Gas air mixing supercharging device

Abstract

The invention provides a fuel gas air mixing supercharging device, and relates to fuel gas combustion. The device is mainly composed of a spiral groove cone tightly attached to the cone part of the compressed air chamber, a gas mixing pressurizing pipe connected to the compressed air chamber, and a closing plate for fixing and sealing the compressed air chamber and the spiral groove cone. The compressed air flow valve is connected to the compressed air chamber through a compressed air inlet pipe; and the gas flow valve is connected to the spiral cone through a gas inlet pipe. Compressed air passes through a plurality of spiral hole channels formed by the spiral groove cone and the compressed air chamber, is injected into the mixed gas pressurizing pipe in a rotating state, adsorbs low-pressure fuel gas wrapping the middle hole channel of the spiral groove cone, enters the mixed pressurizing pipe together with the fuel gas, rotates in a spiral mode and is mixed, and then the mixed gas is conveyed to a combustor. The gas burner has the beneficial effects that gas and air are fully mixed, the pressure of the mixed gas is enhanced, the combustion flame is strong, the gas is completely combusted, and the beneficial effects of improving the combustion temperature and saving energy are achieved.

Description

Technical Field

[0001] A gas-air mixing and supercharging device belongs to the field of thermal processing and specifically relates to gas combustion. Background Art

[0002] For the full combustion of gas, appropriate proportions of oxygen in the air need to be fully mixed with the gas. Currently, the common practice is to collect compressed air and gas separately through different pipelines into a cavity or a pipeline for mixing. Although the method is simple, its drawbacks are that the air and gas are not evenly mixed, the pressure of the mixed gas is low, the intensity of the combustion flame is low, and the temperature cannot rise. To solve these technical problems, some patented technologies have emerged. The basic approach is to collect gas and air into a mixing cavity and then use electrically driven fan blades to stir the gas to achieve full mixing. A relatively representative technology is the patent number: CN213930929U "Converter Combustion Automatic Gas Mixing Device". The drawbacks of these patented technologies are that the mixing device has a complex structure and the pressure of the mixed gas has not been increased compared to the gas pressure. Summary of the Invention

[0003] In order to overcome the defects and deficiencies of the above background art, the gas-air mixing and supercharging device of the present invention is designed based on the principle of a jet adsorption pump. It is a device with a simple structure that can fully mix gas and air and increase the pressure of the mixed gas, solving the problems in production practice such as insufficient combustion flame intensity of gas, incomplete combustion and waste of gas, and the inability to raise the temperature of the heated object.

[0004] The pressure of the compressed air provided by the air compressor is 0.8 - 0.9 MPa, and the pressure of the gas (taking natural gas as an example) entering the household is 10 - 20 kPa. In the present invention, the compressed air is used as the jet fluid, and the gas with a lower pressure is used as the adsorbate. A closely fitting cone is installed in the compressed air chamber of the device. There are several spiral grooves along the conical surface, and these grooves serve as the channels for the compressed air. A gas inlet hole is provided in the middle of the cone. When the compressed air jets into the mixing and supercharging pipe from multiple spiral grooves, it moves in a spiral motion. At the outlet end of the gas hole and the inlet of the mixing and supercharging pipe, a negative pressure is formed. Due to the effect of the negative pressure, the gas with a lower pressure is adsorbed into the mixing pipe and rotates together with the rotating compressed air. The gas and the compressed air are fully mixed in the cavity of the mixing and supercharging pipe. Due to the action of the jet fluid (compressed air), the pressure of the mixed gas is greatly increased compared to the gas transmission pressure.

[0005] The gas-air mixing and supercharging device of the present invention to be clarified here utilizes the principle of jet adsorption, but has different characteristics compared with the existing jet pumps, that is, the invention points of this technology: 1). The jet fluid of the jet pump is directly injected into the throat through the jet nozzle (the gas inlet hole in this technical solution), generating negative pressure at the inlet end of the throat. There is a hole at the throat end connected to the adsorbed body, and the adsorbed body is inhaled under the action of negative pressure. However, in this technical solution, this hole is used as the channel for the adsorbed body rather than the jet nozzle; 2). The jet nozzle of the present invention is composed of a spiral groove cone and a compressed air chamber with multiple spiral holes converging at the cone tip. The jet fluid is multiple strands of compressed air in the form of a spiral jet, spraying to the throat end to generate negative pressure to adsorb the gas with a lower pressure, and wrapping the adsorbed body gas to rotate through the throat and make a rotational motion in the mixing chamber, so that the gas and the compressed air are fully mixed. The multiple rotating jets wrapping the adsorbed body are the prominent characteristics of the present invention and are not possessed by ordinary jet pumps.

[0006] A gas-air mixing and supercharging device mainly includes: a spiral groove cone 1, a gas mixing and supercharging pipe 2, a compressed air chamber 3, a compressed air inlet pipe 4, a compressed air flow valve 5, a blanking plate 6, a gas flow valve 7, and a gas inlet pipe 8. It is characterized in that: the conical head surface of the spiral groove cone 1 is fitted and installed in the conical hole in the compressed air chamber 4 to form multiple spiral channels for compressed air circulation. The blanking plate 6 seals the compressed air chamber 3 and fixedly seals the spiral groove cone (1) at the corresponding position of the compressed air chamber (3). One end of the compressed air inlet pipe 4 is welded to the compressed air chamber 2, and the other end is connected to the air flow valve 5 for controlling the compressed air flow. One end of the gas inlet pipe 8 is connected to the gas channel of the spiral groove cone 1, and the other end is connected to the gas flow valve 7 for controlling the gas flow; the gas mixing and supercharging pipe 2 is hermetically connected to the compressed air chamber 3.

[0007] The spiral groove cone 1 of a gas-air mixing and supercharging device is characterized by being composed of a cone and a cylinder, having a gas inlet hole in the center, with multi-start spiral grooves provided on the conical surface. The cone angle of the cone is a, and the lead of the spiral groove is T, which is closely fitted with the conical hole of the compressed air chamber 3 to form multiple spiral channels for compressed air.

[0008] The compressed air chamber 3 of a gas-air mixing and supercharging device is characterized in that its outer shape is composed of a conical head and a cylinder, and its inner hole is composed of a conical hole and a round hole corresponding to the outer shape. There is a hole for installing the compressed air inlet pipe 4 on the wall of the round hole. The cone angle a of the conical hole is consistent with the fit of the above-mentioned spiral cone 1, and forms multiple spiral channels for compressed air with the spiral groove cone 1.

[0009] A gas-air mixing and supercharging device, the mixing and supercharging pipe 2, is characterized in that its outer shape is a rotating body, and its inner hole consists of two parts. The conical opening at the entrance and the narrow-diameter hole are the throat pipes. The conical opening angle a is the same as that of the spiral groove cone 1. Its function is to compress the air and generate negative pressure when it rotates and enters, sucking in the gas with a lower pressure. The outlet is composed of a conical hole with an angle of b and a round hole. Its function is to mix and diffuse the mixed gas, and the mixed gas gradually transforms from rotational motion into linear transmission.

[0010] A blanking plate 6 of a gas-air mixing and supercharging device is characterized as an annular plate, which is butt-welded and sealed with the compressed air chamber 3 and the spiral cone 1 to compress the air.

[0011] A compressed air flow valve 5 of a gas-air mixing and supercharging device is characterized in that: preferably, a knob flow valve is adopted, and it is connected to the compressed air chamber 3 with a compressed air inlet pipe 4 to control the compressed air flow and adjust the ratio with the gas.

[0012] A gas flow valve 7 of a gas-air mixing and supercharging device is characterized in that: preferably, a knob flow valve is adopted, and it is connected to the gas passage of the spiral cone 1 with a gas inlet pipe 8 to control the gas flow.

[0013] The beneficial effects of the gas-air mixing and supercharging device of the present invention are as follows: 1) The gas and the compressed air are fully mixed, the gas burns fully, and energy is saved; 2) The mixing pressure of the gas and the air is increased, the flame of the burner is strong, and the combustion temperature is increased. Description of the Drawings

[0014] Figure 1 : Structure diagram of a gas-air mixing and supercharging device In the figure: spiral groove cone 1, mixing and supercharging pipe 2, compressed air chamber 3, compressed air inlet pipe 4, compressed air flow valve 5, blanking plate 6, gas flow valve 7, gas inlet pipe 8.

[0015] Figure 2 : External shape diagram of the spiral cone head Figure 3 : Cross-sectional view of the air chamber Figure 4 : Cross-sectional view of the mixing and supercharging pipe Detailed Description of the Invention

[0016] The following is a detailed description of the specific implementation manners of the present invention with reference to the drawings. It should be understood that the specific implementation manners described herein are only for explaining and illustrating the present invention and are not used to limit the invention.

[0017] To solve the problems of full mixing of gas and air and enhanced pressure after mixing, this technical solution provides a gas-air mixing and supercharging device, and the specific implementation plan is as follows.

