CN103486437B - Oxygen supply system for engine reusing test - Google Patents
Oxygen supply system for engine reusing test Download PDFInfo
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- CN103486437B CN103486437B CN201310403289.7A CN201310403289A CN103486437B CN 103486437 B CN103486437 B CN 103486437B CN 201310403289 A CN201310403289 A CN 201310403289A CN 103486437 B CN103486437 B CN 103486437B
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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 airspace engine technical field, specifically, it is high to be that one has safety coefficient, and control accuracy is high, can realize the oxygen supply system of Long-distance Control performance.
Background technology
At present reusing airspace engine test field, require supply system can for a long time repeatedly carry out propellant feed.The realization of propellant-feed system is the guarantee successfully carrying out engine test, and wherein the design of oxygenant supply system is an important content.The oxygenant that oxygen is commonly used as a class, occupies an important position in engine propellant field.In engine test process, the supply of oxygen maintains the state of high pressure, now oxygen has strong oxidizing property, in swiftly flowing process, greasy dirt easily and in pipeline, there is spontaneous combustion in Ester friction, thus it is dangerous that test occurs, and therefore oxygen supply system becomes a difficult point in test overal system design.
At present in the domestic process carrying out design oxygen test system, some directly uses welding bottle group to carry out air feed to high pressure oxygen storage tank, owing to there being higher restrictive condition (specifically can refer to " Code for design of oxygen station " GB50030-2007) to high pressure oxygen flow velocity, the mode of so direct supply is easily caused danger and wastes low oxygen.For the adjustment of decompressor in the main feeding pipe of pilot system, way general is at present placed directly in by decompressor in distribution platform, manually regulate the exit pressure levels of decompressor, because needs operating personnel carry out work at distribution platform, the personnel that cause like this contact with test the direct of working medium, and the safety for operating personnel defines certain threat.For the control of oxygen gas flow rate, be also an important problem place at present.
Summary of the invention
The object of the invention is, in order to solve above-mentioned produced problem, to propose a kind of safety coefficient high, can the oxygen supply system of accurate control test system parameter, carry out reusing engine test for safety and provide a feasible scheme.
The present invention is a kind of oxygen supply system for reusing engine test, comprises oxygen sources system, oxygen transport system and distribution platform.
The invention has the advantages that:
(1), in oxygen sources system of the present invention, have employed the process being carried out Preparation of oxygen by the method for vaporization of liquid oxygen, improve the utilization factor of liquid oxygen raw material.By the real-time monitoring of pressure transducer, the safety achieving whole process is carried out;
(2) in oxygen transport system of the present invention, done some measures about the flow velocity controlling oxygen pipeline, adopt 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, reasonable effect can be had to reduction high pressure oxygen flow velocity like this;
(3), in oxygen transport system of the present invention, have employed the scheme of three main roads and an ignition path.Pipeline reasonably can be selected to combine according to the requirement of test.The sufficient like this utilization factor that improve pipe system, preventing single line to adapt to, different tests requires and shortcoming that the control accuracy that causes is lower;
(4) in oxygen transport system of the present invention, the regulative mode of decompressor takes remote control and regulation mode comparatively advanced at present, regulated the decompressor in main supply line by the secondary decompressor in distribution platform, both exit pressure levels are one_to_one corresponding, in scale amplifying.Can achieve like this operating personnel and test working medium away from, ensure testing crew safety;
(5), in oxygen transport system of the present invention, adopt twice pneumatic stopping valve to regulate and control pipeline, can measure the parameter in system fully and control.Between twice valve, pressure size measured by setting pressure table and pressure transducer, and install the uninterrupted that sonic nozzle carrys out pilot piping, pneumatic pressure reducer carrys out the size of the pressure in pilot piping.Such arrangement mode can improve the controllability of system greatly;
(6) in oxygen transport system of the present invention, have employed the scheme adding hand stop valve in tensimeter front end, the detachable performance of system equipment can be improved like this;
(7) in oxygen transport system of the present invention, be provided with filter for installation at the position of its key, ensure that the cleanliness factor 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 internal system test;
(9), in distribution platform of the present invention, adopt small-sized air chamber to pressure required for the switching manipulation maintaining pneumatic stopping valve, broken away from the shortcoming being maintained pressure needed for pneumatic stopping valve and build-up of pressure instability in general design by gas in pipeline;
(10) in oxygen supply system of the present invention, for the continuous test run task reusing engine, the shutoff operation that have employed one pneumatic stopping valve carries out gas medium supply to engine and controls, due to the remote control ability of pneumatic stopping valve, the continued operation performance of the system that improves fabulous like this and security.
