CN105910843B - A kind of heat loss method of testing of thermal technology's combined test apparatus - Google Patents
A kind of heat loss method of testing of thermal technology's combined test apparatus Download PDFInfo
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- CN105910843B CN105910843B CN201610524433.6A CN201610524433A CN105910843B CN 105910843 B CN105910843 B CN 105910843B CN 201610524433 A CN201610524433 A CN 201610524433A CN 105910843 B CN105910843 B CN 105910843B
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Abstract
The invention discloses a kind of heat loss method of testing of thermal technology's combined test apparatus, comprises the following steps：A, determine heat loss measurement condition, b, set up heat loss measurement condition, c, blocking secondary coolant circuit system, residual heat removal system, the low-temperature receiver of low-temperature receiver simulation system, d, carry out heat loss test, e, judge thermal equilibrium state, heat loss test think of method of the present invention is simple and reliable, the heat loss power of thermal technology's combined test apparatus is the main heat source simulator under thermal equilibrium state, the power of heat source sum of secondary thermal source simulator, heat loss method of testing of the present invention is independent of low flow velocity flow measurement accuracy, not high to temperature survey precise requirements, complex data process need not be carried out, without cumulative errors, pinpoint accuracy can be obtained, the heat loss measured power of high reliability.
Description
Technical field
The present invention relates to heat loss technical field of measurement and test, and in particular to a kind of heat loss test of thermal technology's combined test apparatus
Method.
Background technology
In Nuclear Power Technology field, thermal technology's combined test apparatus must accurate simulation nuclear reactor system and ad hoc safety
The simulation of system prototype, wherein thermal boundary is one of key problem of overall simulation, if thermal boundary analog distortion is larger, even if thermal source
Preferably simulated, then engineered safety system cooling capacity still suffers from larger distortion, it means that result of the test cannot feed back to
Prototype gets on, and the validity of thermal technology's compbined test cannot ensure.Therefore, it is necessary to thermal boundary is accurately simulated, and thermal boundary simulation
Basis be exactly acquisition heat loss power of the experimental rig under different pressures and temperature case.
In practice, thermal technology's combined test apparatus are one by thermal source simulator, hot trap simulator, pressure vessel, heat friendship
The complication system of the large number quipments such as parallel operation, pump, valve, power conduit, measuring instrumentss composition, its loss difficulty of test is much larger than single
One equipment or single Test section, and the power level of thermal technology's combined test apparatus institute simulated accident operating mode is relatively low causes heat loss
Difficulty of test increases further, traditional heat loss method of testing be by measuring each equipment fluid flow and import and export one by one
Temperature, is then calculated the thermal power of absorption of fluids in each equipment and obtains the thermal power summation of all devices, then with heat
Source power is subtracted each other and obtains experimental rig Total heat loss, due to the differential temperature survey under lower power levels and the flow measurement under low speed difficult
Degree is larger and accuracy is excessively poor, and heat loss power there is also certain error when cumulative.
Therefore the accuracy and reliability of the heat loss method of testing of this temperature dependent, flow measurement and data processing
Low, it is difficult to meet the requirements at the higher level of thermal technology's compbined test, need the new technology of innovation heat loss test badly, research and develop new heat waste
Lose method of testing.
Content of the invention
It is to pass through that the technical problem to be solved is traditional thermal technology's combined test apparatus heat loss method of testing
Measure each equipment fluid flow and out temperature one by one, then calculate in each equipment the thermal power of absorption of fluids and obtain
The thermal power summation of all devices, then subtract each other i.e. with power of heat source and obtain experimental rig Total heat loss, the method for testing is in low work(
Under rate level, greatly, poor accuracy, heat loss power are present necessarily when cumulative for differential temperature survey and the dirty measurement difficulty of low flow velocity
Error, reliability are low, it is impossible to meet the requirements at the higher level of thermal technology's compbined test, present invention aim at provide a kind of thermal technology comprehensively trying
The heat loss method of testing of experiment device, including setting up heat loss measurement condition, low-temperature receiver blocking, control power of heat source, judging that heat is flat
The steps such as weighing apparatus, whole operation step is independent of flow, not high to temperature survey precise requirements, it is not necessary to carry out at complex data
Reason, you can obtain pinpoint accuracy, the heat loss power of reliability, the level for solving the simulation of thermal technology compbined test is low, can low temperature
Measurement and the dirty measurement difficulty of low flow velocity are big, the low technical problem of accuracy.
