CN118167510A - Air supply device of natural gas engine - Google Patents
Air supply device of natural gas engine Download PDFInfo
- Publication number
- CN118167510A CN118167510A CN202410433060.6A CN202410433060A CN118167510A CN 118167510 A CN118167510 A CN 118167510A CN 202410433060 A CN202410433060 A CN 202410433060A CN 118167510 A CN118167510 A CN 118167510A
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- Prior art keywords
- gas
- air
- pipe
- turbine
- inlet
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- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 title claims abstract description 104
- 239000003345 natural gas Substances 0.000 title claims abstract description 52
- 239000007789 gas Substances 0.000 claims abstract description 205
- 238000002347 injection Methods 0.000 claims description 33
- 239000007924 injection Substances 0.000 claims description 33
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 18
- 230000001105 regulatory effect Effects 0.000 claims description 14
- 230000000903 blocking effect Effects 0.000 claims description 10
- 229910052742 iron Inorganic materials 0.000 claims description 9
- 238000012544 monitoring process Methods 0.000 claims description 3
- 238000002485 combustion reaction Methods 0.000 description 6
- 101000793686 Homo sapiens Azurocidin Proteins 0.000 description 3
- 230000001276 controlling effect Effects 0.000 description 3
- 239000000446 fuel Substances 0.000 description 2
- 239000012535 impurity Substances 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- 238000004378 air conditioning Methods 0.000 description 1
- 230000004075 alteration Effects 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 230000008021 deposition Effects 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 239000002737 fuel gas Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 230000000750 progressive effect 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
- F02M21/0203—Apparatus for supplying engines with non-liquid fuels, e.g. gaseous fuels stored in liquid form for gaseous fuels characterised by the type of gaseous fuel
- F02M21/0215—Mixtures of gaseous fuels; Natural gas; Biogas; Mine gas; Landfill gas
-
- 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
-
- 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
- F02M21/04—Gas-air mixing apparatus
Landscapes
- 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)
- Supercharger (AREA)
Abstract
The invention provides a gas supply device of a natural gas engine, which comprises a turbine gas inlet shell, wherein the turbine gas inlet shell is provided with a gas inlet, a gas inlet turbine is rotationally connected in the turbine gas inlet shell, the turbine gas inlet shell is communicated with an air inlet pipe, the free end of the air inlet pipe is communicated with a high-pressure air tank, and the free end of the high-pressure air tank is communicated with an air outlet pipe; the electromagnetic air-jet device comprises a gas inlet pipe, and is characterized by further comprising a gas inlet pipe, wherein the free end of the gas inlet pipe is communicated with a high-pressure gas tank, the free end of the high-pressure gas tank is communicated with a gas outlet pipe, the air outlet pipe is connected with a gas mixing shell, an air inlet cavity and a gas inlet cavity are arranged in the gas mixing shell, an air adjusting impeller is rotationally connected in the air inlet cavity, a gas adjusting impeller coaxially rotating with the air adjusting impeller is rotationally connected in the gas mixing shell, the gas mixing shell is connected with a gas mixing pipe, and the gas mixing pipe is communicated with an electromagnetic air-jet device. The invention can always ensure the optimal mixing ratio of the natural gas and the air, so that the natural gas of the engine can be fully combusted.
Description
Technical Field
The invention belongs to the technical field of engines, and relates to a gas supply device of a natural gas engine.
Background
Natural gas engines have received wide attention and application as an important component of modern power systems due to their clean, efficient, and environmentally friendly properties. The natural gas engine takes natural gas as fuel and generates power through combustion, and compared with the traditional fuel engine, the natural gas engine has remarkable advantages in reducing harmful gas emission and improving energy utilization efficiency.
