CN206816393U - Fuel gas injection valve is oriented to outside a kind of piezoelectric type of through type with floating valve seat - Google Patents
Fuel gas injection valve is oriented to outside a kind of piezoelectric type of through type with floating valve seat Download PDFInfo
- Publication number
- CN206816393U CN206816393U CN201720760724.5U CN201720760724U CN206816393U CN 206816393 U CN206816393 U CN 206816393U CN 201720760724 U CN201720760724 U CN 201720760724U CN 206816393 U CN206816393 U CN 206816393U
- Authority
- CN
- China
- Prior art keywords
- valve
- valve seat
- gas
- valve element
- armature
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Withdrawn - After Issue
Links
Classifications
-
- 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
Landscapes
- Fuel-Injection Apparatus (AREA)
- Electrically Driven Valve-Operating Means (AREA)
Abstract
The purpose of this utility model, which is to provide outside a kind of piezoelectric type of through type with floating valve seat, is oriented to fuel gas injection valve, pass through floating valve seat structure, realization avoids, due to reverse leakage function caused by fuel gas injection valve external and internal pressure imbalance, ensure 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；The control of valve element is realized by the control of piezo actuator, the control of gas circuit, realizes air injection function；It is engaged by outer guide frame with pressure compensation opening, relief groove, ensures the perpendicularity of valve element, realize the steady operation of air-flow, reliably working, realize high response speed；By the axially mixed admission mode of the main direct air inlet of air drain and circumferential tonifying Qi gas inlet hole, big flow is realized, effectively improves the supply efficiency of engine, while air-flow can be avoided to interfere, realize the stabilization of gas circuit；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 utility model relates to the combustion gas of a kind of fuel gas injection valve, specifically natural gas engine gas system
Injection valve.
Background technology
Problem of environmental pollution getting worse, discharge index require increasingly strict, demand of the in the market to high-power gas machine
Constantly increase.With the use of large-scale gas engine, manufacture, the maintenance and repair of key components and parts, which turn into, restricts gas
An important factor for development of engine, fuel gas injection valve are exactly such a key components and parts.Fuel gas injection valve is gaseous fuel electricity
One of kernel component of multi-point injection gas machine machine containing double fuel is controlled, each cylinder can be achieved and supply and enter qi leel by stages at regular time and quantity
Layer, its service behaviour have highly important influence to the dynamic property of gas machine or dual fuel engine, emission performance.Injection valve needs
Will under the bad working environments such as HTHP cumulative activation thousands of hours, and dismantle etc. maintenance work error can be caused progressively to accumulate,
Finally injection valve is caused to be difficult to debug.
In the case where engine operating condition is severe, easily there is the situation of reverse leakage in injection valve.Meanwhile in order to realize more
Flexible gas puff Z-pinch.Therefore, it is necessary to design a kind of injection valve with anti-reverse leakage function and variable lift.Meanwhile need
Want that Development response speed is fast, control accuracy is high, the big flow fuel gas injection valve of good reliability, its negotiability is met naturally
Gas engine normal work demand at high load conditions.
The content of the invention
The purpose of this utility model be to provide fast response time, fuel gas injection it is stable, it is highly reliable, there is anti-reverse let out
Leak and be oriented to fuel gas injection valve outside a kind of piezoelectric type of through type with floating valve seat of function.
