CN103335466B - The cooling of nuclear heat source power-measuring device and overtemperature prote system - Google Patents
The cooling of nuclear heat source power-measuring device and overtemperature prote system Download PDFInfo
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- CN103335466B CN103335466B CN201310109941.4A CN201310109941A CN103335466B CN 103335466 B CN103335466 B CN 103335466B CN 201310109941 A CN201310109941 A CN 201310109941A CN 103335466 B CN103335466 B CN 103335466B
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Abstract
This patent relates to a kind of cooling and overtemperature prote system of nuclear heat source power-measuring device.It is made up of two cooling systems, single pump control unit and two paraffin accumulation of heat boxes, and each cooling system is made up of main pump, secondary pump, finned heat exchanger, fan, tank for coolant, conduit heat exchanger, valve and pipeline.Conduit heat exchanger absorbs heat from the constantan thin slice of sensor.Main pump is drawing liquid from tank for coolant, and cooling fluid is collected through interior conduit heat exchanger and takes away heat, in finned heat exchanger place and air generation forced convection, heat is drained into surrounding environment.Secondary pump is finely tuned cooling liquid speed.Main pump controller regulates pump input voltage, thus regulating loop fluid flow, control cold junction temperature, make system fast and stable.Paraffin accumulation of heat box utilizes wax phase change to control and overtemperature prote measurement mechanism cold junction temperature.The cooling of this measurement mechanism and the effective temperature control of overtemperature prote system, to carry out thermal power measurement, ensure nuclear heat source storage temperature, simple and reliable for structure.
Description
Technical field
The present invention relates to a kind of cooling and overtemperature prote system of nuclear heat source power-measuring device, this system and device is applicable to cooling and the overtemperature prote of nuclear heat source power-measuring device.
Background technology
Nuclear heat source utilizes isotope decay heat production, and this heat change within a short period of time is less, and its core isotopic mass consumption is few, can realize long-term heat supply and the power supply of electronic equipment, have broad application prospects under ultra-low temperature surroundings.
There is core isotope fuels nuclear heat source inside, and there is nuclear screening shell outside.The heating of nuclear heat source inside is uncontrollable, and nuclear heat source external environment condition is to the service life of nuclear heat source and shelf life important.Nuclear heat source external skin temperatures, can long term storage below 160 DEG C, until the inner isotope fuels of nuclear heat source exhausts; External skin temperatures is greater than 160 DEG C, is less than 200 DEG C, and its storage time is decreased to 30 days, and when external skin temperatures is greater than 200 DEG C, its storage time is less than 7 days, even shorter.This requires comparatively harsh to the temperature environment that nuclear heat source measurement mechanism inside is formed.
Meanwhile, for thermal measurement, usually reach thermal balance duration very long, 12 hours can be reached, even longer, be therefore difficult to the thermal power measuring nuclear heat source within a short period of time.
Summary of the invention
One object of the present invention, is to provide a kind of scheme, to overcome the impact of external environment condition on nuclear heat source surface temperature, shortens the time for nuclear heat source power measurement simultaneously.
Another object of the present invention, being to provide when measuring the heating power of nuclear heat source, nuclear heat source power-measuring device being carried out to the solution of temperature control.
Another object of the present invention, is to provide a kind of cooling and overtemperature prote system of nuclear heat source power-measuring device.
According to an aspect of the present invention, provide a kind of cooling and overtemperature prote system of nuclear heat source power-measuring device, it is characterized in that comprising:
First cooling system in parallel and the second cooling system,
Pump control unit,
Be included in the first paraffin accumulation of heat box in described first cooling system and the second cooling system and the second paraffin accumulation of heat box respectively.
Advantage of the present invention comprises:
(1) employing double loop cold junction cooling system, cooling circuit closed loop ACTIVE CONTROL effectively can control cold junction temperature, nuclear heat source thermal power measurement device can be made to reach stable fast simultaneously, shorten the time that nuclear heat source thermal power is measured;
(2) the composite type heat control system adopting double loop cold junction cooling system closed loop ACTIVE CONTROL to combine with based on wax phase change temperature control material, improves the reliability of system;
(3) wax phase change temperature control material can absorb neutrons in nuclei, uses wax phase change accumulation of heat box, make this nuclear heat source power-measuring device have nuclear defence function at this.
Accompanying drawing explanation
The cooling of Fig. 1 nuclear heat source power-measuring device according to an embodiment of the invention and the schematic diagram of overtemperature prote system.
