CN213840915U

CN213840915U - Miniature low-heat value gas burner

Info

Publication number: CN213840915U
Application number: CN202022056962.2U
Authority: CN
Inventors: 徐天彤; 齐甜
Original assignee: Hebei Fangju Automation Equipment Technology Co ltd
Current assignee: Hebei Fangju Automation Equipment Technology Co ltd
Priority date: 2020-09-18
Filing date: 2020-09-18
Publication date: 2021-07-30
Anticipated expiration: 2030-09-18

Abstract

The utility model discloses a micro low-heat value gas burner, which comprises a combustion chamber, a gas inlet pipe and an air inlet pipe; the combustion chamber is of a cylindrical structure, one end of the combustion chamber is communicated with the gas inlet pipe, the other end of the combustion chamber is provided with an opening, and an infrared filter screen is arranged at the opening; the gas inlet pipe is provided with a gas pipe control valve; the air inlet pipe is communicated with a gas inlet pipe between the gas pipe control valve and the combustion chamber, and the air inlet pipe is provided with an air control valve; an explosion-proof filler is arranged in a fuel gas inlet pipe between the air inlet pipe and the combustion chamber; the explosion-proof filler is of a net structure. The utility model discloses an explosion-proof filler mixes low heat value gas and air, because explosion-proof filler is network structure, and low heat value gas and air are cut apart into countless parts when passing through, because very tiny of cutting apart for gas hardly forms the required air-fuel ratio of burning, has played the effect that prevents gas combustion or explosion from this point on.

Description

Miniature low-heat value gas burner

Technical Field

The utility model relates to a gas combustion chamber, especially a miniature low heat value gas burner.

Background

The common low-heat value gas fuel in the industry at present mainly comprises low-heat value tail gas in a chemical process, blast furnace gas, smelting tail gas in a petrochemical industry, low-concentration gas in a coal mine and the like. In addition H produced by biomass through pyrolysis gasification₂、CO、N₂、CO₂、CH₄Combustible gas with equal components, biogas generated in the breeding industry, and combustible gas mainly comprising CH4 and CO2 generated by landfill also belong to low-calorific-value gas. How to simply and efficiently realize the stable combustion of low-calorific-value gas, reduce the environmental problems caused by direct discharge, realize the efficient and clean utilization of gas energy, and become a difficult problem which puzzles the combustion boundary. Part of technical personnel propose to adopt the mode that the double vortex structure burns gas and combustion-supporting air mixture to realize the purpose of intensive combustion and stable flame. However, with this structure, a large space is required to accommodate the double swirl vanes; and the double helix structure is not safe because the high speed rotation of the blades may cause sparks to ignite combustion-supporting gas. Moreover, since the low heating value gas itself is burnt, it is easy to extinguish fire because the heating value of the gas is too low.

SUMMERY OF THE UTILITY MODEL

The to-be-solved technical problem of the utility model is to provide a simple, safe, high-efficient, stable miniature low calorific value gas burner.

In order to solve the technical problem, the utility model discloses the technical scheme who takes is:

a miniature low-heat value gas burner comprises a combustion chamber, a gas inlet pipe and an air inlet pipe; the combustion chamber is of a cylindrical structure, one end of the combustion chamber is communicated with the gas inlet pipe, the other end of the combustion chamber is provided with an opening, and an infrared filter screen is arranged at the opening; the gas inlet pipe is provided with a gas pipe control valve; the air inlet pipe is communicated with a gas inlet pipe between the gas pipe control valve and the combustion chamber, and the air inlet pipe is provided with an air control valve; an explosion-proof filler is arranged in a fuel gas inlet pipe between the air inlet pipe and the combustion chamber; the explosion-proof filler is of a net structure.

In the miniature low-calorific-value gas burner, the anti-explosion filler is a copper net, an aluminum net or a stainless steel net.

In the miniature low-calorific-value gas burner, the mesh diameter of the infrared filter screen is 0.5-1.5 mm.

In the miniature low-calorific-value gas burner, the inner diameter of the combustion chamber is 15-45 mm; the height is 15-35 mm.

Adopt the produced beneficial effect of above-mentioned technical scheme to lie in: the utility model adopts the explosion-proof filler to mix the low heat value gas with the air, and because the explosion-proof filler is of a net structure, the low heat value gas and the air are divided into countless small parts when passing through; because the division is fine, the air-fuel ratio required by combustion of the gas is difficult to form, and the effect of preventing the gas from being combusted or exploded is achieved. And, the low calorie gas and air are divided into innumerable small portions while passing through the explosion-proof packing, so that they are mixed more uniformly.

The utility model discloses an infrared filter screen, when gas combustion in the combustion chamber, the endothermic temperature risees, and the temperature is far above the ignition temperature that the gas needs. After the low-heat value gas is burnt for a period of time, when new gas enters the combustion chamber, the gas can be ignited again by utilizing the residual temperature of the infrared filter screen, so that the energy is saved.

The utility model has the characteristics of simple structure, high efficiency, stable safety and the like.

