CN106024079A - Passive residual heat removal circulation performance test system and test method - Google Patents
Passive residual heat removal circulation performance test system and test method Download PDFInfo
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- CN106024079A CN106024079A CN201610624091.5A CN201610624091A CN106024079A CN 106024079 A CN106024079 A CN 106024079A CN 201610624091 A CN201610624091 A CN 201610624091A CN 106024079 A CN106024079 A CN 106024079A
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- G—PHYSICS
- G21—NUCLEAR PHYSICS; NUCLEAR ENGINEERING
- G21C—NUCLEAR REACTORS
- G21C17/00—Monitoring; Testing ; Maintaining
- G21C17/02—Devices or arrangements for monitoring coolant or moderator
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E30/00—Energy generation of nuclear origin
- Y02E30/30—Nuclear fission reactors
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Abstract
The invention mainly relates to a passive residual heat removal cycle performance test system. The system comprises a waste heat discharge circulation simulation system and a supersaturated pressure system, wherein the waste heat discharge circulation simulation system comprises an in-pile heat source simulation module and an out-pile heat dissipation module, the in-pile heat source simulation module and the out-pile heat dissipation module are communicated through a pipeline to form a circulation test loop, and the supersaturated pressure system enables the pressure in the test system to exceed the saturated vapor pressure of a circulating liquid at a test temperature. The in-reactor heat source simulation module is used for simulating a heat source in an actual nuclear reactor, the performance of a waste heat discharge circulation simulation system can be obtained by monitoring the volume flow of circulating liquid in a circulation test loop, the inlet end temperature and the outlet end temperature of the in-reactor heat source simulation module and the inlet end temperature and the outlet end temperature of an out-of-reactor heat dissipation module, and the performance of a waste heat discharge circulation system configured in the actual nuclear reactor in an accident can be verified through the performance test result.
Description
Technical field
The invention belongs to nuclear reactor technology field, be specifically related to a kind of passive residual heat removal cyclicity
System and method of testing can be tested.
Background technology
Nuclear energy is a kind of cleaning, the economic energy, the safest, once has an accident, will
It is catastrophic.In order to improve reactor inherent safety, reactor core meltdown probability during reduction accident, the 3rd
Introducing a kind of passive residual heat removal blood circulation for nuclear energy application, this system is in the feelings without external power source
Under condition, the heat in heap is discharged, to ensure reactor safety by the Natural Circulation set up in loop.
Passive residual heat removal blood circulation performance is by heap endogenous pyrogen and the out-pile low-temperature receiver temperature difference, heap external heat exchanger
The factor impacts such as heat radiation power, system pipeline resistance, heap endogenous pyrogen center and out-pile low-temperature receiver center potential difference.
Passive residual heat removal cycle performance research at present only numerical simulation, theory analysis, do not test system
Its performance is carried out test checking.
Summary of the invention
In order to solve above-mentioned technical problem, the present invention provides a kind of passive residual heat removal cycle performance test
System and method of testing, this test system is passive residual heat row when simulation test nuclear reactor accident
Go out the performance of blood circulation.
In order to realize the purpose of the present invention, present invention employs techniques below scheme:
A kind of passive residual heat removal cycle performance test system, including Residual heat removal circulating analog system,
Supersaturation pressure system, wherein said Residual heat removal circulating analog system include heap endogenous pyrogen analog module,
Out-pile radiating module, described heap endogenous pyrogen analog module, out-pile radiating module are by pipeline connection and constitute
Loop test loop, described supersaturation pressure system makes pressure in this test system exceed circulating liquid to exist
Saturated vapor pressure at a temperature of test.
Further technical scheme, described heap endogenous pyrogen analog module includes pressure vessel and stores up pressure
Pot liquid carries out the electric heater heated, and described out-pile radiating module includes heat exchanger；Described pressure stores up
The tank port of export connects with described heat exchanger entrance point, described heat exchanger exit end and described pressure vessel import
End connection constitutes described loop test loop；Described supersaturation pressure system includes vacuum tank, described voltage stabilizing
Tank connects with described pressure vessel entrance point.
