CN110354645A - A kind of passive online liquid supply device of containment filtration exhaust system and method - Google Patents
A kind of passive online liquid supply device of containment filtration exhaust system and method Download PDFInfo
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- CN110354645A CN110354645A CN201910541798.3A CN201910541798A CN110354645A CN 110354645 A CN110354645 A CN 110354645A CN 201910541798 A CN201910541798 A CN 201910541798A CN 110354645 A CN110354645 A CN 110354645A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/14—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols by absorption
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/14—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols by absorption
- B01D53/1487—Removing organic compounds
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/14—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols by absorption
- B01D53/18—Absorbing units; Liquid distributors therefor
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
- B01F25/00—Flow mixers; Mixers for falling materials, e.g. solid particles
- B01F25/30—Injector mixers
- B01F25/31—Injector mixers in conduits or tubes through which the main component flows
- B01F25/312—Injector mixers in conduits or tubes through which the main component flows with Venturi elements; Details thereof
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
- B01F35/00—Accessories for mixers; Auxiliary operations or auxiliary devices; Parts or details of general application
- B01F35/71—Feed mechanisms
- B01F35/712—Feed mechanisms for feeding fluids
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- G—PHYSICS
- G21—NUCLEAR PHYSICS; NUCLEAR ENGINEERING
- G21F—PROTECTION AGAINST X-RADIATION, GAMMA RADIATION, CORPUSCULAR RADIATION OR PARTICLE BOMBARDMENT; TREATING RADIOACTIVELY CONTAMINATED MATERIAL; DECONTAMINATION ARRANGEMENTS THEREFOR
- G21F9/00—Treating radioactively contaminated material; Decontamination arrangements therefor
- G21F9/02—Treating gases
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2257/00—Components to be removed
- B01D2257/20—Halogens or halogen compounds
- B01D2257/206—Organic halogen compounds
- B01D2257/2068—Iodine
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Abstract
The present invention provides a kind of passive online liquid supply device of containment filtration exhaust system and method, including several fluid infusion casees and replenishing line, several fluid infusion casees are located at the downstream of containment isolating valve, and are located at the upstream of venturi water wash vessel, have rinsing solution in several fluid infusion casees；One end of the replenishing line connects several fluid infusion case other ends and is connected to the venturi water wash vessel, controllably the rinsing solution in fluid infusion case is filled in the venturi water wash vessel, to the venturi water wash vessel fluid infusion.The present invention improves safety, reliability and the convenience of fluid infusion during filtering emission；Guarantee putting into operation for safety of the filtering emission system after major accident under more harsh conditions.
Description
Technical field
This technology invention is related to nuclear power plant field, and in particular to a kind of passive online fluid infusion of containment filtration exhaust system
Device and method.
Background technique
After major accident when containment superpressure, discharge gas is detained by the venturi water scrubber chemical solution being arranged outside shell
Elemental iodine, dissolubility aerosol and dissolubility organic iodine in body, the water scrub function and liquid level of venturi water scrubber have specific
The self-holding time and minimum requirements liquid level, when liquid level lower than minimum liquid level require when, need to venturi water scrubber into
Row fluid infusion is to maintain it effectively to filter water scrub function.
The liquid supply device that nuclear power unit uses at present has mobile active chemical liquid supply device and fixed active chemistry to mend
Liquid device.Mobile active chemical liquid supply device introduces water source from water charging system by Temporary connections, in chemical dosing tank into
After row chemical agent is dissolved, matched, mixing, venturi water scrubber is filled by active fluid infusion metering pump, to maintain venturi water
The liquid level of device is washed on effective liquid level, guarantees that function is detained in the washing of filtering emission.Fixed active chemical liquid supply device stream
Journey is similar to movable type, introduces water source from water charging system by fixed hard adapter tube, is added by the chemistry in fixed space in workshop
After carrying out chemical agent dissolution in medicine-chest, matching, mix, then fluid infusion pipeline isolating valve is opened manually, pass through dosing tank downstream
Active fluid infusion metering pump is filled with venturi water scrubber, to maintain the liquid level of venturi water scrubber on effective liquid level, guarantees
Function is detained in the washing of filter discharge.
But mobile liquid supply device fluid infusion process needs more personnel's cooperation, can also connect manually in the laggard administrative staff of major accident
Related mobile connecting leg is connect, the operating time is longer, leads to personnel being increased by irradiation risk at the scene.Meanwhile also resulting in workshop
Structures need to additionally reserve external pipe nozzle, and the integrality and leakproofness to workshop constitute challenge.Mobile liquid supply device passes through vehicle
Carrying is sent, the transport resource of on-site preciousness after consuming accident.Fixed liquid supply device need to be equipped with additional, reliable power electric
Source, while active fluid infusion process needs personnel to enter nuclear island factory building operation, it is also possible to matters are repaired after accident can be related to, lead to people
Member at the scene by irradiation risk increase.In view of personnel's shielding problem, barrier shield design can be more complicated, expends more material
Expect cost, engineering cost and duration cost.
