CN102606882B - Double-heat-sink closed liquid nitrogen transporting system and working method thereof - Google Patents

Double-heat-sink closed liquid nitrogen transporting system and working method thereof Download PDF

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CN102606882B
CN102606882B CN 201210057530 CN201210057530A CN102606882B CN 102606882 B CN102606882 B CN 102606882B CN 201210057530 CN201210057530 CN 201210057530 CN 201210057530 A CN201210057530 A CN 201210057530A CN 102606882 B CN102606882 B CN 102606882B
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stop valve
liquid nitrogen
heat sink
hand stop
valve
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CN102606882A (en
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凌桂龙
蔡国飙
张建华
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Beihang University
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Beihang University
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Abstract

The invention discloses a double-heat-sink closed liquid nitrogen transporting system and a working method of the double-heat-sink closed liquid nitrogen transporting system. The system comprises a heat sink system, a liquid nitrogen supplying system, a subcooler system, a liquid nitrogen pump system, a heat sink inlet pipeline system, and a heat sink outlet pipeline system, wherein the liquid nitrogen supplying system stores liquid nitrogen and supplies the liquid nitrogen to the heat sink system, the heat sink inlet pipeline system transports the liquid nitrogen to the heat sink system, theheat sink outlet pipeline system recovers redundant liquid nitrogen flowing through the heat sink system to the liquid nitrogen supplying system by the heat sink outlet pipeline system, the subcoolersystem refrigerates and cools liquid nitrogen transported by each liquid nitrogen heat sink, so that gaseous nitrogen contained in the liquid nitrogen transported by the heat sink is liquefied, the liquid nitrogen pump system transports cooled liquid nitrogen to the heat sink inlet pipeline system, so as to realize closed circulation refrigeration of the heat sink system, and the liquid nitrogen cooled by the subcooler system is transported to the heat sink inlet pipeline system and then enters each liquid nitrogen heat sink. The system and the working method of the invention can simultaneously meet the requirements of both satellite thermovacuum tests and engine plum tests.

Description

A kind of two heat sink enclosed liquid nitrogen induction system and method for work thereof
Technical field
The invention belongs to the vacuum science technical field, the present invention relates to a kind ofly for double-deck heat sink device provides the liquid nitrogen induction system of liquid nitrogen refrigerating, specifically refer to two heat sink enclosed liquid nitrogen induction system and method for work thereof that satellite thermal vacuum test and engine plume testing are taken into account simultaneously.
Background technology
Vacuum plume effect test system (multi-functional plume testing platform) is the multi-usage test unit, is mainly used in space flight appearance, control thruster plume experimental study, takes into account thermal vacuum tests such as satellite simultaneously.Because the test that the plume testing platform can carry out is of a great variety, need be furnished with the low temperature liquid nitrogen induction system that parts are numerous, pipeline is complicated in the test.
The effect of low temperature liquid nitrogen induction system mainly is that the heat sink liquid nitrogen refrigerating that provides in the cabin is provided, make heat sink temperature be lower than 100K and keep heat sink temperature even, be used for gas in the absorption cabin, keep vacuum tightness and low temperature environment in the cabin, be used for space cryogenic vacuum environment that is virtually reality like reality.
At present, domestic also do not have to carry out the large-scale vacuum environmental-test facility that satellite thermal vacuum test can carry out the engine plume testing again, and traditional low temperature liquid nitrogen induction system can only provide the simple low temperature liquid nitrogen refrigerating for the individual layer heat sink device, can't realize the liquid nitrogen refrigerating of complicated double-deck heat sink device simultaneously.
Summary of the invention
In order to address the above problem, the present invention proposes a kind of a kind of two heat sink enclosed liquid nitrogen induction systems of taking into account satellite thermal vacuum test and engine plume testing simultaneously, comprises heat-sink system (100), liquid nitrogen supply system (200), subcooler system (300), liquid nitrogen pump system (400), heat sink entrance pipe system (500), heat sink export pipeline system (600).
Heat-sink system (100) comprises gate liquid helium heat sink (101), cabin body anterior liquid helium heat sink (102), body rear portion, cabin liquid helium heat sink (103), the end socket liquid helium is heat sink (104), plume adsorption pump (105), gate liquid nitrogen heat sink (106), the anterior liquid nitrogen heat sink (107) of cabin body, body rear portion, cabin liquid nitrogen heat sink (108), end socket liquid nitrogen heat sink (109); Gate liquid nitrogen heat sink (106), the gate liquid helium is heat sink (101), the anterior liquid nitrogen heat sink (107) of cabin body, body rear portion, cabin liquid nitrogen heat sink (108) arrange successively from front to back with end socket liquid helium heat sink (104), end socket liquid nitrogen heat sink (109); The anterior liquid helium heat sink (102) of cabin body, body rear portion, cabin liquid helium heat sink (103) are arranged on the anterior liquid nitrogen heat sink (107) of cabin body, body rear portion, cabin liquid nitrogen heat sink (108) inside; Plume adsorption pump (105) is arranged on body rear portion, cabin liquid helium heat sink (103) inside, is used for adsorbing plume gas.
Liquid nitrogen supply system (200) comprises liquid nitrogen storage (233) and pneumatic stopping valve (211), first hand stop valve (212), second hand stop valve (219), the 3rd hand stop valve (216), the 4th hand stop valve (218), the 5th hand stop valve (223), the 6th hand stop valve (224), the 7th hand stop valve (225), the 8th hand stop valve (226), the 9th hand stop valve (228), first remote pressure gauge (213), second remote pressure gauge (231), primary scene tensimeter (215), secondary scene tensimeter (232), low-temperature solenoid valve (217), first liquid level gauge (214), the first low-temperature safety valve (229), the second low-temperature safety valve (230), carburetor (220), liquid nitrogen storage vent valve (236); Wherein, by the interior liquid nitrogen filling of the 9th hand stop valve (228) control liquid nitrogen storage (233); Carburetor (220) entrance is communicated with liquid nitrogen storage (233) bottom by second hand stop valve (219), and outlet is communicated with liquid nitrogen storage (233) top by pipeline, and low-temperature solenoid valve (217) is in parallel with second hand stop valve (219) by pipeline; First remote pressure gauge (213) and primary scene tensimeter (215) are installed on the liquid nitrogen storage (233); First liquid level gauge (214) also is installed on the liquid nitrogen storage (233); Liquid nitrogen storage (233) is connected with the 5th hand stop valve (223) by pipeline; The 5th hand stop valve (223) connects the first low-temperature safety valve (229), the 6th hand stop valve (224), the 7th hand stop valve (225), the second low-temperature safety valve (230) successively by pipeline, finally links to each other with heat sink entrance pipe system (500); The 7th hand stop valve (225) links to each other with second remote pressure gauge (231), secondary scene tensimeter (232) by triplate line; The pipeline its lowest position is equipped with the 8th hand stop valve (226) in the liquid nitrogen supply system (200); Liquid nitrogen storage (233) links to each other with pneumatic stopping valve (211) by pipeline; Liquid nitrogen storage vent valve (236) also is installed on the liquid nitrogen storage (233).
Heat sink entrance pipe system (500) comprises the tenth hand stop valve (501), the 11 manual stop valve (502), the 12 manual stop valve (505), the 13 hand stop valve (506), the 14 hand stop valve (508), the 15 hand stop valve (509), the 16 hand stop valve (514), the 17 hand stop valve (515), the 18 hand stop valve (516), the 19 hand stop valve (517), the 3rd low-temperature safety valve (503), the 4th low-temperature safety valve (507), first pneumatic control valve (504), second pneumatic control valve (510), the 3rd pneumatic control valve (511), the 4th pneumatic control valve (512), the 5th pneumatic control valve (513); Wherein, first pneumatic control valve (504) is connected to gate liquid helium heat sink (101) entrance by pipeline; Second pneumatic control valve (510) is connected to anterior liquid helium heat sink (102) entrance of cabin body by pipeline; The 3rd pneumatic control valve (511) is connected to body rear portion, cabin liquid helium heat sink (103) entrance by pipeline; The 4th pneumatic control valve (512) is connected to end socket liquid helium heat sink (104) entrance by pipeline; The 5th pneumatic control valve (513) is connected to plume adsorption pump (105) entrance by pipeline; The 16 hand stop valve (514) is connected to gate liquid nitrogen heat sink (106) entrance by pipeline; The 17 hand stop valve (515) place branch road is connected to anterior liquid nitrogen heat sink (107) entrance of cabin body; The 18 hand stop valve (516) is connected to body rear portion, cabin liquid nitrogen heat sink (108) entrance by pipeline; The 19 hand stop valve (517) is connected to end socket liquid nitrogen heat sink (109) entrance by pipeline; The tenth hand stop valve (501) is the overhead control valve of the heat sink and plume adsorption pump of each liquid helium, manually controls liquid nitrogen by the tenth hand stop valve (501) and carries; The tenth hand stop valve (501) one ends link to each other with liquid nitrogen transfer pipeline in the liquid nitrogen supply system (200), and the other end connects three branch roads at the 11 manual stop valve (502), the 3rd pneumatic control valve (504), the 12 manual stop valve (505) place respectively; Wherein, the 11 manual stop valve (502) is by four branch road entrance UNICOMs at pipeline and second pneumatic control valve (510), the 3rd pneumatic control valve (511), the 4th pneumatic control valve (512), the 5th pneumatic control valve (513) place, the overhead control valve of carrying as four branch road liquid nitrogen; The 12 manual stop valve (505) links to each other with the 16 hand stop valve (514), the 17 hand stop valve (515), the 18 hand stop valve (516), the 19 hand stop valve (517) by gate liquid nitrogen heat sink (106) entrance pipe, anterior liquid nitrogen heat sink (107) entrance pipe of cabin body, body rear portion, cabin liquid nitrogen heat sink (108) entrance pipe and end socket liquid nitrogen heat sink (109) entrance pipe respectively, thus heat sink (101) entrance of gate liquid helium and each liquid nitrogen heat sink entrance is passed through pipeline UNICOM; The 13 hand stop valve (506) by pipeline with anterior liquid nitrogen heat sink 107 entrance pipes of cabin body, body rear portion, cabin liquid nitrogen heat sink 108, the end socket liquid helium is heat sink 104 entrance pipes and gate liquid nitrogen heat sink (106) entrance pipe, cabin body front portion liquid nitrogen heat sink (107) entrance pipe, body rear portion, cabin liquid nitrogen heat sink (108) entrance pipe, end socket liquid nitrogen heat sink (109) entrance pipe UNICOM; The 14 hand stop valve (508) links to each other by the entrance pipe that the blowing pipeline is connected to second pneumatic control valve (510), the 3rd pneumatic control valve (511), the 4th pneumatic control valve (512), the 5th pneumatic control valve (513); The 15 hand stop valve (509) one ends are connected to the entrance pipe of second pneumatic control valve (510), the 3rd pneumatic control valve (511), the 4th pneumatic control valve (512), the 5th pneumatic control valve (513) by pipeline, and the other end is connected directly to atmosphere by pipeline; The 3rd low-temperature safety valve (503) is installed on gate liquid helium heat sink (101) entrance pipe, and the 4th low-temperature safety valve (507) is installed in and blows down on the pipeline.
