Heat transfer oil pump in all the heat transfer oil pump is a relatively good quality and has a special range of applications. However, stainless steel pumps also have some unexpected malfunctions at work, such as downtime. We need to analyze the main reasons for downtime, so as to avoid unnecessary damage to the machine in the future. Thermal oil pump downtime is mainly caused by the failure of the mechanical seal. Mainly due to the failure of the performance of the leak, there are several reasons for leakage: ①static and dynamic ring sealing surface leakage, the main reasons are: flatness of the end surface roughness does not meet the requirements, or scratch the surface; particulate matter between the ends, resulting in two Face can not be the same run; installation is not in place, the way is not correct. ② compensation ring seal leakage, mainly due to: gland deformation, uneven pre-tightening; installation is not correct; seal quality does not meet the standards; seal selection wrong. After the heat-conducting oil pump stops running, the requirements are as follows: ①Conveying the heat-conducting oil pump that is easy to crystallize, easy to coagulate, easy to precipitate and so on, stop the blockage after stopping the pump, and rinse the heat-conducting oil pump and pipe with clean water or other media in time. ② high-temperature thermal oil pump should be stopped according to the provisions of equipment and technical documents, parking should be 20-30 min each turn plate half a circle until the thermal pump body temperature dropped to 50 ℃ so far. ③ Low-temperature heat transfer oil pump stop, when no special requirements, the heat transfer oil pump should always be filled with liquid; suction valve and discharge valve should be kept normally open state; the use of double-ended mechanical seal of the low temperature heat transfer oil pump, liquid level controller and pump seal chamber The sealing liquid should maintain the pump grouting pressure. ④ Centrifugal pump should stop running after the pump population valve, to be cooled and then turn off the auxiliary system valves. Exhaust the liquid stored in the pump to prevent corrosion and cracking.
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