CN100523472C - Axial symmetric vector spray-pipe A9 action emergency resetting hydraulic system - Google Patents
Axial symmetric vector spray-pipe A9 action emergency resetting hydraulic system Download PDFInfo
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- CN100523472C CN100523472C CNB2006100241573A CN200610024157A CN100523472C CN 100523472 C CN100523472 C CN 100523472C CN B2006100241573 A CNB2006100241573 A CN B2006100241573A CN 200610024157 A CN200610024157 A CN 200610024157A CN 100523472 C CN100523472 C CN 100523472C
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Abstract
The invention is an A9 actuating emergency rest hydraulic system able to be used for axially symmetric vector spray pipe of an airplane fuel turbine engine, comprising: emergency reset circuit and oil pipeline of electrohydraulic servo master system. On normal condition, the oil pipeline of the master system is controlled by flight control computer to supply oil to A9 actuating cylinder to execute various flight commands; at electrohydraulic failure, an emergency valve electrohydraulic linked with electrohydraulic servo valve and coordinating valve identifies and calls failure mode to control energy storing device to supply emergency pressure oil to an emergency reset oil pipeline and simultaneously the coordinating valve cuts off the oil pipe of the oil pipeline of the master system, the mechanical feedback mechanism composed of rack link component and reducer in the emergency control system collects and converts actuating cylinder displacement signal and transfers to a servo slide valve, and the servo slide valve supplies oil to the corresponding oil cavity of the actuating cylinder to push it to a neutral position so that the hydraulic lock is closed to fix the actuating cylinder in the neutral position. When the master returns to normal operation, by the action of the emergency and the coordinating valve, the main oil pipeline and emergency reset oil pipeline automatically make operation switching.
Description
Technical field
The present invention relates to gas turbine engine, particularly relate to the axisymmetric vectoring exhaust nozzle of the gas turbine engine that drives aircraft.
Background technique
Axisymmetric vectoring exhaust nozzle has main exhaust adjustment sheet (convergence adjustment sheet) and secondary exhaust adjustment sheet (diffusion adjustment sheet), and above-mentioned adjustment sheet disposes in order to limit adjustable area convergence/diffusion ejector exhaust pipe, is used for retraining blast air.Wherein spreading adjustment sheet has a front end and a rear end that limits the big circulation area (often being referred to as A9) of effuser that limits venturi minimum flow area (often being referred to as A8), and they have constituted an effuser tract that forms from the venturi extension.What the axisymmetric vectoring ejector exhaust pipe adopted is orientable diffusion adjustment sheet, under the vector ring effect by several A9 pressurized struts controls, can realize pitching and driftage vector with this with respect to the vertical center line symmetry of ejector exhaust pipe or location asymmetricly.Axisymmetric vectoring exhaust nozzle is general to adopt three circumferential equal angles to place the vector pressurized strut on the casing outer wall to come translation and oblique dynamic vector ring, when three pressurized struts front and back translation synchronously, A9 area size is changed, and the A9 pressurized strut is when non-synchronously mobile, it is tiltedly moving that vector ring is produced, and the angle of inclination of vector ring and true dip direction have been determined the azimuth and the direction vector of jet pipe respectively.In general, this class jet pipe often adopts hydraulic way that pressurized strut is controlled.
At motor and aircraft duration of work, might cause the hydraulic actuation system of jet pipe losing efficacy aspect some or a plurality of different mode of operations because of part fails or damage (for example because the air battle fistfight), failure of oil feed or control signal as actuating system are interrupted, this will cause aircraft uncontrolled, therefore the jet pipe actuating system all is provided with the hydraulic fault protective equipment, when system breaks down, with the A9 pressurized strut place between whole process stretch out and omnidistance withdrawal between the neutral position, make the diffusion adjustment sheet under the vector ring effect, be in protective postures level, at this moment jet pipe is in non-vector state, thereby makes aircraft controlled.Common hydraulic fault protective equipment has two classes: (1) utilizes the homing position type with the coaxial setting of main pressurized strut reset pressurized strut and associated component, after calling fault mode, through the pressurized strut effect that resets, in the neutral position, jet pipe places protective postures level with main pressurized strut mechanical positioning.The Protective system that U.S. Patent No. US6142416 disclosed as announcement in 2000.In this patent, also disclose another and had the emergency protection pressurized strut that can locate stop pin, under standby mode of operation, can drive stop pin by this pressurized strut and move along sliding bar, stop that making rotating ring all regains and rest on the neutral position; (2) adopting two cover jet pipe actuating systems is that redundant system realizes protection.As the Protective system that U.S. Patent No. US5740988 disclosed of announcement in 1998, when a cover system broke down therein, by the control of other cover start system realization to jet pipe, two cover systems disposed independently oil circuit and oil sources.
