Connecting structure for composite hose

Abstract

The utility model provides a connecting structure for a composite hose. The connecting structure comprises an inner steel pipe and outer steel sleeves arranged on the outer sides of the two ends of the inner steel pipe. A mounting cavity with an opening in one end is formed between the inner steel pipe and the outer steel sleeve; the outer sides of the two ends of the inner steel pipe are provided with assembling sections used for assembling steel wires in the composite hose and glue pouring sections connected with connectors at the ends of the composite hose, and a cavity where the glue pouring sections are located is filled with flexible glue. The composite hoses are connected through the connecting structure, and continuous transmission of torsion and stress can be effectively blocked and released or blocked and eliminated; the flexible colloid filled in the composite hose has excellent adhesive force, can effectively bond the composite hose body and the stress relief connector, has better elasticity, can release the torsion amount and block the torsion stress of the steel wire, and can effectively avoid the transmission of the torsion amount.

Description

Technical Field

[0001] The utility model relates to the technical field of composite hose connection devices, and more specifically, to a connection structure for composite hoses. Background Art

[0002] It can be used for composite hoses in direct alternative green energy sources such as LNG, liquid ammonia, liquid hydrogen, and liquid carbon dioxide, or capture and storage technologies, floating docks, power docks, and equal-length pipeline transmissions. It is usually formed by pairwise sealing connections of multiple sub-hoses. Currently, the connection between sub-hoses is usually achieved by placing a seal between the metal joints at both ends of the sub-hoses and connecting them with bolts.

[0003] However, when the composite hose is used for high-pressure liquid transmission, due to the axial elastic deformation of the hose under internal pressure, the volume increases due to its structural characteristics. Correspondingly, the pipe body will twist in the initial same direction (hysteresis effect) and then in the opposite direction as the manufacturing winding direction. Along with the reverse twist, this connection method will continuously accumulate the twist amount of the front-end sub-hose. When the accumulated twist amount and the twist amount per meter reach the saturation value, the winding binding force of the inner and outer steel wires reaches the limit, and the internal structure of the pipe body gradually slips and misaligns, gradually destroying or even disintegrating the structural stability, resulting in leakage. Summary of the Utility Model

[0004] In view of this, the purpose of the present utility model is to provide a connection structure for composite hoses to solve the above problems.

[0005] The present utility model adopts the following solutions:

[0006] The present application provides a connection structure for composite hoses, including an inner steel pipe and outer steel sleeves arranged on the outer sides of both ends of the inner steel pipe; an installation cavity with one end open is formed between the inner steel pipe and the outer steel sleeves; on the outer sides of both ends of the inner steel pipe, there are assembly sections for assembling the inner steel wires of the composite hose and glue-filling sections for connecting the end joints of the composite hose. The chamber where the glue-filling sections are located is filled with a flexible colloid; the outer steel sleeves are reduced in diameter by radial clamping force.

[0007] Further, spiral grooves adapted to the inner steel wires of the composite hose are provided on the assembly sections.

[0008] Further, positioning grooves are provided outside the steel pipe for welding positioning of the outer steel sleeves.

[0009] Further, the flexible colloid is a two-component epoxy flexible glue.

[0010] Further, the parameters of the cured flexible colloid satisfy the following: Shore hardness ≥ 60; water absorption < 0.15%; compressive strength ≥ 50 kg / mm2; shear strength ≥ 13 kg / mm2; tensile strength ≥ 22 kg / mm2; temperature resistance range from -273°C to 120°C.

[0011] Further, the outer steel sleeve is reduced in diameter by a radial clamping pressure of 10 MPa to 30 MPa to clamp one end of the composite hose installed in the installation cavity.

[0012] By adopting the above technical solution, the following technical effects can be achieved by the present utility model:

[0013] The present utility model provides a connection structure for a composite hose. The composite hoses are connected through this connection structure, which can effectively block, relieve or block and eliminate the continuous transmission of torsion and stress. The flexible colloid filled inside has excellent adhesion, can effectively bond the composite hose body and the stress elimination connector, and has good elasticity, can relieve the torsional amount and block the torsional stress of the steel wire, and can effectively avoid the transmission of the torsional amount. Description of the Drawings

[0014] In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the drawings required for use in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of the present utility model, and thus should not be regarded as limiting the scope. For those of ordinary skill in the art, other related drawings can be obtained based on these drawings without creative efforts.

[0015] Figure 1 is a schematic cross-sectional structure view of a connection structure for a composite hose according to an embodiment of the present utility model;

[0016] Figure 2 is a schematic cross-sectional structure view of two assembled composite hoses of a connection structure for a composite hose according to an embodiment of the present utility model;

[0017] Reference numerals: inner steel pipe 1, outer steel sleeve 2, installation cavity 3, assembly section 4, glue filling section 5, flexible colloid 6, spiral groove 7, positioning groove 8, composite hose 9, inner steel wire 10, outer steel wire 11. Detailed Embodiments

[0018] To make the objectives, technical solutions and advantages of the embodiments of the present utility model clearer, the technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are some but not all of the embodiments of the present utility model. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without making creative efforts fall within the scope of protection of the present utility model. Therefore, the following detailed description of the embodiments of the present utility model provided in the accompanying drawings is not intended to limit the scope of the present utility model claimed, but merely represents the selected embodiments of the present utility model. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without making creative efforts fall within the scope of protection of the present utility model.

