CN115711178A - Gaseous fuel engine fuel manifold and engine - Google Patents
Gaseous fuel engine fuel manifold and engine Download PDFInfo
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- CN115711178A CN115711178A CN202211230233.1A CN202211230233A CN115711178A CN 115711178 A CN115711178 A CN 115711178A CN 202211230233 A CN202211230233 A CN 202211230233A CN 115711178 A CN115711178 A CN 115711178A
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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
The invention discloses a gaseous fuel engine fuel manifold and an engine, wherein the fuel manifold comprises: the gas pipeline is internally provided with a circular cavity and is provided with an outlet end and an inlet end along the axial direction; the baffle group is arranged in the gas transmission pipeline and consists of N baffles which are arranged along the axial direction of the gas transmission pipeline, at least two axial through holes are arranged in each baffle, the N baffles divide a cavity in the gas transmission pipeline into N +1 cavities, and N is more than or equal to 1; a plurality of branch pipe outlets which are uniformly distributed on the circumference are arranged on the outlet end of the gas pipeline and are communicated with the gas pipeline; and the at least one fuel inlet is arranged at the inlet end of the gas transmission pipeline. The fuel can be uniformly conveyed to the branch pipe outlets after being gradually stabilized in pressure through the partition plates, and the fluid pressure balance and the fluid flow balance at the branch pipe outlets are guaranteed.
Description
Technical Field
The invention belongs to the technical field of gas turbine engines, and particularly relates to a fuel main pipe of a gaseous fuel engine and the gaseous fuel engine.
Background
With the aggravation of global warming and the reduction of the earth reserves of fossil energy, renewable clean energy capable of replacing the fossil energy is required to be found in each main country, wherein methane, methanol, ethanol, hydrogen and the like become hot spots of the application research of the renewable clean energy.
The various energy sources used by human beings mostly come from the conversion of fuel after combustion, and among them, the energy sources in the fields of aerospace power, ground power stations, ship power and the like mostly use gas turbine power devices. At present, liquid is mainly used as fuel for a gas turbine engine, and a fuel system, particularly a fuel main pipe of the gas turbine engine, cannot be suitable for organizing fuel of gas fuel or liquid fuel with gas characteristics, and can efficiently realize energy conversion.
At present, liquid fuels such as aviation kerosene, light diesel oil, heavy oil and the like are mostly adopted as fuels of a gas turbine engine, and an existing fuel main of the gas turbine engine is a single-pipe fuel main which is generally designed according to the characteristics of the liquid fuels; after the pressure of the fuel oil at the outlets of the branch pipes is stabilized by the large-diameter main pipe, the pressure and the flow of the fuel or the liquid fuel close to the gas characteristic at the outlets of the branch pipes are basically consistent, but under the condition of adopting gas fuel, the single-pipe main pipe cannot ensure the pressure and the flow balance of the fuel or the liquid fuel close to the gas characteristic at the outlets of the branch pipes through simulation and test verification; therefore, the single pipe type fuel manifold is not suitable for a gaseous fuel or a liquid fuel close to gaseous characteristics.
Disclosure of Invention
In order to overcome the defects of the prior art, the invention aims to solve the problem of uneven pressure and flow at the outlet of each branch pipe in the fuel main pipe. In order to achieve the purpose, the invention provides the following technical scheme:
a fuel main pipe of a gaseous fuel engine comprises a gas transmission pipeline, a gas transmission pipeline and a gas distribution pipeline, wherein the gas transmission pipeline is internally provided with an annular cavity and is provided with an outlet end and an inlet end along the axial direction of the gas transmission pipeline;
the baffle group is arranged in the gas transmission pipeline and consists of N baffles which are arranged along the axial direction of the gas transmission pipeline, at least two axial through holes are arranged in each baffle, the N baffles divide a cavity in the gas transmission pipeline into N +1 cavities, and N is more than or equal to 1;
a plurality of branch pipe outlets which are uniformly distributed on the circumference are arranged on the outlet end of the gas pipeline and are communicated with the gas pipeline;
and the at least one fuel inlet is arranged at the inlet end of the gas transmission pipeline.
Further, in two adjacent baffles, the through holes are arranged in a staggered manner.
Further, the closer to the outlet end, the larger the number of through holes in the partition plate.
Further, the number of branch pipe outlets is N 1 The number of through holes in the partition plate closest to the outlet end is N 2 When N is present 1 When it is even, N 1 ＝2N 2 When N is present 1 When it is odd, N 2 Is N 1 The half value of which is rounded to the nearest even number.
Furthermore, the number of through holes in the partition plate closer to the outlet end in two adjacent partition plates is N 3 The number of through holes in the partition plate closer to the inlet end is N 4 When N is present 3 When it is even, N 3 ＝2N 4 When N is present 3 When it is odd, N 4 Is N 3 The value of half is rounded to the nearest even number.
Furthermore, the two adjacent partition plates comprise a partition plate A closer to the outlet end and a partition plate B closer to the inlet end, wherein a through hole A is formed in each partition plate A, and a through hole B is formed in each partition plate B;
two sides of the through hole B are provided with two through holes A adjacent to the through hole B, and the distance between the two through holes A and the distance between the two through holes B are equal.
Further, the partition plate closest to the inlet end has two through holes adjacent to the fuel inlet, and the two through holes are equidistant from the fuel inlet.
Further, the sum of the cross-sectional areas of the fuel inlets and the sum of the cross-sectional areas of all the through holes in a single partition plate are greater than or equal to the sum of the cross-sectional areas of all the branch pipe outlet bores.
Further, the cross-sectional area of any one of the chambers is greater than the sum of the cross-sectional areas of the outlet bores of all of the branch pipes.
Further, the fuel inlet includes: the connecting section is inserted in the gas transmission pipeline and connected with the gas transmission pipeline, and the thread section is communicated with the connecting section and integrally arranged.
Furthermore, two hanging platforms are symmetrically arranged on two sides of the thread section, and hanging platform threads are arranged in the hanging platforms.
An engine, comprising: a casing, a combustion chamber mounted within said casing, a gaseous fuel engine fuel manifold mounted within said casing for providing gaseous fuel to said combustion chamber, a compressor, and a turbine; the gas compressor is connected with the combustion chamber; the turbine is connected with a driving shaft of the compressor.
The invention has the technical effects and advantages that:
according to the invention, the fuel can be uniformly conveyed to the branch pipe outlets after being subjected to step-by-step pressure stabilization through the partition plates, so that the fluid pressure balance and the fluid flow balance at each branch pipe outlet are ensured, the thermal cycle efficiency of the gaseous fuel engine is improved, and a great obstacle of the application of the renewable clean energy in the fields of aerospace power, ground energy, ship power and the like is solved.
Drawings
FIG. 1 is a schematic diagram of a prior art gaseous fuel engine fuel manifold;
FIG. 2 is a schematic diagram of the fuel manifold of a gaseous fuel engine according to the present invention;
FIG. 3 is a cross-sectional view of a fuel manifold of a gaseous fuel engine according to the present invention;
FIG. 4 is a schematic diagram of the fuel inlet tube of the fuel manifold of a gaseous fuel engine according to the present invention;
FIG. 5 is a schematic view of the construction of a first separator plate in the fuel manifold of a gaseous fuel engine according to the present invention;
FIG. 6 is a schematic view of the construction of a second separator plate in the fuel manifold of a gaseous fuel engine according to the present invention;
FIG. 7 is a schematic view of the third separator plate in the fuel manifold of a gaseous fuel engine according to the present invention;
FIG. 8 is a schematic illustration of an engine according to the present invention;
in the figure: 1. an annular main pipeline;
2. a branch pipe outlet;
3. a fuel inlet pipe;
4. a gas pipeline; 401. a first chamber; 402. a second chamber; 403. a third chamber; 404. a fourth chamber;
5. a separator group; 501. a first separator; 5011. a first through hole; 502. a second separator; 5021. a second through hole; 503. a third separator; 5031. a third through hole;
6. a fuel inlet; 601. a connecting section; 602. a threaded segment; 603. hanging a platform; 604. a hanging platform screw hole;
101. a casing; 102. a fuel header pipe; 103. a turbine; 104. a combustion chamber; 105. a compressor is provided.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
In addition, in the present invention, the terms "first," "second," and the like are not intended to imply any order, quantity, or importance, but are merely used to distinguish one element from another, and the terms "upper," "lower," "left," "right," and the like are merely positional relationships in the drawings.
The existing gaseous fuel engine fuel main pipe, as shown in fig. 1, is composed of an annular main pipe 1, 16 branch pipe outlets 2 and two fuel gas inlet pipes 3, the fuel is fed into the annular main pipe 1 through the fuel gas inlet pipes 3, and then the fuel is uniformly fed out through a plurality of branch pipe outlets 2, however, the actual situation is that the higher the gas pressure of the branch pipe outlets 2 closer to the fuel gas inlet pipes 3 is, the lower the gas pressure of the branch pipe outlets 2 farther from the fuel gas inlet pipes 3 is, and therefore, the pressure and flow rate balance of the fuel at each branch pipe outlet cannot be ensured. In the following several examples, how the above problems are solved by the solution in the present application will be explained in detail.
Example 1:
referring to fig. 2-7, a gaseous fuel engine fuel manifold, comprising: a gas transmission pipeline 4, a baffle plate group 5, a branch pipe outlet 2 and a fuel inlet 6; the gas pipeline 4 is internally provided with an annular cavity and is provided with an outlet end and an inlet end along the axial direction of the gas pipeline 4; the partition plate group 5 is composed of a first partition plate 501, a second partition plate 502 and a third partition plate 503 which are arranged along the axial direction of the gas transmission pipeline 4, and the 3 partition plates divide the cavity in the gas transmission pipeline 4 into a first chamber 401, a second chamber 402, a third chamber 403 and a fourth chamber 404;
as shown in fig. 5 to 7, a plurality of first through holes 5011, second through holes 5021 and third through holes 5031 axially arranged are respectively formed in the first partition 501, the second partition 502 and the third partition 503, wherein the first through holes 5011 communicate the first chamber 401 with the second chamber 402, the second through holes 5021 communicate the second chamber 402 with the third chamber 403, the third through holes 5031 communicate the third chamber 403 with the fourth chamber 404, and the first through holes 5011, the second through holes 5021 and the third through holes 5031 are alternately arranged, that is, there is no intersection area between the first through holes 5011 and the second through holes 5021 and between the second through holes 5021 and the third through holes 5031, and the number of the first through holes 5011, the second through holes 5021 and the third through holes 5031 is gradually reduced;
on the other hand, the fuel inlet 6 is installed on the outer side wall of the fourth chamber 404, the outlet end of the gas transmission pipeline 4 is installed with a plurality of branch pipe outlets 2, after the fuel enters the fourth chamber 404 through the feed inlet 6, the fuel enters the third chamber 403 through the third through hole 5031, the fuel enters the second chamber 402 through the second through hole 5021, the fuel enters the first chamber 401 through the first through hole 5011, and when the fuel moves in the four chambers, the fuel is subjected to pressure stabilization layer by layer through three groups of through holes, and finally, the fuel is uniformly discharged from the branch pipe outlets 2.
Further, as shown in fig. 5, the number of the branch pipe outlets 2 is 16, the number of the first through holes 5011 is 8, two sides of each first through hole 5011 are respectively provided with one branch pipe outlet 2, and two branch pipe outlets 2 are arranged between two adjacent first through holes 5011;
as an optimal scheme in this embodiment, the distance between each first through hole 5011 and the branch pipe outlets 2 on both sides of the first through hole is equal, so as to further ensure that the fluid pressure and flow at each branch pipe outlet 2 are uniform;
similarly, as shown in fig. 6, the number of the second through holes 5021 is four, two sides of each second through hole 5021 are respectively provided with one first through hole 5011, and two first through holes 5011 are arranged between two adjacent second through holes 5021;
as an optimal scheme in this embodiment, the distance between each second through hole 5021 and the first through holes 5011 on both sides of the second through hole is equal, so that the pressure and the flow in each first through hole 5011 are further ensured to be uniform;
similarly, as shown in fig. 7, the number of the third through holes 5031 is two, each of two sides of each third through hole 5031 is provided with a second through hole 5021, and two second through holes 5021 are provided between two adjacent third through holes 5031;
as an optimal solution in this embodiment, the distance between each third through hole 5031 and the second through holes 5021 on both sides of the third through hole is equal, so as to further ensure that the pressure and the flow in each first through hole 5021 are uniform.
Further, in order to ensure that the fluid pressure and the fluid flow at the third through hole 5031 are the same, the number of the fuel inlet pipes 3 may be two or one, and when the number of the fuel inlet pipes 3 is two, as long as the connecting line between the two fuel inlet pipes 3 passes through the axis of the gas transmission pipeline 4, the positions of the two fuel inlet pipes 3 do not affect the fluid pressure and the fluid flow at the third through hole 5031; when the number of the fuel inlet pipes 3 is one, it is sufficient that the fuel inlet pipes 3 are located at the middle position of the two third through holes 5031.
In addition, the first through holes 5011, the second through holes 5021, the third through holes 5031 and the branch pipe outlets 2 should be uniformly distributed circumferentially, and in addition, in order to ensure the stability of the air pressure in the gas transmission pipeline 4 and the stability of the air pressure at the branch pipe outlets 2, the total area of the through holes on each partition board should be ensured to be not less than the sum of the sectional areas of the branch pipe outlets 2, but far less than the sectional areas of the chambers, that is:
S sum of cross-sectional areas of fuel inlets 、S First through hole cross-sectional area and 、S cross sectional area of second through hole 、S Cross sectional area of third through hole and ≥S cross-sectional area of branch pipe outlet 。
Further, referring to fig. 4, the fuel inlet 6 includes: the fuel gas pipeline comprises a connecting section 601, a threaded section 602, a hanging table 603 and hanging table threads 604, wherein the connecting section 601 is inserted into the gas pipeline 4 and is connected with the gas pipeline 4 in a welding mode, the threaded section 602 is communicated with the connecting section 601 and is used for being connected with an external pipeline, and the hanging table 603 and the hanging table threads 604 are used for fixedly mounting the whole fuel main pipe.
It should be noted that the numbers of the partition plates, the first through holes 5011, the second through holes 5021, the third through holes 5031 and the branch pipe outlets 2 described in the embodiment are only examples, and in reality, the number of the partition plates and the number of the through holes in the partition plates can be adjusted according to the number of the branch pipe outlets 2, such as: when the number of the branch pipe outlets 2 is 32, the number of the partition plates can be 3 or 4, when the number of the partition plates is 4, the number of the through holes in the partition plates is 16, 8, 4 and 2 in sequence, and when the number of the partition plates is 3, the number of the through holes in the partition plates is 16, 8 and 4 in sequence;
to explain the above example again, the number of the first partition 501 and the number of the first through holes 5011 are set according to the number of the branch pipe outlets 2, the number of the first through holes 5011 is half of the number of the branch pipe outlets 2, when the number of the branch pipe outlets 2 is an odd number, the number of the first through holes 5011 is rounded to the nearest even number, the number of the second through holes 5021 is half of the number of the first through holes 5011, and so on, when the number of the through holes in a certain partition is two, three or four, no partition needs to be set.
Example 2:
the composition and the working principle of the fuel manifold of a gaseous fuel engine in the invention are explained in detail in embodiment 1, and this embodiment provides a gaseous fuel engine based on the fuel manifold of a gaseous fuel engine in embodiment 1, and specifically:
as shown in fig. 8, a gaseous fuel engine comprising: a casing 101, a fuel manifold 102, a turbine 103, a combustor 104 and a compressor 105;
the combustion chamber 104 is fixedly installed in the casing 101, the fuel manifold 102 is installed on the right side of the combustion chamber 104, wherein the outlet end of the branch pipe outlet 2 in the fuel manifold 102 is inserted into the combustion chamber 104 and is used for introducing gas fuel into the combustion chamber 104, the compressor 105 is installed on the left side in the casing 101 and is used for compressing the gas fuel and sending the compressed gas fuel into the fuel manifold 102, the turbine 103 is installed on the right side in the casing 101, the rotating shaft of the turbine 103 is connected with the driving shaft of the compressor 105, and the turbine 103 is driven by airflow to rotate so as to provide power for the compressor 105.
Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still make modifications to the technical solutions described in the foregoing embodiments, or make equivalent substitutions and improvements to part of the technical features of the foregoing embodiments, and any modifications, equivalent substitutions and improvements made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (12)
1. A gaseous fuel engine fuel manifold, comprising:
the gas transmission pipeline (4) is internally provided with an annular cavity and is provided with an outlet end and an inlet end along the axial direction;
the baffle group (5) is arranged in the gas transmission pipeline (4) and consists of N baffles which are arranged along the axial direction of the gas transmission pipeline (4), at least two axial through holes are arranged in each baffle, the N baffles divide a cavity in the gas transmission pipeline (4) into N +1 chambers, and N is more than or equal to 1;
a plurality of branch pipe outlets (2) which are uniformly distributed on the circumference are arranged on the outlet end of the gas transmission pipeline (4) and are communicated with the gas transmission pipeline (4);
at least one fuel inlet (6) is arranged at the inlet end of the gas transmission pipeline (4).
2. The gaseous fuel engine fuel manifold of claim 1, wherein the apertures of adjacent ones of said partitions are staggered.
3. The gaseous fuel engine fuel manifold of claim 1, wherein the greater the number of apertures in the baffle plate nearer the outlet end.
4. A gaseous fuel engine fuel manifold according to claim 3, characterized in that the number of branch outlets (2) is N 1 The number of through holes in the partition plate closest to the outlet end is N 2 When N is present 1 When it is even, N 1 ＝2N 2 When N is present 1 When it is odd, N 2 Is N 1 The half value of which is rounded to the nearest even number.
5. The fuel manifold as claimed in claim 4, wherein the number of through holes in the adjacent two of said partition plates closer to the outlet end is N 3 The number of through holes in the partition plate closer to the inlet end is N 4 When N is present 3 When it is even, N 3 ＝2N 4 When N is present 3 When it is odd, N 4 Is N 3 The value of half is rounded to the nearest even number.
6. The gaseous fuel engine fuel manifold as recited in claim 5, wherein adjacent ones of said baffles comprise baffle a closer to the outlet end and baffle B closer to the inlet end, wherein a through hole a is provided in baffle a and a through hole B is provided in baffle B;
two sides of the through hole B are provided with two through holes A adjacent to the through hole B, and the distance between the two through holes A and the distance between the two through holes B are equal.
7. A gaseous fuel engine fuel manifold according to claim 1, wherein the partition closest to said inlet end has two through holes adjacent to said fuel inlet (6) and wherein said two through holes are equidistant from said fuel inlet (6).
8. A gaseous fuel engine fuel manifold according to claim 1, characterized in that the sum of the cross-sectional areas of the fuel inlets (6) and the sum of the cross-sectional areas of all the through-holes in a single said diaphragm are greater than or equal to the sum of the cross-sectional areas of the holes in all the branch outlets (2).
9. A gaseous fuel engine fuel manifold according to claim 1, characterized in that the cross-sectional area of any one of said chambers is greater than the sum of the cross-sectional areas of the bores in all of said branch outlets (2).
10. A fuel manifold for a gaseous fuel engine according to any one of claims 1 to 9, characterised in that said fuel inlet (6) comprises: the connecting section (601) is inserted into the gas transmission pipeline (4) and connected with the gas transmission pipeline (4), and the thread section (602) is communicated with the connecting section (601) and integrally arranged.
11. The fuel manifold for gaseous fuel engine according to claim 10, wherein two hanging platforms (603) are symmetrically provided on both sides of said threaded section (602), and said hanging platforms (603) are provided with hanging platform threads (604).
12. An engine, comprising:
a casing (101);
a combustion chamber (104) mounted within the casing (101);
a gaseous fuelled engine fuel manifold as claimed in any one of claims 1 to 11 mounted within said casing (101) for supplying gaseous fuel to said combustion chamber (104);
a compressor (105) connected to the combustion chamber (104);
a turbine (103) connected to a drive shaft of the compressor (105).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211230233.1A CN115711178A (en) | 2022-10-08 | 2022-10-08 | Gaseous fuel engine fuel manifold and engine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211230233.1A CN115711178A (en) | 2022-10-08 | 2022-10-08 | Gaseous fuel engine fuel manifold and engine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN115711178A true CN115711178A (en) | 2023-02-24 |
Family
ID=85231106
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202211230233.1A Pending CN115711178A (en) | 2022-10-08 | 2022-10-08 | Gaseous fuel engine fuel manifold and engine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN115711178A (en) |
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2022
- 2022-10-08 CN CN202211230233.1A patent/CN115711178A/en active Pending
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