Yet, in above-mentioned first type emergency protection system, when calling fault mode, protective equipment is under flight-control computer and vector electronic controller controls, and to the emergent fuel feeding of emergency protection pressurized strut, emergency protection pressurized strut piston rod stretches out by system's oil sources, be blocked in the main pressurized strut of retraction under the aerodynamic loading effect, make the main pressurized strut of retraction rest on the neutral position, jet pipe is placed protective postures level, the neutral position is determined by the stroke of emergency protection pressurized strut piston.But when system's failure of oil feed and forfeiture control signal (outage), will influence the proper functioning of this device, can not protect jet pipe and flight safety effectively; Simultaneously, owing to adopted the emergency protection pressurized strut, make the physical dimension of system increase, weight increases, thereby has limited the raising of aeroplane performance.For the second class Protective system, though improved the reliability of engine operation, the use of redundant system makes motor and overall aircraft weight increase, and structure is more complicated also.
Summary of the invention
The object of the present invention is to provide a kind of axisymmetric vectoring exhaust nozzle A9 start emergency resetting hydraulic system, overcome existing defective in the above-mentioned axisymmetric vectoring exhaust nozzle emergency protection hydraulic system, promptly under main system forfeiture fuel feeding and related compound fault mode thereof, can not effectively protect and complex structure.
The technical solution adopted for the present invention to solve the technical problems is: on the main system oil circuit basis by electrohydraulic control control, install a cover EMR emergency reset hydraulic circuit additional, two cover oil circuits are connected in parallel between high pressure fuel source, return tube and the A9 pressurized strut, form A9 start emergency resetting hydraulic system.The EMR emergency reset oil circuit is made up of control valves such as servo guiding valve, one-way valve, accumulator, emergent valve, throttle valve, pressure regulator valve, hydraulic lock.For coordinating the work of two cover oil circuits, between the electrohydraulic control of working connection and pressurized strut, the coordination valve is set, electrohydraulic control and emergent valve electromagnet are taked electric interlock, and emergent valve is taked hydraulic interlocking with coordinating valve, i.e. the other side's the pilot pressure oil each other of pressure oil in the two oil circuit.Normal work period, electrohydraulic control are under flight-control computer control, and coordinated valve is realized the pitching and the driftage of aircraft to the pressurized strut fuel feeding; When electricity, liquid fault occurring, discern and call fault mode through emergent valve, accumulator is emitted at the emergent fluid that normal work period stores, and the coordination valve in the working connection is closed under the emergency oil action of hydraulic force, cuts off the advancing of electrohydraulic control and pressurized strut, oil circuit.The EMR emergency reset oil circuit under the control of emergent control system, to A9 pressurized strut fuel feeding, main pressurized strut is pushed into the neutral position after, by hydraulic lock pressurized strut is locked.The emergent control system of being made up of transmission device, servo guiding valve adopts the machine feedback mode, be the mechanical feedback mechanism collection formed of connecting rod rack assembly and retarder, conversion and the pressurized strut position signal passed to servo guiding valve, control the action of servo guiding valve and determine direction and flow thus to the pressurized strut fuel feeding.When main system was recovered proper functioning, emergent valve was closed, is coordinated valve and opens, and working connection and EMR emergency reset oil circuit carry out work and switch.
A kind of axisymmetric vectoring exhaust nozzle A9 start emergency resetting hydraulic system, comprise the EMR emergency reset oil hydraulic circuit of emergent control system control and the electro-hydraulic servo main system oil circuit parallel connection of flight-control computer control, the former locks after under fault mode the A9 pressurized strut being returned to the neutral position, the latter controls the pressurized strut start under normal mode of operation, realize flight directive.Form the EMR emergency reset oil hydraulic circuit by servo guiding valve, one-way valve, accumulator, emergent valve, hydraulic lock, series flow control valve and pressurized strut, emergent valve and electrohydraulic control, coordination valve are taked electricity, liquid interlocking, discern and call fault mode.By emergent control system effect, the feed flow direction and the flow of the servo guiding valve control pressurized strut that is associated with the pressurized strut displacement, pressurized strut is locked by hydraulic lock after arriving the neutral position, and emergent oil sources is provided by accumulator; Form electro-hydraulic servo main system oil circuit by electrohydraulic control, A9 pressurized strut and two coordination valve, electrohydraulic control control A9 pressurized strut under flight-control computer control, coordinate valve for two that are serially connected between electrohydraulic control and the pressurized strut, under fault mode, close, cut off the main system oil circuit.
