CN107091358A - A kind of block form fuel gas injection valve with floating valve seat - Google Patents
A kind of block form fuel gas injection valve with floating valve seat Download PDFInfo
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- CN107091358A CN107091358A CN201710504558.7A CN201710504558A CN107091358A CN 107091358 A CN107091358 A CN 107091358A CN 201710504558 A CN201710504558 A CN 201710504558A CN 107091358 A CN107091358 A CN 107091358A
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- valve
- valve seat
- valve element
- armature
- electromagnet
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K31/00—Actuating devices; Operating means; Releasing devices
- F16K31/02—Actuating devices; Operating means; Releasing devices electric; magnetic
- F16K31/06—Actuating devices; Operating means; Releasing devices electric; magnetic using a magnet, e.g. diaphragm valves, cutting off by means of a liquid
- F16K31/0644—One-way valve
-
- 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
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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
-
- 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
-
- 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
- F02M21/0269—Outwardly opening valves, e.g. poppet valves
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K31/00—Actuating devices; Operating means; Releasing devices
- F16K31/02—Actuating devices; Operating means; Releasing devices electric; magnetic
- F16K31/06—Actuating devices; Operating means; Releasing devices electric; magnetic using a magnet, e.g. diaphragm valves, cutting off by means of a liquid
- F16K31/0675—Electromagnet aspects, e.g. electric supply therefor
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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)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Combustion & Propulsion (AREA)
- Analytical Chemistry (AREA)
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Magnetically Actuated Valves (AREA)
Abstract
It is an object of the invention to provide a kind of block form fuel gas injection valve with floating valve seat, by way of electromagnet is powered and attracts armature so that valve element assembly is lifted off a seat motion under the interior guide effect of guide finger, realizes the function of gas valve jet；Fuel gas injection process is controlled respectively using two magnetic valves, one magnetic valve works independently, two magnetic valves work simultaneously and a magnetic valve is first acted, acted after one magnetic valve, three kinds of mode of operations such as low discharge jet, big flow jet, variable-flow jet can be achieved, power and seriation engine power demand of the engine under different operating modes is met；By the axially main direct air inlet of air drain and the mixed admission mode of circumferential tonifying Qi gas inlet hole, big flow is realized, the supply efficiency of engine is effectively improved, while air-flow can be avoided to interfere, the stabilization of gas circuit is realized；By valve element and the multiple tracks zonary structure of valve base chamber, the face sealing of fuel gas injection valve, high reliability are realized.
Description
Technical field
The present invention relates to a kind of fuel gas injection valve, specifically natural gas engine gas injection valve.
Background technology
In recent years, the rapid growth consumed with China's oil, oil heavy dependence import.Combustion of natural gas clean and
In China's rich reserves, the fuel of most possible diesel oil substitute is become.In internal combustion engine industry, energy-saving and emission-reduction are used as internal combustion
Machine development inexorable trend, using natural gas as main fuel internal combustion engine ensure dynamic property on the premise of, can significantly drop
Low emission pollution condition, the study hotspot in industry is already turned into using natural gas in recent years for the internal combustion engine of fuel.It is used as day
The fuel supply system of right gas engine, the performance of fuel gas injection valve directly determines the characteristic of natural gas engine.At present,
In the practical work process of fuel gas injection valve, at present, in the practical work process of fuel gas injection valve, in order in preventing
Combustion engine the situation of reverse leakage occurs under operating mode harsh conditions, it is necessary to fuel gas injection valve has anti-reverse leakage function, according to
Power demand of the internal combustion engine under different operating modes, fuel gas injection valve need to meet the wide scope spray air flow need such as low discharge, big flow
Ask, according to the difference of internal-combustion engine rotational speed, response time of fuel gas injection valve it is general at several milliseconds between a few tens of milliseconds, i.e. combustion gas
Injection valve need to possess high response speed to meet the requirement that it is switched rapidly, in addition, spraying combustion gas during fuel gas injection valve work
The characteristics such as the stability of pressure can be impacted to engine performance.Therefore, exploitation has anti-reverse leakage function, flow
The fuel gas injection valve that variable, fast response time, stable gas pressure, control accuracy are high, reliability is high, is current natural gas engine combustion
The trend of gas jet valve development.
The content of the invention
It is an object of the invention to provide with anti-reverse leakage function, variable flow, fast response time, control accuracy
Height, reliability height, stable gas pressure, a kind of efficient sealed block form fuel gas injection valve with floating valve seat.
