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CN-224201731-U - Gas conveying device for boiler

CN224201731UCN 224201731 UCN224201731 UCN 224201731UCN-224201731-U

Abstract

The utility model relates to the technical field of gas boilers, in particular to a gas conveying device for a boiler, which comprises a support frame, a return pipe, a gas conveying pipe group and a rotating structure, wherein the inside of the support frame is fixedly connected with a right combustion chamber, a cyclone separator is fixedly connected to one side of the inside of the support frame, which is positioned in the combustion chamber, the top of the combustion chamber is communicated with the cyclone separator through a pipeline, the return pipe is arranged between the combustion chamber and the cyclone separator, one end of the return pipe is fixedly connected with the side wall of the combustion chamber, the other end of the return pipe is fixedly connected with the bottom of the cyclone separator, the top of the cyclone separator is fixedly connected with an exhaust pipe, the bottom of the combustion chamber is provided with the gas conveying pipe group for conveying fuel gas and coal locking gas, and the rotating structure for mixing the fuel gas and the coal locking gas is arranged in the combustion chamber.

Inventors

  • WEI YONG
  • LI DAN
  • GUO XIAOYONG
  • SUN ZHIPENG
  • ZHANG LEI
  • Cao Qinhui
  • SONG PENG
  • LI LINGYAN
  • NIU XIAOQIANG
  • LI SEN
  • JIN KE
  • ZHANG WEIWEI
  • WANG LEI
  • DUAN HONGFANG

Assignees

  • 山西潞安煤基合成油有限公司

Dates

Publication Date
20260505
Application Date
20250306

Claims (8)

  1. 1. A gas delivery device for a boiler, comprising: the device comprises a support frame (1), wherein a combustion chamber (2) is fixedly connected to the inside of the support frame (1), a cyclone separator (3) is fixedly connected to one side, located in the combustion chamber (2), of the inside of the support frame (1), and the top of the combustion chamber (2) is communicated with the cyclone separator (3) through a pipeline; A return pipe (4) is arranged between the combustion chamber (2) and the cyclone separator (3), one end of the return pipe (4) is fixedly connected with the side wall of the combustion chamber (2), the other end of the return pipe (4) is fixedly connected with the bottom of the cyclone separator (3), and the top of the cyclone separator (3) is fixedly connected with an exhaust pipe (5); The bottom of the combustion chamber (2) is provided with a fuel gas conveying pipe group for conveying fuel gas and coal lock gas; the rotary structure is characterized in that the rotary structure for mixing fuel gas and coal locking gas is arranged in the combustion chamber (2).
  2. 2. The gas delivery device for a boiler according to claim 1, wherein the gas delivery tube group comprises a main fuel gas delivery tube (6), a Y-shaped shunt (7), a branch fuel gas delivery tube (8), a main coal-locking gas delivery tube (9) and a branch coal-locking gas delivery tube (10), the main fuel gas delivery tube (6) is arranged on one side of the combustion chamber (2), the Y-shaped shunt (7) is fixedly connected to one end of the main fuel gas delivery tube (6) close to the combustion chamber (2), the fuel gas delivery tube (8) is fixedly connected to the other two holes of the Y-shaped shunt (7), the fuel gas delivery tube (8) stretches into the combustion chamber (2) from the diagonal of the combustion chamber (2) and is fixedly connected to the combustion chamber (2), the main coal-locking gas delivery tube (9) is arranged on one side of the combustion chamber (2), the Y-shaped shunt (7) is fixedly connected to one end of the main coal-locking gas delivery tube (9) close to the combustion chamber (2), the other two holes of the Y-shaped shunt (7) are fixedly connected to the branch coal-locking gas delivery tube (10), and the fuel gas delivery tube (8) stretches into the combustion chamber (2) from the diagonal of the branch coal tube (2) from the diagonal of the combustion chamber (2).
  3. 3. The gas conveying device for a boiler according to claim 2, wherein the rotating structure comprises an outer ring (11), a gas groove (12), an inner ring (13), a push plate (14) and an impeller (15), wherein the inner wall of the combustion chamber (2) is fixedly connected with the outer ring (11), the outer wall of the outer ring (11) is communicated with two groups of fuel gas conveying branched pipes (8) and coal gas locking conveying branched pipes (10), the gas groove (12) for gas circulation is formed in the outer ring (11), the inner wall of the outer ring (11) is rotatably connected with the inner ring (13), a plurality of groups of push plates (14) for pushing gas are fixedly connected to the outer wall of the inner ring (13) at equal intervals, and the impeller (15) is fixedly connected to the inner wall of the inner ring.
  4. 4. The gas conveying device for a boiler according to claim 2, wherein the two groups of the fuel gas conveying branch pipes (8) and the coal locking gas conveying branch pipes (10) are fixedly connected with a self-operated pressure regulator (16).
  5. 5. A gas delivery device for boilers as claimed in claim 3, characterized in that the impeller (15) is of conical design at its axis.
  6. 6. A gas delivery device for a boiler according to claim 3, characterized in that a plurality of groups of gas outlets are provided on the side of the inner ring (13) at equal intervals.
  7. 7. The gas delivery device for a boiler according to claim 1, wherein the bottom of the combustion chamber (2) is provided with a supply air port, and the bottom of the combustion chamber (2) is fixedly connected with a wind distribution plate (17) above the supply air port.
  8. 8. The gas conveying device for a boiler according to claim 7, wherein a plurality of groups of air holes are formed in the surface of the air distribution plate (17) at equal intervals, and a hood (18) is fixedly connected to the tops of the air holes.

