CN114056485A - Side opening ice melting pipeline and ice melting method - Google Patents
Side opening ice melting pipeline and ice melting method Download PDFInfo
- Publication number
- CN114056485A CN114056485A CN202111387003.1A CN202111387003A CN114056485A CN 114056485 A CN114056485 A CN 114056485A CN 202111387003 A CN202111387003 A CN 202111387003A CN 114056485 A CN114056485 A CN 114056485A
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- sewage discharge
- deck
- outlet
- marine boiler
- pipe
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- 238000002844 melting Methods 0.000 title claims abstract description 38
- 230000008018 melting Effects 0.000 title claims abstract description 35
- 238000000034 method Methods 0.000 title claims abstract description 15
- 239000010865 sewage Substances 0.000 claims abstract description 97
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 39
- 239000013535 sea water Substances 0.000 claims abstract description 38
- 239000002351 wastewater Substances 0.000 claims abstract description 17
- 238000007599 discharging Methods 0.000 claims description 3
- 238000009415 formwork Methods 0.000 claims description 2
- 230000008014 freezing Effects 0.000 claims 2
- 238000007710 freezing Methods 0.000 claims 2
- 230000000694 effects Effects 0.000 abstract description 3
- 229910000831 Steel Inorganic materials 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
- B63B—SHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING
- B63B13/00—Conduits for emptying or ballasting; Self-bailing equipment; Scuppers
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
- B63B—SHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING
- B63B13/00—Conduits for emptying or ballasting; Self-bailing equipment; Scuppers
- B63B13/02—Ports for passing water through vessels' sides
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- Ocean & Marine Engineering (AREA)
- Physical Water Treatments (AREA)
Abstract
The invention discloses a side opening ice melting pipeline and an ice melting method, wherein the laying path of an upper drain pipe and a lower drain pipe on a marine boiler is changed, the side outlet end of the upper drain pipe is arranged at one side of a deck water falling side outlet, the side outlet end of the lower drain pipe is arranged at one side of a seawater outlet, and the ice of the deck water falling side outlet and the seawater outlet is dissolved by using high-temperature wastewater in the marine boiler, so that the ice of the marine side outlet can be prevented, the problem of the ice of the deck water falling port or the seawater outlet is effectively solved, the heat energy of the wastewater in the marine boiler can be fully utilized, the energy-saving effect is achieved, the sewage in the marine boiler can be smoothly discharged out of a ship, and the water quality in the boiler is kept.
Description
Technical Field
The invention relates to the technical field of ship construction, in particular to a shipboard opening ice melting pipeline and an ice melting method.
Background
When the LNG ship in the ice area travels in the ice area, floating ice exists on the ship side, the temperature outside the ship is low, and the side pipe is usually below a water line at the opening position of the ship. When a ship is parked, ice is easy to freeze near the outboard discharge port of the ship board, ice melting measures are needed for the ship, the strength of a branch pipe can be affected if the branch pipe is directly opened on the ship internal side pipe, and the side short pipe is required to be as short as possible by a classification society, so that the scheme that the side short pipe is directly connected with the steam branch pipe is not suitable.
Therefore, how to design the ice melting method of the side opening becomes a problem to be solved urgently.
Disclosure of Invention
In view of the above, the present invention provides a side opening ice melting pipeline and an ice melting method, which are used to solve the problems in the background art.
A side opening ice melting pipeline comprises an upper drainage pipe arranged at an upper drainage port of a marine boiler and used for melting ice at a side drainage port of a deck falling water by using high-temperature wastewater in the marine boiler, and a lower drainage pipe arranged at a lower drainage port of the marine boiler and used for melting ice at a seawater drainage port by using the high-temperature wastewater in the marine boiler,
the water inlet end of the upper sewage discharge pipe is connected with an upper sewage discharge valve at an upper sewage discharge port of the marine boiler, the board side outlet end of the upper sewage discharge pipe is arranged on one side of a deck water falling board side outlet, and the board side outlet end of the upper sewage discharge pipe is provided with the upper sewage discharge board side valve;
the inlet end of the lower sewage discharge pipe is connected with a lower sewage discharge valve at a lower sewage discharge port of the marine boiler, the side outlet end of the lower sewage discharge pipe is arranged at one side of the seawater discharge port, and the side outlet end of the lower sewage discharge pipe is provided with a lower sewage discharge side valve.
