Quick connector accessory of marine composite flexible pipeline

Abstract

The invention discloses a quick connector accessory of a marine composite flexible pipeline. The quick connector accessory comprises an outer sleeve shell and an inner sleeve shell. The outer sleeve shell is in an axial symmetry ring shape, the section of the outer sleeve shell is similar to an inverted-T shape, the outer sleeve shell is composed of a first vertical arm, a second vertical arm, a first transverse arm and a second transverse arm, and a first cavity is defined. The inner sleeve shell is in an axial symmetry ring shape, the section of the inner sleeve shell is in an E shape, the inner sleeve shell is composed of a third cross arm, a fourth cross arm, a third vertical arm and a fourth vertical arm, the lower end of the fourth vertical arm is integrally connected with the third cross arm, and fifth vertical arms are arranged on the two sides of the third cross arm respectively. The outer sleeve shell is located on the outer side of the inner sleeve shell, and the third vertical arm extends into the first vertical arm to be fastened and connected. A first termination ring is adjacently arranged on the outer side of the third cross arm; and a second termination ring is adjacently arranged on the outer side of the fifth vertical arm. Each layer of the ocean composite flexible pipeline is bent and ends at the corresponding position, and effective connection of the pipeline is achieved. When the two sections of ocean composite flexible pipelines are installed in a matched mode, the requirements for sealing forming operation of high polymer materials and improvement of the vibration resistance performance of the pipelines can be met.

Description

Technical Field

[0001] The present invention relates to the technical field of marine oil and gas resource development, and more particularly, to a quick-connect fitting for a marine composite flexible pipe. Background Art

[0002] Petroleum resources are the lifeblood of the development of industrial society. With the rapid development of the economic society, the demand for energy by mankind is increasing day by day. The gradual depletion of onshore oil and gas reservoirs has shifted the focus of oil and gas exploration and development to the ocean. China's marine territory contains rich oil and gas resources. The oil resource volume of the offshore continental shelf is about 2.4×10 10 t, and the natural gas resource volume is about 1.3×10 13 m 3 . The future of marine oil and gas resources has great potential for exploitation and utilization, and the marine oil and gas industry has broad development prospects. In recent years, China's marine oil engineering technology has been continuously developing, and the degree of localization of related equipment has been continuously improved. However, there is still a certain gap with the international advanced level, and it is urgent to improve the equipment level to enhance the protection and utilization of marine oil and gas resources.

[0003] In marine oil and gas development, oil and gas pipelines are an important link connecting the wellheads of marine oil and gas fields and offshore platforms. As the water depth of marine oil and gas field exploration and development increases, the operating environment of the pipelines becomes more complex and harsh, which poses extremely high requirements for pipeline design, manufacturing, and integrity management. Since the 1960s, flexible pipes with composite structures have gradually replaced traditional steel pipes and have been increasingly widely used in marine oil and gas development. At present, the following problems exist in the quick connectors of traditional marine composite flexible hoses in practical applications:

[0004] ① When traditional quick connectors are used in the marine environment, they are usually affected by factors such as wave impact and temperature changes. These external effects may cause the joint structure to gradually loosen. The loosening of the joint will lead to a decrease in sealing performance, thereby increasing the risk of seawater infiltration. This may not only cause corrosion and damage to the connection part of the flexible pipe, but also pose a serious threat to the stability and safety of the entire system.

[0005] ② When quick connectors are in service in the marine environment for a long time, due to the action of repeated dynamic loads and the influence of complex environmental conditions, microscopic displacement or wear accumulation may occur, resulting in the connection structure gradually losing its initial tightened state. This loosening phenomenon will not only affect the stability of the joint, but may also cause stress concentration at key parts, thereby increasing the risk of failure and threatening the safe operation of the overall system.

[0006] ③ As a key connection part of the flexible pipeline, the quick coupling often bears a large axial stress. Especially under high-pressure or dynamic load conditions, it is easy to cause stress concentration at the joint between the coupling and the pipeline. Under long-term action, this stress concentration may trigger material fatigue or local deformation, thus weakening the fixing ability of the coupling and increasing the risk of structural failure. Summary of the Invention

[0007] The present invention aims to solve at least one of the technical problems existing in the prior art. For this purpose, the present invention provides a quick coupling fitting for a marine composite flexible pipeline, aiming to enable it to meet the requirements of sealing and forming operations of polymer materials, improving the anti-fatigue and anti-vibration properties of the pipeline when the pipes are adaptively connected after inspection and repair of the marine composite flexible pipeline.

