CN102941929A - Microgravity experiment system and experiment method for verifying fluid transmission performance of plate type storage box - Google Patents
Microgravity experiment system and experiment method for verifying fluid transmission performance of plate type storage box Download PDFInfo
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Abstract
The invention provides a microgravity experiment system and an experiment method for verifying the fluid transmission performance of a plate type storage box. The microgravity experiment system for verifying the fluid transmission performance of the plate type storage box comprises a filling liquid storage box model, a filled liquid storage box model, a self-locking valve, a self-locking valve controller, an image acquisition device, a deflation valve, a nitrogen bottle, an inflation valve, an air passage control desk, a liquid injection valve, a simulation liquid tank, a pipeline three-way valve and other components, wherein a drop tower double-chamber experiment module is used for measuring and verifying the transmission action of fluid in the plate type storage box and controlling the fluid transmission time; a ground filling and control module fills nitrogen gas into the filling liquid storage box model before a drop tower experiment and fills propellant simulation liquid; and after the experiment starts, the ground filling and control module and the tower double-chamber experiment module are disconnected. The experiment system and the experiment method have the advantages that the structure is compact, the self-locking valve is adopted for automatic control, the time coordination and matching with microgravity is strong, the occupied area is small, the leak tightness of a loop is good, the models are replaced easily, camera shooting and observation are convenient, and the like.
Description
Technical field
The present invention relates to the verification experimental verification technical field of Vane Type Tank fluid transmission performance under microgravity condition, can be applied to the Microgravity Falling Tower test of various Vane Type Tank scale models.
Background technology
The Eleventh Five-Year Plan period, finish spacecraft at the design effort of rail filling with the board-like surface tension propellant tank of 28L, made PM prototype model, carried out the ground demonstration test of propellant at the rail filling process.This Demonstrator Trials can only be verified the Local Property of board-like surface tension propellant tank, can't truly reflect it utilizes the surface tension convection body under space environment management, control and transmittability.Therefore, must carry out a large amount of microgravity tests, the Fluid Transport performance of board-like surface tension propellant tank is carried out in-depth study.
For the microgravity test environment, can provide by means such as the tower that falls, aircraft parabolic flight, space lift-launchs, wherein the aircraft parabolic flight can not provide higher Level of Microgravity, can only carry out some to the less demanding experimental investigation of microgravity condition; Carry in the space is to carry out the best means of microgravity test, but somewhat expensive, and chance is seldom; And drop tower test be owing to can provide higher Level of Microgravity, and testing expenses are lower, use scale model can remedy short defective of microgravity test time, become most important research means.Therefore from June, 2011, contract than design for the board-like surface tension propellant tank of 28L, adopt the method for drop tower test that tank scale model inner fluid transmission course has been carried out microgravity test research.
In order to realize the transmission of board-like surface tension propellant tank model inner fluid, built a kind of Fluid Transport pilot system that is formed by subscale test model, image collecting device, latching valve, nitrogen gas cylinder, gas circuit control desk and test pipeline etc., clear and definite overall plan and the function of pilot system summed up simple, reliable, the feasible microgravity test method that is applicable to Vane Type Tank Fluid Transport performance verification that drawn.Use this test method, finished the test of the board-like surface tension propellant tank scale model of 28L Fluid Transport characteristic and liquid level repositioning process, verified fluid management and the transmittability of Vane Type Tank under the microgravity environment.