When therefore, in order to solve progress fluid infusion existing in the prior art, personnel are needed to enter nuclear island factory building operation, and need to be into
The technical problems such as the additional distribution design of row, urgent need seek a kind of passive online fluid infusion of npp safety shell filtering emission system
System and method improves safety, reliability and the convenience of fluid infusion during filtering emission.
Summary of the invention
When the present invention is directed to the carry out fluid infusion in the presence of the prior art, personnel are needed to enter nuclear island factory building operation, and need to be into
The technical problems such as the additional distribution design of row provide a kind of passive online fluid infusion dress of npp safety shell filtering emission system
It sets and method.
The technical solution that the present invention is proposed with regard to above-mentioned technical problem is as follows: a kind of containment filtration exhaust system is passive
Online liquid supply device, which is characterized in that including several fluid infusion casees and replenishing line, several fluid infusion casees be located at containment every
Downstream from valve, and it is located at the upstream of venturi water wash vessel, there is rinsing solution in several fluid infusion casees；The liquid supplementation pipe
The one end on road connects several fluid infusion casees, and the other end is connected to the venturi water wash vessel, for controllably by fluid infusion
Rinsing solution in case is filled in the venturi water wash vessel, to the venturi water wash vessel fluid infusion.
In the above-mentioned passive online liquid supply device of the present invention, the replenishing line includes being arranged on the replenishing line
Several electronic fluid infusion isolating valves, the passive online liquid supply device further include control unit and setting venturi wash hold
Minimum liquid level monitor in device, described control unit connect several electronic fluid infusion isolating valves and minimum liquid level monitoring
Instrument when the liquid level for monitoring when the minimum liquid level monitor is lower than preset minimum liquid level, remotely controls several described
The unlatching of electronic fluid infusion isolating valve.
In the above-mentioned passive online liquid supply device of the present invention, the replenishing line includes main pipe road and multiple bye-passes,
The one end on the main pipe road connects the venturi water wash vessel, and the other end connects one end of multiple bye-passes, Duo Gesuo
The other end for stating bye-pass, which corresponds to, to be extended under several fluid infusion case rinsing solution liquid levels close to fluid infusion bottom portion.
In the above-mentioned passive online liquid supply device of the present invention, it is also correspondingly arranged a non-return valve on each bye-pass,
The downstream of each motor-operated isolation valve is arranged in each non-return valve, with when the motor-operated isolation valve is opened, is used for
Prevent the rinsing solution in the venturi water wash vessel from flowing back to the fluid infusion case.
In the above-mentioned passive online liquid supply device of the present invention, the passive online fluid infusion system further includes several pressure
Balance pipeline and the balance check valve being correspondingly arranged on each pressure-equalizing line, each pressure-equalizing line
One end extends to the fluid infusion case rinsing solution ullage, and the other end connects above venturi water wash vessel, and the balance is inverse
Only valve is for guaranteeing that the pressure of the fluid infusion case rinsing solution ullage is equal with the pressure in the venturi water wash vessel.
In the above-mentioned passive online liquid supply device of the present invention, the passive online fluid infusion system further includes pressure balance
Bye-pass and the bye-pass equilibrated valve being arranged on the pressure balance bye-pass, pressure balance bye-pass one end connect
The venturi water wash vessel is connect, the other end connects npp safety shell filtering emission pipeline, and the loine pressure balanced valve is used
Pressure in the guarantee npp safety shell filtering emission pipeline is equal with the pressure in the venturi water wash vessel, and
Prevent the rinsing solution in the venturi water wash vessel from flowing into the npp safety shell filtering emission pipeline.
In the above-mentioned passive online liquid supply device of the present invention, several fluid infusion casees are arranged in same level height,
And it is higher than the level height where the venturi water wash vessel, for realizing passive online fluid infusion.
In the above-mentioned passive online liquid supply device of the present invention, the material of several fluid infusion casees is to have anti-corrosion capability
Material, for avoid by the fluid infusion case rinsing solution corrosion.
The present invention also provides a kind of passive online liquid replenishing methods of containment filtration exhaust system, comprising: step S1, exists
The downstream of containment isolating valve, venturi water wash vessel upstream several fluid infusion casees are set, and to several fluid infusion casees
Inside it is filled with rinsing solution；Step S2, replenishing line is set, and the one end in fluid infusion circuit connects inside several fluid infusion casees, and
It extends to close to fluid infusion bottom portion under several fluid infusion case rinsing solution liquid levels, the other end is connected to the venturi water
Container is washed, controllably the rinsing solution in fluid infusion case is filled in the venturi water wash vessel, the venturi is washed
Container fluid infusion.
