Natural gas engine colliding oil and gas separator

Abstract

The invention discloses a colliding condensation type oil-gas separator for a natural gas engine. The colliding condensation type oil-gas separator comprises an outer release sleeve, a sleeve end cover, an exhaust pipe, a filter element and an air inlet supporting pipe, wherein at least two layers of inner release sleeves which are separately connected with the air inlet supporting pipe sequentially are sleeved with the outer release sleeve; oil-gas jetting holes are formed in the circumferential walls of the inner release sleeves; oil accumulating circular grooves are separately formed in the lower ends of all the inner release sleeves positioned outside the innermost layer of inner release sleeve and the lower end of the outer release sleeve; oil guiding holes are separately formed in the corresponding oil accumulating circular grooves in a penetrating way; an oil accumulating choke tube communicates with the oil guiding hole positioned in the outer release sleeve; an oil-gas mixture can form a colliding condensation phenomenon by using all the oil-gas jetting holes; in addition, by using a separating action of a filter element, the oil-gas mixture is filtered and separated for multiple times; the sleeve end cover can be opened for facilitating cleaning and maintenance at fixed period; accumulated oil is exported outwards layer by layer for collecting by using the oil accumulating circular grooves and the oil guiding holes; and by using the oil accumulating choke tube, the reflow of the mixed oil and gas can be avoided, thereby guaranteeing the colliding condensation effect and improving the separating rate of oil and gas.

Description

Technical field [0001] The invention relates to the technical field of engine parts, in particular to an oil-gas separator used on a natural gas engine. Background technique [0002] In order to prevent engine oil from entering the air intake system of the vehicle, causing pipeline pollution and deterioration of engine combustion performance, resulting in a decrease in engine emissions, oil and gas separators are installed on each motor vehicle. The oil and gas separator is part of the exhaust gas circulation system. It is connected with an independent pipeline. Its function is to decompose the oil vapor in the oil pan and the water vapor escaping from the combustion chamber, and the separated oil film flows along the pipe wall. To the oil pan, the filtered steam enters the engine to form a closed loop or is directly discharged to reduce the air pollution rate. [0003] At present, most of the engine's oil and gas separators use two kinds of structures: labyrinth or centrifugal se...

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Problems solved by technology

[0003] At present, the oil and gas separators of most engines adopt two structures of labyrinth or centrifugal separation. The separation methods of the above two structures generally have the phenomenon of low oil and gas separation efficiency, and there is also the problem of oil and gas backflow. When oil and gas backflow occurs , will cause the resistance in the process of gas separation to be too large, and then cause the oil-gas separation rate to decrease, thus affecting the normal operation of the engine

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