CN109606539B - Roll-in type installation method for air compressor of low-temperature pipe system of LNG ship - Google Patents
Roll-in type installation method for air compressor of low-temperature pipe system of LNG ship Download PDFInfo
- Publication number
- CN109606539B CN109606539B CN201811291021.8A CN201811291021A CN109606539B CN 109606539 B CN109606539 B CN 109606539B CN 201811291021 A CN201811291021 A CN 201811291021A CN 109606539 B CN109606539 B CN 109606539B
- Authority
- CN
- China
- Prior art keywords
- compressor
- base
- hole
- roll
- installation method
- 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.)
- Active
Links
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
- B63B—SHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING
- B63B71/00—Designing vessels; Predicting their performance
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
- B63B—SHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING
- B63B25/00—Load-accommodating arrangements, e.g. stowing, trimming; Vessels characterised thereby
- B63B25/02—Load-accommodating arrangements, e.g. stowing, trimming; Vessels characterised thereby for bulk goods
- B63B25/08—Load-accommodating arrangements, e.g. stowing, trimming; Vessels characterised thereby for bulk goods fluid
- B63B25/12—Load-accommodating arrangements, e.g. stowing, trimming; Vessels characterised thereby for bulk goods fluid closed
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- Ocean & Marine Engineering (AREA)
- Filling Or Discharging Of Gas Storage Vessels (AREA)
Abstract
The invention discloses a roll-in type installation method for an air compressor of a low-temperature pipe system of an LNG ship, which comprises the following steps: a first hole is formed in a ceiling of the mechanical chamber; drawing a base positioning line of the compressor on a dome deck; hoisting the base from the first hole; welding and fixing a base at a base positioning line drawn on a dome deck, and drilling a screw hole on the base; hanging the transfer seat from the first hole; welding and fixing the transfer base on the dome deck close to the base; arranging a plurality of round pipes on the base and the transfer seat, and installing a hanging ring in the ceiling of the motor chamber; a compressor is hung in the first hole, the compressor is placed on a round pipe of the transfer base, one end of a rope is connected to the compressor, and the other end of the rope sequentially penetrates through a second hole in the transverse bulkhead and the hanging ring to be connected with a traction device; the traction device pulls the steel wire rope, so that the compressor moves to the position above the base. The invention has the beneficial effects that the compressor is safely, reliably and accurately installed in place.
Description
Technical Field
The invention belongs to the technical field of ship construction, and particularly relates to a roll-in type installation method for an air compressor of an LNG ship low-temperature pipe system.
Background
LNG ships transport liquefied natural gas, and the liquefied natural gas has natural volatilization characteristics. The volatile gas belongs to waste gas, and can be utilized after being treated by a low-temperature system, so that fuel is provided for a ship power system. In cryogenic systems, an air compressor is an important device for compressing the volatile gas to fuel pressure. The compressor is typically located on the dome deck and is mounted inside the cargo machinery room. The cargo machinery room is a cuboid steel structure and is provided with a ceiling deck and four surrounding walls, and the cargo machinery room is divided into two rooms, namely a machinery room and a motor room, by a transverse bulkhead. In design, the air compressor of the low-temperature pipe system is embedded and installed on a transverse bulkhead of a partition room, a web plate folded edge of the equipment is welded with the transverse bulkhead in an angle joint mode, one end of the motor of the equipment is located in a motor room, and one end of the compressor is located in a mechanical room.
Since the compressor belongs to an inlet device, the arrival time usually lags behind, which brings about several problems for the construction: first, how to let the compressor enter the interior of the room when the hoisting of the room is finished. Secondly, the compressor belongs to valuable equipment, so that the compressor is not allowed to be collided and damaged, and the transportation in a room needs to ensure safety and reliability. Finally, the final installation position of the compressor is embedded into the transverse bulkhead, and how to ensure accurate installation in place is also the problem to be solved, so that the structure edge is accurately connected with the folded edge of the equipment web plate in an angle mode.
