JPH0729388U - hose - Google Patents

Abstract

(57) [Summary] [Purpose] When a part of the outer peripheral surface of the hose body is damaged due to external factors, the damaged part can be visually confirmed from the outside, and the hose body is repaired in advance. Therefore, a hose capable of preventing fluid leakage is provided. [Structure] On the outer side of the reinforcing cord layer 8, there is provided a buffer portion 14 made of 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. 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 of the laminated rubber sheet layer 15 through a colored rubber sheet layer 15 having a predetermined thickness. It is configured to

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a hose that transfers a fluid such as oil at sea, and more specifically, if a part of the outer peripheral surface of the hose is damaged by contact with a ship at sea, the damaged part can be visually confirmed. It is about hoses.

[0002]

[Prior art]

 Conventionally, when transferring a fluid such as oil 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. By the way, as a marine hose used for a hose line, as shown in FIG. 3, for example, mounting flanges 2 provided at both ends of a hose body 1 having 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. A cover rubber layer 9 is laminated on the outside of the pressure resistant cord layer 7 via a reinforcing cord layer 8 that prevents the hose body 1 from being crushed due to external pressure and that reinforces the pressure resistant cord layer 7.

Further, as shown in FIG. 4, a hose 1 a with a fluid leakage detection device (referred to as a double carcass hose) is a cord in which a reinforcing cord 4 is covered with a rubber 5 on the outside of a rubber tube layer 3 a. A pressure-resistant cord layer 7 formed by laminating a plurality of layers 6, a reinforcing cord layer 8, a buffer layer 10 made of 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 outside.

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 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 It is fixed between the ring portions 2b and is adhesively joined.

[0005]

[Problems to be solved by the device]

 By the way, the above-mentioned hose for a hose line for transferring petroleum, etc. is significantly bent and roughly handled during the connecting work for connecting the hoses and during the oil pumping or rough weather. However, there is a problem that the hose is damaged due to a severe water hammer, impact load, pulling, etc. As a result, the surrounding environment is destroyed by the outflow of oil etc., and such a problem is solved. Therefore, in the past, when a crack occurred in the rubber tube layer and the fluid started to leak, the leaked fluid was collected at the end of the hose in the axial direction and the flexible bag was expanded there to expedite the leak. A reinforced rubber hose (Japanese Patent Publication No. 57-25756) that has been discovered 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, it is possible to detect the leakage by the action of the carcass layer with respect to the destruction of the inner pressure-resistant layer, but the hose for the hose line does not destroy the inner pressure-resistant layer. In addition, the cover rubber layer and the carcass layer may be damaged by the action of external force such as contact with a ship. In such a case, the conventional leak detection device cannot detect it, and in some cases, the carcass layer may be simultaneously destroyed at the same time as the breakdown of the inner breakdown voltage layer. There was a problem that developed into a leak of water and caused marine pollution and other disasters.

The present invention was devised by focusing on such a conventional problem, 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]

In order to achieve the above-mentioned object, the present invention is characterized in that a colored rubber sheet layer is interposed between a reinforcing cord layer and a cover rubber layer. Further, the gist of this invention is that a colored rubber sheet layer is interposed between the carcass layer and the cover rubber layer.

[0009]

[Action]

 This invention is configured as described above, and the hose body is colored with a coloring material between the reinforcing cord layer made of sponge or the like having open cells or closed cells and the cover rubber layer, or between the carcass layer and the cover rubber layer. When a part of the outer peripheral surface of the hose body is damaged due to external factors, the colored rubber sheet layer inside the cover rubber layer is exposed to the outside of the hose body. By visually confirming the color of the colored rubber sheet layer, it is possible to confirm that a part of the outer peripheral surface of the hose body is damaged.

[0010]

【Example】

 An embodiment 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 in the longitudinal direction of the hose at the end of the hose showing a first embodiment of the hose according to the present invention. At both ends of the hose body 1, the hose body 1 is connected to each other. A mounting 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 a fluid such as petroleum passing through the hose body 1 is disposed on the rubber tube layer 3. A pressure-resistant cord layer 7 formed by laminating a plurality of cord layers 6 each of which holds a reinforcing cord 4 such as a fiber cord or a steel cord covered with rubber 5, and the hose body 1 is crushed by an external pressure on the outside of the pressure-resistant cord layer 7. A reinforcing cord layer 8 is laminated to prevent the occurrence of pressure and to reinforce the pressure-resistant cord layer 7.

