CN102254577B - Liquid sodium metal thermohydraulic experimental loop system and using method thereof - Google Patents
Liquid sodium metal thermohydraulic experimental loop system and using method thereof Download PDFInfo
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Abstract
The invention discloses a liquid sodium metal thermohydraulic experimental loop system. The loop system comprises a sodium filling system, a loop body, a vacuum system, an argon system and a glove box, wherein the sodium filling system comprises a sodium fusion tank and a sodium filter; the loop body mainly comprises a sodium storage tank, a pump box, a main electromagnetic pump, an auxiliary electromagnetic pump, a preheater, a test section, a radiator, a calibration barrel and a cold trap; and the glove box mainly comprises a sodium sampling analysis device. By the system, sodium filling operation can be realized, liquid sodium metal heat transfer flow characteristics are analyzed, liquid sodium metal is purified on line, an electromagnetic flowmeter is calibrated, and multiple functions of sampling analysis, detection and the like of the liquid sodium metal are realized.
Description
Technical field
The present invention relates to a kind of liquid sodium metal thermohydraulic experimental loop system, belong to Engineering Thermophysics and energy utilization ambit.
Background technology
Nuclear energy has occupied more and more consequence at world today's energy field, and along with the development of nuclear energy, how to utilize fully limited uranium resource, effectively processes nuke rubbish, has day by day caused people's attention.Effective outlet that the cold fast neutron reactor of sodium addresses the above problem just at present.Although the sodium as the sodium-cooled fast reactor cooling medium has good heat conductivility and flow characteristics, due to its active chemical property, make the research for its thermal-hydraulic performance have very big difficulty.For the design-build of fast reactor and the safety analysis of stack operation soon, the research of the hot-working hydraulic characteristic of liquid metal sodium is absolutely necessary again.Therefore must construction can complete the experimental provision that the liquid metal sodium hot-working hydraulic characteristic is analyzed and researched.
For example, Chinese patent CN201138577 provides a kind of fill-drain syctem of sodium-cooled fast reactor one loop sodium, and it comprises that the outlet of storage sodium tank is connected with the electromagnetic pump entrance, electromagnetic pump outlet and a circuit communication; One loop is connected with storage sodium tank entrance; Storage sodium tank, mortejus are connected with respectively argon system, and storage sodium tank entrance gets the mortejus outlet with the system lowest part of being positioned at and is communicated with, the pipeline communication of mortejus entrance and system's lowest part.This security of system is reliable, and is simple in structure, can sodium discharging in e-quipment and pipe is clean.In addition, Chinese patent CN201111964 provides a kind of in-line purification system of sodium-cooled fast reactor secondary sodium, and its cold-trap is connected with secondary circuit by a regenerator.This system architecture is simple, and volume is little, handling safety.Row or purification function just fill for what realize sodium in sodium loop system in above two patents, and be simple in structure, can not carry out as liquid towards sodium metal thermal-hydraulic performance the loop of experimental study.
And for example, Chinese patent CN101807441A provides a kind of high-temperature sodium heat-convection test loop to comprise primary heat transport system, storage sodium tank, advance sodium row sodium system, blanketing gas purifies and vacuum system, sampling cabinet and temperature control system, it can discharge the higher sodium of impurity content in the loop, again can the higher new sodium of can purity; Not only keep the impermeability in loop but also make gas phase test space operating walk way unified unimpeded, can carry out simultaneously the corrosion test of sodium and sodium vapor; Sampling cabinet can be completed the loading or unloading operation of sample all the time and not be subjected to air pollution under argon shield atmosphere.But, this loop is mainly the corrosive property after impurity enters in order to test sodium and to move under hot environment, for flow, the physical quantitys such as pressure lack corresponding control and detection means, can't complete the analysis and research for the hot-working hydraulic characteristic of liquid metal sodium.
Summary of the invention
Therefore, the invention provides a kind of liquid sodium metal thermohydraulic experimental loop system, to make up the deficiency of above-mentioned technology, realize the experimental study of liquid towards sodium metal hot-working hydraulic characteristic.
