CN215057693U

CN215057693U - Engine exhaust pipe cooling system

Info

Publication number: CN215057693U
Application number: CN202120913461.3U
Authority: CN
Inventors: 唐克远; 黄永仲; 李伟
Original assignee: Guangxi Yuchai Machinery Co Ltd
Current assignee: Guangxi Yuchai Marine and Genset Power Co Ltd
Priority date: 2021-04-29
Filing date: 2021-04-29
Publication date: 2021-12-07
Anticipated expiration: 2031-04-29

Abstract

The utility model discloses an engine vent-pipe cooling system belongs to blast pipe water cooling system field, solves the problem that current water cooling system water flow resistance is big, cooling efficiency is low. This cooling system includes the water-cooling blast pipe, the water-cooling blast pipe in be equipped with the exhaust chamber, be equipped with the blast pipe water jacket in the outlying water-cooling blast pipe in the exhaust chamber, the exhaust chamber communicate through every exhaust passage one-to-one of exhaust manifold and engine cylinder lid, every exhaust manifold outlying engine cylinder lid is last all to be equipped with a plurality of delivery ports that communicate the cylinder lid water jacket of engine cylinder lid and blast pipe water jacket, cooling system still include the shunt tubes, every cylinder lid water jacket that engine cylinder lid corresponds all communicates with the shunt tubes. The utility model discloses an engine vent-pipe cooling system can not only reduce the rivers resistance, improves cooling efficiency, has rationally optimized cooling system's structure moreover, extension cooling system's life.

Description

Engine exhaust pipe cooling system

Technical Field

The utility model relates to an exhaust pipe water cooling system, more specifically say, it relates to an engine exhaust pipe cooling system.

Background

The engine exhaust pipe is a main carrier for high-temperature gas emission, and high-temperature gas is conveyed inside the engine exhaust pipe, so that the surface temperature of the exhaust pipe is higher, meanwhile, in order to reduce the emission temperature of the gas, the engine exhaust pipe is generally a water-cooling exhaust pipe, and the exhaust pipe and the gas are cooled by arranging a cooling system on the exhaust pipe. The existing water-cooling exhaust pipe is usually designed by adopting water flow along the direction of the exhaust passage or reversely, and the structure causes the problem of water flow blockage at each manifold of the exhaust pipe, so that the exhaust pipe generates a large area flow dead zone, the cooling efficiency is low, and the overall reliability of the exhaust pipe is seriously influenced.

SUMMERY OF THE UTILITY MODEL

The to-be-solved technical problem of the utility model is not enough to the above-mentioned of prior art, and its purpose provides an engine exhaust pipe cooling system, can reduce the cooling water flow resistance, improves cooling efficiency.

The technical scheme of the utility model is one such: the utility model provides an engine exhaust pipe cooling system, includes the water-cooling blast pipe, the water-cooling blast pipe in be equipped with the exhaust chamber, be equipped with the blast pipe water jacket in the outlying water-cooling blast pipe in exhaust chamber, the exhaust chamber communicate, every through every exhaust passage one-to-one of exhaust manifold and engine cylinder lid exhaust manifold outlying engine cylinder lid on all be equipped with a plurality of delivery ports with the cylinder lid water jacket and the blast pipe water jacket intercommunication of engine cylinder lid, cooling system still include the shunt tubes, every cylinder lid water jacket that engine cylinder lid corresponds all communicates with the shunt tubes.

As a further improvement, one end of the engine cylinder cover is provided with a water inlet, and one side of the water-cooling exhaust pipe and one side of the flow dividing pipe are provided with water outlets.

Furthermore, the joint of the exhaust manifold and the water-cooling exhaust pipe bends and extends towards one side of the exhaust direction in an arc shape, and the water outlet is over against the joint of the exhaust manifold and the water-cooling exhaust pipe.

Furthermore, the water-cooling exhaust pipe is located on the side face of the engine cylinder cover, and the shunt pipe is located on the top face of the engine cylinder cover.

Furthermore, one side of the water-cooling exhaust pipe is provided with a plurality of fixing lugs, and one end of each fixing lug extends into the exhaust pipe water jacket and is connected with the inner wall of the exhaust pipe water jacket.

