Marine main engine exhaust device

Abstract

The utility model discloses a marine main engine exhaust device which comprises an exhaust pipe, one end of the exhaust pipe is connected with a main engine exhaust port through a waveform expansion joint, a temperature detection device is arranged on the outer side of the main engine exhaust port, the other end of the exhaust pipe is communicated with a dry type spark extinguishing silencer, and the dry type spark extinguishing silencer is provided with a condensate water pipeline. One end of the dry type spark extinguishing silencer is communicated with a deck exhaust port, the other end of the dry type spark extinguishing silencer is communicated with a deck exhaust port, the exhaust pipe is sequentially coated with an aluminum silicate layer, a glass fiber cloth layer and a galvanized iron plate to play a role in heat insulation, the exhaust pipe comprises an inner pipe, an outer pipe and a connecting wall used for connecting the inner pipe and the outer pipe, and an interlayer space is arranged between the inner pipe and the outer pipe. The interlayer space is filled with heat insulation and fire prevention filler, and the heat insulation and fire prevention filler is matched with the aluminum silicate layer and the glass fiber cloth layer to achieve a good exhaust pipe heat insulation effect.

Description

Technical Field

[0001] The utility model relates to the technical field of ship exhaust, in particular to a ship main engine exhaust device. Background Art

[0002] Ships are generally provided with ship exhaust pipes, which are used to discharge exhaust gas discharged by the main engine, generator set, etc. into the atmosphere to ensure the cleanliness of the air inside the ship and the health of personnel. In the prior art, such as patent CN207064052U, a ship exhaust pipe structure is disclosed, including a ship body, a main engine is arranged in the ship body, and the main engine is connected to an exhaust pipe. A spray barrel is installed on the ship board of the ship body, and the outlet of the exhaust pipe is connected to the inlet of the spray barrel. The outlet of the spray barrel is arranged outside the ship board, and a water inlet is opened on one side of the spray barrel located in the ship body. The exhaust spray barrel is made of S / S316L stainless steel, which reduces the temperature transmitted from the exhaust pipe to the hull and eliminates the problem of aluminum plate becoming brittle due to long-term high temperature. However, no insulation layer is arranged on the outside of the exhaust pipe, which is not conducive to further reducing the temperature transmitted from the exhaust pipe to the hull. Utility Model Content

[0003] The purpose of the utility model is to overcome the above-mentioned defects or problems existing in the background technology and provide a marine main engine exhaust device.

[0004] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0005] A marine main engine exhaust device comprises an exhaust pipe, one end of the exhaust pipe is connected to the main engine exhaust port through a corrugated expansion joint, a temperature detection device is arranged on the outside of the main engine exhaust port, the other end of the exhaust pipe is connected to a dry spark extinguishing muffler, the dry spark extinguishing muffler is provided with a condensate pipeline, a stop valve is arranged on the condensate pipeline, the end of the condensate pipeline is connected to the drainage at the bottom of the ship, the other end of the dry spark extinguishing muffler is connected to the deck exhaust port, a rain cover is installed on the upper part of the deck exhaust port, and the exhaust pipe is coated with an aluminum silicate layer, a glass fiber cloth layer, and a galvanized iron plate in sequence to play a heat insulating role.

[0006] In certain embodiments of the utility model, the exhaust pipe is installed on the top of the cabin through an elastic hanger, and a rubber shock-isolating pad is arranged between the elastic hanger and the exhaust pipe.

[0007] In some embodiments of the present invention, the temperature detection device is a metal sleeve thermometer.

[0008] In certain embodiments of the present invention, the dry spark extinguishing muffler is connected to the deck exhaust port through a second pipe.

[0009] In certain embodiments of the utility model, the exhaust pipe includes an inner pipe, an outer pipe and a connecting wall for connecting the inner pipe and the outer pipe, and a sandwich space is set between the inner pipe and the outer pipe.

[0010] In some embodiments of the present invention, the inner tube is a seamless steel tube.

[0011] In certain embodiments of the present invention, the interlayer space is filled with heat-insulating and fire-proof fillers.

[0012] In certain embodiments of the present invention, the connecting wall includes annular end cover plates located at both ends, a supporting wall is arranged inside the annular end cover plates, and both ends of the supporting wall are respectively connected to the inner tube and the outer tube.

[0013] From the above description of the utility model, it can be seen that compared with the prior art, the utility model has the following beneficial effects:

[0014] 1. The exhaust pipe is made of aluminum silicate layer, glass fiber cloth layer and galvanized iron plate to achieve good heat insulation effect.

[0015] 2. The exhaust pipe includes an inner pipe and an outer pipe. A sandwich space is set between the inner pipe and the outer pipe. The sandwich space is filled with heat-insulating and fire-proof fillers. The heat-insulating and fire-proof fillers, aluminum silicate layers, and glass fiber cloth layers are used to achieve better insulation effects.

[0016] 3. Use dry spark extinguishing muffler to extinguish sparks in the exhaust gas, reduce the occurrence of fire and explosion, make it safer, and at the same time reduce noise, interference and harm to people. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solutions of the embodiments of the utility model, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0018] Figure 1 It is a schematic diagram of the structure of the utility model;

[0019] Figure 2 For the utility model Figure 1 A magnified view of;

[0020] Figure 3 For the utility model Figure 1 B enlarged view;

[0021] Figure 4 It is a schematic diagram of an exhaust pipe of Example 1 of the utility model;

[0022] Figure 5 This is a schematic diagram of the installation of the support wall of the utility model;

[0023] Figure 6 This is a schematic diagram of the arrangement of the marine main engine of the utility model;

[0024] Figure 7 It is a schematic diagram of an exhaust pipe of Example 3 of the utility model;

[0025] Description of main reference numerals:

[0026] 1. Exhaust pipe, 10. Corrugated expansion joint, 11. Aluminum silicate layer, 12. Glass fiber cloth layer, 13. Galvanized iron plate, 14. Inner pipe, 15. Outer pipe, 16. Annular end cover plate, 17. Support wall, 18. Mezzanine space, 2. Marine main engine, 20. Main engine exhaust port, 3. Cabin, 30. Auxiliary engine, 4. Dry spark extinguishing muffler, 40. Condensate pipeline, 41. Stop valve, 5. Second pipeline, 6. Deck exhaust port, 7. Temperature detection device. DETAILED DESCRIPTION

[0027] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are preferred embodiments of the utility model and should not be regarded as excluding other embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the utility model.

[0028] In the claims, specification and the above-mentioned drawings of the utility model, unless otherwise clearly defined, the use of terms such as "first", "second" or "third" etc. is to distinguish different objects rather than to describe a specific order.

[0029] In the claims, specification and the above-mentioned drawings of the utility model, unless otherwise explicitly defined, directional words, such as the terms "center", "lateral", "longitudinal", "horizontal", "vertical", "top", "bottom", "inside", "outside", "up", "down", "front", "back", "left", "right", "clockwise", "counterclockwise", etc., indicating directions or positional relationships are based on the directions and positional relationships shown in the drawings, and are only for the convenience of describing the invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific direction or be constructed and operated in a specific direction, and therefore cannot be understood as limiting the specific protection scope of the invention.

[0030] In the claims, specification and the above drawings of the utility model, unless otherwise clearly defined, if the term "fixed connection" or "fixed connection" is used, it should be understood in a broad sense, that is, any connection method without a displacement relationship and relative rotation relationship between the two, that is to say, including non-detachable fixed connection, detachable fixed connection, integrated connection and fixed connection through other devices or elements.

[0031] In the claims, specification and drawings of the present utility model, if the terms "include", "have" and their variations are used, they are intended to mean "including but not limited to".

[0032] Example 1, see Figure 1-5 :

[0033] A marine main engine exhaust device comprises an exhaust pipe 1, which is used to discharge the exhaust gas generated by each marine main engine 2. The marine main engine 2 is provided with a main engine exhaust port 20, and one end of the exhaust pipe 1 is connected to the main engine exhaust port 20 through a corrugated expansion joint 10, and the corrugated expansion joint 10 can compensate for the thermal expansion difference caused by different wall temperatures, reduce the corresponding temperature difference stress, and effectively play a role in compensating axial deformation; the other end of the exhaust pipe 1 is connected to a dry spark extinguishing muffler 4, and the other end of the dry spark extinguishing muffler 4 is connected to a deck exhaust port 6. The dry spark extinguishing muffler 4 can extinguish the sparks in the discharged exhaust gas and reduce the noise.

[0034] As an implementation mode, the exhaust pipe 1 is installed on the top of the cabin 3 through an elastic hanger. The elastic hanger is easy to install, has good impact resistance, a large dynamic load safety factor, and a good seismic isolation effect. Preferably, a rubber seismic isolation pad is arranged between the elastic hanger and the exhaust pipe 1 to achieve a better seismic isolation effect.

[0035] As an implementation mode, the exhaust pipe 1 is coated with an aluminum silicate layer 11, a glass fiber cloth layer 12, and a galvanized iron plate 13 in sequence. The aluminum silicate layer 11, the glass fiber cloth layer 12, and the galvanized iron plate 13 cooperate with each other to achieve a good heat insulation effect.

[0036] The exhaust pipe 1 includes an inner pipe 14 , an outer pipe 15 , and a connecting wall for connecting the inner pipe 14 and the outer pipe 15 . An interlayer space 18 is provided between the inner pipe 14 and the outer pipe 15 .

[0037] Preferably, the inner tube 14 is made of a seamless steel tube, and the thickness of the galvanized iron plate 13 is 0.5-1 mm.

[0038] As an embodiment, the connecting wall includes an annular end cover plate 16 located at both ends, and the annular end cover plates 16 at both ends are used to close the interlayer space 18 between the inner tube 14 and the outer tube 15. A support wall 17 is arranged inside the annular end cover plate 16, and the two ends of the support wall 17 are respectively welded to the outside of the inner tube 14 and the inside of the outer tube 15. It can be understood that the outer tube 15 is welded by two half-pipes, and after the inner tube 14 is placed inside the two half-pipes, the connecting wall is welded on the outside of the inner tube 14, and then the half-pipes are welded to the outside of the connecting wall.

[0039] As an implementation mode, the interlayer space 18 is filled with a fireproof heat-insulating filler, and the fireproof heat-insulating filler is combined with the aluminum silicate layer 11, the glass fiber cloth layer 12, and the galvanized iron plate 13 to achieve a better heat-insulating effect.

[0040] As an implementation manner, the corrugated expansion joint 10 is a stainless steel corrugated expansion joint.

[0041] As an implementation mode, the dry spark extinguishing muffler 4 is connected to the deck exhaust port 6 through the second pipe 5 .

[0042] The dry spark extinguishing silencer 4 is provided with a condensate pipe 40, on which a stop valve 41 is arranged, and the end of the condensate pipe 40 is connected to the bottom drainage of the ship. Preferably, the stop valve 41 is a marine flange cast steel stop valve.

[0043] A rain cover is installed on the upper part of the deck exhaust port 6 , and the rain cover effectively prevents rainwater from entering the deck exhaust port 6 .

[0044] A temperature detection device 7 is disposed outside the main engine exhaust port 20 , and the temperature detection device 7 is used to detect the temperature of the exhaust gas generated by the marine main engine 2 .

[0045] Preferably, the temperature detection device 7 is arranged on one side of the exhaust pipe 1 close to the corrugated expansion joint 10, and the temperature detection device 7 is a metal sleeve thermometer.

[0046] Example 2, see Figure 6 :

[0047] Repeat Example 1, but the number of exhaust pipes 1 is at least two, any one exhaust pipe 1 is connected to the main engine exhaust port 20, and the other exhaust pipe 1 is connected to the exhaust port of the auxiliary engine 30. Specifically, the auxiliary engine 30 is a diesel generator set, a boiler, an emergency generator set, or an incinerator.

[0048] It can be understood that the marine main engine 2 and the auxiliary engine 30 are arranged in the cabin 3 .

[0049] Example 3, see Figure 7 :

[0050] The embodiment 1 is repeated, but the exhaust pipe 1 is not provided with an inner pipe, an outer pipe and a connecting wall, and the exhaust pipe 1 adopts a seamless pipe for ships.

[0051] The description of the above specification and embodiments is used to explain the protection scope of the utility model, but does not constitute a limitation on the protection scope of the utility model. Through the enlightenment of the utility model or the above embodiments, ordinary technicians in this field can obtain modifications, equivalent replacements or other improvements to the embodiments of the utility model or part of the technical features thereof through logical analysis, reasoning or limited experiments, which should be included in the protection scope of the utility model.

Claims

1. A marine main engine exhaust device, characterized in that: The invention comprises an exhaust pipe (1), one end of which is connected to a main engine exhaust port (20) via a corrugated expansion joint (10), a temperature detection device (7) is arranged outside the main engine exhaust port (20), the other end of which is connected to a dry spark extinguishing silencer (4), the dry spark extinguishing silencer (4) is provided with a condensate pipe (40), a stop valve (41) is arranged on the condensate pipe (40), the end of the condensate pipe (40) is connected to a drainage point at the bottom of the ship, the other end of the dry spark extinguishing silencer (4) is connected to a deck exhaust port (6), a rain cover is installed on the upper part of the deck exhaust port (6), and the exhaust pipe (1) is coated with an aluminum silicate layer (11), a glass fiber cloth layer (12), and a galvanized iron plate (13) in sequence.

2. A marine main engine exhaust device according to claim 1, characterized in that: The exhaust pipe (1) is installed on the top of the cabin (3) via an elastic hanger, and a rubber shock-isolating pad is arranged between the elastic hanger and the exhaust pipe (1).

3. A marine main engine exhaust device according to claim 1, characterized in that: The temperature detection device (7) is a metal sleeve thermometer.

4. A marine main engine exhaust device according to claim 1, characterized in that: The dry spark extinguishing silencer (4) is connected to the deck exhaust port (6) via a second pipe (5).

5. A marine main engine exhaust device according to any one of claims 1 to 4, characterized in that: The exhaust pipe (1) comprises an inner pipe (14), an outer pipe (15) and a connecting wall for connecting the inner pipe (14) and the outer pipe (15); an interlayer space (18) is provided between the inner pipe (14) and the outer pipe (15).

6. A marine main engine exhaust device according to claim 5, characterized in that: The inner tube (14) is made of a seamless steel tube.

7. A marine main engine exhaust device according to claim 6, characterized in that: The interlayer space (18) is filled with heat-insulating and fire-proof fillers.

8. The marine main engine exhaust device according to claim 6, characterized in that: The connecting wall comprises an annular end cover plate (16) located at both ends, a supporting wall (17) is arranged inside the annular end cover plate (16), and both ends of the supporting wall (17) are respectively connected to the inner tube (14) and the outer tube (15).

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