CN201439725U - Exhaust pipe shield of marine diesel engine - Google Patents
Exhaust pipe shield of marine diesel engine Download PDFInfo
- Publication number
- CN201439725U CN201439725U CN2009201411528U CN200920141152U CN201439725U CN 201439725 U CN201439725 U CN 201439725U CN 2009201411528 U CN2009201411528 U CN 2009201411528U CN 200920141152 U CN200920141152 U CN 200920141152U CN 201439725 U CN201439725 U CN 201439725U
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- CN
- China
- Prior art keywords
- exhaust pipe
- cooling water
- diesel engine
- pipe shield
- water
- Prior art date
- 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.)
- Expired - Fee Related
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Abstract
The utility model discloses a water-cooling exhaust pipe shield of a marine diesel engine. A flow passage is arranged on a water-cooling exhaust pipe shield body; the two ends of the flow passage are respectively provided with a water inlet and a water outlet that are communicated with a cooling water passage; the water inlet and the water outlet are communicated with the cooling water passage; the exhaust pipe shield body is arranged at the outer surface of an exhaust pipe; and the exhaust pipe shield is tightly fixed with the exhaust pipe by a bolt. The water-cooling exhaust pipe shield has the advantages that no power consumption is caused for the diesel engine; the manufacturing technique is simple; the dissipation of the exhaust heat energy can be greatly reduced, so as to reduce the emission; and the environmental pollution is controlled.
Description
Technical field
The utility model belongs to the marine engine technical field, particularly a kind of discharge duct of marine diesel engine cover.
Background technique
When marine engine and vehicular engine working environment are inequality, cabin is sluggish in air circulation during marine engine work, temperature height in the cabin, the high-temp waste gas that outlet pipe is discharged raises the outlet pipe surface temperature, working properly and safety for motor, prevent that simultaneously thermal radiation infringement other component of motor and high temperature from may cause the injury to human body, following method commonly used is carried out heat insulation processing to outlet pipe:
1, outside the cast iron type outlet pipe, increases thermal-protective material, as ceramic mud, asbestos etc., by thermal-protective material outlet pipe is separated, reach heat insulation processing to the outlet pipe of high temperature, but don't work which kind of thermal-protective material, effect of heat insulation is all the time less than the heat insulation effect of water-cooled.
2, wrap the lapping of one deck special material at the outlet pipe skin, carry out thermal insulation protection, effect of heat insulation is better, can make the outlet pipe hull-skin temperature be lower than 100 ℃.Its shortcoming is: the lapping cost that uses is higher at present; Owing to adopt environmental sealing, the outlet pipe inside temperature is higher simultaneously, for guaranteeing the certain reliability of outlet pipe, just needs to adopt more expensive manufacture of materials outlet pipes such as silicon molybdenum alloy heat resisting cast iron.
3, marine engine uses traditional water-cooled exhaust gas pipe mostly at present.This outlet pipe adopts direct cooled exhaust pipe, the shortcoming of this method is: a large amount of marine engines adopt supercharging technology, do work with gas of combustion, increase power output, but using under this water-cooling exhaust pipe condition, if the unreasonable or cooled exhaust pipe of fetching water separately of water channel design, can cause water flow cross much or water temperature low excessively, cooling water is taken away most of waste-gas heat, engine exhaust temperature is significantly reduced, cause the working efficiency of pressurized machine to descend, thereby it is a lot of that engine thermal efficiency is descended.
Technical problem to be solved in the utility model is the defective that overcomes prior art, and a kind of good heat-insulation effect, cost is low, engine thermal efficiency is high discharge duct of marine diesel engine are provided.
Summary of the invention
The purpose of this utility model is to provide a kind of exhaust pipe shield body that comprises, be provided with cooling water channel around outlet pipe in the body, engine exhaust pipe does not expose, but exhaust pipe shield exposes, and cooling water passage is arranged in the body, the discharge duct of marine diesel engine cover that has intake-outlet to communicate, simple in structure, easy to manufacture, easy to install, good energy-conserving effect.
Technical solution of the present utility model is such, comprises the exhaust pipe shield body, is provided with the flowing water passage in described exhaust pipe shield body, it is characterized in that being provided with in the exhaust pipe shield body cooling water channel, cooling water intake, cooling water outlet.
The pipe thickness of cooling water passage is at 1-15mm.
The cooling water passage of exhaust pipe shield body and outlet pipe exhaust are not connected mutually, exhaust pipe shield outer wrapping insulating.
Advantage of the present utility model: 1, reduce distributing of exhausting heat energy significantly, reduce temperature in the cabin, improve people's working environment; 2, owing to the structural design advantages of simple, traditional relatively water-cooling exhaust pipe greatly reduces manufacturing process, makes simple; Reduce the thermal efficiency loss of motor to greatest extent, effectively improve the output power of marine diesel engine, reduce oil consumption.3, reduced discharging, pollution controls environment.
