Anti-drawing light rubber hose

Abstract

The utility model belongs to the technical field of rubber hoses, and particularly relates to an anti-drawing light rubber hose. The anti-drawing light rubber hose comprises an inner rubber layer, a reinforcing layer and an outer rubber layer, the reinforcing layer comprises an anti-drawing layer, the anti-drawing layer comprises a plurality of subunits arranged in the axial direction of a pipeline, each subunit comprises stacked sheets, clamp rings are arranged in the middles of the sheets, a cavity is formed between every two adjacent clamp rings, and the outer rubber layer is arranged between every two adjacent clamp rings. The end parts of the adjacent sheets in the cavity are sequentially staggered and laminated to form friction locking; the novel rubber hose realizes the combination of light weight and axial drawing resistance, and has the characteristics of compact structure, convenience in processing, economy and durability.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the technical field of rubber pipe, and specifically relates to a light-weight rubber hose with tensile resistance. BACKGROUND

[0002] At present, the pipelines for oil drilling, chemical industry, oil and gas transportation in China are mostly steel pipelines or hard pipelines made of glass fiber reinforced plastic, which are not only heavy and high in cost, but also inconvenient to connect and poor in stability.

[0003] With the increasingly wide application of rubber hoses, more diversified requirements are put forward for the performance, such as the use requirements of light weight (floating), flame retardant weather resistance and tensile resistance for oil pipelines during offshore oil development. The existing rubber hoses are mostly of composite structure, and the multiple layers of the pipe wall are connected through the adhesive mode, the inside of the rubber hose is mostly vacuum solid, and the reinforcing structure is mostly multiple layers of wire winding or woven cloth, so that the overall quality of the pipe is heavy and inconvenient to use; and the rigid connection in the pipe wall lacks axial extension capacity, so the tensile resistance is poor, and the outer rubber layer is prone to cracking and other phenomena during long-term use, and the effective service life is short. SUMMARY

[0004] The utility model aims at providing a novel rubber hose with light weight and axial tensile resistance, which has the characteristics of compact structure, convenient processing and economic durability.

[0005] To achieve the above-mentioned purpose, the utility model adopts the technical scheme that:

[0006] A light-weight rubber hose with tensile resistance, characterized in that: comprising an inner rubber layer, a reinforcing layer and an outer rubber layer, the reinforcing layer comprises a tensile resistance layer, the tensile resistance layer comprises a plurality of sub-units arranged along the axial direction of the pipeline, the sub-unit comprises a sheet arranged in layers, the sheet is provided with a bundle ring in the middle, a cavity is formed between adjacent bundle rings, and the end portions of adjacent sheets in the cavity are frictionally locked by being sequentially and staggeringly arranged in layers.

[0007] The additional technical features of the above-mentioned light-weight rubber hose with tensile resistance further include:

[0008] The tensile resistance layer is arranged between the reinforcing layer and the outer rubber layer and / or between the reinforcing layer and the inner rubber layer.

[0009] The sheet constituting the tensile resistance layer comprises a plant fiber sheet or a high molecular film, the friction coefficient of which is not less than 0.8, and the number of the staggeringly arranged end portions of adjacent sheets is not less than 50.

[0010] The sheet of the anti-pulling layer is kraft paper, kraft paperboard or BOPA film, and the film surface roughness is not less than 0.1;

[0011] The inner rubber layer is made of neoprene mixed at high temperature and polytetrafluoroethylene or HNBR base rubber, the reinforcing layer is formed by winding a plurality of steel wires, copper wires or composite woven cloth, and the outer rubber layer is made of fireproof rubber.

[0012] Compared with the prior art, the anti-pulling light rubber hose has the following advantages: the inner reinforcing layer of the rubber hose is provided with an anti-pulling layer, which is composed of a plurality of sub-units arranged along the axial direction of the pipeline, the sub-unit comprises a sheet arranged in layers, the sheet is provided with a buckle ring in the middle, a cavity is formed between adjacent buckle rings, the end portions of adjacent sheets in the cavity are frictionally locked by being sequentially and staggeringly arranged in layers, that is, the mutual sliding friction of the staggeringly arranged sheets realizes axial anti-pulling, and the cavity has air pressure, when the sheets in the stacking area are torn, the internal gas is exhausted to make the stacking part be affected by external air pressure, thereby further enhancing the friction and realizing the friction locking effect, so that the pipe has both axial extension and anti-pulling performance; at the same time, the cavity (not less than the atmospheric pressure outside) is formed between the buckle rings, so that the rubber hose has a certain buoyancy, thereby reducing the overall weight and having the characteristics of lightness and flexibility, and is especially suitable for large-diameter floating marine pipeline. BRIEF DESCRIPTION OF DRAWINGS

[0013] Figure 1 Figure 1 is a structural schematic view of the anti-pulling light rubber hose of the utility model. DETAILED DESCRIPTION

[0014] The structure and working principle of the anti-pulling light rubber hose provided by the utility model will be further described in detail below in combination with the drawings. Obviously, the described embodiments are only a part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all the other embodiments obtained by those skilled in the art without creative labor belong to the protection scope of the utility model.

[0015] In the description of the utility model, unless otherwise specified, the indicated orientation or positional relationship in the terms is based on the orientation or positional relationship shown in the drawings, which is only for the convenience of describing the utility model and simplifying the description, and does not indicate or imply that the indicated device or element must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the utility model.