This circuit system comprises the filling sodium system, loop body, vacuum system, five parts of argon system and glove box.Wherein fill with sodium system and mainly comprise molten sodium tank, sodium filtrator; The loop body mainly comprises storage sodium tank, pump box, master (auxiliary) electromagnetic pump, primary heater, test section, heating radiator, verification cylinder, cold-trap; Vacuum system mainly comprises vacuum pump and solenoid valve; Argon system mainly comprises argon bottle, argon gas filtrator; Glove box mainly comprises sodium sample examination device.Return all adopts 304 stainless steel pipes, and gas circuit is arranged 14 of vacuum diaphragm valves, wherein controls the argon gas trend for 6, and 3 is vent valve, controls vacuum loop for 1, and 3 is the tensimeter trimmer valve; The liquid metal sodium runner is arranged 13 sodium valves, two electromagnetic flowmeters.
The present invention specifically provides a kind of liquid sodium metal thermohydraulic experimental loop system, and this circuit system comprises fills with sodium system, loop body, vacuum system, argon system and glove box; Wherein fill with sodium system and comprise molten sodium tank, sodium filtrator; The loop body mainly comprises storage sodium tank, pump box, main electromagnetic pump, auxiliary electromagnetic pump, primary heater, test section, heating radiator, verification cylinder and cold-trap; Vacuum system comprises vacuum pump and solenoid valve; Argon system comprises argon bottle and argon gas filtrator; Glove box mainly comprises sodium sample examination device.
The molten sodium tank of described filling sodium system is connected with the sodium filtrator, connect storage sodium tank after filtrator, storage sodium tank is connected with pump box, pump box is connected with main electromagnetic pump, and pump box is connected with auxiliary electromagnetic pump, and major-minor electromagnetic pump is connected with primary heater, pump box and primary heater are connected to form the pump bypass, primary heater joint test section, test section is connected with heating radiator, and heating radiator is connected with pump box; Have branch road before primary heater and be connected with cold-trap, the cold-trap outlet is connected with pump box, and cold-trap row sodium mouth is connected with storage sodium tank; Before primary heater, another spending road is connected with the verification cylinder; Argon bottle is connected with the argon gas filtrator, and the argon gas filtrator is connected with molten sodium tank top, and molten sodium tank connects gas return path, glove box, verification cylinder, storage sodium tank and pump box; On storage sodium tank, vent valve is set, vent valve is set on pump box, vent valve is set on glove box, be connected with vacuum pump above the verification cylinder; Glove box is connected with the cold-trap outlet.
The molten sodium tank of described filling sodium system is connected with the sodium filtrator by the 13 sodium valves, connect storage sodium tank after filtrator, storage sodium tank is connected with pump box by the first sodium valves, pump box is connected with main electromagnetic pump by the second sodium valves, pump box is connected with auxiliary electromagnetic pump by the 4th sodium valves, major-minor electromagnetic pump is respectively by the 3rd sodium valves, the 5th sodium valves is connected with primary heater, pump box by the 6th sodium valves directly and primary heater be connected to form the pump bypass, primary heater is by the 7th sodium valves joint test section, test section is connected with heating radiator by the 8th sodium valves, and heating radiator is connected with pump box; Have branch road before primary heater and be connected with cold-trap by the tenth sodium valves, the cold-trap outlet is connected with pump box, and cold-trap row sodium mouth is connected with storage sodium tank by the 9th sodium valves; Before primary heater, another spending road is connected with the verification cylinder by the 11 sodium valves; Argon bottle is connected with the argon gas filtrator, the argon gas filtrator is connected with molten sodium tank top by the first air valve, molten sodium tank connects gas return path by the second air valve, after the second air valve, be connected with glove box by the 3rd air valve, be connected with the verification cylinder by the 4th air valve, be connected with storage sodium tank by the 5th air valve, be connected with pump box by the 6th air valve; Connect the 7th air valve as vent valve on storage sodium tank, connect the 8th air valve on pump box as vent valve, connect the 11 air valve on glove box as passing through the 9th air valve above vent valve verification cylinder, the tenth air valve is connected with vacuum pump; Glove box is connected with the cold-trap outlet by the 12 sodium valves.