Further, described emergent control system, it is a control system that adopts mechanical feedback mechanism collection and conversion pressurized strut displacement signal, fault mode is controlled direction and the flow of servo guiding valve to the pressurized strut feed flow down, form by tooth bar link assembly, retarder, servo guiding valve and pressurized strut, rod hinge connection is on the caudal peduncle of pressurized strut, and with the tooth bar and the reducer gear engagement of rod hinge connection, the nut in the retarder turbine shaft cooperates with the screw mandrel of servo valve core of the spool valve end.
Described servo guiding valve, by the pressurized strut displacement signal that retarder transmits, control is to the direction and the flow of pressurized strut feed flow.Meta function is Y type, nesting type structure, be installed on the motor-driven guiding valve of 3-position 4-way in the integrated valve body, the axial position of advancing on the valve pocket, return opening and two control ports is associated with the stroke and the neutral position of A9 pressurized strut, and depend on the velocity ratio of retarder simultaneously, advance, return opening is provided with symmetrically in pairs and parallel in the axial direction, two control ports that are arranged in parallel equally in the axial direction with advance, return opening becomes 90 ° of angles in the circumference, advance, one side adopts V-type to return opening in the neutral position, filler opening is negative opening; Spool is three shoulder types, and the other end is a screw mandrel, cooperates with nut in the retarder turbine shaft in the outside, relies on retarder to drag, and the spool inside groove cooperates with guide pin bushing, and guide pin bushing is fixed in the valve opening of integrated valve body by two flat keys.
Described emergent valve, be used for identification and call fault modes such as electrical failure, hydraulic fault and electric hydraulic fault, it is the unidirectional cone valve of Normally closed type of electricity, hydraulic control system, nesting type structure, be installed in the integrated valve body, its electromagnet and electrohydraulic control are taked electric interlock, high-pressure oil pipe is connected in control port, and oil outlet is communicated with two control ports of coordinating valve, makes emergent valve and coordinates the valve hydraulic interlocking.
Described coordination valve, close under the fault mode, cut off advancing between electrohydraulic control and the pressurized strut, oil circuit, it is fluid-control one-way cone valve open in usual, two oil pockets of it advances, return opening connects electrohydraulic control respectively two control ports and pressurized strut, control port is communicated with the oil outlet of emergent valve.
Described retarder after the pressurized strut displacement signal conversion that the tooth bar link assembly is gathered and transmitted, passes to servo guiding valve.Be gear---the Worm type structure, gear is installed on the worm shaft, tooth bar engagement with the connecting rod rack assembly that passes reduction case bottom guide groove, the worm and wheel axle cooperates, nut in the turbine shaft and the engagement of the screw mandrel of servo valve core of the spool valve end, the retarder side is loaded on the integrated valve body, is positioned at the outside of servo guiding valve.
The invention provides a kind of emergency resetting hydraulic system, this hydraulic system is under the emergent closed loop control system control of a cover machine feedback, can produce in response to the forfeiture of jet pipe hydraulic actuation system hydraulic fault signal, control signal or the two and the emergency protection pattern such as lose simultaneously, the scope of jet pipe emergency protection is expanded, strengthened the reliability of engine operation and the Security of flight.
The present invention the substantial effect that can obtain be, expanded the protective range of emergency protection system, cancelled the emergency protection pressurized strut, simplified the structure of A9 pressurized strut, alleviated the weight of hydraulic actuation system.The present invention simultaneously is used for the repacking of existing jet pipe hydraulic actuation system, and is little to the change of existing nozzle structure.
Description of drawings
Fig. 1 is the oil circuit annexation and the structure diagram of jet pipe A9 actuating system.
Fig. 2 is a hydraulic schematic diagram of the present invention.(mark among the figure: 1. electrohydraulic control, 2. coordinate valve (two), 3. pressurized strut, 4. one-way valve, 5. accumulator, 6. emergent valve, 7. servo guiding valve, 8. hydraulic lock, 9. series flow control valve, 12. retarders.).
Fig. 3 is the hydraulic structure schematic representation of one embodiment of the invention.
Fig. 4 is the structural plan schematic representation of one embodiment of the invention.(mark among the figure: 3. pressurized strut, 11. integrated valve bodies, 12. retarders, 13. connecting rod rack assemblies, 14. casing supporting elements.)
Fig. 5 is the hydraulic structure schematic representation of another embodiment of the present invention.(mark among the figure: 1. electrohydraulic control, 2. coordinate valve (two), 3. pressurized strut, 6. emergent valve, 7. servo guiding valve, 8. hydraulic lock, 16. solenoid valves, 17. pressure signal devices, 18. throttling laminates, 19. distributing valves.)
Fig. 6 is the longitudinal section organigram of the servo guiding valve that is associated with the pressurized strut displacement.(mark among the figure: 71. spools, 71. spools, 72. valve pockets, 73. guide pin bushings, 74. flat keys (2), 75. end caps, 76.O RunddichtringO, 11. integrated valve bodies.)
