CN207761829U - The mechanical gas intake valve of middling speed gas/dual fuel engine - Google Patents
The mechanical gas intake valve of middling speed gas/dual fuel engine Download PDFInfo
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- CN207761829U CN207761829U CN201721868218.4U CN201721868218U CN207761829U CN 207761829 U CN207761829 U CN 207761829U CN 201721868218 U CN201721868218 U CN 201721868218U CN 207761829 U CN207761829 U CN 207761829U
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- gas valve
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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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Abstract
A kind of mechanical gas intake valve of middling speed gas/dual fuel engine, is installed in the air inlet pipe of each cylinder of middling speed gas engine or dual fuel engine, which is equipped with the gas inlet for leading to gas inlet passage；The gas inlet valve includes combustion gas valve chest, gas valve, combustion gas valve guide, combustion gas valve spring retainer, combustion gas valve spring, accumulator lower housing and accumulator upper shell；Wherein, combustion gas valve chest is installed in gas inlet passage and forms annular fuel gas chamber with the gas inlet passage, gas valve is installed on by combustion gas valve guide in combustion gas valve chest, the top of combustion gas valve guide is connected with combustion gas valve spring retainer, combustion gas valve spring passes through the valve rod of gas valve to be mounted on combustion gas valve spring retainer, and the top of combustion gas valve spring is connected with accumulator；Combustion gas is entered by annular fuel gas chamber in the cavity of combustion gas valve chest, and under the action of engine crankshaft cam, gas inlet valve is opened according to the rotating speed of engine at the time of specific, and combustion gas enters each cylinder of engine.The utility model is compact-sized, of low cost, and reliability is high, and sealing performance is excellent.
Description
Technical field
The utility model is related to the structures of engine, and in particular to a kind of machine for middling speed gas/dual fuel engine
Tool formula gas inlet valve, belongs to technical field of engines.
Background technology
International community causes the concern of atmosphere pollution subject under discussion long-standing ship.IMO (International Maritime Organization) and MEPC
(Marine Environmental Protection Committee) passes through a series of discussion and demonstration, " prevents ship from atmosphere pollution being caused to advise on May 19th, 2005
Then " i.e. MARPOL73/78 supplemental provisions VI are formally implemented, mainly for the row of NOx, SOx and particulate matter in boat diesel engine emission
It puts and makes limitation.
Regardless of which kind of discharge-reducing method is not all fundamentally greatly decreased and eliminates NOx and the generation of Sox more effects a permanent cure.Mesh
Discharge can not only be greatly reduced as a kind of high-grade fuel in the fuel oil that preceding diesel engine remains unchanged using higher price, LNG, and
Price is also low compared with diesel oil, is considered the excellent alternative fuel of marine diesel always, uses middling speed gas/dual fuel engine
It is increasingly becoming a kind of new selection.
Since gas fuel attribute is different from diesel oil, need to change part of the fuel supply in conventional diesel engine structure
It makes.Gas injector, effect are to provide suitable natural gas to combustion chamber as needed, are middling speed gas/double fuel hairs
An important component in motivation.
The features such as existing fuel gas injection electromagnetic valve has gas flow height, and outlet pressure is steady, and reaction speed is fast, but by
Then component is controlled electronically, it is complicated, therefore functional reliability is affected and parts cost is higher.
Utility model content
The purpose of the utility model is to overcome existing fuel gas injection electromagnetic valve, disadvantage complicated and of high cost, provides
A kind of mechanical gas intake valve of middling speed gas/dual fuel engine, uses modular construction, reaches and be easily installed dimension
Shield, the effect for reducing leakage hidden danger.
The purpose of this utility model is achieved by the following technical solution：
A kind of mechanical gas intake valve of middling speed gas/dual fuel engine, is installed on middling speed gas engine or double
In the air inlet pipe of each cylinder of engine fuel, which is equipped with air inlet, gaseous mixture gas outlet and gas inlet,
The gas inlet leads to gas inlet passage；It is characterized in that：The gas inlet valve includes combustion gas valve chest, gas valve, combustion
Air valve guide sleeve, combustion gas valve spring retainer, combustion gas valve spring, accumulator lower housing and accumulator upper shell；Wherein, combustion gas valve chest is pacified
Loaded on annular fuel gas chamber is formed in the gas inlet passage and with the gas inlet passage, gas valve is by being fixed on the combustion gas valve casing
Combustion gas valve guide in body is installed in the combustion gas valve chest, and the top of the combustion gas valve guide is connected with combustion gas valve spring retainer,
Combustion gas valve spring pass through gas valve valve rod be mounted on the combustion gas valve spring retainer on, the top of the combustion gas valve spring with by accumulator
Accumulator is connected made of lower housing is docked with accumulator upper shell, and accumulator upper shell is provided with hydraulic oil inlet, accumulator
Lower housing is provided with hydraulic oil outlet；Combustion gas is entered by the annular fuel gas chamber in the cavity of combustion gas valve chest, in engine
Under the action of crankshaft cam, the gas inlet valve is opened according to the rotating speed of engine at the time of specific, and combustion gas passes through the combustion
Gas intake valve enters each cylinder of engine.