Heat sink export pipeline system (600) comprises the 20 hand stop valve (602), the 21 manual stop valve (606), the 22 manual stop valve (613), the 23 hand stop valve (614), the 24 hand stop valve (615), the 25 hand stop valve (618), the 26 hand stop valve (621), the 27 hand stop valve (622), the 28 hand stop valve (623), the 30 hand stop valve (625), the 30 hand stop valve (626), the 31 manual stop valve (628), the 32 manual stop valve (630), first low-reading thermometer (601), second low-reading thermometer (607), the 3rd low-reading thermometer (608), the 4th low-reading thermometer (609), the 5th low-reading thermometer (610), the 6th low-reading thermometer (611), the 7th low-reading thermometer (612), the 8th low-reading thermometer (632), the 5th low-temperature safety valve (605), the 6th low-temperature safety valve (616), the 7th low-temperature safety valve (617), the 8th low-temperature safety valve (624), the 9th low-temperature safety valve (627), the tenth low-temperature safety valve (629), the 11 low-temperature safety valve (631), the 3rd remote pressure gauge (603), the 4th remote pressure gauge (619), the 3rd on-the-spot tensimeter (604), the 4th on-the-spot tensimeter (620) and the 6th pneumatic control valve (633); Wherein, the 21 manual stop valve (606) one ends are by the straight-through atmosphere of pipeline, the other end connects the 5th low-temperature safety valve (605), the 20 hand stop valve (602), the 3rd remote pressure gauge (603) to gate liquid helium heat sink (101) outlet in turn by pipeline, forms gate liquid helium heat sink (101) outlet discharge pipe; The 20 hand stop valve (602) also links to each other with the 3rd on-the-spot tensimeter (604), first low-reading thermometer (601); The 26 hand stop valve (621) one ends are by the straight-through atmosphere of pipeline, after the other end connects the 25 hand stop valve (618), the 7th low-temperature safety valve (617) in turn by pipeline, be connected with six road pipelines respectively, the first via is connected to the anterior liquid helium of cabin body heat sink (102) outlet by second low-reading thermometer (607); The second the tunnel is connected to body rear portion, cabin liquid helium heat sink 103 by the 3rd low-reading thermometer (608) exports; Third Road is connected to end socket liquid helium heat sink (104) outlet by the 4th low-reading thermometer (609); The four the tunnel is connected to plume adsorption pump 105 big tubes by the 22 manual stop valve (613), the 5th low-reading thermometer (610) exports; The five the tunnel is connected to the middle tube of plume adsorption pump (105) by the 23 hand stop valve (614), the 6th low-reading thermometer (611) exports; LIULUTONG is crossed the 24 hand stop valve (615), the 7th low-reading thermometer (612) is connected to the little tube outlet of plume adsorption pump (105); Described 25 hand stop valves (618) link to each other with the 4th remote pressure gauge (619), the 4th on-the-spot tensimeter (620); The 6th pneumatic control valve (633) one ends are by the straight-through atmosphere of pipeline, the other end is connected with four road pipelines respectively after connecting the 8th low-reading thermometer (632), the 11 low-temperature safety valve (631), the 32 manual stop valve (630), the tenth low-temperature safety valve (629), the 31 manual stop valve (628), the 9th low-temperature safety valve (627) in turn by pipeline, and four road pipelines are connected to gate liquid nitrogen heat sink (106), the anterior liquid nitrogen heat sink (107) of cabin body, body rear portion, cabin liquid nitrogen heat sink (108), end socket liquid nitrogen heat sink (109) respectively; Outlet discharge pipe by the 27 hand stop valve (622) that the discharge pipe of the outlet of gate liquid helium heat sink (101) is heat sink with all the other liquid heliums and plume adsorption pump (105) is communicated with; By the 28 hand stop valve (623), the 8th low-temperature safety valve (624), the 30 hand stop valve (626) is heat sink with each liquid helium, the outlet discharge pipe of plume adsorption pump and each liquid nitrogen heat sink is communicated with the formation pipe network system, concrete connected mode is: the 28 hand stop valve (623) one ends are communicated with plume adsorption pump (105) outlet discharge pipe by pipeline, the other end connects the 8th low-temperature safety valve (624) in turn by pipeline, the 30 hand stop valve (626) is connected between the 31 manual stop valve (628) and the tenth low-temperature safety valve (629) on the pipeline, the 28 hand stop valve (623), require to close simultaneously or open simultaneously during the 30 hand stop valve (626) operation.The 8th low-temperature safety valve (624) is installed on the pipeline between the 28 hand stop valve (623) and the 30 hand stop valve (626); The 29 hand stop valve (625) one ends are connected between the 28 hand stop valve (623) and the 30 hand stop valve (626), and the other end leads directly to atmosphere; Pipeline between the 6th pneumatic control valve (633) and the 11 low-temperature safety valve (631) links to each other with the pneumatic stopping valve (201) in the liquid nitrogen supply system (200).The 6th low-temperature safety valve 616 is installed on the 21 manual stop valve 615 entrance pipes.
Subcooler system (300) is used for the liquid nitrogen refrigerating cooling that each liquid nitrogen heat sink of subtend is carried, make the gas nitrogen liquefaction that contains in the liquid nitrogen of carrying, comprise subcooler (316) and the 33 hand stop valve (301), the 34 hand stop valve (302), the 35 hand stop valve (305), the 36 hand stop valve (311), the 37 hand stop valve (312), the 38 hand stop valve (314), the 39 hand stop valve (315), the 9th low-reading thermometer (303), the tenth low-reading thermometer (313), the 7th pneumatic control valve (304), the 5th remote pressure gauge (306), the 6th remote pressure gauge (308), the 5th on-the-spot tensimeter (307), the 6th on-the-spot tensimeter (309) and second liquid level gauge (310); Wherein, the 33 hand stop valve (301) is feed liquor and the make-up valve of subcooler system (300), liquid nitrogen transfer pipeline in one end and the liquid nitrogen supply system (200) between the first low-temperature safety valve (229), the 7th hand stop valve (224) is communicated with, and the other end is communicated with by the supercooling tube road liquid feeding end in pipeline and subcooler (316) main body; The 9th low-reading thermometer (303) is arranged on porch, supercooling tube road; The 7th pneumatic control valve (304) one ends are communicated with liquid nitrogen transfer pipeline between the 7th hand stop valve (224) by the first low-temperature safety valve (229) in pipeline and the liquid nitrogen supply system (200); Second liquid level gauge (310) is installed on the subcooler (316); The 5th remote pressure gauge (306) is connected to exit, supercooling tube road with the 5th on-the-spot tensimeter (307) by the 35 hand stop valve (305); In subcooler (316) main body the 36 hand stop valve (311) is installed; On subcooler (316) main body, the 37 hand stop valve (312) is installed also; The 39 hand stop valve (315) is connected to exit, supercooling tube road by pipeline, and the 39 hand stop valve (315) also is connected in liquid nitrogen pump system (400) and the heat sink export pipeline system (600) between the 11 low-temperature safety valve (631) and the 32 manual stop valve (630) on the pipeline by pipeline; The 38 hand stop valve (314) one ends are connected on the 37 hand stop valve (312) and the intersubjective pipeline of subcooler (316) by pipeline, and the other end is connected on the pipeline between the 39 hand stop valve (315) and the heat sink export pipeline system 600; The tenth low-reading thermometer (313) is arranged on exit, supercooling tube road; The 34 hand stop valve (302) one ends are communicated with porch, supercooling tube road by pipeline, and the other end is connected in the heat sink export pipeline system (600) on the pipeline between the 32 manual stop valve (630) and the tenth low-temperature safety valve (629) by pipeline.
Liquid nitrogen pump system (400) comprises fine filter (401), liquid nitrogen pump (407), the 40 hand stop valve (403), the 41 manual stop valve (406), the 42 manual stop valve (408), the 43 hand stop valve (409), the 44 hand stop valve (410), the 45 hand stop valve (413), the 12 low-temperature safety valve (402), the 13 low-temperature safety valve (416), the 11 low-reading thermometer (411), the 7th remote pressure gauge (404), the 8th remote pressure gauge (414), the 7th on-the-spot tensimeter (405), the 8th on-the-spot tensimeter (415) and low temperature flowmeter (412); Wherein, fine filter (401) is installed in liquid nitrogen pump system (400) entrance pipe place; Fine filter (401) one ends link to each other with the 39 hand stop valve (315) in the subcooler system (300) by pipeline; Fine filter (401) other end is equipped with triplate line, the pipeline of leading up to connects the 41 manual stop valve (406), liquid nitrogen pump (407), the 42 manual stop valve (408), the 43 hand stop valve (409) in turn, another road connects the 44 hand stop valve (410) by pipeline, and the two-way pipeline is connected in parallel to low temperature flowmeter (412) porch by triplate line; The 7th remote pressure gauge (404) and the 7th on-the-spot tensimeter (405) with after the 40 hand stop valve (403) links to each other, are installed in liquid nitrogen pump (407) porch by threeway; The 8th remote pressure gauge (414) and the 8th on-the-spot tensimeter (415) are installed in liquid nitrogen pump (407) exit, link to each other with the 45 hand stop valve (413) by threeway; The 11 low-reading thermometer (411) is installed on the export pipeline of liquid nitrogen pump (407); Low temperature flowmeter (412) is positioned on the export pipeline of liquid nitrogen pump (407); The 12 low-temperature safety valve (402), the 13 low-temperature safety valve (416) are installed in respectively on liquid nitrogen pump (407) the entrance and exit pipeline.
Carry out engine plume testing method of operating based on above-mentioned a kind of two heat sink enclosed liquid nitrogen induction systems, comprise following step:
Step 1: liquid nitrogen storage (233) liquid nitrogen filling;
Open the 9th hand stop valve (228) and finish the liquid nitrogen filling of liquid nitrogen storage (233);
Step 2: subcooler (316) main body liquid nitrogen filling;
Open the 5th hand stop valve (223), the 7th pneumatic control valve (304) and the 36 hand stop valve (311) successively and finish the liquid nitrogen filling of liquid nitrogen subcooler (316) main body;
Step 3: each liquid nitrogen heat sink precooling;
Open the 33 hand stop valve (301) successively, the 44 hand stop valve (410), the 16 hand stop valve (514), the 17 hand stop valve (515), the 18 hand stop valve (516), the 19 hand stop valve (517), the 31 manual stop valve (628), the 32 manual stop valve (630), the 6th pneumatic control valve (633), make liquid nitrogen enter into subcooler (316) internal pipeline, utilizing the liquid nitrogen in subcooler (316) main body is by the liquid nitrogen cooling in subcooler (316) internal pipeline, liquid nitrogen after the cooling enters into liquid nitrogen pump system (400) with subcooler (316) export pipeline, after entering into liquid nitrogen induction system (500) at last, realize gate liquid nitrogen heat sink (106), the anterior liquid nitrogen heat sink (107) of cabin body, body rear portion, cabin liquid nitrogen heat sink (108), end socket liquid nitrogen heat sink (109) carries out precooling;
Step 4: each liquid helium is heat sink and plume adsorption pump (105) precooling;
Each liquid helium is heat sink and the pre-cold-peace liquid nitrogen heat sink precooling of plume adsorption pump (105) is carried out simultaneously, open the 6th hand stop valve (224) successively, the tenth hand stop valve (501), the 11 manual stop valve (502), first pneumatic control valve (504), second pneumatic control valve (510), the 3rd pneumatic control valve (511), the 4th pneumatic control valve (512), the 5th pneumatic control valve (513), the 27 hand stop valve (622), the 28 hand stop valve (623), the 30 hand stop valve (626) is to gate liquid helium heat sink (101), the anterior liquid helium heat sink (102) of cabin body, body rear portion, cabin liquid helium heat sink (103), the end socket liquid helium is heat sink (104), plume adsorption pump (105) carries out precooling;
Step 5: heat-sink system (100) adjustment;
Regulate gate liquid nitrogen heat sink (106) temperature by the 16 hand stop valve (514), utilize the 17 hand stop valve (515) to regulate anterior liquid nitrogen heat sink (107) temperature of cabin body, utilize the 18 hand stop valve (516) to regulate body rear portion, cabin liquid nitrogen heat sink (108) temperature, utilize the 19 hand stop valve (517) to regulate end socket liquid nitrogen heat sink (109) temperature, utilize first pneumatic control valve (504) to regulate gate liquid helium heat sink (101) temperature, second pneumatic control valve (510) is regulated anterior liquid helium heat sink (102) temperature of cabin body, utilize the 3rd pneumatic control valve (511) to regulate body rear portion, cabin liquid helium heat sink (103) temperature, utilize the 4th pneumatic control valve (512) to regulate end socket liquid helium heat sink (104) temperature, utilize five pneumatic control valves (513), the 22 manual stop valve (613), the 23 hand stop valve (614), the 24 hand stop valve (615) is regulated plume adsorption pump (105) temperature, guarantees that each is heat sink even with plume adsorption pump (105) temperature;
Step 6: the closed cycle of each liquid nitrogen heat sink;
Treat each liquid nitrogen heat sink, after each liquid helium is heat sink and plume adsorption pump (105) temperature is down to liquid nitrogen temperature 77K, each liquid nitrogen heat sink can enter closed cycle, at first, open the 41 manual stop valve (406), the 42 manual stop valve (408) is to the logical liquid nitrogen precooling of liquid nitrogen pump (407), when there is the liquid nitrogen ejection in the 42 manual stop valve (408) exit, close the 42 manual stop valve (408), the 44 hand stop valve (410), open the 43 hand stop valve (409) simultaneously, finish the startup of liquid nitrogen pump (407), secondly, close the 32 manual stop valve (630), simultaneously open the 34 hand stop valve (302) gradually, finish each liquid nitrogen heat sink by the transition of open type precooling to closed cycle;
Step 7: stop the liquid nitrogen supply of the heat sink and plume adsorption pump (105) of each liquid helium;
After treating that each liquid nitrogen heat sink enters closed cycle fully, close the liquid nitrogen conveying that the tenth hand stop valve (501) stops and plume adsorption pump (105) heat sink to each liquid helium.
