CN111734518A - Compact boat board side exhaust system - Google Patents
Compact boat board side exhaust system Download PDFInfo
- Publication number
- CN111734518A CN111734518A CN202010742591.5A CN202010742591A CN111734518A CN 111734518 A CN111734518 A CN 111734518A CN 202010742591 A CN202010742591 A CN 202010742591A CN 111734518 A CN111734518 A CN 111734518A
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- CN
- China
- Prior art keywords
- exhaust
- pipe
- exhaust system
- outlet
- silencer
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
- F01N13/00—Exhaust or silencing apparatus characterised by constructional features ; Exhaust or silencing apparatus, or parts thereof, having pertinent characteristics not provided for in, or of interest apart from, groups F01N1/00 - F01N5/00, F01N9/00, F01N11/00
- F01N13/08—Other arrangements or adaptations of exhaust conduits
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
- B63B—SHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING
- B63B17/00—Vessels parts, details, or accessories, not otherwise provided for
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
- F01N13/00—Exhaust or silencing apparatus characterised by constructional features ; Exhaust or silencing apparatus, or parts thereof, having pertinent characteristics not provided for in, or of interest apart from, groups F01N1/00 - F01N5/00, F01N9/00, F01N11/00
- F01N13/007—Apparatus used as intake or exhaust silencer
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
- F01N13/00—Exhaust or silencing apparatus characterised by constructional features ; Exhaust or silencing apparatus, or parts thereof, having pertinent characteristics not provided for in, or of interest apart from, groups F01N1/00 - F01N5/00, F01N9/00, F01N11/00
- F01N13/14—Exhaust or silencing apparatus characterised by constructional features ; Exhaust or silencing apparatus, or parts thereof, having pertinent characteristics not provided for in, or of interest apart from, groups F01N1/00 - F01N5/00, F01N9/00, F01N11/00 having thermal insulation
Abstract
The invention discloses a compact boat board side exhaust system, which sequentially comprises: the heat-insulating ship comprises a main engine outlet reducer pipe, an omega-shaped exhaust expansion joint, an exhaust bent pipe, a side exhaust square silencer, an exhaust bent pipe, an exhaust baffle valve, a side connection pipe, a side diversion cap, a water outlet device and the like, wherein a heat-insulating layer is arranged in the side exhaust square silencer, the heat-insulating layers are laid outside an exhaust pipe and pipeline accessories, and an exhaust system is fixed on a ship body structure through an elastic hanging bracket. The system adopts various measures to ensure that seawater cannot enter the main machine when the boat sails, and can effectively avoid the vibration of the main machine and the heat transfer to the hull structure.
Description
Technical Field
The invention relates to a compact boat board side exhaust system, relates to a design of preventing seawater from entering a host in a compact space inner board side exhaust system, and belongs to the technical field of boat design.
Background
The small high-speed boat generally adopts a ship type with a single-layer all-through main deck, and mainly adopts side or tail exhaust and less adopts chimney exhaust. In order to meet the requirement of total propulsion power, a high-speed boat is generally provided with a plurality of low-power high-speed main engines to solve the problem that a single high-power main engine cannot be arranged, and then the engine room is arranged compactly, and the main engine driving an outer shaft system is often close to a side. The host close to the side is limited by the height of a main deck, the width of a ship and the structure of a ship body of the side, the design difficulty of a side exhaust system is high, a silencer and an exhaust pipe accessory are too close to the side, and the silencer is not generally designed in a conventional mode to directly exhaust to the side.
In addition, when the ship is in heavy waves or rolling at a large inclination angle, seawater is easy to flow backwards in the side exhaust system to cause the host to be blocked and even enter water, so that the host cannot normally work, and the navigation safety of the ship is influenced.
Disclosure of Invention
In view of the shortcomings of the prior art, the present invention provides a broadside exhaust system capable of preventing host from being blocked or flooded in a compact space.
In order to achieve the above object, the present invention provides a compact side exhaust system for a boat, comprising, in order from a main engine exhaust outlet to a side outlet: the heat-insulating ship comprises a main engine outlet reducer pipe, an omega-shaped exhaust expansion joint, an exhaust bent pipe, a side exhaust square silencer, an exhaust bent pipe, an exhaust baffle valve, a side connection pipe, a side diversion cap, a water outlet device and the like, wherein a heat-insulating layer is arranged in the side exhaust square silencer, the heat-insulating layers are laid outside an exhaust pipe and pipeline accessories, and an exhaust system is fixed on a ship body structure through an elastic hanging bracket.
