CN211260796U

CN211260796U - Temperature-adjusting flame-adjusting burner

Info

Publication number: CN211260796U
Application number: CN201922003149.6U
Authority: CN
Inventors: 张连华; 张晖
Original assignee: Zhongjuxin Ocean Engineering Equipment Co ltd; Zhongke Juxin Clean Energy and Hot Forging Equipment Research and Development Co Ltd
Current assignee: Zhongjuxin Ocean Engineering Equipment Co ltd; Zhongke Juxin Clean Energy and Hot Forging Equipment Research and Development Co Ltd
Priority date: 2019-11-19
Filing date: 2019-11-19
Publication date: 2020-08-14
Anticipated expiration: 2029-11-19

Abstract

The utility model relates to a gas heating furnace is with adjusting temperature and adjusting flame combustor. The traditional burner design structure has the defects that the temperature adjustment and flame adjustment are not satisfactory, and particularly, the flame adjustment effect is poor, so that the temperature adjustment capability is not enough; secondly, the power regulation range is small. The utility model discloses set the inside and outside two-layer double entry pipe of the outside combustion improver pipe of combustor to mutual cover and put, set the inlayer pipe into the inlet end diameter and be greater than the loudspeaker form of giving vent to anger end diameter, and the air inlet of two pipes including the outside sets up the weight control valve, and the volume of pipe combustion improver inside and outside the regulation and control gets into to the speed and the flow of inlayer pipe and outer pipe spun combustion improver have been controlled. The utility model has the advantages of reasonable design, simple structure, large power regulation range, free control of flame combustion temperature and combustion state, energy conservation, environmental protection and the like.

Description

Temperature-adjusting flame-adjusting burner

Technical Field

The utility model relates to a combustor for gas furnace especially relates to a can adjust combustion temperature and burning flame's combustor, belongs to combustion apparatus technical field.

Background

The gas stove is a common heating device in industrial production, and transfers the energy of gas to the heated workpiece through combustion conversion, so that the temperature of the workpiece is raised to meet the requirement of working condition, and the energy conversion and transfer process is realized by burning the gas through a burner. The burner is a heat energy device which can send fuel and air into the furnace chamber according to the required concentration, speed, turbulence and mixing mode to stabilize ignition combustion. In industrial production, metal materials need heat treatment such as forging, normalizing, tempering, quenching and tempering, the temperature of heated workpieces is different, the heating temperature is usually 150-1350 ℃, and in order to meet the working condition requirements of different combustion temperatures, various high-temperature, medium-temperature and low-temperature heating furnaces are designed. According to the requirement of industrial production for heating workpieces, a multipurpose furnace with high and low temperature heating capability is desired, but the existing heating furnace cannot be applied to the multipurpose furnace due to insufficient adjusting capability of a burner, and the following defects mainly exist: firstly, the same heating furnace cannot meet the working condition requirement of large load difference, and the temperature adjusting range is small; secondly, the combustion process is difficult to control, because the combustion of the gas generally adopts air as a combustion improver, and the air contains a large amount of nitrogen, nitrogen oxide can be generated in the combustion process to cause environmental pollution, and the generation amount of the nitrogen oxide is sharply increased along with the rise of the combustion temperature, in order to reduce the generation of the nitrogen oxide to the maximum extent, people control the combustion temperature of the heating furnace and simultaneously solve the problem by reducing the temperature of the combustion flame as much as possible. Because the traditional burner design structure has defects, the temperature regulation and the flame regulation are not satisfactory, and particularly the flame regulation effect is poor, so that the temperature regulation capability is not enough; the heating furnace can not be used as a low-temperature furnace because the power of the burner can not be adjusted to be smaller when the workpiece is controlled to be heated to meet the low-temperature requirement, and the content of the generated nitrogen oxides is very high because the combustion temperature can not be adjusted to be lower by adjusting flame when the workpiece is controlled to be heated to meet the high-temperature requirement, so that the difficulty of subsequent environmental protection treatment is increased. Therefore, it is necessary to further optimize the function of the conventional burner for temperature and flame regulation.