Using method based on described liquid sodium metal thermohydraulic experimental loop system, should be first that sodium is filled in the loop by filling with sodium system before loop start, the sodium of buying injects molten sodium tank after fusing, open the 13 sodium valves, be that molten sodium tank pressurization is injected storage sodium tank with sodium through the sodium filtrator by gas circuit, then close the 13 sodium valves, complete the sodium process of filling;
Open the first air valve, the second air valve and the 5th air valve, by argon bottle, by the argon gas filtrator, molten sodium tank is the pressurization of storage sodium tank, opening simultaneously the 8th air valve is the pump box decompression, keeps pressure reduction between storage sodium tank and pump box, opens the first sodium valves, liquid metal sodium in storage sodium tank is depressed in pump box, completes and close the first sodium valves after pressing sodium;
Open the second sodium valves or the 4th sodium valves, the 3rd sodium valves or the 5th sodium valves, the 11 sodium valves, close other sodium valves of closed loop, start main electromagnetic pump or auxiliary electromagnetic pump, liquid metal sodium is delivered to the verification cylinder, close electromagnetic pump and above each sodium valves when the sodium liquid level reaches the requirement height;
Open the 4th air valve, keep verification cylinder pressure by argon pressurization; Open the 8th air valve, keep pump box pressure by exhaust; Open successively electromagnetic pump bypass the 6th sodium valves, verification cylinder entrance the 11 sodium valves, this moment, liquid metal sodium entered pump box by the verification cylinder through electromagnetic flowmeter and electromagnetic pump bypass under pressure differential; Compare by liquid level decline rate in the verification cylinder and electromagnetic flowmeter reading, can complete the staking-out work to electromagnetic flowmeter.
Using method based on described liquid sodium metal thermohydraulic experimental loop system, should be first that sodium is filled in the loop by filling with sodium system before loop start, the sodium of buying injects molten sodium tank after fusing, open the 13 sodium valves, be that molten sodium tank pressurization is injected storage sodium tank with sodium through the sodium filtrator by gas circuit, then close the 13 sodium valves, complete the sodium process of filling;
Open the first air valve, the second air valve and the 5th air valve, by argon bottle, by the argon gas filtrator, molten sodium tank is the pressurization of storage sodium tank, opening simultaneously the 8th air valve is the pump box decompression, keeps pressure reduction between storage sodium tank and pump box, opens the first sodium valves, liquid metal sodium in storage sodium tank is depressed in pump box, completes and close the first sodium valves after pressing sodium;
Before on-test, open each air valve, open the second sodium valves or the 4th sodium valves, the 3rd sodium valves or the 5th sodium valves, the 7th sodium valves, the 8th sodium valves, the tenth sodium valves, the aperture of control the 6th sodium valves, confirm the first sodium valves, the 9th sodium valves, the 11 sodium valves is closed, and starts main electromagnetic pump or auxiliary electromagnetic pump.At this moment, liquid metal sodium under main electromagnetic pump or auxiliary electromagnetic pump drive, by pump box through main electromagnetic pump or auxiliary electromagnetic pump, electromagnetic flowmeter, primary heater, test section, heating radiator is got back to pump box, completes circulation.Simultaneously, according to the aperture of the 6th sodium valves, part sodium is arranged through the electromagnetic pump bypass at the 6th sodium valves place, thus sodium flow in control loop; Also have part sodium then to conflux to heating radiator with major loop sodium through electromagnetic flowmeter, the tenth sodium valves and cold-trap, play the in-line purification effect to liquid metal sodium in the loop.
This main function of system is as follows:
1, can by filling with sodium system with the sodium injection of technical grade, enter after filtering storage sodium tank;
2, test the time provides pressure differential that liquid metal sodium is depressed in pump box by argon gas, and then electromagnetic pump provides power to order about sodium to move in the loop, realize the analysis of liquid towards sodium metal heat exchange flow characteristics by installing different tests section and data acquisition system (DAS) additional;
3, the cold-trap branch road can provide the liquid metal sodium in-line purification, keeps liquid metal sodium purity;
4, the verification cylinder can be realized the demarcation to electromagnetic flowmeter;
5, glove box can be realized sample analysis and the detection to liquid metal sodium in the loop.
