CN213535043U

CN213535043U - Novel shallow water simple pipe laying ship

Info

Publication number: CN213535043U
Application number: CN202022310025.5U
Authority: CN
Inventors: 王胜; 王鑫; 金鑫; 侯晓蕊; 宋国向; 李运霞; 王佳乐; 包海军
Original assignee: Zhuhai Paiao Ocean Engineering Co ltd
Current assignee: Zhuhai Paiao Ocean Engineering Co ltd
Priority date: 2020-10-16
Filing date: 2020-10-16
Publication date: 2021-06-25
Anticipated expiration: 2030-10-16

Abstract

The utility model discloses a novel shallow water simple and easy pipe laying ship. The ship body of the utility model consists of two barges which are suitable for the river channel; the connection truss between the ship bodies is formed by welding steel pipes, the two small barges are fixed together in a welding or bolt connection mode, and the lower parts of the connection truss between the ship bodies, namely the two barges are used for lifting, butting and lowering pipelines; the main suspension arms are positioned at two ends of a connecting truss between the ship bodies and are used for hoisting and lowering underwater pipelines; the operation platform is built by a scaffold worker between ship bodies and is mainly used for welding, inspection and joint corrosion prevention. The utility model discloses can accomplish the butt joint operation of river course pipeline high-efficiently, have that the time limit for a project is short, the expense is low, efficient, do not destroy hydrographic landform, do not influence advantages such as normal navigation.

Description

Novel shallow water simple pipe laying ship

Technical Field

The utility model relates to a water drainage pipeline technical field is carried, is got to oil and liquefied natural gas in the river course, and more specifically the utility model relates to a novel shallow water is simply layed pipe ship.

Background

Pipe butt joining refers to joining individual pipe sections into a continuous piece of pipe. Pipes made of different materials need different connection methods, and three connection modes, namely a mechanical joint, welding and a flange, are adopted, and are usually connected in a welding mode. The pipelines in the deepwater area often need to be butted underwater, and the common underwater welding forms include wet welding, local dry welding, dry welding and the like. The underwater welding needs to be equipped with excellent underwater welding workers, sealed cabins and other equipment, and in addition, an underwater mechanical butt joint device can be adopted for butt joint, such as saturated diving, non-submersible butt joint controlled by an ROV (remote operated vehicle), and the like.

The butt joint mode is mainly used for submarine pipelines in deep water, and for landing pipelines in shallow water, butt joint operation can be completed on the water surface, namely, pipes on two sides are lifted above the water surface, and the pipes are sunk to the seabed after connection. In the common water surface butt joint, a marine pipe is lifted to a certain distance above the water surface through an operation ship board, a scaffold is built on the ship side by a scaffold worker, a welding, inspection and anticorrosion operation platform is built, and the marine pipe is transferred outside and put down after the butt joint operation is completed.

The ship side butt joint pipeline has high requirement on ship stability, the method can be well suitable for operation in shallow water areas near the coast section, and the limit on the pipeline butt joint operation in the river channel is large due to certain limit on the draught depth. In the pipeline butt joint construction in traditional river course, because rivers are great in the river course, adopt traditional cofferdam to cut dam formation trunk room and carry out the pipeline butt joint usually, need fully to do measures such as river course water conservancy diversion, dam internal drainage, cofferdam are beaten and are established and demolish, and the construction degree of difficulty is big, the period of construction is long, occupy the channel time for a long time, economic cost is high, the safety risk is high, the place clearance restores the degree of difficulty big and is difficult to avoid to the destruction of hydrology landform etc..

SUMMERY OF THE UTILITY MODEL

The utility model aims at solving the problem of limited draught of ships in order to better adapt to the butt joint of shallow water pipelines in river channels, and the provided novel shallow water simple pipe laying ship.

The utility model relates to a novel shallow water simple pipe laying ship, which comprises a ship body, a truss connected between the ship bodies, a main suspension arm, a hoisting device and an operating platform; the ship body consists of two barges which are suitable for a river channel; the connection truss between the ship bodies is formed by welding steel pipes, the two small barges are fixed together in a welding or bolt connection mode, and the lower parts of the connection truss between the ship bodies, namely the two barges are used for lifting, butting and lowering pipelines; the main suspension arms are positioned at two ends of a connecting truss between the ship bodies and are used for hoisting and lowering underwater pipelines; the hoisting equipment is a winch or a winch used for lifting and lowering the pipeline; the operation platform is built by a scaffold worker between ship bodies and is mainly used for welding, inspection and joint corrosion prevention.