Preferably, the upper drainage pipe is laid from an upper drainage port of the marine boiler to an upper deck upwards, then laid along the bottom of the upper deck towards the ship board side direction, and then sequentially penetrates through the second deck and the third deck downwards from the ship board side until reaching one side of a deck water falling board side discharge port;
the lower sewage discharge pipe passes through the two decks from the lower sewage discharge port of the marine boiler downwards, then is laid along the bottom of the two decks towards the side of the ship body, and then passes through the three decks or the three decks and the four formworks downwards from the side of the ship body until reaching one side of the seawater discharge port.
Preferably, the side outlet end of the upper sewer is arranged above or below the deck downpipe side outlet or on a side close to the bow or on a side close to the stern;
the side outlet end of the lower sewage discharge pipe is arranged above or below the seawater discharge port or close to one side of the bow or one side of the stern.
Preferably, the upper and lower sewage side valves are normally open valves.
Preferably, the marine boiler is disposed at a position above the deck in the middle of the nacelle.
Preferably, the marine boiler is arranged within a nacelle.
A broadside opening ice melting method specifically comprises the following steps:
s1, laying an upper drainage pipe and a lower drainage pipe of the marine boiler,
the upper sewage discharge pipe is laid upwards to an upper deck from an upper sewage discharge port of the marine boiler, then laid along the bottom of the upper deck towards the ship board side direction, and then sequentially penetrates through the second deck and the third deck downwards from the ship board side until reaching one side of a deck water falling board side discharge port;
the lower sewage discharge pipe passes through the second deck downwards from a lower sewage discharge port of the marine boiler, then is laid along the bottom of the second deck towards the ship board side direction, and then passes through the third deck or the third deck and the four-way plate downwards from the ship board side until reaching one side of a seawater discharge port;
s2, when ice melting needs to be carried out on the deck downpipe topside outlet and the seawater outlet in the ship sailing process, opening an upper sewage discharge topside valve on an upper sewage discharge pipe and a lower sewage discharge topside valve on a lower sewage discharge pipe, and discharging high-temperature wastewater in the marine boiler to one side of the deck downpipe topside outlet and the seawater outlet along the upper sewage discharge pipe and the lower sewage discharge pipe respectively to dissolve ice at the deck downpipe topside outlet and the seawater outlet;
and S3, after the ice melting is finished, closing the upper sewage discharge side valve on the upper sewage discharge pipe and the lower sewage discharge side valve on the lower sewage discharge pipe.
The invention has the beneficial effects that:
1. the invention changes the laying path of the original upper sewage discharge pipe and the lower sewage discharge pipe on the marine boiler, arranges the broadside outlet end of the upper sewage discharge pipe at one side of the deck water falling broadside outlet, arranges the broadside outlet end of the lower sewage discharge pipe at one side of the seawater outlet, and utilizes the high-temperature wastewater in the marine boiler to dissolve the ice of the deck water falling broadside outlet and the seawater outlet, thereby not only preventing the ship broadside outlet from icing and effectively solving the problem of icing of the deck water falling outlet or the seawater outlet, but also fully utilizing the heat energy of the wastewater in the marine boiler, playing the role of energy saving, smoothly discharging the sewage in the marine boiler out of the ship and keeping the water quality in the boiler.
2. The marine boiler has the advantages that the laying path of the upper drainage pipe and the lower drainage pipe on the marine boiler is short, the heat loss in the waste water conveying process is effectively reduced, and the utilization rate of waste water heat is improved.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings needed to be used in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.
FIG. 1 is a layout view of a broadside opening ice-melting pipeline.
The reference numerals in the figures have the meaning:
the marine boiler 1 is a marine boiler, 2 is an upper sewage discharge valve, 3 is an upper sewage discharge side valve, 4 is a lower sewage discharge valve, 5 is a lower sewage discharge side valve, 6 is a deck water falling side discharge port, 7 is a seawater pump, 8 is a cooler, 9 is a seawater discharge port, 10 is an upper sewage discharge pipe, 11 is a lower sewage discharge pipe, and 12 is a cabin area.
Detailed Description
In order that the objects, aspects and advantages of the invention will become more apparent, the invention will be described by way of example only, and in connection with the accompanying drawings. It is to be understood that such description is merely illustrative and not intended to limit the scope of the present invention. Moreover, in the following description, descriptions of well-known structures and techniques are omitted so as to not unnecessarily obscure the concepts of the present invention.
