CN213930918U - Double-channel burner for kiln - Google Patents
Double-channel burner for kiln Download PDFInfo
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- CN213930918U CN213930918U CN202022593632.7U CN202022593632U CN213930918U CN 213930918 U CN213930918 U CN 213930918U CN 202022593632 U CN202022593632 U CN 202022593632U CN 213930918 U CN213930918 U CN 213930918U
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Abstract
The utility model provides a kiln binary channels combustor, the combustion head includes air-fuel contraction mixing chamber and the gas mixture expansion chamber that is located air-fuel contraction mixing chamber the place ahead and communicates in air-fuel contraction mixing chamber, gas mixture expansion chamber sets up an annular steady flame gas passageway outward, the rear end of steady flame gas passageway communicates with the gas nozzle through the steady flame trachea, the front end side of steady flame gas passageway is opened has a plurality of steady flame gas orifice, steady flame gas orifice communicates with the main flame spout of combustion head front end, there is annular clearance and then forms combustion-supporting air passageway between the combustion head outside and tube-shape shell, the front end and the steady flame gas orifice of combustion-supporting air passageway communicate; the utility model discloses solved the problem that the high-speed gas stream of prior art easily produced the tempering effectively, the high-speed gas of combustion head burning all the time to make the gas fully burn, improved the combustion efficiency of gas, the energy saving has reduced carbon monoxide and nitrogen oxide and has discharged. Through measurement, the energy saving of the burner reaches 10%, and the emission of oxynitride is more than 20%.
Description
Technical Field
The utility model belongs to the industrial combustion equipment field relates to a kiln binary channels combustor.
Background
The burners are core components for providing heat energy for the kiln, gas is sprayed into the kiln through burner nozzles to burn so that the temperature in the kiln reaches more than thousand degrees, tens or hundreds of burners are arranged on one kiln according to the length of the kiln, and the burning condition of the burners is the key point for saving energy of the kiln. The main structure of kiln burner includes a gas pipeline and air supply pipeline, the air supply mode is natural ventilation or power air distribution, the air supply pipeline nozzle of existent ceramic kiln burner is parallel-arranged with gas pipeline nozzle or communicated in the combustion head, the gas and air are sprayed out from the nozzles of their pipeline front ends, and said structure is mainly deficient in that the mixing is insufficient and non-uniform, the combustion is insufficient, when the gas flow rate is quick, the tempering phenomenon can be easily produced, at the same time, its heat efficiency is low, the discharge content of carbon monoxide and nitrogen oxide is high, and it can pollute environment.
SUMMERY OF THE UTILITY MODEL
The utility model provides a double-channel combustor of a kiln, which has good combustion effect, good energy-saving effect and can effectively prevent backfire.
The utility model discloses a realize through following technical scheme:
the double-channel combustor of the kiln comprises a cylindrical shell, wherein an air jet pipe, an ion flame detection needle and an ignition needle are arranged in the cylindrical shell, a combustion head is arranged at the front end of the cylindrical shell, a gas nozzle is connected to the front end of the air jet pipe, the combustion head is arranged in front of the gas nozzle and comprises an air-fuel contraction mixing cavity and a gas mixture expansion cavity which is located in front of the air-fuel contraction mixing cavity and communicated with the air-fuel contraction mixing cavity, an annular flame stabilizing gas channel is arranged outside the gas mixture expansion cavity, the rear end of the flame stabilizing gas channel is communicated with the gas nozzle through a flame stabilizing gas pipe, a plurality of flame stabilizing gas spray holes are formed in the front end side direction of the flame stabilizing gas channel, the flame stabilizing gas spray holes are communicated with a main flame spray nozzle at the front end of the combustion head, an annular gap is formed between the outer side of the combustion head and the cylindrical shell, and then a combustion-supporting air channel is formed, and the front end of the combustion-supporting air spray holes are communicated with the flame stabilizing gas spray holes.
The further technical scheme is as follows:
the circumference of the outer wall of the front end of the combustion head is provided with a plurality of combustion-supporting wind teeth which are uniformly distributed and have helical tooth structures, so that a plurality of oblique ventilation grooves are formed, and rotating wind is provided for the flame-stabilizing gas jet holes.
After the structure of the oil gas burner is adopted, the utility model discloses gas and air mix in air-fuel contraction mixing chamber and expand at the gas mixture expansion intracavity, have improved the velocity of flow of mist, and the mist is by the burner blowout, and the steady flame gas nozzle of steady flame gas passageway rear end side direction provides the flame of stable burning to burner front end both mist, has guaranteed that the mist can not produce the tempering phenomenon under high-speed spun state. Therefore, the problem that the high-speed gas flow in the prior art is easy to cause backfire is effectively solved, and the combustion head always burns high-speed gas, so that the gas is fully combusted, the combustion efficiency of the gas is improved, energy is saved, and the emission of carbon monoxide and nitrogen oxides is reduced. Through measurement, the energy saving of the burner reaches 10%, and the emission of oxynitride is more than 20%.
