CN206816400U - A kind of integrated form ring manifold wall gaseous fuel jet mixing device with piezo actuator - Google Patents

Abstract

The purpose of this utility model is to provide a kind of integrated form ring manifold wall gaseous fuel jet mixing device with piezo actuator, and the response of air valve opening and closing, while the controllable fuel gas injection lift of a valve can be improved by the mode of Piezoelectric Driving；Valve element bottom is using seal band and then forms air inlet ring cavity, and combustion gas enters axially into, and on the one hand avoids combustion gas interference, ensure that gas circuit balances, on the other hand alleviates valve seat quality, improve response speed；The stability of valve opening and closing, the response that intensifier is supplied and died can be ensured by pressure compensation opening, relief groove and pressure stabilizing cavity；By fuel anemostat cavity structure, fuel energy is distributed in whole device, realize the continuity and high responsiveness of feeder supply；By branch pipe flume structure, the gaseous fuel of ejection is formed vortex, promote the mixability of fuel and air, be advantageous to burn, improve device service behaviour.

Description

A kind of integrated form ring manifold wall gaseous fuel injection mixing with piezo actuator Device

Technical field

The utility model relates to the inlet duct of a kind of inlet duct, specifically gaseous propellant engine.

Background technology

The discharge standard of continuous improvement and increasingly serious problem of energy crisis propose new challenge to engine technology, The alternative fuel of many gaseous fuels as engine using headed by natural gas becomes grinding for domestic and international many researchers Study carefully emphasis, gaseous propellant engine also becomes widely studied object.A whole set of inlet duct, including from fuel gas injection valve to Inlet manifold arrives many parts such as cylinder valve, property of each part that fuel and air flow through for gaseous propellant engine again Can be all significant.Injection for gaseous fuel, should require to spray response it is high, while also require jetting stability, Reliably；And the flowing for gaseous fuel and air is, it is necessary to make gaseous fuel and air to be carried out before cylinder is entered Sufficiently mixing, energy resource consumption is saved to improve fuel economy.

To realize being sufficiently mixed for the high responsiveness of fuel supply and fuel and air, many researchers have studied one Serial gas handling system, although these system architectures provide a kind of preferable method for fuel gas supply, there is also one simultaneously A little deficiencies.Such as：Described in CN106050479A patents " a kind of fuel gas injection valve and injection tubular construction, mounting arrangements method " A kind of engine gas injection valve and nozzle structure, its feature are to have opened up many row's spouts in jet pipe side wall, each to arrange spray Mouthful it is interspersed, necessarily into the mixing that fuel and air are enhanced in degree, but gaseous fuel is from spout after spraying, The gas concentration of air intake duct in the radial direction can be reduced gradually, and this will also result in fuel and air undercompounding.

The content of the invention

The purpose of this utility model, which is to provide, fuel is sufficiently mixed before cylinder is entered with air, carry A kind of integrated form ring manifold wall gaseous fuel jet mixing device with piezo actuator of high burning efficiency.

What the purpose of this utility model was realized in：

A kind of integrated form ring manifold wall gaseous fuel jet mixing device with piezo actuator of the utility model, it is special Sign is：Including fuel gas injection valve, gas hood, fuel anemostat；