Fig. 7 is that structure and the position that servo spool valve puts each hydraulic fluid port concerns schematic representation, and (P is a filler opening among the figure, and T is a return opening, and A and B are control port, is represented by dotted lines, and its physical location and shown position are upwards differing 90 ° week.)
Fig. 8 is servo guiding valve, hydraulic lock and the pressurized strut work relationship schematic representation under fault mode.
Fig. 9 is a longitudinal section organigram of surveying and call the emergent valve of fault mode.
Figure 10 is a coordination valve longitudinal section organigram of coordinating working connection and protection oil circuit work relationship.
Figure 11 is that the retarder master who is used to change the pressurized strut signal looks schematic representation and schematic side view.(mark among the figure: 121. casings, 122. worm shafts, 123. gears, 124. turbine shafts, 125.127. bearing, 126.128. end cap.)
Embodiment
Fig. 1 shows annexation and three A9 pressurized strut 3 (1), 3 (2) and 3 (3) and the A9 connection relation of making rotating ring (vector ring) of the present invention in the A9 actuating system.A91, A92, A93 are respectively the emergency resetting hydraulic systems of three A9 pressurized struts 3 (1), 3 (2) and 3 (3) among the figure, pressurized strut is by emergency resetting hydraulic system A91 of the present invention, A92, A93 control, A9 is made rotating ring (15) place different attitudes, realize pitching and driftage instruction.Three cover systems are parallel between high pressure fuel source and the return tube, and every cover system is composed in parallel by electro-hydraulic servo main system oil circuit (with A91 (1) expression) and EMR emergency reset oil circuit (with A91 (2) expression, being also referred to as the emergency protection oil circuit).Under the normal working, electro-hydraulic servo main system oil circuit A91 (1) in each system, A92 (1), A93 (1) are under flight-control computer control, to three pressurized strut fuel feeding, control A9 makes the attitude of rotating ring, the translation of rotating ring or tiltedly moving (position shown in the figure is for tiltedly moving, and this moment, jet pipe was in the vector working state) are done in realization; When system breaks down (as losing oil supply pressure or electrical control signal), then emergency protection oil circuit A91 (2), A92 (2), A93 (2) are under emergent control system control separately, physical location according to corresponding pressurized strut, corresponding oil pocket fuel feeding to pressurized strut, three pressurized struts are returned to the neutral position, make as rotating ring and place non-vector attitude (as shown in phantom in FIG.), so that aircraft is in controllable state.
Fig. 2 is the principle sketch of emergency resetting hydraulic system.Hydraulic system is divided into main system oil circuit A91 (1) and emergency protection oil circuit A91 (2), shown in two frame of broken lines among the figure.Wherein working connection A91 (1) coordinate valve (2) by electrohydraulic control (1), pressurized strut (3) and two and advance, return line constitutes; Emergent oil hydraulic circuit A91 (2) by servo guiding valve (7), one-way valve (4), accumulator (5), emergent valve (6), series flow control valve (9), hydraulic lock (8), and pressurized strut (3) constitute; Servo guiding valve, retarder (12) and the connecting rod rack assembly (not shown) that is connected in the pressurized strut caudal peduncle constitute the emergent closed loop control system of a cover machine feedback, the work of the emergent oil circuit of control.Two the cover oil circuits is parallel between oil sources, return tube and the pressurized strut, respectively under proper functioning and standby mode of operation to the pressurized strut fuel feeding.Electrohydraulic control, coordination valve and emergent valve are taked electric liquid interlocking: electrohydraulic control and emergent valve electromagnet electric interlock, emergent valve is taked hydraulic interlocking with the coordination valve, promptly the oil outlet of emergent valve is communicated with the control port of coordinating valve, and working connection is communicated with emergent valve control port.
Fig. 3 shows the hydraulic structure schematic diagram of one embodiment of the invention, electro-hydraulic servo main system oil circuit normal work period, working connection through the electrohydraulic control of flight-control computer control to the pressurized strut feed flow, promotion pressurized strut work is with reference to Fig. 1, when three A9 pressurized struts during with moved further, do rotating ring (15) translation, change the size of nozzle exit area A9, move and make then that to make rotating ring tiltedly moving, change the direction vector of jet pipe when three pressurized struts are asynchronous.Meanwhile working connection through one-way valve (4) to accumulator (5) topping up.