Carry out the satellite thermal vacuum test method of operating based on above-mentioned a kind of two heat sink enclosed liquid nitrogen induction systems, comprise following step:
Step 1: liquid nitrogen storage (233) liquid nitrogen filling;
Open the 9th hand stop valve (228) and finish the liquid nitrogen filling of liquid nitrogen storage (233);
Step 2: subcooler (316) main body liquid nitrogen filling;
Open the 5th hand stop valve (223), the 7th pneumatic control valve 304 and the 36 hand stop valve (311) successively and finish the liquid nitrogen filling of liquid nitrogen subcooler (316) main body;
Step 3: each liquid helium is heat sink and plume adsorption pump (105) precooling;
Open the 33 hand stop valve (301) successively, the 44 hand stop valve (410), the 12 manual stop valve (505), the 13 hand stop valve (506), first pneumatic control valve (504), second pneumatic control valve (510), the 3rd pneumatic control valve (511), the 4th pneumatic control valve (512), the 5th pneumatic control valve (513), the 27 hand stop valve (622), the 28 hand stop valve (623), the 30 hand stop valve (626), the 32 manual stop valve (630), the 6th pneumatic control valve (633), make liquid nitrogen enter into subcooler (316) internal pipeline, utilizing the liquid nitrogen in subcooler (316) main body is by the liquid nitrogen cooling in subcooler (316) internal pipeline, liquid nitrogen after the cooling enters into liquid nitrogen pump system (400) with subcooler (316) export pipeline, after entering into liquid nitrogen induction system (500) at last, realize gate liquid helium heat sink (101), the anterior liquid helium heat sink (102) of cabin body, body rear portion, cabin liquid helium heat sink (103), the end socket liquid helium is heat sink (104), plume adsorption pump (105) carries out precooling;
Step 4: each liquid helium is heat sink and the adjustment of plume adsorption pump (105);
Each liquid helium is heat sink and plume adsorption pump (105) precooling process in, regulate each heat sink cooling rate by the liquid nitrogen supply, regulate gate liquid helium heat sink (101) temperature by first pneumatic control valve (504), second pneumatic control valve (510) is regulated anterior liquid helium heat sink (102) temperature of cabin body, utilize the 3rd pneumatic control valve (511) to regulate body rear portion, cabin liquid helium heat sink (103) temperature, utilize the 4th pneumatic control valve (512) to regulate end socket liquid helium heat sink (104) temperature, utilize five pneumatic control valves (513), the 22 manual stop valve (613), the 23 hand stop valve (614), the 24 hand stop valve (615) is regulated plume adsorption pump (105) temperature, guarantees that each liquid helium heat becomes even with plume adsorption pump (105) temperature;
Step 5: each liquid helium is heat sink and the closed cycle of plume adsorption pump (105);
Treat each liquid nitrogen heat sink, after each liquid helium is heat sink and plume adsorption pump (105) temperature is down to liquid nitrogen temperature 77K, each liquid nitrogen heat sink can enter closed cycle, at first, open the 41 manual stop valve (406), the 42 manual stop valve (408) is to the logical liquid nitrogen precooling of liquid nitrogen pump (407), when there is the liquid nitrogen ejection in the 42 manual stop valve (408) exit, close the 42 manual stop valve (408), the 44 hand stop valve (410), open the 43 hand stop valve (409) simultaneously, finish the startup of liquid nitrogen pump (407), secondly, close the 32 manual stop valve (630), simultaneously open the 34 hand stop valve (302) gradually, finish each liquid nitrogen heat sink by the transition of open type precooling to closed cycle.
The invention has the advantages that:
1, a kind of two heat sink enclosed liquid nitrogen induction systems of the present invention can provide liquid nitrogen refrigerating for double-deck heat sink device simultaneously;
2, a kind of two heat sink enclosed liquid nitrogen induction systems of the present invention can satisfy satellite thermal vacuum test and two kinds of test demands of engine plume testing simultaneously;
When 3, carrying out satellite thermal vacuum test by a kind of two heat sink enclosed liquid nitrogen induction systems of the present invention, can be that the internal layer liquid helium is heat sink to be provided liquid nitrogen to be chilled to 77K in advance and keep constant, this moment, outer liquid nitrogen heat sink can obstructed liquid nitrogen precooling (not working);
When 4, carrying out the engine plume testing by a kind of two heat sink enclosed liquid nitrogen induction systems of the present invention, the heat sink liquid nitrogen that provides of internal layer liquid helium is provided is chilled to 80K in advance, can be outer liquid nitrogen heat sink provides liquid nitrogen to be chilled to 77K in advance and keeps constant;
5, the heat sink and outer liquid nitrogen heat sink of internal layer liquid helium all can simultaneously or link to each other with the low temperature liquid nitrogen induction system separately in a kind of two heat sink enclosed liquid nitrogen induction systems of the present invention, constitutes closed circulation system;
6, of the present invention a kind of two heat sink enclosed liquid nitrogen induction system maximum heating load that can satisfy testing requirements is 60kW, can carry out the high heat load test;
7, a kind of two heat sink enclosed liquid nitrogen induction systems of the present invention adopt liquid nitrogen pump booster-type sealing and circulating, are fit to long-play, can fully guarantee the homogeneity of heat sink temperature, reduce liquid nitrogen consumption, reduce the test run expense;
8, in a kind of two heat sink enclosed liquid nitrogen induction systems of the present invention during heat sink precooling, before liquid nitrogen enters heat-sink system, employing enters heat sink mode after allowing liquid nitrogen be introduced into subcooler, realized the synchronous precooling of heat sink and subcooler, avoid the trouble of the traditional last precooling liquid nitrogen pump of the heat sink precooling again of first precooling subcooler, saved whole induction system working time;
9, each heat sinkly all is furnished with corresponding bye-pass valve system in a kind of two heat sink enclosed liquid nitrogen induction systems of the present invention, realizes independent feed flow and adjusting, guarantee heat sink temperature evenly.
Description of drawings
Fig. 1 is the structural representation of a kind of two heat sink enclosed liquid nitrogen induction systems provided by the invention;
Fig. 2 is the workflow diagram of liquid nitrogen induction system of the present invention when carrying out the engine plume testing;
Fig. 3 is the workflow diagram of liquid nitrogen induction system of the present invention when carrying out satellite thermal vacuum test.
Among the figure:
Figure 2012100575300A00800081
Figure 2012100575300A00800091
Figure 2012100575300A00800101
Embodiment
The present invention is described in further detail below in conjunction with drawings and Examples.
A kind of two heat sink enclosed liquid nitrogen induction systems of the present invention as shown in Figure 1, comprise heat-sink system 100, liquid nitrogen supply system 200, subcooler system 300, liquid nitrogen pump system 400, heat sink entrance pipe system 500, heat sink export pipeline system 600.
As shown in Figure 1, heat-sink system 100 comprises that the gate liquid helium is heat sink 101, body anterior liquid helium in cabin is heat sink 102, body rear portion, cabin liquid helium is heat sink 103, the end socket liquid helium is heat sink 104, plume adsorption pump 105, gate liquid nitrogen heat sink 106, the anterior liquid nitrogen heat sink 107 of cabin body, body rear portion, cabin liquid nitrogen heat sink 108, end socket liquid nitrogen heat sink 109.Wherein, gate liquid nitrogen heat sink 106, the gate liquid helium is heat sink 101, end socket liquid nitrogen heat sink 109 is the circular arc disk construction with end socket liquid helium heat sink 104; The anterior liquid nitrogen heat sink 107 of cabin body, body anterior liquid helium in cabin is heat sink 102, body rear portion, cabin liquid nitrogen heat sink 108 is columnar structured with body rear portion, cabin liquid helium heat sink 103.Gate liquid nitrogen heat sink 106, the gate liquid helium is heat sink 101, the anterior liquid nitrogen heat sink 107 of cabin body, body rear portion, cabin liquid nitrogen heat sink 108 and end socket liquid helium are heat sink 104, end socket liquid nitrogen heat sink 109 arranges successively from front to back.Body anterior liquid helium in cabin is heat sink 102, body rear portion, cabin liquid helium heat sink 103 is arranged on the anterior liquid nitrogen heat sink 107 of cabin body, liquid nitrogen heat sink 108 inside, body rear portion, cabin.Plume adsorption pump 105 is arranged on heat sink 103 inside of liquid helium, body rear portion, cabin, is used for adsorbing plume gas.On space structure, above-mentioned all liquid heliums are heat sink all to be positioned at all liquid nitrogen heat sink inside, by the liquid nitrogen heat sink parcel, constitutes double-deck heat sink structure thus.
Liquid nitrogen supply system 200 is used for storing and supplying with heat-sink system 100 required liquid nitrogen, comprises liquid nitrogen storage 233 and pneumatic stopping valve 211, first hand stop valve 212, second hand stop valve 219, the 3rd hand stop valve 216, the 4th hand stop valve 218, the 5th hand stop valve 223, the 6th hand stop valve 224, the 7th hand stop valve 225, the 8th hand stop valve 226, the 9th hand stop valve 228, first remote pressure gauge 213, second remote pressure gauge 231, primary scene tensimeter 215, secondary scene tensimeter 232, low-temperature solenoid valve 217, first liquid level gauge 214, the first low-temperature safety valve 229, the second low-temperature safety valve 230, carburetor 220, liquid nitrogen storage vent valve 236.Wherein, liquid nitrogen storage 233 is used for storing liquid nitrogen, by liquid nitrogen filling in the 9th hand stop valve 228 control liquid nitrogen storages 233; Carburetor 220 entrances are communicated with liquid nitrogen storage 233 bottoms by second hand stop valve 219, outlet is communicated with liquid nitrogen storage 233 tops by pipeline, the 3rd hand stop valve 216 connects low-temperature solenoid valve 217,218 formation one tunnel of the 4th hand stop valve in turn by pipeline, and in parallel with second hand stop valve 219; Wherein, low-temperature solenoid valve 217 is used for control liquid nitrogen storage 233 and carries liquid nitrogen to carburetor 220, but remote auto control is easy to operate; The 3rd hand stop valve 216 and the 4th hand stop valve 218 are often opened, and when low-temperature solenoid valve 217 damages, close the 3rd hand stop valve 216 and the 4th hand stop valve 218, and dismantle low-temperature solenoid valve 217 maintain and replaces this moment does not all influence system's operate as normal; Second hand stop valve 219 is not worked as backup is normally closed at ordinary times, when low-temperature solenoid valve 217 damages, close the 3rd hand stop valve 216, the 4th hand stop valve 218 simultaneously, open second hand stop valve 219 and realize that liquid nitrogen storage 233 is to the liquid nitrogen conveying control of carburetor 220; The liquid nitrogen vaporization that will be transported by liquid nitrogen storage 233 by carburetor 220 is gas nitrogen, and to being supplied in the liquid nitrogen storage 233 by the top of liquid nitrogen storage 233 respectively after the gas nitrogen pressurization after the vaporization, be that liquid nitrogen pressurize in the liquid nitrogen storage 233 thus.The supply gas pressure of described carburetor 220 is adjustable between 0.4～0.6MPa, can be by the size adjustment of low-temperature solenoid valve B217 or second hand stop valve, 219 apertures, aperture means that for a short time the amount of liquid nitrogen of carrying to carburetor 220 is little, reduce simultaneously through the vaporized gas nitrogen amount in carburetor 220 backs, cause the boost pressure of liquid nitrogen storage 233 to reduce, reverse operating then causes the boost pressure of liquid nitrogen storage 233 to increase.Liquid nitrogen storage 233 tops are equipped with first remote pressure gauge 213 and primary scene tensimeter 215; First remote pressure gauge 213 and primary scene tensimeter 215 are realized in-site measurement and the remote measurement of pressure data in the liquid nitrogen storage 233 respectively; According to the data of the pressure that records, the aperture size of control low-temperature solenoid valve 217 or second hand stop valve 219.First liquid level gauge 214 also is installed on the liquid nitrogen storage 233; First liquid level gauge 214 is used for measuring the liquid nitrogen liquid level height of liquid nitrogen storage 233, when the liquid nitrogen liquid level is crossed when low the liquid nitrogen of in time annotating; Liquid nitrogen storage 233 is connected with the 5th hand stop valve 223, the five hand stop valves 223 by pipeline; The 5th hand stop valve 223 is used for the liquid nitrogen of control liquid nitrogen storage 233 and carries; The 5th hand stop valve 223 connects the first low-temperature safety valve 229, the 6th hand stop valve 224, the 7th hand stop valve 225, the second low-temperature safety valve 230 successively by pipeline, finally links to each other with heat sink entrance pipe system 500; The first low-temperature safety valve 229, the second low-temperature safety valve 230 are used for preventing the hypertonia of liquid nitrogen supply system pipeline 200, and venting, discharge opeing are used; The 7th hand stop valve 225 is used for the flow through amount of liquid nitrogen of heat sink entrance pipe system 500 of control, the 7th hand stop valve 225 links to each other with second remote pressure gauge 231, secondary scene tensimeter 232 by triplate line, second remote pressure gauge 231 is used for the force value of liquid nitrogen supply system pipeline 200 is transferred to remote computer, is convenient to the data storage, handles; Secondary scene tensimeter 232 is used for the scene and reads force value, is convenient to execute-in-place.The pipeline its lowest position is equipped with the 8th hand stop valve 226 in the liquid nitrogen supply system 200, is used for after the off-test the residual liquid nitrogen of total system pipeline of the present invention in time being discharged.Liquid nitrogen storage 233 links to each other with first hand stop valve 212, pneumatic stopping valve 211 successively by pipeline, pneumatic stopping valve 211 is time liquid valve of liquid nitrogen storage 233, but operated from a distance links to each other with liquid nitrogen storage 233, be used for when heat-sink system 100 precoolings, the flow through unnecessary liquid nitrogen of heat-sink system 100 of control and be recovered to liquid nitrogen storage 233 through heat sink export pipeline system 600, reach the purpose of saving liquid nitrogen; First hand stop valve 212 is the standby valve of pneumatic stopping valve 211, often opens at ordinary times and does not work, and when pneumatic stopping valve 211 damaged, the liquid nitrogen in the time of can controlling heat-sink systems 100 precoolings by execute-in-place first hand stop valve 212 reclaimed; Liquid nitrogen storage vent valve 236 is installed in liquid nitrogen storage 233 tops, and the gas that is used in the liquid nitrogen storage 233 discharges, and opens when needing venting, closes at ordinary times.