Description

Gas conveying device for boiler Technical Field The utility model relates to the technical field of gas boilers, in particular to a gas conveying device for a boiler. Background In the fields of industrial production, heat supply, power generation and the like in daily life, a boiler plays a vital role, and a fuel gas conveying device is used as a key component of the boiler, so that the performance quality of the fuel gas conveying device directly influences the operation efficiency, the energy utilization rate and the pollutant emission condition of the boiler; When the conventional boiler gas conveying and combustion system is used for blending and burning various kinds of gas, on one hand, the gas conveying pipe group is unreasonable in layout, and accurate conveying and uniform distribution of different gas are difficult to realize, for example, when low-temperature methanol washing fuel gas and coal locking gas are introduced, the conventional pipeline system cannot be used for forming good combustible mixed gas according to different characteristics of the two kinds of gas (the low-temperature methanol washing fuel gas is about 2500-4000Nm3/h, the operating temperature is 24 ℃, the operating pressure is 0.3MPa, the heat value is about 1779Kcal/Nm3, the coal locking gas is about 1500-2000Nm3/h, the operating temperature is normal temperature, the operating pressure is 15-20KPa, the heat value is about 2492.7Kcal/Nm 3), the gas is stably and efficiently conveyed into the boiler combustion chamber, so that the gas is unevenly distributed in the combustion chamber, the combustion efficiency is influenced, on the other hand, the conventional device lacks an effective mixing structure in the combustion chamber, the fuel gas and the coal locking gas are difficult to be quickly and fully mixed, and cannot form good combustible mixed gas, so that the combustion speed and strength are limited, the energy of the boiler is utilized, the energy of the boiler is low in efficiency, the boiler is further, the accurate and the pressure of the boiler is difficult to be accurately and stably controlled, and the practical, the pressure of the boiler is not really influenced, and the pressure is required to be accurately and stably run, and the coal is operated according to the practical. Accordingly, there is a need to provide a new gas delivery device for boilers that solves the above-mentioned problems. Disclosure of utility model In order to solve the technical problems, the utility model provides a gas conveying device for a boiler. The utility model provides a fuel gas conveying device for a boiler, which comprises a support frame, a return pipe, a fuel gas conveying pipe group and a rotating structure, wherein the right combustion chamber is fixedly connected to the inside of the support frame, a cyclone separator is fixedly connected to one side of the combustion chamber in the support frame, the top of the combustion chamber is communicated with the cyclone separator through a pipeline, the return pipe is arranged between the combustion chamber and the cyclone separator, one end of the return pipe is fixedly connected with the side wall of the combustion chamber, the other end of the return pipe is fixedly connected with the bottom of the cyclone separator, the top of the cyclone separator is fixedly connected with an exhaust pipe, the fuel gas conveying pipe group for conveying fuel gas and coal locking gas is arranged at the bottom of the combustion chamber, and the rotating structure for mixing the fuel gas and the coal locking gas is arranged in the combustion chamber. Preferably, the fuel gas delivery pipe group comprises a fuel gas delivery main pipe, a Y-shaped splitter, a fuel gas delivery branch pipe, a coal lock gas delivery main pipe and a coal lock gas delivery branch pipe, wherein the fuel gas delivery main pipe is arranged on one side of the combustion chamber, the Y-shaped splitter is fixedly connected to one end of the fuel gas delivery main pipe, which is close to the combustion chamber, the fuel gas delivery branch pipe is fixedly connected to the other two holes of the Y-shaped splitter, the fuel gas delivery branch pipe extends into the combustion chamber from the diagonal of the combustion chamber and is fixedly connected to the combustion chamber, the coal lock gas delivery main pipe is arranged on one side of the combustion chamber, the Y-shaped splitter is fixedly connected to one end of the coal lock gas delivery main pipe, which is close to the combustion chamber, and the coal lock gas delivery branch pipe extends into the combustion chamber from the diagonal of the combustion chamber and is fixedly connected to the combustion chamber. Preferably, the rotating structure comprises an outer ring, air grooves, an inner ring, push plates and impellers, wherein the inner wall of a combustion chamber is fixedly connected with the outer ring, the outer wall of the outer ring is communicated wi