The inlet of the host outlet reducer pipe is connected with the host exhaust outlet, and the outlet of the host outlet reducer pipe is connected to the omega-shaped exhaust expansion joint.
The interior of the omega-shaped exhaust expansion joint consists of a plurality of groups of corrugated pipes with omega-shaped corrugations, the inlet is connected with the reducer pipe at the outlet of the main machine, and the outlet is connected with the exhaust elbow; the compensation quantity of the axial direction, the radial direction and the angle of the omega-shaped exhaust expansion joint can absorb the vibration displacement quantity and the expansion and contraction deformation quantity of the exhaust port and the exhaust system of the host.
The square muffler for the side row is different from the traditional cylindrical muffler with two ends entering and exiting in shape and internal muffling structure, the height size is smaller, the heat-insulating layer is arranged in the muffler body, the inlet is positioned on the upper part of the front end surface, the outlet is positioned close to the bottom of the rear end surface, the inlet is connected with the self-exhaust bent pipe, the outlet is connected with the exhaust bent pipe, and the height difference exists between the inlet and the outlet; the bottom is provided with a discharge port; the top is provided with a mounting bracket which can be elastically mounted on the hull structure; the surface temperature of the side row square silencer is less than or equal to 60 ℃.
The exhaust elbow is a three-dimensional elbow; the exhaust elbow is an elbow with a plane space.
The inlet of the exhaust baffle valve is connected with the self-exhaust elbow, and the outlet of the exhaust baffle valve is connected with the side connecting pipe; the exhaust baffle valve is internally provided with a cooling water cavity, the diameter of the inner wall of the exhaust baffle valve is the same as that of the exhaust elbow, the diameter of the outer wall of the exhaust baffle valve is the same as that of the side connection pipe, and a certain number of small circular holes are formed in the inner wall of the exhaust baffle valve in the circumferential direction; the outer wall of the exhaust baffle valve is provided with a water inlet for cooling seawater; the exhaust baffle valve is internally provided with an exhaust baffle, the exhaust channel can be opened or closed through an exhaust baffle operating device, and the operating device is internally provided with a travel switch and can output an opening or closing switching value signal to the outside.
The side connecting pipe is connected with a self-exhaust baffle valve, and the outlet is welded on the hull outer plate.
The side diversion cap is a diversion structure between the part of the side connecting pipe extending out of the hull outer plate and the hull.
The water sluicer can discharge accumulated water in the side exhaust square silencer and carry out water sealing on exhaust.
The invention has the beneficial effects that:
1. the square muffler of the side row is square, the height size is small, and the limited height space can be reasonably utilized; the inlet and the outlet of the square silencer at the side row are double staggered in height and direction, so that the risk that seawater rushes into the silencer and then enters the main engine when the ship is in heavy storms or is in heavy inclination rolling is reduced; the inside noise-eliminating structure of the square muffler for the side exhaust can block reverse flow of seawater, and can form a ponding cavity and discharge internal ponding through the discharge hole.
3. Compared with the traditional waveform expansion joint, the adopted omega-shaped exhaust expansion joint has larger axial, radial and angle compensation quantities under the same length, can reasonably utilize limited height space, and can absorb the vibration displacement quantity and the expansion and contraction deformation quantity of the exhaust port and the exhaust system of a host.
4. The exhaust temperature of the main engine generally reaches 420-650 ℃, and after the seawater film or water mist sprayed out of the inner wall of the exhaust baffle valve is fully cooled, the exhaust temperature of the side outlet is reduced to be below 60 ℃, so that the heat transferred to the ship body is effectively reduced, the infrared radiation characteristic of the side exhaust port is reduced, and the infrared stealth performance of the ship is improved.
5. The exhaust system can effectively reduce the exhaust noise of the main engine.
6. A compact in-space ship side exhaust system arrangement is provided as well as various designs for preventing seawater from entering the host.