In the above-mentioned passive online liquid replenishing method of the present invention, several electronic fluid infusion isolation are set on the replenishing line
Valve, and control unit and minimum liquid level monitor are set, the step S2 is specifically included: setting replenishing line, and fluid infusion circuit
One end connect several fluid infusion casees, the other end is connected to the venturi water wash vessel；Judge the minimum liquid level monitoring
Whether the liquid level that instrument monitors is lower than preset minimum liquid level, if so, described control unit remotely control it is several described electronic
Fluid infusion isolating valve is opened, and the rinsing solution in fluid infusion case is filled in the venturi water wash vessel, is washed to the venturi
Container fluid infusion.
When technical solution provided by the invention has the benefit that the carry out fluid infusion in the presence of the prior art, need
Personnel enter nuclear island factory building operation, and need to carry out the technical problems such as additional distribution design, propose a kind of containment filtration row
The passive online liquid supply device of place system and method use passive online liquid supply device, increase pair on filtering emission pipeline
Reliability, convenience in venturi water scrubber fluid infusion, formed stablize fluid infusion in the case where, save active fluid infusion pump and its
Associated satellite equipment has saved power electric distribution design；Being additionally arranged electronic fluid infusion isolating valve reduces major accident descendant simultaneously
Member's manual operation fluid infusion time effectively reduces personnel by irradiation risk；And save the personnel of manually-operated gate teletransmission operation
Barrier shield design, optimizes Power house structure design, reduces structures design and construction cost, and engineering cost consuming is effectively reduced
And construction duration.
Detailed description of the invention
Fig. 1 is the passive online fluid infusion principle signal of a kind of containment filtration exhaust system that the embodiment of the present invention one provides
Figure；
Fig. 2 is the passive online liquid supply device structure of a kind of containment filtration exhaust system that the embodiment of the present invention one provides
Schematic diagram；
Fig. 3 is a kind of passive online liquid replenishing method process of containment filtration exhaust system provided by Embodiment 2 of the present invention
Figure.
Specific embodiment
When in order to solve the carry out fluid infusion in the presence of the prior art, personnel are needed to enter nuclear island factory building operation, and need to carry out
The technical problems such as additional distribution design, the present invention is intended to provide a kind of passive online fluid infusion dress of containment filtration exhaust system
It sets, core concept is: guaranteeing containment filtration exhaust system venturi water wash vessel using passive principle diversification combination
Effective water scrub function realizes the passive fluid infusion of filtering emission after accident, guarantees filtering emission system after major accident
Under more harsh conditions safety put into operation, be major accident after power plant technique center filtering emission open and fluid infusion implementation strategy
Technological guidance is provided.
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
Present invention implementation provides a kind of passive online liquid supply device of containment filtration exhaust system, for executing sternly
When weight accident, fluid infusion, containment filtration discharge system controllably are carried out to containment filtration exhaust system venturi water wash vessel
System mainly passes through for being filtered discharge to the radgas generated in containment under nuclear power plant's major accident operating condition
The radioactive substance in rinsing solution direct current discharge gas in venturi water wash vessel, and washed in venturi water wash vessel molten
The ability and liquid level of the delay radionuclide of liquid have specifically self-holding time and minimum requirements liquid level, work as liquid level
When requiring lower than minimum liquid level, fluid infusion need to be carried out to venturi water wash vessel to maintain it effectively to filter water scrub function, such as Fig. 1
Shown: passive online liquid supply device includes several fluid infusion casees 100, replenishing line 200, minimum liquid level monitor 20 and control
Unit 10 has rinsing solution in several fluid infusion casees 100；The material of several fluid infusion casees 100 is to have the material of anti-corrosion capability,
Preferably, its failure can be led to for avoiding several fluid infusion casees 100 due to being washed with water solution corrosion for stainless steel；Wherein, if
Filled with configured sodium hydroxide (NaOH) and sodium thiosulfate (Na in dry fluid infusion case 1002S2O3) mixed solution, for efficient
The radionuclide being detained in the npp safety shell filtering exhaust gases；And work as online liquid supply device and be in spare period,
Long-term liquid storage in several fluid infusion casees 100, it is spare at any time.Fluid infusion circuit 200 is connect with fluid infusion case 100, and control unit 10 connects respectively
Minimum liquid level monitor 20 and fluid infusion circuit 200 are connect, for monitoring in venturi water wash vessel when minimum liquid level monitor 20
Liquid level be lower than preset minimum liquid level when, control unit 10 control the fluid infusion into venturi water wash vessel of fluid infusion circuit 200.
