A steel pipe butt joint device with built-in sealing structure

Abstract

The utility model discloses a kind of steel pipe butt joint devices with built-in sealing structure, including butt joint main body, built-in sealing assembly, locking mechanism, positioning assembly, the butt joint main body is hollow cylindrical structure, inside is equipped with the butt joint cavity of through, the both ends of the butt joint cavity are respectively used for inserting two steel pipes to be butt joint;Built-in sealing assembly is fixedly installed in the middle position of butt joint cavity, built-in sealing assembly includes sealing ring seat and at least two sealing rings, sealing ring seat is annular structure, its outer circumferential surface is fixedly connected with the inner wall of butt joint cavity, the both side end surfaces of sealing ring seat are respectively set with annular sealing groove, sealing ring is embedded in annular sealing groove, and the outside end surface of sealing ring protrudes from the end surface of sealing ring seat, the utility model is designed through built-in sealing assembly, substantially improve the sealing performance of butt joint, effectively prevent fluid leakage;Meanwhile, the cooperation of locking mechanism and positioning assembly simplifies installation process, improves butt joint stability.

Description

Technical Field

[0001] This utility model relates to the field of steel pipe connection technology, specifically a steel pipe docking device with a built-in sealing structure. Background Technology

[0002] With the rapid development of industrial production and urban construction, pipeline systems are increasingly widely used in various fields. As a core component of pipeline systems, the quality of steel pipe connections directly determines the reliability of the entire system. Existing connection devices often use external sealing structures, such as gaskets in flange connections and sealing rings in clamp connections. These sealing structures are exposed to the external environment and are susceptible to corrosion, wear, and temperature changes, leading to decreased sealing performance and ultimately fluid leakage. Leakage is particularly problematic when transporting corrosive media or high-pressure fluids, not only wasting resources but also potentially causing safety accidents. Flange connections require welding of the steel pipe ends, and bolts need to be tightened one by one during installation, which is time-consuming and labor-intensive. Welded connections require professional welding equipment and technicians, and the welded joints cannot be disassembled. Later maintenance requires cutting the pipe, which increases maintenance costs and difficulty. Although some clamp-type docking devices do not require welding, the joints need to be precisely aligned during installation, and uneven force can easily occur during the tightening process, affecting installation efficiency. Existing pipe-connecting devices often use a single clamping method, such as bolt clamping or clamp clamping, when fixing steel pipes. This clamping method has limited fixing force on the steel pipe, and the steel pipe is prone to displacement when the pipeline is subjected to vibration, impact or thermal expansion and contraction, resulting in loosening at the joint. This not only affects the sealing performance, but may also cause the pipeline to fall off, causing safety hazards. Therefore, it is necessary to design a steel pipe-connecting device with a built-in sealing structure. Utility Model Content

[0003] The purpose of this invention is to provide a steel pipe docking device with a built-in sealing structure to solve the problems mentioned in the background art.

[0004] To achieve the above objectives, this utility model provides the following technical solution: a steel pipe docking device with a built-in sealing structure, comprising a docking body and a built-in sealing component; The docking body is a hollow cylindrical structure with a through docking cavity inside. The two ends of the docking cavity are respectively used to insert two steel pipes to be docked. The built-in sealing assembly is fixedly installed in the middle of the docking cavity. The built-in sealing assembly includes a sealing ring seat and at least two sealing rings. The sealing ring seat is an annular structure, and its outer circumferential surface is fixedly connected to the inner wall of the docking cavity. The two end faces of the sealing ring seat are respectively provided with annular sealing grooves. The sealing rings are embedded in the annular sealing grooves, and the outer end face of the sealing rings protrudes from the end face of the sealing ring seat for tight contact with the end of the steel pipe inserted into the docking cavity.

[0005] Preferably, it also includes a locking mechanism, which has two sets. The two sets of locking mechanisms are symmetrically arranged on the outer sides of both ends of the docking body. Each set of locking mechanisms includes an arc-shaped clamping block, an adjusting screw, and a fixed seat. The fixed seat is fixedly connected to the outer circumferential surface of the docking body. The adjusting screw passes through the fixed seat and is threadedly connected to the fixed seat. The inner end of the adjusting screw is rotatably connected to the arc-shaped clamping block. The inner arc surface of the arc-shaped clamping block is adapted to the outer circumferential surface of the steel pipe.

[0006] Preferably, it also includes a positioning component, which includes a positioning protrusion and a positioning groove. The positioning protrusion is disposed on the inner wall of the docking cavity, and the positioning groove is formed on the outer circumferential surface of the steel pipe. The positioning protrusion and the positioning groove are adapted to each other.

[0007] Preferably, the inner wall of the docking cavity is provided with an annular step, and the outer circumferential surface of the sealing ring seat is provided with an annular protrusion, the annular protrusion engaging with the annular step.

