CN207437219U - A kind of marine engine air inlet pipeline - Google Patents
A kind of marine engine air inlet pipeline Download PDFInfo
- Publication number
- CN207437219U CN207437219U CN201721418801.5U CN201721418801U CN207437219U CN 207437219 U CN207437219 U CN 207437219U CN 201721418801 U CN201721418801 U CN 201721418801U CN 207437219 U CN207437219 U CN 207437219U
- Authority
- CN
- China
- Prior art keywords
- natural gas
- air inlet
- manifold
- hole
- pipe
- 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.)
- Active
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
- Output Control And Ontrol Of Special Type Engine (AREA)
Abstract
The utility model belongs to gas engine technical field, is related to a kind of marine engine air inlet pipeline.A kind of marine engine air inlet pipeline proposed includes natural gas air inlet pipe, air inlet manifold；Air inlet manifold is circular channel；Air inlet manifold one sides are disposed with several groups to supply the inlet manifold of gaseous mixture for each cylinder of engine；Each inlet manifold is connected by casing with corresponding natural gas air inlet pipe；Natural gas air inlet pipe is uniformly distributed multiple on natural gas manifold；Nozzle is installed in casing；The head of nozzle is connected with air inlet manifold；The top of nozzle head has the through hole I being connected with air inlet manifold；Also there is the through hole II for natural gas injection on the spherical surface of nozzle head；The tail end of nozzle is connected by the injection valve being arranged in valve block with natural gas air inlet pipe.The utility model improves power, economy, emission performance and the service life of engine.
Description
Technology leads city
The utility model belongs to gas engine technical field, is related to a kind of marine engine air inlet pipeline.
Background technology
In recent years, with the successive development of the domestic projects such as " the Changjiang river environlnental logistics Innovation project " and " gasification the Changjiang river ", day
Right gas engine is further developed in the application of ship domain；Marine engine requirement engine aspirating system response it is rapid and
It is safe, and existing pre-mixed charge system makes engine response poor, Operational Figure Of Merit is low, can not meet requirement.It adopts
With inlet manifold multi-point injection technology, engine transient response is fast, and combustion gas control accuracy is high, but existing multi-point injection air intake structure
Using single-walled pipe, class boat engine and high requirement of explosion proof place requirement can not be met;And mounting structure for pipeline is unfavorable
It is uniformly mixed in combustion gas, air, seriously affects the burning and discharge of engine.
In the prior art, fuel gas injection mixing arrangement described in 104121116 B of patent CN is by combustion gas rail, air inlet pipe, single-point
Injection valve and mixing arrangement composition, it is complicated, engine modification is big.Air intake structure described in 205422983 U of patent CN is
Automobile-used, the injection of natural gas single hole is unfavorable for natural gas and is mixed with air；Air inlet pipe described in 104295418 A of patent CN be only into
Gas manifold and exhaust gas nozzle structure, exhaust gas nozzle stretch into inlet cylinder, and combustion gas is injected directly into each cylinder air flue, is unfavorable for combustion gas
With the mixing of air；Above-mentioned patent fuel gas pipeline is single-walled pipe, can not meet class boat engine and high requirement of explosion proof field
Institute's requirement；And fuel gas ejecting device how far causes engine response poor from air intake duct or the injection of injection apparatus single hole is unfavorable
In being sufficiently mixed for combustion gas and air, combustibility is poor.
Utility model content
To solve the above-mentioned problems, the utility model proposes a kind of marine engine air inlet pipelines.
The utility model completes its utility model task by the following technical programs：
A kind of marine engine air inlet pipeline, the air inlet pipeline include natural gas air inlet pipe, air inlet manifold；
The air inlet manifold is circular channel, and one end air inlet, the other end is using explosion-proof valve closure；The air inlet manifold
One side is disposed with several groups to supply the inlet manifold of gaseous mixture for each cylinder of engine；Each inlet manifold passes through casing
It is connected with corresponding natural gas air inlet pipe；The natural gas air inlet pipe is more to be uniformly distributed multiple on natural gas manifold
A natural gas air inlet pipe supplies fuel for each cylinder of natural gas engine；Nozzle is installed in the casing；Described
Nozzle is in hemispherical circular sleeve for head, and the head of the nozzle is connected with air inlet manifold；The top of nozzle head
End is with the through hole I being connected with air inlet manifold；Also there is the through hole for natural gas injection on the spherical surface of nozzle head
Ⅱ；The through hole II is multiple to be uniformly distributed along the circumference；Multiple through holes II are connected with the cavity of casing, multiple described
Through hole II can be formed and disturb with the air in inlet manifold in natural gas injection, accelerate the mixing of natural gas and air；Institute
The tail end for stating nozzle is connected by the injection valve being arranged in valve block with natural gas air inlet pipe；The center of the valve block, which has, to be used
To install the through hole of injection valve；Through hole described in valve block center is cylindrical hole I, conical bore I, the cylinder being from top to bottom sequentially communicated
Hole III, conical bore II and cylindrical hole III；The valve block side has the cylindrical hole II with the perforation of valve block central through hole；The valve
Block is connected by cylindrical hole II with natural gas air inlet pipe；The both ends of the valve block pass through lower sealing flange, upper Sealing Method respectively
Orchid sealing.