When engine operation, when the waste gas of discharge flows out by outlet pipe, whole outlet pipe is heated up rapidly; And the cooling water of motor sea water pump is from the cooling nozzle 1 of exhaust pipe shield, flow through from left to right, flow out by water outlet 3, outwards during distribute heat, the water-cooling exhaust pipe cover can be wrapped in this heat between outlet pipe outer surface and the water-cooling exhaust pipe cover on the outlet pipe surface.
Description of drawings
It is such that structure of the present utility model constitutes
Fig. 1 is the side view of the utility model discharge duct of marine diesel engine.
Fig. 2 is the plan view of the utility model discharge duct of marine diesel engine.
Fig. 3 is the left view of the utility model discharge duct of marine diesel engine.
Among Fig. 1-Fig. 2, cooling water intake (1), cooling water passage (2), cooling water outlet (3).
Embodiment
Below in conjunction with accompanying drawing embodiment is illustrated:
With reference to accompanying drawing 1-Fig. 2, comprise the exhaust pipe shield body, be provided with cooling water passage (2) around outlet pipe in body, there are cooling water intake (1), cooling water outlet (3) in cooling water passage (2) two ends, and cooling water passage (2) communicates with cooling water intake, water outlet.Cooling water enters from cooling water intake (1) and flows to cooling water passage (2) during diesel engine work, flows out from cooling water outlet.The about 1-15mm of cooling water passage (2) wall thickness.In the exhaust pipe shield body, be provided with cooling water channel (2).The exhaust pipe shield two ends are arranged with intake-outlet (1,3).Cooling water flows through from intake-outlet (1,3) during diesel engine work.The utility model exhaust pipe shield integral casting forming, internal layer are left a blank and are cooling water channel (2), and wall thickness is 5mm.The cooling water intake of motor sea water pump (1) flows out from cooling water outlet (3) by the cooling water channel (2) of this exhaust pipe shield again, thus the temperature on control exhaust pipe shield surface.Whole exhaust tube wall temperature can remain on below 80 ℃, and the almost free of losses of the diesel engine thermal efficiency is applicable to marine diesel engine fully simultaneously.The utility model exhaust pipe shield is easy for installation, only needs during use that this exhaust pipe shield is installed in the diesel exhaust gas tube outer surface and gets final product.
Be provided with cooling water channel around outlet pipe in the exhaust pipe shield body.Described exhaust pipe shield body is provided with a water outlet that is communicated with described cooling water channel, is provided with water intake on the outlet pipe body with respect to the other end of described water outlet, and described intake-outlet is communicated with described cooling water channel.Exhaust pipe shield flows through by cooling water and reaches cooling, and outlet pipe reaches the cooling purpose outside being wrapped in outlet pipe by exhaust pipe shield.Whole engine exhaust pipe does not expose after adopting present technique.What expose is exhaust pipe shield, and surface temperature is no more than 80 ℃.The pipe thickness of described cooling water channel is 5mm.
Claims (3)
1. a discharge duct of marine diesel engine cover comprises the exhaust pipe shield body, is provided with the flowing water passage in described exhaust pipe shield body, it is characterized in that being provided with in the exhaust pipe shield body cooling water channel (2), cooling water intake (1), cooling water outlet (3).
2. discharge duct of marine diesel engine cover according to claim 1, the pipe thickness that it is characterized in that cooling water passage is at 1-15mm.
3. discharge duct of marine diesel engine cover according to claim 1 is characterized in that the cooling water passage of exhaust pipe shield body and outlet pipe exhaust are not connected mutually, exhaust pipe shield outer wrapping insulating.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009201411528U CN201439725U (en) | 2009-07-31 | 2009-07-31 | Exhaust pipe shield of marine diesel engine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009201411528U CN201439725U (en) | 2009-07-31 | 2009-07-31 | Exhaust pipe shield of marine diesel engine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201439725U true CN201439725U (en) | 2010-04-21 |
Family
ID=42544396
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009201411528U Expired - Fee Related CN201439725U (en) | 2009-07-31 | 2009-07-31 | Exhaust pipe shield of marine diesel engine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201439725U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104234811A (en) * | 2014-06-26 | 2014-12-24 | 广西玉林盈龙橡塑科技有限公司 | Engine exhaust pipe heat shield |
| CN110259548A (en) * | 2019-07-11 | 2019-09-20 | 河南柴油机重工有限责任公司 | A kind of Diesel Engine Exhaust Pipe modular combination water cooling shield |
-
2009
- 2009-07-31 CN CN2009201411528U patent/CN201439725U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104234811A (en) * | 2014-06-26 | 2014-12-24 | 广西玉林盈龙橡塑科技有限公司 | Engine exhaust pipe heat shield |
| CN110259548A (en) * | 2019-07-11 | 2019-09-20 | 河南柴油机重工有限责任公司 | A kind of Diesel Engine Exhaust Pipe modular combination water cooling shield |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20100421 Termination date: 20150731 |
|
| EXPY | Termination of patent right or utility model |