Drawings

The present invention will be described in further detail with reference to the accompanying drawings and specific embodiments.

Fig. 1 is a schematic structural diagram of the present invention.

The reference numerals in the figures denote: 1. a combustion chamber; 2. a gas inlet pipe; 3. an air inlet pipe; 4. a gas pipe control valve; 5. an air control valve; 6. an infrared filter screen; 7. an explosion-proof filler.

Detailed Description

Referring to fig. 1, the utility model discloses a combustion chamber 1, gas intake pipe 2, air intake pipe 3, gas pipe control valve 4, air control valve 5, infrared filter screen 6 and explosion-proof filler 7. The combustion chamber 1 is of a cylindrical structure, and the diameter of the combustion chamber is 15-45 mm; the height is 15-35mm, one end of the combustion chamber 1 is provided with an opening, the opening is provided with an infrared filter screen 6, and the mesh diameter of the infrared filter screen 6 is 0.5-1.5 mm; the other end is communicated with the air outlet end of the fuel gas inlet pipe 2. The infrared filter screen 6 can absorb infrared heat and obtain heat by contacting with a combustion object in the gas combustion process, the overall temperature of the infrared filter screen 6 is raised and the heat is stored until the temperature of the infrared filter screen 6 is higher than the temperature of flame combustion, and at the moment, the temperature of the infrared filter screen 6 is higher than the temperature required by gas ignition; when the gas does not enter, the combustion is interrupted, and the infrared filter screen 6 is gradually cooled; if new gas is introduced into the combustion chamber 1 within a short time, the residual temperature of the infrared filter 6 will ignite the gas. The gas inlet pipe 2 is also provided with a gas pipe control valve 4 for controlling low-calorific-value gas to enter the combustion chamber 1. The air inlet pipe 3 is further provided with an air control valve 5 for controlling the air intake into the combustion chamber 1. The air inlet pipe 3 is connected to the gas inlet pipe 2 between the gas pipe control valve 4 and the combustion chamber 1; for supplying air to the combustion chamber 1. The explosion-proof filler 7 is arranged in the gas inlet pipe 2 between the air inlet pipe 3 and the combustion chamber 1; the explosion-proof filler 7 is a net structure, preferably a copper net, an aluminum net or a stainless steel net. The explosion-proof filler 7 is used for dividing the passing low-calorific-value gas and air into small parts, and the gas divided into the small parts can be mixed more uniformly; and because the gas is divided into small parts, the air-fuel ratio required by combustion is difficult to form, so that the mixing process is safer, and the explosion-proof effect is achieved. The gas pipe control valve 4 and the air control valve 5 are used to regulate the flow of gas and air and to prevent backflow.

The utility model discloses a use does: and simultaneously opening the gas pipe control valve 4 and the air control valve 5, introducing air into the air inlet pipe 3, introducing low-calorific-value gas into the air control valve 5, and separating the air and the low-calorific-value gas into small parts for mixing through the explosion-proof filler 7. The mixed gas enters the combustion chamber 1, the igniter ignites the gas, the mixed gas is combusted in the combustion chamber 1 to emit heat, and the combusted gas passes through the infrared filter screen 6 and then goes out of the combustion chamber 1. The infrared filter screen 6 absorbs infrared heat, the whole temperature of the infrared filter screen 6 rises and stores the heat until the temperature of the infrared filter screen 6 is higher than the temperature of flame combustion, and at the moment, the temperature of the infrared filter screen 6 is higher than the temperature required by gas ignition. When the gas is not entering, the combustion is interrupted, and the infrared filter screen 6 is gradually cooled. If new gas is introduced into the combustion chamber 1 within a short time, the residual temperature of the infrared filter 6 will ignite the gas.

Claims

1. A miniature low heating value gas burner which is characterized in that: comprises a combustion chamber (1), a gas inlet pipe (2) and an air inlet pipe (3); the combustion chamber (1) is of a cylindrical structure, one end of the combustion chamber is communicated with the gas inlet pipe (2), the other end of the combustion chamber is provided with an opening, and an infrared filter screen (6) is arranged at the opening; the gas inlet pipe (2) is provided with a gas pipe control valve (4); the air inlet pipe (3) is communicated with the gas inlet pipe (2) between the gas pipe control valve (4) and the combustion chamber (1), and the air inlet pipe (3) is provided with an air control valve (5); an explosion-proof filler (7) is arranged in the gas inlet pipe (2) between the air inlet pipe (3) and the combustion chamber (1); the explosion-proof filler (7) is of a net structure.

2. The micro low heating value gas burner as set forth in claim 1, wherein: the explosion-proof filler (7) is a copper net, an aluminum net or a stainless steel net.

3. The micro low heating value gas burner as set forth in claim 1, wherein: the mesh diameter of the infrared filter screen (6) is 0.5-1.5 mm.

4. The micro low heating value gas burner as set forth in any one of claims 1 to 3, wherein: the inner diameter of the combustion chamber is 15-45 mm; the height is 15-35 mm.