CN113955011B - Ice melting pipeline and method for water outlet of LNG ship deck in ice region - Google Patents
Ice melting pipeline and method for water outlet of LNG ship deck in ice region Download PDFInfo
- Publication number
- CN113955011B CN113955011B CN202111389061.8A CN202111389061A CN113955011B CN 113955011 B CN113955011 B CN 113955011B CN 202111389061 A CN202111389061 A CN 202111389061A CN 113955011 B CN113955011 B CN 113955011B
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- branch pipe
- seawater
- pipe
- pipeline
- water
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 100
- 238000002844 melting Methods 0.000 title claims abstract description 46
- 230000008018 melting Effects 0.000 title claims abstract description 44
- 238000000034 method Methods 0.000 title claims abstract description 14
- 239000013535 sea water Substances 0.000 claims abstract description 48
- 239000007788 liquid Substances 0.000 claims abstract description 9
- 230000001154 acute effect Effects 0.000 claims description 4
- 230000005484 gravity Effects 0.000 claims description 4
- 239000012738 dissolution medium Substances 0.000 abstract description 2
- 238000010586 diagram Methods 0.000 description 8
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000003595 mist Substances 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
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
Landscapes
- 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 an ice melting pipeline and a method for a water outlet of a deck of an LNG ship in an ice region, wherein the pipeline comprises a water falling pipe connected between the water outlet of the deck and a water outlet on a side, and an ice melting pipeline connected with the water falling pipe and a steam pipeline of the ship respectively, and a control valve used for controlling switching between a normal water falling mode and an ice melting mode is arranged on the ice melting pipeline so as to smoothly discharge normal liquid seawater at the water outlet or seawater after steam conveyed by the steam pipeline at the water outlet is melted through the water falling pipe to the outside of the ship. According to the invention, the ice melting pipeline is connected between the downpipe and the ship steam pipeline, and the ship steam is used as a dissolution medium to melt frozen seawater at the water falling port, so that the problem that the normal sailing of the ship is affected due to the fact that the seawater at the water falling port of the deck is frozen in a low-temperature course is effectively solved, and the sailing safety of the ship is ensured.
Description
Technical Field
The invention relates to the technical field of ship construction, in particular to an ice melting pipeline and method for a deck water outlet of an LNG ship in an ice region.
Background
When the ice area LNG ship runs on the ice area, white spray and droplets are filled in the air and can be blown onto the deck of the ship by wind, sea water drops on the deck of the ship can be discharged to the outside through the downpipe, as shown in figure 1, but due to the fact that the air temperature of the ice area ship is low and the sea condition is complex, the water drops or water mist can be easily frozen near the water falling opening of the downpipe, and if the situation that the ice near the water falling opening is not timely solved, normal sailing of the ship can be directly affected.
Disclosure of Invention
In view of the above, the invention provides an ice melting pipeline and an ice melting method for a deck water outlet of an LNG ship in an ice region, which are used for solving the problem that seawater at the deck water outlet can freeze in a low-temperature course to influence normal navigation of the ship.
An ice melting pipeline for a deck water outlet of an LNG ship in an ice region comprises a water falling pipe connected between the deck water outlet and a side water outlet, and an ice melting pipeline respectively connected with the water falling pipe and a ship steam pipeline,
the control valve is arranged on the ice melting pipeline and used for controlling and switching between a normal water falling mode and an ice melting mode so as to enable normal liquid seawater at the water falling port or seawater after vapor conveyed by the vapor pipeline at the water falling port is melted to be smoothly discharged to the outside through the water falling pipe.
Preferably, the ice melting pipeline comprises a first branch pipe obliquely downwards arranged on the downpipe, a third branch pipe obliquely upwards arranged on the downpipe and connected with the first branch pipe, and a second branch pipe arranged at the junction of the first branch pipe and the third branch pipe and connected with the ship steam pipeline, and the control valve is arranged on the third branch pipe;
when the seawater at the water outlet of the deck is in a normal liquid state, the control valve is in an open state, and the water falling pipe, the first branch pipe and the third branch pipe are communicated with each other;
when the seawater at the water outlet of the deck is frozen, the control valve is closed, and the water pipe is communicated with the first branch pipe and the second branch pipe, so that the steam conveyed by the steam pipeline enters the water pipe to melt the frozen seawater.
Preferably, the included angle between the first branch pipe and the downpipe and the included angle between the third branch pipe and the downpipe are acute angles.
Preferably, the included angle between the first branch pipe and the downpipe is equal to the included angle between the third branch pipe and the downpipe.
Preferably, the included angle between the first branch pipe and the downpipe and the included angle between the third branch pipe and the downpipe are both 30-45 degrees.
