Mounting pipe fitting special for stainless steel corrugated hose for fuel gas conveying

Abstract

The invention discloses a special mounting pipe fitting for a stainless steel corrugated hose for fuel gas conveying, which is designed based on the GB / T26002-2025 standard and is used for indoor fuel gas conveying pipeline connection of commercial and residential users. The pipe fitting is composed of a threaded connecting piece, a long-service-life sealing gasket, a fastening clamping ring and a pressing sleeve, all the parts except a sealing piece are made of metal materials, low-resistance electrical communication can be formed on a gas pipeline, and the fault risk caused by electric leakage of a combustion appliance is reduced. Wherein the fastening clamping rings are connected in an annular trisection point mode, point-shaped connecting points are automatically separated after installation fastening stress is carried out, secondary disassembly of the pipe fitting is achieved, safety accidents caused by privately disassembling of a user are prevented, and reliability and safety of connection of the fuel gas conveying pipeline are guaranteed.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of gas delivery equipment, in particular to a mounting pipe fitting special for stainless steel corrugated hose for gas delivery. BACKGROUND

[0002] In the field of urban gas delivery, the connection reliability and safety of gas delivery pipeline are of great importance. The existing gas delivery pipeline mounting pipe fittings in the industry are partially made of non-metallic materials. This design defect causes the gas pipeline to fail to form an effective electrical connection. When the burner in the pipeline fails, the metal gas pipeline is prone to electrical (spark) breakdown or heating, which may cause gas leakage and even safety accidents, seriously threatening the safety of life and property, and cannot meet the safety requirements of gas delivery. SUMMARY

[0003] The present application relates to the technical field of gas delivery equipment, in particular to a mounting pipe fitting special for stainless steel corrugated hose for gas delivery.

[0004] To achieve the above-mentioned purpose, the present application provides the following technical scheme: A mounting pipe fitting special for stainless steel corrugated hose for gas delivery, comprising a threaded connector, a sealing gasket, a fastening ring, and a compression sleeve. The threaded connector, the fastening ring, and the compression sleeve are made of metal material, and only the sealing gasket is made of non-metallic material. The sealing gasket is installed in the sealing groove of the threaded connector to ensure that the sealing gasket completely adheres to the groove wall. Then, the fastening ring is sleeved on the designated installation position of the threaded connector. Finally, the compression sleeve is sleeved on the outside of the fastening ring.

[0005] Specifically, the threaded connector has a threaded structure, which is used as a basic connection component and its threaded structure is used to connect with the stainless steel corrugated hose or the gas delivery pipeline.

[0006] Specifically, the fastening ring is in the shape of a circular ring with three equal parts connected, and is in an inner-outer sleeving relationship with the compression sleeve.

[0007] Specifically, the compression sleeve transmits axial pressure to the fastening ring during installation by assembling with the threaded connector, so that the fastening ring realizes fastening of the pipeline connection.

[0008] The present application has the following advantages: The application forms low-resistance electrical communication of the gas conveying pipeline by adopting an all-metal (except for a sealing element) structure, effectively avoids the problem of pipeline electrical breakdown or heating caused by leakage of the burner, and reduces the risk of gas leakage. The circular ring three-equal-division point connection design of the fastening snap ring automatically separates the connection point after installation stress, realizes that the pipe fitting cannot be disassembled again, avoids safety accidents caused by user's private disassembly, and guarantees the long-term reliability of the pipeline connection. The pipe fitting is designed based on the GB / T26002-2025 standard, meets the specification requirements of the urban gas conveying pipeline connection, is suitable for commercial and residential indoor scenes, and has wide application value.

[0009] The above description is only a summary of the technical scheme of the present application, in order to more clearly understand the technical means of the present application, and can be implemented according to the content of the specification, as follows. The preferred embodiments of the present application are described in detail below with the help of the accompanying drawings. BRIEF DESCRIPTION OF DRAWINGS

[0010] Figure 1 The schematic diagram of the explosion structure shown in the present application is shown in the figure. Figure 2 The schematic diagram of the overall structure shown in the present application is shown in the figure.

[0011] Reference signs: 1, threaded connecting piece; 2, sealing gasket; 3, fastening snap ring; 4, compression sleeve. DETAILED DESCRIPTION

[0012] The technical scheme of the present application will be described in detail below with the help of the accompanying drawings. Obviously, the described embodiments are part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.

[0013] In the description of the present application, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, therefore cannot be understood as a limitation on the present application. In addition, the terms "first", "second", "third" are only for the purpose of description, and cannot be understood as indicating or implying relative importance.

[0014] In the description of the present application, it should be noted that unless otherwise explicitly specified and limited, the terms "mounting", "connection", "connecting" should be understood in a broad sense, for example, it can be fixed connection, or detachable connection, or integrally connected; it can be mechanical connection, or electrical connection; it can be directly connected, or indirectly connected through an intermediate medium, or the internal communication of two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0015] In addition, the technical features involved in the different embodiments of the application described below can be combined with each other as long as they do not conflict with each other.