In existing natural gas engines, the gas supply is a critical component for achieving mixing of natural gas with air and feeding into the engine combustion chamber. In general, the gas supply device includes a natural gas storage tank, a pressure regulating valve, a mixer, a gas supply line, and the like. Natural gas is depressurized from the storage tank through a pressure regulating valve, enters a mixer to be mixed with air, and is then sent into an engine combustion chamber through a gas supply pipeline.
However, existing natural gas engines have some problems in the gas supply process. In particular, in terms of controlling the mixing ratio of natural gas and air, the existing air supply device often cannot achieve precise regulation and control. Too high a mixing ratio can result in incomplete engine combustion, carbon deposition and increased emission of harmful gases; while an excessively low mixing ratio may result in insufficient engine power and unstable operation.
Disclosure of Invention
The invention aims to provide a gas supply device of a natural gas engine, which can always ensure the optimal mixing ratio of natural gas and air, ensure the natural gas of the engine to be fully combusted and improve the performance of the natural gas engine.
In order to solve the technical problems, the invention provides an air supply device of a natural gas engine, which comprises a turbine air inlet shell, wherein an air inlet cavity and an exhaust supercharging cavity are arranged in the turbine air inlet shell, the turbine air inlet shell is provided with an air inlet communicated with the air inlet cavity, the turbine air inlet shell is provided with an exhaust air inlet communicated with the exhaust supercharging cavity, the exhaust air inlet is used for being connected with an exhaust outlet of the engine, the turbine air inlet shell is provided with an exhaust air outlet communicated with the exhaust supercharging cavity, the exhaust air outlet is used for being connected with an exhaust pipe, an air inlet turbine is rotationally connected in the air inlet cavity, an air inlet pipe coaxially rotated with the air inlet turbine is rotationally connected in the exhaust supercharging cavity, the free end of the air inlet pipe is communicated with a high-pressure air tank, and the free end of the high-pressure air tank is communicated with an air outlet pipe;
The electromagnetic air injection device comprises a natural gas storage bottle, and is characterized by further comprising a gas inlet pipe used for being connected with the natural gas storage bottle, a high-pressure electromagnetic cut-off valve is arranged on the gas inlet pipe, a high-pressure gas tank is communicated with the free end of the gas inlet pipe, a gas outlet pipe is communicated with the free end of the high-pressure gas tank, a gas mixing shell is connected with the free end of the gas outlet pipe, an air inlet cavity communicated with the air outlet pipe is arranged in the gas mixing shell, an air adjusting impeller is rotationally connected in the air inlet cavity, the periphery of the air adjusting impeller is tightly attached to the inner wall of the air inlet cavity, a gas injection pipe is connected with the free end of the air injection pipe, a gas inlet cavity communicated with an electromagnetic controller is connected in the gas mixing shell, and the electromagnetic controller is used for controlling the electromagnetic controller.
By adopting the technical scheme, when the gas engine works, the high-pressure electromagnetic cut-off valve is opened to enable natural gas to enter the high-pressure gas tank through the gas inlet pipe, the discharged tail gas drives the tail gas pressurizing turbine to rotate in the tail gas pressurizing cavity, the air flow from the head face drives the air pressurizing turbine to rotate in the air pressurizing cavity, and finally the tail gas pressurizing turbine and the air pressurizing turbine synchronously drive the air inlet turbine to rotate, so that air is sucked into the air inlet cavity from the air inlet and then enters the high-pressure gas tank through the air inlet pipe; air in the high-pressure air tank enters the air inlet cavity through the air outlet pipe, natural gas in the high-pressure air tank enters the gas inlet cavity through the gas outlet pipe, the air adjusting impeller and the gas adjusting impeller which are driven to rotate synchronously rotate are driven to rotate and then enter the gas mixing pipe, the air and the natural gas are ensured to be mixed in the same mixing proportion all the time, and finally, the mixed gas is sprayed into the piston cylinder when the piston moves downwards through the electromagnetic sprayer.