[0008] Preferably, the outer circumferential surface of the docking body is provided with reinforcing ribs, the reinforcing ribs are arranged along the axial direction of the docking body, and there are at least three reinforcing ribs, which are evenly distributed on the outer circumferential surface of the docking body.

[0009] Preferably, the outer end of the adjusting screw is provided with a knob, and the outer circumferential surface of the knob is provided with anti-slip protrusions. Beneficial effects

[0010] (1) The present invention significantly improves the sealing performance of the docking point through the design of the built-in sealing component, effectively preventing fluid leakage; at the same time, the cooperation between the locking mechanism and the positioning component simplifies the installation process and improves the docking stability.

[0011] (2) The built-in sealing component of this utility model avoids the sealing structure from being exposed to the external environment, reducing the impact of corrosion and wear on the sealing performance; the sealing ring is made of elastic material and has an annular sealing lip, which forms a tight fit with the end of the steel pipe to achieve double sealing and effectively prevent fluid leakage.

[0012] The above description is merely an overview of the technical solutions of the embodiments of this application. In order to better understand the technical means of the embodiments of this application and to implement them in accordance with the contents of the specification, and to make the above and other objects, features and advantages of the embodiments of this application more obvious and understandable, specific implementation methods of this application are described below. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the structure of this utility model; Figure 2 This is a schematic diagram of the built-in sealing component structure of this utility model; Figure 3 This is a schematic diagram of the locking mechanism of this utility model; Figure 4 This is a schematic diagram of the installation of the positioning component of this utility model. Detailed Implementation

[0014] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0015] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application pertains; the terminology used herein in the specification of the application is for the purpose of describing particular embodiments only and is not intended to limit the application; the terms “comprising” and “having”, and any variations thereof, in the specification, claims and drawings of this application are intended to cover non-exclusive inclusion.

[0016] The term "embodiment" as used herein means that a particular feature, structure, or characteristic described in connection with an embodiment may be included in at least one embodiment of this application. The appearance of the phrase "embodiment" in various places throughout the specification does not necessarily refer to the same embodiment, nor is it a separate or alternative embodiment mutually exclusive with other embodiments. It will be explicitly and implicitly understood by those skilled in the art that the embodiments described herein can be combined with other embodiments.

[0017] To enable those skilled in the art to better understand the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings.

[0018] Please see Figures 1-4This utility model discloses a steel pipe docking device with a built-in sealing structure, including a docking body 1 and a built-in sealing component; The docking body 1 is a hollow cylindrical structure with a through docking cavity inside. The two ends of the docking cavity are respectively used to insert two steel pipes 2 to be docked. The outer circumferential surface of the docking body 1 is provided with reinforcing ribs 11. The reinforcing ribs 11 are arranged along the axial direction of the docking body 1, and there are at least three reinforcing ribs 11, which are evenly distributed on the outer circumferential surface of the docking body. The reinforcing ribs can enhance the structural strength of the docking body and prevent the docking body from deforming when subjected to external forces. The built-in sealing assembly is fixedly installed in the middle of the docking cavity. The built-in sealing assembly includes a sealing ring seat 3 and at least two sealing rings 4. The sealing ring seat 3 has an annular structure, with its outer circumferential surface fixedly connected to the inner wall of the docking cavity. Annular sealing grooves 5 are respectively formed on both end faces of the sealing ring seat 3. The sealing rings 4 are embedded in the annular sealing grooves 5, with their outer end faces protruding from the end face of the sealing ring seat 3, for tight contact with the end of the steel pipe inserted into the docking cavity. The inner wall of the docking cavity has an annular step, and the outer circumferential surface of the sealing ring seat has an annular protrusion. The annular protrusion engages with the annular step, enabling rapid fixation of the sealing ring seat within the docking cavity and facilitating its disassembly and replacement.

[0019] This utility model also includes a locking mechanism, which consists of two sets symmetrically arranged on the outer sides of both ends of the docking body 1. Each set of locking mechanisms includes an arc-shaped clamping block 6, an adjusting screw 7, and a fixing seat 8. The fixing seat 8 is fixedly connected to the outer circumferential surface of the docking body 1. The adjusting screw 7 passes through the fixing seat 8 and is threadedly connected to it. The inner end of the adjusting screw 7 is rotatably connected to the arc-shaped clamping block 6. The inner arc surface of the arc-shaped clamping block 6 is adapted to the outer circumferential surface of the steel pipe 2. The outer end of the adjusting screw 7 is provided with a knob 12, and the outer circumferential surface of the knob is provided with anti-slip protrusions. When the steel pipe is inserted into the docking cavity and positioned, rotating the knob will cause the adjusting screw to move the arc-shaped clamping block towards the steel pipe until the inner arc surface of the arc-shaped clamping block is tightly fitted with the outer circumferential surface of the steel pipe, thereby fixing the steel pipe in the docking cavity. For disassembly, simply rotate the knob in the opposite direction. The operation is convenient and requires no professional tools.