Fig. 2 is the structural representation of conduit heat exchanger.
Fig. 3 finned heat exchanger structural representation.
Fig. 4 paraffin accumulation of heat box structural representation.
Drawing reference numeral explanation
1 constantan thin slice 100 tests hole 101 first cooling system 102 first main pump
103 first time pump 104 first finned heat exchanger 105 first fan 106 first tank for coolant
107 first conduit heat exchanger 108 hand regulator 109 first valves
110 first pipeline 201 the second cooling system 202 second main pumps
203 second time pump 204 second finned heat exchanger 205 second fans
206 second tank for coolant 207 second conduit heat exchanger 209 second valves
210 second pipe 301 pump control unit 302 temperature sensors
303 temperature sensor 304 signal adapter 305 pump drivers
306 power supply 307 controller 401 first paraffin accumulation of heat boxes
402 paraffin 403 first paraffin accumulation of heat box shells
404 first paraffin accumulation of heat box fins
405 first paraffin accumulation of heat box red copper cover plates
501 second paraffin accumulation of heat boxes
502 paraffin 503 second paraffin accumulation of heat box shells
504 second paraffin accumulation of heat box fin 505 second paraffin accumulation of heat box red copper cover plates
Detailed description of the invention
Below in conjunction with specific embodiment, the present invention is set forth further.Should be understood that they are only further illustrate of the present invention, instead of limitation of the invention.
Fig. 1 is cooling and the overtemperature prote system schematic of nuclear heat source power-measuring device according to an embodiment of the invention.As shown in Figure 1, this system comprises: the first and second cooling systems 101 and 201, pump control unit 301, first and second paraffin accumulation of heat box 401 and 501.
First cooling system 101 comprises the first main pump 102, for the first time pump 103, first finned heat exchanger 104, first fan 105, first tank for coolant 106, first conduit heat exchanger 107, first valve 109 and the first pipeline 110.The second cooling system 201 comprises the second main pump 202, second time pump 203, second finned heat exchanger 204, second fan 205, second tank for coolant 206, second conduit heat exchanger 207, second valve 209 and second pipe 210.
When carrying out the measurement of nuclear heat source thermal power, nuclear heat source is put into test hole 100, constantan thin slice 1 hole wall and the nuclear heat source in test hole 100 carry out radiation heat transfer, and conduit heat exchanger 107 and 207(are as shown in Figure 2) absorb heat from the constantan thin slice 1 of test hole, hole wall.First main pump 102 of the first cooling system 101 and the second main pump 202 of the second cooling system 201 extract cooling fluid respectively from the first tank for coolant 106 and the second tank for coolant 206, cooling fluid is when the first conduit heat exchanger 107 and the second conduit heat exchanger 207, cooling liquid is collected and is taken away the heat of the first conduit heat exchanger 107 and the absorption of the second conduit heat exchanger 207, place at the first finned heat exchanger 104 and the second finned heat exchanger 204(as shown in Figure 3), the air generation forced convection driven with the first fan 105 and the second fan 205, drains into surrounding environment by heat.Hand regulator 108 is for regulating the input voltage of pump 103 and second time pump 203 for the first time, thus regulate the flow of cooling fluid in two cooling systems, and then regulate the heat convection heat of finned heat exchanger and surrounding air, thus regulate the temperature of conduit heat exchanger.
