Corrosion resistant pipe

Abstract

The utility model belongs to the corrosion -resistant pipeline field, concretely is a kind of corrosion -resistant pipeline, the adjacent port of first pipeline and second pipeline is evenly provided with second limit ring, the inside of first pipeline and second pipeline is slidably provided with corrosion -resistant inner tube, the one end of each corrosion -resistant inner tube is mutually abutted with the side wall of one side of second limit ring, the inside of each second limit ring is slidably provided with connecting ring, the side wall on the one side of each connecting ring is evenly provided with multiple elastic clamping piece, the elastic clamping piece is evenly matched with the annular clamping groove of one side to form the clamping fixation of the one end of corrosion -resistant inner tube.The utility model is provided with corrosion -resistant inner tube component, can carry out quick replacement to corrosion -resistant inner tube, also can form the clamping fixation of the one end of corrosion -resistant inner tube, effectively improve the stability of corrosion -resistant inner tube in the inside of first pipeline.

Description

Technical Field

[0001] This utility model belongs to the field of corrosion-resistant pipe technology, and in particular relates to a corrosion-resistant pipe. Background Technology

[0002] Corrosion-resistant pipelines typically refer to pipeline materials or surface treatment technologies with strong corrosion resistance. These pipelines are commonly used in industrial fields with corrosive environments, such as the chemical, oil, and natural gas industries, to ensure the long-term stable operation of the pipeline system.

[0003] Patent application CN202421666851.5 discloses a novel corrosion-resistant pipe, comprising a water pipe with a reinforcing component fixedly connected internally. A spring is disposed outside a limiting ring, and a sphere is fixedly connected to the outside of the spring. A connecting pipe is slidably connected internally to a sleeve, and the connecting pipe has a through hole. Two limiting blocks are fixedly connected to the upper and lower sides of the connecting pipe. A threaded ring is threadedly connected to the outside of the sleeve. An anti-corrosion component is fixedly connected internally to the water pipe. In this invention, the pipe has a reinforcing coating and an anti-corrosion coating, achieving both pipe connection and internal corrosion protection. Simultaneously, it blocks water flow during disassembly, reducing the risk of injury to workers. The spherical sleeve and the fixing ring on the hemispherical sleeve are fixed with sealing magnetic strips and bolts. The pipe at bends can be repaired, extending its service life.

[0004] Existing technologies use spherical sleeves and hemispherical structures to allow for repairs at pipe bends, but these methods still have shortcomings:

[0005] First, when the anti-corrosion layer inside the existing corrosion-resistant pipeline wears down and fails during long-term use, it is often necessary to replace the entire pipeline directly, rather than directly replacing the anti-corrosion layer inside the pipeline. This increases the cost of pipeline use, and replacing the anti-corrosion layer inside the pipeline is also difficult, affecting the overall replacement efficiency.

[0006] Secondly, existing anti-corrosion pipe flanges are directly sealed with gaskets, resulting in poor sealing performance between pipes. Over long-term use, this can lead to leakage of corrosive substances transported inside the pipes, affecting the safe transport of corrosive substances. Summary of the Invention

[0007] To overcome the shortcomings of existing technologies, this invention provides a corrosion-resistant pipe. Through the inclusion of components such as a corrosion-resistant inner tube, this invention enables rapid replacement of the inner tube while simultaneously providing a snap-fit ​​fixation at one end, effectively improving the stability of the inner tube within the first pipe. Furthermore, the inclusion of components such as a connecting ring ensures a tighter seal between the first and second pipes.

[0008] To achieve the above objectives, this utility model provides the following technical solution: a corrosion-resistant pipe, comprising a first pipe and a second pipe, wherein a first flange is provided at one end of the first pipe, a second flange is provided at one end of the first flange, and a second limiting ring is provided at adjacent ports of the first and second pipes; a corrosion-resistant inner tube is slidably disposed inside both the first and second pipes, and one end of each corrosion-resistant inner tube abuts against one side wall of the second limiting ring; an annular groove is provided on one side of the inner circular surface of each second limiting ring on both the first and second pipes; a connecting ring is slidably disposed inside each second limiting ring; a plurality of elastic snap-fit ​​pieces are provided on one side wall of each connecting ring, and each elastic snap-fit ​​piece cooperates with the annular groove on one side to clamp and fix one end of the corrosion-resistant inner tube; and a flexible sealing ring is provided between two connecting rings.

