Pipe connection structure

Abstract

This utility model discloses a pipe fitting connection structure, belonging to the field of pipe fitting connection technology. It includes a sleeve, a first clamp, and a second clamp. The sleeves are respectively installed inside adjacent pipe fittings, with adjacent sleeves facing each other. The first clamp is fitted onto the outside of the connection between adjacent sleeves, and the second clamp is respectively fitted onto the outside of adjacent pipe fittings, with the second clamps positioned opposite each other on both sides of the first clamp. The connection between the second clamp and the sleeve is interlocked. This utility model, through the interlocking of the sleeve and the second clamp, and the coordinated use of the first clamp and the first sealing ring, provides a double guarantee of rapid mechanical tightening and leak-proof sealing, ensuring the connection reliability and structural integrity between adjacent pipe fittings. Furthermore, the inner wall of the second clamp has a groove that forms a mechanical locking groove with the surface of the pipe fitting, suitable for working conditions with large temperature differences and dynamic conditions, improving installation reliability.

Description

Technical Field

[0001] This utility model relates to the field of pipe fitting connection technology, and in particular to a pipe fitting connection structure. Background Technology

[0002] Spiral suction pipes are widely used in water conservancy projects and industrial water supply. Their ease of connection and reliability are crucial for system efficiency, product practicality, and adaptability to various scenarios. Currently, spiral suction pipes are mainly connected using a crimping process at one end of the pipe body, with the fitting crimping element connected via clips or threads. This crimping process relies on hydraulic tools and is often pre-assembled at the factory. If on-site connection is required, it cannot meet the needs for convenient and rapid installation. Furthermore, due to the difference in thermal expansion coefficients between plastic pipes and metal fittings, gaps can easily form at the connection point when there are significant temperature differences, thus affecting sealing and service life. Utility Model Content

[0003] This utility model aims to overcome the problems of high tool requirements and poor adaptability of pipe fitting installation in the prior art, and provides a pipe fitting connection structure.

[0004] To achieve the above objectives, the present invention provides a pipe fitting connection structure, including a sleeve, a first clamp, and a second clamp. The sleeves are respectively installed inside adjacent pipe fittings and are arranged opposite to each other. The first clamp is fitted outside the connection between adjacent sleeves, and the second clamp is respectively fitted outside adjacent pipe fittings. The second clamps are arranged opposite to each other on both sides of the first clamp, and the connection between the second clamp and the sleeve is fitted together.

[0005] In one embodiment, the sleeve includes a first end, a second end, and a first slot. The first end is disposed inside the pipe fitting, the second end is disposed outside the pipe fitting, and the first slot is formed on the outer wall of the second end. The second clamp is provided with a second slot, which is disposed on the inner wall of the second clamp, and the first slot and the second slot are engaged.

[0006] In one embodiment, the inner wall of the second clamp is provided with a groove.

[0007] In one embodiment, the groove matches the texture of the pipe surface, and the two fit together.

[0008] In one embodiment, the pipe fitting connection structure further includes a first sealing ring, which is disposed between adjacent sleeves and at the connection between the first clamp and the adjacent sleeve.

[0009] In one embodiment, the sleeve further includes a first mounting groove, which is formed on the outer wall of the second end of the sleeve, and the two ends of the first sealing ring are respectively embedded in the first mounting groove of the adjacent sleeve.

[0010] In one embodiment, the first sealing ring extends outward from the middle to form a protrusion, and the two sides of the protrusion abut against the second end face of the adjacent sleeve.

[0011] In one embodiment, the sleeve further includes a second mounting groove, which is formed on the contact surface between the first end of the sleeve and the inner wall of the pipe fitting, and a second sealing ring is installed in the second mounting groove.

[0012] In one embodiment, the outer walls of the first clamp and the second clamp are respectively provided with a first fastening part and a second fastening part, and fasteners are installed in the first fastening part and the second fastening part.

