CN102095584B - Hydrogen-rich /oxygen-rich gas combustion tester and test method - Google Patents
Hydrogen-rich /oxygen-rich gas combustion tester and test method Download PDFInfo
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- CN102095584B CN102095584B CN2010105744772A CN201010574477A CN102095584B CN 102095584 B CN102095584 B CN 102095584B CN 2010105744772 A CN2010105744772 A CN 2010105744772A CN 201010574477 A CN201010574477 A CN 201010574477A CN 102095584 B CN102095584 B CN 102095584B
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Abstract
The invention provides a hydrogen-rich/oxygen-rich gas combustion tester and test method. The tester comprises three pneumatic resonance igniters, an oxygen-rich precombustion chamber, a hydrogen-rich precombustion chamber and a main combustion chamber, ignition supply systems are arranged for the pneumatic resonance igniters; the oxygen-rich precombustion chamber is provided with an oxygen-rich precombustion chamber supply system, the hydrogen-rich precombustion chamber is provided with a hydrogen-rich precombustion chamber supply system, a main combustion chamber propellant is supplied by the hydrogen-rich precombustion chamber and the oxygen-rich precombustion chamber, and a test is controlled by switching on and off a valve in the supply system to start and stop. In a start process, the igniters, the hydrogen-rich precombustion chamber, the oxygen-rich precombustion chamber and the combustion chamber are sequentially started; and the igniters, and the oxygen-rich precombustion chamber, the hydrogen-rich precombustion chamber and the combustion chamber are sequentially stopped during parking. By controlling the start time and the close time of each valve, the occurrence of a high-temperature oxygen-rich state is avoided and the burn out of an engine is avoided so that the start and stop are safe and reliable.
Description
Technical field
The present invention relates to design of liquid-propellant rocket engine pilot system and experimental technique field, be specifically related to a kind of rich hydrogen/oxygen rich fuel gas gas gas firing test unit and test method thereof.
Background technology
Engine is in startup and docking process, and the working environment of engine system parameter, engine changes on a large scale rapidly, is easy to make whole engine system assembly to bear exceedingly odious operating mode, thereby causes engine failure.Design of engine supply system and supply option are to influence the engine start and the topmost factor of stopping.In various engine systems, full flow afterburning cycle engine system has oxygen enrichment pre-combustion chamber and Fu Qing pre-combustion chamber, and system architecture is complicated, starts and docking process so also relative complex.
Gas gas firing technology is one of gordian technique of full flow afterburning cycle engine, and a large amount of gas gas firing tests is the basis of breaking through gas gas firing chamber technology.For the rich hydrogen of full flow afterburning cycle engine/oxygen rich fuel gas gas-gas injector ground experiment part, though the pre-combustion chamber supply system is arranged, there is not the turbopump system, the engine of relative practical engineering application, supply system is simple relatively.Adopt the Pneumatic resonance firing technique, can realize the repetition reliable ignition, but lighter needs independent supply system, supply system difficulty of design and complexity increase.Wang Xiaowei etc. rolled up in " the full flow afterburning cyclic test engine starting process " of the 4th phase Push Technology 407-411 page or leaf in " research of oxygen enrichment pre-combustion chamber start-up course " and the April the 29th in 2008 of the aviation power journal 2119-2123 page or leaf of the 22nd the 12nd phase of volume of Dec in 2007; Adopt methods of numerical to study the start-up course of oxygen enrichment pre-combustion chamber start-up course and full flow afterburning test engine; But do not relate to concrete test method; Also rest on the concept nature stage; Can not be applied to fully in the actual tests part commissioning process, and not have relevant docking process.Actual engine starting process and docking process and supply system are closely related, and the method for designing of supply system has influence on the security of testpieces in startup and the docking process.
Summary of the invention
The technical matters of solution of the present invention is: how to adopt a kind of rational supply system and testpieces to start and the parking sequential; Guarantee point firearm, oxygen enrichment pre-combustion chamber, rich hydrogen pre-combustion chamber and safe and reliable startup and the parking of main chamber; Avoid the structured material high-temperature oxydation to ablate, a kind of rich hydrogen/oxygen rich fuel gas gas gas firing test unit and test method thereof is provided.
A kind of rich hydrogen/oxygen rich fuel gas gas gas firing test unit mainly comprises the first Pneumatic resonance lighter, the second Pneumatic resonance lighter, the 3rd Pneumatic resonance lighter, oxygen enrichment pre-combustion chamber, rich hydrogen pre-combustion chamber and main chamber.The inlet of oxygen enrichment pre-combustion chamber is connected with the inlet of the first Pneumatic resonance lighter, and atmosphere is led in the outlet one tunnel of oxygen enrichment pre-combustion chamber, and another road leads to main chamber, and the oxygen rich fuel gas supply line that leads to main chamber is provided with nitrogen blow-off's by-pass valve control; The inlet of rich hydrogen pre-combustion chamber is connected with the inlet of the second Pneumatic resonance lighter, and the outlet of rich hydrogen pre-combustion chamber is connected with main chamber through connecting line; Main chamber also is connected with the inlet of the 3rd Pneumatic resonance lighter.