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-tensimeter 104b-tensimeter 105-liquid oxygen pump
106-pressure transducer 107-carburetor 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-tensimeter 202b-tensimeter 202c-tensimeter
203a-filtrator 203b-filtrator 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-corrugated tube 210-retaining valve 211a-pneumatic stopping valve
211b-pneumatic stopping valve 211c-pneumatic stopping valve 211d-pneumatic stopping valve
212a-tensimeter 212b-tensimeter 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-corrugated tube 219-retaining valve 220-filtrator
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-filtrator
303a-tensimeter 303b-tensimeter 303c-tensimeter
303d-tensimeter 303e-tensimeter 304a-hand adjustment decompressor
304b-hand adjustment decompressor 304c-hand adjustment decompressor 304d-hand adjustment decompressor
305-small-sized air chamber 3-distribution platform 401-motor power room
402-engine ignition
Embodiment
Below in conjunction with drawings and Examples, the present invention is described in further detail.
For the oxygen supply system reusing engine test, as shown in Figure 1, oxygen sources system, oxygen transport system and distribution platform 3 is comprised.
Oxygen sources system comprises hand stop valve (101a ~ 101h), low-pressure liquid oxygen storage tank 102, safety valve (103a, 103b), tensimeter (104a, 104b), liquid oxygen pump 105, pressure transducer 106, carburetor 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, loading line bypass is provided with hand stop valve 101a, threeway is passed through on the top of low-pressure liquid oxygen storage tank 102, connection safety valve 103a respectively, hand stop valve 101b, tensimeter 104a, the output manually stop valve 101c connection liquid oxygen pump 105 of low-pressure liquid oxygen storage tank 102, low-pressure liquid oxygen storage tank 102 also connects a hand stop valve 101d, the other end of liquid oxygen pump 105 manually stop valve 101f connects the input end of carburetor 107, 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 carburetor 107 connects hand stop valve 101h by pneumatic stopping valve 108, connect high pressure oxygen storage tank 109 again, carburetor 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, tensimeter 104b is provided with between safety valve 103b and high pressure oxygen storage tank 109, the output of high pressure oxygen storage tank 109 connects pneumatic stopping valve 201a and pneumatic stopping valve 201b respectively.
The main function of oxygen sources system provides oxygen sources to high pressure oxygen storage tank 109.The major way of Preparation of oxygen provides liquid oxygen medium by low-pressure liquid oxygen storage tank 102.By gases at high pressure, liquid oxygen is squeezed out 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 carburetor 107, form high pressure oxygen, the direct like this high pressure oxygen storage tank 109 that can enter into is filled.
Oxygen transport system comprises pneumatic stopping valve (201a ~ 201d), filtrator 203a, tensimeter 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 filtrator 203a, from high pressure oxygen storage tank 109 export pipeline, a T-valve is installed, draw a pipeline to be connected with pneumatic stopping valve 201b input end, same from the export pipeline of pneumatic cut-off 201a, T-valve is installed in appropriate location, is connected respectively with pneumatic stopping valve 201c input end and pneumatic stopping valve 201d input end.The output terminal of filtrator 203a connects the pneumatic stopping valve 201e in the pneumatic stopping valve 201e in main road a, the pneumatic stopping valve 201e in main road b, main road c, the pneumatic stopping valve 211a in ignition path d, filtrator 203a output terminal also Bonding pressure table 202a respectively.
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, tensimeter 202b, pneumatic pressure reducer 205, safety valve 206, hand stop valve 204b, tensimeter 202c, sonic nozzle 207, pressure transducer 208, corrugated tube 209, hand stop valve 204c, pneumatic stopping valve 201f, pneumatic stopping valve 201g, pneumatic stopping valve 201h, retaining valve 210, filtrator 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, hand stop valve 204a is provided with between pneumatic stopping valve 201e and pneumatic pressure reducer 205, also Bonding pressure table 202b, safety valve 206 and hand stop valve 204b is provided with 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 corrugated tube 209, pressure transducer 208 and hand stop valve 204c is provided with between sonic nozzle 207 and corrugated tube 209, hand stop valve 204c also connects pneumatic stopping valve 201f, the other end of corrugated tube 209 connects one end of pneumatic stopping valve 201g, the other end of pneumatic stopping valve 201g connects the input end of filtrator 203b, the output terminal connecting engine thrust chamber 401 of filtrator 203b, retaining valve 210 is provided with between pneumatic stopping valve 201g and filtrator 203b, retaining valve 210 also connects pneumatic stopping valve 201h.