The object of the present invention is achieved like this：
A kind of block form fuel gas injection valve with floating valve seat of the present invention, it is characterized in that：Including valve body, electromagnet, first
Valve arrangement, the second injection valve arrangement, guide base are sprayed, the first injection valve arrangement includes the first valve element assembly, the first floating
Valve seat, the second injection valve arrangement includes the second valve element assembly, the second floating valve seat, and electromagnet is fixed in valve body, electromagnet
In wind respectively first annular groove and the second annular groove, guide base be set respectively in first coil and the second coil, electromagnet
It is fixed in valve body；
The first valve element assembly include the first armature, the first spring base, the first bottom plate, the first valve element, the first armature,
First bottom plate, the first valve element arrange that the first spring base is located at the first rank while being linked together by fastening bolt from top to bottom
Iron outside simultaneously forms annular groove between the first armature, and the two ends of the first master reset spring are arranged in the first ring of electromagnet
In the annular groove of shape groove and spring base, the first guide finger is installed in the first armature center, and the first guide finger passes through jump ring and first
Armature is fixed together, and the first guide finger is stretched in electromagnet, and the first auxiliary back-moving spring, the first auxiliary reset are set in electromagnet
The two ends of spring contact setting first pressure balance pipe, the first bottom plate in electromagnet and the first guide finger, the first guide finger respectively
Upper setting first pressure compensating groove, the first valve element is hollow structure, first pressure balance pipe, first pressure compensating groove, the first valve
The hollow space of core is communicated, and is set in the hollow space of the first valve element and is set first on the first valve seat back-moving spring, the first valve element
Seal band and the first fin, the first seal band the first ring cavity of formation, the first valve element upper surface open up the first main air drain in axial direction,
The first circumferential tonifying Qi hole is provided with first fin；First floating valve seat includes the first valve seat, and the first valve seat is located at the first valve
Below core, guide base inner ring is provided with the first T-shaped structure and the second T-shaped structure, and the first valve seat outer ring is by setting with being oriented to
The T-shaped structure that the T-shaped structure of pedestal first coordinates is arranged in guide base, and the two ends of the first valve seat back-moving spring are separately fixed at
On first valve seat and the first valve element, the first outlet annulus is set, the first outlet annulus is located at below the first ring cavity on the first valve seat,
First gas outlet is set below the first outlet annulus；
The second valve element assembly include the second armature, second spring seat, the second bottom plate, the second valve element, the second armature,
Second bottom plate, the second valve element arrange that second spring seat is located at the second rank while being linked together by fastening bolt from top to bottom
Iron outside simultaneously forms annular groove between the second armature, and the two ends of the second master reset spring are arranged in the second ring of electromagnet
In the annular groove of shape groove and spring base, the second guide finger is installed in the second armature center, and the second guide finger passes through jump ring and second
Armature is fixed together, and the second guide finger is stretched in electromagnet, and the second auxiliary back-moving spring, the second auxiliary reset are set in electromagnet
The two ends of spring contact setting second pressure balance pipe, the second bottom plate in electromagnet and the second guide finger, the second guide finger respectively
Upper setting second pressure compensating groove, the second valve element is hollow structure, second pressure balance pipe, second pressure compensating groove, the second valve
The hollow space of core is communicated, and is set in the hollow space of the second valve element and is set second on the second valve seat back-moving spring, the second valve element
Seal band and the second fin, the second seal band the second ring cavity of formation, the second valve element upper surface open up the second main air drain in axial direction,
The second circumferential tonifying Qi hole is provided with second fin；Second floating valve seat includes the second valve seat, and the second valve seat is located at the second valve
Below core, the second valve seat outer ring is by setting the T-shaped structure coordinated with the T-shaped structure of guide base second to be arranged on guide base
In, the two ends of the second valve seat back-moving spring are separately fixed on the second valve seat and the second valve element, set second to go out on the second valve seat
Compression ring band, the second outlet annulus is located at below the second ring cavity, and the second gas outlet is set below the second outlet annulus.
The present invention can also include：
The 1st, double anti-gas-leak structure is set between the first valve seat and guide base, and the first weight anti-gas-leak structure is first
Installed above valve seat and guide base junction in the first deformable seal circle, the first deformable seal circle and install first additional along top
Packing washer, the second weight anti-gas-leak structure be the first valve seat and guide base the first T-shaped structure junction set two layers it is close
Sealing rubber ring, the first T-shaped structure junction between the first valve seat and guide base sets the first elastic washer；In the second valve seat
Double anti-gas-leak structure is set in the same way between guide base.
2nd, formed between the top of iron core and valve body and be followed successively by the inlet chamber communicated therewith below air inlet, air inlet, lead
Chamber is flowed, gas is vertically flowed into valve body by air inlet, flowed into along diversion cavity and be full of valve inner；
When the first injection valve arrangement works independently, after first coil is powered, the first armature drives the first valve element to transport upwards
Dynamic to be separated with the first valve base surface, gas circuit is opened, and the first injection valve arrangement is opened, and gas was by the first main air drain in axial direction and first week
Flow into, by the first ring cavity, vertically flowed out by the first gas outlet to the mixed admission mode in tonifying Qi hole；After first coil power-off,
In the presence of the first master reset spring between electromagnet and the first spring base, the first armature drives the first valve element to transport downwards
It is dynamic, until the first spool face is fitted with the first valve base surface, initial position is returned to, gas circuit is closed, and the first injection valve is closed；
When the second injection valve arrangement works independently, after the second coil electricity, the second armature drives the second valve element to transport upwards
Dynamic to be separated with the second valve base surface, gas circuit is opened, and the second injection valve arrangement is opened, and gas is by the second main air drain in axial direction and second week
Flow into, by the second ring cavity, vertically flowed out by the second gas outlet to the mixed admission mode in tonifying Qi hole；After second coil blackout,
In the presence of the second master reset spring between electromagnet and second spring seat, the second armature drives the second valve element to transport downwards
It is dynamic, until the second spool face is fitted with the first valve base surface, initial position is returned to, gas circuit is closed, and the second injection valve is closed；
It is synchronously dynamic according to the mode for working independently same when the first injection valve arrangement and the work of the second injection valve structural union
Make or successively action completes course of injection.
