A mounting fitting for a stainless steel corrugated hose for gas delivery

Abstract

The utility model discloses a special installation pipe fitting for stainless steel corrugated hose for gas delivery, which is designed based on GB / T26002-2025 standard and used for connecting indoor gas delivery pipeline of commercial and residential users. The pipe fitting is composed of a threaded connecting piece, a long-life sealing gasket, a fastening snap ring and a compression sleeve. Except the sealing gasket, the rest components are made of metal material, which can form low-resistance electrical connection of the gas pipeline and reduce the risk of failure caused by leakage of the burner. The fastening snap ring is connected at three equal points of a circular ring. After installation and fastening, the point connection points are automatically separated, which makes the pipe fitting not be disassembled again. This can prevent users from disassembling the pipe fitting privately and causing safety accidents, and ensure the reliability and safety of the connection of the gas delivery pipeline.

Description

Technical Field

[0001] This utility model relates to the field of gas transmission equipment technology, specifically to an installation fitting for a stainless steel corrugated flexible hose used for gas transmission. Background Technology

[0002] In the field of urban gas transmission, the reliability and safety of gas pipeline connections are of paramount importance. Currently, some parts of existing gas pipeline installation fittings in the industry are made of non-metallic materials. This design flaw prevents the gas pipeline from forming an effective electrical connection. When a combustion appliance in the pipeline experiences an electrical fault, the metallic gas pipeline is highly susceptible to electrical (spark) breakdown or overheating, which can lead to gas leaks and ultimately cause safety accidents, seriously threatening the lives and property of users and failing to meet the safety requirements of gas transmission. Utility Model Content

[0003] The purpose of this utility model is to provide an installation fitting specifically for stainless steel corrugated hoses used for gas transmission.

[0004] To achieve the above objectives, this utility model provides the following technical solution: An installation fitting for a stainless steel corrugated flexible hose for gas transmission includes a threaded connector, a sealing gasket, a retaining ring, and a compression sleeve. The threaded connector, retaining ring, and compression sleeve are all made of metal, except for the sealing gasket, which is made of non-metallic material. The sealing gasket is installed into the sealing groove of the threaded connector, ensuring that the sealing gasket is completely in contact with the groove wall. Then, the retaining ring is placed on the designated installation position of the threaded connector. Finally, the compression sleeve is placed on the outside of the retaining ring.

[0005] Specifically, the threaded connector has a threaded structure, which serves as a basic connecting component and is used to connect with stainless steel corrugated hoses or gas transmission pipelines.

[0006] Specifically, the fastening ring is a circular ring with three equally divided points connected, and it is in an inner-outer relationship with the clamping sleeve.

[0007] Specifically, the clamping sleeve, through its assembly and cooperation with the threaded connector, transmits axial pressure to the retaining ring during installation, thereby enabling the retaining ring to secure the pipeline connection.

[0008] The beneficial effects of this utility model are as follows: This application employs an all-metal structure (excluding seals) to create a low-resistance electrical connection in the gas transmission pipeline, effectively preventing electrical breakdown or overheating caused by appliance leakage and reducing the risk of gas leaks. The circular, three-point connection design of the fastening ring automatically separates the connection points after installation stress, preventing secondary disassembly and avoiding safety accidents caused by unauthorized user disassembly, thus ensuring the long-term reliability of the pipeline connection. This fitting is designed based on the GB / T26002–2025 standard, meeting the specifications for urban gas transmission pipeline connections, and is suitable for commercial and residential applications, possessing broad application value.

[0009] The above description is only an overview of the technical solution of this utility model. In order to better understand the technical means of this utility model and to implement it in accordance with the contents of the specification, the preferred embodiments of this utility model are described in detail below with reference to the accompanying drawings. Attached Figure Description

[0010] Figure 1 This is a schematic diagram of the exploded structure shown in this utility model; Figure 2 This is a schematic diagram of the overall structure of this utility model.

[0011] Reference numerals: 1. Threaded connector; 2. Sealing gasket; 3. Fastening retaining ring; 4. Compression sleeve. Detailed Implementation

[0012] The technical solution of this utility model will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0013] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0014] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0015] Furthermore, the technical features involved in the different embodiments of this utility model described below can be combined with each other as long as they do not conflict with each other.

[0016] like Figure 1 and Figure 2 As shown in the figure, this embodiment provides an installation fitting specifically for stainless steel corrugated hoses used for gas transmission. Designed based on the GB / T26002–2025 standard, it is used for reliable connections in urban gas transmission pipelines. The specific structure and implementation method are as follows: (I) Component Composition and Characteristics Threaded connector 1: Made of metal, it serves as the basic connection and support structure for pipe fittings. It is used to connect with gas transmission pipelines or stainless steel corrugated hoses to ensure the stability of the connection and the strength of the foundation, while also providing an installation carrier for other components.

