Spraying and atomizing device for air passage of hydrogen engine

Abstract

The utility model relates to the field of hydrogen engines, in particular to a hydrogen engine air channel liquid spraying atomization device. A liquid nozzle and a hydrogen nozzle are arranged in an air inlet channel communicated with a combustion chamber in a hydrogen engine, the liquid nozzle is communicated with an external liquid supply device, the hydrogen nozzle is communicated with an external hydrogen supply device, and liquid is sprayed by the liquid nozzle to form a primary atomization area; the primary atomization area is in contact with high-pressure hydrogen sprayed out of the hydrogen nozzle to form a secondary mixing atomization area, a good atomization effect can be achieved by impacting liquid through gas, a gas-entrained spraying nozzle or a nozzle with ultrahigh spraying pressure and matched equipment of the nozzle are replaced, the requirement for the nozzle and the spraying environment during liquid atomization is greatly lowered, and the spraying efficiency is improved. And low-temperature and low-pressure injection can be realized.

Description

TECHNICAL FIELD

[0001] The utility model relates to hydrogen engine technical field especially relates to a hydrogen engine air channel liquid spray atomization device. BACKGROUND

[0002] Spraying forms tiny particles in the air by spraying gas or liquid to achieve good atomization effect, which is widely used in many fields such as power machinery and environmental engineering. However, due to the large viscosity of some liquids, there are problems such as atomization difficulty during spraying, and high spraying pressure is required to achieve good atomization effect. Affected by reliability, cost and other related problems, high viscosity liquid needs to introduce a specific spraying system or method to achieve good atomization in a relatively low temperature and low pressure environment.

[0003] In the prior art, air entraining is generally used to solve the above problems, such as the application of aviation heavy oil in two-stroke engines. Air entraining requires a special air entraining injector, and compressed air needs to be injected into the fuel rail or cavity in advance. After the compressed air and fuel form a gas-liquid mixed state, they are sprayed through the nozzle of the air entraining injector.

[0004] However, during the air entraining process using the air entraining injector, knock phenomenon is easy to occur, and current methods such as delaying ignition angle are used to avoid the generation of knock, but this means sacrificing the power and efficiency of the engine. SUMMARY

[0005] The utility model aims at providing a hydrogen engine air channel liquid spray atomization device to solve the above problems existing in the prior art.

[0006] To achieve the above purpose, the utility model adopts the technical scheme that:

[0007] A hydrogen engine air channel liquid spray atomization device, comprising a hydrogen engine, the hydrogen engine air channel liquid spray atomization device further comprises:

[0008] An air inlet channel in communication with a combustion chamber in the hydrogen engine;

[0009] A liquid nozzle in communication with an external liquid supply device; and

[0010] A hydrogen gas nozzle in communication with an external hydrogen gas supply device;

[0011] Wherein, the liquid nozzle and the hydrogen gas nozzle are both arranged in the air inlet channel.

[0012] In a possible implementation, the liquid nozzle is arranged obliquely on one side of the hydrogen gas nozzle.

[0013] In a possible implementation, the liquid forms a primary atomization area after being sprayed through the liquid nozzle.

[0014] In a possible implementation, the primary atomization area forms a secondary mixed atomization area after being contacted with the high-pressure hydrogen gas sprayed through the hydrogen gas nozzle.

[0015] In a possible implementation, the hydrogen engine air channel liquid spray atomization device further comprises an ECU, and the hydrogen engine, the liquid nozzle and the hydrogen gas nozzle are electrically connected to the ECU.

[0016] In a possible implementation, the liquid nozzle is connected to an external liquid supply device through a liquid track.

[0017] In a possible implementation, the hydrogen gas nozzle is connected to an external hydrogen gas supply device through a hydrogen gas high-pressure track.