Advantage of the invention is that：The present invention is powered electromagnet by way of attraction armature so that valve element assembly exists
Lifted off a seat under the interior guide effect of guide finger motion, realize the function of gas valve jet；Using the structure with floating valve seat, its
It can effectively prevent fuel gas injection valve from the situation of reverse leakage and the function with damping occur, it is ensured that fuel gas injection valve works
Reliability and safety；Fuel gas injection process is controlled respectively using two magnetic valves, and a magnetic valve works independently, two electricity
Magnet valve works simultaneously and a magnetic valve is first acted, and is acted after a magnetic valve, and low discharge jet, big flow spray can be achieved
Three kinds of mode of operations such as gas, variable-flow jet, meet power and seriation engine power need of the engine under different operating modes
Ask；The present invention is using straight-through plenum system, it is ensured that the sufficient supply of the combustion gas entered in valve body；Ensured by interior guide frame
The perpendicularity of valve element；It is engaged by pressure compensation opening, relief groove, can effectively suppresses gas pressure inside fuel gas injection valve
The fluctuation of power, realizes the steady operation of air-flow, and reliably working realizes high response speed；By the axially main direct air inlet of air drain and
The mixed admission mode of circumferential tonifying Qi gas inlet hole, realizes big flow, effectively improves the supply efficiency of engine, while can keep away
Exempt from air-flow interference, realize the stabilization of gas circuit；By valve element and the multiple tracks zonary structure of valve base chamber, realize that the face of fuel gas injection valve is close
Envelope, high reliability.
Brief description of the drawings
Fig. 1 is structural representation of the invention；
Fig. 2 is the first valve element composite unit structure schematic diagram；
Fig. 3 is the second valve element composite unit structure schematic diagram；
Fig. 4 is the first floating valve seat structural representation；
Fig. 5 is the second floating valve seat structural representation；
Fig. 6 is that gas circuit moves towards schematic diagram；
Fig. 7 is valve element three dimensional structure diagram；
Fig. 8 is the first floating valve seat force analysis figure.
Embodiment
Illustrate below in conjunction with the accompanying drawings and the present invention is described in more detail：
With reference to overall structure signals of the Fig. 1-8, Fig. 1 for a kind of block form fuel gas injection valve with floating valve seat of the present invention
Figure, including the combination of 1 valve body, 2 electromagnet, 3 first coils, 4 first auxiliary back-moving springs, 5 first master reset springs, 6 first valve elements
Body, 7 first floating valve seats, 8 second coils, 9 second auxiliary back-moving springs, 10 second master reset springs, 11 second valve element assemblys,
12 O-ring seals and 13 second floating valve seats.Electromagnet 2, first coil 3, the first master reset spring 5, the first auxiliary back-moving spring 4,
First valve element assembly 6 and the first floating valve seat 7 constitute electromagnetic valve I, electromagnet 2, the second coil 8, the second master reset spring 10,
Second auxiliary back-moving spring 9, the second valve element assembly 11 and the second floating valve seat 13 constitute electromagnetic valve II, electromagnetic valve I and magnetic valve
II structures and mounting means all same, symmetrical in injection apparatus and shared valve body 1, electromagnet 2 and guide base 46.Before
Electromagnet 2 in the electromagnetic valve I stated is linked together by the screw thread above it with valve body 1, it is fixed on the top of valve body 1
Center, first coil 3 is wrapped in the annular groove inside electromagnet 2, has been sequentially arranged from top to bottom below electromagnet 2
One valve element assembly 6, the first floating valve seat 7.
