CN107120214A - A kind of anti-reverse integrated form ring manifold wall gaseous fuel jet mixing device - Google Patents
A kind of anti-reverse integrated form ring manifold wall gaseous fuel jet mixing device Download PDFInfo
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- CN107120214A CN107120214A CN201710504557.2A CN201710504557A CN107120214A CN 107120214 A CN107120214 A CN 107120214A CN 201710504557 A CN201710504557 A CN 201710504557A CN 107120214 A CN107120214 A CN 107120214A
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
- F02M21/00—Apparatus for supplying engines with non-liquid fuels, e.g. gaseous fuels stored in liquid form
- F02M21/02—Apparatus for supplying engines with non-liquid fuels, e.g. gaseous fuels stored in liquid form for gaseous fuels
- F02M21/0218—Details on the gaseous fuel supply system, e.g. tanks, valves, pipes, pumps, rails, injectors or mixers
- F02M21/0248—Injectors
- F02M21/0251—Details of actuators therefor
- F02M21/0254—Electric actuators, e.g. solenoid or piezoelectric
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
- F02M21/00—Apparatus for supplying engines with non-liquid fuels, e.g. gaseous fuels stored in liquid form
- F02M21/02—Apparatus for supplying engines with non-liquid fuels, e.g. gaseous fuels stored in liquid form for gaseous fuels
- F02M21/0218—Details on the gaseous fuel supply system, e.g. tanks, valves, pipes, pumps, rails, injectors or mixers
- F02M21/0248—Injectors
- F02M21/0257—Details of the valve closing elements, e.g. valve seats, stems or arrangement of flow passages
- F02M21/026—Lift valves, i.e. stem operated valves
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
- F02M21/00—Apparatus for supplying engines with non-liquid fuels, e.g. gaseous fuels stored in liquid form
- F02M21/02—Apparatus for supplying engines with non-liquid fuels, e.g. gaseous fuels stored in liquid form for gaseous fuels
- F02M21/0218—Details on the gaseous fuel supply system, e.g. tanks, valves, pipes, pumps, rails, injectors or mixers
- F02M21/0248—Injectors
- F02M21/0278—Port fuel injectors for single or multipoint injection into the air intake system
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
- F02M21/00—Apparatus for supplying engines with non-liquid fuels, e.g. gaseous fuels stored in liquid form
- F02M21/02—Apparatus for supplying engines with non-liquid fuels, e.g. gaseous fuels stored in liquid form for gaseous fuels
- F02M21/04—Gas-air mixing apparatus
- F02M21/042—Mixer comprising a plurality of bores or flow passages
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/10—Internal combustion engine [ICE] based vehicles
- Y02T10/30—Use of alternative fuels, e.g. biofuels
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Analytical Chemistry (AREA)
- Fuel-Injection Apparatus (AREA)
- Magnetically Actuated Valves (AREA)
Abstract
It is an object of the invention to provide a kind of anti-reverse integrated form ring manifold wall gaseous fuel jet mixing device, gaseous fuel is transported to the present apparatus by the road, first passes through fuel gas injection valve, and actuator realizes the control being opened and closed to valve by the control to valve element；By floating valve seat structure, realization is avoided due to the uneven caused reverse leakage function of fuel gas injection valve external and internal pressure, it is ensured that the reliability of fuel gas injection valve work；Air inlet and water conservancy diversion process are realized by bypass structure and water conservancy diversion cavity configuration；And then realize air injection function；By the cavity structure of fuel anemostat, allow the fuel to be distributed in whole device, realize the continuity and response of feeder supply；By branch pipe flume structure, make the gaseous fuel formation vortex of ejection, promote the mixability of fuel and air, be conducive to burning, improve device service behaviour.
Description
Technical field
The present invention relates to a kind of fuel injection mixing arrangement, the specifically combustion of natural gas engine gas system
Expect jet mixing device.
Background technology
Problem of environmental pollution is increasingly serious, and discharge index requires increasingly strict, demand of the in the market to high-power gas machine
Constantly increase.The use of adjoint large-scale gas engine, a whole set of gas handling system, including from fuel gas injection valve to air inlet discrimination
Pipe arrives many parts such as air valve cylinder again, performance of each part flowed through of fuel and air to gas engine among this
Have great significance, in the case where engine operating condition is severe, the situation of reverse leakage easily occurs in injection valve, at the same time
Big injection flow, high ejection efficiency and stabilization can be had and have good response characteristic concurrently by also needing to jet mixing device.
