Product principle
The pipe electric heater is a device that converts electrical energy into thermal energy to heat the materials that need to be heated. During operation, the low-temperature fluid medium enters the input port through the pipeline under pressure and follows the specific heat exchange flow channel inside the electric heating container. The path designed based on the principles of fluid thermodynamics takes away the high-temperature thermal energy generated by the electric heating elements during operation, raising the temperature of the heated medium. The outlet of the electric heater obtains the high-temperature medium as required by the process. The internal control system of the electric heater automatically adjusts the output power of the electric heater based on the signal from the temperature sensor at the output port, ensuring uniform temperature of the medium at the output port. When the heating element overheats, the independent overheat protection device of the heating element immediately cuts off the heating power supply to prevent the heating material from overheating and causing coking, deterioration, carbonization, and in severe cases, burning out the heating element, effectively extending the service life of the electric heater.
Product features
It can heat the medium to a very high temperature, up to 850℃, while the shell temperature is only around 50℃.
2. High efficiency: Up to 0.9 or above;
3. The heating and cooling rates are fast, reaching up to 10℃/S, and the regulation process is quick and stable. There will be no phenomenon of the controlled medium temperature being ahead of or lagging behind, which would cause the control temperature to drift. It is suitable for automatic control.
4. Excellent mechanical performance: As its heating element is made of alloy material, it has better mechanical performance and strength than any other heating element under the impact of high-pressure air flow. This is particularly advantageous for systems and accessory tests that require continuous and long-term air heating.
5. When the usage process is not violated, its service life can last for several decades, making it highly durable.
6. Clean air and small size;
7. According to the needs of users, various types of pipe electric heaters can be designed.
Product Description
Pipe heater, a pipe type heater is an electric heating device that installs heating tubes in a cylindrical insulated container to heat gases and liquids. The pipe-type heater features fast heating speed, good heat preservation performance and high heating temperature. Gas pipeline heaters are typically used to heat gases such as air and nitrogen, while liquid pipeline heaters are usually used to heat various liquids like water and oil. They can heat the medium to the required temperature in a very short time.
The pipe heater consists of two parts: the main body and the control system. The heating element uses stainless steel pipe as the protective sleeve, high-temperature resistance alloy wire, and crystalline magnesium oxide powder, which are formed by compression process. The control section adopts advanced digital circuits, integrated circuit triggers, high reverse voltage thyristors, etc. to form an adjustable temperature measurement and constant temperature system, ensuring the normal operation of the electric heater.
Product application
1. Heating of chemical materials in the chemical industry, drying of some powders under certain pressure, chemical processes and spray drying.
2. Hydrocarbon heating, including crude petroleum, heavy oil, fuel oil, heat transfer oil, lubricating oil, paraffin, etc
3. Heating of process water, superheated steam, molten salt, nitrogen (air), water gas and other fluids that need to be heated.
4. (Explosion-proof pipe heater) Due to the adoption of advanced explosion-proof structure, the equipment can be widely applied in explosion-proof places such as chemical industry, military industry, petroleum, natural gas, offshore platforms, ships, and mining areas.
Common Product Issues
Fault 1: The digital display meter does not work. Check whether the air switch is closed and whether the control circuit is in good condition.
Fault 2: The temperature of the heater does not rise. Check if the fuse is in good condition and if the gas heater is damaged?
Fault 3: Three-phase imbalance. Check whether there is a phase loss in the three-phase incoming line voltage. Open the protective cover of the gas heater and use a multimeter to check whether each single heating element is open-circuited. Overview of Duct Electric Heaters
The air duct heater is mainly used for heating the air in the air duct. It comes in three specifications: low-temperature, medium-temperature and high-temperature. The common feature in structure is that it uses steel plates to support the electric heating tubes to reduce the vibration of the electric heating tubes when the fan stops. In the junction box, there is an over-temperature control device. The low-temperature type can be directly installed on the air duct, while the medium-temperature type and high-temperature type, due to structural differences, have 100mm thick insulation material sandwished between the outer wall of the channel and the junction box of the heater. On the one hand, this reduces the heat dissipation of the entire channel to the outside; on the other hand, it also lowers the temperature inside the junction cavity.
Structure of the air duct electric heater
1. The air duct heater uses stainless steel heating tubes as the heating element
2. Use carbon steel or stainless steel materials for the support
3. It is composed of a combined connection method
Product features of the duct electric heater
1. The electric heating tube is wrapped with corrugated stainless steel strips on the outside, which increases the heat dissipation area and greatly improves the heat exchange efficiency.
2 The heater is reasonably designed with low air resistance, uniform heating and no high or low temperature dead zones.
3 Dual protection, excellent safety performance. A thermostat and a fuse are installed on the heater, which can be used to control the air temperature in the air duct from being too high and to operate without wind, ensuring absolute safety.
The composition of the product
The air duct heater is composed of several parts such as finned multi-tube tubular electric heating elements, a box body, and a control system. The finned tubular electric heating element is made by placing high-temperature resistance wire inside a metal tube and tightly filling the gap with crystalline magnesium oxide powder that has good insulation and heat conduction performance. Using tubular electric heating elements as the heating body, it features an advanced structure and high thermal efficiency. Air is heated evenly when it is circulating.
Diagnosis and elimination of common faults
Fault 1: The digital display meter does not work.
Check whether the main power supply air switch is closed and whether the control circuit is in good condition.
Fault 2: The temperature of the heater does not rise.
Check if the fuse is in good condition and if the AC contactor is engaged. Is the heater damaged?
Open the protective cover of the air duct heater and use a multimeter to check whether each single electric heating element is open-circuited.
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