Disclosure of Invention

In order to promote the regulation control ability of combustor, the utility model provides a flame combustor adjusts temperature. The combustion temperature is controlled by adjusting the flame state by adjusting and controlling the flow speed and the flow of the fuel gas and the combustion improver in different combustion areas, and meanwhile, the requirements of different working conditions are met and the generation of pollutants is reduced.

In order to achieve the above object, the present invention provides a temperature-adjusting flame-adjusting burner, which comprises a combustion improver channel and a gas channel, wherein the combustion improver channel consists of a central combustion improver channel and an outer combustion improver channel, the central combustion improver channel is a first combustion improver channel and comprises a central combustion improver conduit and a control valve, the central combustion improver conduit is used for guiding combustion improver, and the control valve controls the flow rate and the flow speed of the combustion improver flowing through the central combustion improver conduit; the gas channel contains gas pipe and control valve, the gas pipe cover is put in the central combustion improver pipe outside, the intermediate layer between two pipes is used for water conservancy diversion gas, control valve control flow through gas flow and velocity of flow in the gas pipe, its characterized in that: the outer combustion improver channel comprises a compound combustion improver conduit, a control valve and a component control valve, the compound combustion improver conduit is an inner conduit and an outer conduit which are sleeved with each other, the inner conduit is sleeved on the outer side of the fuel gas conduit, an interlayer between the two conduits forms a second combustion improver channel for guiding the combustion improver, the outer conduit is sleeved on the outer side of the inner conduit, an interlayer between the two conduits forms a third combustion improver channel for guiding the combustion improver, the control valve controls the total amount and the flow rate of the combustion improver flowing through the second combustion improver channel and the third combustion improver channel, and the component control valve respectively regulates and controls the flow rate and the flow rate of the combustion improver entering the second combustion improver channel and the third combustion improver channel; the inner layer conduit is a horn-shaped conduit with the diameter of the inlet end conduit larger than that of the outlet end conduit.

In some embodiments, the inner conduit is frustum-shaped, and the generatrix of the frustum is a straight line.

In some embodiments, the inner conduit is formed by connecting a plurality of cylindrical conduits with different diameters, and the diameters of the cylindrical conduits gradually decrease from the gas inlet end to the gas outlet end.

Furthermore, the inner-layer conduit is formed by connecting two-end frustum-shaped middle columnar multi-stage conduits.

In some embodiments, the inner side walls of the inner layer conduit and the outer layer conduit are provided with spiral air deflectors, and the combustion improver passes through the second combustion improver channel and the third combustion improver channel to form a spiral air column.

Furthermore, the helix angle of the helical air deflector is set between 15 degrees and 30 degrees.

The utility model discloses in setting up, the combustion improver is from the center of combustor and the multistage combustion improver of supplying with of outside to the gas blowout end respectively, and the gas is spout between the inside and outside combustion improver for carry out torrent mixing reflux combustion between gas and the combustion improver, realize the abundant stable combustion of gas. The outer combustion improver conduit is arranged into an inner-layer composite conduit and an outer-layer composite conduit which are mutually sleeved, the inner-layer conduit is arranged into a trumpet shape with the diameter of the air inlet end larger than that of the air outlet end, and the air inlets of the inner-layer conduit and the outer-layer conduit are provided with component control valves for regulating and controlling the quantity of the combustion improver entering the inner-layer conduit and the outer-layer conduit, so that the speed and the flow of the combustion improver sprayed out from the inner-layer conduit and the outer-layer conduit are controlled, and on one hand, the purposes of controlling the combustion; on the other hand, the combustion power adjusting range of the combustor is enlarged; on the other hand, the gas can be adjusted to be completely combusted, so that the generation amount of nitrogen oxides is reduced, and the improvement of a special heating furnace into a multipurpose heating furnace is strongly supported.

The utility model has the advantages of reasonable design, simple structure, large power regulation range, free control of flame combustion temperature and combustion state, energy conservation, environmental protection and the like.

Drawings

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

In the drawings: 1 is a central combustion improver conduit, 2 is a gas conduit, 3 is an inner conduit, 4 is an outer conduit, 5 is a hinge shaft, 6 is a control valve plate, a is coal gas and b is air.

Detailed Description

Fig. 1 shows an embodiment of the present invention.

