CN109065193A - A kind of double cooling irradiation test system and methods - Google Patents
A kind of double cooling irradiation test system and methods Download PDFInfo
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- CN109065193A CN109065193A CN201810842668.9A CN201810842668A CN109065193A CN 109065193 A CN109065193 A CN 109065193A CN 201810842668 A CN201810842668 A CN 201810842668A CN 109065193 A CN109065193 A CN 109065193A
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- G—PHYSICS
- G21—NUCLEAR PHYSICS; NUCLEAR ENGINEERING
- G21C—NUCLEAR REACTORS
- G21C17/00—Monitoring; Testing ; Maintaining
- G21C17/10—Structural combination of fuel element, control rod, reactor core, or moderator structure with sensitive instruments, e.g. for measuring radioactivity, strain
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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
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- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
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Abstract
The invention discloses a kind of double cooling irradiation test system and methods.It is made of main cooling system, water jacket cooling system, secondary cooling system and matched purification and moisturizing etc..Main cooling system is high temperature and pressure circuit, can isolated operation；Water jacket cooling belongs to low-temp low-pressure circuit, can isolated operation；The two can be run simultaneously parallel.One kind is that all while alone cooling cycle flows for main cooling system and water jacket cooling system, and the fever in pressure pipe is taken out of by main cooling water, and the fever outside pressure pipe is taken out of by jacket water.Another kind is that main cooling system is static or micrometeor flowing, the inside and outside fever of pressure pipe are all taken away by the cooling system circulation flowing of water jacket.The present invention is applied to nuclear material and fuel element heap homeostasis irradiation test, power transience are tested, fuel degradation is tested, water chemistry corrosion test, isotopic irradiation production etc. in heap.
Description
Technical field
The present invention relates to nuclear material and fuel in-pile test fields, and in particular to a kind of pair of cooling irradiation test systems and side
Method can carry out the irradiation test and production method of various working simulation in heap to nuclear material and fuel, isotope target piece etc., answer
For the test of the steady state irradiation of nuclear material and fuel, power transience test, failed element test, water chemistry corrosion test in heap,
A variety of occasions such as Isotope production.
Background technique
Nuclear material and fuel in-pile test are one of important scientific research missions of research reactor, for example are researching and developing novel nuclear fuel member
When part, it is necessary to carry out a large amount of steady state irradiation test, power jumping test, in-pile corrosion test etc..Both at home and abroad in research reactor
It is very crucial technology that various circuits, which are built, to evaluate its irradiation behaviour and safety, for example Japan is on JMTR heap, Sweden
Studsvik on R2 heap, Russia on MIR heap, Belgium SCK-CEN on BR2 heap, it is French in OSIRIS research reactor
High temperature and pressure test circuit has all been built respectively, the steady state irradiation experimental study for nuclear fuel element.The advantages of test loop
Be can extreme environment in simulation heap the truest, very big heat can be spread out of.It, can be with such as high temperature and pressure test circuit
It is considered the presurized water reactor of a miniaturization, is mainly used for simulating the fuel element service condition under PWR operating condition, such as fuel rod line
Power, coolant pressure, flow velocity, temperature and chemical environment of water etc..But its cost of investment is very high, builds function for single operating condition
It is few, cause utilization rate lower.Therefore a high safety is designed, multi-functional, inexpensive irradiation test system has experimental study
There is great significance.
Radioisotopic irradiation production is the vital task of research reactor, guarantees that the radiation parameter of target piece and process are direct
It is related to the safety of isotope yield and reactor.Wherein key condition first is that being always ensured that the temperature of target piece in irradiation process
Degree and integrality.For different target and radiation parameter, target piece external target barrel temperature how to be made to be no more than temperature limit, to meet
The intensity requirement of target piece.It must try to establish the cooling target piece of special cooling circuit, different target calorific value is also different,
And divide solid target, liquid target and gas target, need to cool down by different cooling circuits, individually establish target piece irradiation loop at
This is big, utilization rate is low, therefore comprehensively considers to establish one while being suitable for the cooling circuit of target piece irradiation and have to Isotope production
It is significant.
Summary of the invention
The purpose of the present invention is to provide a kind of pair of nuclear materials and fuel, isotope target piece to carry out the double cooling of in-pile irradiation
System irradiation test system and method can run under various working, it is quiet can to simulate high temperature and pressure circumstance of flowing water, high temperature and pressure
Water environment, low-temp low-pressure circumstance of flowing water, chemical environment of water test etc. can split failed element generation using the water jacket type of cooling
It sells of one's property object to be protected, high-risk Isotope production can also be protected, reach maltilevel security guarantee, to nuclear fuel and material
The test of heap homeostasis, transient test, crash test, the production of water chemistry corrosion test and isotope plays a significant role.
The present invention is achieved through the following technical solutions:
The invention proposes a kind of double cooling irradiation test systems, which is characterized in that including irradiation devices, main cooling system
System, water jacket cooling system, secondary cooling system and water charging system；
The main cooling system circuit is connected with the pressure pipe of irradiation devices inlet and outlet, forms high temperature and pressure circuit；It is described
The cooling system circuit of water jacket is connected with the protection pipe of irradiation devices inlet and outlet, forms low-temp low-pressure circuit；The main cooling system
It is all finally cooled down by secondary cooling system with the water jacket cooling system；The water charging system is respectively the main cooling
System and the cooling system water supplement of the water jacket.
Specifically, the main cooling system includes at least 1 main circulation pump, main heat exchanger, voltage-stablizer and main cooling and purifying
Section；The voltage-stablizer is for controlling main cooling system pressure；Main Coolant is driven by main circulation pump, flow to irradiation through main circulation pump
End entrance on the pressure pipe of fuel element is accommodated in device, and fuel element surface is flowed through in pressure pipe, passes through pressure pipe later
Upper end outlet flows out irradiation devices, secondary cooling system is transferred heat to through main heat exchanger, by the cooling of secondary cooling system
Water coolant after cooling flows out main heat exchanger, is back to the entrance of main circulation pump, completes a circulation；The water charging system with
The main cooling and purifying section is connected, and the deionized water that the water charging system provides flows into major cycle by main cooling and purifying section and is pumped into
Mouthful.