What the purpose of this utility model was realized in：
Fuel gas injection valve is oriented to outside a kind of piezoelectric type of the through type of the utility model with floating valve seat, it is characterized in that：Including
Valve body, floating valve seat, valve rod, piezo-electric crystal, fluid power amplifier, dividing plate, valve element assembly, the inner upper of valve body are fixed with
Determine block, straight trough is provided with the middle part of fixed block, piezo-electric crystal is arranged in straight trough, and dividing plate is set in the middle part of valve body, liquid is set above dividing plate
Power amplifier, dividing plate lower section set valve element assembly, and the fluid power amplifier includes big piston, valve piston, sleeve, and sleeve is set
On dividing plate, 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 is arranged in thin outlet, sets big piston support spring between the flange and sleeve of big piston, the flange of valve piston with
Valve piston support spring is set between sleeve, filled with hydraulic oil in the sleeve below big piston, valve piston, big piston upper surface with
Piezo-electric crystal 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,
Groove is respectively provided with circle ring disk and fixed block, the both ends of back-moving spring are arranged in the groove of circle ring disk and fixed block；Institute
The valve element assembly stated includes armature, spring base, bottom plate, valve element, and armature, bottom plate, valve element are arranged while by tight from top to bottom
Fixing bolt links together, and spring base is located at outside armature and annular groove is formed between armature, and dividing plate lower surface sets annular
Groove, the both ends of back-moving spring are arranged in the annular groove of dividing plate and the annular groove of spring base, and pressure is set at armature center
Balance pipe, sets relief groove on bottom plate, and valve element is hollow structure, pressure compensation opening, relief groove, the hollow bulb of valve element
Split-phase is led to, and seal band and fin are set on valve element, and valve element upper surface opens up axially main air drain, and seal band forms ring cavity, rib
Circumferential tonifying Qi hole is provided with piece, through hole and passage be set respectively on dividing plate, the middle part of valve rod passes through through hole, the top of valve rod with
Circle ring disk is connected, and the lower section of valve rod is fixed together by jump ring and armature；The floating valve seat includes guide base, valve seat,
Guide base is fixed on the lower section of valve body, and valve seat is located at below valve element, and guide base inner ring is provided with T-shaped structure, valve seat outer ring
The T-shaped structure coordinated by setting with it is arranged in guide base, the both ends of valve seat back-moving spring be separately fixed at valve seat with
On valve element, outlet annulus is set, outlet annulus is located at below ring cavity, and gas outlet is set below outlet annulus on valve seat.
The utility model can also include：
The 1st, double anti-gas-leak structure is set between valve seat and guide base, the first heavy anti-gas-leak structure is in valve seat and led
Installation deformable seal circle above to pedestal junction, deformable seal circle interior edge top install packing washer, the second leakproof again additional
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, air inlet, air inlet diversion cavity formed below are formed between the top of fixed block and valve body, diversion cavity passes through logical
Stomata connects dividing plate underlying space；
Gas is vertically flowed into valve body by air inlet, is flowed into along diversion cavity and is full of valve inner, after piezo-electric crystal is powered,
Motion is separated valve element with valve base surface upwards, and gas circuit is opened, and gas valve is opened, and gas is by the main air drain in axial direction and circumferential tonifying Qi hole
Mixed admission mode flows into, and by ring cavity, is vertically flowed out by gas outlet；Piezo-electric crystal powers off, between dividing plate and spring base
In the presence of back-moving spring, armature band movable valve plug moves downward, until spool face is bonded with valve base surface, returns to initial bit
Put, gas circuit is closed, and gas valve is closed.
Advantage of the present utility model is：The utility model uses the structure with floating valve seat, and it can effectively prevent from firing
There is the situation of reverse leakage and the function with damping in gas jet valve, ensure that the reliability and safety of fuel gas injection valve work
Property；The utility model is kept away by opening pressure compensation opening at armature center and a number of relief groove being provided with bottom plate
Exempt from armature by axial force, make airline pressure inside and outside at armature be more easy to reach balance, improve armature response speed；The utility model
By opening circumferential tonifying Qi hole on four ribs of valve element, increase circulation area, reduce valve element quality, improve reliability.In valve element
The outlet annulus of certain angle is set at circumferential tonifying Qi hole, reduces flow losses, increases discharge coefficient.The utility model uses axle
To the direct air inlet of main air drain and the mixed admission mode of circumferential tonifying Qi gas inlet hole, increase charge flow rate coefficient, increase air inflow, together
When air-flow can be avoided to interfere, gas circuit is reached balance.It is effectively improved the supply efficiency of engine.
Brief description of the drawings
Fig. 1 is structural representation of the present utility model；
Fig. 2 is valve element composite unit structure enlarged drawing of the present utility model；
Fig. 3 is that gas circuit of the present utility model moves towards schematic diagram；
Fig. 4 is valve core structure top view；
Fig. 5 is valve core structure tomograph；
Fig. 6 is floating valve seat schematic enlarged-scale view；
Fig. 7 is floating valve seat force diagram.
