CN103499427A - Alcohol/kerosene system of vacuum plume effect experiment system - Google Patents
Alcohol/kerosene system of vacuum plume effect experiment system Download PDFInfo
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- CN103499427A CN103499427A CN201310451525.2A CN201310451525A CN103499427A CN 103499427 A CN103499427 A CN 103499427A CN 201310451525 A CN201310451525 A CN 201310451525A CN 103499427 A CN103499427 A CN 103499427A
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Abstract
The invention discloses an alcohol/kerosene system of a vacuum plume effect experiment system. The alcohol/kerosene system comprises a high-pressure nitrogen path, a commanding/replacing air path, a low-pressure nitrogen path, an alcohol path and a kerosene path. During a higher-pressure and larger-flow experiment, a working medium is boosted by directly utilizing an air regulation type pressure reducer, so that the pressure and flow responding speed of the working medium is higher; during a lower-pressure and small-flow experiment, the working medium is boosted by utilizing a pressure storage buffering tank matched with the air regulation type pressure reducer, so that the pressure and flow supplied by the working medium are more accurate, and small and mini flow experiments are especially suitable; therefore the pressure regulation range of the system is wide, and the suitability is strong. According to the alcohol/kerosene system of the vacuum plume effect experiment system, the high-pressure nitrogen path provides the air source for the air regulation type pressure reducer, and also provides a displacement function for the system; before the system feeds the working medium, the air in the pipeline is replaced by nitrogen, so that the safety accident caused by the reaction of the working medium and the air in the pipeline is avoided, the system is simplified, and the safety is improved.
Description
Technical field
The present invention relates to a kind of Vacuum Plume effect experiment system alcohol/kerosene system, belong to fluid pressure control technology field.
Background technology
The penniform high-speed and high-temperature jet flow produced when engine is worked under vacuum environment is called plume.Plume can produce aerodynamic effect, Aerodynamic Heating effect, polluting effect, galvanomagnetic effect etc. to spacecraft, is referred to as the plume effect, and the plume effect can be brought impact to the aerial mission of spacecraft.Experimental study to the plume effect comprises space lift-launch test and ground simulation test.It is true and reliable that test figure is carried in space, but experimentation cost is high, the cycle is long, number of times is few, obtains data volume limited.Ground simulation test system Construction one-time investment is large, and the single test cost is low, can repeat the test of different operating modes and different conditions, obtains great number tested data.Therefore, ground simulation test becomes the first-selection of plume effect test research.
The Vacuum Plume effect experiment system that work office of national defence section in 2007 project verification, BJ University of Aeronautics & Astronautics invest to build is the ground simulation system that the domestic seat of honour is specifically designed to the research of plume effect test.By using actual engine or compression ratio engine to carry out fire trial in vacuum chamber, measure the Vacuum Plume parameters, carry out the plume effect study.The working medium storage and supply system is as one of important subsystem that forms the Vacuum Plume pilot system, and effect is that incendiary agent and the oxygenant of required pressure and flow are provided for the normal operation of engine, and realizes the functions such as supercharging, blowing, displacement.Wherein, alcohol, kerosene system are one of critical systems of working medium storage and supply system, be mainly for the Vacuum Plume effect test provide pressure accurately, stability of flow, safe and reliable alcohol or kerosene working medium, the pressure range of adjustment is large, and can remote monitoring line pressure, by-pass valve control open and close, guarantee security and applicability simultaneously.
The current domestic alcohol that the is specifically designed to the Vacuum Plume effect test/kerosene system that there is no, existing engine test alcohol or kerosene system are mainly that the engine test for carrying out in atmospheric environment provides alcohol or kerosene working medium, general is all certain model or task particular design, the pressure that system provides is higher, flow is larger, is not suitable for the low-pressure low flow engine of plume effect test rail control used or contracting ratio; And the characteristics of Vacuum Plume effect study are multitask, multi-state, the object of research comprises various rail controls or compression ratio engine, although the pressure absolute value is lower, but range of adjustment is larger, therefore, need the design highly versatile, can meet the disparity items demand, be applicable to the alcohol of Vacuum Plume effect test/the kerosene system.
Summary of the invention
To the objective of the invention is in order addressing the above problem, to propose a kind of Vacuum Plume effect experiment system alcohol/kerosene system, for Vacuum Plume effect experiment system provide pressure accurately, stability of flow, safe and reliable alcohol or kerosene working medium.