[0018] According to the aboveFigure 1 The structure of a gas-air mixing and boosting device is characterized in that the spiral cone 1, the gas mixing and boosting pipe 2, the compressed air chamber 3 and the stuffy plate 6 are processed by carefully using rust-proof and corrosion-resistant metal materials, the compressed air inlet pipe 4 and the gas inlet pipe 8 are made of the same material as the above-mentioned pipes, and the gas flow valve 7 and the compressed air flow valve 5 are universal standard valves.

[0019] The cone angle of the spiral groove cone 1 and the cone angle a of the inlet of the mixing and boosting pipe 2 should be consistent with the cone angle a in the cavity of the compressed air chamber 3.

[0020] Assembly and connection: 1) The spiral groove cone 1 is inserted into the compressed air chamber 3 to make it fit, and the blocking plate 6 is put on the tail of the spiral groove cone 1 close to the end face of the compressed air chamber 3, and then the three are welded and sealed; 2) The mixed air boost pipe 2 is assembled with the compressed air chamber 3 and welded and sealed; 3) The compressed air pipe 4 is welded and sealed with the air chamber, and connected to the compressed air flow valve 5; 4) The gas intake pipe 8 is connected with the spiral groove cone 1 and the gas flow valve 7.

[0021] Debugging: 1) Connect the gas and compressed air to the gas flow valve 7 and the compressed air flow valve 5 with pipes respectively; 2) Connect the burner to the gas mixing and boosting pipe 8 with a pipe; 3) Open the gas flow valve to ignite the burner, gradually open the compressed air flow valve to mix the gas, observe the intensity of the combustion flame, and adjust the ratio of gas to compressed air.

Claims

1. A gas-air mixing and supercharging device mainly includes: Spiral groove cone (1), gas-mixed supercharging pipe (2), compressed air chamber (3), compressed air inlet pipe (4), compressed air flow valve (5), blanking plate (6), gas flow valve (7) and gas inlet pipe (8), characterized in that: the conical head surface of the spiral groove cone (1) is fitted and installed in the conical hole in the compressed air chamber (4) to form a plurality of spiral channels for compressed air flow; the blanking plate (6) seals the compressed air chamber (3) and fixedly seals the spiral groove cone (1) at the corresponding position of the compressed air chamber (3); one end of the compressed air inlet pipe (4) is hermetically connected to the compressed air chamber (2), and the other end is connected to the air flow valve (5) for controlling the compressed air flow; one end of the gas inlet pipe (8) is connected to the gas channel of the spiral groove cone (1), and the other end is connected to the gas flow valve (7) for controlling the gas flow; the gas-mixed supercharging pipe (2) is hermetically connected to the compressed air chamber (3).

2. The spiral groove cone (1) as claimed in claim 1, characterized in that It is composed of a cone and a cylinder, with a gas inlet hole in the center. Multiple-headed spiral grooves are provided on the conical surface of the cone. The cone angle of the cone is a, and the lead of the spiral groove is T. It fits tightly with the conical hole of the compressed air chamber (3) to form a plurality of spiral channels for compressed air.

3. The compressed air chamber (3) as claimed in claim 1, characterized in that Its outer shape is composed of a conical head and a cylinder, and its inner hole is composed of a conical hole and a round hole corresponding to the outer shape. There is a hole for installing the compressed air inlet pipe (4) on the wall of the round hole. The cone angle a of the conical hole fits with the above-mentioned spiral cone (1) to form a plurality of spiral channels for compressed air with the spiral groove cone (1).

4. The gas mixing and supercharging pipe (2) as claimed in claim 1, characterized in that Its outer shape is a rotating body, and its inner hole is composed of two parts. The conical opening at the inlet and the narrow-diameter hole are the throat pipes. The conical opening angle a is the same as that of the spiral groove cone (1). Its function is to generate negative pressure when compressed air rotates and enters, sucking in gas with a lower pressure. The outlet is composed of a conical hole with an angle of b and a round hole. Its function is for the mixed gas to mix and diffuse, and the mixed gas gradually transforms from rotational motion into linear transmission.

5. The blanking plate (6) as claimed in claim 1, characterized in that An annular plate, which is positioned, welded and sealed with the compressed air chamber (3) and the spiral cone (1) to seal the compressed air.

6. The compressed air flow valve (5) as claimed in claim 1, characterized in that: Preferably, a knob flow valve is adopted. The compressed air inlet pipe (4) is connected to the compressed air chamber (3) to control the compressed air flow and adjust the ratio with the gas.

7. The gas flow valve (7) as claimed in claim 1, characterized in that: Preferably, a knob flow valve is adopted. The gas inlet pipe (8) is connected to the gas channel of the spiral cone (1) to control the gas flow.

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