[0008] To achieve the above object, the present invention adopts the following technical solutions: A quick coupling fitting for a marine composite flexible pipeline, adapted to be connected between two sections of marine composite flexible pipelines, the quick coupling fitting comprising:

[0009] An outer casing, which is an axially symmetrically arranged annular structure. The cross-section of the part of it located outside the marine composite flexible pipeline is in a shape similar to a "convex". It includes a first vertical arm and a second vertical arm arranged parallel to the radial direction of the marine composite flexible pipeline and a first horizontal arm and a second horizontal arm arranged parallel to the axial direction of the marine composite flexible pipeline. And a first cavity is jointly defined among the first horizontal arm, the second vertical arm and the second horizontal arm;

[0010] An inner casing, which is also an axially symmetrically arranged annular structure. The cross-section of the part of it located outside the marine composite flexible pipeline is in a shape similar to a "mountain". It includes a third horizontal arm and a fourth horizontal arm arranged parallel to the axial direction of the marine composite flexible pipeline and a third vertical arm and a fourth vertical arm arranged parallel to the radial direction of the marine composite flexible pipeline. And the third vertical arm and the fourth vertical arm are in a stepped shape with a thinner upper part and a thicker lower part. The lower end of the fourth vertical arm is integrally connected to the third horizontal arm. A fifth vertical arm is provided on each of the third horizontal arms located on both sides of the fourth vertical arm;

[0011] The outer jacket is arranged outside the inner jacket, and the third vertical arm of the inner jacket extends into the first vertical arm of the outer jacket and is fixedly connected thereto; a first termination ring is arranged adjacent to the outside of the third transverse arm of the inner jacket, and the skeleton layer of the marine composite flexible pipe bends downward and terminates at the first termination ring; a second termination ring is arranged adjacent to the outside of the fifth vertical arm of the inner jacket, and the compressive armor layer and the first wear-resistant layer of the marine composite flexible pipe also bend downward and terminate at the second termination ring; the lining layer of the marine composite flexible pipe bends downward and its end extends into the fifth vertical arm of the inner jacket, the second wear-resistant layer and the outer protective layer of the marine composite flexible pipe bend upward and terminate at the end of the second transverse arm of the outer jacket, and the first tensile armor layer and the second tensile armor layer of the marine composite flexible pipe bend upward and their ends extend into the first cavity and are terminated in the first cavity.

[0012] Preferably, a grease injection hole penetrating radially is formed on the first transverse arm of the outer jacket, and the grease injection hole communicates with the first cavity. Epoxy resin is injected into the first cavity for potting and filling to fix the first tensile armor layer and the second tensile armor layer in the first cavity.

[0013] Preferably, when the ends of the first tensile armor layer and the second tensile armor layer extend into the first cavity, the ends of the two are bent into a U shape towards the end of the second transverse arm of the outer jacket and are fixedly connected to the first transverse arm of the outer jacket by a first fixing member.

[0014] Preferably, a second cavity is jointly defined between the fourth vertical arm, the third transverse arm and the fifth vertical arm of the inner jacket and the first transverse arm and the second transverse arm of the outer jacket. A wedge-shaped block member is arranged in the second cavity. The wedge-shaped block member includes a block portion and a pointed end portion. The block portion is fixed by the fourth vertical arm, the third transverse arm, the fifth vertical arm of the inner jacket and the first transverse arm of the outer jacket. The outside of the block portion is in direct contact with the first tensile armor layer, and the pointed end portion is embedded in the gap between the first wear-resistant layer and the first tensile armor layer, and the inside of the pointed end portion is in direct contact with the first wear-resistant layer.

[0015] Preferably, a first sealing ring is arranged on the outside of the lining layer and at the ends of the compressive armor layer and the first wear-resistant layer. At the same time, a second sealing ring is arranged between the outside of the pointed end portion and the inside of the first tensile armor layer.