When electricity, liquid fault take place in the main system oil circuit, take the emergent valve of electric liquid interlocking to open with electrohydraulic control and coordination valve, call fault mode, start the work of EMR emergency reset hydraulic circuit, emergent fluid in the accumulator enters the protection oil circuit through emergent valve, simultaneously, and under the emergency oil action of hydraulic force, coordination valve in the working connection is closed, and cuts off the advancing of electrohydraulic control and pressurized strut, oil circuit.Under emergent control system effect, the servo guiding valve control emergent fluid related with the pressurized strut displacement, enter the relevant oil pocket of main pressurized strut through hydraulic lock, promote pressurized strut to the neutral position, after three A9 pressurized struts all arrive the neutral position, be in emergent attitude as rotating ring, attitude shown in Fig. 1 dotted line, adjustment sheet places the emergency protection attitude, and jet pipe is in non-vector working state.Hydraulic lock is in closed condition under the control of servo guiding valve at this moment, and accumulator stops to the pressurized strut fuel feeding, and hydraulic lock is locked in the neutral position with pressurized strut, and enough deflection stiffness are provided.Pressure regulator valve 9 (1) among the figure and throttle valve 10 are formed series flow control valve, under standby mode of operation, during the oil-feed of pressurized strut rod chamber, might stall under the acting in conjunction of aerodynamic loading and hydraulic pressure, series flow control valve can limit the too fast pressurized strut speed of retraction, and promptly the maximum speed to three A9 pressurized struts answer neutral positions limits.
At the Protective system duration of work, if main system automatically controlled signal and oil pressure recover, under the effect of electric liquid interlocking, emergent valve is closed, and coordinates valve and opens, and then the working state of two systems automaticallyes switch, recover the automatic control of electro-hydraulic servo main system, Protective system withdraws from state of a control.
Fig. 4 shows the overall structural arrangement of one embodiment of the invention and the annexation of emergent control system.Each control valve of hydraulic system (comprising one-way valve, emergent valve, servo guiding valve, hydraulic lock, throttle valve, series flow control valve and coordination valve etc.) all is installed in the integrated valve body (11), electrohydraulic control (1) and speed reducer (12) are installed in the external side of integrated valve, the integrated valve assembly is installed in the pressurized strut (3), the caudal peduncle in pressurized strut left side is connected with A9 steering ring (not shown), and right-hand member is connected on the engine crankcase supporting element (14).The connecting rod and the pressurized strut caudal peduncle of the tooth bar link assembly (13) in the emergent control system are hinged, after pressurized strut piston displacement signals collecting, passing to retarder by tooth bar handles, pressurized strut displacement signal after treatment passes to servo valve core of the spool valve, control the opening amount of the relevant valve port of servo guiding valve, change fuel delivery to the corresponding oil pocket of pressurized strut.This control system adopts machine feedback mode, does not rely on electrical control signal, but therefore proper functioning under the electrical failure pattern.
Fig. 5 shows the hydraulic circuit and the structural drawing of another embodiment of the present invention.The working connection of hydraulic system coordinates valve (2) by electrohydraulic control (1), distributing valve (19), two and A9 pressurized strut (3) is formed, the oil sources of working connection is a high pressure oil, level pressure oil is as the control oil sources of electrohydraulic control, electrohydraulic control is controlled by flight-control computer, as the action of pilot valve control distributing valve.The emergency protection oil circuit is made up of emergent valve (6), servo guiding valve (7), hydraulic lock (8), pressurized strut (3), throttling laminate (15), solenoid valve (16) and pressure signal device (17), adopts independent emergent oil sources to be protection oil circuit fuel feeding (substituting the accumulator of going up in the example) during emergency protection.Adopt pressure signal device to gather working connection charge oil pressure signal, be used to control the unlatching of emergent valve, thus the fault mode of identification forfeiture oil supply pressure; Solenoid valve (16) and electrohydraulic control (1) electric interlock, when electrohydraulic control cuts off the power supply, solenoid valve is opened, the level pressure oil pocket and the return tube that are communicated with emergent valve spool both sides, emergent valve spool is moved to left under spring action, open emergent oil circuit, to servo guiding valve fuel feeding, promptly by solenoid valve and emergent valve common identification electrical failure pattern.The series flow control valve that replaces reduction valve among first embodiment and throttle valve to constitute with the throttling laminate, under standby mode of operation, the pressurized strut speed that the restriction retraction is too fast promptly limits the maximum speed that neutral positions are replied in three A9 pressurized struts.
Fig. 6～Fig. 8 has illustrated the structure and the working principle of servo guiding valve (7).
