JP2562422C - - Google Patents

Description

Description: BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a marine hose for loading or unloading a fluid such as a crude oil from an oil tanker on land at sea, and more particularly to a marine hose for loading a fluid. The present invention relates to a marine hose that can effectively prevent fluid from leaking or flowing out of a hose body during loading or unloading. 2. Description of the Related Art Conventionally, when loading or unloading a fluid such as crude oil from an oil tanker on land at sea, a marine hose has been used. When the reinforcing layer is broken, there is a problem that the fluid flows out of the hose and causes great environmental pollution. In order to prevent such environmental pollution due to fluid outflow, a hose having a function of detecting when the inner surface of the hose and the reinforcing layer are broken has been proposed. For example, JP-A-54-163423, JP-A-55-33946 and JP-A-1-269785 disclose leaked fluid to the end of a hose through a passage provided outside the hose body. The leak is guided to the provided leak detecting means, and the leak is notified by the radio wave transmitted by the leak detecting means or the swelling of the flexible bag which is the leak detecting means. [0004] In addition, a method of detecting a leak by transferring a leaked fluid from a hose end to a storage with a rubber hose (Japanese Patent Application Laid-Open No. 48-19279), a method of operating an alarm device such as a lamp or a bell (Japanese Patent Application Laid-Open No. JP-A-54-69822 and JP-A-58-174784), a method of detecting the swelling of a hose due to the pressure of a leaked fluid (JP-A-58-17)
No. 4785) has been proposed. These prevent the fluid from leaking out of the hose by a skin or a lining rubber layer provided outside the hose body. [0005] However, the conventional detection method is configured to detect a part or the whole of a hose when the hose is inflated by a fluid, or to detect a leak of radio waves. In the former case, part or all of the hose swelled by the waves is hidden, such as when the sea is rough and the waves are high, in the former case. However, in the latter case, it is difficult to perform reliable detection due to damage to equipment and the like, and there is a problem that the structure becomes complicated and expensive. Was. Therefore, the inventors of the present application examined various methods for visually confirming the abnormality of the marine hose, and found that the abnormality and the swelling of the hose at the end of the hose were not detected.
I have found that it is more reliable to detect a situation where the center or the whole of the hose is sunk (a state of reduced freeboard) than other hoses connected next to it. [0007] That is, when the hose, which normally floats on the sea under normal conditions, sinks in seawater when it is abnormal, and cannot be confirmed, it is more difficult to confirm the extent to which part or all of the hose is swollen. It can be confirmed easily and accurately. The present invention
This is based on the above findings. The present invention has been devised in view of such a conventional problem, and when a fluid leaks from a marine hose, the leak can be easily detected and the fluid is prevented from flowing out of the hose. It is another object of the present invention to provide a marine hose that effectively prevents environmental pollution. [0008] In order to achieve the above object, the present invention provides a hose body (A) having an inner rubber layer (1), a reinforcing layer (2) and a cover rubber layer (3) laminated thereon. Outside, buoyancy layer (10) and outer rubber layer (11)
A marine hose having a effluent barrier layer (5) between the hose body (A) and the buoyancy material layer (10), and a reinforcement laminated outside the effluent fluid barrier layer (5). layer
(6), an outflow fluid barrier layer (5) and a hose body (A), and the reinforcing layer
(6) forming an outflow fluid absorbing layer (4) sealed with an end leakage prevention wire (9) wound on the end of the outflow fluid absorbing layer (4), and the outflow fluid absorbing layer (4). Is it inside the hose
The marine hose leaking fluid sinks into the seawater, and another marine hose connected adjacently
Can absorb spilled fluid so that it can be seen that it is submerged more than phosphorus hose
The point is to have a space capacity . The reinforcing layer (6) is laminated on the outflow fluid barrier layer (5) and has a strength enough to resist the pressure of the outflow fluid, and the outflow fluid absorption layer (4) is also affected by the pressure of the outflow fluid. It is preferable that the marine hose is configured so as not to swell and retain the original shape of the marine hose. Furthermore, on the outer periphery of the end fitting inserted into the end of the hose body (A), the end of the outflow fluid barrier layer (5) and the end of the inner rubber layer (1) are in close contact over the entire circumference, In addition, the outer periphery of the end fitting inserted into the end of the hose body (A) and the outflow fluid barrier layer
It is preferable that the end of (5) is in close contact with the entire circumference, and the outer periphery of the end fitting and the end of the inner rubber layer (1) are in close contact with the entire circumference. The end leakage prevention wire (9) has a stacked outflow fluid barrier layer (5) and a reinforcing layer (6) such that the outflow fluid is completely retained and sealed in the outflow fluid absorption layer (4). It is wound tightly on Further, the hose of the present invention, the dimensions and structure of the hose cross section varies depending on the required fluid transport volume and transport pressure, etc.
The outflow fluid is such that the space formed by the open-cell sponge can be visually recognized that the marine hose leaking from the hose body is sinking from the adjacent marine hose in the prescribed hose cross-sectional dimensions and structure. It is a preferable embodiment that the space is capable of absorbing air. In a preferred embodiment, the buoyant material is provided so that the outflow fluid absorbing layer (4) forms a space, and the space is equivalent to the above. Furthermore, on the outer periphery of the end fitting (8) inserted into the end of the hose body (A) so as to form a container sealed with the outflow fluid barrier layer (5) and the inner rubber layer (1). The fact that the end of the outflow fluid barrier layer (5) and the end of the inner rubber layer (1) are in close contact over the entire circumference means that oil or other fluid leaked from the hose body (A) does not leak to the sea or the like. In a preferred form, the effluent fluid barrier layer (5), end fittings (8) and inner rubber layer (1)
As a result, the end of the outflow fluid barrier layer (5) and the outer periphery of the end fitting (8) are in close contact with each other over the entire periphery, so that the outer periphery of the end fitting and the inner rubber layer (1) are formed. It is also preferable that the end of ()) is in close contact over the entire circumference so that fluid such as oil leaked from the hose body (A) does not leak to the sea or the like. The present invention is configured as described above. When the inner surface of the hose and the reinforcing layer break and the fluid leaks, the leaked fluid is absorbed by the outflow fluid absorbing layer, and the absorbed fluid is the outflow fluid. Due to the action of the barrier layer (5) and the end leakage prevention wire (9), it stays in a completely sealed state in the outflow fluid absorbing layer, and does not flow out of the absorbing layer. Further, the space of the outflow fluid absorbing layer has a volume capable of absorbing the outflow fluid such that the marine hose leaking the fluid can be visually recognized as sinking from another marine hose connected adjacently. Due to the function of the reinforcing layer having the structure that does not substantially expand due to the pressure of the outflow fluid, the increase in the volume due to the pressure of the outflow fluid hardly occurs. As a result, the hose weight increases without changing the outer diameter of the marine hose, and the hose line shape changes when the fluid leaking part sinks in the sea, thereby easily detecting hose abnormalities even from the outside. Is what you can do. When the outflow fluid absorption layer (4) is made of open-cell sponge, the fluid permeates into each cell of the sponge, so that the required space capacity can be secured even if the outflow fluid absorption layer is not so thick. . When the outflow fluid absorbing layer (4) is made of a buoyant material, a necessary space capacity can be secured by arranging the buoyant materials at appropriate intervals. When the end of the outflow fluid barrier layer and the end of the inner rubber layer are in close contact with each other over the entire periphery of the end fitting, a bag sealed with the outflow fluid barrier layer and the inner rubber layer is formed. Therefore, it is possible to more reliably prevent the outflow fluid from being sealed therein and leaking out of the hose. In some cases, the end of the outflow fluid barrier layer (5) and the outer periphery of the end fitting (8) adhere over the entire periphery, and the outer periphery of the end fitting and the end of the inner rubber layer (1) adhere over the entire periphery. Since the spilled fluid barrier layer (5), the end fittings (8) and the inner rubber layer (1) form a sealed bag, the spilled fluid is sealed therein and leaks out of the hose. It can be prevented more reliably. Since