As shown in Fig. 2 a kind of first valve element assembly 6 of the block form fuel gas injection valve with floating valve seat is oriented to by first
Pin 14, the first jump ring 22, the first armature 15, the first spring base 16, the first fastening bolt 25, the first pad 23, the first bottom plate 17
Constituted with the first valve element 18, the first armature 15 is connected to one by the first fastening bolt 25 and the first bottom plate 17, the first valve element 18
Rise, one layer of first pad 23 is disposed between the first armature 15 and the first bottom plate 17, the first spring base 16 is arranged on the first bottom plate
17 top, its internal side surface is in contact with the side surface of the first armature 15, the two ends difference position of the first master reset spring 5
In in the annular groove of the spring base 16 of electromagnet 2 and first, electromagnet 2 is provided with the straight trough of certain depth, the armature of electromagnet 2 and first
The first guide finger 14 between 15 is arranged in inside straight trough, and the center of the first guide finger 14 is provided with first pressure balance pipe 21, first
A number of first pressure compensating groove 24 is provided with bottom plate 17, it is to avoid the first armature 15 is made the first armature 15 by axial force
The inside and outside airline pressure in place is more easy to reach balance, improves the response speed of the first armature 15, the top of the first guide finger 14 and electromagnet 2 it
Between be disposed with the first auxiliary back-moving spring 4, the center of the first armature 15 is arranged in, using the first jump ring 22 by the first guide finger
14 are fixed up with the first armature 15.The first pressure balance pipe 21 of the center of first guide finger 14 coordinates on the first bottom plate 17
First pressure compensating groove 24 causes the inner space of the first valve element assembly 6 to be connected with exterior space, and inside and outside gas circuit reaches balance, the
The inside and outside combustion gas no pressure of one valve element assembly 6 is poor, it is to avoid by extra axial force during from motion, the first valve element 18 by
First valve element main body, the first fin 19 and the first seal band 20 are constituted.The integral arrangement of first valve element assembly 6 is in electromagnet 2
Lower section.
As shown in figure 3, a kind of structure of second valve element assembly 11 of the block form fuel gas injection valve with floating valve seat, with
Fig. 2 is similarly.
As shown in figure 4, a kind of first floating valve seat of the block form fuel gas injection valve with floating valve seat by guide base 46,
First valve seat 48, the first valve seat back-moving spring 44, the first O-ring seal 43, the first packing washer 40, the first deformable seal circle
41st, the first elastic washer 42 is constituted.Guide base 46 is bolted on valve body 1, and the first valve seat 48, which is arranged on, is oriented to base
On seat 46.The inner ring of guide base 46 carries T-shaped structure, is engaged with the T-shaped structure of the outer ring of the first valve seat 48.First valve seat resets
The two ends of spring 44 are separately fixed on the first valve seat 48 and the first valve element 18, and keep certain pretightning force.
In order to prevent gas leakage between the first valve seat 48 and guide base 46, add between the first valve seat 48 and guide base 46
Double anti-gas-leak structure is filled, the first weight anti-gas-leak structure is that is installed above the first valve seat 48 and the junction of guide base 46
The first packing washer 40 is installed additional above edge and outer, pass through first in one deformable seal circle 41, the first deformable seal circle 41
Screw 45 is fixed on the first valve seat 48.First packing washer 40 ensures uniform force, strengthens sealing.First deformable seal
The material of circle 41 uses deformable flexible plastic, it is ensured that it does not influence the motion of the first valve seat 48.Second resealing is first
The T-shaped junction of valve seat 48 and guide base 46 has installed two layers of first O-ring seals 43 additional, further enhances sealing.First
T-shaped junction between valve seat 48 and guide base 46 has installed one layer of first elastic washer 42 additional, reduces vibration punching during contact
Power is hit, the effect of damping is served, the reliability of magnetic valve is effectively increased.
As shown in figure 5, a kind of structure of second floating valve seat 13 of the block form fuel gas injection valve with floating valve seat, with figure
4 similarly.
As shown in fig. 6, first, the inlet chamber 58 that combustion gas is vertically flowed into valve body 1 by air inlet 57 flows along diversion cavity 59
Enter full of inside valve body 1, a portion is flowed into the inside of the first valve element assembly 6 by first pressure compensating groove 24, by first
Pressure compensation opening 21 flows into the top of the first guide finger 14, and the inner space of the first valve element assembly 6 is connected with exterior space,
A part is flowed into the inside of the second valve element assembly 11 by second pressure compensating groove 37, and second is flowed into by second pressure balance pipe 34
The top of guide finger 27, the inner space of the second valve element assembly 11 is connected with exterior space.