The output terminal also connecting engine thrust chamber 401 of output terminal connecting engine thrust chamber 401, the main road c middle filtrator 203b of main road b middle filtrator 203b.
Ignition path d comprises pneumatic stopping valve 211a, hand stop valve 213a, tensimeter 212a, pneumatic pressure reducer 214, safety valve 215, hand stop valve 213b, tensimeter 212b, sonic nozzle 216, pressure transducer 217, corrugated tube 218, hand stop valve 213c, pneumatic stopping valve 211b, pneumatic stopping valve 211c, pneumatic stopping valve 211d, retaining valve 219, filtrator 220.
One end of pneumatic stopping valve 211a connects pneumatic pressure reducer 214, the other end of pneumatic pressure reducer 214 connects sonic nozzle 216, hand stop valve 213a is provided with between pneumatic stopping valve 211a and pneumatic pressure reducer 214, Bonding pressure table 212a again, safety valve 215 and hand stop valve 213b is provided with 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 corrugated tube 218, pressure transducer 217 and hand stop valve 213c is provided with between sonic nozzle 216 and corrugated tube 218, hand stop valve 213c also connects pneumatic stopping valve 211b, the other end of corrugated tube 218 connects one end of pneumatic stopping valve 211c, the other end of pneumatic stopping valve 211c connects the input end of filtrator 220, the output terminal connecting engine lighter 402 of filtrator 220, retaining valve 219 is provided with between pneumatic stopping valve 211c and filtrator 220, retaining valve 219 also connects pneumatic stopping valve 211d.
The major function of oxygen transport system is the normal transport process ensureing oxygen medium in oxygen system, thus the ability of the Real-Time Monitoring reached oxygen medium and regulation and control.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, the primary oxidant that main road mainly provides engine test to need, and requirement is that supply flow rate is comparatively large, and control accuracy is lower.Article three, main road adopts different size parameter, the supply requirement under general flow can be applicable to like this, time on the one hand as needs king-sized traffic requirement, the method that two main roads or three main roads work simultaneously can be adopted, the complex process going because a main road cannot meet the demands to change pipeline size can be avoided like this, on the other hand, if adopt larger pipeline caliber, the index of bulk testing system cost can be caused to rise, mainly valve type price improves comparatively large, does not meet the requirement of economy.The oxygenant that ignition path d mainly provides engine ignition 402 to light a fire needs, requirement is that supply flow rate is less, and control accuracy is high.The process of big-block engine igniting is all generally that the engine ignition that needs flow is less is lighted a fire, and then lights a fire to big-block engine.That adopt in each shunt is all twice pneumatic stopping valve (201e and 201g, 211a and 211c) principle that controls, such setting principle can be situated between and arrange some adjusting devices, such as pneumatic pressure reducer (205,214) and sonic nozzle (207,216) etc.Wherein the major function of pneumatic pressure reducer (205,214) carries out decompression operation to the gas of upstream pressure instability, gas pressure value decompression reached a stable state, meets the requirement of follow-up deliverability.The major function of sonic nozzle (207,216) controls the flow in gas flow, and it is high that it has degree of regulation, and modification stability is good, advantage for convenience detach, is that piping flow regulates indispensable components and parts.
Distribution platform 3 comprises hand stop valve 301a, filtrator 302, hand stop valve 301b, tensimeter 303a, main road a pneumatic pressure reducer controlling brancher, main road b pneumatic pressure reducer controlling brancher, main road c pneumatic pressure reducer controlling brancher, ignition path d pneumatic pressure reducer controlling brancher, pneumatic stopping valve Dominating paths, swept-off gases's Dominating paths.
Nitrogen pipeline manually stop valve 301a connects the input end of filtrator 302, the output terminal of filtrator 302 connects hand stop valve 301c, the hand stop valve 301c of main road b pneumatic pressure reducer controlling brancher of main road a pneumatic pressure reducer controlling brancher, the hand stop valve 301c of main road c pneumatic pressure reducer controlling brancher, the hand stop valve 301f of ignition path d pneumatic pressure reducer controlling brancher, the hand stop valve 301i of pneumatic stopping valve Dominating paths respectively, is provided with hand stop valve 301b and tensimeter 303a after the output terminal of filtrator 302.
