CN106531267B - A kind of underground nuclear power station cavity group drainage system and method - Google Patents
A kind of underground nuclear power station cavity group drainage system and method Download PDFInfo
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- CN106531267B CN106531267B CN201610767102.5A CN201610767102A CN106531267B CN 106531267 B CN106531267 B CN 106531267B CN 201610767102 A CN201610767102 A CN 201610767102A CN 106531267 B CN106531267 B CN 106531267B
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- G—PHYSICS
- G21—NUCLEAR PHYSICS; NUCLEAR ENGINEERING
- G21D—NUCLEAR POWER PLANT
- G21D1/00—Details of nuclear power plant
- G21D1/04—Pumping arrangements
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- G—PHYSICS
- G21—NUCLEAR PHYSICS; NUCLEAR ENGINEERING
- G21C—NUCLEAR REACTORS
- G21C17/00—Monitoring; Testing ; Maintaining
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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
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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 underground nuclear power station cavity group drainage system and methods, the indoor ponding in underground nuclear power station hole flowed out through drain bucket is monitored with radiological monitor, when monitoring that ponding has radioactivity, controller closes the first isolating valve, and open the second isolating valve, enter with radioactive ponding and be related to radioactive draining branch, and siphonic water-collecting well is discharged into later via the disposition of radiogen office treatment；When ponding is not detected with radioactivity, controller closes the second isolating valve, and opens the first isolating valve, and siphonic water-collecting well is discharged into without radioactive ponding；Ponding is discharged into outside massif through siphonic water-collecting well in river.Passive drainage system is built using siphon pipeline and siphonic water-collecting well, the negative pressure formed in siphoning installation moves the water progress pressure flow in pipeline, accelerate flowing velocity, drainage effect is good, under either unexpected ponding or major accident operating mode, ponding in an organized way, efficiently can be discharged underground chamber by drainage system.
Description
Technical field
The invention belongs to underground technical field of nuclear power, and in particular to a kind of underground nuclear power station cavity group drainage system and side
Method.
Background technology
Underground nuclear power station sets multiple caverns to accommodate reactor building and other auxiliary plants in underground or massif, utilizes
Natural last one physical barrier of the rock mass as depth defense principle, ensures reactor safety.
Underground chamber is communicated by inlet and outlet piping, ventilation opening and discharge duct with external environment, and the presence of these channels can
It can cause surprisingly to intake in cavern, if water inlet cannot discharge in time, cavern's internal water accumulation will be caused, there are the possibility of water logging,
Influence the normal operation of each system and equipment, when leading to major accident engineered safeguards features can not normal response, threaten nuclear power
It stands safe；When major accident occurs for reactor, containment may rupture or even fail, and carrying radioactive cooling agent will flow to
Reactor cavern causes cavern's internal water accumulation, not only threaten cavern, equipment safety, but also radioactivity ponding can be to reactor hole
Outdoor rock mass migrates, and polluted underground water body causes serious environmental pollution.
The water discharge method of ground Nuclear Power Station Factory Building at present mainly for the situation of heavy showers, utilizes hydrocone type rain water on roof
Drainage system excludes rain water on roof, so as to which rainwater be avoided to enter inside workshop, by installations and facilities in workshop and extraneous rainwater environment
Isolation.
The draining of underground engineering is in an organized way drained underground water using the method dredged by drainage system, to weaken water
To the pressure of underground structure, reduce osmosis of the water to structure, so as to which underground engineering be assisted to reach waterproof purpose.Common row
Water method is flowed by collector pipe in sump to ooze draining, i.e., the water oozed out water layer, then carries out machine using Special water pump
Tool draining.However the infiltration in rock mass water layer can only be concentrated and dredge discharge by this mode for oozing row, can not discharge presence in time
In the indoor a large amount of ponding in hole.
Underground nuclear power station cavern internal water accumulation exist containing radioactivity, the possibility of polluted underground water, therefore cannot simply according to
Existing underground engineering drainage system and method are removed, needs the handling problems of special consideration radioactivity ponding.
Invention content：
The defects of in order to overcome above-mentioned background technology, the present invention provide a kind of underground nuclear power station cavity group drainage system and side
Cavern's internal water accumulation using siphoning installation is quickly discharged, organized free-draining can be also carried out under extreme accident by method.