Embodiment
Illustrate below in conjunction with the accompanying drawings and the utility model is described in more detail：
With reference to Fig. 1-7, Fig. 1 is that the whole of fuel gas injection valve is oriented to outside piezoelectric type of the utility model through type with floating valve seat
Body structural representation, including valve body 1, piezo actuator 3, valve element assembly 18, floating valve seat 20 4 are most of.Piezo actuator
3 are linked together by upper square thread and valve body 1.It has been sequentially arranged valve element assembly from top to bottom below piezo actuator 3
18th, floating valve seat 20.
Piezo actuator 3 is made up of piezo-electric crystal 2, fluid power amplifier, piezo-electric crystal back-moving spring 4, disk 6, valve rod 9,
Wherein fluid power amplifier is by 8 groups of big piston 5, big piston support spring 13, valve piston 14, valve piston support spring 15 and sleeve
Into fluid power amplifier is arranged in the top of dividing plate 17 on valve body 1, and the fuel oil of certain pressure, big piston 5, small work are covered with sleeve 8
Mating surface between plug 14 and sleeve 8 is equipped with sealing ring 7 and realizes sealing；Piezo-electric crystal 2 and the big piston 5 in fluid power amplifier
Upper surface is in contact, and is brought into close contact the two using big piston support spring 13, the two is arranged in the circular hole that the center of disk 6 is opened
Interior, the valve piston 14 in fluid power amplifier has been arranged symmetrically four, it is closely pasted with disk 6 using valve piston support spring 15
Close, the both sides of disk 6 are provided with screwed hole, realize and are threadedly coupled with valve rod 9, and the lower section of valve rod 9 is fixed on by jump ring 11 and armature 21
Together.
Valve element assembly 18 shown in Fig. 2 mainly by armature 21, spring base 22, fastening bolt 29, pad 27, bottom plate 23,
Valve element 24 forms.It is characterized in that：Armature 21, pad 27, bottom plate 23 and valve element 24 are linked together by fastening bolt 29, spring
Seat 22 is arranged on bottom plate 23.Pressure compensation opening 26 is provided with armature 21, a number of relief groove is provided with bottom plate 23
28, avoid armature 21 from being made airline pressure inside and outside at armature 21 be more easy to reach balance by axial force, improve armature 21 and respond speed
Degree；Back-moving spring 10 is between dividing plate 17 and spring base 22.Piezo-electric crystal 2 be powered after, piezo-electric crystal 2 by current excitation from
And extend, big piston 5 is moved downward therewith, and the liquid in the sleeve 8 of fluid power amplifier is compressed, pressure rise, in liquid
In the presence of pressure, the valve piston 14 on fluid power amplifier moves upwards, upward effect of the disk 6 by four valve pistons 14
Power, together smoothly motion upwards therewith, due to the connection function of screw thread, valve rod 9 also moves upwards, finally consolidating in jump ring 11
It is set under using, band movable valve plug assembly 18 moves upwards.In whole motion process, the axial movement of armature 21 with it is circumferentially positioned
By the cooperation between 4 guide pads 26 and valve element 24 on valve seat 41 come control realize, until spring base 22 upper surface with every
The lower surface of plate 17 is in contact, and after armature 21 maintains a period of time in the position, piezo-electric crystal 2 powers off, and piezo-electric crystal 2 starts to contract
Short, in the presence of big piston support spring 13, big piston 5 begins to return to initial position, liquid in the sleeve 8 in fluid power amplifier
Body pressure declines, and in the presence of back-moving spring 10, disk 6, valve piston 14 start to move downward, valve rod 9, valve element assembly 18
Move downward therewith, until pressure returns to original state in fluid power amplifier, big valve piston returns to initial position, now valve element group
Zoarium 18 is also corresponding to return to initial position, and gas valve is closed.Open 2 circumferential tonifying Qi holes respectively on four ribs 16 of valve element 24
35, response speed is improved, increases circulation area, while quality can be also reduced, improve reliability.Set at circumferential tonifying Qi hole 35
The outlet annulus 19 of certain angle, flow losses are reduced, increase discharge coefficient.Using axially main 37 direct air inlet of air drain and circumference
The mixed admission mode of the air inlet of tonifying Qi hole 35, increase charge flow rate coefficient, increase air inflow, while air-flow can be avoided to interfere,
Gas circuit is set to reach balance.Outlet annulus 19, face sealing, voltage stabilizing balance, and wider annulus are used between valve element 24 and valve seat 41
Area can reduce impact, improve reliability.