Specifically, the main cooling and purifying section includes regenerative purification heat exchanger, fore filter, post-filter, extremely
Few 2 ion exchange columns, doser and sampling analysis device；The high-temperature high pressure water of certain flow is drawn in the main circulation pump outlet,
Heat exchanger cooling is purified by regenerative to flow out from cooling section, through fore filter, then is flowed into ion exchange column, is again passed through postposition
Filter after the regenerator section heating of regenerative purification heat exchanger, and flows back to main circulation pump entrance, completes a local circulation；
After the regenerator section heating that the deionized water of water charging system outlet outflow flow to regenerative purification heat exchanger, into main circulation pump
Entrance；The sampling analysis device is arranged between the outlet of entrance and post-filter of fore filter；The doser is set
It sets on the pipeline between the outlet of post-filter and regenerative purification heat exchanger, for adjusting the water quality of main cooling system.
Specifically, the main cooling system further includes electric heater；The Surge line piping of the voltage-stablizer is connected to main heat exchanger
Outlet and main circulation pump entrance between pipeline on, the spray tube of the voltage-stablizer be connected to main circulation pump outlet, it is described
Pilot operated safety valve is provided on voltage-stablizer；The electric heater setting exports to enter with the irradiation devices in the main circulation pump
On pipeline between mouthful, for automatically adjusting to main cooling system inlet temperature；It is set on the by-pass line of main circulation pump
Electric control valve is set, the coolant flow of irradiation devices is flowed through for shunt regulating；It is arranged on the by-pass line of main heat exchanger
Electric control valve, for adjusting the coolant flow for entering main heat exchanger；Main cooling system liquid level is carried out by the voltage-stablizer
Instruction adjusts main cooling system liquid level by main cooling circuit small pump.
Specifically, the water jacket cooling system includes at least 1 water jacket circulating pump, water jacket heat exchanger, holds and mend device and water jacket
Cooling and purifying section；The pressure held benefit device and be used to adjust water jacket cooling system；Water jacket coolant is driven by water jacket circulating pump, warp
It flow in irradiation devices end entrance in protection pipe after water jacket circulating-pump outlet, test material or target piece table are flowed through in protection pipe
Face flows out irradiation devices by protection pipe upper end outlet later and transfers heat to secondary cooling system through water jacket heat exchanger,
By the cooling water of secondary cooling system coolant flow water outlet sleeve heat exchanger after cooling, it is back to the entrance of water jacket circulating pump, it is complete
It is recycled at one；The water charging system is connected with the cooling clean-up stage of the water jacket, the deionization water flow that the water charging system provides
Enter water jacket pump entry.
Specifically, the cooling clean-up stage of the water jacket includes fore filter, post-filter and at least 2 ion exchanges
Column；The water jacket circulating-pump outlet draws the water of certain flow, successively by fore filter, ion exchange column and postposition filtering
Device, then the entrance of water jacket circulating pump is flowed back to, complete a local circulation.
Specifically, the water jacket cooling system further includes electric heater；The Surge line piping for holding benefit device is connected to water jacket and changes
On pipeline between hot device outlet and water jacket pump entry, the appearance mends and is provided with spring loaded safety valve on device；The electricity adds
Hot device is arranged on the pipeline between the water jacket circulating-pump outlet and the irradiation devices entrance, for water jacket cooling system
Inlet temperature automatically adjusts；Electric control valve is set on the by-pass line of water jacket circulating pump, is flowed through for shunt regulating
The coolant flow of irradiation devices；Electric control valve is set on the by-pass line of water jacket heat exchanger, enters water jacket for adjusting
The coolant flow of heat exchanger；The cooling system liquid level of water jacket is indicated by holding benefit device, passes through water jacket cooling circuit small pump
Adjust the cooling system liquid level of water jacket.
Specifically, being separated in irradiation devices by pressure pipe etc. between the main cooling system and water jacket cooling system
It opens；Settable insulating air gap or heat-insulating material outside pressure pipe, for preventing the heat transmitting between two systems；The water jacket is cooling
It is isolated in irradiation devices by protection pipe between system and research reactor main cooling system, and the cooling system pressure of water jacket is set as
Less than research reactor main cooling system pressure.
Specifically, the main heat exchanger and purification heat exchanger are regenerative tubulation casing type heat exchanger, regenerator section is tubulation
Type structure, cooling section are thimble tube structure, reduce thermal stress for high temperature and high pressure environment；The water jacket heat exchanger is multipaths pipe
Shell heat exchanger or plate heat exchanger are used for low-temp low-pressure environment.
Specifically, the secondary cooling system includes pond and at least 1 secondary cooling water pump；Pond storage is full originally
Water, is driven by secondary cooling water pump, and main heat exchanger and water jacket heat exchanger are flowed separately through after shunting, is pooled to secondary cooling water later
General pipeline is discharged after being monitored or processing.
Specifically, the water charging system includes feed pump, at least 2 ion exchange columns, filter, water supply tank, main cooling
Circuit small pump, water jacket cooling circuit small pump and electric heater；Deionized water is driven by feed pump, is removed through ion exchange column
After oxygen, purified treatment, filter is passed through, flows into water supply tank；Main cooling system moisturizing is passed through by the deionized water that water supply tank comes out
The regenerator section heating of the regenerative purification heat exchanger is flow to after the pressurization of main cooling circuit small pump, then after being heated up by electric heater
Main circulation pump entrance is flowed into afterwards；The deionized water that the cooling system water supplement of water jacket is come out by water supply tank is by water jacket cooling circuit small pump
Water jacket pump entry is flowed directly into after pressurization.