The invention further provides that an air pressurizing cavity is further arranged in the turbine air inlet shell, one side of the air pressurizing cavity, which is far away from the air inlet cavity, is opened, the opening of the air pressurizing cavity faces to the running direction of the vehicle, an exhaust channel is arranged on one side of the air pressurizing cavity, and the air pressurizing cavity is rotationally connected with an air pressurizing turbine which rotates coaxially with the air inlet turbine.
By adopting the technical scheme, the high-pressure air flow generated during running of the vehicle is utilized to drive the air booster turbine to drive the air inlet turbine to rotate, so that the pressure of tail gas driving the air inlet turbine to rotate is reduced, the power consumption of the engine is reduced, and the power output of the engine is more sufficient.
The invention is further arranged that the opening of the air pressurizing cavity is connected with a grid cover, and a plurality of spiral air inlet grooves which incline along the inclined direction of the air pressurizing turbine are formed through the grid cover.
The invention is further arranged that the middle part of the gas inlet pipe is communicated with a gas filter.
The invention is further arranged that an air filter is arranged at the air inlet.
The invention further provides that the high-pressure air tank and the high-pressure gas tank are connected with pressure sensors for monitoring the internal pressure of the high-pressure air tank and the high-pressure gas tank.
The invention further provides that the air inlet pipes are all provided with flow regulating electromagnetic valves.
The electromagnetic jet device further comprises a main pipe body communicated with the gas injection pipe, a gas injection pipe arranged at the lower end of the main pipe body and communicated with the main pipe body, a mounting pipe arranged at the upper end of the main pipe body, an annular electromagnet arranged at the upper end of the mounting pipe, a telescopic shaft connected with the mounting pipe and the annular electromagnet in a sliding mode, an iron top cap arranged at the upper end of the telescopic shaft and matched with the annular electromagnet, a gas blocking shaft connected to the lower end of the telescopic shaft, and a reset spring arranged between the annular electromagnet and the iron top cap and sleeved outside the telescopic shaft, wherein the inner diameter of the main pipe body is larger than the inner diameter of the gas injection pipe, the outer diameter of the gas blocking shaft is equal to the inner diameter of the gas injection pipe, and a plurality of gas injection holes are formed in the lower end of the gas injection pipe.
Through adopting above-mentioned technical scheme, when the piston moves down, annular electromagnet does not switch on, and the gas shutoff axle does not block up the fumarole, and the mixed gas can be spouted into the piston cylinder and burn, and when the piston moved up, annular electromagnet switch on, and the compression reset spring of iron top cap is held to the suction, makes the gas shutoff axle stretch into down to the fumarole in blocking up, does not spout mixed gas to the piston cylinder in, prevents simultaneously that tail gas from entering into electromagnetic jet.
Compared with the prior art, the invention has the following beneficial effects:
firstly, the air and natural gas always keep the same mixing proportion and enter the gas mixing pipe through the air adjusting impeller and the gas adjusting impeller in the gas mixing shell, so that the air and natural gas always keep the optimal mixing proportion, the natural gas of the engine can be fully combusted, and the performance of the natural gas engine is improved;
Secondly, the exhaust gas discharged by the engine is utilized to drive the air inlet turbine to rotate, so that the air is added to be mixed with the natural gas, and the condition of insufficient oxygen during combustion is avoided;
Thirdly, the invention further utilizes the head-on high-pressure airflow to assist to drive the air inlet turbine to rotate when the vehicle runs, further increases the air to enter and mix with the natural gas, reduces the pressure of tail gas emission, enables the tail gas to be more smoothly emitted, reduces the work applied to the tail gas emission by the engine, and ensures that the power of the engine is more sufficient.
Drawings
FIG. 1 is a schematic view of the overall structure of the present invention;
FIG. 2 is used to show a grille cover on a turbine inlet casing;
FIG. 3 is a partial cross-sectional view for illustrating the internal structure of a turbine inlet casing;
FIG. 4 is a partial cross-sectional view for showing the internal structure of the gas mixing housing;
Fig. 5 is a partial sectional view for showing an internal structure of the electromagnetic jet.