Electromagnetic valve I and electromagnetic valve II control fuel gas injection process respectively, and being worked simultaneously with electromagnetic valve I and electromagnetic valve II is
Example, in the fuel gas injection valve course of work, when the coil 8 of first coil 3 and second is not powered on, in the first master reset spring 5 and the
Under the pretightning force effect of one auxiliary back-moving spring 4, the second master reset spring 10 and the second auxiliary back-moving spring 9, the first valve element assembly 6
Remain motionless in initial position with the second valve element assembly 11, the first seal band 20 of the first valve element 18 and the second valve element 31
The lower surface of second seal band 33 respectively with the first outlet annulus 47 of the first floating valve seat 13 and the second floating valve seat 13
The upper surface of second outlet annulus 55 is brought into close contact, and second at the first ring cavity 60 now at the first valve seat 13, the second valve seat 56
Ring cavity 63 is not yet connected with the inner space of valve body 1, the whole space inside valve body 1 of the combustion gas full of fuel gas injection valve.First Line
After the coil 8 of circle 3 and second is powered, electromagnet 2, the first armature 15, the second armature 28 are magnetized, the armature 15 of electromagnet 2 and first,
Magnetic loop is formed between second armature 28, the first armature 15 and the second armature 28 are respectively overcome the first master by the effect of electromagnetic force
Transported upwards after back-moving spring 5, the pretightning force of the first auxiliary master reset spring 10 of back-moving spring 4 and second and the second auxiliary back-moving spring 9
It is dynamic, the first valve element 18, the second valve element 31 upper surface point of motion respectively with the first valve seat 48, the second valve seat 56 upwards are driven respectively
From, until the first spring base 16 and second spring seat 29 upper surface be in contact with the lower surface of electromagnet 2, whole motion process
In, the axial movement of the first armature 15 and the second armature 28 with it is circumferentially positioned by the first guide finger 14, the second guide finger 27 with
Cooperation between electromagnet 2 controlled to realize, now, gas circuit is opened, and magnetic valve is opened, gas is rapidly by the axially main He of air drain 66
Circumferential first tonifying Qi hole 61, the mixed admission mode in the second tonifying Qi hole 64 are flowed into, and pass through multiple tracks the first ring cavity 60, the second ring cavity
63, finally by the first gas outlet 62 and the second vertically outflow of gas outlet 65；The coil 8 of first coil 3 and second is powered off, the first armature
15th, the electromagnetic force that the second armature 28 is subject to disappears, in the first master reset spring 5, the first auxiliary master reset bullet of back-moving spring 4 and second
In the presence of spring 10, the second auxiliary back-moving spring 9, the first armature 15, the second armature 28 are moved downward, and the first valve element is driven respectively
18th, the second valve element 31 is moved downward, until the first valve element 18, the lower surface of the second valve element 31 respectively with the first valve seat 48 and the second valve
The upper surface laminating of seat 56, the first armature 15, the second armature 28 return to initial position, and gas circuit is closed, electromagnetic valve I and magnetic valve
II is closed.
As shown in figure 8, a kind of first floating valve seat force analysis of the block form fuel gas injection valve with floating valve seat, first
Valve seat 48 is by gaseous-pressure inside the elastic force F4 of the first valve seat back-moving spring 44, magnetic valve the external gas pressure F1 and F2, magnetic valve
F3 and the thrust of the first valve element 18 effect.First valve element 18 is acted on by back-moving spring elastic force.Air pressure is more than below magnetic valve
Magnetic valve air pressure inside, magnetic valve the external gas pressure F1, F2 are respectively acting on the lower section of the first valve seat 48 and the first seal band
At 20, the lower contact area of the first valve seat 48 is much larger than the first seal band 20, therefore, and F1 is much larger than F2, in extraneous gas pressure
Power is expanded to before causing the upward motion of the first valve element 18, and the external gas pressure overcomes the initial tension of spring of back-moving spring, first
Valve seat 48 is moved upwardly together together with the first valve element 18.First valve seat 48 is moved upwardly until the first spring base 16 and electromagnetism iron phase
Contact.Even if now electromagnet is powered, the first valve element 18 can not also be moved upwards, and magnetic valve can not be opened.Magnetic valve is locked.
When magnetic valve inner and outer air pressure recovers normal, the first valve seat 48 is downward in the presence of the first valve seat back-moving spring 44
Move back into original position.If now first coil 3 is powered, the first valve element 18 is still remained stationary as, and magnetic valve is normally-open.Want to close
First coil 3 is powered off when closing magnetic valve, and the first valve element 18 is moved downward in the presence of back-moving spring, closed electromagnetic valve.If
Now first coil 3 is not powered on, and the first valve seat 48 is moved back down to together with the first valve element 18 in the presence of back-moving spring
Original position, magnetic valve is remained turned-off.When wanting opens solenoid valve, first coil 3 is powered, and the first valve element 18 drives in the first armature 15
Lower motion upwards, magnetic valve is normally-open.