On the other hand, based on above-mentioned double cooling irradiation test systems, the invention also provides a kind of double cooling irradiation examinations
Proved recipe method, the test method at least run following any operating conditions:
Operating condition one is capable of providing the thermal-hydraulic and chemical environment of water of high temperature and pressure when main cooling system is used alone, and presses
The fever of test specimen or fuel element in solenoid is taken out of by Main Coolant, then passes to secondary cooling water by main heat exchanger；
Operating condition two is capable of providing the thermal-hydraulic environment of low-temp low-pressure when water jacket cooling system is used alone, in protection pipe
Irradiation devices material or the fever of radioactive isotope target piece taken out of by water jacket coolant, give two by water jacket heat exchanger transfer
Secondary cooling water；
Operating condition three, main cooling system is static or micrometeor flowing and when the cooling system circulation flowing heat transfer of water jacket, test sample
Product or fuel element fever first pass to the static Main Coolant on the inside of pressure pipe, then are transmitted by Main Coolant by pressure tube wall
To the water jacket coolant in outside, the fever of irradiation devices or helium -3 screen (n, p) nuclear reaction outside pressure pipe is also by water jacket coolant
It takes out of together, and by water jacket heat exchanger transfer to secondary cooling water；
When operating condition four, main cooling system and water jacket cooling system run alone heat transfer simultaneously, main cooling system and jacket-cooled
But system circulates simultaneously, and the fuel element or the fever of radioactive isotope target piece in pressure pipe are taken out of by Main Coolant, then
Secondary cooling water is passed to by main heat exchanger；The fever of irradiation devices or helium -3 screen (n, p) nuclear reaction outside pressure pipe is by water jacket
Coolant is taken out of, by water jacket heat exchanger transfer to secondary cooling water.
The present invention has the advantage that and the utility model has the advantages that
1, double cooling irradiation test systems proposed by the present invention are capable of providing multiple analog operating condition or environment, realize multiple function
Energy.The working condition requirement of four kinds of different situations can be achieved in the present invention: main cooling system is only used alone, or jacket-cooled is only used alone
But system or main cooling and water jacket cooling system operation heat transfer or main cooling system is static and water jacket cooling system alone simultaneously
Heat transfer.When main cooling system is used only, it is capable of providing the thermal-hydraulic condition and chemical environment of water of high temperature and pressure, can be simulated
The operating condition of PWR is able to carry out fuel element normal steady state irradiation test, the test of high temperature and pressure Flowing water corrosion etc..When using only water
When covering cooling system, it is capable of providing the thermal-hydraulic environment of low-temp low-pressure, is able to carry out material irradiation test, isotopic irradiation life
Produce etc..When the operation heat transfer alone simultaneously of main cooling system and water jacket cooling system, the operating condition of PWR can be simulated, is able to carry out
The power jumping of non-burst slug, power cycle, load follow test etc..When main cooling system is static or micrometeor flowing and with
When the water jacket type of cooling is conducted heat, PWC and BOCA operating condition can be simulated, be able to carry out the power jumping of burst slug, power cycle,
Load follow test, the production of high temperature and pressure hydrostatic corrosion test, isotopic irradiation etc..
2, when carrying out fuel degradation or the irradiation production of high-risk radioactive isotope, radioactive substance is possibly into cooling
In water.When the present invention is conducted heat when main cooling system is static with the water jacket type of cooling, since failed element is placed in irradiation
In the pressure pipe of high-temperature high pressure water, high-temperature high pressure water is static in pressure pipe or micrometeor flowing, major function are to provide high temperature height
Pressure ring border does not provide and takes away failed element nuclear heating function, and the fission product that failed element generates can enter main cooling system
In, and transported out with tiny flow quantity and carry out field assay and processing, therefore in in-pile irradiation facilities and entire main cooling system
Activity concentration will not accumulate raising, can control in a certain range, to the equipment screen contacted with radiating medium
Containing is covered to be easier to realize, it is smaller to the safety hazard of operations staff and environment.Simultaneously because pressure pipe fuel element or same position
The nuclear heating that plain target piece generates passes to high temperature and pressure hydrostatic, and high temperature and pressure hydrostatic passes through pressure tube wall again and passes to water jacket cooling
Water is circulated by water jacket and is taken out of, therefore the fission product that failed element or isotope target piece generate will not enter water jacket cooling
In water, water jacket cooling system will not be polluted.And high-temperature high pressure water is static or micrometeor one-way flow, does not circulate, therefore broken
The fission product that damage element or isotope target piece generate will not be again introduced into irradiation devices, will not generate to entire main cooling system
Cyclic polluting.The radioactive liquid and fission gas that failed element generates can be sealed in irradiation devices or small volume contains
In main cooling system, amount of waste is small, is able to carry out effectively shielding and protection, small to the radiation hazradial bundle of operations staff and environment.
