The correct way to inspect and install the tubular heater
The cartridge heater is widely used, so how to fix the electric cartridge heater is correct in the actual application process?
1. The electric cartridge heater does not need to be fixed during the common mold heating process. It is directly installed in the heating hole for heat transfer. It is necessary to install a fixed electric cartridge heater. The general way of Gansu electric tubular heater is to weld an installation thread on the basis of the electric cartridge heater, which usually has specifications such as 6 points and 1 inch.
2. U-shaped electric cartridge heater, it can be said that the basic electric cartridge heater needs to be installed, all can be installed with fasteners.
3. Flange-type electric cartridge heater. The characteristic of this electric cartridge heater is that it is easier to install.
Flange installation methods are generally divided into flat flange installation and threaded flange installation, flat flange installation, the female flange needs to be welded to the box, and then the flange on the flat flange electric cartridge heater closely, the threaded flange installation is to tap the thread on the fixed plate, and then directly screw the threaded flange on.
Inspection method of electric tubular heater:
1. Use resistance test, cold state withstand voltage test and cold state insulation test for inspection.
2. Power test, thermal insulation test, thermal withstand voltage test, leakage current test.
3. Tidal test, salt spray test, life test and other mechanical tests.
In addition, a simple inspection method is introduced: first wipe the surface of the tubular heater clean, turn on the AC 220V power supply, and then dry it in the air, and immediately turn off the power when the surface is red, and wait until the tubular heater is completely cooled. Wipe clean and there is no black oxidized powder on the white paper, then this electric tubular heater is of high quality.