Accordingly, it would be desirable to design a kind of integrated form fuel gas injection mixing arrangement with anti-reverse leakage function, its negotiability is set to expire
Sufficient natural gas engine normal work demand at high load conditions.
The content of the invention
It is an object of the invention to provide fast response time, fuel gas injection it is stable, highly reliable, with anti-reverse leakage work(
A kind of anti-reverse integrated form ring manifold wall gaseous fuel jet mixing device of energy.
The object of the present invention is achieved like this：
A kind of anti-reverse integrated form ring manifold wall gaseous fuel jet mixing device of the present invention, it is characterized in that：Including
Fuel gas injection valve, connection gas hood, fuel anemostat；
The fuel gas injection valve includes valve body, electromagnetic actuator, valve element assembly, floating valve seat, the electromagnetic actuator
Including iron core, iron core is fixed in wound around coil in valve body upper end, iron core, iron core and sets annular groove；The valve element assembly bag
Armature, spring base, bottom plate, valve element are included, armature, bottom plate, valve element are arranged from top to bottom to be linked together by fastening bolt simultaneously,
Spring base is located at outside armature and annular groove is formed between armature, and the two ends of back-moving spring are arranged in the annular groove of iron core
In the annular groove of spring base, armature center sets and relief groove is set on pressure compensation opening, bottom plate, and valve element is hollow knot
Structure, pressure compensation opening, relief groove, the hollow space of valve element are communicated, and valve seat back-moving spring is set in the hollow space of valve element,
Seal band and rib are set on valve element, and seal band formation ring cavity, valve element upper surface opens up and is provided with circumference on axially main air drain, rib
Tonifying Qi hole, and the setting diversion angle of cone at tonifying Qi hole；The floating valve seat includes guide base, valve seat, and guide base is fixed on
The lower section of valve body, valve seat is located at below valve element, and guide base inner ring is provided with T-shaped structure, and valve seat outer ring is matched somebody with somebody by setting with it
The T-shaped structure of conjunction is arranged in guide base, and the two ends of valve seat back-moving spring are separately fixed on valve seat and armature, are set on valve seat
Outlet annulus and guide pad are put, guide pad is located at around valve element, and outlet annulus is located at below ring cavity, is set out below outlet annulus
Gas port；
The fuel anemostat includes tracheae main body, and tracheae main body includes supervisor and branch pipe, is responsible for the annulus knot for cavity
Set on structure, circular ring structure in the middle part of supervisor's intercommunicating pore, annulus is main tube hub hole, the front end of branch pipe and the circular ring structure phase being responsible for
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 constituted, all branch pipes are affixed on the inside of the distribution of inlet manifold tube wall surrounding, branch pipe and open up skewed slot；
Gas outlet connection connection gas hood.
The present invention can also include：
The 1st, double anti-gas-leak structure is set between valve seat and guide base, and the first heavy anti-gas-leak structure is in valve seat and led
Installed above to pedestal junction in deformable seal circle, deformable seal circle and install packing washer, the second leakproof again additional along top
Depressed structure is to set two layers of O-ring seal in the T-shaped structure junction of valve seat and guide base, between valve seat and guide base
T-shaped structure junction set elastic washer.
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 °.
3rd, air inlet is formed between the top of iron core and valve body, diversion cavity is formed between the middle and lower part of iron core and valve body, enters
Gas port, diversion cavity are communicated；Gas is vertically flowed into valve body by air inlet, is flowed into along diversion cavity and is full of valve inner, and coil leads to
After electricity, motion is separated armature band movable valve plug with valve base surface upwards, and gas circuit is opened, and magnetic valve is opened, and gas is by axially main air drain
Flowed into the mixed admission mode in circumferential tonifying Qi hole, by ring cavity, connection gas hood vertically flowed out into by gas outlet, it is laggard
Enter fuel anemostat, combustion gas is spread in the circular ring structure of supervisor, then is flowed into each branch pipe, the combustion gas for being flowed into branch pipe is led to
Cross each skewed slot and be injected to combustion gas mixing area, at the same time air enters combustion gas by supervisor's centre bore from free-air diffuser and mixed
Area is closed, in the presence of vortex, combustion gas is mixed with air and is flowed into inlet manifold；After coil blackout, in iron core and spring base
Between back-moving spring in the presence of, armature is moved downward, and band movable valve plug is moved downward, until spool face and valve base surface are pasted
Close, return to initial position, gas circuit is closed, closed electromagnetic valve.
