Hongtai--Electric Tube Heating Element
Jacky JiangEmail: sales01@hongtaiheater.comWhatsApp / Mob: +133 3895 8611
In the use of industrial heating equipment, electric heating pipes are very familiar to enterprises, but due to different understandings, the differentiation has led to some misunderstandings about electric heating pipes. The following Yancheng Hongtai Alloy Electric Apparatus Co.,Ltd will give you some understanding of electric heating tubes.
The concept of Electric tube heating element:
Electric heating tube is also known as heating tube, heating tube, scientific name tubular electric heater element. The coiled heating wire (resistance wire) is placed in the metal tube. The metal tube is used as the shell (including stainless steel and copper tube), and the spiral electric heating alloy wire (nickel chromium, iron chromium) is evenly distributed along the central axis of the tube Alloy) The voids are filled and compacted with crystalline magnesium oxide powder with good heat resistance, thermal conductivity and insulation. The two ends of the nozzle are sealed with silica gel and processed by other processes. This metal armored heating element can heat air, metal molds and various liquids. The service life of electric heating tubes is very long. The general design service life is more than 10,000 hours. It is more like Yancheng Hongtai's far-infrared radiant heating element, which can have 5 heating seasons.Electric tube heating element composition:
The typical structure of the metal tubular electric heating tube (the most popular structure) is generally composed of 5 parts: insulator, sealing material, lead rod, filler, heating wire, metal sheath tube, and terminal.
Characteristics of Electric tube heating element:
The electric heating tube has the characteristics of simple structure, high mechanical strength, high thermal efficiency, safety and reliability, simple and convenient installation, long service life and no pollution.Application of Electric tube heating element:
It is widely used in various saltpeter tanks, water tanks, oil tanks, acid-base tanks, fusible metal melting furnaces, air heating furnaces, drying furnaces, drying ovens, hot compression molds and other devices.Common classification of Electric tube heating element:
1. According to the outlet mode, it can be divided into single-head electric heating tube and double-head electric heating tube.2. According to the material classification, it can be divided into stainless steel electric heating tube, quartz electric heating tube, Teflon electric heating tube, titanium electric heating tube
3. According to the shape classification, it can be divided into straight electric heating tube, U-shaped electric heating tube, L-shaped electric heating tube, W-shaped electric heating tube, fin electric heating tube, special-shaped electric heating tube
4. According to the use classification, it can be divided into dry burning electric heating tube and water burning electric heating tube
5. According to the heating method, it can be divided into conventional resistance heating tube and radiant electric heating tube.
Recommended value of surface load of Electric tube heating element:
Pipe diameter load value (Wcm²)
φ6 ～ φ10 ≤22
φ10.1 ～ φ14 ≤20
φ14.1 ～ φ18 ≤16
φ18.1 ～ φ22 ≤12
φ22.1 ～ φ40 ≤10
(Note: The above surface load generally refers to the metal mold heating and water heating can be multiplied by 2 to 2.5. Air heating is 50% to 60%.)
Electric tube heating element voltage selection:
The conventional voltage specifications of electric heating tubes: 24V, 36V, 48V, 110V, 220V, 380V, usually the voltage we refer to is the rated voltage.Rated voltage of Electric tube heating element:
The rated voltage of the electric heating tube refers to the voltage connected to the electric heating tube specified in the redesign and marked on the outer shell of the electric heating tube. Or in other words, the rated voltage is the voltage given when the customer requests us to process and produce. Generally there are 24V, 48V, 110V, 220V, 380V and so on.Working voltage of Electric tube heating element:
(1) Multiple series power supplies. For a group of multiple electric heating tubes or electric heating tubes connected in series to the power supply, the working voltage of the electric heating tube refers to the voltage connected to this group of electric heating tubes specified in the design.(2) Single-connected power supply. For a single heating tube connected to the power supply, the working voltage of the heating tube refers to the voltage connected to the component specified in the design, that is, the rated voltage.
Note: This involves multiple electric heating tubes connected in series or in parallel. Therefore, when judging the voltage, if multiple electric heating tubes need to be connected, it is necessary to consider whether they are connected in series or in parallel in order to determine the voltage of a single electric heating tube.
Electric tube heating element calculation formula:
1. Power calculation formulaP = U2 / R
(P stands for power, U stands for voltage, R stands for resistance)
2. Formula for calculating arc length
L = nπR / 180 °
(L stands for length, n stands for angle, π stands for 3.14, R stands for radius)
3. Calculation formula of surface load;
W = Φ (diameter) x 3.14 (π) x L (actual heating length) x W (standard surface load)
Electric heating tube current calculation formula:
Single phase: current (I) = power (P) / voltage (220V)
Three-phase: current (I) = power (P) /1.73·voltage (380V)
Electric tube heating element is an electric heater that specifically converts electrical energy into thermal energy. It is widely used in various heating occasions. There are many manufacturers of electric heaters and many brands of electric heating tubes. Co., Ltd., the electric heating pipes produced by this enterprise have a long service life, and the service life can reach more than 10,000 hours. Enterprises can customize non-standard electric heating tubes according to user needs. Enjoy a high reputation in the industry.
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