Year1
- 型号：
- 齐全
- 规格：
- 定做
- 功率：
- 定制
1. Introduction to single-ended electric heating tube with mounting baffle:
Single-ended electric heating tube, also called single-ended electric heating tube and cartridge electric heating tube (r), is a type of electric heating tube (tubular electric heating element). China's electric heating industry has a model with a long-standing title:. In the late 1990s, due to the widespread use of electric heating pipes in China, many electric heating pipes for molds with one end out of the wire were called single-head electric heating pipes or single-ended electric heating pipes in southern China. In foreign countries, it is called a cartridge heater, which is also a vivid name because the cartridge shell is cylindrical and one end is blocked. In China, it is called a single-head electric heating tube, which is a coincidence. The single-ended electric heating pipe with installation baffle produced by Yancheng Zhaishi Electric Heating and Electrical Factory is welded with a stainless steel positioning baffle to the ordinary single-ended electric heating pipe to facilitate customers to install and position the electric heating pipe.
2. Structure of single-head electric heating pipe with mounting baffle
The typical structure of a single-head electric heating pipe (the most popular structure) is the same as that of an electric heating pipe and generally consists of several parts: insulator, sealing material, lead rod , filler, heating wire, metal sheath tube, terminals. The spiral heating wire and the lead-out are located in the center of the metal sheath tube. Its manufacturing process is to penetrate the spiral heating wire into the seamless steel pipe, copper pipe or aluminum pipe and fill the gaps evenly with a multi-tube filling machine that is both insulating and thermally conductive. Oxidizing medium such as crystalline magnesia powder (alumina or clean quartz sand can also be used). Then use a pipe shrinking machine to reduce the diameter of the pipe to make the oxide medium dense (density reaches ./above) to ensure that the center position of the electric heating wire and air isolation does not shift and hit the pipe wall. so. The amount of heat generated per unit area can be increased more than ten times. The service life can also be correspondingly increased to more than 10 years. Compared with electric heating elements with the same large amount of heat, tubular electric heating tubes can save 50% of electric heating materials and the thermal efficiency can reach more than 10%.
3. The difference between single-head electric heating pipes with mounting baffles and other electric heating pipes:
Appearance: Single-head electric heating pipes have wires coming out of one end (one end). Ordinary electric heating pipes have wires coming out of both ends.
. Internal structure: The winding method of single-head electric heating tubes is different from that of ordinary electric heating tubes. Especially the current imitation imported single-head electric heating tubes are very different from ordinary electric heating tubes.
. Manufacturing process: The production process of single-head electric heating tubes has more processes than ordinary electric heating tubes, such as tube shrinkage, which ensures that single-head electric heating tubes have higher power and longer use time than ordinary electric heating tubes.
4. Performance requirements for single-head electric heating tubes with mounting baffles
, Heating time: under the test voltage, the time for the component to rise from the ambient temperature to the test temperature should not be greater than
, Rated power deviation: Under the condition of sufficient heating, the deviation of the rated power of the component should not exceed the following specified range;
. For components with rated power less than or equal to: &;%.
b. For components whose rated power is greater than +%~-% or the larger of the two.
, leakage current:
, cold leakage current and leakage current after water pressure and sealing test should not exceed.
b. Hot leakage current at operating temperature should not exceed in the formula Calculated value but the maximum does not exceed
/(&;.)
&;Thermal leakage current
&;Heating length
- Operating temperature ℃
, multiple components When connected in series to the power supply, the leakage current test should be conducted on this group of components as a whole.
, Insulation resistance
During factory inspection, the cold insulation resistance should not be less than &;
b. The insulation resistance after long-term storage or use after sealing test should not be less than &;
. The thermal insulation resistance at operating temperature should not be lower than the calculated value in the formula but the minimum should not be less than &;
R
『(-.)/』&;.
R&; Thermal insulation resistance &;
&;Heating length
&;Operating temperature ℃
, Insulation withstand voltage strength: The component should be maintained under the specified test conditions and test voltage without flashover and Breakdown phenomenon
, Ability to withstand power on and off: the component should be able to undergo multiple power on and off tests under the specified test conditions without damage
, Overload capability: The component should be able to withstand power on and off under the specified test conditions and input It should withstand multiple cycle overload tests under power without damage
, Heat resistance: The components should withstand multiple cycle heat resistance tests without damage under the specified test conditions and test voltages
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