The terminology used in the present disclosure is for the purpose of describing particular embodiments only and is not intended to be limiting of the disclosure. As used in this disclosure and the appended claims, the singular forms "a," "an," and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. It should also be understood that the term "and/or" as used herein refers to and encompasses any and all possible combinations of one or more of the associated listed items.
For better understanding of the technical solutions of the present invention, the following detailed description of the present invention is provided with reference to the accompanying drawings.
The invention provides a side opening ice melting pipeline and an ice melting method, wherein the laying path of an original upper drain pipe 10 and an original lower drain pipe 11 on a marine boiler is changed, the side outlet end of the upper drain pipe 10 is arranged at one side of a deck water falling side outlet 6, the side outlet end of the lower drain pipe 11 is arranged at one side of a seawater outlet 9, and high-temperature waste water in the marine boiler 1 is used for dissolving ice at the deck water falling side outlet 6 and the seawater outlet 9, so that the ice at the deck water falling side outlet 6 and the seawater outlet 9 can be prevented, the problem of ice at the deck water falling port or the seawater outlet can be effectively solved, the heat energy of waste water in the marine boiler 1 can be fully utilized, the energy-saving effect can be achieved, the sewage in the marine boiler 1 can be smoothly discharged out of a ship, and the water quality in the boiler can be kept.
The side opening ice melting pipeline comprises an upper drainage pipe 10 arranged at an upper drainage outlet of a marine boiler 1 and used for melting ice on a deck water falling side drainage outlet 6 by using high-temperature wastewater in the marine boiler 1, and a lower drainage pipe 11 arranged at a lower drainage outlet of the marine boiler 1 and used for melting ice on a seawater drainage outlet 9 by using the high-temperature wastewater in the marine boiler 1.
In the present embodiment, the marine boiler 1 is disposed in the middle of the nacelle at a position above the deck, or in the canopy.
The water inlet end of the upper sewage discharge pipe 10 is connected with an upper sewage discharge valve 2 at a sewage discharge port on the marine boiler 1, the side outlet end of the upper sewage discharge pipe 10 is arranged on one side of a deck water falling side outlet 6, and an upper sewage discharge side valve 3 is installed at the side outlet end of the upper sewage discharge pipe 10. In this embodiment, the upper drain side valve 3 and the lower drain side valve 5 are normally open valves.
When the upper drain pipe 10 is laid, the upper drain pipe 10 is laid upward from the upper drain port of the marine boiler 1 to the upper deck, then laid in the ship side direction along the bottom of the upper deck, and then sequentially passed through the second deck and the third deck downward from the ship side until reaching the side of the deck water falling side discharge port. Specifically, the side outlet end of the upper drain pipe 10 may be arranged above or below the deck down-board side outlet 6 or on the side near the bow or on the side near the stern.
The inlet end of the lower sewage discharge pipe 11 is connected with a lower sewage discharge valve 4 at a lower sewage discharge port of the marine boiler 1, the side outlet end of the lower sewage discharge pipe 11 is arranged at one side of a seawater discharge port 9, and a lower sewage discharge side valve 5 is installed at the side outlet end of the lower sewage discharge pipe 11.
When the lower sewage discharge pipe 11 is laid, the lower sewage discharge pipe 11 passes through the two decks from the lower sewage discharge port of the marine boiler 1 downward, then is laid along the bottom of the two decks in the ship board side direction, and then passes through the three decks, or the three decks and the four pallets downward from the ship board side until reaching one side of the seawater discharge port 9. Specifically, the side outlet end of the lower sewage pipe 11 is arranged above or below the seawater outlet port 9 or on the side near the bow or on the side near the stern.
The invention also provides a shipboard opening ice melting method, which specifically comprises the following steps:
s1, the upper and lower sewage pipes 10 and 11 of the marine boiler 1 are installed.
The upper sewage discharge pipe 10 is laid from an upper sewage discharge port of the marine boiler 1 upward to an upper deck, then laid along the bottom of the upper deck in the ship board side direction, and then sequentially passed through the second deck and the third deck from the ship board side downward until reaching one side of a deck water falling board side discharge port 6.
