CN113944574B - Gas injection valve of marine diesel engine - Google Patents
Gas injection valve of marine diesel engine Download PDFInfo
- Publication number
- CN113944574B CN113944574B CN202111286229.2A CN202111286229A CN113944574B CN 113944574 B CN113944574 B CN 113944574B CN 202111286229 A CN202111286229 A CN 202111286229A CN 113944574 B CN113944574 B CN 113944574B
- Authority
- CN
- China
- Prior art keywords
- valve
- gas
- valve rod
- oil way
- oil
- 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
- 238000002347 injection Methods 0.000 title claims abstract description 44
- 239000007924 injection Substances 0.000 title claims abstract description 44
- 239000007789 gas Substances 0.000 claims abstract description 98
- 239000003921 oil Substances 0.000 claims abstract description 45
- 239000010720 hydraulic oil Substances 0.000 claims abstract description 27
- 238000005461 lubrication Methods 0.000 claims abstract description 10
- 238000007789 sealing Methods 0.000 claims abstract description 7
- PMVSDNDAUGGCCE-TYYBGVCCSA-L Ferrous fumarate Chemical compound [Fe+2].[O-]C(=O)\C=C\C([O-])=O PMVSDNDAUGGCCE-TYYBGVCCSA-L 0.000 claims description 10
- 239000002737 fuel gas Substances 0.000 claims description 10
- 238000007599 discharging Methods 0.000 claims description 3
- 230000006835 compression Effects 0.000 claims 1
- 238000007906 compression Methods 0.000 claims 1
- 238000004880 explosion Methods 0.000 abstract description 5
- 239000010763 heavy fuel oil Substances 0.000 abstract 1
- 230000001050 lubricating effect Effects 0.000 abstract 1
- 238000009434 installation Methods 0.000 description 7
- 238000005507 spraying Methods 0.000 description 7
- 230000000694 effects Effects 0.000 description 5
- 239000007788 liquid Substances 0.000 description 3
- 239000000446 fuel Substances 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
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
- 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
- F02M21/0263—Inwardly opening single or multi nozzle valves, e.g. needle valves
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01M—LUBRICATING OF MACHINES OR ENGINES IN GENERAL; LUBRICATING INTERNAL COMBUSTION ENGINES; CRANKCASE VENTILATING
- F01M9/00—Lubrication means having pertinent characteristics not provided for in, or of interest apart from, groups F01M1/00 - F01M7/00
-
- 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
- F02M21/0281—Adapters, sockets or the like to mount injection valves onto engines; Fuel guiding passages between injectors and the air intake system or the combustion chamber
-
- 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)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Combustion & Propulsion (AREA)
- Fuel-Injection Apparatus (AREA)
- Lift Valve (AREA)
Abstract
The gas jet valve of the marine diesel engine comprises a valve body, a valve rod and a jet port, wherein a spring is arranged between the valve body and the upper part of the valve rod to push the valve rod to press the jet port, a first oil way and a third oil way are arranged in the valve body, the first oil way leads to the valve rod below a spring ring and is used for injecting high-pressure hydraulic oil to push the valve rod away from the jet port, so that the gas jet valve is quickly opened, the third oil way leads to a gap around the jet port and is used for injecting hydraulic oil into the gap to play a sealing role, and a second oil way and a lubrication channel are arranged in the valve rod and are used for introducing hydraulic oil from the outside to be conveyed to the surface of the valve rod for lubrication, so that the gas jet valve is quickly opened and closed; hydraulic oil enters the first oil way, the second oil way and the third oil way from the top of the gas injection valve, and the opening and closing of the gas injection port are controlled through the valve rod, so that quantitative and timed gas injection to the cylinder is realized. The invention improves the internal lubricating property, improves the sealing property, avoids high-temperature explosion caused by residual fuel gas and ensures the safety of products.
Description
Technical Field
The invention relates to a component of a marine dual-fuel diesel engine, in particular to a gas injection valve of the marine diesel engine, and belongs to the technical field of diesel engines.
Background
When the marine dual-fuel diesel engine burns, high-pressure fuel gas needs to be sprayed into the cylinder body from the cylinder cover, in order to ensure the full safety of the in-cylinder combustion, the gas spraying amount and the gas spraying time of each time are strictly controlled, and the gas spraying valve needs to be capable of being rapidly switched on and off and ensure that no fuel gas leaks in the closed state. In order to achieve the above object, the structure of the gas injection valve must sufficiently consider sealing and rapid reaction, and at the same time, ensure that the injected gas and the burned mixed gas do not remain in the gap of the gas injection valve, so as to avoid explosion caused by the combustible gas or mixing into the clean gas from the gas pipeline.