As shown in Figure 1, pump control unit 301 comprises temperature sensor 302 and 303, signal adapter 304, pump driver 305, power supply 306, controller 307.Temperature sensor 302 and 303 gathers the temperature analog signal of the first conduit heat exchanger 107 and the second conduit heat exchanger 207, through signal adapter 304, the temperature analog signal that temperature sensor 302 and 303 collects is converted to temperature digital signal and is sent to controller 307, pre-set the control objectives temperature of controller 307; Controller 307 pairs of target temperatures and the temperature collected carry out computing, and output LOW voltage (as 3 volts) pulse width modulation (PWM) control signal, this pulse width modulating signal exports pump driver 305 to.This pulse width modulating signal is carried out amplification pressure regulation (being amplified to as 12 volts) process by pump driver 305, outputting drive voltage (as 12 volts), to drive the first main pump 102 and the second main pump 202, thus make the input voltage of the first main pump 102 and the second main pump 202 adjusted, now, the change of the dutycycle of cause the first main pump 102 and the second main pump 202 input pulse width modulated voltage signal, the fluid flow that first main pump 102 and the second main pump 202 are exported changes, thus makes the fluid flow in cooling system adjusted.The first fan 105 in first cooling system 101 and the second fan 205 in the second cooling system 201 carry out heat convection with the first finned heat exchanger 104 and the second finned heat exchanger 204 respectively, when the discharge quantity of fan of the first fan 105 and the second fan 205 is substantially constant, fluid flow change in the first finned heat exchanger 104 in first cooling system 101 and the second finned heat exchanger 204 in the second cooling system 201 causes the first cooling system 101, the heat radiation thermal change of the second cooling system 201, finally make the first conduit heat exchanger 107, the temperature of the second conduit heat exchanger 207 and the cold junction temperature of measurement mechanism are controlled near target temperature.Because the closed loop ACTIVE CONTROL devising double loop cooling system and cooling circuit (exists the system of controller " ACTIVE CONTROL " in cooling system.And there is no controller, and depend on being called " passive temperature control " of the temperature control that substance characteristics (as wax phase change) carries out), enable nuclear heat source thermal power measurement device reach thermal equilibrium state rapidly, shorten the time of nuclear heat source thermal power.
As shown in Fig. 4 and Fig. 1, in a specific embodiment according to the present invention, the material of the first paraffin accumulation of heat box shell 403 and the second paraffin accumulation of heat box shell 503 is red copper, inside has material to be the first paraffin accumulation of heat box fin 404 and the second paraffin accumulation of heat box fin 504 of red copper, paraffin 402 is placed between the first paraffin accumulation of heat box fin 404 fin, place paraffin 502 between second paraffin accumulation of heat box fin 504 fin, then use the first paraffin accumulation of heat box red copper cover plate 405 and the second paraffin accumulation of heat box red copper cover plate 505 welded seal respectively.Paraffin 402,502 does not fill up space between the first paraffin accumulation of heat box fin 404 and the second paraffin accumulation of heat box fin 504, in order to avoid burst red copper housing when paraffin 402,502 melts.First paraffin accumulation of heat box 401, second paraffin accumulation of heat box 501 is close in the outside wall surface of the first conduit heat exchanger 107, second conduit heat exchanger 207 respectively.In nuclear heat source thermal power measuring process; if the first cooling system 101 and/or the second cooling system 201 fault is out of control or control system can not reach control objectives; when causing the first conduit heat exchanger 107 and/or the second conduit heat exchanger 207 temperature to exceed the fusing point of paraffin 402,502; paraffin 402,502 absorbs heat; undergo phase transition and melt heat absorption, thus realize the function of temperature control and protected by temperature limitation.Phase-change temperature control effect due to this first paraffin accumulation of heat box 401 and the second paraffin accumulation of heat box 501 improves the unfailing performance of nuclear heat source thermal power measurement device.Simultaneously because olefin material itself has the effect absorbing nuclear radiation neutron, paraffin accumulation of heat box 401,501 is adopted to make this nuclear heat source thermal power measurement device possess nuclear defence function herein.
During power measurement, nuclear heat source puts into test hole 100.First conduit heat exchanger 107 and the second conduit heat exchanger 207 absorb the radiant heat that constantan thin slice 1 receives.First main pump 102 of the first cooling system 101 and the second main pump 202 of the second cooling system 201 extract cooling fluid respectively from the first tank for coolant 106 and the second tank for coolant 206, cooling fluid is collected through the first conduit heat exchanger 107 and the second conduit heat exchanger 207 and is taken away the heat of the first conduit heat exchanger 107 and the absorption of the second conduit heat exchanger 207, then in the air generation forced convection that the first finned heat exchanger 104 and the second finned heat exchanger 204 place drive with the first fan 105 and the second fan 205 respectively, heat is drained into surrounding environment.Temperature sensor 302 and 303 gathers the temperature of the first conduit heat exchanger 107 and the second conduit heat exchanger 207 respectively, become after signal adapter 304 is changed and deliver to controller 307, after carrying out computing, output control signals to pump driver 305, pump driver 305 outputting drive voltage drives the first main pump 102 and the first main pump 202, thus the output loop circulation of fluid flow of the first main pump 102 and the second main pump 202 is adjusted, the quantity of heat convection of the first fan 105 and the second fan 205 and the first finned heat exchanger 104 and the second finned heat exchanger 204 is adjusted, temperature and the measurement mechanism cold junction temperature of final first conduit heat exchanger 107 and the second conduit heat exchanger 207 are controlled.In thermal power measuring process; if the first cooling system 101 and/or the second cooling system 201 fault is out of control when causing the first conduit heat exchanger 107 and the second conduit heat exchanger 207 temperature to exceed paraffin 402 and 502 fusing point; paraffin 402 and 502 undergoes phase transition and melts heat absorption, thus realizes the function of temperature control and protected by temperature limitation.