Heat sink entrance pipe system 500 is used for heat sink system 100 and carries liquid nitrogen, comprises the tenth hand stop valve 501, the 11 manual stop valve 502, the 12 manual stop valve 505, the 13 hand stop valve 506, the 14 hand stop valve 508, the 15 hand stop valve 509, the 16 hand stop valve 514, the 17 hand stop valve 515, the 18 hand stop valve 516, the 19 hand stop valve 517, the 3rd low-temperature safety valve 503, the 4th low-temperature safety valve 507, first pneumatic control valve 504, second pneumatic control valve 510, the 3rd pneumatic control valve 511, the 4th pneumatic control valve 512, the 5th pneumatic control valve 513.Adopt the pneumatic control valve remote adjustment to enter the amount of liquid nitrogen size of the heat sink and plume adsorption pump of each liquid helium among the present invention, can realize the high precision accurate adjustment, wherein, first pneumatic control valve 504 is connected to heat sink 101 entrances of gate liquid helium by pipeline, is used for the amount of liquid nitrogen that control enters gate liquid helium heat sink 101; Second pneumatic control valve 510 is connected to heat sink 102 entrances of the anterior liquid helium of cabin body by pipeline, is used for the amount of liquid nitrogen that control enters the anterior liquid helium heat sink 102 of cabin body; The 3rd pneumatic control valve 511 is connected to heat sink 103 entrances of body rear portion, cabin liquid helium by pipeline, is used for the amount of liquid nitrogen that control enters body rear portion, cabin liquid helium heat sink 103; The 4th pneumatic control valve 512 is connected to heat sink 104 entrances of end socket liquid helium by pipeline, is used for the amount of liquid nitrogen that control enters end socket liquid helium heat sink 104; The 5th pneumatic control valve 513 is connected to plume adsorption pump 105 entrances by pipeline, is used for the amount of liquid nitrogen that control enters plume adsorption pump 105.The amount of liquid nitrogen size that adopts the hand stop valve Field adjustment to enter each liquid nitrogen heat sink among the present invention, each liquid nitrogen heat sink does not need accurate adjustment, is reduction of expenditure, and on-the-spot coarse adjustment gets final product; Wherein, the 16 hand stop valve 514 be connected to gate liquid nitrogen heat sink 106 entrances by pipeline, be used for the amount of liquid nitrogen that control enters gate liquid nitrogen heat sink 106; The 17 hand stop valve 515 place branch roads are connected to anterior liquid nitrogen heat sink 107 entrances of cabin body, are used for the amount of liquid nitrogen that control enters the anterior liquid nitrogen heat sink 107 of cabin body; The 18 hand stop valve 516 is connected to body rear portion, cabin liquid nitrogen heat sink 108 entrances by pipeline, is used for the amount of liquid nitrogen that control enters body rear portion, cabin liquid nitrogen heat sink 108; The 19 hand stop valve 517 is connected to end socket liquid nitrogen heat sink 109 entrances by pipeline, is used for the amount of liquid nitrogen that control enters end socket liquid nitrogen heat sink 109; The tenth hand stop valve 501 is the overhead control valve of the heat sink and plume adsorption pump of each liquid helium, by the tenth hand stop valve 501 manually the control liquid nitrogen carry.The tenth hand stop valve 501 1 ends link to each other with liquid nitrogen transfer pipeline in the liquid nitrogen supply system 200, and the other end connects three branch roads at the 11 manual stop valve 502, the 3rd pneumatic control valve 504, the 12 manual stop valve 505 places respectively; Wherein, the 11 manual stop valve 502 is the overhead control valve that these four branch road liquid nitrogen are carried by four branch road entrance UNICOMs at pipeline and second pneumatic control valve 510, the 3rd pneumatic control valve 511, the 4th pneumatic control valve 512, the 5th pneumatic control valve 513 places; The 12 manual stop valve 505 links to each other with the 16 hand stop valve 514, the 17 hand stop valve 515, the 18 hand stop valve 516, the 19 hand stop valve 517 by gate liquid nitrogen heat sink 106 entrance pipes, anterior liquid nitrogen heat sink 107 entrance pipes of cabin body, body rear portion, cabin liquid nitrogen heat sink 108 entrance pipes and end socket liquid nitrogen heat sink 109 entrance pipes respectively, thus heat sink 101 entrances of gate liquid helium and each liquid nitrogen heat sink entrance is passed through pipeline UNICOM; The 13 hand stop valve 506 by pipeline with (anterior liquid nitrogen heat sink 107 entrance pipes of cabin body of the heat sink entrance pipe of all the other liquid heliums except heat sink 101 entrance pipes of gate liquid helium, body rear portion, cabin liquid nitrogen heat sink 108, the end socket liquid helium is heat sink 104 entrance pipes) with each liquid nitrogen heat sink entrance pipe (gate liquid nitrogen heat sink 106 entrance pipes, anterior liquid nitrogen heat sink 107 entrance pipes of cabin body, body rear portion, cabin liquid nitrogen heat sink 108 entrance pipes, end socket liquid nitrogen heat sink 109 entrance pipes) UNICOM is thus by the 12 manual stop valve 505, be interconnected feed flow or independent feed flow that the 13 hand stop valve 506 all liquid nitrogen heat sinks of realization and all liquid heliums are heat sink.The 14 hand stop valve 508 links to each other by the entrance pipe that the blowing pipeline is connected to second pneumatic control valve 510, the 3rd pneumatic control valve 511, the 4th pneumatic control valve 512, the 5th pneumatic control valve 513, the 14 hand stop valve 508 can be used to connect outside gas nitrogen purging system, heat sink and plume adsorption pump provides gas nitrogen to liquid helium by outside gas nitrogen purging system, blows down heat sink with each liquid helium and the plume adsorption pump 105 residual liquid nitrogen in the pipeline that links to each other.The 15 hand stop valve 509 1 ends are connected to the entrance pipe of second pneumatic control valve 510, the 3rd pneumatic control valve 511, the 4th pneumatic control valve 512, the 5th pneumatic control valve 513 by pipeline, the other end is connected directly to atmosphere by pipeline, is used for the link to each other discharging of pipeline liquid nitrogen of the heat sink and plume adsorption pump 105 of each liquid helium.The 3rd low-temperature safety valve 503 is installed on heat sink 101 entrance pipes of gate liquid helium, the 4th low-temperature safety valve 507 is installed in and blows down on the pipeline, the 3rd low-temperature safety valve 503, the 4th low-temperature safety valve 507 are used for when heat sink entrance pipe system line pressure is too high, and venting, discharge opeing are used.
Flow through when being used for the heat-sink system 100 precoolings unnecessary liquid nitrogen of heat-sink system 100 of heat sink export pipeline system 600 is recovered in the liquid nitrogen storage 233 through heat sink export pipeline system 600, comprises the 20 hand stop valve 602, the 21 manual stop valve 606, the 22 manual stop valve 613, the 23 hand stop valve 614, the 24 hand stop valve 615, the 25 hand stop valve 618, the 26 hand stop valve 621, the 27 hand stop valve 622, the 28 hand stop valve 623, the 29 hand stop valve 625, the 30 hand stop valve 626, the 31 manual stop valve 628, the 32 manual stop valve 630, first low-reading thermometer 601, second low-reading thermometer 607, the 3rd low-reading thermometer 608, the 4th low-reading thermometer 609, the 5th low-reading thermometer 610, the 6th low-reading thermometer 611, the 7th low-reading thermometer 612, the 8th low-reading thermometer 632, the 5th low-temperature safety valve 605, the 6th low-temperature safety valve 616, the 7th low-temperature safety valve 617, the 8th low-temperature safety valve 624, the 9th low-temperature safety valve 627, the tenth low-temperature safety valve 629, the 11 low-temperature safety valve 631, the 3rd remote pressure gauge 603, the 4th remote pressure gauge 619, the 3rd on-the-spot tensimeter 604, the 4th on-the-spot tensimeter 620 and the 6th pneumatic control valve 633.Wherein, the 21 manual stop valve 606 1 ends are by the straight-through atmosphere of pipeline, the other end connects the 5th low-temperature safety valve 605, the 21 manual stop valve 602, the 3rd remote pressure gauge 603 to heat sink 101 outlets of gate liquid helium in turn by pipeline, forms the heat sink 101 outlet discharge pipes of gate liquid helium; The 20 hand stop valve 602 also links to each other with the 3rd on-the-spot tensimeter 604, first low-reading thermometer 601, first low-reading thermometer 601 is used for measuring the temperature in heat sink 101 exits of liquid helium, gate, and the 3rd remote pressure gauge 603 and the 3rd on-the-spot tensimeter 604 are used for measuring heat sink 101 outlet pressure of gate liquid helium.The 26 hand stop valve 621 1 ends are by the straight-through atmosphere of pipeline, after the other end connects the 25 hand stop valve 618, the 7th low-temperature safety valve 617 in turn by pipeline, be connected with six road pipelines respectively, the first via is connected to heat sink 102 outlets of the anterior liquid helium of cabin body by second low-reading thermometer 607, and second low-reading thermometer 607 is used for heat sink 102 outlet temperatures of the anterior liquid helium of survey room body; The second the tunnel is connected to body rear portion, cabin liquid helium heat sink 103 by the 3rd low-reading thermometer 608 exports, and the 3rd low-reading thermometer 608 is used for heat sink 103 outlet temperatures of survey room body rear portion liquid helium; Third Road is connected to heat sink 104 outlets of end socket liquid helium by the 4th low-reading thermometer 609, and the 4th low-reading thermometer 609 is used for measuring heat sink 104 outlet temperatures of end socket liquid helium; The four the tunnel is connected to plume adsorption pump 105 big tubes by the 22 manual stop valve 613, the 5th low-reading thermometer 610 exports, the 5th low-reading thermometer 610 is used for measuring 105 big outlet temperatures of plume adsorption pump, and the 22 manual stop valve 613 is used for control by the liquid nitrogen flow size of plume adsorption pump 105 big tubes; The five the tunnel is connected in the plume adsorption pump 105 the tube outlet by the 23 hand stop valve 614, the 6th low-reading thermometer 611, the 6th low-reading thermometer 611 is used for measuring 105 outlet temperatures of plume adsorption pump, and the 23 hand stop valve 614 is used for control by the liquid nitrogen flow size of 105 of plume adsorption pumps; LIULUTONG is crossed the 24 hand stop valve 615, the 7th low-reading thermometer 612 is connected to the 105 little tube outlets of plume adsorption pump, the 7th low-reading thermometer 612 is used for measuring 105 little outlet temperatures of plume adsorption pump, and the 24 hand stop valve 615 is used for control by the liquid nitrogen flow size of plume adsorption pump 105 little tubes.Form the heat sink and plume adsorption pump outlet discharge pipe of other liquid heliums except gate liquid helium heat sink 106 thus, described 25 hand stop valves 618 link to each other with the 4th remote pressure gauge 619, the 4th on-the-spot tensimeter 620, the 4th remote pressure gauge 619 is used for force value is transferred to remote computer, be convenient to the data storage, handle, the 4th on-the-spot tensimeter 620 is used for the scene and reads force value, is convenient to execute-in-place.The 6th pneumatic control valve 633 is used for discharging the gas nitrogen in the total system, one end is by the straight-through atmosphere of pipeline, the other end is connected with four road pipelines respectively after connecting the 8th low-reading thermometer 632, the 11 low-temperature safety valve 631, the 32 manual stop valve 630, the tenth low-temperature safety valve 629, the 31 manual stop valve 628, the 9th low-temperature safety valve 627 in turn by pipeline, and four road pipelines are connected to gate liquid nitrogen heat sink 106, the anterior liquid nitrogen heat sink 107 of cabin body, body rear portion, cabin liquid nitrogen heat sink 108, end socket liquid nitrogen heat sink 109 respectively.Outlet discharge pipe by the 27 hand stop valve 622 that the discharge pipe of the outlet of gate liquid helium heat sink 101 is heat sink with all the other liquid heliums and plume adsorption pump 105 is communicated with.By the 28 hand stop valve 623, the 8th low-temperature safety valve 624, the 30 hand stop valve 626 is heat sink with each liquid helium, the outlet discharge pipe of plume adsorption pump and each liquid nitrogen heat sink is communicated with the formation pipe network system, concrete connected mode is: the 28 hand stop valve 623 1 ends are communicated with plume adsorption pump 105 outlet discharge pipes by pipeline, the other end connects the 8th low-temperature safety valve 624 in turn by pipeline, the 30 hand stop valve 626 is connected between the 31 manual stop valve 628 and the tenth low-temperature safety valve 629 on the pipeline, the 28 hand stop valve 623, require to close simultaneously or open simultaneously during 626 operations of the 30 hand stop valve.The 8th low-temperature safety valve 624 is installed on the pipeline between the 28 hand stop valve 623 and the 30 hand stop valve 626, is used for exitting when this section line pressure is too high.The 29 hand stop valve 625 1 ends are connected between the 28 hand stop valve 623 and the 30 hand stop valve 626, and the other end leads directly to atmosphere, are used for the discharging of fluid (liquid or gas).The 6th pneumatic control valve 633 and the pipeline of 631 on the 11 low-temperature safety valve link to each other with pneumatic stopping valve 201 in the liquid nitrogen supply system 200, reach the purpose that liquid nitrogen storage 233 reclaims liquid nitrogen.Described the 6th low-temperature safety valve 616 is installed on the 21 manual stop valve 615 entrance pipes, is used for venting when this section line pressure is too high.