The present invention is achieved through the following technical solutions：
A kind of heat loss method of testing of thermal technology's combined test apparatus, comprises the following steps：
A, determine heat loss measurement condition
Determine reactor and primary Ioops system, the pressure of residual heat removal system, temperature, the temperature of voltage-stablizer respectively；
B, set up heat loss measurement condition
B.1, the heat loss measurement condition determined according to step a, in reactor and primary Ioops system, secondary coolant circuit system all
Heat-preservation cotton is laid, starts main pump and residual heat removal pump, put into main heat source simulator and heat is discharged to reactor simulator, put into secondary
Thermal source simulator discharges heat to voltage-stablizer, so that the pressure of reactor and primary Ioops system and residual heat removal system, temperature is all gone up
Rise, -1 ~ 1MPa of differing pressure of determination, the temperature of voltage-stablizer and step to the pressure of reactor and primary Ioops system and step a
- 1 ~ 1 DEG C of the temperature difference determined in rapid a；
B.2, start secondary coolant circuit system, main steam valve, the aperture of main feed valve is adjusted, adjust the cooling of steam turbine simulator
Ability；
B.3, start low-temperature receiver simulation system, low-temperature receiver inlet valve, the aperture of low-temperature receiver outlet valve is adjusted, adjust low-temperature receiver simulator
Cooling capacity；
C, blocking secondary coolant circuit system, residual heat removal system, the low-temperature receiver of low-temperature receiver simulation system
The heat loss measurement condition that has set up is maintained not less than 20 minutes, isolation main steam valve, main feed valve, low-temperature receiver import
Valve and low-temperature receiver outlet valve, reduce main heat source simulator, the power of secondary thermal source simulator；
D, development heat loss test
After completing step c blocking secondary coolant circuit system, residual heat removal system, low-temperature receiver simulation system low-temperature receiver, main heat source mould is adjusted
Intend device input reactor simulator heat release power, adjust the heat release power that time thermal source simulator puts into voltage-stablizer；
E, judge thermal equilibrium state
In the step c heat loss test process, reactor and primary Ioops system, the temperature of residual heat removal system are -2 ~ 2
Fluctuate in DEG C, that is, judge that thermal technology's combined test apparatus reach thermal equilibrium state, heat loss power is main heat source simulator and time heat
Source simulator sum.
In step a, heat loss measurement condition is determined, that is, determine 5 different operating points, reactor and primary Ioops system
The pressure of system, the pressure of residual heat removal system, the temperature of reactor and primary Ioops system, the temperature of residual heat removal system, voltage stabilizing
The temperature of device.
In the present invention, thermal technology's combined test apparatus must accurate simulation nuclear reactor system and engineered safety system original
The simulation of type, wherein thermal boundary is one of key problem of overall simulation.If thermal boundary analog distortion is larger, i.e., thermal source is obtained preferably
Simulation, and ad hoc safe simulation system cooling capacity still suffers from larger distortion, then result of the test cannot be fed back in prototype, thermal technology
The validity of test cannot ensure.Therefore, it is not required to accurately simulate thermal boundary, the basis of thermal boundary simulation is accurately to obtain examination
Heat loss power of the experiment device under different pressures and temperature case.The present invention is to test to obtain heat loss by heat loss
Power.Heat loss test is the heat loss power for testing whole circuit system under different pressures and temperature case.Therefore, opening
Need first to determine pressure and temperature of thermal technology's combined test apparatus etc. before exhibition heat loss test.
B.1 middle input main heat source simulator discharges heat in reactor simulator to the step, puts into time thermal source simulation
To after voltage-stablizer release heat, the pressure of reactor and primary Ioops system and residual heat removal system, temperature are all gradually increasing device, extremely
The pressure of reactor and primary Ioops system is equal with the pressure determined in step a, in the temperature of voltage-stablizer and step a
The temperature of determination is equal.
Be that heat is discharged to main heat source simulator in reactor simulator herein, put into time thermal source simulator to voltage-stablizer
After release heat, reactor and primary Ioops system, the pressure of residual heat removal system, the temperature of voltage-stablizer, the temperature of three operating points
Degree, pressure parameter are defined.