Main road a pneumatic pressure reducer controlling brancher, main road b pneumatic pressure reducer controlling brancher, main road c pneumatic pressure reducer controlling brancher, ignition path d pneumatic pressure reducer controlling brancher, pneumatic stopping valve Dominating paths structure are identical.
Main road a pneumatic pressure reducer controlling brancher comprises hand stop valve 301c, hand adjustment decompressor 304a, hand stop valve 301d, tensimeter 303b, hand stop valve 301e.
Hand stop valve 301c connects one end of hand adjustment decompressor 304a, the other end of hand adjustment decompressor 304a connects hand stop valve 301e, hand stop valve 301d and tensimeter 303b is provided with 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 controlling brancher 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 controlling brancher 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 controlling brancher connects the pneumatic pressure reducer 205 of main road c.
Ignition path d pneumatic pressure reducer controlling brancher comprises hand stop valve 301f, hand adjustment decompressor 304b, hand stop valve 301g, tensimeter 303c, hand stop valve 301h.Hand stop valve 301f connects one 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 tensimeter 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 controlling brancher connects the pneumatic pressure reducer 214 of ignition path d.
Pneumatic stopping valve Dominating paths comprises hand stop valve 301i, hand adjustment decompressor 304c, hand stop valve 301j, tensimeter 303d, hand stop valve 301k, small-sized air chamber 305.
Hand stop valve 301i connects one end of hand adjustment decompressor 304c, the other end of hand adjustment decompressor 304c connects hand stop valve 301k, hand stop valve 301j and tensimeter 303d is provided with between hand adjustment decompressor 304c and hand stop valve 301k, the other end of hand stop valve 301k connects the input end of small-sized air chamber 305, the output terminal of small-sized air chamber 305 connects each pneumatic stopping valve (108,201a ~ 201h, 211a ~ 211d), wherein only show part annexation in legend, mainly in order to ensure the carefully and neatly done of overall schematic diagram.
Swept-off gases's Dominating paths comprises hand stop valve 301l, hand adjustment decompressor 304d, hand stop valve 301m, tensimeter 303e, hand stop valve 301n.
Hand stop valve 301l one 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 inlet, blowing/nitrogen inlet and pneumatic stopping valve (201d, 201h, 211d) connect, be provided with hand stop valve 301m and tensimeter 303e between hand adjustment decompressor 304d and hand stop valve 301n.
The whole control procedure of distribution platform 3 have employed nitrogen as regulation and control gas, and it is not strong that nitrogen has chemical activity, dangerous low advantage, can realize the requirement ensureing operator safety like this.The major function of distribution platform 3 is the exit pressure levels 1. being regulated and controled pneumatic pressure reducer in oxygen transport system (205,214) by adjustment hand adjustment decompressor (304a ~ 304b) exit pressure levels.Wherein the exit pressure levels of hand adjustment decompressor (304a ~ 304b) and the exit pressure levels of pneumatic pressure reducer (205,214) are proportionate relationship, one_to_one corresponding.Gas enters pneumatic pressure reducer (205,214) and controls its exit pressure levels afterwards, 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. the pneumatic stopping valve (108,201a ~ 201h, 211a ~ 211d) in oxygen supply system is controlled, for it provides control gas.The control of pneumatic stopping valve (108,201a ~ 201h, 211a ~ 211d) is that the gas by having certain pressure value controls, after gas enters pneumatic stopping valve (108,201a ~ 201h, 211a ~ 211d), valve is opened by its force value, thus 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) maintains the pressure stability controlling gas, reaches the requirement steadily controlling pneumatic stopping valve (108,201a ~ 201h, 211a ~ 211d) like this.3. carry out blowing operation to the pipeline of oxygen transport system, distribution platform 3 blows down line end and connects each pneumatic stopping valve (201d, 201h, 211d) controlled.
The course of work:
Because oxygen transport system has different array modes in the use of reality, 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, shutdown phase.
In the preparatory stage, we need to ensure that following task is completed.1. ensure that oxygen sources system works completes, and is filled with oxygen medium by high pressure oxygen storage tank 109.2. the force value after hand adjustment decompressor (304a ~ 304b) outlet in distribution platform is adjusted to suitable position, the pneumatic pressure reducer (205 that its force value exported is directly corresponding to main line, 214) match, force value after hand adjustment decompressor 304c exports and each pneumatic stopping valve (108 in 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 oxygen transport system checked and debug.