Three Pneumatic resonance lighters are connected with identical lighter supply system through connecting line separately, and said lighter supply system comprises that three tunnel: one route Pneumatic resonance lighter is connected with lighter resonance air road by-pass valve control through connecting line; One route Pneumatic resonance lighter is through connecting line tie point firearm oxygen road, oxygen road nitrogen blow-off two-bit triplet solenoid valve; Ventilatory assistance supply road is often opened and is connect the nitrogen blow-off road on the road on the normally closed path of firearm oxygen road, oxygen road nitrogen blow-off two-bit triplet solenoid valve; One route Pneumatic resonance lighter is through connecting line tie point firearm hydrogen road, hydrogen road nitrogen blow-off two-bit triplet solenoid valve; On the normally closed path of lighter hydrogen road, hydrogen road nitrogen blow-off two-bit triplet solenoid valve, connect hydrogen supply road, often open and connect the nitrogen blow-off road on the road; The preposition by-pass valve control of nitrogen all is installed on the nitrogen blow-off road.
Described oxygen enrichment pre-combustion chamber is connected with oxygen enrichment pre-combustion chamber supply system; Oxygen enrichment pre-combustion chamber supply system comprises oxygen enrichment pre-combustion chamber oxygen road by-pass valve control and oxygen enrichment pre-combustion chamber oxygen road nitrogen blow-off by-pass valve control; Wherein, export pipeline is connected on the pipeline behind the by-pass valve control of oxygen enrichment pre-combustion chamber oxygen road behind the oxygen enrichment pre-combustion chamber oxygen road nitrogen blow-off by-pass valve control.
Described rich hydrogen pre-combustion chamber is connected with rich hydrogen pre-combustion chamber supply system; Rich hydrogen pre-combustion chamber supply system comprises rich hydrogen pre-combustion chamber hydrogen road by-pass valve control; Rich hydrogen pre-combustion chamber hydrogen road nitrogen blow-off by-pass valve control; Rich hydrogen pre-combustion chamber oxygen road by-pass valve control, and rich hydrogen pre-combustion chamber oxygen road nitrogen blow-off by-pass valve control; Wherein, Export pipeline is connected on the pipeline behind the by-pass valve control of rich hydrogen pre-combustion chamber hydrogen road behind the rich hydrogen pre-combustion chamber hydrogen road nitrogen blow-off by-pass valve control, and export pipeline is connected on the pipeline behind the by-pass valve control of rich hydrogen pre-combustion chamber oxygen road behind the rich hydrogen pre-combustion chamber oxygen road nitrogen blow-off by-pass valve control.On each road nitrogen supply (NS) pipeline in this device, be provided with retaining valve after the by-pass valve control, be provided with sonic nozzle on each road Propellant Supply pipeline.
A kind of test method of using above-mentioned rich hydrogen/oxygen rich fuel gas gas gas firing test unit comprises start-up course and docking process.Start-up course comprised for three steps: the first step, bubbling air, hydrogen and oxygen successively, and utilize the Pneumatic resonance effect that three Pneumatic resonance lighters are lighted a fire, start three Pneumatic resonance lighters; Second goes on foot, feeds successively hydrogen, oxygen; Start rich hydrogen pre-combustion chamber; Produce hydrogen-rich combustion gas in the rich hydrogen pre-combustion chamber and be supplied to main chamber, nitrogen blow-off's by-pass valve control that 0.2s opens on the main chamber oxygen rich fuel gas supply line before rich hydrogen pre-combustion chamber starts feeds nitrogen; The 3rd step, past oxygen enrichment pre-combustion chamber aerating oxygen start the oxygen enrichment pre-combustion chamber, close the nitrogen blow-off's by-pass valve control on the main chamber oxygen rich fuel gas supply line then, and pure oxygen rich fuel gas gets into main chamber, and main chamber starts.
Docking process comprised for three steps: step 1, at first open the preposition valve in lighter nitrogen road; Close air; Close oxygen then, be blown into nitrogen at oxygen pipeline simultaneously, the hydrogen of the second Pneumatic resonance lighter and the 3rd Pneumatic resonance lighter is closed subsequently; Be blown into nitrogen simultaneously, three Pneumatic resonance lighters cut out; Step 2, the lighter hydrogen road of closing the first Pneumatic resonance lighter, hydrogen road nitrogen blow-off two-bit triplet solenoid valve; Be blown into nitrogen simultaneously; And on main chamber oxygen rich fuel gas pipeline, be blown into nitrogen; Close oxygen enrichment pre-combustion chamber oxygen supply then and be blown into nitrogen simultaneously, the oxygen enrichment pre-combustion chamber is closed; Step 3, when closing oxygen enrichment pre-combustion chamber oxygen supply, close rich hydrogen pre-combustion chamber oxygen supply; Be blown into nitrogen simultaneously, close the hydrogen supply of rich hydrogen pre-combustion chamber then, be blown into nitrogen simultaneously; Close the nitrogen blow-off of each supply line at last, stop rich hydrogen pre-combustion chamber and main chamber.
Advantage of the present invention and good effect are: the lighter by-pass valve control of (1) experimental provision of the present invention adopts the two-bit triplet solenoid valve; When closing Propellant Supply, can carry out nitrogen blow-off, can avoid the pipeline tempering can avoid again simultaneously that blending nitrogen has influence on igniting in the lighter course of work; (2) experimental provision of the present invention is provided with one-way cock on nitrogen blow-off's pipeline, avoids propellant to get into nitrogen blow-off's pipeline influence and blows down; (3) experimental provision of the present invention and experimental technique thereof; In entire test, lighter, rich hydrogen pre-combustion chamber, main chamber are fuel-rich state, and oxygen enrichment pre-combustion chamber start-up course is rich combustion; Process of the test and docking process are the low temperature oxygen enrichment; Startup through controlling each valve and shut-in time are avoided occurring high-temperature oxygen-enriched state and burn out engine, make start and stop safe and reliable, for practical application provides a kind of available apparatus and method.