The step b.2 in, start secondary coolant circuit system, adjust steamer device simulator cooling capacity, make reactor and one
The temperature of circuit system is raised, the step b.3 in, start low-temperature receiver simulation system, adjust the cooling capacity of low-temperature receiver simulator, most
Make the temperature of the temperature of residual heat removal system and the step b.2 in middle reactor and primary Ioops system equal eventually.
In step c, reduce the power of main heat source simulator and time thermal source simulator, to reactor and primary Ioops system
After system, the temperature and pressure of residual heat removal system remain unchanged, depleted of steam generator analogue body secondary side and Residual heat removal are cold
But the fluid of device secondary side.
The decision method of thermal equilibrium state in step e, has taken into account thermodynamics general principle and operative practice experience two
Individual aspect, according to thermodynamics general principle, if pressure and temperature no longer changes in system, shows the energy of input system
The energy of amount and output system is equal, i.e., whether thermal technology's combined test apparatus pressure and temperature maintain stably can be used as experimental rig
Whether the decision criteria of thermal equilibrium state is reached；Find in operative practice, pressure change excessively sensitive and influence factor is excessive,
Thus should not be used as critical parameter, should be using temperature as the judgement parameter of thermal equilibrium state.
Further, in heat loss method of testing of the present invention, wherein reactor and primary Ioops system are moved for core
The prior art of power technical field, is conventional technological means.Reactor and primary Ioops system include main heat source simulator, secondary heat
Source simulator, reactor simulator, voltage-stablizer, steam generator analogue body, main pump, the main heat source simulator successively with reaction
Heap simulator, main pump, steam generator analogue body connection, secondary thermal source simulator by voltage-stablizer successively with reactor simulator,
Steam generator analogue body connects.
Also known as reaction primary Ioops main system, the effect of voltage-stablizer in the system is control to wherein reactor and primary Ioops system
The pressure of cooling agent, prevents reactor core from producing departure nucleate boiling, is additionally provided with safety valve on some voltage-stablizers, protect with superpressure
The effect of shield.
Main heat source simulator and time thermal source simulator are thermal source simulator, and its structure and principle are Nuclear Power Technology field
Prior art, be clearly.
Steam generator analogue body is the machinery for water being heated into using the heat energy of fuel or other energy hot water or steam
Equipment, the structure of steam generator analogue body and its operation principle for Nuclear Power Technology field prior art, and be clearly,
No longer describe in detail herein.
Main pump, in Nuclear Power Technology field, also known as core main pump, is applied in each system of nuclear power station, cold water is pumped into steaming
Device conversion thermal energy is sent out, is the key of nuclear power operating control water circulation, each steam generator analogue body all has a main pump to connect
Connect.
Main pump, the structure of reactor simulator and its operation principle are the prior art in nuclear power field, herein no longer
Describe in detail.
Wherein in reactor and primary Ioops system, the annexation of each part is the prior art in Nuclear Power Technology field,
In the technical program, the explanation of wherein annexation is made.
Further, secondary coolant circuit system includes main steam valve, main feed valve, steam turbine simulator, the steam generator
Main steam valve, main feed valve are respectively equipped with two pipelines that analogue body is connected with steam turbine simulator.
The Main Function of secondary coolant circuit system is that the saturated vapor for producing steam generator analogue body is done for steam turbine generator
Work(, while it is that other auxiliary equipments of power station are used also to provide steam.The steam for finishing work(condenses into water within the condenser, by condensing
Water is squeezed into steam generator analogue body by water system.
The effect of main steam valve, main feed valve in secondary coolant circuit system be by adjusting main steam valve, the opening of main feed valve
Degree, adjusts the cooling capacity of steam turbine simulator, so as to adjust the temperature of reactor and primary Ioops system.
Further, residual heat removal system includes Residual heat removal cooler, residual heat removal pump, and the reactor simulator leads to
Cross residual heat removal pump and be connected and formed closed-loop path with Residual heat removal cooler.
Residual heat removal system is that also referred to as shutdown cooling system, is to stop for the system for discharging residual heat of nuclear core during cold shutdown
In the remaining heat release of reactor core after heap and system, the sensible heat of medium and equipment, is transmitted to final heat by component cooling water system
Trap.
