CN106500992A - A kind of drainage engine kerosene servo control mechanism ground experiment method - Google Patents
A kind of drainage engine kerosene servo control mechanism ground experiment method Download PDFInfo
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- CN106500992A CN106500992A CN201610839571.3A CN201610839571A CN106500992A CN 106500992 A CN106500992 A CN 106500992A CN 201610839571 A CN201610839571 A CN 201610839571A CN 106500992 A CN106500992 A CN 106500992A
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M3/00—Investigating fluid-tightness of structures
- G01M3/02—Investigating fluid-tightness of structures by using fluid or vacuum
- G01M3/04—Investigating fluid-tightness of structures by using fluid or vacuum by detecting the presence of fluid at the leakage point
- G01M3/20—Investigating fluid-tightness of structures by using fluid or vacuum by detecting the presence of fluid at the leakage point using special tracer materials, e.g. dye, fluorescent material, radioactive material
- G01M3/202—Investigating fluid-tightness of structures by using fluid or vacuum by detecting the presence of fluid at the leakage point using special tracer materials, e.g. dye, fluorescent material, radioactive material using mass spectrometer detection systems
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M3/00—Investigating fluid-tightness of structures
- G01M3/02—Investigating fluid-tightness of structures by using fluid or vacuum
- G01M3/04—Investigating fluid-tightness of structures by using fluid or vacuum by detecting the presence of fluid at the leakage point
- G01M3/20—Investigating fluid-tightness of structures by using fluid or vacuum by detecting the presence of fluid at the leakage point using special tracer materials, e.g. dye, fluorescent material, radioactive material
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M3/00—Investigating fluid-tightness of structures
- G01M3/02—Investigating fluid-tightness of structures by using fluid or vacuum
- G01M3/26—Investigating fluid-tightness of structures by using fluid or vacuum by measuring rate of loss or gain of fluid, e.g. by pressure-responsive devices, by flow detectors
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- Examining Or Testing Airtightness (AREA)
- Investigating Strength Of Materials By Application Of Mechanical Stress (AREA)
Abstract
The invention discloses a kind of drainage engine kerosene servo control mechanism ground experiment method, belongs to servo control mechanism technical field.First, kerosene is replaced using aircraft fluid, dynamic test is carried out to servo control mechanism hydraulic motor；Then, kerosene displacement is carried out to servo control mechanism hydraulic motor；Finally, malleation detection air-leakage test and detection of negative pressure air-leakage test are respectively adopted.Engine kerosene source being replaced using the ground hydraulic energy, Surface power drive test being carried out to hydraulic motor, principle is simple, and reliability is high, while process of the test is safer to operator；Malleation and negative pressure two ways airtight inspection to drainage link circuit is carried out respectively, and fully examination hydraulic motor provides guarantee to external seal positive/negative-pressure sealability for reliably working of the servo control mechanism in full rocket system.
Description
Technical field
The present invention relates to a kind of drainage engine kerosene servo control mechanism ground experiment method, belongs to servo control mechanism technology neck
Domain.
Background technology
Servo control mechanism is the executing agency of rocket thrust vector controlled, is the Typical Representative of integrated design, and which is integrated with
Fluid pressure line, Hydraulic Elements, power source, observing and controlling plug etc. are in one.Wherein power source includes hydraulic motor, axial plunger pump
Deng, when servo control mechanism works on rocket, fluoroplastics flexible pipe and engine drainage interface connect through draining fluids rocket motor
The high pressure kerosene of machine, drives hydraulic motor high-speed rotation, power to pass to axial plunger pump by rotor, give servo control mechanism pressurized strut
Hydraulic oil is provided, drainage kerosene is finished after work(through low-pressure hose return engine system.