As shown in figure 3, gas is vertically flowed into valve body 1 by air inlet 32, flowed into along diversion cavity 33 full of in valve body 1
Portion, after piezo-electric crystal 2 is powered, motion is separated valve element 24 with the surface of valve seat 41 upwards, and now, gas circuit is opened, and gas valve is opened, gas
Body is flowed into by the axially mixed admission mode in main air drain 37 and circumferential tonifying Qi hole 35, by ring cavity 34, is finally hung down by gas outlet 36
Direct current goes out；Piezo-electric crystal 2 is powered off, and in the presence of the back-moving spring 10 between dividing plate 17 and spring base 22, armature 21 is transported downwards
Dynamic, band movable valve plug 24 is moved downward, until the surface of valve element 24 is bonded with the surface of valve seat 41, returns to initial position, and gas circuit is closed,
Gas valve is closed.
As shown in fig. 6, in order to prevent combustion gas reverse leakage, the reliability and security of fuel gas injection valve, this practicality are improved
It is new to employ the structure of floating valve seat 20.Floating valve seat 20 can be when gas valve external pressure height be with air pressure inside by gas valve
It is locked, it effectively prevent the reverse leakage of combustion gas.Floating valve seat 20 is made up of 7 parts：Guide base 39, valve seat 41 and valve
Seat back-moving spring 45, O-ring seal 40, packing washer 38, deformable seal circle 43, elastic washer 44.Guide base 39 passes through spiral shell
Bolt is fixed on valve body 1, and valve seat 41 is arranged on guide base 39.The inner ring of guide base 39 is carried outside T-shaped structure, with valve seat 41
The T-shaped structure of circle is engaged.The both ends of valve seat back-moving spring 45 are separately fixed on valve seat 41 and valve element 24, and keep necessarily pre-
Clamp force.
In order to prevent gas leakage between valve seat 41 and guide base 39, installed additional between valve seat 41 and guide base 39 double
Anti-gas-leak structure, the first weight anti-gas-leak structure are the installation deformable seal circles above valve seat 41 and the junction of guide base 39
43, the outer of deformable seal circle 43 is pressed in the mounting groove on guide base 39 and valve body 1, passes through guide base 39 and valve body
Bolt pretightening between 1 is fixed.Install packing washer 38 above the interior edge of deformable seal circle 43 additional, valve seat is fixed on by screw 42
On 41, packing washer 38 ensures uniform force, strengthens sealing.The material of deformable seal circle 43 uses deformable soft modeling
Material, ensures that it does not influence the motion of valve seat 41.Second resealing is installed additional in the T-shaped junction of valve seat 41 and guide base 39
Two layers of O-ring seal 40, further enhances sealing.T-shaped junction between valve seat 41 and guide base 39 has installed one layer additional
Elastic washer 44, vibratory impulse power during contact is reduced, serves the effect of damping.Effectively increase the reliable of gas valve
Property.
Valve seat 41 is by combustion gas inside the elastic force F4 of valve seat back-moving spring 45, gas valve the external gas pressure F1 and F2, gas valve
Pressure F3 and the thrust of valve element 24 effect.Valve element 24 is acted on by the elastic force of back-moving spring 10.Air pressure is more than combustion below gas valve
Air valve air pressure inside, gas valve the external gas pressure F1, F2 are respectively acting at the lower section of valve seat 41 and outlet annulus 19, valve seat 41
Lower contact area is much larger than outlet annulus 19, and therefore, F1 is much larger than F2, the external gas pressure be expanded to cause valve element 24 to
Before upper motion, the external gas pressure F1, F2 overcome the initial tension of spring of back-moving spring 10, valve seat 41 together with valve element 24 to
Upper motion.Valve seat 41 is moved upwardly until that spring base 14 is in contact with dividing plate 17.Even if now piezo-electric crystal 2 is powered, valve element 24
Also can not move upwards, gas valve can not be opened.Gas valve is locked.