the outflow fluid absorbing layer is in a sealed state in any case, the air existing in the absorbing layer is also sealed, but since the pressure of the outflow fluid is considerably higher than that of air, The air is compressed and does not significantly interfere with fluid absorption. Embodiments of the present invention will be described below with reference to the accompanying drawings. FIG. 1 is a partial cross-sectional view of a marine hose embodying the present invention, 1 is an inner rubber layer made of oil-resistant rubber, 2 is a reinforcing layer made of a reinforcing cord and rubber, 3 is a rubber layer 3a having a reinforcing wire 3b. 2 shows a buried cover rubber layer. An outflow fluid absorption layer 4 is formed outside the cover rubber layer 3, and the outflow fluid absorption layer 4 is made of a member having a very light specific gravity, for example, a buoyant material having an open-cell sponge or a space. If the inner rubber layer 1 is broken and the fluid penetrates through the reinforcing layer 2 and the cover rubber layer 3, the outflow fluid absorbing layer 4 acts as a fluid tank and absorbs the outflow fluid. On the outside of the outflow fluid absorbing layer 4, an outflow fluid barrier layer 5, a reinforcing layer 6, and a cover rubber layer 7 are sequentially laminated and integrally formed, and further inserted into the end of the hose body. An end leakage prevention wire 9 is provided on the outer periphery of the flange 8 to prevent the outflow fluid stored in the outflow fluid absorption layer 4 from leaking. In the case of a floating hose, a buoyancy material layer 10 and an outer rubber layer 11 are provided on the outer periphery of the cover rubber layer 7 as shown in the figure. The outflow fluid absorbing layer 4 protects the outflow fluid by an outflow fluid barrier layer 5, and the reinforcing layer 6 withstands the inflation pressure of the outflow fluid stored in the outflow fluid absorption layer 4, and has an end leakage prevention wire. 9 prevents leakage of the outflow fluid from the end of the hose body (A) and the outflow fluid absorption layer 4. In the case of an under buoy hose, the cover rubber layer 7 simultaneously plays the role of an outer rubber layer. Next, the operation of the marine hose body as described above will be described. In the case where the inner rubber layer and the reinforcing layer of the hose are broken for some reason and the fluid leaks, the outflow fluid absorbing layer 4 absorbs the outflow fluid. Hold. Then, the weight of the hose body increases more than usual, and the outflow fluid barrier layer 5 holds the outflow fluid, and the reinforcing layer 6 can withstand the expansion of the outflow fluid. Without flowing out of the marine hose, the hose line shape changes due to the increase in the weight of the hose body. That is, in the case of a floating hose, when a marine hose sinks in the sea due to an increase in weight, an abnormality in the hose body, that is, leakage of fluid can be easily visually detected. In addition, a remarkable line shape occurs in the under buoy hose, which can be easily detected by an underwater monitoring system, a diver check, or the like. As a result, it is possible to quickly and easily detect the occurrence of an abnormality in the hose body, and to effectively prevent environmental pollution due to fluid outflow. According to the present invention, as described above, the outflow fluid barrier layer (5) and the outflow fluid barrier layer (5) are provided between the hose body (A) and the buoyancy material layer (10). A reinforcing layer (6) laminated on the outside of the
The effluent fluid which is surrounded by the effluent fluid barrier layer (5) and the hose body (A) and sealed by the end leakage prevention wire (9) wound on the end of the reinforcing layer (6) leaks. And an outflow fluid absorption layer (4) that does not flow from the inside of the hose.