1, A turbine air inlet shell; 2. an air inlet cavity; 3. a tail gas pressurizing cavity; 4. an air plenum; 5. an air inlet; 6. an air filter; 7. an air intake turbine; 8. a tail gas inlet; 9. a tail gas outlet; 10. an exhaust gas supercharging turbine; 11. an exhaust passage; 12. an air boost turbine; 13. a grill cover; 14. a spiral air inlet groove; 15. an air intake pipe; 16. a high pressure air tank; 17. an air outlet pipe; 18. a fuel gas inlet pipe; 19. a gas filter; 20. a high-pressure electromagnetic cut-off valve; 21. a high pressure gas cylinder; 22. a gas outlet pipe; 23. a pressure sensor; 24. a flow rate regulating solenoid valve; 25. a gas mixing housing; 26. an air intake chamber; 27. an air conditioning impeller; 28. a gas inlet cavity; 29. a gas regulating impeller; 30. a gas mixing tube; 31. an air injection pipe; 32. a main pipe body; 33. a gas lance; 34. installing a pipe; 35. an annular electromagnet; 36. a telescopic shaft; 37. an iron top cap; 38. a blocking shaft; 39. a return spring; 40. and the air injection holes.
Detailed Description
The following describes in further detail an air supply device for a natural gas engine according to the present invention with reference to the accompanying drawings and specific embodiments. The advantages and features of the present invention will become more apparent from the following description. It should be noted that the drawings are in a very simplified form and are all to a non-precise scale, merely for convenience and clarity in aiding in the description of embodiments of the invention. The same or similar reference numbers in the drawings refer to the same or similar parts.
Referring to fig. 1-5, the air supply device of the natural gas engine provided by the invention comprises a turbine air inlet shell 1, wherein an air inlet cavity 2, an exhaust supercharging cavity 3 and an air supercharging cavity 4 are arranged in the turbine air inlet shell 1, the air inlet cavity 2 is positioned between the exhaust supercharging cavity 3 and the air supercharging cavity 4, the turbine air inlet shell 1 is provided with an air inlet 5 communicated with the air inlet cavity 2, an air filter 6 is arranged at the air inlet 5, an air inlet turbine 7 is rotatably connected with the air inlet cavity 2, and air is sucked into the air inlet cavity 2 from the air inlet 5 through rotation of the air inlet turbine 7. The upper end of turbine inlet casing 1 is provided with a tail gas air inlet 8 that communicates with tail gas booster cavity 3, and tail gas air inlet 8 is used for being connected with the gas vent of engine, and the lower extreme of turbine inlet casing 1 is provided with a tail gas outlet 9 that communicates with tail gas booster cavity 3, and tail gas outlet 9 is used for being connected with the blast pipe, and tail gas booster cavity 3 internal rotation is connected with a tail gas booster turbine 10 that is coaxial pivoted with air inlet turbine 7, drives tail gas booster turbine 10 and rotates when discharging tail gas, and then drives air inlet turbine 7 and rotate. When the vehicle runs, high-pressure air at the head-on enters from the opening of the air booster cavity 4, the opening of the air booster cavity 4 faces the running direction of the vehicle, an exhaust passage 11 is arranged at the lower side of the air booster cavity 4, air is discharged from the exhaust passage 11, an air booster turbine 12 which rotates coaxially with the air inlet turbine 7 is rotationally connected in the air booster cavity 4, a grid cover 13 is connected at the opening of the air booster cavity 4, a plurality of spiral air inlet grooves 14 which incline along the inclined direction of the air booster turbine 12 are formed through the grid cover 13, the spiral air inlet grooves 14 adjust the air into vortex-shaped air flow, and the air booster turbine 12 is driven to rotate, and the air inlet turbine 7 is driven to rotate again.