When gas valve inner and outer air pressure recovers normal, valve seat 41 moves back down in the presence of valve seat back-moving spring 45
It is in situ.If now piezo-electric crystal 2 is powered, valve element 24 still remains stationary as, and gas valve is normally-open.Want to press during closing gas valve
Electric crystal 2 is powered off, and valve element 24 moves downward in the presence of back-moving spring 10, and gas valve is closed.If now piezo-electric crystal 2 is not
It is powered, valve seat 41 moves back down to original position together with valve element 24 in the presence of back-moving spring 10, and gas valve remains turned-off.Think
When opening gas valve, piezo-electric crystal 2 is powered, and valve element 24 moves upwards, and gas valve is normally-open.
From the above-mentioned course of work, outer guiding fuel gas injection valve of the utility model through type with floating valve seat 20 uses
Structure with floating valve seat 20, it is anti-that it can effectively prevent that fuel gas injection valve from occurring in the case of injection valve inner and outer air pressure exception
Situation to leakage and the function with damping, ensure that the reliability and safety of fuel gas injection valve work；Meanwhile this practicality
It is new by opening pressure compensation opening 26 at the center of armature 21 and a number of relief groove 28 being provided with bottom plate 23, avoid
Armature 21 is made airline pressure inside and outside at armature 21 be more easy to reach balance, improves the response speed of armature 21 by axial force；In valve element
The structure in circumferential tonifying Qi hole 35 is opened on 24 four ribs 16, increases circulation area, reduces the mass of valve element 24, improves reliability.
The outlet annulus 19 of certain angle is set at the circumferential tonifying Qi hole 35 of valve element 24, reduces flow losses, increases discharge coefficient.This practicality
The new mixed admission mode using the main 37 direct air inlet of air drain in axial direction and the circumferential air inlet of tonifying Qi hole 35, increase charge flow rate system
Number, increase air inflow, while air-flow can be avoided to interfere, gas circuit is reached balance.It is effectively improved the supply effect of engine
Rate.
The technical solution of the utility model：Fuel gas injection valve is oriented to outside a kind of piezoelectric type of through type with floating valve seat, it
It is made up of valve body, piezo actuator, valve element assembly, the major part of floating valve seat four.Piezo actuator by square thread thereon with
Valve body links together.Piezo actuator is by piezo-electric crystal, fluid power amplifier, piezo-electric crystal back-moving spring, disk, valve rod group
Into wherein fluid power amplifier is made up of big piston, big piston support spring, valve piston, valve piston support spring and sleeve, fluid power
Amplifier is arranged in above the dividing plate on valve body, the fuel oil of certain pressure is covered with sleeve, between big piston, valve piston and sleeve
Mating surface be equipped with sealing ring realize sealing；Piezo-electric crystal is in contact with the big piston upper surface in fluid power amplifier, utilizes
Big piston support spring is brought into close contact the two, and the two is arranged in the circular hole that disc centre is opened, small in fluid power amplifier
Piston has been arranged symmetrically four, it is brought into close contact with disk using valve piston support spring, and disk both sides are provided with screwed hole, with
Valve rod realizes threaded connection, is fixed together below valve rod by jump ring and armature.Below piezo actuator from top to bottom according to
It is secondary to be disposed with valve element assembly, floating valve seat.Valve element assembly is mainly by armature, spring base, fastening bolt, pad, bottom plate, valve
Core forms.It is characterized in that：Armature, pad, bottom plate and valve element are linked together by fastening bolt, and spring base is arranged on bottom plate
On, a number of relief groove is provided with bottom plate, pressure compensation opening is carried on armature.Back-moving spring is located at dividing plate and spring
Between seat.Open a circumferential tonifying Qi hole respectively on four ribs of valve element.Valve element and valve base chamber say compression ring band using three, and face is close
Envelope, voltage stabilizing balance, and there is wider annulus area.On circumferentially fixed 4 guide pads on valve seat of valve element, ensure that it hangs down
Straight degree, valve element move up and down spacing by the progress of the distance between spring base and dividing plate.Floating valve seat by guide base, valve seat and
Valve seat back-moving spring, O-ring seal, packing washer, deformable seal circle, elastic washer composition.It is characterized in that：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 both 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
Side's installation deformable seal circle, deformable seal circle outer are pressed in the mounting groove on guide base and valve body, pass through guiding
Bolt pretightening between pedestal and valve body is fixed.Install packing washer above deformable seal circle interior edge additional, be screwed in
On valve seat.The material of deformable seal circle uses deformable flexible plastic, ensures 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.
Claims (3)
1. fuel gas injection valve is oriented to outside a kind of piezoelectric type of through type with floating valve seat, it is characterized in that：Including valve body, float trap
Seat, valve rod, piezo-electric crystal, fluid power amplifier, dividing plate, valve element assembly, the inner upper of valve body are fixed with fixed block, fixed block
Middle part is provided with straight trough, and piezo-electric crystal is arranged in straight trough, and dividing plate is set in the middle part of valve body, fluid power amplifier is set above dividing plate, every
Valve element assembly is set below plate, and the fluid power amplifier includes big piston, valve piston, sleeve, and sleeve is arranged on dividing plate, covers
The center of cylinder 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
In thin outlet, big piston support spring is set between the flange and sleeve of big piston, set between the flange and sleeve of valve piston
Valve piston support spring, filled with hydraulic oil, big piston upper surface and piezo-electric crystal following table in the sleeve below big piston, valve piston
Face 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 and fixation
Groove is respectively provided with block, the both ends of back-moving spring are arranged in the groove of circle ring disk and fixed block；Described valve element combination
Body includes armature, spring base, bottom plate, valve element, and armature, bottom plate, valve element are arranged while be connected to by fastening bolt from top to bottom
Together, spring base is located at outside armature and annular groove is formed between armature, and dividing plate lower surface sets annular groove, back-moving spring
Both ends are arranged in the annular groove of dividing plate and the annular groove of spring base, setting pressure compensation opening at armature center, on bottom plate
Relief groove is set, and valve element is hollow structure, and pressure compensation opening, relief groove, the hollow space of valve element communicate, on valve element
Seal band and fin are set, and valve element upper surface opens up axially main air drain, and seal band forms ring cavity, circumferential benefit is provided with fin
Stomata, through hole and passage are set respectively on dividing plate, the middle part of valve rod passes through through hole, and the top of valve rod is connected with circle ring disk, valve
The lower section of bar is fixed together by jump ring and armature；The floating valve seat includes guide base, valve seat, and guide base is fixed on
The lower section of valve body, valve seat are 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 both ends of valve seat back-moving spring are separately fixed on valve seat and valve element, are set on valve seat
Outlet annulus is put, outlet annulus is located at below ring cavity, and gas outlet is set below outlet annulus.
2. fuel gas injection valve is oriented to outside piezoelectric type of a kind of through type with floating valve seat according to claim 1, its feature
It is：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 guide base
Installation deformable seal circle above junction, deformable seal circle interior edge top install packing washer, the second heavy anti-gas-leak structure additional
It is that two layers of O-ring seal, the T-shaped knot between valve seat and guide base are set in the T-shaped structure junction of valve seat and guide base
Structure junction sets elastic washer.
3. being oriented to fuel gas injection valve outside piezoelectric type of a kind of through type with floating valve seat according to claim 1 or 2, it is special
Sign is：Air inlet, air inlet diversion cavity formed below are formed between the top of fixed block and valve body, diversion cavity is connected by passage
Logical dividing plate underlying space；
Gas is vertically flowed into valve body by air inlet, is flowed into along diversion cavity and is full of valve inner, after piezo-electric crystal is powered, valve element
Upwards motion separated with valve base surface, gas circuit open, gas valve open, gas by axial direction main air drain and circumferential tonifying Qi hole mixing
Intake method flows into, and by ring cavity, is vertically flowed out by gas outlet；Piezo-electric crystal powers off, the reset between dividing plate and spring base
In the presence of spring, armature band movable valve plug moves downward, until spool face is bonded with valve base surface, returns to initial position,
Gas circuit is closed, and gas valve is closed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720760724.5U CN206816393U (en) | 2017-06-28 | 2017-06-28 | Fuel gas injection valve is oriented to outside a kind of piezoelectric type of through type with floating valve seat |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720760724.5U CN206816393U (en) | 2017-06-28 | 2017-06-28 | Fuel gas injection valve is oriented to outside a kind of piezoelectric type of through type with floating valve seat |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206816393U true CN206816393U (en) | 2017-12-29 |
Family
ID=60762432
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720760724.5U Withdrawn - After Issue CN206816393U (en) | 2017-06-28 | 2017-06-28 | Fuel gas injection valve is oriented to outside a kind of piezoelectric type of through type with floating valve seat |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206816393U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107143437A (en) * | 2017-06-28 | 2017-09-08 | 哈尔滨工程大学 | Fuel gas injection valve is oriented to outside a kind of piezoelectric type of the through type with floating valve seat |
-
2017
- 2017-06-28 CN CN201720760724.5U patent/CN206816393U/en not_active Withdrawn - After Issue
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107143437A (en) * | 2017-06-28 | 2017-09-08 | 哈尔滨工程大学 | Fuel gas injection valve is oriented to outside a kind of piezoelectric type of the through type with floating valve seat |
| CN107143437B (en) * | 2017-06-28 | 2023-06-09 | 哈尔滨工程大学 | Straight-through piezoelectric type external guide gas injection valve with floating valve seat |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN107091362A (en) | A kind of double electromagnetism fuel gas injection valves of adjustable actual internal area coaxial-type | |
| CN206816386U (en) | A kind of double electromagnetism fuel gas injection valves of adjustable actual internal area coaxial-type | |
| CN110671502A (en) | Water hammer resistant stop valve | |
| CN206816393U (en) | Fuel gas injection valve is oriented to outside a kind of piezoelectric type of through type with floating valve seat | |
| CN201326826Y (en) | High-pressure multistage step-down cage balanced type angle valve | |
| CN107165744A (en) | A kind of band adjustable actual internal area coaxial gas injection valve of floating valve seat | |
| CN104514901A (en) | Plastic sealing type pilot-operated safety valve | |
| CN206816391U (en) | A kind of interior guiding fuel gas injection valve of through type with floating valve seat | |
| CN206816392U (en) | Fuel gas injection valve is oriented in a kind of piezoelectric type of the through type with floating valve seat | |
| CN107143437A (en) | Fuel gas injection valve is oriented to outside a kind of piezoelectric type of the through type with floating valve seat | |
| CN206816394U (en) | Fuel gas injection valve is oriented in a kind of piezoelectric type of the bypass type with floating valve seat | |
| CN206816390U (en) | Fuel gas injection valve is oriented to outside a kind of piezoelectric type of bypass type with floating valve seat | |
| CN105937630B (en) | Heat dissipation type double-valve-clack adjusting stop type air exhaust valve | |
| CN206816402U (en) | A kind of outer guiding fuel gas injection valve of through type with floating valve seat | |
| CN107420227A (en) | A kind of interior guiding fuel gas injection valve of bypass type with floating valve seat | |
| CN107131076A (en) | A kind of interior guiding fuel gas injection valve of through type with floating valve seat | |
| CN206816395U (en) | A kind of interior guiding fuel gas injection valve of bypass type with floating valve seat | |
| CN206816398U (en) | A kind of outer guiding fuel gas injection valve of bypass type with floating valve seat | |
| CN206816389U (en) | A kind of band adjustable actual internal area coaxial gas injection valve of floating valve seat | |
| CN107143438A (en) | A kind of outer guiding fuel gas injection valve of through type with floating valve seat | |
| CN206846047U (en) | A kind of block form fuel gas injection valve with floating valve seat | |
| CN107131075A (en) | Fuel gas injection valve is oriented in a kind of piezoelectric type of the through type with floating valve seat | |
| CN107165746A (en) | A kind of outer guiding fuel gas injection valve of bypass type with floating valve seat | |
| CN107131077A (en) | Fuel gas injection valve is oriented to outside a kind of piezoelectric type of the bypass type with floating valve seat | |
| CN110593983B (en) | Integrated low-pressure oil supplementing exhaust valve driving device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned | ||
| AV01 | Patent right actively abandoned | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20171229 Effective date of abandoning: 20230609 |
|
| AV01 | Patent right actively abandoned |
Granted publication date: 20171229 Effective date of abandoning: 20230609 |