Advantage of the invention is that：The present invention uses the structure with floating valve seat, and it can effectively prevent fuel gas injection valve
There is the situation of reverse leakage and the function with damping, it is ensured that the reliability and safety of fuel gas injection valve work；This hair
It is bright by opening pressure compensation opening at armature center and a number of relief groove being provided with bottom plate, it is to avoid armature is by axle
Xiang Li, makes airline pressure inside and outside at armature be more easy to reach balance, improves armature response speed；The present invention passes through at four of valve element
Circumferential tonifying Qi hole is opened on rib, increases circulation area, valve element quality is reduced, reliability is improved.Set at the circumferential tonifying Qi hole of valve element
The outlet annulus of certain angle, reduces flow losses, increases discharge coefficient.The present invention is using the axially main direct air inlet of air drain and week
To the mixed admission mode of tonifying Qi gas inlet hole, gaseous fuel is by fuel gas injection valve outlet through connecting the spray of gas hood incoming fuel anemostat
Inlet manifold is injected, so as to realize the function of combustion gas mixing.The structure of large radius of curvature is used at connection gas hood, point is reduced
Air current flow pitot loss caused by sharp angular structures, further increase charge flow rate coefficient, increases air inflow, while fuel expands
Separate tube is close to inlet manifold wall cloth and put, and the wall boundary layer of air flow is destroyed in fuel gas injection, air flow is enhanced
Tubulence energy, be effectively improved the supply efficiency of engine.
Brief description of the drawings
Fig. 1 is structural representation of the invention；
Fig. 2 is fuel gas injection valve general structure schematic diagram；
Fig. 3 is valve element assembly schematic diagram；
Fig. 4 is floating valve seat schematic enlarged-scale view；
Fig. 5 is floating valve seat force diagram；
Fig. 6 is fuel anemostat front view；
Fig. 7 moves towards figure for the air-flow of the present invention.
Embodiment
Illustrate below in conjunction with the accompanying drawings and the present invention is described in more detail：
It is a kind of anti-reverse integrated form ring manifold wall gaseous fuel jet mixing device of the present invention with reference to Fig. 1-7, Fig. 1
Overall structure diagram, including fuel gas injection valve 1, connection gas hood 2,3 three parts of fuel anemostat.
Shown in Fig. 2 for a kind of fuel gas injection of anti-reverse integrated form ring manifold wall gaseous fuel jet mixing device
Valve arrangement schematic diagram, including valve body 4, electromagnet 5, valve element assembly 6, floating valve seat 7 four are most of.Electromagnet 5 passes through top
Screw thread links together with valve body 4.Electromagnet 5 is mainly made up of iron core 8, coil 9.The both sides of iron core 8 are provided with arrangement back-moving spring
10 annular groove.
Valve element assembly 6 shown in Fig. 3 is main by armature 11, spring base 13, fastening bolt 17, pad 15, bottom plate 16, valve
Core 18 is constituted.It is characterized in that：Armature 11, pad 15, bottom plate 16 and valve element 18 are linked together by fastening bolt 17, spring base
13 are arranged on bottom plate 16.It is provided with armature 11 on pressure compensation opening 12, bottom plate 16 and is provided with a number of relief groove 14,
Armature 11 is avoided by axial force, makes airline pressure inside and outside at armature 11 be more easy to reach balance, improves the response speed of armature 11；It is multiple
Position spring 10 is located between iron core 8 and spring base 13.After coil 9 is powered, iron core 8, armature 11 are magnetized, iron core 8 and armature 11
Between form magnetic loop, armature 11 is moved upwards after the pretightning force for overcoming back-moving spring 10 is acted on by electromagnetic force, whole fortune
During dynamic, matching somebody with somebody between the axial movement of armature 11 and circumferentially positioned 4 guide pads 25 and valve element 18 by valve seat 27
Close to control to realize, until the upper surface of spring base 13 is in contact with the lower surface of iron core 8, armature 11 maintains one section in the position
After time, coil 9 is powered off, and the electromagnetic force that armature 11 is subject to disappears, the work of the back-moving spring 10 between iron core 8 and spring base 13
Under, armature 11 is moved downward, until armature 11 comes back to initial position.2 are opened respectively on four ribs 19 of valve element 18
Circumferential tonifying Qi hole 20, improves response speed, increases circulation area, while can also reduce quality, improves reliability.In circumferential tonifying Qi
The outlet annulus 24 of certain angle is set at hole 20, flow losses are reduced, increases discharge coefficient.Directly entered using axially main air drain
Gas and the mixed admission mode of the circumferential air inlet of tonifying Qi hole 20, increase charge flow rate coefficient, increase air inflow, while gas can be avoided
Drain off and relate to, gas circuit is reached balance.Outlet annulus 24 is used between valve element 18 and valve seat 27, face sealing, voltage stabilizing is balanced, and wider
Annulus area can reduce impact, improve reliability.