The natural gas air inlet pipe is by branch pipe is formed in branch pipe outside the natural gas being coaxially disposed, natural gas double-walled
Pipe；It is higher than the inert gas of gas pressure in the outer branch pipe of the natural gas, natural gas between branch pipe filled with pressure, is formed
Airtight collar；The outer branch pipe of the natural gas is connected firmly by connecting flange and valve block；Branch pipe passes through cylinder in the natural gas
Hole II is connected with valve block central through hole, and natural gas is provided for injection valve.
The natural gas manifold is made of manifold in manifold outside the natural gas being coaxially disposed and natural gas；The natural gas
The connection that manifold passes through main pipe and natural-gas transfer pipeline outside main pipe in natural gas, natural gas in outer manifold, natural gas.
When engine works, air enters inlet manifold through inlet manifold, and natural gas enters natural gas by main pipe in air inlet
Interior manifold, then enter injection valve through branch pipe in air inlet；Switch of the valve control according to engine timing signal control valve door is sprayed,
When controller receives open signal, injection valve is opened, natural gas enters nozzle through valve block passage, and natural gas is from the circular hole of nozzle
Place sprays, and disturbance is generated in inlet manifold, and cylinder is entered after being sufficiently mixed with air therein；The injection valve presses off for height
Powered-down magnet valve, switch is sensitive, control is accurate, it can be achieved that the supply at regular time and quantity of natural gas；The injection valve is porous structure, more
Hole injection natural gas forms disturbance in inlet manifold, strengthens its mixing with air, improves gaseous mixture uniformity.
The utility model proposes a kind of marine engine air inlet pipeline, it is uniform that porous fuel injection valve improves gaseous mixture
Property, fuel gas supply at regular time and quantity improves combustion gas control accuracy, reduces even zero escape of combustion gas escapement ratio to greatest extent,
The transient response of engine is improved simultaneously；The porous injection of novel gas nozzle arrangements makes in natural gas and inlet manifold
Air forms disturbance, further improves the troubled water of combustion gas and air, improves power, economy, the emission performance of engine
Energy and service life.
Description of the drawings
Fig. 1 is the front view of the utility model.
Fig. 2 is the left view of Fig. 1.
Fig. 3 is the top view of Fig. 1.
Fig. 4 is the structure chart of nozzle.
Fig. 5 is the sectional view of Fig. 4.
Fig. 6 is the front view of valve block.
Fig. 7 is the sectional view of Fig. 6.
In figure：1st, air inlet manifold；2nd, inlet manifold；3rd, nozzle；4th, lower sealing flange；5th, valve block；6th, injection valve；7、
Upper sealing flange；8th, connecting flange；9th, the outer branch pipe of natural gas；10th, branch pipe in natural gas；11st, the outer manifold of natural gas；12nd, it is natural
Manifold in gas；13rd, main pipe in natural gas；14th, the outer main pipe of natural gas；15th, flange is coordinated；16th, welded flange；17th, cylindrical hole I；
18th, cylindrical hole II；19th, conical bore I；20th, conical bore II；21 cylindrical holes III；22nd, cylindrical hole IV；23rd, through hole I；24th, through hole II.
Specific embodiment
The utility model is illustrated with reference to attached drawing and specific implementation case：
As shown in Figure 1, Figure 2, Figure 3 shows, a kind of marine engine air inlet pipeline, the air inlet pipeline include natural gas into
Tracheae, air inlet manifold；The air inlet manifold 1 is circular channel, and one end air inlet, the other end is using explosion-proof jam pot cover
It closes；1 one sides of air inlet manifold are disposed with several groups to supply the inlet manifold 2 of gaseous mixture for each cylinder of engine；
Each inlet manifold 2 is connected by casing with corresponding natural gas air inlet pipe；The natural gas air inlet pipe be
Uniformly distributed multiple on natural gas manifold, multiple natural gas air inlet pipes supply fuel for each cylinder of natural gas engine；It is described
Casing in nozzle 3 is installed；With reference to Fig. 4, Fig. 5, the nozzle 3 is head in hemispherical circular sleeve, the nozzle 3
Head be connected with air inlet manifold；The top on 2 head of nozzle has the through hole I 23 being connected with air inlet manifold；
Also there is the through hole II 24 for natural gas injection on the spherical surface of nozzle head；The through hole II 24 is more to be uniformly distributed along the circumference
It is a；Multiple through holes II 24 are connected with the cavity of casing, it is multiple described in through holes II 24 can be in natural gas injection
Air in inlet manifold forms disturbance, accelerates the mixing of natural gas and air；Multiple through holes also increase circulation area, ensure
The flow of natural gas；The tail end of the nozzle 3 is connected by the injection valve 6 being arranged in valve block 5 with natural gas air inlet pipe；
The center of the valve block 5 has the through hole for installing injection valve；Through hole described in valve block center is from top to bottom to be sequentially communicated
Cylindrical hole I 17, conical bore I 19, cylindrical hole III 22, conical bore II 20 and cylindrical hole III 21；The valve block side has and valve
The cylindrical hole II 18 of block central through hole perforation；The valve block 5 is connected by cylindrical hole II 18 with natural gas air inlet pipe；It is described
The both ends of valve block 5 are sealed respectively by lower sealing flange 4, upper sealing flange 7.