Ruuning situation after building up by circuit system proves, above various functions can well be completed in the loop, can realize that the liquid metal sodium hot-working hydraulic characteristic analyzes experimental study.
Description of drawings
Fig. 1 is general structure schematic diagram of the present invention;
Wherein: 1 is argon bottle; 2 is the argon gas filtrator; 3 are molten sodium tank; 4 is the sodium filtrator; 5 are storage sodium tank; 6 is pump box; 7 is cold-trap; 8 are the verification cylinder; 9 is test section; 10 is main electromagnetic pump; 11 is auxiliary electromagnetic pump; 12 is primary heater; 13 is heating radiator; 14 is glove box; 15 is vacuum pump; 1-1 is the first air valve; 1-2 is the second air valve; 1-3 is the 3rd air valve; 1-4 is the 4th air valve; 1-5 is the 5th air valve; 1-6 is the 6th air valve; 1-7 is the 7th air valve; 1-8 is the 8th air valve; 1-9 is the 9th air valve; 1-10 is the tenth air valve; 1-11 is the 11 air valve; 1-12 is the 12 air valve; 2-1 is the first sodium valves; 2-2 is the second sodium valves; 2-3 is the 3rd sodium valves; 2-4 is the 4th sodium valves; 2-5 is the 5th sodium valves; 2-6 is the 6th sodium valves; 2-7 is the 7th sodium valves; 2-8 is the 8th sodium valves; 2-9 is the 9th sodium valves; 2-10 is the tenth sodium valves; 2-11 is the 11 sodium valves; 2-12 is the 12 sodium valves; 2-13 is the 13 sodium valves; 3-1 is the first electromagnetic flowmeter; 3-2 is the second electromagnetic flowmeter.
Embodiment
Below in conjunction with accompanying drawing, structural principle of the present invention and principle of work are elaborated.
filling with the molten sodium tank 3 of sodium system is connected with sodium filtrator 4 by the 13 sodium valves 2-13, connect storage sodium tank 5 after filtrator 4, storage sodium tank 5 is connected with pump box 6 by the first sodium valves 2-1, pump box 6 is connected with main electromagnetic pump 10 by the second sodium valves 2-2, pump box 6 is connected with auxiliary electromagnetic pump by the 4th sodium valves 2-4, major-minor electromagnetic pump is respectively by the 3rd sodium valves 2-3, the 5th sodium valves 2-5 is connected with primary heater 12, pump box 6 by the 6th sodium valves 2-6 directly and primary heater be connected to form the pump bypass, primary heater 12 is by the 7th sodium valves 2-7 joint test section 9, test section 9 is connected with heating radiator 13 by the 8th sodium valves 2-8, heating radiator 13 is connected with pump box.Have branch road before primary heater 12 and be connected with cold-trap 7 by the tenth sodium valves 2-10, cold-trap 7 outlets are connected with pump box 6, and cold-trap 7 row's sodium mouths are connected with storage sodium tank 5 by the 9th sodium valves 2-9.The front another spending of primary heater 12 road is connected with verification cylinder 8 by the 11 sodium valves 2-11.Argon bottle 1 is connected with argon gas filtrator 2, argon gas filtrator 2 is connected with molten sodium tank 3 tops by the first air valve 1-1, molten sodium tank 3 connects gas return path by the second air valve 1-2, after the second air valve 1-2, be connected with glove box 14 by the 3rd air valve 1-3, be connected with verification cylinder 8 by the 4th air valve 1-4, be connected with storage sodium tank by the 5th air valve 1-5, be connected with pump box by the 6th air valve 1-6.Meet the 7th air valve 1-7 as vent valve on storage sodium tank 5, meet the 8th air valve 1-8 on pump box 6 as vent valve, meet the 11 air valve 1-11 on glove box 14 as passing through the 9th air valve 1-9 above vent valve verification cylinder, the tenth air valve 1-10 is connected with vacuum pump 15.Glove box 14 is connected with the cold-trap outlet by the 12 sodium valves 2-12.