Further technical scheme, described loop test loop by the left pipeline being sequentially connected with, upper pipeline,
Right pipeline, lower pipeline are constituted, and wherein said left pipeline, right pipeline are arranged in a vertical direction, described upper pipe
Road, lower pipeline are arranged in the horizontal direction；Described pressure vessel is connected in left pipeline, and described heat exchanger is even
Being connected in right pipeline, described pressure vessel setting height(from bottom) is less than described heat exchanger, described pressure vessel interior-heat
Difference in height between center, source, heat exchanger heat radiation center is according to reactor endogenous pyrogen center and reaction in reality
Difference in height between out-pile heat radiation center determines.
Further technical scheme, described heat exchanger is that pipe heat exchanger, plate heat interchanger, plate-fin change
One in hot device, fin-tube type heat exchanger, described heat exchanger is by cold water heat exchange or passes through air heat-exchange.
Further technical scheme, described left pipeline is provided with for measuring pressure vessel entrance point pressure
First load cell, for measuring the first temperature element of pressure vessel entrance point temperature, for measuring pressure
Second load cell of power outlet end pressure, for measuring the second survey of pressure vessel discharge-end temperature
Temperature element；Described right pipeline is provided with for measuring the 3rd load cell of heat exchanger entrance point pressure, use
In measuring the 3rd temperature element of heat exchanger entrance point temperature, for measuring the of heat exchanger exit end pressure
Four load cells, for measuring the 4th temperature element of heat exchanger exit end temperature；Set on described upper pipeline
The first resistance valves, the entrance point of described first resistance valves is had to be provided with the 5th load cell, described first resistance
The port of export of valve is provided with the 6th load cell；Described lower pipeline is provided with the second resistance valves, flow valve, institute
The entrance point stating the second resistance valves is provided with the 7th load cell, and the port of export of described second resistance valves is provided with
Eight load cells；Described left pipeline high level is provided with first row air valve, the first relief valve.
Further technical scheme, is communicated with between described vacuum tank and described pressure vessel entrance point
Valve, described vacuum tank entrance point is provided with replenishing valve, and described vacuum tank top is provided with pressurizing valve, second exhaust
Valve, the second relief valve, described vacuum tank side is provided with the liquidometer of liquid level in measuring vacuum tank.
The method of testing of a kind of described passive residual heat removal cycle performance test system, including following step
Rapid:
Prepare before S1, test: open described first row air valve, communicating valve, the first resistance valves, the second resistance
Power valve, second row air valve, filled to Residual heat removal circulating analog system, pressure vessel by replenishing valve
Water, until water overflows at first row air valve, second row air valve, opens electric heater in pressure vessel
Water be slowly heated, make water set up circulation in loop test loop；The monitoring pressure vessel port of export simultaneously
Temperature, by regulation electric heater heating power control pressure vessel discharge-end temperature be less than
85 DEG C, until there is no gas evolution in Residual heat removal circulating analog system, in the process, continue
By replenishing valve to Residual heat removal circulating analog system water supplement；Be then switched off first row air valve, communicating valve,
Electric heater, opens replenishing valve, make the water in vacuum tank from replenishing valve discharge part, turn off replenishing valve,
Second row air valve, opens pressurizing valve, communicating valve, is forced into test system by described pressurizing valve and exceedes
Water saturated vapor pressure at test temperature；
S2, test are carried out: open the feedwater heating of described electric heater and make Residual heat removal circulating analog system
Setting up circulation, in making pressure vessel by the heating power of the described electric heater of regulation, water temperature is raised slowly to
The test temperature set, needs the numerical value change of each point for measuring temperature in monitoring and test system, pressure tap during this
Changing, the numerical value of described point for measuring temperature is respectively by described first temperature element, the second temperature element, the 3rd thermometric
Element, the 4th temperature element record, the numerical value of described pressure tap respectively by described first load cell,
Two load cells, the 3rd load cell, the 4th load cell, the 5th load cell, the 6th load cell,
7th load cell, the 8th load cell record；After in pressure vessel, water temperature reaches to test temperature, survey
Test system is stablized more than 10 minutes, each point for measuring temperature described in constant duration record, pressure tap numerical value with
And the volume flow numerical value of correspondence circulating liquid；
S3, test terminate: close electric heater, the first resistance valves, the second resistance valves standard-sized sheet, keep surveying
In test system, loop test loop is unimpeded, and in treating pressure vessel, water temperature drops to less than 80 DEG C, opens second row
Air valve general's test system decompression is to normal pressure, then opens first row air valve, by replenishing valve in test system
Water emptying, off-test.