In summary, there is no method for safely, reliably and accurately feeding the compressor into the room and installing the compressor in place after the room of the cargo machine room is covered, and there is no production scheme for dealing with the delay of the arrival time of the equipment.
Disclosure of Invention
The invention provides a roll-in installation method of an air compressor of a low-temperature pipe system of an LNG ship, aiming at the problems in the prior art.
In order to achieve the purpose, the invention adopts the following technical scheme:
a roll-in installation method for an air compressor of a low-temperature pipe system of an LNG ship comprises the following steps:
a first hole is formed in a ceiling of the mechanical chamber;
drawing a base positioning line of the compressor on a dome deck;
hoisting the base from the first hole;
welding and fixing a base at a base positioning line drawn on a dome deck, and drilling a screw hole on the base;
hanging the transfer seat from the first hole;
welding and fixing the transfer base on the dome deck close to the base; the transfer seat is positioned close to the base, the positioning of the transfer seat can be controlled by adopting a fixed channel steel, and the transfer seat is removed after the compressor is conveyed;
arranging a plurality of round pipes on the base and the transfer seat, and installing a hanging ring in the ceiling of the motor chamber;
hoisting a compressor from the first hole, enabling a motor on the compressor to face a motor chamber, placing the compressor on a circular pipe of a transfer base, connecting one end of a rope on the compressor, and sequentially enabling the other end of the rope to penetrate through a second hole in a transverse bulkhead and a hoisting ring to be connected with a traction device; the second hole on the transverse bulkhead is opened in the sectional manufacturing stage;
the traction device pulls the steel wire rope, so that the compressor moves above the base, and the web plate of the compressor is located in the second hole;
the compressor is connected with the base through an adjusting bolt;
adjusting the adjusting bolt to level the compressor;
pouring epoxy resin between the compressor and the base;
and welding the structural flitch between the second hole and the web.
Before the transfer seat is welded and fixed on the dome deck next to the base, the transfer seat comprises:
and trimming the upper surface of the base to make the upper surface of the base horizontal.
The trimming of the base upper surface such that the base upper surface is horizontal, comprising:
a plurality of angle steels are spot-welded around the positioning line of the base, and the height of each angle steel is greater than that of the base;
a horizontal line is defined on the angle steel through a level meter;
knocking out a plurality of ocean rushing points on a horizontal line;
determining a horizontal plane according to the ocean rush point pull line;
and trimming the upper surface of the base according to the horizontal plane.
The traction device is a chain block.
Before draw gear pulls the wire rope, include:
and trimming a second hole in the transverse bulkhead. I.e. the steel plates at the top and bottom of the second hole are cut, the width of the cut steel strip being 25-40 mm.
Before pouring the epoxy resin between the compressor and the base, the method comprises the following steps:
hanging a pipe module matched with the compressor from the first hole;
assembling the pipe module with the compressor;
the height of the compressor is adjusted so that the pipe module is aligned with the interface of the compressor.
After welding the structural patch between the second hole and the web, comprising:
and (5) carrying out air tightness inspection on the welding seam of the structural flitch.
The air tightness test adopts a vacuum cover detection device or PT test.
Compared with the prior art, the invention has the beneficial effects that:
1. the invention is based on the general design form of the existing LNG ship, and provides a safe, reliable and accurate installation method aiming at special equipment, and the practical inspection proves that the method is feasible, and the important production node for installing the compressor equipment is realized on schedule;
2. the invention relates to an indoor transportation and installation method of valuable equipment, which has wide universality;
3. the compressor is slowly pulled by matching the transmission seat with the circular tube, so that the compressor can safely reach the installation position.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
Fig. 1 is a schematic view of the overall structure of the present invention.
FIG. 2 is a schematic view of the welding between the web and the structural patch and the second hole of the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be obtained by a person skilled in the art without inventive effort based on the embodiments of the present invention, are within the scope of the present invention.