Drawings
FIG. 1 is a lateral view of a broadside exhaust system;
FIG. 2 is a partial longitudinal view of the broadside exhaust system;
FIG. 3 is a view of the exhaust flapper valve structure;
FIG. 4 is a block diagram of the side cowl;
reference numerals: 1. a reducer pipe at the outlet of the host machine; 2. an omega-shaped exhaust expansion joint; 3. an exhaust elbow; 4. a platoon square silencer; 5. an exhaust elbow; 6. an exhaust flapper valve; 7. a broadside nozzle; 8. a broadside deflector cap; 9. a water discharge device; 10. a thermal insulation layer; 11. a discharge port; 12. a cooling water cavity; 13. a small circular hole on the inner wall; 14. a seawater inlet; 15. an exhaust baffle; 16. an operating device; 17. a hull outer plate;
in the figure, c.l. represents the hull centerline; b.l. represents baseline.
Detailed Description
In order to make the technical means, the creation features, the achievement objects and the advantages of the invention comprehensible, the following embodiments with reference to fig. 1 to 4 further describe the technical solutions provided by the invention, as follows.
Referring to fig. 1 and 2, the present example discloses a compact side exhaust system for a boat, which comprises, in order from an exhaust outlet of a main engine: the marine engine comprises a main engine outlet reducer pipe 1, an omega-shaped exhaust expansion joint 2, an exhaust bent pipe 3, a side exhaust square silencer 4, an exhaust bent pipe 5, an exhaust baffle valve 6, a side connecting pipe 7 and a side guide cap 8, and further comprises a water discharger 9 for connecting the side exhaust square silencer 4 and the exhaust baffle valve 6, wherein a heat insulation layer is arranged inside the side exhaust square silencer 4, the heat insulation layer 10 is laid outside an exhaust pipeline and pipeline accessories, and an exhaust system is fixed on a hull structure through an elastic framework.
The omega-shaped exhaust expansion joint 2 is different from the traditional circular corrugated pipe, the internal part of the omega-shaped exhaust expansion joint is provided with a plurality of omega-shaped corrugated pipe groups which have smaller axial and radial rigidity and large flexibility, the omega-shaped exhaust expansion joint has better compensation capability of axial, radial and angle deflection in a shorter length size, and the omega-shaped exhaust expansion joint can furthest absorb the vibration displacement and the expansion and contraction deformation of a host exhaust port and an exhaust system in a limited space. The exhaust elbow 3 and the exhaust elbow 5 properly adjust the bending angle and the direction during lofting according to the position of the connecting pipe accessory.
The shape and the internal silencing structure of the side exhaust square silencer 4 are different from those of a traditional cylindrical silencer with two ends going in and out, the height size is small, and the heat insulation layer is arranged in the silencer body; the inlet of the square sound damper 4 of the side row is positioned on the upper side of the front end face, the outlet is positioned at the position close to the rear end face at the bottom, the height difference exists between the inlet and the outlet, the outlet is favorable for timely backflow discharge of the flushed seawater at the bottom, and the double dislocation of the inlet and the outlet in the height and direction greatly reduces the risk that the seawater enters the main engine after rushing into the square sound damper 4 of the side row when in heavy storms or rolling at a large inclination angle; the square muffler 4 for the side exhaust adopts a two-in one-out mode, the diameter of the air inlet pipe is small, the layout of the exhaust elbow 3 is facilitated, and the height difference between an inlet and an outlet is increased and the height size of the square muffler 4 for the side exhaust is reduced; the bottom of the square shipboard discharge silencer 4 is provided with a discharge port 11 which is connected with a water discharger 9 through a pipeline, so that the accumulated water in the square shipboard discharge silencer 4 is automatically discharged and sealed by water to prohibit the discharge of exhaust gas from a discharge pipe; the top of the side row square silencer 4 is provided with a hoisting support which can be elastically arranged on a hull structure, so that the vibration of the exhaust system is reduced to be transmitted to an upper deck and the expansion caused by heat and contraction caused by cold of the exhaust system are compensated; the exhaust resistance of the side exhaust square silencer 4 is less than or equal to 1000Pa, the exhaust noise insertion loss is more than or equal to 25dBA, and the surface temperature is less than or equal to 60 ℃.
