Integrated structure of gas collection platform and deckhouse on LNG (liquefied natural gas) filling transport ship and design method

Abstract

The invention discloses an integrated structure of a gas collection platform and a deckhouse on an LNG (Liquefied Natural Gas) filling transport ship and a design method, which only arranges all pipelines originally required to be arranged on the gas collection platform on the deckhouse or the top of the deckhouse and an overhanging platform, and cancels the original gas collection platform independently arranged on a deck; a large number of building materials needed for building the gas collection platform are saved, the building cost of enterprises is reduced, and meanwhile a large number of deck space can be saved for arranging cranes, pipelines, cables and the like; and the overall height of the integrated structure is smaller than the height of the original gas collection platform independently arranged on the deck in the traditional design, so that the arrangement height of the pipeline originally needing to be arranged on the gas collection platform and the arrangement height of the original liquid collection tank of the gas collection platform can be effectively reduced, and the problem that the driving sight is blocked does not exist.

Description

Technical Field

[0001] The present invention relates to the technical field of shipbuilding, and in particular to an integrated structure and design method of a gas gathering platform and a deckhouse on an LNG bunkering transport ship. Background Art

[0002] Depending on the type of ship being served, high and low level gas gathering platforms are required on LNG bunkering transport ships to fill and replenish cryogenic liquid cargo. Liquid collecting tanks are usually required in the gas gathering platform area to prevent cryogenic liquid cargo from leaking and dripping onto the hull structure during transportation and transshipment, causing irreversible damage to the hull structure.

[0003] At present, the high and low gas gathering platforms on LNG bunkering transport ships are generally an independent module. The high gas gathering platform, low gas gathering platform and deckhouse are arranged at different positions of the main deck respectively, and there is no structural connection between them. Therefore, when designing the hull, in addition to arranging the deckhouse on the deck surface of the main deck, it is also necessary to reserve a separate space on the main deck with limited space to build the outfitting platform of the high gas gathering platform and the low gas gathering platform, and then install the liquid collecting tank and corresponding pipelines, pipeline brackets, etc. on the outfitting platform.

[0004] However, due to the small size, large number of equipment and complex system functions of LNG bunkering transport ships, the deck space on the main deck is very tight. If there is not enough space on the main deck to arrange the gas gathering platform, the ship length or width must be increased, which not only increases the design cost but also increases the danger of the actual ship's navigation.

[0005] Especially for LNG bunkering transport ships sailing in inland rivers, the conventional technology of separate design of gas gathering platform and deck house is limited by the driver's line of sight. The location where the traditional high-position gas gathering platform header can be placed is limited. Only part of the space on the bow side of the deck house can be arranged normally, but it may affect the driver's line of sight, such as Figure 1 As shown, for ships with a smaller deck area, deck equipment such as cranes need to be installed on the bow side of the deckhouse, and the high-position gas gathering platform manifold cannot be arranged. Summary of the invention

[0006] In view of this, the present invention provides an integrated structure and design method of a gas gathering platform and a deckhouse on an LNG bunkering transport ship, so as to solve the problems existing in the above-mentioned background technology.

[0007] An integrated structure of a gas gathering platform and a deckhouse on an LNG bunkering transport ship, comprising a deckhouse arranged on the main deck, and a coaming arranged vertically on the top of the deckhouse to enclose a closed area, wherein the top plate of the deckhouse serves as the bottom plate of a liquid collecting tank of the gas gathering platform originally independently arranged at other positions on the main deck, and the coaming serves as the side panel of the liquid collecting tank of the original gas gathering platform, and the pipelines originally required to be arranged on the gas gathering platform are fixed to the top of the deckhouse through support seats so that their leak-prone parts are located above the closed area enclosed by the coaming.

[0008] Preferably, both ends of the roof of the deck house extend outwardly in the Y direction with cantilevered platforms, and the cantilevered platforms and the top plate of the deck house together serve as the platform base of the original gas gathering platform. The first pipeline originally required to be arranged on the gas gathering platform is fixed to the top of the cantilevered platform and the deck house through a support seat, and the second pipeline originally required to be arranged on the gas gathering platform is fixed to the bottom of the cantilevered platform through a pipe bracket, and the space under the cantilevered platform serves as a passage.

[0009] Preferably, one side of the enclosed area enclosed by the coaming is aligned with the side edge of the cantilevered platform, and the other opposite side extends to the deckhouse.