Abroad just the plank frame Fluid Transport performance under the microgravity environment is studied since the seventies in last century, dropped into huge man power and material, carry out a large amount of relevant microgravity tests, utilized the means such as drop tower test, aircraft parabolic flight test, space lift-launch test to obtain numerous achievements in research.The T.P.Yeh of U.S. Ford Aerospace company is studied the plank frame performance to combination in 1987, by the Microgravity Falling Tower experimental investigation Combination property of its convection cell management, comprise that fluid verifies the climbing ability of plate type part under the microgravity effect, and liquid plate type part in repositioning process suppresses the ability of liquid sloshing, test is carried out at the tower that falls of Santa Clara university, article is " M.K.Reagan, W.J.Bowman.Analytical and experimental modeling of zero/low gravity fluid behavior.AIAA87-1865 "; The M.K.Reagan of Wright Air Development Centre and W.J.Bowman have studied the mobile transporting mechanism of channel form plate type part under microgravity environment in 1994, obtained the distributed in three dimensions of different moment fluids in groove by drop tower test, article is " M.K.Reagan, W.J.Bowman.Transient studies of G-induced capillary flow.Journal of Thermophysics and Heat Transfer.v13n4 1999 "; The right ang Chen of the Yon of Purdue university and Steven H.Collicott have carried out drop tower test research in 2004 to the surface tension driving stream between the cylindrical container wooden partition, obtained geometric parameter, angle of contact, fluid viscosity, roughness, the thickness of plate and the leaning angle of plate are on the impact of actuating speed, and the regularity of distribution of interface profile line on time and space conducted in-depth research, article is " Chen; Y; Weislogel M.M; Nardin C.L.Capillary-driven flows along rounded interior comers.Journal of Fluid Mechanics; Vol.566; 2006, p235-271 "; Carrying out repeatedly space lift-launch test aspect the board-like management devices development abroad, the FARE2 project is wherein typically arranged, VTRE project and NASA be fluid transmission performance Test item under a series of microgravity environments that international space station carries out, article is respectively " S.Dominick; J.Tegart.Orbital Test Results of a Vaned Liquid Acquisition Device.AIAA94-3027 ", " David J; Timothy A.Vented Tank Resupply Experiment-Flight Test Results.AIAA97-2815 ", " Mark M.Weislogel; Steven H.Collicott, et al.The Capillary Flow Experiments:Handheld Fluids Experiments for International Space Station.AIAA2004-1148 ".
Because development and the correlation test verification technique of the board-like management devices such as Vane Type Tank relate to national security, the country that has grasped this technology often carries out blockade on new techniques, the data that abroad can provide is very not comprehensive, can only play certain reference function, be detailed experiment system design and the verification experimental verification method mentioned in the related article of delivering, mechanism research to Vane Type Tank need to be built pilot system voluntarily, carry out a large amount of microgravity tests, sum up the microgravity test verification method, obtain the sufficient firsthand information, these basic datas can not obtain from foreign literature.
In sum, board-like surface tension propellant tank Fluid Transport performance test system and test method are to carry out the achievement of groping and summing up in " spacecraft rail loading technique research " problem process, whole system and test method all are brand-new, domestic do not have relevant document and data to use for reference, and seldom discloses the similar pilot system of careless mistake and test method abroad yet.In order to realize tank Fluid Transport performance verification, in conjunction with practice and the experience of production process, pilot system and the test method of board-like surface tension propellant tank Fluid Transport performance proposed first.
Summary of the invention
Technology of the present invention is dealt with problems and is: overcome the deficiencies in the prior art, a kind of board-like surface tension propellant tank Fluid Transport performance test system and test method are provided, can effectively verify fluid management and the transmittability of Vane Type Tank under the microgravity environment.
Technical solution of the present invention is: the microgravity test system of Vane Type Tank Fluid Transport performance verification comprises ground filling and control module and falls the two cabins of tower tentative module two parts;
The filling of described ground and control module are tower two cabins tentative module inflated with nitrogen and the filling propellant simulated solution of falling before drop tower test; The ground filling comprises nitrogen gas cylinder (7), air entraining valve (8), gas circuit control desk (9), charging valve (10) and simulated solution case (11) with control module; Nitrogen gas cylinder (7) connects successively by air entraining valve (8), gas circuit control desk (9); Simulated solution case (11) is connected 10 with charging valve) connect; Simulated solution case (11) inside is loaded with the propellant simulated solution; Air entraining valve (8) is used for control nitrogen source of the gas and opens and closes, gas circuit control desk (9) is in order to adjust the nitrogen amount that injects topping up tank model (1), by regulating charging valve (10) aperture, inject the propellant simulation liquid measure of topping up tank model (1) in order to restriction;
The described two cabins of the tower tentative module that falls, be used for measuring and checking by the Fluid Transport behavior in the topping up tank model (2), the control Fluid Transport time; The two cabins of the tower that falls tentative module comprises topping up tank model (1), by topping up tank model (2), latching valve (3), latching valve controller (4), image collecting device (5), aie escape valve (6) and pipeline threeway (12); Aie escape valve (6) with 3. be connected by the gas port of topping up tank model (2); The two ends of latching valve (3) respectively with by the liquid mouth of topping up tank model (2) 4. with pipeline threeway be connected 12) the second port 6. be connected, be used for fluid transport amount in the pilot piping; 2. the 3rd port of pipeline threeway (12) 7. is connected with the liquid mouth of topping up tank model (1); Described latching valve controller (4) is connected with latching valve (3), regulates the automatic switch time of latching valve (3) by latching valve controller (4) is set; Image collecting device (5) is positioned at by 5～10cm place, topping up tank model (2) dead ahead.