Wherein Residual heat removal cooler for heat exchanger one kind, or residual heat removal exchanger, its structure and
Its principle is the prior art in Nuclear Power Technology field, is applied to the routine for Nuclear Power Technology field in heat loss test
Technological means, no longer describes in detail.
Wherein low-temperature receiver simulator is one kind of hot trap simulator, and low-temperature receiver inlet valve, the effect of low-temperature receiver outlet valve are to pass through
The aperture of the two, and then the cooling capacity of regulation low-temperature receiver simulator is adjusted, and then realizes the temperature to residual heat removal system.
The present invention compared with prior art, has the following advantages and advantages：
（1）The present invention is independent of flow measurement using the method for thermal technology's combined test apparatus test heat loss, to temperature
Measuring accuracy is less demanding, it is not necessary to carry out complex data process, and the heat loss power accuracy height of acquisition, reliability are high,
Heat loss method of testing of the present invention can not only be applied to thermal technology's combined test apparatus in the research and development of Nuclear Power Technology field
Heat loss test, it is also possible to be applied to power of heat source controllable type thermal apparatus in other field heat loss test.
（2）After the present invention sets up heat loss measurement condition, low-temperature receiver is blocked, the low-temperature receiver blocking-up method can separate heat
Work combined test apparatus take away whole passages of heat by fluid, it is ensured that the net quantity of heat of whole thermal technology's combined test apparatus is equal
Scattered and disappeared by the heat-preservation cotton surface arranged in equipment and pipeline.
（3）The power of heat source control method being related in heat loss method of testing of the present invention can be quantitatively to experimental rig
Interior fluid discharges heat, and main heat source simulator discharges heat to fluid flow region, and secondary thermal source simulator is individually to fluid non-streaming
It is high that dynamic region discharges heat, the controllable and measurable amount of power of heat source, and accuracy.
（4）It is substantially former that the thermal equilibrium state decision method being related in heat loss method of testing of the present invention has taken into account thermodynamics
Reason and operative practice experience, maintain the stable judgement standard for reaching thermal equilibrium state as thermal technology's combined test apparatus using system temperature
Then, with the advantage that the degree of accuracy is high and workable.
Description of the drawings
Accompanying drawing described herein is used for providing further understanding the embodiment of the present invention, constitutes of the application
Point, do not constitute the restriction to the embodiment of the present invention.In the accompanying drawings：
Fig. 1 is the Structure and Process schematic block diagram of thermal technology's combined test apparatus in the present invention.
Mark and corresponding parts title in accompanying drawing：
1- main heat source simulator, 2- thermal source simulator, 3- reactor simulator, 4- voltage-stablizer, 5- steam generator mould
Intend body, 6- main pump, 7- main steam valve, 8- steam turbine simulator, 9- main feed valve, 10- Residual heat removal cooler, 11- waste heat are arranged
Go out pump, 12- low-temperature receiver inlet valve, 13- low-temperature receiver simulator, 14- low-temperature receiver outlet valve.
Specific embodiment
For making the object, technical solutions and advantages of the present invention become more apparent, with reference to embodiment and accompanying drawing, to this
Invention is described in further detail, and the exemplary embodiment of the present invention and its explanation are only used for explaining the present invention, do not make
For limitation of the invention.
Embodiment 1：
A kind of heat loss method of testing of thermal technology's combined test apparatus of the present invention, comprises the following steps,
A, determine heat loss measurement condition
Determine reactor and primary Ioops system, the pressure of residual heat removal system, temperature respectively, the temperature of voltage-stablizer 4, i.e., really
Fixed 1 operating point, the pressure including reactor and primary Ioops system, residual heat removal system is 15MPa, reactor and primary Ioops system
The temperature of system is 300 DEG C, and the temperature of voltage-stablizer 4 is 350 DEG C.