[0010] Preferably, the cantilevered platform is further provided with a support reinforcement, one side of the support reinforcement is fixed to the side wall plate of the deck house, and the other adjacent side is fixed to the bottom of the cantilevered platform, and the support reinforcement is provided with a through hole for the second pipeline to pass through.

[0011] Preferably, the first pipeline comprises a filling pipe;

[0012] The second pipeline includes cable pipes and low-temperature pipelines used to transport liquid cargo to the engine room.

[0013] Preferably, the support reinforcement is arranged at a position aligned with a rib of the ship.

[0014] Preferably, a water retaining plate connected to the coaming is provided at the edge of the top plate of the deck house.

[0015] Preferably, a reinforcement structure is provided on the reverse side of the top plate of the deck house.

[0016] An integrated design method for a gas gathering platform and a deckhouse on an LNG bunkering transport ship specifically comprises the following steps:

[0017] S1, obtain the temperature cloud map of the gas collecting platform sump and deck house according to the temperature field calculation, and select the steel grade according to the temperature cloud map of the gas collecting platform sump and deck house;

[0018] S2, judging whether it is necessary to set up overhanging platforms at both ends of the roof of the deck house according to the occupied area of ​​the pipelines originally required to be arranged on the gas gathering platform and the top plate area of ​​the deck house;

[0019] If the top plate area of ​​the deckhouse is not less than the occupied area of ​​the pipelines originally required to be arranged on the gas gathering platform, step S3 is executed;

[0020] If the top plate area of ​​the deckhouse is smaller than the occupied area of ​​the pipelines originally required to be arranged on the gas gathering platform, step S4 is executed;

[0021] S3, multiple coamings are fixed vertically directly on the top plate of the deck house to enclose a closed area, so that the top plate of the deck house serves as the bottom plate of the gas collecting platform sump originally independently arranged at other positions on the main deck, and the coamings serve as the side panels of the original gas collecting platform sump;

[0022] All pipelines that are originally required to be arranged on the gas gathering platform are fixed on the top of the deck house through the support base and the parts prone to leakage are located above the closed area surrounded by the coaming;

[0023] S4, an overhanging platform is set at both ends of the roof of the deck house, and multiple coamings are vertically fixed on the overhanging platform and the top plate of the deck house to enclose a closed area, so that the overhanging platform and the top plate of the deck house together serve as the bottom plate of the gas collecting platform sump originally independently set at other positions on the main deck, and the coaming serves as the side plate of the original gas collecting platform sump;

[0024] The first pipeline originally required to be arranged on the gas gathering platform is fixed to the top of the cantilever platform and the deck house through a support seat, and the leakage-prone part is located above the closed area surrounded by the coaming. The second pipeline originally required to be arranged on the gas gathering platform is fixed under the cantilever platform through a pipe bracket, and the space under the cantilever platform is used as a passage;

[0025] S5, a reinforcement structure is provided on the reverse side of the top plate of the deck house.

[0026] Preferably, if the top plate area of ​​the deckhouse is not less than the area occupied by the pipelines originally required to be arranged on the gas gathering platform, the closed area surrounded by multiple panels on the top plate of the deckhouse shall be made of 304L or 316L stainless steel, and other areas on the top plate of the deckhouse shall be made of ordinary steel;

[0027] If the top plate area of ​​the deck house is smaller than the area occupied by the pipelines originally required to be arranged on the gas gathering platform, the enclosed area surrounded by multiple panels on the cantilevered platform and the top plate of the deck house shall be made of 304L or 316L stainless steel, and other areas on the top plate of the deck house shall be made of ordinary steel.

[0028] The beneficial effects of the present invention are:

[0029] 1. The deck house is set according to the minimum design height, and all the pipelines originally required to be arranged on the gas gathering platform are only arranged on the deck house or on the top of the deck house and the cantilever platform, and the original independent gas gathering platform on the deck is cancelled, which saves a lot of building materials required for the construction of the gas gathering platform, reduces the construction cost of the enterprise, and also saves a lot of deck space for arranging cranes, pipelines, cables, etc.; and because the overall height of the integrated structure of the present application is less than the height of the original gas gathering platform separately arranged on the deck in the traditional design, it can effectively reduce the arrangement height of the pipelines originally required to be arranged on the gas gathering platform and the original gas gathering platform collecting tank, and there will be no problem of blocking the driving line of sight.

