Pipe connecting structure
By designing the pipe connection structure, using limit rings, threaded joints and sealing gaskets, the problem of composite steel pipe welding affecting the anti-corrosion layer and equipment dependence is solved, and simple and safe pipe connection is achieved, reducing operational difficulty and equipment needs.
Patent Information
- Application Number
- CN202421254818.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-06-04
- Publication Date
- 2025-01-07
- Estimated Expiration
- 2034-06-04
AI Technical Summary
The high-temperature molten pool affects the corrosion resistance of the stainless steel anti-corrosion layer during welding connection, and both common connection methods require large equipment and power supply, which improves the operator's technical requirements.
Design a pipe connection structure, including two pipe sections, limit rings, threaded male joints and threaded female joints. By manually processing blind holes and installing top wires at the end of the pipe section, the threaded connection and sealing gaskets are used to achieve the fixing and sealing of the pipe section. , avoid welding and the use of large-scale equipment.
The anti-corrosion effect protection of stainless steel anti-corrosion layer is achieved, which reduces the operator's technical requirements, and simplifies the on-site connection process, avoiding dependence on large equipment and power supplies.
Smart Images
Figure CN222316213U_ABST
Abstract
Description
Technical Field
[0001] The utility model belongs to the technical field of pipe connection structures, in particular to a pipe connection structure. Background Art
[0002] Steel pipe is a commonly used pipe. In on-site construction, there are usually two ways to connect steel pipes. One is welding, and the other is to cut a certain length of pipe as needed, use special equipment on site to process threads on the end of the steel pipe, and then connect the pipes through threaded joints.
[0003] At present, a composite steel pipe is widely used in production practice. The outer layer of this steel pipe is a carbon steel layer, and a stainless steel anti-corrosion layer is arranged on the inner wall of the carbon steel layer, which can effectively improve the corrosion resistance of the steel pipe.
[0004] If the above-mentioned composite pipes are connected by welding, the high-temperature molten pool generated during welding will cause the components of the carbon steel layer and the stainless steel anti-corrosion layer to penetrate each other, seriously affecting the anti-corrosion effect of the stainless steel anti-corrosion layer. At the same time, welding requires the use of a welding machine and a power supply, which also requires a high level of technical skills from the operator. If the connection is made by on-site thread processing, there are also problems such as the need to use large equipment, power supply, and high requirements on the technical level of the operator.
[0005] Therefore, it is necessary to design a new pipe connection structure for the above-mentioned composite pipe to solve the above-mentioned problems. Utility Model Content
[0006] The utility model aims to provide a pipe connection structure, aiming to solve the problems existing in the above-mentioned background technology that welding affects the anti-corrosion effect, and that both welding and on-site thread processing connection methods require the use of large equipment, power supply, and high technical level requirements for operators.
[0007] A pipe connection structure includes two pipe sections, respectively referred to as a first pipe section and a second pipe section, and also includes two limit rings, a threaded male joint and a threaded female joint;
[0008] Two limiting rings are respectively arranged on the outside of the ends of the first pipe section and the second pipe section, and radial threaded holes are processed on the limiting rings, and top screws are installed in the threaded holes;
[0009] The outer surfaces of the first pipe section and the second pipe section are both processed with blind holes matching the top screws, and the top screws are inserted into the blind holes, so that the limit ring is fixedly connected to the first pipe section and the second pipe section;
[0010] The end surface of each of the limiting rings is flush with the end surface of the pipe section where it is located;
[0011] The threaded male joint and the threaded female joint are respectively sleeved on the outside of the first pipe section and the outside of the second pipe section, the threaded male joint and the threaded female joint are connected together by threads, and two limit rings are clamped therebetween, so as to connect the two pipe sections together;
[0012] A sealing gasket is sandwiched between two opposite end surfaces of the first pipe segment and the second pipe segment. After the sealing gasket is clamped by the end surfaces of the two pipe segments, sealing of the connection between the pipe segments can be achieved.
[0013] As a preferred solution, the sealing gasket covers both the end surface of the pipe section and the end surface of the limiting ring.
[0014] As a preferred solution, the two limiting rings are both located on the inner side of the threaded female joint and are slidably matched with the inner wall of the threaded female joint.
[0015] The beneficial effect of the utility model is that the utility model installs a limit ring at each end of the two cut pipe sections, and then clamps the two limit rings through the threaded male joint and the threaded female joint to achieve the connection of the two pipe sections. During on-site construction, it is only necessary to use a hand drill to process the blind hole on the outer side of the pipe section end, and then manually assemble the limit ring, the top screw, the sealing gasket, the threaded male joint and the threaded female joint, without using large equipment or power supply, and the technical level requirements for the operator are also greatly reduced. BRIEF DESCRIPTION OF THE DRAWINGS
[0016] Figure 1 It is a schematic diagram of the overall structure of the utility model.
[0017] Figure 2 It is a schematic diagram of the connection structure between the pipe section and the limiting ring.
[0018] Figure 3 It is a structural schematic diagram of another embodiment of the utility model.
[0019] Figure 1 In the figure: 1. First pipe section; 2. Stainless steel anti-corrosion layer; 3. Female threaded joint; 4. Top screw; 5. Male threaded joint; 6. Limiting ring; 7. Sealing gasket; 8. Second pipe section. DETAILED DESCRIPTION
[0020] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.
