Fluid explosion-proof electric heater is a power consumption energy to heat energy to heat the material to be heated. The low-temperature fluid medium in the work enters its input opening through the pipe, along the electrical heating container inside the electric heating container, using the path of the fluid thermodynamic principle design, and takes the high temperature heat generated in the electric heat element. The temperature of the heated medium is increased, and the electric heater outlet obtains a high temperature medium required for the process. The internal control system of the electric heater automatically adjusts the output power of the electric heater according to the temperature sensor signal of the output port, so that the medium temperature of the output port is uniform; when the heat generating element is over temperature, the independent superheating protection device of the heat generating element immediately cuts off the heating power supply to avoid The heating material is over temperature caused coking, deterioration, carbonization, and severely causes the heat generating element to burn down, and effectively extend the life of electric heater. The chemical material of the chemical industry is heated and heated, and some powder drying, chemical processes and spray drying were severed. Water, superheated steam, molten salt, nitrogen (empty) gas, water gas, etc., the temperature is heated. Due to the advanced explosion-proof structure, the equipment can be widely used in chemical, electric heater oil, natural gas, sea platform, ship, mining area and other explosion-proof places. A wide range of applications, adaptability: The heater can be applied to explosion-proof or ordinary occasions, electric heater explosion-proof grades can reach DIIB grade and C grade, with pressure of 20 MPa. Long life, high reliability: The heater is made of special electric heating material, the design surface power load is low, and multiple protection is used to increase the safety and life of electric heater. ⒎ can automatically control: According to the requirements of the electric heater circuit design, the exit temperature, electric heater flow, pressure and other parameters are automatically controlled, and can be connected to the machine computer.
converts electrical energy into thermal energy to heat the object. It is a form of electrical energy utilization. Compared to general fuel heating, electric heating can achieve higher temperature (such as arc heating, temperature up to 3000 ° C), easy to achieve automatic control and long distance control of temperature, (such as car electric heating cup) can be made as needed The heating object remains a certain temperature distribution. Electric heating energy is directly generated inside the heated object, thereby high heat efficiency, fast heating speed, and can achieve overall uniform heating or local heating small space heater (including surface heating) according to the process required for heating, and can easily achieve vacuum heating and control atmosphere heating. During the electric heating process, the resulting exhaust gas, the residue, and the dust can be kept clean, not contaminated by the heated object. Therefore, electric heating is widely used in the fields of production, research and testing. In particular, electric heating is employed in terms of single crystal and transistors, mechanical parts and surface quenching, iron alloy smelting and manufacturing of artificial graphite.
According to the electrical energy conversion method, electric heating is usually divided into resistance heating, induction heating, arc heating, electron beam heating, infrared heating, and medium heating.The electrical energy is converted into thermal energy to heat the object using the coke effect of current. It is usually divided into direct resistance heating and indirect resistance heating. The former’s power supply voltage is directly added to the heated object, and when there is current flow, heated the object itself (such as electric heating iron) is heated. A direct resistance heated object must be a conductor, but there is a high resistivity. Since heat is generated from the heated object itself, it belongs to internal heating and high thermal efficiency. An indirect resistance heating requires a special alloy material or a non-metallic material to generate a heat generating element, generating thermal energy by the heat generating element, transmitted to the heated object by radiation, convection and conductivity, and the like. Since the heated object and the heat generating element are divided into two parts, the type of heated object is generally not limited, and the operation is simple. Indirect resistance heating heat generating material used, generally required a large resistivity, small resistance temperature coefficient, small deformation at high temperatures and is not easily embarranging. Commonly used metal materials such as iron aluminum alloy, nickel-chromium alloys and other non-metallic materials such as silicon carbide, silicon mono-boss. The working temperature of the metal heat generating element can reach 1000 to 1500 ° C according to the material species; the operating temperature of the non-metal heat generating element can reach 1500 to 1700 ° C. The latter is easy to install, but the heating furnace is replaced, but it needs pressure regulating device when it works, and the life is shorter than the alloy heating element. It is generally used for high temperature furnaces, and the temperature exceeds the metal material heating element allows the working temperature to allow operating temperatures and certain special occasions..