B, set up heat loss measurement condition
B.1, the heat loss measurement condition determined according to step a, in reactor and primary Ioops system, secondary coolant circuit system all
Heat-preservation cotton is laid, starts main pump 6 and residual heat removal pump 11, put into main heat source simulator 1 and 1.8MW is discharged to reactor simulator 3
Heat, puts into time thermal source simulator 2 and discharges 144kw heat to voltage-stablizer 4, make reactor and primary Ioops system and Residual heat removal system
The pressure of system, temperature are all gradually increasing, and to the pressure 15MPa of reactor and primary Ioops system, the temperature of voltage-stablizer 4 is 350 DEG C；
B.2, start secondary coolant circuit system, main steam valve 7, the aperture of main feed valve 9 is adjusted, adjust steam turbine simulator（8）
Cooling capacity, the temperature for making reactor and primary Ioops system is 320 DEG C；
B.3, start low-temperature receiver simulation system, the low-temperature receiver inlet valve 12, aperture of low-temperature receiver outlet valve 14 is adjusted, adjust low-temperature receiver simulation
The cooling capacity of device 13, the temperature for finally making residual heat removal system are 320 DEG C；
C, blocking secondary coolant circuit system, residual heat removal system, the low-temperature receiver of low-temperature receiver simulation system
The heat loss measurement condition parameter that maintenance has been set up 20 minutes, isolation main steam valve 7, main feed valve 9, low-temperature receiver import
Valve 12 and low-temperature receiver outlet valve 14, reduce the main heat source simulator 1, power of secondary thermal source simulator 2, when 1 power of main heat source simulator
320kw is reduced to, when secondary 2 power of thermal source simulator is reduced to 72kw, the pressure of reactor and primary Ioops system, residual heat removal system
Till power and temperature no longer rise, the stream of 5 secondary side of depleted of steam generator analogue body and 10 secondary side of Residual heat removal cooler
Body；
D, development heat loss test
After completing step c blocking secondary coolant circuit system, residual heat removal system, low-temperature receiver simulation system low-temperature receiver, main heat source mould is adjusted
Intend the heat release power of 1 input reactor simulator 3 of device, adjust the heat release power that time thermal source simulator 2 puts into voltage-stablizer 4, i.e., when
When the temperature of reactor and primary Ioops system, residual heat removal system all declines, then lifting main heat source simulator 1 and time thermal source simulation
The heat release power of device 2；
E, judge thermal equilibrium state
In the step c heat loss test process, the power of main heat source simulator 1 is reduced to 148kw, secondary thermal source simulator
2 power is reduced to 11kw, and now, the range of temperature of voltage-stablizer 4 is 351.2 ~ 352 DEG C, reactor and primary Ioops system,
The range of temperature of residual heat removal system is 320.1 ~ 321.6 DEG C, i.e. reactor and primary Ioops system, residual heat removal system
Temperature is fluctuated in the range of ± 2 DEG C.Judge that thermal technology's combined test apparatus reach thermal equilibrium state, heat loss power is main heat source
Simulator 1 and time 2 sum of thermal source simulator, i.e. 159kw.
Embodiment 2：
As shown in figure 1, thermal technology's combined test apparatus, the device includes reactor and primary Ioops system, secondary coolant circuit system, remaining
Hot discharge system, low-temperature receiver simulation system, the reactor and primary Ioops system include main heat source simulator 1, secondary thermal source simulator
2nd, reactor simulator 3, voltage-stablizer 4, steam generator analogue body 5, main pump 6, the main heat source simulator 1 successively with reactor
Simulator 3, main pump 6, steam generator analogue body 5 connect, and secondary thermal source simulator 2 is simulated with reactor successively by voltage-stablizer 4
Device 3, steam generator analogue body 5 connect.
Also known as reaction primary Ioops main system, the effect of voltage-stablizer 4 in the system is control to wherein reactor and primary Ioops system
The pressure of cooling agent processed, prevents reactor core from producing departure nucleate boiling, is additionally provided with safety valve on some voltage-stablizers 4, with super
The effect of pressure protection.
Main heat source simulator 1 and time thermal source simulator 2 are thermal source simulator, and its structure and principle are led for Nuclear Power Technology
The prior art in domain, be clearly.
Steam generator analogue body 5 is the machinery for water being heated into using the heat energy of fuel or other energy hot water or steam
Equipment, the structure of steam generator analogue body 5 and its operation principle are the prior art in Nuclear Power Technology field, and are clear
, no longer describe in detail herein.