As shown in fig. 6, a kind of fuel anemostat of anti-reverse integrated form ring manifold wall gas fuel injection apparatus by
Main tube part, manifold portion and outlet skewed slot composition.Main tube part 34 is closely coupled with being connected gas hood 2, another side and branch pipe portion
Points 35 connections, manifold portion 35 is close on inlet manifold wall journey circumferentially, in manifold portion 35 to manifold center side
On tube wall, be provided with a series of outlet skewed slots 36, in the present embodiment, the axial angle of outlet skewed slot and manifold is respectively 30 °, 30 °,
45°、60°。
As shown in fig. 7, gas is vertically flowed into valve body 4 by air inlet 37, flowed into along diversion cavity 38 full of in valve body 4
Portion, after coil 9 is powered, armature 11 is moved upwards after the pretightning force for overcoming back-moving spring 10 is acted on by electromagnetic force, drives valve
Motion is separated core 18 with the surface of valve seat 27 upwards, and now, gas circuit is opened, and magnetic valve is opened, and gas is by axially main air drain and circumference
The mixed admission mode in tonifying Qi hole 20 is flowed into, and by the ring cavity 22 of the crisscross distribution of multiple tracks, is finally vertically flowed out by gas outlet 39, stream
The combustion gas gone out is flowed into fuel anemostat 3 via connection gas hood 2, and gaseous fuel spreads in the circular ring structure of supervisor 34, then flows
Enter in each branch pipe 35, the gaseous fuel for being flowed into branch pipe 35 is injected to combustion gas mixing area by each skewed slot 36, same with this
When fresh air from free-air diffuser by supervisor centre bore enter combustion gas mixing area, because branch pipe is distributed in air inlet discrimination
The position of pipe, destroys the boundary layer of air of manifold wall formation, increases the tubulence energy of air flow, additionally due to oblique on branch pipe
Groove 36 takes the angle design of gradual change, therefore gaseous fuel can produce vortex when being injected to mixed zone, in the presence of vortex,
Fuel can be carried out sufficiently mixing and is flowed into again in cylinder with air；Coil 9 is powered off, and the electromagnetic force that armature 11 is subject to disappears,
In the presence of back-moving spring between iron core and spring base 13, armature 11 is moved downward, and band movable valve plug 18 is moved downward, until
The surface of valve element 18 is fitted with the surface of valve seat 27, returns to initial position, and gas circuit is closed, closed electromagnetic valve.
As shown in figure 4, in order to prevent combustion gas reverse leakage, improving the reliability and security of fuel gas injection valve, the present invention
Employ the structure of floating valve seat 7.Floating valve seat 7 can be locked by magnetic valve when magnetic valve external pressure height is with air pressure inside,
It effectively prevent the reverse leakage of combustion gas.Floating valve seat 7 is made up of 7 parts：Guide base 26, valve seat 27 and valve seat reset
Spring 33, O-ring seal 29, packing washer 31, deformable seal circle 32, elastic washer 28.Guide base 26 is bolted
On valve body 4, valve seat 27 is arranged on guide base 26.The inner ring of guide base 26 carries T-shaped structure, the T with the outer ring of valve seat 27
Shape structure is engaged.The two ends of valve seat back-moving spring 33 are separately fixed on valve seat 27 and valve element 18, and keep certain pretightning force.
