How to extend the service life of the heat transfer oil pump?

The RY-type air-cooled high-temperature heat-conducting oil pump, commonly referred to as a heat-conducting oil pump, high-temperature heat-conducting oil pump, or heat-conducting oil circulating pump, is renowned for its robust structure and versatile performance. This makes it a popular choice across various industries, where its ability to handle high temperatures and maintain excellent sealing properties represents a major advancement in pump technology. These pumps come in single-acting and double-acting configurations, with the former completing one suction and discharge cycle per piston stroke, while the latter accomplishes two such actions simultaneously. Depending on the number of cylinders, they can be classified into single-cylinder, double-cylinder, and triple-cylinder models. For sealing solutions, several options are available. A metal bellows mechanical seal offers a compact design that is easy to install, providing up to 2 to 3 times the lifespan of conventional seals under similar auxiliary systems. The RY heat-conducting oil pump's double-end mechanical seal leverages circulation and external cooling, extending its operational life by 1.5 to 2 times compared to single-end seals. Meanwhile, the single-end seal uses injection flushing with a cooling fluid at approximately 100°C, which should be maintained at a pressure 0.05 to 0.15MPa higher than the sealed cavity. External cooling with hot water (preferably soft water) can further enhance cooling efficiency. Typically, this setup can last for around ten months before requiring maintenance. Friction pairs, whether hard or soft (such as YG6/YG8 or SiC/SiC combinations), provide excellent performance when handling high-viscosity media or those containing small amounts of solid particles or crystalline materials. Considering these sealing structures, let’s analyze the cooling mechanisms of the hot oil pump. The pump features a cooling water jacket around the sealed chamber, allowing cold water to circulate and reduce the chamber temperature to between 200 and 250°C. For single-end seals, injection flushing is employed, using wax oil at approximately 100°C for both temperature reduction and improved operating conditions—a highly effective method. Additionally, external quench water is used to cool the pump, preventing blockages in the drainage system while maintaining optimal performance. Beyond temperature control, these methods ensure smooth operation and longevity of the pump, making it a reliable solution for demanding industrial applications.

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