Preferably, the third branch pipe is a folded pipe and the vertical section thereof is connected to the first branch pipe so as to form a U-shaped structure with the first branch pipe, and the control valve is mounted on the vertical section of the third branch pipe.
Preferably, the control valve is a shut-off valve.
The ice melting method of the ice melting pipeline at the water outlet of the LNG ship deck in the ice region specifically comprises the following steps:
when the seawater at the water outlet of the deck is in a normal liquid state, the control valve is in an open state, the seawater at the water outlet is discharged to the outside through the water pipe, if part of the seawater flows into the first branch pipe from the joint of the first branch pipe and the water pipe, part of the seawater flowing into the first branch pipe flows back to the water pipe again along the first branch pipe and the third branch pipe under the action of gravity so as to be discharged to the outside;
when the seawater at the water falling port of the deck is frozen, the control valve is closed, the ship steam pipeline is opened, steam in the ship steam pipeline enters the water falling pipe along the second branch pipe and the first branch pipe to melt the frozen seawater at the water falling port, after the frozen seawater at the water falling port is completely melted, the ship steam pipeline is closed, and meanwhile, the control valve is opened, so that the melted seawater is discharged to the outside along the water falling pipe, the first branch pipe and the third branch pipe.
The beneficial effects of the invention are as follows:
1. according to the invention, the ice melting pipeline is connected between the downpipe and the ship steam pipeline, and the ship steam is used as a dissolution medium to melt frozen seawater at the water falling port, so that the problem that the normal sailing of the ship is affected due to the fact that the seawater at the water falling port of the deck is frozen in a low-temperature course is effectively solved, and the sailing safety of the ship is ensured.
2. When ice melting is needed, the working mode of the whole pipeline can be switched by controlling the opening and closing of the control valve on the ice melting pipeline, so that the operation is very simple and convenient, the installation is easy, and the popularization and the use are convenient.
3. Through setting up first branch pipe and third branch pipe slope on the pipe in water to make first branch pipe and third branch pipe be linked together, can make the partial sea water that flows into first branch pipe flow back to the pipe in water and then release to the outboard again along first branch pipe and third branch pipe under the action of gravity, avoid the sea water to stay in first branch pipe and third branch pipe, corrode the body, guaranteed the life of pipeline effectively.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings that are needed 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 that other drawings can be obtained according to these drawings without inventive effort for a person skilled in the art.
Fig. 1 is a schematic diagram of a conventional LNG ship drop pipeline in an ice area.
Fig. 2 is a view showing a state of use of the ice melting circuit of the present invention.
Fig. 3 is a schematic view of drainage of the ice melting pipeline in the normal water falling mode.
FIG. 4 is a schematic view of the ice melting circuit of the present invention in ice melting mode.
The meaning of the reference numerals in the figures is:
1 is a downpipe, 2 is a first branch pipe, 3 is a second branch pipe, 4 is a third branch pipe, 5 is a control valve, 6 is a hull deck, 7 is a side water outlet, 8 is a ship steam pipeline, and 9 is a water outlet.
Detailed Description
For the purpose of making the objects, technical solutions and advantages of the present invention more apparent, the present invention is described below by means of specific embodiments shown in the accompanying drawings. It should be understood that the description is only illustrative and is not intended to limit the scope of the invention. In addition, in the following description, descriptions of well-known structures and techniques are omitted so as not to unnecessarily obscure the present invention.
It should be understood that, although the terms first, second, third, etc. may be used in this disclosure to describe various information, these information should not be limited to these terms, but rather should not be construed as indicating or implying any relative importance. These terms are only used to distinguish one type of information from another. For example, first information may also be referred to as second information, and similarly, second information may also be referred to as first information, without departing from the scope of the present disclosure. The word "if" as used herein may be interpreted as "at … …" or "at … …" or "responsive to a determination", depending on the context.
In the description of the present invention, unless otherwise specified and defined, it should be noted that the terms "mounted," "connected," and "coupled" are to be construed broadly, and may be, for example, mechanical or electrical, or may be in communication with each other between two elements, directly or indirectly through intermediaries, as would be understood by those skilled in the art, in view of the specific meaning of the terms described above.
For a better understanding of the technical solution of the present invention, the following detailed description of the present invention refers to the accompanying drawings.
Fig. 1 is a schematic diagram of a conventional LNG ship drop pipeline in an ice area. As shown in the figure, when the LNG ship runs on the ice area route, as the ambient temperature of the ice area route is very low and the sea condition is complex, sea water which is beaten on the ship deck 6 by sea waves can freeze near the water falling port 9 of the downpipe, and the water falling port 9 can be blocked, so that the normal navigation of the ship is directly affected.
