CN114954835A - Installation method of LNG ship deck low-temperature pipe unit module - Google Patents
Installation method of LNG ship deck low-temperature pipe unit module Download PDFInfo
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- CN114954835A CN114954835A CN202210439536.8A CN202210439536A CN114954835A CN 114954835 A CN114954835 A CN 114954835A CN 202210439536 A CN202210439536 A CN 202210439536A CN 114954835 A CN114954835 A CN 114954835A
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- starboard
- deck
- port
- low
- pipe
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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
- B63B73/00—Building or assembling vessels or marine structures, e.g. hulls or offshore platforms
- B63B73/20—Building or assembling prefabricated vessel modules or parts other than hull blocks, e.g. engine rooms, rudders, propellers, superstructures, berths, holds or tanks
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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
- B63B73/00—Building or assembling vessels or marine structures, e.g. hulls or offshore platforms
- B63B73/30—Moving or transporting modules or hull blocks to assembly sites, e.g. by rolling, lifting or floating
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- Architecture (AREA)
- Structural Engineering (AREA)
- Chemical & Material Sciences (AREA)
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- Mechanical Engineering (AREA)
- Ocean & Marine Engineering (AREA)
- Transportation (AREA)
- Filling Or Discharging Of Gas Storage Vessels (AREA)
Abstract
The invention discloses an installation method of LNG ship deck low-temperature pipe unit modules, which integrates low-temperature pipes of port and starboard parts of a header region into a unit module at a platform stage respectively, transfers most of the original installation work of the low-temperature pipes needing to be bulk-loaded to a front channel, and can install all the low-temperature pipes in place at one time only by integrally hoisting the port deck low-temperature pipe module and the starboard deck low-temperature pipe module onto a ship when the low-temperature pipes are installed on the ship, thereby not only improving the installation efficiency of the low-temperature pipes, but also avoiding secondary adjustment of the installation accuracy of the low-temperature pipes in subsequent construction.
Description
Technical Field
The invention relates to the technical field of ship construction, in particular to an installation method of an LNG ship deck low-temperature pipe unit module.
Background
The low-temperature pipeline of the LNG ship cargo treatment system is difficult to install and high in welding requirement. In the prior art, the low-temperature pipes positioned among the port and starboard sides of the header area, the main deck and the dome deck of the LNG ship are not positioned on the same installation plane, have large height difference and can only be completely made into bulk pipes, and after the deck units are installed, one pipe is installed on the port and starboard sides of the header area. This method has the following disadvantages:
1. the method ensures that a large number of low-temperature pipes on the left side and the right side of the deck need to be loaded in bulk on the ship, so that each pipe needs to be hoisted onto the ship by a wharf crane and then is assisted by the crane for positioning, thereby occupying a large amount of time of the wharf crane and having extremely low efficiency.
2. The structure that port and starboard header district is located makes the installation operation degree of difficulty big, needs the on-the-spot a large amount of man-hours construction that expends, and the cryogenic duct length of port and starboard side is longer simultaneously, whole slope span is higher, appears the risk of toppling easily during the installation.
3. The method ensures that a large amount of secondary adjustment and correction operations caused by the fact that the installation precision is not in place exist on the ship at the later stage.
Disclosure of Invention
In view of the above, the invention provides an installation method of an LNG ship deck cryogenic pipe unit module, which integrates the cryogenic pipes of the port and starboard parts of a header area into one unit module at a platform stage, so that most of the installation work of the cryogenic pipes which originally need to be in bulk is transferred to a front channel, and when the cryogenic pipes are installed on a ship, all the cryogenic pipes can be installed in place at one time only by integrally hoisting the port deck cryogenic pipe module and the starboard deck cryogenic pipe module on the ship, thereby effectively solving a series of problems in the background art.
