Spiral ring rib water-cooling type cold flame gas burner
A gas burner and spiral ring technology, applied in the direction of gas fuel burners, burners, burners, etc., can solve the problems of poor effect, unsuitable for high-pressure and supercritical boilers, and high cost, so as to reduce the combustion temperature and ensure replacement Thermal efficiency and combustion safety, effect of uniform surface combustion
Active Publication Date: 2021-12-07
XI AN JIAOTONG UNIV
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Problems solved by technology
Although the low-nitrogen combustion technology of gas-fired boilers in China has been developed to a certain extent at this stage, such as staged combustion, flue gas recirculation, lean-burn premixing, water-cooling premixing, etc., some technologies still have high cost, poor effect, and are not suitable for high pressure and Disadvantages of supercritical boilers
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[0022] The present invention will be described in further detail below in conjunction with the accompanying drawings.
[0023] refer to Figure 1-Figure 6 , a spiral ring rib water-cooled cold flame gas burner, its main structure is that the mixed air flow is composed of figure 1 The "ladder"-shaped mixed gas inlet formed by multiple sets of spiral ring ribs 8 above enters; the first-stage ring water-cooled pipe 5 is connected with multiple sets of spiral ring ribs 8 by welding to form a ribbed cooling water pipe. The spiral ring ribs 8 are arranged at an angle θ with the axis of the burner; the first-stage ring water-cooled pipes 5 are placed obliquely at equal intervals along the circumferential direction, and the installation angle is the same as the inclination angle of the spiral ring ribs 8; the multiple groups of spiral ring ribs 8 and the first-stage The surrounding cooling water pipe 5 constitutes the anti-tempering air intake microchannel 6, and the outlet constitut...
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The invention discloses a spiral ring rib water-cooling type cold flame gas burner which comprises a surface burning device and a three-stage water-cooling circulating device, wherein the surface burning device comprises multiple layers of spiral ring rib, the multiple layers of spiral ring rib and an axis of a burner are arranged at a certain angle to form a spiral step-shaped isobaric gas inlet chamber, and an ignition gun hole / central secondary air pipe is arranged on the inner sides of the multiple layers of spiral ring rib; and the three-stage water-cooling circulating device comprises a water inlet collecting box and a water outlet collecting box, the water inlet collecting box and the water outlet collecting box are connected with annular cooling water pipes to form a closed water circulating loop, the annular cooling water pipe is arranged on the spiral annular rib in a penetrating mode to form a first-stage water-cooling surface, a low U-shaped pipe bundle and a high U-shaped pipe bundle are arranged in a burning chamber to form a second-stage water-cooling surface and a third-stage water-cooling surface respectively, and a sphere-like cold flame burning surface is integrally formed. By using the spiral ring rib water-cooling type cold flame gas burner disclosed by the invention, stable, efficient, clean and safe burning of gas fuel is guaranteed, flame surface water cooling can be achieved, and a closed circulation loop is formed by cooling pipelines.
Description
technical field [0001] The invention belongs to the technical field of cold-flame gas burners, and in particular relates to a water-cooled spiral ring-rib gas burner. Background technique [0002] As a kind of clean energy, natural gas has the advantages of high combustion efficiency, low cost of pollutant control and less pollutant emission. During the combustion process of natural gas, some air pollutants such as nitrogen oxides will still be produced. According to their sources, they are mainly divided into Thermal type, fast type and fuel type, among which the generation of fuel type and fast type is almost negligible, thermal type NO x Account for more than 90% of all nitrogen oxide emissions. [0003] The key to controlling NOx emissions: one is to control the formation of nitrogen oxides, and the other is to control the reduction of already produced nitrogen oxides to N 2 . Controlling the formation of nitrogen oxides is mainly to control the combustion temperature...
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IPC IPC(8): F23D14/46F23D14/78F23L9/00
CPCF23D14/46F23D14/78F23L9/00F23D2214/00Y02E20/34
Inventor牛艳青许良商逸民
OwnerXI AN JIAOTONG UNIV