Leaked marine hose sinks in seawater, and another marine hose connected
A space that can absorb the outflow fluid to the extent that it can be seen submerged more than
Since it was configured to have a volume, if there was fluid leakage in the hose body (A),
Rather than detecting the change in the outer diameter of each marine hose, it can be easily detected by the change in the shape of the hose line, preventing the fluid from flowing out of the hose and effectively preventing environmental pollution. This has the effect of being able to detect abnormalities in the hose body with a simple structure. Particularly, in a hose line composed of a large number of marine hoses, it is visually recognized that a marine hose leaking fluid from the hose body sinks below other normal marine hoses. Fluid leakage can be detected much more easily and reliably than conventional ones. In other words, when the hose that is floating on the sea in the normal state becomes submerged in the seawater at the time of abnormality and cannot be confirmed (the state of reduced freeboard), a part of the hose as in the past or This is easier and more accurate than checking the degree to which everything is inflated. Moreover, since the outflow fluid absorbing layer is sealed and the reinforcing layer and the outflow fluid barrier layer do not expand due to the pressure of the outflow fluid, the fluid is completely prevented from flowing out of the outflow fluid absorption layer, and Little increase in volume of the fluid barrier layer occurs.

[Brief description of the drawings]     FIG. FIG. 1 is a partial sectional view of a marine hose embodying the present invention.     [Explanation of symbols]       1 inner rubber layer 2 reinforcement layer       3 Cover rubber layer 3a Rubber layer     3b Reinforcing wire 4 Outflow fluid absorption layer       5 Outflow fluid barrier layer 6 Reinforcement layer       7 Cover rubber layer 8 Flange       9 End leakage prevention wire 10 Buoyancy material layer     11 Outer rubber layer A Hose body

Claims (1)

Claims: 1. A buoyancy material layer (10) and an outer layer outside a hose body (A) in which an inner rubber layer (1), a reinforcing layer (2) and a cover rubber layer (3) are laminated. In a marine hose in which a rubber layer (11) is laminated, an outflow fluid barrier layer (5) and an outside of the outflow fluid barrier layer (5) are provided between the hose body (A) and the buoyancy material layer (10). Reinforcing layer (6) and outflow fluid barrier layer (5)
And a hose body (A) and sealed with an end leakage prevention wire (9) wound around the end of the reinforcing layer (6) so that the outflow fluid absorbing layer (4) does not leak out. ), And the outflow fluid absorbing layer (4) is a marine in which fluid is leaking from the inside of the hose.
The hose sinks in the seawater and sinks below other marine hoses connected adjacently
A marine hose having a space capacity capable of absorbing an outflow fluid to such an extent that a resident state can be visually recognized. 2. The outflow fluid absorbing layer (4) can absorb outflow fluid to such an extent that the leaking marine hose is sinking down from another marine hose connected adjacently. The marine hose according to claim 1, comprising a continuous foam sponge having a space. 3. The outflow fluid absorbing layer (4) has a buoyancy material and an outflow that allows the marine hose leaking fluid to be visually recognized as sinking from another marine hose connected adjacently. The marine hose according to claim 1, comprising a space capable of absorbing a fluid. 4. The reinforcing layer (6) is laminated on the outflow fluid barrier layer (5) and has a strength enough to withstand the pressure of the outflow fluid, and the outflow fluid absorption layer (5) is also provided by the pressure of the outflow fluid. The marine hose according to claim 1, wherein the marine hose is configured so that the original shape of the marine hose can be maintained without swelling. 5. An end of an outflow fluid barrier layer (5) and an end of an inner rubber layer (1) are in close contact over the entire circumference on the outer periphery of an end fitting inserted into the end of the hose body (A). The marine hose according to claim 1, wherein the marine hose is provided. 6. The outer periphery of the end fitting inserted into the end of the hose body (A) and the end of the outflow fluid barrier layer (5) are in close contact over the entire periphery, and the outer periphery of the end fitting and the inner rubber layer (5) are provided. 4. The marine hose according to claim 1, wherein the end of (1) is in close contact over the entire circumference.