CN108915904A - Gas engine unbalanced fuel gas injection valve - Google Patents
Gas engine unbalanced fuel gas injection valve Download PDFInfo
- Publication number
- CN108915904A CN108915904A CN201810969177.0A CN201810969177A CN108915904A CN 108915904 A CN108915904 A CN 108915904A CN 201810969177 A CN201810969177 A CN 201810969177A CN 108915904 A CN108915904 A CN 108915904A
- Authority
- CN
- China
- Prior art keywords
- valve disc
- fuel gas
- gas injection
- ring type
- gas engine
- 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.)
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Classifications
-
- 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
-
- 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
- F02M21/026—Lift valves, i.e. stem operated valves
-
- 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
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Analytical Chemistry (AREA)
- Fuel-Injection Apparatus (AREA)
Abstract
The invention discloses a kind of gas engine unbalanced fuel gas injection valves, including valve body, electromagnet and core assembly.Electromagnet is located at the top of core assembly, and is connected with valve body；Wherein, valve body has downwardly open spool assembly cavity, and the opening of spool assembly cavity is inserted into spool assembly cavity for core assembly.Gas engine unbalanced fuel gas injection valve further includes anti-dropout component and ring type filling, and anti-dropout component, ring type filling and core assembly are all set in spool assembly cavity, and anti-dropout component and ring type filling are detachably connected with valve body respectively；The lower section of core assembly is arranged in anti-dropout component, and abuts the bottom end of core assembly；Ring type filling is located at the lower section of anti-dropout component.The present invention is easy to dismount maintenance, and safety in utilization is good, high reliablity.
Description
Technical field
The present invention relates to gas engine fuel gas supply technologies.
Background technique
In face of increasingly serious energy environment issues and constantly stringent emission regulation, develop internal combustion engine alternative fuel at
One of effective way to solve these problems.In internal combustion engine alternative fuel, natural gas due to rich reserves, octane number height with
And emission performance is good and is favored extensively.Therefore, it is welcome using natural gas engine as the gas engine industry of representative great
Opportunity to develop.
As the kernel component of gas engine gas supply system, the effect of fuel gas injection valve is with certain pressure
Certain natural gas is sprayed into engine inlets or cylinder and is mixed with air, gas inlet amount is mainly by adjusting spray
It penetrates pulsewidth to be controlled, performance quality is directly related to performance, burning and the discharge of engine.For fuel gas injection valve
It is required that mainly including：（1）Leakage rate will be maintained at extremely low level when fuel gas injection valve is closed, and any leakage part will affect gas
The performance of engine and hydrocarbon（hydrocarbon：HC）Discharge；（2）The response time of fuel gas injection valve is fast, motion stability and
Consistency is good；（3）High reliablity, dismounting maintenance cost are cheap.
The structure of existing common fuel gas injection valve see the applying date be August in 2016 31, application No. is
201610771921.7 Chinese invention patent application record.Existing fuel gas injection valve includes valve body, electromagnet and spool
Component.Electromagnet and core assembly are installed in valve body, and electromagnet is located at the top of core assembly, and is connected with valve body.Valve
The inner wall of the inner cavity of body is equipped with the step for being used to support core assembly.
Summary of the invention
Technical problem to be solved by the present invention lies in provide one kind to be easy to dismount that maintenance, safety in utilization be good, reliability
High gas engine unbalanced fuel gas injection valve.
The invention adopts the following technical scheme：
A kind of gas engine unbalanced fuel gas injection valve, including valve body, electromagnet and core assembly；Electromagnet is located at spool
The top of component, and be connected with valve body；Wherein, valve body has downwardly open spool assembly cavity, and the opening of spool assembly cavity can
Spool assembly cavity is inserted into for core assembly；Gas engine unbalanced fuel gas injection valve further includes anti-dropout component, anti-dropout
Component and core assembly are all set in spool assembly cavity, and anti-dropout component and valve body are detachably connected；Anti-dropout component is set
It sets in the lower section of core assembly, and abuts the bottom end of core assembly.