Disclosure of Invention
The invention aims to solve the problems in the prior art, and provides a gas injection valve of a marine diesel engine, which improves the internal lubrication performance, realizes the quick switching of the gas injection valve, utilizes hydraulic oil to seal oil and prevents high-temperature explosion caused by gas residues.
Based on the above purpose, the technical scheme provided by the invention is as follows:
the utility model provides a marine diesel engine's gas fumar valve, installs in the fumar valve mounting hole of cylinder head, is equipped with a plurality of annular and gas pipeline hole in this fumar valve mounting hole, and this gas fumar valve is including valve body, valve rod and fumar, its characterized in that: a spring in a compressed state is arranged between the valve body and the upper part of the valve rod, the spring pushes the valve rod to press the air nozzle to be in a tight state, a first oil way and a third oil way are arranged in the valve body, the first oil way leads to the valve rod below the spring ring and is used for injecting high-pressure hydraulic oil to push the valve rod away from the air nozzle so as to realize quick opening of the gas air nozzle, the third oil way leads to a gap around the air nozzle and is used for injecting hydraulic oil into the gap so as to play a sealing role and prevent gas from entering the gap area, a second oil way which is mutually communicated with the surface of the valve rod and a lubrication channel which is communicated with the surface of the valve rod are arranged in the valve rod, so that the surface of the valve rod is lubricated to realize smooth movement of the valve rod, and the quick opening and closing of the gas air nozzle are realized;
hydraulic oil enters the first oil way, the second oil way and the third oil way from the top of the gas injection valve, and the opening and closing of the gas injection port are controlled through the valve rod, so that quantitative and timed gas injection to the cylinder is realized.
As a further improvement, an annular chamber is arranged in the valve body near the air nozzle, a fuel gas inlet communicated with the annular chamber is arranged outside the valve body, and the fuel gas inlet is close to a fuel gas pipeline hole of the air nozzle mounting hole so as to shrink the fuel gas stroke and reduce the air pressure loss.
As a further improvement, a hydraulic oil outlet is arranged at the upper part of the valve body, and is communicated with the first oil way and used for discharging return oil in the gas injection valve.
As a further improvement, the outer wall of the gas injection valve is in close contact with each annular groove on the inner wall of the gas injection valve mounting hole.
Compared with the prior art, the invention achieves the following effects:
1. hydraulic oil is injected into a gap space near the gas nozzle, so that the effect of oil-liquid sealing is achieved, and the danger of high-temperature explosion caused by gas entering and residual in the valve body is avoided, thereby improving the safety performance of the gas injection valve;
2. an oil way is arranged in the valve rod, so that hydraulic oil can be introduced from the outside and conveyed to the surface of the valve rod for lubrication, thereby improving the lubrication effect and realizing the quick opening and closing of the gas injection valve;
3. after the gas jet valve is installed in the installation hole of the cylinder cover, the gas jet valve is closely contacted with each ring groove in the hole, and the ring grooves are filled with hydraulic oil to form a liquid seal, so that the installation tightness of the gas jet valve is improved.
Drawings
Fig. 1 is a cross-sectional view of the present invention.
Fig. 2 is a left side view of fig. 1.
FIG. 3 is a state diagram of the gas injection valve opening the gas injection.
Fig. 4 is a schematic view of the installation of the present invention.
In the drawing the view of the figure,
01-cylinder cover, 02-air injection valve mounting hole, 03-gas pipeline hole, 04-ring groove, 1-valve body, 2-valve rod, 3-spring, 4-air injection port, 5-annular chamber, 6-lubrication channel, 7-gas inlet, 8-hydraulic oil outlet, 9-, a-first oil path, b-second oil path and c-third oil path.
Detailed Description
The present invention is described in detail below with reference to the drawings and the specific embodiments, but the following embodiments are not intended to limit the scope of the present invention, and all equivalent changes and modifications made according to the content of the present specification fall within the technical scope of the present application.