Main pump 6, in Nuclear Power Technology field, also known as core main pump, is applied in each system of nuclear power station, cold water is pumped into steaming
Device conversion thermal energy is sent out, is the key of nuclear power operating control water circulation, each steam generator analogue body 5 all has a main pump 6
Connection.
Main pump 6, the structure of reactor simulator 3 and its operation principle are the prior art in nuclear power field, herein not
Describe in detail again.
Wherein in reactor and primary Ioops system, the annexation of each part is the prior art in Nuclear Power Technology field,
In the technical program, the explanation of wherein annexation is made.
The secondary coolant circuit system includes main steam valve 7, main feed valve 9, steam turbine simulator 8, the steam generator mould
Intend being respectively equipped with main steam valve 7, main feed valve 9 on two pipelines that body 5 is connected with steam turbine simulator 8.
The Main Function of secondary coolant circuit system is that the saturated vapor for producing steam generator analogue body 5 is done for steam turbine generator
Work(, while it is that other auxiliary equipments of power station are used also to provide steam.The steam for finishing work(condenses into water within the condenser, by condensing
Water is squeezed into steam generator analogue body 5 by water system.
Main steam valve 7, the effect of main feed valve 9 in secondary coolant circuit system be by adjust main steam valve 7, main feed valve 9
Aperture, adjust the cooling capacity of steam turbine simulator 8, so as to adjust the temperature of reactor and primary Ioops system.
The residual heat removal system includes Residual heat removal cooler 10, residual heat removal pump 11, and the reactor simulator 3 leads to
Cross residual heat removal pump 11 and be connected and formed closed-loop path with Residual heat removal cooler 10.
Residual heat removal system is that also referred to as shutdown cooling system, is to stop for the system for discharging residual heat of nuclear core during cold shutdown
In the remaining heat release of reactor core after heap and system, the sensible heat of medium and equipment, is transmitted to final heat by component cooling water system
Trap.
Wherein Residual heat removal cooler 10 is one kind of heat exchanger, or residual heat removal exchanger, its structure
And its principle is the prior art in Nuclear Power Technology field, it is applied to for the normal of Nuclear Power Technology field in heat loss test
Rule technological means, no longer describes in detail.
The low-temperature receiver simulation system includes low-temperature receiver inlet valve 12, low-temperature receiver outlet valve 14, low-temperature receiver simulator 13, and the low-temperature receiver enters
Mouth valve 12, low-temperature receiver outlet valve 14 are separately positioned on two pipelines that Residual heat removal cooler 10 is connected with low-temperature receiver simulator 13.
Wherein low-temperature receiver simulator 13 is one kind of hot trap simulator, and low-temperature receiver inlet valve 12, the effect of low-temperature receiver outlet valve 14 are
It is by adjusting the aperture of the two, and then the cooling capacity of low-temperature receiver simulator 13 is adjusted, and then realizes to residual heat removal system
Temperature.
Embodiment 3：
The present embodiment is used as the comparative example of embodiment 1 and 2：
The heat loss method of testing of existing thermal technology's combined test apparatus will be illustrated, comprise the following steps：
A, determine heat loss measurement condition
Identical with the step a operation in embodiment 1.
B, set up heat loss measurement condition
Identical with the step b operation in embodiment 1.
C, measurement flow and temperature parameter
Keep main heat source simulator 1 constant with time thermal source 2 power of simulator, make loop parameter stablize 20 minutes；Measurement master
Pump 6 and the flow of residual heat removal pump 11, measurement reactor simulator 3, steam generator analogue body 5, the simulation of main pump 6, steam turbine
The turnover of the pipeline between equipment and each equipment such as device 8, Residual heat removal cooler 10, residual heat removal pump 11, low-temperature receiver simulator 13
Mouth temperature.
In measurement process, 6 flow of main pump and 11 flow of residual heat removal pump measure inaccurate or accuracy not in following situations
High：（1）Low flow velocity, current precision highest import ultrasonic flow accurately cannot be measured when less than 0.02m/s, low in speed
In 0.05m/s, during higher than 0.03m/s, precision is less than ± 5%；（2）Two-phase flow is occurred in that in equipment and pipeline, flow cannot be surveyed
Amount.