In order to prevent gas leakage between valve seat 27 and guide base 26, install double additional between valve seat 27 and guide base 26
Anti-gas-leak structure, the first weight anti-gas-leak structure is the installation deformable seal circle above valve seat 27 and the junction of guide base 26
32, the outer of deformable seal circle 32 is pressed in the mounting groove on guide base 26 and valve body 4, passes through guide base 26 and valve body
Bolt pretightening between 4 is fixed.Packing washer 34 is installed additional along top, valve seat is fixed on by screw 30 in deformable seal circle 32
On 27, packing washer 31 ensures uniform force, strengthens sealing.The material of deformable seal circle 32 uses deformable soft modeling
Material, it is ensured that it does not influence the motion of valve seat 27.Second resealing is installed additional in the T-shaped junction of valve seat 27 and guide base 26
Two layers of O-ring seal 29, further enhances sealing.T-shaped junction between valve seat 27 and guide base 26 has installed one layer additional
Elastic washer 28, reduces vibratory impulse power during contact, serves the effect of damping.Effectively increase the reliable of magnetic valve
Property.
Valve seat 27 is by combustion gas inside the elastic force F4 of valve seat back-moving spring 33, magnetic valve the external gas pressure F1 and F2, magnetic valve
Pressure F3 and the thrust of valve element 18 effect.Valve element 18 is acted on by back-moving spring elastic force.Air pressure is more than electromagnetism below magnetic valve
Valve air pressure inside, magnetic valve the external gas pressure F1, F2 are respectively acting at the lower section of valve seat 27 and outlet annulus 24, under valve seat 27
Square contact area is much larger than outlet annulus 24, therefore, and F1 is much larger than F2, and being expanded in the external gas pressure causes valve element 18 upward
Before motion, the external gas pressure F1, F2 overcome the initial tension of spring of back-moving spring 10, and valve seat 27 is upward together with valve element 18
Motion.Valve seat 27 is moved upwardly until that spring base 17 is in contact with electromagnet.Even if now electromagnet is powered, valve element 15 can not yet
Motion upwards, magnetic valve can not be opened.Magnetic valve is locked.
When magnetic valve inner and outer air pressure recovers normal, valve seat 27 is moved back down in the presence of valve seat back-moving spring 33
It is in situ.If now electromagnet is powered, valve element 18 is still remained stationary as, and magnetic valve is normally-open.Electromagnetism when wanting to close magnetic valve
Iron is powered off, and valve element 18 is moved downward in the presence of back-moving spring, closed electromagnetic valve.If now electromagnet is not powered on, valve seat
27 move back down to original position together with valve element 18 in the presence of back-moving spring 10, and magnetic valve is remained turned-off.Want to open electricity
During magnet valve, electromagnet is powered, and valve element 18 is moved upwards under armature drive, and magnetic valve is normally-open.
From the above-mentioned course of work, outer guiding fuel gas injection valve of the through type of the present invention with floating valve seat 7 uses band floating
The structure of dynamic valve seat 7, it can effectively prevent fuel gas injection valve from occurring reversely letting out in the case of injection valve inner and outer air pressure exception
The situation of leakage and the function with damping, it is ensured that the reliability and safety of fuel gas injection valve work；Meanwhile, the present invention is when combustion
When material injection stops, flowing of the fuel in fuel anemostat 3 also just basic stopping, fuel is just stored in gas hood 2, supervisor 34
In each branch pipe 35.Until during next induction stroke, fuel gas injection valve 1 and cylinder valve are opened, gas hood 2, supervisor are stored in
34th, the fuel in branch pipe 35 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 response of whole inlet duct supply.
