Diesel rising film combustion atomization device

Abstract

The utility model discloses a diesel rising film combustion atomization device which comprises a rising film pipe, the right side of the rising film pipe is communicated with an atomization pipe, the inner wall of the rising film pipe is provided with a nanoscale hydrophobic coating, and the inner wall of the nanoscale hydrophobic coating is fixedly connected with a plurality of turbulent flow rings. According to the utility model, the nanoscale hydrophobic coating is matched with the turbulent flow ring, so that diesel oil forms a uniform and stable liquid film on the inner wall of the rising film tube, the adhesive force between the diesel oil and the tube wall is effectively reduced, and the flow resistance is reduced; the atomizing blades distributed in a spiral shape are matched with the air inlet pipe, a liquid film is secondarily torn under the shearing action of air flow, compared with traditional pressure type atomization, the average atomization particle size of diesel oil can be reduced by 40% or above, the oil-gas mixing uniformity is improved to 85%, the combustion efficiency is remarkably improved, emission of incomplete combustion products such as carbon monoxide and hydrocarbon is reduced, and the energy consumption is reduced. The device has the advantages of being convenient to use and good in atomization effect.

Description

Technical Field

[0001] This utility model relates to the field of diesel rising film atomization technology, specifically a diesel rising film combustion atomization device. Background Technology

[0002] In industrial production and some civilian sectors, diesel fuel is a commonly used fuel, and its combustion efficiency directly affects energy utilization efficiency and environmental pollution levels. Traditional diesel combustion methods have many problems, among which poor diesel atomization is a key factor leading to incomplete combustion. This not only wastes energy but also produces large amounts of harmful gases, such as carbon monoxide, hydrocarbons, and particulate matter, causing serious environmental pollution.

[0003] Currently, common diesel atomization methods have several drawbacks. Pressure atomization uses an oil pump to pressurize diesel fuel before spraying it from a nozzle, utilizing the high-pressure liquid's high-speed injection to form atomization. However, this method is significantly affected by impurities in the diesel fuel; after long-term use, impurities tend to accumulate at the nozzle, leading to nozzle blockage and severely impacting injection efficiency and atomization quality. Furthermore, this method requires high oil pump pressure, resulting in a substantial increase in equipment energy consumption and operating costs.

[0004] Air-assisted atomization uses a mixture of compressed air and diesel fuel, atomizing the diesel fuel into small droplets through the high-speed airflow. However, this method requires specialized air compression equipment, making the system complex and resulting in high investment costs. Furthermore, the air-to-diesel mixing ratio is difficult to control precisely; an improper ratio can lead to unstable combustion and significantly impact combustion efficiency.

[0005] In existing technologies, diesel fuel experiences high flow resistance within the combustion device, making it difficult to form a uniform and stable liquid film, thus affecting atomization. Simultaneously, the lack of an effective secondary tearing structure prevents sufficient refinement of diesel droplets, resulting in low fuel-air mixing uniformity and limited combustion efficiency. Therefore, there is an urgent need to develop a diesel rising film combustion atomization device that can reduce diesel flow resistance, improve liquid film uniformity, and achieve efficient secondary atomization through innovative structures, thereby enhancing combustion efficiency and stability. Utility Model Content

[0006] To address the problems mentioned in the background art, the purpose of this utility model is to provide a diesel rising film combustion atomizing device, which has the advantages of being easy to use and having a good atomization effect.

[0007] To achieve the above objectives, this utility model provides the following technical solution: a diesel rising film combustion atomization device, comprising a rising film tube, an atomizing tube connected to the right side of the rising film tube, a nano-level hydrophobic coating disposed on the inner wall of the rising film tube, a turbulence ring fixedly connected to the inner wall of the nano-level hydrophobic coating, the number of the turbulence rings being several, atomizing blades fixedly connected to the inner wall of the atomizing tube, the number of the atomizing blades being several, the atomizing blades being spirally distributed on the inner wall of the atomizing tube, and an air intake pipe connected to the surface of the atomizing tube.

[0008] As a preferred embodiment of this invention, a filter tube is connected to the left side of the rising membrane tube, and a coarse filter screen, a fine filter screen, and an activated carbon adsorption screen are fixedly connected from left to right inside the filter tube.

[0009] As a preferred embodiment of this invention, an electromagnetic flow meter is connected to the left side of the filter tube.

[0010] In a preferred embodiment of this invention, the direction of the air outlet of the air inlet pipe is matched with the spiral direction of the atomizing blades.

[0011] As a preferred embodiment of this invention, the surfaces of both the rising film tube and the atomizing tube are fixedly connected with a sound insulation and noise reduction layer.

[0012] In a preferred embodiment of this invention, a combustion chamber is connected to the right side of the atomizing tube, and an ignition device is provided between the atomizing tube and the combustion chamber.

