CN105065080A

CN105065080A - Large-rocking-angle oil pan of marine diesel engine

Info

Publication number: CN105065080A
Application number: CN201510542679.1A
Authority: CN
Inventors: 姜旭龙; 王凯; 张双成; 张德志
Original assignee: CNR Dalian Locomotive and Rolling Stock Co Ltd
Current assignee: CRRC Dalian Co Ltd
Priority date: 2015-08-29
Filing date: 2015-08-29
Publication date: 2015-11-18

Abstract

The invention discloses a large-rocking-angle oil pan of a marine diesel engine. A lower pan is arranged under the middle of an upper pan in an overlapped mode, the length of the upper pan is larger than that of the lower pan, and the section of the upper pan and the section of the lower pan are each a U-shaped pocket-type oil pan. A middle filter screen is installed on the upper surface of the upper pan, the middles of the tops of two side plates are each provided with an engine oil dipstick installing hole. A top plate is connected with the bottom face of an engine body of the diesel engine. The front end of the upper pan is connected with a pump supporting box, and the rear end of the upper pan is connected with a big oil seal. The bottom of the front end of the upper pan is provided with an oil suction port, and an oil discharge port is formed in the bottom at the same end of the lower pan. By adopting the technical scheme, when the rocking angle of a ship exceeds the normal required angle under special conditions, it can be guaranteed that when the ship is inclined by 10 degrees in the longitudinal direction or inclined by 30 degrees in the transverse direction, engine oil does not overflow at the highest liquid level and is not completely sucked at the lowest liquid level. The rotation surface of a crank shaft, a connecting rod and a damper make no contact with the oil surface, and the normal operation of a diesel engine unit can still be guaranteed.

Description

The large swing angle oil sump of marine diesel engine

Technical field

The present invention relates to the large swing angle oil sump of a kind of marine diesel engine, belong to Diesel Engine Technique Field.

Background technique

Oil sump is positioned at the bottom of diesel engine, and for storing machine oil, machine oil provides lubrication for driving mechanism.According to the requirement that Classification of Vessel specification (CCS2006 version) requires marine diesel engine group should meet ship inclination to wave, namely when boats and ships trim 5 °, heel 15 °, pitching 7.5 °, rolling 22.5 °, diesel engine unit can run well, diesel engine is often according to above-mentioned condition design oil sump, it is made to meet ship inclination requirement, can when boats and ships trim 5 °, heel 15 °, diesel oil function runs well, machine oil can be met do not overflow when the highest liquid level, do not inhale sky when minimum liquid level, bent axle, connecting rod and vibration damper turning surface can not contact pasta.But time when ship's navigation as run into the extreme natural environment such as hurricane, billow, its inclination swing angle is greater than trim 5 °, heel 15 ° sometimes, easily cause oil sump oil spilling or emptying phenomenon, have a strong impact on the lubrication and cooling of rotary component in diesel engine, bring very large impact to the reliable operation of diesel engine unit, have a strong impact on the reliable operation of diesel engine unit.

Summary of the invention

The object of the invention is to the deficiency overcoming prior art, provide a kind of and under severe physical environment, when Ship Swaying angle exceeds normal requirement angle, can should be able to ensure the large swing angle oil sump of the marine diesel engine of diesel engine unit reliable operation.

The object of the invention is to be achieved through the following technical solutions, the large swing angle oil sump of a kind of marine diesel engine, in bottom, upper drain pan neutral position, superposition is provided with lower drain pan, and the length of upper drain pan is greater than the length of lower drain pan, the pocket formula oil sump that the section of upper drain pan and lower drain pan takes the shape of the letter U; Filter screen in the middle of the upper surface of upper drain pan is installed, the crown center position of biside plate is respectively provided with dipstick mounting hole, and top board is connected with diesel-engine body bottom surface, and upper drain pan front end is connected with pump supporting box, and upper drain pan rear end is connected with large oil sealing; Be provided with inlet port in the front bottom end of upper drain pan, be provided with oil drain out in the same bottom portion of lower drain pan.

In order to realize object of the present invention better, the width of described lower drain pan is consistent with upper drain pan, and the Length Value Scope of lower drain pan is 1291 to 1550mm, and depth value scope is 450 to 600mm.

The invention has the beneficial effects as follows, by adopting this technological scheme, when making boats and ships its angle of oscillation exceed normal requirement angle under special circumstances, trim 10 °, heel 30 ° of machine oil also can meet and do not overflow when the highest liquid level, sky is not inhaled when minimum liquid level, bent axle, connecting rod and vibration damper turning surface can not contact pasta, still can ensure that diesel engine unit normally runs.

Accompanying drawing explanation

Fig. 1 is marine diesel engine of the present invention large swing angle oil pan structure schematic diagram;

Fig. 2 is the plan view of marine diesel engine of the present invention large swing angle oil pan structure schematic diagram;

Fig. 3 is the plan view of the new large swing angle oil pan structure of marine diesel engine of this practicality.