[0016] As Figure 1 and Figure 2 shown, the present embodiment provides a mounting pipe fitting special for stainless steel corrugated hose for gas delivery, which is designed based on GB / T26002-2025 standard, used for reliable connection of urban gas delivery pipeline, and the specific structure and implementation are as follows: (I) Component composition and characteristics Threaded connector 1: made of metal material, as the basic connection and support structure of the pipe fitting, used to realize butt joint with the gas delivery pipeline or the stainless steel corrugated hose, to ensure the stability and basic strength of the connection, and provide installation carrier for other components.

[0017] Sealing gasket 2: a sealing component made of non-metallic material, installed at the corresponding sealing position of the threaded connector 1, used to fill the connection gap and realize the sealing effect during gas delivery, to avoid gas leakage and ensure the sealing reliability of the pipeline.

[0018] Fastening clasp 3: made of metal material, the overall shape is designed as a circular ring three-equal-point connection structure. The key feature of this structure is that after installation and fastening and applying force, the point connection points on the clasp will automatically separate, so that the clasp cannot restore the initial connection state, thereby limiting the secondary disassembly of the pipe fitting.

[0019] Pressing sleeve 4: made of metal material, used in cooperation with the fastening clasp 3 during installation, applies pressure to the fastening clasp 3 through external force, to assist the fastening clasp 3 to realize the fastening effect of the pipeline connection, and at the same time to ensure the fit between the components and enhance the overall connection stability.

[0020] (II) Installation steps Component pretreatment: check the appearance state of the threaded connector 1, the sealing gasket 2, the fastening clasp 3 and the pressing sleeve 4, to ensure that there is no damage, deformation and other defects that affect installation and use, and clean the impurities on the connecting surface of each component to ensure the cleanliness of the connecting surface.

[0021] Preliminary assembly: install the sealing gasket 2 into the sealing groove of the threaded connector 1, make sure the sealing gasket 2 completely fits the groove wall; then put the fastening ring 3 on the designated installation position of the threaded connector 1, make sure the circular ring three-equal-part connection structure of the fastening ring 3 is complete; finally, put the compression sleeve 4 outside the fastening ring 3, complete the preliminary assembly of the components.

[0022] Pipeline docking and fastening: dock the preliminarily assembled pipe with the stainless steel corrugated hose and the gas delivery pipeline, rotate the front end connecting thread through a tool, so that the pipe and the pipeline are threadedly connected; during the connection process, continuously apply external force to make the compression sleeve 4 move towards the fastening ring 3, apply pressure to the fastening ring 3, until the point-like connection points of the fastening ring 3 automatically separate due to stress, at this time the pipe and the pipeline complete fastening connection, and cannot be disassembled again.

[0023] (Three) Core performance verification Electrical continuity detection: use a detection tool to measure the overall resistance value of the gas delivery pipeline containing the pipe, the result shows that the pipeline forms a very low electrical resistance value of electrical continuity, which can effectively reduce the risk of failure caused by leakage of the burner, and meets the safety use requirements.

[0024] Anti-disassembly performance verification: after installation, try to disassemble the pipe using conventional tools, because the point-like connection points of the fastening ring 3 have been separated, the initial connection state cannot be restored, and the pipe cannot be disassembled, which proves that the anti-second disassembly function is effective, and can prevent users from causing safety accidents by disassembling privately.

[0025] The technical features of the above-described embodiments can be combined in any manner. To make the description concise, not all possible combinations of the technical features in the above-described embodiments are described, but as long as the combinations of the technical features do not exist contradictory, they should be considered as the scope of the description.

[0026] The above-described embodiments only express several implementation manners of the present application, and the description is more specific and detailed, but it should not be understood as a limitation on the scope of the patent. It should be pointed out that for ordinary skilled in the art, without departing from the concept of the present application, a number of modifications and improvements can be made, which are within the scope of the present application. Therefore, the protection scope of the patent of the present application should be subject to the appended claims.

Claims

1. A mounting fitting for a stainless steel corrugated hose for gas delivery, characterized by, Including threaded connection, sealing gasket, fastening ring, compression sleeve, the threaded connection, fastening ring, compression sleeve are made of metal material, only the sealing gasket is non-metallic material, the sealing gasket is installed in the sealing groove of threaded connection, ensure that the sealing gasket completely fits the groove wall, then the fastening ring is sleeved on the designated installation position of threaded connection, finally the compression sleeve is sleeved on the outside of fastening ring.

2. The stainless steel corrugated hose for gas delivery special purpose fitting according to claim 1, characterized in that, The threaded connection has a threaded structure, which is used as a basic connecting component and is used for docking with a stainless steel corrugated hose or a gas conveying pipeline.

3. The stainless steel corrugated hose for gas service according to claim 1, characterized in that, The fastening ring is in the form of a circular annular three-equal-point connecting structure and is in an inner-outer sleeving relationship with the compression sleeve.

4. The stainless steel corrugated hose for gas service according to claim 1, characterized by The compression sleeve transmits axial pressure to the fastening ring during installation by assembly with the threaded connection, so that the fastening ring is fastened to the pipeline connection.

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