Three embodiment of the present invention are introduced in conjunction with Fig. 1 in this part, are respectively the demarcation of electromagnetic flowmeter, the sample analysis of the test of liquid metal sodium hot-working hydraulic characteristic and liquid metal sodium.
In conjunction with Fig. 1, introduce first embodiment of the present invention, the demarcation of electromagnetic flowmeter.
By shown in Figure 1, should be first that sodium is filled in the loop by filling with sodium system before loop start, the sodium of buying injects molten sodium tank 3 after fusing, open the 13 sodium valves 2-13, be that molten sodium tank 3 pressurizations are injected storage sodium tank 5 with sodium through sodium filtrator 4 by gas circuit, then close the 13 sodium valves 2-13, complete the sodium process of filling.
Open the first air valve 1-1, the second air valve 1-2, the 5th air valve 1-5 is by argon bottle 1, by argon gas filtrator 2, molten sodium tank 3 is 5 pressurizations of storage sodium tank, opening simultaneously the 8th air valve 1-8 is pump box 6 decompressions, keeps pressure reduction between storage sodium tank 5 and pump box 6, opens the first sodium valves 2-1, liquid metal sodium in storage sodium tank 5 is depressed in pump box 6, completes and close the first sodium valves 2-1 after pressing sodium.
Open the second sodium valves 2-2 (or the 4th sodium valves 2-4), the 3rd sodium valves 2-3 (or the 5th sodium valves 2-5), the 11 sodium valves 2-11, close other sodium valves of closed loop, start main (auxiliary) electromagnetic pump 10 (11), liquid metal sodium is delivered to verification cylinder 8, closes electromagnetic pump and above each sodium valves when the sodium liquid level reaches the requirement height.
Open the 4th air valve 1-4, keep verification cylinder 8 pressure by argon pressurization; Open the 8th air valve 1-8, keep pump box 6 pressure by exhaust.Open successively electromagnetic pump bypass the 6th sodium valves 2-6, verification cylinder entrance the 11 sodium valves 2-11, this moment, liquid metal sodium entered pump box 6 by verification cylinder 8 through electromagnetic flowmeter 3-2 and electromagnetic pump bypass under pressure differential.Compare by liquid level decline rate in the verification cylinder and electromagnetic flowmeter reading, can complete the staking-out work to electromagnetic flowmeter 3-2.
In conjunction with Fig. 1, introduce second embodiment of the present invention, the test of liquid metal sodium hot-working hydraulic characteristic.
This embodiment fills sodium and presses the sodium process with embodiment one.
Before on-test, open each air valve, open the second sodium valves 2-2 (or the 4th sodium valves 2-4), the 3rd sodium valves 2-3 (or the 5th sodium valves 2-5), the 7th sodium valves 2-7, the 8th sodium valves 2-8, the tenth sodium valves 2-10, the aperture of control the 6th sodium valves 2-6, confirm the first sodium valves 2-1, the 9th sodium valves 2-9, the 11 sodium valves 2-11 closes, and starts electromagnetic pump 10 (11).At this moment, liquid metal sodium is being led under (auxiliary) electromagnetic pump 10 (11) drives, by pump box 6 through electromagnetic pump 10 (11), electromagnetic flowmeter 3-2, primary heater 12, test section 9, heating radiator 13 is got back to pump box 6, completes circulation.Simultaneously, according to the aperture of the 6th sodium valves 2-6, part sodium is arranged through the electromagnetic pump bypass at the 6th sodium valves 2-6 place, thus sodium flow in control loop.Also have part sodium through electromagnetic flowmeter 3-1, the tenth sodium valves 2-10, then cold-trap 7 confluxes to heating radiator with major loop sodium, plays the in-line purification effect to liquid metal sodium in the loop.
More than be native system and carry out the liquid metal sodium hot-working hydraulic characteristic flow process in when test.By to the loop flow, the control of pressure can obtain the experiment condition that needs, by installing data acquisition system (DAS) additional for test section 9, can obtain the hot-working hydraulic characteristic parameter of liquid metal sodium, for the research of liquid metal sodium hot-working hydraulic characteristic provides reliable experimental data.
In conjunction with Fig. 1, introduce the 3rd embodiment of the present invention, the sample analysis of liquid metal sodium.