For oxygen sources system, 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 tensimeter (104a ~ 104b) is normal.Next open hand stop valve 101d, liquid oxygen directly enters in low-pressure liquid oxygen storage tank 102 and stores 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, the liquid oxygen of outflow is carried out pressurized operation, by the force value after the monitoring liquid oxygen pump 105 that pressure transducer 106 is real-time.Liquid oxygen after pressurization enters in carburetor 107, carries out vaporization operation, finally from carburetor 107 out be high pressure oxygen.Open pneumatic stopping valve 108, the high pressure oxygen be so far disposed enters high pressure oxygen storage tank 109.High pressure oxygen storage tank 109 is filled complete after, stop liquid oxygen pump 105 to work immediately, close hand stop valve 101h, pneumatic stopping valve 108, hand stop valve 101f and hand stop valve 101c, opens hand stop valve 101g, releases high pressure oxygen residual inside carburetor 107.Open hand stop valve 101e, release the oxygen medium retained between hand stop valve 101c and hand stop valve 101f.Open hand stop valve 101a, pressure discharge operations is carried out to low-pressure liquid oxygen storage tank 102, after tensimeter 104a registration reaches rational scope, close hand stop valve 101a, so far, oxygen supply system works is complete, completes the gas replenishment process to high pressure oxygen storage tank 109.
In oxygen sources system, the preparation of oxygen experienced by the process becoming high pressure gas oxygen from low-pressure liquid oxygen.Wherein the control of pressure is important content, selects here to arrange pressure transducer 106 below at liquid oxygen pump 105, and does not select general tensimeter, can realize remote monitoring like this, prevent hyperbaric environment to the potential danger of personnel.For low-pressure liquid oxygen storage tank 102, safety valve 103a has been installed on its external wall, tensimeter 104a and hand stop valve 101b, if its working routine is that the force value of tensimeter 104a is higher in a non-operative state, then operating personnel's Non-follow control hand stop valve 101b, carry out venting pressure discharge operations, if low-pressure liquid oxygen storage tank 102 hypertonia, then safety valve 103a opens releasing pressure automatically bleed air operation.This process is equally applicable to the working routine of high pressure oxygen storage tank 109 and attached hand stop valve 101i, tensimeter 104b and safety valve 103b.
For distribution platform 3, first check hand stop valve (301a ~ 301n), ensure that it is all in closed condition.Check the registration value of tensimeter (303a ~ 303e), ensure that it is in null position.Next open hand stop valve 301a, observe tensimeter 303a registration value, generally demand fulfillment distribution platform inlet pressure size.Next hand stop valve 301c is opened, hand stop valve 301f and hand stop valve 301i, the exit pressure levels of manual adjustments hand adjustment decompressor 304a, the registration size of adjustment is mainly observed by tensimeter 303b, the exit pressure levels of the pneumatic pressure reducer 205 in the exit pressure levels of hand adjustment decompressor 304a and oxygen transport system is one_to_one corresponding, scale amplifying relation, therefore regulates the exit pressure levels of hand adjustment decompressor 304a to need 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 adjustment of distribution platform to the pneumatic pressure reducer 205 in oxygen transport system is complete.The exit pressure levels of same manual adjustments hand adjustment decompressor 304b, the registration size of adjustment is mainly observed by tensimeter 303c, the exit pressure levels of the pneumatic pressure reducer 214 in the exit pressure levels of hand adjustment decompressor 304b and oxygen transport system is one_to_one corresponding, scale amplifying relation, therefore regulates the exit pressure levels of hand adjustment decompressor 304b to need 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 adjustment of distribution platform to the pneumatic pressure reducer 214 in oxygen transport system is complete.Following adjustment hand adjustment decompressor 304c, the registration size according to tensimeter 303d controls its regulating degree, and the size of adjustment gaseous tension size that is main and each pneumatic stopping valve (108,201a ~ 201h, 211a ~ 211d) switching station need is correlated with.Then open hand stop valve (301k), air-flow enters small-sized air chamber 305, then it is inner to enter each pneumatic stopping valve (108,201a ~ 201h, 211a ~ 211d), and does not enter in its pipeline.All not paint out in legend small-sized air chamber 305 and each pneumatic stopping valve (108,201a ~ 201h, 211a ~ 211d) between annexation, mainly ensure the attractive in appearance of overall schematic diagram, therefore only carried out annexation with partial pneumatic stop valve in the drawings.So far the adjustment task of each pneumatic stopping valve (108,201a ~ 201h, 211a ~ 211d) in oxygen transport system is completed.Next open hand stop valve 301l, the exit pressure levels size of manual adjustments hand adjustment decompressor 304d, judges according to tensimeter 303e.Open hand stop valve 301n, pipeline is follow-up carries out annexation with pneumatic stopping valve (201d, 201h, 211d), and so far regulating the swept-off gases of pipeline of task is complete.
