Metal-clad flexible pipe for gas appliance connection

Abstract

The utility model relates to the field of gas pipe especially relates to a metal coated hose for gas appliance connection. The metal coated hose for gas appliance connection includes pipe body and the joint of pipe body both ends, both ends joint is first joint and second joint respectively, and first joint is internal thread joint, and second joint is flexible reduced joint, the outer hexagonal head side surface of first joint is equipped with axial antiskid line, and the outer wall of second joint is equipped with annular antiskid stripe. The metal coated hose for gas appliance connection provided by the utility model has axial antiskid line on the outer hexagonal head side surface of first joint, and the outer wall of second joint is equipped with annular antiskid stripe, when installing operation, whether using wrench or bare-handed operation can obtain enough friction, avoids skidding, and significantly improves installation efficiency. Meanwhile, second joint is flexible reduced joint, and its flexibility can adapt to different installation angles, and the reduced design is convenient for adapting to small-caliber connection end, and further improves the flexibility and convenience of installation.

Description

Technical Field

[0001] This utility model relates to the field of gas pipes, and in particular to a metal-coated flexible hose for connecting gas appliances. Background Technology

[0002] In the gas transmission industry, the ease of installation, safety, and durability of gas pipes have always been key concerns. Traditional gas pipe installations often suffer from cumbersome procedures due to poorly designed joints, resulting in significant manpower and time consumption. For example, some joints require complex tools and multiple steps to complete, making operation even more difficult in confined spaces. Furthermore, the materials used in ordinary gas pipes are prone to aging and damage when exposed to gas corrosion and complex environments. Rubber joints, in particular, can deteriorate after prolonged contact with gas, increasing the risk of gas leaks.

[0003] Therefore, it is necessary to provide a new type of metal-coated flexible hose for connecting gas appliances to solve the above-mentioned technical problems. Utility Model Content

[0004] To overcome the shortcomings of the existing technology, a metal-coated flexible hose for connecting gas appliances is provided to solve the above-mentioned problems.

[0005] The gas appliance connection metal-coated flexible hose provided by this utility model includes: a pipe body and connectors at both ends of the pipe body, wherein the two connectors are a first connector and a second connector, the first connector is an internal thread connector, and the second connector is a flexible reduction connector; the outer hexagonal head of the first connector is provided with axial anti-slip texture, and the outer wall of the second connector is provided with annular anti-slip stripes; the pipe body is composed of an inner tube, a braided layer and an outer tube, and the connection parts of the first connector and the second connector with the pipe body are all tightly wrapped and combined into one piece by a molding process.

[0006] Preferably, the internal thread of the first connector is a continuous helical structure.

[0007] Preferably, the maximum outer diameter of the second connector is smaller than the minimum outer diameter of the first connector, and the annular anti-slip stripes on its outer wall are a continuous raised structure.

[0008] Preferably, the first connector is made of brass and its surface is passivated.

[0009] Preferably, the second connector is made of EPDM rubber, which is resistant to gas corrosion, and the diameter of its internal ventilation channel is the same as the inner diameter of the inner tube.

[0010] Compared with related technologies, the metal-coated flexible hose for connecting gas appliances provided by this utility model has the following advantages: The first connector of this invention has axial anti-slip grooves on the outer hexagonal head side, and the second connector has annular anti-slip stripes on its outer wall. During installation, whether using a wrench or by hand, sufficient friction can be obtained to prevent slippage and significantly improve installation efficiency. Meanwhile, the second connector is a flexible reduction connector, whose flexibility can adapt to different installation angles. The reduction design facilitates compatibility with small-diameter connection ends, further enhancing the flexibility and convenience of installation. Attached Figure Description

[0011] Figure 1 A schematic diagram of a preferred embodiment of the metal-coated flexible hose for connecting gas appliances provided by this utility model; Figure 2 for Figure 1 The diagram shown is a front view of the structure. Figure 3 for Figure 1 The diagram shows the structure of the tube. Figure 4 This is a schematic diagram of a double second connector structure.

[0012] The following are the labels in the diagram: 1. Pipe body; 11. Inner tube; 12. Braided layer; 13. Outer tube; 2. First connector; 21. Anti-slip texture; 3. Second connector; 31. Anti-slip stripe. Detailed Implementation

[0013] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present utility model and are not intended to limit the present utility model.

[0014] Example 1 The specific implementation of this utility model will be described in detail below with reference to specific embodiments.

[0015] This utility model provides a metal-coated flexible hose for connecting gas appliances. The metal-coated flexible hose for connecting gas appliances includes: a pipe body 1 and connectors at both ends of the pipe body 1. The two connectors are a first connector 2 and a second connector 3, respectively. The first connector 2 is an internal thread connector, and the second connector 3 is a flexible reduction connector. The outer hexagonal head of the first connector 2 is provided with axial anti-slip texture 21, and the outer wall of the second connector 3 is provided with annular anti-slip stripes 31. The pipe body 1 is composed of an inner tube 11, a braided layer 12, and an outer tube 13. The connection parts of the first connector 2 and the second connector 3 with the pipe body 1 are all tightly wrapped and combined into one piece by a molding process.