[0020] Furthermore, this utility model also includes a positioning component, which includes a positioning protrusion 9 and a positioning groove 10. The positioning protrusion 9 is disposed on the inner wall of the docking cavity, and the positioning groove 10 is formed on the outer circumferential surface of the steel pipe. The positioning protrusion 9 and the positioning groove 10 are adapted to each other. This ensures that the steel pipe is quickly positioned after being inserted into the docking cavity, preventing circumferential rotation or axial displacement of the steel pipe within the docking cavity. The interference fit also enhances the stability of the positioning. During installation, the operator only needs to align the positioning groove of the steel pipe with the positioning protrusion on the inner wall of the docking cavity to accurately insert the steel pipe into the docking cavity without repeated adjustments, significantly improving installation efficiency.

[0021] Working principle: Insert the two steel pipes to be joined into the docking cavities at both ends of the docking body. During insertion, align the positioning protrusions on the inner wall of the docking cavity with the positioning grooves on the outer circumference of the steel pipe, ensuring they fit and engage, and guaranteeing that the ends of the steel pipes abut against the sealing rings of the built-in sealing components. Rotate the knobs at the outer ends of the adjusting screws in the two sets of locking mechanisms, driving the adjusting screws forward along the internal threads of the fixed base, pushing the arc-shaped clamping blocks closer to the steel pipes until the inner arc surface of the arc-shaped clamping blocks is tightly fitted against the outer wall of the steel pipes, completing the steel pipe locking.

[0022] In summary, this utility model significantly improves the sealing performance at the joint through the design of the built-in sealing component, effectively preventing fluid leakage; at the same time, the cooperation between the locking mechanism and the positioning component simplifies the installation process and improves the stability of the joint.

[0023] The above-described embodiments are only used to illustrate the technical solutions of this application, and are not intended to limit them. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this application.

Claims

1. A steel pipe docking device with a built-in sealing structure, characterized in that: Includes docking body (1) and built-in sealing assembly (13); The docking body (1) is a hollow cylindrical structure with a through docking cavity inside. The two ends of the docking cavity are used to insert two steel pipes (2) to be docked. The built-in sealing assembly (13) is fixedly installed in the middle of the docking cavity. The built-in sealing assembly (13) includes a sealing ring seat (3) and at least two sealing rings (4). The sealing ring seat (3) is an annular structure, and its outer circumferential surface is fixedly connected to the inner wall of the docking cavity. The two end faces of the sealing ring seat (3) are respectively provided with annular sealing grooves (5). The sealing rings (4) are embedded in the annular sealing grooves (5), and the outer end face of the sealing rings (4) protrudes from the end face of the sealing ring seat (3) for tightly fitting with the end of the steel pipe inserted into the docking cavity.

2. The steel pipe docking device with built-in sealing structure according to claim 1, characterized in that: It also includes a locking mechanism, which has two sets. The two sets of locking mechanisms are symmetrically arranged on the outer sides of both ends of the docking body (1). Each set of locking mechanisms includes an arc-shaped clamping block (6), an adjusting screw (7), and a fixed seat (8). The fixed seat (8) is fixedly connected to the outer circumferential surface of the docking body (1). The adjusting screw (7) passes through the fixed seat (8) and is threadedly connected to the fixed seat (8). The inner end of the adjusting screw (7) is rotatably connected to the arc-shaped clamping block (6). The inner arc surface of the arc-shaped clamping block (6) is adapted to the outer circumferential surface of the steel pipe (2).

3. The steel pipe docking device with built-in sealing structure according to claim 1, characterized in that: It also includes a positioning component, which includes a positioning protrusion (9) and a positioning groove (10). The positioning protrusion (9) is disposed on the inner wall of the docking cavity, and the positioning groove (10) is opened on the outer circumferential surface of the steel pipe. The positioning protrusion (9) and the positioning groove (10) are adapted to each other.

4. The steel pipe docking device with built-in sealing structure according to claim 1, characterized in that: The inner wall of the docking cavity is provided with an annular step, and the outer circumferential surface of the sealing ring seat is provided with an annular protrusion, which engages with the annular step.

5. A steel pipe docking device with a built-in sealing structure according to claim 1, characterized in that: The outer circumferential surface of the docking body (1) is provided with reinforcing ribs (11), which are arranged along the axial direction of the docking body (1), and there are at least three reinforcing ribs (11) evenly distributed on the outer circumferential surface of the docking body.

6. A steel pipe docking device with a built-in sealing structure according to claim 2, characterized in that: The outer end of the adjusting screw (7) is provided with a knob (12), and the outer circumferential surface of the knob is provided with anti-slip protrusions.

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