Referring to fig. 2, a schematic structural diagram of a usage state diagram of the ice melting pipeline according to the present invention is shown. As shown in the figure, the ice melting pipeline for the deck water outlet of the LNG ship in the ice area comprises a water falling pipe 1 connected between a deck water outlet 9 and a side water outlet 7, and ice melting pipelines respectively connected with the water falling pipe 1 and a ship steam pipeline 8.
The ice melting pipeline is provided with a control valve 5 for controlling and switching between a normal water falling mode and an ice melting mode so as to smoothly discharge normal liquid seawater at the water falling port 9 or seawater after vapor conveyed by the vapor pipeline 8 at the water falling port 9 to the outboard through the downpipe 1.
Referring to fig. 3 and 4, fig. 3 is a drainage schematic diagram of the ice melting pipeline in the normal water falling mode, and fig. 4 is an ice melting schematic diagram of the ice melting pipeline in the ice melting mode, which is a structural schematic diagram of a usage state diagram of the ice melting pipeline. As shown in the figure, the ice melting pipeline comprises a first branch pipe 2 obliquely downwards arranged on the downpipe 1, a third branch pipe 4 obliquely upwards arranged on the downpipe 1 and connected with the first branch pipe 2, and a second branch pipe 3 arranged at the junction of the first branch pipe 2 and the third branch pipe 4 and connected with the ship steam pipeline 8, and the control valve 5 is arranged on the third branch pipe 4.
When the seawater at the water outlet 9 of the deck is in a normal liquid state, the control valve 5 is in an open state, and the water falling pipe 1, the first branch pipe 2 and the third branch pipe 4 are mutually communicated.
When the seawater at the water outlet 9 of the deck freezes, the control valve 5 is closed, and the water falling pipe 1 is communicated with the first branch pipe 2 and the second branch pipe 3 so that the steam conveyed by the steam pipeline 8 enters the water falling pipe 1 to melt the frozen seawater.
The included angle between the first branch pipe 2 and the downpipe 1 and the included angle between the third branch pipe 4 and the downpipe 1 are acute angles. Preferably, as shown in fig. 3, the included angle between the first branch pipe 2 and the downspout 1 is equal to the included angle between the third branch pipe 4 and the downspout 1, and the included angle is an acute angle α, which may be set to 30 ° -45 °.
In this embodiment, the third branch pipe 4 is a folded pipe, and its vertical section is connected to the first branch pipe 2 so as to form a U-shaped structure with the first branch pipe 2, the control valve 5 is installed on the vertical section of the third branch pipe 4, and the control valve 5 is a stop valve.
When the ice-melting pipeline for the water outlet of the deck of the LNG ship in the ice region is adopted for melting ice, the method specifically comprises the following steps:
when the seawater at the water outlet 9 of the deck is in a normal liquid state, the control valve 5 is in a normally open state, at the moment, the whole ice melting pipeline is in a normal water falling mode, the seawater at the water outlet 9 is discharged to the outside through the water falling pipe 1, if part of the seawater flows into the first branch pipe 2 from the joint of the first branch pipe 2 and the water falling pipe 1, part of the seawater flowing into the first branch pipe 2 flows back to the water falling pipe 1 again along the first branch pipe 2 and the third branch pipe 4 under the action of gravity so as to be discharged to the outside, and therefore, the seawater cannot be left in the first branch pipe 2 and the third branch pipe 4, the first branch pipe 2 and the third branch pipe 4 cannot be corroded, and the service life of the pipeline is effectively ensured.
When the seawater at the water falling opening 9 of the deck freezes, the control valve 5 is closed, the ship steam pipeline 8 is opened, at the moment, the whole deicing pipeline is in a deicing mode, and steam in the ship steam pipeline 8 enters the water falling pipe 1 along the second branch pipe 3 and the first branch pipe 2 to melt the frozen seawater at the water falling opening 9. After the frozen seawater at the water falling port 9 is completely melted, the ship steam pipeline 8 is closed, and meanwhile, the control valve 5 is opened, so that the melted seawater is discharged to the outside along the water falling pipe 1, the first branch pipe 2 and the third branch pipe 4.