Between equipment and each equipment, the out temperature measure error of pipeline is very big：Due to having laid heat-preservation cotton, if
Preferably, thus the import and export temperature difference of equipment especially pipeline is less, the temperature that usual pipeline is imported and exported for the heat insulation effect of standby and pipeline
For 1-3 DEG C, current RTD certainty of measurement is 1 DEG C to difference, and the thermocouple measurement precision of I class precision is 1 ~ 2 DEG C, the temperature that thus brings
Difference measurements error is ± 30% ~ ± 200%.
D, development heat loss test
The basic skills of heat loss test is the heat loss of first measurement individual equipment and pipeline, then by all devices and pipeline
Heat loss be added, obtain the total heat loss of thermal technology's comprehensive experimental device.
The heat loss of individual equipment is equal to the product of flow, the import and export temperature difference and mean specific heat and deducts electrical heating power again
Or low-temperature receiver power, the heat loss of single pipeline is equal to flow, imports and exports the product of the temperature difference and mean specific heat.Individual equipment and pipe
Road is due to flow and temperature measurement technology problem, when flow velocity is less than 0.02m/s or when occurring in that two-phase flow, existing heat waste
Lose measuring technology to carry out；Under big flow velocity operating mode, single pipeline is surveyed because importing and exporting the heat loss that differential temperature survey error is brought
Examination error is more than ± 30%, or even the heat loss for obtaining is negative, runs counter to the natural law；In flow velocity less than 0.05m/s it is higher than
During 0.03m/s, heat loss test error can expand further.
Due to the heat loss sum that the total heat loss of thermal technology's comprehensive experimental device is all devices and pipeline, each equipment and pipe
The heat loss test result error in road is big, causes total heat loss test result error larger and is difficult to estimate, test result according to
Bad flow and temperature survey, precision and reliability are low.
And the heat loss method of testing described in the embodiment of the present invention be independent of flow measurement, to temperature survey precise requirements
Not high, complex data process need not be carried out, you can obtain pinpoint accuracy, the heat loss measured power of high reliability.And this
Heat loss method of testing described in bright embodiment 1 and embodiment 2 has wide applicability, can research and develop field from Nuclear Power Technology
Extend to general thermal technology's application.
Above-described specific embodiment, has been carried out to the purpose of the present invention, technical scheme and beneficial effect further
Describe in detail, the specific embodiment that the foregoing is only the present invention is should be understood that, is not intended to limit the present invention
Protection domain, all any modification, equivalent substitution and improvement that within the spirit and principles in the present invention, is done etc., all should include
Within protection scope of the present invention.
Claims (4)
1. a kind of heat loss method of testing of thermal technology's combined test apparatus, thermal technology's combined test apparatus include reactor and one
Circuit system, secondary coolant circuit system, residual heat removal system, low-temperature receiver simulation system, it is characterised in that comprise the following steps：
A, determine heat loss measurement condition
Determine reactor and primary Ioops system, the pressure of residual heat removal system, temperature, the temperature of voltage-stablizer (4) respectively；
B, set up heat loss measurement condition
B.1, the heat loss measurement condition determined according to step a, all lays in reactor and primary Ioops system, secondary coolant circuit system
Heat-preservation cotton, starts main pump (6) and residual heat removal pump (11), puts into main heat source simulator (1) to reactor simulator (3) release heat
Amount, puts into time thermal source simulator (2) and discharges heat to voltage-stablizer (4), make reactor and primary Ioops system and residual heat removal system
Pressure, temperature all rise, -1～1MPa of differing pressure determined to pressure and step a of reactor and primary Ioops system,
- 1～1 DEG C of the temperature difference determined in the temperature of voltage-stablizer (4) and step a；
B.2, start secondary coolant circuit system, main steam valve (7), the aperture of main feed valve (9) is adjusted, adjust steam turbine simulator (8)
Cooling capacity；
B.3, start low-temperature receiver simulation system, low-temperature receiver inlet valve (12), the aperture of low-temperature receiver outlet valve (14) is adjusted, adjust low-temperature receiver simulation
The cooling capacity of device (13)；
C, blocking secondary coolant circuit system, residual heat removal system, the low-temperature receiver of low-temperature receiver simulation system
