CN103486437A - Oxygen supply system for engine reusing test - Google Patents
Oxygen supply system for engine reusing test Download PDFInfo
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- CN103486437A CN103486437A CN201310403289.7A CN201310403289A CN103486437A CN 103486437 A CN103486437 A CN 103486437A CN 201310403289 A CN201310403289 A CN 201310403289A CN 103486437 A CN103486437 A CN 103486437A
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Abstract
The invention discloses an oxygen supply system for an engine reusing test. The oxygen supply system comprises an oxygen source system, an oxygen transporting system and an oxygen distribution table. In the oxygen source system, a process of preparing oxygen through a liquid oxygen vaporization method is adopted, and the utilization rate of raw liquid oxygen materials is improved. Through the real-time monitoring of a pressure sensor, the whole process can be safely performed. In the oxygen transporting system, measures are taken for control over the flow speed of an oxygen pipeline, a mode of connecting two pneumatic cutoff valves in parallel is adopted, and a small-aperture pneumatic cutoff valve is turned on in advance to be served as a pilot valve. The pressures of two ends of a large-aperture pneumatic cutoff valve are balanced, and the large-aperture pneumatic cutoff valve is turned on, so that a good effect of reducing the flow speed of high-pressure oxygen can be achieved. In the oxygen transporting system, a scheme of three main paths and an ignition path is adopted. A pipeline assembly can be reasonably selected according to test requirements.
Description
Technical field
The present invention relates to a kind of oxygen supply system of liquid propellant rocket engine test, belong to the airspace engine technical field, specifically, is that a kind of to have safety coefficient high, and control accuracy is high, can realize the oxygen supply system of telecontrol performance.
Background technique
Reusing airspace engine test field at present, require supply system can be for a long time repeatedly carry out propellant feed.The realization of propellant-feed system is successfully to carry out the guarantee of engine test, and wherein the design of oxygenant supply system is an important content.The oxygenant that oxygen is commonly used as a class, occupy an important position in motor propellant agent field.In the engine test process, the supply of oxygen maintains the state of high pressure, now oxygen has strong oxidizing property, in swiftly flowing process, easily and the greasy dirt in pipeline, spontaneous combustion occurs in the Ester friction, thereby it is dangerous that test occurs, so the oxygen supply system becomes a difficult point in the test overal system design.
At present in the domestic process being designed the oxygen pilot system, some directly carries out air feed by the oxygen cylinder group to the high pressure oxygen storage tank, owing to the high pressure oxygen flow velocity being had to higher restrictive condition (specifically can with reference to " Code for design of oxygen station " GB50030-2007), the mode of so direct supply is easily caused danger and wastes low oxygen.Adjusting for decompressor in pilot system master supply pipeline, general way is that decompressor is placed directly in the distribution platform at present, by manually regulating the outlet pressure value of decompressor, because the needs operator carry out work at the distribution platform, the personnel that caused like this contact with test the direct of working medium, for operator's safety, have formed certain threat.For the control of oxygen gas flow rate, be also an important problem place at present.
Summary of the invention
The objective of the invention is, in order to solve the problem of above-mentioned appearance, to have proposed a kind of safety coefficient high, accurately the oxygen supply system of control test system parameter, reused engine test for safety a feasible scheme be provided.
The present invention is a kind of oxygen supply system for reusing engine test, comprises that oxygen comes origin system, oxygen transport system and distribution platform.
The invention has the advantages that:
(1) oxygen of the present invention comes in origin system, has adopted the process of carrying out Preparation of oxygen by the method for vaporization of liquid oxygen, has improved the utilization ratio of liquid oxygen raw material.By the real-time monitoring of pressure transducer, realized that the safety of whole process is carried out;
(2) in oxygen transport system of the present invention, about the flow velocity of controlling oxygen pipeline, done some measures, adopted the mode of two pneumatic stopping valve parallel connections, the pneumatic stopping valve that one of them bore is less is opened in advance, serves as the function of pilot valve.Set up the balance of heavy caliber pneumatic stopping valve two ends pressure, then open bigbore pneumatic stopping valve, can reasonable effect be arranged to reducing the high pressure oxygen flow velocity like this;
(3), in oxygen transport system of the present invention, adopted the scheme of three main roads and an ignition path.Can reasonably select the pipeline combination according to the requirement of test.The sufficient like this utilization ratio that improves pipe-line system, prevented that single line from adapting to that different tests requires and the lower shortcoming of control accuracy that causes;
(4) in oxygen transport system of the present invention, the regulative mode of decompressor has been taked at present comparatively advanced person's remote control and regulation mode, by the secondary decompressor in the distribution platform, the decompressor in main supply line is regulated, both outlet pressure values, for corresponding one by one, be ratio and amplify.Can realize like this operator and test working medium away from, ensure tester safety;
(5) in oxygen transport system of the present invention, adopt the twice pneumatic stopping valve to be regulated and controled pipeline, can be measured and control the parameter in system fully.Between the twice valve, setting pressure table and pressure transducer carry out the measuring pressure size, and the uninterrupted that sonic nozzle carrys out pilot line is installed, and pneumatic pressure reducer carrys out the size of the pressure in pilot line.Such arrangement mode can improve the controllability of system greatly;
(6) in oxygen transport system of the present invention, adopt the scheme that adds hand stop valve at the pressure gauge front end, can improve so the detachable performance of system equipment;
(7) in oxygen transport system of the present invention, the position crucial at it is provided with filter for installation, guaranteed that the cleanliness of air supply source is in higher state;
(8) in oxygen transport system of the present invention, adopt the flow operations of twice swept-off gases, greatly possible blows down residual oxygen medium after the internal system test;
(9) in distribution platform of the present invention, adopt small-sized air chamber to maintain the required pressure of switching manipulation of pneumatic stopping valve, broken away from general design and maintained the required pressure of pneumatic stopping valve and the unsettled shortcoming of build-up of pressure by gas in pipeline;
(10) in oxygen supply system of the present invention, for the continuous test run task of reusing motor, having adopted the closing operation of one pneumatic stopping valve to carry out the gas medium supply to motor is controlled, due to the remote control ability of pneumatic stopping valve, fabulous like this lifting continuous running performance and the Security of system.
