What is the operating principle of different types of electric heaters

Many people can understand that electric heaters are more equipment in life and use, such as electric kettles, electric funnels, electric heating and so on, all of which belong to the electric heater. The resistance wire of the electric heater has nickel and chromium alloys, and the temperature can reach over 800 degrees C. In the use of electric heater, can not be placed in the electric heater near flammable objects, must maintain a safe distance, the electric heater must be placed in the heat non flammable base, an electric heater is used must be left unattended, when you unplug the power, in the use process, if a sudden power outage, but also timely the electric heater power off, don't forget. Resistance wire damaged heater do not use, should be in time with the new resistance wire. Electric heater is the most popular electric heating equipment in today's society. It has not only high quality and long life. It is a liquid for the flow.

Structure optimization of electric heater:

The material of the explosion-proof electric heater is made of 15CrMoR. The electric heater needs to be scientifically calculated, and use the reasonable form and quantity of baffles to avoid the heating angle formed by the medium, and make the medium flow in the cylinder 360 degrees, so as to improve the flow rate of the surface medium of the electric heating element. The welding of electric heater is fully automatic tube plate argon arc welding controlled by computer, so that the welding between the shell and flange of the heating element is firm and reliable. Ammonia penetration test is used for the welding of electric heating pipe and casing. The electric heater should be equipped with a temperature sensor for overheating the alarm.

The product of high quality electric heating pipe should be selected and the test pressure must be qualified before adding the filling material. It is required that the heat dissipation area be heated after the welding of the heating flange and the connection flange, and then the water pressure test is carried out after the electric heating tube protective sleeve is welded. The test pressure should reach the container test pressure. The welding place of the electric heating pipe and the protective sleeve should be detected by 100%. The welding quality is guaranteed and the test pressure is qualified.

Let's look at the explosion-proof junction as a detachable structure, using low pressure nitrogen positive pressure ventilation. The inside protection of the explosion-proof junction box is provided. The outer shell of the junction bin is treated with lacquer, and it is safe and reliable. The explosion-proof grade is ExdIICT3 and the protection grade is IP54. It is designed strictly in accordance with the requirements specified by GB3836-2000 to meet the requirements of fire protection and explosion protection. The flameproof surface must be designed strictly according to the standard of electric heater to ensure matching tolerance.

The top power junction box of the electric heater must be put into the low pressure nitrogen positive pressure ventilation to ensure the safety requirements of explosion proof, and the positive pressure ventilation nitrogen pressure is ~0.4MPa.

To understand the electric heater is arranged on the top of the radiator, the length of the design according to the electric heater temperature less than 55 DEG C within the wiring chamber. The electric heater is equipped with heat dissipation area and heat insulation layer. The cooling area has heat dissipation plate. The outer layer of insulation layer is protected by stainless steel plate and round shell, and the structure is firm and beautiful. The processing of the junction housing should be made to ensure the roundness, and the internal machining should be made.

It has multiple control functions, that is, manual, automatic and DCS3. The adjustable potentiometer adopts a multi circle long stroke import product. The controller selects the imported brand. The other components in the box are selected in domestic high quality brands.

The specifications and types of electric heater are flanged heater, submerged heater, storage tank pump heater, pressure relief gas heater, storage tank heater, duct type gas heater, oil drum heater, heat carrier electric heating system, electric heating steam boiler and so on.

Flange heater: it has the characteristics of small size, high heating power and so on. It can heat all kinds of media on various occasions, such as explosion-proof occasion.

Immersion heater: it is suitable for heating the liquid of various containers, tanks and solution grooves.

Storage tank pump outlet heater: it is suitable for heating all kinds of viscous medium in the storage tank, hot start up quickly, and only needs partial preheating of the pump medium, so that it can save energy.

Pressure relief gas heater: it is suitable for the heating of high pressure natural gas, liquefied gas and other high pressure gas at the oil and gas wellhead.

Storage tank heater: all kinds of viscous medium can be heated and used for heating and insulation of various tanks and tank trucks. The products are safe and reliable, and the maintenance is convenient.

Air heater of air duct: mainly used for air heating in air duct. The fin type heating element can be used to increase the heat exchange area and improve the heat exchange efficiency. It is mainly composed of three series of high temperature, medium and mild low temperature.

It is also simple to explain that the principle of electric heating is that the electric heater is used as the carrier and through heat conduction, the purpose of heating is to be achieved. Now there is a heating way instead of electric heating. That is induction heating. Induction heating makes use of strong magnetic field to make the molecules and original small parts produce violent motion, so as to generate heat, and directly heat the heated body. The heating time is fast, and the electricity saving rate is high.