Used as the one-level energy of servo control mechanism, it is servo that drainage engine high pressure kerosene makes hydraulic motor constant speed reliably working
The precondition of structure reliably working, the above-mentioned mode of operation of drainage engine liquid motivation need sufficiently to be tested on ground,
To ensure reliably working of the servo control mechanism on rocket.Therefore, the ground simulation of mode of operation of the servo control mechanism on rocket is
The important step of examination servo control mechanism, the most basic index request in drainage engine kerosene servo control mechanism drainage loop is exactly can not
Oil leak, can not gas leakage, need to carry out pressure test and air tightness test, it is ensured that whole drainage loop has good airtight
Property.Servo control mechanism at this stage with hydraulic motor as power is considerably less both at home and abroad, therefore lacks the reference of corresponding means of testing.Separately
Outward, the security of kerosene medium is relatively low, in addition, the factor such as kerosene medium is higher to the design of energy platform, manufacture requirements, once survey
Occur dangerous matter sources during examination and the security incidents such as blast easily occur.Accordingly, it is considered to the factor such as security, needs design a kind of both
Comprehensively but safety, ground experiment method.
Content of the invention
The present invention technology solve problem be：A kind of safe and reliable, comprehensive drainage engine kerosene servo control mechanism is provided
Ground experiment method.
The present invention solve the scheme that adopts of its technical problem for：A kind of drainage engine kerosene servo control mechanism ground experiment side
Method, the method comprise the steps：
(1) kerosene is replaced using aircraft fluid, dynamic test is carried out to servo control mechanism hydraulic motor, i.e.,：By hydraulic air
Oil accesses servo control mechanism hydraulic motor, and hydraulic air oil pressure is identical with the high pressure coal oil pressure provided in rocket system, adjusts boat
The flow velocity of empty hydraulic oil makes it stable, and tests default a period of time, and whether the rotating speed r for counting servo control mechanism hydraulic motor meets：
The condition of (reference rotation speed predetermined deviation)≤r≤(reference rotation speed+predetermined deviation), if it is satisfied, then servo control mechanism surge motor-driven
Power test passes, otherwise, servo control mechanism hydraulic motor dynamic test is unqualified；
(2) kerosene displacement is carried out to servo control mechanism hydraulic motor, i.e.,：Hydraulic oil in cleaning servo control mechanism hydraulic motor, until
The purity of the kerosene that servo control mechanism hydraulic motor flows out is more than 95%；
(3), malleation detection air-leakage test, i.e.,：Nitrogen is filled with toward the airtight test loop of servo control mechanism, is forced into default
Pressure value, and keep a period of time, afterwards, test helium leak rate, if less than set required value, the airtight inspection of malleation
It is qualified to look into, and otherwise, the airtight inspection of malleation is unqualified；
(4), detection of negative pressure air-leakage test, i.e.,：Airtight test loop in servo control mechanism hydraulic motor is vacuumized, is checked
Whether the airtight test loop vacuum in servo control mechanism hydraulic motor can reach default threshold value, can reach, then detection of negative pressure
Air-leakage test is qualified, and otherwise, detection of negative pressure air-leakage test is unqualified.
Step (1) concretely comprises the following steps：
(1.1) ground hydraulic station, flow speed control valve, are sequentially connected to servo control mechanism hydraulic motor oil-in, then are sequentially connected servo
Mechanism's hydraulic motor oil-out, oil are filtered to ground hydraulic station, the ground hydraulic station internal reservoir aircraft fluid；
(1.2) provide in the hydraulic fluid pressure and hydraulic air oil pressure and rocket system that, adjust ground hydraulic station output
High pressure coal oil pressure identical, by speed governing valve regulation hydraulic oil flow velocity, make servo control mechanism hydraulic motor (5) invariablenes turning speed in [base
Quasi- rotating speed predetermined deviation, reference rotation speed+predetermined deviation] within；
(1.3), continuance test default a period of time, and record the rotating speed of servo control mechanism hydraulic motor；
(1.4), the stabilization of speed situation of servo control mechanism hydraulic motor is analyzed, when all tachometer values all meet (reference rotation speed
Predetermined deviation)≤r≤(reference rotation speed+predetermined deviation) condition when, it is believed that servo control mechanism hydraulic motor (5) pressure test is qualified, no
Then, it is believed that servo control mechanism hydraulic motor pressure test is unqualified.
On the basis of step (1.2) described predetermined deviation within the 5% of rotating speed.
Default a period of time described in step (1.3) is more than 5min.