The accompanying drawing explanation
Fig. 1 is a kind of oxygen supply system schematic for reusing engine test of the present invention.
In figure:
101a-hand stop valve 101b-hand stop valve 101c-hand stop valve
101d-hand stop valve 101e-hand stop valve 101f-hand stop valve
101g-hand stop valve 101h-hand stop valve 101i-hand stop valve
102-low-pressure liquid oxygen storage tank 103a-safety valve 103b-safety valve
104a-pressure gauge 104b-pressure gauge 105-liquid oxygen pump
106-pressure transducer 107-vaporizer 108-pneumatic stopping valve
109-high pressure oxygen storage tank 201a-pneumatic stopping valve 201b-pneumatic stopping valve
201c-pneumatic stopping valve 201d-pneumatic stopping valve 201e-pneumatic stopping valve
201f-pneumatic stopping valve 201g-pneumatic stopping valve 201h-pneumatic stopping valve
202a-pressure gauge 202b-pressure gauge 202c-pressure gauge
203a-filter 203b-filter 204a-hand stop valve
204b-hand stop valve 204c-hand stop valve 205-pneumatic pressure reducer
206-safety valve 207-sonic nozzle 208-pressure transducer
209-bellows 210-one-way valve 211a-pneumatic stopping valve
211b-pneumatic stopping valve 211c-pneumatic stopping valve 211d-pneumatic stopping valve
212a-pressure gauge 212b-pressure gauge 213a-hand stop valve
213b-hand stop valve 213c-hand stop valve 214-pneumatic pressure reducer
215-safety valve 216-sonic nozzle 217-pressure transducer
218-bellows 219-one-way valve 220-filter
301a-hand stop valve 301b-hand stop valve 301c-hand stop valve
301d-hand stop valve 301e-hand stop valve 301f-hand stop valve
301g-hand stop valve 301h-hand stop valve 301i-hand stop valve
301j-hand stop valve 301k-hand stop valve 301l-hand stop valve
301m-hand stop valve 301n-hand stop valve 302-filter
303a-pressure gauge 303b-pressure gauge 303c-pressure gauge
303d-pressure gauge 303e-pressure gauge 304a-hand adjustment decompressor
304b-hand adjustment decompressor 304c-hand adjustment decompressor 304d-hand adjustment decompressor
The small-sized air chamber 3-of 305-distribution platform 401-motor power chamber
402-engine ignition device
Embodiment
Below in conjunction with drawings and Examples, the present invention is described in further detail.
A kind of oxygen supply system for reusing engine test, as shown in Figure 1, comprise that oxygen comes origin system, oxygen transport system and distribution platform 3.
Oxygen comes origin system to comprise hand stop valve (101a～101h), low-pressure liquid oxygen storage tank 102, safety valve (103a, 103b), pressure gauge (104a, 104b), liquid oxygen pump 105, pressure transducer 106, vaporizer 107, pneumatic stopping valve 108, high pressure oxygen storage tank 109 and pipeline.
The input of low-pressure liquid oxygen storage tank 102 connects loading line, the loading line bypass is provided with hand stop valve 101a, the top of low-pressure liquid oxygen storage tank 102 is by threeway, difference connection safety valve 103a, hand stop valve 101b, pressure gauge 104a, the output of low-pressure liquid oxygen storage tank 102 connects liquid oxygen pump 105 by hand stop valve 101c, low-pressure liquid oxygen storage tank 102 also connects a hand stop valve 101d, the other end of liquid oxygen pump 105 connects the input end of vaporizer 107 by hand stop valve 101f, liquid oxygen pump 105 also connects a hand stop valve 101e, between liquid oxygen pump 105 and hand stop valve 101f, be provided with pressure transducer 106, the output terminal of vaporizer 107 connects hand stop valve 101h by pneumatic stopping valve 108, connect again high pressure oxygen storage tank 109, vaporizer 107 also connects a hand stop valve 101g, high pressure oxygen storage tank 109 connects a hand stop valve 101i, high pressure oxygen storage tank 109 also connects a safety valve 103b, be provided with pressure gauge 104b between safety valve 103b and high pressure oxygen storage tank 109, the output of high pressure oxygen storage tank 109 connects respectively pneumatic stopping valve 201a and pneumatic stopping valve 201b.