3, the present invention establishes independent low-temp low-pressure water jacket cooling system, can be to failed element or high-risk isotope target piece
It is cooled down, and is isolated with the generation of the main coolant system of research reactor indirectly.Pressure pipe fuel element or isotope target piece produce
Raw nuclear heating first passes to high temperature and pressure hydrostatic, and high temperature and pressure hydrostatic passes through pressure tube wall again and passes to water jacket cooling system,
It is taken out of by water jacket cooling system.Pressure pipe is immersed in cooling jacket, is led between water jacket cooling system and research reactor Main Coolant
The generations such as overprotection pipe isolation, even if pressure pipe is damaged, the fission product that failed element or isotopic target generate only enters water
Cooling system is covered, pollution will not be generated to the main coolant system of research reactor, the security risk of research reactor be influenced small.Exist simultaneously
Settable insulating air gap or heat-insulating material outside pressure pipe obstruct heat in pressure pipe and transmit to outside pressure pipe, avoid the excessive temperature difference
Boiling is generated to jacket water, the heat release to sample in pressure pipe can also be facilitated to do more accurate measurement.Water jacket cooling system
System is isolated in irradiation devices by generations such as protection pipes between research reactor Main Coolant, and the cooling circuit pressure of water jacket should be lower than
The Main Coolant pressure of research reactor flows into protection using the Main Coolant of research reactor when the accidents such as protection tracheal rupture occur
Cooling entire irradiation devices, can effectively ensure that the safety of experimental rig in pipe.It entire pressure pipe and is placed on broken in pressure pipe
The heat that damage element or isotope target piece generate passes through the water jacket cooling system independently established and takes away, and cold by the master of research reactor
But agent system, which is taken away, compares, and the cooling flow of water jacket, temperature and pressure are all unrelated with the main coolant system of research reactor, Ke Yifang
It will pass through water jacket cooling system to be adjusted.
4, main cooling system is individually built, water jacket cooling system needs to be separately provided two Secondary cooling water systems, moisturizings
System, electrical system, I&C system etc. increase system setting and number of devices, increase space occupied, improve construction cost.
Main cooling system and water jacket cooling system are organically blended into a double cooling systems by the present invention, and main cooling system and water jacket are cooling
System is all provided final cold-trap by Secondary cooling water system, and provides deionized water by same water charging system, can be reduced altogether
With the equipment of system, whole system is simple, it is at low cost, take up little area, and improve the multi-functional of same system, greatly improve
Utilization rate of equipment and installations.
Detailed description of the invention
Attached drawing described herein is used to provide to further understand the embodiment of the present invention, constitutes one of the application
Point, do not constitute the restriction to the embodiment of the present invention.In the accompanying drawings:
Fig. 1 is parallel double cooling systems and serial second level cooling system.
Fig. 2 is double cooling irradiation test system process figures of the invention.
Specific embodiment
To make the objectives, technical solutions, and advantages of the present invention clearer, below with reference to embodiment and attached drawing, to this
Invention is described in further detail, and exemplary embodiment of the invention and its explanation for explaining only the invention, are not made
For limitation of the invention.
Embodiment 1
Double cooling irradiation test systems of the present embodiment 1, in conjunction with attached drawing 1 and attached drawing 2, the present invention will be described.
Double cooling irradiation test systems and the cooling irradiation test system difference of general serial second level, as shown in Figure 1.It is double cold
But irradiation test system is made of the water jacket cooling system of the main cooling system of high temperature and pressure and low-temp low-pressure, the two subsystems
System is all finally cooled down by secondary cooling system.According to different irradiation test/production requirements, double cooling irradiation test systems
The main cooling system and water jacket cooling system of system can isolated operation, realize different thermal-hydraulic environment and refrigerating function.Simultaneously
The main cooling segment and water jacket cooling segment of double cooling irradiation test systems can be run simultaneously parallel, realize it is cooling simultaneously alone or
The water jacket type of cooling.And the serial cooling irradiation test system of second level is arranged generally between main cooling system and secondary cooling system
One intermediate cooling loop, intermediate loop in normal conditions continuously pass the heat that main cooling circuit fuel element generates
Secondary coolant circuit is passed, the radioactive product of main cooling circuit enters secondary cooling system when preventing main heat exchanger from destroying, no
Energy isolated operation, cannot form the water jacket type of cooling.
The process flow chart of double cooling irradiation test systems, such as attached drawing 2.Double cooling irradiation test systems are by in-pile irradiation
The composition such as device and out-pile cooling system.In-pile irradiation facilities (can be fuel element, nuclear material or isotope by test specimen
Target piece etc.), pressure pipe, the composition such as protection pipe.Heap outer portion cools back system, water jacket cooling system, secondary cooling system by master
And the systems composition such as matched purification and water charging system.The capital equipment of main cooling system includes: 2 main circulation pumps, 1 master
Regenerative heat exchanger, 1 voltage-stablizer, 1 electric heater, pipeline, valve and instrument etc..The master of the purification part of main cooling system
Wanting equipment includes: 1 regenerative purification heat exchanger, 1 fore filter, 1 post-filter, 3 ion exchange columns, 1
Doser, 1 sampler analyzer, pipeline, valve and instrument etc..The capital equipment of water jacket cooling system includes: that 2 water jackets follow
Ring pump, 1 water jacket heat exchanger, 1 appearance mend device, pipeline, valve and instrument etc..The purification part of water jacket cooling system is mainly set
Standby includes: 1 fore filter, 1 post-filter, 2 ion exchange columns, pipeline, valve and instrument etc..Secondary cooling water
The capital equipment of system includes: 1 pond, 2 secondary cooling water pumps, pipeline, valve and instrument etc..Water charging system capital equipment
It include: 1 feed pump, 2 ion exchange columns, 1 filter, 1 water supply tank, 1 main cooling circuit small pump, 1 jacket-cooled
But circuit small pump, 1 electric heater, pipeline, valve and instrument etc..
Secondary cooling water system is main heat exchanger, the purification heat exchanger as ultimate heat sink to double cooling systems, and water jacket changes
The equipment such as hot device provide cooling water.Full water pond is store by the tap water that research reactor workshop provides, is driven by a secondary cooling water pump,
Another spare, through each heat exchanger after shunting, is pooled to secondary cooling supply mains later, secondary supply mains has radioactivity monitoring
Instrument is discharged after monitoring or is handled into floor drain.The flow control of secondary cooling water is bypassed by secondary cooling water pump
Pipe is equipped with electric control valve, and the flow of outflow is adjusted.In the outlet of each heat exchanger secondary side, one electric control valve is set,
To adjust the secondary cooling water flow into each heat exchanger.