Servo guiding valve (7) shown in Figure 6 is one of major control valve of emergency resetting hydraulic system, is that the meta function is Y type, nesting type structure, is installed on the 3-position 4-way motor valve in the integrated valve body (11).As shown in Figure 7, advancing on the valve pocket (72), return opening (P, T) and two control port (A, the stroke of axial position B) and A9 pressurized strut and the neutral position is associated and depend on the velocity ratio of retarder simultaneously, advance, return opening is provided with in pairs symmetrically and is parallel in the axial direction, two control port that is arranged in parallel equally in the axial direction and P, the T mouth becomes 90 ° of angles in the circumference, advance, one side adopts V-type to return opening in the neutral position, filler opening is negative opening, effectively reduce when arriving the neutral position servo guiding valve to the fuel delivery of pressurized strut, the speed of the answer neutral position of pressurized strut is slowed down, reduce the vibration of spool, increase the working stability of servo guiding valve at the place, neutral position; Two control ports have the small amount of coincidence with return opening, are at spool (71) when closing (being the neutral position, shown in Fig. 7 dotted line), and three hydraulic fluid ports (A, B, T) are communicated with, and the meta function that makes servo guiding valve is the Y type.The outer filler opening both sides of valve pocket are provided with seal ring and prevent that high-voltage oil liquid is vertically to the control port seepage.Each hydraulic fluid port links to each other with control corresponding valve oil mouth, and wherein filler opening (P) and emergent valve oil outlet link to each other, two return openings (T) are connected by the communication of the oil duct in the valve body (11) and with the pressure regulator valve filler opening, two control ports (A, B) are communicated with the advancing of hydraulic lock (8), return opening respectively.Spool shown in Fig. 3 (71) adopts three shoulder types, the spool right-hand member is a screw mandrel, cooperate with the nut in retarder (12) turbine shaft that is installed on the external side of integrated valve (being the screw mandrel place), the spool inside groove cooperates with guide pin bushing (73), guide pin bushing is fixed on the integrated valve body (11) by two flat keys (74), spool (71) can only be endwisely slipped and can not rotate, and there is a pore in screw mandrel end axle center, inside groove is communicated with atmosphere, is used for the pressure reduction that the balance guide pin bushing forms when inside groove is mobile.
With reference to Fig. 8, spool continues to slide under tooth bar link assembly (13) and retarder (12) driving, so the working position of spool is corresponding with the pressurized strut piston position.Normal work period, because emergent valve is closed, servo guiding valve cuts little ice; When calling fault mode when emergent valve cone valve unlatching, under the effect of driving mechanism, the physical location of pressurized strut has in time been reflected in the position of spool, therefore the opening direction of each hydraulic fluid port of guiding valve is just corresponding with piston position with the opening amount, determined direction and the fuel delivery of EMR emergency reset oil circuit thus: be in retraction and when jet pipe placed big nozzle exit area direction (position shown in Fig. 8-a) at A9 pressurized strut (3) piston rod to the pressurized strut fuel feeding, the P mouth of servo guiding valve is communicated with the B mouth, the A mouth is communicated with the T mouth, through hydraulic lock (8) to pressurized strut rodless cavity fuel feeding, the pressurized strut piston stretches out, move to the neutral position, under the driving mechanism effect, spool is also shifted to the neutral position, then valve port turns down gradually, servo guiding valve oil inlet P is closed (position shown in Fig. 8-b) simultaneously when pressurized strut piston arrives neutral position, the hydraulic lock locking is locked the pressurized strut piston in the neutral position.At this moment, because slide valve function is the Y type, then two oily windows of control are communicated with return opening, have guaranteed that hydraulic lock is at neutral position locking pressurized strut piston.Be in the A9 pressurized strut and stretch out and when jet pipe placed little nozzle exit area direction (position shown in Fig. 8-c), the P mouth of servo guiding valve is communicated with the A mouth, the B mouth is communicated with the T mouth, and to pressurized strut rod chamber fuel feeding, pressurized strut piston retraction is locked after arriving the neutral position.
Referring again to Fig. 4, the control system of a machine feedback has been formed in tooth bar link assembly, retarder, servo guiding valve and pressurized strut jointly, this system does not rely on electrical control signal work, in time detect the displacement signal of pressurized strut, and utilize the fuel feeding direction and the fuel delivery of the emergent oil circuit of this SC sigmal control.
The emergent valve (6) of Fig. 9 is used for detecting and calling fault mode, be the unidirectional cone valve of Normally closed type of an electricity, hydraulic control system, nesting type structure is installed in the integrated valve body (11), its electromagnet (63) is taked electric interlock with electrohydraulic control (1) electromagnetic coil, and promptly the two is switched on simultaneously or cuts off the power supply; High-pressure oil pipe is connected in control port, oil outlet is communicated with two control ports of coordinating valve, make emergent valve and coordinate the valve hydraulic interlocking, filler opening connects accumulator (5) oil outlet, so the emergency oil oil pressure that the electromagnetic force that provided by electromagnet of the action of poppet valve core (62), oil pressure that control port provides and emergent valve filler opening place act on the cone valve side is controlled jointly.Under the situation of electromagnetic force or the forfeiture of control oil pressure, emergent valve spool is opened, and calls fault mode, and the high pressure oil that accumulator is stored enters servo guiding valve, and closes the fuel feeding of emergent oil circuit when working connection normal power-up, fuel feeding.