The beneficial effects of the utility model are specifically as follows:

the utility model discloses the barge that the device chose for use is adapted to the river course, and the tonnage is little, and the draft is shallow, can accomplish the butt joint operation of river course pipeline high-efficiently, has that the time limit for a project is short, the expense is low, efficient, do not destroy hydrographic landform, do not influence advantages such as normal navigation.

Drawings

FIG. 1 is a top view of the structure of the device of the present invention;

FIG. 2 is a front view of the structure of the device of the present invention;

fig. 3 is a side view of the structure of the device of the present invention.

Detailed Description

The device of the present invention will be further described with reference to the accompanying drawings.

As shown in fig. 1, 2 and 3, the present invention mainly comprises a hull, a connecting truss 3 between hulls, a main suspension arm 4, a lifting device and an operation platform, wherein the hull is composed of two barges 1 and two barges 2 adapted to the river; the connecting truss between the ship bodies is formed by welding steel pipes, and the left side and the right side of the bottom end of the connecting truss between the ship bodies are used for fixing two small barges together in a welding or bolt connection mode respectively; the main suspension arms are respectively arranged at the front end and the rear end of the connecting truss between the ship bodies; a lifting point is arranged on the connecting truss between the ship bodies, and a lifting belt is arranged at the lifting point and is connected with lifting equipment; the hoisting equipment is arranged on a barge deck; the operation platform is built between two small barges and is used for welding, inspection and joint corrosion prevention.

The utility model discloses the use of device is as follows:

(1) barge type selection: according to project characteristics and hydrological characteristics, parameters such as required barge size, draft and load are determined, and the barge is selected.

(2) Manufacturing a hull connecting truss and a main suspension arm: according to the size and the structural characteristics of the selected barge, parameters such as the pipe diameter, the wall thickness, the counterweight layer, the operating water depth and the like of the butt joint pipeline are manufactured to form the connecting truss and the main suspension arm, and the connecting truss and the main suspension arm are assembled on the barge after the manufacture is finished.

(3) Installing hoisting equipment: according to the operation demand, suitable hoisting equipment such as a winch, a winch and a chain block is equipped to meet the operations of hoisting and lowering the pipeline, aligning the pipeline and the like.

(4) Calculating and analyzing: barge anchoring analysis, stress and strength analysis of a ship crane in the pipe lifting and butting processes, and stress and strength analysis of a pipeline in the pipe lifting and butting processes.

(5) Preparing auxiliary equipment: wire rope, shackle, suspender, floating bag, ship positioning system, diving equipment, welding equipment, inspection equipment, coating equipment, scaffold frame etc.

(6) Butt joint operation: the barge is put in place above the abandoned pipe end socket under the assistance of the positioning system, a diver carries out underwater probing and installs a guide rope at the pipe end, the diver installs a hanging strip at the designed hoisting point and is connected with a winch steel wire rope, as shown in figure 1, the winch is started to respectively lift the first pipeline 5 and the second pipeline 6 to the position above the water surface, a scaffold is built to establish a welding, inspection and anticorrosion operation platform, redundant pipelines are cut to carry out butt welding, the operation platform is dismantled, the pipelines are lowered, and the diver checks the state of the pipelines and the like.

The above-mentioned embodiments are merely descriptions of the preferred embodiments of the present device, and do not limit the concept and scope of the present device, and various modifications and improvements made to the technical solutions of the present device by those skilled in the art without departing from the design concept of the present device shall fall within the protection scope of the present device.

Claims

1. The utility model provides a novel shallow water simple and easy pipelaying ship, characterized by: the device comprises a ship body, a connecting truss between the ship bodies, a main suspension arm, a hoisting device and an operating platform; the ship body consists of two barges which are suitable for a river channel; the connecting truss between the ship bodies is formed by welding steel pipes, and the left side and the right side of the bottom end of the connecting truss between the ship bodies are used for fixing two small barges together in a welding or bolt connection mode respectively; the main suspension arms are respectively arranged at the front end and the rear end of the connecting truss between the ship bodies; a lifting point is arranged on the connecting truss between the ship bodies, and a lifting belt is arranged at the lifting point and is connected with lifting equipment; the hoisting equipment is arranged on a barge deck; the operation platform is built between two small barges and is used for welding, inspection and joint corrosion prevention.

2. The novel shallow water simple pipelay vessel of claim 1, characterized in that: a plurality of hoisting points are arranged on the connecting truss between the ship bodies so as to facilitate the butt joint operation of pipelines.

3. The novel shallow water simple pipelay vessel of claim 1, characterized in that: the hoisting equipment is a winch or a winch used for lifting and lowering the pipeline.