Xiaobai seeks advice on canned pumps
Thread Content
As I have shifted from the oil refining and hydrogenation industry to working in the PX (xylene) sector, I am exposed to equipment that I have not encountered before; therefore, I would like to ask the experienced colleagues what CNMK and 30/4 on the nameplate of the shielded pump mean Some pump housings are equipped with self-flushing lines at both ends; at what temperature of the medium inside the pump is it necessary to install such flushing lines? At what temperature above does a shielded pump become considered a high-temperature pump? The seventh image shows a plunger-type metering pump, with the inlet and outlet on the same straight line. Is the driving force similar to that of a compressor piston compression? Are there pressure-limiting valves for liquid intake and discharge at the top and bottom (similar to the intake and exhaust valves of a compressor)? The eighth and ninth images show hydrogen water coolers; why is water circulated in and out from below in these cases? What is the structure of this type of heat exchanger? I would be grateful if you could offer your guidance. Thank you!
Find Haymitch’s manual; it contains an explanation of the information on the nameplate
The outlet diameter is 30 mm, grade 4; shielded pumps generally require flushing to cool the motor, and those with a capacity of over 100 fall into the high-temperature category.