CN214577316U

CN214577316U - Exhaust pipe of ship engine

Info

Publication number: CN214577316U
Application number: CN202022622196.1U
Authority: CN
Inventors: 晏志清; 林军强; 黄承信; 匡剑; 袁华琴
Original assignee: Jianglong Shipbuilding Co Ltd
Current assignee: Jianglong Shipbuilding Co Ltd
Priority date: 2020-11-13
Filing date: 2020-11-13
Publication date: 2021-11-02
Anticipated expiration: 2030-11-13

Abstract

The utility model aims at providing a can prevent that the bulkhead from warping, dismantling convenience, range of application wide and can reduce the marine engine blast pipe of discharging fume. The utility model discloses an exhaust inner tube and cooling jacket, the cooling jacket cover is established on the outer wall of exhaust inner tube, cooling jacket with the cooperation of exhaust inner tube forms the cooling cavity, the one end of exhaust inner tube is connected with the engine gas vent of boats and ships, be equipped with the cooling water import on the cooling jacket and sluicing the structure, the exhaust inner tube passes through cooling jacket passes the boats and ships bulkhead. The utility model discloses be applied to the technical field of blast pipe.

Description

Exhaust pipe of ship engine

Technical Field

The utility model discloses be applied to the technical field of blast pipe, in particular to marine engine blast pipe.

Background

In an aluminum alloy ship, when a steel main engine exhaust pipe penetrates through an outer plate of a ship body, a cabin penetrating mode of a double-sided seat plate is usually adopted, and the temperature of the exhaust gas of the main engine is very high and is in direct contact with the ship body, so that heat is transferred to an aluminum alloy cabin wall, the temperature of the cabin wall around the seat plate is too high, and the cabin wall deforms and leaks after a long time.

SUMMERY OF THE UTILITY MODEL

The utility model aims to solve the technical problem that overcome prior art not enough, provide one kind can prevent that the bulkhead from warping, dismantling convenience, range of application wide and can reduce the marine engine blast pipe that discharges fume.

The utility model adopts the technical proposal that: the utility model discloses an exhaust inner tube and cooling jacket, the cooling jacket cover is established on the outer wall of exhaust inner tube, cooling jacket with the cooperation of exhaust inner tube forms the cooling cavity, the one end of exhaust inner tube is connected with the engine gas vent of boats and ships, be equipped with the cooling water import on the cooling jacket and sluicing the structure, the exhaust inner tube passes through cooling jacket passes the boats and ships bulkhead.

According to the scheme, the cooling sleeve is arranged on the outer wall of the exhaust inner pipe and serves as a connecting structure with the cabin wall, so that heat dissipation is enhanced, and heat transferred to the cabin wall is reduced. The cooling water inlet is connected with a water supply structure in the ship, so that water is supplied to the cooling cavity, and the heat dissipated by the exhaust inner pipe is taken away by the cooling water, so that the heat transfer is further reduced. And the cooling water is output through the water drainage structure, so that a water flow passage is formed, and the cooling is continuously performed. This structure can be applied to a bulkhead in which the exhaust pipe is inside the vessel, and also to a bulkhead portion in which the exhaust pipe is discharged to the outside of the vessel through the bulkhead.

Preferably, both ends of the cooling jacket are provided with annular sealing plates, and the water drainage structure is located on the annular sealing plates close to one end of the air outlet of the exhaust inner pipe.

In the above solution, it can be seen that the sealing is achieved by using the two annular sealing plates as end caps of the cooling jacket.

In a further preferred embodiment, the water drainage structure comprises a plurality of spray holes distributed on the annular sealing plate in a circumferential array, and the spray holes are matched with the air outlet of the exhaust inner pipe.

It is thus clear that by above-mentioned scheme, through adopting a plurality of that the array set up the hole sprays as sluicing structure, and then carries out spraying of cooling water in the gas outlet department of blast pipe, and then cools down the waste gas of dispatching, reduces the particulate matter in the waste gas simultaneously, and the pollution abatement.

Further preferably, the drainage structure comprises a drainage hole 7 arranged at the lower end of the annular sealing plate, and the drainage hole 7 is connected with an external drainage pipeline.

As can be seen from the above, the drain hole 7 connected to the drain pipe is used as a drain structure, and the circulation of the cooling water inside the ship is further realized.

The cooling sleeve is provided with a flange structure matched with the annular flange outer disc.