[0018] The technical scheme provided by the hydrogen engine air channel liquid spray atomization device has at least the following beneficial effects:

[0019] By arranging the liquid nozzle and the hydrogen gas nozzle in the air channel connected to the combustion chamber in the hydrogen engine, the liquid nozzle is connected to the external liquid supply device, the hydrogen gas nozzle is connected to the external hydrogen gas supply device, the liquid forms a primary atomization area after being sprayed through the liquid nozzle, and the primary atomization area forms a secondary mixed atomization area after being contacted with the high-pressure hydrogen gas sprayed through the hydrogen gas nozzle. BRIEF DESCRIPTION OF DRAWINGS

[0020] The accompanying drawings are used to provide a further understanding of the hydrogen engine air channel liquid spray atomization device, and constitute a part of the specification, and are used to explain the hydrogen engine air channel liquid spray atomization device together with the embodiments of the hydrogen engine air channel liquid spray atomization device, and do not constitute a limitation on the hydrogen engine air channel liquid spray atomization device.

[0021] Figure 1 A connection block diagram of the hydrogen engine air channel liquid spray atomization device is shown.

[0022] Figure 2 A cross-sectional view of the hydrogen engine air channel liquid spray atomization device is shown.

[0023] Figure 3 An external structure diagram of the hydrogen engine air channel liquid spray atomization device is shown.

[0024] Figure 4The hydrogen engine gas channel liquid injection atomization device provided by the utility model shows a schematic diagram of gas-liquid relative injection time and injection pulse width.

[0025] In the figure: 1, hydrogen engine; 101, combustion chamber; 2, ECU; 3, gas channel; 4, liquid nozzle; 5, hydrogen nozzle; 6, liquid track; 7, hydrogen high-pressure track; 8, liquid supply device; 9, hydrogen supply device; 10, primary atomization area; 11, secondary mixed atomization area. DETAILED DESCRIPTION

[0026] The technical solutions in the embodiments of the utility model will be apparently and completely described in connection with the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all the other embodiments obtained by the ordinary skilled in the art without creative labor belong to the protection scope of the utility model.

[0027] Among them, same parts are indicated by same reference numerals. It should be noted that the words "front", "back", "left", "right", "up" and "down" used in the following description refer to the directions in the drawings of the utility model specification, and the words "bottom surface" and "top surface", "inner" and "outer" refer to the directions towards or away from the specific parts. In addition, the terms "first", "second" are only used for description purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of indicated technical features. Therefore, the features limited by "first", "second" can explicitly or implicitly include one or more features. In the description of the utility model specification, the meaning of "multiple" is two or more than two.

[0028] The utility model will be further described in connection with the drawings and embodiments.

[0029] Figure 1 The connection block diagram of the hydrogen engine gas channel liquid injection atomization device provided by the utility model one exemplary embodiment shows, Figure 2 The cross-sectional view schematic diagram of the hydrogen engine gas channel liquid injection atomization device provided by the utility model one exemplary embodiment shows, Figure 3 The outside structure schematic diagram of the hydrogen engine gas channel liquid injection atomization device provided by the utility model one exemplary embodiment shows.

[0030] In detail, the hydrogen engine air passage liquid injection atomization device comprises a hydrogen engine 1, an air intake passage 3, a liquid nozzle 4, and a hydrogen gas nozzle 5, the air intake passage 3 is in communication with a combustion chamber 101 in the hydrogen engine 1; the liquid nozzle 4 is in communication with an external liquid supply device 8; the hydrogen gas nozzle 5 is in communication with an external hydrogen gas supply device 9; wherein the liquid nozzle 4 and the hydrogen gas nozzle 5 are both arranged in the air intake passage 3.