Subcooler system 300 is used for the liquid nitrogen refrigerating cooling that each liquid nitrogen heat sink of subtend is carried, make the gas nitrogen liquefaction that contains in the liquid nitrogen of carrying, comprise subcooler 316 and the 33 hand stop valve 301, the 34 hand stop valve 302, the 35 hand stop valve 305, the 36 hand stop valve 311, the 37 hand stop valve 312, the 38 hand stop valve 314, the 39 hand stop valve 315, the 9th low-reading thermometer 303, the tenth low-reading thermometer 313, the 7th pneumatic control valve 304, the 5th remote pressure gauge 306, the 6th remote pressure gauge 308, the 5th on-the-spot tensimeter 307, the 6th on-the-spot tensimeter 309 and second liquid level gauge 310.Wherein, the 33 hand stop valve 301 is feed liquor and the make-up valve of subcooler system 300, the liquid nitrogen transfer pipeline that the first low-temperature safety valve 229 in one end and the liquid nitrogen supply system 200, the 6th hand stop valve are 224 is communicated with, the other end is communicated with supercooling tube road liquid feeding end in subcooler 316 main bodys by pipeline, makes the liquid nitrogen in the liquid nitrogen supply system 200 can enter into cooler system 300 thus; When heat-sink system 100 precoolings, can carry by the liquid nitrogen in the 33 hand stop valve 301 control supercooling tube roads; After subcooler system 300 enters closed cycle after heat sink precooling finishes, can carry out fluid infusion to the supercooling tube road by the size of regulating the 33 hand stop valve 301 apertures, guarantee the abundance of the interior liquid nitrogen of pipeline in the subcooler system 300.The 9th low-reading thermometer 303 is arranged on porch, supercooling tube road, is used for measuring supercooling tube road temperature in; The 7th pneumatic control valve 304 1 ends are communicated with the liquid nitrogen transfer pipeline of 224 of the 6th hand stop valves by the first low-temperature safety valve 229 in pipeline and the liquid nitrogen supply system 200, be used for control and carry liquid nitrogen in subcooler 316 main bodys.Second liquid level gauge 310 is installed on the subcooler 316, be used for measuring liquid nitrogen liquid level in subcooler 316 main bodys, and can come remote auto to regulate subcooler 316 main body liquid nitrogen liquid levels by the size that second liquid level gauge 310 records numerical value, keep the constant of liquid level in subcooler 316 main bodys.The 5th remote pressure gauge 306 and the 5th on-the-spot tensimeter 307 are connected to exit, supercooling tube road by the 35 hand stop valve 305, the 5th remote pressure gauge 306, the 5th on-the-spot tensimeter 307 are delivered to host computer by the 5th remote pressure gauge 306 with the pressure value that records and are realized remote measurement all for the pressure of measuring porch, supercooling tube road; Realize on-the-spot directly perceived the measurement by the 5th on-the-spot tensimeter 307, be convenient to the field staff and check; The 35 hand stop valve 305 is used for the start and stop of controlled pressure table; When 35 hand stop valves 305 are opened, the 5th remote pressure gauge 306 and the 5th on-the-spot tensimeter 307 work; When the 35 hand stop valve 305 cut out, the 5th remote pressure gauge 306 and the 5th on-the-spot tensimeter 307 were not worked; When the 5th remote pressure gauge 306 or the 5th on-the-spot tensimeter 307 damage, can close the 35 hand stop valve 305 and change, not influence subcooler system 300 in the process of replacing and normally move.In like manner, all for measuring subcooler 316 main body pressure, the pressure value that the 6th remote pressure gauge 309 records is delivered to host computer and is realized remote measurement for the 6th remote pressure gauge 308, the 6th on-the-spot tensimeter 309; The 6th on-the-spot table 309 of pressing is realized on-the-spot directly perceived the measurement, is convenient to the field staff and checks; At subcooler 316 main body tip positions the 36 hand stop valve 311 is installed, is used for the nitrogen that discharging produces because of liquid nitrogen gasification.In subcooler 316 bottom part body positions the 37 hand stop valve 312 is installed, for the discharging of remaining liquid nitrogen in subcooler 316 main bodys after the off-test.The 39 hand stop valve 315 is connected to exit, supercooling tube road by pipeline, and the 39 hand stop valve 315 also is connected in liquid nitrogen pump system 400 and the heat sink export pipeline system 600 on the 11 low-temperature safety valve 631 and 630 pipelines of the 32 manual stop valve by pipeline; Described the 39 hand stop valve 315 installation sites are higher than the outlet of supercooling tube road, be convenient to the discharging of the gas nitrogen that produces in the pipelines in the subcooler system 300, the gas nitrogen that produces in the pipelines in the subcooler system 300 is discharged with the 6th pneumatic control valve 633 in the heat sink export pipeline system 600.The 38 hand stop valve 314 1 ends are connected on the 37 hand stop valve 312 and the subcooler 316 intersubjective pipelines by pipeline, the other end is connected on the pipeline between the 39 hand stop valve 315 and the heat sink export pipeline system 600, is used for the recovery of subcooler 316 main body liquid nitrogen after the control off-test.The tenth low-reading thermometer 313 is arranged on exit, supercooling tube road, is used for measuring supercooling tube road outlet temperature.The 34 hand stop valve 302 1 ends are communicated with porch, supercooling tube road by pipeline, the other end is connected on the pipeline of 629 of the 32 manual stop valves 630 and the tenth low-temperature safety valve in the heat sink export pipeline system 600 by pipeline, when whole induction system closed cycle, the unnecessary liquid nitrogen of the heat-sink system 100 of flowing through during heat-sink system 100 precoolings can enter into subcooler system 300 thus.
Liquid nitrogen pump system 400 is used for heat sink entrance pipe system 500 and carries liquid nitrogen after the cooling, and realize the closed cycle refrigeration of heat-sink system 100, and be transported to heat sink entrance pipe system 500 through the liquid nitrogen after 300 coolings of subcooler system after, enter each liquid nitrogen heat sink.Liquid nitrogen pump system 400 comprises fine filter 401, liquid nitrogen pump 407, the 40 hand stop valve 403, the 41 manual stop valve 406, the 42 manual stop valve 408, the 43 hand stop valve 409, the 44 hand stop valve 410, the 45 hand stop valve 413, the 12 low-temperature safety valve 402, the 13 low-temperature safety valve 416, the 11 low-reading thermometer 411, the 7th remote pressure gauge 404, the 8th remote pressure gauge 414, the 7th on-the-spot tensimeter 405, the 8th on-the-spot tensimeter 415 and low temperature flowmeter 412.Wherein, fine filter 401 is installed in liquid nitrogen pump system 400 entrance pipe places, is used for impurity screening, guarantees to flow into the liquid nitrogen cleaning of liquid nitrogen pump 407, avoids because there is the damage that causes liquid nitrogen pump 407 in impurity.Fine filter 401 1 ends link to each other with the 39 hand stop valve 315 in the subcooler system 300 by pipeline, make the liquid nitrogen after 300 coolings of subcooler system can enter into liquid nitrogen pump system 400 thus; Fine filter 401 other ends are equipped with triplate line, the pipeline of leading up to connects the 41 manual stop valve 406, liquid nitrogen pump 407, the 43 hand stop valve 409 in turn, another road connects the 44 hand stop valve 410 by pipeline, and the two-way pipeline is connected in parallel to low temperature flowmeter 412 porch by triplate line.Wherein, 44 hand stop valves, 410 place branch roads are heat sink precooling dedicated line, this pipeline work during heat sink precooling.Liquid nitrogen pump 407 place pipelines are system's closed cycle dedicated line, use this pipeline after heat sink precooling finishes.The 42 manual stop valve 408 1 ends are communicated with liquid nitrogen pump 407 export pipelines by pipeline, the other end is communicated with atmosphere, close at ordinary times, when starting liquid nitrogen pump 407, open by needs, close this valve when observing when the 42 manual stop valve 408 exits have liquid nitrogen to continue to flow out, start liquid nitrogen pump 407 simultaneously.The 7th remote pressure gauge 404 and the 7th on-the-spot tensimeter 405 are installed in liquid nitrogen pump 407 porch, are used for measuring liquid nitrogen pump 407 entrance pipe pressure, by the 403 control start and stop of the 40 hand stop valve.The 8th remote pressure gauge 414 and the 8th on-the-spot tensimeter 415 are installed in liquid nitrogen pump 407 exits, link to each other with the 45 hand stop valve 413 by threeway, all for measuring liquid nitrogen pump 407 export pipeline pressure, by the 413 control start and stop of the 45 hand stop valve.The 11 low-reading thermometer 411 is installed on the export pipeline of liquid nitrogen pump 407, is used for measuring the liquid nitrogen temperature of the liquid nitrogen pump 407 of flowing through; Low temperature flowmeter 412 is positioned on the export pipeline of liquid nitrogen pump 407, is used for measuring the liquid nitrogen flow of the liquid nitrogen pump 407 of flowing through, and can according to actual needs low temperature flowmeter 412 be installed in the 11 low-reading thermometer 411 left sides or right side.The 12 low-temperature safety valve 402, the 13 low-temperature safety valve 416 are installed in respectively on the liquid nitrogen pump 407 entrance and exit pipelines, are used for preventing that line pressure is too high, and venting, discharge opeing are used.