This embodiment is before liquid metal sodium hot-working hydraulic characteristic test is carried out in the loop or carry out in experimentation, thus this step and embodiment two similar.Difference is need to be in the operational process of loop, needs to control the 3rd air valve 1-3, and the 11 air valve 1-11 is that glove box 14 is regulated pressure, opens pressure differential that the 12 sodium valves 2-12 utilizes glove box and major loop and gets sodium from major loop and advance glove box 14.Glove box is hermetically sealed and use the argon gas covering protection, and it is accurate to guarantee when sodium is tested.
Use and move proof through system circuit, the demarcation of electromagnetic flowmeter can be completed fully in this loop, the functions such as sample analysis of the test of liquid metal sodium hot-working hydraulic characteristic and liquid metal sodium can provide for the research of liquid metal sodium hot-working hydraulic characteristic scientific and reasonable experimental data.
Above content is in conjunction with concrete preferred implementation further description made for the present invention; can not assert that the specific embodiment of the present invention only limits to this; for the general technical staff of the technical field of the invention; without departing from the inventive concept of the premise; can also make some simple deduction or replace, all should be considered as belonging to the present invention and determine scope of patent protection by claims of submitting to.
Claims (4)
1. liquid sodium metal thermohydraulic experimental loop system is characterized in that: this circuit system comprises fills with sodium system, loop body, vacuum system, argon system and glove box; Wherein fill with sodium system and comprise molten sodium tank, sodium filtrator; The loop body mainly comprises storage sodium tank, pump box, main electromagnetic pump, auxiliary electromagnetic pump, primary heater, test section, heating radiator, verification cylinder and cold-trap; Vacuum system comprises vacuum pump and solenoid valve; Argon system comprises argon bottle and argon gas filtrator; Glove box mainly comprises sodium sample examination device; The molten sodium tank of described filling sodium system is connected with the sodium filtrator, connect storage sodium tank after filtrator, storage sodium tank is connected with pump box, pump box is connected with main electromagnetic pump, and pump box is connected with auxiliary electromagnetic pump, and major-minor electromagnetic pump is connected with primary heater, pump box and primary heater are connected to form the pump bypass, primary heater joint test section, test section is connected with heating radiator, and heating radiator is connected with pump box; Have branch road before primary heater and be connected with cold-trap, the cold-trap outlet is connected with pump box, and cold-trap row sodium mouth is connected with storage sodium tank; Before primary heater, another spending road is connected with the verification cylinder; Argon bottle is connected with the argon gas filtrator, and the argon gas filtrator is connected with molten sodium tank top, and molten sodium tank connects gas return path, glove box, verification cylinder, storage sodium tank and pump box; On storage sodium tank, vent valve is set, vent valve is set on pump box, vent valve is set on glove box, be connected with vacuum pump above the verification cylinder; Glove box is connected with the cold-trap outlet.
2. liquid sodium metal thermohydraulic experimental loop system as claimed in claim 1, it is characterized in that: the molten sodium tank of described filling sodium system is connected with the sodium filtrator by the 13 sodium valves, connect storage sodium tank after filtrator, storage sodium tank is connected with pump box by the first sodium valves, pump box is connected with main electromagnetic pump by the second sodium valves, pump box is connected with auxiliary electromagnetic pump by the 4th sodium valves, major-minor electromagnetic pump is respectively by the 3rd sodium valves, the 5th sodium valves is connected with primary heater, pump box by the 6th sodium valves directly and primary heater be connected to form the pump bypass, primary heater is by the 7th sodium valves joint test section, test section is connected with heating radiator by the 8th sodium valves, heating radiator is connected with pump box, have branch road before primary heater and be connected with cold-trap by the tenth sodium valves, the cold-trap outlet is connected with pump box, and cold-trap row sodium mouth is connected with storage sodium tank by the 9th sodium valves, before primary heater, another spending road is connected with the verification cylinder by the 11 sodium valves, argon bottle is connected with the argon gas filtrator, the argon gas filtrator is connected with molten sodium tank top by the first air valve, molten sodium tank connects gas return path by the second air valve, after the second air valve, be connected with glove box by the 3rd air valve, be connected with the verification cylinder by the 4th air valve, be connected with storage sodium tank by the 5th air valve, be connected with pump box by the 6th air valve, connect the 7th air valve as vent valve on storage sodium tank, connect the 8th air valve on pump box as vent valve, connect the 11 air valve on glove box as vent valve, above the verification cylinder, by the 9th air valve, the tenth air valve is connected with vacuum pump, glove box is connected with the cold-trap outlet by the 12 sodium valves.
