Explosion-proof preheating plug and explosion-proof preheating control system

Abstract

The invention discloses an explosion-proof preheating plug. A heat insulation shell is fixed on the side wall of a combustion chamber of an engine, and a fixed shell extending out of the combustion chamber and a heat conduction shell extending into the combustion chamber are fixedly arranged on the heat insulation shell; an electric heating wire is arranged in the heat conduction shell, the electric heating wire provides power by two preheating cables to form a loop, the power supply loop is composed of two independent wires, there is no need to form the loop with the help of a shell, and electric leakage is avoided; and at least one preheating cable is provided with a fuse capable of breaking at high temperature, and the fixed shell and the heat insulation shell are filled with insulationpouring sealant. When a system is overloaded, the fuse is disconnected, the circuit is disconnected, the preheating work is stopped, the temperature is prevented from exceeding the safety value, andthe system safety is guaranteed. The invention further provides an explosion-proof preheating control system, wherein the electric heating wire and the fuse are arranged in series on the preheating cables, the plurality of preheating cables are connected in parallel to a total circuit, and when the circuit is overloaded, the fuse is broken, so that the above technical effect can be realized.

Description

technical field [0001] The invention relates to the technical field of explosion-proof internal combustion engines, and further relates to an explosion-proof glow plug. In addition, the invention also relates to an explosion-proof preheating control system. Background technique [0002] Glow Plug, commonly known as glow plug, is an auxiliary heating material for diesel engine startup. When the diesel engine is started, it is difficult to start the engine due to the low temperature outside, relying on the process of air intake, compression, explosion, and exhaust cycle. At this time, auxiliary heating is required. [0003] The glow plug is installed in the preheating chamber on the upper part of the engine cylinder, located below the fuel injector. When the diesel is sprayed and atomized, it will be heated through the glow plug. When the heated oil gas is compressed, it is easier to explode and start the cycle. , the normal cycle works. [0004] The engine working in an in...

AI Technical Summary

Problems solved by technology

[0005] At present, the explosion-proof glow plugs on internal combustion vehicles at home and abroad all use timers to control the working time of the glow plugs. When the system is overloaded, a large amount of heat may be generated instantaneously and the temperature exceeds the safety limit value, causing

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