The fuel gas injection valve includes valve body, valve seat, valve rod, piezo-electric crystal, fluid power amplifier, dividing plate, valve element assembly, Valve body is fixedly arranged above fixed block, and straight trough is provided with the middle part of fixed block, and piezo-electric crystal is arranged in straight trough, and valve body is fixed on valve seat On, dividing plate is set in valve body, and fluid power amplifier is set above dividing plate, and valve element assembly is arranged on below dividing plate, below dividing plate Valve space is formed between valve body and valve seat, the fluid power amplifier includes big piston, valve piston, sleeve, and sleeve is arranged on dividing plate On, the center of sleeve upper end is thick outlet, and the end of sleeve upper end is thin outlet, and big piston is arranged in thick outlet, valve piston Be arranged in thin outlet, big piston support spring be set between the flange and sleeve of big piston, the flange and sleeve of valve piston it Between valve piston support spring is set, filled with hydraulic oil, big piston upper surface and piezo crystals in the sleeve below big piston, valve piston Body lower surface is fit together, and big piston exterior sets circle ring disk, and valve piston upper surface is bonded with circle ring disk lower surface, circle ring disk With groove is respectively provided with fixed block, the both ends of back-moving spring are arranged in the groove of circle ring disk and fixed block, described valve Core assembly includes armature, spring base, bottom plate, valve element, and armature, bottom plate, valve element are arranged while pass through fastening bolt from top to bottom Link together, spring base is located at outside armature and annular groove is formed between armature, and dividing plate lower surface sets annular groove, resets The both ends of spring are arranged in the annular groove of dividing plate and the annular groove of spring base, and pressure compensation opening is set at armature center, Relief groove is set on bottom plate, and valve element is hollow structure, and center pressure stabilizing cavity, the outer end of valve seat are set on the valve seat below valve element End pressure stabilizing cavity is set, and pressure compensation opening, relief groove, the hollow space of valve element and center pressure stabilizing cavity are communicated and formed interior Portion space, seal band is set on valve element, and seal band forms air inlet ring cavity, sets outlet annulus and guide pad on valve seat, lead It is located to block around valve element, outlet annulus is located at below air inlet ring cavity, and venthole is set below outlet annulus, is set on dividing plate logical Hole, the middle part of valve rod pass through through hole, and the top of valve rod is connected with circle ring disk, and the lower section of valve rod is fixed on one by jump ring and armature Rise；

The fuel anemostat includes tracheae main body, and tracheae main body includes supervisor and branch pipe, is responsible for the annulus knot for cavity Structure, supervisor's intercommunicating pore is set on circular ring structure, be main tube hub hole, the front end of branch pipe and the circular ring structure phase of supervisor in the middle part of annulus Logical, supervisor is connected and communicated be connected gas hood, is responsible for centre bore and connects free-air diffuser, is responsible for the branch pipe region at centre bore rear Combustion gas mixing area is formed, all branch pipes are affixed on the distribution of inlet manifold tube wall surrounding, skewed slot is opened up on the inside of branch pipe；

Venthole connection connection gas hood.

The utility model can also include：

1st, it is wavy shaped configuration above one end of supervisor's connection gas hood, it is frustum cone structure to be responsible at intercommunicating pore.

2nd, the end of branch pipe sets semicircle perforate, and the skewed slot on each branch pipe is four, its folder with inlet manifold axis Angle is respectively 30 °, 30 °, 45 °, 60 °.

The 3rd, extension is set on valve body, extension sets air inlet, and diversion cavity is set in the valve body below air inlet, Air inlet, diversion cavity are communicated and form exterior space, and exterior space communicates with inner space, and axial admission hole is set on valve element；

Combustion gas vertically flows into diversion cavity through air inlet, and a part of combustion gas is flowed into the center voltage stabilizing of inner space and valve seat Chamber, remaining combustion gas are flowed into above valve element, and a part of combustion gas stream is through axial air admission hole, full of the air inlet ring cavity on valve element, another portion Combustion gas is divided to flow into the end pressure stabilizing cavity of valve seat outer end；

When piezo-electric crystal is not powered on, the upper surface of seal band and valve seat on valve element is fitted close, and combustion gas is full of combustion gas The exterior space of the valve inner of injection valve and inner space；Piezo-electric crystal be powered after, piezo-electric crystal by current excitation so as to Elongation, promote big piston to move downward, the hydraulic oil in sleeve is compressed, in the presence of hydraulic fluid pressure, valve piston to Upper motion, valve rod also move upwards, and under the fixation of jump ring, band movable valve plug assembly moves upwards, until in sleeve Hydraulic fluid pressure returns to original state, and valve piston no longer moves, and valve element assembly stops therewith, and combustion gas is entered by the axial direction on valve element Stomata flows into, and by air inlet ring cavity, the space between valve element and valve seat, connection gas is vertically flowed out into by venthole Cover, incoming fuel anemostat, combustion gas are spread in the circular ring structure of supervisor afterwards, then are flowed into each branch pipe, are flowed into branch The combustion gas of pipe is injected to combustion gas mixing area by each skewed slot, and at the same time air enters from free-air diffuser by supervisor's centre bore Enter to combustion gas mixing area, in the presence of vortex, combustion gas is mixed with air and is flowed into inlet manifold；After piezo-electric crystal power-off, Piezo-electric crystal shortens, and in the presence of big piston support spring, big piston returns to initial position, in sleeve under hydraulic fluid pressure Drop, in the presence of back-moving spring, circle ring disk, valve piston move downward, and valve rod, valve element assembly move downward therewith, until Hydraulic fluid pressure returns to original state in sleeve, and big piston, valve piston return to initial position, and valve element assembly returns to initial bit Put, spool face is bonded with valve base surface, and fuel gas injection valve is closed, and gas circuit is closed.