A kind of Vacuum Plume effect experiment system alcohol/kerosene system, comprise elevated pressure nitrogen gas circuit, commander/displacement gas circuit, low pressure nitrogen gas circuit, alcohol road and kerosene road;
The elevated pressure nitrogen gas circuit comprises high pressure admission hand valve, blowout-back pressure gauge and pressure transducer and high pressure filter;
High pressure admission hand valve inlet connects the high pressure nitrogen source of the gas, and outlet connects high pressure filter; Blowout-back pressure gauge and pressure transducer thereof are connected on the pipeline between high pressure admission hand valve and high pressure filter; The high pressure filter outlet connects the entrance of decompressor and commander's air inlet hand valve;
Commander/displacement gas circuit comprises commander's air inlet hand valve, venting hand valve, commander's throttling valve, commander's surge tank, commanded pressure table;
Commander's air inlet hand valve outlet port connects the entrance of commander's throttling valve and venting hand valve by threeway; The outlet of commander's throttling valve connects commander's gas air intake opening of commanding surge tank, commanded pressure table P2 and decompressor by four-way; Venting hand valve outlet port connects the nitrogen outlet of releasing;
The low pressure nitrogen gas circuit comprises decompressor, pressure accumulation air inlet hand valve, pressure accumulation surge tank, low pressure gauge and pressure transducer thereof, low-pressure safety valve, low pressure venting hand valve, alcohol supercharging hand valve, alcohol pressure release hand valve, kerosene supercharging hand valve, kerosene pressure release hand valve;
Decompressor JY outlet connects respectively the entrance of pressure accumulation air inlet hand valve, low pressure gauge and pressure transducer thereof, low-pressure safety valve, low pressure venting hand valve, alcohol supercharging hand valve, kerosene supercharging hand valve by 5 threeways; Pressure accumulation air inlet hand valve outlet port connects the pressure accumulation surge tank; Alcohol supercharging hand valve outlet port connects respectively the entrance of alcohol pressure release hand valve and alcohol storage tank by threeway; Kerosene supercharging hand valve outlet port connects respectively the entrance of kerosene pressure release hand valve and kerosene storage tank by threeway; The outlet of low-pressure safety valve, low pressure venting hand valve, alcohol pressure release hand valve, kerosene pressure release hand valve connects the nitrogen outlet of releasing;
The alcohol road comprises alcohol pouring hand valve, alcohol storage tank, alcohol liquid level gauge hand valve, alcohol liquid level gauge, alcohol temperature sensor, the preposition hand valve of alcohol, alcohol pipe filter, alcohol pneumatic valve, alcohol operation solenoid valve, the alcohol hand valve of releasing;
Alcohol pouring hand valve entrance connects the alcohol filler, and outlet connects the alcohol storage tank; Alcohol tank sidewall bottom has a hole, connects alcohol liquid level gauge hand valve inlet, and liquid level gauge hand valve outlet port connects the alcohol liquid level gauge; The alcohol storage tank exports the be linked in sequence preposition hand valve of alcohol, alcohol pipe filter, connects the alcohol pneumatic valve; Pipeline between the preposition hand valve of alcohol storage tank and alcohol arranges the alcohol temperature sensor; Alcohol operation electromagnetic valve entrance attended operation nitrogen inlet, outlet connects the operation gas entrance of alcohol pneumatic valve by two pipes, control respectively the opening and closing of pneumatic valve; Alcohol pneumatic valve outlet connects alcohol release hand valve and test bay alcohol road by threeway; The alcohol hand valve outlet port of releasing connects the alcohol outlet of releasing;
The kerosene road comprises kerosene pouring hand valve, kerosene storage tank, kerosene liquid level gauge hand valve, kerosene liquid level gauge, kerosene temperature sensor, the preposition hand valve of kerosene, kerosene pipe filter, kerosene pneumatic valve, operated with kerosene solenoid valve, the kerosene hand valve of releasing;
Kerosene pouring hand valve entrance connects the kerosene filler, and outlet connects the kerosene storage tank; Kerosene tank sidewall bottom has a hole, connects kerosene liquid level gauge hand valve inlet, and liquid level gauge hand valve outlet port connects the kerosene liquid level gauge; The kerosene storage tank exports the be linked in sequence preposition hand valve of kerosene, kerosene pipe filter, connects the kerosene pneumatic valve; Pipeline between the preposition hand valve of kerosene storage tank and kerosene arranges the kerosene temperature sensor; Operated with kerosene electromagnetic valve entrance attended operation nitrogen inlet, outlet connects the operation gas entrance of kerosene pneumatic valve by two pipes, control respectively the opening and closing of pneumatic valve; The pneumatic valve outlet port of kerosene connects kerosene release hand valve and test bay kerosene road by threeway; The kerosene hand valve outlet port of releasing connects the kerosene outlet of releasing.