Technical scheme：A kind of anti-reverse integrated form ring manifold wall gaseous fuel jet mixing device, dress
Put and be divided into fuel gas injection valve, connection gas hood and fuel anemostat.Wherein fuel gas injection valve by valve body, electromagnet, valve element assembly,
Floating valve seat four is most of to be constituted.Electromagnet is linked together by square thread thereon and valve body.Electromagnet is main by iron core, line
Circle composition.Iron core both sides are provided with the annular groove of arrangement back-moving spring.Valve element assembly it is main by armature, spring base, fastening bolt,
Pad, bottom plate, valve element composition.It is characterized in that：Armature, pad, bottom plate and valve element are linked together by fastening bolt, spring base
It is provided with bottom plate, on bottom plate on a number of relief groove, armature and carries pressure compensation opening.Back-moving spring is located at
Between iron core and spring base.Open a circumferential tonifying Qi hole respectively on four ribs of valve element.Valve element and valve base chamber use three road outlets
Annulus, face sealing, voltage stabilizing balance, and with wider annulus area.Circumferentially fixed 4 guide pads on valve seat of valve element
On, it is ensured that its perpendicularity, valve element moves up and down spacing by the progress of the distance between spring base and iron core.Floating valve seat is by guiding base
Seat, valve seat and valve seat back-moving spring, O-ring seal, packing washer, deformable seal circle, elastic washer composition.Guide base leads to
Cross and be bolted on valve body, valve seat is arranged on guide base.Guide base inner ring carries T-shaped structure, the T with valve seat outer ring
Shape structure is engaged.Valve seat back-moving spring two ends are separately fixed on valve seat and valve element, and keep certain pretightning force.In valve seat
Double anti-gas-leak structure is installed additional between guide base, the first heavy anti-gas-leak structure is on valve seat and guide base junction
Deformable seal circle is installed by side, and deformable seal circle outer is pressed in the mounting groove on guide base and valve body, by being oriented to
Bolt pretightening between pedestal and valve body is fixed.Packing washer is installed additional along top, be screwed in deformable seal circle
On valve seat.The material of deformable seal circle uses deformable flexible plastic, it is ensured that it does not influence the motion of valve seat.Second resealing
It is to have installed two layers of O-ring seal additional in the T-shaped junction of valve seat and guide base.
Fuel gas injection valve outlet is closely connected with being connected gas hood, and the connection gas hood other end is then close with fuel anemostat
Connection, fuel sprays from fuel gas injection valve, through connecting inside gas hood incoming fuel anemostat.Fuel anemostat includes supervisor and branch
Pipe, be responsible for for one connection gas hood toroidal cavity structure, one end is connected through a screw thread with being connected gas hood；Connect in the opposite side of supervisor
Then some branch pipes, branch pipe is close to inlet manifold inwall circumferentially, opens up what a series of angles were not waited on branch pipe madial wall
Skewed slot, and angle of bevel gradual change, gaseous fuel are flowed into inlet manifold by these skewed slots and mixed with air.
Claims (5)
1. a kind of anti-reverse integrated form ring manifold wall gaseous fuel jet mixing device, it is characterized in that：Including fuel gas injection
Valve, connection gas hood, fuel anemostat；
The fuel gas injection valve includes valve body, electromagnetic actuator, valve element assembly, floating valve seat, and the electromagnetic actuator includes
Iron core, iron core is fixed in wound around coil in valve body upper end, iron core, iron core and sets annular groove；The valve element assembly includes rank
Iron, spring base, bottom plate, valve element, armature, bottom plate, valve element are arranged from top to bottom to be linked together by fastening bolt simultaneously, spring
Seat is located at outside armature and annular groove is formed between armature, and the two ends of back-moving spring are arranged in the annular groove and bullet of iron core
In the annular groove of spring abutment, armature center sets and sets relief groove on pressure compensation opening, bottom plate, and valve element is hollow structure,
Pressure compensation opening, relief groove, the hollow space of valve element are communicated, and valve seat back-moving spring, valve are set in the hollow space of valve element
Seal band and rib are set on core, and seal band formation ring cavity, valve element upper surface opens up and is provided with circumferential benefit on axially main air drain, rib
Stomata, and the setting diversion angle of cone at tonifying Qi hole；The floating valve seat includes guide base, valve seat, and guide base is fixed on valve
The lower section of body, valve seat is located at below valve element, and guide base inner ring is provided with T-shaped structure, and valve seat outer ring is coordinated by setting with it
T-shaped structure be arranged on guide base in, the two ends of valve seat back-moving spring are separately fixed on valve seat and armature, on valve seat set
Outlet annulus and guide pad, guide pad are located at around valve element, and outlet annulus is located at below ring cavity, and outlet is set below outlet annulus
Mouthful；
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
It is main tube hub hole to be set on ring structure in the middle part of supervisor's intercommunicating pore, annulus, and the front end of branch pipe is communicated 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 inside of the distribution of inlet manifold tube wall surrounding, branch pipe and open up skewed slot；
Gas outlet connection connection gas hood.
