JPH0763288A - Hose - Google Patents

Abstract

PURPOSE:To prevent fluid leakage when a part of the outside circumferential surface of a hole body is damaged by any external factor by making such damaged portion visually confirmable from the outside and repairing the hose body before any leakage may take place. CONSTITUTION:A cushioning part 14 composed of a sponge or the like is pre- impregnated with or added thereto a coloring material 15 of an augueous color or a pigment such as white (titanium oxide), yellow (first yellow), orange (chrome vermillion), and red (red oxide), and when the cover rubber layer 9 of the hose body 1 is damaged and a crack or the like is caused thereon by an external factor, or in other words, such as coming into contact with a ship, the damaged portion of the hose body 1 is visually confirmable from the outside by the color material 15 flowing out into the sea water.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a hose for transferring a fluid such as oil at sea, and more particularly, when a part of the outer peripheral surface of a hose body is damaged by contact with a ship or the like at sea, the portion of the hose body is damaged. It relates to a hose that can be visually confirmed.

[0002]

2. Description of the Related Art Conventionally, when a fluid such as petroleum is transferred between a tanker moored at sea and a tank on land, a hose line configured by connecting a large number of marine hoses of a predetermined length is used. ing. By the way, as a marine hose used in a hose line, for example, as shown in FIG. 3, it is configured so that mounting flanges 2 provided at both ends of a hose body 1 formed to have a predetermined length can be connected to each other. The hose body 1 includes a pressure-resistant cord layer 7 formed by laminating a plurality of cord layers 6 in which a reinforcing cord 4 such as a fiber cord or a steel cord is covered with a rubber 5 on a rubber tube layer 3 arranged in the innermost layer. Outside the pressure resistant cord layer 7,
The hose body 1 is prevented from being crushed by external pressure, and a cover rubber layer 9 is laminated via a reinforcing cord layer 8 that reinforces the pressure resistant cord layer 7.

Further, as shown in FIG. 4, a hose 1a with a fluid leak detection device (called a double carcass hose)
Is a pressure resistant cord layer 7 formed by laminating a plurality of cord layers 6 in which a reinforcing cord 4 is covered with rubber 5 on the outer side of a rubber tube layer 3a, a reinforcing cord layer 8, a sponge having open cells or closed cells, etc. The buffer layer 10, the carcass tube layer 11, and the carcass layer 12 are laminated, and the cover rubber layer 13 is laminated on the outer side thereof.

The mounting flange 2 is integrally provided with a ring portion 2b for mounting the hose body 1 along the circumferential direction of the outer peripheral surface of the cylindrical portion 2a. The hose body 1 and the mounting flange 2 are connected and joined together by the tightening wire 7a provided at the end portion of the pressure resistant cord layer 7 and the end wire 8a of the reinforcing cord layer 8 so that the end portion of the hose body 1 is the ring portion. It is fixed between 2b and is adhesively bonded.

[0005]

DISCLOSURE OF THE INVENTION Problems to be Solved by the Invention The above-mentioned hose for a hose line for transferring petroleum or the like is remarkably bent during connecting work for connecting the hoses to each other and at the time of pumping oil or stormy weather. Due to the rough handling, it is said that the conventional hose is damaged by severe water hammer, impact load, pulling, etc. As a result, the surrounding environment is destroyed by the outflow of oil etc. There is a problem,
In order to solve such a problem, conventionally, when a crack is generated in a rubber tube layer and a fluid starts to leak, the leaked fluid is collected at an end portion in the axial direction of the hose, and the flexible bag body is expanded there. A reinforced rubber hose that allows early detection of leakage (Japanese Patent Publication No. 57-25756) and a method of causing a twist in a part of the hose have been proposed.

However, in such a hose with a leak detection device, the carcass layer can detect the leakage with respect to the breakage of the inner pressure-resistant layer, but the hose for the hose line can break the inner pressure-resistant layer. In addition, the cover rubber layer and the carcass layer may be damaged by the action of an external force such as contact with a ship. In such a case, it cannot be detected by the conventional leak detection device, and in some cases, the carcass layer may be destroyed at the same time as the breakdown of the inner breakdown voltage layer. There were problems that developed and caused marine pollution and other disasters.