The invention has the advantages that:
(1) while carrying out pressure is higher, flow is larger test, directly use the air-regulation type decompressor to carry out supercharging to working medium, pressure and the flow response speed of working medium supply are faster; While carrying out pressure is less, flow is lower test, use the pressure accumulation surge tank to coordinate the air-regulation type decompressor to carry out supercharging to working medium, pressure and the flow of working medium supply are more accurate, are particularly suitable for the test of low discharge, tiny flow quantity; Therefore, the pressure range of adjustment of system is wide, and applicability is strong.
(2) the elevated pressure nitrogen gas circuit is except providing source of the gas for the air-regulation type decompressor,, for system provides metathesis, before system filling working medium, by the air displacement in pipeline, be also nitrogen, avoid the air reaction in working medium and pipeline to cause security incident, the simplification system, improve security.
(3) generally can not use two kinds of incendiary agent working medium during due to test simultaneously, therefore a road pressurization air source and two-way working medium are integrated into to same system, further simplify system; Except alcohol, kerosene, system also can be that other is nontoxic, the non-corrosiveness liquid working substance carries out supercharging, and versatility and extendability are strong.
(4) use pneumatic valve to replace solenoid control alcohol, kerosene to enter the test bay pipeline, while avoiding the solenoid valve power on/off, produce electric spark light or ignite alcohol, kerosene causes security incident.Use nitrogen to control source of the gas as pneumatic valve, by solenoid control nitrogen break-make, and then control pneumatic valve, system is more safe and reliable.
(5) system is provided for the pressure transducer of remote monitoring and the solenoid valve of Long-distance Control, realizes the remote monitoring to system, realizes convenience and security in use procedure.
The accompanying drawing explanation
Fig. 1 is structural representation of the present invention;
In figure, pipeline means with straight line, and the oblique line on pipeline means the road of exitting, to show the difference with air inlet path; The pipeline internal diameter means with capital D N, the concrete diameter of the numeral after DN (unit: millimeter).
The component type of the letter representation in figure is (numeral after letter is numbering, for distinguishing):
F-hand stop valve G-filtrator P-tensimeter JL-needle regulator HC-surge tank
JY-air-regulation type decompressor A-safety valve T-temperature sensor CX-propellant tank Y-liquid level gauge
QD-pneumatic stopping valve D-solenoid valve
In figure:
F1-high pressure admission hand valve F2-commander air inlet hand valve F3-low pressure venting hand valve
The preposition hand valve of F4-alcohol supercharging hand valve F5-alcohol pouring hand valve F6-alcohol
The F7-alcohol hand valve F8-pressure accumulation air inlet hand valve F9-commander venting hand valve of releasing
F10-alcohol pressure release hand valve F11-alcohol liquid level gauge hand valve F12-kerosene supercharging hand valve
F13-kerosene pressure release hand valve F14-kerosene pouring hand valve F15-kerosene liquid level gauge hand valve
The preposition hand valve of the F16-kerosene F17-kerosene hand valve A-low-pressure safety valve of releasing
G1-high pressure filter G2-alcohol pipe filter G3-kerosene pipe filter
P1-blowout-back pressure gauge P2-commanded pressure table P3-low pressure gauge
JY-decompressor JL-commands throttling valve
HC1-commander surge tank HC2-pressure accumulation surge tank
CX1-alcohol storage tank CX2-kerosene storage tank
Y1-alcohol liquid level gauge Y2-kerosene liquid level gauge
T1-alcohol temperature sensor T2-kerosene temperature sensor
D1-alcohol operation solenoid valve D2-operated with kerosene solenoid valve
QD1-alcohol pneumatic valve QD2-kerosene pneumatic valve
Embodiment
Below in conjunction with drawings and Examples, the present invention is described in further detail.
Annexation:
The present invention is a kind of Vacuum Plume effect experiment system alcohol/kerosene system, as shown in Figure 1, comprises elevated pressure nitrogen gas circuit, commander/displacement gas circuit, low pressure nitrogen gas circuit, alcohol road and kerosene road.
The elevated pressure nitrogen gas circuit comprises high pressure admission hand valve F1, blowout-back pressure gauge P1 and pressure transducer and high pressure filter G1.
High pressure admission hand valve F1 entrance connects the high pressure nitrogen source of the gas, and outlet connects high pressure filter G1; Blowout-back pressure gauge P1 and pressure transducer thereof are connected on the pipeline between high pressure admission hand valve F1 and high pressure filter G1; High pressure filter G1 outlet connects the entrance of decompressor JY and commander's air inlet hand valve F2.
Commander/displacement gas circuit comprises commander's air inlet hand valve F2, venting hand valve F9, commander's throttling valve JL, commander's surge tank HC1, commanded pressure table P2.