Oxygen comes the main function of origin system to provide the oxygen source to high pressure oxygen storage tank 109.The major way of Preparation of oxygen is to provide the liquid oxygen medium by low-pressure liquid oxygen storage tank 102.By pressurized gas, liquid oxygen is squeezed out to low-pressure liquid oxygen storage tank 102, liquid oxygen enters liquid oxygen pump 105, by liquid oxygen pump 105, the force value of liquid oxygen medium is brought up to a certain degree, last high pressure liquid oxygen is through the vaporization of vaporizer 107, form high pressure oxygen, the direct like this high pressure oxygen storage tank 109 that can enter into is filled.
The oxygen transport system comprises pneumatic stopping valve (201a～201d), filter 203a, pressure gauge 202a, main road a, main road b, main road c, ignition path d.
The end of pneumatic stopping valve 201a connects high pressure oxygen storage tank 109, the other end connects the input end of filter 203a, a three-way valve is installed from high pressure oxygen storage tank 109 export pipelines, drawing a pipeline is connected with pneumatic stopping valve 201b input end, same from the export pipeline of pneumatic cut-off 201a, three-way valve is installed in appropriate location, with pneumatic stopping valve 201c input end, with pneumatic stopping valve 201d input end, is connected respectively.The output terminal of filter 203a connects respectively pneumatic stopping valve 201e, the pneumatic stopping valve 201e in main road b, the pneumatic stopping valve 201e in main road c, the pneumatic stopping valve 211a in ignition path d in main road a, and filter 203a output terminal is Bonding pressure table 202a also.
Main road a, main road b, main road c, ignition path d structure are identical, and main road a comprises pneumatic stopping valve 201e, hand stop valve 204a, pressure gauge 202b, pneumatic pressure reducer 205, safety valve 206, hand stop valve 204b, pressure gauge 202c, sonic nozzle 207, pressure transducer 208, bellows 209, hand stop valve 204c, pneumatic stopping valve 201f, pneumatic stopping valve 201g, pneumatic stopping valve 201h, one-way valve 210, filter 203b.
The end of pneumatic stopping valve 201e connects pneumatic pressure reducer 205, the other end of pneumatic pressure reducer 205 connects sonic nozzle 207, be provided with hand stop valve 204a between pneumatic stopping valve 201e and pneumatic pressure reducer 205, Bonding pressure table 202b also, be provided with safety valve 206 and hand stop valve 204b between pneumatic pressure reducer 205 and sonic nozzle 207, hand stop valve 204b is Bonding pressure table 202c also, the other end of sonic nozzle 207 connects bellows 209, be provided with pressure transducer 208 and hand stop valve 204c between sonic nozzle 207 and bellows 209, hand stop valve 204c also connects pneumatic stopping valve 201f, the other end of bellows 209 connects the end of pneumatic stopping valve 201g, the other end of pneumatic stopping valve 201g connects the input end of filter 203b, the output terminal connecting engine thrust chamber 401 of filter 203b, be provided with one-way valve 210 between pneumatic stopping valve 201g and filter 203b, one-way valve 210 also connects pneumatic stopping valve 201h.
The output terminal connecting engine thrust chamber 401 of main road b middle filtrator 203b, the output terminal of main road c middle filtrator 203b is connecting engine thrust chamber 401 also.
Ignition path d comprises pneumatic stopping valve 211a, hand stop valve 213a, pressure gauge 212a, pneumatic pressure reducer 214, safety valve 215, hand stop valve 213b, pressure gauge 212b, sonic nozzle 216, pressure transducer 217, bellows 218, hand stop valve 213c, pneumatic stopping valve 211b, pneumatic stopping valve 211c, pneumatic stopping valve 211d, one-way valve 219, filter 220.
The end of pneumatic stopping valve 211a connects pneumatic pressure reducer 214, the other end of pneumatic pressure reducer 214 connects sonic nozzle 216, be provided with hand stop valve 213a between pneumatic stopping valve 211a and pneumatic pressure reducer 214, Bonding pressure table 212a again, be provided with safety valve 215 and hand stop valve 213b between pneumatic pressure reducer 214 and sonic nozzle 216, hand stop valve 213b is Bonding pressure table 212b also, the other end of sonic nozzle 216 connects bellows 218, be provided with pressure transducer 217 and hand stop valve 213c between sonic nozzle 216 and bellows 218, hand stop valve 213c also connects pneumatic stopping valve 211b, the other end of bellows 218 connects the end of pneumatic stopping valve 211c, the other end of pneumatic stopping valve 211c connects the input end of filter 220, the output terminal connecting engine igniter 402 of filter 220, be provided with one-way valve 219 between pneumatic stopping valve 211c and filter 220, one-way valve 219 also connects pneumatic stopping valve 211d.
