Combustor for boiler

Abstract

The invention provides a combustor for a boiler, which comprises an oil gun body, a stable combustion sleeve, a traction tube, a mechanical arm, an oil gun air cylinder, an air source disc, a travel switch, a fixed plate, a connecting rod, a valve terminal, a valve terminal control board, an air filter reducing valve and a solenoid valve box, wherein the an outer sleeve is arranged at the rear part of the gun body; the stable combustion sleeve is arranged at the end part of the oil gun body; the traction tube is sleeved in the outer sleeve on the rear part of the gun body; the mechanical arm is arranged on the traction tube; a piston of the air cylinder is connected with the mechanical arm through a pull rod; the air source disc connected with an air source is arranged on the oil gun air cylinder; the travel switch is connected with the oil gun air cylinder; the fixed plate is arranged on the outer sleeve; a fixed rod is arranged at a side face of the fixed plate; the connecting rod is arranged on the stable combustion sleeve and is connected with the fixed rod; communication ports and wiring terminals are arranged on the valve terminal and the valve terminal control board; one end of the air filter reducing valve is connected with the valve terminal; the other end of the air filter reducing valve is connected with an air source pipe through a manual valve; and the valve terminal, the valve terminal control board, the air filter reducing valve and the manual valve are all arranged in the solenoid valve box. In the invention, larger deformation can be borne, and the blocking phenomenon of the oil gun due to deformation is avoided; and moreover, a control element avoids influences of high temperature, dust, oil stains and the like, therefore, the service life of equipment is greatly prolonged.

Description

technical field [0001] The invention relates to boiler equipment, in particular to a boiler burner. Background technique [0002] Among the power plant boilers that use oil burners as starting, combustion-supporting, and stable combustion, the four-cornered circular furnace is a common type of furnace. During the use of the oil gun, the deformation of the oil gun body due to the deformation of the hot and cold metal of the boiler is very easy. The pulling force generated when the burner swings often encounters a large deformation or even breakage of the metal hose of the outer casing of the oil gun. Both the solenoid valve and the travel switch are installed on the oil gun body, which is close to the furnace wall. The temperature is high, the dust is large, the oil pollution is large, and the environment is harsh, which brings great inconvenience to the debugging and maintenance of the equipment after the initial installation. Greatly increased the workload and difficulty o...

AI Technical Summary

Problems solved by technology

[0004] 1. The existing oil gun body is a rigid structure. When the oil gun is advancing and retreating, the boiler body has a large thermal deformation that affects the oil gun body. The friction, deformation, and shear force will all act on the oil gun The body produces jamming phenomenon;

[0005] 2. The solenoid valve is installed on the body of the oil gun, close to the furnace wall, with high temperature, large dust, and harsh environment. It is difficult to install, debug, and maintain the equipment, the workload is heavy, and the reliability is low;

[0006] 3. Both the solenoid valve and travel switch are installed on the oil gun body, which is close to the furnace wall. The temperature is high, the dust is large, and the environment is harsh. Corrosion and rupture cause short circuit and open circuit of signal lines, resulting in unstable or even complete loss of equipment feedback signals, increasing the difficulty and intensity of equipment debugging and maintenance, and affecting safe production

[0007] 4. The position feedback adopts the traditional mechanical switch, the mechanical structure is complicated, the volume is large and messy, the sliding rod and the slider are easy to dry out with other equipment, and the collision will cause damage to the equipment or abnormal position signal feedback

In the exposed environment, the limit switch is affected by the high temperature and strong corrosion factors on site, and the mechanical and electrical performance of the limit switch is greatly reduced.

In the rainy temperature and humidity environment in the south, the terminals and wires of the travel switch are easily oxidized and corroded, and the signal transmission is often intermittent, and the signal transmission part is stable, which affects the normal use of the equipment and affects the safety of production.

Moreover, the mechanical switch has a large volume, many auxiliary parts, a scattered structure, and low action accuracy and reliability.

[0008] 5. The combustion-stabilizing hood and the nozzle of the burner are welded on the circumference. When the boiler is deformed due to cold and heat or the burner swings up and down, the oil gun’s combustion-stabilizing hood and the metal hose of the outer casing will swing together, causing a large deformation on the outer casing, which is extremely Easily damaged oil gun casing metal hose

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