[0013] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0014] 1. This utility model uses a nano-level hydrophobic coating combined with a turbulence ring to form a uniform and stable liquid film of diesel fuel on the inner wall of the riser tube, effectively reducing the adhesion between diesel fuel and the tube wall and reducing flow resistance. The spirally distributed atomizing blades work in conjunction with the air intake pipe to use the shearing effect of the airflow to tear the liquid film a second time. Compared with traditional pressure atomization, the average atomized particle size of diesel fuel can be reduced by more than 40%, and the uniformity of oil-air mixing can be increased to 85%, which significantly improves combustion efficiency and reduces the emission of incomplete combustion products such as carbon monoxide and hydrocarbons. This device has the advantages of being easy to use and having a good atomization effect.

[0015] 2. This utility model, through the setting of filter tube, coarse filter screen, fine filter screen and activated carbon adsorption screen, the coarse filter screen can filter out larger particulate impurities in diesel, the fine filter screen further filters out smaller particles, and the activated carbon adsorption screen adsorbs organic impurities such as colloids and pigments in diesel, effectively reducing the entry of impurities into the riser tube and atomizing tube, reducing the risk of blockage, and improving the cleanliness of diesel, which helps to improve combustion quality. Attached Figure Description

[0016] Figure 1This is a schematic diagram of the structure of this utility model;

[0017] Figure 2 This is a front sectional view of the atomizing tube structure of this utility model;

[0018] Figure 3 This is a front sectional view of the filter tube structure of this utility model;

[0019] Figure 4 This is a front sectional view of the rising membrane tube structure of this utility model.

[0020] In the diagram: 1. Rising film tube; 2. Atomizing tube; 3. Nanoscale hydrophobic coating; 4. Turbulence ring; 5. Atomizing blades; 6. Inlet pipe; 7. Filter tube; 8. Coarse filter screen; 9. Fine filter screen; 10. Activated carbon adsorption screen; 11. Electromagnetic flow meter. Detailed Implementation

[0021] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0022] like Figures 1 to 4 As shown, a diesel rising film combustion atomization device includes a rising film tube 1, an atomizing tube 2 connected to the right side of the rising film tube 1, a nano-level hydrophobic coating 3 on the inner wall of the rising film tube 1, a turbulence ring 4 fixedly connected to the inner wall of the nano-level hydrophobic coating 3, and several turbulence rings 4, and atomizing blades 5 fixedly connected to the inner wall of the atomizing tube 2, the atomizing blades 5 being distributed in a spiral shape on the inner wall of the atomizing tube 2, and an air intake pipe 6 connected to the surface of the atomizing tube 2.

[0023] refer to Figure 3 The left side of the rising membrane tube 1 is connected to the filter tube 7, and the inside of the filter tube 7 is fixedly connected from left to right to the coarse filter screen 8, the fine filter screen 9 and the activated carbon adsorption screen 10.

[0024] As a technical optimization of this utility model, by setting up a filter tube 7, a coarse filter screen 8, a fine filter screen 9 and an activated carbon adsorption screen 10, the coarse filter screen 8 can filter out larger particulate impurities in diesel fuel, the fine filter screen 9 further filters out smaller particles, and the activated carbon adsorption screen 10 adsorbs organic impurities such as colloids and pigments in diesel fuel, effectively reducing the entry of impurities into the riser tube 1 and atomizing tube 2, reducing the risk of blockage, and improving the cleanliness of diesel fuel, which helps to improve combustion quality.

[0025] refer to Figure 1An electromagnetic flowmeter 11 is connected to the left side of the filter tube 7.

[0026] As a technical optimization of this utility model, by setting up the electromagnetic flowmeter 11, the surface of the air intake pipe 6 can also be connected to the electromagnetic flowmeter 11. The electromagnetic flowmeter 11 accurately measures the real-time flow of diesel and air and transmits the data to the control system. The control system automatically adjusts the opening of the solenoid valve of the oil inlet pipe and the opening of the pneumatic valve of the air intake pipe 6 according to actual working conditions, such as load changes, to achieve the optimal oil-air mixing ratio and further improve combustion efficiency. The electromagnetic flowmeter 11 and the control system are both common existing technologies and are common knowledge to those skilled in the art, and will not be described in detail in this application.

[0027] refer to Figure 2 The direction of the air outlet of the air inlet pipe 6 is matched with the spiral direction of the atomizing blade 5.

[0028] As a technical optimization of this utility model, by matching the air outlet direction of the air inlet pipe 6 with the spiral direction of the atomizing blade 5, the incoming air can be fully mixed with the initially atomized diesel fuel, further refining the diesel fuel droplets and improving the atomization effect.

[0029] refer to Figure 1 Both the rising film tube 1 and the atomizing tube 2 are fixedly connected with sound insulation and noise reduction layers.