In order to solve the above-mentioned technical problem used technical solution of the invention is：
A kind of underground nuclear power station cavity group drainage system is equipped with several pumping monitorings isolation dress in underground nuclear power station cavern
It puts, the pumping monitoring isolating device includes being arranged on the drain bucket of the cavern, and the output pipe of the drain bucket is connected with
The first branch and the second branch, the first branch are equipped with the first isolating valve, and the second branch is equipped with the second isolating valve；It is described
It is additionally provided with to monitor whether draining has radioactive radiological monitor, the radioactivity prison on the output pipe of drain bucket
Survey device and be connected to controller, two signal output ends of the controller connect respectively first isolating valve and described second every
Control terminal from valve；The first branch connection is not directed to radioactive draining branch, and the second branch connection is related to radiating
The draining branch of property；It is described to be not directed to radioactive draining branch and connected with the entrance of siphonic water-collecting well, it is described to be related to radioactive row
Water branch is connected with the entrance of radioactivity office treatment, and the outlet of the radioactivity office treatment is connected with the entrance of the siphonic water-collecting well；
The outlet connection discharge tube of the siphonic water-collecting well.
Preferably, several pumping monitoring isolating devices are laid in control, diesel engine, repair air-conditioning cavern, nuclear reaction respectively
Heap cavern, offal treatment cavern, steam turbine cavern, Fa Zha caverns, the nuclear reactor cavern are provided with described at least two
Several pumping monitoring isolating devices.
Preferably, the discharge tube of the siphonic water-collecting well includes the natural discharge tube for being connected to the siphonic water-collecting well outlet
With power discharge tube, the position that the nature discharge tube is connected to the siphonic water-collecting well outlet is equipped with third isolating valve, described
The position that power discharge tube is connected to the siphonic water-collecting well outlet is equipped with the 4th isolating valve；Further include water level monitor, the water
Position monitor is connected to the controller, and two signal output ends of the controller connect the third isolating valve and institute respectively
State the control terminal of the 4th isolating valve.
Preferably, river directly connects outside nature discharge tube and the massif, the natural discharge tube is from connection
There is downward gradient between being connected to the port in massif outside river in the port of the third isolating valve.
Preferably, the power discharge tube is connected by draining pump with river outside massif, the entrance of the draining pump
Connect the 4th isolating valve, the outlet connection massif outside river of the draining pump.
Preferably, the radioactivity office treatment is arranged on underground, between the radioactivity office treatment and the siphonic water-collecting well
The 5th isolating valve is additionally provided on pipeline.
The present invention also provides a kind of underground nuclear power station cavity group water discharge methods carried out using above system：
To being carried out through the indoor ponding in underground nuclear power station hole that the drain bucket flows out with the radiological monitor
Monitoring,
When monitoring that ponding has radioactivity, the controller closes first isolating valve, and opens the second isolation
Valve, have radioactive ponding enter described in be related to radioactive draining branch, and via the disposal of radioactive substances room at
The siphonic water-collecting well is discharged into after putting；
When ponding is not detected with radioactivity, the controller closes the second isolating valve, and opens the first isolating valve,
The siphonic water-collecting well is discharged into without radioactive ponding；
The ponding is discharged into outside massif through siphonic water-collecting well in river.
Preferably, when the water level monitor detects that the water level of purpose discharge areas is higher than preset value, the control
Device closes the third isolating valve, and opens the 4th isolating valve, and the ponding is discharged by the draining pump through the power
Outside discharge of pipes to massif in river；
When the water level monitor detects that the water level of purpose discharge areas is not higher than the preset value, the controller
The 4th isolating valve is closed, and opens the third isolating valve, the ponding is emitted into massif through the natural discharge tube
In external river.
Preferably, when major accident occurs for the nuclear reactor cavern, the 5th isolating valve is closed, by high radioactivity
Ponding is isolated in radioactivity office treatment.