It is sealed using twice combustion gas valve chest O-ring seal between the combustion gas valve chest and gas inlet passage.
The lower part of the combustion gas valve chest be equipped with combustion gas valve chest gas outlet, and periphery one circle be evenly distributed with it is more
A combustion gas valve chest gas inlet, the gas valve are butted on the combustion gas valve chest gas outlet.
It is sealed using combustion gas valve rod O-ring seal between the gas valve and combustion gas valve guide.
The combustion gas valve chest is cast member, and the gas valve and combustion gas valve guide are forging, and the accumulator is weldering
Fitting.
The advantage of the utility model is：It is extremely compact using modular construction, pass through accumulator and combustion gas valve spring
Synergy, can be according to the start-up time and unlatching size of the load adjustment gas inlet valve of engine, and response speed is very fast,
Sealing performance is excellent, securely and reliably.
Description of the drawings
Fig. 1 is the stereogram of the utility model.
Fig. 2 is the sectional view of the utility model.
Fig. 3 is the installation diagram of the utility model.
Fig. 4 is the installation sectional view of Fig. 3.
In figure,
1 air inlet pipe, 1a air inlets, 1b gaseous mixtures gas outlet, 1c gas inlets, the channels 1d, 2 combustion gas valve chests,
2a combustion gas valve chest gas inlets, 2b combustion gas valve chest gas outlets, 2c gas valve shell bores, 3 combustion gas valve springs
Seat, 4 combustion gas valve guides, 5 combustion gas valve springs, 6 accumulator lower housings, 6a hydraulic oil outlets, 7 accumulator upper shells, 7a hydraulic oil
Import, 8 gas valves, 9 combustion gas valve rod O-ring seals, 10 combustion gas valve chest O-ring seals, 11 combustion gas valve chest O-ring seals,
12 gaskets, A1 free-air diffusers, A2 gas inlet passages.
Specific implementation mode
The utility model is described in more detail with reference to the accompanying drawings and examples.
Fig. 3 and Fig. 4 are please referred to, the middling speed gas/dual fuel engine mechanical gas intake valve integrally uses
Bolt is fixedly mounted in the air inlet pipe 1 of each cylinder of middling speed gas engine or dual fuel engine, which is equipped with sky
Gas air inlet 1a, gaseous mixture gas outlet 1b and gas inlet 1c, between the air inlet 1a and gaseous mixture gas outlet 1b
Lead to gas inlet passage A2 for free-air diffuser A1, the gas inlet 1c, gas inlet passage A2 passes through channel 1d and institute
State free-air diffuser A1 connections.
In conjunction with refering to fig. 1 and Fig. 2, the mechanical gas intake valve of the middling speed gas/dual fuel engine includes combustion
Air valve shell 2, combustion gas valve spring retainer 3, combustion gas valve guide 4, combustion gas valve spring 5, accumulator lower housing 6,7 and of accumulator upper shell
Gas valve 8.
The combustion gas valve chest 2 is cast member, and the gas inlet passage A2 is installed on by gas valve shell bores 2c
In, it is connected between the combustion gas valve chest 2 and gas inlet passage A2 and close using combustion gas valve chest O-ring seal 10 and 11
Envelope；2 lower part of combustion gas valve chest is equipped with gasket 12 with gas inlet passage A2, which is equipped with combustion gas valve casing
Body fuel gas gas outlet 2b, and periphery is equipped with combustion gas valve chest gas inlet 2a.Gas valve 8 is by being fixed on combustion gas valve chest 2
In combustion gas valve guide 4 be installed in the combustion gas valve chest 2, and be butted on combustion gas valve chest gas outlet 2b；Described
Gas valve 8 and combustion gas valve guide 4 are forging, close using combustion gas valve rod O-ring seal 9 between the gas valve 8 and combustion gas valve guide 4
Envelope.The top of the combustion gas valve guide 4 is connected with combustion gas valve spring retainer 3, and combustion gas valve spring 5 passes through the valve rod of the gas valve 8
On the combustion gas valve spring retainer 3,5 top of combustion gas valve spring is connected with accumulator, which is weldment, by accumulator
Lower housing 6 and accumulator upper shell 7 dock, which is provided with hydraulic oil inlet 7a, accumulator lower housing
6 are provided with hydraulic oil outlet 6a.
Under the action of engine crankshaft cam, the gas inlet valve is beaten according to the rotating speed of engine at the time of specific
It opens, combustion gas enters each cylinder of engine by the gas inlet valve.