[0009] Optionally, the outer wall of the flexible sealing ring is provided with multiple protruding rings.

[0010] Optionally, a first limiting ring is slidably provided on one side of the second flange outside the second pipe. A plurality of second protrusions are provided on the outer circular surface of the first limiting ring. A first protrusion is provided on one side of the outer circular surface of the first flange. A bolt is rotatably provided inside each first protrusion. One end of each bolt is threadedly connected to its adjacent second protrusion.

[0011] Optionally, each of the first protrusions has a clamping folding plate on one side wall, and a gear is rotatably arranged between every two adjacent clamping folding plates and the first protrusion. Each gear is fixedly connected to one end of its adjacent bolt, and a toothed ring is rotatably arranged on the outside of the first pipe, which meshes with multiple gears.

[0012] Optionally, each of the clamping plates has a slidable limit rod inside, and each limit rod forms a limiting engagement with the gear on its side.

[0013] Optionally, the inner circular surface of the toothed ring is provided with an annular groove, and a rotating retaining ring is rotatably disposed inside the annular groove, the rotating retaining ring being fixedly connected to the outer circular surface of the first pipe.

[0014] Optionally, a rotating ring is rotatably provided on the outer circular surface of the first pipe. The rotating ring is fixedly connected to one side wall of the toothed ring, and multiple anti-slip grooves are provided on the outer circular surface of the rotating ring.

[0015] Optionally, a groove is provided on one side of the first protrusion on the inner circular surface of the first limiting ring, and a snap-fit ​​strip is slidably disposed inside each groove, and each snap-fit ​​strip is fixedly connected to the outer circular surface of the second pipe.

[0016] In summary, compared with existing technologies, the beneficial effects of this solution are as follows:

[0017] This utility model, through the setting of components such as corrosion-resistant inner tube, annular groove and elastic snap-fit ​​piece, can quickly replace the corrosion-resistant inner tube, and at the same time form a snap-fit ​​fixation on one end of the corrosion-resistant inner tube, so that the corrosion-resistant inner tube can be stably fixed inside the first pipe and the second pipe, which facilitates the replacement of the corrosion-resistant inner tube and effectively improves the stability of the corrosion-resistant inner tube inside the first pipe.

[0018] This utility model, through the setting of components such as connecting rings, flexible sealing rings, and convex rings, makes the connection and sealing between the first pipe and the second pipe tighter, and can perform multi-layer sealing at multiple connection points between the first pipe and the second pipe, thereby effectively improving the connection and sealing performance of the first pipe and the second pipe.

[0019] This invention, through the arrangement of the first flange, the second flange, and components such as the toothed ring, allows multiple bolts to be rotated simply by rotating the rotating ring sleeve when the first pipe and the second pipe are to be squeezed and sealed. This effectively pulls the first flange and the second flange closer to each other, thereby forming a squeeze seal on the flexible sealing ring and other components, making the installation between the first pipe and the second pipe faster. Attached Figure Description

[0020] Figure 1 This is a perspective view of the present utility model;

[0021] Figure 2 This is the front view of the present invention;

[0022] Figure 3 for Figure 2 A three-dimensional cross-sectional view at point AA;

[0023] Figure 4 for Figure 3 A magnified view of a section at point B in the middle;

[0024] Figure 5 for Figure 3 A magnified view of a section at point C.

[0025] Figure 6 for Figure 3 Enlarged view of a section at point D;

[0026] Figure 7 for Figure 1 A magnified view of a section at point E in the middle;

[0027] Figure 8 This is a perspective view of the flexible sealing ring part of this utility model.