Further, in conjunction with attached drawing 2, several fluid infusion casees 100 are located at the downstream of containment isolating valve, and are located at venturi water
The upstream of container is washed, it should be understood that the specific number of several fluid infusion casees 100 can be arranged according to Practical Project demand and workshop
Situation preferentially determines；4 fluid infusion casees are equipped in one embodiment of the invention, respectively along from containment isolating valve
The first fluid infusion case 110, the second fluid infusion case 120, third fluid infusion case 130 and the 4th fluid infusion case on to venturi water wash vessel direction
140, wherein the first fluid infusion case 110, the second fluid infusion case 120, third fluid infusion case 130 and the 4th fluid infusion case 140 dischargeable capacity can
It is preferentially determined according to Practical Project demand and workshop deployment scenarios, but the first fluid infusion case 110, the second fluid infusion case 120, third are mended
Wherein one or more combinations of liquid case 130 and the 4th fluid infusion case 140 need that rinsing solution benefit in venturi water wash vessel can be arrived
Put into operation required normal level, while can guarantee the long-term of filtering emission function and repeatedly putting into operation.And it should be understood that this Shen
Please in the first fluid infusion case 110, the second fluid infusion case 120, third fluid infusion case 130 and the 4th fluid infusion case 140 all have anti-seismic performance,
The service ability of fluid infusion case 100 in the case of seismic events is improved, the safety of fluid infusion system is improved.
One end of replenishing line 200 connects inside several fluid infusion casees 100, and extends to several 100 rinsing solutions of fluid infusion case
Close to 100 bottom of fluid infusion case under liquid level, the other end is connected to venturi water wash vessel, and being used for controllably will be in fluid infusion case 100
Rinsing solution be filled in venturi water wash vessel, to venturi water wash vessel fluid infusion.
Further, by Fig. 2 it can be seen that the first fluid infusion case 110, the second fluid infusion case 120,130 and of third fluid infusion case
4th fluid infusion case 140 is arranged in same level height, and the bottom of fluid infusion case 100 is higher than where at the top of venturi water wash vessel
Level height, for realizing passive online fluid infusion, i.e., when needing fluid infusion, under the effect of gravity, the first fluid infusion case 110,
Rinsing solution in second fluid infusion case 120, third fluid infusion case 130 and the 4th fluid infusion case 140 flow to Wen Qiu by replenishing line 200
In water wash vessel, realize fluid infusion to venturi water wash vessel.
Specifically, replenishing line 200 includes main pipe road 210 and multiple bye-passes 220, and the one end on main pipe road 210 connects text
Water wash vessel in mound, the other end connect one end of multiple bye-passes 220, if the other end correspondence of multiple bye-passes 220 extends to
Close to 100 bottom of fluid infusion case under dry 100 rinsing solution liquid level of fluid infusion case.Further, multiple bye-passes 220 include extending to the
Close to the first bye-pass 221 of 110 bottom of the first fluid infusion case under one fluid infusion case, 110 rinsing solution liquid level, the second fluid infusion is extended to
Close to the second bye-pass 222 of 120 bottom of the second fluid infusion case under 120 rinsing solution liquid level of case, 130 water of third fluid infusion case is extended to
Under dilution liquid level close to 130 bottom of third fluid infusion case third bye-pass 223 and extend to the 4th fluid infusion case 140 wash it is molten
Close to the 4th bye-pass 224 of 140 bottom of the 4th fluid infusion case under liquid liquid level.It should be noted that utilizing multiple bye-pass
220, it can be attached with multiple fluid infusion casees 100, so as to realize rapid fluid replacement, that is to say, that when certain fluid infusion case 100 damages
Bad when, can use one of bye-pass 220 and connect another fluid infusion case 100, realize that the washing in venturi water wash vessel is molten
Liquid fluid infusion demand guarantees that the rinsing solution liquid level in water wash vessel meets the requirements；It can also realize simultaneously, when needs are quickly mended
When liquid, multiple fluid infusion casees 100 can carry out rapid fluid replacement by multiple bye-passes 220, improve fluid infusion efficiency.