Step (2) concretely comprise the following steps：
(2.1) displacement pumping plant, kerosene bucket, oil, are sequentially connected to filter to servo control mechanism hydraulic motor oil-in, connect servo control mechanism
Hydraulic motor oil-out is to wasted oil bucket；
(2.2), control displacement pumping plant, is allowed to draw kerosene from kerosene bucket, and kerosene is sent to servo control mechanism liquid through oil filter
Motivation, being applied with to kerosene to make the pressure of servo control mechanism hydraulic motor rotary motion, drive the rotation of servo control mechanism hydraulic motor, stream
The kerosene for crossing servo control mechanism hydraulic motor is expelled to wasted oil bucket from the oil-out of servo control mechanism hydraulic motor；
(2.3), the purity of the kerosene that the oil-out of detection servo control mechanism hydraulic motor flows out, until the purity of kerosene is more than
95%.
Step (3) concretely comprise the following steps：
(3.1), it is sequentially connected nitrogen cylinder, stop valve, first pressure table, pressure-reducing valve, second pressure table, servo control mechanism to surge
Machine oil-in, servo control mechanism hydraulic motor oil-out connect seal plug；
(3.2) the switch stop valve that control nitrogen pressurizes to hydraulic motor, is opened, pressure-reducing valve is adjusted, pressure gauge is observed, by gas
Density test loop is pressurized to 0.5MPa and is kept for a period of time；
(3.3), using the probe of helium mass spectrometer leak detector, at interface tool, at seal plug and thermomechanical components of surging
At part composition surface, helium leak rate is checked, the distance of the probe distance detection site of helium mass spectrometer leak detector is less than
3mm, and detect that gait of march is slowly uniform, if helium leak rate is less than the required value for setting, the airtight passed examination of malleation,
Otherwise, the airtight inspection of malleation is unqualified.
A period of time in step (3.2) is set as more than 2min.
In step (3.3), required value is 5 × 10-12Pa.m3/ below s.
Step (4) are implemented as：
(4.1), to servo control mechanism hydraulic motor oil-in, servo control mechanism hydraulic motor oil-out installs seal plug to connection filling platform
Head；
(4.2), the airtight test loop in servo control mechanism hydraulic motor is vacuumized by filling platform, if vacuum can be extracted into
Default threshold value, then the airtight passed examination of negative pressure, otherwise, negative pressure is airtight check unqualified.
Predetermined threshold value described in step (4.2) is below 2000Pa.
Compared with the prior art, the invention has the advantages that：
(1), the present invention replaces engine kerosene source using the ground hydraulic energy so that servo control mechanism is surged on ground
When mechanomotive force is tested, more safe and reliable, when carrying out the airtight detection in drainage loop, Test coverage face is more comprehensive, principle letter
Single, reliability is high, while the process of the test is safer to operator；
(2), hydraulic power unit of the present invention adopts hydraulic oil as medium, than adopting kerosene as the hydraulic pump of medium in system
More simple in structure, cost is less expensive；
(3), the present invention is respectively adopted 0.5MPa positive pressure of nitrogen and filling platform vacuumizes negative pressure two ways and realizes to drainage
The airtight inspection of link circuit, fully examination hydraulic motor is to external seal positive/negative-pressure sealability so that the scope of detection is covered more
Comprehensively, testing result is more reliable, provides guarantee for reliably working of the servo control mechanism in full rocket system.
Description of the drawings
Fig. 1 is drainage engine kerosene servo control mechanism ground experiment method flow diagram of the present invention；
Fig. 2 is drainage engine kerosene servo control mechanism hydraulic motor dynamic test schematic diagram of the present invention；
Fig. 3 is drainage engine kerosene servo control mechanism hydraulic motor kerosene principle,displacement figure of the present invention；
Fig. 4 is drainage engine kerosene servo control mechanism positive pressure gas density test schematic diagram of the present invention；
Fig. 5 is the airtight test philosophy figure of drainage engine kerosene servo control mechanism negative pressure of the present invention.
Specific embodiment
The present invention is described in detail with specific embodiment below in conjunction with the accompanying drawings.
Hydraulic motor is the one-level energy for providing power for servo control mechanism, is a part for servo control mechanism Power Component, servo
When mechanism works on rocket, the oil-in of the high pressure kerosene to hydraulic motor of drainage rocket engine, high pressure kerosene drive and surge
Machine constant speed rotary, and then driving axial plunger displacement pump provides high pressure liquid force feed for servo control mechanism, completes the position servo of servo control mechanism
Control.
