The instrument's instrument tube has water as the medium. In order to prevent freezing in winter and block the pipeline, it needs to use electric heat tracing in the heat, and because the pipeline is rusted, high-pressure steam flushing and sewerage are required at regular intervals. The high-pressure steam reaches 400°C or 500°C. the above. At this time, the surface temperature of the instrument tube greatly exceeds the maximum temperature that can be tolerated by the heat belt. For this reason, the current common practice in the industry is to use a double-layer heat insulation structure to ensure the use of the heat strip.
Generally speaking, the inner insulation thickness of this structure is 10-30mm (depending on the surface temperature of the pipe and the temperature resistance level of the cable), aluminum sheath or aluminum tape is sheathed on the insulation layer and laid on it. Electric heat. Each mm insulation layer can reduce the temperature of the sweeper by about 10°C. When the line is swept, the cable should be turned off. The heat loss of the pipeline is still based on the conventional design (the thickness of the insulation layer can only be calculated according to the thickness of the outer layer). Such as: constant power heating cable CWH type, the maximum withstand temperature of 205 °C, and the sweep temperature reaches 400 °C, the inner insulation layer to be applied to the thickness of more than 20mm, to ensure that the tropical heat in the high temperature after the line can still be used normally.
CY250B LARGE PACKAGE Two-for-one Twisting Machine
Features:
Convenient operation ,reasonable transmission ,compact construction and attractive appearance;
Single spindle retracts sides makes it get up and down the yarn at will;
It can possibly omit troubles that other two-for-one twisters need to divide into small yarn cones to produce ,the processes can be decreased ,the efficiency and quality can be improved ;
Manual renegade spindle-breaking system is more easy to operate ,and the longevity of apron belt and spindle will prolong at the same time ;
The reasonable design in the headstock is convenient for changing twist and adjusting the degree of tightness of belt;
The skillful design in pre-take-up roller ensures the pliancy and density of yarns when the CY250B is winding by the degree of tightness.
Applied Yarns
45~1000D kinds of single or multiplied yarns can be twisted(such as DTY.POY.HOY.FDY ,viscose rayon and so on )
Two-For-One Twisting Machine,Twister Machine,Slack Winding Twister Machine,Long Fiber Twister Machine
ZHEJIANG KAICHENG TEXTILE MACHINERY CO.,LTD , http://www.kaichengtex.com