Further, by Fig. 2 it is also seen that: the first bye-pass 221, the second bye-pass 222, third bye-pass 223 with
And the 4th respectively correspond setting the first electronic fluid infusion isolating valve 231, the second electronic fluid infusion isolating valve 232, third on bye-pass 224
Electronic fluid infusion isolating valve 233 and the 4th electronic fluid infusion isolating valve 234, for remotely the first electronic fluid infusion of control of control unit 10
Isolating valve 231, the second electronic fluid infusion isolating valve 232, the electronic fluid infusion isolating valve 233 of third and the 4th electronic fluid infusion isolating valve
234 opening and closing, specifically: minimum liquid level monitor 20, the liquid in real-time monitoring Venturi container are provided in Venturi container
Face height, when the liquid level in Venturi container is lower than preset minimum liquid level, minimum liquid level monitor 20 is by liquid level height
Degree is transmitted to control unit 10 lower than the signal of preset minimum liquid level, and it is electronic to first that control unit 10 receives this signal
The electronic fluid infusion isolating valve 233 of fluid infusion isolating valve 231, the second electronic fluid infusion isolating valve 232, third and the 4th electronic fluid infusion isolation
Valve 234 issues open command, the under the effect of gravity fluid infusion into Venturi container；Increase for venturi water wash vessel fluid infusion
Convenience, avoid operator by irradiation dose risk, while also save manually-operated gate teletransmission operation personnel shielding
Wall design, optimizes Power house structure design, reduces structures design and construction cost, and engineering cost is effectively reduced and expends and builds
Make the duration.
Further, it is additionally provided with highest liquid level monitor 30 in venturi water wash vessel, when highest liquid level monitor 30
When the liquid level monitored is higher than preset highest liquid level, this signal is transmitted to control unit, control unit 10 receives
This signal to the first electronic fluid infusion isolating valve 231, the second electronic fluid infusion isolating valve 232, the electronic fluid infusion isolating valve 233 of third with
And the 4th electronic fluid infusion isolating valve 234 issue out code, stop the fluid infusion into Venturi container.Pass through above-mentioned control unit
10, it can be achieved that online fluid infusion to Venturi container, increases the reliability for venturi water wash vessel fluid infusion, guarantees venturi
Rinsing solution in water wash vessel can effectively be detained the radionuclide in containment discharge gas always.
Further, by Fig. 2 it can be seen that the first bye-pass 221, the second bye-pass 222, third bye-pass 223 with
And the 4th be also correspondingly arranged the first non-return valve 241, the second non-return valve 242, third non-return valve 243 and the 4th on bye-pass 224
Non-return valve 244, and the first non-return valve 241, the second non-return valve 242, third non-return valve 243 and the 4th non-return valve 244 are located at the
One electronic fluid infusion isolating valve 231, the second electronic fluid infusion isolating valve 232, the electronic fluid infusion isolating valve 233 of third and the 4th electronic benefit
234 downstream of liquid isolating valve, for when the first electronic fluid infusion isolating valve 231, the second electronic fluid infusion isolating valve 232, the electronic benefit of third
When liquid isolating valve 233 and the 4th electronic fluid infusion isolating valve 234 are opened, prevent the rinsing solution in venturi water wash vessel from flowing backwards
Cover liquid case 100.It should be understood that the first non-return valve 241, the second non-return valve 242, third non-return valve 243 and the 4th are inverse
Only valve 244 can be opened and closed manually or automatically, its manual opening-closing is such as arranged, then electronic according to the first electronic fluid infusion isolating valve 231, second
The open/close states of the electronic fluid infusion isolating valve 233 of fluid infusion isolating valve 232, third and the 4th electronic fluid infusion isolating valve 234, operator
Member manually controls the first non-return valve 241, the second non-return valve 242, third non-return valve 243 and the opening and closing of the 4th non-return valve 244；Such as set
Its automatic open close is set, then the first non-return valve 241, the second non-return valve 242, third non-return valve 243 and the 4th non-return valve 244 connect
Be connected to control unit 10, when control unit 10 receive the first electronic fluid infusion isolating valve 231, the second electronic fluid infusion isolating valve 232,
When the electronic fluid infusion isolating valve 233 of third and the 4th electronic 234 open/close states of fluid infusion isolating valve, control unit 10 automatically controls the
One non-return valve 241, the second non-return valve 242, third non-return valve 243 and the opening and closing of the 4th non-return valve 244.