Commander's air inlet hand valve F2 outlet connects the entrance of commander throttling valve JL and venting hand valve F9 by threeway; Commander's throttling valve JL outlet connects commander's gas air intake opening of commander's surge tank HC1, commanded pressure table P2 and decompressor JL by four-way; Venting hand valve F9 outlet connects the nitrogen outlet of releasing.
The low pressure nitrogen gas circuit comprises decompressor JY, pressure accumulation air inlet hand valve F8, pressure accumulation surge tank HC2, low pressure gauge P3 and pressure transducer thereof, low-pressure safety valve A, low pressure venting hand valve F3, alcohol supercharging hand valve F4, alcohol pressure release hand valve F10, kerosene supercharging hand valve F12, kerosene pressure release hand valve F13.
Decompressor JY outlet connects respectively the entrance of pressure accumulation air inlet hand valve F8, low pressure gauge P3 and pressure transducer thereof, low-pressure safety valve A, low pressure venting hand valve F3, alcohol supercharging hand valve F4, kerosene supercharging hand valve F12 by 5 threeways; Pressure accumulation air inlet hand valve F8 outlet connects pressure accumulation surge tank HC2; Alcohol supercharging hand valve F4 outlet connects respectively the entrance of alcohol pressure release hand valve F10 and alcohol storage tank CX1 by threeway; Kerosene supercharging hand valve F12 outlet connects respectively the entrance of kerosene pressure release hand valve F13 and kerosene storage tank CX2 by threeway; The outlet of low-pressure safety valve A, low pressure venting hand valve F3, alcohol pressure release hand valve F10, kerosene pressure release hand valve F13 connects the nitrogen outlet of releasing.
The alcohol road comprises alcohol pouring hand valve F5, alcohol storage tank CX1, alcohol liquid level gauge hand valve F11, alcohol liquid level gauge Y1, alcohol temperature sensor T1, the preposition hand valve of alcohol F6, alcohol pipe filter G2, alcohol pneumatic valve QD1, alcohol operation solenoid valve D1, the alcohol hand valve F7 that releases.
Alcohol pouring hand valve F5 entrance connects the alcohol filler, and outlet connects alcohol storage tank CX1; Alcohol storage tank CX1 sidewall bottom has a hole, connects alcohol liquid level gauge hand valve F11 entrance, and liquid level gauge hand valve F11 outlet connects alcohol liquid level gauge Y1; Alcohol storage tank CX1 exports the be linked in sequence preposition hand valve of alcohol F6, alcohol pipe filter G2, meets alcohol pneumatic valve QD1; Pipeline between the preposition hand valve of alcohol storage tank CX1 and alcohol F6 arranges alcohol temperature sensor T1; Alcohol operation solenoid valve D1 entrance attended operation nitrogen inlet, outlet connects the operation gas entrance of alcohol pneumatic valve QD1 by two pipes, control respectively the opening and closing of pneumatic valve; Alcohol pneumatic valve QD1 outlet connects alcohol release hand valve F7 and test bay alcohol road by threeway; Release hand valve F7 outlet of alcohol connects the alcohol outlet of releasing.
The kerosene road comprises kerosene pouring hand valve F14, kerosene storage tank CX2, kerosene liquid level gauge hand valve F15, kerosene liquid level gauge Y2, kerosene temperature sensor T2, the preposition hand valve of kerosene F16, kerosene pipe filter G3, kerosene pneumatic valve QD2, operated with kerosene solenoid valve D2, the kerosene hand valve F17 that releases.
Kerosene pouring hand valve F14 entrance connects the kerosene filler, and outlet connects kerosene storage tank CX2; Kerosene storage tank CX2 sidewall bottom has a hole, connects kerosene liquid level gauge hand valve F15 entrance, and liquid level gauge hand valve F15 outlet connects kerosene liquid level gauge Y2; Kerosene storage tank CX2 exports the be linked in sequence preposition hand valve of kerosene F16, kerosene pipe filter G3, meets kerosene pneumatic valve QD2; Pipeline between the preposition hand valve of kerosene storage tank CX2 and kerosene F16 arranges kerosene temperature sensor T2; Operated with kerosene solenoid valve D2 entrance attended operation nitrogen inlet, outlet connects the operation gas entrance of kerosene pneumatic valve QD2 by two pipes, control respectively the opening and closing of pneumatic valve; Kerosene pneumatic valve QD2 outlet connects kerosene release hand valve F17 and test bay kerosene road by threeway; Release hand valve F17 outlet of kerosene connects the kerosene outlet of releasing.