[0013] In one embodiment, the inner walls at both ends of the sleeve are provided with bevels.

[0014] In summary, this utility model provides a pipe fitting connection structure. Through the interlocking of the sleeve and the second clamp, rapid clamping of the pipe fitting end is achieved. The first clamp and the first sealing ring work together to create a double guarantee of mechanical clamping and leak-proof sealing, ensuring the connection reliability and structural integrity between adjacent pipe fittings. Simultaneously, the first and second clamps are designed for opening and closing, allowing operation without the need for hydraulic or other specialized tools, facilitating quick installation and removal and improving construction efficiency. Furthermore, the inner wall of the second clamp has a spiral groove that engages with the surface of the pipe fitting to form a mechanical lock, preventing breakage under conditions of large temperature differences and detachment under dynamic conditions, thus improving installation reliability.

[0015] To make the above-mentioned features and advantages of the utility model more apparent and understandable, specific embodiments are described below, and detailed descriptions are provided in conjunction with the accompanying drawings. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the pipe fitting connection structure in this utility model.

[0017] Figure 2 for Figure 1 A magnified view of a portion of the image.

[0018] Figure label:

[0019] Pipe connection structure - 1;

[0020] Sleeve-11;

[0021] First end - 111; Second end - 112; Step structure - 113; First slot - 114; First mounting groove - 115; Second mounting groove - 116;

[0022] First sealing ring -12;

[0023] bulge-121;

[0024] First clamp-13;

[0025] First fastener - 131;

[0026] Second clamp-14;

[0027] Second fastener-141; Second slot-142; Groove-143;

[0028] Second sealing ring -15;

[0029] Pipe fittings-2;

[0030] First fitting - 21; Second fitting - 22; Thread - 23. Detailed Implementation

[0031] To make the objectives and technical solutions of the present utility model clearer, the technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of the present utility model. All other embodiments obtained by those skilled in the art based on the described embodiments of the present utility model without creative effort are within the scope of protection of the present utility model.

[0032] It should be noted that the illustrations provided in this embodiment are only schematic representations of the basic concept of this utility model. Although the illustrations only show the components related to this utility model and are not drawn according to the actual number, shape and size of the components, the form, quantity and proportion of each component can be arbitrarily changed in actual implementation, and the layout of the components may also be more complex.

[0033] 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 invention pertains. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention.

[0034] It should be understood that although the terms "first," "second," etc., may be used herein to describe various elements, these elements should not be limited by these terms. These terms are used only to distinguish one element from another. For example, without departing from the scope of this invention, a first element may be referred to as a second element, and similarly, a second element may be referred to as a first element.

[0035] In order to overcome the obvious shortcomings of existing connectors in terms of connection convenience and environmental adaptability, this utility model provides a pipe connection structure. Figure 1 This is a schematic diagram of the pipe fitting connection structure 1 in this utility model, as shown below. Figure 1 As shown, the pipe fitting connection structure 1 connects the ends of adjacent pipe fittings 2. For ease of description, the pipe fitting 2 on the left is referred to as the first pipe fitting 21, and the pipe fitting 2 on the right is referred to as the second pipe fitting 22.

[0036] Combination Figure 1 and Figure 2 It is known that the pipe fitting connection structure 1 includes a sleeve 11, a first sealing ring 12, a first clamp 13, and a second clamp 14. The sleeves 11 are respectively installed on the inner walls of the first pipe fitting 21 and the second pipe fitting 22, and adjacent sleeves 11 are arranged opposite to each other. The first sealing ring 12 is arranged between adjacent sleeves 11. The first clamp 13 is sleeved on the outside of the connection between the first sealing ring 12 and the adjacent sleeve 11. The second clamp 14 is sleeved on the outside of the first pipe fitting 21 and the second pipe fitting 22, and the second clamp 14 is arranged opposite to each other on both sides of the first clamp 13.

