Oil bearing expansion machine capable of monitoring oil leakage

Abstract

The invention relates to an oil bearing expansion machine capable of monitoring oil leakage. The oil bearing expansion machine comprises a machine body. Sealing covers used for isolating process gas from lubricating oil are arranged at the two ends of the machine body respectively. A partition plate is arranged between each sealing cover and the machine body. The sealing covers, the partition plates and the two ends of the machine body are each provided with a sealing gas inlet and an oil leakage monitoring hole spaced in the circumferential direction and correspondingly communicated. Ball valves are arranged on hole openings of the sealing gas inlet and the oil leakage monitoring hole in the two ends of the machine body respectively. By means of the oil bearing expansion machine, the lubricating oil in the sealing covers can be monitored and prevented from entering the process gas, so that safety performance is improved, and maintenance cost is reduced.

Description

technical field [0001] The invention relates to the field of air separation, in particular to an oil bearing expander capable of monitoring oil leakage. Background technique [0002] The expander is the key stand-alone machine to realize the transition from small and medium-sized air separation equipment to large-scale air separation equipment. Therefore, the bearing lubrication method in the air separation equipment has developed from gas lubrication to oil lubrication, which has large bearing capacity, high reliability, long service life, and easy maintenance. However, if the sealing sleeve in the oil bearing expander fails, the lubricating oil will leak from the sealing sleeve to the impeller and mix with the process gas. In the light case, the equipment will freeze and stop, and in severe cases, it will cause serious explosion. Accidents, and the heat exchanger or fractionation tower needs to be cleaned and blown off during maintenance, which is very expensive. For this ...

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Problems solved by technology

[0002] The expander is the key stand-alone machine to realize the transition from small and medium-sized air separation equipment to large-scale air separation equipment. Therefore, the bearing lubrication method in the air separation equipment has developed from gas lubrication to oil lubrication, which has large bearing capacity, high reliability, long service life, and easy maintenance. However, if the sealing sleeve in the oil bearing expander fails, the lubricating oil will leak from the sealing sleeve to the impeller and mix with the process gas. In the light case, the equipment will freeze and stop, and in severe cases, it will cause serious explosion. Accidents, and the heat exchanger or fractionation tower needs to be cleaned and blown off during maintenance, which is very expensive. For this reason, we have developed an oil bearing expander that can monitor oil leakage, and can dynamically monitor the lubricating oil in the sealing sleeve. Monitoring prevents lubricating oil from entering the process gas, thereby improving safety performance and saving maintenance costs

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