For oxygen transport system, first check that hand stop valve (204a ~ 204c, 213a ~ 213c) is in open mode.Tensimeter (202a ~ 202c, 212a ~ 212b) registration is normal, and force value is greater than zero, ensures that channel interior maintains the state being greater than external atmosphere pressure, prevents gas in process of the test from the phenomenon flow backwards occurring.So far complete to the inspection of oxygen transport system.Arrive complete to the preliminary work of whole pilot system here.
Start below to carry out experimental stage.
First pneumatic stopping valve 201b is opened, in the registration value of tensimeter 202a close to a half of the registration of tensimeter 104b, open pneumatic stopping valve 201a, air-flow arrives pneumatic stopping valve (201e by filtrator 203a, front end 211a), first ignition path d is regulated, open pneumatic stopping valve 211a, air-flow is successively by the depressurization of pneumatic pressure reducer 214, sonic nozzle 216 controls the effect of flow, arrive pneumatic stopping valve 211c front end, open pneumatic stopping valve 211c, air-flow is by the filtration of filtrator 220, enter in engine ignition 401, carry out reaction with fuel wherein to catch fire release heat.Following adjustment main road a, open pneumatic stopping valve 201e, air-flow is successively by the depressurization of pneumatic pressure reducer 205, sonic nozzle 207 controls the effect of flow, arrive pneumatic stopping valve 201g, front end, opens pneumatic stopping valve 201g, air-flow, by the filtration of filtrator 203b, enters in motor power room 401.So far engine starts to start test normally, because said process is the disposable course of work, in order to meet the reusable requirement of engine, need to carry out the several continuous print course of work to whole pilot system, this wherein can be lighted a fire to engine ignition 402 supplying media by continuous print switch pneumatic stopping valve 211c, switch pneumatic stopping valve 201g supply oxygenant to motor power room 401, carry out the normal test run of engine, thus reach the performance index of relight.
Need the moment to note the registration value of tensimeter (202a ~ 202c, 212a ~ 212b) in process of the test, guarantee that its registration is stablized and reaches rational test parameters requirement.Tensimeter (202a ~ 202c, 212a ~ 212b) panel board is installed in distribution platform 3 in manipulation of physical, can guarantee that distribution platform 3 operating personnel and test gas are isolated like this, conveniently read data, distribution platform 3 is general and test main road at a distance of a segment distance, which enhances the security performance of pilot system.Tensimeter (202b ~ 202c, 212a ~ 212b) front end installed a hand stop valve (204a ~ 204b respectively, 213a ~ 213b), main function conveniently dismantles tensimeter (202b ~ 202c, 212a ~ 212b), isolated pipe inner high voltage gas can be carried out to dismantling the danger brought by the hand stop valve of front end (204a ~ 204b, 213a ~ 213b).All have employed the structure of corrugated tube (209,218) in main road a and ignition path d, mainly corrugated tube can offset the stress of part channel interior, reduces the impact that pipeline brings motor power measurement.The Main Function of pressure transducer (208,217) is that real-time for pressure parameter is passed to remote computer, and operating personnel confirm whether data meet the demands.Strong oxidation susceptibility can be produced under the state considering oxygen pressure, therefore the pipeline tested and auxiliary device thereof be required to take strict oil removing measure.
After engine successfully carries out the test of being correlated with, finally enter the shutdown phase of pilot system.
First shut-down operation is carried out to oxygen transport system.Close pneumatic stopping valve 201a and pneumatic stopping valve 201b, cutoff high oxygen storage tank 109 is to the supply of each branch road.The exit pressure levels of adjustment hand adjustment decompressor 304a and hand adjustment decompressor 304b, object carries out bleed air operation to pneumatic pressure reducer 205 and pneumatic pressure reducer 214.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 402, play the result of oxygen being discharged 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 room 401, play the result of oxygen being discharged main road a.Then open pneumatic stopping valve 201f, pneumatic stopping valve 211b and pneumatic stopping valve 201d, the pipeline before starting pneumatic stopping valve 201g and pneumatic stopping valve 211c carries out blowing operation.After controlling certain blowing time, after tensimeter 202b registration is greater than zero, close pneumatic stopping valve 201e, same after tensimeter 212a registration is greater than zero, close pneumatic stopping valve 211a.Then open pneumatic stopping valve 201c, blowing operation is carried out to the pipeline between pneumatic stopping valve 201e and pneumatic stopping valve 201a.After controlling the relevant blowing time, tensimeter 202a registration is greater than zero, then close pneumatic stopping valve 201c, closes pneumatic stopping valve 201d immediately, keeps the channel interior moment to be in the state of normal pressure.So far, to the end of operation of oxygen transport system.