It should be understood that the described embodiments are merely some, but not all, embodiments of the invention. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
Claims (5)
1. The ice melting method for the deck water outlet pipeline of the LNG ship in the ice region is characterized in that the deck water outlet pipeline comprises a water falling pipe connected between the deck water outlet and the side water outlet and an ice melting pipeline connected with the water falling pipe and the ship steam pipeline respectively, wherein a control valve for controlling switching between a normal water falling mode and an ice melting mode to enable normal liquid seawater at the water outlet or seawater after being melted by steam conveyed by the steam pipeline at the water outlet to smoothly drain to the outside through the water falling pipe is arranged on the ice melting pipeline;
the ice melting pipeline comprises a first branch pipe obliquely downwards arranged on the downpipe, a third branch pipe obliquely upwards arranged on the downpipe and connected with the first branch pipe, and a second branch pipe arranged at the junction of the first branch pipe and the third branch pipe and connected with the ship steam pipeline;
the third branch pipe is a folded pipe, the vertical section of the third branch pipe is connected with the first branch pipe so as to form a U-shaped structure with the first branch pipe, and the control valve is arranged on the vertical section of the third branch pipe;
the ice melting method specifically comprises the following steps:
when the seawater at the water outlet of the deck is in a normal liquid state, the control valve is in an open state, the seawater at the water outlet is discharged to the outside through the water pipe, if part of the seawater flows into the first branch pipe from the joint of the first branch pipe and the water pipe, part of the seawater flowing into the first branch pipe flows back to the water pipe again along the first branch pipe and the third branch pipe under the action of gravity so as to be discharged to the outside;
when the seawater at the water falling port of the deck is frozen, the control valve is closed, the ship steam pipeline is opened, steam in the ship steam pipeline enters the water falling pipe along the second branch pipe and the first branch pipe to melt the frozen seawater at the water falling port, after the frozen seawater at the water falling port is completely melted, the ship steam pipeline is closed, and meanwhile, the control valve is opened, so that the melted seawater is discharged to the outside along the water falling pipe, the first branch pipe and the third branch pipe.
2. The method of claim 1, wherein the angle between the first branch pipe and the downspout and the angle between the third branch pipe and the downspout are both acute angles.
3. The method of claim 1, wherein the angle between the first branch pipe and the downspout is equal to the angle between the third branch pipe and the downspout.
4. A method of melting ice according to claim 3, wherein the angle between the first branch pipe and the downspout and the angle between the third branch pipe and the downspout are each 30 ° -45 °.
5. The ice-melting method of claim 1, wherein the control valve is a shut-off valve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111389061.8A CN113955011B (en) | 2021-11-22 | 2021-11-22 | Ice melting pipeline and method for water outlet of LNG ship deck in ice region |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111389061.8A CN113955011B (en) | 2021-11-22 | 2021-11-22 | Ice melting pipeline and method for water outlet of LNG ship deck in ice region |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN113955011A CN113955011A (en) | 2022-01-21 |
| CN113955011B true CN113955011B (en) | 2023-11-07 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111389061.8A Active CN113955011B (en) | 2021-11-22 | 2021-11-22 | Ice melting pipeline and method for water outlet of LNG ship deck in ice region |
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| CN (1) | CN113955011B (en) |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH06144354A (en) * | 1992-10-30 | 1994-05-24 | Mitsubishi Heavy Ind Ltd | Spray type outboard drain device |
| DE29722985U1 (en) * | 1997-12-30 | 1998-04-09 | Fischer, Horst, Dr. oec., 06667 Weißenfels | Standpipe as a double element of a rainwater downpipe |
| KR20120028574A (en) * | 2010-09-15 | 2012-03-23 | 삼성중공업 주식회사 | Anchor thawing device |
| KR20130094580A (en) * | 2012-02-16 | 2013-08-26 | 김홍래 | Steam thawing apparatus |
| CN210083472U (en) * | 2019-06-06 | 2020-02-18 | 江苏骥鑫船舶设备有限公司 | Broadside blowing and discharging device |
| KR20200029880A (en) * | 2018-09-11 | 2020-03-19 | 삼성중공업 주식회사 | Method for preventing drain clogging of floater |
| CN213229045U (en) * | 2020-10-19 | 2021-05-18 | 江南造船(集团)有限责任公司 | Intelligent dredging device |
-
2021
- 2021-11-22 CN CN202111389061.8A patent/CN113955011B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH06144354A (en) * | 1992-10-30 | 1994-05-24 | Mitsubishi Heavy Ind Ltd | Spray type outboard drain device |
| DE29722985U1 (en) * | 1997-12-30 | 1998-04-09 | Fischer, Horst, Dr. oec., 06667 Weißenfels | Standpipe as a double element of a rainwater downpipe |
| KR20120028574A (en) * | 2010-09-15 | 2012-03-23 | 삼성중공업 주식회사 | Anchor thawing device |
| KR20130094580A (en) * | 2012-02-16 | 2013-08-26 | 김홍래 | Steam thawing apparatus |
| KR20200029880A (en) * | 2018-09-11 | 2020-03-19 | 삼성중공업 주식회사 | Method for preventing drain clogging of floater |
| CN210083472U (en) * | 2019-06-06 | 2020-02-18 | 江苏骥鑫船舶设备有限公司 | Broadside blowing and discharging device |
| CN213229045U (en) * | 2020-10-19 | 2021-05-18 | 江南造船(集团)有限责任公司 | Intelligent dredging device |
Also Published As
| Publication number | Publication date |
|---|---|
| CN113955011A (en) | 2022-01-21 |
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