WO2019041456A1

WO2019041456A1 - Method for detecting structure of cargo oil tank of ship

Info

Publication number: WO2019041456A1
Application number: PCT/CN2017/105972
Authority: WO
Inventors: 薛林; 周静
Original assignee: 广船国际有限公司
Priority date: 2017-08-29
Filing date: 2017-10-13
Publication date: 2019-03-07
Also published as: CN107521620A; CN107521620B

Abstract

Disclosed is a method for detecting the structure of a cargo oil tank of a ship, comprising the steps as follows: step S10 of providing a raft (3) for carrying a detector; and step S20 of injecting water into the cargo oil tank (1), putting the raft (3), in which the detector is carried, into the cargo oil tank (1), moving the raft (3) to detect the inner structure of the cargo oil tank (1). The raft (3), in which the detector is carried, can be floated by means of water injection, and the location inside the cargo oil tank (1) can be detected by moving the raft (3). Meanwhile, the water level in the cargo oil tank (1) can also be raised as needed, and the rise of water level can achieve the detection of locations at different heights in the cargo oil tank (1). The detection difficulty is reduced, and the structural state of the cargo oil tank (1) can be checked to the maximum extent, that is, the inspection is performed without a dead angle, and the inspection efficiency is improved.

Description

Ship cargo tank structure inspection method

Technical field

The invention belongs to the technical field of ship manufacturing, and particularly relates to a method for testing the structure of a cargo tank of a ship.

Background technique

After a certain period of operation of the ship, it is necessary to inspect the structure of the ship by the classification society to observe the damaged state of the ship structure. For large or very large tankers, a critical inspection of their cargo tanks is required. At present, the inspection of cargo tanks of ships generally adopts the following methods: When the ship is manufactured, the inspection channel is set in advance in the cargo oil tank. When the structure of the cargo oil tank needs to be inspected, the inspector walks on the inspection channel for inspection. The prior art has the following defects: (1) For large or very large oil tankers, the number of cargo tanks is particularly large, the inspector needs to climb the cabin, and the labor intensity is high; (2) the height direction of the cargo tank, the inspection passage Generally, it is set every 6m, so the inspector cannot check the components of all positions of the cargo hold on the detection channel, and there is a dead angle.

Summary of the invention

The object of the present invention is to provide a method for inspecting the structure of a cargo tank of a ship, which is convenient to operate and has no dead angle, which can reduce the labor intensity of the inspector and improve the inspection speed.

In order to achieve the above object, the present invention adopts the following technical solutions:

A method for inspecting a cargo tank structure of a ship is provided, comprising the following steps:

Step S10, providing a skin defect for carrying an inspector;

Step S20, watering the cargo oil tank, placing the leather jacket carrying the inspector into the cargo oil tank, and moving the leather jacket to inspect the internal structure of the cargo oil tank.

As a preferred solution for the inspection method of the cargo tank structure of the ship, the step S20 specifically includes the following steps:

Step S201, performing the first water injection on the cargo oil tank, and the height of the water injection is based on a state in which the skin can be floated;

Step S202, placing the skin carrying the inspector into the cargo tank, moving the skin, and inspecting the first position of the cargo tank;

Step S203, performing a second water injection on the cargo tank, the height of the water injection is a first height, moving the skin, and inspecting the second position of the cargo tank, and repeating this step after the inspection is completed. Until the entire cargo tank is inspected.

Step S211, placing the skin carrying the inspector into the cargo tank, the inspector leaving the skin to inspect the first position of the cargo tank, after the inspection The inspector moves onto the skin;

Step S212, performing a first water injection on the cargo oil tank, the height of the water injection is a second height, moving the skin, and inspecting the second position of the cargo oil tank;

Step S213, performing a second water injection on the cargo tank, the height of the water injection is the second height, moving the skin, and inspecting the third position of the cargo tank, after the inspection is finished, repeating This step is completed until the entire cargo tank is inspected.

As a preferred aspect of the method for inspecting the cargo tank structure of the vessel, the first height matches the height of the inspector; and/or the second height matches the height of the inspector.

As a preferred embodiment of the method for inspecting the structure of a cargo tank of a ship, the skin is an inflatable raft.

As a preferred solution for the inspection method of the cargo tank structure of the ship, the cargo oil enters the skin Before the cabin, the skin is first deflated, and the skin is fed into the cargo tank through the compartment of the cargo tank, the skin is inflated and the rope is used A lifting device external to the cargo tank is connected, the inspector moves onto the skin, and the lifting device lifts the skin down to the bottom of the cargo tank.

As a preferred solution for the inspection method of the cargo tank structure of the ship, at least one electromagnetic component is installed on the outer periphery of the skin, and when the skin is moved to a position to be inspected, the electromagnetic component is energized, so that The skin is fixed to the inner wall of the cargo tank.

As a preferred solution of the cargo cargo tank structure inspection method, after step S20, step S30 is further provided: lifting the skin jacket and the inspector out of the cargo oil tank, and the cargo oil The tank is drained.

As a preferred solution for the inspection method of the cargo tank structure of the ship, the water level sensor is pre-positioned at a specified position before each water injection, and when water is injected to pass the water level sensor, the water injection is stopped, the inspection work is performed, and the water level is The sensor moves up to the next specified position.

As a preferred solution for the cargo cargo tank structure inspection method, an alarm is provided on the water level sensor, and the alarm is alarmed when water is injected to pass the water level sensor.

The invention has the beneficial effects that the skin of the carrying inspector can be floated by means of water injection, and the position of the cargo tank can be checked by moving the skin, and the water level in the cargo tank can be raised as needed to raise the water level. The position of different heights in the cargo tank can be inspected, the inspection difficulty is reduced, and the structural state of the cargo tank can be checked to the maximum extent, that is, the inspection has no dead angle and the inspection efficiency is improved.

DRAWINGS

The invention will now be described in further detail with reference to the drawings and embodiments.

Fig. 1 is a view showing the inspection state of a cargo tank of a ship of the present invention.

In the picture:

1, cargo oil tank; 2, cabin mouth; 3, skin sputum; 4, lifting device; 5, rope.

Detailed ways

The technical solutions of the embodiments of the present invention will be further described in detail below with reference to the accompanying drawings, and it is obvious that the described embodiments are only the present invention. Some embodiments, but not all of the embodiments. All other embodiments obtained by a person skilled in the art based on the embodiments of the present invention without creative efforts are within the scope of the present invention.

In the description of the present invention, the terms "connected", "connected", and "fixed" are to be understood broadly, and may be, for example, a fixed connection, a detachable connection, or an integral, unless otherwise specifically defined and defined. It can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, which can be the internal connection of two elements or the interaction of two elements. The specific meaning of the above terms in the present invention can be understood in a specific case by those skilled in the art.

As shown in FIG. 1 , in the embodiment, a method for inspecting a cargo tank structure of a ship of the present invention comprises the following steps:

Step S10, providing a skin defect 3 for carrying an inspector;

In step S20, the cargo tank 1 is filled with water, and the skin 3 carrying the inspector is placed in the cargo tank 1 to move the skin 3 to inspect the internal structure of the cargo tank 1.

By means of water injection, the carrying case 3 of the carrying inspector can float, and the moving skin can be inspected for the position in the cargo tank 1, and the water level in the cargo tank 1 can be raised as needed, and the lifting water level can be Inspection of different heights in the cargo tank 1 reduces the difficulty of inspection and maximizes Check the structural state of the cargo tank 1 to verify that there is no dead angle, which improves the inspection efficiency.

In a preferred embodiment of the present invention, step S20 specifically includes the following steps:

Step S201, the first water injection is performed on the cargo oil tank 1, and the height of the water injection is in a state in which the skin raft 3 can be floated;

Step S202, placing the leather jacket 3 carrying the inspector into the cargo oil tank 1, moving the leather jacket 3, and inspecting the first position of the cargo oil tank 1;

Step S203, performing a second water injection on the cargo tank 1, the height of the water injection is the first height, moving the skin raft 3, and inspecting the second position of the cargo oil tank 1, after the inspection is finished, repeating this step until the whole The cargo tanks 1 are all inspected.

In this embodiment, the first height matches the height of the inspector. By matching the first height of the water injection with the height of the inspector, the maximum range inspection can be carried out within the visual range of the inspector, and the number of water injections of the cargo tank 1 can be reduced, and the inspection efficiency can be improved.

In another preferred embodiment of the present invention, step S20 specifically includes the following steps:

Step S211, the skins 3 carrying the inspector are placed in the cargo oil tank 1, and the inspector leaves the skin to inspect the first position of the cargo oil tank 1. After the inspection, the inspector moves to the skin 3 ;

Step S212, performing the first water injection on the cargo tank 1, the height of the water injection is the second height, moving the leather raft 3, and inspecting the second position of the cargo oil tank 1;

Step S213, performing a second water injection on the cargo tank 1, the height of the water injection is the second height, moving the skin raft 3, and inspecting the third position of the cargo oil tank 1, after the inspection is finished, repeating this step until the whole The cargo tanks 1 are all inspected.

In this embodiment, the second height matches the height of the inspector. By matching the second height of the water injection with the height of the inspector, the maximum range inspection can be carried out within the visual range of the inspector, and the number of water injections of the cargo tank 1 can be reduced, and the inspection efficiency can be improved.

In yet another preferred embodiment of the invention, the skin 3 is an inflatable raft.

In the present embodiment, before the skin 3 enters the cargo tank 1, the skin 3 is deflated, and then the skin 3 is fed into the cargo tank 1 through the compartment 2 of the cargo tank 1, The crucible 3 is inflated and connected to the lifting device 4 outside the cargo oil tank 1 by means of the rope 5, the inspector moves to the skin 3, and the lifting device 4 lifts the skin 3 down to the bottom of the cargo tank 1. When the ship is designed, the cabin opening 2 of the cargo tank 1 is sometimes small, and the skin jacket 3 cannot be used in the state of use. Therefore, the skin jacket 3 is set as an inflatable raft, and deflated before entering the cargo tank 1 The volume is reduced, and it is inflated after entering the cargo tank 1, so that it can be used for the cabin opening 2 of various sizes.

After the inspection, the lifting device 4 lifts the skin 3 to the cabin opening 2, the inspector uses the rope 5 to insure himself, and then deflates the skin 3, and then removes from the cabin opening 2 after the contraction, the lifting device 4 The inspector is then hoisted out of the cargo tank 1 .

In an embodiment of the invention, at least one electromagnetic component is mounted on the outer periphery of the skin 3, and when the skin 3 is moved to the position to be inspected, the electromagnetic component is energized to fix the skin 3 to the cargo tank 1. Inner wall. The electromagnetic component is arranged, and the electromagnetic component can be used to fix the skin 3 to the inner wall of the cargo oil tank 1, thereby reducing the shaking of the skin 3, and the operation of the inspector can be made safer.

In the present embodiment, step S30 is further provided after step S20: the skins 3 and the inspector are lifted out of the cargo oil tank 1 to drain the cargo oil tank 1.

In another embodiment of the present invention, the water level sensor is placed in advance at a specified position before each water injection, and when the water is poured to the water level sensor, the water injection is stopped, the inspection work is performed, and the water level sensor is moved up to the next designation. position. By setting the water level sensor, it is convenient to control the position of the water injection to prevent the water level of the water injection from flowing over the untested position, further preventing the leak detection.

In this embodiment, an alarm is provided on the water level sensor, and the alarm is alarmed when water is injected to overflow the water level sensor. By setting the alarm, it is more convenient to know the state of water injection, without the inspector Pay attention to the water level.

In the description of the specification, the description of the terms "an embodiment", "an example" or the like means that a specific feature, structure, material or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. in. In the present specification, the schematic representation of the above terms does not necessarily mean the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in a suitable manner in any one or more embodiments or examples.

The technical principles of the present invention have been described above in connection with specific embodiments. The descriptions are merely illustrative of the principles of the invention and are not to be construed as limiting the scope of the invention. Based on the explanation herein, those skilled in the art can devise various other embodiments of the present invention without departing from the scope of the invention.

Claims

A method for inspecting a cargo tank structure of a ship, characterized in that it comprises the following steps:

Step S10, providing a skin defect for carrying an inspector;

Step S20, watering the cargo oil tank, placing the leather jacket carrying the inspector into the cargo oil tank, and moving the leather jacket to inspect the internal structure of the cargo oil tank.
The method for inspecting a cargo tank structure of a ship according to claim 1, wherein the step S20 specifically comprises the following steps:

Step S201, performing the first water injection on the cargo oil tank, and the height of the water injection is based on a state in which the skin can be floated;

Step S202, placing the skin carrying the inspector into the cargo tank, moving the skin, and inspecting the first position of the cargo tank;

Step S203, performing a second water injection on the cargo tank, the height of the water injection is a first height, moving the skin, and inspecting the second position of the cargo tank, and repeating this step after the inspection is completed. Until the entire cargo tank is inspected.
The method for inspecting a cargo tank structure of a ship according to claim 1, wherein the step S20 specifically comprises the following steps:

Step S211, placing the skin carrying the inspector into the cargo tank, the inspector leaving the skin to inspect the first position of the cargo tank, after the inspection The inspector moves onto the skin;

Step S212, performing a first water injection on the cargo oil tank, the height of the water injection is a second height, moving the skin, and inspecting the second position of the cargo oil tank;

Step S213, performing a second water injection on the cargo tank, the height of the water injection is the second height, moving the skin, and inspecting the third position of the cargo tank, after the inspection is finished, repeating This step is completed until the entire cargo tank is inspected.
The method for inspecting a cargo tank structure of a ship according to claim 2 or 3, wherein said first height matches an inspector's height; and/or said second height matches an inspector's height .
The method for inspecting a cargo tank structure of a ship according to any one of claims 1 to 3, wherein the skin is an inflatable bowl.
The method for inspecting a cargo tank structure of a ship according to claim 5, wherein the skin is deflated before the skin enters the cargo tank, and the skin is passed through the skin a compartment port of the cargo tank is fed into the cargo tank, the skin is inflated and connected to a lifting device external to the cargo tank by a rope, and the inspector moves to the skin And the lifting device lifts the skin to the bottom of the cargo tank.
The method for inspecting a cargo tank structure of a ship according to any one of claims 1 to 3, characterized in that at least one electromagnetic component is mounted on the outer periphery of the skin, when the skin is moved to a position requiring inspection And energizing the electromagnetic component to fix the skin to an inner wall of the cargo tank.
The method for inspecting a cargo tank structure of a ship according to any one of claims 1 to 3, further comprising step S30 after said step S20: lifting said skin jacket and said inspector to said Outside the cargo tank, the cargo tank is drained.
The method for inspecting a cargo tank structure of a ship according to any one of claims 1 to 3, characterized in that the water level sensor is placed in a predetermined position before each water injection, and the water injection is stopped when water is injected to pass the water level sensor. , perform inspection work and move the water level sensor up to the next specified position.
The method for inspecting a cargo tank structure of a ship according to claim 9, wherein an alarm is provided on the water level sensor, and the alarm is alarmed when water is injected to pass over the water level sensor.