CN114148889A

CN114148889A - LNG-FSRU ship regasification module carrying and hoisting method

Info

Publication number: CN114148889A
Application number: CN202111431624.5A
Authority: CN
Inventors: 佟宇; 干维嘉; 陆银弟; 朱勇; 陈健; 徐慧君
Original assignee: Shanghai Jiangnan Changxing Shipbuilding Co Ltd
Current assignee: Shanghai Jiangnan Changxing Shipbuilding Co Ltd
Priority date: 2021-11-29
Filing date: 2021-11-29
Publication date: 2022-03-08
Anticipated expiration: 2041-11-29
Also published as: CN114148889B

Abstract

The invention discloses a loading and hoisting method for a regasification module of an LNG-FSRU ship, which is characterized in that a gantry crane is matched with a rotary hoisting row and M1 modules and M3 modules which are connected with a stay bar to hoist the regasification module, so that a steel wire rope can be ensured to be vertical to the M1 module or the M3 module in a hoisting process, the M1 module or the M3 module can be ensured to be always in a horizontal state in the hoisting process, and the phenomenon of side turning caused by inclination in the hoisting process is avoided.

Description

LNG-FSRU ship regasification module carrying and hoisting method

Technical Field

The invention relates to the technical field of ship construction, in particular to a method for carrying and hoisting a regasification module of an LNG-FSRU ship.

Background

The LNG-FSRU (floating LNG storage and regasification unit) is a special device that integrates multiple functions of LNG receiving, storage, transfer, regasification and transportation, and has the function of an LNG carrier when equipped with a propulsion system.

17 ten thousand 4 km³The FSRU ship regasification module is arranged at the position of a bow deck of a bow and is divided into three large-scale module units, namely an M1 module, which are arranged on the starboard, and the total weight is 424T; an M2 module, arranged in a ship, gross weight 77T; m3 module, placed port, gross 226T. The three groups of modules have complicated internal structures, special carrying and placing positions and extremely high hoisting requirements.

At present, when M1 modules and M3 modules are hoisted, the following problems exist:

1. in the hoisting process, the steel wire rope must be kept in a vertical state to avoid all piping equipment;

2. the gravity center positions of the M1 module and the M3 module are not at the geometric center of the arrangement of the lifting points, so that the M1 module and the M3 module are difficult to be always in a horizontal state in the lifting process.

Disclosure of Invention

In view of the above, the present invention provides a method for lifting and loading a regasification module of an LNG-FSRU ship, so as to solve the above problems in the background art.

A method for carrying and hoisting a regasification module of an LNG-FSRU ship specifically comprises the following steps:

s1, connecting a lifting hook at a first position on the gantry crane with a rotary hanging bar, connecting the rotary hanging bar with all upper hanging rings in a first group of hanging rings on a connecting support rod, and connecting all lower hanging rings in the first group of hanging rings on the connecting support rod with an M1 module of a regasification module;

s2, connecting a lifting hook at a second position on the gantry crane with an upper opening lifting ring positioned on the port side in a first group of lifting rings on a connecting support rod;

s3, starting a gantry crane to hoist the M1 module of the regasification module to a target position, after the M1 module is hoisted to the target position, rotating the M1 module by using a rotary hoisting bar to form a set included angle with the center line of a ship body, and then releasing a hook of the gantry crane to place the M1 module in place;

s4, connecting a lifting hook at a first position on the gantry crane with a rotary hanging bar, connecting the rotary hanging bar with all upper hanging rings in a second group of hanging rings on a connecting support rod, and connecting all lower hanging rings in the second group of hanging rings on the connecting support rod with an M3 module of a regasification module;

s5, connecting a lifting hook at a second position on the gantry crane with an upper opening lifting ring positioned on the starboard side in a second group of lifting rings on the connecting support rod;

s6, starting the gantry crane to hoist the M3 module of the regasification module to a target position, after the M3 module is hoisted to the target position, rotating the M3 module by using the rotary hoisting bar to form a set included angle with the center line of the ship body, and then releasing the hook of the gantry crane to place the M3 module in place.

Preferably, the connecting brace is a rectangular frame structure composed of straight bars which are staggered transversely and longitudinally, the upper part and the lower part of the connecting part between each longitudinal bar and the cross bar are respectively fixed with a hanging ring, the first group of hanging rings are hanging rings arranged at four corners of the rectangular frame, and the second group of hanging rings are hanging rings arranged on the frame edge of the rectangular frame.