The cooling of this nuclear heat source power-measuring device and overtemperature prote system can be used in control and the protected by temperature limitation of the cold junction temperature of nuclear heat source thermal power measurement device; the composite type heat control system that cooling circuit closed loop ACTIVE CONTROL combines with based on wax phase change temperature control material; not only maintain the duty of thermal power sensor; and effectively the temperature of tested nuclear heat source can be remained on desirable storage requirement in test process kind; shelf life and the service life of nuclear heat source can not be reduced because of measuring process; structure of the present invention is simple, dependable performance.
The content be not described in detail in the present invention belongs to the known prior art of professional and technical personnel in the field.
Should be understood that, below the description carried out the present invention in conjunction with the accompanying drawings and embodiments just illustrates but not determinate, and do not depart from as appended claims under the prerequisite of the present invention that limits, can various change, distortion be carried out to above-described embodiment and/or revise.
Claims (6)
1. the cooling of nuclear heat source power-measuring device and overtemperature prote system, is characterized in that comprising:
First cooling system (101) in parallel and the second cooling system (201),
Pump control unit (301),
Be included in the first paraffin accumulation of heat box (401) in described first cooling system (101) and the second cooling system (201) and the second paraffin accumulation of heat box (501) respectively
Wherein
Described first cooling system (101) comprises the first main pump (102), first time pump (103), the first finned heat exchanger (104), the first fan (105), the first tank for coolant (106), the first conduit heat exchanger (107), the first hand regulator (108)
(201 comprise the second main pump (202), second time pump (203), the second finned heat exchanger (204), the second fan (205), the second tank for coolant (206), the second conduit heat exchanger (207) to described the second cooling system
First and second conduit heat exchangers (107,207) absorb heat for the constantan thin slice (1) of the sensor from described nuclear heat source power-measuring device,
Described first and second main pumps (102,202) for extracting cooling fluid from described first and second tank for coolants (106,206), cooling fluid is made to collect through described first and second conduit heat exchangers (107,207) and take away heat, in the air generation forced convection that described first and second finned heat exchangers (104,204) place and described first and second fans (105,205) drive, thus heat is drained into surrounding environment
First time pump (103) connects with the first main pump (102), and is arranged between the first main pump (102) and the first conduit heat exchanger (107),
Second time pump (203) is connected with the second main pump (202), and is arranged between the second main pump (202) and the second conduit heat exchanger (207),
Described hand regulator (108) for regulating the input voltage of described No. first and second pumps (103,203), thus regulates the output flow of described No. first and second pumps.
2. the cooling of nuclear heat source power-measuring device as claimed in claim 1 and overtemperature prote system, is characterized in that:
Pump control unit (301) comprises the first temperature sensor (302), the second temperature sensor (303), signal adapter (304), pump driver (305), power supply (306), controller (307)
Described first and second temperature sensors (302,303) for gathering the temperature signal of described first and second conduit heat exchangers (107,207),
Signal adapter (304) carries out A/D conversion for the temperature signal that will collect,
Controller (307) for carrying out computing to the temperature signal after A/D conversion, and outputs control signals to pump driver (305),
Pump driver (305) drives the drive singal of described first and second main pumps (102,202) for exporting,
The voltage of wherein said drive singal is adjusted, thus the flow of cooling fluid in the closed circuit making described first and second main pumps (102,202) drive is adjusted, and then make described first and second fans (105,205) adjusted with the quantity of heat convection of described first and second finned heat exchangers (104,204), and reach the adjustment of the described temperature of the first and second conduit heat exchangers and the cold junction temperature of measurement mechanism, thus make system fast and stable.
3. the cooling of nuclear heat source power-measuring device as claimed in claim 2 and overtemperature prote system, is characterized in that:
The shell material of described first and second paraffin accumulation of heat boxes (401,501) is Heat Conduction Material, and inside comprises the rib structure that Heat Conduction Material is made, and places paraffin (402,502) between adjacent fin;
The setting of described first and second conduit heat exchangers (107,207) is close to by described first and second paraffin accumulation of heat boxes (401,501).