Practical function:
,Fen Qing road, Zhu Qing road provides respectively the nitrogen below two-way pressure 6MPa by the air-regulation type decompressor for the test bay gas circuit, can backup each other, also can be needed the test of two-way nitrogen simultaneously, as the test of engine two-shipper, be used in conjunction with different sonic nozzles, can obtain the nitrogen of different flow, be mainly used in the nitrogen supply (NS) of intermediate pressure, intermediate flow.The air-regulation type decompressor is by pin type throttle valve control gas turnover surge tank and regulate the pressure in surge tank, reaches the effect of regulating pressure after decompressor.Large volume low-pressure nitrogen storage tank is connected in nitrogen system by joint, but You Fenqing road or other gas source feed, can store and provide the following low-pressure nitrogen of 1.2MPa, be mainly used in the nitrogen supply (NS) of the microminiature engine of low-pressure, low discharge, guarantee more accurate pressure supply.Therefore, the system pressure modification stability, the scope that comprise ,Fen Qing road, Zhu Qing road, large capacity low pressure nitrogen storage tank road are wide, and versatility is stronger, can meet the work requirements of multitask.
Nitrogen system arranges the remote pressure monitoring at nitrogen high pressure, main hydrogen low pressure, minute hydrogen low pressure, large volume low-pressure nitrogen storage tank, the solenoid valve of Long-distance Control is set in main hydrogen low pressure, minute hydrogen low pressure, the remote monitoring of realization to system, guarantee convenience and security in use procedure.
Due to the inflammable and explosive character of nitrogen, nitrogen system has been taked stricter safe precaution measure, the security of safeguards system.Specifically comprise: use high pressure nitrogen but not nitrogen as the adjusting source of the gas of air-regulation type decompressor, high pressure nitrogen has the effect of displacement pipeline nitrogen simultaneously; Use is controlled the nitrogen break-make by the pneumatic valve of solenoid control, and solenoid valve is carried out to isolation processing, ignites while preventing electromagnetic valve work or ignites nitrogen; The nitrogen of system special use release hand valve, pipeline and outlet, ,Fen Qing road, Zhu Qing road and large volume low-pressure nitrogen tank design have safety valve, safety valve outlet is connected to the nitrogen pipeline of releasing, the maximum pressure value allowed according to position carries out threshold value setting, when pipeline inner pressure during higher than the safety valve secure threshold, safety valve is automatically opened and is carried out the pipeline pressure release, and safeguards system is safe and reliable; The low-pressure nitrogen that has neither part nor lot in reaction in the test bay pipeline is disposed to the special use outlet of releasing by the nitrogen pipeline of releasing, and avoids nitrogen directly to be disposed to vacuum chamber and destroys vacuum tightness, or be disposed to test bay and cause security incident.
Operating process:
The present invention propose for Vacuum Plume effect experiment system provide pressure accurately, the alcohol of stability of flow, safe and reliable alcohol and kerosene working medium/kerosene system.
(1) status checking:
Before alcohol/kerosene system is used, need to guarantee that all hand stop valves, needle regulator and solenoid valve are in closed condition.Connect high pressure nitrogen to the high pressure nitrogen inlet, connect low-pressure nitrogen to operating nitrogen inlet.
(2) pipeline displacement:
Before system is used front or long-term placement to re-use for the first time, because in pipeline, existing and maybe may have air, if directly annotate alcohol or kerosene, may blast, therefore need first use the air in the nitrogen replacement pipeline, then carry out the filling of working medium.
Concrete operations are: open successively high pressure admission hand valve F1, commander's air inlet hand valve F2, pressure accumulation air inlet hand valve F8, alcohol supercharging hand valve F4, the preposition hand valve of alcohol F6, kerosene supercharging hand valve F12, the preposition hand valve of kerosene F16, slow circumvolve is opened commander's throttling valve JL, observe the registration of low pressure gauge P3, when pressure reaches a low voltage value (general 0.5MPa is following), close commander's throttling valve JL; Remote opening alcohol operation solenoid valve D1, operated with kerosene solenoid valve D2 between observing and controlling, to control opening wine essence pneumatic valve QD1 and kerosene pneumatic valve QD2, continue logical nitrogen more than 1 minute, and air in pipeline all is replaced into to nitrogen; Close alcohol operation solenoid valve D1 and operated with kerosene solenoid valve D2, with control, close alcohol pneumatic valve QD1 and kerosene pneumatic valve QD2, according to the backward of hand valve opening sequence, close successively all hand valves.
(3) working medium filling:
While using alcohol road supply alcohol working medium, the serve a round of liquor to the guests filling of Seiko matter of advanced person: open alcohol pouring hand valve F5, wait for that the interior pressure of alcohol storage tank CX1 is (due to the pipeline displacement, nitrogen pressure is higher than atmospheric pressure in storage tank) reduce to atmospheric pressure after, open alcohol liquid level gauge hand valve F11, by the alcohol filler, alcohol is injected to alcohol storage tank CX1 as early as possible, the liquid level indicated altitude of liquid level gauge Y1 is the liquid level in alcohol storage tank CX1; After filling, close alcohol pouring hand valve F5 and alcohol liquid level gauge hand valve F11.