Description of drawings
Fig. 1 is the structural representation of experimental provision of the present invention;
Fig. 2 is the flow chart of steps of start-up course in the experimental technique of the present invention;
Fig. 3 is the flow chart of steps of docking process in the experimental technique of the present invention.
Among the figure:
Embodiment
To combine accompanying drawing and embodiment that the present invention is done further detailed description below.
As shown in Figure 1; The test unit that Fu Qing/oxygen rich fuel gas gas gas firing test method comprises mainly contains the first Pneumatic resonance lighter 3, the second Pneumatic resonance lighter 23 and the 3rd Pneumatic resonance lighter 25; Oxygen enrichment pre-combustion chamber 2, rich hydrogen pre-combustion chamber 24 and main chamber 1.
The inlet of oxygen enrichment pre-combustion chamber 2 is connected with the inlet of the first Pneumatic resonance lighter 3; Atmosphere is led in the outlet one tunnel of oxygen enrichment pre-combustion chamber 2; Another road leads to main chamber 1, and the oxygen rich fuel gas supply line that leads to main chamber 1 is provided with nitrogen blow-off's by-pass valve control 11; The inlet of rich hydrogen pre-combustion chamber 24 is connected with the inlet of the second Pneumatic resonance lighter 23, and the outlet of rich hydrogen pre-combustion chamber 24 is connected with main chamber 1 through connecting line; Main chamber 1 is connected with the inlet of the 3rd Pneumatic resonance lighter 25.
Each is provided with and is connected with identical lighter supply system to the first Pneumatic resonance lighter 3, the second Pneumatic resonance lighter 23 and the 3rd Pneumatic resonance lighter 25; The lighter supply system that connects with the first Pneumatic resonance lighter 3 is the example explanation, and described lighter supply system comprises that three tunnel: one route, the first Pneumatic resonance lighter 3 is through connecting line tie point firearm resonance air road by-pass valve control 6; One route, the first Pneumatic resonance lighter 3 is connected with lighter oxygen road, oxygen road nitrogen blow-off two-bit triplet solenoid valve 9; One route, the first Pneumatic resonance lighter 3 is connected with lighter hydrogen road, hydrogen road nitrogen blow-off two-bit triplet solenoid valve 8; Wherein, ventilatory assistance road on the normally closed path of lighter oxygen road, oxygen road nitrogen blow-off two-bit triplet solenoid valve 9 is often opened and is connect the nitrogen blow-off road on the road; Connect the hydrogen road on the normally closed path in lighter hydrogen road, hydrogen road nitrogen blow-off two-bit triplet solenoid valve 8, often open and connect the nitrogen blow-off road on the road; The preposition by-pass valve control 7 of nitrogen all is installed on each nitrogen blow-off road.Oxygen enrichment pre-combustion chamber 2 is connected with oxygen enrichment pre-combustion chamber supply system; Described oxygen enrichment pre-combustion chamber supply system comprises oxygen enrichment pre-combustion chamber oxygen road by-pass valve control 5 and oxygen enrichment pre-combustion chamber oxygen road nitrogen blow-off by-pass valve control 4; Wherein, oxygen enrichment pre-combustion chamber oxygen road nitrogen blow-off by-pass valve control 4 back export pipelines are connected on the pipeline of by-pass valve control 5 back, oxygen enrichment pre-combustion chamber oxygen road.Rich hydrogen pre-combustion chamber 24 is connected with rich hydrogen pre-combustion chamber supply system; Described rich hydrogen pre-combustion chamber supply system comprises: rich hydrogen pre-combustion chamber hydrogen road by-pass valve control 13; Rich hydrogen pre-combustion chamber hydrogen road nitrogen blow-off by-pass valve control 12; Rich hydrogen pre-combustion chamber oxygen road by-pass valve control 19, and rich hydrogen pre-combustion chamber oxygen road nitrogen blow-off by-pass valve control 20, wherein; Rich hydrogen pre-combustion chamber hydrogen road nitrogen blow-off by-pass valve control 12 back export pipelines are connected on the pipeline behind the rich hydrogen pre-combustion chamber hydrogen road by-pass valve control 13, and rich hydrogen pre-combustion chamber oxygen road nitrogen blow-off by-pass valve control 20 back export pipelines are connected on the pipeline behind the rich hydrogen pre-combustion chamber oxygen road by-pass valve control 19.