From the above-mentioned course of work, a kind of block form fuel gas injection valve with floating valve seat of the present invention passes through electromagnet 2
It is powered and attracts the first armature 15, the mode of the second armature 28 so that the first valve element assembly 6, the second valve element assembly 11 is distinguished
Transported under the interior guide effect of the first guide finger 14 and the second guide finger 27 respectively away from the first valve seat 48, the second valve seat 56
It is dynamic, realize the function of gas valve jet；Using the structure of band the first floating valve seat 7 and the second floating valve seat 13, it can be in spray
Effectively prevent fuel gas injection valve from the situation of reverse leakage and the function with damping occur in the case of penetrating valve inner and outer air pressure exception,
It ensure that the reliability and safety of fuel gas injection valve work；Fuel gas injection process, one are controlled respectively using two magnetic valves
Magnetic valve works independently, and two magnetic valves work simultaneously and a magnetic valve is first acted, and are acted after a magnetic valve, can be achieved
Three kinds of mode of operations such as low discharge jet, big flow jet, variable-flow jet, meet power of the engine under different operating modes and
Seriation engine power demand；The present invention is using straight-through plenum system, it is ensured that the sufficient confession of the combustion gas entered in valve body 1
Give；Ensure the perpendicularity of the first valve element 18, the second valve element 31 by interior guide frame；By being led in the first guide finger 14 and second
Xiang Xiao 27 opens at center first pressure balance pipe 21 and second pressure balance pipe 34 respectively, and in the first bottom plate 17, the second bottom plate 30
On have a number of first pressure compensating groove 24 and second pressure compensating groove 37, it is to avoid the first armature 15, second hold in the mouth
Iron 28 by axial force, make the first armature 15, at the second armature 28 inside and outside airline pressure be more easy to reach balance, improve the first armature
15th, the response speed of the second armature 28；On the first fin 19 of the first valve element 18 and the second valve element 31 the second fin 32
The upper structure for opening multiple the first tonifying Qi of circumference holes 61 and the second tonifying Qi hole 64 respectively, the first valve element 18, the following table of the second valve element 31
Face and the first valve seat 48, the upper surface of the second valve seat 56 have multiple tracks the first ring cavity 60, the second ring cavity 63, increase effectively stream
Logical area, reduces the quality of the first valve element 18 and the second valve element 31, improves reliability；Mended in circumferential first tonifying Qi hole 61, second
The first diversion angle of cone 26 and the second diversion angle of cone 39 of certain angle are set respectively at stomata 64, flow losses, increase stream are reduced
Coefficient of discharge；The present invention using the axially direct air inlet of main air drain 66 and circumferential first tonifying Qi hole 61, the air inlet of the second tonifying Qi hole 64 it is mixed
Intake method is closed, increases charge flow rate coefficient, realizes big flow, be effectively improved the supply efficiency of fuel gas injection valve, simultaneously
Air-flow can be avoided to interfere, realize balancing, stably for gas circuit；First valve element 18, the second valve element 31 and the first valve seat 48, the second valve
Multiple tracks the first seal band 20, the second seal band 33 and the first outlet annulus 47, the knot of the second outlet annulus 55 are used between seat 56
Structure, realizes the face sealing of fuel gas injection valve, voltage stabilizing balance, and wider annulus area can reduce impact, improve reliability.
It can be 2,3,4 etc. to spray valve arrangement number, and valve body structure can be straight-through, bypass or straight-through bypass mixing
Formula structure, valve element can for axial admission, axially plus circumferential mixed admission mode, electromagnetism valve guide structure can be oriented in double, it is double
Mixed form etc. is outwardly directed in outer guiding or interior lead.
Technical scheme：A kind of block form fuel gas injection valve with floating valve seat, it is mainly by valve body, electromagnetism
Iron, first coil, the first master reset spring, the first auxiliary back-moving spring, the first valve element assembly, the first floating valve seat, the second line
Circle, the second master reset spring, the second auxiliary back-moving spring, the second valve element assembly, the second floating valve seat, O-ring seal composition.Electricity
Magnet, first coil, the first master reset spring, the first auxiliary back-moving spring, the first valve element assembly and the first floating valve seat are constituted
Electromagnetic valve I, electromagnet, the second coil, the second master reset spring, the second auxiliary back-moving spring, the second valve element assembly and second are floating
Dynamic valve seat constitutes electromagnetic valve II, electromagnetic valve I and electromagnetic valve II structure and mounting means all same, symmetrical in injection apparatus
And share valve body, electromagnet and guide base.Electromagnet in foregoing electromagnetic valve I is connected by the screw thread above it with valve body
Together, it is made to be fixed on the center above valve body, first coil is wrapped in the annular groove inside electromagnet, in electromagnet
Lower section has been sequentially arranged the first valve element assembly, the first floating valve seat from top to bottom；The first foregoing valve element assembly is by first
Guide finger, the first armature, the first spring base, the first pad, the first bottom plate, the first jump ring, the first fastening bolt and the first valve element
Composition, the first armature is linked together by the first fastening bolt with the first bottom plate, the first valve element, the first armature and the first bottom plate
Between be disposed with one layer of first pad, the first spring base is arranged on the top of the first bottom plate, its internal side surface and the first rank
The side surface of iron is in contact, and the two ends of the first master reset spring are located in the annular groove of electromagnet and the first spring base respectively, electricity
Magnet is provided with the straight trough of certain depth, and the first guide finger between electromagnet and the first armature is arranged in inside straight trough, and first leads
It is provided with to pin center on first pressure balance pipe, the first bottom plate and is provided with a number of first pressure compensating groove, the first guide finger
The first auxiliary back-moving spring is disposed between top and electromagnet, the center of the first armature is arranged in, will using the first jump ring
First guide finger is fixed up with the first armature, and the first valve element is by the first valve element main body, the first fin, the first seal band group
Into the first valve element assembly integral arrangement opens circumferential first tonifying Qi hole below electromagnet on the first fin of the first valve element
And the first diversion angle of cone is set at the first tonifying Qi hole, the first seal band and first are used between the first valve element and the first valve seat
Outlet annulus, face sealing, voltage stabilizing balance, and with wider annulus area；The first foregoing floating valve seat by guide base,
First valve seat, the first valve seat back-moving spring, the first O-ring seal, the first packing washer, the first deformable seal circle, the first elasticity
Packing ring is constituted.Guide base is bolted on valve body, and the first valve seat is arranged on guide base.Guide base inner wrap strip
There is T-shaped structure, be engaged with the T-shaped structure of the first valve seat outer ring.First valve seat back-moving spring two ends are separately fixed at the first valve
On seat and the first valve element, and keep certain pretightning force.Double leakproof is installed additional between the first valve seat and guide base depressed
Structure, the first weight anti-gas-leak structure is that the first deformable seal circle, first are installed above the first valve seat and guide base junction
The first packing washer is installed additional above edge and outer, be fixed on by the first screw on the first valve seat in deformable seal circle.First
The material of deformable seal circle uses deformable flexible plastic, it is ensured that it does not influence the motion of the first valve seat.Second resealing is
Two layers of first O-ring seals have been installed additional in the T-shaped junction of the first valve seat and guide base.