An installation method of an LNG ship deck cryogenic pipe unit module specifically comprises the following steps:
s1, assembling the port deck low-temperature pipe module and the starboard deck low-temperature pipe module at a platform stage;
the port deck low-temperature pipe module comprises a port support, a port upper-layer low-temperature pipe and a port lower-layer low-temperature pipe, wherein the port support comprises a port supporting leg, a port upper-layer supporting frame fixed at the top of the port supporting leg and a port lower-layer supporting frame fixed on the port supporting leg and positioned below the port upper-layer supporting frame;
the starboard deck low-temperature pipe module comprises a starboard support, a starboard upper-layer low-temperature pipe and a starboard lower-layer low-temperature pipe, wherein the starboard support comprises a starboard supporting leg, a starboard upper-layer supporting frame fixed at the top of the starboard supporting leg and a starboard lower-layer supporting frame fixed on the starboard supporting leg and positioned below the starboard upper-layer supporting frame;
s2, hoisting the low-temperature pipe module of the middle deck of the ship positioned in the middle of the main deck to the ship;
s3, integrally hoisting the port deck low-temperature pipe module and the starboard deck low-temperature pipe module to get on board, wherein a port support of the port deck low-temperature pipe module is fixed on the main deck, a left supporting leg is fixed on the port inclined deck, a starboard support of the starboard deck low-temperature pipe module is fixed on the main deck, and a right supporting leg is fixed on the starboard inclined deck;
and S4, connecting pipelines butted between the ship middle deck low-temperature pipe module and the port deck low-temperature pipe module and the starboard deck low-temperature pipe module through a folding pipe.
Preferably, the port upper cryogenic pipe and the starboard upper cryogenic pipe are identical in structure and are respectively composed of a longitudinal pipe section, a transverse pipe section connected with the longitudinal pipe section, an obliquely arranged slope open-shore pipe section connected with the transverse pipe section and a header joint connected with the slope open-shore pipe section, and the height of the header joint is flush with the deck surface of the main deck.
Preferably, the inclined included angle between the slope landing pipe section and the transverse pipe section is 90-120 degrees.
Preferably, the inclined included angle between the slope landing pipe section and the transverse pipe section is 112 degrees.
Preferably, the port upper-layer cryogenic tube and the starboard upper-layer cryogenic tube are arranged in plurality, and the plurality of port upper-layer cryogenic tubes and the plurality of starboard upper-layer cryogenic tubes are arranged at equal intervals.
The invention has the beneficial effects that:
1. according to the invention, the low-temperature pipes of the port and starboard parts of the header area are respectively integrated into a unit module at the platform stage, so that most of the original installation work of the low-temperature pipes needing to be in bulk is transferred to a front channel, and when the low-temperature pipes are installed on a ship, all the low-temperature pipes can be installed in place at one time by integrally hoisting the port deck low-temperature pipe module and the starboard deck low-temperature pipe module on the ship, so that a series of problems caused by the bulk installation of the port and starboard part low-temperature pipes are effectively solved.
2. The low-temperature pipes on the port and starboard parts of the header area are respectively integrated into a unit module in the platform stage, when the low-temperature pipes are installed in the stage, most of the pipes can be installed in an auxiliary mode only by a truck crane, and part of the pipes can be installed and positioned even without additional auxiliary tools, so that the installation difficulty of the low-temperature pipes is effectively reduced, meanwhile, the use of lifting tools is reduced, and the installation efficiency of the low-temperature pipes is improved.
3. The port deck low-temperature pipe module and the starboard deck low-temperature pipe module are integrally hoisted and loaded onto a ship, so that all low-temperature pipes can be installed in place at one time, the installation efficiency of the port and starboard side low-temperature pipes is greatly improved, secondary adjustment on the installation accuracy of the low-temperature pipes is not needed in subsequent construction, the workload of large-scale adjustment, accuracy detection and the like is reduced, and the construction period of the ship is greatly shortened.
4. The method of the invention advances the installation of the LNG ship slope cryogenic pipe (slope landing pipe section) from the dock stage to the platform stage, can save about 6 days of cryogenic pipe dock installation period on each ship, can reduce the probability of safety accidents while improving the production efficiency, and can further shorten the construction period of the LNG ship.
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.
Figure 1 is a top view of a starboard deck cryogenic pipe module.
Figure 2 is a left side view of a starboard deck cryogenic pipe module.
Figure 3 is a top view of a port deck cryogenic pipe module.
Figure 4 is a left side view of a port deck cryogenic pipe module.
Fig. 5 is a schematic illustration of a starboard deck cryogenic pipe module being hoisted onto a ship.