The present invention has been devised in view of such conventional problems, and when a part of the outer peripheral surface of the hose body is damaged by an external factor, the damaged part is visually confirmed from the outside. It is an object of the present invention to provide a hose capable of preventing leakage of fluid by repairing the hose body in advance.

[0008]

To achieve the above object, the present invention is a hose having a pressure resistant cord layer and a buffer layer laminated on the outer side of a rubber tube layer and a cover rubber layer laminated on the outer side thereof. The gist is that a color material is interposed in the buffer layer. Further, according to the present invention, a pressure resistant cord layer, a buffer layer and a carcass layer are laminated on the outer side of the rubber tube layer, and a coloring material is interposed in the buffer layer of the hose formed by laminating a cover rubber layer on the outer side thereof. Is the gist.

[0009]

The present invention is constructed as described above, and a buffer material made of a sponge having open cells or closed cells of a hose body is impregnated with or added with a coloring material, and a sheet of the coloring material is provided around it. When a part of the outer peripheral surface of the hose body is damaged by an external factor, the coloring material melts in seawater and flows out to the sea, so that the coloring material can be visually confirmed. It is possible to confirm that a part of the outer peripheral surface of the hose body has been damaged.

[0010]

Embodiments of the present invention will be described below with reference to the accompanying drawings. The same components as those in the conventional example are designated by the same reference numerals and the description thereof will be omitted. FIG. 1 is a partial cross-sectional view of a hose end portion in the hose longitudinal direction showing a first embodiment of a hose according to the present invention. At both ends of the hose body 1, attachments for connecting the hose body 1 to each other are attached. A flange 2 is provided.

The hose body 1 is provided with a rubber tube layer 3 made of acrylonitrile-butadiene rubber (NBR) or the like in the innermost layer, and holds a fluid such as petroleum passing through the hose body 1 thereon. A pressure-resistant cord layer 7 formed by laminating a plurality of cord layers 6 in which a reinforcing cord 4 such as a fiber cord or a steel cord is covered with a rubber 5, and the outer side of the pressure-resistant cord layer 7 is crushed by the external pressure of the hose body 1. A reinforcing cord layer 8 is laminated to prevent the pressure-resistant cord layer 7 from being reinforced.

On the outside of the reinforcing cord layer 8, a buffer portion 14 made of a sponge or the like having liquid-tight continuous cells or closed cells in which the fluid leaked from the rubber tube layer 4 and the main body pressure-resistant cord layer 5 flows and stays. Are laminated, and a cover rubber layer 9 made of styrene-butadiene rubber (SBR) or the like for covering the hose body 2 is provided on the outer side thereof to be integrally configured.

In the present invention, the buffer portion 14 made of the sponge or the like is preliminarily provided with an aqueous dye or pigment such as white (titanium oxide), yellow (fast yellow), orange (chrome vermillion), red (red iron oxide) or the like. The cover material rubber layer 9 of the hose body 1 is impregnated with or added with the coloring material 15 to cause an external factor, that is, contact with a ship or a floating substance,
When the color material 15 flows out into seawater and is damaged due to contact with a screw or the like and a crack is generated, the damaged portion of the hose body 1 can be visually confirmed from the outside. In the worst case when the damaged portion expands, fluid such as oil passing through the hose body 1 is prevented from leaking to the sea.

The color material 15 may be formed by impregnating the buffer material 14 in advance or by adding it, as described above.
The coloring material 15 may be formed in a sheet shape and wound around the buffer portion 14 when the hose body 1 is molded, or a stocking place of the coloring material 15 may be provided in a part of the buffer portion 14 at a predetermined interval. The mounting flange 2 is integrally provided with a ring portion 2b for mounting the hose body 1 along the circumferential direction of the outer peripheral surface of the cylindrical portion 2a of the mounting flange 2 as in the conventional example. . The hose body 1 and the mounting flange 2 are connected and joined together by the tightening wire 7a provided at the end of the pressure resistant cord layer 7 and the end wire 8a of the reinforcing cord layer 8 so that the end of the hose body 1 is the ring. It is fixed between the portions 2b and is also adhesively bonded.