[0016] It should be noted that: the pipe body 1 consists of an inner pipe 11, a braided layer 12, and an outer pipe 13. The inner pipe 11 ensures the airtightness and corrosion resistance of the gas transmission, the braided layer 12 enhances the overall structural strength of the pipe body to resist external impacts, and the outer pipe 13 protects the internal structure and delays aging. The first connector 2 at both ends is an internal thread connector, which facilitates quick docking with the corresponding external threaded parts. The axial anti-slip grooves 21 on the side of its hexagonal head increase the friction when operating the wrench and prevent slippage to improve installation convenience. The second connector 3 is a flexible reduction connector. Its flexibility allows it to adapt to different installation angles, and the reduction design can match small-diameter connection ends. The annular anti-slip stripes 31 on its outer wall enhance the friction when gripping or operating tools, further improving installation convenience. At the same time, the connection parts of the first connector 2, the second connector 3, and the pipe body 1 are tightly wrapped and combined into one piece by the molding process, which effectively ensures the sealing and structural stability of the connection and avoids gas leakage.

[0017] In an embodiment of this utility model, the internal thread of the first connector 2 is a continuous helical structure.

[0018] It should be noted that the internal thread of the first connector 2 is a continuous helical structure, a design that plays a crucial role. The continuous helical shape allows for a tighter engagement between the first connector 2 and the corresponding external threaded component during connection, avoiding gaps caused by thread interruptions. This significantly improves the sealing performance after connection and reduces the risk of gas leakage. Simultaneously, the continuous helical structure ensures more even stress distribution between the threads, better withstanding external forces during installation and use, enhancing connection stability, and ensuring the long-term reliability of the connection between the first connector 2 and its matching components. This provides strong support for the safe and efficient use of the gas pipe.

[0019] In an embodiment of this utility model, the maximum outer diameter of the second connector 3 is smaller than the minimum outer diameter of the first connector 2, and the annular anti-slip stripes 31 on its outer wall are a continuous raised structure.

[0020] It should be noted that the maximum outer diameter of the second connector 3 is smaller than the minimum outer diameter of the first connector 2. This design allows the second connector 3 to more easily adapt to small-diameter connection ports, significantly improving installation flexibility and convenience in confined spaces or scenarios with strict limitations on connection dimensions, and avoiding installation difficulties caused by size mismatch. Simultaneously, the annular anti-slip stripes 31 on its outer wall are a continuous raised structure. This continuous raised shape greatly increases the friction between the hand or tool and the outer wall of the second connector 3, effectively preventing slippage whether installing by hand or using tools, ensuring a more stable and efficient installation process, and further guaranteeing the reliability of the installation operation.

[0021] In an embodiment of this utility model, the first connector 2 is made of brass and its surface is passivated.

[0022] It should be noted that the first connector 2 is made of brass, a material chosen for several advantages. Brass possesses excellent thermal conductivity and corrosion resistance, adapting to various corrosive factors that may exist in the gas transmission environment, thus extending the service life of the first connector 2. Simultaneously, brass has moderate hardness and good ductility, facilitating the machining of precise internal thread structures to ensure a tight connection with corresponding components. Furthermore, its surface undergoes passivation treatment, forming a dense oxide film. This oxide film further enhances the corrosion resistance and wear resistance of the first connector 2, effectively resisting the erosion of its surface by moisture, impurities, and other external environmental factors. It also reduces wear caused by friction during installation and use, maintaining the structural integrity and connection performance of the connector, providing a solid guarantee for the safe and stable operation of the gas pipeline.

[0023] In an embodiment of this utility model, the second connector 3 is made of EPDM rubber that is resistant to gas corrosion, and the diameter of its internal ventilation channel is the same as the inner diameter of the inner tube 11.

[0024] It should be noted that the second connector 3 is made of EPDM rubber, a material highly resistant to gas corrosion. This material selection is particularly targeted. EPDM rubber has excellent resistance to gas corrosion, capable of resisting the erosion of various components in gas over a long period, ensuring that the connector does not deteriorate during long-term use and maintaining structural stability. Simultaneously, this material possesses good flexibility and elasticity, allowing the second connector 3 to better adapt to angle adjustments during installation, improving installation convenience. Furthermore, its internal venting channel diameter is consistent with the inner diameter of the inner pipe 11, ensuring that there are no significant abrupt changes in pipe diameter when gas flows between the pipe body 1 and the second connector 3. This reduces gas flow resistance, avoids turbulence or pressure loss caused by inconsistent channel dimensions, ensures smooth and stable gas delivery, and further enhances the performance of the gas pipe.