The reference numerals in the figures have the meaning:
1 is a port support, 11 is a port supporting leg, 12 is a port upper layer supporting frame, 13 is a port lower layer supporting frame, 14 is a left supporting leg,
2 is a port upper-layer low-temperature tube,
3 is a low-temperature pipe at the lower layer of the port,
5 is a starboard upper-layer low-temperature pipe,
6 is a low-temperature pipe at the lower layer of the starboard,
7 is a longitudinal pipe section, and the longitudinal pipe section,
the number 8 is the transverse pipe section,
9 is a slope landing pipe section,
the number 10 is a header joint, and,
the main deck is shown at 11, and,
12 is a port side inclined deck plate,
13 is a starboard inclined deck, 13,
14 is a platform.
Detailed Description
For better understanding of the technical solutions of the present invention, the following detailed descriptions of the embodiments of the present invention are provided with reference to the accompanying drawings.
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.
The present application is described in further detail below with reference to specific embodiments and with reference to the attached drawings.
In the description of the present application, the term "plurality" means two or more unless explicitly stated or limited otherwise; the terms "connected" and "fixed" are used in a broad sense, for example, "connected" may be a fixed connection, a detachable connection, or an integral connection; may be directly connected or indirectly connected through an intermediate. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
In the description of the present application, it should be understood that the terms "upper", "lower", "left", "right", and the like used in the embodiments of the present application are described with reference to the angles shown in the drawings, and should not be construed as limiting the embodiments of the present application. In addition, in this context, it will also be understood that when an element is referred to as being "on" or "under" another element, it can be directly on "or" under "the other element or be indirectly on" or "under" the other element via an intermediate element.
The invention provides an installation method of an LNG ship deck cryogenic pipe unit module, which specifically comprises the following steps:
and S1, assembling the port deck low-temperature pipe module and the starboard deck low-temperature pipe module at the stage of the platform.
The port deck cryogenic tube module comprises a port support 1, a port upper-layer cryogenic tube 2 and a port lower-layer cryogenic tube 3, wherein the port support 1 comprises a port supporting leg 11, a port upper-layer support frame 12 fixed to the top of the port supporting leg 11, and a port lower-layer support frame 13 fixed to the port supporting leg 11 and located below the port upper-layer support frame 12, the port upper-layer cryogenic tube 2 is laid on the port upper-layer support frame 12, and the port lower-layer cryogenic tube 3 is laid on the port lower-layer support frame 13.
The starboard deck low-temperature pipe module comprises a starboard support 4, a starboard upper-layer low-temperature pipe 5 and a starboard lower-layer low-temperature pipe 6, wherein the starboard support 4 comprises a starboard support leg 41, a starboard upper-layer support frame 42 fixed to the top of the starboard support leg 41 and a starboard lower-layer support frame 43 fixed to the starboard support leg 41 and located below the starboard upper-layer support frame 42, the starboard upper-layer low-temperature pipe 5 is laid on the starboard upper-layer support frame 42, and the starboard lower-layer low-temperature pipe 6 is laid on the starboard lower-layer support frame 43.
The structure of the port upper-layer low-temperature pipe 2 is the same as that of the starboard upper-layer low-temperature pipe 5, and the port upper-layer low-temperature pipe and the starboard upper-layer low-temperature pipe are respectively a longitudinal pipe section 7, a transverse pipe section 8 connected with the longitudinal pipe section 7, a slope shore-through pipe section 9 obliquely connected with the transverse pipe section 8, and a header joint 10 connected with the slope shore-through pipe section 9, wherein the height of the header joint 10 is flush with the deck surface of a main deck.
The header joint at the bottom of the port upper-layer cryogenic pipe 2 is supported by a left supporting leg 14, so that the header joint of the port deck cryogenic pipe module can be flush with the deck surface after the port deck cryogenic pipe module is loaded on the ship, the inclined height of a slope shore pipe section can be greatly reduced, and the overturning risk is avoided. In this embodiment, the inclined included angle between the slope landing section of the port upper-layer cryogenic pipe 2 and the transverse pipe section is 90 ° to 120 °, and preferably, the optimum included angle between the slope landing section and the transverse pipe section is 112 °.