When carrying out the engine plume testing, liquid nitrogen heat sink, liquid helium is heat sink and the plume adsorption pump need be worked simultaneously, and corresponding liquid nitrogen induction system workflow is specially and comprises following step, as shown in Figure 2:
Step 1: liquid nitrogen storage 233 liquid nitrogen filling;
Open the 9th hand stop valve 228 and finish the liquid nitrogen filling of liquid nitrogen storage 233;
Step 2: subcooler 316 main body liquid nitrogen filling;
Open the 6th hand stop valve 223, the 7th pneumatic control valve 304 and the 36 hand stop valve 311 successively and finish the liquid nitrogen filling of liquid nitrogen subcooler 316 main bodys, crack the 7th pneumatic control valve 304 of filling initial stage, utilize the cold nitrogen of initial stage evaporation fully to blow down the interior air of subcooler 316 main bodys, standard-sized sheet the 7th pneumatic control valve 304 and quick filling are up to specifying liquid level then, and according to the numerical value of second liquid level gauge 310, the aperture of remote adjustment the 7th pneumatic control valve 304 is to keep the constant of liquid level;
Step 3: each liquid nitrogen heat sink precooling;
Open the 33 hand stop valve 301 successively, the 44 hand stop valve 410, the 16 hand stop valve 514, the 17 hand stop valve 515, the 18 hand stop valve 516, the 19 hand stop valve 517, the 31 manual stop valve 628, the 32 manual stop valve 630, the 6th pneumatic control valve 633, make liquid nitrogen enter into subcooler 316 internal pipelines, utilizing the liquid nitrogen in subcooler 316 main bodys is by the liquid nitrogen cooling in subcooler 316 internal pipelines, liquid nitrogen after the cooling enters into liquid nitrogen pump system 400 with subcooler 316 export pipelines, after entering into liquid nitrogen induction system 500 at last, realization is to gate liquid nitrogen heat sink 106, the anterior liquid nitrogen heat sink 107 of cabin body, body rear portion, cabin liquid nitrogen heat sink 108, end socket liquid nitrogen heat sink 109 carries out precooling (cooling procedure from normal temperature to 77K), and this process forms the open type precooling of each liquid nitrogen heat sink;
Step 4: each liquid helium is heat sink and 105 precoolings of plume adsorption pump;
Each liquid helium is heat sink and the 105 pre-cold-peace liquid nitrogen heat sink precoolings of plume adsorption pump are carried out simultaneously, open the 6th hand stop valve 224 successively, the tenth hand stop valve 501, the 11 manual stop valve 502, first pneumatic control valve 504, second pneumatic control valve 510, the 3rd pneumatic control valve 511, the 4th pneumatic control valve 512, the 5th pneumatic control valve 513, the 27 hand stop valve 622, the 28 hand stop valve 623, the 30 hand stop valve 626, to gate liquid helium heat sink 101, the anterior liquid helium heat sink 102 of cabin body, body rear portion, cabin liquid helium heat sink 103, the end socket liquid helium is heat sink 104, plume adsorption pump 105 carries out precooling (cooling procedure from normal temperature to 77K), and this process forms the open type precooling of the heat sink and plume adsorption pump 105 of each liquid helium;
Step 5: heat-sink system 100 adjustment;
At each liquid nitrogen heat sink, liquid helium is heat sink and plume adsorption pump 105 precooling process in, regulate each heat sink cooling rate by the liquid nitrogen supply, to guarantee that each is heat sink even with plume adsorption pump temperature, utilize the 16 hand stop valve 514 to regulate gate liquid nitrogen heat sink 106 temperature, utilize the 17 hand stop valve 515 to regulate anterior liquid nitrogen heat sink 107 temperature of cabin body, utilize the 18 hand stop valve 516 to regulate body rear portion, cabin liquid nitrogen heat sink 108 temperature, utilize the 19 hand stop valve 517 to regulate end socket liquid nitrogen heat sink 109 temperature, utilize first pneumatic control valve 504 to regulate heat sink 101 temperature of gate liquid helium, second pneumatic control valve 510 is regulated heat sink 102 temperature of the anterior liquid helium of cabin body, utilize the 3rd pneumatic control valve 511 to regulate heat sink 103 temperature of body rear portion, cabin liquid helium, utilize the 4th pneumatic control valve 512 to regulate heat sink 104 temperature of end socket liquid helium, utilize five pneumatic control valves 513, the 22 manual stop valve 613, the 23 hand stop valve 614, the 24 hand stop valve 615 is regulated plume adsorption pump 105 temperature;
Step 6: the closed cycle of each liquid nitrogen heat sink;
Treat each liquid nitrogen heat sink, after each liquid helium is heat sink and plume adsorption pump 105 temperature are down to liquid nitrogen temperature 77K, each liquid nitrogen heat sink can enter closed cycle, at first, open the 41 manual stop valve 406, the 407 logical liquid nitrogen precoolings of 408 pairs of liquid nitrogen pumps of the 42 manual stop valve, when there is the liquid nitrogen ejection in the 42 manual stop valve 408 exits (rule of thumb precooling got final product in about 15 minutes), close the 42 manual stop valve 408, the 44 hand stop valve 410, open the 43 hand stop valve 409 simultaneously, finish the startup of liquid nitrogen pump 407, secondly, (aperture is by 70% to close the 32 manual stop valve 630 gradually, 50%, 0% carry out or according to practical adjustments), (aperture is by 30% to open simultaneously the 34 hand stop valve 302 gradually, 50%, 100% carry out or according to practical adjustments), finish each liquid nitrogen heat sink by the transition of open type precooling to closed cycle, enter after the closed cycle crack the 39 hand stop valve 315 and use for the system pipelines venting;
Step 7: stop the liquid nitrogen supply of the heat sink and plume adsorption pump 105 of each liquid helium;
After treating that each liquid nitrogen heat sink enters closed cycle fully, close the liquid nitrogen conveying that the tenth hand stop valve 501 stops and plume adsorption pump 105 heat sink to each liquid helium.
When carrying out satellite thermal vacuum test, each liquid helium is heat sink and plume adsorption pump 105 is worked simultaneously, and each liquid nitrogen heat sink is not worked as protective shield of radiation, be specially to comprise following step, as shown in Figure 3:
Step 1: liquid nitrogen storage A234 liquid nitrogen filling;
Open the 9th hand stop valve 228 and finish the liquid nitrogen filling of liquid nitrogen storage 233;
Step 2: subcooler 316 main body liquid nitrogen filling;
Open the 5th hand stop valve 223, the 7th pneumatic control valve 304 and the 36 hand stop valve 311 successively and finish the liquid nitrogen filling of liquid nitrogen subcooler 316 main bodys, crack the 7th pneumatic control valve 304 of filling initial stage, utilize the cold nitrogen of initial stage evaporation fully to blow down the interior air of subcooler 316 main bodys, standard-sized sheet the 7th pneumatic control valve 304 and quick filling are up to specifying liquid level then, and according to the numerical value of second liquid level gauge 310, the aperture of remote adjustment the 7th pneumatic control valve 304 is to keep the constant of liquid level;
Step 3: each liquid helium is heat sink and 105 precoolings of plume adsorption pump;
Open the 33 hand stop valve 301 successively, the 44 hand stop valve 410, the 12 manual stop valve 505, the 13 hand stop valve 506, first pneumatic control valve 504, second pneumatic control valve 510, the 3rd pneumatic control valve 511, the 4th pneumatic control valve 512, the 5th pneumatic control valve 513, the 27 hand stop valve 622, the 28 hand stop valve 623, the 30 hand stop valve 626, the 32 manual stop valve 630, the 6th pneumatic control valve 633, make liquid nitrogen enter into subcooler 316 internal pipelines, utilizing the liquid nitrogen in subcooler 316 main bodys is by the liquid nitrogen cooling in subcooler 316 internal pipelines, liquid nitrogen after the cooling enters into liquid nitrogen pump system 400 with subcooler 316 export pipelines, after entering into liquid nitrogen induction system 500 at last, realization is to gate liquid helium heat sink 101, the anterior liquid helium heat sink 102 of cabin body, body rear portion, cabin liquid helium heat sink 103, the end socket liquid helium is heat sink 104, plume adsorption pump 105 carries out precooling (cooling procedure from normal temperature to 77K), and this process forms the open type precooling of the heat sink and plume adsorption pump 105 of each liquid helium;
Step 4: each liquid helium is heat sink and the adjustment of plume adsorption pump 105;
Each liquid helium is heat sink and plume adsorption pump 105 precooling process in, regulate each heat sink cooling rate by the liquid nitrogen supply, with guarantee each liquid helium heat sink with plume adsorption pump 105 temperature even; Regulate heat sink 101 temperature of gate liquid helium by first pneumatic control valve 504, second pneumatic control valve 510 is regulated heat sink 102 temperature of the anterior liquid helium of cabin body, utilize the 3rd pneumatic control valve 511 to regulate heat sink 103 temperature of body rear portion, cabin liquid helium, utilize the 4th pneumatic control valve 512 to regulate heat sink 104 temperature of end socket liquid helium, utilize five pneumatic control valves 513, the 22 manual stop valve 613, the 23 hand stop valve 614, the 24 hand stop valve 615 to regulate plume adsorption pump 105 temperature.
Step 5: each liquid helium is heat sink and the closed cycle of plume adsorption pump 105;
Treat each liquid nitrogen heat sink, after each liquid helium is heat sink and plume adsorption pump 105 temperature are down to liquid nitrogen temperature 77K, each liquid nitrogen heat sink can enter closed cycle, at first, open the 41 manual stop valve 406, the 407 logical liquid nitrogen precoolings of 408 pairs of liquid nitrogen pumps of the 42 manual stop valve, when there is the liquid nitrogen ejection in the 42 manual stop valve 408 exits (rule of thumb precooling got final product in about 15 minutes), close the 42 manual stop valve 408, the 44 hand stop valve 410, open the 43 hand stop valve 409 simultaneously, finish the startup of liquid nitrogen pump 407, secondly, (aperture is by 70% to close the 32 manual stop valve 630 gradually, 50%, 0% carry out or according to practical adjustments), (aperture is by 30% to open simultaneously the 34 hand stop valve 302 gradually, 50%, 100% carry out or according to practical adjustments), finish each liquid nitrogen heat sink by the transition of open type precooling to closed cycle, enter after the closed cycle crack the 39 hand stop valve 315 and use for the system pipelines venting.
The maximum heating load that of the present invention a kind of two heat sink enclosed liquid nitrogen induction system can satisfy testing requirements is 60kW, can carry out the high heat load test.