[0030] 2. Using the deckhouse or the top of the deckhouse and the cantilevered platform directly as the bottom of the liquid collecting tank can effectively reduce the layout height of the low-temperature pipelines of the liquid collecting tank and the gas collecting platform compared to the traditional design, avoiding blocking the driver's line of sight.

[0031] 3. By extending the cantilevered platforms at both ends of the deck house, the liquid collecting tank can be set on the cantilevered platform or a part of the area on the cantilevered platform and the top of the deck house, and the whole or most of the area on the top of the deck house is directly used as a gas collecting platform for laying low-temperature pipelines, which can effectively improve the utilization rate of the deck space in the height direction; and by arranging the first pipeline on the top of the cantilevered platform and the deck house, arranging the second pipeline on the reverse top of the cantilevered platform, and arranging the filling pipe and other low-temperature pipelines and cable pipes in partitions, not only can the space under the cantilevered platform be fully utilized, but also the height of the overall pipeline area can be effectively reduced, thereby reducing the overall height of the integrated structure of the present application.

[0032] 4. By integrating the liquid collecting tank on the top of the deck house or the cantilever platform or the deck house and the cantilever platform, the top of the deck house is directly used as a gas collecting platform for laying low-temperature pipelines. The top plate of the deck house has higher supporting strength, which can provide more stable support for the low-temperature pipelines and effectively cope with low-temperature stress and pipeline vibration. In addition, the appearance of the integrated structure of the present application is simpler. Compared with the traditional design, the overall height of the integrated structure of the present application is lower than the minimum design height of the original gas collecting platform. Therefore, the wind resistance can be effectively reduced to avoid airflow whistling. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0034] Figure 1 This is a schematic diagram of the traditional gas gathering platform and deck house being arranged separately and independently.

[0035] Figure 2 It is a structural schematic diagram of the present invention.

[0036] The meanings of the numbers in the figure are:

[0037] 1 is a deck house, 2 is a roof of the deck house, 3 is a coaming, 4 is a trough bottom plate, 5 is an outrigger platform, 6 is a support reinforcement, 7 is a water retaining plate, 8 is a first pipeline, 9 is a support seat, 10 is a second pipeline, 11 is a passage, 12 is a cab, 13 is a high-level gas collecting platform, and 14 is the pipeline layout position of the high-level gas collecting platform. DETAILED DESCRIPTION

[0038] In order to make the purpose, technical scheme and advantages of the present invention clearer, the present invention is described below by the specific embodiments shown in the accompanying drawings. However, it should be understood that these descriptions are only exemplary and are not intended to limit the scope of the present invention. In addition, in the following description, the description of well-known structures and technologies is omitted to avoid unnecessary confusion of the concept of the present invention.

[0039] The terms used in this disclosure are for the purpose of describing specific embodiments only and are not intended to limit the disclosure. The singular forms of "a", "said" and "the" used in this disclosure and the appended claims are also intended to include plural forms unless the context clearly indicates otherwise. It should also be understood that the term "and / or" used herein refers to and includes any or all possible combinations of one or more associated listed items.

[0040] It should be understood that although the terms first, second, etc. may be used in the present disclosure to describe various information, such information should not be limited to these terms and should not be understood as indicating or implying relative importance. These terms are only used to distinguish information of the same type from each other. For example, without departing from the scope of the present disclosure, the first information may also be referred to as the second information, and similarly, the second information may also be referred to as the first information. Depending on the context, the word "if" as used herein may be interpreted as "at the time of" or "when" or "in response to determining".

[0041] In the description of the present invention, it is necessary to understand that the terms "up", "down", "left", "right", "vertical", "horizontal", "top", "bottom", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0042] In the description of the present invention, unless otherwise specified and limited, it should be noted that the terms "installed", "connected" and "connected" should be understood in a broad sense. For example, it can be a mechanical connection or an electrical connection, or it can be the internal connection between two components. It can be a direct connection or an indirect connection through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms can be understood according to the specific circumstances.

[0043] In order to better understand the technical solution of the present invention, the present invention is described in detail below with reference to the accompanying drawings.

[0044] Embodiment 1, the present invention provides an integrated structure of a gas gathering platform and a deckhouse on an LNG bunkering transport ship, comprising a deckhouse 1 arranged on a main deck, and a coaming 3 vertically arranged on the top of the deckhouse 1 and enclosing a closed area.