According to the scheme, the structural strength of the annular sealing plate is reinforced by adopting a flange connection mode at one end, close to the air inlet of the exhaust inner pipe, so that the high temperature of the exhaust inner pipe is prevented from influencing the structure of the annular sealing plate, and the safety performance is improved.

Preferably, the outer wall of the cooling sleeve is coated with heat insulation cotton.

According to the scheme, the heat insulation cotton is arranged to reduce the influence of exhaust heat on the internal environment of the cabin.

Preferably, the inner diameter of the cooling sleeve is 40-60 mm larger than the outer diameter of the exhaust inner pipe.

Drawings

Fig. 1 is a schematic structural diagram of a first embodiment of the present invention;

fig. 2 is a schematic structural diagram of a first embodiment of the present invention.

Detailed Description

The first embodiment is as follows:

as shown in fig. 1, in this embodiment, the utility model discloses an exhaust inner tube 1 and cooling jacket 2, cooling jacket 2 cover is established on the outer wall of exhaust inner tube 1, cooling jacket 2 with the cooperation of exhaust inner tube 1 forms cooling chamber 3, the one end of exhaust inner tube 1 is connected with the engine gas vent of boats and ships, be equipped with cooling water inlet 4 and sluicing structure on cooling jacket 2, exhaust inner tube 1 passes through cooling jacket 2 passes the boats and ships bulkhead.

In this embodiment, both ends of the cooling jacket 2 are provided with annular sealing plates 5, and the water drainage structure is located on the annular sealing plate 5 near one end of the air outlet of the exhaust inner pipe 1.

In this embodiment, the drainage structure includes a drainage hole 7 disposed at the lower end of the annular sealing plate 5, and the drainage hole 7 is connected to an external drainage pipeline.

In this embodiment, an annular flange outer disc is arranged on the annular sealing plate 5 close to one end of the air inlet of the exhaust inner pipe 1, and a flange structure matched with the annular flange outer disc is arranged on the cooling sleeve 2.

In this embodiment, the outer wall of the cooling jacket 2 is covered with heat insulation cotton.

In the present embodiment, the inner diameter of the cooling jacket 2 is 40 to 60 mm larger than the outer diameter of the exhaust inner pipe 1.

Example two:

as shown in fig. 2, the present embodiment is different from the first embodiment in that: the water drainage structure comprises a plurality of spray holes 6 which are distributed on the annular sealing plate 5 in a circumferential array, and the spray holes 6 are matched with the air outlet of the exhaust inner pipe 1.

Claims

1. A marine engine exhaust pipe characterized in that: the cooling device comprises an exhaust inner pipe (1) and a cooling sleeve (2), wherein the cooling sleeve (2) is sleeved on the outer wall of the exhaust inner pipe (1), the cooling sleeve (2) is matched with the exhaust inner pipe (1) to form a cooling chamber (3), one end of the exhaust inner pipe (1) is connected with an engine exhaust port of a ship, a cooling water inlet (4) and a water drainage structure are arranged on the cooling sleeve (2), and the exhaust inner pipe (1) penetrates through the cabin wall of the ship through the cooling sleeve (2); the both ends of cooling jacket (2) all are provided with annular shrouding (5), the sluicing structure is located and is close to the gas outlet one end of exhaust inner tube (1) on annular shrouding (5), the sluicing structure is including being circumference array distribution a plurality of holes (6) that spray on annular shrouding (5), and is a plurality of spray hole (6) with the gas outlet cooperation of exhaust inner tube (1).

2. The exhaust pipe for a marine engine according to claim 1, wherein: the water drainage structure comprises a water drainage hole (7) arranged at the lower end of the annular sealing plate (5), and the water drainage hole (7) is connected with an external water drainage pipeline.

3. The exhaust pipe for a marine engine according to claim 1, wherein: an annular flange outer disc is arranged on the annular sealing plate (5) close to one end of the air inlet of the exhaust inner pipe (1), and a flange structure matched with the annular flange outer disc is arranged on the cooling sleeve (2).

4. The exhaust pipe for a marine engine according to claim 1, wherein: the outer wall of the cooling sleeve (2) is coated with heat insulation cotton.

5. The exhaust pipe for a marine engine according to claim 1, wherein: the inner diameter of the cooling sleeve (2) is 40-60 mm larger than the outer diameter of the exhaust inner pipe (1).