As shown in figure 1, drainage engine kerosene servo control mechanism ground experiment method include pressure test, kerosene displacement, just
Calm the anger density test and negative pressure airtight test four steps.
1. pressure test
The purpose of drainage engine kerosene servo control mechanism hydraulic motor pressure test is fully to examine hydraulic motor to outside seal
Air-tightness, be that full rocket vacuumizes in filling process offer guarantee.
What drainage engine kerosene servo control mechanism hydraulic press pressure was tested concretely comprises the following steps：
(1.1), according to each equipment of connection pressure test shown in Fig. 2：Ground hydraulic station 1 connects flow speed control valve 3 by flexible pipe 2,
Flow speed control valve 3 is connected to 5 oil-in of servo control mechanism hydraulic motor, and 5 oil-out of servo control mechanism hydraulic motor connection oil filters 4, and oil filter 4 passes through again
An other flexible pipe is connected to ground hydraulic station 1, the ground hydraulic station internal reservoir aircraft fluid, preferably No. 10 aviations
Hydraulic oil；
(1.2) provide in the hydraulic fluid pressure and hydraulic air oil pressure and rocket system that, adjust the output of ground hydraulic station 1
High pressure coal oil pressure identical, by flow speed control valve 3 adjust hydraulic pressure oil flow rate, make servo control mechanism hydraulic motor (5) invariablenes turning speed in [base
Quasi- rotating speed predetermined deviation, reference rotation speed+predetermined deviation] within；The predetermined deviation is at least within the 5% of reference rotation speed.One
As reference rotation speed be 6000r/min, high pressure liquid force feed pressure be 24MPa.
The Power Component of servo control mechanism includes hydraulic motor and axle upper plug pump, servo control mechanism in the course of work on rocket,
The high pressure kerosene exported by drainage rocket engine, drives hydraulic motor to rotate, and hydraulic motor connects axial plunger by armature spindle
Pump, and drive which to rotate, and then power fluid force feed is provided for servo control mechanism 7.
(1.3), continuance test default a period of time, such as 5min, and record the rotating speed of servo control mechanism hydraulic motor 5；
(1.4), the velocity-stabilization situation of the rotating speed of analysis servo control mechanism hydraulic motor 5, when all tachometer values all meet (base
Quasi- rotating speed predetermined deviation)≤r≤(reference rotation speed+predetermined deviation) condition when, it is believed that 5 pressure test of servo control mechanism hydraulic motor close
Lattice, otherwise it is assumed that 5 pressure test of servo control mechanism hydraulic motor is unqualified.
The burning-point of kerosene is low, belongs to inflammable and explosive medium, and ground test danger is larger, meanwhile, the viscosity of kerosene medium is low,
Therefore, the Seal Design of kerosene pumping plant, kerosene pump design all complex and relatively costly.Factors above is considered, on ground
When being simulated in the face of this mode of operation of servo control mechanism, propose using viscosity compared with kerosene height, and the high hydraulic air of burning-point
Oil is used as working media.
2. kerosene displacement
After the dynamic test of hydraulic motor is completed, before servo control mechanism is installed on rocket, then with by kerosene pumping plant to liquid
Motivation carries out kerosene displacement so that the hydraulic working oil medium in hydraulic motor is cleaned completely, it is to avoid drainage rocket motor machine-made egg-shaped or honey-comb coal briquets
After oil work, kerosene is returned and which is impacted when starting.What kerosene was replaced concretely comprises the following steps：
(2.1) as shown in figure 3, being sequentially connected displacement pumping plant 9, kerosene bucket 8,5 oil-feed of oil filter 4 to servo control mechanism hydraulic motor
Mouthful, 5 oil-out of connection servo control mechanism hydraulic motor is to wasted oil bucket 10；
(2.2), control displacement pumping plant 9, is allowed to draw kerosene from kerosene bucket 8, and kerosene is sent to servo through oil filter 11
Structure hydraulic motor 5, being applied with to kerosene to make the pressure of 5 rotary motion of servo control mechanism hydraulic motor, be typically chosen for 4～5MPa i.e.
