during then certain media is arranged by the A
Line 1 flows through the container spray heat exchanger 7, then flows to the downstream pipeline, another part medium by second connecting pipeline 2
Directly through downstream line, after two parts medium converges, certain media is flowed directly to reactor pressure vessel, and another part is situated between
The high-pressure safety injection pump 8 during matter is arranged by A flow to reactor pressure vessel；Make to answer heap and Spent Fuel Pool cooling and place simultaneously
The low pressure safety injection pump 6 during the medium in water tank is arranged by B is managed, then certain media passes through the first connection during the B is arranged
Pipeline 1 flows through the container spray heat exchanger 7, then flows to the downstream pipeline by second connecting pipeline 2, and another part is situated between
Matter is directly through downstream line, and after two parts medium converges, the high-pressure safety injection pump 8 during certain media is arranged by A reacts
Core pressure vessel, the lower high-pressure safety injection pump of lift 8 flow to the reactor pressure vessel during certain media is arranged by B,
Another part medium flows directly into the reactor pressure vessel, and verification carries out cold section of injection period, and it injects whether flow meets
The requirement of heap work.
In conclusion application scheme at least has following advantageous effects compared with the existing technology：
1) it is spare to ensure that Safety Injection/container spray can be realized rapidly, may be implemented to pacify for H4 pipelines provided by the invention
The complete quick back-up safety injection pump of shell spray pump carries out cold section of injection；
2) reliability during accident operation is enhanced, and ensures the safe and reliable operation of nuclear power generating sets；
3) and nuclear power station economic benefit is promoted；
4) test method provided by the invention based on the H4 pipelines is ensuring that it is same that all nuclear safety criterions are able to verify
When, optimize debugging critical path；
5) it shortens H4 and improves the item debugging duration, and ensure the verification that nuclear safety criterion is more guarded.
It is above disclosed to be only a preferred embodiment of the present invention, the power of the present invention cannot be limited with this certainly
Sharp range, those skilled in the art can understand all or part of the processes for realizing the above embodiment, and is weighed according to the present invention
Equivalent variations made by profit requirement, still belong to the scope covered by the invention.
Claims (12)
1. a kind of nuclear power station safety injection peace sprays pipeline system spare each other, including at least one set be connected to safety injection system and
H4 pipelines between containment spray system, which is characterized in that every group of H4 pipeline include：
First connecting pipeline (1), on the outlet line of containment spray pump (5), the other end is communicated in low pressure peace for one end connection
On the outlet line of note pump (6), for making the medium of safety injection system flow into containment spray system to be sprayed；
Second connecting pipeline (2), one end are communicated in the container spray heat exchanger positioned at the containment spray pump (5) downstream
(7) on outlet line, the other end is communicated on the outlet downstream pipeline of the low pressure safety injection pump (6), and is pacified with the low pressure
Tie point on the downstream line of note pump (6) is located at the upstream of high-pressure safety injection tie point, Jie for making containment spray system
Mass flow enters safety injection system to carry out cold section of injection；
Container spray pump return line (3), one end are communicated in the outlet downstream pipeline of the container spray heat exchanger (7)
On, one end is communicated on the suction line of the containment spray pump (5), for making the medium of containment spray system be returned
Stream；
First connecting pipeline (1), the second connecting pipeline (2) and the container spray pump return line (3) are for making
Safety Injection pumps and containment spray pump can be spare each other in accident mitigation.
2. nuclear power station safety injection peace according to claim 1 sprays pipeline system spare each other, which is characterized in that each described
Isolation valve module (4) is both provided on H4 pipelines, in the safety injection system and containment spray system normal operation,
Water is each filled in each H4 pipelines, and the isolation valve module (4) is in closed state, so that the Safety Injection system
System and containment spray system are mutually isolated.
3. nuclear power station safety injection peace according to claim 1 sprays pipeline system spare each other, which is characterized in that including two groups
The H4 pipelines being connected between identical A row and the safety injection system and containment spray system of B row, so that A is arranged
Safety Injection pump and containment spray pump with B row can be spare each other respectively in accident mitigation.
4. a kind of pacifying the verification method for spraying pipeline system spare each other, spy based on nuclear power station safety injection described in claim 1
Sign is that verifying the peace note peace spray using multiple operating condition of test, active redundancy pipeline system, the multiple operating condition of test include each other：
The spare low pressure safety injection pump operating mode of container spray flow operating condition, containment spray pump, the spray of low pressure safety injection pump back-up safety shell
Leaching pump spray operating mode, two row low pressure safety injection pumps utilize cold section of injection operating mode of container spray heat exchanger.
5. verification method according to claim 4, which is characterized in that the container spray flow operating condition includes A row
With the container spray flow operating condition of B row；
The spare low pressure safety injection pump operating mode of containment spray pump includes cold section of injection operating mode, supercharging B one high-pressure safety injection pump of row
Cold section of injection operating mode and cold section of the high-pressure safety injection pump injection operating mode of supercharging two；
The low pressure safety injection pump back-up safety shell spray pump spray operating mode includes directly spraying operating mode and recycling spray operating mode.
6. verification method according to claim 5, which is characterized in that verify the container spray flow of the A row or B row
When operating condition, the specific steps are：The medium in reactor and Spent Fuel Pool cooling and processing water tank is set to pass through the safety
Shell spray pump (5) flow to the container spray heat exchanger (7), is then flowed by the container spray pump return line (3)
The reactor and Spent Fuel Pool cooling and processing water tank are returned, verifies the containment spray pump whether normal operation.