[0045] In this embodiment, the gas collecting platform liquid collecting tank originally independently arranged at other positions on the main deck is referred to as the original gas collecting platform liquid collecting tank, and the gas collecting platform originally independently arranged at other positions on the main deck is referred to as the original gas collecting platform. The top plate of the deck house 1 serves as the bottom plate 4 of the original gas collecting platform liquid collecting tank, and the coaming 3 serves as the side panel of the original gas collecting platform liquid collecting tank. The pipelines originally required to be arranged on the gas collecting platform are fixed to the top of the deck house 1 through the support seat 9 and the leakage-prone parts are located above the closed area surrounded by the coaming 3. After the cryogenic liquid leaks, it can be directly collected in the closed area surrounded by the coaming 3 to prevent the leaked cryogenic liquid from spreading and damaging the non-cryogenic structure.

[0046] Specifically, in this embodiment, the top plate area of ​​the deckhouse 1 is not less than the area occupied by the pipelines originally required to be arranged on the gas gathering platform. According to the occupied area required by all pipelines originally required to be arranged on the gas gathering platform on the ship, a part of the area or the entire area is directly selected on the top plate of the deckhouse 1, and a fixed enclosure 3 is welded on the edge of the selected area. The enclosure 3 is used to enclose the selected area into a closed area as a liquid collecting tank, so that the top plate of the deckhouse 1 serves as the bottom plate 4 of the liquid collecting tank of the original gas gathering platform, and the enclosure 3 serves as the side panel of the liquid collecting tank of the original gas gathering platform.

[0047] All pipelines originally required to be arranged on the gas gathering platform are laid with the deckhouse 1 as the platform and the top plate of the deckhouse 1 as the platform surface, that is, the support seat 9 of the pipeline is fixed on the top of the deckhouse 1 and the leakage-prone part is located above the closed area surrounded by the coaming 3. The pipelines include a filling pipe for transporting cryogenic liquid cargo to other ships, a cryogenic pipeline for transporting cryogenic liquid cargo to the engine room, and a cable pipe.

[0048] In this embodiment, the length and width of the closed area (liquid collecting trough) enclosed by the enclosure 3 are slightly smaller than the length and width of the top plate of the deck house 1 at which it is located, and the enclosure 3 on at least one side of the closed area (liquid collecting trough) is aligned with the corresponding side on the top plate of the deck house 1.

[0049] The edge of the top plate of the deckhouse 1 is provided with a water retaining plate 7 connected with the coaming 3, so that the water retaining plate 7 is connected and sealed with the coaming 3 around the sump, so as to restrain rainwater when necessary and prevent rainwater on the roof of the deckhouse from pouring down from the edge of the roof. It should be noted that the top plate of the deckhouse 1 is not a horizontal plane, but an inclined plane. The plate surface of the top plate of the deckhouse 1 where the sump is provided is lower, while the plate surface on the other opposite side is higher. A water leakage hole is provided at the lower part of the plate surface of the top plate of the deckhouse 1. Preferably, the water leakage hole can be provided on the inner side of the water retaining plate 7 so that rainwater on the top of the deckhouse can flow out from the water leakage hole.

[0050] Usually, the high-level gas-gathering platform, low-level gas-gathering platform and deckhouse of LNG bunkering transport ships are arranged at different positions on the main deck, and the high-level gas-gathering platform and low-level gas-gathering platform are set at the front side (bow side) of the deckhouse. The high-level gas-gathering platform, low-level gas-gathering platform and deckhouse have their own minimum design height and maximum design height when they are designed, but generally speaking, the overall height of the high-level and low-level gas-gathering platforms is higher than the height of the deckhouse (because the gas-gathering platform needs to set the cryogenic pipeline at a certain height to ensure the smooth transportation of cryogenic liquid cargo), and the gas-gathering platform is located at the front side of the deckhouse, so it will block the driving view of the deckhouse, and it will also increase the wind resistance and produce airflow whistling.

[0051] In this embodiment, the deckhouse 1 is arranged according to the minimum design height, and all the pipelines originally required to be arranged on the gas gathering platform are only arranged on the top of the deckhouse 1, the gas gathering platform on the deck is eliminated, and the liquid collecting tank that was originally required to be independently arranged is eliminated, thereby saving a large amount of building materials required for the construction of the gas gathering platform and the liquid collecting tank, and reducing the construction cost of the enterprise. In addition, since the overall height of the integrated structure of the present application is less than the height of the gas gathering platform originally separately arranged on the deck in the traditional design, the arrangement height of the pipelines originally required to be arranged on the gas gathering platform and the liquid collecting tank of the original gas gathering platform can be effectively reduced, and there will be no problem of blocking the driving line of sight.