[0016] It should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "setting" should be interpreted broadly. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to mechanical connections or electrical connections; they can refer to direct connections or indirect connections through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0017] like Figure 1 As shown, the structure of the pull-out resistant lightweight rubber hose includes an inner rubber layer 1, a reinforcing layer 2, and an outer rubber layer 3. The reinforcing layer 2 includes a pull-out resistant layer 4, which is composed of multiple sub-units 40 arranged along the pipe axis. Each sub-unit 40 includes a sheet 41 stacked together. A binding ring 42 is provided in the middle of the sheet 41, and a cavity 43 is formed between adjacent binding rings 42. The ends of adjacent sheets 41 in the cavity 43 are frictionally locked by being staggered and stacked in sequence.

[0018] Its working principle is as follows: The reinforcing layer 2 of the rubber hose is located between the inner rubber layer 1 and the outer rubber layer 3. The improvement is that the reinforcing layer 2 adds a pull-out layer 4, which is a sub-unit 40 composed of multiple layers of sheets 41 arranged along the pipe axis. Each of the stacked sheets 41 has a binding ring 42 in the middle, and a cavity 43 (at atmospheric pressure or slightly higher) is formed between the binding rings 42. The ends of adjacent sheets 41 in the cavity 43 are locked by the sliding friction between them through staggered stacking. By pulling each other, the air in the stacked area is vented and subjected to air pressure, which further enhances the friction locking effect, so that the rubber hose has both axial extension and pull-out resistance. At the same time, compared with solid structure rubber hoses, this rubber hose has an air cavity inside, which reduces weight and makes it more convenient and flexible to use.

[0019] It should be noted that the clamping ring 42 can be a single unit pressing the middle of the laminated sheet 41, or it can be composed of two concentric collars, with the middle of the laminated sheet 41 pressed between the collars.

[0020] In the structure constituting the above-mentioned pull-out resistant lightweight rubber hose,

[0021] —From the perspective of facilitating production and manufacturing and making it easier to modify existing rubber hoses, during the processing of this rubber hose, the above-mentioned tensile layer 4 can be placed between the reinforcing layer 2 and the outer rubber layer 3, or between the reinforcing layer 2 and the inner rubber layer 1, as long as the appropriate length of cavity 43 between the bundle rings 42 of the subunit 40 can be maintained.

[0022] Preferably, the sheet 41 constituting the anti-pulling layer 4 comprises plant fiber sheets or high molecular film, and the friction coefficient of the anti-pulling layer 4 should not be less than 0.8 due to the key factor of friction force of the staggered layer structure, and the friction force will become greater with the increase of the number of staggered layers, so the number of staggered layers of the end portions of adjacent sheet 41 should not be less than 50.

[0023] Further, the material of the sheet 41 of the anti-pulling layer 4 has diversity, and it is only required to have sufficient tearing strength and toughness, such as kraft paper, kraft paper or BOPA film, and the surface roughness of the sheet 41 has great influence on the friction force, and the film surface roughness should not be less than 0.1.

[0024] Preferably, the inner rubber layer 1 is made of neoprene rubber mixed at high temperature and polytetrafluoroethylene or HNBR base rubber; the reinforcing layer 2 is formed by winding a plurality of steel wires, copper wires or composite material woven cloth; and the outer rubber layer 3 is made of fireproof rubber. The structure design has the advantages of large mechanical strength, strong pressure bearing capacity, high flexibility, high rubber adhesion and the like, so that the rubber hose has good corrosion resistance, fire resistance, heat insulation, high and low temperature resistance, high pressure resistance, good elasticity and fatigue resistance.

[0025] The above-mentioned embodiments are only used to illustrate the technical solutions of the present application, and are not the limiting conditions for the implementation of the present application, so any other modification or equivalent replacement of the technical solutions of the present application, such as the modification of the structure size, internal structure and the like, as long as it does not deviate from the spirit and scope of the technical solutions of the present application, should be covered in the scope of the claims of the present application.

Claims

1. A pull-resistant light weight rubber hose characterized by: The pipe comprises an inner rubber layer, a reinforcing layer and an outer rubber layer, the reinforcing layer comprises a pull-out resistant layer, the pull-out resistant layer comprises a plurality of sub-units arranged along the pipe axis, the sub-units comprise laminated sheets, the sheets are provided with a plurality of buckles in the middle part, cavities are formed between adjacent buckles, and the end parts of adjacent sheets are frictionally locked by being sequentially and staggeringly laminated.

2. A pull resistant light weight rubber hose as claimed in claim 1, wherein: The pull-out resistant layer is arranged between the reinforcing layer and the outer rubber layer and / or between the reinforcing layer and the inner rubber layer.

3. A pull resistant light weight rubber hose according to claim 1 or 2, characterized in that: The sheets constituting the pull-out resistant layer comprise plant fiber sheets or polymer films, the friction coefficient of the sheets is not less than 0.8, and the number of the end parts of adjacent sheets that are staggeringly laminated is not less than 50.

4. A pull resistant light weight rubber hose as claimed in claim 1, wherein: The sheets of the pull-out resistant layer are kraft paper, kraft liner paper or BOPA film, and the film surface roughness is not less than 0.

1.

5. A pull resistant light weight rubber hose as claimed in claim 1, wherein: The inner rubber layer is made of neoprene and polytetrafluoroethylene mixed at high temperature or HNBR base rubber; the reinforcing layer is formed by winding a plurality of layers of steel wire, copper wire or composite material woven cloth; and the outer rubber layer is made of fire-resistant rubber.

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