Further, by can also be seen that in Fig. 2: passive online fluid infusion system further includes first pressure balance pipeline
310, second pressure balance pipeline 320, third pressure-equalizing line 330 and the 4th pressure-equalizing line 340, and correspondence are set
It sets flat in first pressure balance pipeline 310, second pressure balance pipeline 320, third pressure-equalizing line 330 and the 4th pressure
The first balance check valve 311, the second balance check valve 321, third balance check valve 331 and the Siping City to weigh on pipeline 340
Weigh non-return valve 341, and first pressure balances pipeline 310, second pressure balance pipeline 320, third pressure-equalizing line 330 and the
One end of four pressure-equalizing lines 340 extend respectively to the first fluid infusion case 110, the second fluid infusion case 120, third fluid infusion case 130 with
And 140 rinsing solution ullage of the 4th fluid infusion case, the other end connect venturi water wash vessel, the first balance check valve 311, the
Two balance check valves 321, third balance check valve 331 and the 4th balance check valve 341 for guarantee the first fluid infusion case 110,
The pressure and venturi water of 140 rinsing solution ullage of second fluid infusion case 120, third fluid infusion case 130 and the 4th fluid infusion case
The pressure washed in container is equal, realizes its passive fluid infusion, further, by Fig. 2 it can be seen that passive online fluid infusion system
System further includes pressure balance bye-pass 400 and the bye-pass equilibrated valve 401 being arranged on pressure balance bye-pass 400, pressure
400 one end of dynamic balance bye-pass connects venturi water wash vessel, and the other end connects npp safety shell filtering emission pipeline, pipeline
Equilibrated valve 401 is used to guarantee the pressure in npp safety shell filtering emission pipeline and the pressure in venturi water wash vessel
It is equal, and prevent the rinsing solution in venturi water wash vessel from flowing into npp safety shell filtering emission pipeline.Further protect
Demonstrate,prove the safe and effective operation of online liquid supply device.It should be understood that the first balance check valve 311, the second balance check valve
321, third balance check valve 331, the 4th balance check valve 341 and bye-pass equilibrated valve 401 can be opened manually or automatically
It closes, is manual opening-closing if opening ways are arranged in it, then when system starts fluid infusion, manually opened first balance check valve 311, the
Two balance check valves 321, third balance check valve 331, the 4th balance check valve 341 and bye-pass equilibrated valve 401, such as
It is to automatically turn on that opening ways, which are arranged, in it, then the first balance check valve 311, the second balance check valve 321, third balance check valve
331, the 4th balance check valve 341 and bye-pass equilibrated valve 401 are all connected with control unit 10, when system starts fluid infusion
When, control unit 10 controls the first balance check valve 311, the second balance check valve 321, third balance check valve 331, Siping City
Weigh non-return valve 341 and bye-pass equilibrated valve 401.
By being also seen that in Fig. 2: containment filtration exhaust system includes containment, and the gas generated in containment is conveyed
Filtering emission pipeline outside to containment, and the venturi water wash vessel, the metal that are successively set on filtering emission pipeline are fine
Dimensional filter device, critical flow orifice plate, rupture disk, radiological monitoring instrument and chimney；Wherein, there are two being also set up on filtering emission pipeline
Containment isolating valve is used in major accident, according to containment comprehensive assessment as a result, teletransmission operates two containment isolating valves
Opening and closing.Further, critical flow orifice plate input terminal is connect with metal fiber filter output end, for guaranteeing containment filtration
Exhaust system is run in a manner of sliding pressure, guarantees the safety of containment filtration exhaust system operation；The connection of rupture disk input terminal is faced
Boundary's discharge orifice plate output end, for when containment exhaust system pressure reaches default value, rupture disk rupture, discharge gas to be able to
Release；Radiological monitoring instrument input terminal connects rupture disk output end, and output end connects controller, exports for real-time monitoring rupture disk
Gas radioactivity, generate discharge gas radioactivity monitoring as a result, if discharge gas radioactivity monitoring result meet atmosphere row
Requirement is put, then discharge gas is emitted by atmosphere by chimney, if being unsatisfactory for atmosphere emission request, controller issues instruction,
Two containment isolating valves are closed.Further, containment filtration exhaust system further includes being arranged on filtering emission pipeline
Balanced valve and the safety valve that is connected in parallel with balanced valve, balanced valve input terminal connect with metal fiber filter output end,
Balanced valve output end is connect with critical flow orifice plate input terminal, for closing balanced valve when containment exhaust system needs to overhaul,
Discharge gas is prevented to be emitted into atmosphere；Safety valve is connect with the pressure detecting instrument being arranged in inside venturi water wash vessel, is used
In when pressure detecting instrument detects in venturi water wash vessel that pressure is more than preset maximum pressure, either manually or by controller
It automatically opens safety valve and carries out release, guarantee the safety of containment filtration exhaust system, by being also seen that in Fig. 2: containment mistake
Filtering exhaust system further includes the nitrogen supplementary loop connecting with venturi water wash vessel, and the nitrogen being arranged in nitrogen supplementary loop
Gas isolating valve, nitrogen non-return valve and nitrogen cylinder, nitrogen isolating valve, nitrogen non-return valve and control.Further, containment filtration
Exhaust system further includes the waste reflux circuit for connecting venturi water wash vessel and containment, and is arranged on waste reflux circuit
Two waste reflux valves manually or automatically control two waste liquids and return for when containment filtration exhaust system needs to overhaul
It flows valve to open, realizes passive waste reflux, specifically: if waste reflux hair is to manually control, when being overhauled,
Operator manually controls the unlatching of waste reflux valve, realizes waste reflux；If waste reflux is to automatically control, two waste liquids are returned
Stream valve is separately connected controller, and controller receives the order for needing to overhaul, and automatically controls two waste reflux valves and opens, realizes
Passive waste reflux.It should be understood that passing through connection when needing for the rinsing solution in venturi water wash vessel to be discharged
The drain interface of venturi water wash vessel realizes drain.