The lower sewage discharge pipe 11 passes through the two decks from the lower sewage discharge port of the marine boiler 1 downward, then is laid along the bottom of the two decks in the ship board side direction, and then passes through the three decks, or the three decks and the four platens downward from the ship board side until reaching one side of the seawater discharge port 9.
S2, when ice needs to be melted on the deck downslope side outlet 6 and the seawater outlet 9 during the ship sailing process (or when the ship boiler is maintained), the upper blowdown side valve 3 on the upper blowdown pipe 10 and the lower blowdown side valve 5 on the lower blowdown pipe 11 are opened, and the high-temperature wastewater in the ship boiler 1 is discharged to the deck downslope side outlet 6 and the seawater outlet 9 side along the upper blowdown pipe 10 and the lower blowdown pipe 11, respectively, to dissolve the ice formed at the deck downslope side outlet 6 and the seawater outlet 9.
And S3, closing the upper drainage side valve 3 on the upper drainage pipe 10 and the lower drainage side valve 5 on the lower drainage pipe after the ice melting is finished.
Assuming that the water pressure in the marine boiler is 0.7Mpa, the pipe radius of the boiler blow-off pipe is 21mm, the flow rate of the boiler blow-off water is v m/s, and the density rho of the water in the boiler is 1 × 103Kg/m3The specific heat capacity c of water is 4.2X 103J/(Kg. DEG C), the mass m of water flowing through the boiler in unit time in the sewage pipe is pi r2Per 1000/1000 rho.v (Kg), the insulating conductivity factor lambda of the sewage pipe is 1W/(m)2DEG C.), the temperature (corresponding to the pressure of 0.7 Mpa) T of the boiler blow-off water0165 ℃ and the temperature T of the insulating surface of the blow-off pipe160 ℃ and the outlet temperature T of boiler blow-off water2，
The heat Q1 conducted to the outside through the steel pipe insulation in the boiler blow-off pipe per unit time is 2 pi r/1000 xv x (T)0-T1) (J) sheetThe heat Q2 (T) emitted by the boiler grate sewage in the time is cm0-T2) The heat Q2 dissipated by the boiler grate sewage in unit time is equal to the heat Q1 conducted to the outside, namely Q1 is equal to Q2.
T can be calculated by the formula2162 ℃. Therefore, the ice at the side outlet of the deck falling water board and the seawater outlet can be dissolved smoothly by using 162 ℃ water, and a good ice melting effect is achieved.
It should be understood that the described embodiments are only some embodiments of the invention, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Claims (7)
1. A side opening ice melting pipeline is characterized by comprising an upper drainage pipe arranged at an upper drainage port of a marine boiler and used for melting deck water falling into a ship and freezing a side drainage port by using high-temperature wastewater in the marine boiler, and a lower drainage pipe arranged at a lower drainage port of the marine boiler and used for melting seawater by using the high-temperature wastewater in the marine boiler and freezing the seawater drainage port,
the water inlet end of the upper sewage discharge pipe is connected with an upper sewage discharge valve at an upper sewage discharge port of the marine boiler, the board side outlet end of the upper sewage discharge pipe is arranged on one side of a deck water falling board side outlet, and the board side outlet end of the upper sewage discharge pipe is provided with the upper sewage discharge board side valve;
the inlet end of the lower sewage discharge pipe is connected with a lower sewage discharge valve at a lower sewage discharge port of the marine boiler, the side outlet end of the lower sewage discharge pipe is arranged at one side of the seawater discharge port, and the side outlet end of the lower sewage discharge pipe is provided with a lower sewage discharge side valve.
2. The broadside-opening ice melting pipeline according to claim 1, wherein the upper drain pipe is laid from an upper drain port of a marine boiler to an upper deck, then laid along the bottom of the upper deck in the broadside direction of the ship body, and then sequentially passed through a second deck and a third deck from the broadside of the ship body downwards until reaching one side of a deck water falling broadside outlet;
the lower sewage discharge pipe passes through the two decks from the lower sewage discharge port of the marine boiler downwards, then is laid along the bottom of the two decks towards the side of the ship body, and then passes through the three decks or the three decks and the four formworks downwards from the side of the ship body until reaching one side of the seawater discharge port.