The filling of kerosene working medium and alcohol filling class of operation are seemingly.
(4) pressure regulation feed flow:
After the working medium filling, regulate the pressurized nitrogen atmospheric pressure, working medium is carried out to supercharging: open high pressure admission hand valve F1, commander's air inlet hand valve F2, slow circumvolve is opened commander's throttling valve JL, observe low pressure gauge P3, when low pressure gauge P3 registration reaches the pressure of demand, close commander's throttling valve JL; When low pressure gauge P3 registration during higher than the pressure of demand, close commander's air inlet hand valve F2, open commander's venting hand valve F9, crack low pressure venting hand valve F3, slow circumvolve is opened commander's throttling valve JL, when low pressure gauge P3 registration reaches the pressure of demand, close commander's throttling valve JL, low pressure venting hand valve F3, open commander's air inlet hand valve F2.
If carry out the test that pressure is higher, flow is larger, do not open pressure accumulation air inlet hand valve F8 during nitrogen supercharging, can guarantee that pressure and the flow response speed of working medium supply is faster; If carry out the test that pressure is less, flow is lower, open pressure accumulation air inlet hand valve F8 during nitrogen supercharging, can guarantee that pressure and the flow of working medium supply is more stable.
After the pressurized nitrogen atmospheric pressure is regulated, take the alcohol road is the supply operation of example explanation working medium: open alcohol supercharging hand valve F4, the preposition hand valve of alcohol F6, between observing and controlling, Long-distance Control alcohol operation solenoid valve D1 is to open or to close alcohol pneumatic valve QD1, and monitoring low pressure gauge P3, realize the break-make to the supply of alcohol working medium.
Supply operation and the alcohol working medium of kerosene working medium are similar.
(5) pressure release drainage
After test, need to first carry out the pressure release of nitrogen, then carry out releasing of working medium.
Being operating as of nitrogen pressure release: close high pressure admission hand valve F1, commander's air inlet hand valve F2, open and command venting hand valve F9, commander's throttling valve JL, low pressure venting hand valve F3, alcohol pressure release hand valve F10, kerosene pressure release hand valve F13, observe commanded pressure table P2 and low pressure gauge P3, when all Pressure Drops are following to 0.5MPa, close all hand valves and throttling valve; Open commander's air inlet hand valve F2, commander's venting hand valve F9, observe blowout-back pressure gauge P1, when it, be down to 0.5MPa when following, close all hand valves.
Working medium is released is operating as (take the alcohol road as example): container is positioned over to the alcohol outlet of releasing, open the preposition hand valve of alcohol F6, the alcohol hand valve F7 that releases, between observing and controlling, remote opening alcohol operation solenoid valve is with opening wine essence pneumatic valve QD1, after waiting for whole outflow of alcohol in alcohol storage tank CX1 and pipeline, control alcohol operation solenoid valve to close alcohol pneumatic valve QD1, close alcohol preposition hand valve F6 and the alcohol hand valve F7 that releases.
The operation of releasing of kerosene working medium is similar with alcohol working medium.
Claims (2)
1. Vacuum Plume effect experiment system alcohol/kerosene system, comprise elevated pressure nitrogen gas circuit, commander/displacement gas circuit, low pressure nitrogen gas circuit, alcohol road and kerosene road;
The elevated pressure nitrogen gas circuit comprises high pressure admission hand valve (F1), blowout-back pressure gauge (P1) and pressure transducer thereof and high pressure filter (G1);
High pressure admission hand valve (F1) entrance connects the high pressure nitrogen source of the gas, and outlet connects high pressure filter (G1); Blowout-back pressure gauge (P1) and pressure transducer thereof are connected on the pipeline between high pressure admission hand valve (F1) and high pressure filter (G1); High pressure filter (G1) outlet connects the entrance of decompressor (JY) and commander's air inlet hand valve (F2);
Commander/displacement gas circuit comprises commander's air inlet hand valve (F2), venting hand valve (F9), commander's throttling valve (JL), commander's surge tank (HC1), commanded pressure table (P2);