Referring to fig. 3, the exhaust flapper valve 6 has a cooling water cavity 12 therein, the diameter of the inner wall is the same as that of the exhaust elbow 5, the diameter of the outer wall is the same as that of the side port pipe 7, and the inner wall is provided with a certain number of small inclined circular holes 13 in the circumferential direction. The outer wall of the exhaust baffle valve 6 is provided with a water inlet 14 for cooling seawater, the cooling seawater pumped in from the outside needs to have enough pressure and flow, the seawater sprayed out from the small round holes on the inner wall is ensured to form a water film or water mist so as to be beneficial to fully contacting with high-temperature exhaust to absorb heat, the exhaust volume is obviously shrunk due to sudden drop of exhaust temperature, and then larger pressure drop is formed, and the exhaust is more beneficial to the exhaust to the side. The exhaust baffle valve 6 is internally provided with an exhaust baffle 15, an exhaust channel can be opened or closed through an exhaust baffle operating device 16, and an opening or closing switching value signal is output outwards to serve as an interlocking signal for starting a host.
Referring to fig. 4, the front part of the side connection pipe 7 extends out of the hull outer plate 17, the rear part slightly extends out of the hull to facilitate welding, and the side diversion cap 8 passing through three-dimensional lofting is a conical diversion plate with a certain arc and surrounds the front part of the side exhaust port in the direction of 150 degrees. When the boat sails at high speed, the side board can be guided to flow or the side surge can be guided to flow to divide water so as to avoid interfering with the exhaust airflow at the side outlet, and meanwhile, the side guide cap 8 is not required to stretch into the exhaust outlet too much so as to avoid reducing the area of the exhaust port and influencing the exhaust airflow at the side outlet.
Referring to fig. 1 and 2, the side vent outlet is at a height H above the waterline that ensures that the vent is not flooded with seawater during normal sailing and rolling of the boat, and that the side vent is not flooded with seawater all the time during one-half of the rolling cycle to avoid host seaching even during heavy storms or large-angle rolling.
While the invention has been described with reference to a preferred embodiment, it will be understood by those skilled in the art that various changes in form and detail may be made therein without departing from the spirit and scope of the invention.
Claims (10)
1. A compact boat board side exhaust system is characterized by comprising the following components in sequence from a main engine exhaust outlet to the outside: the engine comprises a main engine outlet reducer pipe (1), an omega-shaped exhaust expansion joint (2), an exhaust bent pipe (3), a side exhaust square silencer (4), an exhaust bent pipe (5), an exhaust baffle valve (6), a side connecting pipe (7) and a side guide cap (8); the exhaust system is characterized by further comprising a water drainage device (9) connected with the side exhaust square silencer (4) and the exhaust baffle valve (6), a heat insulation layer is arranged inside the side exhaust square silencer (4), the heat insulation layer (10) is laid outside the exhaust pipeline and pipeline accessories, and the exhaust system is fixed on the ship body structure through the elastic hanging bracket.
2. The compact boat side exhaust system of claim 1, wherein: the heat insulation layer of the side row square silencer (4) is arranged in the silencer body, and the surface temperature is less than or equal to 60 ℃; the two inlets of the side exhaust square silencer (4) are positioned on the upper side of the front end face, the outlet is positioned at the position close to the rear end face at the bottom, the inlet is connected with the self-exhaust bent pipe (3), the outlet is connected with the exhaust bent pipe (5), and the inlet and the outlet have a height difference.
3. The compact boat side exhaust system of claim 2, wherein: the bottom of the side exhaust square silencer (4) is provided with a discharge port (11) which is connected with a water discharger (9) through a pipeline.
4. A compact boat side exhaust system according to claim 3, wherein: and the top of the square ship side row silencer (4) is provided with a hoisting support which is elastically connected with the ship body structure.
5. The compact boat side exhaust system of claim 1, wherein: the inlet of the exhaust baffle valve (6) is connected with the exhaust elbow pipe (5), and the outlet is connected with the side connecting pipe (7); a cooling water cavity (12) is arranged in the exhaust baffle valve (6), the diameter of the inner wall of the exhaust baffle valve is the same as that of the exhaust elbow (5), the diameter of the outer wall of the exhaust baffle valve is the same as that of the side connection pipe (7), a water inlet (14) for cooling seawater is arranged on the outer wall of the exhaust baffle valve, and a certain number of small circular holes (13) are formed in the circumferential direction of the inner wall of the exhaust baffle; the exhaust baffle valve (6) injects seawater pumped from the outside into the cooling water cavity (12), and sprays water film or water mist along the exhaust direction through the small round holes in the circumferential direction of the inner wall so as to reduce the exhaust temperature.