4. the cooling of nuclear heat source power-measuring device as claimed in claim 3 and overtemperature prote system, is characterized in that:
Controller (307) carries out computing, output LOW voltage pulse width modulation control signal to target temperature and the temperature collected,
This pulse width modulating signal exports pump driver (305) to,
This pulse width modulating signal is carried out amplification pressure regulation process by pump driver (305), outputting drive voltage, to drive the first main pump (102) and the second main pump (202), thus make the input voltage of the first main pump (102) and the second main pump (202) adjusted
Changed by the dutycycle of the input pulse width modulated voltage signal making the first main pump and the second main pump, the fluid flow that the first main pump and the second main pump are exported changes, thus makes the fluid flow in cooling system adjusted.
5. the cooling of nuclear heat source power-measuring device as claimed in claim 3 and overtemperature prote system, is characterized in that:
Described Heat Conduction Material is red copper.
6. the cooling of the nuclear heat source power-measuring device as described in one of claim 3-5 and overtemperature prote system, is characterized in that:
When carrying out nuclear heat source power measurement; if described first cooling system and/or the second cooling system fault out of control; and the temperature causing described first conduit heat exchanger (107) and/or described second conduit heat exchanger (207) is when exceeding the fusing point of described paraffin (402,502); paraffin melting heat absorption in corresponding first and/or second paraffin accumulation of heat box, thus realize the function of temperature control and protected by temperature limitation.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201310109941.4A CN103335466B (en) | 2013-03-29 | 2013-03-29 | The cooling of nuclear heat source power-measuring device and overtemperature prote system |
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| CN201310109941.4A CN103335466B (en) | 2013-03-29 | 2013-03-29 | The cooling of nuclear heat source power-measuring device and overtemperature prote system |
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| CN103335466B true CN103335466B (en) | 2015-09-23 |
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Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4473528A (en) * | 1980-04-21 | 1984-09-25 | Nucledyne Engineering Corporation | Passive containment system |
| JPH031064A (en) * | 1989-05-29 | 1991-01-07 | Fujitsu Ltd | Freezing preventive control system of cooling device |
| EP0418701A1 (en) * | 1989-09-19 | 1991-03-27 | Mitsubishi Jukogyo Kabushiki Kaisha | Reactor core decay heat removing system in a pressurized water reactor |
| JPH09120789A (en) * | 1995-10-25 | 1997-05-06 | Jeol Ltd | Specimen cooling system |
| CN1437751A (en) * | 2000-12-14 | 2003-08-20 | 埃斯科姆公司 | Cooling system |
| CN101004308A (en) * | 2007-01-24 | 2007-07-25 | 苏树强 | Cold, heat accumulator of composite phase change |
| CN201982969U (en) * | 2011-01-07 | 2011-09-21 | 淮安利安科技发展有限公司 | Automatic control device for cooling water |
-
2013
- 2013-03-29 CN CN201310109941.4A patent/CN103335466B/en not_active Expired - Fee Related
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4473528A (en) * | 1980-04-21 | 1984-09-25 | Nucledyne Engineering Corporation | Passive containment system |
| JPH031064A (en) * | 1989-05-29 | 1991-01-07 | Fujitsu Ltd | Freezing preventive control system of cooling device |
| EP0418701A1 (en) * | 1989-09-19 | 1991-03-27 | Mitsubishi Jukogyo Kabushiki Kaisha | Reactor core decay heat removing system in a pressurized water reactor |
| JPH09120789A (en) * | 1995-10-25 | 1997-05-06 | Jeol Ltd | Specimen cooling system |
| CN1437751A (en) * | 2000-12-14 | 2003-08-20 | 埃斯科姆公司 | Cooling system |
| CN101004308A (en) * | 2007-01-24 | 2007-07-25 | 苏树强 | Cold, heat accumulator of composite phase change |
| CN201982969U (en) * | 2011-01-07 | 2011-09-21 | 淮安利安科技发展有限公司 | Automatic control device for cooling water |
Non-Patent Citations (1)
| Title |
|---|
| 基于相变冷却的大功率二极管激光器技术;高松信等;《强激光与粒子束》;20110731;第23卷(第7期);1823-1826 * |
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