In the description of the present invention, it is to be understood that the terms "longitudinal", "lateral", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on those shown in the drawings, and are used merely for convenience of description and for simplicity of description, and do not indicate or imply that the referenced devices or elements must have a particular orientation, be constructed in a particular orientation, and be operated, and thus, are not to be construed as limiting the present invention.
As shown in fig. 1-2, the present embodiment provides a roll-in installation method of an air compressor of a cryogenic pipe system of an LNG ship, the installation method including:
a first hole 10 is formed in a ceiling of the mechanical chamber;
drawing a base 12 positioning line of a compressor 15 on a dome deck 11;
hanging the base 12 from the first hole 10;
welding and fixing a base 12 at a base 12 positioning line drawn on a dome deck 11, and drilling a screw hole on the base 12;
hanging the transfer base 13 from the first hole 10;
welding and fixing the transfer base 13 on the dome deck 11 close to the base 12;
a plurality of round pipes are arranged on the base 12 and the transmission seat 13, and a hanging ring 14 is arranged in the ceiling of the motor chamber;
a compressor 15 is hung in the first hole 10, a motor on the compressor 15 faces a motor chamber, the compressor 15 is placed on a circular pipe of the transfer base 13, one end of a rope is connected to the compressor 15, and the other end of the rope sequentially penetrates through a second hole 16 on a transverse bulkhead and a hanging ring 14 to be connected with a traction device;
the traction means pulls the cable so that the compressor 15 moves over the base 12 so that the web 17 of the compressor 15 is in the second bore 16;
the upper part of the compressor 15 is connected with the base 12 through an adjusting bolt;
adjusting the adjusting bolt to level the compressor 15;
pouring epoxy resin between the compressor 15 and the base 12;
the structural patch 18 is welded between the second hole 16 and the web 17.
As a further preference, the present embodiment, before the transfer base 13 is welded and fixed on the dome deck 11, immediately adjacent to the base 12, includes:
the upper surface of the susceptor 12 is trimmed so that the upper surface of the susceptor 12 is horizontal.
As a further preferred aspect, the trimming the upper surface of the base 12 to make the upper surface of the base 12 horizontal in the present embodiment includes:
a plurality of angle steels are spot-welded around the positioning line of the base 12, and the height of the angle steels is greater than that of the base 12;
a horizontal line is defined on the angle steel through a level meter;
knocking out a plurality of ocean rushing points on a horizontal line;
determining a horizontal plane according to the ocean rush point pull line;
the upper surface of the susceptor 12 is trimmed according to the horizontal plane.
Preferably, the traction device is a chain block.
As a further preferred aspect, before the pulling device pulls the steel wire rope, the device includes:
a second hole 16 in the transverse bulkhead is trimmed.
Further preferably, in this embodiment, before the epoxy resin is poured between the compressor 15 and the base 12, the method includes:
hanging a pipe module matched with a compressor 15 from the first hole 10;
assembling the pipe module with the compressor 15;
the height of the compressor 15 is adjusted so that the pipe module is aligned with the interface of the compressor 15.
As a further preferred, after welding the structural patch 18 between the second hole 16 and the web 17, the present embodiment includes:
the welds of the structural skin panels 18 are tested for air tightness.
Further preferably, the airtightness test in the embodiment adopts a vacuum hood detection device or a PT test.
Although the present invention has been described in detail with respect to the above embodiments, it will be understood by those skilled in the art that modifications or improvements based on the disclosure of the present invention may be made without departing from the spirit and scope of the invention, and these modifications and improvements are within the spirit and scope of the invention.