The beneficial effects of the present invention are：Contain the product of radioactive substance to each cavern by pumping monitoring isolating device
Water is individually handled, to ensure draining quality；Different cavern's draining branch circuit parallel connections are arranged and relate to put puts siphon row with non-relate to
Water branch circuit parallel connection is arranged, avoids the migration of radionuclide, reduces the pressure of radioactive substance processing, improves drainage efficiency；
It is combined by active power discharge tube and passive natural discharge tube, copes with water different outside massif
Position situation ensures nuclear plant safety operation.When extraneous water level is relatively low, the passive free-draining of total system improves the peace of nuclear power station
Quan Xing；When extraneous water level is higher, siphon drainage branch is passive to be discharged to siphonic water-collecting well by ponding, and power plant is by water in siphonic water-collecting well
The discharge outlet higher than design flood level is discharged to, prevents river water from pouring in down a chimney, ensures the safety of facilities and equipment in cavern.
During major accident, radioactivity office treatment accommodates the high radioactivity ponding flowed out out of cavern, is isolated, at waiting
Reason prevents the diffusion of radionuclide, ensures the safety of the public, staff and environment；
The present invention builds passive drainage system using siphon pipeline and siphonic water-collecting well, and the negative pressure formed in siphoning installation makes pipe
Water in road carries out pressure flow and moves, and accelerates flowing velocity, and drainage effect is good, either unexpected ponding or major accident operating mode
Under, ponding in an organized way, efficiently can be discharged underground chamber by drainage system.
Description of the drawings
Fig. 1 is the structure diagram of the embodiment of the present invention one；
In figure：1st, drain bucket；2nd, radiological monitor；3rd, the first isolating valve；4th, the second isolating valve；5th, output pipe；6、
It is not directed to radioactive draining branch；7th, it is related to radioactive draining branch；8th, radioactivity office treatment；9th, siphonic water-collecting well；10th, siphon
Wall；11st, third isolating valve；12nd, natural discharge tube；13rd, the 4th isolating valve；14th, power discharge tube；15th, draining pump；16、
5th isolating valve；17th, rhone；18th, river；19th, massif.
Specific embodiment
The present invention is described further with reference to the accompanying drawings and examples.
Embodiment one
A kind of underground nuclear power station cavity group drainage system, the underground nuclear power station cavern in massif 19 is arranged on are equipped with several
Pumping monitoring isolating device, pumping monitoring isolating device include being arranged on the drain bucket 1 of cavern, and the output pipe 5 of drain bucket 1 connects
The first branch and the second branch are connected to, the first branch is equipped with the first isolating valve 3, and the second branch is equipped with the second isolating valve 4；Drain bucket
It is additionally provided with to monitor whether draining has radioactive radiological monitor 2 on 1 output pipe 5, radiological monitor 2 connects
Controller is connected to, two signal output ends of controller connect the control terminal of the first isolating valve 3 and the second isolating valve 4 respectively；The
The connection of one branch is not directed to radioactive draining branch 6, and the second branch connection is related to radioactive draining branch 7；It is not directed to put
The draining branch 6 of penetrating property is connected with the entrance of siphonic water-collecting well 9, is related to the entrance of radioactive draining branch 7 and radioactivity office treatment 8
Connection, the outlet of radioactivity office treatment 8 is connected with the entrance of siphonic water-collecting well 9；The outlet connection discharge tube of siphonic water-collecting well 9, delivery pipe
Road is connected with 19 outside river 18 of massif.
Several pumping monitoring isolating devices be laid in respectively control, diesel engine, repair air-conditioning cavern, nuclear reactor cavern,
Offal treatment cavern, steam turbine cavern, Fa Zha caverns, nuclear reactor cavern are provided at least two several pumping monitoring isolation
Device.
May there be the radioactivity that can not largely discharge in time in the case where major accident occurs, in nuclear reactor cavern
Ponding, radioactivity ponding can be migrated to rock mass outside reactor cavern, polluted underground water body, lead to environment by substantial pollution,
Therefore it is set in nuclear reactor cavern there are two pumping monitoring isolating device, the drain bucket 1 of two draining detection isolating devices is distinguished
Positioned at reactor both sides, to accelerate the drainage speed under major accident.Each drain bucket 1 individually guides a draining branch into,
Between each draining independently of each other, do not interact, so as to have the function that each cavern's inner product water segregation, to prevent
Radioactivity ponding pollutes "dead" ponding, reduces discharge difficulty.