The turbine air inlet shell 1 is communicated with an air inlet pipe 15 communicated with the air inlet cavity 2, the free end of the air inlet pipe 15 is communicated with a high-pressure air tank 16, and the free end of the high-pressure air tank 16 is communicated with an air outlet pipe 17. The gas storage device also comprises a gas inlet pipe 18 used for being connected with the natural gas storage bottle, the middle part of the gas inlet pipe 18 is communicated with a gas filter 19, and the gas filter is used for filtering impurities in the natural gas and ensuring that the natural gas entering the engine or the burner is clean and free of impurities. The head end of the gas inlet pipe 18 is provided with a high-pressure electromagnetic cut-off valve 20, and the high-pressure electromagnetic cut-off valve 20 is used for controlling natural gas to be released from the natural gas storage bottle. The free end of the gas inlet pipe 18 is communicated with a high-pressure gas tank 21, and the free end of the high-pressure gas tank 21 is communicated with a gas outlet pipe 22. The high-pressure air tank 16 and the high-pressure air tank 21 are connected with a pressure sensor 23 for monitoring the internal pressure, the air inlet pipe 15 is provided with a flow regulating electromagnetic valve 24, the pressure in the high-pressure air tank 16 and the high-pressure air tank 21 is monitored through the pressure sensor 23, the flow regulating electromagnetic valve 24 and the high-pressure electromagnetic cut-off valve 20 are controlled, and the pressure in the high-pressure air tank 16 and the high-pressure air tank 21 is ensured to keep reasonable set values.
The free ends of the air outlet pipe 17 and the gas outlet pipe 22 are connected with an air mixing shell 25, an air inlet cavity 26 communicated with the air outlet pipe 17 is arranged in the air mixing shell 25, an air adjusting impeller 27 is rotationally connected in the air inlet cavity 26, and the periphery of the air adjusting impeller 27 is clung to the inner wall of the air inlet cavity 26. A gas inlet cavity 28 communicated with the gas inlet pipe 18 is arranged in the gas mixing shell 25, a gas adjusting impeller 29 coaxially rotating with the air adjusting impeller 27 is rotationally connected in the gas mixing shell 25, the periphery of the gas adjusting impeller 29 is tightly attached to the inner wall of the gas inlet cavity 28, and the air and the natural gas are mixed by keeping the same mixing proportion all the time through the air adjusting impeller 27 and the gas adjusting impeller 29. The gas mixing shell 25 is connected with a gas mixing pipe 30, the air inlet cavity 26 and the gas inlet cavity 28 are communicated with the gas mixing pipe 30, and the gas mixing pipe 30 is communicated with four gas injection pipes 31.
The free end of each gas injection pipe 31 is connected with an electromagnetic gas injector communicated with the gas injection pipe, and the electromagnetic gas injector adopts electromagnetic control gas injection. The electromagnetic jet comprises a main pipe body 32 communicated with the gas injection pipe 31, a section of gas injection pipe 33 arranged at the lower end of the main pipe body 32 and communicated with the main pipe body, a mounting pipe 34 arranged at the upper end of the main pipe body 32, an annular electromagnet 35 arranged at the upper end of the mounting pipe 34, a telescopic shaft 36 which is in sliding connection with the mounting pipe 34 and the annular electromagnet 35, an iron top cap 37 arranged at the upper end of the telescopic shaft 36 and matched with the annular electromagnet 35, a gas blocking shaft 38 connected at the lower end of the telescopic shaft 36, and a return spring 39 arranged between the annular electromagnet 35 and the iron top cap 37 and sleeved with the telescopic shaft 36, wherein the inner diameter of the main pipe body 32 is larger than the inner diameter of the gas injection pipe 33, the outer diameter of the gas blocking shaft 38 is equal to the inner diameter of the gas injection pipe 33, a plurality of gas injection holes 40 are formed in the lower end of the gas injection pipe 33, and the annular electromagnet 35 is electrified to enable the gas blocking shaft 38 to extend downwards into the gas injection pipe 33 to form a normally open state.