Claims (3)
1. a kind of block form fuel gas injection valve with floating valve seat, it is characterized in that：Including valve body, electromagnet, the first injection valve knot
Structure, the second injection valve arrangement, guide base, the first injection valve arrangement include the first valve element assembly, the first floating valve seat, second
Spraying valve arrangement includes the second valve element assembly, the second floating valve seat, and electromagnet is fixed in valve body, wound respectively in electromagnet
First annular groove and the second annular groove are set respectively in first coil and the second coil, electromagnet, guide base is fixed on valve body
In；
The first valve element assembly includes the first armature, the first spring base, the first bottom plate, the first valve element, the first armature, first
Bottom plate, the first valve element arrange that the first spring base is located at outside the first armature while being linked together by fastening bolt from top to bottom
Portion simultaneously forms annular groove between the first armature, and the two ends of the first master reset spring are arranged in the first annular groove of electromagnet
In the annular groove of spring base, the first guide finger is installed in the first armature center, and the first guide finger passes through jump ring and the first armature
It is fixed together, the first guide finger is stretched in electromagnet, the first auxiliary back-moving spring, the first auxiliary back-moving spring is set in electromagnet
Two ends contact in electromagnet and the first guide finger, the first guide finger and to be set on setting first pressure balance pipe, the first bottom plate respectively
Put first pressure compensating groove, the first valve element is hollow structure, first pressure balance pipe, first pressure compensating groove, the first valve element
Hollow space is communicated, and is set in the hollow space of the first valve element and is set first to seal on the first valve seat back-moving spring, the first valve element
Annulus and the first fin, the first seal band the first ring cavity of formation, the first valve element upper surface open up the first main air drain in axial direction, first
The first circumferential tonifying Qi hole is provided with fin；First floating valve seat includes the first valve seat, and the first valve seat is located under the first valve element
Side, guide base inner ring is provided with the first T-shaped structure and the second T-shaped structure, and the first valve seat outer ring passes through setting and guide base
The T-shaped structure that first T-shaped structure coordinates is arranged in guide base, and the two ends of the first valve seat back-moving spring are separately fixed at first
On valve seat and the first valve element, the first outlet annulus is set, the first outlet annulus is located at below the first ring cavity on the first valve seat, first
First gas outlet is set below outlet annulus；
The second valve element assembly includes the second armature, second spring seat, the second bottom plate, the second valve element, the second armature, second
Bottom plate, the second valve element arrange that second spring seat is located at outside the second armature while being linked together by fastening bolt from top to bottom
Portion simultaneously forms annular groove between the second armature, and the two ends of the second master reset spring are arranged in the second annular groove of electromagnet
In the annular groove of spring base, the second guide finger is installed in the second armature center, and the second guide finger passes through jump ring and the second armature
It is fixed together, the second guide finger is stretched in electromagnet, the second auxiliary back-moving spring, the second auxiliary back-moving spring is set in electromagnet
Two ends contact in electromagnet and the second guide finger, the second guide finger and to be set on setting second pressure balance pipe, the second bottom plate respectively
Put second pressure compensating groove, the second valve element is hollow structure, second pressure balance pipe, second pressure compensating groove, the second valve element
Hollow space is communicated, and is set in the hollow space of the second valve element and is set second to seal on the second valve seat back-moving spring, the second valve element
Annulus and the second fin, the second seal band the second ring cavity of formation, the second valve element upper surface open up the second main air drain in axial direction, second
The second circumferential tonifying Qi hole is provided with fin；Second floating valve seat includes the second valve seat, and the second valve seat is located under the second valve element
Side, the second valve seat outer ring is arranged in guide base by setting the T-shaped structure with the cooperation of the T-shaped structure of guide base second, the
The two ends of two valve seat back-moving springs are separately fixed on the second valve seat and the second valve element, set second to go out compression ring on the second valve seat
Band, the second outlet annulus is located at below the second ring cavity, and the second gas outlet is set below the second outlet annulus.