The natural gas air inlet pipe is by branch pipe is formed in branch pipe outside the natural gas being coaxially disposed, natural gas double-walled
Pipe；It is higher than the inert gas of gas pressure in the outer branch pipe of the natural gas, natural gas between branch pipe filled with pressure, is formed
Airtight collar；The outer branch pipe of the natural gas is connected firmly by connecting flange and valve block；Branch pipe passes through cylinder in the natural gas
Hole II is connected with valve block central through hole, and natural gas is provided for injection valve.
The natural gas manifold is made of manifold 10 in manifold 9 outside the natural gas being coaxially disposed and natural gas；The day
Manifold 10 passes through main pipe 14 outside main pipe in natural gas 13, natural gas and natural-gas transfer pipeline in the outer manifold 9 of right gas, natural gas
Connection.
When engine works, air enters inlet manifold 2 through inlet manifold 1, and natural gas is entered by main pipe in natural gas 13
Manifold 12 in natural gas, then enter injection valve 6 through branch pipe in natural gas 10.Valve control is sprayed according to engine timing signal control
The switch of valve processed, when controller receives open signal, opening injection valve, natural gas enters nozzle 3, day through 5 passage of valve block
Right gas sprays at the circular hole of nozzle 3, and disturbance is generated in inlet manifold 2, and cylinder is entered after being sufficiently mixed with air therein.
The injection valve 6 is high-voltage switch gear solenoid valve, and switch is sensitive, control is accurate, it can be achieved that the supply at regular time and quantity of natural gas.It is described
Injection valve 6 is porous structure, and porous injection natural gas forms disturbance in inlet manifold 2, strengthens the mixing of remaining air, improves
Gaseous mixture uniformity.
It is above-mentioned although specific embodiments of the present invention are described with reference to the accompanying drawings, but not to this practicality newly
The limitation of type protection domain, those skilled in the art should understand that, on the basis of the technical solution of the utility model, ability
Field technique personnel need not make the creative labor the various modifications or changes that can be made still in the protection model of the utility model
Within enclosing.
Claims (3)
1. a kind of marine engine air inlet pipeline, it is characterised in that：The air inlet pipeline includes natural gas air inlet pipe, air
Inlet manifold；The air inlet manifold is circular channel, and one end air inlet, the other end is using explosion-proof valve closure；The sky
Gas inlet manifold one side is disposed with several groups to supply the inlet manifold of gaseous mixture for each cylinder of engine；Each air inlet discrimination
Pipe is connected by casing with corresponding natural gas air inlet pipe；The natural gas air inlet pipe is uniformly distributed on natural gas manifold
It is multiple；Nozzle is installed in the casing；The nozzle is head in hemispherical circular sleeve, the head of the nozzle
Portion is connected with air inlet manifold；The top of nozzle head has the through hole I being connected with air inlet manifold；Nozzle head
Spherical surface on also have for natural gas injection through hole II；The through hole II is multiple to be uniformly distributed along the circumference；It is multiple described
Through hole II be connected with the cavity of casing；The tail end of the nozzle passes through the injection valve being arranged in valve block and natural gas air inlet
Pipe is connected；The center of the valve block has the through hole for installing injection valve；Through hole described in valve block center is from top to bottom
Cylindrical hole I, conical bore I, cylindrical hole III, conical bore II and the cylindrical hole III being sequentially communicated；The valve block side has and valve block
The cylindrical hole II of central through hole perforation；The valve block is connected by cylindrical hole II with natural gas air inlet pipe；The valve block
Both ends are sealed respectively by lower sealing flange, upper sealing flange.
2. a kind of marine engine air inlet pipeline as described in claim 1, it is characterised in that：The natural gas air inlet pipe is
The double-wall pipe being made of branch pipe in branch pipe outside the natural gas being coaxially disposed, natural gas；In the outer branch pipe of the natural gas, natural gas
It is higher than the inert gas of gas pressure between branch pipe filled with pressure, forms airtight collar；The outer branch pipe of the natural gas leads to
Connecting flange is crossed to connect firmly with valve block；Branch pipe is connected by cylindrical hole II with valve block central through hole in the natural gas.