Advantage of the present utility model is：The utility model valve element bottom is using seal band and then forms air inlet ring cavity, Combustion gas enters axially into, and on the one hand avoids combustion gas interference, ensure that gas circuit balances, on the other hand alleviates valve seat quality, carry High response speed；The stability of valve opening and closing, intensifier can be ensured by pressure compensation opening, relief groove and pressure stabilizing cavity The response for supplying and dying；By fuel anemostat cavity structure, fuel energy is distributed in whole device, realize supply dress Put the continuity and high responsiveness of supply；By branch pipe flume structure, the gaseous fuel of ejection is formed vortex, promote fuel with The mixability of air, be advantageous to burn, improve device service behaviour.

Brief description of the drawings

Fig. 1 is structural representation of the present utility model；

Fig. 2 is fuel gas injection valve general illustration；

Fig. 3 is valve element assembly schematic diagram；

Fig. 4 is fuel anemostat stereogram；

Fig. 5 is fuel anemostat front view；

Fig. 6 is the flow graph of gaseous fuel.

Embodiment

Illustrate below in conjunction with the accompanying drawings and the utility model is described in more detail：

With reference to Fig. 1-6, a kind of integrated form ring manifold wall gaseous fuel spray with piezo actuator in the utility model Mixing arrangement is penetrated, is divided into fuel gas injection valve 1, connection gas hood 2 and fuel anemostat 3.Fuel gas injection valve is mainly by fixed block 4, pressure 21 groups of electric crystal 5, back-moving spring 6, fluid power amplifier block, circle ring disk 12, valve rod 13, valve element assembly 18, valve body 6 and valve seat Into, it is characterized in that：The main body of valve body 6 is divided into two chamber portions up and down, is separated by dividing plate 17, is provided with dividing plate 17 symmetrical logical Hole；Fixed block 4 is located at the top of valve body 6, and blending bolt is fixed with valve body 6, between sealed with O-ring seal；Fixed block 4 is at center Position is provided with the straight trough of certain depth, and piezo-electric crystal 5 is arranged therein, and the less through hole of a diameter is provided with above straight trough, uses In connecting wires for arrangement piezo-electric crystal 5 and valve body outer control unit；The lower section of piezo-electric crystal 5 is fluid power amplifier block, by living greatly Plug 8, valve piston 15, big piston support spring 9, valve piston support spring 14 and sleeve 10 form, it is characterised in that：Big piston 8, Positioned at the upper end center of sleeve 10, slightly outlet and surrounding are carefully in outlet respectively for valve piston 15, and the inside of sleeve 10 is closing chamber, and inside is filled Full hydraulic oil 16；Sealing ring is disposed between piston 8, the side surface of valve piston 15 and the inwall of sleeve 10 greatly, to prevent in sleeve 10 The leakage of hydraulic oil 16；In addition in big piston 8, the flange of valve piston 15 and big piston support spring 9, valve piston support spring 14 Under effect, big piston 8, valve piston 15 will not be completely into sleeves 10, and the upper surface of big piston 8 is close to piezo-electric crystal 5 Lower surface, the lower surface of circle ring disk 12 is close in the upper surface of valve piston 15.The both ends of back-moving spring 7 be arranged in fixed block 4 with In groove on circle ring disk 12, the both ends of circle ring disk 12 are provided with circular hole, and screw thread is provided with hole, using screw thread by circle ring disk 12 and valve Bar 13 is linked together, and valve rod 13 is arranged in the through hole in dividing plate 17, and its lower end utilizes jump ring and the upper end of valve element assembly 18 It is fixed together；Valve element assembly 18 is arranged in the lower section of dividing plate 17；The both ends of armature back-moving spring 27 are arranged in dividing plate 17 With on the annular groove of the upper spring seat 23 of valve element assembly 18；The lower section of valve element assembly 18 is the structure of valve seat 21；Valve seat 21 and valve body It is bolted to connection between 6 together, mating surface therebetween realizes sealing by O-ring seal.The work of gas hood 2 With being original mixed airway being divided into two parts, circulated gases fuel and air respectively.The one end of gas hood 2 and fuel gas injection Valve 1 exports close connection, and the other end is then closely connected with fuel anemostat 3, and fuel sprays to enter through gas hood 2 from fuel gas injection valve 1 Enter anemostat 3.Fuel anemostat 3 is located in inlet manifold, is close to inlet manifold arrangement, can be divided into supervisor 30 according to design feature With branch pipe 31, supervisor 30 is the toroidal cavity structure of a connection gas hood 2, and supervisor's centre bore is connected to free-air diffuser；In master The opposite side of pipe is connected to some branch pipes 31, and supervisor 20 and branch pipe 31 are interconnected.Opened up on the madial wall of branch pipe 31 a series of The skewed slot 32 that angle does not wait, the angle of skewed slot 32 use gradual change form, and gaseous fuel can be by this series of inclined hole from each Branch pipe 31 is flowed into combustion gas mixing area, and make from branch pipe 31 be ejected into mixed zone gaseous fuel formed vortex, accelerate fuel with The mixing of air；Branch pipe end is provided with semi-circular hole, to prevent gaseous fuel to be arrested in branch pipe.

Fig. 3 is the part of valve element assembly 18, among valve body 6, by armature 22, spring base 23, bottom plate 24, valve element 25, The grade of armature back-moving spring 27 forms, it is characterized in that：Armature 22, spring base 23, bottom plate 24 and valve element 25 pass through fastening It is bolted together, the side surface inside spring base 24 is in contact with the side surface of armature 22, and valve element 25 is by valve element main body, close Seal ring band 29 forms, and on its circumferentially fixed four guide pad 19 on valve seat, ensures itself perpendicularity, ensures that device is stable Property.The center of armature 22 opens up pressure compensation opening 26, the circumferential pressure that pressure compensation opening 26 opens up with the lower section bottom plate 24 of armature 22 Dynamic balance groove 28 communicates, and inside and outside gas circuit is reached balance, and combustion gas no pressure is poor inside and outside valve element assembly 18, avoids from motion When by extra axial force, improve the stability and response of fuel gas injection.

In the fuel gas injection valve course of work, driven using piezo electrics, improve fuel gas injection response, and can realize The changeability of the lift of fuel gas injection valve 1.When piezo-electric crystal 5 is not powered on, under the effect of the pretightning force of armature back-moving spring 27, valve element Assembly 18 remains motionless in initial position, lower surface and the valve seat 21 of the seal band 29 of the valve element 25 in valve element assembly 18 The upper surface of outlet annulus 20 be brought into close contact, now outlet annulus 20 not yet connects with the inner space of valve body 6, and combustion gas is full of combustion Whole space inside the valve body 6 of gas jet valve.

When engine enters induction stroke, piezo-electric crystal 5 be powered after, piezo-electric crystal 5 by current excitation so as to extend, Big piston 8 is promoted to move downward, the hydraulic oil 16 in sleeve 10 is compressed, pressure rise, in the effect of the pressure of hydraulic oil 16 Lower valve piston 15 moves upwards, and valve piston 15 is symmetrically distributed in the lower section of circle ring disk 12, smoothly promotes circle ring disk 12 to transport upwards Dynamic, due to the connection function of screw thread, the also motion upwards of valve rod 13, band movable valve plug assembly 18 is moved upwards, and air valve is opened, In the motion process of valve element assembly 18, outer guiding is realized by guide pad 19, ensure that the stability of air valve work.Combustion gas by The surrounding space of valve element 25, by having the air inlet ring cavity 35 of certain depth around multiple-sealed annulus 29, via valve element 25 and valve Space between seat 21, vertically flowed out after being finally oriented to via gas outlet 36, multiple tracks annulus, face are used between valve element 25 and valve seat 21 Sealing, voltage stabilizing balance, the stability that device works is improved, and wider annulus area can reduce impact, and it is reliable to improve device Property.