Similarly, the header joint at the bottom of the starboard upper cryogenic pipe 5 is supported by the right support foot 44, so that the header joint can be flush with the deck surface after the starboard deck cryogenic pipe module is on board, in this embodiment, the inclined included angle between the slope landing pipe section of the starboard upper cryogenic pipe 5 and the transverse pipe section is 90-120 °, and preferably, the optimum included angle between the slope landing pipe section and the transverse pipe section is 112 °.
And S2, hoisting the low-temperature pipe module of the middle deck of the ship positioned in the middle of the main deck to the ship. In the conventional installation process of the deck cryogenic pipe, the middle deck cryogenic pipe module in the middle of the main deck is integrally hoisted to the ship as a unit module, and therefore, in this embodiment, the specific structure thereof is not specifically described.
And S3, integrally hoisting the port deck low-temperature pipe module and the starboard deck low-temperature pipe module to get on board, wherein a port support 1 of the port deck low-temperature pipe module is fixed on the main deck, a left support foot 14 of the port deck low-temperature pipe module is fixed on a platform on the port inclined deck, a starboard support 4 of the starboard deck low-temperature pipe module is fixed on the main deck, and a right support foot 44 of the starboard deck low-temperature pipe module is fixed on the platform on the starboard inclined deck.
After the port deck low-temperature pipe module and the starboard deck low-temperature pipe module are installed, the header connectors at the bottoms of the port upper-layer low-temperature pipe 2 and the starboard upper-layer low-temperature pipe 5 are flush with the deck surface of the main deck.
And S4, connecting pipelines butted between the ship middle deck low-temperature pipe module and the port deck low-temperature pipe module and the starboard deck low-temperature pipe module through a folding pipe.
Preferably, a plurality of the port upper layer cryogenic pipes 2 and a plurality of the starboard upper layer cryogenic pipes 5 are provided, and the plurality of the port upper layer cryogenic pipes 2 and the plurality of the starboard upper layer cryogenic pipes 5 are provided at equal distances.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and should not be taken as limiting the scope of the present invention, and any modifications, equivalents, improvements and the like made within the spirit and principle of the present invention should be included in the scope of the present invention.
Claims (5)
1. The installation method of the LNG ship deck cryogenic pipe unit module is characterized by comprising the following steps:
s1, assembling the port deck low-temperature pipe module and the starboard deck low-temperature pipe module at a platform stage;
the port deck low-temperature pipe module comprises a port support, a port upper-layer low-temperature pipe and a port lower-layer low-temperature pipe, wherein the port support comprises a port supporting leg, a port upper-layer supporting frame fixed at the top of the port supporting leg and a port lower-layer supporting frame fixed on the port supporting leg and positioned below the port upper-layer supporting frame;
the starboard deck low-temperature pipe module comprises a starboard support, a starboard upper-layer low-temperature pipe and a starboard lower-layer low-temperature pipe, wherein the starboard support comprises a starboard supporting leg, a starboard upper-layer supporting frame fixed at the top of the starboard supporting leg and a starboard lower-layer supporting frame fixed on the starboard supporting leg and positioned below the starboard upper-layer supporting frame;
s2, hoisting the low-temperature pipe module of the middle deck of the ship positioned in the middle of the main deck to the ship;
s3, integrally hoisting the port deck low-temperature pipe module and the starboard deck low-temperature pipe module to get on board, wherein a port support of the port deck low-temperature pipe module is fixed on the main deck, a left supporting leg is fixed on the port inclined deck, a starboard support of the starboard deck low-temperature pipe module is fixed on the main deck, and a right supporting leg is fixed on the starboard inclined deck;
and S4, connecting pipelines butted between the ship middle deck low-temperature pipe module and the port deck low-temperature pipe module and the starboard deck low-temperature pipe module through a folding pipe.
2. The method of installing an LNG ship deck cryogenic pipe unit module of claim 1, wherein the port and starboard upper cryogenic pipes are identical in structure and are each comprised of a longitudinal pipe section, a transverse pipe section connected to the longitudinal pipe section, an obliquely disposed sloped landing pipe section connected to the transverse pipe section, and a header fitting connected to the sloped landing pipe section, the header fitting being disposed at a height level with a deck surface of the main deck.
3. The method of installing an LNG ship deck cryogenic pipe unit module of claim 2, wherein the inclined angle between the sloped landing pipe section and the transverse pipe section is between 90 ° and 120 °.