Preferably, the maximum load of the connecting strut is not less than 500 t.

Preferably, the step of the gantry crane lifting the M1 module of the regasification module to the target position is the same as the step of the gantry crane lifting the M3 module of the regasification module to the target position, and both the steps include:

firstly, starting a gantry crane to hoist an M1 module or an M3 module to a position at a first height from the ground, and carrying out safety inspection;

and after the safety inspection is correct, continuously hoisting the M1 module or the M3 module, and adjusting the internal and external horizontal states of the M1 module or the M3 module by using a lifting hook at a second position on the gantry crane in the whole hoisting process.

Preferably, the first height is 500mm from the ground.

Preferably, the lifting hook at the first position on the gantry crane is a 1# lifting hook and a 2# lifting hook, and the lifting hook at the second position is a 3# lifting hook.

Preferably, the rotary hanger bar is an electric rotary hanger bar capable of horizontally rotating, and the maximum load of the electric rotary hanger bar is not less than 550 t.

Preferably, after the lifting device is lifted to the position, the M1 module and the M3 module form an included angle of 16 degrees with the center line of the ship body.

The invention has the beneficial effects that:

according to the invention, the gantry crane is matched with the rotary hoisting row and the M1 module and the M3 module which are connected with the strut hoisting regasification module, so that a steel wire rope is ensured to be vertical to the M1 module or the M3 module in the hoisting process, the M1 module or the M3 module is ensured to be always in a horizontal state in the hoisting process, and the phenomenon of side turning caused by inclination in the hoisting process is avoided. Meanwhile, after the M1 module or the M3 module is hoisted in place, the M1 module or the M3 module can be horizontally rotated to form an included angle of 16 degrees with the center line of the ship body, and the hoisting precision of the M1 module or the M3 module is effectively guaranteed.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings needed to be used in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.

Fig. 1 is a top view of a connecting strut.

Fig. 2 is a side view of the connecting strut.

Fig. 3 is a side view of the regas module with the M1 module in the erected position.

Fig. 4 is a front view of the M1 module of the regasification module when erected.

Fig. 5 is a side view of the regas module with the M3 module in the erected position.

Fig. 6 is a front view of the M3 module of the regasification module when erected.

The reference numerals in the figures have the meaning:

1-8 are respectively a lifting ring 1-a

lifting ring

8, 9 is a gantry crane, 10 is a 1# lifting hook, 11 is a 2# lifting hook, 13 is a 3# lifting hook, 14 is a lifting beam, 15 is a lifting row, 16 is a connecting support rod, 17 is an M1 module, and 18 is an M3 module.

Detailed Description

In order that the objects, aspects and advantages of the invention will become more apparent, the invention will be described by way of example only, and in connection with the accompanying drawings. It is to be understood that such description is merely illustrative and not intended to limit the scope of the present invention. Moreover, in the following description, descriptions of well-known structures and techniques are omitted so as to not unnecessarily obscure the concepts of the present invention.

The terminology used in the present disclosure is for the purpose of describing particular embodiments only and is not intended to be limiting of the disclosure. As used in this disclosure and the appended claims, the singular forms "a," "an," and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. It should also be understood that the term "and/or" as used herein refers to and encompasses any and all possible combinations of one or more of the associated listed items.

It will be understood that, although the terms first, second, etc. may be used herein to describe various information, these information should not be limited by these terms, but should not be construed as indicating or implying relative importance. These terms are only used to distinguish one type of information from another. For example, first information may also be referred to as second information, and similarly, second information may also be referred to as first information, without departing from the scope of the present disclosure. The word "if" as used herein may be interpreted as "at … …" or "when … …" or "in response to a determination", depending on the context.

In the description of the present invention, unless otherwise specified and limited, it is to be noted that the terms "mounted," "connected," and "connected" are used in a broad sense, and for example, they may be mechanically connected, they may be connected through the inside of two elements, they may be directly connected, they may be indirectly connected through an intermediate, and those skilled in the art may understand the specific meaning of the above terms according to specific situations.

For better understanding of the technical solutions of the present invention, the following detailed description of the present invention is provided with reference to the accompanying drawings.