6. The compact boat side exhaust system of claim 5, wherein: the exhaust baffle valve (6) is internally provided with an exhaust baffle (15) and an exhaust baffle operating device (16), and the exhaust baffle operating device (16) controls the opening or closing of an exhaust channel.
7. The compact boat side exhaust system of claim 6, wherein: the exhaust baffle operating device (16) outputs an opening and closing amount signal for opening or closing the exhaust baffle (15) to the outside.
8. The compact boat side exhaust system of claim 1, wherein: the front part of the side connecting pipe (7) extends out of a ship outer plate (17) to be used as a side exhaust port, and the rear part of the side connecting pipe is welded with a ship body.
9. The compact boat side exhaust system of claim 8, wherein: the side diversion cap (8) is a half-cone diversion structure imitating the linearity of a ship body and surrounds the front part of the side connection pipe (7) in the direction of 150 degrees.
10. The compact boat side exhaust system of claim 1, wherein: the exhaust system surface temperature and the side outlet exhaust temperature are both less than 60 ℃.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010742591.5A CN111734518A (en) | 2020-07-29 | 2020-07-29 | Compact boat board side exhaust system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010742591.5A CN111734518A (en) | 2020-07-29 | 2020-07-29 | Compact boat board side exhaust system |
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| Publication Number | Publication Date |
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| CN111734518A true CN111734518A (en) | 2020-10-02 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
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| CN202010742591.5A Pending CN111734518A (en) | 2020-07-29 | 2020-07-29 | Compact boat board side exhaust system |
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| CN (1) | CN111734518A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112722228A (en) * | 2021-02-24 | 2021-04-30 | 广州船舶及海洋工程设计研究院（中国船舶工业集团公司第六0五研究院） | Underwater smoke exhaust pipe structure of ship |
| CN112855325A (en) * | 2021-02-24 | 2021-05-28 | 广州船舶及海洋工程设计研究院（中国船舶工业集团公司第六0五研究院） | Ship exhaust device |
| CN114233454A (en) * | 2021-12-27 | 2022-03-25 | 江龙船艇科技股份有限公司 | Two-way exhaust water conservancy diversion structure of boats and ships |
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| CN109026291A (en) * | 2018-08-14 | 2018-12-18 | 澳龙船艇科技有限公司 | Aluminium boat steam-water separation formula exhaust system |
| CN209067330U (en) * | 2018-09-30 | 2019-07-05 | 中船黄埔文冲船舶有限公司 | A kind of underwater exhaust device |
| CN110259558A (en) * | 2019-06-28 | 2019-09-20 | 中船黄埔文冲船舶有限公司 | A kind of boat diesel engine gas exhaust piping rainwater collecting and treating system |
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| US20130283768A1 (en) * | 2012-04-26 | 2013-10-31 | Ccts Technology Group, Inc. | Clean exhaust system and method for diesel engines of marine vessels |
| CN203476452U (en) * | 2013-09-12 | 2014-03-12 | 武汉理工大学 | Underwater exhaust system based on seawater desulfurization |
| CN108678848A (en) * | 2018-05-07 | 2018-10-19 | 招商局重工(深圳)有限公司 | A kind of exhaust system and its wet type exhaust apparatus of ship |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112722228A (en) * | 2021-02-24 | 2021-04-30 | 广州船舶及海洋工程设计研究院（中国船舶工业集团公司第六0五研究院） | Underwater smoke exhaust pipe structure of ship |
| CN112855325A (en) * | 2021-02-24 | 2021-05-28 | 广州船舶及海洋工程设计研究院（中国船舶工业集团公司第六0五研究院） | Ship exhaust device |
| CN114233454A (en) * | 2021-12-27 | 2022-03-25 | 江龙船艇科技股份有限公司 | Two-way exhaust water conservancy diversion structure of boats and ships |
| CN114233454B (en) * | 2021-12-27 | 2024-02-02 | 江龙船艇科技股份有限公司 | Ship bidirectional exhaust diversion structure |
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Application publication date: 20201002 |