What is the structural difference between a thermal oil pump and an ordinary centrifugal pump?

There are some structural differences between thermal oil pumps and ordinary centrifugal pumps. First of all, thermal oil pumps are usually designed for higher temperatures and pressures because they are mainly used to transport high-temperature thermal oil. In comparison, ordinary centrifugal pumps are usually designed for lower temperatures and pressures. In addition, the sealing structure of the heat transfer oil pump is also different from that of ordinary centrifugal pumps. Since heat transfer oil may have high temperature and high viscosity, heat transfer oil pumps usually use special sealing methods, such as mechanical seals or magnetic seals, to ensure safe and reliable operation of the pump. In addition, thermal oil pumps may be equipped with special cooling devices to keep the pump's operating temperature within the appropriate range. Ordinary centrifugal pumps usually do not require such cooling devices. In general, thermal oil pumps have some special structural designs compared to ordinary centrifugal pumps to adapt to their operating requirements in high-temperature and high-pressure environments. .

The heat transfer oil is at high temperature, and the mechanical seal of ordinary centrifugal pumps will be burned when encountering high temperatures. Thermal oil has viscosity and is considered "oil" after all. Ordinary centrifugal pumps can only be used with clean water.

The difference between a thermal oil pump and an ordinary water pump is that the medium it transports is different. The thermal oil belongs to the oil category. The viscosity and temperature must be considered, and the pressure must also be considered. This has additional requirements for the material and the cooling of key parts. Especially when pressure-temperature coupling is applied, there are higher requirements for material selection. The viscosity also affects the shaft power. For the same flow and pressure requirements, the shaft power must be increased.

What is more obvious is that the pump shaft is relatively long and is suitable for heat dissipation.

There is not much contact. Personally, I think it is due to the mechanical seal requirements and pump heat dissipation requirements, which are higher than ordinary pumps.

Thermal oil pump is more suitable to use magnetic pump

The sealing forms considered in high-temperature design will be different, the sealing materials will also be different, and the flange surface corresponding to the leakage point will also be different.

This kind of pump is difficult to seal and requires expensive bearings.

Just this thing, you deceived me by 5 points?