CN112761827A - Gas nozzle with variable sealing sectional area - Google Patents
Gas nozzle with variable sealing sectional area Download PDFInfo
- Publication number
- CN112761827A CN112761827A CN202110109464.6A CN202110109464A CN112761827A CN 112761827 A CN112761827 A CN 112761827A CN 202110109464 A CN202110109464 A CN 202110109464A CN 112761827 A CN112761827 A CN 112761827A
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- China
- Prior art keywords
- sealing
- air inlet
- sealing ring
- channel
- cover plate
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- 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
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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
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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
- F02M21/023—Valves; Pressure or flow regulators in the fuel supply or return system
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
- F02M21/00—Apparatus for supplying engines with non-liquid fuels, e.g. gaseous fuels stored in liquid form
- F02M21/02—Apparatus for supplying engines with non-liquid fuels, e.g. gaseous fuels stored in liquid form for gaseous fuels
- F02M21/0218—Details on the gaseous fuel supply system, e.g. tanks, valves, pipes, pumps, rails, injectors or mixers
- F02M21/0248—Injectors
- F02M21/0251—Details of actuators therefor
- F02M21/0254—Electric actuators, e.g. solenoid or piezoelectric
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
- F02M21/00—Apparatus for supplying engines with non-liquid fuels, e.g. gaseous fuels stored in liquid form
- F02M21/02—Apparatus for supplying engines with non-liquid fuels, e.g. gaseous fuels stored in liquid form for gaseous fuels
- F02M21/0218—Details on the gaseous fuel supply system, e.g. tanks, valves, pipes, pumps, rails, injectors or mixers
- F02M21/0248—Injectors
- F02M21/0257—Details of the valve closing elements, e.g. valve seats, stems or arrangement of flow passages
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/10—Internal combustion engine [ICE] based vehicles
- Y02T10/30—Use of alternative fuels, e.g. biofuels
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Analytical Chemistry (AREA)
- Magnetically Actuated Valves (AREA)
Abstract
The gas nozzle with the variable sealing sectional area comprises an air inlet channel and an air outlet channel, and is controlled to be opened and closed by an electromagnetic valve; the sealing component of the electromagnetic valve comprises a sealing cover plate and an elastic sealing ring, wherein the sealing ring deforms under the pressure action of the sealing cover plate, and the sealing inner area in contact with the sealing cover plate is increased or reduced. The invention changes the sealing inner area through the deformation of the sealing ring, and can conveniently change the electromagnetic attraction force required by opening the electromagnetic valve. According to the invention, the air inlet end cover is provided with the plurality of air inlet cooling channels, and the electromagnetic valve is cooled by utilizing the characteristic that compressed or liquefied fuel gas enters the fuel gas nozzle through the air inlet channel and then expands to absorb heat, so that the working temperature of the electromagnetic valve is prevented from being overhigh. Meanwhile, the sealing structure of the sealing cover plate and the sealing ring is adopted, so that the gas burner is more suitable for sealing and spraying gas. The supporting spring plate is used as an elastic component, so that the occupied space is reduced while the armature is supported. The invention has stable work, simple and compact structure and convenient processing.
Description
Technical Field
The invention belongs to the technical field of engines, and particularly relates to a gas nozzle with a variable sealing sectional area on a gas engine.
Background
Gas engine technology has developed rapidly in recent years, and gas engines have the following advantages compared with oil-fired engines: (1) petroleum resources are gradually reduced, while gas resources are very abundant; (2) the pollution of industry and cities is increasingly serious, acid rain is frequent, and the living environment of human beings is increasingly worsened, wherein one of the main reasons is that the exhaust pollution of automobiles and various power machines burning petroleum fuels is increasingly serious. Gaseous fuels are known as clean fuels. Especially, compared with gasoline and diesel oil, the compressed natural gas can greatly reduce the emission of carbon monoxide, sulfur dioxide, carbon dioxide and the like; and the discharge also has no carcinogenic and toxic substances such as benzene, lead and the like; (3) the universality and the reproducibility of the existence of the gas fuel to a certain extent promote the development of the gas engine; (4) the gas engine has the characteristics of local materials, waste gas recovery and low price of used fuel. With the coming of the national six-emission standard, the advantages of the gas engine are more prominent.