2. a kind of block form fuel gas injection valve with floating valve seat according to claim 1, it is characterized in that：In the first valve seat
Double anti-gas-leak structure is set between guide base, and the first weight anti-gas-leak structure is in the first valve seat and guide base junction
Top is installed in the first deformable seal circle, the first deformable seal circle installs the first packing washer, the second leakproof again additional along top
Depressed structure is to set two layers of O-ring seal in the first T-shaped structure junction of the first valve seat and guide base, in the first valve seat and
The first T-shaped structure junction between guide base sets the first elastic washer；Between the second valve seat and guide base according to
Same mode sets double anti-gas-leak structure.
3. a kind of block form fuel gas injection valve with floating valve seat according to claim 1 or 2, it is characterized in that：Iron core
Formed between top and valve body below air inlet, air inlet and be followed successively by the inlet chamber communicated therewith, diversion cavity, gas is by air inlet
It is vertical to flow into valve body, flowed into along diversion cavity and be full of valve inner；
When first injection valve arrangement work independently when, first coil be powered after, the first armature drive the first valve element upwards motion with
First valve base surface is separated, and gas circuit is opened, and the first injection valve arrangement is opened, and gas is mended by the first main air drain in axial direction and first are circumferential
The mixed admission mode of stomata is flowed into, and by the first ring cavity, is vertically flowed out by the first gas outlet；After first coil power-off, in electricity
In the presence of the first master reset spring between magnet and the first spring base, the first armature drives the first valve element to move downward, directly
Fitted to the first spool face with the first valve base surface, return to initial position, gas circuit is closed, and the first injection valve is closed；
When the second injection valve arrangement works independently, after the second coil electricity, the second armature drive the second valve element upwards motion with
Second valve base surface is separated, and gas circuit is opened, and the second injection valve arrangement is opened, and gas is mended by the second main air drain in axial direction and second are circumferential
The mixed admission mode of stomata is flowed into, and by the second ring cavity, is vertically flowed out by the second gas outlet；After second coil blackout, in electricity
In the presence of the second master reset spring between magnet and second spring seat, the second armature drives the second valve element to move downward, directly
Fitted to the second spool face with the first valve base surface, return to initial position, gas circuit is closed, and the second injection valve is closed；
When the first injection valve arrangement and the work of the second injection valve structural union, according to the mode synchronization action for working independently same or
Successively action completes course of injection.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710504558.7A CN107091358B (en) | 2017-06-28 | 2017-06-28 | Parallel gas injection valve with floating valve seat |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710504558.7A CN107091358B (en) | 2017-06-28 | 2017-06-28 | Parallel gas injection valve with floating valve seat |
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| CN107091358A true CN107091358A (en) | 2017-08-25 |
| CN107091358B CN107091358B (en) | 2023-07-25 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201710504558.7A Active CN107091358B (en) | 2017-06-28 | 2017-06-28 | Parallel gas injection valve with floating valve seat |
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3320610A1 (en) * | 1983-06-08 | 1984-12-13 | Gerhard Dipl.-Ing. 4630 Bochum Mesenich | Injection valve for internal combustion engines |
| CN105508082A (en) * | 2015-11-27 | 2016-04-20 | 哈尔滨工程大学 | Pressurized leakage-free electromagnetically-controlled gas injection device |
| CN105626316A (en) * | 2016-02-29 | 2016-06-01 | 哈尔滨工程大学 | Combined type pressurizing double-electromagnetic-valve gas injection device |
| DE102015206207A1 (en) * | 2015-04-08 | 2016-10-13 | Robert Bosch Gmbh | gas valve |
| CN106523192A (en) * | 2016-11-28 | 2017-03-22 | 哈尔滨工程大学 | Reverse actuation type natural gas injection device of gas/dual-fuel engine |
| CN206846047U (en) * | 2017-06-28 | 2018-01-05 | 哈尔滨工程大学 | A kind of block form fuel gas injection valve with floating valve seat |
-
2017
- 2017-06-28 CN CN201710504558.7A patent/CN107091358B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3320610A1 (en) * | 1983-06-08 | 1984-12-13 | Gerhard Dipl.-Ing. 4630 Bochum Mesenich | Injection valve for internal combustion engines |
| DE102015206207A1 (en) * | 2015-04-08 | 2016-10-13 | Robert Bosch Gmbh | gas valve |
| CN105508082A (en) * | 2015-11-27 | 2016-04-20 | 哈尔滨工程大学 | Pressurized leakage-free electromagnetically-controlled gas injection device |
| CN105626316A (en) * | 2016-02-29 | 2016-06-01 | 哈尔滨工程大学 | Combined type pressurizing double-electromagnetic-valve gas injection device |
| CN106523192A (en) * | 2016-11-28 | 2017-03-22 | 哈尔滨工程大学 | Reverse actuation type natural gas injection device of gas/dual-fuel engine |
| CN206846047U (en) * | 2017-06-28 | 2018-01-05 | 哈尔滨工程大学 | A kind of block form fuel gas injection valve with floating valve seat |
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| CN107091358B (en) | 2023-07-25 |
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