Can, drive servo control mechanism hydraulic motor 5 to rotate, servo control mechanism 7 in free state, flow through the kerosene of servo control mechanism hydraulic motor 5 from
The oil-out of servo control mechanism hydraulic motor 5 is expelled to wasted oil bucket 10；
(2.3), the purity of the kerosene that the oil-out of detection servo control mechanism hydraulic motor 5 flows out, until the purity of kerosene is more than
95%.
For further ensuring that high leakproofness of the hydraulic motor in rocket engine fuel oil closed-loop system, hydraulic motor is completed
After dynamic test and kerosene displacement, airtight test will be carried out to hydraulic motor, be so that the covering of airtight test is comprehensive, will point
Other malleation test and negative pressure test are carried out to which, it is ensured that whole drainage loop has good air-tightness, should there is no leakage etc.
Failure.
3. positive pressure gas density test
The purpose of positive pressure gas density test is：Examination hydraulic motor bears the ability of malleation, its concrete steps to outer seal configuration
For：
(3.1) as shown in figure 4, being sequentially connected nitrogen cylinder 12, stop valve 13, first pressure table 14, pressure-reducing valve 15, second
Pressure gauge 16,5 oil-in of servo control mechanism hydraulic motor, 5 oil-out of servo control mechanism hydraulic motor connect seal plug 18；
(3.2) the switch stop valve 13 that control nitrogen pressurizes to hydraulic motor, is opened, pressure-reducing valve 15 is adjusted, pressure gauge is observed
16, airtight test loop is pressurized to 0.5MPa and is kept for a period of time；
(3.3), using the probe of helium mass spectrometer leak detector 19, at interface tool 17, at seal plug 18 and hydraulic motor
At the part composition surface of 5 components, helium leak rate is checked, the probe distance detection site of helium mass spectrometer leak detector 19
Distance is less than 3mm, and detects that gait of march is slowly uniform, if leak rate typically chooses 5 × 10- less than the required value for setting
Below 12Pa.m3/s, then the airtight passed examination of malleation, otherwise, malleation is airtight check unqualified.
4. the airtight test of negative pressure
The purpose of the airtight test of negative pressure is：Examination hydraulic motor bears the ability of negative pressure, its concrete steps to outer seal configuration
For：
(4.1) as shown in figure 5, connection filling platform 20 is to 5 oil-in of servo control mechanism hydraulic motor, servo control mechanism hydraulic motor 5 goes out
Hydraulic fluid port installs seal plug 18；
(4.2), the airtight test loop in servo control mechanism hydraulic motor 5 is vacuumized by filling platform 20, if vacuum energy
Default threshold value is extracted into, according to design requirement, the typically threshold value takes 2000Pa and its values below, then airtight inspection of negative pressure is closed
Lattice, otherwise, the airtight inspection of negative pressure is unqualified.
Malleation and the airtight inspection of negative pressure is carried out, i.e., examine hydraulic motor to outside seal by barotropic gas is filled inside hydraulic motor
The ability of malleation is born, and the ability that examination hydraulic motor bears malleation to outside seal is vacuumized inside hydraulic motor, is fully examined
Sealing property of the hydraulic motor to outside seal, is that full rocket vacuumizes offer guarantee in filling process.
From the foregoing, it will be observed that drainage engine kerosene servo control mechanism ground experiment only needs altogether：One Hydraulic Station, three soft
Pipe, flow speed control valve, two oil filters, kerosene bucket, displacement pumping plant, wasted oil bucket, one bottle of nitrogen, cut-offs
Valve, two pressure gauges, pressure-reducing valve, interface tool, seal plug, helium mass spectrometer leak detector, filling
Platform.These equipment are conventional equipment, can be bought by hydraulic component manufacturer and can be reused.And test system
Simple structure, cheap.
Therefore, drainage engine kerosene servo control mechanism test method proposed by the present invention, safe and reliable, test is abundant, section
The reliably working that about cost is servo control mechanism on rocket provides guarantee.
The undocumented part of the present invention is known in the art general knowledge.
