In the industrial heating equipment industry, flanged electric heating pipes are a kind of pipeline heater with higher application frequency. With their own high power advantages, flanged electric heating pipes have been widely used. In addition, flanged electric heating pipes are generally used. All are used to heat the liquid, and all are also called immersion liquid heating tubes. So in the industrial production of electric heating equipment, the installation method of flange tubular heater has become a problem that everyone cares about. This problem needs to be fully considered in advance when everyone is designing the heating tube. Due to the different installation methods, the design of the heating tube is also different.
Selection of flange installation and fixation method
1. The external thread is fixed. (Wire flange tubular heater)
There are two ways to fix the external thread, one is to open the container, the female tooth ring is welded on the container immediately, and the threaded flange heating tube can be screwed on the tooth ring immediately, and the other is convenient It is a thicker material for the vessel, with a hole in it, the heating tube is crossed, and the external thread of the large hexagonal nut and the threaded heating tube can be used to forbid it (the middle of the multi-faceted sealing ring).
2. Mutual matching female flange connection (flange tubular heater in plan view)
After the customer clarifies the main parameters of the flange, it is equipped with a suitable female flange. The flange and the female flange are fixed according to the anchor bolts, and the sealing gasket is fixed. It can also be used for high tightness regulations. In the original, electric welding was basically carried out to weld the airtightness.
Installation orientation of the flange tubular heater
The installation orientation of the flange electric heating tube is generally horizontal installation with a hole at the bottom of the side and vertical installation from top to bottom (or from bottom to top).
These two installation methods should be considered when designing the heating tube. The key to the design scheme is the determination of the cold zone and hot zone of the heating tube. In the case of vertical installation, when the water level line in the vessel heated by the heating tube is not full of oil, part of the heating tube is free from the water level line, because the output power load of the heating tube for heating liquid substances far exceeds that of dry heating The output power load, therefore, the flange heating pipe cannot get rid of the dry water. Therefore, in the vertical installation condition, if all the heating pipes can not be maintained to heat up in the water, it is recommended that the customer set aside a part of the cold end (cold end). The size of the selection is based on the lower water level line), and do a good job of the water level controller. When the bottom of the side is installed horizontally, it can basically prevent dry burning. However, in the case of horizontal installation, we must consider the problem of the length of the heating tube. Because of the force hazard, the horizontal installation side has a small total bearing area and the company has a large bearing capacity. Therefore, the main parameters of the flange selection should be moderate. Give full consideration to this issue.
