CN201212680Y - Radiation-resistant burners for medium and small power heating and heat treatment - Google Patents

Abstract

A radiation-resistant burner with medium and small power for medium-high temperature heating and heat treatment. The gas chamber has a gas inlet; the right end of the gas chamber is connected to a burner shell, and the burner shell has an air inlet; the right end connected to the burner shell is a ceramic combustion chamber; the gas passes through The gas pipe is connected to the central gas nozzle, and there is a ceramic swirl plate at the end of the central gas nozzle; the ignition electrode penetrates from the gas chamber, passes through the gas chamber, penetrates into the burner shell, and then penetrates into the ceramic combustion chamber. The burner adopts an air-gas multi-stage mixed combustion structure, which greatly reduces the amount of nitrogen oxides in the combustion products and achieves the effect of "energy saving and emission reduction". The anti-radiation burner adopts a high-temperature-resistant ceramic body structure, which can withstand heat radiation above 1000°C to 1200°C without cooling, and does not need air cooling when the burner stops working in a high-temperature environment. And it has the effect of saving energy and reducing NOx emissions. At the same time, the burner structure is reasonable, easy to maintain and easy to replace.

Description

Radiation-resistant burners for medium and small power heating and heat treatment

technical field

The utility model belongs to gas burners, in particular to an anti-radiation burner with medium and small power, medium and high temperature heating and heat treatment.

Background technique

Traditional burners and air swirl plates are made of heat-resistant alloys. For high-temperature heating furnaces, especially high-temperature heating furnaces that work intermittently, the process often requires the furnace to open the furnace door to load and discharge materials at high temperature. At this time, the heating system is required to stop. Work. The burner must withstand heat radiation above 1000°C without cooling, which will cause deformation or even damage to the structure of the swirl plate in the burner. In practice, in order to prevent the metal swirl blade of the burner from being damaged due to high-temperature radiation, it is often required to pass air into the burner to cool the burner when the burner is stopped, which will cause the heated workpiece to be oxidized and cause a large heat loss at the same time. Waste of energy.

Contents of the invention

The technical problem to be solved by the utility model is: to provide an anti-radiation burner for heating and heat treatment with medium and small power, and the burner will not be deformed and damaged during continuous combustion.

The technical scheme of the utility model is:

An anti-radiation burner with medium and small power for medium-high temperature heating and heat treatment, characterized in that: there is a gas chamber, and the gas chamber has a gas inlet; the right end of the gas chamber is connected to a burner shell, and the burner shell has an air inlet; connected to the burner shell The right end of the right end is the ceramic combustion chamber; the gas chamber, burner shell, ceramic or metal combustion chamber are connected in sequence; the gas chamber is connected to the central gas nozzle through the gas pipe, and there is a ceramic swirl piece at the end of the central gas nozzle; the ignition electrode passes through the gas chamber In, through the gas chamber into the burner shell, and then into the ceramic combustion chamber.

The gas chamber, burner shell, and ceramic combustion chamber are independent split structures, which are assembled together with connectors, and the burner shell is lined with thermal insulation materials.

There is a flame monitor on the left wall of the gas chamber, and pressure measuring joints are installed on the gas inlet and air inlet.

The utility model features and effects are:

The anti-radiation burner for medium and small power and medium-high temperature heating and heat treatment of the utility model adopts a high-temperature-resistant ceramic body structure, which can withstand heat radiation above 1000°C to 1200°C without cooling, and does not burn when the burner stops working in a high-temperature environment. Air cooling is required. And it has the effect of saving energy and reducing Nox emissions. At the same time, the structure of the burner is reasonable, which is convenient for maintenance and replacement.

1. The air-gas mixing nozzle of the burner adopts a high-temperature-resistant ceramic body structure, and the air (cold air or hot air) is ejected from the ceramic body and mixed with the gas ejected from the central nozzle for combustion. The ceramic body can adopt the porous direct current type or the porous swirl type. According to the change of the design structure of the ceramic body, the injected combustion air can be mixed with the gas for primary combustion, and secondary combustion can also be carried out to achieve the purpose of reducing NOx.

2. For hot air combustion, the burner adopts an internal heat preservation design, thereby reducing the temperature of the burner shell, improving the operating environment and reducing heat loss.

3. The burner is equipped with an electronic ignition electrode and a flame detection device, which is convenient for measuring and controlling the combustion status; the ignition electrode can be pulled out and screwed in at any time, which is convenient for maintenance.

4. Depending on the operating temperature, the high-temperature part of the burner (combustion chamber) can be made of heat-resistant steel or high-temperature-resistant ceramic materials. The burner brick is eliminated, the weight is reduced, and the installation is convenient.

5. The burner adopts a segmented module structure, which is convenient for installation and maintenance: the burner is divided into three sections: gas chamber, burner shell, ceramic or metal combustion chamber, and the three sections can be disassembled and replaced at will.

6. Depending on the shape and size of the outlet of the burner brick, different ejection speeds can be obtained to meet the needs of various processes.

Description of drawings

Figure 1 is a schematic diagram of the structure of a radiation-resistant burner for medium and small power, medium and high temperature heating and heat treatment

Detailed ways

As shown in Figure 1, a radiation-resistant burner with medium and small power, medium and high temperature heating and heat treatment is characterized in that: there is a gas chamber 1, and the gas chamber has a gas inlet 2; the right end of the gas chamber is connected to a burner shell 3, and the burner The shell has an air inlet 4; the right end connected to the burner shell is a ceramic combustion chamber 5; the gas chamber, burner shell, ceramic or metal combustion chamber are sequentially connected; the gas chamber is connected to the central gas nozzle 6 through a gas pipe, and the end of the central gas nozzle A ceramic swirl piece 7 is arranged; an ignition electrode 8 penetrates from the gas chamber, passes through the gas chamber, penetrates into the burner shell, and then penetrates into the ceramic combustion chamber.

The gas chamber, the burner shell, and the ceramic combustion chamber are each independently dismantled split structures, assembled together with connectors, and the burner shell is lined with an insulating material 11 .

A flame monitor 9 is arranged on the left wall of the gas chamber, and a pressure measuring joint 10 is installed at the gas inlet and the air inlet.

Claims (3)

1. A radiation-resistant burner with medium and small power for medium-high temperature heating and heat treatment, characterized in that: there is a gas chamber, and the gas chamber has a gas inlet; the right end of the gas chamber is connected to a burner shell, and the burner shell has an air inlet; The right end of the nozzle shell is a ceramic combustion chamber; the gas chamber, burner shell, ceramic or metal combustion chamber are connected in sequence; the gas chamber is connected to the central gas nozzle through the gas pipe, and there is a ceramic swirl plate at the end of the central gas nozzle; the ignition electrode is connected from the gas Penetrate outdoors, pass through the gas chamber, penetrate into the burner shell, and then penetrate into the ceramic combustion chamber. 2. The anti-radiation burner for medium and small power, medium and high temperature heating and heat treatment according to claim 1, characterized in that: the gas chamber, the burner shell, and the ceramic combustion chamber are each independent split structures, assembled together with connectors , The burner shell is lined with thermal insulation material. 3. The anti-radiation burner with medium and small power, medium and high temperature heating and heat treatment according to claim 1, characterized in that: there is a flame monitor on the left wall of the gas chamber, and pressure measuring joints are installed at the gas inlet and air inlet.

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