Further technical scheme, the test data under the most multiple operating modes are then in described S2 step
On the basis of by regulating the first resistance valves, the aperture of the second resistance valves, change loop test loop resistance,
System to be tested is stablized more than 10 minutes again, constant duration record under this operating mode each point for measuring temperature,
The numerical value of pressure tap and the volume flow numerical value of corresponding circulating liquid.
The beneficial effects of the present invention is:
(1) heap endogenous pyrogen analog module of the present invention is for simulating the thermal source in actual nuclear reactor,
Described heap endogenous pyrogen analog module and described out-pile radiating module collectively form passive residual heat removal circulation
Test system, is simulated by the volume flow of circulating liquid in monitoring loop test loop, heap endogenous pyrogen
Module import and export end temperature, out-pile radiating module import and export end temperature, it is hereby achieved that waste heat row
Go out the performance of circulating analog system, such as: the heat exchange property of described out-pile radiating module, Residual heat removal follows
The Natural Circulation driving force P of ring analog systems and P Residual heat removal circulation under this Natural Circulation driving force
The circulation resistance Δ P that analog systems can overcome.Described supersaturation pressure system is possible to prevent described circulation
Liquid undergoes phase transition (gasification), it is ensured that the accuracy of test result, reliability.Described test temperature is i.e.
For heap endogenous pyrogen temperature.I.e. nuclear reactor in reality can be configured by above-mentioned the performance test results
The Residual heat removal blood circulation performance when accident makes checking.
(2) circulating liquid in described pressure vessel is heated with mould by the present invention by electric heater
Intend the thermal source in actual nuclear reactor, after the heating of described circulating liquid, carry out heat exchange cooling through described heat exchanger
And be back in described pressure vessel.By described vacuum tank is pressurizeed so that in whole test system
Pressure exceed circulating liquid (water) saturated vapor pressure at test temperature, the mode of vacuum tank pressurization
May is that the gases at high pressure injecting good stability in vacuum tank, such as nitrogen, air etc..The present invention
Test system can be not more than 25MPa at pressure, and circulating liquid temperature is not higher than under 350 DEG C of operating modes stable
Work.
(3) set-up mode in loop test loop of the present invention is beneficial to circulating liquid in described circulation survey
Examination sets up circulation in loop, and test process is smoothed out.Heretofore described circulating liquid is added
After heat, density reduction the port of export above pressure vessel move in described heat exchanger, then are changed by described
Hot device heat exchange cooling Posterior circle is back in described pressure vessel, and the flowing of described circulating liquid is without additional
Driving force.
(4) present invention obtains described pressure vessel, the entrance point of heat exchanger, the port of export to measure
Pressure, described pressure vessel, the entrance point of heat exchanger, the temperature of the port of export, the body of described circulating liquid
Long-pending flow, relative set load cell, temperature element and effusion meter；By described first resistance valves,
Second resistance valves may be used for changing the resistance in whole loop test loop, in order to obtains different operating mode
Under test data.
(5) vacuum tank of the present invention can also provide circulation for described Residual heat removal circulating analog system
Liquid, described circulating liquid is entered vacuum tank by described replenishing valve, then is entered by described communicating valve described remaining
Hot type goes out circulating analog system.Described first row air valve, second row air valve can be vacuum tank, waste heat rows
Discharge when being full of circulating liquid in going out circulating analog system and test intrasystem gas, and terminate in test
Time be that test system carries out pressure release.Described first relief valve, the second relief valve are in steady testing system
Pressure, it is ensured that test process safety.
(6) method of testing of the present invention is simple, easily operated, passive to be applied in nuclear reactor
Residual heat removal blood circulation performance is simulated test checking, for passive residual heat removal described in reality
The design of blood circulation is made that guidance, and Practical significance is big.
Accompanying drawing explanation
Fig. 1 is principle of the invention schematic diagram.