Commander's air inlet hand valve (F2) outlet connects the entrance of commander's throttling valve (JL) and venting hand valve (F9) by threeway; Commander's throttling valve (JL) outlet connects commander's gas air intake opening of commanding surge tank (HC1), commanded pressure table P2 and decompressor (JL) by four-way; Venting hand valve (F9) outlet connects the nitrogen outlet of releasing;
The low pressure nitrogen gas circuit comprises decompressor (JY), pressure accumulation air inlet hand valve (F8), pressure accumulation surge tank (HC2), low pressure gauge (P3) and pressure transducer thereof, low-pressure safety valve (A), low pressure venting hand valve (F3), alcohol supercharging hand valve (F4), alcohol pressure release hand valve (F10), kerosene supercharging hand valve (F12), kerosene pressure release hand valve (F13);
Decompressor JY outlet connects respectively the entrance of pressure accumulation air inlet hand valve (F8), low pressure gauge (P3) and pressure transducer thereof, low-pressure safety valve (A), low pressure venting hand valve (F3), alcohol supercharging hand valve (F4), kerosene supercharging hand valve (F12) by 5 threeways; Pressure accumulation air inlet hand valve (F8) outlet connects pressure accumulation surge tank (HC2); Alcohol supercharging hand valve (F4) outlet connects respectively the entrance of alcohol pressure release hand valve (F10) and alcohol storage tank (CX1) by threeway; Kerosene supercharging hand valve (F12) outlet connects respectively the entrance of kerosene pressure release hand valve (F13) and kerosene storage tank (CX2) by threeway; The outlet of low-pressure safety valve (A), low pressure venting hand valve (F3), alcohol pressure release hand valve (F10), kerosene pressure release hand valve (F13) connects the nitrogen outlet of releasing;
The alcohol road comprises alcohol pouring hand valve (F5), alcohol storage tank (CX1), alcohol liquid level gauge hand valve (F11), alcohol liquid level gauge (Y1), alcohol temperature sensor (T1), the preposition hand valve of alcohol (F6), alcohol pipe filter (G2), alcohol pneumatic valve (QD1), alcohol operation solenoid valve (D1), the alcohol hand valve (F7) of releasing;
Alcohol pouring hand valve (F5) entrance connects the alcohol filler, and outlet connects alcohol storage tank (CX1); Alcohol storage tank (CX1) sidewall bottom has a hole, connects alcohol liquid level gauge hand valve (F11) entrance, and liquid level gauge hand valve (F11) outlet connects alcohol liquid level gauge (Y1); Alcohol storage tank (CX1) exports the be linked in sequence preposition hand valve of alcohol (F6), alcohol pipe filter (G2), connects alcohol pneumatic valve (QD1); Pipeline between the preposition hand valve of alcohol storage tank (CX1) and alcohol (F6) arranges alcohol temperature sensor (T1); Alcohol operation solenoid valve (D1) entrance attended operation nitrogen inlet, outlet connects the operation gas entrance of alcohol pneumatic valve (QD1) by two pipes, control respectively the opening and closing of pneumatic valve; Alcohol pneumatic valve (QD1) outlet connects alcohol release hand valve (F7) and test bay alcohol road by threeway; Release hand valve (F7) outlet of alcohol connects the alcohol outlet of releasing;
The kerosene road comprises kerosene pouring hand valve (F14), kerosene storage tank (CX2), kerosene liquid level gauge hand valve (F15), kerosene liquid level gauge (Y2), kerosene temperature sensor (T2), the preposition hand valve of kerosene (F16), kerosene pipe filter (G3), kerosene pneumatic valve (QD2), operated with kerosene solenoid valve (D2), the kerosene hand valve (F17) of releasing;
Kerosene pouring hand valve (F14) entrance connects the kerosene filler, and outlet connects kerosene storage tank (CX2); Kerosene storage tank (CX2) sidewall bottom has a hole, connects kerosene liquid level gauge hand valve (F15) entrance, and liquid level gauge hand valve (F15) outlet connects kerosene liquid level gauge (Y2); Kerosene storage tank (CX2) exports the be linked in sequence preposition hand valve of kerosene (F16), kerosene pipe filter (G3), connects kerosene pneumatic valve (QD2); Pipeline between the preposition hand valve of kerosene storage tank (CX2) and kerosene (F16) arranges kerosene temperature sensor (T2); Operated with kerosene solenoid valve (D2) entrance attended operation nitrogen inlet, outlet connects the operation gas entrance of kerosene pneumatic valve (QD2) by two pipes, control respectively the opening and closing of pneumatic valve; Kerosene pneumatic valve (QD2) outlet connects kerosene release hand valve (F17) and test bay kerosene road by threeway; Release hand valve (F17) outlet of kerosene connects the kerosene outlet of releasing.