Water charging system is to carry out water-filling, boosting and the water pressure test in double cooling systems starting；It is in operation double cooling
System provides the loss such as moisturizing, the leakage of compensation system coolant and sampling, keeps system coolant loading amount；In regulating water quality
To double cooling systems addition chemical reagent etc.；When loss of-coolant accident (LOCA) occurs for double cooling systems, as safety injection function, pass through benefit
Water tank is filled the water through small pump to system.Water charging system provides deionized water by research reactor workshop, is driven by feed pump, is handed over through ion
After changing column deoxygenation, purified treatment, the post-filter for trapping shredded resin is again passed through, flows into water supply tank.Main cooling system
Moisturizing by water supply tank Lai deionized water pressurizeed by high pressure small pump, after outlet non-return valve, heated up by electric heater, then flow to
The regenerator section entrance for purifying heat exchanger, by entering main cooling system after the heating of purification heat exchanger.The cooling system water supplement of water jacket is by mending
The deionized water that water tank comes is pressurizeed by low pressure small pump, after outlet non-return valve, is directly entered water jacket main cooling system.
Embodiment 2
Based on above-mentioned double cooling irradiation test systems, it can be achieved that following operating condition:
Operating condition one: main cooling system isolated operation
Main cooling system, which has, provides the thermal-hydraulic and chemical environment of water of simulation PWR operating condition to fuel element；Take combustion out of
Expect element heat release, the function of secondary cooling water is passed to by main regenerative heat exchanger, conveniently adjusted disengaging irradiation devices
Main Coolant temperature, pressure, flow and liquid level etc..Main cooling circuit is connected with the pressure pipe of irradiation devices inlet and outlet, is formed strong
Make the high temperature high pressure enclosed circuit of circulation.Main Coolant is driven by a main pump, and another spare, after main pump outlet check-valves
It is flow in irradiation devices end entrance on the pressure pipe for accommodating fuel element, fuel element surface, Zhi Houtong are flowed through in pressure pipe
Over-voltage solenoid upper end outlet flows out irradiation devices, secondary cooling water is transferred heat to through main heat exchanger, by secondary cooling water cooling
But the coolant after flows out main heat exchanger, is back to the entrance of main pump, completes a circulation.Under shutdown state, major loop system
System coolant can also serve as the decay heat that residual heat removal system takes the generation of irradiation devices fuel element out of.Main heat exchanger is regenerative
Tubulation casing type heat exchanger, regenerator section are pipe type structure, and cooling section is thimble tube structure, are suitable for high temperature and high pressure environment, energy
It is substantially reduced the thermal stress that the larger temperature difference generates.
The control of main cooling system pressure is controlled by voltage-stablizer, and surge exports between main pump inlet in main heat exchanger.
Main system can heat high-temperature high pressure water by electrical heating elements in voltage-stablizer, form air space, increase main system pressure, can also be from
Main pump outlet draws high-temperature high pressure water, and air space is sprayed at the top of voltage-stablizer, and condensed steam reduces main system pressure.Pressure stabilizing
It is provided with pilot operated safety valve on device, overpressure protection is carried out to main cooling system.Main cooling system liquid level is carried out by voltage-stablizer
Instruction, when liquid level drops to setting value, starting main cooling circuit small pump carries out moisturizing, reaches setting value closing.Main cooling
The flow control in circuit is that electric control valve is equipped with by main pump bypass pipe, the adjustable flow for flowing through irradiation devices.In master
One electric control valve is set on the by-pass line of heat exchanger, to adjust the coolant flow for entering main heat exchanger, another portion
After the coolant mixing of lease making main heat exchanger by-pass line and main heat exchanger outlet, by adjusting mixed proportion, thus certain
Change the heat exchange power of main heat exchanger in range.Main heat exchanger, which exports unmixed preceding coolant temperature, to enter master by adjusting
The secondary cooling water flow of heat exchanger is controlled.Main cooling system inlet temperature is adjusted can be by being arranged irradiation devices inlet tube
Electric heater on road carries out automatically tracking control.
The clean-up stage of main cooling system is for maintaining main coolant loop water quality, and the water quality for reaching irradiation test requirement refers to
Mark.By main pump outlet draw certain flow high-temperature high pressure water, by regenerative purify heat exchanger be cooled to 60 DEG C or less after from
Cooling section outflow filters the corrosion fragment etc. in major loop through fore filter, flows into hybrid ionic exchange again as needed
Column or anion-exchange column or cation exchange column again pass through the post-filter for trapping shredded resin, purified to change
After the regenerator section heating of hot device, and main pump inlet is flowed back to, completes a local circulation.Sampling analysis device is arranged in ion exchange column
Inlet and outlet can analyze the water quality of purification front and back main cooling water.
Operating condition two: water jacket cooling system isolated operation
Water jacket cooling system, which has, provides the thermal-hydraulic environment of low-temp low-pressure to nuclear material or target piece；Take irradiation dress out of
Set, the heat release of test material or target piece, by shell-and-tube water jacket heat exchanger transfer to the function of secondary cooling water, can aspect adjust
Pass in and out temperature, pressure and the flow of irradiation devices cooling water.Water jacket cooling circuit is connected with the protection pipe of irradiation devices inlet and outlet,
Form the closed water loop of forced circulation.Water jacket coolant is driven by water jacket circulating pump, after water jacket circulating-pump outlet check-valves
It is flow in irradiation devices end entrance in protection pipe, test material or target piece are flowed through in protection pipe, passes through protection pipe upper end later
Outlet outflow irradiation devices transfer heat to secondary cooling water through water jacket heat exchanger, by secondary cooling water cooling after cooling
Agent outflow water covers heat exchanger, is back to the entrance of water jacket circulating pump, completes a circulation.Water jacket heat exchanger is multipaths shell-and-tube
Heat exchange or plate heat exchanger are applicable in low-temp low-pressure environment.