In figure, the implication of labelling is as follows:
1-vacuum tank 2-liquidometer 3-pressurizing valve 4-second row air valve 5-the second relief valve
6-replenishing valve 7-communicating valve 8-the first temperature element 9-pressure vessel
10-the second temperature element 11-the first load cell 12-electric heater
13-the second load cell 14-first row air valve 15-the first relief valve
16-the 5th load cell 17-the first resistance valves 18-the 6th load cell
19-the 3rd load cell 20-heat exchanger 21-the 4th load cell 22-the 3rd temperature element
23-the 4th temperature element 24-flow valve 25-the second resistance valves 26-the 7th load cell
27-the 8th load cell
Detailed description of the invention
Below in conjunction with embodiment, accompanying drawing technical solution of the present invention made more specific detail:
Embodiment 1
As it is shown in figure 1, passive residual heat removal cycle performance test system includes Residual heat removal circulating analog
System, supersaturation pressure system, wherein said Residual heat removal circulating analog system includes that heap endogenous pyrogen is simulated
Module, out-pile radiating module, described heap endogenous pyrogen analog module, out-pile radiating module pass through pipeline connection
And constituting loop test loop, in described supersaturation pressure system makes this test system, pressure exceedes circulation
Liquid saturated vapor pressure at test temperature.Heap endogenous pyrogen analog module of the present invention is used for simulating reality
Thermal source in the nuclear reactor of border, described heap endogenous pyrogen analog module collectively forms with described out-pile radiating module
Passive residual heat removal loop test system, by the volume of the circulating liquid in monitoring loop test loop
Flow, heap endogenous pyrogen analog module import and export end temperature, out-pile radiating module import and export end temperature,
It is hereby achieved that the performance of Residual heat removal circulating analog system, such as: changing of described out-pile radiating module
Hot property, the Natural Circulation driving force P of Residual heat removal circulating analog system and driving in this Natural Circulation
The circulation resistance Δ P that under power, P Residual heat removal circulating analog system can overcome.Described supersaturation pressure system
System is possible to prevent described circulating liquid to undergo phase transition (gasification), it is ensured that the accuracy of test result, reliably
Property.The Residual heat removal that i.e. can be configured nuclear reactor in reality by above-mentioned the performance test results is circulated
The system performance when accident makes checking.
Described heap endogenous pyrogen analog module includes pressure vessel 9 and adds liquid in pressure vessel 9
The electric heater 12 of heat, described out-pile radiating module includes heat exchanger 20；Described pressure vessel 9 exports
End connects with described heat exchanger 20 entrance point, described heat exchanger 20 port of export enters with described pressure vessel 9
Mouth end connection constitutes described loop test loop；Described supersaturation pressure system includes vacuum tank 1, described
Vacuum tank 1 connects with described pressure vessel 9 entrance point.The present invention passes through electric heater 12 to described pressure
Circulating liquid in power storage tank 9 carries out heating to simulate the thermal source in actual nuclear reactor, described circulation fluid
Carry out heat exchange cooling through described heat exchanger 20 after body heating and be back in described pressure vessel 9.Pass through
Described vacuum tank 1 is pressurizeed so that the intrasystem pressure of whole test exceedes circulating liquid (water) exists
Saturated vapor pressure at a temperature of test, the mode of vacuum tank 1 pressurization may is that to be injected in vacuum tank 1
The gases at high pressure of good stability, such as nitrogen, air etc..The present invention system of testing can be little at pressure
In 25MPa, circulating liquid temperature is not higher than steady operation under 350 DEG C of operating modes.
Described loop test loop is made up of the left pipeline being sequentially connected with, upper pipeline, right pipeline, lower pipeline,
Wherein said left pipeline, right pipeline are arranged in a vertical direction, and described upper pipeline, lower pipeline are in the horizontal direction
Arrange；Described pressure vessel 9 is connected in left pipeline, and described heat exchanger 20 is connected in right pipeline,
Described pressure vessel 9 setting height(from bottom) be less than described heat exchanger 20, described pressure vessel 9 endogenous pyrogen center,
Difference in height between heat exchanger 20 heat radiation center is according to reactor endogenous pyrogen center and out-of-pile in reality
Difference in height between heat radiation center determines.The set-up mode in loop test loop of the present invention is beneficial to circulation
Liquid sets up circulation in described loop test loop, and test process is smoothed out.In the present invention
The heated rear density reduction of described circulating liquid the port of export above pressure vessel 9 change described in moving to
In hot device 20, then it is back in described pressure vessel 9 by described heat exchanger 20 heat exchange cooling Posterior circle,
The flowing of described circulating liquid is without additional driving force.