[0031] As prior art, the hydrogen engine 1 is a kind of power device based on internal combustion engine, using hydrogen gas as fuel, which generates power by burning hydrogen gas and oxygen mixture in air, and the main emission is water vapor, so it is considered as a clean and efficient energy solution. The hydrogen gas supply device 9 is responsible for storing and providing high-purity, stable pressure and flow rate hydrogen gas to the hydrogen engine, in this specific design, the hydrogen gas supply device 9 directly supplies hydrogen gas to the air intake passage 3 through the hydrogen gas nozzle 5, and the air intake passage 3 is in communication with the combustion chamber 101 inside the hydrogen engine 1, in order to ensure the safe transportation and management of hydrogen gas, the hydrogen gas supply device 9 usually includes high-pressure hydrogen storage bottle, pressure reducing valve, filter, circulating pump or ejector, various control valves and safety monitoring equipment such as overpressure and low pressure alarm device. The liquid supply device 8 is designed to assist the combustion process, here it sprays specific liquid to the air intake passage 3 through the liquid nozzle 4, these liquids may be used for cooling, lubrication or as auxiliary fuel to improve combustion efficiency; for example, in some application scenarios, water or other solvents can be used to help regulate the combustion temperature and reduce nitrogen oxide emissions; or use other types of fuel additives to enhance combustion effect; the liquid supply device 8 needs to accurately control the amount and timing of liquid injection, so as to form an ideal combustible mixture with hydrogen gas, thereby optimizing the combustion process; therefore, the liquid supply device 8 not only includes a liquid storage container, but also includes a precision metering pump, pipeline, connector and control unit to ensure that the liquid can be accurately sprayed into the air intake passage 3 as needed.

[0032] It can be understood that the hydrogen engine air passage liquid injection atomization device also comprises an ECU 2, and the hydrogen engine 1, the liquid nozzle 4, and the hydrogen gas nozzle 5 are electrically connected to the ECU 2.

[0033] In the embodiment of the present application, in the hydrogen engine air passage liquid injection atomization device, the electronic control unit ECU 2 is responsible for coordinating and optimizing the operation of the whole device. Specifically, when the hydrogen engine 1, the liquid nozzle 4, and the hydrogen gas nozzle 5 are electrically connected to the ECU 2, it means that the ECU 2 can directly control the working state of these components through electrical signals, ensuring that they operate accurately according to the preset logic and parameters.

[0034] Specifically, the liquid nozzle 4 is in communication with the external liquid supply device 8 through the liquid rail 6, and the hydrogen gas nozzle 5 is in communication with the external hydrogen gas supply device 9 through the hydrogen gas high-pressure rail 7.

[0035] In the embodiments of the present application, the liquid rail 6 and the hydrogen high-pressure rail 7 serve as transmission paths, not only providing a stable medium delivery channel, but also being able to adjust the pressure and flow of the fluid to a certain extent, ensuring that the liquid nozzle 4 and the hydrogen nozzle 5 accurately spray the required amount according to the instructions of the electronic control unit ECU 2. In addition, the design of dedicated rails helps to isolate different types of fluids, avoiding cross-contamination, and can integrate necessary safety measures such as pressure monitoring and emergency shutdown mechanisms to enhance the reliability and safety of the system. In this way, the configuration supports the hydrogen engine 1 to maintain optimal performance under various operating conditions, while promoting cleaner and more efficient energy use.

[0036] Further, the liquid nozzle 4 is obliquely arranged on one side of the hydrogen nozzle 5, and the liquid forms a primary atomization zone 10 after being sprayed through the liquid nozzle 4. The primary atomization zone 10 contacts the high-pressure hydrogen gas sprayed by the hydrogen nozzle 5 to form a secondary mixed atomization zone 11.

[0037] Next, the working principle of the hydrogen engine airway liquid spray atomization device according to the embodiments of the present application will be described.

[0038] The hydrogen gas nozzle is supplied with hydrogen gas by the hydrogen gas supply device, and the liquid nozzle is supplied with liquid by the liquid supply device; in the airway, the liquid droplets that are primary atomized by the liquid nozzle form a primary atomization zone and develop towards the high-pressure hydrogen gas sprayed by the hydrogen nozzle. When the primary atomization zone contacts the high-pressure hydrogen gas sprayed by the hydrogen nozzle, it will be impacted and cause secondary broken atomization, forming a secondary mixed atomization zone. The water droplet diameter is greatly reduced, and the spray pattern will also be reorganized under the impact of the compressed gas, and the atomization effect is well optimized; the hydrogen engine intake will bring the spray in the airway into the combustion chamber, and finally be discharged on the exhaust side.