Further, gas engine unbalanced fuel gas injection valve further includes ring type filling, and ring type filling is set to spool dress
With intracavitary, ring type filling is located at the lower section of anti-dropout component, and ring type filling is detachably connected with valve body.
The present invention has the following advantages that：
1, in gas engine unbalanced fuel gas injection valve according to an embodiment of the present invention, valve body is arranged in core assembly
In spool assembly cavity, and reliably supported by anti-dropout component.When replacing some part in core assembly, it is not necessarily to
Electromagnet is removed, and anti-dropout component need to only be removed from valve body, can core assembly be taken out and be replaced, facilitate product
Dismounting maintenance；
2, gas engine unbalanced fuel gas injection valve according to an embodiment of the present invention by valve body lower portion be arranged ring type filling,
It can prevent combustion gas from assembling in valve body lower portion and air intake duct, to improve the safety in utilization of fuel gas injection valve；
3, gas engine unbalanced fuel gas injection valve according to an embodiment of the present invention can realize gas engine fuel gas injection
Function has the response time fast, motion stability and the features such as consistency is good and itself leakage is few, guarantees gas engine combustion
Expect that feed system is accurate, the operation is stable.
Detailed description of the invention
Fig. 1 is the basic structure schematic diagram of one embodiment of gas engine unbalanced fuel gas injection valve of the present invention.
Fig. 2 shows the axonometric drawings of ring type filling according to an embodiment of the invention.
Fig. 3 shows the axonometric drawing of armature according to an embodiment of the invention.
Fig. 4 shows the axonometric drawing of spring base according to an embodiment of the invention.
Fig. 5 shows the axonometric drawing of upper valve disc according to an embodiment of the invention.
Fig. 6 shows the diagrammatic cross-section of core assembly according to an embodiment of the invention.
Specific embodiment
Further explanation is made to the present invention with reference to the accompanying drawing.
In existing fuel gas injection valve, electromagnet and core assembly are successively assemblied in the inner cavity of valve body from top to down
In.If there is the situation of some part in core assembly to be replaced, it is necessary to first electromagnet is removed, it could be by core assembly
It takes out and replaces, therefore dismount maintenance to have inconvenience more.In addition, the inner cavity of valve body, which is located at the region below spool, is easy accumulated gas
Fuel, thus safety when reducing use.
Referring to Figure 1 to Fig. 6.Gas engine unbalanced fuel gas injection valve according to an embodiment of the invention, including
Valve body 1, electromagnet 2, core assembly 3, anti-dropout component 4 and ring type filling 5.
Electromagnet 2 is located at the top of core assembly, and is connected with valve body 1.Electromagnet is for controlling opening for fuel gas injection valve
It opens and closes and injection pulse width.In the present embodiment, electromagnet 2 is inserted from above into valve body 1 in assembly, and logical with valve body 1
Cross the connection of screw 61.Electromagnet 2 is E shape lamination electromagnet, and ironcore choke is formed by E shape silicon steel plate packing.
Valve body 1 has a downwardly open spool assembly cavity 10, the opening of spool assembly cavity 10 for core assembly from lower and
Spool assembly cavity 10 is inserted into Shangdi.
Core assembly 3 includes armature 31, spring base 32, upper valve disc 33, lower valve disc 34, several springs 35 and attachment screw
36。
Armature 31 is located at the lower section of electromagnet 2, and the lower end of armature 31 is protruded into the centre bore 320 of spring base 32, and against
The top surface of upper valve disc 33.Upper valve disc 33 is located at the lower section of armature 31, and attachment screw 36 passes through the centre bore 330 and rank of upper valve disc 33
The threaded hole 310 of 31 bottom end of iron connects, and armature 31, spring base 32 and upper valve disc 33 are held together.Several springs 35
Between spring base 32 and upper valve disc 33, the top and bottom of each spring 35 abut spring base 32 and upper valve disc 33 respectively.Bullet
Spring abutment 32 is detachably interconnected with valve body 1.The distance between the bottom surface of spring base 32 and the top surface of upper valve disc 33 are upper valve
The movement travel S of disk 33.