Described heat exchanger 20 is pipe heat exchanger, plate heat interchanger, plate-fin heat exchanger, fin-tube type change
One in hot device, described heat exchanger 20 by cold water heat exchange or passes through air heat-exchange.
Described left pipeline be provided with the first load cell 11 for measuring pressure vessel 9 entrance point pressure,
For measuring the first temperature element 8 of pressure vessel 9 entrance point temperature, going out for measuring pressure vessel 9
Second load cell 13 of mouthful end pressure, for measuring the second thermometric unit of pressure vessel 9 discharge-end temperature
Part 10；Described right pipeline be provided with the 3rd load cell 19 for measuring heat exchanger 20 entrance point pressure,
For measuring the 3rd temperature element 22 of heat exchanger 20 entrance point temperature, exporting for measuring heat exchanger 20
4th load cell 21 of end pressure, for measuring the 4th temperature element of heat exchanger 20 discharge-end temperature
23；Described upper pipeline is provided with the first resistance valves 17, and the entrance point of described first resistance valves 17 is provided with
Five load cells 16, the port of export of described first resistance valves 17 is provided with the 6th load cell 18；Under described
Pipeline is provided with the second resistance valves 25, flow valve 24, and the entrance point of described second resistance valves 25 is provided with
Seven load cells 26, the port of export of described second resistance valves 25 is provided with the 8th load cell 27；A described left side
Pipeline high level is provided with first row air valve the 14, first relief valve 15.The present invention in order to measure obtain described
Pressure vessel 9, the entrance point of heat exchanger 20, the pressure of the port of export, described pressure vessel 9, heat exchanger
The entrance point of 20, the temperature of the port of export, the volume flow of described circulating liquid, relative set pressure measurement unit
Part, temperature element and effusion meter 24；Permissible by described first resistance valves the 17, second resistance valves 25
For changing the resistance in whole loop test loop, in order to obtain the test data under different operating mode.
Valve 7, described vacuum tank it is communicated with between described vacuum tank 1 and described pressure vessel 9 entrance point
1 entrance point is provided with replenishing valve 6, described vacuum tank 1 top be provided with pressurizing valve 3, second row air valve 4,
Two relief valve 5, described vacuum tank 1 side is provided with the liquidometer of liquid level in measuring vacuum tank 1
2.Vacuum tank 1 of the present invention can also provide circulating liquid for described Residual heat removal circulating analog system,
Described circulating liquid is entered vacuum tank 1 by described replenishing valve 6, then is entered described remaining by described communicating valve 7
Hot type goes out circulating analog system.Described first row air valve 14, second row air valve 4 can vacuum tank 1,
Discharge when being full of circulating liquid in Residual heat removal circulating analog system and test intrasystem gas, and surveying
Pressure release is carried out for test system at the end of examination.Described first relief valve the 15, second relief valve 5 is for stable
Test intrasystem pressure, it is ensured that test process safety.