The microgravity test method of Vane Type Tank Fluid Transport performance verification comprises the following steps:
A. the microgravity test system with Vane Type Tank Fluid Transport performance verification connects according to the described mode of claim 1 respectively, then first port of charging valve (10) with pipeline threeway (12) 5. is connected;
B. open aie escape valve (6), by latching valve controller (4) latching valve (3) is opened;
C. to topping up tank model (1) with by the loading of topping up tank model (2) difference repropellenting simulated solution to 10%, disconnect first port of charging valve (10) and pipeline threeway (12) 5., the first port of pipeline threeway (12) is 5. sealed;
D. by latching valve controller (4) latching valve (3) cuts out;
E. the gas port of gas circuit control desk (9) with topping up tank model (1) 1. is connected, adds nitrogen for topping up tank model (1) by nitrogen gas cylinder (7), regulate gas circuit control desk (9) pressure valve, be pressurized to 0.01～0.05Mpa;
F. disconnect the gas port of gas circuit control desk (9) and topping up tank model (1) 1., and the gas port of topping up tank model (1) is 1. sealed;
G. adjust image collecting device (5), confirm illumination, shooting and data acquisition normal operation;
When h. the microgravity time arrives 1～1.2s, by latching valve controller (4) latching valve (3) is opened;
I. behind microgravity time arrival 2.8～3s, by latching valve controller (4) latching valve (3) cuts out;
J. behind microgravity time arrival 0.5～0.7s, microgravity test finishes.
Latching valve controller (4) opens latching valve (3) with the time of cutting out and must be complementary with the total microgravity of the tower time that falls among described step h and the i, can simulate Fluid Transport situation under the complete microgravity environment, guarantee to be under the complete microgravity condition through tank behind the step h, be in the topping up tank liquid level basicly stable after, begin to carry out the Fluid Transport performance test, certain period was closed latching valve (3) before microgravity finished, in order to realize the liquid experience complete agravity power in the tank model, the microgravity transmission, microgravity reorientation three phases, be convenient to like this record different phase Fluid Transport characteristic and Liquid reorientation process, also can prevent from behind the end of test being annotated in the case liquid backflow to the topping up tank by topping up, so that impact contains the extrusion efficiency performance perameter calculating of liquid tank.
The present invention's beneficial effect compared with prior art is:
(1) the present invention is according to Microgravity Falling Tower experimental investigation requirement, and appropriate design has also been built the model test system.This pilot system has compact conformation, it is little to take up room, loop seals good, the model displacement easily, shooting observes the advantages such as convenient.Can obtain fluid management ability and the Fluid Transport characteristic of all board-like surface tension propellant tank models, and the performance of tank is verified.
(2) the present invention adopts latching valve automatically to control, strong with microgravity matching time coordination, realize that the control of latching valve switch and microgravity process coordinating carry out, can realize ground filling and control system and the tower double-chamber system that falls disconnects in good time, also can prevent to be ensured board-like surface tension propellant tank Model Fluid transmission performance experimental safe, reliably carrying out to the topping up tank by liquid backflow in the topping up notes case behind the end of test.