[0019] Embodiment

[0020] Combined with Figures 1 to 2 As shown, this embodiment provides a connection structure for a composite hose, including an inner steel pipe 1 and outer steel sleeves 2 arranged on the outer sides of both ends of the inner steel pipe 1; an installation cavity 3 with one end open is formed between the inner steel pipe 1 and the outer steel sleeves 2; assembly sections 4 for assembling the inner steel wires 10 in the composite hose 9 are arranged on the outer sides of both ends of the inner steel pipe 1, and a glue filling section 5 for connecting the end joints of the composite hose 9, and the cavity where the glue filling section 5 is located is filled with a flexible colloid 6; the outer steel sleeve 2 is reduced in diameter by radial clamping force.

[0021] The composite hoses 9 are connected through this connection structure, which can effectively block, relieve or block and eliminate the continuous transmission of torsion and stress; the flexible colloid 6 filled inside has excellent adhesion, can effectively bond the composite hose 9 body and the stress elimination connector, and has good elasticity, can relieve the torsion amount and block the steel wire torsion stress, and can effectively avoid the transmission of the torsion amount.

[0022] Specifically, in this embodiment, the composite hose 9 includes an inner steel wire 10, a tensile structure layer, a sealing structure layer, and an outer steel wire 11 arranged from inside to outside. A spiral groove 7 adapted to the inner steel wire 10 of the composite hose 9 is provided on the assembly section 4. The spiral groove 7 can form a fastening connection with the inner steel wire 10 of the sub-hose to prevent the composite hose 9 from detaching from the connection structure. A positioning groove 8 is provided outside the steel pipe for welding and positioning the outer steel sleeve 2. The flexible colloid 6 is a two-component epoxy flexible glue, which has the following characteristics after curing: Shore hardness ≥ 60; water absorption < 0.15; compressive strength ≥ 50 kg / mm2; shear strength ≥ 13 kg / mm2; tensile strength ≥ 22 kg / mm2; temperature resistance range from -273°C to 120°C; at the same time, it has excellent adhesion, can effectively bond the body of the composite hose 9 and the connection structure, has good elasticity, can relieve the torsional amount and block the torsional stress of the steel wire.

[0023] The outer steel sleeve 2 is reduced in diameter by a radial clamping pressure of 10 MPa to 30 MPa to clamp one end of the composite hose 9 installed in the installation cavity 3, further strengthening the connection between the hose and the connection structure. The above is only the preferred embodiment of the present invention, and the protection scope of the present invention is not limited to the above embodiments. All technical solutions falling within the concept of the present invention belong to the protection scope of the present invention.

[0024] In the description of the present invention, it should be understood that the orientation or positional relationship indicated by the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the present invention.

[0025] In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be construed as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include one or more of such features. In the description of the present invention, "a plurality" means two or more unless otherwise specifically defined.

[0026] In the present utility model, unless otherwise clearly specified or defined, the terms "installed", "connected", "coupled", "fixed", etc. shall be construed in a broad sense. For example, it may be a fixed connection, a detachable connection, or integrated; it may be a mechanical connection or an electrical connection; it may be directly connected or indirectly connected through an intermediate medium, and it may be the internal communication between two components or the interaction relationship between two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0027] In the present utility model, unless otherwise clearly specified or defined, the first feature being "above" or "below" the second feature may include the direct contact between the first and second features, or may include the situation where the first and second features are not in direct contact but in contact through additional features therebetween. Moreover, the first feature being "above", "over" and "on" the second feature includes that the first feature is directly above or obliquely above the second feature, or merely indicates that the first feature has a higher horizontal height than the second feature. The first feature being "below", "under" and "beneath" the second feature includes that the first feature is directly below or obliquely below the second feature, or merely indicates that the first feature has a lower horizontal height than the second feature.

Claims

1. A connecting structure for a composite hose, characterized in that It includes an inner steel pipe and outer steel sleeves arranged on the outer sides of both ends of the inner steel pipe; an installation cavity with one end open is formed between the inner steel pipe and the outer steel sleeves; on the outer sides of both ends of the inner steel pipe, there are assembly sections for assembling the inner steel wires of the composite hose and glue-filling sections for connecting the end joints of the composite hose, and the chambers where the glue-filling sections are located are filled with flexible colloid; the outer steel sleeves are reduced in diameter by radial clamping force.

2. The connection structure for a composite hose according to claim 1, characterized in that, Spiral grooves adapted to the inner steel wires of the composite hose are arranged on the assembly sections.

3. The connection structure for a composite hose according to claim 1, characterized in that, Positioning grooves are arranged outside the steel pipe for welding positioning of the outer steel sleeves.

4. The connection structure for a composite hose according to claim 1, characterized in that, The flexible colloid is a two-component epoxy flexible glue.

5. The connection structure for a composite hose according to claim 4, characterized in that, The parameters of the colloid after the flexible colloid is cured meet the following requirements: Shore hardness ≥ 60; water absorption rate < 0.15%; compressive strength ≥ 50 kg / mm 2 ; shear strength ≥ 13 kg / mm 2 ; tensile strength ≥ 22 kg / mm 2 ; temperature resistance range is from -273°C to 120°C.

6. The connection structure for a composite hose according to claim 1, characterized in that, The outer steel sleeves are reduced in diameter by a radial clamping force of 10 MPa to 30 MPa to clamp one end of the composite hose installed in the installation cavity.

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