3. The broadside-opening ice-melting pipeline of claim 1 or 2, wherein the broadside outlet end of the upper drain pipe is arranged above or below the deck downboard side outlet or on a side close to the bow or on a side close to the stern;
the side outlet end of the lower sewage discharge pipe is arranged above or below the seawater discharge port or close to one side of the bow or one side of the stern.
4. The side-opening ice melting pipeline of claim 1, wherein the upper and lower blowdown side valves are normally open valves.
5. The side-opening ice melting pipeline according to claim 1, wherein the marine boiler is arranged in the middle of the nacelle above the deck.
6. The broadside-opening ice-melting pipeline of claim 1, wherein the marine boiler is disposed within an engine compartment canopy.
7. A broadside opening ice melting method is characterized by comprising the following steps:
s1, laying an upper drainage pipe and a lower drainage pipe of the marine boiler,
the upper sewage discharge pipe is laid upwards to an upper deck from an upper sewage discharge port of the marine boiler, then laid along the bottom of the upper deck towards the ship board side direction, and then sequentially penetrates through the second deck and the third deck downwards from the ship board side until reaching one side of a deck water falling board side discharge port;
the lower sewage discharge pipe passes through the second deck downwards from a lower sewage discharge port of the marine boiler, then is laid along the bottom of the second deck towards the ship board side direction, and then passes through the third deck or the third deck and the four-way plate downwards from the ship board side until reaching one side of a seawater discharge port;
s2, when ice melting needs to be carried out on the deck downpipe topside outlet and the seawater outlet in the ship sailing process, opening an upper sewage discharge topside valve on an upper sewage discharge pipe and a lower sewage discharge topside valve on a lower sewage discharge pipe, and discharging high-temperature wastewater in the marine boiler to one side of the deck downpipe topside outlet and the seawater outlet along the upper sewage discharge pipe and the lower sewage discharge pipe respectively to dissolve ice at the deck downpipe topside outlet and the seawater outlet;
and S3, after the ice melting is finished, closing the upper sewage discharge side valve on the upper sewage discharge pipe and the lower sewage discharge side valve on the lower sewage discharge pipe.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111387003.1A CN114056485A (en) | 2021-11-22 | 2021-11-22 | Side opening ice melting pipeline and ice melting method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111387003.1A CN114056485A (en) | 2021-11-22 | 2021-11-22 | Side opening ice melting pipeline and ice melting method |
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| Publication Number | Publication Date |
|---|---|
| CN114056485A true CN114056485A (en) | 2022-02-18 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202111387003.1A Pending CN114056485A (en) | 2021-11-22 | 2021-11-22 | Side opening ice melting pipeline and ice melting method |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201553281U (en) * | 2009-10-29 | 2010-08-18 | 上海京荣船舶设计有限公司 | Device capable of preventing ship seawater box from icy blockage |
| KR101632184B1 (en) * | 2015-11-26 | 2016-06-21 | 사단법인 한국선급 | A colling system for a ship |
| CN106184619A (en) * | 2016-08-27 | 2016-12-07 | 南通中远川崎船舶工程有限公司 | A kind of Sea Chest device being applicable to arctic navigation boats and ships |
| KR20180076941A (en) * | 2016-12-28 | 2018-07-06 | 대우조선해양 주식회사 | Ice crushing apparatus and method by steam injection of ice crushing lng carrier |
| CN111498005A (en) * | 2020-04-17 | 2020-08-07 | 中船黄埔文冲船舶有限公司 | Ship deck sewage discharge system |
-
2021
- 2021-11-22 CN CN202111387003.1A patent/CN114056485A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201553281U (en) * | 2009-10-29 | 2010-08-18 | 上海京荣船舶设计有限公司 | Device capable of preventing ship seawater box from icy blockage |
| KR101632184B1 (en) * | 2015-11-26 | 2016-06-21 | 사단법인 한국선급 | A colling system for a ship |
| CN106184619A (en) * | 2016-08-27 | 2016-12-07 | 南通中远川崎船舶工程有限公司 | A kind of Sea Chest device being applicable to arctic navigation boats and ships |
| KR20180076941A (en) * | 2016-12-28 | 2018-07-06 | 대우조선해양 주식회사 | Ice crushing apparatus and method by steam injection of ice crushing lng carrier |
| CN111498005A (en) * | 2020-04-17 | 2020-08-07 | 中船黄埔文冲船舶有限公司 | Ship deck sewage discharge system |
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