Embodiment two
The embodiment of the invention provides a kind of passive online liquid replenishing methods of containment filtration exhaust system, as shown in figure 3,
Include:
Step S1, several fluid infusion casees are set in the upstream of the downstream of containment isolating valve, venturi water wash vessel, and if to
Rinsing solution is filled in dry fluid infusion case；The material of several fluid infusion casees 100 is to have the material of anti-corrosion capability, it is preferable that can be
Stainless steel leads to its failure for avoiding several fluid infusion casees 100 due to being washed with water solution corrosion；Wherein, several fluid infusion casees 100
It is interior filled with configured sodium hydroxide (NaOH) and sodium thiosulfate (Na2S2O3) mixed solution, for being efficiently detained the nuclear power
Radionuclide in factory's containment filtration discharge gas；And when online liquid supply device is in spare period, several fluid infusion casees 100
Interior long-term liquid storage, it is spare at any time.It should be understood that the specific number of several fluid infusion casees 100 can according to Practical Project demand and
Workshop deployment scenarios preferentially determine；When the damage of certain fluid infusion case 100, one of fluid infusion case 100 can use, realize venturi
Rinsing solution fluid infusion demand in water wash vessel guarantees that the rinsing solution liquid level in water wash vessel meets the requirements；Simultaneously
It can be achieved, when needing rapid fluid replacement, multiple fluid infusion casees 100 carry out rapid fluid replacement simultaneously, improve fluid infusion efficiency.
Step S2, replenishing line 200 is set, and the one end in fluid infusion circuit 200 connects inside several fluid infusion casees 100, and prolongs
It extending to close to 100 bottom of fluid infusion case under several 100 rinsing solution liquid levels of fluid infusion case, the other end is connected to venturi water wash vessel,
Controllably the rinsing solution in fluid infusion case 100 is filled in the venturi water wash vessel, to the venturi water wash vessel
Fluid infusion.
Specifically, several electronic fluid infusion isolating valves 230 are set on replenishing line 200, and control unit 10, minimum liquid are set
Position monitor 20 and highest Level meter 30, the step S2 are specifically included: the one end in fluid infusion circuit 200 connects several fluid infusion
Case 100, the other end are connected to venturi water wash vessel；It is default to judge whether liquid level that minimum liquid level monitor 20 monitors is lower than
Minimum liquid level, opened if so, control unit 10 remotely controls several electronic fluid infusion isolating valves 230, will be in fluid infusion case 100
Rinsing solution is filled in venturi water wash vessel, to the venturi water wash vessel fluid infusion；If highest liquid level monitor 30 monitors
The liquid level arrived is higher than preset highest liquid level, then control unit 10 remotely controls several electronic fluid infusion isolating valves 230 and closes, and stops
The fluid infusion into venturi water wash vessel.By above-mentioned control unit, it can be achieved that online fluid infusion to Venturi container, increase for
The reliability of venturi water wash vessel fluid infusion guarantees that the rinsing solution in Venturi container can effectively be detained containment always
Radionuclide in discharge gas.
In conclusion the invention proposes a kind of passive online liquid supply device of containment filtration exhaust system and method,
By the way that the height of fluid infusion case to be positioned above to the height of venturi water wash vessel, the purpose of passive fluid infusion, increase pair are realized
In the convenience of venturi water wash vessel fluid infusion, at the same also avoid operator by irradiation dose risk, realize in shape
In the case where stablizing fluid infusion, active fluid infusion pump and its associated satellite equipment are saved, saves the purpose of power electric distribution design；Together
When, when reducing personnel after major accident by setting Level meter, control unit and motor-operated isolation valve fluid infusion be manually operated
Between, personnel are effectively reduced by irradiation risk, are saved personnel's barrier shield design of manually-operated gate teletransmission operation, are optimized workshop
Structure design reduces structures design and construction cost, and engineering cost consuming and construction duration is effectively reduced, further,
Multiple fluid infusion casees are set, it can be achieved that quickly carrying out fluid infusion to venturi water wash vessel, save the fluid infusion time, improve fluid infusion efficiency.
The foregoing is merely presently preferred embodiments of the present invention, is not intended to limit the invention, it is all in spirit of the invention and
Within principle, any modification, equivalent replacement, improvement and so on be should all be included in the protection scope of the present invention.
Claims (10)
1. a kind of passive online liquid supply device of containment filtration exhaust system, which is characterized in that including several fluid infusion casees (100)
And replenishing line (200),
Several fluid infusion casees (100) are located at the downstream of containment isolating valve, and are located at the upstream of venturi water wash vessel, and if
It does in the fluid infusion case (100) and has rinsing solution；
One end of the replenishing line (200) connects several fluid infusion casees (100), and the other end is connected to the venturi washing
Rinsing solution in the fluid infusion case (100) is controllably filled in the venturi water wash vessel by container, to the literary mound
In water wash vessel fluid infusion.