In the embodiment, the medium of the fuel gas shown as a in the figure is coal gas, the medium of the combustion improver shown as b in the figure is air,

as shown in the attached figure 1, air b is respectively sprayed into a hearth from a central combustion improver conduit 1, an inner layer conduit 3 and an outer layer conduit 4, and coal gas a is sprayed into the hearth from a gas conduit 2 and is subjected to turbulent mixing and backflow combustion. The control valve arranged on the central combustion improver conduit 1 controls the flow and the flow rate of air entering the central combustion improver conduit 1, the control valve arranged on the gas conduit 2 controls the gas flow and the flow rate entering the gas conduit 2, the control valves arranged on the inner conduit 3 and the outer conduit 4 control the total air inflow and the flow rate entering the inner conduit 3 and the outer conduit 4, and the component control valves arranged at the air inlet ends of the inner conduit 3 and the outer conduit 4 control and regulate the air flow and the flow rate entering the inner conduit 3 and the outer conduit 4. The air flow sprayed by the inner layer conduit 3 and the outer layer conduit 4 is adjusted, namely the combustion temperature is adjusted; the flow rate of the air ejected from the inner layer duct 3 and the outer layer duct 4 is adjusted, that is, the flame of combustion is adjusted.

The utility model discloses well inlayer pipe 3 sets to the loudspeaker tube-shape, makes the air flow rate of blowout inlayer pipe 3 bigger, and control valve plate 6 in the weight control valve can rotate around hinge pin 5, as under the state of picture, when 6 anticlockwise rotations of control valve plate: the flow rate of the air entering the inner conduit 3 is reduced, and the speed and the flow rate of the air sprayed out of the inner conduit 3 are both reduced; the air flow into the outer duct 4 increases and both the velocity and the flow of the air ejected from the outer duct 4 increase. Conversely, when the control valve plate 6 rotates clockwise: the flow rate of air entering the inner duct 3 increases, the velocity and flow rate of air ejected from the inner duct 3 increases, the flow rate of air entering the outer duct 4 decreases, and the velocity and flow rate of air ejected from the outer duct 4 decreases.

Claims

1. A temperature-adjusting flame-adjusting burner comprises a combustion improver channel and a fuel gas channel, wherein the combustion improver channel consists of a central combustion improver channel and an outer combustion improver channel; the gas channel contains gas pipe and control valve, the gas pipe cover is put in the central combustion improver pipe outside, the intermediate layer between two pipes is used for water conservancy diversion gas, control valve control flow through gas flow and velocity of flow in the gas pipe, its characterized in that: the outer combustion improver channel comprises a compound combustion improver conduit, a control valve and a component control valve, the compound combustion improver conduit is an inner conduit and an outer conduit which are sleeved with each other, the inner conduit is sleeved on the outer side of the fuel gas conduit, an interlayer between the two conduits forms a second combustion improver channel for guiding the combustion improver, the outer conduit is sleeved on the outer side of the inner conduit, an interlayer between the two conduits forms a third combustion improver channel for guiding the combustion improver, the control valve controls the total amount and the flow rate of the combustion improver flowing through the second combustion improver channel and the third combustion improver channel, and the component control valve respectively regulates and controls the flow rate and the flow rate of the combustion improver entering the second combustion improver channel and the third combustion improver channel; the inner layer conduit is a horn-shaped conduit with the diameter of the inlet end conduit larger than that of the outlet end conduit.

2. A temperature and flame modulated burner as in claim 1, wherein: the inner layer conduit is frustum-shaped, and a generatrix of the frustum is a straight line.

3. A temperature and flame modulated burner as in claim 1, wherein: the inner layer conduit is formed by connecting a plurality of columnar conduits with different diameters, and the diameters of the conduits from the air inlet end to the air outlet end are gradually reduced.

4. A temperature and flame burner as claimed in claim 1 or 3, wherein: the inner layer conduit is formed by connecting two end frustum middle columnar multi-stage conduits.

5. A temperature and flame modulated burner as in claim 1, wherein: and spiral air deflectors are arranged on the inner side walls of the inner-layer guide pipe and the outer-layer guide pipe, and the combustion improver passes through the second combustion improver channel and the third combustion improver channel to form a spiral air column.

6. A temperature and flame regulated burner as claimed in claim 5, wherein: the helix angle of the helical air deflector is set between 15 degrees and 30 degrees.