Claims (10)
1. a kind of drainage engine kerosene servo control mechanism ground experiment method, it is characterised in that comprise the steps：
(1) kerosene is replaced using aircraft fluid, dynamic test is carried out to servo control mechanism hydraulic motor, i.e.,：Aircraft fluid is connect
Enter servo control mechanism hydraulic motor, hydraulic air oil pressure is identical with the high pressure coal oil pressure provided in rocket system, adjusts aviation liquid
The flow velocity of force feed makes it stable, and tests default a period of time, and whether the rotating speed r for counting servo control mechanism hydraulic motor meets：(benchmark
Rotating speed predetermined deviation)≤r≤(reference rotation speed+predetermined deviation) condition, if it is satisfied, then servo control mechanism surges mechanomotive force survey
Examination is qualified, and otherwise, servo control mechanism hydraulic motor dynamic test is unqualified；
(2) kerosene displacement is carried out to servo control mechanism hydraulic motor, i.e.,：Hydraulic oil in cleaning servo control mechanism hydraulic motor, until servo
The purity of the kerosene that mechanism's hydraulic motor flows out is more than 95%；
(3), malleation detection air-leakage test, i.e.,：Nitrogen is filled with toward the airtight test loop of servo control mechanism, default pressure is forced into
Force value, and kept for a period of time, afterwards, helium leak rate is tested, if less than the required value for setting, the airtight inspection of malleation is closed
Lattice, otherwise, the airtight inspection of malleation is unqualified；
(4), detection of negative pressure air-leakage test, i.e.,：Airtight test loop in servo control mechanism hydraulic motor is vacuumized, servo is checked
Whether the airtight test loop vacuum in mechanism's hydraulic motor can reach default threshold value, can reach, then detection of negative pressure is airtight
Property detection qualified, otherwise, detection of negative pressure air-leakage test is unqualified.
2. a kind of drainage engine kerosene servo control mechanism ground experiment method according to claim 1, it is characterised in that institute
State concretely comprising the following steps for step (1)：
(1.1), it is sequentially connected ground hydraulic station (1), flow speed control valve (3) is to servo control mechanism hydraulic motor (5) oil-in, then is sequentially connected
Servo control mechanism hydraulic motor (5) oil-out, oil filter (4) to ground hydraulic station (1), the ground hydraulic station internal reservoir hydraulic air
Oil；
(1.2), ground hydraulic station (1) hydraulic fluid pressure that exports is adjusted with offer in hydraulic air oil pressure and rocket system
High pressure coal oil pressure is identical, adjusts hydraulic pressure oil flow rate by flow speed control valve (3), makes servo control mechanism hydraulic motor (5) invariablenes turning speed in [base
Quasi- rotating speed predetermined deviation, reference rotation speed+predetermined deviation] within；
(1.3), continuance test default a period of time, and record the rotating speed of servo control mechanism hydraulic motor (5)；
(1.4), the stabilization of speed situation of analysis servo control mechanism hydraulic motor (5), when all tachometer values all meet (reference rotation speed
Predetermined deviation)≤r≤(reference rotation speed+predetermined deviation) condition when, it is believed that servo control mechanism hydraulic motor (5) pressure test is qualified, no
Then, it is believed that servo control mechanism hydraulic motor (5) pressure test is unqualified.
3. a kind of drainage engine kerosene servo control mechanism ground experiment method according to claim 2, it is characterised in that institute
State within 5% of rotating speed on the basis of step (1.2) predetermined deviation.
4. a kind of drainage engine kerosene servo control mechanism ground experiment method according to claim 2, it is characterised in that institute
It is more than 5min to state default a period of time described in step (1.3).
5. a kind of drainage engine kerosene servo control mechanism ground experiment method according to claim 1, it is characterised in that institute
State concretely comprising the following steps for step (2)：
(2.1), displacement pumping plant (9), kerosene bucket (8), oil filter (4) to servo control mechanism hydraulic motor (5) oil-in, connection are sequentially connected
Servo control mechanism hydraulic motor (5) oil-out is to wasted oil bucket (10)；
(2.2), control displacement pumping plant (9), is allowed to draw kerosene from kerosene bucket (8), and kerosene is sent to servo through oil filter (11)
Mechanism's hydraulic motor (5), being applied with to kerosene to make the pressure of servo control mechanism hydraulic motor (5) rotary motion, drive servo control mechanism
Hydraulic motor (5) rotate, flow through servo control mechanism hydraulic motor (5) kerosene be expelled to from the oil-out of servo control mechanism hydraulic motor (5) useless
Oil drum (10)；
(2.3), the purity of the kerosene that the oil-out of detection servo control mechanism hydraulic motor (5) flows out, until the purity of kerosene is more than
95%.