It is preferred that spring 35 is the thick waist paddy spring in intermediate thin both ends.The top of the bottom surface of spring base 32 and upper valve disc 33
Face offers counterbore identical with 35 quantity of spring respectively, and in the present embodiment, the quantity of spring 35 is the six roots of sensation, spring base 32
Bottom surface and the top surface of upper valve disc 33 are opened up respectively there are six counterbore.Six counterbores are uniformly distributed.Distinguish at the both ends of each spring 35
In the counterbore 321 of spring base 32 and the counterbore 331 of upper valve disc 33.The aperture of each counterbore is become larger by bottom hole to aperture,
And the lateral surface of the counterbore side wall of counterbore base and waist paddy spring is interference fitted.Spring 35 is using the thick waist paddy bullet in intermediate thin both ends
Spring, spring positioning will not have any friction with spring base 32 and upper valve disc 33 during exercise later, avoid uncontrollable friction
Power is conducive to the responsiveness and consistency that improve fuel gas injection valve.Only the position of counterbore bottom end and spring cooperation was set as
It is full of fit dimension, other positions form reaming, and it is unnecessary between spring 35 and spring base 32 and upper valve disc 33 to be further reduced
Frictional force.
Optionally, the top surface of spring base 32 and valve body 1 offer location hole in corresponding position respectively, and positioning pin 63 divides
Other interference is plugged in the location hole of spring base 32 and valve body 1, and positioning pin 63 and valve body 1 are welded to connect.Positioning pin 63 passes through
The mode of welding is connected on valve body 1, and positioning pin falls off caused by can avoid because of fuel gas injection valve high-frequency vibration, increases product
The safety used.
Further, the side of upper valve disc 33 offers air inlet duct 332 and air inlet 333, and the bottom surface of upper valve disc 33 opens up
There are multiple annular concentric air inlet ducts 334, air inlet duct 332 and air inlet 333 and upper valve are tried to get to the heart of a matter multiple annular concentric air inlet ducts in face
334 connections.The top surface of lower valve disc 34 offers multiple annular concentric outgassing grooves 344, adjacent every two annular concentric outgassing groove
344 are interconnected；Multiple annular concentric air inlet ducts 334 are mutually staggered with multiple annular concentric outgassing grooves 344.The bottom of lower valve disc 34
Face offers several ventholes 341 and the central through hole 340 with the coaxial arrangement of centre bore 330 of upper valve disc 33.Several outlets
Hole 341 is connected to multiple annular concentric outgassing grooves 344.In example in figure, the quantity of annular concentric outgassing groove 344 with it is concentric
The quantity of annular air inlet duct 334 is identical, is two.In the bottom surface of lower valve disc 34, setting central through hole 340 is conducive to directly survey
The actual internal area of the parameters such as displacement of valve disc 33 and increase valve in the on state, increases gas flow in amount.With position
Measuring system can directly measure the parameters such as the displacement of valve disc 33 from the lower surface of 1 lower part of valve body measurement attachment screw 36.
Further, the bottom surface of lower valve disc 34 is provided with one or more threaded holes 343, by using extracting tool and screw thread
Hole 343 connects, and the lower valve disc 34 of easy to disassemble and replacement improves the service life of fuel gas injection valve.