2. passive online liquid supply device according to claim 1, which is characterized in that the replenishing line (200) includes
Several electronic fluid infusion isolating valves (230) being arranged on the replenishing line (200),
The passive online liquid supply device further includes control unit (10) and the minimum liquid that is arranged in venturi water wash vessel
Position monitor (20), described control unit (10) connect several electronic fluid infusion isolating valves (230) and minimum liquid level prison
It surveys instrument (20), for remotely controlling when the liquid level that the minimum liquid level monitor (20) monitors is lower than preset minimum liquid level
Make the unlatching of several electronic fluid infusion isolating valves (230).
3. passive online liquid supply device according to claim 2, which is characterized in that the replenishing line (200) includes
Main pipe road (210) and multiple bye-passes (220), one end of the main pipe road (210) connects the venturi water wash vessel, another
End connects one end of multiple bye-passes (220), and the other end correspondence of multiple bye-passes (220) extends to several described
Close to fluid infusion case (100) bottom under fluid infusion case (100) rinsing solution liquid level, and it is corresponding on each bye-pass (220)
It connects an electronic fluid infusion isolating valve (230).
4. passive online liquid supply device according to claim 3, which is characterized in that also corresponding on each bye-pass
It connects a non-return valve (240), each non-return valve (240) is correspondingly arranged at each electronic fluid infusion isolating valve (230)
Downstream, for preventing the rinsing solution in the venturi water wash vessel from falling when the electronic fluid infusion isolating valve (230) is opened
Flow back to the fluid infusion case (100).
5. passive online liquid supply device according to claim 4, which is characterized in that the passive online fluid infusion system
The balance check for further including several pressure-equalizing lines (300) and being correspondingly arranged on each pressure-equalizing line (300)
Valve (301), one end of each pressure-equalizing line (300) extend to fluid infusion case (100) the rinsing solution ullage,
The other end connects above venturi water wash vessel, and the balance check valve (301) is molten for guaranteeing fluid infusion case (100) washing
The pressure of liquid ullage is equal with the pressure in the venturi water wash vessel.
6. passive online liquid supply device according to claim 5, which is characterized in that the passive online fluid infusion system
The bye-pass equilibrated valve for further including pressure balance bye-pass (400) and being arranged on the pressure balance bye-pass (400)
(401), described pressure balance bye-pass (400) one end connects the venturi water wash vessel, and the other end connects npp safety
Shell filtering emission pipeline, the loine pressure balanced valve (401) is for guaranteeing ullage in the venturi water wash vessel
Pressure is equal with the pressure in the npp safety shell filtering emission pipeline, and prevents the water in the venturi water wash vessel
Dilution flows into the npp safety shell filtering emission pipeline.
7. passive online liquid supply device according to claim 6, which is characterized in that several fluid infusion casees (100) set
It sets in same level height, and the bottom of the fluid infusion case (100) is higher than the water where at the top of the venturi water wash vessel
Flat height, for realizing passive online fluid infusion.
8. passive online liquid supply device according to claim 7, which is characterized in that several fluid infusion casees (100)
Material is to have the material of anti-corrosion capability, for avoiding by the rinsing solution corrosion in the fluid infusion case.
9. a kind of passive online liquid replenishing method of containment filtration exhaust system characterized by comprising
Step S1, in several fluid infusion casees (100) of the upstream of the downstream of containment isolating valve, venturi water wash vessel setting, and to
Rinsing solution is filled in several fluid infusion casees (100)；
Step S2, replenishing line (200) are set, and the one end of fluid infusion circuit (200) connects several fluid infusion casees (100), separately
One end is connected to the venturi water wash vessel, and the rinsing solution in fluid infusion case (100) is controllably filled with the venturi
In water wash vessel, to the venturi water wash vessel fluid infusion.
10. passive online liquid replenishing method according to claim 9, which is characterized in that on the replenishing line (200)
Several electronic fluid infusion isolating valves (230) are set, and control unit (10) and minimum liquid level monitor (20) are set, the step S2
It specifically includes:
It is arranged replenishing line (200), and the one end of fluid infusion circuit (200) connects several fluid infusion casees (100), other end connection
To the venturi water wash vessel；It is preset minimum to judge whether liquid level that the minimum liquid level monitor (20) monitors is lower than
Liquid level is opened if so, described control unit (10) remotely controls several electronic fluid infusion isolating valves (230), by fluid infusion case
(100) rinsing solution in is filled in the venturi water wash vessel, to the venturi water wash vessel fluid infusion.
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