Claims (8)
1. A roll-in installation method for an air compressor of a low-temperature pipe system of an LNG ship is characterized by comprising the following steps:
a first hole (10) is formed in a ceiling of the mechanical chamber;
drawing a base (12) positioning line of a compressor (15) on a dome deck (11);
hanging the base (12) from the first hole (10);
welding and fixing a base (12) at a base (12) positioning line drawn on a dome deck (11), and drilling a screw hole on the base (12);
hanging a transfer seat (13) from the first hole (10);
welding and fixing a transfer seat (13) on a dome deck (11) close to a base (12);
a plurality of round pipes are arranged on the base (12) and the transfer seat (13), and a hanging ring (14) is arranged in the ceiling of the motor chamber;
a compressor (15) is hung in the first hole (10), a motor on the compressor (15) faces a motor chamber, the compressor (15) is placed on a circular pipe of the transfer base (13), one end of a rope is connected to the compressor (15), and the other end of the rope sequentially penetrates through a second hole (16) in the transverse bulkhead and a hanging ring (14) to be connected with a traction device;
the traction device pulls the steel wire rope, so that the compressor (15) moves to the position above the base (12), and the web (17) of the compressor (15) is located in the second hole (16);
connecting a compressor (15) with the base (12) through an adjusting bolt;
adjusting the adjusting bolt to level the compressor (15);
pouring epoxy resin between the compressor (15) and the base (12);
a structural patch (18) is welded between the second hole (16) and the web (17).
2. The LNG ship cryogenic pipe system air compressor roll-in installation method according to claim 1, characterized in that the welding fixing of the transfer seat (13) on the dome deck (11) immediately before the base (12) comprises:
trimming the upper surface of the base (12) so that the upper surface of the base (12) is horizontal.
3. The LNG ship cryotube system air compressor roll-in installation method of claim 2, wherein the trimming the upper surface of the foundation (12) such that the upper surface of the foundation (12) is horizontal comprises:
a plurality of angle steels are spot-welded around the positioning line of the base (12), and the height of each angle steel is greater than that of the base (12);
a horizontal line is defined on the angle steel through a level meter;
knocking out a plurality of ocean rushing points on a horizontal line;
determining a horizontal plane according to the ocean rush point pull line;
the upper surface of the susceptor (12) is trimmed according to the horizontal plane.
4. The roll-in installation method of an air compressor of a cryogenic pipe system of an LNG ship according to claim 1, characterized in that the traction device is a chain block.
5. The roll-in installation method of an air compressor of a cryogenic pipe system of an LNG ship according to claim 1, wherein before the traction device pulls the steel wire rope, the method comprises:
a second hole (16) in the transverse bulkhead is trimmed.
6. The LNG ship cryogenic pipe system air compressor roll-in installation method of claim 1, characterized in that before pouring epoxy between the compressor (15) and the foundation (12), it comprises:
hanging a pipe module matched with a compressor (15) from the first hole (10);
assembling the tube module with a compressor (15);
the height of the compressor (15) is adjusted so that the pipe module is aligned with the interface of the compressor (15).
7. The LNG ship cryogenic pipe system air compressor roll-in installation method of claim 1, characterized in that after welding the structural patch (18) between the second hole (16) and the web (17), comprising:
the welds of the structural panels (18) are tested for gas tightness.