[0052] Since all pipelines and original liquid collecting tanks originally required to be arranged on the gas gathering platform are arranged on the top of the deck house 1, in order to align and provide effective and stable support, a reinforcement structure can be added on the reverse side of the top plate of the deck house 1 according to the stress calculation results.

[0053] In this embodiment, the deckhouse 1 is a cargo machinery room, but may also be other deckhouses.

[0054] At the same time, since most of the pipelines arranged on the top of the deck house 1 (i.e., the pipelines originally required to be arranged on the gas gathering platform) are cryogenic pipelines required to transport cryogenic liquid cargo (liquid LNG), it is necessary to calculate the temperature cloud map of the enclosed area enclosed by the top plate of the deck house 1 and the coaming 3 through the temperature field, and adjust the steel grade of the relevant part structure based on this to meet the strength and functional requirements of the integrated design. In this embodiment, the enclosed area enclosed by the multiple coamings 3 on the top plate of the deck house 1 is made of 304L or 316L stainless steel, and other areas on the top plate of the deck house 1 are made of ordinary steel.

[0055] In the second embodiment, the present invention provides an integrated structure of a gas gathering platform and a deckhouse on an LNG bunkering transport ship, including a deckhouse 1 arranged on the main deck, a cantilevered platform 5 extending from both ends of the roof of the deckhouse in the Y direction, and a enclosure 3 vertically arranged on the top of the deckhouse 1 and the top of the cantilevered platform 5 to enclose a closed area.

[0056] Specifically, in this embodiment, the top plate area of ​​the deckhouse 1 is smaller than the area occupied by the pipelines originally required to be arranged on the gas gathering platform. According to the area required to be occupied by all the pipelines originally required to be arranged on the gas gathering platform on the ship, the top of the cantilevered platform 5 and a part or all of the top of the deckhouse 1 are selected as the area, and the coaming 3 is welded and fixed at the edge of the selected area. The coaming 3 is used to enclose the selected area into a closed area as a liquid collecting tank, so that the cantilevered platform 5 and the top plate of the deckhouse 1 are used together as the bottom plate 4 of the liquid collecting tank of the original gas gathering platform, and the coaming 3 is used as the side panel of the liquid collecting tank of the original gas gathering platform. All pipelines originally required to be arranged on the gas gathering platform are laid with the entirety of the deck house 1 and the cantilevered platform 5 as the platform and the entire top plate composed of the deck house 1 and the cantilevered platform 5 as the platform surface. Among them, the first pipeline 8 originally required to be arranged on the gas gathering platform is fixed to the top of the cantilevered platform 5 and the deck house 1 through a support seat 9 and its leak-prone part is located above the closed area surrounded by the coaming 3. The second pipeline 10 originally required to be arranged on the gas gathering platform is fixed to the bottom of the cantilevered platform 5 through a pipe bracket, and the space under the cantilevered platform 5 is used as a passage 11.

[0057] The first pipeline 8 includes a filling pipe for transporting cryogenic liquid cargo to other ships; the second pipeline 10 includes a cable pipe and a cryogenic pipeline for transporting cryogenic liquid cargo to the engine room. By arranging the first pipeline 8 on the top of the cantilever platform 5 and the deckhouse 1, arranging the second pipeline 10 on the reverse top of the cantilever platform 5, and arranging the filling pipe with other cryogenic pipelines and cable pipes in partitions, not only can the space below the cantilever platform be fully utilized, but also the overall pipeline area height can be effectively reduced, thereby reducing the overall height of the integrated structure of the present application.

[0058] In this embodiment, one side of the enclosed area enclosed by the enclosure 3 is aligned with the side edge of the cantilevered platform 5, and the other opposite side extends to the deck house 1. The width of the enclosed area enclosed by the enclosure 3 is smaller than the width of the cantilevered platform 5.

[0059] The cantilevered platform 5 is also provided with a support reinforcement 6, one side of the support reinforcement 6 is fixed to the side wall plate of the deck house 1, and the other adjacent side is fixed to the bottom of the cantilevered platform 6, and the support reinforcement 6 is provided with a through hole for the second pipeline 10 to pass through. The setting position of the support reinforcement 6 is aligned with the rib position of the ship. Preferably, a support reinforcement 6 can be set at each rib position.