Then shut-down operation is carried out to distribution platform 3.Close hand stop valve 301a and hand stop valve 301l, block the source nitrogen supply 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, bleed air operation is carried out to channel interior gas.Open hand stop valve 301b, bleed air operation is carried out to the pipeline between hand stop valve 301a and hand stop valve 301c, 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 routine of whole pilot system is complete.
Claims (1)
1., for the oxygen supply system reusing engine test, comprise oxygen sources system, oxygen transport system and distribution platform (3);
Oxygen sources system comprises hand stop valve (101a ~ 101h), low-pressure liquid oxygen storage tank (102), safety valve (103a, 103b), tensimeter (104a, 104b), liquid oxygen pump (105), pressure transducer (106), carburetor (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, loading line bypass is provided with hand stop valve (101a), four-way is passed through on the top of low-pressure liquid oxygen storage tank (102), connection safety valve (103a) respectively, hand stop valve (101b), tensimeter (104a), the output of low-pressure liquid oxygen storage tank (102) manually stop valve (101c) connects liquid oxygen pump (105), low-pressure liquid oxygen storage tank (102) also connects a hand stop valve (101d), the other end of liquid oxygen pump (105) manually stop valve (101f) connects the input end of carburetor (107), 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 carburetor (107) connects hand stop valve (101h) by pneumatic stopping valve (108), connect high pressure oxygen storage tank (109) again, carburetor (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), tensimeter (104b) is provided with between safety valve (103b) and high pressure oxygen storage tank (109), the output of high pressure oxygen storage tank (109) connects pneumatic stopping valve (201a) and pneumatic stopping valve (201b) respectively,
Oxygen transport system comprises pneumatic stopping valve (201a ~ 201d), filtrator (203a), tensimeter (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 filtrator (203a), from high pressure oxygen storage tank (109) export pipeline, a T-valve is installed, draw a pipeline to be connected with pneumatic stopping valve (201b) input end, same from the export pipeline of pneumatic stopping valve (201a), T-valve is installed in appropriate location, is connected respectively with pneumatic stopping valve (201c) input end and pneumatic stopping valve (201d) input end; The output terminal of filtrator (203a) connects the pneumatic stopping valve (201e) in the pneumatic stopping valve (201e) in main road a, the pneumatic stopping valve (201e) in main road b, main road c, the pneumatic stopping valve (211a) in ignition path d respectively, and filtrator (203a) output terminal is Bonding pressure table (202a) also;
Main road a, main road b, main road c, ignition path d structure is identical, main road a comprises pneumatic stopping valve (201e), hand stop valve (204a), tensimeter (202b), pneumatic pressure reducer (205), safety valve (206), hand stop valve (204b), tensimeter (202c), sonic nozzle (207), pressure transducer (208), corrugated tube (209), hand stop valve (204c), pneumatic stopping valve (201f), pneumatic stopping valve (201g), pneumatic stopping valve (201h), retaining valve (210), filtrator (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), hand stop valve (204a) is provided with between pneumatic stopping valve (201e) and pneumatic pressure reducer (205), also Bonding pressure table (202b), safety valve (206) and hand stop valve (204b) is provided with between pneumatic pressure reducer (205) and sonic nozzle (207), Bonding pressure table (202c) gone back by hand stop valve (204b), the other end of sonic nozzle (207) connects corrugated tube (209), pressure transducer (208) and hand stop valve (204c) is provided with between sonic nozzle (207) and corrugated tube (209), hand stop valve (204c) also connects pneumatic stopping valve (201f), the other end of corrugated tube (209) connects one end of pneumatic stopping valve (201g), the other end of pneumatic stopping valve (201g) connects the input end of filtrator (203b), the output terminal connecting engine thrust chamber (401) of filtrator (203b), retaining valve (210) is provided with between pneumatic stopping valve (201g) and filtrator (203b), retaining 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 also connecting engine thrust chamber (401) of main road c middle filtrator (203b), the output terminal connecting engine lighter (402) of ignition path d middle filtrator (220);
Distribution platform (3) comprises hand stop valve (301a), filtrator (302), hand stop valve (301b), tensimeter (303a), main road a pneumatic pressure reducer controlling brancher, main road b pneumatic pressure reducer controlling brancher, main road c pneumatic pressure reducer controlling brancher, ignition path d pneumatic pressure reducer controlling brancher, pneumatic stopping valve Dominating paths, swept-off gases's Dominating paths;
Nitrogen pipeline manually stop valve (301a) connects the input end of filtrator (302), the output terminal of filtrator (302) connects the hand stop valve (301c) of main road a pneumatic pressure reducer controlling brancher respectively, the hand stop valve (301c) of main road b pneumatic pressure reducer controlling brancher, the hand stop valve (301c) of main road c pneumatic pressure reducer controlling brancher, the hand stop valve (301f) of ignition path d pneumatic pressure reducer controlling brancher, the hand stop valve (301i) of pneumatic stopping valve Dominating paths, hand stop valve (301b) and tensimeter (303a) is provided with after the output terminal of filtrator (302),
Main road a pneumatic pressure reducer controlling brancher, main road b pneumatic pressure reducer controlling brancher, main road c pneumatic pressure reducer controlling brancher, ignition path d pneumatic pressure reducer controlling brancher, pneumatic stopping valve Dominating paths structure are identical;
Main road a pneumatic pressure reducer controlling brancher comprises hand stop valve (301c), hand adjustment decompressor (304a), hand stop valve (301d), tensimeter (303b), hand stop valve (301e);
Hand stop valve (301c) connects one end of hand adjustment decompressor (304a), the other end of hand adjustment decompressor (304a) connects hand stop valve (301e), hand stop valve (301d) and tensimeter (303b) is provided with 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 controlling brancher 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 controlling brancher 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 controlling brancher 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 controlling brancher connects the pneumatic pressure reducer (214) of ignition path d,
The other end of the hand stop valve (301k) of pneumatic stopping valve Dominating paths connects the input end of small-sized air chamber (305), the output terminal of small-sized air chamber (305) connects each pneumatic stopping valve (108,201a ~ 201h, 211a ~ 211d);
Swept-off gases's Dominating paths comprises hand stop valve (301l), hand adjustment decompressor (304d), hand stop valve (301m), tensimeter (303e), hand stop valve (301n);
Hand stop valve (301l) one 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 inlet, blowing/nitrogen inlet and pneumatic stopping valve (201d, 201h, 211d) connect, between hand adjustment decompressor (304d) and hand stop valve (301n), be provided with hand stop valve (301m) and tensimeter (303e).
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| CN104613307B (en) * | 2014-11-17 | 2016-08-24 | 中国科学院力学研究所 | A kind of liquid oxygen feed system for associated mode supersonic combustion experimental bench |
| TWI550224B (en) * | 2015-01-14 | 2016-09-21 | zhong-wei Huang | Applicable to inflated high pressure cylinder structure improvement |
| CN104729857B (en) * | 2015-03-31 | 2017-05-24 | 北京航空航天大学 | Large cryogenic liquid rocket engine test bed supply system |
| CN105650459B (en) * | 2015-12-31 | 2017-11-24 | 西安航天动力试验技术研究所 | Liquid oxygen supply system is subcooled in a kind of bench for LOX/kerosene rocket ground run |
| CN106382467B (en) * | 2016-09-09 | 2018-07-03 | 西安航天动力试验技术研究所 | A kind of long range liquid oxygen supply system and its forecooling method |
| CN107587954A (en) * | 2017-09-05 | 2018-01-16 | 北京航空航天大学 | Gas oxygen kerosene Rocket Engines pressurizing transmission system and small rocket motor propellant-feed system |
| CN109630322B (en) * | 2019-01-17 | 2020-05-15 | 北京星际荣耀空间科技有限公司 | Rocket engine thrust chamber test method |
| CN112502856B (en) * | 2020-11-25 | 2021-11-19 | 北京航空航天大学 | Liquid oxygen and oxygen double-path adjustable supply system |
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| JP4285460B2 (en) * | 2005-08-24 | 2009-06-24 | トヨタ自動車株式会社 | Exhaust gas purification device for internal combustion engine |
| CN101539482B (en) * | 2009-04-21 | 2010-08-18 | 北京航空航天大学 | Electric propulsion testing platform gaseous-propellant supply device |
| CN101792462A (en) * | 2010-03-26 | 2010-08-04 | 陕西合成药业有限公司 | Method for preparing propofol phosphate and pharmaceutical salts thereof |
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