Embodiment 2
The method of testing of described passive residual heat removal cycle performance test system, comprises the following steps:
S1, test before prepare: open described first row air valve 14, communicating valve the 7, first resistance valves 17,
Second resistance valves 25, second row air valve 4, give Residual heat removal circulating analog system, pressure by replenishing valve 6
Power storage tank 1 carries out water-filling, until water overflows at first row air valve 14, second row air valve 4, opens electricity
Heater 12 is slowly heated to the water in pressure vessel 9, makes water set up circulation in loop test loop；
Monitor the temperature of pressure vessel 9 port of export simultaneously, controlled by the heating power of regulation electric heater 12
Pressure vessel 9 discharge-end temperature is less than 85 DEG C, until not having gas in Residual heat removal circulating analog system
Till precipitation, in the process, replenishing valve 6 is continued through to Residual heat removal circulating analog system water supplement；
It is then switched off first row air valve 14, communicating valve 7, electric heater 12, opens replenishing valve 6, make vacuum tank
Water in 1 discharges part from replenishing valve 6, turns off replenishing valve 6, second row air valve 4, opens pressurizing valve
3, communicating valve 7, are forced into test system by described pressurizing valve 3 and exceed water at test temperature full
And vapour pressure；
S2, test are carried out: open the heating of feeding water of described electric heater 12 and make Residual heat removal circulating analog
System sets up circulation, makes water temperature in pressure vessel 9 by regulating the heating power of described electric heater 12
It is raised slowly to the test temperature set, during this, needs each point for measuring temperature, pressure measurement in monitoring and test system
The change in value of point, the numerical value of described point for measuring temperature is respectively by described first temperature element the 8, second thermometric unit
Part the 10, the 3rd temperature element the 22, the 4th temperature element 23 records, the numerical value of described pressure tap respectively by
Described first load cell the 11, second load cell the 13, the 3rd load cell the 19, the 4th load cell
21, the 5th load cell the 16, the 6th load cell the 18, the 7th load cell the 26, the 8th load cell
27 record；After in pressure vessel 9, water temperature reaches to test temperature, test system stability more than 10 minutes,
Each point for measuring temperature, the numerical value of pressure tap and the volume flow of corresponding circulating liquid described in constant duration record
Numerical value；
S3, test terminate: closedown electric heater 12, first resistance valves the 17, second resistance valves 25 standard-sized sheet,
Keeping loop test loop in test system unimpeded, in treating pressure vessel 9, water temperature drops to less than 80 DEG C, beats
Open second row air valve 4 by test system decompression to normal pressure, then open first row air valve 14, pass through replenishing valve
Water emptying in 6 test systems, off-test.
Test data under the most multiple operating modes then on the basis of described S2 step by regulation first
The aperture of resistance valves the 17, second resistance valves 25, changes the resistance in loop test loop, system to be tested
Again stablizing more than 10 minutes, constant duration record is the number of each point for measuring temperature, pressure tap under this operating mode
Value and the volume flow numerical value of corresponding circulating liquid.
The heat exchange property of described out-pile radiating module can utilize following result of calculation to be evaluated, and specifically counts
Calculation process:
Q=CpcVρc(tci-tco)/3600
Q: total thermal discharge, unit: KW
Cpc: circulating liquid specific heat in test system, unit: KJ/kgK
V: the volume flow of circulating liquid in loop test loop, unit: m3/h
Ρc: out-pile radiating module center liquid density, unit: kg/m3
Tci: heat exchanger entrance point temperature, unit: K
Tco: heat exchanger exit end temperature, unit: K
Described V, T is obtained by test systemci、TcoTest number, substitute into above-mentioned computing formula
To obtain the heat exchange property of described heat exchanger, it is also possible to for the exothermicity of evaluation test system.
The cycle performance evaluation of described test system: obtain heap endogenous pyrogen analog module endogenous pyrogen by measurement
Center liquid density, out-pile radiating module heat radiation center liquid density and described source center with heat radiation in
Heart difference in height △ H, obtains Natural Circulation driving force P, and under this Natural Circulation driving force under P effect,
Circulation resistance △ P that Residual heat removal circulating analog system can overcome and the flow V of generation.