Pressure stabilizing cavity 11 is respectively provided with the center of valve seat 21 and peripheral place, can effectively suppress gaseous-pressure inside fuel gas injection valve Fluctuation ventilation can be made uniform, realize the steady operation of air-flow, reliably working, and then improve the response speed of device.

Fuel flows into fuel anemostat 3 by gas hood 2, and gaseous fuel spreads in the circular ring structure of supervisor 30, then flows into Into each branch pipe 31, the gaseous fuel for being flowed into branch pipe 31 is injected to combustion gas mixing area by each skewed slot 32, at the same time Fresh air enters combustion gas mixing area from free-air diffuser by supervisor's centre bore, because branch pipe is distributed in inlet manifold Position, destroy the boundary layer of air of manifold wall formation, increase the tubulence energy of air flow, additionally due to the skewed slot on branch pipe 32 take the angle design of gradual change, therefore gaseous fuel can produce vortex when being injected to mixed zone, in the presence of vortex, combustion Material can be carried out sufficiently mixing and is flowed into again in cylinder with air.

After engine induction stroke terminates, the power-off of the interior loop of fuel gas injection valve 1, piezo-electric crystal 2 shortens, in big piston branch In the presence of supportting spring 9, big piston 8 begins to return to initial position, and the pressure of hydraulic oil 16 declines in sleeve 10, in back-moving spring 7 In the presence of, circle ring disk 12, valve piston 15 start to move downward, and valve rod 13, valve element assembly 18 move downward therewith, until set The pressure of hydraulic oil 16 returns to original state in cylinder 10, and big piston 8, valve piston 15 return to initial position, now valve element assembly 18 Also corresponding to return to initial position, the surface of valve element 25 is bonded with the surface of valve seat 21, comes back to initial position, and fuel gas injection valve closes Close, gas circuit is closed.Flowing of the fuel in fuel anemostat 3 is also just basic to be stopped, and fuel is just stored in gas hood 2, supervisor 30 In each branch pipe 31.Until during next induction stroke, fuel gas injection valve 1 and cylinder valve are opened, gas hood 2, supervisor are stored in 30th, the fuel in branch pipe 31 can be pushed to combustion gas mixing area by follow-up fuel, and cylinder is entered after being mixed with air, is thus carried The high continuity and response of whole inlet duct supply.

A kind of integrated form ring manifold wall gaseous fuel jet mixing device with piezo actuator in the utility model, It is divided into fuel gas injection valve, connection gas hood and fuel anemostat.Fuel gas injection valve mainly by fixed block, piezo-electric crystal, back-moving spring, Fluid power amplifier block, circle ring disk, valve rod, valve element assembly, valve body and valve seat composition, valve body are divided into two cavitys up and down Part, separated by dividing plate, symmetrical through hole is provided with dividing plate；Fixed block is located above valve body, and blending bolt is fixed with valve body, it Between sealed with O-ring seal；Fixed block is provided with the straight trough of certain depth in center, and piezo-electric crystal is arranged therein, in straight trough Top is provided with the less through hole of a diameter, for arranging connecting wires for piezo-electric crystal and valve body outer control unit；Under piezo-electric crystal Side is fluid power amplifier block, is made up of big piston, valve piston, big piston support spring, valve piston support spring and sleeve, greatly Positioned at sleeve upper end center, slightly carefully in outlet, sleeve inner is closing chamber to valve piston for outlet and surrounding respectively, and inside is full of hydraulic pressure Oil；Sealing ring is disposed between size piston side surface and sleeve lining, to prevent the leakage of hydraulic oil in sleeve；In addition big Under valve piston flange and the effect of big valve piston support spring, big valve piston will not be completely into interplanting, and makes the upper of big piston The lower surface of piezo-electric crystal is close on surface, and circle ring disk lower surface is close in valve piston upper surface.The both ends of back-moving spring are respectively arranged In the groove on fixed block and circle ring disk, the both ends of circle ring disk are provided with circular hole, and screw thread is provided with hole, using screw thread by circle ring disk Linked together with valve rod, valve rod is arranged in the through hole in dividing plate, and its lower end is fixed using jump ring and valve element assembly upper end Together；Valve element assembly is arranged in below dividing plate, is made up of armature, spring base, bottom plate, valve element, armature back-moving spring etc., is held in the mouth Iron, spring base, bottom plate and valve element pass through fastening bolt and linked together, the side surface and armature inside spring base Side surface is in contact, and the both ends of armature back-moving spring are arranged on the annular groove of dividing plate and spring base, and valve element is by valve element master Body, seal band form, and on its circumferentially fixed four guide pad on valve seat, ensure itself perpendicularity；It is valve below valve element Holder structure；Together with valve seat is bolted to connection between valve body, mating surface therebetween is by O-ring seal come real Now seal.The effect of gas hood is original mixed airway being divided into two parts, difference circulated gases fuel and air.Gas hood One end is closely connected with fuel gas injection valve outlet, and the other end is then closely connected with fuel anemostat, and fuel sprays from fuel gas injection valve Go out and enter anemostat through gas hood.Fuel anemostat is located in inlet manifold, is close to inlet manifold arrangement, can be divided according to design feature For supervisor and branch pipe, supervisor is the toroidal cavity structure of a connection gas hood, and supervisor's centre bore is connected to free-air diffuser；In master The opposite side of pipe is connected to some branch pipes, and supervisor and branch pipe are interconnected.A series of angles are opened up on branch pipe madial wall Skewed slot, angle of bevel uses gradual change form, and gaseous fuel can be flowed into combustion by this series of inclined hole from each branch pipe Gas mixed zone, and the gaseous fuel for making to be ejected into mixed zone from branch pipe forms vortex, accelerates the mixing of fuel and air；Branch pipe end End is provided with semi-circular hole, to prevent gaseous fuel to be arrested in branch pipe.