The pressure of water jacket cooling system, which adjusts to hold by air-tank style, mends device, and surge is in water jacket heat exchanger exit and water jacket
Between pump entry, compensation gas can be compressed air, nitrogen or helium, hold mend device at the top of setting spring loaded safety valve into
Row overpressure protection.The cooling system entry temperature of water jacket, which is adjusted, to be carried out by the electric heater on setting irradiation devices inlet duct
Automatically track control.The inlet flow rate of water jacket cooling system can by be arranged in water jacket recycle pump bypass on flow control valve
Carry out flow-dividing control.The heat exchanger power regulation of water jacket cooling system, can be by the stream that is arranged on water jacket heat exchanger bypass pipe
Adjustable valve, the coolant flow that control enters in water jacket heat exchanger and the coolant flow bypassed outside heat exchanger, remix
The water cooling by heat exchanger of different proportion and heat exchange power, water jacket heat exchanger exit are controlled without the cooling water of heat exchanger
Coolant temperature before unmixed can be controlled by the secondary cooling water flow that adjusting enters water jacket heat exchanger.Water jacket is cooling
System liquid level is indicated by holding benefit device, and when liquid level drops to setting value, starting water jacket cooling circuit small pump is mended
Water reaches setting value closing.
The clean-up stage of water jacket cooling system is the water that certain flow is drawn by water jacket circulating-pump outlet, through fore filter,
Mixed-bed ion-exchange column or anion-exchange column are flowed into again as needed, again pass through the postposition mistake for trapping shredded resin
Filter, and jacket-cooled pump entry is flowed back to, complete a local circulation.
Operating condition three: main cooling system and the isolated operation simultaneously of water jacket cooling system
Main cooling system and water jacket cooling system are run alone simultaneously, are all circulated, are conducted heat alone simultaneously.In pressure pipe
Test specimen or the high-temperature high pressure water that is provided by main cooling system of fuel element fever directly cool down and take away, then by regenerative master
Heat exchanger transfer is to secondary cooling water.The fever of pressure pipe external irradiation device is direct by water jacket cooling circuit offer low-temp low-pressure water
Cooling -3 screen (n, p) nuclear reaction heat of helium and device gamma heat release etc. are taken out of, then by shell-and-tube water jacket heat exchanger transfer to secondary
Cooling water.Main cooling water circuit and water jacket cooling circuit are separated in irradiation devices by pressure pipe etc., can be outside pressure pipe
Heat is transmitted to outside pressure pipe in addition insulating air gap or heat-insulating material barrier pressure, and the excessive temperature difference is avoided to produce jacket water
Raw boiling, can also facilitate the heat release to sample in pressure pipe to do more accurate measurement.
Operating condition four: main cooling system is static or micrometeor flowing, the cooling system heat transfer of water jacket are run simultaneously
Main cooling system is static or micrometeor one-way flow, only fuel element is given to provide high temperature and pressure water environment, without
Fuel element nuclear heating is taken out of and passes to secondary cooling water function.Water jacket cooling system provides low-temp low-pressure cooling water, follows
Circulation is dynamic to take pressure pipe fuel element nuclear heating out of out-pile by the indirect type of cooling of water jacket, and to -3 screen of helium outside pressure pipe
(n, p) nuclear reaction heat and irradiation devices gamma heat release etc. take out-pile out of by direct cooling mode together, then pass through shell-and-tube water
Set heat exchanger passes to secondary cooling water.Test specimen or fuel element fever first pass on the inside of pressure pipe in irradiation devices
Static main cooling water, then outside cooling jacket is passed to by pressure tube wall by main cooling water, the irradiation devices outside pressure pipe
Fever is also taken out of by cooling jacket together, and by water jacket heat exchanger transfer to secondary cooling water.
When fuel element occurs damaged, main cooling system can be static, the radioactivity for as needed generating failed element
Fission product is enclosed in pressure pipe, and the nuclear heating that element generates can radially pass to water jacket cooling system by free convection
System, prevents radioactive water is uncontrollable to be discharged into main cooling system.Main cooling system can also micrometeor one-way flow, can to accommodate
The pressure pipe of failed element injects free of contamination deionized water, rinses, the radioactive product pollution in net acidifying and dilution pressure pipe,
The radioactive level at irradiation devices is reduced, personal dose is reduced.Micrometeor flowing avoids fission product diffusion and dirt repeatedly
Dyeing and finishing major loop keeps the water quality of experimental enviroment, convenient to be sampled, analyze and handle to fission product.Main cooling system
The radioactive substance that failed element irradiation generates is included in pressure pipe or in the small volume space of major loop, as first by system
Road safety curtain contains radioactive substance, it is ensured that test safety and research reactor safety.Water jacket cooling system will accommodate damaged member
The pressure pipe of part is isolated with research reactor main coolant system, provides the to the high specific activity fission product that failed element generates
The shielding of second level radiological safety, including water shielding and device shielding.
It is separated in irradiation devices by pressure pipe etc. between main cooling system and water jacket cooling system, even if pressure pipe
Breakage, the fission product that failed element/spoke method generates only enter water jacket cooling system, will not be to the main cooling of research reactor
Agent system generates pollution.Between water jacket cooling system and research reactor Main Coolant in irradiation devices by protection pipe etc. generate every
From the cooling circuit pressure of water jacket should be lower than the Main Coolant pressure of research reactor, available when the accidents such as protection tracheal rupture occur
The Main Coolant of research reactor flows into cooling entire irradiation devices in protection pipe, prevents fuel element from burning.
Above-described specific embodiment has carried out further the purpose of the present invention, technical scheme and beneficial effects
It is described in detail, it should be understood that being not intended to limit the present invention the foregoing is merely a specific embodiment of the invention
Protection scope, all within the spirits and principles of the present invention, any modification, equivalent substitution, improvement and etc. done should all include
Within protection scope of the present invention.