[0037] The sleeve 11 is annular and abuts against the inner wall and end face of the pipe fitting 2. The sleeve 11 is provided with a first end 111, a second end 112, a stepped structure 113, a first slot 114, a first mounting groove 115, and at least one second mounting groove 116. The first end 111 of the sleeve 11 is located inside the pipe fitting 2, and the second end 112 is located outside the pipe fitting 2. A stepped structure 113 is provided at the connection between the first end 111 and the end face of the pipe fitting 2. A second mounting groove 116 is formed on the contact surface between the first end 111 and the inner wall of the pipe fitting 2. The first mounting groove 115 is formed on the outer wall of the second end 112, and the first slot 114 is formed on the outer wall of the second end 112, located between the stepped structure 113 and the first mounting groove 115. The first mounting groove 115 is used to install the first sealing ring 12 to ensure the sealing of the connection between adjacent sleeves 11; the second mounting groove 116 is used to install the second sealing ring 15 to further prevent leakage. The stepped structure 113 causes the pipe fitting 2 and the sleeve 11 to be relatively limited in the radial and axial directions. The first slot 114 is used to connect the second clamp 14 to lock the sleeve 11 and the second clamp 14 to prevent them from falling off. In addition, the inner walls of the first end 111 and the second end 112 are both provided with bevels to reduce fluid resistance.

[0038] The first sealing ring 12 is made of flexible material. Both ends of the first sealing ring 12 are respectively embedded in the first mounting groove 115 of the adjacent sleeve 11, and the middle of the first sealing ring 12 extends outward to form a protrusion 121. The two sides of the protrusion 121 abut against the end face of the second end 112 of the adjacent sleeve 11, which can effectively fill the processing error, enhance the sealing redundancy, and also realize pressure self-tightening, thereby improving the sealing performance under high pressure.

[0039] The first clamp 13 is a two-part opening and closing design. The outer wall of the first clamp 13 has at least one first fastening part 131 for installing fasteners such as bolts and spring clips. The two-part opening and closing design features high assembly and disassembly efficiency and versatility, facilitating quick assembly and disassembly on the construction site. The inner wall of the first clamp 13 abuts against the first sealing ring 12 and the sleeve 11. The first clamp 13 generates a continuous circumferential force, ensuring no relative sliding between adjacent pipe fittings 2. Furthermore, the first sealing ring 12 is provided between the first clamp 13 and the sleeve 11. The combined mechanical clamping of the two ensures the structural integrity of the sleeve 11, preventing deformation of the sleeve 11 due to prolonged pre-tightening force. It also provides radial flexibility, effectively offsetting loosening caused by temperature differences.

[0040] Similarly, the second clamp 14 is also a two-part opening and closing design. The second clamp 14 is also provided with at least one second fastening part 141 for installing fasteners including but not limited to bolts. The second clamp 14 also has a second slot 142, which is located at one end of the second clamp 14 near the first clamp 13 and is located on the inner wall of the second clamp 14. The shape of the second slot 142 matches that of the first slot 114, and the two fit together to limit the sleeve 11. A groove 143 is formed on the inner wall of the second clamp 14. Preferably, the groove 143 is a spiral groove, which is consistent with the thread 23 on the surface of the pipe fitting 2. The two fit together, which effectively disperses the stress between the second clamp 14 and the surface of the pipe fitting 2, avoiding local thermal fatigue cracking; and the engagement of the thread 23 and the spiral groove forms a mechanical lock, which is self-aligning during installation and convenient for assembly; it also reduces the possibility of slippage under dynamic working conditions.

[0041] In another embodiment, one end of the first clamp 13 and the second clamp 14 is provided with a hinge, and the other end is provided with the first fastening part 131 and the second fastening part 141.