Armature part in fuel gas injection valve, below the dividing plate, center opens up pressure compensation opening, pressure compensation opening with The circumferential pressure compensating groove that bottom plate opens up below armature communicates, and inside and outside gas circuit is reached balance, inside and outside valve element assembly combustion gas without Pressure differential, by extra axial force when avoiding from motion, improve the stability and response of fuel gas injection.

Valve element assembly and valve seat junction part, are interspersed using seal band and outlet annulus in fuel gas injection valve Form carry out face sealing, while big zonary structure can reduce architecture quality, reduce impact, improve device working stability Property.

The center of fuel gas injection valve seat and periphery are provided with pressure stabilizing cavity, pressure stabilizing cavity and the valve element group of valve seat center in device Combustion gas space inside zoarium is connected, and the pressure stabilizing cavity at valve seat periphery is connected with the diversion cavity in valve body, can be effective The fluctuation of check valve internal gas pressure, improve device job stability, realization device high response speed.

Gas hood part in device, its surface texture use larger radius of curvature, avoid more sharp angular structures, Fuel can so be reduced from injection valve through the restriction loss during gas hood penetrating tracheae main part.

Each branch pipe in device in fuel anemostat, it is evenly arranged in the position of gas manifold tube wall, such knot Structure design can destroy the boundary layer of air of manifold wall formation in gas circulation, increase the tubulence energy of air flow, with enhancing Mixing between fuel and air.

A kind of integrated form ring manifold wall gaseous fuel jet mixing device with piezo actuator can strengthen fuel confession To response, fuel gas injection valve first opens response using Piezoelectric Driving mode and pressure balance pore structure enhancing valve element；When Fuel gas injection valve is opened, and fuel is flowed into dyestuff anemostat through gas hood, is finally mixed and is flowed into cylinder with air；In gas injection Penetrate valve and after cylinder valve all closes, can be by from spray because fuel and air can be carried out certain isolation by the present apparatus Penetrating valve and spraying but fail to timely enter the gaseous fuel storage of cylinder prevents divergence loss in the cavity of fuel anemostat, treats down After secondary snifting valve and cylinder valve are opened, the portion gas fuel, which can be promptly supplied in cylinder, to be used to burn, and is improved Fuel supply response.