[0016] Preferably, through holes are formed on the first vertical arm of the outer jacket and the third vertical arm of the inner jacket and are in communication with each other. The first vertical arm of the outer jacket and the third vertical arm of the inner jacket are fixedly connected by a second fixing member passing through the through holes.

[0017] Due to the above technical solutions adopted by the present invention, it has the following advantages:

[0018] 1. When the quick-connect fitting provided by the present invention is connected to the marine composite flexible pipeline, by adopting the fastening connection structure of the outer shell and the inner shell, the stability between the flexible pipeline and the joint is effectively ensured, the tensile strength and pressure resistance performance of the connection part are enhanced, and thus the service life of the joint is extended.

[0019] 2. When the quick-connect fitting provided by the present invention is connected to the marine composite flexible pipeline, the first sealing ring and the second sealing ring in the design can effectively seal the inner lining layer and the compression armor layer of the pipeline, prevent seawater leakage and internal medium leakage, and ensure the safety and reliability of the marine composite flexible pipeline. In addition, the design of the grease injection hole can further reinforce the fixation between the tensile armor layer and the joint through the potting filling of epoxy resin, ensuring the long-term stability of the joint under high dynamic load conditions.

[0020] 3. The quick-connect fitting provided by the present invention introduces a wedge block design. By arranging wedge block components in the joint structure, the fastening fixation of the flexible pipeline can be realized, significantly improving its axial tensile resistance performance. At the same time, compared with the traditional joint structure, it is simple, but still ensures its sealing performance, saving a large amount of installation time. In addition, the precise fit between the wedge block and the tensile armor layer enhances the tensile strength of the joint, effectively preventing connection loosening caused by axial tension, reducing the risk of joint failure, and ensuring the long-term stability and reliability of the joint under high dynamic load conditions.

[0021] 4. When the quick-connect fitting provided by the present invention is connected to the marine composite flexible pipeline, it avoids the fatigue problem of the end of the tensile armor layer caused by the radial outer bending and unfolding of the pipeline, avoids the residual stress problem caused by bending the tensile armor layer during the installation of the traditional end joint, avoids the stress concentration phenomenon at the bending part of the tensile armor layer, and improves the service life of the flexible pipeline at the joint. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] By reading the following detailed description of the preferred embodiments, various other advantages and benefits will become clear to those of ordinary skill in the art. The drawings are only for the purpose of showing the preferred embodiments and are not considered to be a limitation of the present invention. Throughout the drawings, the same reference numerals are used to represent the same components. In the drawings:

[0023] Figure 1 is an external view of the quick-connect fitting provided by an embodiment of the present invention when connected to a marine composite flexible hose;

[0024] Figure 2 is a schematic structural diagram of the outer shell provided by an embodiment of the present invention;

[0025] Figure 3 Structural schematic diagram of the inner housing provided by an embodiment of the present invention;

[0026] Figure 4 Cross-sectional schematic diagram when the quick connector fitting provided by an embodiment of the present invention is connected to the marine composite flexible hose. Detailed implementation manners

[0027] To make the objectives, technical solutions and advantages of the present invention clearer, the following further explains the detailed implementation manners of the present invention with reference to the accompanying drawings. Although the accompanying drawings show exemplary embodiments of the present invention, it should be understood that the present invention can be implemented in various forms and should not be limited by the embodiments described herein. On the contrary, these embodiments are provided to enable a more thorough understanding of the present invention and to fully convey the scope of the present invention to those skilled in the art.

[0028] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. These are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as a limitation of the present invention.

[0029] 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 more than two unless otherwise specifically defined.

[0030] In the present invention, unless otherwise clearly defined and limited, the terms "mounted", "connected", "connected to", "fixed", etc. should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or integrated; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the internal communication of two elements or the interaction relationship between two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0031] In the present invention, unless otherwise clearly specified and defined, the first feature being "on" or "under" the second feature may mean that the first and second features are in direct contact, or the first and second features are indirectly in contact through an intermediate medium. Moreover, the first feature being "above", "over" and "on top of" the second feature may mean that the first feature is directly above or obliquely above the second feature, or simply indicates that the first feature has a higher horizontal height than the second feature. The first feature being "under", "beneath" and "underneath" the second feature may mean that the first feature is directly below or obliquely below the second feature, or simply indicates that the first feature has a lower horizontal height than the second feature.

[0032] In the description of this specification, the description with reference to terms such as "one embodiment", "some embodiments", "example", "specific example", or "some examples", etc. means that the specific features, structures, materials, or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described can be combined in a suitable manner in any one or more embodiments or examples. In addition, without contradiction, those skilled in the art can combine and combine the different embodiments or examples described in this specification and the features of different embodiments or examples.

[0033] The quick-connect fitting for a marine composite flexible pipe provided by the present invention includes an outer shell and an inner shell; the outer shell is in an axially symmetric ring shape and has a cross-section similar to a "convex" shape, and is composed of a first vertical arm, a second vertical arm, a first horizontal arm, and a second horizontal arm, and defines a first cavity; the inner shell is in an axially symmetric ring shape and has a cross-section similar to a "mountain" shape, and is composed of a third horizontal arm, a fourth horizontal arm, a third vertical arm, and a fourth vertical arm. The lower end of the fourth vertical arm is integrally connected to the third horizontal arm, and a fifth vertical arm is provided on each side of the third horizontal arm; the outer shell is located outside the inner shell, and the third vertical arm extends into the first vertical arm and is tightly connected; a first termination ring is arranged adjacent to the outside of the third horizontal arm, and a second termination ring is arranged adjacent to the outside of the fifth vertical arm. Each layer of the marine composite flexible pipe is bent and terminated at a corresponding position to achieve effective connection of the pipe. When the present invention adapts and installs two sections of marine composite flexible pipes, it can meet the requirements of the sealing molding operation of polymer materials and improve the anti-vibration performance of the pipe.

[0034] Next, a detailed description will be given of the quick-connect fitting for a marine composite flexible pipe provided by the embodiments of the present invention with reference to the accompanying drawings.

[0035] Please refer to Figure 1, the quick-connect fitting for the marine composite flexible pipeline provided by the present invention mainly includes an outer casing 1 and an inner casing 2 connected between two marine composite flexible pipelines 3. Among them, the marine composite flexible hose 3 sequentially includes, but is not limited to, a skeleton layer 14, a lining layer 15, a compression armor layer 16, a first wear-resistant layer 17, a first tensile armor layer 18, a second wear-resistant layer 19, a second tensile armor layer 20, and an outer protective layer 21 from the inside to the outside (please refer to Figure 4 ).

[0036] Please refer to Figure 2 , the outer casing 1 is an annular structure arranged axially symmetrically. The cross-section of the part located outside the marine composite flexible pipeline 3 is in a shape similar to a "convex", including a first vertical arm 4 and a second vertical arm 6 arranged parallel to the radial direction of the marine composite flexible pipeline 3, and a first horizontal arm 5 and a second horizontal arm 7 arranged parallel to the axial direction of the marine composite flexible pipeline 3. A first cavity 24 is jointly defined among the first horizontal arm 5, the second vertical arm 6, and the second horizontal arm 7. A through-threaded hole 8 is formed on the first vertical arm 4.

[0037] Please refer to Figure 3 , the inner casing 2 is also an annular structure arranged axially symmetrically. The cross-section of the part located outside the marine composite flexible pipeline 3 is in a shape similar to a "mountain", including a third horizontal arm 11 and a fourth horizontal arm 13 arranged parallel to the axial direction of the marine composite flexible pipeline 3, and a third vertical arm 9 and a fourth vertical arm 10 arranged parallel to the radial direction of the marine composite flexible pipeline 3. The third vertical arm 9 and the fourth vertical arm 10 are in a stepped shape with a thinner upper part and a thicker lower part. The lower end of the fourth vertical arm 10 is integrally connected to the third horizontal arm 11. A fifth vertical arm 12 is provided on each of the third horizontal arms 11 on both sides of the fourth vertical arm 10. A through-threaded hole 8 is also formed on the third vertical arm 9.

[0038] Please refer to Figure 4 , the outer casing 1 is arranged outside the inner casing 2, and the third vertical arm 9 of the inner casing 2 extends into the first vertical arm 4 of the outer casing 1 and the two are firmly connected by bolts through the first threaded hole 8. A first termination ring 25 is arranged adjacent to the outside of the third horizontal arm 11 of the inner casing 2, and the skeleton layer 14 bends downward and terminates at the first termination ring 25. A second termination ring 26 is arranged adjacent to the outside of the fifth vertical arm 12 of the inner casing 2, and the compression armor layer 16 and the first wear-resistant layer 17 also bend downward and terminate at the second termination ring 26. The lining layer 15 bends downward and its end extends into the fifth vertical arm 12 of the inner casing 2. The second wear-resistant layer 19 and the outer protective layer 21 bend upward and terminate at the end of the second horizontal arm 7 of the outer casing 1. The first tensile armor layer 18 and the second tensile armor layer 20 bend upward and their ends extend into the first cavity 24 and are terminated inside the first cavity 24.

[0039] In the above-mentioned embodiment, preferably, please continue to refer to Figure 4, a grease injection hole 23 penetrating radially is formed on the first cross arm 5 of the outer jacket 1, and the grease injection hole 23 communicates with the first cavity 24. Epoxy resin is injected into the first cavity 24 for potting and filling to fix the first tensile armor layer 18 and the second tensile armor layer 20 in the first cavity 24, thereby improving the tensile performance of the quick - connection fitting.

[0040] In the above - mentioned embodiment, preferably, when the ends of the first tensile armor layer 18 and the second tensile armor layer 20 extend into the first cavity 24, the ends of the two are U - shaped bent towards the end of the second cross arm 7 of the outer jacket 1 and are fixedly connected to the first cross arm 5 of the outer jacket 1 using the first fixing member 22. Through the above - mentioned arrangement, not only is the contact area between the tensile armor layer and the epoxy resin increased, the separation and failure of the tensile armor layer and the epoxy resin are avoided, but also the tensile performance of the quick - connection fitting is improved, effectively enhancing the safety during the operation of the equipment.

[0041] In the above - mentioned embodiment, preferably, a second cavity is jointly defined between the fourth vertical arm 10, the third cross arm 11, and the fifth vertical arm 12 of the inner jacket 2 and the first cross arm 5 and the second cross arm 7 of the outer jacket 1. A wedge - shaped block component 28 is arranged in the second cavity 24. The wedge - shaped block component 28 includes a block portion and a pointed end portion. The block portion is fixed by the fourth vertical arm 10, the third cross arm 11, the fifth vertical arm 12 of the inner jacket 2 and the first cross arm 5 of the outer jacket 1. The outer side of the block portion is in direct contact with the first tensile armor layer 18, and the pointed end portion is embedded in the gap between the first wear - resistant layer 17 and the first tensile armor layer 18, and the inner side of the pointed end portion is in direct contact with the first wear - resistant layer 17. Through the above - mentioned arrangement, the structure of the wedge - shaped block component 28, in combination with the structural characteristics of the outer jacket 1 and the inner jacket 2, can firmly fix the marine composite flexible pipe 3 in the quick - connection fitting. At the same time, the contact area between the block portion of the wedge - shaped block component 28 and the first tensile armor layer 18 can increase the friction force, providing certain reinforcement for the axial tensile resistance performance of the marine composite flexible pipe 3.

[0042] In the above - mentioned embodiment, preferably, a first sealing ring 27 is provided on the outer side of the inner lining layer 15 and at the ends of the compressive armor layer 16 and the first wear - resistant layer 17. At the same time, a second sealing ring 29 is provided between the outer side of the pointed end portion and the inner side of the first tensile armor layer 18. Through the above - mentioned arrangement, the first sealing ring 27 and the second sealing ring 28 can effectively seal the inner lining layer 15 and the compressive armor layer 16, preventing seawater leakage and internal medium leakage, and ensuring the safety and reliability of the marine composite flexible pipe 3.

[0043] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit them; although the present application has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that they can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements on some or all of the technical features; and these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present application, and they should all be covered within the scope of the claims and the specification of the present application. In particular, as long as there is no structural conflict, the various technical features mentioned in each embodiment can be combined in any way. The present application is not limited to the specific embodiments disclosed in the text, but includes all technical solutions falling within the scope of the claims.