[0060] The edge of the top plate of the deckhouse 1 is provided with a water retaining plate 7 connected with the coaming 3, so that the water retaining plate 7 is connected and sealed with the coaming 3 around the sump, so as to restrain rainwater when necessary and prevent rainwater on the roof of the deckhouse from pouring down from the edge of the roof. It should be noted that the top plate of the deckhouse 1 is not a horizontal plane, but an inclined plane. The plate surface of the top plate of the deckhouse 1 where the sump is provided is lower, while the plate surface on the other opposite side is higher. A water leakage hole is provided at the lower part of the plate surface of the top plate of the deckhouse 1. Preferably, the water leakage hole can be provided on the inner side of the water retaining plate 7 so that rainwater on the top of the deckhouse can flow out from the water leakage hole.

[0061] Usually, the high-level gas-gathering platform, low-level gas-gathering platform and deckhouse of LNG bunkering transport ships are arranged at different positions on the main deck, and the high-level gas-gathering platform and low-level gas-gathering platform are set at the front side (bow side) of the deckhouse. The high-level gas-gathering platform, low-level gas-gathering platform and deckhouse have their own minimum design height and maximum design height when they are designed, but generally speaking, the height of the high-level gas-gathering platform is higher than that of the deckhouse (because the gas-gathering platform needs to set the cryogenic pipeline at a certain height to ensure the smooth transportation of cryogenic liquid cargo), and the gas-gathering platform is located at the front side of the deckhouse, so it will block the driving view of the cab, and it will also increase the wind resistance and produce airflow whistling.

[0062] In this embodiment, the deckhouse 1 is arranged according to the minimum design height, and all the pipelines originally required to be arranged on the gas gathering platform are only arranged on the top of the deckhouse 1, the gas gathering platform on the deck is eliminated, and the liquid collecting tank that was originally required to be independently arranged is eliminated, thereby saving a large amount of building materials required for the construction of the gas gathering platform and the liquid collecting tank, and reducing the construction cost of the enterprise. In addition, since the overall height of the integrated structure of the present application is less than the height of the gas gathering platform originally separately arranged on the deck in the traditional design, the arrangement height of the pipelines originally required to be arranged on the gas gathering platform and the liquid collecting tank of the original gas gathering platform can be effectively reduced, and there will be no problem of blocking the driving line of sight.

[0063] Since all pipelines and original liquid collecting tanks originally required to be arranged on the gas gathering platform are arranged on the top of the deck house 1, in order to align and provide effective and stable support, a reinforcement structure can be added on the reverse side of the top plate of the deck house 1 according to the stress calculation results.

[0064] In this embodiment, the deckhouse 1 is a cargo machinery room, but may also be other deckhouses.

[0065] At the same time, since most of the pipelines arranged on the top of the deck house 1 (i.e., the pipelines originally required to be arranged on the gas gathering platform) are cryogenic pipelines required to transport cryogenic liquid cargo (liquid LNG), it is necessary to calculate the temperature cloud map of the enclosed area enclosed by the top plate of the deck house 1 and the coaming 3 through the temperature field, and adjust the steel grade of the relevant structure based on this to meet the strength and functional requirements of the integrated design. In this embodiment, the enclosed area enclosed by the cantilever platform 5 and the multiple coamings 3 on the top plate of the deck house 1 are made of 304L or 316L stainless steel, and other areas on the top plate of the deck house 1 are made of ordinary steel.

[0066] The present invention also provides an integrated design method for a gas gathering platform and a deckhouse on an LNG bunkering transport ship, which specifically includes the following steps:

[0067] S1, obtain the temperature cloud map of the gas collecting platform sump and deck house according to the temperature field calculation, and select the steel grade according to the temperature cloud map of the gas collecting platform sump and deck house;

[0068] S2, judging whether it is necessary to set up overhanging platforms 5 at both ends of the roof of the deck house 1 according to the occupied area of ​​the pipelines originally required to be arranged on the gas gathering platform and the top plate area of ​​the deck house 1;

[0069] If the top plate area of ​​the deckhouse 1 is not less than the occupied area of ​​the pipelines originally required to be arranged on the gas gathering platform, step S3 is executed;

[0070] If the top plate area of ​​the deckhouse 1 is smaller than the occupied area of ​​the pipelines originally required to be arranged on the gas gathering platform, step S4 is executed;

