Download Leak-Free Pumps and Compressors Handbook by G. Vetter PDF

By G. Vetter

As environmental laws touching on leaks and emissions tightens this sensible reference guide is a needs to for all these concerned with platforms utilizing leak-free (or seal-less) pumps or compressors. This instruction manual will enable you comprehend a few of the designs and houses of leak-free pumps and choose definitely the right pump or compressor to make sure leak loose platforms regardless of the program.

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Extra resources for Leak-Free Pumps and Compressors Handbook

Sample text

35 P CUR ~P 1O830 . = ,"< Dynamic curve of the torque on the motor and pump using a soft Magnetic drives on pumps 45 Safety requirements Technical standard For some time to come, the main fields of application for pumps with magnetic couplings will inevitably be found in the chemical and process industries. This fact must not only be catered to from a design point of view, but the stringent safety requirements applicable in these branches of industry also have to be met. To begin with, the demand for the smallest possible leakage rate can be easily fulfilled by providing the motor can with a static seal.

In this case, the temperature in a metal can would go up very rapidly and steeply. In order to stop damage from occurring or temperature limits from being exceeded, a liquid level indicator should be fitted, or other adequate precautions taken, in particular in those areas which are subject to explosion hazards. A further point worth noting is that an extended period of improper operation with the valve closed, or an interruption of the flow due to a blocked or broken-off inner magnet as a result of overloading, can cause an increase in the outer temperature of the can as well as the temperature of the liquid inside the pump.

50... 000... 475 U CUR JP 108S Dynamic curve of the torque on the motor and pump sides at break- Magnetic drives on pumps 43 non-stationary magnetic fields are generated by the poles present. g. to the sleeve bearings or the shaft/hub connections. From Fig. g. the magnet holder on the motor side, the size of the magnetic drive can be kept smaller and, therefore, more economic. For actual pump and motor data the design range may also start in the crossshaded area just below the limiting curve.

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