A Labyrinth Seal Oil Scraper Ring
A labyrinth seal and oil scraping ring technology, applied in the direction of engine sealing, engine components, mechanical equipment, etc., can solve the problems of reducing the working life of the oil scraping ring 05, damaging the oil scraping ring and oil leakage, improving the oil seal, etc., to achieve maintenance. Ease of use, enhanced sealing performance, reduced leakage
Active Publication Date: 2016-04-20
HUDONG HEAVY MACHINERY
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Problems solved by technology
The inner wall of the existing oil scraper ring 05 is in full contact with the journal of the crankshaft 02, so huge frictional heat will be generated during operation, thereby increasing the temperature of the oil seal, which will damage the oil scraper ring 05 and cause oil leakage on the one hand, and on the other hand It also greatly reduces the working life of the scraper ring 05
Method used
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[0029] The present invention will be further described below in conjunction with the accompanying drawings and embodiments, but the protection scope of the present invention cannot be limited by this.
[0030] The invention provides a labyrinth sealing oil scraping ring, which can better seal the crankshaft of the marine diesel engine and reduce the leakage of lubricating oil. The so-called labyrinth seal means that a number of annular throttling teeth arranged in sequence are arranged around the rotating shaft, and a series of throttling gaps and eddy current cavities are formed between the teeth. Flow effect, so as to achieve the purpose of leak prevention.
[0031] see figure 1 with figure 2 , the labyrinth seal scraper ring is installed in the groove 32 of the casing 03 of the marine diesel engine crankshaft seal device (see Figure 10 ), and placed on the crankshaft 02, the crankshaft 02 inside the labyrinth seal oil scraper ring is also sleeved with an oil throwing r...
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The invention discloses a labyrinth-sealing scrapper ring which is mounted in a groove of a housing of a crankshaft sealing device for a marine diesel engine. The labyrinth-sealing scrapper ring comprises an upper scrapper ring and a lower scrapper ring which are semicircular and connected through a bolt. The upper scrapper ring and the lower scrapper are connectively combined to form an annular hole in the middle for a crankshaft to be inserted, the outer side of the sealing scrapper ring along the direction of oil flow is a pushing end, and the inner side of the same is a free end. The section of the annular hole arranged at the free end is an unthreaded hole, and a plurality of annular throttle teeth are arranged on the wall of the section of the annular hole at the pushing end. Leakage of lubricating oil is reduced by means of throttling effect and flow reduction effect generated when the oil medium passes throttle gaps and a vortex cavity, sealing performance and reliability of the device are improved, and the labyrinth-sealing scrapper ring has the advantages of convenience in manufacturing and maintenance, long service life and the like and is quite applicable to the crankshaft sealing device of the marine diesel engine at the high temperature, high pressure and high speed.
Description
technical field [0001] The invention relates to an oil scraper ring structure of a diesel engine, in particular to a labyrinth seal oil scraper ring for a large marine diesel engine, and belongs to the technical field of diesel engines. Background technique [0002] In all kinds of construction machinery and equipment, there are a variety of sealing devices. The sealing forms are various and diverse, and their functions and principles are also different. During use, they can be reasonably selected according to the actual use occasions and working conditions. sealed form. [0003] With the increasing frequency of international trade, ships have become the first choice for international trade transportation due to their advantages of large loading capacity and low price. However, with the development of the shipping industry, the density of ships is increasing, the navigation environment is becoming more and more complex, and the potential risk of pollution caused by ships an...
Claims
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IPC IPC(8): F16J15/447
Inventor 林海洋徐颖龙丁一
Owner HUDONG HEAVY MACHINERY