Claims (5)

1. a kind of integrated form ring manifold wall gaseous fuel jet mixing device with piezo actuator, it is characterized in that：Including combustion Gas jet valve, gas hood, fuel anemostat；

The fuel gas injection valve includes valve body, valve seat, valve rod, piezo-electric crystal, fluid power amplifier, dividing plate, valve element assembly, valve body Fixed block is fixedly arranged above, straight trough is provided with the middle part of fixed block, piezo-electric crystal is arranged in straight trough, and valve body is fixed on valve seat, valve Dividing plate is set in body, fluid power amplifier is set above dividing plate, and valve element assembly is arranged on below dividing plate, the valve body below dividing plate with Valve space is formed between valve seat, the fluid power amplifier includes big piston, valve piston, sleeve, and sleeve is arranged on dividing plate, sleeve The center of upper end is thick outlet, and the end of sleeve upper end is thin outlet, and big piston is arranged in thick outlet, and valve piston is arranged on carefully In outlet, big piston support spring is set between the flange and sleeve of big piston, set between the flange and sleeve of valve piston small Piston support spring, filled with hydraulic oil, big piston upper surface and piezo-electric crystal lower surface in the sleeve below big piston, valve piston Fit together, big piston exterior sets circle ring disk, and valve piston upper surface is bonded with circle ring disk lower surface, circle ring disk and fixed block In be respectively provided with groove, the both ends of back-moving spring are arranged in the groove of circle ring disk and fixed block, described valve element assembly Including armature, spring base, bottom plate, valve element, armature, bottom plate, valve element are arranged while are connected to one by fastening bolt from top to bottom Rising, spring base is located at outside armature and annular groove is formed between armature, dividing plate lower surface setting annular groove, and the two of back-moving spring End is arranged in the annular groove of dividing plate and the annular groove of spring base, and pressure compensation opening is set at armature center, is set on bottom plate Put relief groove, valve element is hollow structure, sets center pressure stabilizing cavity on the valve seat below valve element, the outer end of valve seat sets end Pressure stabilizing cavity, pressure compensation opening, relief groove, the hollow space of valve element and center pressure stabilizing cavity communicate and form inner space, Seal band is set on valve element, and seal band forms air inlet ring cavity, sets outlet annulus and guide pad, guide pad to be located on valve seat Around valve element, outlet annulus is located at below air inlet ring cavity, and venthole is set below outlet annulus, through hole, valve rod are set on dividing plate Middle part pass through through hole, the top of valve rod is connected with circle ring disk, and the lower section of valve rod is fixed together by jump ring and armature；

The fuel anemostat includes tracheae main body, and tracheae main body includes supervisor and branch pipe, is responsible for the circular ring structure for cavity, circle Supervisor's intercommunicating pore is set on ring structure, is main tube hub hole in the middle part of annulus, the front end of branch pipe communicates with the circular ring structure being responsible for, main Pipe is connected and communicated be connected gas hood, and supervisor's centre bore connects free-air diffuser, is responsible for the branch pipe region composition at centre bore rear Combustion gas mixing area, all branch pipes are affixed on the distribution of inlet manifold tube wall surrounding, skewed slot are opened up on the inside of branch pipe；

Venthole connection connection gas hood.

A kind of 2. integrated form ring manifold wall gaseous fuel injection mixing dress with piezo actuator according to claim 1 Put, it is characterized in that：It is wavy shaped configuration above one end of supervisor's connection gas hood, it is frustum cone structure to be responsible at intercommunicating pore.

3. a kind of integrated form ring manifold wall gaseous fuel injection with piezo actuator according to claim 1 or 2 is mixed Attach together and put, it is characterized in that：The end of branch pipe sets semicircle perforate, and the skewed slot on each branch pipe is four, itself and inlet manifold axle The angle of line is respectively 30 °, 30 °, 45 °, 60 °.

4. a kind of integrated form ring manifold wall gaseous fuel injection with piezo actuator according to claim 1 or 2 is mixed Attach together and put, it is characterized in that：Extension is set on valve body, and extension sets air inlet, is set in the valve body below air inlet Diversion cavity, air inlet, diversion cavity communicate and form exterior space, and exterior space communicates with inner space, are set axially on valve element Air admission hole；

Combustion gas vertically flows into diversion cavity through air inlet, and a part of combustion gas is flowed into the center pressure stabilizing cavity of inner space and valve seat, Remaining combustion gas is flowed into above valve element, and a part of combustion gas stream is through axial air admission hole, full of the air inlet ring cavity on valve element, another part combustion Gas is flowed into the end pressure stabilizing cavity of valve seat outer end；

When piezo-electric crystal is not powered on, the upper surface of seal band and valve seat on valve element is fitted close, and combustion gas is full of fuel gas injection The exterior space of the valve inner of valve and inner space；Piezo-electric crystal be powered after, piezo-electric crystal by current excitation so as to extend, Big piston is promoted to move downward, the hydraulic oil in sleeve is compressed, and in the presence of hydraulic fluid pressure, valve piston is transported upwards Dynamic, valve rod also moves upwards, and under the fixation of jump ring, band movable valve plug assembly moves upwards, until the hydraulic pressure in sleeve Oil pressure returns to original state, and valve piston no longer moves, and valve element assembly stops therewith, and combustion gas is by the axial admission hole on valve element Flow into, by air inlet ring cavity, the space between valve element and valve seat, connection gas hood is vertically flowed out into by venthole, it Incoming fuel anemostat afterwards, combustion gas are spread in the circular ring structure of supervisor, then are flowed into each branch pipe, are flowed into the combustion of branch pipe Gas is injected to combustion gas mixing area by each skewed slot, and at the same time air enters combustion from free-air diffuser by supervisor's centre bore Gas mixed zone, in the presence of vortex, combustion gas is mixed with air and is flowed into inlet manifold；After piezo-electric crystal power-off, piezo crystals Body shortens, and in the presence of big piston support spring, big piston returns to initial position, and hydraulic fluid pressure declines in sleeve, multiple In the presence of the spring of position, circle ring disk, valve piston move downward, and valve rod, valve element assembly move downward therewith, until liquid in sleeve Oil pressure returns to original state, and big piston, valve piston return to initial position, and valve element assembly returns to initial position, spool table Face is bonded with valve base surface, and fuel gas injection valve is closed, and gas circuit is closed.

A kind of 5. integrated form ring manifold wall gaseous fuel injection mixing dress with piezo actuator according to claim 3 Put, it is characterized in that：Extension is set on valve body, and extension sets air inlet, and water conservancy diversion is set in the valve body below air inlet Chamber, air inlet, diversion cavity are communicated and form exterior space, and exterior space is communicated with inner space, and axial admission is set on valve element Hole；

Combustion gas vertically flows into diversion cavity through air inlet, and a part of combustion gas is flowed into the center pressure stabilizing cavity of inner space and valve seat, Remaining combustion gas is flowed into above valve element, and a part of combustion gas stream is through axial air admission hole, full of the air inlet ring cavity on valve element, another part combustion Gas is flowed into the end pressure stabilizing cavity of valve seat outer end；

When piezo-electric crystal is not powered on, the upper surface of seal band and valve seat on valve element is fitted close, and combustion gas is full of fuel gas injection The exterior space of the valve inner of valve and inner space；Piezo-electric crystal be powered after, piezo-electric crystal by current excitation so as to extend, Big piston is promoted to move downward, the hydraulic oil in sleeve is compressed, and in the presence of hydraulic fluid pressure, valve piston is transported upwards Dynamic, valve rod also moves upwards, and under the fixation of jump ring, band movable valve plug assembly moves upwards, until the hydraulic pressure in sleeve Oil pressure returns to original state, and valve piston no longer moves, and valve element assembly stops therewith, and combustion gas is by the axial admission hole on valve element Flow into, by air inlet ring cavity, the space between valve element and valve seat, connection gas hood is vertically flowed out into by venthole, it Incoming fuel anemostat afterwards, combustion gas are spread in the circular ring structure of supervisor, then are flowed into each branch pipe, are flowed into the combustion of branch pipe Gas is injected to combustion gas mixing area by each skewed slot, and at the same time air enters combustion from free-air diffuser by supervisor's centre bore Gas mixed zone, in the presence of vortex, combustion gas is mixed with air and is flowed into inlet manifold；After piezo-electric crystal power-off, piezo crystals Body shortens, and in the presence of big piston support spring, big piston returns to initial position, and hydraulic fluid pressure declines in sleeve, multiple In the presence of the spring of position, circle ring disk, valve piston move downward, and valve rod, valve element assembly move downward therewith, until liquid in sleeve Oil pressure returns to original state, and big piston, valve piston return to initial position, and valve element assembly returns to initial position, spool table Face is bonded with valve base surface, and fuel gas injection valve is closed, and gas circuit is closed.