[0025] Example 2 This utility model embodiment also provides a metal-coated flexible hose for connecting gas appliances. Unlike embodiment one, both ends of the hose body 1 have second connectors 3, and the structural characteristics of the connectors at both ends are consistent. Each second connector 3 is a flexible reducing connector, with its maximum outer diameter smaller than the minimum outer diameter of the first connector 2 in embodiment one. The outer wall is provided with continuously raised annular anti-slip stripes 31, and the diameter of the internal ventilation channel is completely consistent with the inner diameter of the inner tube 11. The structure of the hose body 1 is the same as in embodiment one, still consisting of an inner tube 11, a braided layer 12, and an outer tube 13. The connection points between the second connectors 3 at both ends and the hose body 1 are all processed by molding, so that the inner tube 11, the braided layer 12, and the outer tube 13 are tightly wrapped and combined into one unit, ensuring the sealing and structural stability of the connection points. The second connector, as a flexible reduction connector, is flexible enough to adapt to different installation angles and meet the turning requirements in complex scenarios. Its reduction design makes its maximum outer diameter smaller than that of the first connector, which can easily fit small-diameter connection ends and make installation in narrow spaces more flexible. The annular anti-slip stripes on the outer wall are a continuous raised structure, which can provide sufficient friction whether operated by hand or with tools, effectively preventing slippage and significantly improving installation efficiency. The diameter of the internal ventilation channel is consistent with the inner diameter of the inner pipe, which can ensure smooth gas flow and reduce resistance and pressure loss. Moreover, the connection part with the pipe body is tightly wrapped and combined with the inner pipe, braided layer and outer pipe through molding process, which ensures the sealing of the connection and structural stability, and comprehensively improves the ease of installation, adaptability and safety of use.

[0026] The working principle of the metal-coated flexible hose for connecting gas appliances provided by this utility model is as follows: When gas needs to be transported, the gas first enters the inner tube 11 of the pipe body 1 from the gas source end. Due to its excellent airtightness and corrosion resistance, the inner tube 11 ensures that the gas will not leak or be corroded internally during transport. The braided layer 12 of the pipe body 1 provides structural strength support for the entire pipe body, preventing damage from external impacts. The outer tube 13 protects the inner tube 11 and the braided layer 12 from the outside, delaying aging. The gas flows stably within the pipe body 1 to the first connector 2. Since the first connector 2 is an internally threaded connector, it is tightly connected to the corresponding externally threaded component through a continuous spiral internal thread structure, achieving a stable input of gas from the gas source end to the gas pipe. When the gas is delivered to the second connector 3, the flexibility of the second connector 3 can adapt to the slight displacement and angle changes that may occur during the gas delivery process to a certain extent, ensuring a stable connection; the diameter of its internal ventilation channel is consistent with the inner diameter of the inner pipe 11, so that the gas can flow out of the gas pipe smoothly and unobstructed, and be delivered to the equipment end that needs gas. Throughout the process, all components work together to ensure the safe, stable and efficient delivery of gas.

[0027] The above description is merely an embodiment of this utility model and does not limit the patent scope of this utility model. Any equivalent structural or procedural transformations made based on the content of this utility model specification and drawings, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this utility model.

Claims

1. A metal-coated flexible hose for connecting gas appliances, comprising a hose body (1) and connectors disposed at both ends of the hose body (1), characterized in that: The two end connectors are a first connector (2) and a second connector (3), respectively. The first connector (2) is an internal thread connector, and the second connector (3) is a flexible shrink connector. The outer hexagonal head of the first connector (2) is provided with axial anti-slip texture (21), and the outer wall of the second connector (3) is provided with annular anti-slip stripes (31). The tube body (1) is composed of an inner tube (11), a braided layer (12) and an outer tube (13), and the connection parts of the first joint (2) and the second joint (3) with the tube body (1) are all tightly wrapped and combined into one by molding process.

2. The metal-coated flexible hose for connecting gas appliances according to claim 1, characterized in that, The internal thread of the first connector (2) is a continuous spiral structure.

3. The metal-coated flexible hose for connecting gas appliances according to claim 2, characterized in that, The maximum outer diameter of the second connector (3) is smaller than the minimum outer diameter of the first connector (2), and the annular anti-slip stripes (31) on its outer wall are a continuous raised structure.

4. The metal-coated flexible hose for connecting gas appliances according to claim 3, characterized in that, The first connector (2) is made of brass and its surface is passivated.

5. The metal-coated flexible hose for connecting gas appliances according to claim 4, characterized in that, The second connector (3) is made of EPDM rubber, which is resistant to gas corrosion, and the diameter of its internal ventilation channel is consistent with the inner diameter of the inner tube (11).

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