A buffer composed of a sponge or the like having a liquid-tight continuous cell or a closed cell in which the fluid leaked from the rubber tube layer 4 and the main body pressure-resistant cord layer 5 flows and stays outside the reinforcing cord layer 8. The portion 14 is laminated, and on the outer side thereof, a cover rubber layer 9 made of styrene / butadiene rubber (SBR) or the like for covering the hose body 2 via a colored rubber sheet layer 15 having a predetermined thickness is provided. It is constructed as a unit.

In this invention, as the colored rubber sheet layer 15, a rubber sheet material obtained by kneading a coloring material such as dye or pigment into a rubber material is used, and the cover rubber layer 9 of the hose body 1 is an external factor. That is, when the damage is caused by a contact with a ship or a floating substance, a contact with a screw or the like and a crack is generated, the colored rubber sheet layer 15 is exposed to the outside of the hose body 1 and is visually observed from the outside. By doing so, the damaged part expands, and in the worst case, fluid such as oil passing through the hose body 1 is prevented from leaking to the sea. is there.

As the color material to be mixed with the rubber material, white (titanium oxide), yellow (cadmium yellow), red (red iron oxide), etc. such as pigments are used so that they can be surely confirmed visually. It is the one. As in the conventional example, 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. There is. The hose body 1 and the mounting flange 2 are connected and joined by tightening the 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 parts 2b and is also adhesively bonded.

FIG. 2 shows a second embodiment of the present invention, in which the present invention is applied to a hose equipped with a fluid leakage detection device (referred to as a double carcass hose). The hose body 1a has 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, and continuous cells or closed cells. A buffer layer 10 made of sponge, a carcass tube layer 11, and a carcass layer 12 are laminated, and a colored rubber sheet layer 15 made of a rubber sheet material obtained by kneading a coloring material such as a pigment with a rubber material is interposed outside the buffer layer 10. Further, a cover rubber layer 13 is laminated on the outer side thereof.

The colored rubber sheet layer 15 has the same structure as that of the first embodiment. Although the buffer layer 14 is provided in this embodiment, it may not be provided. As described above, in this invention, the hose bodies 1 and 1a are arranged on the back side of the hose bodies 1 and 1a when the cover rubber layer 9 is damaged due to an external factor, that is, contact with a ship or the like, and cracks occur. The colored rubber sheet layer 15 is exposed to the outside so that the color of the colored rubber sheet layer 15 can be visually confirmed from the outside, thereby repairing the damaged parts of the hose bodies 1 and 1a. It is possible to prevent the worst situation in which a fluid such as petroleum passing through the inside leaks to the sea and to improve the durability by repairing the hose body 1.

[0017]

[Effect of device]

 According to the present invention, as described above, the colored rubber sheet layer is interposed between the reinforcing cord layer and the cover rubber layer or between the carcass layer and the cover rubber layer. When a part of the outer peripheral surface of the colored rubber sheet layer is exposed to external factors, the colored rubber sheet layer is exposed to the outside so that the color of the colored rubber sheet layer can be visually confirmed from the outside. By repairing the damaged part of the hose body in this way, the worst case of fluid such as oil passing through the hose body leaking to the sea can be prevented, and the hose body can be repaired for durability. There is also an effect that can be extended.

[Brief description of drawings]

FIG. 1 is a partial cross-sectional view in the 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 Cord layer 7 Pressure resistant cord layer 8 Reinforcement cord layer 9,13 Cover rubber layer 10,14 Buffer layer 11 Carcass tube layer 12 Carcass layer 15 Colored rubber Sheet layer

─────────────────────────────────────────────────── ─── Continuation of the front page (51) Int.Cl. ⁶ Identification code Internal reference number FI Technical display location F16L 33/28 F16L 33/00 A

Claims (2)

[Scope of utility model registration request] 1. A hose formed by laminating a pressure resistant cord layer and a reinforcing cord 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, and between the reinforcing cord layer and the cover rubber layer. A hose having a colored rubber sheet layer interposed therebetween. 2. A hose formed by laminating a pressure resistant cord layer, a reinforcing cord layer, and a carcass layer on the outer side of a rubber tube layer, and laminating a cover rubber layer on the outer side thereof.
A hose having a colored rubber sheet layer interposed between the carcass layer and the cover rubber layer.