Claims

1. A quick-connect fitting for a marine composite flexible pipe, suitable for connecting between two sections of marine composite flexible pipes, characterized in that, The quick-connect fitting includes: An outer jacket, which is an annular structure arranged axially symmetrically. The cross-section of its outer part located on the outer side of the marine composite flexible pipe is in a shape similar to a "convex", including a first vertical arm and a second vertical arm arranged parallel to the radial direction of the marine composite flexible pipe, and a first horizontal arm and a second horizontal arm arranged parallel to the axial direction of the marine composite flexible pipe. A first cavity is jointly defined among the first horizontal arm, the second vertical arm, and the second horizontal arm; An inner jacket, which is also an annular structure arranged axially symmetrically. The cross-section of its outer part located on the outer side of the marine composite flexible pipe is in a shape similar to a "mountain", including a third horizontal arm and a fourth horizontal arm arranged parallel to the axial direction of the marine composite flexible pipe, and a third vertical arm and a fourth vertical arm arranged parallel to the radial direction of the marine composite flexible pipe. The third vertical arm and the fourth vertical arm are in a stepped shape with a thinner upper part and a thicker lower part. The lower end of the fourth vertical arm is integrally connected to the third horizontal arm. A fifth vertical arm is provided on each of the third horizontal arms located on both sides of the fourth vertical arm; The outer jacket is arranged on the outer side of the inner jacket, and the third vertical arm of the inner jacket extends into the first vertical arm of the outer jacket and is fixedly connected thereto; a first termination ring is arranged adjacent to the outer side of the third horizontal arm of the inner jacket, and the skeleton layer of the marine composite flexible pipe bends downward and terminates at the first termination ring; a second termination ring is arranged adjacent to the outer side of the fifth vertical arm of the inner jacket, and the compressive armor layer and the first wear-resistant layer of the marine composite flexible pipe also bend downward and terminate at the second termination ring; the inner liner layer of the marine composite flexible pipe bends downward and its end extends into the fifth vertical arm of the inner jacket, the second wear-resistant layer and the outer protective layer of the marine composite flexible pipe bend upward and terminate at the end of the second horizontal arm of the outer jacket, and the first tensile armor layer and the second tensile armor layer of the marine composite flexible pipe bend upward and their ends extend into the first cavity and are terminated in the first cavity.

2. The quick-connect fitting according to claim 1, characterized in that, A grease injection hole penetrating radially is formed on the first horizontal arm of the outer jacket, and the grease injection hole communicates with the first cavity. Epoxy resin is injected into the first cavity for potting and filling to fix the first tensile armor layer and the second tensile armor layer in the first cavity.

3. The quick connector fitting according to claim 1, characterized in that, When the ends of the first tensile armor layer and the second tensile armor layer extend into the first cavity, the ends of the two are bent into a U shape towards the end of the second horizontal arm of the outer jacket and are fixedly connected to the first horizontal arm of the outer jacket using a first fixing member.

4. The quick-connect fitting according to claim 1, characterized in that, A second cavity is jointly defined among the fourth vertical arm, the third horizontal arm, and the fifth vertical arm of the inner jacket and the first horizontal arm and the second horizontal arm of the outer jacket. A wedge-shaped block component is arranged in the second cavity. The wedge-shaped block component includes a block part and a pointed end part. The block part is fixed by the fourth vertical arm, the third horizontal arm, the fifth vertical arm of the inner jacket, and the first horizontal arm of the outer jacket. The outer side of the block part is in direct contact with the first tensile armor layer, and the pointed end part is embedded in the gap between the first wear-resistant layer and the first tensile armor layer, and the inner side of the pointed end part is in direct contact with the first wear-resistant layer.

5. The quick connector fitting according to claim 4, characterized in that, A first sealing ring is provided on the outer side of the inner lining layer, at the ends of the compressive armor layer and the first wear-resistant layer. At the same time, a second sealing ring is provided between the outer side of the pointed end portion and the inner side of the first tensile armor layer.

6. The quick-connect fitting according to claim 1, wherein, Through holes are formed in the first vertical arm of the outer shell and the third vertical arm of the inner shell, and the first vertical arm of the outer shell and the third vertical arm of the inner shell are tightly connected by a second fixing member passing through the through holes.

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