Oil scraper ring structure of reciprocating piston compressor

By optimizing the oil scraper ring structure of the reciprocating piston compressor, the problem of lubricating oil leakage is solved, the oil return effect is enhanced, and the service life of the equipment is extended.

CN223374612UActive Publication Date: 2025-09-23BEFAR GROUP CO LTD
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Patent Information

Application Number
CN202423080232.0
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2024-12-13
Publication Date
2025-09-23
Estimated Expiration
2034-12-13

AI Technical Summary

Technical Problem

When the existing reciprocating piston compressor is conveying propylene, the scraper ring frequently leaks oil, causing lubricating oil to enter the isolation packing and main packing, resulting in seal failure and increased friction temperature of the piston rod, which affects the life of the equipment.

Method used

An oil scraper ring structure is designed, including a first ring body, a second ring body and a third ring body. By arranging oil return grooves, springs and fan-shaped oil return grooves on the ring bodies, the elasticity and clearance of the springs are optimized, the number and patency of the oil return grooves are increased, and multiple groups of oil return grooves are formed to reduce wear and oil leakage.

Benefits of technology

It effectively reduces the leakage of lubricating oil, enhances the oil return effect, reduces the friction temperature of the piston rod, and extends the service life of the equipment.

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Abstract

The utility model discloses an oil scraper ring structure of a reciprocating piston compressor, which belongs to the technical field of oil scraper rings, and comprises an oil scraper ring, a first ring body, a second ring body and a third ring body, the oil scraper ring is formed by sequentially splicing the first ring body, the second ring body and the third ring body, oil return grooves are formed in the middles of the first ring body, the second ring body and the third ring body, springs are installed in the oil return grooves, gaps are formed between the springs and the edges of the oil return grooves, and six first fan-shaped oil return grooves are formed in each of one side of the first ring body and the two sides of the second ring body; original six oil return holes are changed into twelve second fan-shaped oil return grooves, original O-shaped holes are changed into fan-shaped holes, the oil return smoothness of the end face and the oil return grooves is increased, the spring is optimized according to the calculated elastic quantity, the elastic quantity is changed into 5mm from 7mm, the width allowance of a gap of 1.5 mm is increased from the full groove of the spring, and abrasion caused by overlarge compression quantity is reduced.
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