4. The method of installing an LNG ship deck cryogenic pipe unit module of claim 3, wherein the inclined angle between the sloped landing pipe section and the transverse pipe section is 112 °.
5. The method of installing an LNG ship deck cryogenic pipe unit module according to claim 1 or 2, wherein a plurality of the port and starboard upper cryogenic pipes are provided, and a plurality of the port and starboard upper cryogenic pipes are provided at equal intervals.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210439536.8A CN114954835A (en) | 2022-04-25 | 2022-04-25 | Installation method of LNG ship deck low-temperature pipe unit module |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202210439536.8A CN114954835A (en) | 2022-04-25 | 2022-04-25 | Installation method of LNG ship deck low-temperature pipe unit module |
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| CN114954835A true CN114954835A (en) | 2022-08-30 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115675788A (en) * | 2022-11-22 | 2023-02-03 | 沪东中华造船(集团)有限公司 | Large LNG ship gas collection platform and total section preassembling method of ultra-long inclined wall pipe |
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| JPH05193552A (en) * | 1992-01-17 | 1993-08-03 | Ishikawajima Harima Heavy Ind Co Ltd | How to equip a longitudinal pipe in a ship |
| KR20140025700A (en) * | 2012-08-22 | 2014-03-05 | 대우조선해양 주식회사 | Compatible loading system for lng carrier |
| WO2017123679A1 (en) * | 2016-01-12 | 2017-07-20 | Excelerate Liquefaction Solutions, Llc | Natural gas liquefaction vessel |
| CN109625161A (en) * | 2018-10-31 | 2019-04-16 | 上海江南长兴造船有限责任公司 | A kind of method of construction of chemical tanker header region unit |
| CN112109858A (en) * | 2020-09-27 | 2020-12-22 | 江南造船(集团)有限责任公司 | Mounting precision control process for support base plate of liquefied gas carrier deck liquid cargo system |
| KR20210071557A (en) * | 2019-12-06 | 2021-06-16 | 대우조선해양 주식회사 | Lng transportation system for a lng-floating storage ship |
| CN113772042A (en) * | 2021-09-26 | 2021-12-10 | 沪东中华造船(集团)有限公司 | A design method for segmenting the cargo hold area of an 80,000 cubic membrane-type membrane LNG carrier and cargo hold segmenting |
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2022
- 2022-04-25 CN CN202210439536.8A patent/CN114954835A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH05193552A (en) * | 1992-01-17 | 1993-08-03 | Ishikawajima Harima Heavy Ind Co Ltd | How to equip a longitudinal pipe in a ship |
| KR20140025700A (en) * | 2012-08-22 | 2014-03-05 | 대우조선해양 주식회사 | Compatible loading system for lng carrier |
| WO2017123679A1 (en) * | 2016-01-12 | 2017-07-20 | Excelerate Liquefaction Solutions, Llc | Natural gas liquefaction vessel |
| CN109625161A (en) * | 2018-10-31 | 2019-04-16 | 上海江南长兴造船有限责任公司 | A kind of method of construction of chemical tanker header region unit |
| KR20210071557A (en) * | 2019-12-06 | 2021-06-16 | 대우조선해양 주식회사 | Lng transportation system for a lng-floating storage ship |
| CN112109858A (en) * | 2020-09-27 | 2020-12-22 | 江南造船(集团)有限责任公司 | Mounting precision control process for support base plate of liquefied gas carrier deck liquid cargo system |
| CN113772042A (en) * | 2021-09-26 | 2021-12-10 | 沪东中华造船(集团)有限公司 | A design method for segmenting the cargo hold area of an 80,000 cubic membrane-type membrane LNG carrier and cargo hold segmenting |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115675788A (en) * | 2022-11-22 | 2023-02-03 | 沪东中华造船(集团)有限公司 | Large LNG ship gas collection platform and total section preassembling method of ultra-long inclined wall pipe |
| CN115675788B (en) * | 2022-11-22 | 2024-06-11 | 沪东中华造船(集团)有限公司 | Main section preassembling method of large LNG ship gas collecting platform and ultra-long inclined wall pipe |
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Application publication date: 20220830 |