Described heap endogenous pyrogen analog module endogenous pyrogen center liquid density obtains:
Measure heap endogenous pyrogen analog module entrance end temperature thi、tho, try to achieve mean temperature thm, pass through
Mean temperature thmObtain the density p of correspondenceh。
thi: heap endogenous pyrogen analog module entrance point temperature, unit: K
tho: heap endogenous pyrogen analog module discharge-end temperature, unit: K
thm: heap endogenous pyrogen analog module endogenous pyrogen mean temperature, unit: K
ρh: heap endogenous pyrogen analog module endogenous pyrogen center liquid density, unit: kg/m3
Described out-pile radiating module heat radiation center liquid density obtains:
Measure out-pile radiating module entrance end temperature tci、tco, try to achieve mean temperature tcm, by averagely
Temperature tcmObtain the density p of correspondencec。
tci: out-pile radiating module entrance point temperature, unit: K
tco: out-pile radiating module outlet temperature, unit: K
tcm: out-pile radiating module mean temperature, unit: K
ρc: out-pile radiating module center liquid density, unit: kg/m3
Natural Circulation driving force P:
P=(ρc-ρh)g△H
P: Natural Circulation driving force, unit: KPa
Described circulation resistance △ P=△ Ph+△Pc+△Pf1+△Pf2
Wherein:
The resistance produced when Δ P: circulating liquid flows in Residual heat removal circulating analog system, unit:
KPa
ΔPh: the resistance that circulating liquid produces when flowing through heap endogenous pyrogen analog module, unit: KPa
ΔP c: the resistance that circulating liquid produces when flowing through out-pile radiating module, unit: KPa
ΔPf1: circulating liquid flows through resistance during the first resistance valves, unit: KPa
ΔPf2: circulating liquid flows through resistance during the second resistance valves, unit: KPa
It is calculated described Δ P by the pressure reduction between heap endogenous pyrogen analog module entrance point, the port of exporth；
It is calculated described Δ P by the pressure reduction between out-pile radiating module entrance point, the port of exportc；By first
Pressure reduction between resistance valves entrance point, the port of export is calculated described Δ Pf1；By described second resistance valves
Pressure reduction between entrance point, the port of export is calculated described Δ Pf2。
Claims (8)
1. a passive residual heat removal cycle performance test system, it is characterised in that: include that waste heat is arranged
Going out circulating analog system, supersaturation pressure system, wherein said Residual heat removal circulating analog system includes heap
Endogenous pyrogen analog module, out-pile radiating module, described heap endogenous pyrogen analog module, out-pile radiating module are logical
Crossing pipeline connection and constitute loop test loop, described supersaturation pressure system makes this test system intrinsic pressure
Power exceedes circulating liquid saturated vapor pressure at test temperature.
2. passive residual heat removal cycle performance test system as claimed in claim 1, its feature exists
In: described heap endogenous pyrogen analog module include pressure vessel (9) and to pressure vessel (9) in liquid
Carrying out the electric heater (12) heated, described out-pile radiating module includes heat exchanger (20)；Described pressure
Power storage tank (9) port of export connects with described heat exchanger (20) entrance point, described heat exchanger (20) goes out
Mouth end connects the described loop test loop of composition with described pressure vessel (9) entrance point；Described supersaturation
Pressure system includes vacuum tank (1), described vacuum tank (1) and described pressure vessel (9) entrance point
Connection.
3. passive residual heat removal cycle performance test system as claimed in claim 2, its feature exists
In: described loop test loop is made up of the left pipeline being sequentially connected with, upper pipeline, right pipeline, lower pipeline,
Wherein said left pipeline, right pipeline are arranged in a vertical direction, and described upper pipeline, lower pipeline are in the horizontal direction
Arrange；Described pressure vessel (9) is connected in left pipeline, and described heat exchanger (20) is connected to right pipe
Lu Zhong, described pressure vessel (9) setting height(from bottom) is less than described heat exchanger (20), described pressure vessel
(9) difference in height between endogenous pyrogen center, heat exchanger (20) heat radiation center is according to reactor in reality
Difference in height between endogenous pyrogen center and out-of-pile heat radiation center determines.
4. passive residual heat removal cycle performance test system as claimed in claim 2, its feature exists
In: described heat exchanger (20) is pipe heat exchanger, plate heat interchanger, plate-fin heat exchanger, fin-tube type
One in heat exchanger, described heat exchanger (20) is by cold water heat exchange or passes through air heat-exchange.
5. passive residual heat removal cycle performance test system as claimed in claim 3, its feature exists
In: described left pipeline is provided with the first load cell for measuring pressure vessel (9) entrance point pressure
(11), it is used for measuring first temperature element (8) of pressure vessel (9) entrance point temperature, being used for surveying
Measure second load cell (13) of pressure vessel (9) outlet pressures, be used for measuring pressure vessel (9)
Second temperature element (10) of discharge-end temperature；Described right pipeline is provided with for measuring heat exchanger (20)
3rd load cell (19) of entrance point pressure, it is used for measuring the of heat exchanger (20) entrance point temperature
Three temperature elements (22), be used for measuring heat exchanger (20) outlet pressures the 4th load cell (21),
For measuring the 4th temperature element (23) of heat exchanger (20) discharge-end temperature；Set on described upper pipeline
The first resistance valves (17), the entrance point of described first resistance valves (17) is had to be provided with the 5th load cell (16),
The port of export of described first resistance valves (17) is provided with the 6th load cell (18)；Set on described lower pipeline
The second resistance valves (25), flow valve (24), the entrance point of described second resistance valves (25) is had to be provided with
7th load cell (26), the port of export of described second resistance valves (25) is provided with the 8th load cell (27)；
Described left pipeline high level is provided with first row air valve (14), the first relief valve (15).