2. a kind of anti-reverse integrated form ring manifold wall gaseous fuel jet mixing device according to claim 1, its
It is characterized in：Double anti-gas-leak structure is set between valve seat and guide base, and the first heavy anti-gas-leak structure is in valve seat and guiding
Installed above pedestal junction in deformable seal circle, deformable seal circle and install packing washer, the second heavy anti-gas-leak additional along top
Structure is to set two layers of O-ring seal, the T between valve seat and guide base in the T-shaped structure junction of valve seat and guide base
Shape structural attachments set elastic washer.
3. a kind of anti-reverse integrated form ring manifold wall gaseous fuel jet mixing device according to claim 1 or 2,
It is characterized in that：The end of branch pipe sets the skewed slot on semicircle perforate, each branch pipe to be four, its angle with inlet manifold axis
Respectively 30 °, 30 °, 45 °, 60 °.
4. a kind of anti-reverse integrated form ring manifold wall gaseous fuel jet mixing device according to claim 1 or 2,
It is characterized in that：Air inlet is formed between the top of iron core and valve body, diversion cavity, air inlet are formed between the middle and lower part of iron core and valve body
Mouth, diversion cavity are communicated；Gas is vertically flowed into valve body by air inlet, is flowed into along diversion cavity and is full of valve inner, coil electricity
Afterwards, motion is separated armature band movable valve plug with valve base surface upwards, and gas circuit is opened, and magnetic valve is opened, gas by axially main air drain with
The mixed admission mode in circumferential tonifying Qi hole is flowed into, and by ring cavity, connection gas hood is vertically flowed out into by gas outlet, is entered afterwards
Fuel anemostat, combustion gas is spread in the circular ring structure of supervisor, then is flowed into each branch pipe, and the combustion gas for being flowed into branch pipe passes through
Each skewed slot is injected to combustion gas mixing area, and at the same time air enters combustion gas mixing from free-air diffuser by supervisor's centre bore
Area, in the presence of vortex, combustion gas is mixed with air and is flowed into inlet manifold；After coil blackout, iron core and spring base it
Between back-moving spring in the presence of, armature is moved downward, and band movable valve plug is moved downward, until spool face and valve base surface are pasted
Close, return to initial position, gas circuit is closed, closed electromagnetic valve.
5. a kind of anti-reverse integrated form ring manifold wall gaseous fuel jet mixing device according to claim 3, its
It is characterized in：Air inlet is formed between the top of iron core and valve body, diversion cavity, air inlet are formed between the middle and lower part of iron core and valve body
Mouth, diversion cavity are communicated；Gas is vertically flowed into valve body by air inlet, is flowed into along diversion cavity and is full of valve inner, coil electricity
Afterwards, motion is separated armature band movable valve plug with valve base surface upwards, and gas circuit is opened, and magnetic valve is opened, gas by axially main air drain with
The mixed admission mode in circumferential tonifying Qi hole is flowed into, and by ring cavity, connection gas hood is vertically flowed out into by gas outlet, is entered afterwards
Fuel anemostat, combustion gas is spread in the circular ring structure of supervisor, then is flowed into each branch pipe, and the combustion gas for being flowed into branch pipe passes through
Each skewed slot is injected to combustion gas mixing area, and at the same time air enters combustion gas mixing from free-air diffuser by supervisor's centre bore
Area, in the presence of vortex, combustion gas is mixed with air and is flowed into inlet manifold；After coil blackout, iron core and spring base it
Between back-moving spring in the presence of, armature is moved downward, and band movable valve plug is moved downward, until spool face and valve base surface are pasted
Close, return to initial position, gas circuit is closed, closed electromagnetic valve.
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| CN201710504557.2A CN107120214B (en) | 2017-06-28 | 2017-06-28 | Reverse-preventing integrated annular manifold wall surface gas fuel injection mixing device |
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| CN116576042A (en) * | 2023-04-18 | 2023-08-11 | 江苏普瑞亚动力科技有限公司 | Gaseous ammonia fuel injection system for high-power engine |
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| CN107120214B (en) | 2023-07-25 |
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