(3) test method of the present invention's employing is reasonable, feasible, workable, can be applied to the Microgravity Falling Tower test of various Vane Type Tanks, also the propellant of applicable future space station or satellite is verified at the rail loading technique, can carry out verification experimental verification to the feasibility of board-like surface tension propellant tank repropellenting under the microgravity environment, Vane Type Tank limiting performance etc., promote the development at the rail loading technique.
Description of drawings
Fig. 1 is the structure principle chart of pilot system of the present invention;
Fig. 2 is the diagram of circuit of test method of the present invention.
The specific embodiment
The microgravity test system architecture principle of Vane Type Tank Fluid Transport performance verification of the present invention has been described such as Fig. 1.System of the present invention comprises topping up tank model 1, by topping up tank model 2, latching valve 3, latching valve controller 4, image collecting device 5, aie escape valve 6, nitrogen gas cylinder 7, air entraining valve 8, gas circuit control desk 9, charging valve 10 and simulated solution case 11, pipeline threeway 12.The concrete connection mode of system is as follows: adopt the high pressure gas pipeline that 1. nitrogen gas cylinder 7, air entraining valve 8, gas circuit control desk 9 are connected successively with the gas port of topping up tank model 1, air entraining valve 8 is in closed condition; Adopt the PVC liquid line that simulated solution case 11, charging valve 10 and topping up tank model are connected and connect successively, charging valve 10 is in closed condition; Latching valve 3 places topping up tank model 1 and by between the topping up tank model 2, adopts the PVC liquid line to connect, and simultaneously latching valve controller 4 is connected with latching valve 3, and its electric signal is controlled by computer program; Aie escape valve 8 with 3. be connected by the gas port of topping up tank model 2; Image collecting device 5 is fixed in by topping up tank model 2 dead aheads, and distance is in and is beneficial to the position that Fluid Transport is taken in focusing.Test adopts absolute ethyl alcohol as the propellant simulated solution, use nitrogen as pressure gas, the functions such as the filling of propellant simulated solution, discharging and storage can be realized, the verification experimental verification of flow characteristic in the Fluid Transport process can be carried out between the behavior of Vane Type Tank plate inner fluid, Liquid reorientation process and the tank.
Before on-test, be topping up tank model 1 inflated with nitrogen and filling propellant simulated solution by ground filling and control module, after the beginning to be tested, ground filling and control module and the two cabins of the tower tentative module that falls disconnected; In the process of the test, the two cabins of the tower tentative module that falls is used for measuring and checking Vane Type Tank inner fluid transport behavior, the control Fluid Transport time.
In order to simulate Fluid Transport situation under the complete microgravity environment, must set a rational microgravity time, tank is under the complete microgravity condition, namely in the topping up tank liquid level basicly stable after, begin to carry out the Fluid Transport performance test.Total moon microgravity test time that can provide owing to hundred meters Microgravity Falling Towers is 3.5s, determined that through several times test the time of latching valve opening and closing is respectively 1～1.2s and 2.8～3s, be when the microgravity time arriving 1～1.2s, by the program command that pre-establishes, latching valve 3 is opened, begin to carry out annotating under the microgravity environment, behind microgravity time arrival 2.8～3s, by the program command that pre-establishes, close latching valve 3, the Fluid Transport process finishes, the follow-up liquid level microgravity repositioning process that enters.
Fig. 2 has illustrated the implementation procedure of test method of the present invention, concrete steps are as follows: before on-test, should be ready to topping up tank model 1, by test equipments such as topping up tank model 2, latching valve 3, latching valve controller 4, image collecting device 5, aie escape valve 6, nitrogen gas cylinder 7, air entraining valve 8, gas circuit control desk 9, charging valve 10, simulated solution case 11 and pipeline threeways 12, adopt respectively the high pressure gas pipeline with the PVC liquid line gas circuit to be connected with the liquid road, concrete method of attachment as mentioned before, ground filling and control module and the tower pair cabins tentative module that falls are built and are finished; By latching valve controller 4 latching valve 3 is opened, opened simultaneously by the aie escape valve 6 of topping up tank model 2 one sides, disconnect the gas port connecting line of filling tank model; Give topping up tank model and by topping up tank model 2 loading of liquid feedings to 10% respectively, disconnect charging line, 2. the liquid mouth of topping up tank model 1 is sealed; By the latching valve controller latching valve cuts out, disconnect the liquid mouth of topping up tank model 2.; Connect the aerating pipeline, add nitrogen for topping up tank model 1, regulate the pressure tabular value of gas circuit control desk 9, be pressurized to 0.01～0.05Mpa, should slowly open first the minimum pressure control cock during pressurization, slowly be adjusted to required pressure; 1. the gas port of sealing topping up tank model 1 makes the tower double-chamber system to be in the loop air-tight state; Adjust the position of image collecting device 5,4 debugging focal lengths are confirmed illumination, shooting and data acquisition normal operation; Discharge the two cabins of tower pilot system, begin to record the microgravity time; The microgravity time opens latching valve 3 by latching valve controller 4 when arriving 1～1.2s scope, begins to carry out annotating under the microgravity environment; The microgravity time by the program command that pre-establishes, is closed latching valve 3 when arriving 2.8～3s scope; Approximately behind 0.5s～0.7s, microgravity test finishes.
The unspecified part of the present invention belongs to general knowledge as well known to those skilled in the art.
Claims (3)
1. the microgravity test system of Vane Type Tank Fluid Transport performance verification is characterized in that: comprise ground filling and control module and fall the two cabins of tower tentative module two parts;
The filling of described ground and control module are tower two cabins tentative module inflated with nitrogen and the filling propellant simulated solution of falling before drop tower test; The ground filling comprises nitrogen gas cylinder (7), air entraining valve (8), gas circuit control desk (9), charging valve (10) and simulated solution case (11) with control module; Nitrogen gas cylinder (7) connects successively by air entraining valve (8), gas circuit control desk (9); Simulated solution case (11) is connected 10 with charging valve) connect; Simulated solution case (11) inside is loaded with the propellant simulated solution; Air entraining valve (8) is used for control nitrogen source of the gas and opens and closes, gas circuit control desk (9) is in order to adjust the nitrogen amount that injects topping up tank model (1), by regulating charging valve (10) aperture, inject the propellant simulation liquid measure of topping up tank model (1) in order to restriction;
The described two cabins of the tower tentative module that falls, be used for measuring and checking by the Fluid Transport behavior in the topping up tank model (2), the control Fluid Transport time; The two cabins of the tower that falls tentative module comprises topping up tank model (1), by topping up tank model (2), latching valve (3), latching valve controller (4), image collecting device (5), aie escape valve (6) and pipeline threeway (12); Aie escape valve (6) with 3. be connected by the gas port of topping up tank model (2); The two ends of latching valve (3) respectively with by the liquid mouth of topping up tank model (2) 4. with pipeline threeway be connected 12) the second port 6. be connected, be used for fluid transport amount in the pilot piping; 2. the 3rd port of pipeline threeway (12) 7. is connected with the liquid mouth of topping up tank model (1); Described latching valve controller (4) is connected with latching valve (3), regulates the automatic switch time of latching valve (3) by latching valve controller (4) is set; Image collecting device (5) is positioned at by 5～10cm place, topping up tank model (2) dead ahead.
2. the microgravity test method of Vane Type Tank Fluid Transport performance verification is characterized in that comprising the following steps:
A. the microgravity test system with Vane Type Tank Fluid Transport performance verification connects according to the described mode of claim 1 respectively, then first port of charging valve (10) with pipeline threeway (12) 5. is connected;
B. open aie escape valve (6), by latching valve controller (4) latching valve (3) is opened;
C. to topping up tank model (1) with by the loading of topping up tank model (2) difference repropellenting simulated solution to 10%, disconnect the first port of charging valve (10) and pipeline threeway (12) 5., the first port of pipeline threeway (12) is 5. sealed;
D. by latching valve controller (4) latching valve (3) cuts out;
E. the gas port of gas circuit control desk (9) with topping up tank model (1) 1. is connected, adds nitrogen for topping up tank model (1) by nitrogen gas cylinder (7), regulate gas circuit control desk (9) pressure valve, be pressurized to 0.01～0.05Mpa;
F. disconnect the gas port of gas circuit control desk (9) and topping up tank model (1) 1., and the gas port of topping up tank model (1) is 1. sealed;
G. adjust image collecting device (5), confirm illumination, shooting and data acquisition normal operation;
When h. the microgravity time arrives 1～1.2s, by latching valve controller (4) latching valve (3) is opened;
I. behind microgravity time arrival 2.8～3s, by latching valve controller (4) latching valve (3) cuts out;
J. behind microgravity time arrival 0.5～0.7s, microgravity test finishes.
3. the microgravity test method of Vane Type Tank Fluid Transport performance verification according to claim 2, it is characterized in that: latching valve controller (4) opens latching valve (3) with the time of cutting out and must be complementary with the total microgravity of the tower time that falls among described step h and the i, can simulate Fluid Transport situation under the complete microgravity environment, guarantee to be under the complete microgravity condition through tank behind the step h, be in the topping up tank liquid level basicly stable after, begin to carry out the Fluid Transport performance test, certain period was closed latching valve (3) before microgravity finished, in order to realize the liquid experience complete agravity power in the tank model, the microgravity transmission, microgravity reorientation three phases, be convenient to like this record different phase Fluid Transport characteristic and Liquid reorientation process, also can prevent from behind the end of test being annotated in the case liquid backflow to the topping up tank by topping up, so that impact contains the extrusion efficiency performance perameter calculating of liquid tank.
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| CN103950554B (en) * | 2014-04-10 | 2016-05-04 | 中国运载火箭技术研究院 | A kind of spacecraft propulsion agent loading system and method in-orbit |
| CN103950554A (en) * | 2014-04-10 | 2014-07-30 | 中国运载火箭技术研究院 | Spacecraft propellant in-orbit filling system and spacecraft propellant in-orbit filling method |
| CN106151879A (en) * | 2015-04-03 | 2016-11-23 | 北京强度环境研究所 | Multi-functional analog liquid filling pressurized equipment |
| CN105065898A (en) * | 2015-07-24 | 2015-11-18 | 北京控制工程研究所 | Through-type on-orbit refueling system of satellite propulsion system |
| CN106762224A (en) * | 2016-11-21 | 2017-05-31 | 北京控制工程研究所 | A kind of Large Copacity half manages formula surface tension propellant tank balance charging method in parallel |
| CN108146663A (en) * | 2017-12-07 | 2018-06-12 | 北京空间技术研制试验中心 | Analogue simulation pilot system is added in spacecraft propulsion agent |
| CN108146663B (en) * | 2017-12-07 | 2019-12-03 | 北京空间技术研制试验中心 | Analogue simulation pilot system is added in spacecraft propulsion agent |
| CN108195608A (en) * | 2018-02-13 | 2018-06-22 | 北京控制工程研究所 | A kind of Vane Type Tank ground propellant big flow repeats plus discharge method and control system |
| CN108854166A (en) * | 2018-05-28 | 2018-11-23 | 西安交通大学 | A kind of space liquid acquisition device based on the linkage of metal mesh curtain pressure at both sides |
| CN110901965A (en) * | 2019-11-12 | 2020-03-24 | 中国科学院空间应用工程与技术中心 | Guide control device and method for microgravity tower falling |
| CN110901965B (en) * | 2019-11-12 | 2021-06-29 | 中国科学院空间应用工程与技术中心 | Guide control device and method for microgravity tower falling |
| CN113740029A (en) * | 2021-08-31 | 2021-12-03 | 北京宇航系统工程研究所 | Rocket tank propellant flow field visualization test verification system and test method |
| CN114112307A (en) * | 2021-12-27 | 2022-03-01 | 中国科学院力学研究所 | Foundation simulation test method for propellant management in microgravity-variable speed environment |
| CN114324332A (en) * | 2021-12-27 | 2022-04-12 | 中国科学院力学研究所 | Space fluid management test device in microgravity-variable force environment |
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