[0030] As a technical optimization of this utility model, the sound insulation and noise reduction layer is set up. The sound insulation and noise reduction layer adopts a composite sound-absorbing material, such as a double-layer structure of damping rubber and porous sound-absorbing cotton, which can suppress the fluid noise and mechanical vibration noise generated during equipment operation. The noise reduction effect reaches 25-30dB (A), which significantly improves the working environment. The sound insulation and noise reduction layer is not shown.

[0031] refer to Figure 1 The right side of the atomizing tube 2 is connected to the combustion chamber, and an ignition device is installed between the atomizing tube 2 and the combustion chamber.

[0032] As an optimized technical solution of this utility model, the combustion chamber and ignition device are configured such that the ignition device is located between the atomization chamber and the combustion chamber to ignite the atomized diesel-air mixture. The ignition device uses a high-energy igniter, capable of generating a high-intensity electric spark in a short time, ensuring reliable ignition of the mixture. The combustion chamber accommodates the combustion process, has a large internal space, and possesses good heat insulation properties. The inner wall of the combustion chamber is made of high-temperature and corrosion-resistant materials to ensure long-term stable operation in high-temperature combustion environments. Both the combustion chamber and ignition device are common existing technologies, therefore, they will not be described in detail in this application, nor are they shown in the accompanying drawings.

[0033] The working principle and usage process of this utility model are as follows: During use, diesel fuel enters the riser tube 1 through the electromagnetic flowmeter 11 and the filter tube 7. Under the action of gravity and the pressure of the inlet pipe, a uniform liquid film is formed on the inner wall of the riser tube 1. As the diesel fuel flows in the riser tube 1, the liquid film gradually moves downward. When the diesel fuel with the liquid film enters the atomizing tube 2, it is stretched and torn by the spiral guidance of the atomizing blades 5, forming initially atomized diesel droplets. At the same time, the air inlet pipe 6 introduces air into the atomizing tube 2. The air and the initially atomized diesel fuel are fully mixed in the atomizing chamber. Due to the high-speed flow and shearing action of the air, the diesel droplets are further refined, improving the atomization effect.

[0034] The nano-scale hydrophobic coating 3 and the turbulence ring 4 work synergistically. The nano-scale hydrophobic coating 3, with its superhydrophobic properties, significantly reduces the adhesion between diesel fuel and the inner wall of the riser pipe 1, reducing flow resistance and making it easier for diesel fuel to form a uniform and stable liquid film on the pipe wall. Meanwhile, the turbulence ring 4 changes the flow state of diesel fuel, increases the surface disturbance of the liquid film, further promotes the spread of diesel fuel on the pipe wall and makes the liquid film thickness more uniform. The combination of the two effectively improves the initial film quality of diesel fuel, laying the foundation for subsequent efficient atomization and complete combustion. At the same time, the hydrophobic coating can also reduce diesel fuel residue, reduce the risk of scaling, and extend the service life of the equipment.

[0035] The fully atomized and mixed diesel-air mixture reaches the ignition device, which generates a high-intensity electric spark to ignite the mixture. The ignited flame enters the combustion chamber, where it undergoes complete combustion, releasing a large amount of heat energy.

[0036] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0037] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A diesel rising film combustion atomizing device, comprising a rising film tube (1), characterized in that: The right side of the rising film tube (1) is connected to an atomizing tube (2). The inner wall of the rising film tube (1) is provided with a nano-scale hydrophobic coating (3). The inner wall of the nano-scale hydrophobic coating (3) is fixedly connected to a turbulence ring (4). There are several turbulence rings (4). The inner wall of the atomizing tube (2) is fixedly connected to an atomizing blade (5). There are several atomizing blades (5). The atomizing blades (5) are spirally distributed on the inner wall of the atomizing tube (2). The surface of the atomizing tube (2) is connected to an air inlet tube (6).

2. The diesel fuel rising film combustion atomizing device according to claim 1, characterized in that: The left side of the rising membrane tube (1) is connected to a filter tube (7), and the inside of the filter tube (7) is fixedly connected from left to right to a coarse filter screen (8), a fine filter screen (9) and an activated carbon adsorption screen (10).

3. The diesel fuel rising film combustion atomizing device according to claim 2, characterized in that: An electromagnetic flowmeter (11) is connected to the left side of the filter tube (7).

4. The diesel fuel rising film combustion atomizing device according to claim 1, characterized in that: The direction of the air outlet of the air inlet pipe (6) matches the spiral direction of the atomizing blade (5).

5. The diesel fuel rising film combustion atomizing device according to claim 1, characterized in that: The surfaces of both the rising film tube (1) and the atomizing tube (2) are fixedly connected with sound insulation and noise reduction layers.

6. The diesel fuel rising film combustion atomizing device according to claim 1, characterized in that: The right side of the atomizing tube (2) is connected to the combustion chamber, and an ignition device is provided between the atomizing tube (2) and the combustion chamber.

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