6. passive residual heat removal cycle performance test system as claimed in claim 4, its feature exists
In: it is communicated with valve (7) between described vacuum tank (1) and described pressure vessel (9) entrance point,
Described vacuum tank (1) entrance point is provided with replenishing valve (6), and described vacuum tank (1) top is provided with pressurization
Valve (3), second row air valve (4), the second relief valve (5), described vacuum tank (1) side is provided with
The liquidometer (2) of liquid level in measuring vacuum tank (1).
7. the test of a passive residual heat removal cycle performance as claimed in claim 6 test system
Method, comprises the following steps:
Prepare before S1, test: open described first row air valve (14), communicating valve (7), the first resistance
Power valve (17), the second resistance valves (25), second row air valve (4), give remaining by replenishing valve (6)
Hot type goes out circulating analog system, pressure vessel (1) carries out water-filling, until water from first row air valve (14),
Second row air valve (4) place overflows, and opens electric heater (12) slow to the water in pressure vessel (9)
Heating, makes water set up circulation in loop test loop；Monitor pressure vessel (9) port of export simultaneously
Temperature, controls pressure vessel (9) discharge-end temperature by the heating power of regulation electric heater (12)
Less than 85 DEG C, until there is no gas evolution in Residual heat removal circulating analog system, in the process,
Continue through replenishing valve (6) to Residual heat removal circulating analog system water supplement；It is then switched off first row air valve
(14), communicating valve (7), electric heater (12), open replenishing valve (6), make vacuum tank (1)
Interior water discharges part from replenishing valve (6), turns off replenishing valve (6), second row air valve (4),
Open pressurizing valve (3), communicating valve (7), be forced into test system by described pressurizing valve (3)
Exceed water saturated vapor pressure at test temperature；
S2, test are carried out: open described electric heater (12) feedwater heating and make Residual heat removal cyclic module
Plan system sets up circulation, makes pressure vessel (9) by regulating the heating power of described electric heater (12)
Interior water temperature is raised slowly to the test temperature set, and needs each thermometric in monitoring and test system during this
Point, the change in value of pressure tap, the numerical value of described point for measuring temperature respectively by described first temperature element (8),
Second temperature element (10), the 3rd temperature element (22), the 4th temperature element (23) record, institute
State the numerical value of pressure tap respectively by described first load cell (11), the second load cell (13),
Three load cells (19), the 4th load cell (21), the 5th load cell (16), the 6th pressure measurement
Element (18), the 7th load cell (26), the 8th load cell (27) record；Work as pressure vessel
(9) after interior water temperature reaches to test temperature, test system stability more than 10 minutes, constant duration record
Described each point for measuring temperature, the numerical value of pressure tap and the volume flow numerical value of corresponding circulating liquid；
S3, test terminate: close electric heater (12), the first resistance valves (17), the second resistance valves
(25) standard-sized sheet, keeps loop test loop in test system unimpeded, treats pressure vessel (9) interior water temperature
Drop to less than 80 DEG C, open second row air valve (4) by test system decompression to normal pressure, then open first
Air bleeding valve (14), by replenishing valve (6) water emptying in test system, off-test.
8. the method for testing of passive residual heat removal cycle performance test system as claimed in claim 7,
It is characterized in that: the test data under the most multiple operating modes are then passed through on the basis of described S2 step
Regulate the first resistance valves (17), the aperture of the second resistance valves (25), change the resistance in loop test loop
Power, system to be tested stablizes more than 10 minutes again, and constant duration record is each thermometric under this operating mode
Point, the numerical value of pressure tap and the volume flow numerical value of corresponding circulating liquid.
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| CN108231223B (en) | 2019-10-11 |
| CN106024079B (en) | 2018-01-12 |
| CN108231223A (en) | 2018-06-29 |
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