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Gas burner

A burner, gas technology, applied in the direction of gas fuel burners, burners, combustion methods, etc., can solve problems such as poor stability, short flame, deflagration, etc.

Inactive Publication Date: 2015-04-01
江西中船航海仪器有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Since the gas and air are pre-mixed, the combustion speed is fast, the flame is short, but the stability is poor
On the other hand, the premixed gas-air mixture is an explosive gas with strong flame propagation ability, so it is prone to flashback, deflagration, and even explosion hazards

Method used

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Embodiment

[0019] After the low-fire gas is sprayed through the low-fire gas nozzle hole, it is mixed with the high-speed and high-pressure primary combustion-supporting air for dynamic diffusion. After being ignited by the igniter, it realizes rapid and stable combustion and forms a low-fire flame. According to the requirement of load adjustment, the high-fire gas is sprayed into the secondary combustion-supporting air channel from the high-fire gas nozzle hole at an angle of 90° and at a speed of (30-70) m / s, so that the gas and air are premixed into a gas-air mixture. It is sprayed out from the annular nozzle and ignited by a low-fire flame to form a high-fire flame. The low-fire blunt body flame stabilizer fully reflows the high-temperature flue gas, ensures the reliability and stability of low-fire gas ignition, and avoids the occurrence of a fire-off state.

[0020] The burner is equipped with two sets of gas nozzles, one is a low-fire gas nozzle, and the other is a high-fi...

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Abstract

A gas burner comprises an air box, an igniter, a flame observing barrel, a flame monitor and a wiring box. A low-fire gas inlet is arranged on the air box and connected with a low-fire gas nozzle, a primary air cyclone is arranged on the outer side of the low-fire gas nozzle, a high-fire gas nozzle is arranged on the air box and connected with a high-fire gas nozzle, a secondary air cyclone is arranged on the outer side of the high-fire gas nozzle, the low-fire gas nozzle and the high-fire gas nozzle are of a concentric structure, the low-fire gas nozzle is connected with primary burning-assisting air, and the high-fire gas nozzle is connected with secondary burning-assisting air. Due to arrangement of the low-fire gas nozzle, adjusting ratio and adjusting accuracy of the burner are improved greatly, and oven gas needs of a gas oven can be met; the gas burner has the advantages of yellow bright burning flame and good radiation heat transfer effect and is free of backfire and flame lifting and suitable for natural gas, liquefied petroleum gas, coke oven gas, biomass gas, petroleum gas, chemical engineering tail gas and the like not lower than 3000kcal / m3 (standard) in burning heat value.

Description

technical field [0001] The invention relates to a gas burner. Background technique [0002] Most types of burners for high and medium calorific value gases use diffusion combustion. This type of burner is mainly composed of gas nozzles, air distributors and flame stabilizers, and generally does not have low-fire gas nozzles. Gas and air are mixed in the form of dynamic diffusion. In most cases, the flame is slender and cannot adapt to vertical gas furnaces or short hearth gas furnaces. During low-load combustion, due to the reduction of gas and air flow velocity, the mixing effect becomes worse, the combustion efficiency decreases, and the combustion temperature is relatively low. Diffusion-type gas burners have a small load adjustment range and poor adjustment accuracy. At the same time, because they do not have low-fire gas nozzles, they cannot meet the needs of starting the oven for gas furnaces. [0003] The premix burner is mainly composed of a gas nozzle, an air sle...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F23D14/02F23D14/58F23D14/46
CPCF23D14/02F23D14/26F23D14/46F23D14/58F23D2203/00
Inventor 余秀宇陈彬彬刘太孝
Owner 江西中船航海仪器有限公司
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