The nozzle of the gas engine usually adopts an electromagnetic valve to control the injection of the fuel gas. The sealing section of the conventional nozzle is fixed, and the opening driving force of the electromagnetic valve is also fixed. After the electromagnetic coil is electrified, an eddy current phenomenon is generated in the magnetic line of force passing through the electromagnetic coil, so that the electromagnetic coil generates heat in the electromagnetic coil, the resistance value of the electromagnetic coil is further increased due to the heat in the electromagnetic coil, and heat is generated. Therefore, the heat dissipation effect of the electromagnetic valve directly influences the working stability of the nozzle.
Disclosure of Invention
The invention aims to provide a gas nozzle with a variable sealing sectional area, which has the advantages of simple structure, variable sealing sectional area, good heat dissipation effect and sealing effect and stable work, aiming at the defects of the existing solenoid valve control nozzle.
In order to achieve the purpose, the invention adopts the following technical scheme:
the gas nozzle with the variable sealing sectional area comprises an air inlet channel and an air outlet channel, and is controlled to be opened and closed by an electromagnetic valve; the sealing part of solenoid valve is including sealed apron and elastic sealing circle, its characterized in that: the sealing ring deforms under the pressure action of the sealing cover plate, and the sealing inner area in contact with the sealing cover plate is increased or reduced. When the sealing ring is deformed, the stress of the sealing cover plate is changed, and the opening driving force required by the electromagnetic valve is changed accordingly. The setting of sealing washer deformation, the required electromagnetic attraction is opened to change solenoid valve that can be convenient.
It is further characterized in that: the air inlet channel is arranged on the air inlet end cover, and the air outlet channel is arranged on the air outlet end cover; the electromagnetic valve comprises a valve body, a coil, an armature, an elastic component, a sealing cover plate and a sealing ring; the coil is arranged outside the air inlet end cover, the sealing ring is arranged on the air outlet end cover, and the sealing cover plate is connected to the armature.
Further: the initial state of the electromagnetic valve is a closed state; the elastic component provides elastic force to press the sealing cover plate against the sealing ring. In the initial state, the electromagnetic valve seals the nozzle, the gas nozzle does not spray gas, and the gas in the gas inlet channel simultaneously exerts pressure on the sealing cover plate, so that the sealing effect of the sealing mechanism is improved. When the electromagnetic valve is electrified, the air inlet end cover generates magnetic force to attract the armature, the armature is forced to overcome the elastic force of the spring component to move rightwards, and meanwhile, the armature drives the sealing cover plate to move rightwards simultaneously, so that the sealing cover plate is separated from the sealing ring, and fuel gas enters the gas outlet channel through the metering hole.
Preferably: the elastic component is a supporting spring plate, the armature and the sealing cover plate are arranged on the supporting spring plate, and the edge of the supporting spring plate is fixedly arranged on the air outlet end cover. Adopt the supporting spring board when providing support for armature, can also provide elastic force, compare simultaneously with elastomeric element such as traditional spring and be convenient for the installation fixed, occupation space is few, the miniaturization of the nozzle of being convenient for.
Further: a sealing ring mounting seat is arranged in the air outlet end cover, and the sealing ring is mounted on the sealing ring mounting seat; and a metering hole is formed in the sealing ring mounting seat.
Preferably: the sealing ring is an O-shaped sealing ring, and the diameter of the sealing ring is larger than the depth of the sealing ring mounting seat. The O-shaped sealing ring is used as a sealing element, the sealing cover plate is pressed on the O-shaped sealing ring in an initial state, so that the O-shaped sealing ring is deformed, the contact area between the sealing cover plate and the O-shaped sealing ring is increased, the stress area of the sealing cover plate on the side of the metering hole is reduced, the pressure intensity is increased, the stress of the sealing cover plate is also changed, and the opening driving force required by the electromagnetic valve is also changed. Through the setting of O type sealing washer and sealing washer mount pad degree of depth, the required electromagnetic attraction is opened to change solenoid valve that can be convenient.