Claims (12)
1. a kind of double cooling irradiation test systems, which is characterized in that including irradiation devices, main cooling system, water jacket cooling system,
Secondary cooling system and water charging system；
The main cooling system circuit is connected with the pressure pipe of irradiation devices inlet and outlet, forms high temperature and pressure circuit；The water jacket
Cooling system circuit is connected with the protection pipe of irradiation devices inlet and outlet, forms low-temp low-pressure circuit；The main cooling system and institute
Water jacket cooling system is stated all finally to be cooled down by secondary cooling system；The water charging system is respectively the main cooling system
With the cooling system water supplement of the water jacket.
2. a kind of double cooling irradiation test systems according to claim 1, which is characterized in that the main cooling system includes
At least 1 main circulation pump, main heat exchanger, voltage-stablizer and main cooling and purifying section；The voltage-stablizer is for controlling main cooling system pressure
Power；Main Coolant is driven by main circulation pump, and the pressure pipe upper end for flowing to receiving fuel element in irradiation devices through main circulation pump enters
Mouthful, fuel element surface is flowed through in pressure pipe, and irradiation devices are flowed out by pressure pipe upper end outlet later, it will through main heat exchanger
Heat transfer flows out main heat exchanger to secondary cooling system, by the cooling water of secondary cooling system coolant after cooling, returns
To the entrance of main circulation pump, a circulation is completed；The water charging system is connected with the main cooling and purifying section, the water charging system
The deionized water of offer flows into main circulation pump entrance by main cooling and purifying section.
3. a kind of double cooling irradiation test systems according to claim 2, which is characterized in that the main cooling and purifying section packet
Include regenerative purification heat exchanger, fore filter, post-filter, at least 2 ion exchange columns, doser and sampling analysis
Device；The high-temperature high pressure water of certain flow is drawn in the main circulation pump outlet, purifies heat exchanger cooling from cooling section by regenerative
Outflow, through fore filter, then flows into ion exchange column, again passes through post-filter, the regeneration through regenerative purification heat exchanger
After Duan Shengwen, and main circulation pump entrance is flowed back to, completes a local circulation；It is flow to from the deionized water of water charging system outlet outflow
After regenerative purifies the regenerator section heating of heat exchanger, into the entrance of main circulation pump；The sampling analysis device is arranged in preposition mistake
Between the outlet of the entrance and post-filter of filter；The outlet of post-filter is arranged in the doser and regenerative purifies
On pipeline between heat exchanger, for adjusting the water quality of main cooling system.
4. a kind of double cooling irradiation test systems according to claim 2, which is characterized in that the main cooling system also wraps
Include electric heater；The Surge line piping of the voltage-stablizer is connected to the pipeline between the outlet of main heat exchanger and the entrance of main circulation pump
On, the spray tube of the voltage-stablizer is connected to main circulation pump outlet, is provided with pilot operated safety valve on the voltage-stablizer；The electricity
Heater is arranged on the pipeline between the main circulation pump outlet and the irradiation devices entrance, for entering to main cooling system
Mouth temperature automatically adjusts；Electric control valve is set on the by-pass line of main circulation pump, flows through irradiation for shunt regulating
The coolant flow of device；Electric control valve is set on the by-pass line of main heat exchanger, enters main heat exchanger for adjusting
Coolant flow；Main cooling system liquid level is indicated that it is cold to adjust master by main cooling circuit small pump by the voltage-stablizer
But system liquid level.
5. a kind of double cooling irradiation test systems according to claim 1, which is characterized in that the water jacket cooling system packet
At least 1 water jacket circulating pump, water jacket heat exchanger are included, holds and mends device and the cooling clean-up stage of water jacket；The appearance mends device for adjusting water jacket
The pressure of cooling system；Water jacket coolant is driven by water jacket circulating pump, is flow in irradiation devices and is protected after water jacket circulating-pump outlet
End entrance on pillar flows through test material or target piece surface in protection pipe, passes through the outflow irradiation of protection pipe upper end outlet later
Device transfers heat to secondary cooling system through water jacket heat exchanger, by the cooling after cooling of the cooling water of secondary cooling system
Agent outflow water covers heat exchanger, is back to the entrance of water jacket circulating pump, completes a circulation；The water charging system and the jacket-cooled
But clean-up stage is connected, and the deionized water that the water charging system provides flows into water jacket pump entry.
6. a kind of double cooling irradiation test systems according to claim 5, which is characterized in that the cooling clean-up stage of the water jacket
Including fore filter, post-filter and at least 2 ion exchange columns；The water jacket circulating-pump outlet draws certain flow
Water successively passes through fore filter, ion exchange column and post-filter, then flows back to the entrance of water jacket circulating pump, completes one
Local circulation.
7. a kind of double cooling irradiation test systems according to claim 5, which is characterized in that the water jacket cooling system is also
Including electric heater；The Surge line piping for holding benefit device is connected to the pipeline between water jacket heat exchanger exit and water jacket pump entry
On, the appearance mends and is provided with spring loaded safety valve on device；Electric heater setting the water jacket circulating-pump outlet with it is described
On pipeline between irradiation devices entrance, for automatically adjusting to the cooling system entry temperature of water jacket；In water jacket circulating pump
By-pass line on electric control valve is set, the coolant flow of irradiation devices is flowed through for shunt regulating；In water jacket heat exchanger
By-pass line on electric control valve is set, for adjust enter water jacket heat exchanger coolant flow；Water jacket cools down system liquid
Position is indicated by holding benefit device, is passed through water jacket cooling circuit small pump and is adjusted the cooling system liquid level of water jacket.