Advantageous effects

Compared with the prior art, the utility model, have following advantage:

1. the utility model discloses an engine vent-pipe cooling system adopts at least one shunt tubes parallelly connected with water-cooling blast pipe to discharge the cooling water reposition of redundant personnel of every cylinder cap water jacket, adopts the play water structure of shunting for only partial rivers pass through in the blast pipe water jacket in the water-cooling blast pipe, compares current full-flow water flow mode, can reduce the cooling water flow resistance for the velocity of water, and then improves cooling efficiency.

2. The utility model discloses an engine vent-pipe cooling system, the mode that every cylinder cap water jacket all adopted many water outlets is through exhaust manifold all around and in the exhaust pipe water jacket of afflux water-cooling blast pipe for cooling water can be even cooling in participating in the exhaust pipe water jacket of water-cooling blast pipe, and, because the cooling water is from a plurality of directions, a plurality of positions get into in the exhaust pipe water jacket, therefore, no dead zone around exhaust manifold, there is better cooling to the exhaust chamber, reduce local dead angle and cause the problem that the cooling is not in place, improve the overall reliability of blast pipe.

Drawings

Fig. 1 is a schematic perspective view of the present invention;

fig. 2 is a schematic top view of the cross-sectional structure of the present invention;

FIG. 3 is an enlarged schematic view of a top view cross-sectional structure of a single cylinder head water jacket according to the present invention;

fig. 4 is a schematic side view of the cross-sectional structure of the present invention; .

Wherein: 1-water-cooled exhaust pipe, 2-exhaust cavity, 3-exhaust pipe water jacket, 4-exhaust manifold, 5-engine cylinder cover, 6-exhaust passage, 7-cylinder cover water jacket, 8-water outlet, 9-shunt pipe, 10-water inlet, 11-water outlet and 12-fixing lug.

Detailed Description

The invention will be further described with reference to specific embodiments shown in the drawings.

Referring to fig. 1-4, a method for cooling an engine exhaust pipe is to use at least one shunt pipe 9 connected in parallel with a water-cooled exhaust pipe 1 to shunt and discharge cooling water of each cylinder head water jacket 7, wherein the cooling water of each cylinder head water jacket 7 passes through the periphery of an exhaust manifold 4 by adopting a mode of multiple water outlets 8 and is converged into an exhaust pipe water jacket 3 of the water-cooled exhaust pipe 1.

Specifically, one shunt pipe 9 is arranged, the shunt pipe 9 is communicated with each cylinder cover water jacket 7, and cooling water of the cylinder cover water jacket 7 is introduced into the shunt pipe 9; the four water outlets 8 are uniformly distributed around the exhaust manifold 4, and cooling water in the cylinder cover water jacket 7 can be introduced around the exhaust manifold 4. In other embodiments, two shunt tubes 9 can be provided, and a plurality of parallel water paths are provided, so that the water flow resistance is smaller; six water outlets 8 may be provided to better introduce cooling water around the exhaust manifold 4.

An engine exhaust pipe cooling system comprises a water-cooled exhaust pipe 1, an exhaust cavity 2 is arranged in the water-cooled exhaust pipe 1, an exhaust pipe water jacket 3 is arranged in the water-cooled exhaust pipe 1 at the periphery of the exhaust cavity 2, the exhaust cavity 2 and each exhaust passage 6 of an engine cylinder cover 5 are communicated with high-temperature gas of the engine cylinder cover 5 in a one-to-one correspondence mode through the exhaust passages 6 to the exhaust manifold 4 and then enter the exhaust cavity 2 to achieve the purpose of gas emission, a plurality of water outlets 8 for communicating a cylinder cover water jacket 7 of the engine cylinder cover 5 with the exhaust pipe water jacket 3 are arranged on the engine cylinder cover 5 at the periphery of each exhaust manifold 4, cooling water in the cylinder cover water jacket 7 can be introduced to the periphery of the exhaust manifold 4, the cooling system further comprises a shunt pipe 9, wherein each cylinder cover water jacket 7 corresponding to the engine cylinder cover 5 is communicated with the shunt pipe 9, and part of water flowing into the exhaust pipe water jacket 3 flows into the shunt pipe 9, to reduce the water flow resistance of the exhaust pipe water jacket 3.

The utility model discloses an engine vent-pipe cooling system adopts at least one shunt tubes 9 parallelly connected with water-cooling blast pipe 1 to discharge the cooling water reposition of redundant personnel of every cylinder cap water jacket 7, adopts the play water structure of shunting, the cooling water of cylinder cap water jacket 7 is partly shunted by shunt tubes 9 for blast pipe water jacket 3 in the water-cooling blast pipe 1 only has partial rivers to pass through, form the parallelly connected structure in water route, compare current full-flow formula rivers mode, can reduce the cooling water flow resistance, accelerate the velocity of water flow, and then improve cooling efficiency.

And simultaneously, the utility model discloses an engine exhaust pipe cooling system, every cylinder cap water jacket 7's cooling water all adopts many water outlets 8's mode to pass through around exhaust manifold 4 and converge in water-cooled exhaust pipe 1's blast pipe water jacket 3, introduce exhaust manifold 4 around with the cooling water in the cylinder cap water jacket 7, make the cooling water can be even participate in cooling in water-cooled exhaust pipe 1's blast pipe water jacket 3, and, because the cooling water is from a plurality of directions, a plurality of positions get into in the blast pipe water jacket 3, therefore, no dead zone around exhaust manifold 4, there is better cooling to exhaust chamber 2, reduce local dead angle and cause the not problem that the cooling is in place, improve the overall reliability of blast pipe.

Preferably, one end of the engine cylinder cover 5 is provided with a water inlet 10 for supplying water to the cylinder cover water jacket 7, and the water outlet 11 is arranged on one side of the water-cooling exhaust pipe 1 and one side of the shunt pipe 9, so that the water can be conveniently discharged.

Preferably, the junction of exhaust manifold 4 and water-cooling exhaust pipe 1 is bent to exhaust direction one side arc and is extended, makes things convenient for gaseous emission, and delivery port 8 just to exhaust manifold 4 and water-cooling exhaust pipe 1's junction, plays the rapid cooling to gas striking department, further improves the cooling effect.

Preferably, the water-cooling exhaust pipe 1 is located on the side face of the engine cylinder cover 5, and the shunt pipe 9 is located on the top face of the engine cylinder cover 5, so that the structure of the cooling system is reasonably optimized.

Preferably, a plurality of fixing lugs 12 are arranged on one side of the water-cooled exhaust pipe 1, and one end of each fixing lug 12 extends into the exhaust pipe water jacket 3 and is connected with the inner wall of the exhaust pipe water jacket 3, so that the structural strength of the water-cooled exhaust pipe 1 is improved, and the water-cooled exhaust pipe 1 is convenient to fix.

The above is only the preferred embodiment of the present invention, and it should be noted that for those skilled in the art, without departing from the structure of the present invention, several modifications and improvements can be made, which will not affect the utility model and the utility of the patent.

Claims

1. The utility model provides an engine exhaust pipe cooling system, includes water-cooling blast pipe (1), water-cooling blast pipe (1) in be equipped with exhaust chamber (2), be equipped with blast pipe water jacket (3) in exhaust chamber (2) outlying water-cooling blast pipe (1), exhaust chamber (2) through every exhaust passage (6) one-to-one intercommunication of exhaust manifold (4) and engine cylinder lid (5), its characterized in that, every all be equipped with a plurality of delivery ports (8) with cylinder lid water jacket (7) and blast pipe water jacket (3) intercommunication of engine cylinder lid (5) on exhaust manifold (4) outlying engine cylinder lid (5), cooling system still include shunt tubes (9), every cylinder lid water jacket (7) that engine cylinder lid (5) correspond all communicate with shunt tubes (9).

2. The cooling system for the exhaust pipe of the engine as claimed in claim 1, wherein a water inlet (10) is arranged at one end of the engine cylinder head (5), and a water outlet (11) is arranged at one side of the water-cooling exhaust pipe (1) and one side of the shunt pipe (9).

3. The cooling system for the exhaust pipe of the engine as claimed in claim 1, wherein the joint of the exhaust manifold (4) and the water-cooled exhaust pipe (1) is curved and extended towards one side of the exhaust direction, and the water outlet (8) is over against the joint of the exhaust manifold (4) and the water-cooled exhaust pipe (1).

4. An engine exhaust pipe cooling system according to claim 1, characterized in that the water-cooled exhaust pipe (1) is located at the side of the engine cylinder head (5), and the shunt pipe (9) is located at the top surface of the engine cylinder head (5).

5. The engine exhaust pipe cooling system according to any one of claims 1 to 4, characterized in that one side of the water-cooled exhaust pipe (1) is provided with a plurality of fixing lugs (12), and one end of each fixing lug (12) extends into the exhaust pipe water jacket (3) and is connected with the inner wall of the exhaust pipe water jacket (3).