Maintain the heat loss measurement condition that has set up not less than 20 minutes, isolation main steam valve (7), main feed valve (9), low-temperature receiver enter
Mouth valve (12) and low-temperature receiver outlet valve (14), reduce main heat source simulator (1), the power of secondary thermal source simulator (2)；
D, development heat loss test
After completing step c blocking secondary coolant circuit system, residual heat removal system, low-temperature receiver simulation system low-temperature receiver, main heat source simulator is adjusted
(1) the heat release power of input reactor simulator (3), adjusts the heat release power that time thermal source simulator (2) puts into voltage-stablizer (4)；
E, judge thermal equilibrium state
In the step c heat loss test process, reactor and primary Ioops system, the temperature of residual heat removal system are at -2～2 DEG C
Interior fluctuation, that is, judge that thermal technology's combined test apparatus reach thermal equilibrium state, and heat loss power is main heat source simulator (1) and time heat
Source simulator (2) sum；
The reactor and primary Ioops system include main heat source simulator (1), secondary thermal source simulator (2), reactor simulator
(3), voltage-stablizer (4), steam generator analogue body (5), main pump (6), main heat source simulator (1) are simulated with reactor successively
Device (3), main pump (6), steam generator analogue body (5) connection, secondary thermal source simulator (2) by voltage-stablizer (4) successively with reaction
Heap simulator (3), steam generator analogue body (5) connection；
The secondary coolant circuit system includes main steam valve (7), main feed valve (9), steam turbine simulator (8), the steam generator
Main steam valve (7), main feed valve (9) is respectively equipped with steam turbine simulator (8) on two pipelines that analogue body (5) is connected；
The residual heat removal system includes Residual heat removal cooler (10), residual heat removal pump (11), reactor simulator (3)
It is connected and is formed closed-loop path by residual heat removal pump (11) with Residual heat removal cooler (10)；
The low-temperature receiver simulation system includes low-temperature receiver inlet valve (12), low-temperature receiver outlet valve (14), low-temperature receiver simulator (13), the low-temperature receiver
Inlet valve (12), low-temperature receiver outlet valve (14) are separately positioned on two that Residual heat removal cooler (10) is connected with low-temperature receiver simulator (13)
On bar pipeline.
2. the heat loss method of testing of a kind of thermal technology's combined test apparatus according to claim 1, it is characterised in that：Described
Step b.1 in, put into main heat source simulator (1) to release heat in reactor simulator (3), put into time thermal source simulator (2)
To after voltage-stablizer (4) release heat, the pressure of reactor and primary Ioops system and residual heat removal system, temperature are all gradually increasing,
Pressure to reactor and primary Ioops system is equal with the pressure that step a determines, the temperature of voltage-stablizer (4) is determined with step a
Temperature is equal.
3. the heat loss method of testing of a kind of thermal technology's combined test apparatus according to claim 2, it is characterised in that：Described
Step b.2 in, start secondary coolant circuit system, adjust the cooling capacity of steamer device simulator (8), make reactor and primary Ioops system
Temperature is raised；The step b.3 in, start low-temperature receiver simulation system, adjust the cooling capacity of low-temperature receiver simulator (13), finally make remaining
The temperature of the temperature of hot discharge system and the step b.1 in middle reactor and primary Ioops system is equal.
4. the heat loss method of testing of a kind of thermal technology's combined test apparatus according to claim 1, it is characterised in that：Described
In step c, reduce the power of main heat source simulator (1) and time thermal source simulator (2), to reactor and primary Ioops system, waste heat
The temperature and pressure of discharge system remains unchanged, depleted of steam generator analogue body (5) secondary side and Residual heat removal cooler
(10) fluid of secondary side.
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| CN106531246B (en) * | 2016-11-25 | 2017-12-05 | 中国核动力研究设计院 | Heat Discharging System of Chinese tests initial operating mode method for building up and experimental method under moving condition |
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| CN109192343B (en) * | 2018-07-11 | 2020-06-05 | 岭澳核电有限公司 | Method and device for reducing measurement deviation of pressurized water reactor external nuclear measurement system |
| CN111627577B (en) * | 2020-06-05 | 2022-02-22 | 中国核动力研究设计院 | Test system and test method for performance evaluation of active equipment in accident environment |
| CN112330124B (en) * | 2020-10-28 | 2024-03-12 | 广东核电合营有限公司 | Method and system for evaluating influence of accident environment on uncertainty of instrument channel |
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