Working principle: when the gas engine works, the high-pressure electromagnetic cut-off valve 20 is opened to enable natural gas to enter the high-pressure gas tank 21 through the gas inlet pipe 18, the discharged tail gas drives the tail gas booster turbine 10 to rotate in the tail gas booster cavity 3, the air booster turbine 12 is driven to rotate by the head-on airflow in the air booster cavity 4, and finally the tail gas booster turbine 10 and the air booster turbine 12 synchronously drive the air inlet turbine 7 to rotate, air is sucked into the air inlet cavity 2 from the air inlet port 5 and then enters the high-pressure air tank 16 through the air inlet pipe 15;
After the pressure sensor 23 monitors that the air pressure ratio in the high-pressure air tank 16 and the high-pressure air tank 21 is not in a set value, the internal pressure is quickly regulated through the cooperation of the flow regulating electromagnetic valve 24 and the high-pressure electric cut-off valve 20, the air in the high-pressure air tank 16 enters the air inlet cavity 26 through the air outlet pipe 17, the natural gas in the high-pressure air tank 21 enters the gas inlet cavity 28 through the gas outlet pipe 22, and the air regulating impeller 27 and the gas regulating impeller 29 which are driven to synchronously rotate are driven to rotate and then enter the gas mixing pipe 30, so that the air and the natural gas are ensured to be mixed always in the same mixing proportion;
When the piston moves downwards, the annular electromagnet 35 is not electrified, the air blocking shaft 38 does not block the air injection hole 40, the mixed gas can be injected into the piston cylinder for combustion, and when the piston moves upwards, the annular electromagnet 35 is electrified to attract the iron top cap 37 to compress the reset spring 39, so that the air blocking shaft 38 extends downwards into the air injection pipe 33 to block the air injection hole 40, the mixed gas is not injected into the piston cylinder, and meanwhile, the tail gas is prevented from entering the electromagnetic air injector.
It should be noted that, in the present description, each embodiment is described in a progressive manner, and each embodiment is mainly described in a different manner from other embodiments, and identical and similar parts between the embodiments are all enough to refer to each other.
The above description is only illustrative of the preferred embodiments of the present invention and is not intended to limit the scope of the present invention, and any alterations and modifications made by those skilled in the art based on the above disclosure shall fall within the scope of the appended claims.
Claims (8)
1. The utility model provides a gas supply device of natural gas engine, includes turbine inlet casing (1), a serial communication port, be provided with in turbine inlet casing (1) and advance gas chamber (2) and tail gas booster cavity (3), turbine inlet casing (1) be provided with advance gas chamber (2) intercommunication air inlet (5), turbine inlet casing (1) be provided with advance gas chamber (3) intercommunication tail gas air inlet (8), tail gas air inlet (8) are used for being connected with the gas vent of engine, turbine inlet casing (1) be provided with advance gas chamber (3) intercommunication tail gas outlet (9), tail gas outlet (9) are used for being connected with the blast pipe, advance gas chamber (2) internal rotation be connected with advance gas turbine (7), advance gas chamber (3) internal rotation be connected with advance gas turbine (10) of gas turbine (7) coaxial rotation, turbine inlet casing (1) communicate with advance gas chamber (3) intercommunication air inlet (15), air inlet tube (15)'s free end intercommunication has high-pressure air outlet (16), air outlet (17) have air tank (16) free air tank (17) of high-pressure air outlet pipe intercommunication.
