Internal control system and shell design of explosion proof electric heater

Electric heaters are common in our lives and electrical heaters can explode if they are used for a long time or improperly. For electric heaters, explosion-proof electric heaters of good quality shall be selected.

The electric heater, explosion proof heater, gas electric heater and liquid electric heater have larger market scale and higher technical content. In the electric heater, this kind of product is heated under high temperature, and the heating medium is different, the heating medium scale, electrochemical corrosion and other factors, the long-term use, insulation performance will decline heater heating tube internal high temperature and voltage of the system, may lead to part of the electric heating pipe and the high voltage system of tube explosion, therefore, gas liquid electric heater, electric heater, explosion-proof electric heater in explosion-proof tube has relatively high requirements.

The electric heater technical staff said, explosion-proof electric heater temperature system is the key parts, the current domestic market for spare parts prices are very sensitive, Chinese electric heater electric heater network related technical personnel have very high requirements of electric heating elements, such as frequent in the process of heating, the heating efficiency and products anti-limescale performance, installation position, appearance requirements and the safety performance of electric heater than ordinary electric heating products are much higher, which is on the electric heater factory manufacturers a big test.

The electric heater adopts the electric heating element has exposed electric wire, stainless steel tube, copper, purple copper electric heating tube and quartz tube several, researchers found that the relatively high cost of electric copper pipe has high reliability, superior performance, therefore, they are more optimistic about the market prospects of products for electric heater.

Explosion-proof electric heater internal control system based on the automatic regulation of the heater power output temperature sensor signal output port, the output port of the uniform medium temperature; when the heating element overheating, overheating protection device independent of the heating element immediately cut off the heating power, heating the material to avoid overheating caused by coking, metamorphism, carbonization, leading to serious the heating element damage, prolong the service life of the electric heater.

An explosion proof electric heater is a kind of electric energy that is consumed and converted into heat energy to heat the material to be heated. In the work, the cryogenic fluid medium enters the input port through the pipeline under pressure, and it is designed by the principle of fluid thermodynamics along the specific heat exchange channel inside the electric heating vessel.

Special design of explosion proof electric heater shell:

Considering the portability reasons, a lot of instruments and shells are made of plastic in weight control. Only a small part of them are made of metal shell. So when the plastic shell, in order to prevent the accumulation of dangerous electrostatic resistance on the surface of the plastic shell, there are specific requirements, forcing the resistance shall not exceed 1 * 109 Omega, and at the same time do the impact test and thermal stability test.

The normal operation of a spark, arc or dangerous temperature of electrical equipment, power is greater than 250W or current is more than 5 A class I electrical equipment shall be in the box and the equipment main electrical connection box is designed for cables or wires and electrical equipment connected components. At present, flameproof devices are widely used in flameproof electrical equipment. The inner wall of box junction box shall be coated with arc resistant paint, and the flameproof joint surface of junction box and main cavity shall be antirust treated, such as antirust oil, etc..

In addition, for explosion proof electric heaters, permanent Ex explosion proof signs and MA safety signs shall be provided at the obvious locations of their enclosures.