Fig. 4 is the right elevation of the new large swing angle oil pan structure of marine diesel engine of this practicality;

Fig. 5 is the new marine diesel engine large swing angle oil sump practical application schematic diagram of this practicality.

In figure: filter screen in the middle of 1-; 2-dipstick mounting hole; 3-top board; 4-inlet port; The upper drain pan of 5-; 6-oil drain out; Drain pan under 7-; 8-pump supporting box; The large oil sealing of 9-; 10-diesel-engine body.

Embodiment

For making goal of the invention of the present invention, technological scheme and advantage clearly, below in conjunction with the accompanying drawing in the embodiment of the present invention, carry out clear intactly describing to technological scheme of the present invention, obviously, described embodiment is the present invention's part embodiment, instead of whole embodiments.Based on the embodiment in the present invention, those of ordinary skill in the art, not making the every other embodiment obtained under creative work prerequisite, belong to the scope of protection of the invention.

See accompanying drawing, the large swing angle oil sump of marine diesel engine of the present invention, adopts Plate Welding wet sump, and in bottom, upper drain pan 5 neutral position, superposition is provided with lower drain pan 7, the length of upper drain pan 5 is greater than the length of lower drain pan 7, the pocket formula oil sump that the section of upper drain pan 5 and lower drain pan 7 takes the shape of the letter U; Filter screen 1 in the middle of the upper surface of upper drain pan 5 is installed, the crown center position of biside plate is respectively provided with dipstick mounting hole 2, top board 3 is fixed together by bolt and diesel-engine body 10 bottom surface, upper drain pan 5 front end is fixed together by bolt and pump supporting box 8, and upper drain pan 5 rear end is fixed together by bolt and large oil sealing 9; Be provided with inlet port 4 in the front bottom end of upper drain pan 5, be provided with oil drain out 6 in the same bottom portion of lower drain pan 7.

Aboard ship, lubricating oil in oil sump needs when low liquid level to prevent in rolling, when pitching or two kinds of situations occur simultaneously, inlet port 4 occurs inhaling sky, liquid level from inlet port 4 apart from away from more, inhale empty possibility less, and oil sump adopts pocket formula structure, can when low liquid level oil mass be constant, increase the distance of liquid level from inlet port 4, thus reduce the possibility that inlet port 4 inhales sky, but because the lubricating oil in oil sump needs to prevent in rolling in high liquid level, when pitching or two kinds of situations occur simultaneously, lubricating oil is scraped on crank up face, like this during high liquid level, liquid level can not from the hypotelorism at crank up center.See Fig. 3 and Fig. 4, because oil mass in oil sump is certain, oil sump can not arbitrarily increase, for when ensureing Ship Swaying the highest liquid level time do not overflow, do not inhale sky when minimum liquid level, be designed to the pocket formula structure of given volume, i.e. oil sump length, the degree of depth, width value and a × b × c=definite value, width c value is determined to can be considered definite value by diesel engine width, then a × b also can be considered definite value, when Ship Swaying, carried out the optimum size of matching a, b by the change of fluid.The width c value of lower drain pan 7 is consistent with upper drain pan 5, and length a value and the depth b value of lower drain pan 7 change each other, and length a value scope is 1291 to 1550mm, and depth b value scope is 450 to 600mm.The span of degree of depth b, for being greater than 450mm, is less than 600mm, and the best is 500mm, and when b value for a during 450mm is 1722mm, when b value is 500mm, a value is 1550mm, and when b value is 600mm, a value is 1291mm.

This structure reduces the impact that ship inclination waves to greatest extent, can when boats and ships trim 10 °, heel 30 °, and when namely " waving greatly ", diesel oil function runs well, and namely machine oil can meet and do not overflow when the highest liquid level, does not inhale sky when minimum liquid level.

Claims

1. the large swing angle oil sump of marine diesel engine, it is characterized in that: in upper drain pan (5) bottom, neutral position, superposition is provided with lower drain pan (7), the length of upper drain pan (5) is greater than the length of lower drain pan (7), the pocket formula oil sump that the section of upper drain pan (5) and lower drain pan (7) takes the shape of the letter U; Filter screen (1) in the middle of the upper surface of upper drain pan (5) is installed, the crown center position of biside plate is respectively provided with dipstick mounting hole (2), top board (3) is connected with diesel-engine body (10) bottom surface, upper drain pan (5) front end is connected with pump supporting box (8), and upper drain pan (5) rear end is connected with large oil sealing (9); Be provided with inlet port (4) in the front bottom end of upper drain pan (5), be provided with oil drain out (6) in the same bottom portion of lower drain pan (7).

2. the large swing angle oil sump of marine diesel engine according to claim 1, it is characterized in that: the width of described lower drain pan (7) is consistent with upper drain pan (5), the Length Value Scope of lower drain pan (7) is 1291 to 1550mm, and depth value scope is 450 to 600mm.