[0042] During installation, the sleeve 11 and the second clamp 14 are first clamped tightly to the pipe wall of the pipe fitting 2 from the inside and outside. The second clamp 14 generates a circumferential force inward, causing the outer wall of the pipe fitting 2 to engage with the inner wall of the second clamp 14 and the inner wall of the pipe fitting 2 to engage with the outer wall of the sleeve 11. The sleeve 11 and the pipe fitting 2 are interlocked. Further, after the two sleeves 11 are abutted together and the first sealing ring 12 is embedded, the first clamp 13 is fitted to achieve the connection between the pipe fittings 2.

[0043] In summary, this utility model provides a pipe fitting connection structure 1. Through the interlocking of the sleeve 11 and the second clamp 14, rapid clamping of the end of the pipe fitting 2 is achieved. The first clamp 13 and the first sealing ring 12 work together to create a double guarantee of mechanical clamping and leak-proof sealing, ensuring the connection reliability and structural integrity between adjacent pipe fittings 2. Simultaneously, the first clamp 13 and the second clamp 14 are designed for opening and closing, allowing operation without the need for hydraulic or other specialized tools, facilitating quick installation and removal and improving construction efficiency. Furthermore, the inner wall of the second clamp 14 has a spiral groove that engages with the surface of the pipe fitting 2 to form a mechanical lock, preventing breakage under conditions of large temperature differences and detachment under dynamic conditions, thus improving installation reliability.

[0044] Although the present invention has been disclosed above by way of embodiments, it is not intended to limit the present invention. Anyone skilled in the art can make some modifications and refinements without departing from the spirit and scope of the present invention. Therefore, the scope of protection of the present invention shall be determined by the appended claims.

Claims

1. A pipe fitting connection structure, characterized in that, It includes a sleeve, a first clamp, and a second clamp. The sleeves are respectively installed inside adjacent pipe fittings and are arranged opposite each other. The first clamp is sleeved on the outside of the connection between adjacent sleeves. The second clamp is sleeved on the outside of adjacent pipe fittings and is arranged opposite each other on both sides of the first clamp. The connection between the second clamp and the sleeve is fitted together.

2. The pipe fitting connection structure as described in claim 1, characterized in that, The sleeve includes a first end, a second end, and a first slot. The first end is disposed inside the pipe fitting, the second end is disposed outside the pipe fitting, and the first slot is formed on the outer wall of the second end. The second clamp is provided with a second slot, which is disposed on the inner wall of the second clamp, and the first slot and the second slot are engaged.

3. The pipe fitting connection structure as described in claim 2, characterized in that, The inner wall of the second clamp has a groove.

4. The pipe fitting connection structure as described in claim 3, characterized in that, The groove matches the texture on the surface of the pipe fitting, and the two fit together.

5. The pipe fitting connection structure as described in claim 1, characterized in that, The pipe fitting connection structure also includes a first sealing ring, which is disposed between adjacent sleeves and at the connection between the first clamp and the adjacent sleeve.

6. The pipe fitting connection structure as described in claim 5, characterized in that, The sleeve also includes a first mounting groove, which is formed on the outer wall of the second end of the sleeve, and the two ends of the first sealing ring are respectively embedded in the first mounting groove of the adjacent sleeve.

7. A pipe fitting connection structure as described in claim 6, characterized in that, The first sealing ring extends outward from the middle to form a protrusion, and the two sides of the protrusion abut against the second end face of the adjacent sleeve.

8. A pipe fitting connection structure as described in claim 1, characterized in that, The sleeve also includes a second mounting groove, which is formed on the contact surface between the first end of the sleeve and the inner wall of the pipe fitting, and a second sealing ring is installed in the second mounting groove.

9. A pipe fitting connection structure as described in claim 1, characterized in that, The outer walls of the first clamp and the second clamp are respectively provided with a first fastening part and a second fastening part, and fasteners are installed inside the first fastening part and the second fastening part.

10. A pipe fitting connection structure as described in claim 1, characterized in that, The inner walls at both ends of the sleeve are provided with bevels.

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