Upper valve disc 33 can move between scram position and open position.When electromagnet 2 is powered, armature 31 is in electromagnetic force
Active force be attracted upwards, valve disc 33 moves upwards in drive, is in the open position valve disc 33, the bottom surface of upper valve disc 33 with
Occur gap between the top surface of lower valve disc 34, form blast tube, blast tube is connected to several ventholes of lower valve disc.This
When, the combustion gas flowed sideways into from valve body, through air inlet duct 332, air inlet 333, multiple annular concentric air inlet ducts 334, blast tube,
Central through hole 340, multiple annular concentric outgassing grooves 344 and several ventholes 341 flow out fuel gas injection valve.It is disconnected in electromagnet 2
When electric, under the action of spring force and gaseous-pressure, upper valve disc 33 resets, and upper valve disc 33 is off position, upper valve disc 33
Bottom surface and the top surface of lower valve disc 34 fit closely, due to multiple annular concentric air inlet ducts 334 and multiple annular concentric outgassing grooves
344 mutually stagger, therefore can form sealing plane, block blast tube.
Anti-dropout component 4, ring type filling 5 and core assembly are all set in spool assembly cavity 10, anti-dropout component 4 and filling
Ring 5 is detachably connected with valve body 1 respectively.The lower section of core assembly is arranged in anti-dropout component 4, and abuts the bottom of core assembly
End；Ring type filling 5 is located at the lower section of anti-dropout component 4.
In the present embodiment, anti-dropout component 4 is circlip, and the medial surface of spool assembly cavity 10 is equipped with jump-ring slot 101, circlip
Outer edge zone fix in jump-ring slot 101, the inner edge margin of circlip abuts the bottom end of core assembly.More specifically
It says, circlip is connected to the bottom surface of lower valve disc 34.Circlip can be obtained and processing on the basis of standard check ring.
The outer peripheral surface of ring type filling 5 is equipped with external screw thread, and ring type filling 5 has a central through hole 50.In the present embodiment, center is logical
The shape in hole 50 is hexagon.The medial surface of spool assembly cavity 10 is equipped with the internal screw thread matched with the external screw thread of ring type filling 5, fills out
The outer peripheral surface for filling ring 5 is connect with the inside surface helix of spool assembly cavity 10.Setting ring type filling combustion gas can be prevented in valve body lower portion and
Air intake duct aggregation, to improve the safety in utilization of fuel gas injection valve.
In the present embodiment, the quantity of ring type filling 5 is two, which is arranged above and below；Lower section ring type filling it is upper
End face is against the lower end surface of top ring type filling.Two ring type fillings, which are arranged, can prevent from filling out caused by because of fuel gas injection valve high-frequency vibration
It fills ring to fall off, further improves the use degree of safety of product.
In the present embodiment, electromagnet 2, core assembly, circlip and Raschig ring are coaxially mounted in valve body 10.Electromagnet 2
Fluororubber O-type sealing ring 7 is separately installed between valve body 1 and between lower valve disc 34 and valve body 1, to prevent gas leakage.
The outer peripheral surface of the junction of the outer peripheral surface of the bottom surface and spring base 32 of spring base 32 and the bottom surface of upper valve disc 33 and upper valve disc 33
Junction be provided with chamfering or fillet, in order to mount and dismount.
In actual use, gas engine unbalanced fuel gas injection valve and engine according to an embodiment of the invention
Cylinder cap can be bolted, and be sealed between engine cylinder cover by O-ring seal.Valve body 1 and engine cylinder cover
The through-hole of connection is threaded hole, to facilitate fuel gas injection valve lifting disassembly.
Gas engine unbalanced fuel gas injection valve according to an embodiment of the invention uses unbalanced structure, reduces
Itself leakage rate of fuel gas injection valve, improves product reliability.
In the application, the orientation or positional relationship of the instructions such as "upper", "lower" is that orientation based on the figure or position are closed
System, is merely for convenience of description of the present invention and simplification of the description, rather than the device or element of indication or suggestion meaning must have
Specific orientation is constructed and operated in a specific orientation, therefore is not considered as limiting the invention.