Drain bucket 1 is equipped with cover board, to keep the negative pressure state of 1 throat of drain bucket, makes stream of the flow from its edge to center
Dynamic to accelerate, cover board is equipped with anti-whirlpool baffle, for drain bucket 1 is prevented to be centrally formed whirlpool.
The discharge tube of siphonic water-collecting well 9 includes the natural discharge tube 12 for being connected to the outlet of siphonic water-collecting well 9 and power discharge
Pipeline 14, the position that natural discharge tube 12 is connected to the outlet of siphonic water-collecting well 9 are equipped with third isolating valve 11, and power discharge tube 14 connects
The position for being connected to the outlet of siphonic water-collecting well 9 is equipped with the 4th isolating valve 13；Water level monitor is further included, water level monitor is connected to control
Device, two signal output ends of controller connect the control terminal of 11 and the 4th isolating valve 13 of third isolating valve respectively.
Natural discharge tube 12 is directly connected with 19 outside river 18 of massif, natural discharge tube 12 from be connected to third every
Port from valve 11 has downward gradient to being connected to outside massif between the port in river.Naturally drain the outlet of pipeline
Absolute altitude is slightly above ordinary water level, and the gradient for naturally draining pipeline is more than 5 ‰, is conducive to 9 internal water accumulation of siphonic water-collecting well being discharged to river
18.The third isolating valve 11 of pipeline initial position setting, state is normally opened, and flood level is higher than natural drainage water level outside nuclear power station
When, controller triggering third isolating valve 11 is closed, and pipe end leads to 19 outside river of massif, 18 downstream.
Power discharge tube 14 is connected by draining pump 15 with 19 outside river 18 of massif, the entrance of draining pump 15 connection the
Water is discharged to 19 outside river 18 of massif by four isolating valves 13, the outlet of draining pump 15 by a rhone 17.4th isolating valve
13 are located at pipeline initial segment, and state is normally closed, when flood level is higher than natural drainage water level outside nuclear power station, controller triggering the 4th
13 unlatchings of isolating valve, draining pump 15 are used to after 9 internal water accumulation of siphonic water-collecting well is promoted certain altitude discharge, 14 end of power discharge tube
End is connected by one section of rhone 17 diagonally downward with 19 outside river water of massif；The spout elevation of dynamic drainage pipeline, which is higher than, to be set
Flood level is counted, prevents river water under flood operating mode from pouring in down a chimney into nuclear power station.
In the present embodiment, output pipe 5, the second branch, is not directed to radioactive draining branch 6, is related to putting the first branch
The draining branch 7 of penetrating property, radioactivity office treatment 8, siphonic water-collecting well 9 and its between pipeline form siphon drainge system.In siphonic water-collecting well 9
There is siphon wall 10.Compared to conventional gravity drainage system, siphon drainge system drainage speed faster, drainage effect it is more preferable；Water
Flat transverse tube is horizontal, and is not required to the setting gradient, facilitates construction；Vertical VERTICAL TUBE caliber is small, quantity is few, cloth easy to process
It puts.
Be not directed to radioactive draining branch 6 include first level line segments, the first of each pumping monitoring isolating device
Branch is all connected to horizontal tube section；Be related to radioactive draining branch 7 include the second horizontal tube section, each pumping monitoring every
The second branch from device is all connected to the second horizontal tube section.
Radioactivity office treatment 8 is arranged on underground, other workshop caverns are identical with nuclear power station for structure arrangement, and volume is not less than
Twice of containment liquid leakage amount during major accident, with ensure can be completely isolated in ground by high radioactivity ponding under major accident
Under, it waits pending.
Pumping monitoring isolating device, which is connected in the second branch for being related to radioactive draining branch 7, is provided with the second isolation
Valve 4 is related to radioactive draining branch 7 and connects radioactivity office treatment 8, and 4 state of the second isolating valve is normally closed, radiological monitor 2
When monitoring radioactive substance, to controller output signal, controller opens the second isolating valve 4, and radioactivity office treatment 8 is located at
Branch end is connect by pipeline with siphonic water-collecting well 9, for being filtered to radioactivity ponding, desalination or evaporation process and prison
Survey that treated whether ponding radioactivity is up to standard.