3. a kind of marine engine air inlet pipeline as described in claim 1, it is characterised in that：The natural gas manifold is by coaxial
Manifold is formed in the outer manifold of the natural gas of setting and natural gas；Manifold passes through natural in the outer manifold of the natural gas, natural gas
The connection of the outer main pipe of main pipe, natural gas and natural-gas transfer pipeline in gas.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721418801.5U CN207437219U (en) | 2017-10-31 | 2017-10-31 | A kind of marine engine air inlet pipeline |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721418801.5U CN207437219U (en) | 2017-10-31 | 2017-10-31 | A kind of marine engine air inlet pipeline |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207437219U true CN207437219U (en) | 2018-06-01 |
Family
ID=62291418
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721418801.5U Active CN207437219U (en) | 2017-10-31 | 2017-10-31 | A kind of marine engine air inlet pipeline |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207437219U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107654312A (en) * | 2017-10-31 | 2018-02-02 | 河南柴油机重工有限责任公司 | A kind of marine engine air inlet pipeline |
| CN109404167A (en) * | 2018-12-29 | 2019-03-01 | 重庆红江机械有限责任公司 | Fuel gas injection valve and the gas or dual fuel engine for using it |
| CN112502863A (en) * | 2020-12-18 | 2021-03-16 | 中船动力有限公司 | Double-wall connecting pipe for fuel gas injection of dual-fuel diesel engine |
-
2017
- 2017-10-31 CN CN201721418801.5U patent/CN207437219U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107654312A (en) * | 2017-10-31 | 2018-02-02 | 河南柴油机重工有限责任公司 | A kind of marine engine air inlet pipeline |
| CN109404167A (en) * | 2018-12-29 | 2019-03-01 | 重庆红江机械有限责任公司 | Fuel gas injection valve and the gas or dual fuel engine for using it |
| CN109404167B (en) * | 2018-12-29 | 2020-11-24 | 重庆红江机械有限责任公司 | Gas injection valve and gas or dual-fuel engine adopting same |
| CN112502863A (en) * | 2020-12-18 | 2021-03-16 | 中船动力有限公司 | Double-wall connecting pipe for fuel gas injection of dual-fuel diesel engine |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN207437219U (en) | A kind of marine engine air inlet pipeline | |
| CN110318911A (en) | A kind of natural gas engine gas injection apparatus with fountain nozzle arrangements | |
| CN107654312A (en) | A kind of marine engine air inlet pipeline | |
| CN105422256B (en) | A kind of single set fuel feed system suitable for precombustion natural gas engine | |
| CN206458548U (en) | A kind of marine diesel oil LNG dual fuel engines essential safe type gas feeder | |
| CN207145086U (en) | A kind of fuel gas ejecting device | |
| CN201041376Y (en) | Environment-friendly, safe and split combination type alcohol group liquid fuel kitchen range | |
| CN106762236A (en) | A kind of gas/intake manifold of dual-fuel engine eddy flow accelerates mixing arrangement | |
| CN107061061A (en) | A kind of integrated form of mixed admission intersects annular groove gaseous fuel jet mixing device | |
| CN203783760U (en) | Double-layered fuel gas conveying system for multi-point gas inlet dual-fuel engine | |
| CN201909305U (en) | Boiler chimney flue gas preheating boiler water feed device | |
| CN201935215U (en) | Biomass energy mixed fuel igniter | |
| CN201064752Y (en) | Flame projecting showerhead | |
| CN109406094B (en) | Experimental device for simulating microcosmic drag reduction performance of drag reducer in near-wall area | |
| CN203742835U (en) | Fuel feeding and air inlet embedded type assembly of gas engine | |
| CN107387266A (en) | A kind of fuel gas ejecting device | |
| CN204041309U (en) | The multi-point injection suction tude of gas engine | |
| CN202993213U (en) | Energy-saving and environment-friendly heating system for industry | |
| CN207761828U (en) | Gas/dual fuel engine integral type methane air inlet pipe fuel gas ejecting device | |
| CN206986116U (en) | A kind of biogas valve with purification function | |
| CN207094641U (en) | A kind of suitable greatly tolerance internal combustion type torch of multilayer fiery disk | |
| CN208426561U (en) | A kind of pipeline powder explosion suppression system | |
| CN205206943U (en) | Singly overlap fuel supply system suitable for pre -burning cell -type natural gas engine | |
| CN205860009U (en) | A kind of apply axially or the premix burner of radial air input | |
| CN209115223U (en) | The hydrogen track with hydrogen nozzle used on gaseous propellant engine |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |