High-temperature centrifugal pumps need to be preheated before starting
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How do I preheat it? Could everyone give some advice?:) I’d like to learn about it
Under normal conditions, the preheating line of a high-temperature pump remains open at all times; this is to prevent problems from occurring in the operating pump, and to ensure that a backup pump can be switched in promptly in case of an emergency. The pump body should not be preheated too quickly, which is why the preheating line stays open to keep the backup pump in a preheated state. Generally, the preheating line is located on the outlet pipeline of the high-temperature pump. To start the preheating process, the outlet valve should be closed while the preheating valve is opened, as well as the inlet valve of the pump. At first, the valves should not be opened too wide; the preheating temperature should increase at a rate of 20 to 30 degrees per hour. As the temperature rises, the preheating speed can be increased accordingly, by opening the preheating valve more widely.
High-temperature pump casings are generally supported at both ends to prevent alignment issues caused by high temperatures. Both the pump casing and end caps of high-pressure pumps are thick, so high-temperature and high-pressure pumps can be identified by their appearance.