8. The roll-in installation method of an air compressor of a cryogenic pipe system of an LNG ship of claim 7, characterized in that the airtightness test uses a vacuum hood detection device or a PT test.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811291021.8A CN109606539B (en) | 2018-10-31 | 2018-10-31 | Roll-in type installation method for air compressor of low-temperature pipe system of LNG ship |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811291021.8A CN109606539B (en) | 2018-10-31 | 2018-10-31 | Roll-in type installation method for air compressor of low-temperature pipe system of LNG ship |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109606539A CN109606539A (en) | 2019-04-12 |
| CN109606539B true CN109606539B (en) | 2020-11-20 |
Family
ID=66002891
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811291021.8A Active CN109606539B (en) | 2018-10-31 | 2018-10-31 | Roll-in type installation method for air compressor of low-temperature pipe system of LNG ship |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109606539B (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103101604A (en) * | 2011-11-13 | 2013-05-15 | 中国葛洲坝集团机械船舶有限公司 | Liquefied gas transport ship |
| CN103189273A (en) * | 2010-08-25 | 2013-07-03 | 瓦特西拉石油和天然气***有限公司 | A method and arrangement for providing LNG fuel for ships |
| CN103569311A (en) * | 2012-07-19 | 2014-02-12 | 烟台中集来福士海洋工程有限公司 | Propeller installing and positioning device and propeller underwater installing method |
| CN107187545A (en) * | 2017-05-22 | 2017-09-22 | 南通中远船务工程有限公司 | The installation method of gas compression Module functionality unit |
| CN107264721A (en) * | 2017-05-22 | 2017-10-20 | 南通中远船务工程有限公司 | The installation method of gas compression module |
-
2018
- 2018-10-31 CN CN201811291021.8A patent/CN109606539B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103189273A (en) * | 2010-08-25 | 2013-07-03 | 瓦特西拉石油和天然气***有限公司 | A method and arrangement for providing LNG fuel for ships |
| CN103101604A (en) * | 2011-11-13 | 2013-05-15 | 中国葛洲坝集团机械船舶有限公司 | Liquefied gas transport ship |
| CN103569311A (en) * | 2012-07-19 | 2014-02-12 | 烟台中集来福士海洋工程有限公司 | Propeller installing and positioning device and propeller underwater installing method |
| CN107187545A (en) * | 2017-05-22 | 2017-09-22 | 南通中远船务工程有限公司 | The installation method of gas compression Module functionality unit |
| CN107264721A (en) * | 2017-05-22 | 2017-10-20 | 南通中远船务工程有限公司 | The installation method of gas compression module |
Also Published As
| Publication number | Publication date |
|---|---|
| CN109606539A (en) | 2019-04-12 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN110440429A (en) | Subway arch top ventilation shaft assembling constructing method | |
| US7469650B2 (en) | Method and apparatus for off-hull manufacture and installation of a semi-membrane LNG tank | |
| KR102655964B1 (en) | Methods for assembling sealed and insulated tanks | |
| US20180347175A1 (en) | Modular building structure for a turbomachinery equipment | |
| CN110440054A (en) | Subway station refrigerator room pipeline assembling constructing method | |
| CN109606539B (en) | Roll-in type installation method for air compressor of low-temperature pipe system of LNG ship | |
| CA3035167A1 (en) | Modular compression plant | |
| KR20210027273A (en) | Liquefaction devices, methods, and systems | |
| CN113562137A (en) | Modularized construction method between FGSS, FGSS and ship | |
| US9527576B2 (en) | Method and assembly for attaching fuel system components to a rib before the assembly is joined to an aircraft wing | |
| CN210562294U (en) | Underground structure of open cut tunnel and piping lane built jointly | |
| CN214565239U (en) | Comprehensive maintenance station for hydrogen fuel cell automobile | |
| CN205137056U (en) | Liquefied natural gas liquid feeding sledge | |
| CN210598250U (en) | Remove room hoist and mount auxiliary device | |
| CN210152382U (en) | Steel pipe pole | |
| CN114590368B (en) | Arrangement method of fuel gas equipment of dual-fuel ship | |
| RU2790907C1 (en) | Lpg storage plant | |
| CN219545048U (en) | Public gas of ocean oil gas platform and instrument gas processing module | |
| CN218153672U (en) | Filling station's buried pipeline infiltration detection device | |
| CN209878463U (en) | Interface suitable for small-caliber PCCP interface hydrostatic test | |
| CN209945659U (en) | Cable cabin | |
| CN118124745A (en) | Ship guy cable device penetrating A15-level and A60-level deck bulkheads and ship | |
| JP2005110405A (en) | Base block for distribution board and installation method for distribution board using the block | |
| CN115839477A (en) | Pump tower device for liquefied natural gas storage tank | |
| JP2023025909A (en) | Waterproof airtight inlet pipe management system |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |