Explosion prevention system for fuel gas aluminum brazing thermal-degreasing furnace

Abstract

The invention discloses an explosion prevention system for a fuel gas aluminum brazing thermal-degreasing furnace. The explosion prevention system has the advantages of realizing electrical interlocking between a burner and a fan, ensuring the starting of the burner follows that of the fan, preventing the burner from being not ignited successfully in ignition or from being extinguished due to faults in normal use and preventing a fuel gas from entering the furnace to cause explosion, simultaneously detecting the pressure of the fuel gas entering the burner and preventing the leakage of the fuel gas.

Description

technical field [0001] The invention relates to a gas type aluminum brazing thermal degreasing furnace, in particular to an explosion-proof system used in the gas type aluminum brazing thermal degreasing furnace. Background technique [0002] The aluminum brazing furnace is a kind of equipment for effectively connecting the various parts of the aluminum heat exchanger. It is welded by utilizing the characteristic that the alloy melting point of aluminum solder is lower than the melting point of aluminum metal material. The brazing filler metal is usually placed near or inside the welding surface of the part to be connected, and NOCOLOK aluminum brazing flux is coated between the parts and the welding surface and on the surface. After installation and drying, the parts are heated under the protection of a certain inert gas until the brazing alloy melts The temperature at which the metal of the part does not melt. The inert gas used is generally nitrogen. At the same time, ...

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Problems solved by technology

These substances must be cleaned and degreased in a thermal degreasing furnace before the aluminum brazing flux can be sprayed and coated, otherwise the aluminum brazing flux cannot effectively adhere to the surface of the internal solder, and aluminum brazing cannot be performed

During the use of the existing gas-fired aluminum brazing thermal degreasing furnace, the gas pipe entering the burner is prone to gas leakage, which is unsafe to use

When using, it is necessary to ensure that the blower is started first and then the burner is started. When the burner is not ignited or goes out due to a fault during normal use, the gas will enter the furnace and cause an explosion.

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