Claims (10)

1. a two heat sink enclosed liquid nitrogen induction system is characterized in that: comprise heat-sink system (100), liquid nitrogen supply system (200), subcooler system (300), liquid nitrogen pump system (400), heat sink entrance pipe system (500), heat sink export pipeline system (600);
Heat-sink system (100) comprises gate liquid helium heat sink (101), cabin body anterior liquid helium heat sink (102), body rear portion, cabin liquid helium heat sink (103), the end socket liquid helium is heat sink (104), plume adsorption pump (105), gate liquid nitrogen heat sink (106), the anterior liquid nitrogen heat sink (107) of cabin body, body rear portion, cabin liquid nitrogen heat sink (108), end socket liquid nitrogen heat sink (109); Gate liquid nitrogen heat sink (106), the gate liquid helium is heat sink (101), the anterior liquid nitrogen heat sink (107) of cabin body, body rear portion, cabin liquid nitrogen heat sink (108) arrange successively from front to back with end socket liquid helium heat sink (104), end socket liquid nitrogen heat sink (109); The anterior liquid helium heat sink (102) of cabin body, body rear portion, cabin liquid helium heat sink (103) are separately positioned on the anterior liquid nitrogen heat sink (107) of cabin body, body rear portion, cabin liquid nitrogen heat sink (108) inside; Plume adsorption pump (105) is arranged on body rear portion, cabin liquid helium heat sink (103) inside, is used for adsorbing plume gas;
Liquid nitrogen supply system (200) comprises liquid nitrogen storage (233) and pneumatic stopping valve (211), first hand stop valve (212), second hand stop valve (219), the 3rd hand stop valve (216), the 4th hand stop valve (218), the 5th hand stop valve (223), the 6th hand stop valve (224), the 7th hand stop valve (225), the 8th hand stop valve (226), the 9th hand stop valve (228), first remote pressure gauge (213), second remote pressure gauge (231), primary scene tensimeter (215), secondary scene tensimeter (232), low-temperature solenoid valve (217), first liquid level gauge (214), the first low-temperature safety valve (229), the second low-temperature safety valve (230), carburetor (220), liquid nitrogen storage vent valve (236); Wherein, by the interior liquid nitrogen filling of the 9th hand stop valve (228) control liquid nitrogen storage (233); Carburetor (220) entrance is communicated with liquid nitrogen storage (233) bottom by second hand stop valve (219), and outlet is communicated with liquid nitrogen storage (233) by pipeline, and low-temperature solenoid valve (217) is in parallel with second hand stop valve (219) by pipeline; First remote pressure gauge (213) and primary scene tensimeter (215) are installed on the liquid nitrogen storage (233); First liquid level gauge (214) also is installed on the liquid nitrogen storage (233); Liquid nitrogen storage (233) is connected with the 5th hand stop valve (223) by pipeline; The 5th hand stop valve (223) connects the first low-temperature safety valve (229), the 6th hand stop valve (224), the 7th hand stop valve (225), the second low-temperature safety valve (230) successively by pipeline, finally links to each other with heat sink entrance pipe system (500); The 7th hand stop valve (225) links to each other with second remote pressure gauge (231), secondary scene tensimeter (232) by triplate line; The pipeline its lowest position is equipped with the 8th hand stop valve (226) in the liquid nitrogen supply system (200); Liquid nitrogen storage (233) links to each other with pneumatic stopping valve (211) by pipeline; Liquid nitrogen storage vent valve (236) also is installed on the liquid nitrogen storage (233);
Heat sink entrance pipe system (500) comprises the tenth hand stop valve (501), the 11 manual stop valve (502), the 12 manual stop valve (505), the 13 hand stop valve (506), the 14 hand stop valve (508), the 15 hand stop valve (509), the 16 hand stop valve (514), the 17 hand stop valve (515), the 18 hand stop valve (516), the 19 hand stop valve (517), the 3rd low-temperature safety valve (503), the 4th low-temperature safety valve (507), first pneumatic control valve (504), second pneumatic control valve (510), the 3rd pneumatic control valve (511), the 4th pneumatic control valve (512), the 5th pneumatic control valve (513); Wherein, first pneumatic control valve (504) is connected to gate liquid helium heat sink (101) entrance by pipeline; Second pneumatic control valve (510) is connected to anterior liquid helium heat sink (102) entrance of cabin body by pipeline; The 3rd pneumatic control valve (511) is connected to body rear portion, cabin liquid helium heat sink (103) entrance by pipeline; The 4th pneumatic control valve (512) is connected to end socket liquid helium heat sink (104) entrance by pipeline; The 5th pneumatic control valve (513) is connected to plume adsorption pump (105) entrance by pipeline; The 16 hand stop valve (514) is connected to gate liquid nitrogen heat sink (106) entrance by pipeline; The 17 hand stop valve (515) place branch road is connected to anterior liquid nitrogen heat sink (107) entrance of cabin body; The 18 hand stop valve (516) is connected to body rear portion, cabin liquid nitrogen heat sink (108) entrance by pipeline; The 19 hand stop valve (517) is connected to end socket liquid nitrogen heat sink (109) entrance by pipeline; The tenth hand stop valve (501) is the overhead control valve of the heat sink and plume adsorption pump of each liquid helium, manually controls liquid nitrogen by the tenth hand stop valve (501) and carries; The tenth hand stop valve (501) one ends link to each other with liquid nitrogen transfer pipeline in the liquid nitrogen supply system (200), and the other end connects three branch roads at the 11 manual stop valve (502), the 3rd pneumatic control valve (504), the 12 manual stop valve (505) place respectively; Wherein, the 11 manual stop valve (502) is by four branch road entrance UNICOMs at pipeline and second pneumatic control valve (510), the 3rd pneumatic control valve (511), the 4th pneumatic control valve (512), the 5th pneumatic control valve (513) place, the overhead control valve of carrying as four branch road liquid nitrogen; The 12 manual stop valve (505) links to each other with the 15 hand stop valve (514), the 17 hand stop valve (515), the 18 hand stop valve (516), the 19 hand stop valve (517) by gate liquid nitrogen heat sink (106) entrance pipe, anterior liquid nitrogen heat sink (107) entrance pipe of cabin body, body rear portion, cabin liquid nitrogen heat sink (108) entrance pipe and end socket liquid nitrogen heat sink (109) entrance pipe respectively, thus heat sink (101) entrance of gate liquid helium and each liquid nitrogen heat sink entrance is passed through pipeline UNICOM; The 13 hand stop valve (506) by pipeline with anterior liquid helium heat sink (102) entrance pipe of cabin body, body rear portion, cabin liquid helium heat sink (103), the end socket liquid helium is heat sink (104) entrance pipe and gate liquid nitrogen heat sink (106) entrance pipe, anterior liquid nitrogen heat sink (107) entrance pipe of cabin body, body rear portion, cabin liquid nitrogen heat sink (108) entrance pipe, end socket liquid nitrogen heat sink (109) entrance pipe UNICOM the 14 hand stop valves (508) are by blowing down pipeline and second pneumatic control valve (510), the 3rd pneumatic control valve (511), the 4th pneumatic control valve (512), the entrance pipe of the 5th pneumatic control valve (513) links to each other; The 15 hand stop valve (509) one ends are connected to the entrance pipe of second pneumatic control valve (510), the 3rd pneumatic control valve (511), the 4th pneumatic control valve (512), the 5th pneumatic control valve (513) by pipeline, and the other end is connected directly to atmosphere by pipeline; The 3rd low-temperature safety valve (503) is installed on gate liquid helium heat sink (101) entrance pipe, and the 4th low-temperature safety valve (507) is installed in and blows down on the pipeline;
Heat sink export pipeline system (600) comprises the 20 hand stop valve (602), the 21 manual stop valve (606), the 22 manual stop valve (613), the 23 hand stop valve (614), the 24 hand stop valve (615), the 25 hand stop valve (618), the 26 hand stop valve (621), the 27 hand stop valve (622), the 28 hand stop valve (623), the 29 hand stop valve (625), the 30 hand stop valve (626), the 31 manual stop valve (628), the 32 manual stop valve (630), first low-reading thermometer (601), second low-reading thermometer (607), the 3rd low-reading thermometer (608), the 4th low-reading thermometer (609), the 5th low-reading thermometer (610), the 6th low-reading thermometer (611), the 7th low-reading thermometer (612), the 8th low-reading thermometer (632), the 5th low-temperature safety valve (605), the 6th low-temperature safety valve (616), the 7th low-temperature safety valve (617), the 8th low-temperature safety valve (624), the 9th low-temperature safety valve (627), the tenth low-temperature safety valve (629), the 11 low-temperature safety valve (631), the 3rd remote pressure gauge (603), the 4th remote pressure gauge (619), the 3rd on-the-spot tensimeter (604), the 4th on-the-spot tensimeter (620) and the 6th pneumatic control valve (633); Wherein, the 21 manual stop valve (606) one ends are by the straight-through atmosphere of pipeline, the other end connects the 5th low-temperature safety valve (605), the 20 hand stop valve (602), the 3rd remote pressure gauge (603) to gate liquid helium heat sink (101) outlet in turn by pipeline, forms gate liquid helium heat sink (101) outlet discharge pipe; The 20 hand stop valve (602) also links to each other with the 3rd on-the-spot tensimeter (604), first low-reading thermometer (601); The 26 hand stop valve (621) one ends are by the straight-through atmosphere of pipeline, after the other end connects the 25 hand stop valve (618), the 7th low-temperature safety valve (617) in turn by pipeline, be connected with six road pipelines respectively, the first via is connected to the anterior liquid helium of cabin body heat sink (102) outlet by second low-reading thermometer (607); The second the tunnel is connected to body rear portion, cabin liquid helium heat sink 103 by the 3rd low-reading thermometer (608) exports; Third Road is connected to end socket liquid helium heat sink (104) outlet by the 4th low-reading thermometer (609); The four the tunnel is connected to plume adsorption pump 105 big tubes by the 22 manual stop valve (613), the 5th low-reading thermometer (610) exports; The five the tunnel is connected to the middle tube of plume adsorption pump (105) by the 23 hand stop valve (614), the 6th low-reading thermometer (611) exports; LIULUTONG is crossed the 24 hand stop valve (615), the 7th low-reading thermometer (612) is connected to the little tube outlet of plume adsorption pump (105); Described 25 hand stop valves (618) link to each other with the 4th remote pressure gauge (619), the 4th on-the-spot tensimeter (620); The 6th pneumatic control valve (633) one ends are by the straight-through atmosphere of pipeline, the other end is connected with four road pipelines respectively after connecting the 8th low-reading thermometer (632), the 11 low-temperature safety valve (631), the 32 manual stop valve (630), the tenth low-temperature safety valve (629), the 31 manual stop valve (628), the 9th low-temperature safety valve (627) in turn by pipeline, and four road pipelines are connected to gate liquid nitrogen heat sink (106), the anterior liquid nitrogen heat sink (107) of cabin body, body rear portion, cabin liquid nitrogen heat sink (108), end socket liquid nitrogen heat sink (109) respectively; Outlet discharge pipe by the 27 hand stop valve (622) that the discharge pipe of the outlet of gate liquid helium heat sink (101) is heat sink with all the other liquid heliums and plume adsorption pump (105) is communicated with; By the 28 hand stop valve (623), the 8th low-temperature safety valve (624), the 30 hand stop valve (626) is heat sink with each liquid helium, the outlet discharge pipe of plume adsorption pump and each liquid nitrogen heat sink is communicated with the formation pipe network system, concrete connected mode is: the 28 hand stop valve (623) one ends are communicated with plume adsorption pump (105) outlet discharge pipe by pipeline, the other end connects the 8th low-temperature safety valve (624) in turn by pipeline, the 30 hand stop valve (626) is connected between the 31 manual stop valve (628) and the tenth low-temperature safety valve (629) on the pipeline, the 28 hand stop valve (623), require to close simultaneously or open simultaneously during the 30 hand stop valve (626) operation; The 8th low-temperature safety valve (624) is installed on the pipeline between the 28 hand stop valve (623) and the 30 hand stop valve (626); The 29 hand stop valve (625) one ends are connected between the 28 hand stop valve (623) and the 30 hand stop valve (626), and the other end leads directly to atmosphere; Pipeline between the 6th pneumatic control valve (633) and the 11 low-temperature safety valve (631) links to each other with the pneumatic stopping valve (201) in the liquid nitrogen supply system (200); The 6th low-temperature safety valve (616) is installed on the 21 manual stop valve (615) entrance pipe;
Subcooler system (300) is used for the liquid nitrogen refrigerating cooling that each liquid nitrogen heat sink of subtend is carried, make the gas nitrogen liquefaction that contains in the liquid nitrogen of carrying, comprise subcooler (316) and the 33 hand stop valve (301), the 34 hand stop valve (302), the 35 hand stop valve (305), the 36 hand stop valve (311), the 37 hand stop valve (312), the 38 hand stop valve (314), the 39 hand stop valve (315), the 9th low-reading thermometer (303), the tenth low-reading thermometer (313), the 7th pneumatic control valve (304), the 5th remote pressure gauge (306), the 6th remote pressure gauge (308), the 5th on-the-spot tensimeter (307), the 6th on-the-spot tensimeter (309) and second liquid level gauge (310); Wherein, the 33 hand stop valve (301) is feed liquor and the make-up valve of subcooler system (300), liquid nitrogen transfer pipeline in one end and the liquid nitrogen supply system (200) between the first low-temperature safety valve (229), the 6th hand stop valve (224) is communicated with, and the other end is communicated with by the supercooling tube road liquid feeding end in pipeline and subcooler (316) main body; The 9th low-reading thermometer (303) is arranged on porch, supercooling tube road; The 7th pneumatic control valve (304) one ends are communicated with liquid nitrogen transfer pipeline between the 6th hand stop valve (224) by the first low-temperature safety valve (229) in pipeline and the liquid nitrogen supply system (200); Second liquid level gauge (310) is installed on the subcooler (316); The 5th remote pressure gauge (306) is connected to exit, supercooling tube road with the 5th on-the-spot tensimeter (307) by the 35 hand stop valve (305); In subcooler (316) main body the 36 hand stop valve (311) is installed; On subcooler (316) main body, the 37 hand stop valve (312) is installed also; The 39 hand stop valve (315) is connected to exit, supercooling tube road by pipeline, and the 39 hand stop valve (315) also is connected in liquid nitrogen pump system (400) and the heat sink export pipeline system (600) between the 11 low-temperature safety valve (631) and the 32 manual stop valve (630) on the pipeline by pipeline; The 38 hand stop valve (314) one ends are connected on the 37 hand stop valve (312) and the intersubjective pipeline of subcooler (316) by pipeline, and the other end is connected on the pipeline between the 39 hand stop valve (315) and the heat sink export pipeline system 600; The tenth low-reading thermometer (313) is arranged on exit, supercooling tube road; The 34 hand stop valve (302) one ends are communicated with porch, supercooling tube road by pipeline, and the other end is connected in the heat sink export pipeline system (600) on the pipeline between the 32 manual stop valve (630) and the tenth low-temperature safety valve (629) by pipeline;
Liquid nitrogen pump system (400) comprises fine filter (401), liquid nitrogen pump (407), the 40 hand stop valve (403), the 41 manual stop valve (406), the 42 manual stop valve (408), the 43 hand stop valve (409), the 44 hand stop valve (410), the 45 hand stop valve (413), the 12 low-temperature safety valve (402), the 13 low-temperature safety valve (416), the 11 low-reading thermometer (411), the 7th remote pressure gauge (404), the 8th remote pressure gauge (414), the 7th on-the-spot tensimeter (405), the 8th on-the-spot tensimeter (415) and low temperature flowmeter (412); Wherein, fine filter (401) is installed in liquid nitrogen pump system (400) entrance pipe place; Fine filter (401) one ends link to each other with the 40 hand stop valve (315) in the subcooler system (300) by pipeline; Fine filter (401) other end is equipped with triplate line, the pipeline of leading up to connects the 41 manual stop valve (406), liquid nitrogen pump (407), the 43 hand stop valve (409) in turn, another road connects the 44 hand stop valve (410) by pipeline, and the two-way pipeline is connected in parallel to low temperature flowmeter (412) porch by triplate line; The 42 manual stop valve (408) one ends are communicated with liquid nitrogen pump (407) export pipeline by pipeline, and the other end is communicated with atmosphere; The 7th remote pressure gauge (404) and the 7th on-the-spot tensimeter (405) with after the 40 hand stop valve (403) links to each other, are installed in liquid nitrogen pump (407) porch by threeway; The 8th remote pressure gauge (414) and the 8th on-the-spot tensimeter (415) are installed in liquid nitrogen pump (407) exit, link to each other with the 45 hand stop valve (413) by threeway; The 11 low-reading thermometer (411) is installed on the export pipeline of liquid nitrogen pump (407); Low temperature flowmeter (412) is positioned on the export pipeline of liquid nitrogen pump (407); The 12 low-temperature safety valve (402), the 13 low-temperature safety valve (416) are installed in respectively on liquid nitrogen pump (407) the entrance and exit pipeline.