8. a kind of double cooling irradiation test systems according to claim 1, which is characterized in that the main cooling system and water
It is separated in irradiation devices by pressure pipe etc. between set cooling system；Settable insulating air gap or heat insulating material outside pressure pipe
Material, for preventing the heat transmitting between two systems；It is filled between the water jacket cooling system and research reactor main cooling system in irradiation
It is isolated in setting by protection pipe, and the cooling system pressure of water jacket is set smaller than research reactor main cooling system pressure.
9. according to a kind of described in any item double cooling irradiation test systems of claim 2-7, which is characterized in that the main heat exchange
Device and purification heat exchanger are regenerative tubulation casing type heat exchanger, and regenerator section is pipe type structure, and cooling section is thimble tube structure,
Thermal stress is reduced for high temperature and high pressure environment；The water jacket heat exchanger is multipaths shell-and-tube heat exchanger or plate heat exchanger, is used
In low-temp low-pressure environment.
10. a kind of double cooling irradiation test systems according to claim 1, which is characterized in that the secondary cooling system
Including pond and at least 1 secondary cooling water pump；Full tap water is store into pond, is driven by secondary cooling water pump, after shunting respectively
Main heat exchanger and water jacket heat exchanger are flowed through, is pooled to after secondary cooling supply mains is monitored later and is discharged or handle.
11. a kind of double cooling irradiation test systems according to claim 1, which is characterized in that the water charging system includes
Feed pump, at least 2 ion exchange columns, filter, water supply tank, main cooling circuit small pump, water jacket cooling circuit small pump and
Electric heater；Deionized water is driven by feed pump, after ion exchange column deoxygenation, purified treatment, is passed through filter, is flowed into and mend
Water tank；The deionized water that main cooling system moisturizing is come out by water supply tank is after the pressurization of main cooling circuit small pump, then by electric heating
Main circulation pump entrance is flowed into after flowing to the regenerator section heating of the regenerative purification heat exchanger after device heating；Water jacket cooling system is mended
The deionized water that water is come out by water supply tank is by flowing directly into water jacket pump entry after the pressurization of water jacket cooling circuit small pump.
12. a kind of double cooling irradiation testing methods, using the described in any item double cooling irradiation test systems of such as claim 1-11
System, which is characterized in that the test method at least runs following any operating conditions:
Operating condition one is capable of providing the thermal-hydraulic and chemical environment of water of high temperature and pressure, pressure pipe when main cooling system is used alone
The fever of interior test specimen or fuel element is taken out of by Main Coolant, then passes to secondary cooling water by main heat exchanger；
Operating condition two is capable of providing the thermal-hydraulic environment of low-temp low-pressure, the spoke in protection pipe when water jacket cooling system is used alone
Fever according to device materials or radioactive isotope target piece is taken out of by water jacket coolant, by water jacket heat exchanger transfer to secondary cold
But water；
Operating condition three, main cooling system is static or micrometeor flowing and when the cooling system circulation flowing heat transfer of water jacket, test specimen or
Fuel element fever first passes to the static Main Coolant on the inside of pressure pipe, then is passed to outside by Main Coolant by pressure tube wall
The water jacket coolant of side, the fever of irradiation devices or helium -3 screen (n, p) nuclear reaction outside pressure pipe also by water jacket coolant together
It takes out of, and by water jacket heat exchanger transfer to secondary cooling water；
When operating condition four, main cooling system and water jacket cooling system run alone heat transfer simultaneously, main cooling system and water jacket cooling system
It unites while circulating, the fuel element or the fever of radioactive isotope target piece in pressure pipe are taken out of by Main Coolant, then by leading
Heat exchanger transfer is to secondary cooling water；The fever of irradiation devices or helium -3 screen (n, p) nuclear reaction outside pressure pipe is cooled down by water jacket
Agent is taken out of, by water jacket heat exchanger transfer to secondary cooling water.
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| CN109991157A (en) * | 2019-04-08 | 2019-07-09 | 中国核动力研究设计院 | A kind of high-temperature high pressure water corrosion product dissolution release device |
| CN110057746A (en) * | 2019-04-28 | 2019-07-26 | 东华理工大学 | A kind of online high temperature and pressure radiation corrosion simulation system and analogy method |
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| CN110491530A (en) * | 2019-08-30 | 2019-11-22 | 西南石油大学 | A kind of -3 power transience pilot system of helium and method |
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| CN111540492A (en) * | 2020-05-15 | 2020-08-14 | 中国核动力研究设计院 | Comprehensive flowing water corrosion test device and method for one-loop and two-loop linkage operation |
| CN113783361A (en) * | 2020-06-09 | 2021-12-10 | 北京金风科创风电设备有限公司 | Cooling system |
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| CN109859869A (en) * | 2019-03-11 | 2019-06-07 | 中国核动力研究设计院 | A kind of irradiation devices suitable for single fuel element transient test |
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| CN110057746A (en) * | 2019-04-28 | 2019-07-26 | 东华理工大学 | A kind of online high temperature and pressure radiation corrosion simulation system and analogy method |
| CN110349687A (en) * | 2019-07-08 | 2019-10-18 | 上海交通大学 | A kind of flow-field visualized measurement experiment device based on compensation of refractive index |
| CN110491530A (en) * | 2019-08-30 | 2019-11-22 | 西南石油大学 | A kind of -3 power transience pilot system of helium and method |
| CN110828007A (en) * | 2019-11-18 | 2020-02-21 | 中国核动力研究设计院 | Special voltage stabilizer and pressure control system for reactor irradiation examination loop |
| CN110828007B (en) * | 2019-11-18 | 2021-06-29 | 中国核动力研究设计院 | Special voltage stabilizer and pressure control system for reactor irradiation examination loop |
| CN111540492A (en) * | 2020-05-15 | 2020-08-14 | 中国核动力研究设计院 | Comprehensive flowing water corrosion test device and method for one-loop and two-loop linkage operation |
| CN113783361A (en) * | 2020-06-09 | 2021-12-10 | 北京金风科创风电设备有限公司 | Cooling system |
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