The 5th isolating valve 16 is provided on pipeline between radioactivity office treatment 8 and siphonic water-collecting well 9, serious thing occurs for reactor
Therefore when, the 5th isolating valve 16 is closed, and high radioactivity ponding is stored separately in radioactivity office treatment 8, is avoided outside pollution massif
River water.
The present embodiment uses passive siphon drainge system, and drain bucket 1 is located on the ground of each cavern bottom, by perpendicular
Straight output pipe 5 is connect with the first branch and the second branch, and radiological monitor 2 is located on output pipe 5, and described do not relate to is put
Draining branch is arranged in parallel with relating to rafting water branch circuit parallel connection, and extend branch end to underground deeper inside by connecting pipe leads to respectively
To siphonic water-collecting well 9.
Since unexpected water inlet or major accident lead to ponding in underground nuclear power station cavern, when water accumulating volume is little, draining system
Gravity drainage is carried out in system, although the ability of gravity drainage is limited, is enough to cope with water accumulating volume at this time；When water accumulating volume rapidly increases
Add, full of ponding in drainage system pipe, exist without air, siphonage will be formed, vacuum makes to be formed in pipeline in pipe
Pressure flowing rapidly discharges the indoor ponding in hole.
To be not directed to radioactive draining branch 6 in the present embodiment drainage system, near branch first level line segments
Short tube is the pipe of diameter 90mm, long 1m；
As shown in FIG., control, diesel engine, repair air-conditioning cavern are connected separately in first level line segments from left to right
Draining branch, the first draining branch of nuclear reactor cavern, the second draining branch of nuclear reactor cavern, offal treatment hole
Draining branch, steam turbine cavern draining branch, the Fa Zha caverns draining branch of room.
Control, diesel engine, the draining branch of repair air-conditioning cavern and nuclear reactor cavern the first draining branch between the
A diameter of 110mm, a length of 53m in one horizontal tube section, the transverse tube after the first draining branch of nuclear reactor cavern are a diameter of
200mm, overall length 208m；A diameter of 160mm, a length of 20m of the latter linked vertical tube pipeline section of first level line segments；Lead to rainbow
Inhale horizontal transverse-pipe diameter 315mm, the long 1m of well 9.Each draining branch can be individually formed siphon, quick hydrophobic.Following table is listed
Each branch forms the ponding volume that siphon needs：
The width of underground nuclear power station cavern is about 30m or so, length for 45~250m not etc., highly between 10~70m,
When cavern, inner product water depth reaches mm magnitudes, you can forms siphon, accelerates the ponding velocity of discharge, active drainage is to control in cavern
Depth of accumulated water, be conducive to ensure cavern and equipment safety therein.
The diameter of drainage speed and pipeline, length and material are related；Ponding in siphon drainage branch is under siphonage
It carries out pressure flow to move, is led to energy loss by drag effect, energy loss is divided into frictional head loss and local head loss.
Frictional head loss is caused by the length of pipeline, and calculation formula is
Wherein：For friction factor of head loss；
G=9.8m/s2For acceleration of gravity；
N=0.011 is steel tube surface roughness；
R=D/4 is the hydraulic radius of pipe；
D is pipe diameter.
According to the cavern layout of underground nuclear power station and the pipeline geometric properties of drainage system, you can calculate each draining branch
Frictional head loss dimensionless factor, respectively：
Local head loss is fluid energy losses caused by flow section shape and direction mutation.Due to part
The size of head loss is difficult to accurately calculate, and generally use experiment simulates the local head loss of pipeline with empirical coefficient, this
By determining that the local loosening ξ of particular component in pipeline obtains local head loss in embodiment.It is tried according to engineering
Test summary, the local loosening of each component is following (when the wherein local loosening ξ of isolating valve is valve wide open
Value)：
| Component names | 90 ° of elbows | Standard threeway | Isolating valve |
| ξ | 0.55 | 1 | 0.17 |
The frictional head loss of known pipeline and local head loss can pass throughCalculate outlet pipe
The discharge coefficient μ of road systemc。
Pipe inner product water flow velocityDifference in height 21m of the gross head of pipeline between drain bucket 1 to siphonic water-collecting well 9,
I.e. for drainage system siphon drainage speed between 2.40~5.85m/s, water velocity is fast, and drainage effect is good.It can be managed by changing
The diameter in road and the drainage speed that length is controllable drainage system.