In the experimental provision of the present invention; By-pass valve control on each road nitrogen supply (NS) pipeline, specifically as shown in Figure 1, comprising: the preposition by-pass valve control 7 of nitrogen; Oxygen enrichment pre-combustion chamber oxygen road nitrogen blow-off by-pass valve control 4; Lead to the nitrogen blow-off's by-pass valve control 11 on the oxygen rich fuel gas supply line of main chamber 1, rich hydrogen pre-combustion chamber hydrogen road nitrogen blow-off by-pass valve control 12, and rich hydrogen pre-combustion chamber oxygen road nitrogen blow-off by-pass valve control 20; Behind these by-pass valve controls, be provided with retaining valve 21, be used to prevent that propellant from getting into nitrogen blow-off's pipeline; Each road Propellant Supply pipeline; Comprise: oxygen enrichment pre-combustion chamber 2 is led to the pipeline of atmosphere; Oxygen enrichment pre-combustion chamber 2 is led to the pipeline of main chamber 1; Nitrogen blow-off's by-pass valve control 11 leads to the pipeline of main chamber 1; Oxygen enrichment pre-combustion chamber oxygen road by-pass valve control 5 leads to the pipeline of oxygen enrichment pre-combustion chamber 2 with oxygen enrichment pre-combustion chamber oxygen road nitrogen blow-off by-pass valve control 4; Lighter resonance air road by-pass valve control 6 leads to the pipeline of Pneumatic resonance lighter, and lighter oxygen road, oxygen road nitrogen blow-off two-bit triplet solenoid valve 9 lead to the pipeline of Pneumatic resonance lighter, and lighter hydrogen road, hydrogen road nitrogen blow-off two-bit triplet solenoid valve 8 lead to the pipeline of Pneumatic resonance lighter; Rich hydrogen pre-combustion chamber hydrogen road by-pass valve control 13 leads to the pipeline of rich hydrogen pre-combustion chamber 24 with rich hydrogen pre-combustion chamber hydrogen road nitrogen blow-off by-pass valve control 12; Rich hydrogen pre-combustion chamber oxygen road by-pass valve control 19 leads to the pipeline of rich hydrogen pre-combustion chamber 24 with rich hydrogen pre-combustion chamber oxygen road nitrogen blow-off by-pass valve control 20, on these pipelines, is provided with sonic nozzle 22, is used for Control Flow.
Use the experimental technique of rich hydrogen of the present invention/oxygen rich fuel gas gas gas firing test unit, be specifically related to start and two processes of stopping.Wherein, start-up course such as Fig. 2 are said, specifically may further comprise the steps:
The first step, bubbling air, hydrogen and oxygen at first start three Pneumatic resonance lighters 3,23,25 successively.At first, open the Pneumatic resonance air supply valve 6 supply air of the first Pneumatic resonance lighter 3, the second Pneumatic resonance lighter 23 and the 3rd Pneumatic resonance lighter 25, utilize the Pneumatic resonance effect that three Pneumatic resonance lighters are lighted a fire.Behind the 15s, open three lighter hydrogen roads, hydrogen road nitrogen blow-off two-bit triplet solenoid valve 8 simultaneously, toward the lighter supply of hydrogen; Open lighter oxygen road, oxygen road nitrogen blow-off two-bit triplet solenoid valve 9 behind the 20ms, toward the lighter supply oxygen.Hydrogen is introduced into Pneumatic resonance lighter 3,23,25 and guarantees Pneumatic resonance lighter 3; 23,25 is a rich combustion environment, avoids oxygen to be introduced into the hot environment ablation igniter structure that the back forms; Both get into combination gas that Pneumatic resonance lighter 3,23,25 forms and touch through the Pneumatic resonance effect of air and ignited; Form lighting-off torch and get into oxygen enrichment pre-combustion chamber 2, rich hydrogen pre-combustion chamber 24 and main chamber 1, the propellant that gets into these three devices is implemented igniting, lighter is accomplished start-up course.Three Pneumatic resonance lighters 3; 23; The propellant inlet point firearm of big flow influence the interior mixing ratio of lighter and causes loss of ignition when 25 first startups can avoid rich hydrogen pre-combustion chamber 24, oxygen enrichment pre-combustion chamber 2 and main chamber 1 to start; In addition, propellant is an incendivity after getting into rich hydrogen pre-combustion chamber 24, oxygen enrichment pre-combustion chamber 2 and main chamber 1, causes that detonation causes structural failure when avoiding propellant after main chamber 1 accumulates, to light a fire again.
In second step, after starting 0.2s, three Pneumatic resonance lighters 3,23,25 start rich hydrogen pre-combustion chamber 24.At first, open rich hydrogen pre-combustion chamber hydrogen supply valve 13, supply of hydrogen forms rich combustion environment in richness combustion pre-combustion chamber 24.Open rich hydrogen pre-combustion chamber oxygen supply valve 19 behind the 20ms; Oxygen gets into rich hydrogen pre-combustion chamber 24 backs and forms combination gas with contacted with hydrogen; Both touch to be lighted after the high-temperature ignition combustion gas of the second Pneumatic resonance lighter 23 ejection and take fire; Rich hydrogen pre-combustion chamber 24 starts, and produces hydrogen-rich combustion gas and is supplied to main chamber 1.Hydrogen-rich combustion gas gets into main chamber 1 and forms rich combustion environment.Starting rich hydrogen pre-combustion chamber 24 earlier can avoid oxygen rich fuel gas to form high-temperature oxygen-enriched environment ablation structured material.For getting into oxygen enrichment pre-combustion chamber 2, the hydrogen-rich combustion gas of avoiding big flow in oxygen enrichment pre-combustion chamber 2 start-up courses, forms high-temperature oxygen-enriched environment ablation structured material; 0.2s before Fu Qing combustion pre-combustion chamber 24 starts; Open the nitrogen blow-off's by-pass valve control 11 on the main chamber 1 oxygen rich fuel gas supply line; The supply of nitrogen prevents that hydrogen-rich combustion gas from getting into oxygen enrichment pre-combustion chamber 2.