[0071] S3, a plurality of coamings 3 are fixed vertically directly on the top plate of the deck house 1 to enclose a closed area, so that the top plate of the deck house 1 serves as the bottom plate 4 of the gas collecting platform liquid collecting tank originally independently arranged at other positions on the main deck, and the coamings 3 serve as the side panels of the original gas collecting platform liquid collecting tank;

[0072] All pipelines originally required to be arranged on the gas gathering platform are fixed on the top of the deck house 1 through the support seat 9 so that the parts prone to leakage are located above the closed area surrounded by the coaming 3;

[0073] S4, an overhanging platform 5 is provided at both ends of the roof of the deck house 1, and a plurality of coamings 3 are vertically fixed on the overhanging platform 5 and the top plate of the deck house 1 to enclose a closed area, so that the overhanging platform 5 and the top plate of the deck house 1 together serve as the bottom plate 4 of the gas collecting platform liquid collecting tank originally independently provided at other positions on the main deck, and the coamings 3 serve as the side panels of the original gas collecting platform liquid collecting tank;

[0074] The first pipeline 8 originally required to be arranged on the gas gathering platform is fixed to the top of the overhanging platform 5 and the deck house 1 through the support seat 9, and the leakage-prone part is located above the closed area surrounded by the coaming 3. The second pipeline 10 originally required to be arranged on the gas gathering platform is fixed below the overhanging platform 5 through the pipe bracket, and the space below the overhanging platform 5 is used as a passage 11;

[0075] S5, a reinforcement structure is provided on the reverse side of the top plate of the deck house 1.

[0076] Preferably, if the top plate area of ​​the deckhouse 1 is not less than the occupied area of ​​the pipelines originally required to be arranged on the gas gathering platform, the closed area surrounded by the multiple panels 3 on the top plate of the deckhouse 1 is made of 304L or 316L stainless steel, and the other areas on the top plate of the deckhouse 1 are made of ordinary steel;

[0077] If the top plate area of ​​the deckhouse 1 is smaller than the area occupied by the pipelines originally required to be arranged on the gas gathering platform, the closed area surrounded by the cantilever platform 5 and the multiple panels 3 on the top plate of the deckhouse 1 shall be made of 304L or 316L stainless steel, and other areas on the top plate of the deckhouse 1 shall be made of ordinary steel.

[0078] The present application can be used not only on LNG bunkering ships, but also on LNG transport ships, which can be inland ships or ships sailing on the sea.

[0079] It should be clear that the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

Claims

1. An integrated structure of a gas gathering platform and a deckhouse on an LNG bunkering transport ship, characterized in that: The invention comprises a deckhouse (1) arranged on the main deck, and a coaming (3) arranged vertically on the top of the deckhouse (1) and enclosing a closed area, wherein the top plate of the deckhouse (1) serves as a bottom plate (4) of a gas collecting platform liquid collecting tank originally independently arranged at other positions on the main deck, and the coaming (3) serves as a side plate of the original gas collecting platform liquid collecting tank, and the pipeline originally required to be arranged on the gas collecting platform is fixed to the top of the deckhouse (1) through a support seat (9) so that its leak-prone part is located above the closed area enclosed by the coaming (3).

2. The integrated structure of the gas gathering platform and the deck house on the LNG bunkering transport ship according to claim 1 is characterized in that: Both ends of the roof of the deck house (1) extend outwardly to form a cantilevered platform (5) in the Y direction. The cantilevered platform (5) and the top plate of the deck house (1) together serve as the platform base of the original gas collection platform. The first pipeline (8) originally required to be arranged on the gas collection platform is fixed to the top of the cantilevered platform (5) and the deck house (1) through a support seat (9). The second pipeline (10) originally required to be arranged on the gas collection platform is fixed to the bottom of the cantilevered platform (5) through a pipe bracket. The space below the cantilevered platform (5) serves as a passage (11).

3. The integrated structure of the gas gathering platform and the deck house on the LNG bunkering transport ship according to claim 2 is characterized in that: One side of the closed area enclosed by the coaming (3) is aligned with the side edge of the cantilevered platform (5), and the other opposite side extends to the deck house (1).