Claims (10)
1. a kind of gas engine unbalanced fuel gas injection valve, including valve body, electromagnet and core assembly；The electromagnet position
It is connected in the top of the core assembly, and with the valve body；It is characterized in that, there is the valve body downwardly open spool to fill
With chamber, the opening of the spool assembly cavity is inserted into the spool assembly cavity for the core assembly；
The gas engine unbalanced fuel gas injection valve further includes anti-dropout component, the anti-dropout component and the spool
Component is all set in the spool assembly cavity, and anti-dropout component and the valve body are detachably connected；The setting of anti-dropout component
In the lower section of core assembly, and abut the bottom end of core assembly.
2. gas engine unbalanced fuel gas injection valve as described in claim 1, which is characterized in that the gas engine
Unbalanced fuel gas injection valve further includes ring type filling, and the ring type filling is set in the spool assembly cavity, and ring type filling is located at institute
The lower section of anti-dropout component is stated, ring type filling and the valve body are detachably connected.
3. gas engine unbalanced fuel gas injection valve as claimed in claim 1 or 2, which is characterized in that the anti-dropout
Component is circlip；
The medial surface of the spool assembly cavity is equipped with jump-ring slot；The outer edge zone of the circlip is fixed in the jump-ring slot
Interior, the inner edge margin of the circlip abuts the bottom end of the core assembly.
4. gas engine unbalanced fuel gas injection valve as claimed in claim 2, which is characterized in that outside the ring type filling
Circumferential surface is equipped with external screw thread, and the medial surface of the spool assembly cavity is equipped with the internal screw thread matched with the external screw thread of the ring type filling,
The outer peripheral surface of ring type filling is connect with the inside surface helix of spool assembly cavity.
5. gas engine unbalanced fuel gas injection valve as claimed in claim 4, which is characterized in that the number of the ring type filling
Amount is two, which is arranged above and below；The upper surface of lower section ring type filling is against the lower end surface of top ring type filling.
6. gas engine unbalanced fuel gas injection valve as claimed in claim 1 or 2, which is characterized in that the spool group
Part includes armature, spring base, upper valve disc, lower valve disc, several springs and attachment screw；
The armature is located at the lower section of the electromagnet, and the lower end of armature is protruded into the centre bore of the spring base；The upper valve
Disk is located at the lower section of the armature, and the centre bore that the attachment screw passes through the upper valve disc is connect with armature；Described several
For spring between the spring base and the upper valve disc, the top and bottom of each spring abut spring base and upper valve disc respectively；
The spring base is detachably interconnected with the valve body；The bottom surface of the lower valve disc offers several ventholes；
The upper valve disc can move between scram position and open position, in electromagnet power-off, at the upper valve disc
In scram position, the bottom surface of upper valve disc and the top surface of lower valve disc are fitted closely, and form sealing plane, are powered in the electromagnet
When, the upper valve disc is in the open position, and blast tube, the combustion gas are formed between the bottom surface of upper valve disc and the top surface of lower valve disc
Channel is connected to several ventholes of lower valve disc；
The anti-dropout component is located at the lower section of the lower valve disc, and is connected to the bottom surface of lower valve disc.
7. gas engine unbalanced fuel gas injection valve as claimed in claim 6, which is characterized in that the side of the upper valve disc
Face offers air inlet duct and air inlet, and the bottom surface of the upper valve disc offers multiple annular concentric air inlet ducts, the air inlet duct
It is connected to try to get to the heart of a matter multiple annular concentric air inlet ducts in face of air inlet and upper valve；
The top surface of the lower valve disc offers multiple annular concentric outgassing grooves, and adjacent every two annular concentric outgassing groove mutually interconnects
It is logical, and multiple annular concentric outgassing grooves are connected to several ventholes；The multiple annular concentric air inlet duct with it is the multiple
Annular concentric outgassing groove mutually staggers；The bottom surface of the lower valve disc offers logical with the center of the centre bore of upper valve disc coaxial arrangement
Hole.
8. gas engine unbalanced fuel gas injection valve as claimed in claim 6, which is characterized in that the bottom of the lower valve disc
Face is provided with one or more threaded holes.
9. gas engine unbalanced fuel gas injection valve as claimed in claim 6, which is characterized in that the spring is centre
The thick waist paddy spring in thin both ends；
The bottom surface of the spring base and the top surface of upper valve disc offer counterbore identical with number of springs respectively, and the two of each spring
End is located in the counterbore of spring base and the counterbore of upper valve disc；The aperture of the counterbore is become larger by bottom hole to aperture, and
The lateral surface of the counterbore side wall of counterbore base and the waist paddy spring is interference fitted.
10. gas engine unbalanced fuel gas injection valve as claimed in claim 6, which is characterized in that the spring base
Top surface and the valve body offer location hole in corresponding position respectively, and interference is plugged on spring base and valve body to positioning pin respectively
Location hole in, and the positioning pin and the valve body are welded to connect.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810969177.0A CN108915904A (en) | 2018-08-23 | 2018-08-23 | Gas engine unbalanced fuel gas injection valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810969177.0A CN108915904A (en) | 2018-08-23 | 2018-08-23 | Gas engine unbalanced fuel gas injection valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108915904A true CN108915904A (en) | 2018-11-30 |
Family
ID=64405941
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810969177.0A Pending CN108915904A (en) | 2018-08-23 | 2018-08-23 | Gas engine unbalanced fuel gas injection valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108915904A (en) |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH09217854A (en) * | 1996-02-07 | 1997-08-19 | Ckd Corp | Support structure of cylindrical member and solenoid valve having the support structure |
| CN102022401A (en) * | 2010-11-26 | 2011-04-20 | 北京七星华创电子股份有限公司 | Packing ring and flow control system |
| CN102518848A (en) * | 2011-12-13 | 2012-06-27 | 乔登卫浴(江门)有限公司 | Elbow pressure reducing valve |
| CN202392121U (en) * | 2011-12-02 | 2012-08-22 | 攀枝花钢城集团有限公司 | Sealing valve for opened steel drum |
| CN103411008A (en) * | 2013-07-02 | 2013-11-27 | 中国兵器工业集团第七0研究所 | Self-operated two-way ventilation adjusting valve |
| CN106121867A (en) * | 2016-08-31 | 2016-11-16 | 重庆红江机械有限责任公司 | A kind of gaseous propellant engine fuel gas electric spray valve |
| CN208702573U (en) * | 2018-08-23 | 2019-04-05 | 中国船舶重工集团公司第七一一研究所 | Gas engine unbalanced fuel gas injection valve |
-
2018
- 2018-08-23 CN CN201810969177.0A patent/CN108915904A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH09217854A (en) * | 1996-02-07 | 1997-08-19 | Ckd Corp | Support structure of cylindrical member and solenoid valve having the support structure |
| CN102022401A (en) * | 2010-11-26 | 2011-04-20 | 北京七星华创电子股份有限公司 | Packing ring and flow control system |
| CN202392121U (en) * | 2011-12-02 | 2012-08-22 | 攀枝花钢城集团有限公司 | Sealing valve for opened steel drum |
| CN102518848A (en) * | 2011-12-13 | 2012-06-27 | 乔登卫浴(江门)有限公司 | Elbow pressure reducing valve |
| CN103411008A (en) * | 2013-07-02 | 2013-11-27 | 中国兵器工业集团第七0研究所 | Self-operated two-way ventilation adjusting valve |
| CN106121867A (en) * | 2016-08-31 | 2016-11-16 | 重庆红江机械有限责任公司 | A kind of gaseous propellant engine fuel gas electric spray valve |
| CN208702573U (en) * | 2018-08-23 | 2019-04-05 | 中国船舶重工集团公司第七一一研究所 | Gas engine unbalanced fuel gas injection valve |
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