Drawings
Fig. 1 is a longitudinal sectional view of a dual-channel burner of a kiln.
Fig. 2 is a longitudinal sectional view of a burner head according to the present invention.
In the figure: 1. the device comprises a gas connector, 2 an air-fuel ratio detection valve, 3 a gas pipe, 4 a gas nozzle, 5 an air-fuel contraction mixing cavity, 6 a mixed gas expansion cavity, 7 a flame stabilizing gas pipe, 8 a flame stabilizing gas channel, 9 a flame stabilizing gas nozzle, 10 a combustion-supporting air channel, 11 an ignition needle, 12 an example flame detection needle, 13 a main flame nozzle, 14 a kiln wall fire-resistant wall, 15 a cylindrical shell and 16 combustion-supporting air teeth.
Detailed Description
The following provides a detailed description of the present invention with reference to the accompanying drawings.
The utility model provides a kiln double-channel combustor, which comprises a tubular shell 15, an air injection pipe 3, an ion flame detection needle 12 and an ignition needle 11 are arranged in the tubular shell 15, a combustion head is arranged at the front end of the tubular shell 15, a gas nozzle 4 is connected at the front end of the air injection pipe 3, the combustion head is arranged in front of the gas nozzle 4, the combustion head comprises an air-fuel contraction mixing cavity 5 and a mixed gas expansion cavity 6 which is arranged in front of the air-fuel contraction mixing cavity 5 and communicated with the air-fuel contraction mixing cavity 5, an annular flame stabilizing gas channel 8 is arranged outside the mixed gas expansion cavity 6, the rear end of the flame stabilizing gas channel 8 is communicated with the gas nozzle 4 through a flame stabilizing gas pipe 7, a plurality of flame stabilizing gas spray holes 9 are arranged at the front end side of the flame stabilizing gas channel 8, the flame stabilizing gas spray holes 9 are communicated with a main flame spray nozzle 13 at the front end of the combustion head, an annular gap is arranged between the outer side of the combustion head and the tubular shell 15 so as to form a combustion-supporting air channel 10, the front end of the combustion-supporting air channel 10 is communicated with the flame-stabilizing air jet hole 9.
The circumference of the outer wall of the front end of the combustion head is provided with a plurality of combustion-supporting wind teeth 16 with uniformly distributed helical tooth structures so as to form a plurality of oblique ventilation grooves and provide rotating wind for the flame-stabilizing gas jet holes 9. The combustion supporting wind teeth 11 of the present embodiment form an angle of 30 degrees with the axial direction.
Claims (2)
1. The kiln double-channel combustor comprises a cylindrical shell (15), wherein an air injection pipe (3), an ion flame detection needle (12) and an ignition needle (11) are arranged in the cylindrical shell (15), a combustion head is arranged at the front end of the cylindrical shell (15), a gas nozzle (4) is connected at the front end of the air injection pipe (3), the combustion head is arranged in front of the gas nozzle (4), the combustion head comprises an air-fuel contraction mixing cavity (5) and a mixed gas expansion cavity (6) which is positioned in front of the air-fuel contraction mixing cavity (5) and communicated with the air-fuel contraction mixing cavity (5), and the kiln double-channel combustor is characterized in that an annular flame stabilizing gas channel (8) is arranged outside the mixed gas expansion cavity (6), the rear end of the flame stabilizing gas channel (8) is communicated with the gas nozzle (4) through a flame stabilizing gas pipe (7), a plurality of flame stabilizing gas spray holes (9) are formed in the front end side of the flame stabilizing gas channel (8), and the flame stabilizing gas spray holes (9) are communicated with a main flame spray nozzle (13) at the front end of the combustion head, an annular gap is arranged between the outer side of the combustion head and the cylindrical shell (15) to form a combustion-supporting air channel (10), and the front end of the combustion-supporting air channel (10) is communicated with the flame-stabilizing gas jet hole (9).
2. The dual-channel burner of the kiln as recited in claim 1, wherein a plurality of combustion-supporting wind teeth (16) with uniformly distributed helical tooth structures are arranged on the circumference of the outer wall of the front end of the burner head to form a plurality of inclined ventilation slots for providing rotating wind to the flame-stabilizing gas jet holes (9).
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022070001 | 2020-09-21 | ||
| CN2020220700017 | 2020-09-21 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN213930918U true CN213930918U (en) | 2021-08-10 |
Family
ID=77167506
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202022593632.7U Active CN213930918U (en) | 2020-09-21 | 2020-11-11 | Double-channel burner for kiln |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN213930918U (en) |
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2020
- 2020-11-11 CN CN202022593632.7U patent/CN213930918U/en active Active
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