CN107062205B - High-efficiency mixed, uniform-combustion and wall self-cooling gas fuel combustion device - Google Patents

Abstract

The invention discloses a high-efficiency mixed and uniform-combustion wall self-cooling gas fuel combustion device, which comprises a combustor body, a combustion chamber, a vent pipe, a gas flowmeter, a gas valve, an air compressor and a fuel tank, wherein the combustion chamber is positioned in the center of the combustor body, the cross section of the combustion chamber is windmill-shaped, the bottom of the combustor is provided with four vent pipes with different directions, and the four vent pipes are respectively connected to the four end surfaces of the combustion chamber; wherein two vent pipes in opposite directions are connected with the air compressor, and the other two vent pipes are connected with the fuel tank. The invention not only reduces the forest resource consumption, protects the local ecological environment, but also improves the living environment and the living quality of the masses, and is a key link for solving the energy problem and promoting the virtuous circle of the whole country.

Description

A high-efficiency mixing, uniform combustion, wall self-cooling gas fuel combustion device

technical field

The invention relates to a combustion device, in particular to a high-efficiency mixing, uniform combustion and self-cooling gas fuel combustion device on the wall.

technical background

Now the country has been advocating energy conservation and emission reduction. Automobile exhaust and harmful gases emitted by power plants will cause great harm to the human body and the environment. At the same time, energy shortage requires continuous reduction of fuel consumption of gas turbines. Rotating flames are famous for their catastrophic threat to people's lives and the environment, that is, their vortex properties. However, this property can make the fuel and air mix evenly, and the temperature of the flame is not high in the area close to the wall (that is, the wall is self-cooling, reducing energy waste), reducing pollutant emissions and improving fuel combustion efficiency. It represents an untapped potential to effectively suppress the production of nitrogen oxides.

Contents of the invention

The invention provides a gas fuel combustion device, which has the characteristics of high and uniform combustion efficiency in the simulation process, and the inner wall of the combustion chamber can be self-cooled, which reduces heat loss and also has the characteristics of ultra-low emission. This device can be applied to power plants and propulsion systems in engineering practice. This kind of strong swirl diffusion combustion strengthens heat and mass transfer, and swirl combustion with high efficiency and low pollution is of great significance to today's energy saving and environmental protection requirements.

The technical solution adopted in the present invention is: a high-efficiency mixing, uniform combustion, and self-cooling gas fuel combustion device on the wall, including a burner body, a combustion chamber, a vent pipe, an air compressor and a fuel tank. .

Further, the top of the combustion chamber is open and the bottom is closed.

Further, the inside of the vent pipe is provided with an internal thread, and a vent hose is provided between the vent pipe, the air compressor and the fuel bottle, and the vent hose and the vent pipe are threaded.

Further, air valves are arranged in the ventilation hose, and a gas flow meter is arranged next to each air valve.

The beneficial effects produced by the invention are: the invention not only reduces the consumption of forest resources, protects the local ecological environment, but also improves the living environment and the quality of life of the masses, and is a key link in solving energy problems and promoting a virtuous cycle across the country.

Description of drawings

Fig. 1 is the structural representation of burner body;

Fig. 2 is a structural relationship diagram of the present invention.

Detailed ways

The invention will be further described below in conjunction with the accompanying drawings.

As shown in Figure 1 and Figure 2, the present invention is a high-efficiency mixing, uniform combustion, wall self-cooling gas fuel combustion device, which has the characteristics of high combustion efficiency and uniform combustion. The device comprises a burner body 1, a fuel tank 8 and an air compressor 9, wherein the middle part of the burner body 1 is provided with a windmill-shaped combustion chamber 2, each side of the burner body 1 is rectangular in shape, and each side is identical; the top of the combustion chamber 2 is open and the bottom is closed, and four ventilation pipes are arranged at the bottom of the combustion chamber 2, and the above four ventilation pipes are respectively connected to the four end faces of the wind turbine combustion chamber 2, so that the four ventilation pipes are arranged in four directions respectively. The first vent pipe 3 and the second vent pipe 4 are connected to the fuel tank 8 respectively, and the third vent pipe 5 and the fourth vent pipe 6 are connected to the air compressor 9 respectively. The vent pipe is provided with an internal thread for directly threading the vent hose 10 to the vent pipe to ensure the airtightness between the vent pipe and the fuel tank 8 or the air compressor 9 . In order to control the flow rate of the gas, an air valve 11 and a gas flow meter 7 are provided on each vent hose 10 .

The following is an embodiment of the present invention. In this embodiment, the burner is a cuboid with a length of 120 mm, a width of 120 mm, and a height of 240 mm. It is made of No. 45 steel material. Considering that the device is usually used in the northern hemisphere, due to the effect of the geostrophic deflection force, the direction of the air intake in the combustion chamber is counterclockwise. The ventilation pipes at the bottom of the combustion chamber are all cuboids, the length of the cross section is 6 mm, the width is 2 mm, and the air intake path is 46 mm. The fuel in the fuel tank is methane gas with a purity of 99.99%, and the combustion aid is air. The methane gas is discharged into the combustion chamber from two opposite vent pipes, the air comes out from the compressor through the other two relative vent pipes and enters the combustion chamber, the two gases enter the combustion chamber tangentially, the gases are mixed along the directions of their respective arcs in the windmill-like combustion chamber, and the exhaust gas after combustion is discharged from the top of the combustion chamber.

Before burning, let the igniter wait above the combustion space, and the air and methane gas respectively enter their respective vent pipes with a rectangular cross-section. After ignition, the flame begins to rotate around the vertical axis of the geometric center of the combustion chamber. The forced convection of the methane gas and the air in the burner strengthens the turbulence of the two gases, so that the fuel is mixed evenly during the combustion process, and the combustion efficiency is enhanced. For gaseous fuels with different calorific values, the flow rate of gas can be controlled so that the mass flow ratio between gaseous fuel and air can reach the optimum value for efficient combustion.

The biggest advantage of the present invention is exactly to strengthen the combustion efficiency of fuel and reduce the emission of nitrogen oxides; The improvement of combustion efficiency is because the mixing uniformity of fuel is strengthened, thereby makes the mixing of fuel and air more sufficient; The reduction of nitrogen oxide emissions is mainly because the temperature of the flame close to the side of the combustion chamber avoiding the surface does not reach the temperature condition for generating nitrogen oxides during the combustion process of the burner. The invention is suitable for heavy-duty gas turbine generator sets or automobile engines and the like.

Claims (3)

1. A high-efficiency mixing, uniform combustion, wall surface self-cooling gas fuel combustion device is characterized in that: comprising a burner body, a combustion chamber, a vent pipe, an air compressor and a fuel tank, the combustion chamber is located at the center of the burner body, the cross-section of the combustion chamber is windmill-shaped, four vent pipes in different directions are arranged at the bottom of the burner, and the four vent pipes are respectively connected to the four end faces of the combustion chamber; wherein two vent pipes in opposite directions are connected with the air compressor, and the other two vent pipes are connected with the fuel tank; The top is open and the bottom is closed. 2. A high-efficiency mixing, uniform combustion, and wall self-cooling gas fuel combustion device according to claim 1, characterized in that: the inside of the vent pipe is provided with an internal thread, and a vent hose is provided between the vent pipe, the air compressor and the fuel bottle, and the vent pipe and the vent pipe are threaded. 3. A high-efficiency mixing, uniform combustion, wall self-cooling gas fuel combustion device according to claim 2, characterized in that: said ventilation hose is provided with gas valves, and a gas flow meter is provided next to each gas valve.