3. based on the using method of the described liquid sodium metal thermohydraulic experimental loop system of claim 2, it is characterized in that:
Should be first that sodium is filled in the loop by filling with sodium system before loop start, the sodium of purchase injects molten sodium tank after fusing, open the 13 sodium valves, is that molten sodium tank pressurization is injected storage sodium tank with sodium through the sodium filtrator by gas circuit, then closes the 13 sodium valves, completes the sodium process of filling;
Open the first air valve, the second air valve and the 5th air valve, by argon bottle, by the argon gas filtrator, molten sodium tank is the pressurization of storage sodium tank, opening simultaneously the 8th air valve is the pump box decompression, keeps pressure reduction between storage sodium tank and pump box, opens the first sodium valves, liquid metal sodium in storage sodium tank is depressed in pump box, completes and close the first sodium valves after pressing sodium;
Open the second sodium valves or the 4th sodium valves, the 3rd sodium valves or the 5th sodium valves, the 11 sodium valves, close other sodium valves of closed loop, start main electromagnetic pump or auxiliary electromagnetic pump, liquid metal sodium is delivered to the verification cylinder, close electromagnetic pump and above each sodium valves when the sodium liquid level reaches the requirement height;
Open the 4th air valve, keep verification cylinder pressure by argon pressurization; Open the 8th air valve, keep pump box pressure by exhaust; Open successively electromagnetic pump bypass the 6th sodium valves, verification cylinder entrance the 11 sodium valves, this moment, liquid metal sodium entered pump box by the verification cylinder through electromagnetic flowmeter and electromagnetic pump bypass under pressure differential; Compare by liquid level decline rate in the verification cylinder and electromagnetic flowmeter reading, can complete the staking-out work to electromagnetic flowmeter.
4. based on the using method of the described liquid sodium metal thermohydraulic experimental loop system of claim 2, it is characterized in that:
Should be first that sodium is filled in the loop by filling with sodium system before loop start, the sodium of purchase injects molten sodium tank after fusing, open the 13 sodium valves, is that molten sodium tank pressurization is injected storage sodium tank with sodium through the sodium filtrator by gas circuit, then closes the 13 sodium valves, completes the sodium process of filling;
Open the first air valve, the second air valve and the 5th air valve, by argon bottle, by the argon gas filtrator, molten sodium tank is the pressurization of storage sodium tank, opening simultaneously the 8th air valve is the pump box decompression, keeps pressure reduction between storage sodium tank and pump box, opens the first sodium valves, liquid metal sodium in storage sodium tank is depressed in pump box, completes and close the first sodium valves after pressing sodium;
before on-test, open each air valve, open the second sodium valves or the 4th sodium valves, the 3rd sodium valves or the 5th sodium valves, the 7th sodium valves, the 8th sodium valves, the tenth sodium valves, control the aperture of the 6th sodium valves, confirm the first sodium valves, the 9th sodium valves, the 11 sodium valves is closed, start main electromagnetic pump or auxiliary electromagnetic pump, at this moment, liquid metal sodium is under main electromagnetic pump or the driving of auxiliary electromagnetic pump, by pump box through main electromagnetic pump or auxiliary electromagnetic pump, electromagnetic flowmeter, primary heater, test section, heating radiator is got back to pump box, complete circulation, simultaneously, aperture according to the 6th sodium valves, part sodium is arranged through the electromagnetic pump bypass at the 6th sodium valves place, sodium flow in control loop thus, also have part sodium then to conflux to heating radiator with major loop sodium through electromagnetic flowmeter, the tenth sodium valves and cold-trap, play the in-line purification effect to liquid metal sodium in the loop.
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