The operation principle of the utility model is as follows：
In conjunction with refering to fig. 1 and Fig. 2, there is two-way gas in air inlet pipe 1, air is entered by air inlet 1a all the way, all the way
Combustion gas is entered by gas inlet 1c, and the combustion gas valve chest 2 and gas inlet passage A2 form annular fuel gas inlet chamber, due to combustion
Atmospheric pressure be higher than air pressure, therefore the higher combustion gas of pressure by 2 bottom one of combustion gas valve chest enclose the combustion gas of combustion gas valve chest into
Gas port 2a enters the cavity in combustion gas valve chest 2, is opened in particular moment driving gas valve 8, combustion gas is fired by combustion gas valve chest
Gas gas outlet 2b flows out gas valve 8, referring to Fig. 4, flowing into free-air diffuser A1 through channel 1d, combustion gas and air are mixed mixed
Gas is closed, per cylinder engine is flowed into through gaseous mixture gas outlet 1b.
The unlatching of gas valve 8 is controlled by cam ejection pin mechanism, and the variation of external motive force pushes gas valve 8 to open and close
It closing, hydraulic oil enters accumulator by hydraulic oil inlet 7a, flows out accumulator by hydraulic oil outlet 6a,.By adjusting in accumulator
The pressure of hydraulic oil adjusts the final stress of gas valve in conjunction with the active force of combustion gas valve spring 5, negative so as to adjust different engines
The start-up time of gas valve 8 and unlatching size under lotus.
Claims (5)
1. a kind of mechanical gas intake valve of middling speed gas/dual fuel engine, is installed on middling speed gas engine or double combustions
In the air inlet pipe for expecting each cylinder of engine, which is equipped with air inlet, gaseous mixture gas outlet and gas inlet, institute
It states gas inlet and leads to gas inlet passage；It is characterized in that：The gas inlet valve includes combustion gas valve chest, gas valve, combustion gas
Valve guide, combustion gas valve spring retainer, combustion gas valve spring, accumulator lower housing and accumulator upper shell；Wherein, combustion gas valve chest is installed
Annular fuel gas chamber is formed in the gas inlet passage and with the gas inlet passage, gas valve is by being fixed on the combustion gas valve chest
In combustion gas valve guide be installed in the combustion gas valve chest, the top of the combustion gas valve guide is connected with combustion gas valve spring retainer, combustion
Spring for valve pass through gas valve valve rod be mounted on the combustion gas valve spring retainer on, the top of the combustion gas valve spring with by under accumulator
Accumulator is connected made of shell and accumulator upper shell dock, and accumulator upper shell is provided with hydraulic oil inlet, under accumulator
Shell is provided with hydraulic oil outlet；Combustion gas is entered by the annular fuel gas chamber in the cavity of combustion gas valve chest, in engine song
Under the action of axis cam, the gas inlet valve is opened according to the rotating speed of engine at the time of specific, and combustion gas passes through the combustion gas
Intake valve enters each cylinder of engine.
2. the mechanical gas intake valve of middling speed gas/dual fuel engine according to claim 1, it is characterized in that：Institute
It is sealed using twice combustion gas valve chest O-ring seal between the combustion gas valve chest stated and gas inlet passage.
3. the mechanical gas intake valve of middling speed gas/dual fuel engine according to claim 1, it is characterized in that：Institute
The lower part for the combustion gas valve chest stated is equipped with combustion gas valve chest gas outlet, and the circle of periphery one is evenly distributed with multiple combustion gas valve casings
Body fuel gas air inlet, the gas valve are butted on the combustion gas valve chest gas outlet.
4. the mechanical gas intake valve of middling speed gas/dual fuel engine according to claim 1, it is characterized in that：Institute
It is sealed using combustion gas valve rod O-ring seal between the gas valve stated and combustion gas valve guide.
5. the mechanical gas intake valve of middling speed gas/dual fuel engine according to claim 1, it is characterized in that：Institute
The combustion gas valve chest stated is cast member, and the gas valve and combustion gas valve guide are forging, and the accumulator is weldment.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721868218.4U CN207761829U (en) | 2017-12-28 | 2017-12-28 | The mechanical gas intake valve of middling speed gas/dual fuel engine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721868218.4U CN207761829U (en) | 2017-12-28 | 2017-12-28 | The mechanical gas intake valve of middling speed gas/dual fuel engine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207761829U true CN207761829U (en) | 2018-08-24 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721868218.4U Active CN207761829U (en) | 2017-12-28 | 2017-12-28 | The mechanical gas intake valve of middling speed gas/dual fuel engine |
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| CN (1) | CN207761829U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107989715A (en) * | 2017-12-28 | 2018-05-04 | 中船动力研究院有限公司 | The mechanical gas intake valve of middling speed gas/dual fuel engine |
-
2017
- 2017-12-28 CN CN201721868218.4U patent/CN207761829U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107989715A (en) * | 2017-12-28 | 2018-05-04 | 中船动力研究院有限公司 | The mechanical gas intake valve of middling speed gas/dual fuel engine |
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