Welding is a very important step in the production of the air duct electric heater system. Most of the system is transported by pipelines, so the connection between pipes and pipes, pipes and other components is welded except for bolted connections. First, the flange is welded to the pipe, and then the two pipes are connected by the bolt connection. Because of the hot oil in the pipe, the temperature and pressure are high, and the quality of the whole system is directly affected by the quality of the welding. It can be seen from this that the welding process is an indispensable step in the design of the heat conduction oil system.
Welding is a process of local rapid heating and cooling of the air channel electric heater. It is restricted by the body around the workpiece and can not expand and shrink freely. After welding, the workpiece will generate welding stress or even deformation in the weldment.
Duct type electric heater has a body and a control system composed of two parts, the heating element adopts stainless steel to do to protect the casing, high temperature resistance wire, magnesium oxide crystallization, by compression molding. The digital circuit of the advanced control part, integrated circuit, thyristor trigger pressure Gao Fan to compose adjustablethermometer and constant temperature system, ensure the normal the operation of the electric heater.
The air channel type explosion-proof electric heater is a kind of equipment that is used more frequently in work and life, such as electric stove, electric iron, electric iron, electric heater, electric oven, etc., all belong to the electric heating equipment.
The resistance wire of the air duct type explosion-proof electric heater is made of nickel and chromium alloy, and the temperature is even above 800 degrees centigrade. Because the power of the air duct type explosion-proof electric heater is very large, the fire can happen at any time if the user ignores the safety.
The causes of fire in air duct type explosion-proof electric heater are as follows:
One is to put an electrified electric heater on a combustibles or near a flammable, causing a fire at a long time of high temperature baking.
The two is that the electric heater does not install the plug, directly inserts the wire head into the socket, so it is easy to cause a short circuit and a fire.
Three is the use of air channel explosion-proof electric heater when leaving, did not pull the plug of the electric heater, the time is too long, causing the electric heater to overheat, igniting the nearby combustibles and causing a fire.
Four is the wind tunnel type explosion-proof electric heater resistance wire after multiple repairs to continue to use, can cause line overload and fire.