Emergent valve also can adopt solenoid directional control valve in parallel and hydraulicchange-over valve to replace, and utilizes these two selector valves to discern (judgement) electrical failure pattern and hydraulic fault pattern respectively, calls the work of emergency oil road under corresponding fault mode.
Coordination valve (2) shown in Figure 10 is a fluid-control one-way cone valve open in usual, nesting type structure, in installation and the integrated valve body, be arranged between electrohydraulic control (1) hydraulic fluid port of working connection and the pressurized strut (3) (two), the control port of coordinating valve is communicated with two oil pockets that advance, return opening connect pressurized strut respectively with emergent valve oil outlet.When calling emergent fault mode, emergent valve is in the time of emergent oil circuit fuel feeding, the control port of coordinated valve, control oil pocket to the big end of spool left side is carried emergency pressure oil, and control poppet valve core (22) moves to right, close valve orifice, disconnects working connection, the electro-hydraulic servo oil circuit quits work, avoid emergent fluid to leak by electrohydraulic control, cause the oily phenomenon of string takes place between two systems, influence the functional reliability and the dynamic performance of Protective system through pressurized strut.By coordinating valve, the working state of two cover systems is separated fully, two systems can be worked independently.Valve pocket (21) is offered the draining hole and is communicated with the system oil return mouth, discharges the fluid between big end of spool and the valve pocket (21) when being used to coordinate the valve unlatching.Coordinate valve and also can adopt the liquid controlled reversing valve arrangement.
Figure 11 is the retarder (12) in the signal feed back mechanism, is used to change and transmit the displacement signal of pressurized strut, and its velocity ratio has determined the structure of servo guiding valve.Retarder adopts gear---Worm type structure, side is loaded on servo guiding valve (7) outside in the integrated valve body (11), is made up of casing (121), worm shaft (122), turbine shaft (124), gear (123), bearing (125,127), end cap parts such as (128,129).The gear of installing on the worm shaft is with tooth bar (13) engagement of the connecting rod rack assembly that passes reduction case (121) bottom guide groove, processing inner nut in the turbine shaft, with the screw mandrel engagement of servo valve core of the spool valve (71) end.Be connected in the displacement signal of the connecting rod of pressurized strut caudal peduncle with the pressurized strut piston, pass to gear (123) on the worm shaft (122) by tooth bar (13), signal through conversion for the first time is delivered to worm gear, pass to the screw mandrel of servo guiding valve (7) after the conversion of signal secondary by the nut of worm gear inside, drive spool (71) action; Simultaneously, retarder end cap (129) also provides axially locating for servo guiding valve valve pocket, with reference to Fig. 4.
Though this specification is introduced and described preferred means of the present invention, the present invention has only provided an example.Under the prerequisite of spirit of the present invention, the people that know this respect technology can carry out that many-side is improved, remodeling, can also comprise some other control unit, can apply the present invention to the motor actuating system of other type etc.Therefore, the invention is not restricted to the embodiment here, those skilled in the art should be within protection scope of the present invention for improvement and modification that the present invention makes according to announcement of the present invention.
Claims (6)
1, a kind of axisymmetric vectoring exhaust nozzle A9 start emergency resetting hydraulic system, comprise the EMR emergency reset oil hydraulic circuit of emergent control system control and the electro-hydraulic servo main system oil circuit of flight-control computer control, it is characterized in that: the EMR emergency reset oil hydraulic circuit comprises servo guiding valve (7), one-way valve (4), accumulator (5), emergent valve (6), hydraulic lock (8), series flow control valve (9) and A9 pressurized strut (3), emergent valve and electrohydraulic control, coordination valve are electricity, liquid interlock, and emergent oil sources is provided by accumulator; Electro-hydraulic servo main system oil circuit comprises electrohydraulic control (1), A9 pressurized strut and coordinates valve (2), coordinates valve and be serially connected between electrohydraulic control and the pressurized strut.
2, axisymmetric vectoring exhaust nozzle A9 start emergency resetting hydraulic system according to claim 1, it is characterized in that: emergent control system comprises tooth bar link assembly, retarder, servo guiding valve and pressurized strut, rod hinge connection is on the caudal peduncle of pressurized strut, with the tooth bar and the reducer gear engagement of rod hinge connection, the nut in the retarder turbine shaft cooperates with the screw mandrel of servo valve core of the spool valve end.