The invention provides a method for carrying and hoisting a regasification module of an LNG-FSRU ship, which specifically comprises the following steps:

and S1, connecting a lifting hook at a first position on the gantry crane with the rotary hanging row, connecting the rotary hanging row with all upper hanging rings in the first group of hanging rings on the connecting stay bar, and connecting all lower hanging rings in the first group of hanging rings on the connecting stay bar with the M1 module of the regasification module.

In this embodiment, the gantry crane 9 is provided with three hooks, which are 1# hook, 2# hook and 3# hook, the hook at the first position is 1# hook and 2# hook, the hook at the second position is 3# hook, the maximum hoisting capacities of the 1# hook, the 2# hook and the 3# hook are 300t, 300t and 350t, the maximum allowed ton head of the 1# hook and the 2# hook is 100t, and the maximum turning weight of the gantry crane 9 is 600 t.

The rotary hanger row is an electric rotary hanger row capable of horizontally rotating, and the maximum load of the rotary hanger row is not less than 550 t. Specifically, the rotary hanging row is composed of a hanging beam 14 and a hanging row 15 arranged below the hanging beam 14, the hanging beam 14 is connected with the hanging row 15 through a vertically arranged connecting rod, and the hanging row 15 can rotate in the horizontal direction.

The connecting stay bar 16 is a rectangular frame structure consisting of straight bars which are staggered transversely and longitudinally, the maximum load of the connecting stay bar is not less than 500t, and the connecting stay bar is used for ensuring that a steel wire rope is perpendicular to the M1 module 17 or the M3 module 18 in the hoisting process. Hanging rings are fixed above and below the connecting part between each longitudinal rod and each cross rod, as shown in fig. 1 and 2, eight groups of hanging rings which are hanging rings 1-8 are arranged on the connecting brace 16, wherein the hanging

rings

1, 4, 5 and 8 arranged at the four corners of the rectangular frame form a first group of hanging rings, and the hanging

rings

2, 3, 6 and 7 arranged on the edges of the rectangular frame form a second group of hanging rings.

The lifting hooks No. 1 and No. 2 of the gantry crane 9 are connected with a lifting beam 14 of a rotary lifting row through a steel wire rope, the lifting beam 14 and the lifting row 15 of the rotary lifting row are connected with a lifting ring 1, a lifting ring 4, a lifting ring 5 and an upper lifting ring of the lifting ring 8 which are connected with a support rod 16 through the steel wire rope, the lifting ring 1, the lifting ring 4, the lifting ring 5 and a lower lifting ring of the lifting ring 8 are connected with an M1 module through the steel wire rope, wherein the lifting ring 1 and the lower lifting ring of the lifting ring 8 are correspondingly connected with a bow of the M1 module, and the lifting ring 4 and the lower lifting ring of the lifting ring 5 are correspondingly connected with a stern of the M1 module.

And S2, connecting a lifting hook at a second position on the gantry crane 9 with an upper lifting ring positioned on the port side in the first group of lifting rings on the connecting stay 16, namely connecting a 3# lifting hook of the gantry crane 9 with the lifting ring 5 of the connecting stay 16 and the upper lifting ring of the lifting ring 8 through a steel wire rope to solve the problem of eccentricity of the M1 module (the gravity center of the M1 module is deviated to the right port side).

And S3, starting the gantry crane 9 to hoist the M1 module 17 of the regasification module to a target position.

Specifically, the gantry crane 9 is started to lift the M1 module 17 to a position with a first height from the ground, and safety inspection is performed, wherein the first height is 500mm from the ground in the embodiment;

after the safety inspection is correct, the M1 module 17 is continuously hoisted, and in the whole hoisting process, the lifting hook (3# lifting hook) at the second position on the gantry crane 9 is used for adjusting the internal and external horizontal states of the M1 module or the M3 module. In the whole hoisting process, the tonnage of the 3# lifting hook is kept within 50 t.

After the M1 module 17 is hoisted to the right position, the M1 module 17 is horizontally rotated by the rotary hoisting bar 15, namely the rotary hoisting bar is horizontally rotated, the rotary hoisting bar 15 drives the M1 module 17 to rotate in the horizontal direction, so that an included angle of 16 degrees is formed between the M1 module 17 and the center line of a ship body, then the gantry crane 9 releases the hook to place the M1 module 17 in place, and the carrying of the M1 module 17 is finished.