6. a kind of drainage engine kerosene servo control mechanism ground experiment method according to claim 1, it is characterised in that institute
State concretely comprising the following steps for step (3)：
(3.1), nitrogen cylinder (12), stop valve (13), first pressure table (14), pressure-reducing valve (15), second pressure table are sequentially connected
(16), servo control mechanism hydraulic motor (5) oil-in, servo control mechanism hydraulic motor (5) oil-out connection seal plug (18)；
(3.2) the switch stop valve (13) that control nitrogen pressurizes to hydraulic motor, is opened, pressure-reducing valve (15) is adjusted, pressure gauge is observed
(16) airtight test loop is pressurized to 0.5MPa, and is kept for a period of time；
(3.3), using the probe of helium mass spectrometer leak detector (19), at interface tool (17) place, seal plug (18) place and surge
At the part composition surface of machine (5) component, helium leak rate is checked, the probe distance of helium mass spectrometer leak detector (19) is detected
The distance at position is less than 3mm, and detects that gait of march is slowly uniform, if helium leak rate is less than the required value for setting, just
Calm the anger close passed examination, otherwise, malleation is airtight check unqualified.
7. a kind of drainage engine kerosene servo control mechanism ground experiment method according to claim 6, it is characterised in that institute
The a period of time that states in step (3.2) is set as more than 2min.
8. a kind of drainage engine kerosene servo control mechanism ground experiment method according to claim 6, it is characterised in that institute
It is 5 × 10 to state required value in step (3.3)-12Pa.m3/ below s.
9. a kind of drainage engine kerosene servo control mechanism ground experiment method according to claim 1, it is characterised in that institute
State being implemented as step (4)：
(4.1), to servo control mechanism hydraulic motor (5) oil-in, servo control mechanism hydraulic motor (5) oil-out is installed for connection filling platform (20)
Seal plug (18)；
(4.2), the airtight test loop in servo control mechanism hydraulic motor (5) is vacuumized by filling platform (20), if vacuum energy
Default threshold value is extracted into, then the airtight passed examination of negative pressure, otherwise, the airtight inspection of negative pressure is unqualified.
10. a kind of drainage engine kerosene servo control mechanism ground experiment method according to claim 9, it is characterised in that institute
It is below 2000Pa to state the predetermined threshold value described in step (4.2).
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| CN110617923A (en) * | 2019-10-11 | 2019-12-27 | 华东光电集成器件研究所 | Helium mass spectrum leak detection pressurization laminating device |
| CN111734555A (en) * | 2020-05-18 | 2020-10-02 | 北京航空航天大学 | Intelligent adjusting conveying system and method for rocket engine |
| CN112539678A (en) * | 2020-11-30 | 2021-03-23 | 北京宇航系统工程研究所 | Automatic launching control method for low-temperature power system of carrier rocket |
| CN113738537A (en) * | 2021-08-06 | 2021-12-03 | 北京精密机电控制设备研究所 | Servo mechanism hydraulic motor energy matching method adapting to variable thrust working condition of engine |
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| CN111734555B (en) * | 2020-05-18 | 2021-04-30 | 北京航空航天大学 | Intelligent adjusting conveying system and method for rocket engine |
| CN112539678A (en) * | 2020-11-30 | 2021-03-23 | 北京宇航系统工程研究所 | Automatic launching control method for low-temperature power system of carrier rocket |
| CN112539678B (en) * | 2020-11-30 | 2022-12-09 | 北京宇航系统工程研究所 | Automatic launching control method for low-temperature power system of carrier rocket |
| CN113738537A (en) * | 2021-08-06 | 2021-12-03 | 北京精密机电控制设备研究所 | Servo mechanism hydraulic motor energy matching method adapting to variable thrust working condition of engine |
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