In the 3rd step, after starting 0.1s, rich hydrogen pre-combustion chamber 24 starts oxygen enrichment pre-combustion chamber 2.Hydrogen is all supplied from the hydrogen pipeline of the first Pneumatic resonance lighter 3 in oxygen enrichment pre-combustion chamber 2, only need open oxygen enrichment pre-combustion chamber oxygen supply valve 5 during startup.Open oxygen enrichment pre-combustion chamber oxygen supply valve 5, oxygen gets into oxygen enrichment pre-combustion chamber 2, and with the hydrogen-rich combustion gas ignition combustion of the first Pneumatic resonance lighter, 3 ejections, oxygen enrichment pre-combustion chamber 2 starts.0.2s after; Close the nitrogen blow-off's by-pass valve control 11 on the main chamber 1 oxygen rich fuel gas supply line; Pure oxygen rich fuel gas gets into main chamber 1; With the hydrogen-rich combustion gas blending that is introduced into main chamber 1, the 3rd Pneumatic resonance lighter 25 igniting combustion gas after-combustions of contact main chamber 1, main chamber 1 starts.In whole starting process, the first Pneumatic resonance lighter 3, the second Pneumatic resonance lighter and the 3rd Pneumatic resonance lighter 25, rich hydrogen pre-combustion chamber 24, main chamber 1 are in fuel-rich state always, have avoided high-temperature oxygen-enriched fired state.And oxygen enrichment pre-combustion chamber 2; In start-up course, be rich hydrogen state in the first Pneumatic resonance lighter, 3 courses of work; Big flow oxygen entering back is the oxygen enrichment state, because fuel gas temperature was very low after flow oxygen got into greatly, in the anti-oxidant ablation scope that structured material can bear; Therefore can not cause oxidation ablation yet, guarantee safe reliability in the start-up course structured material.
Parking method is as shown in Figure 3, specifically may further comprise the steps:
Step 1, three Pneumatic resonance lighters 3,23,25 stop.After three Pneumatic resonance lighters 3,23,25 start, open all preposition valves 7 in lighter nitrogen road; Before nitrogen is filled to three Pneumatic resonance lighters 3,23,25 along pipeline lighter hydrogen road, hydrogen road nitrogen blow-off two-bit triplet solenoid valve 8 and lighter oxygen road, the oxygen road nitrogen blow-off two-bit triplet solenoid valve 9; Close the Pneumatic resonance air supply valve 6 of three Pneumatic resonance lighters 3,23,25 simultaneously; Flame is from keeping in three Pneumatic resonance lighters 3,23,25.Can, three Pneumatic resonance lighters 3,23,25 open the preposition valve 7 in lighter nitrogen road after starting 20s in test.After main chamber 1 starts 0.2s, close lighter oxygen road, the oxygen road nitrogen blow-off two-bit triplet solenoid valve 9 of three Pneumatic resonance lighters 3,23,25.In this process; Owing to the preposition valve 7 of lighter nitrogen blow-off is opened; Nitrogen is filled to three Pneumatic resonance lighters 3; 23; Before 25 lighter hydrogen road, hydrogen road nitrogen blow-off two-bit triplet solenoid valve 8 and lighter oxygen road, the oxygen road nitrogen blow-off two-bit triplet solenoid valve 9; Therefore equaled also to connect the nitrogen and the exit passageway of three lighter oxygen roads, oxygen road nitrogen blow-off two-bit triplet solenoid valve 9 when closing three hydrogen roads, hydrogen road nitrogen blow-off two-bit triplet solenoid valve 8 and three lighter oxygen roads, oxygen road nitrogen blow-off two-bit triplet solenoid valve 9, nitrogen gets into supply line the oxygen of remnants in the pipeline is blown down, and avoids the hydrogen tempering to burn to valve and burns out valve and all the other pipeline equipments.After three lighter oxygen roads, oxygen road nitrogen blow-off two-bit triplet solenoid valves 9 are closed 0.2s; Close lighter hydrogen road, the hydrogen road nitrogen blow-off two-bit triplet solenoid valve 8 of lighter hydrogen road, hydrogen road nitrogen blow-off two-bit triplet solenoid valve 8 and the 3rd Pneumatic resonance lighter 25 that is connected main chamber 1 of the second Pneumatic resonance lighter 23 that connects rich hydrogen pre-combustion chamber 24; Nitrogen is blown into and avoids the tempering burning simultaneously, and three Pneumatic resonance lighters are accomplished docking process.The hydrogen supply of the first Pneumatic resonance lighter 3 of oxygen enrichment pre-combustion chamber 2 is kept, and serves as the hydrogen supply road of oxygen enrichment pre-combustion chamber 2.
Step 2, oxygen enrichment pre-combustion chamber 2 is stopped.At first; Close lighter hydrogen road, the hydrogen road nitrogen blow-off two-bit triplet solenoid valve 8 of the first Pneumatic resonance lighter 3 that connects oxygen-enriched room lighter 2; Because before nitrogen has been fills up to lighter hydrogen road, hydrogen road nitrogen blow-off two-bit triplet valve 8, close hydrogen simultaneously nitrogen can be blown into hydrogen pipeline the air-blowing of pipeline residual hydrogen is gone out.After cutting off the hydrogen supply, oxygen enrichment pre-combustion chamber 2 is flame-out.0.1s after close oxygen enrichment pre-combustion chamber oxygen road by-pass valve control 5, open oxygen enrichment pre-combustion chamber oxygen road nitrogen blow-off valve 4 and main chamber oxygen rich fuel gas road nitrogen blow-off valve 11 simultaneously.Oxygen enrichment pre-combustion chamber oxygen pipeline nitrogen blow-off is used to blow down remaining oxygen in pipeline and the oxygen enrichment pre-combustion chamber 2, and main chamber oxygen rich fuel gas road nitrogen is used to prevent that main chamber 1 interior hydrogen-rich combustion gas is back to the oxygen enrichment pre-combustion chamber 2 interior oxygen-enriched combustings that form and causes the oxidation ablation consequence.Oxygen-enriched combusting chamber 2 oxygen supplies cut off back oxygen enrichment pre-combustion chamber 2 and stop, simultaneously because main chamber 1 does not have oxygenant to supply yet burn-out.In the stop supplies hydrogen process, hydrogen flowing quantity reduces gradually, so oxygen enrichment pre-combustion chamber 2 temperature reduce gradually, can not constitute dangerously to oxygen enrichment pre-combustion chamber 2, and being blown into of nitrogen avoided hydrogen-rich combustion gas to get into 2 burnings of oxygen enrichment pre-combustion chamber constituting dangerous simultaneously.
Step 3, rich hydrogen pre-combustion chamber 24 is stopped.When closing oxygen enrichment pre-combustion chamber oxygen road by-pass valve control 5, close rich hydrogen pre-combustion chamber oxygen road by-pass valve control 19, open rich hydrogen pre-combustion chamber 24 oxygen supply road nitrogen blow-off by-pass valve controls 20 simultaneously, nitrogen gets into and blows down remaining oxygen in the time of oxygen cutting.Rich hydrogen pre-combustion chamber 24 oxygen supplies cut off, and rich hydrogen pre-combustion chamber 24 is stopped working.Oxygen flow reduces gradually in stopping the oxygen supply process, and mixing ratio descends, and temperature reduces, and is in rich combustion environment always, can not constitute dangerous to the structure of rich hydrogen pre-combustion chamber 24.0.5s after close rich hydrogen pre-combustion chamber hydrogen control valve door 13, open rich hydrogen pre-combustion chamber hydrogen supply road nitrogen blow-off by-pass valve control 12 simultaneously, nitrogen got into and blows down remaining hydrogen in pipeline and the pre-combustion chamber, rich hydrogen pre-combustion chamber 24 parkings when hydrogen cut off.Because oxygen enrichment pre-combustion chamber 24 is stopped earlier, main chamber 1 oxygen rich fuel gas supply is cut off earlier, and mixing ratio reduces, and temperature reduces, and is in the rich combustion environment always, can not constitute dangerous to chamber structure.Close each supply line nitrogen blow-off behind the 2s, main chamber 1 stops.
Claims (10)
1. rich hydrogen/oxygen rich fuel gas gas gas firing test unit mainly comprises three Pneumatic resonance lighters (3,23; 25), oxygen enrichment pre-combustion chamber (2), rich hydrogen pre-combustion chamber (24) and main chamber (1); It is characterized in that the inlet of oxygen enrichment pre-combustion chamber (2) is connected with the inlet of the first Pneumatic resonance lighter (3), atmosphere is led in the outlet one tunnel of oxygen enrichment pre-combustion chamber (2); Another road leads to main chamber (1), and the oxygen rich fuel gas supply line that leads to main chamber (1) is provided with nitrogen blow-off's by-pass valve control (11); The inlet of rich hydrogen pre-combustion chamber (24) is connected with the inlet of the second Pneumatic resonance lighter (23), and the outlet of rich hydrogen pre-combustion chamber (24) is connected with main chamber (1) through connecting line; Main chamber (1) also is connected with the inlet of the 3rd Pneumatic resonance lighter (25);
The first Pneumatic resonance lighter (3), the second Pneumatic resonance lighter (23) and the 3rd Pneumatic resonance lighter (25) are connected with identical lighter supply system through connecting line separately; Described lighter supply system comprises that three tunnel: one route Pneumatic resonance lighter (3,23,25) is connected with lighter resonance air road by-pass valve control (6) through connecting line; One route Pneumatic resonance lighter (3; 23; 25) through connecting line tie point firearm oxygen road, oxygen road nitrogen blow-off two-bit triplet solenoid valve (9); Ventilatory assistance supply road is often opened and is connect the nitrogen blow-off road on the road on the normally closed path of lighter oxygen road, oxygen road nitrogen blow-off two-bit triplet solenoid valve (9); One route Pneumatic resonance lighter (3; 23; 25) through connecting line tie point firearm hydrogen road, hydrogen road nitrogen blow-off two-bit triplet solenoid valve (8); On the normally closed path of lighter hydrogen road, hydrogen road nitrogen blow-off two-bit triplet solenoid valve (8), connect hydrogen supply road, often open and connect the nitrogen blow-off road on the road; The preposition by-pass valve control of nitrogen (7) all is installed on the nitrogen blow-off road;
Described oxygen enrichment pre-combustion chamber (2) is connected with oxygen enrichment pre-combustion chamber supply system; Oxygen enrichment pre-combustion chamber supply system comprises oxygen enrichment pre-combustion chamber oxygen road by-pass valve control (5) and oxygen enrichment pre-combustion chamber oxygen road nitrogen blow-off's by-pass valve control (4); Wherein, oxygen enrichment pre-combustion chamber oxygen road nitrogen blow-off by-pass valve control (4) back export pipeline is connected on the pipeline behind the oxygen enrichment pre-combustion chamber oxygen road by-pass valve control (5);
Described rich hydrogen pre-combustion chamber (24) is connected with rich hydrogen pre-combustion chamber supply system; Rich hydrogen pre-combustion chamber supply system comprises rich hydrogen pre-combustion chamber hydrogen road by-pass valve control (13); Rich hydrogen pre-combustion chamber hydrogen road nitrogen blow-off's by-pass valve control (12); Rich hydrogen pre-combustion chamber oxygen road by-pass valve control (19), and rich hydrogen pre-combustion chamber oxygen road nitrogen blow-off's by-pass valve control (20); Wherein, Rich hydrogen pre-combustion chamber hydrogen road nitrogen blow-off's by-pass valve control (12) back export pipeline is connected on the pipeline behind the rich hydrogen pre-combustion chamber hydrogen road by-pass valve control (13), and rich hydrogen pre-combustion chamber oxygen road nitrogen blow-off's by-pass valve control (20) back export pipeline is connected on the pipeline behind the rich hydrogen pre-combustion chamber oxygen road by-pass valve control (19);
Be provided with retaining valve (21) after the by-pass valve control on each road nitrogen supply (NS) pipeline in this device, be provided with sonic nozzle (22) on each road Propellant Supply pipeline.
2. a kind of rich hydrogen according to claim 1/oxygen rich fuel gas gas gas firing test unit; It is characterized in that; Described retaining valve (21) specifically is arranged on after the following by-pass valve control: the preposition by-pass valve control of nitrogen (7), oxygen enrichment pre-combustion chamber oxygen road nitrogen blow-off's by-pass valve control (4), nitrogen blow-off's by-pass valve control (11); Rich hydrogen pre-combustion chamber hydrogen road nitrogen blow-off's by-pass valve control (12), and rich hydrogen pre-combustion chamber oxygen road nitrogen blow-off's by-pass valve control (20).
3. a kind of rich hydrogen according to claim 1/oxygen rich fuel gas gas gas firing test unit; It is characterized in that; Described sonic nozzle (22) specifically is arranged on on the lower pipeline: oxygen enrichment pre-combustion chamber (2) is led to the pipeline of atmosphere, and oxygen enrichment pre-combustion chamber (2) is led to the pipeline of main chamber (1), and nitrogen blow-off's by-pass valve control (11) leads to the pipeline of main chamber (1); Oxygen enrichment pre-combustion chamber oxygen road by-pass valve control (5) and oxygen enrichment pre-combustion chamber oxygen road nitrogen blow-off's by-pass valve control (4) lead to the pipeline of oxygen enrichment pre-combustion chamber (2); Lighter resonance air road by-pass valve control (6) leads to the pipeline of Pneumatic resonance lighter (3,23,25); Lighter oxygen road, oxygen road nitrogen blow-off two-bit triplet solenoid valve (9) lead to Pneumatic resonance lighter (3; 23,25) pipeline, lighter hydrogen road, hydrogen road nitrogen blow-off two-bit triplet solenoid valve (8) lead to Pneumatic resonance lighter (3; 23; 25) pipeline, rich hydrogen pre-combustion chamber hydrogen road by-pass valve control (13) leads to the pipeline of rich hydrogen pre-combustion chamber (24) with rich hydrogen pre-combustion chamber hydrogen road nitrogen blow-off's by-pass valve control (12), and rich hydrogen pre-combustion chamber oxygen road by-pass valve control (19) leads to the pipeline of rich hydrogen pre-combustion chamber (24) with rich hydrogen pre-combustion chamber oxygen road nitrogen blow-off's by-pass valve control (20).
4. application rights requires the test method of 1 described rich hydrogen/oxygen rich fuel gas gas gas firing test unit, it is characterized in that this experimental technique comprises start-up course and docking process;
Start-up course comprised for three steps: the first step, bubbling air, hydrogen and oxygen successively, and utilize the Pneumatic resonance effect to three Pneumatic resonance lighters (3,23,25) igniting, start three Pneumatic resonance lighters (3,23,25); Second goes on foot, feeds successively hydrogen, oxygen; Start rich hydrogen pre-combustion chamber (24); Produce hydrogen-rich combustion gas in the rich hydrogen pre-combustion chamber (24) and be supplied to main chamber (1), nitrogen blow-off's by-pass valve control (11) that 0.2s opens on main chamber (1) the oxygen rich fuel gas supply line before rich hydrogen pre-combustion chamber (24) starts feeds nitrogen; The 3rd step, past oxygen enrichment pre-combustion chamber (2) aerating oxygen start oxygen enrichment pre-combustion chamber (2), close the nitrogen blow-off's by-pass valve control (11) on main chamber (1) the oxygen rich fuel gas supply line then, and pure oxygen rich fuel gas gets into main chamber (1), and main chamber (1) starts;
Docking process comprised for three steps: step 1, at first open the preposition by-pass valve control of lighter nitrogen (7), the air supply of closing three Pneumatic resonance lighters (3,23,25) simultaneously; Close three Pneumatic resonance lighters (3,23,25) oxygen supply then; Simultaneously be blown into nitrogen at oxygen pipeline, the hydrogen of the second Pneumatic resonance lighter (23) and the 3rd Pneumatic resonance lighter (25) is closed subsequently, is blown into nitrogen simultaneously; Three Pneumatic resonance lighters (3,23,25) cut out; Step 2, the lighter hydrogen road of closing the first Pneumatic resonance lighter (3), hydrogen road nitrogen blow-off two-bit triplet solenoid valve (8); Be blown into nitrogen simultaneously; And on main chamber (1) oxygen rich fuel gas pipeline, be blown into nitrogen; Close oxygen enrichment pre-combustion chamber (2) oxygen supply then, be blown into nitrogen simultaneously, oxygen enrichment pre-combustion chamber (2) is closed; Step 3, when closing oxygen enrichment pre-combustion chamber (2) oxygen supply, close rich hydrogen pre-combustion chamber (24) oxygen supply; Be blown into nitrogen simultaneously; Close the hydrogen supply of rich hydrogen pre-combustion chamber (24) then; Be blown into nitrogen simultaneously, close the nitrogen blow-off of each supply line at last, rich hydrogen pre-combustion chamber (24) and main chamber (1) are closed.
5. the test method of rich hydrogen according to claim 4/oxygen rich fuel gas gas gas firing test unit; It is characterized in that, bubbling air, hydrogen and oxygen successively described in the first step of start-up course, specifically: at first; Open three lighter resonance air road by-pass valve controls (6) and give three Pneumatic resonance lighters (3; 23,25) supply air utilizes the igniting of Pneumatic resonance effect; Then behind the 15s, open three lighter hydrogen roads, hydrogen road nitrogen blow-off two-bit triplet solenoid valve (8) supply of hydrogen simultaneously; Behind the 20ms, open three lighter oxygen roads, oxygen road nitrogen blow-off two-bit triplet solenoid valve (9) supply oxygen simultaneously then.
6. the test method of rich hydrogen according to claim 4/oxygen rich fuel gas gas gas firing test unit; It is characterized in that; Feed hydrogen and oxygen successively described in second step of start-up course, specifically: at three Pneumatic resonance lighters (3,23; 25) behind the startup 0.2s, open rich hydrogen pre-combustion chamber hydrogen road by-pass valve control (13) supply of hydrogen; Open rich hydrogen pre-combustion chamber oxygen road by-pass valve control (19) supply oxygen then behind the 20ms.
7. the test method of rich hydrogen according to claim 4/oxygen rich fuel gas gas gas firing test unit is characterized in that, the 3rd of said start-up course goes on foot specifically: after rich hydrogen pre-combustion chamber (24) starts 0.1s; Open oxygen enrichment pre-combustion chamber oxygen road by-pass valve control (5); Oxygen gets into oxygen enrichment pre-combustion chamber (2), with the hydrogen-rich combustion gas ignition combustion of the first Pneumatic resonance lighter (3) ejection, starts oxygen enrichment pre-combustion chamber (2); Behind 0.2s; Close the nitrogen blow-off's by-pass valve control (11) on main chamber (1) the oxygen rich fuel gas supply line, pure oxygen rich fuel gas gets into main chamber (1), with the hydrogen-rich combustion gas blending that is introduced into main chamber (1); The 3rd Pneumatic resonance lighter (25) the igniting combustion gas after-combustion of contact main chamber (1), main chamber (1) starts.
8. the test method of rich hydrogen according to claim 4/oxygen rich fuel gas gas gas firing test unit; It is characterized in that, the step 1 described in the docking process specifically: six preposition by-pass valve controls of lighter nitrogen (7) are at three Pneumatic resonance lighters (3,23; 25) open after the startup; Close three lighter resonance air road by-pass valve controls (6) simultaneously, after main chamber (1) starts 0.2s, through close three lighter oxygen roads, oxygen road nitrogen blow-off two-bit triplet solenoid valve (9) cuts out three Pneumatic resonance lighters (3; 23; 25) oxygen supply behind the 0.2s, is closed lighter hydrogen road, the hydrogen road nitrogen blow-off two-bit triplet solenoid valve (8) of the second Pneumatic resonance lighter (23) and the 3rd Pneumatic resonance lighter (25) again.
9. the test method of rich hydrogen according to claim 4/oxygen rich fuel gas gas gas firing test unit; It is characterized in that; Step 2 described in the docking process is specifically: behind the lighter hydrogen road of closing the first Pneumatic resonance lighter (3), hydrogen road nitrogen blow-off two-bit triplet solenoid valve (8) 0.1s; Close oxygen enrichment pre-combustion chamber oxygen road by-pass valve control (5), open oxygen enrichment pre-combustion chamber oxygen road nitrogen blow-off's by-pass valve control (4) and main chamber oxygen rich fuel gas road nitrogen blow-off's by-pass valve control (11) simultaneously.
10. the test method of rich hydrogen according to claim 4/oxygen rich fuel gas gas gas firing test unit; It is characterized in that; Step 3 described in the docking process is specifically: when closing oxygen enrichment pre-combustion chamber oxygen road by-pass valve control (5), close rich hydrogen pre-combustion chamber oxygen road by-pass valve control (19); Open rich hydrogen pre-combustion chamber (24) oxygen supply road nitrogen blow-off's by-pass valve control (20) simultaneously; Then close rich hydrogen pre-combustion chamber hydrogen control valve door (13) behind the 0.5s, open rich hydrogen pre-combustion chamber hydrogen supply road nitrogen blow-off's by-pass valve control (12) simultaneously, close each supply line nitrogen blow-off then behind the 2s.
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| CN114018980B (en) * | 2021-10-31 | 2024-04-19 | 中国船舶集团有限公司第七一八研究所 | Test device and method for verifying equipment availability in hydrogen deflagration environment |
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| DE2300983A1 (en) * | 1973-01-10 | 1974-07-11 | Messerschmitt Boelkow Blohm | IGNITION SYSTEM FOR NON-THYPERGOLIC FUEL COMPONENTS OPERATED COMBUSTION CHAMBERS OF MISSILE ENGINES |
| JP2615413B2 (en) * | 1994-02-28 | 1997-05-28 | 科学技術庁航空宇宙技術研究所長 | Combined cycle rocket engine |
| RU2304727C1 (en) * | 2006-04-20 | 2007-08-20 | Александр Федорович Чабак | Oxygen-hydrogen-fuelled engine installation |
| CN101738319A (en) * | 2008-11-10 | 2010-06-16 | 北京航空航天大学 | Oxygen-enriched fuel gas supply device and method for fuel gas injector |
| CN101782462A (en) * | 2009-01-15 | 2010-07-21 | 北京航空航天大学 | Full-flow test bed oxygen system |
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