Referring to fig. 4, the gas injection valve of the present invention is installed in an injection valve installation hole 02 of a cylinder head 01 of a marine diesel engine, and a plurality of ring grooves 04 and gas pipeline holes 03 are arranged in the injection valve installation hole 02.
Referring to fig. 1, the gas injection valve comprises a valve body 1, a valve rod 2 and an injection port 4. A spring 3 in a compressed state is arranged between the valve body 1 and the upper part of the valve rod 2, the spring 3 which is required to be relaxed pushes the valve rod 2 to tightly press the air nozzle 4, so that the valve is in a tight state, and the tightness of the valve during closing is ensured by grinding the contact surface between the air nozzle 4 and the valve rod 1.
Referring to fig. 1 and 2, a first oil path a and a third oil path c are disposed in the valve body 1. The first oil way a is opened at the top of the gas injection valve, is communicated with the valve rod 2 below the spring ring and is used for injecting high-pressure hydraulic oil to push the valve rod 2 away from the gas injection port 4, and the gas injection valve is opened, so that the gas injection valve is opened quickly, and gas is injected into the cylinder from the gas injection valve as shown in fig. 3.
The third oil way c is opened at the top of the gas spraying valve, is communicated with an annular gap between the gas spraying valve around the gas spraying port 4 and the cylinder cover 01, and is used for injecting hydraulic oil into the gap, so that the gap is filled with the hydraulic oil, a sealing effect is achieved, gas sprayed out of the gas spraying port 4 is prevented from entering the gap, meanwhile, the gas cannot remain in the gap, and the danger of explosion caused at high temperature is prevented.
The inside of valve rod 2 is equipped with second oil circuit b and lubrication channel 6, and this second oil circuit b opening is in the top of gas fumarole valve, lubrication channel 6 intercommunication second oil circuit b with the surface of valve rod 2 is used for introducing hydraulic oil from the outside and carries to the surface of valve rod 2, lubricates the surface of valve rod 2 to realize this valve rod 2's motion is smooth, can freely reciprocate, reaches the quick switching of gas fumarole valve.
In order to return or discharge the hydraulic oil in the gas injection valve, referring to fig. 2, a hydraulic oil outlet 8 is disposed at the upper portion of the valve body 1, and the hydraulic oil outlet 8 is communicated with the first oil path a and is used for discharging the return oil in the gas injection valve.
Referring to fig. 1, an annular chamber 5 is disposed inside the valve body 1 near the gas nozzle 4, a gas inlet 7 is disposed outside the valve body and is communicated with the annular chamber 5, and after the gas nozzle is installed, the gas inlet 7 is close to a gas pipe hole 03 of the gas nozzle mounting hole 02, as shown in fig. 4, so as to reduce a gas storage area and a gas injection stroke, reduce pressure loss of gas injection, and improve safety.
After the gas jet valve is installed in the cylinder cover 01, the outer wall of the gas jet valve is closely contacted with each annular groove 04 on the inner wall of the gas jet valve installation hole 02, and each pipeline in the cylinder cover 01 is communicated, so that different effects are achieved, and the annular grooves 04 are filled with hydraulic oil to form a liquid seal, so that the installation tightness of the gas jet valve is improved.
The working process of the invention is as follows:
after the gas jet valve works normally, gas is fed into the gas jet valve through the gas pipeline hole 03 and the gas inlet 7, and referring to fig. 1, 3 and 4, three paths of hydraulic oil enter the first oil path a, the second oil path b and the third oil path c from the top of the gas jet valve, and the valve rod 2 controls the gas jet port 4 to be opened and closed, so that quantitative and timed gas injection to the cylinder is realized.
The scope of protection claimed in the present invention is not limited to the embodiments described above, but it should also include other variants and alternatives obvious to the present invention.