3, axisymmetric vectoring exhaust nozzle A9 start emergency resetting hydraulic system according to claim 1 and 2, it is characterized in that: servo guiding valve (7), a meta function is the Y type, nesting type structure, be installed on the motor-driven guiding valve of 3-position 4-way in the integrated valve body (11), advancing on the valve pocket (72), the axial position of return opening and two control ports is associated with the stroke and the neutral position of A9 pressurized strut, and depend on the velocity ratio of retarder simultaneously, advance, return opening is provided with in pairs symmetrically and is parallel in the axial direction, two control ports that are arranged in parallel equally in the axial direction with advance, return opening becomes 90 ° of angles in the circumference, advance, one side adopts V-type to return opening in the neutral position, and filler opening is negative opening; Spool (71) is three shoulder types, and the other end is a screw mandrel, and the nut interior with retarder (12) turbine shaft in the outside cooperates, and relies on retarder to drag, and the spool inside groove cooperates with guide pin bushing (73), and guide pin bushing is fixed in the valve opening of integrated valve body (11) by two flat keys.
4, axisymmetric vectoring exhaust nozzle A9 start emergency resetting hydraulic system according to claim 1, it is characterized in that: emergent valve (6), the unidirectional cone valve of Normally closed type of electricity, hydraulic control system, nesting type structure, be installed in the integrated valve body (11), its electromagnet (63) is an electric interlock with electrohydraulic control (1), high-pressure oil pipe is connected in control port, and oil outlet is communicated with two control ports of coordinating valve, makes emergent valve and coordinates the valve hydraulic interlocking.
5, axisymmetric vectoring exhaust nozzle A9 start emergency resetting hydraulic system according to claim 1, it is characterized in that: coordinate valve (2), fluid-control one-way cone valve open in usual, two oil pockets of it advances, return opening connects electrohydraulic control respectively two control ports and pressurized strut, control port is communicated with the oil outlet of emergent valve (6).
6, axisymmetric vectoring exhaust nozzle A9 start emergency resetting hydraulic system according to claim 1 and 2, it is characterized in that: retarder (12), gear---Worm type structure, worm shaft (122) is gone up gear (123) is installed, tooth bar (13) engagement with the connecting rod rack assembly that passes reduction case (121) bottom guide groove, worm and wheel axle (122) cooperates, nut in the turbine shaft and the engagement of the screw mandrel of servo valve core of the spool valve (71) end, the retarder side is loaded on the integrated valve body (11), is positioned at the outside of servo guiding valve.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2006100241573A CN100523472C (en) | 2006-02-24 | 2006-02-24 | Axial symmetric vector spray-pipe A9 action emergency resetting hydraulic system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2006100241573A CN100523472C (en) | 2006-02-24 | 2006-02-24 | Axial symmetric vector spray-pipe A9 action emergency resetting hydraulic system |
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| Publication Number | Publication Date |
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| CN101025128A CN101025128A (en) | 2007-08-29 |
| CN100523472C true CN100523472C (en) | 2009-08-05 |
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| CNB2006100241573A Expired - Fee Related CN100523472C (en) | 2006-02-24 | 2006-02-24 | Axial symmetric vector spray-pipe A9 action emergency resetting hydraulic system |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| US9599212B2 (en) * | 2009-11-16 | 2017-03-21 | Textron Innovations Inc. | Emergency subsystem for a fluid system |
| CN102168699B (en) * | 2011-04-27 | 2013-08-07 | 杭州和利时自动化有限公司 | Hydraulic interceptor valve |
| CN102287268B (en) * | 2011-08-05 | 2013-10-30 | 中国南方航空工业(集团)有限公司 | State transition valve and system |
| CN106368937B (en) * | 2016-11-14 | 2018-02-16 | 宁波恒力液压股份有限公司 | Hydraulic pump SERVO CONTROL structure |
| CN112747097B (en) * | 2020-12-30 | 2022-05-24 | 苏州绿科智能机器人研究院有限公司 | Alternative operation type RV reducer integrated device |
| CN113299173B (en) * | 2021-06-08 | 2023-02-10 | 无锡航试电液系统有限公司 | Nozzle demonstration oil way flow applied to aerospace |
| CN113756992B (en) * | 2021-08-23 | 2022-08-19 | 南京理工大学 | Gas driven missile swing spray pipe |
| CN113928543B (en) * | 2021-11-19 | 2023-09-08 | 中国直升机设计研究所 | Helicopter undercarriage retraction control system |
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| US4805515A (en) * | 1983-11-18 | 1989-02-21 | General Electric Company | Fail-safe servovalve system |
| US5074495A (en) * | 1987-12-29 | 1991-12-24 | The Boeing Company | Load-adaptive hybrid actuator system and method for actuating control surfaces |
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| CN101025128A (en) | 2007-08-29 |
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