S4, connecting a lifting hook at a first position on the gantry crane 9 with the rotary hanging bar 15, connecting the rotary hanging bar 15 with all upper hanging rings in the second group of hanging rings on the connecting stay bar 16, and connecting all lower hanging rings in the second group of hanging rings on the connecting stay bar 16 with the M3 module 18 of the regasification module.

Specifically, 1# and 2# lifting hooks of a gantry crane 9 are connected with a lifting beam 14 of a rotary lifting row through steel wire ropes, the lifting beam 14 and the lifting row 15 of the rotary lifting row are connected with a lifting ring 2, a lifting ring 3, a lifting ring 6 and an upper lifting ring of the lifting ring 7 which are connected with a support rod 16 through the steel wire ropes, the lifting ring 2, the lifting ring 3, the lifting ring 6 and a lower lifting ring of the lifting ring 7 are connected with an M3 module 18 through the steel wire ropes, wherein the lifting ring 2 and the lower lifting ring of the lifting ring 7 are correspondingly connected with a bow of the M3 module, and the lifting ring 3 and the lower lifting ring of the lifting ring 6 are correspondingly connected with a stern of the M3 module.

And S5, connecting a lifting hook at a second position on the gantry crane 9 with an upper lifting ring positioned on the starboard side in a second group of lifting rings on the connecting support rod 16.

Specifically, a 3# lifting hook of the gantry crane 9 is connected with a lifting ring 2 of a connecting stay 16 and an upper opening lifting ring of the lifting ring 3 through a steel wire rope so as to solve the problem of eccentricity of the M3 module (the gravity center of the M3 module is deviated to the port side).

And S6, starting the gantry crane 9 to hoist the M3 module 18 of the regasification module to a target position.

Specifically, the gantry crane 9 is started to hoist the M3 module 18 to a position with a first height from the ground, and safety inspection is performed, wherein the first height is 500mm from the ground in the embodiment;

after the safety inspection is correct, the M3 module 18 is continuously hoisted, and in the whole hoisting process, the lifting hook (3# lifting hook) at the second position on the gantry crane 9 is used for adjusting the internal and external horizontal states of the M3 module 18. In the whole hoisting process, the tonnage of the 3# lifting hook is kept within 50 t.

After the module is lifted in place, the M3 module 18 is rotated by the rotary lifting row 15 to form an included angle of 16 degrees with the center line of the ship body, then the gantry crane 9 releases the hook to place the M3 module 18 in place, and the carrying of the M3 module is finished.

And lifting the M2 module of the regasification module to a target position by a conventional lifting method.

It should be understood that the described embodiments are only some embodiments of the invention, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Claims

1. A method for carrying and hoisting a regasification module of an LNG-FSRU ship is characterized by comprising the following steps:

2. The LNG-FSRU ship regasification module carrying hoisting method according to claim 1, wherein the connection stay bar is a rectangular frame structure composed of straight bars which are staggered transversely and longitudinally, hoisting rings are fixed above and below the connection part between each longitudinal bar and each cross bar, the first group of hoisting rings are hoisting rings arranged at four corners of the rectangular frame, and the second group of hoisting rings are hoisting rings arranged on the edges of the rectangular frame.

3. The LNG-FSRU ship regasification module onboard lifting method according to claim 2, wherein the maximum load of the connection stay is not less than 500 t.

4. The LNG-FSRU ship regasification module loading and hoisting method according to claim 1, wherein the step of hoisting the M1 module of the regasification module to the target position by the gantry crane is the same as the step of hoisting the M3 module of the regasification module to the target position by the gantry crane, and both the steps include:

5. The LNG-FSRU vessel regasification module onboard lifting method of claim 4, wherein the first height is 500mm from the ground.

6. The LNG-FSRU vessel regasification module loading and hoisting method according to claim 1, wherein the hook at the first position on the gantry crane is a # 1 and # 2 hook, and the hook at the second position is a # 3 hook.

7. The LNG-FSRU vessel regasification module carrying hoisting method according to claim 1, wherein the rotating slings are horizontally rotatable electric rotating slings, and the maximum load is not less than 550 t.

8. The LNG-FSRU ship regasification module carrying and hoisting method according to claim 1, wherein after the LNG-FSRU ship regasification module is hoisted in place, the M1 module and the M3 module form an included angle of 16 degrees with the center line of the ship body.