[0039] In one example, the liquid nozzle is a water nozzle, and the sprayed liquid is water. Specifically, the hydrogen high-pressure rail and the liquid rail supply the hydrogen nozzle and the water nozzle with hydrogen gas and water, respectively. The hydrogen pressure is 6 bar, and the water pressure is 3 bar. The center axes of the hydrogen nozzle and the water nozzle corresponding to the same combustion chamber are arranged in the same plane, with an included angle of 90°. The hydrogen nozzle is directly opposite the direction of the airway, which design can make the water and gas impact the mixed atomization zone after reformation better mixed with the hydrogen engine intake, and develop towards the cylinder (combustion chamber), and finally be discharged on the exhaust side. The injection control and calibration of hydrogen and water are realized by the ECU of the hydrogen engine, and the relative injection time and injection pulse width are as shown in Figure 4 .

[0040] In summary, by setting liquid nozzles and hydrogen nozzles in the air inlet communicating with the combustion chamber in the hydrogen engine, the liquid nozzles communicate with the external liquid supply device, the hydrogen nozzles communicate with the external hydrogen supply device, the liquid is sprayed through the liquid nozzles to form a primary atomization zone, the primary atomization zone contacts the high-pressure hydrogen gas sprayed by the hydrogen nozzles to form a secondary mixed atomization zone, and good atomization effect can be realized by means of gas impacting liquid, replacing the nozzle of air injection or the nozzle with super-high injection pressure and its matching equipment, greatly reducing the requirements of liquid on the nozzle and the injection environment during atomization, and low-temperature and low-pressure injection can be realized.

[0041] In the embodiments disclosed in the present application, the terms "mounting", "connecting", "connecting", "fixing" and the like should be understood in a broad sense. For example, "connecting" can be fixed connection, detachable connection or integral connection; "connecting" can be direct connection or indirect connection through an intermediate medium. For those skilled in the art, the specific meanings of the above terms in the embodiments disclosed in the present application can be understood according to the specific circumstances.

[0042] The above is only the preferred embodiment of the present application, and it should be pointed out that for those skilled in the art, without departing from the principle of the present application, a number of improvements and refinements can be made, and these improvements and refinements should also be considered as the protection scope of the present application.

Claims

1. A hydrogen engine air passage liquid spray atomizing device, comprising a hydrogen engine (1), characterized in that, The hydrogen engine air channel liquid spray atomization device further comprises: an air inlet channel (3) in communication with a combustion chamber (101) in the hydrogen engine (1); a liquid nozzle (4) in communication with an external liquid supply device (8); and a hydrogen gas nozzle (5) in communication with an external hydrogen gas supply device (9); wherein the liquid nozzle (4) and the hydrogen gas nozzle (5) are both arranged in the air inlet channel (3).

2. The hydrogen engine gas passage liquid spray atomizing device according to claim 1, characterized by, The liquid nozzle (4) is arranged obliquely on one side of the hydrogen gas nozzle (5).

3. The hydrogen engine gas port liquid mist atomizing device of claim 1, wherein, Liquid sprayed through the liquid nozzle (4) forms a primary atomization zone (10).

4. The hydrogen engine port injection misting device of claim 3, wherein, The primary atomization zone (10) contacts high-pressure hydrogen gas sprayed from the hydrogen gas nozzle (5) to form a secondary mixed atomization zone (11).

5. The hydrogen engine port injection misting device of claim 1, wherein, The hydrogen engine air channel liquid spray atomization device further comprises an ECU (2), and the hydrogen engine (1), the liquid nozzle (4), and the hydrogen gas nozzle (5) are all electrically connected to the ECU (2).

6. The hydrogen engine port injection misting device of claim 1, wherein, The liquid nozzle (4) is in communication with the external liquid supply device (8) through a liquid track (6).

7. The hydrogen engine port injection misting device of claim 1, wherein, The hydrogen gas nozzle (5) is in communication with the external hydrogen gas supply device (9) through a hydrogen gas high-pressure track (7).

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