[0017] Sealing gasket 2: A non-metallic sealing component installed at the corresponding sealing position of threaded connector 1 to fill the connection gap, achieve a sealing effect during gas transmission, prevent gas leakage, and ensure the reliability of pipeline sealing.

[0018] Fastening clasp 3: Made of metal, its overall shape is designed as a circular ring with three equally divided points for connection. The key feature of this structure is that after installation, tightening, and application of force, the point connections on the clasp will automatically separate, preventing the clasp from returning to its initial connection state and thus limiting the secondary disassembly of the pipe fitting.

[0019] Compression sleeve 4: Made of metal material, it is used in conjunction with the fastening ring 3 during installation. It applies pressure to the fastening ring 3 through external force, which helps the fastening ring 3 to achieve the fastening effect of the pipeline connection, while ensuring the fit between the components and enhancing the overall connection stability.

[0020] (II) Installation Steps Component pretreatment: Inspect the appearance of threaded connector 1, sealing gasket 2, fastening ring 3, and compression sleeve 4 to ensure there are no defects such as damage or deformation that would affect installation and use. Clean impurities from the connection surfaces of each component to ensure that the connection surfaces are clean.

[0021] Preliminary assembly: Install the sealing gasket 2 into the sealing groove of the threaded connector 1, ensuring that the sealing gasket 2 is completely in contact with the groove wall; then, put the fastening ring 3 on the designated installation position of the threaded connector 1, ensuring that the circular three-point connection structure of the fastening ring 3 is complete; finally, put the clamping sleeve 4 on the outside of the fastening ring 3 to complete the preliminary assembly of the component.

[0022] Pipeline connection and fastening: Connect the pre-assembled pipe fittings to the stainless steel corrugated hose and gas transmission pipeline. Rotate the front connecting thread with a tool to achieve a threaded connection between the pipe fitting and the pipeline. During the connection process, continuously apply external force to move the clamping sleeve 4 towards the fastening ring 3, apply pressure to the fastening ring 3 until the point connection point of the fastening ring 3 automatically separates due to the force. At this time, the pipe fitting and the pipeline are fastened and cannot be disassembled again.

[0023] (III) Core Performance Verification Electrical connectivity test: The overall resistance of the gas transmission pipeline including this fitting is measured using testing tools. The results show that the pipeline forms an electrical connection with extremely low resistance, which can effectively reduce the risk of failure caused by leakage of the combustion appliance and meet the requirements for safe use.

[0024] Anti-disassembly performance verification: After installation, the pipe fitting was disassembled using conventional tools. Since the point connection of the fastening ring 3 was separated, the initial connection state could not be restored, and the pipe fitting could not be disassembled. This proves that the anti-secondary disassembly function is effective and can prevent users from disassembling it without authorization, which could cause safety accidents.

[0025] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0026] The embodiments described above are merely illustrative of several implementations of this utility model, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the utility model patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and these all fall within the protection scope of this utility model. Therefore, the protection scope of this utility model patent should be determined by the appended claims.

Claims

1. A mounting fitting for a stainless steel corrugated hose for gas delivery, characterized by, The device includes a threaded connector, a sealing gasket, a retaining ring, and a compression sleeve. The threaded connector, retaining ring, and compression sleeve are all made of metal, except for the sealing gasket, which is made of non-metallic material. The sealing gasket is installed into the sealing groove of the threaded connector, ensuring that the sealing gasket is completely in contact with the groove wall. Then, the retaining ring is placed on the designated installation position of the threaded connector. Finally, the compression sleeve is placed on the outside of the retaining ring.

2. The installation fitting for a stainless steel corrugated hose for gas delivery according to claim 1, characterized by The threaded connector has a threaded structure and serves as a basic connecting component. Its threaded structure is used to connect with stainless steel corrugated hoses or gas transmission pipelines.

3. The installation fitting for a stainless steel corrugated gas delivery hose according to claim 1, characterized in that The fastening ring is a circular ring with three equally divided points connected, and it is in an inner-outer relationship with the clamping sleeve.

4. The installation fitting for a stainless steel corrugated gas delivery hose according to claim 1, characterized in that, The clamping sleeve, through its assembly and engagement with the threaded connector, transmits axial pressure to the retaining ring during installation, thereby securing the pipeline connection with the retaining ring.

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