2. a kind of two heat sink enclosed liquid nitrogen induction system according to claim 1 is characterized in that: described gate liquid nitrogen heat sink (106), the gate liquid helium is heat sink (101), end socket liquid nitrogen heat sink (109) is the circular arc disk construction with end socket liquid helium heat sink (104).
3. a kind of two heat sink enclosed liquid nitrogen induction system according to claim 1, it is characterized in that: the anterior liquid nitrogen heat sink (107) of cabin body, the anterior liquid helium heat sink (102) of cabin body, body rear portion, cabin liquid nitrogen heat sink (108) are columnar structured with body rear portion, cabin liquid helium heat sink (103).
4. a kind of two heat sink enclosed liquid nitrogen induction system according to claim 1, it is characterized in that: be in series with the 3rd hand stop valve (216), the 4th hand stop valve (218) on the pipeline of described low-temperature solenoid valve (217) place, the 3rd hand stop valve (216) lays respectively at low-temperature solenoid valve (217) two ends with the 4th hand stop valve (218).
5. a kind of two heat sink enclosed liquid nitrogen induction system according to claim 1, it is characterized in that: the supply gas pressure of described carburetor (220) is at 0.4～0.6MPa.
6. a kind of two heat sink enclosed liquid nitrogen induction system according to claim 1 is characterized in that: be in series with first hand stop valve (212) on the pipeline of pneumatic stopping valve (211) place.
7. a kind of two heat sink enclosed liquid nitrogen induction system according to claim 1, it is characterized in that: described the 36 hand stop valve (311) is installed in subcooler (316) main body top.
8. a kind of two heat sink enclosed liquid nitrogen induction system according to claim 1, it is characterized in that: described the 37 hand stop valve is installed in subcooler (316) bottom part body.
9. based on a kind of engine plume testing method of operating of the described a kind of two heat sink enclosed liquid nitrogen induction systems of claim 1, it is characterized in that: comprise following step:
Step 1: liquid nitrogen storage (233) liquid nitrogen filling;
Open the 9th hand stop valve (228) and finish the liquid nitrogen filling of liquid nitrogen storage (233);
Step 2: subcooler (316) main body liquid nitrogen filling;
Open the 5th hand stop valve (223), the 7th pneumatic control valve (304) and the 36 hand stop valve (311) successively and finish the liquid nitrogen filling of liquid nitrogen subcooler (316) main body;
Step 3: each liquid nitrogen heat sink precooling;
Open the 33 hand stop valve (301) successively, the 44 hand stop valve (410), the 16 hand stop valve (514), the 17 hand stop valve (515), the 18 hand stop valve (516), the 19 hand stop valve (517), the 31 manual stop valve (628), the 32 manual stop valve (630), the 6th pneumatic control valve (633), make liquid nitrogen enter into subcooler (316) internal pipeline, utilizing the liquid nitrogen in subcooler (316) main body is by the liquid nitrogen cooling in subcooler (316) internal pipeline, liquid nitrogen after the cooling enters into liquid nitrogen pump system (400) with subcooler (316) export pipeline, after entering into liquid nitrogen induction system (500) at last, realize gate liquid nitrogen heat sink (106), the anterior liquid nitrogen heat sink (107) of cabin body, body rear portion, cabin liquid nitrogen heat sink (108), end socket liquid nitrogen heat sink (109) carries out precooling;
Step 4: each liquid helium is heat sink and plume adsorption pump (105) precooling;
Each liquid helium is heat sink and pre-each liquid nitrogen heat sink precooling of cold-peace of plume adsorption pump (105) is carried out simultaneously, open the 6th hand stop valve (224) successively, the tenth hand stop valve (501), the 11 manual stop valve (502), first pneumatic control valve (504), second pneumatic control valve (510), the 3rd pneumatic control valve (511), the 4th pneumatic control valve (512), the 5th pneumatic control valve (513), the 27 hand stop valve (622), the 28 hand stop valve (623), the 30 hand stop valve (626) is to gate liquid helium heat sink (101), the anterior liquid helium heat sink (102) of cabin body, body rear portion, cabin liquid helium heat sink (103), the end socket liquid helium is heat sink (104), plume adsorption pump (105) carries out precooling;
Step 5: heat-sink system (100) adjustment;
Regulate gate liquid nitrogen heat sink (106) temperature by the 16 hand stop valve (514), utilize the 17 hand stop valve (515) to regulate anterior liquid nitrogen heat sink (107) temperature of cabin body, utilize the 18 hand stop valve (516) to regulate body rear portion, cabin liquid nitrogen heat sink (108) temperature, utilize the 19 hand stop valve (517) to regulate end socket liquid nitrogen heat sink (109) temperature, utilize first pneumatic control valve (504) to regulate gate liquid helium heat sink (101) temperature, second pneumatic control valve (510) is regulated anterior liquid helium heat sink (102) temperature of cabin body, utilize the 3rd pneumatic control valve (511) to regulate body rear portion, cabin liquid helium heat sink (103) temperature, utilize the 4th pneumatic control valve (512) to regulate end socket liquid helium heat sink (104) temperature, utilize five pneumatic control valves (513), the 22 manual stop valve (613), the 23 hand stop valve (614), the 24 hand stop valve (615) is regulated plume adsorption pump (105) temperature, guarantees that each is heat sink even with plume adsorption pump (105) temperature;
Step 6: the closed cycle of each liquid nitrogen heat sink;
Treat each liquid nitrogen heat sink, after each liquid helium is heat sink and plume adsorption pump (105) temperature is down to liquid nitrogen temperature 77K, each liquid nitrogen heat sink can enter closed cycle, at first, open the 41 manual stop valve (406), the 42 manual stop valve (408) is to the logical liquid nitrogen precooling of liquid nitrogen pump (407), when there is the liquid nitrogen ejection in the 42 manual stop valve (408) exit, close the 42 manual stop valve (408), the 44 hand stop valve (410), open the 43 hand stop valve (409) simultaneously, finish the startup of liquid nitrogen pump (407), secondly, close the 32 manual stop valve (630), simultaneously open the 34 hand stop valve (302) gradually, finish each liquid nitrogen heat sink by the transition of open type precooling to closed cycle;
Step 7: stop the liquid nitrogen supply of the heat sink and plume adsorption pump (105) of each liquid helium;
After treating that each liquid nitrogen heat sink enters closed cycle fully, close the liquid nitrogen conveying that the tenth hand stop valve (501) stops and plume adsorption pump (105) heat sink to each liquid helium.
10. carrying out the satellite thermal vacuum test method of operating based on described a kind of two a kind of of heat sink enclosed liquid nitrogen induction system of claim 1, it is characterized in that: comprise following step:
Step 1: liquid nitrogen storage (233) liquid nitrogen filling;
Open the 9th hand stop valve (228) and finish the liquid nitrogen filling of liquid nitrogen storage (233);
Step 2: subcooler (316) main body liquid nitrogen filling;
Open the 5th hand stop valve (223), the 6th pneumatic control valve 304 and the 36 hand stop valve (311) successively and finish the liquid nitrogen filling of liquid nitrogen subcooler (316) main body;
Step 3: each liquid helium is heat sink and plume adsorption pump (105) precooling;
Open the 33 hand stop valve (301) successively, the 44 hand stop valve (410), the 12 manual stop valve (505), the 13 hand stop valve (506), first pneumatic control valve (504), second pneumatic control valve (510), the 3rd pneumatic control valve (511), the 4th pneumatic control valve (512), the 5th pneumatic control valve (513), the 27 hand stop valve (622), the 28 hand stop valve (623), the 30 hand stop valve (626), the 32 manual stop valve (630), the 6th pneumatic control valve (633), make liquid nitrogen enter into subcooler (316) internal pipeline, utilizing the liquid nitrogen in subcooler (316) main body is by the liquid nitrogen cooling in subcooler (316) internal pipeline, liquid nitrogen after the cooling enters into liquid nitrogen pump system (400) with subcooler (316) export pipeline, after entering into liquid nitrogen induction system (500) at last, realize gate liquid helium heat sink (101), the anterior liquid helium heat sink (102) of cabin body, body rear portion, cabin liquid helium heat sink (103), the end socket liquid helium is heat sink (104), plume adsorption pump (105) carries out precooling;
Step 4: each liquid helium is heat sink and the adjustment of plume adsorption pump (105);
Each liquid helium is heat sink and plume adsorption pump (105) precooling process in, regulate each heat sink cooling rate by the liquid nitrogen supply, regulate gate liquid helium heat sink (101) temperature by first pneumatic control valve (504), second pneumatic control valve (510) is regulated anterior liquid helium heat sink (102) temperature of cabin body, utilize the 3rd pneumatic control valve (511) to regulate body rear portion, cabin liquid helium heat sink (103) temperature, utilize the 4th pneumatic control valve (512) to regulate end socket liquid helium heat sink (104) temperature, utilize five pneumatic control valves (513), the 22 manual stop valve (613), the 23 hand stop valve (614), the 24 hand stop valve (615) is regulated plume adsorption pump (105) temperature, guarantees that each liquid helium heat becomes even with plume adsorption pump (105) temperature;
Step 5: each liquid helium is heat sink and the closed cycle of plume adsorption pump (105);
After treating that heat sink and plume adsorption pump (105) temperature of each liquid helium is down to liquid nitrogen temperature 77K, each liquid nitrogen heat sink can enter closed cycle, at first, open the 41 manual stop valve (406), the 42 manual stop valve (408) is to the logical liquid nitrogen precooling of liquid nitrogen pump (407), when there is the liquid nitrogen ejection in the 42 manual stop valve (408) exit, close the 42 manual stop valve (408), the 44 hand stop valve (410), open the 43 hand stop valve (409) simultaneously, finish the startup of liquid nitrogen pump (407), secondly, close the 32 manual stop valve (630), simultaneously open the 34 hand stop valve (302) gradually, finish each liquid nitrogen heat sink by the transition of open type precooling to closed cycle.
CN 201210057530 2012-03-07 2012-03-07 Double-heat-sink closed liquid nitrogen transporting system and working method thereof Expired - Fee Related CN102606882B (en)

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CN 201210057530 CN102606882B (en) 2012-03-07 2012-03-07 Double-heat-sink closed liquid nitrogen transporting system and working method thereof

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