4. The integrated structure of the gas gathering platform and the deck house on the LNG bunkering transport ship according to claim 2 is characterized in that: The cantilevered platform (5) is also provided with a support reinforcement (6), one side of the support reinforcement (6) is fixed to the side wall plate of the deck house (1), and the other adjacent side is fixed to the bottom of the cantilevered platform (6), and the support reinforcement (6) is provided with a through hole for the second pipeline (10) to pass through.

5. The integrated structure of the gas gathering platform and the deck house on the LNG bunkering transport ship according to claim 2 is characterized in that: The first pipeline (8) includes a filling pipe; The second pipeline (10) includes a cable pipe and a low-temperature pipeline for transporting liquid cargo to the engine room.

6. The integrated structure of the gas gathering platform and the deck house on the LNG bunkering transport ship according to claim 4 is characterized in that: The support reinforcement (6) is arranged at a position aligned with the rib position of the ship.

7. The integrated structure of the gas gathering platform and the deck house on the LNG bunkering transport ship according to claim 1 is characterized in that: The edge of the top plate of the deck house (1) is provided with a water retaining plate (7) connected with the coaming plate (3).

8. The integrated structure of the gas gathering platform and the deck house on the LNG bunkering transport ship according to claim 1 is characterized in that: A reinforcement structure is added to the reverse side of the top plate of the deck house (1).

9. An integrated design method for a gas gathering platform and a deckhouse on an LNG bunkering transport ship, characterized in that: The specific steps include: S1, obtain the temperature cloud map of the gas collecting platform sump and deck house according to the temperature field calculation, and select the steel grade according to the temperature cloud map of the gas collecting platform sump and deck house; S2, judging whether it is necessary to provide overhanging platforms (5) at both ends of the roof of the deck house (1) according to the occupied area of ​​the pipelines originally required to be arranged on the gas gathering platform and the top plate area of ​​the deck house (1); If the top plate area of ​​the deckhouse (1) is not less than the occupied area of ​​the pipelines originally required to be arranged on the gas gathering platform, step S3 is executed; If the top plate area of ​​the deckhouse (1) is smaller than the occupied area of ​​the pipelines originally required to be arranged on the gas gathering platform, step S4 is executed; S3, a plurality of coamings (3) are vertically fixed directly on the top plate of the deck house (1) to enclose a closed area, so that the top plate of the deck house (1) serves as the bottom plate (4) of the gas collecting platform liquid collecting tank originally independently arranged at other positions on the main deck, and the coamings (3) serve as the side panels of the original gas collecting platform liquid collecting tank; All pipelines originally required to be arranged on the gas gathering platform are fixed to the top of the deck house (1) through a support seat (9) so that the parts prone to leakage are located above the closed area surrounded by the coaming (3); S4, a cantilevered platform (5) is provided at both ends of the roof of the deck house (1), and a plurality of coamings (3) are vertically fixed on the cantilevered platform (5) and the top plate of the deck house (1) to enclose a closed area, so that the cantilevered platform (5) and the top plate of the deck house (1) together serve as the bottom plate (4) of the gas collecting platform liquid collecting tank originally independently provided at other positions on the main deck, and the coamings (3) serve as the side panels of the original gas collecting platform liquid collecting tank; The first pipeline (8) originally required to be arranged on the gas gathering platform is fixed to the top of the cantilevered platform (5) and the deckhouse (1) through a support seat (9) so that the leak-prone part is located above the closed area surrounded by the coaming (3); the second pipeline (10) originally required to be arranged on the gas gathering platform is fixed below the cantilevered platform (5) through a pipe bracket, and the space below the cantilevered platform (5) is used as a passage (11); S5, a reinforcement structure is provided on the reverse side of the top plate of the deck house (1).

10. The integrated design method of the gas gathering platform and deck house on the LNG bunkering transport ship according to claim 1, characterized in that: If the top plate area of ​​the deckhouse (1) is not less than the area occupied by the pipelines originally required to be arranged on the gas gathering platform, the closed area enclosed by the multiple coamings (3) on the top plate of the deckhouse (1) shall be made of 304L or 316L stainless steel, and the other areas on the top plate of the deckhouse (1) shall be made of ordinary steel; If the top plate area of ​​the deckhouse (1) is smaller than the area occupied by the pipelines originally required to be arranged on the gas gathering platform, the closed area enclosed by the multiple panels (3) on the cantilevered platform (5) and the top plate of the deckhouse (1) is made of 304L or 316L stainless steel, and the other areas on the top plate of the deckhouse (1) are made of ordinary steel.

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