The major function of oxygen transport system is the normal transport process that guarantees oxygen medium in oxygen system, thereby reaches the Real-Time Monitoring of oxygen medium and the ability of regulation and control.The oxygen transport system adopts the arranging scheme of three main roads (main road a, main road b, main road c) and an ignition path d, and main road mainly is to provide the primary oxidant that engine test needs, and requirement is that supply flow is larger, and control accuracy is lower.Article three, main road adopts the different size parameter, can be applicable to like this supply requirement under general flow, during on the one hand as the king-sized traffic requirement of needs, can adopt two main roads or three methods that main road is worked simultaneously, can avoid like this changing the complex process of pipeline size because a main road can't meet the demands, on the other hand, if adopt larger pipeline caliber, can cause the index of bulk testing system cost to rise, be mainly that the raising of valve type price is larger, do not meet the requirement of Economy.Ignition path d mainly is to provide the oxygenant that 402 igniting of engine ignition device need, and requirement is that supply flow is less, and control accuracy is high.The process of big-block engine igniting is all generally to need a less engine ignition device of flow to be lighted a fire, and then big-block engine is lighted a fire.That in each shunt, adopt is all twice pneumatic stopping valve (201e and 201g, 211a and 211c) principle controlled, such setting principle can be situated between some adjusting devices are set, such as pneumatic pressure reducer (205,214) and sonic nozzle (207,216) etc.Wherein the major function of pneumatic pressure reducer (205,214) is that the unsettled gas of upstream pressure is carried out to decompression operation, and the gas pressure value decompression is reached to a stable state, meets the requirement of follow-up deliverability.The major function of sonic nozzle (207,216) is controlled the flow in the gas flow process, and it has, and degree of regulation is high, and modification stability is good, and advantage for convenience detach is that piping flow is regulated indispensable components and parts.
Distribution platform 3 comprises that hand stop valve 301a, filter 302, hand stop valve 301b, pressure gauge 303a, main road a pneumatic pressure reducer control branch road, main road b pneumatic pressure reducer are controlled branch road, main road c pneumatic pressure reducer is controlled branch road, ignition path d pneumatic pressure reducer control branch road, pneumatic stopping valve control road, swept-off gases's control road.
Nitrogen pipeline connects the input end of filter 302 by hand stop valve 301a, the output terminal of filter 302 connects respectively main road a pneumatic pressure reducer and controls the hand stop valve 301c of the hand stop valve 301c of the hand stop valve 301c of branch road, main road b pneumatic pressure reducer control branch road, main road c pneumatic pressure reducer control branch road, the hand stop valve 301f that ignition path d pneumatic pressure reducer is controlled branch road, the hand stop valve 301i that pneumatic stopping valve is controlled road, is provided with hand stop valve 301b and pressure gauge 303a after the output terminal of filter 302.
It is identical that main road a pneumatic pressure reducer is controlled branch road, main road b pneumatic pressure reducer control branch road, main road c pneumatic pressure reducer control branch road, ignition path d pneumatic pressure reducer control branch road, pneumatic stopping valve is controlled line structure.
Main road a pneumatic pressure reducer is controlled branch road and is comprised hand stop valve 301c, hand adjustment decompressor 304a, hand stop valve 301d, pressure gauge 303b, hand stop valve 301e.
Hand stop valve 301c connects the end of hand adjustment decompressor 304a, the other end of hand adjustment decompressor 304a connects hand stop valve 301e, be provided with hand stop valve 301d and pressure gauge 303b between hand adjustment decompressor 304a and hand stop valve 301e, the other end of the hand stop valve 301e of main road a pneumatic pressure reducer control branch road connects the pneumatic pressure reducer 205 of main road a, the other end of the hand stop valve 301e of main road b pneumatic pressure reducer control branch road connects the pneumatic pressure reducer 205 of main road b, the other end of the hand stop valve 301e of main road c pneumatic pressure reducer control branch road connects the pneumatic pressure reducer 205 of main road c.
Ignition path d pneumatic pressure reducer is controlled branch road and is comprised hand stop valve 301f, hand adjustment decompressor 304b, hand stop valve 301g, pressure gauge 303c, hand stop valve 301h.Hand stop valve 301f connects the end of hand adjustment decompressor 304b, the other end of hand adjustment decompressor 304b connects hand stop valve 301h, be provided with hand stop valve 301g and pressure gauge 303c between hand adjustment decompressor 304b and hand stop valve 301h, the other end of the hand stop valve 301h of ignition path d pneumatic pressure reducer control branch road connects the pneumatic pressure reducer 214 of ignition path d.
Pneumatic stopping valve is controlled road and is comprised hand stop valve 301i, hand adjustment decompressor 304c, hand stop valve 301j, pressure gauge 303d, hand stop valve 301k, small-sized air chamber 305.
Hand stop valve 301i connects the end of hand adjustment decompressor 304c, the other end of hand adjustment decompressor 304c connects hand stop valve 301k, be provided with hand stop valve 301j and pressure gauge 303d between hand adjustment decompressor 304c and hand stop valve 301k, the input end of the other end connecting small-sized air chamber 305 of hand stop valve 301k, the output terminal of small-sized air chamber 305 connects each pneumatic stopping valve (108,201a～201h, 211a～211d), wherein in legend, only having shown the part annexation, is mainly in order to guarantee the carefully and neatly done of whole schematic diagram.
Swept-off gases controls road and comprises hand stop valve 301l, hand adjustment decompressor 304d, hand stop valve 301m, pressure gauge 303e, hand stop valve 301n.
Hand stop valve 301l mono-end connects nitrogen pipeline, the other end connects hand adjustment decompressor 304d, the other end of hand adjustment decompressor 304d connects hand stop valve 301n, the other end of hand stop valve 301n connects blowing/nitrogen suction port, blowing/nitrogen suction port and pneumatic stopping valve (201d, 201h, 211d) connect, be provided with hand stop valve 301m and pressure gauge 303e between hand adjustment decompressor 304d and hand stop valve 301n.