It is further characterized in that: the method is characterized in that: the air inlet channel is multiple, and comprises a main air inlet channel and a plurality of air inlet cooling channels distributed in the air inlet end cover. The compressed or liquefied fuel gas enters the fuel gas nozzle through the air inlet channel and then expands to absorb a large amount of heat energy. And can increase the heat exchange area between end cover and the solenoid valve through a plurality of cooling channels that admit air to effectual cooling to the solenoid valve prevents that the solenoid valve from because of the work unstability that operating temperature height caused.
Further: the air inlet cooling channel is positioned at the edge of the air inlet end cover and distributed around the main air inlet channel. The air inlet cooling channel is arranged at the edge of the air inlet end cover, so that the air inlet cooling channel is closer to the electromagnetic valve, the distance of the heat transfer channel is reduced, and the heat dissipation effect is improved.
Further: the inlet air cooling channel comprises an axially arranged channel and a radially arranged channel; the main air inlet channel is communicated with the air inlet cooling channel through the air inlet cooling channel which is axially arranged. After entering the air inlet channel, the combustible gas respectively enters the main air inlet channel and the air inlet cooling channel, cools the electromagnetic valve, converges together and then is ejected out through the air outlet channel.
Preferably: the main air inlet channel is of a tapered structure. The tapered channel can accelerate the flow rate of the gas.
The invention changes the sealing inner area through the deformation of the sealing ring, and can conveniently change the electromagnetic attraction force required by opening the electromagnetic valve. The air inlet end cover is provided with a plurality of air inlet cooling channels, and the electromagnetic valve is cooled by utilizing the characteristic that compressed or liquefied gas enters the gas nozzle through the air inlet channels and then expands to absorb heat, so that the working temperature of the electromagnetic valve is prevented from being too high. Meanwhile, the sealing structure of the sealing cover plate and the sealing ring is adopted, so that the gas burner is more suitable for sealing and spraying gas. The supporting spring plate is used as an elastic component, so that the occupied space is reduced while the armature is supported. The invention has stable work, simple and compact structure and convenient processing.
Drawings
FIG. 1 is a schematic view of the structure of the present invention.
FIG. 2 is a schematic cross-sectional view of an intake air cooling passage.
Fig. 3 is a schematic structural view of a supporting spring plate.
Fig. 4-7 are enlarged views of a portion of fig. 1, illustrating four types of seal ring mounting means on the seal ring mounting seat.
Detailed Description
As shown in fig. 1 and 2, the gas nozzle with a variable sealing cross-sectional area comprises an inlet channel arranged on an inlet end cover 1 and an outlet channel 3 arranged on an outlet end cover 2, and the opening and closing of the gas nozzle are controlled by an electromagnetic valve. The air inlet channel is a plurality of, including main air inlet channel 4 and a plurality of cooling channels 5 that admit air of distributing in air inlet end cover 1 edge, main air inlet channel 4 periphery. The main air inlet channel 4 is of a tapered structure, and the flow speed of fuel gas can be improved. A gas cavity 6 is formed between the gas outlet end cover 2 and the gas inlet end cover 1. The intake air cooling passage 5 includes an axially disposed passage and a radially disposed passage; the main air inlet channel 4 is communicated with the air inlet cooling channel 5 through the air inlet cooling channel 5 which is axially arranged, and the fuel gas finally converges in the cavity 6 through the main air inlet channel 4 and the air inlet cooling channel 5.
The electromagnetic valve comprises a valve body 7, a coil 8, an armature 9, a supporting spring plate 14, a sealing cover plate 10 and a sealing ring 11. The coil 8 is arranged outside the air inlet end cover 1, and the sealing cover plate 10 and the sealing ring 11 are positioned in the cavity 6. The sealing ring 11 is arranged on a sealing ring mounting seat 12 on the air outlet end cover 2; the seal ring mounting seat 12 is provided with a metering hole 13 therein. A sealing cover plate 10 is attached to the armature 9. The sealing ring 11 and the sealing cover plate 10 form a sealing pair to control the on-off of the gas channel. The sealing ring 11 deforms under the pressure of the sealing cover plate 10, the sealing inner area contacting with the sealing cover plate 10 is increased or reduced, and the opening force of the electromagnetic valve is changed. The armature 9 and the sealing cover plate 10 are arranged on a supporting spring plate 14 shown in fig. 3, and the edge of the supporting spring plate 14 is fixedly arranged on the air outlet end cover 2.
At initial state coil 8 outage, the solenoid valve is closed state, and the solenoid valve is sealed with the nozzle, and the gas nozzle does not spray the gas, and the gas in the inlet channel assembles in cavity 6, exerts pressure to sealed apron 10, improves sealing mechanism's sealed effect. The coil 8 of the electromagnetic valve is electrified, the air inlet end cover 1 generates magnetic force to attract the armature 9, the armature 9 is forced to overcome the elastic force of the supporting spring plate 14 to move rightwards, meanwhile, the armature 9 drives the sealing cover plate 10 to move rightwards, therefore, the sealing cover plate 10 is separated from the sealing ring 11, and fuel gas enters the air outlet channel 3 through the metering hole 13 to be sprayed.
Preferably: the sealing ring is an O-shaped sealing ring, and the diameter of the O-shaped sealing ring is larger than the depth.
As shown in fig. 4, the air outlet end cover is recessed inwards to form a sealing ring mounting seat.
As shown in fig. 5, the sealing ring mounting seat is located on the outer end face of the air outlet end cover, and the sealing cover plate is provided with a concave inclined surface matched with the sealing ring.
As shown in fig. 6, the sealing ring mounting seat is of an annular structure and is located at the outer edge of the air outlet end cover.
As shown in fig. 7, the sealing ring mounting seat is an annular structure with an inclined plane and is located at the outer edge of the air outlet end cover. The sealing ring is arranged on the inclined plane of the annular structure.
The O-shaped sealing ring is used as a sealing element, when the sealing cover plate is pressed against the O-shaped sealing ring, the O-shaped sealing ring deforms, the contact area between the sealing cover plate and the O-shaped sealing ring is increased, the stress area of the sealing cover plate on the side of the metering hole is reduced, the pressure intensity is increased, the stress of the sealing cover plate is changed, and the opening driving force required by the electromagnetic valve is changed accordingly.
According to the invention, the air inlet end cover 1 is provided with the plurality of air inlet cooling channels 5, and the electromagnetic valve is cooled by utilizing the characteristic that compressed or liquefied fuel gas enters the fuel gas nozzle through the air inlet channels and then expands to absorb heat, so that the working temperature of the electromagnetic valve is prevented from being overhigh. Meanwhile, the sealing structure of the sealing cover plate 10 and the sealing ring 11 is more suitable for sealing and injecting fuel gas. The use of the supporting spring plate 14 as a resilient member reduces the space occupied while providing support for the armature 9. The invention has stable work, simple and compact structure and convenient processing. Through the setting of O type sealing washer and sealing washer mount pad degree of depth, the required electromagnetic attraction is opened to change solenoid valve that can be convenient.
Claims (10)
1. The gas nozzle with the variable sealing sectional area comprises an air inlet channel and an air outlet channel, and is controlled to be opened and closed by an electromagnetic valve; the sealing part of solenoid valve is including sealed apron and elastic sealing circle, its characterized in that: the sealing ring deforms under the pressure action of the sealing cover plate, and the sealing inner area in contact with the sealing cover plate is increased or reduced.
2. A variable seal area gas nozzle as recited in claim 1, wherein: the air inlet channel is arranged on the air inlet end cover, and the air outlet channel is arranged on the air outlet end cover; the electromagnetic valve comprises a valve body, a coil, an armature, an elastic component, a sealing cover plate and a sealing ring; the coil is arranged outside the air inlet end cover, the sealing ring is arranged on the air outlet end cover, and the sealing cover plate is connected to the armature.
3. A variable seal area gas nozzle as claimed in claim 2, wherein: the initial state of the electromagnetic valve is a closed state; the elastic component provides elastic force to press the sealing cover plate against the sealing ring.
4. A variable seal area gas nozzle as claimed in claim 3, wherein: the elastic component is a supporting spring plate, the armature and the sealing cover plate are arranged on the supporting spring plate, and the edge of the supporting spring plate is fixedly arranged on the air outlet end cover.
5. A variable seal area gas nozzle as claimed in claim 4, wherein: a sealing ring mounting seat is arranged in the air outlet end cover, and the sealing ring is mounted on the sealing ring mounting seat; and a metering hole is formed in the sealing ring mounting seat.
6. A variable seal area gas nozzle as claimed in claim 5, wherein: the sealing ring is an O-shaped sealing ring, and the diameter of the sealing ring is larger than the depth of the sealing ring mounting seat.
7. A variable seal area gas nozzle as claimed in any one of claims 2 to 6, wherein: the method is characterized in that: the air inlet channel is multiple, and comprises a main air inlet channel and a plurality of air inlet cooling channels distributed in the air inlet end cover.
8. A variable seal area gas nozzle as claimed in claim 7, wherein: the air inlet cooling channel is positioned at the edge of the air inlet end cover and distributed around the main air inlet channel.
9. A variable seal area gas nozzle as recited in claim 8, wherein: the inlet air cooling channel comprises an axially arranged channel and a radially arranged channel; the main air inlet channel is communicated with the air inlet cooling channel through the air inlet cooling channel which is axially arranged.
10. A variable seal area gas burner as claimed in claim 9, wherein: the main air inlet channel is of a tapered structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110109464.6A CN112761827A (en) | 2021-01-27 | 2021-01-27 | Gas nozzle with variable sealing sectional area |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110109464.6A CN112761827A (en) | 2021-01-27 | 2021-01-27 | Gas nozzle with variable sealing sectional area |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112761827A true CN112761827A (en) | 2021-05-07 |
Family
ID=75706045
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110109464.6A Pending CN112761827A (en) | 2021-01-27 | 2021-01-27 | Gas nozzle with variable sealing sectional area |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112761827A (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2009052470A (en) * | 2007-08-27 | 2009-03-12 | Aisan Ind Co Ltd | Fuel injection valve |
| CN101619689A (en) * | 2009-08-07 | 2010-01-06 | 陈力 | Fuel gas high-speed electromagnetic valve for car |
| CN101965449A (en) * | 2007-08-20 | 2011-02-02 | 罗伯特.博世有限公司 | Method and device for injecting fuel into the combustion chamber of an internal combustion engine |
| CN102076951A (en) * | 2008-06-27 | 2011-05-25 | 罗伯特·博世有限公司 | Fuel injector |
| CN202338431U (en) * | 2011-11-09 | 2012-07-18 | 石旻磊 | Direct-acting gas nozzle for use of gas automobile |
| CN103306857A (en) * | 2012-03-13 | 2013-09-18 | 上海依相燃气设备有限公司 | CNG/LPG (compressed natural gas/liquefied petroleum gas) fuel gas spray nozzle |
-
2021
- 2021-01-27 CN CN202110109464.6A patent/CN112761827A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101965449A (en) * | 2007-08-20 | 2011-02-02 | 罗伯特.博世有限公司 | Method and device for injecting fuel into the combustion chamber of an internal combustion engine |
| JP2009052470A (en) * | 2007-08-27 | 2009-03-12 | Aisan Ind Co Ltd | Fuel injection valve |
| CN102076951A (en) * | 2008-06-27 | 2011-05-25 | 罗伯特·博世有限公司 | Fuel injector |
| CN101619689A (en) * | 2009-08-07 | 2010-01-06 | 陈力 | Fuel gas high-speed electromagnetic valve for car |
| CN202338431U (en) * | 2011-11-09 | 2012-07-18 | 石旻磊 | Direct-acting gas nozzle for use of gas automobile |
| CN103306857A (en) * | 2012-03-13 | 2013-09-18 | 上海依相燃气设备有限公司 | CNG/LPG (compressed natural gas/liquefied petroleum gas) fuel gas spray nozzle |
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| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20210507 |