[0021] like Figure 1As shown, this embodiment includes two pipe sections, namely the first pipe section 1 and the second pipe section 8, and the inner sides of the two pipe sections are both attached with a stainless steel anti-corrosion layer 2. The above structure is the prior art. On this basis, in order to prevent the welding process from damaging the anti-corrosion performance of the stainless steel anti-corrosion layer 2, the utility model specially designs a pipe fitting to achieve the connection of the two pipe sections.
[0022] like Figure 1 , 2 As shown, the pipe fitting for connecting two pipe sections includes: two limit rings 6, a threaded male joint 5 and a threaded female joint 3.
[0023] like Figure 1 As shown in FIG. 2, a radial threaded hole is machined on the limit ring 6, and a top screw 4 is installed in the threaded hole. The two limit rings 6 are fixedly connected to the outer sides of the ends of the first pipe section 1 and the second pipe section 8 through the top screws 4. In this embodiment, blind holes matching the top screws 4 are machined on the outer surfaces of the two pipe sections, and the top screws 4 are inserted into the blind holes, which is conducive to ensuring the firmness of the limit ring 6 installed on the pipe section.
[0024] like Figure 1 As shown, the end face of each of the limiting rings 6 is flush with the end face of the pipe section where it is located. This design makes the matching surface of the ends of the two pipe sections larger, thereby improving the rigidity of the connection between the two pipe sections.
[0025] like Figure 1 As shown, the threaded male connector 5 and the threaded female connector 3 are respectively sleeved on the outside of the first pipe section 1 and the outside of the second pipe section 8. The threaded male connector 5 and the threaded female connector 3 are connected together by threads, and two limit rings 6 are clamped therebetween, thereby connecting the two pipe sections together.
[0026] like Figure 1 As shown, a sealing gasket 7 is sandwiched between two opposite end faces of the first pipe section 1 and the second pipe section 8. After the sealing gasket 7 is clamped by the end faces of the two pipe sections, the sealing of the pipe section connection can be achieved. The sealing gasket 7 is used to seal the connection between the two pipe sections. The material of the sealing gasket 7 can be selected from rubber, asbestos and copper alloy according to actual working conditions.
[0027] like Figure 1 As shown, the sealing gasket 7 covers the end face of the pipe section and the end face of the limiting ring 6 at the same time. Such a design is not only conducive to increasing the sealing area and improving the sealing effect, but also can prevent the sealing gasket 7 from being out of place during assembly, thereby facilitating assembly.
[0028] like Figure 3As shown, the two stop rings 6 are both located on the inner side of the threaded female joint 3 and are slidably matched with the inner wall of the threaded female joint 3. During assembly, after the threaded female joint 3 is slid to the inner side of the sealing gasket 7 and the two stop rings 6, the axes of the two pipe sections naturally coincide, and the internal threads on the threaded female joint 3 and the external threads on the threaded male joint 5 are also naturally aligned, thereby facilitating quick assembly, preventing "cross threading", and avoiding damage to the threads due to "cross threading".
[0029] Working principle: During on-site construction, first use a hand drill to machine the blind hole on the outside of the end of the pipe segment, then use a screwdriver to connect the limit ring 6 and the top screw 4 to the ends of the two pipe segments, and then align the end faces of the two pipe segments. After alignment, clamp the sealing gasket 7 between the threaded male connector 5 and the threaded female connector 3, and then assemble the threaded male connector 5 and the threaded female connector 3 to connect the two pipe segments together. In the above construction process, there is no need to use large equipment or power supply, and the technical level requirements for the operator are also greatly reduced.
Claims
1. A pipe connection structure, comprising two pipe sections, respectively referred to as a first pipe section (1) and a second pipe section (8), characterized in that: It also includes two limiting rings (6), a threaded male connector (5) and a threaded female connector (3); Two limiting rings (6) are respectively arranged on the outside of the ends of the first pipe section (1) and the second pipe section (8); radial threaded holes are processed on the limiting rings (6), and top screws (4) are installed in the threaded holes; The outer surfaces of the first pipe section (1) and the second pipe section (8) are both processed with blind holes matching the top screw (4), and the top screw (4) is inserted into the blind holes, thereby fixing the limit ring (6) on the first pipe section (1) and the second pipe section (8); The end surface of each of the limiting rings (6) is flush with the end surface of the pipe section where it is located; The threaded male connector (5) and the threaded female connector (3) are respectively sleeved on the outside of the first pipe section (1) and the outside of the second pipe section (8); the threaded male connector (5) and the threaded female connector (3) are connected together by threads, and two limit rings (6) are clamped therebetween, thereby connecting the two pipe sections together; A sealing gasket (7) is clamped between two opposite end surfaces of the first pipe section (1) and the second pipe section (8); after the sealing gasket (7) is clamped by the end surfaces of the two pipe sections, sealing of the pipe section connection can be achieved.
2. A pipe connection structure according to claim 1, characterized in that: The sealing gasket (7) covers both the end surface of the pipe section and the end surface of the limiting ring (6).
3. A pipe connection structure according to claim 1, characterized in that: The two limiting rings (6) are both located on the inner side of the threaded female joint (3) and are slidably matched with the inner wall of the threaded female joint (3).