7. verification method according to claim 5, which is characterized in that when operating mode is injected in described cold section of verification, specific steps
For：The containment spray pump (5) for selecting the lower row of lift in A row and B row, makes the medium in nuclear island melt pit pass through the containment
Spray pump (5) flow to the container spray heat exchanger (7), and then certain media is flow to by second connecting pipeline (2)
Reactor pressure vessel, another part medium flow back to the nuclear island melt pit by the container spray pump return line (3), test
Demonstrate,prove whether cold section of injection flow meets the requirement of heap work.
8. verification method according to claim 5, which is characterized in that described one high-pressure safety injection pump of supercharging B row of verification is cold
When section injection operating mode, the specific steps are：It is raised in the containment spray pump (5) of the lower row of lift and B row in selection A row and B row
The lower high-pressure safety injection pump of journey (8) makes the medium in reactor and Spent Fuel Pool cooling and processing water tank pass through the safety
Shell spray pump (5) flow to the container spray heat exchanger (7), and then certain media is flowed by second connecting pipeline (2)
To reactor pressure vessel, the lower high-pressure safety injection pump of lift (8) flow to the reaction stacking pressure during certain media is arranged by the B
Force container, another part medium flow back to the reactor and Spent Fuel Pool by the container spray pump return line (3)
Cooling and processing water tank, verifies whether cold section of injection flow meets the requirement of heap work.
9. verification method according to claim 5, which is characterized in that verification cold section of the high-pressure safety injection pump of supercharging two note
When entering operating mode, the specific steps are：Select the containment spray pump (5) that lift higher arranges in A row and B row, the high-pressure safety injection pump of A row
And the higher high-pressure safety injection pump of lift (8) in B row, make the medium warp in reactor and Spent Fuel Pool cooling and processing water tank
It crosses the containment spray pump (5) and flow to the container spray heat exchanger (7), then certain media is connected by described second
Pipeline (2) flow to reactor pressure vessel, and the high-pressure safety injection pump (8) that certain media is arranged by the A flow to reactor pressure appearance
Device, the higher high-pressure safety injection pump of lift (8) flow to the reactor pressure vessel, another portion during certain media is arranged by the B
Medium is divided to flow back to the reactor and Spent Fuel Pool cooling and processing water by the container spray pump return line (3)
Case, verifies whether cold section of injection flow meets the requirement of heap work.
10. verification method according to claim 5, which is characterized in that when verifying the directly spray operating mode, specific steps
For：The low pressure safety injection pump (6) for selecting the lower row of lift in A row and B row makes reactor and Spent Fuel Pool cooling and processing
After medium in water tank flows through the low pressure safety injection pump (6), the reactor and Spent Fuel Pool cooling are directly flowed back in part
With processing water tank, the container spray heat exchanger (7) is partly flowed through by first connecting pipeline (1) and flow to A row sprays,
It is flow to the nuclear island melt pit using B row sprays, another part flow to cold section of A row low pressure peace note, institute during verification directly sprays
State whether spray flow meets the requirement of heap work.
11. verification method according to claim 5, which is characterized in that specific to walk when the verification recycling sprays operating mode
Suddenly it is：The low pressure safety injection pump (6) for selecting the lower row of lift in A row and B row, makes the medium in nuclear island melt pit pass through described low
After pressing safety injection pump (6), certain media directly flows back to the nuclear island melt pit, and certain media is flowed by first connecting pipeline (1)
A row sprays are flow to through the container spray heat exchanger (7), the nuclear island melt pit, another part stream are flow to using B row sprays
To cold section of A row low pressure peace note, whether the spray flow meets the requirement of heap work during verification recycling spray.
12. verification method according to claim 5, which is characterized in that the verification two row low pressure safety injection pump utilizes safety
Cold section of injection operating mode of shell spray heat exchanger, the specific steps are：The lower high-pressure safety injection pump (8) of lift in B row is selected, makes to answer
Medium in heap and Spent Fuel Pool cooling and processing water tank passes through the low pressure safety injection pump (6) in A row, then certain media
The first connecting pipeline (1) in being arranged by the A flows through the container spray heat exchanger (7), then is connected by described second
Pipeline (2) flows to the downstream pipeline, and another part medium is directly through downstream line, after two parts medium converges, certain media
It is flowed directly to reactor pressure vessel, the high-pressure safety injection pump (8) during another part medium is arranged by A flow to reactor pressure
Container；
The low pressure safety injection pump (6) in making to answer the medium in heap and Spent Fuel Pool cooling and processing water tank to be arranged by B simultaneously,
Then the first connecting pipeline (1) during certain media is arranged by the B flows through the container spray heat exchanger (7), then passes through
Second connecting pipeline (2) flows to the downstream pipeline, and another part medium converges it directly through downstream line, two parts medium
Afterwards, the high-pressure safety injection pump (8) reactor pressure vessel during certain media is arranged by A, lift is more during certain media is arranged by B
The low high-pressure safety injection pump (8) flow to the reactor pressure vessel, and another part medium flows directly into the reaction stacking pressure
Force container, verification carries out cold section of injection period, and it injects whether flow meets the requirement of heap work.
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| CN201810373900.9A CN108665982A (en) | 2018-04-24 | 2018-04-24 | A kind of pipeline system and its verification method that the spray of nuclear power station safety injection peace is spare each other |
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| CN111638701A (en) * | 2020-04-24 | 2020-09-08 | 岭东核电有限公司 | Nuclear power station safety injection verification method and device, computer equipment and storage medium |
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