FIG. 2 shows a second embodiment of the present invention. This embodiment is a hose with a fluid leakage detection device (referred to as a double carcass hose) in which the present invention is implemented. The main body 1a includes a pressure resistant cord layer 7 formed by laminating a plurality of cord layers 6 in which a reinforcing cord 4 is covered with rubber 5 on the outer side of a rubber tube layer 3a, a reinforcing cord layer 8,
A buffer layer 10 made of a sponge having open cells or closed cells, a carcass tube layer 11, and a carcass layer 12 are laminated, and a cover rubber layer 13 is laminated on the outer side thereof.

The buffer layer 1 made of the sponge or the like.
0 is previously impregnated with or added with a coloring material 15 such as an aqueous dye or pigment such as white (titanium oxide), yellow (fast yellow), orange (chrome vermillion), red (red iron oxide). When the cover rubber layer 9 of the hose body 1 is damaged due to an external factor, that is, a contact with a ship or the like and a crack or the like is generated, the coloring material 15 flows out into seawater, and The damaged part can be visually confirmed from the outside, and the damaged part is enlarged by this, and in the worst case, fluid such as oil passing through the hose body 1 is prevented from leaking to the sea. This is to prevent it.

The other configurations and operations are the same as those of the first embodiment.
Since it is the same as the embodiment, the same reference numerals are given and the description is omitted. As described above, according to the present invention, the hose body 1, 1a
However, due to an external factor, that is, contact with a ship or the like, the cover rubber layer 9
When the seawater invades from the damaged part and the seawater invades from the damaged part, the coloring material 15 melts into the seawater and flows out, so that the seawater part dyed by the coloring material 15 can be visually confirmed from the outside. , By this, the hose body 1, 1a
By repairing the damaged portion of the hose body, the worst situation in which a fluid such as oil passing through the hose body 1 leaks to the sea can be prevented, and by repairing the hose body 1, the durability can be extended. It can be done.

[0018]

As described above, according to the present invention, when the coloring material is interposed in the buffer layer constituting the hose body as described above, when a part of the outer peripheral surface of the hose body is damaged by an external factor, The coloring material flows out from this damaged part into seawater and is dyed, so that the damaged part can be visually checked, and by repairing the damaged part of the hose body in advance, the hose body can be repaired. It is possible to extend the durability and life of the hose and prevent the worst situation in which the fluid such as oil passing through the hose body leaks to the sea.

[Brief description of drawings]

FIG. 1 is a partial cross-sectional view in a hose longitudinal direction at a hose end showing a first embodiment of a hose according to the present invention.

FIG. 2 is a partial cross-sectional view in the longitudinal direction of the hose at the end of the hose showing a second embodiment of the hose according to the present invention.

FIG. 3 is a partial sectional view of a hose end portion of a conventional hose in the hose longitudinal direction.

FIG. 4 is a partial cross-sectional view of a hose end portion of another conventional hose in the hose longitudinal direction.

[Explanation of symbols]

1,1a Hose body 2 Mounting flange 3 Rubber tube layer 4 Reinforcement cord 5 Rubber 6 Code layer 7 Pressure resistant cord layer 8 Reinforcement cord layer 9,13 Cover rubber layer 10,14 Buffer section 11 Carcass tube layer 12 Carcass layer 15 Color material

Claims (2)

[Claims] 1. A hose formed by laminating a pressure resistant cord layer and a buffer layer on the outer side of a rubber tube layer and laminating a cover rubber layer on the outer side of the rubber tube layer, wherein a color material is interposed in the buffer layer. And the hose. 2. A hose formed by laminating a pressure resistant cord layer, a buffer layer, and a carcass layer on the outer side of a rubber tube layer, and laminating a cover rubber layer on the outer side of the rubber tube layer, wherein a coloring material is interposed in the buffer layer. A hose characterized by that.