2. the method for operating of Vacuum Plume effect experiment system alcohol/kerosene system comprises following step:
(1) status checking:
Before alcohol/kerosene system is used, need to guarantee that all hand stop valves, needle regulator and solenoid valve are in closed condition; Connect high pressure nitrogen to the high pressure nitrogen inlet, connect low-pressure nitrogen to operating nitrogen inlet;
(2) pipeline displacement:
Before system is used front or long-term placement to re-use for the first time, because in pipeline, existing and maybe may have air, if directly annotate alcohol or kerosene, may blast, therefore need first use the air in the nitrogen replacement pipeline, then carry out the filling of working medium;
Concrete operations are: open successively high pressure admission hand valve (F1), commander's air inlet hand valve (F2), pressure accumulation air inlet hand valve (F8), alcohol supercharging hand valve (F4), the preposition hand valve of alcohol (F6), kerosene supercharging hand valve (F12), the preposition hand valve of kerosene (F16), slow circumvolve is opened commander's throttling valve (JL), observe the registration of low pressure gauge (P3), pressure reaches below 0.5MPa, closes commander's throttling valve (JL); Remote opening alcohol operation solenoid valve (D1), operated with kerosene solenoid valve (D2) between observing and controlling, to control opening wine essence pneumatic valve (QD1) and kerosene pneumatic valve (QD2), continue logical nitrogen more than 1 minute, and air in pipeline all is replaced into to nitrogen; Close alcohol operation solenoid valve (D1) and operated with kerosene solenoid valve (D2), with control, close alcohol pneumatic valve (QD1) and kerosene pneumatic valve (QD2), according to the backward of hand valve opening sequence, close successively all hand valves;
(3) working medium filling:
While using alcohol road supply alcohol working medium, the serve a round of liquor to the guests filling of Seiko matter of advanced person: open alcohol pouring hand valve (F5), after waiting for that the interior pressure of alcohol storage tank (CX1) is reduced to atmospheric pressure, open alcohol liquid level gauge hand valve (F11), by the alcohol filler, alcohol is injected to alcohol storage tank (CX1), the liquid level indicated altitude of liquid level gauge (Y1) is the liquid level in alcohol storage tank (CX1); After filling, close alcohol pouring hand valve (F5) and alcohol liquid level gauge hand valve (F11);
The filling of kerosene working medium and alcohol filling operation are in like manner;
(4) pressure regulation feed flow:
After the working medium filling, regulate the pressurized nitrogen atmospheric pressure, working medium is carried out to supercharging: open high pressure admission hand valve (F1), commander's air inlet hand valve (F2), slow circumvolve is opened commander's throttling valve (JL), observe low pressure gauge (P3), when low pressure gauge (P3) registration reaches the pressure of demand, close commander's throttling valve (JL); When low pressure gauge (P3) registration during higher than the pressure of demand, close commander's air inlet hand valve (F2), open commander's venting hand valve (F9), crack low pressure venting hand valve (F3), slow circumvolve is opened commander's throttling valve (JL), when low pressure gauge (P3) registration reaches the pressure of demand, close commander's throttling valve (JL), low pressure venting hand valve (F3), open commander's air inlet hand valve (F2);
Determine whether to open pressure accumulation air inlet hand valve (F8) according to pressure, flow;
After the pressurized nitrogen atmospheric pressure is regulated, take the alcohol road is the supply operation of example explanation working medium: open alcohol supercharging hand valve (F4), the preposition hand valve of alcohol (F6), between observing and controlling, Long-distance Control alcohol operation solenoid valve (D1) is to open or to cut out alcohol pneumatic valve (QD1), and monitoring low pressure gauge (P3), realize the break-make to the supply of alcohol working medium;
The supply operation of kerosene working medium and alcohol working medium are in like manner;
(5) pressure release drainage
After test, need to first carry out the pressure release of nitrogen, then carry out releasing of working medium;
Being operating as of nitrogen pressure release: close high pressure admission hand valve (F1), commander's air inlet hand valve (F2), open and command venting hand valve (F9), commander's throttling valve (JL), low pressure venting hand valve (F3), alcohol pressure release hand valve (F10), kerosene pressure release hand valve (F13), observe commanded pressure table (P2) and low pressure gauge (P3), when all Pressure Drops are following to 0.5MPa, close all hand valves and throttling valve; Open commander's air inlet hand valve (F2), commander venting hand valve (F9), observe blowout-back pressure gauge (P1), when it, be down to 0.5MPa when following, close all hand valves;
Take the alcohol road as example, what working medium was released is operating as: container is positioned over to the alcohol outlet of releasing, open the preposition hand valve of alcohol (F6), the alcohol hand valve (F7) of releasing, between observing and controlling, remote opening alcohol operation solenoid valve is with opening wine essence pneumatic valve (QD1), after waiting for whole outflow of alcohol in alcohol storage tank (CX1) and pipeline, control alcohol operation solenoid valve to close alcohol pneumatic valve (QD1), close the preposition hand valve of alcohol (F6) and the alcohol hand valve (F7) of releasing;
Kerosene working medium release the operation with alcohol working medium in like manner.
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