The gas mixing device is characterized by further comprising a gas inlet pipe (18) connected with a natural gas storage bottle, a high-voltage electric shutoff valve (20) is arranged on the gas inlet pipe (18), a high-pressure gas tank (21) is communicated with the free end of the gas inlet pipe (18), a gas outlet pipe (22) is communicated with the free end of the high-pressure gas tank (21), a gas mixing shell (25) is connected with the free end of the gas outlet pipe (22) through the air outlet pipe (17), an air inlet cavity (26) communicated with the air outlet pipe (17) is arranged in the gas mixing shell (25), an air regulating impeller (27) is rotationally connected with the air inlet cavity (26) in the air mixing shell (25), the periphery of the air regulating impeller (26) is tightly attached to the inner wall of the air inlet cavity (26), a gas inlet cavity (28) communicated with the gas inlet cavity (28) is arranged in the gas mixing shell (25), the gas inlet cavity (28) is rotationally connected with the gas inlet cavity (28) through the gas mixing shell (25), the gas mixing pipe (30) is communicated with the gas injection pipe (31), the free end of the gas injection pipe (31) is connected with an electromagnetic jet device communicated with the gas injection pipe, and the electromagnetic jet device adopts electromagnetic control jet.
2. The natural gas engine air supply device according to claim 1, characterized in that an air pressurizing cavity (4) is further arranged in the turbine air inlet shell (1), one side of the air pressurizing cavity (4) away from the air inlet cavity (2) is opened, the opening of the air pressurizing cavity (4) faces the running direction of a vehicle, an exhaust channel (11) is arranged on one side of the air pressurizing cavity (4), and an air pressurizing turbine (12) which rotates coaxially with the air inlet turbine (7) is rotationally connected in the air pressurizing cavity (4).
3. The natural gas engine air supply device according to claim 2, wherein a grille cover (13) is connected to the opening of the air pressurizing chamber (4), and a plurality of spiral air inlet grooves (14) inclined along the inclination direction of the air pressurizing turbine (12) are formed through the grille cover (13).
4. A natural gas engine air supply device according to claim 1, characterized in that the middle part of the gas inlet pipe (18) is connected with a gas filter (19).
5. A natural gas engine air supply according to claim 1, characterized in that an air filter (6) is provided at the air inlet (5).
6. A natural gas engine supply according to claim, characterized in that the high-pressure air tank (16) and the high-pressure gas tank (21) are each connected with a pressure sensor (23) for monitoring the internal pressure thereof.
7. A natural gas engine air supply device according to claim 6, characterized in that the air inlet pipes (15) are each provided with a flow regulating solenoid valve (24).
8. A gas supply device for a natural gas engine according to any one of claims 1 to 7, wherein the electromagnetic jet comprises a main pipe body (32) communicated with the gas injection pipe (31), a gas injection pipe (33) arranged at the lower end of the main pipe body (32) and communicated with the main pipe body, a mounting pipe (34) arranged at the upper end of the main pipe body (32), an annular electromagnet (35) arranged at the upper end of the mounting pipe (34), a telescopic shaft (36) slidably connected with the mounting pipe (34) and the annular electromagnet (35), a top iron cap (37) arranged at the upper end of the telescopic shaft (36) and matched with the annular electromagnet (35), a gas blocking shaft (38) connected to the lower end of the telescopic shaft (36), a reset spring (39) arranged between the annular electromagnet (35) and the top iron cap (37) and sleeved outside the telescopic shaft (36), the inner diameter of the main pipe body (32) is larger than the inner diameter of the mounting pipe (34), and the gas injection pipe (33) has a plurality of gas injection holes (40) formed at the outer diameter of the gas injection pipe (33).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202410433060.6A CN118167510A (en) | 2024-04-11 | 2024-04-11 | Air supply device of natural gas engine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202410433060.6A CN118167510A (en) | 2024-04-11 | 2024-04-11 | Air supply device of natural gas engine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN118167510A true CN118167510A (en) | 2024-06-11 |
Family
ID=91350438
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202410433060.6A Pending CN118167510A (en) | 2024-04-11 | 2024-04-11 | Air supply device of natural gas engine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN118167510A (en) |
-
2024
- 2024-04-11 CN CN202410433060.6A patent/CN118167510A/en active Pending
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