Claims (2)
1. The utility model provides a marine diesel engine's gas fumar valve, installs in the fumar valve mounting hole of cylinder head, is equipped with a plurality of annular and gas pipeline hole in this fumar valve mounting hole, and this gas fumar valve is including valve body, valve rod and fumar, its characterized in that: a spring in a compression state is arranged between the valve body and the upper part of the valve rod, the spring pushes the valve rod to press the air nozzle to be in a tight state, a first oil way and a third oil way are arranged in the valve body, the first oil way leads to the valve rod below the spring and is used for injecting high-pressure hydraulic oil to push the valve rod away from the air nozzle so as to realize quick opening of the gas air nozzle, the third oil way leads to a gap around the air nozzle and is used for injecting hydraulic oil into the gap to play a sealing role so as to prevent gas from entering the gap area, a second oil way which is mutually communicated and a lubrication channel which is communicated with the surface of the valve rod are arranged in the valve rod and are used for introducing hydraulic oil from outside to be conveyed to the surface of the valve rod so as to lubricate the surface of the valve rod, so that the smooth movement of the valve rod is realized and the quick opening and closing of the gas air nozzle are realized;
an annular chamber is arranged in the valve body near the air jet, a fuel gas inlet communicated with the annular chamber is arranged outside the valve body, and the fuel gas inlet is close to a fuel gas pipeline hole of the air jet valve mounting hole so as to shrink the end fuel gas stroke and reduce the air pressure loss;
the outer wall of the gas injection valve is tightly contacted with each annular groove on the inner wall of the gas injection valve mounting hole;
hydraulic oil enters the first oil way, the second oil way and the third oil way from the top of the gas injection valve, and the opening and closing of the gas injection port are controlled through the valve rod, so that quantitative and timed gas injection to the cylinder is realized.
2. The gas injection valve of a marine diesel engine of claim 1, wherein: the upper part of the valve body is provided with a hydraulic oil outlet which is communicated with the first oil way and is used for discharging return oil in the gas injection valve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111286229.2A CN113944574B (en) | 2021-11-02 | 2021-11-02 | Gas injection valve of marine diesel engine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111286229.2A CN113944574B (en) | 2021-11-02 | 2021-11-02 | Gas injection valve of marine diesel engine |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN113944574A CN113944574A (en) | 2022-01-18 |
| CN113944574B true CN113944574B (en) | 2024-02-02 |
Family
ID=79337339
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111286229.2A Active CN113944574B (en) | 2021-11-02 | 2021-11-02 | Gas injection valve of marine diesel engine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN113944574B (en) |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0546985A1 (en) * | 1991-12-10 | 1993-06-16 | New Sulzer Diesel Ag | Fuel injection valve for a reciprocating internal combustion engine optionally operating on diesel oil or on a gaseous fuel |
| JPH11200953A (en) * | 1998-01-19 | 1999-07-27 | Nissan Motor Co Ltd | Injector of cng engine |
| US5996558A (en) * | 1997-05-09 | 1999-12-07 | Westport Research Inc. | Hydraulically actuated gaseous or dual fuel injector |
| JP2012031825A (en) * | 2010-08-02 | 2012-02-16 | Goto Ikueikai | Sealing structure and gas injection valve |
| CN106678426A (en) * | 2017-03-25 | 2017-05-17 | 潍坊力创电子科技有限公司 | Hydraulically powered gas injection valve |
| CN107614862A (en) * | 2015-03-13 | 2018-01-19 | 西港能源有限公司 | Hydraulic actuation gaseous fuel injector |
| CN111828203A (en) * | 2020-06-28 | 2020-10-27 | 上海中船三井造船柴油机有限公司 | Gas jet valve of low-speed machine for ship |
-
2021
- 2021-11-02 CN CN202111286229.2A patent/CN113944574B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0546985A1 (en) * | 1991-12-10 | 1993-06-16 | New Sulzer Diesel Ag | Fuel injection valve for a reciprocating internal combustion engine optionally operating on diesel oil or on a gaseous fuel |
| US5996558A (en) * | 1997-05-09 | 1999-12-07 | Westport Research Inc. | Hydraulically actuated gaseous or dual fuel injector |
| JPH11200953A (en) * | 1998-01-19 | 1999-07-27 | Nissan Motor Co Ltd | Injector of cng engine |
| JP2012031825A (en) * | 2010-08-02 | 2012-02-16 | Goto Ikueikai | Sealing structure and gas injection valve |
| CN107614862A (en) * | 2015-03-13 | 2018-01-19 | 西港能源有限公司 | Hydraulic actuation gaseous fuel injector |
| CN106678426A (en) * | 2017-03-25 | 2017-05-17 | 潍坊力创电子科技有限公司 | Hydraulically powered gas injection valve |
| CN111828203A (en) * | 2020-06-28 | 2020-10-27 | 上海中船三井造船柴油机有限公司 | Gas jet valve of low-speed machine for ship |
Also Published As
| Publication number | Publication date |
|---|---|
| CN113944574A (en) | 2022-01-18 |
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