The whole control procedure of distribution platform 3 has adopted nitrogen as regulation and control gas, and it is not strong that nitrogen has chemism, and dangerous low advantage, can realize ensureing the requirement of operator safety like this.The major function of distribution platform 3 is 1. by adjusting hand adjustment decompressor (304a～304b) outlet pressure value, to regulate and control the outlet pressure value of pneumatic pressure reducer in the oxygen transport system (205,214).Wherein the outlet pressure value of the outlet pressure value of hand adjustment decompressor (304a～304b) and pneumatic pressure reducer (205,214) is proportionate relationship, corresponding one by one.Gas is controlled its outlet pressure value after entering pneumatic pressure reducer (205,214), and the gas entered or not in main line, and after whole test is complete, pneumatic pressure reducer (205,214) carries out bleed air operation voluntarily.2. control the pneumatic stopping valve (108,201a～201h, 211a～211d) in the oxygen supply system, for it provides control gas.The control of pneumatic stopping valve (108,201a～201h, 211a～211d) is that the gas by having the certain pressure value is controlled, after gas enters pneumatic stopping valve (108,201a～201h, 211a～211d), open valve by its force value, thereby control the opening procedure of pneumatic stopping valve (108,201a～201h, 211a～211d), if carry out bleed air operation, pneumatic stopping valve (108,201a～201h, 211a～211d) is closed automatically.The major function of small-sized air chamber (305) is to maintain the pressure stability of controlling gas, reaches so the requirement of steady control pneumatic stopping valve (108,201a～201h, 211a～211d).3. the pipeline of oxygen transport system blown down to operation, distribution platform 3 blows down the pneumatic stopping valve (201d, 201h, 211d) that the pipeline end connects each control.
Working procedure:
Different compound modes is arranged in actual use due to the oxygen transport system, and the present invention adopts a main road a and with an ignition path, actual implementation process is described.Corresponding distribution platform system also only adopts relevant branch road that the implementation process of distribution platform is described.
Test is divided into preparatory stage, experimental stage, stopping phase.
In the preparatory stage, we need to guarantee that following task is completed.1. guarantee that oxygen source system works completes, and is about to be filled with the oxygen medium in high pressure oxygen storage tank 109.2. the force value after the outlet of the hand adjustment decompressor (304a～304b) in the distribution platform is adjusted to suitable position, the force value of its outlet directly with main line in pneumatic pressure reducer (205 accordingly, 214) match, force value after hand adjustment decompressor 304c outlet and each pneumatic stopping valve (108 in the oxygen supply system, 201a～201h, 211a～211d) match, the major function of hand adjustment decompressor 304d is to provide swept-off gases's pressure.3. the related device in the oxygen transport system is checked and debugged.
Carry out origin system for oxygen, we need to check that hand stop valve (101a～101i) is all in closed condition, and pneumatic stopping valve 108 is in closed condition, and the registration of pressure transducer 106 and pressure gauge (104a～104b) is normal.Next open hand stop valve 101d, liquid oxygen directly enters in low-pressure liquid oxygen storage tank 102 and is stored from hand stop valve 101d, closes hand stop valve 101d after input.Open hand stop valve 101c, hand stop valve 101f, hand stop valve 101h, open liquid oxygen pump 105, and the liquid oxygen of outflow is carried out to pressurized operation, the force value by pressure transducer 106 after real-time monitoring liquid oxygen pump 105.Liquid oxygen after pressurization enters in vaporizer 107, the operation of vaporizing, last from vaporizer 107 out be high pressure oxygen.Open pneumatic stopping valve 108, the high pressure oxygen so far be disposed enters high pressure oxygen storage tank 109.After 109 fillings of high pressure oxygen storage tank are complete, stop immediately liquid oxygen pump 105 work, close hand stop valve 101h, pneumatic stopping valve 108, hand stop valve 101f and hand stop valve 101c, open hand stop valve 101g, emits the residual high pressure oxygen in vaporizer 107 the insides.Open hand stop valve 101e, emit the oxygen medium retained between hand stop valve 101c and hand stop valve 101f.Open hand stop valve 101a, low-pressure liquid oxygen storage tank 102 is carried out to the pressure release operation, after pressure gauge 104a registration reaches rational scope, close hand stop valve 101a, so far, the oxygen supply system works is complete, has completed the gas replenishment process to high pressure oxygen storage tank 109.
At oxygen, come in origin system, the process that becomes high pressure air oxygen from low-pressure liquid oxygen has been experienced in the preparation of oxygen.Wherein the control of pressure is important content, is chosen in liquid oxygen pump 105 back here and has arranged pressure transducer 106, and do not select general pressure gauge, can realize so remote monitoring, prevents the potential risk of hyperbaric environment to personnel.For low-pressure liquid oxygen storage tank 102, safety valve 103a has been installed on its outer wall, pressure gauge 104a and hand stop valve 101b, if its working procedure is that the force value of pressure gauge 104a is higher under off working state, operator manually control hand stop valve 101b, the pressure release of being exitted operation, if low-pressure liquid oxygen storage tank 102 overpressure, safety valve 103a opens the releasing pressure automatically bleed air operation.This process is equally applicable to high pressure oxygen storage tank 109 and attached hand stop valve 101i, pressure gauge 104b and the working procedure of safety valve 103b.
For distribution platform 3, at first check hand stop valve (301a～301n), guarantee that it is all in closed condition.Check the registration value of pressure gauge (303a～303e), guarantee that it is in dead-center position.Next open hand stop valve 301a, observe pressure gauge 303a registration value, generally need to meet distribution platform suction port pressure size.Next open hand stop valve 301c, hand stop valve 301f and hand stop valve 301i, the outlet pressure value of manual tune hand adjustment decompressor 304a, mainly to observe the registration size of adjusting by pressure gauge 303b, it is corresponding one by one that the outlet pressure value of hand adjustment decompressor 304a and the outlet pressure value of the pneumatic pressure reducer 205 in the oxygen transport system are, ratio is amplified relation, and the outlet pressure value of therefore regulating hand adjustment decompressor 304a needs accurate especially.Open hand stop valve 301e, air-flow arrives the inside of pneumatic pressure reducer 205 and does not enter in main line a.So far the distribution platform is complete to the adjusting of the pneumatic pressure reducer 205 in the oxygen transport system.The outlet pressure value of same manual tune hand adjustment decompressor 304b, mainly to observe the registration size of adjusting by pressure gauge 303c, it is corresponding one by one that the outlet pressure value of hand adjustment decompressor 304b and the outlet pressure value of the pneumatic pressure reducer 214 in the oxygen transport system are, ratio is amplified relation, and the outlet pressure value of therefore regulating hand adjustment decompressor 304b needs accurate especially.Open hand stop valve 301h, air-flow arrives the inside of pneumatic pressure reducer 214 and does not enter in ignition path d.So far the distribution platform is complete to the adjusting of the pneumatic pressure reducer 214 in the oxygen transport system.Next regulate hand adjustment decompressor 304c, according to the registration size of pressure gauge 303d, control its regulating degree, the gas pressure size that the size of adjusting is main and each pneumatic stopping valve (108,201a～201h, 211a～211d) switching station needs is relevant.Then open hand stop valve (301k), air-flow enters small-sized air chamber 305, then enters each pneumatic stopping valve (108,201a～201h, 211a～211d) inside, and does not enter in its pipeline.In legend, all do not paint out small-sized air chamber 305 and each pneumatic stopping valve (108,201a～201h, 211a～211d) annexation between, be mainly guarantee whole schematic diagram attractive in appearance, therefore only with the part pneumatic stopping valve, carried out annexation in the drawings.So far the adjusting task of each pneumatic stopping valve in the oxygen transport system (108,201a～201h, 211a～211d) completed.Next open hand stop valve 301l, the outlet pressure value size of manual tune hand adjustment decompressor 304d, according to pressure gauge, 303e is judged.Open hand stop valve 301n, pipeline is follow-up carries out annexation with pneumatic stopping valve (201d, 201h, 211d), and the task of so far swept-off gases of pipeline being regulated is complete.
For the oxygen transport system, at first check that hand stop valve (204a～204c, 213a～213c) is in open mode.Pressure gauge (202a～202c, 212a～212b) registration is normal, and force value is greater than zero, guarantees that the pipeline inner sustain is greater than the state of external atmosphere pressure, prevents that in process of the test, the phenomenon flow backwards occurs gas.So far complete to the inspection of oxygen transport system.Arrive complete to the preparatory work of whole pilot system here.
Below start to carry out experimental stage.
At first open pneumatic stopping valve 201b, approach a half of the registration of pressure gauge 104b in the registration value of pressure gauge 202a, open pneumatic stopping valve 201a, air-flow arrives pneumatic stopping valve (201e by filter 203a, front end 211a), at first regulate ignition path d, open pneumatic stopping valve 211a, air-flow is successively by the decompression of pneumatic pressure reducer 214, sonic nozzle 216 is controlled the effect of flow, arrive pneumatic stopping valve 211c front end, open pneumatic stopping valve 211c, air-flow is by the filtration of filter 220, enter in engine ignition device 401, reacted with fuel wherein the release heat of catching fire.Next regulate main road a, open pneumatic stopping valve 201e, air-flow is successively by the decompression of pneumatic pressure reducer 205, sonic nozzle 207 is controlled the effect of flow, arrive pneumatic stopping valve 201g, front end, open pneumatic stopping valve 201g, air-flow, by the filtration of filter 203b, enters in motor power chamber 401.So far motor starts to start normally test, because said process is disposable working procedure, in order to meet the reusable requirement of motor, need to carry out for several times continuous working procedure to whole pilot system, this wherein can be lighted a fire to engine ignition device 402 supplying medias by continuous switch pneumatic stopping valve 211c, switch pneumatic stopping valve 201g comes to motor power chamber 401 supply oxygenants, carry out the normal test run of motor, thereby reach the performance index of relight.
Need constantly to note the registration value of pressure gauge (202a～202c, 212a～212b) in process of the test, guarantee that its registration is stable and reach rational test parameters requirement.Pressure gauge (202a～202c, 212a～212b) in manipulation of physical, instrument panel is installed in distribution platform 3, can guarantee that like this distribution platform 3 operator and test gas are isolated, facilitate reading out data, distribution platform 3 is general and test main road at a distance of a segment distance, has improved like this Safety performance of pilot system.Pressure gauge (202b～202c, 212a～212b) front end has been installed respectively a hand stop valve (204a～204b, 213a～213b), main function is for pressure gauge (202b～202c for convenience detach, 212a～212b), the danger that can come by the hand stop valve (204a～204b, 213a～213b) of front end isolated pipe inner high voltage gas to bring dismounting.All having adopted the structure of bellows (209,218) in main road a and ignition path d, is mainly the stress that bellows can be offset part pipeline inside, reduces the pipeline impact that measurement brings on motor power.The Main Function of pressure transducer (208,217) is the real-time remote computer that passes to by pressure parameter, and operator confirm whether data meet the demands.Can produce strong oxidizability under the state of consideration oxygen high pressure, therefore for pipeline and the accessory requirement thereof of test, take strict oil removing measure.
After the test that motor successfully is correlated with, finally enter the stopping phase of pilot system.
At first the oxygen transport system is carried out to shut-down operation.Close pneumatic stopping valve 201a and pneumatic stopping valve 201b, the supply of cutoff high oxygen storage tank 109 to each branch road.Adjust the outlet pressure value of hand adjustment decompressor 304a and hand adjustment decompressor 304b, purpose is that pneumatic pressure reducer 205 and pneumatic pressure reducer 214 are carried out to bleed air operation.Then close pneumatic stopping valve 211c, open pneumatic stopping valve 211d, start the measure that pneumatic stopping valve 211c is blown down to the pipeline of engine ignition device 402, play the result of oxygen being discharged to ignition path d.Then close pneumatic stopping valve 201g, open pneumatic stopping valve 201h, start the measure that pneumatic stopping valve 201g is blown down to the pipeline of motor power chamber 401, play the result of oxygen being discharged to main road a.Then open pneumatic stopping valve 201f, pneumatic stopping valve 211b and pneumatic stopping valve 201d, start the pipeline before pneumatic stopping valve 201g and pneumatic stopping valve 211c is blown down to operation.After controlling certain blowing time, pressure gauge 202b registration is closed pneumatic stopping valve 201e after being greater than zero, after pressure gauge 212a registration is greater than zero, closes pneumatic stopping valve 211a equally.Then open pneumatic stopping valve 201c, the pipeline between pneumatic stopping valve 201e and pneumatic stopping valve 201a is blown down to operation.After controlling the relevant blowing time, pressure gauge 202a registration is greater than zero, closes pneumatic stopping valve 201c, closes immediately pneumatic stopping valve 201d, keeps the inner state in positive pressure constantly of pipeline.So far, to the end of operation of oxygen transport system.
Then distribution platform 3 is carried out to shut-down operation.Close hand stop valve 301a and hand stop valve 301l, the source nitrogen supply of blocking-up to whole distribution platform 3.Close hand stop valve 301e, hand stop valve 301h, hand stop valve 301k and hand stop valve 301n, hand stop valve 301c, hand stop valve 301f, hand stop valve 301i, open hand stop valve 301d, hand stop valve 301g, hand stop valve 301j and hand stop valve 301m, the pipeline internal gas is carried out to bleed air operation.Open hand stop valve 301b, pipeline between hand stop valve 301a and hand stop valve 301c is carried out to bleed air operation, after venting, close hand stop valve 301b, hand stop valve 301d, hand stop valve 301g, hand stop valve 301j and hand stop valve 301m.So far, complete to the shut-down operation of distribution platform 3.The working procedure of whole pilot system is complete.
Claims (1)
1. one kind for the oxygen supply system of reusing engine test, comprises that oxygen comes origin system, oxygen transport system and distribution platform (3);
Oxygen comes origin system to comprise hand stop valve (101a～101h), low-pressure liquid oxygen storage tank (102), safety valve (103a, 103b), pressure gauge (104a, 104b), liquid oxygen pump (105), pressure transducer (106), vaporizer (107), pneumatic stopping valve (108), high pressure oxygen storage tank (109) and pipeline;
The input of low-pressure liquid oxygen storage tank (102) connects loading line, the loading line bypass is provided with hand stop valve (101a), the top of low-pressure liquid oxygen storage tank (102) is by threeway, difference connection safety valve (103a), hand stop valve (101b), pressure gauge (104a), the output of low-pressure liquid oxygen storage tank (102) connects liquid oxygen pump (105) by hand stop valve (101c), low-pressure liquid oxygen storage tank (102) also connects a hand stop valve (101d), the other end of liquid oxygen pump (105) connects the input end of vaporizer (107) by hand stop valve (101f), liquid oxygen pump (105) also connects a hand stop valve (101e), between liquid oxygen pump (105) and hand stop valve (101f), be provided with pressure transducer (106), the output terminal of vaporizer (107) connects hand stop valve (101h) by pneumatic stopping valve (108), connect again high pressure oxygen storage tank (109), vaporizer (107) also connects a hand stop valve (101g), high pressure oxygen storage tank (109) connects a hand stop valve (101i), high pressure oxygen storage tank (109) also connects a safety valve (103b), be provided with pressure gauge (104b) between safety valve (103b) and high pressure oxygen storage tank (109), the output of high pressure oxygen storage tank (109) connects respectively pneumatic stopping valve (201a) and pneumatic stopping valve (201b),
The oxygen transport system comprises pneumatic stopping valve (201a～201d), filter (203a), pressure gauge (202a), main road a, main road b, main road c, ignition path d;
One end of pneumatic stopping valve (201a) connects high pressure oxygen storage tank (109), the other end connects the input end of filter (203a), a three-way valve is installed from high pressure oxygen storage tank (109) export pipeline, drawing a pipeline is connected with pneumatic stopping valve (201b) input end, equally from the export pipeline of pneumatic stopping valve (201a), three-way valve is installed in appropriate location, with pneumatic stopping valve (201c) input end, with pneumatic stopping valve (201d) input end, is connected respectively; The output terminal of filter (203a) connects respectively pneumatic stopping valve (201e) in main road a, the pneumatic stopping valve (201e) in main road b, the pneumatic stopping valve (201e) in main road c, the pneumatic stopping valve (211a) in ignition path d, and filter (203a) output terminal is Bonding pressure table (202a) also;
Main road a, main road b, main road c, ignition path d structure are identical, and main road a comprises pneumatic stopping valve (201e), hand stop valve (204a), pressure gauge (202b), pneumatic pressure reducer (205), safety valve (206), hand stop valve (204b), pressure gauge (202c), sonic nozzle (207), pressure transducer (208), bellows (209), hand stop valve (204c), pneumatic stopping valve (201f), pneumatic stopping valve (201g), pneumatic stopping valve (201h), one-way valve (210), filter (203b);
One end of pneumatic stopping valve (201e) connects pneumatic pressure reducer (205), the other end of pneumatic pressure reducer (205) connects sonic nozzle (207), be provided with hand stop valve (204a) between pneumatic stopping valve (201e) and pneumatic pressure reducer (205), Bonding pressure table (202b) also, be provided with safety valve (206) and hand stop valve (204b) between pneumatic pressure reducer (205) and sonic nozzle (207), hand stop valve (204b) is gone back Bonding pressure table (202c), the other end of sonic nozzle (207) connects bellows (209), be provided with pressure transducer (208) and hand stop valve (204c) between sonic nozzle (207) and bellows (209), hand stop valve (204c) also connects pneumatic stopping valve (201f), the other end of bellows (209) connects an end of pneumatic stopping valve (201g), the other end of pneumatic stopping valve (201g) connects the input end of filter (203b), the output terminal connecting engine thrust chamber (401) of filter (203b), be provided with one-way valve (210) between pneumatic stopping valve (201g) and filter (203b), one-way valve (210) also connects pneumatic stopping valve (201h),
The output terminal connecting engine thrust chamber (401) of main road b middle filtrator (203b), the output terminal of main road c middle filtrator (203b) is connecting engine thrust chamber (401) also, the output terminal connecting engine igniter (402) of ignition path d middle filtrator (220);
Distribution platform (3) comprises that hand stop valve (301a), filter (302), hand stop valve (301b), pressure gauge (303a), main road a pneumatic pressure reducer control branch road, main road b pneumatic pressure reducer are controlled branch road, main road c pneumatic pressure reducer is controlled branch road, ignition path d pneumatic pressure reducer control branch road, pneumatic stopping valve control road, swept-off gases's control road;
Nitrogen pipeline connects the input end of filter (302) by hand stop valve (301a), the output terminal of filter (302) connects respectively the hand stop valve (301c) that main road a pneumatic pressure reducer is controlled branch road, main road b pneumatic pressure reducer is controlled the hand stop valve (301c) of branch road, main road c pneumatic pressure reducer is controlled the hand stop valve (301c) of branch road, ignition path d pneumatic pressure reducer is controlled the hand stop valve (301f) of branch road, pneumatic stopping valve is controlled the hand stop valve (301i) on road, be provided with hand stop valve (301b) and pressure gauge (303a) after the output terminal of filter (302),
It is identical that main road a pneumatic pressure reducer is controlled branch road, main road b pneumatic pressure reducer control branch road, main road c pneumatic pressure reducer control branch road, ignition path d pneumatic pressure reducer control branch road, pneumatic stopping valve is controlled line structure;
Main road a pneumatic pressure reducer is controlled branch road and is comprised hand stop valve (301c), hand adjustment decompressor (304a), hand stop valve (301d), pressure gauge (303b), hand stop valve (301e);
Hand stop valve (301c) connects an end of hand adjustment decompressor (304a), the other end of hand adjustment decompressor (304a) connects hand stop valve (301e), be provided with hand stop valve (301d) and pressure gauge (303b) between hand adjustment decompressor (304a) and hand stop valve (301e), the other end of the hand stop valve (301e) of main road a pneumatic pressure reducer control branch road connects the pneumatic pressure reducer (205) of main road a, the other end of the hand stop valve (301e) of main road b pneumatic pressure reducer control branch road connects the pneumatic pressure reducer (205) of main road b, the other end of the hand stop valve (301e) of main road c pneumatic pressure reducer control branch road connects the pneumatic pressure reducer (205) of main road c, the other end of the hand stop valve (301h) of ignition path d pneumatic pressure reducer control branch road connects the pneumatic pressure reducer (214) of ignition path d,
The input end of the other end connecting small-sized air chamber (305) of the hand stop valve (301k) on pneumatic stopping valve control road, the output terminal of small-sized air chamber (305) connects each pneumatic stopping valve (108,201a～201h, 211a～211d);
Swept-off gases controls road and comprises hand stop valve (301l), hand adjustment decompressor (304d), hand stop valve (301m), pressure gauge (303e), hand stop valve (301n);
Hand stop valve (301l) end connects nitrogen pipeline, the other end connects hand adjustment decompressor (304d), the other end of hand adjustment decompressor (304d) connects hand stop valve (301n), the other end of hand stop valve (301n) connects blowing/nitrogen suction port, blowing/nitrogen suction port and pneumatic stopping valve (201d, 201h, 211d) connect, be provided with hand stop valve (301m) and pressure gauge (303e) between hand adjustment decompressor (304d) and hand stop valve (301n).
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