Embodiment two
A kind of underground nuclear power station cavity group water discharge method：
The indoor ponding radiological monitor 2 in the underground nuclear power station hole flowed out through drain bucket 1 is monitored,
When monitoring that ponding has radioactivity, controller closes the first isolating valve 3, and opens the second isolating valve 4, has
Radioactive ponding, which enters, is related to radioactive draining branch 7, and is discharged into siphonic water-collecting well later via the disposition of radiogen office treatment
9；
When ponding is not detected with radioactivity, controller closes the second isolating valve 4, and opens the first isolating valve 3, no
It puts substance draining branch 6 by not relating to radioactive ponding and is discharged into siphonic water-collecting well 9；
Ponding is through the externally discharged river 18 of siphonic water-collecting well 9.
Ponding in siphonic water-collecting well 9 externally discharged river 18 in the following manner again：
When water level monitor detects that the water level of purpose discharge areas is higher than preset value, controller opens the 4th isolating valve
13, and third isolating valve 11 is closed, ponding is emitted into through power discharge tube 14 in external river 18 by draining pump 15；
When water level monitor detects that the water level of purpose discharge areas is not higher than preset value, controller opens third isolation
Valve 11, ponding are emitted into external river 18 through natural discharge tube 12.
Respectively control, diesel engine, repair air-conditioning cavern, nuclear reactor cavern, offal treatment hole are laid in by several
Room, steam turbine cavern, Fa Zha caverns pumping monitoring isolating device discharge ponding, nuclear reactor cavern is provided at least two numbers
A pumping monitoring isolating device.
May there be the radioactivity that can not largely discharge in time in the case where major accident occurs, in nuclear reactor cavern
Ponding, radioactivity ponding can be migrated to rock mass outside reactor cavern, polluted underground water body, lead to environment by substantial pollution,
Therefore it is set in nuclear reactor cavern there are two pumping monitoring isolating device, the drain bucket 1 of two draining detection isolating devices is distinguished
Positioned at reactor both sides, to accelerate the drainage speed under major accident.Each drain bucket 1 individually guides a draining branch into,
Between each draining branch independently of each other, do not interact, so as to have the function that each cavern's inner product water segregation, with
It prevents radioactivity ponding from polluting "dead" ponding, reduces discharge difficulty.
There is provided the 5th isolating valve 16, when major accident occurs for nuclear reactor, controller close radioactivity office treatment 8 with
High radioactivity ponding is stored separately in radioactivity office treatment 8, avoided by the 5th isolating valve 16 on the pipeline between siphonic water-collecting well 9
Pollute river water outside massif.
It should be understood that for those of ordinary skills, can be improved or converted according to the above description,
And all these modifications and variations should all belong to the protection domain of appended claims of the present invention.
Claims (9)
1. a kind of underground nuclear power station cavity group drainage system, it is characterised in that：It is supervised in underground nuclear power station cavern equipped with several drainings
Isolating device is surveyed, the pumping monitoring isolating device includes being arranged on the drain bucket (1) of the cavern, the drain bucket (1)
Output pipe (5) is connected with the first branch and the second branch, and the first branch is equipped with the first isolating valve (3), described second
Road is equipped with the second isolating valve (4)；Be additionally provided on the output pipe (5) of the drain bucket (1) for monitor draining whether have put
The radiological monitor (2) of penetrating property, the radiological monitor (2) are connected to controller, and two signals of the controller are defeated
Outlet connects the control terminal of first isolating valve (3) and second isolating valve (4) respectively；The first branch connection does not relate to
And radioactive draining branch (6), the second branch connection are related to radioactive draining branch (7)；It is described to be not directed to radiate
Property draining branch (6) connected with the entrance of siphonic water-collecting well (9), radioactive draining branch (7) and the radioactivity of being related to is disposed
The entrance connection of room (8), the outlet of the radioactivity office treatment (8) is connected with the entrance of the siphonic water-collecting well (9)；The siphonic water-collecting well
(9) outlet connection discharge tube.
2. a kind of underground nuclear power station cavity group drainage system according to claim 1, it is characterised in that：Several pumping monitorings
Isolating device is laid in control room, diesel engine, repair air-conditioning cavern, nuclear reactor cavern, offal treatment cavern, steamer respectively
Auger room, Fa Zha caverns, the nuclear reactor cavern are provided at least two pumping monitoring isolating devices.
3. a kind of underground nuclear power station cavity group drainage system according to claim 2, it is characterised in that：The siphonic water-collecting well
(9) discharge tube includes the natural discharge tube (12) and power discharge tube that are connected to the siphonic water-collecting well (9) outlet
(14), the position that the natural discharge tube (12) is connected to the siphonic water-collecting well (9) outlet is equipped with third isolating valve (11), described
The position that power discharge tube (14) is connected to the siphonic water-collecting well (9) outlet is equipped with the 4th isolating valve (13)；The siphonic water-collecting well (9)
Discharge tube further include water level monitor, the water level monitor is connected to the controller, two letters of the controller
Number output terminal connects the control terminal of the third isolating valve (11) and the 4th isolating valve (13) respectively.
4. a kind of underground nuclear power station cavity group drainage system according to claim 3, it is characterised in that：It is described to discharge naturally
River directly connects outside pipeline (12) and massif, and the nature discharge tube (12) is from being connected to the third isolating valve (11)
Port there is downward gradient to being connected to outside massif between the port in river.
5. a kind of underground nuclear power station cavity group drainage system according to claim 3, it is characterised in that：The power discharge
Pipeline (14) is connected by draining pump (15) with river outside massif, entrance connection the 4th isolation of the draining pump (15)
Valve (13), the outlet connection massif outside river of the draining pump (15).
6. a kind of underground nuclear power station cavity group drainage system according to claim 5, it is characterised in that：At the radioactivity
Put room (8) and be arranged on underground, be additionally provided on the pipeline between the radioactivity office treatment (8) and the siphonic water-collecting well (9) the 5th every
From valve (16).
7. a kind of underground nuclear power station cavity group water discharge method carried out using system as claimed in claim 6, it is characterised in that：
To through the indoor ponding in underground nuclear power station hole that the drain bucket (1) flows out with the radiological monitor (2) into
Row monitoring,
When monitoring that ponding has radioactivity, the controller closes first isolating valve (3), and opens the second isolating valve
(4), have and be related to radioactive draining branch (7), and via the radioactivity office treatment (8) described in the entrance of radioactive ponding
The siphonic water-collecting well (9) is discharged into after disposition；
When ponding is not detected with radioactivity, the controller closes the second isolating valve (4), and opens the first isolating valve
(3), it is discharged into the siphonic water-collecting well (9) without radioactive ponding；
The ponding is discharged into outside massif through siphonic water-collecting well (9) in river.
8. a kind of underground nuclear power station cavity group water discharge method according to claim 7, it is characterised in that：
When the water level monitor detects that the water level of purpose discharge areas is higher than preset value, the controller opens described the
Four isolating valves (13) close the third isolating valve (11), and the ponding is by the draining pump (15) through the power delivery pipe
Road (14) is emitted into outside massif in river；
When the water level monitor detects that the water level of purpose discharge areas is not higher than the preset value, the controller is opened
The third isolating valve (11) closes the 4th isolating valve (13), and the ponding is discharged through the natural discharge tube (12)
Outside to massif in river.
9. according to a kind of underground nuclear power station cavity group water discharge method of 7 or 8 any one of them of claim, it is characterised in that：When
When major accident occurs for the nuclear reactor cavern, the 5th isolating valve (16) is closed, high radioactivity ponding is isolated in and is put
In penetrating property office treatment (8).
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| WO2015188695A1 (en) * | 2014-06-13 | 2015-12-17 | 长江勘测规划设计研究有限责任公司 | Construction layout of combined cavern group of underground nuclear power plant in depth direction of mountain |
| CN109281370B (en) * | 2018-10-08 | 2020-09-01 | 中国核电工程有限公司 | Drainage system of nuclear power |
| CN110534221B (en) * | 2019-09-06 | 2024-04-12 | 长江勘测规划设计研究有限责任公司 | Mobile waste liquid treatment system of underground nuclear power station |
| CN113936832B (en) * | 2021-09-14 | 2023-08-29 | 长江勘测规划设计研究有限责任公司 | Passive collection method for radioactive liquid of underground nuclear power station |
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