[0028] In the diagram: First pipe 10, Second pipe 11, First flange 12, Second flange 13, Corrosion-resistant inner pipe 14, Annular groove 15, Connecting ring 16, Elastic snap-fit ​​piece 17, Flexible sealing ring piece 18, Raised ring 19, Sealing gasket 20, First protrusion 21, First limiting ring 22, Second protrusion 23, Bolt 24, Gear 25, Clamping folding plate 26, Toothed ring 27, Rotating snap ring 28, Annular groove 29, Limiting rod 30, Rotating ring sleeve 31, Anti-slip groove 32, Second limiting ring 33, Sliding groove 34, Snap-fit ​​strip 35. Detailed Implementation

[0029] To enable those skilled in the art to better understand the present invention, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Example 1:

[0030] like Figure 1 , Figure 2 , Figure 3 , Figure 4 and Figure 8 As shown, a corrosion-resistant pipe includes a first pipe 10 and a second pipe 11. A first flange 12 is provided at one end of the first pipe 10, and a second flange 13 is provided on one side of the first flange 12 on the end face of the second pipe. A second limiting ring 33 is provided at the adjacent ports of the first pipe 10 and the second pipe 11. The second limiting ring 33 has a certain thickness and controls the distance between the first flange 12 and the second flange 13. A corrosion-resistant inner tube 14 is slidably provided inside the first pipe 10 and the second pipe 11. One end of each corrosion-resistant inner tube 14 abuts against one side wall of the second limiting ring 33. The setting of the second limiting ring 33 can restrict one end of the corrosion-resistant inner tube 14, so that when replacing or installing the corrosion-resistant inner tube 14 inside the first pipe 10 and the second pipe 11, it is only necessary to move one end of the corrosion-resistant inner tube 14 to abut against the second limiting ring 33 to ensure that the installation position of the corrosion-resistant inner tube 14 inside the first pipe 10 and the second pipe 11 is accurate.

[0031] Each second limiting ring 33 has an annular groove 15 on one side of the inner circular surface of the first pipe 10 and the second pipe 11. A connecting ring 16 is slidably disposed inside each second limiting ring 33. The connecting ring 16 is annular in shape. During installation, the outer circular surface of the connecting ring 16 slides against the inner circular surface of the second limiting ring 33 and the inner circular surface of the corrosion-resistant inner tube 14, creating a sealed contact between the connecting ring 16 and the second limiting ring 33 and the corrosion-resistant inner tube 14. The connecting ring 16 forms a seal at the contact point between the second limiting ring 33 and the corrosion-resistant inner tube 14, ensuring that liquid does not seep into the annular groove 15 and the connection point of the second limiting ring 33 when flowing inside the first pipe 10 and the second pipe 11. Multiple elastic snap-fit ​​pieces 17 are provided on one side wall of each connecting ring 16. The elastic snap-fit ​​piece 17 has a V-shaped cross-section and is an integral ring tube, which matches the overall shape of the annular groove 15. It can abut against the inner circular surface of the annular groove 15. When the elastic snap-fit ​​piece 17 abuts against the annular groove 15, it can clamp and fix one end of the corrosion-resistant inner tube 14. The arrangement of multiple elastic snap-fit ​​pieces 17 and annular grooves 15 allows one end of the corrosion-resistant inner tube 14 to be snapped into the inside of the annular groove 15 through the elastic compression of each elastic snap-fit ​​piece 17, thereby forming a snap-fit ​​fixation of the corrosion-resistant inner tube 14 inside the first pipe 10 and the second pipe 11. This facilitates the replacement of the corrosion-resistant inner tube 14 while also fixing it. A flexible sealing ring piece 18 is provided between the two connecting rings 16. The flexible sealing ring piece 18 is made of elastic sealing material, such as... Figure 8 As shown, the overall shape is a sealed folded ring. The flexible sealing ring 18 forms a sealed connection between the two connecting rings 16. After the first pipe 10 and the second pipe 11 are installed and connected, a seal is formed at the connection point of the first pipe 10 and the second pipe 11. Furthermore, the compression of the flexible sealing ring 18 by the first flange 12 and the second flange 13 further improves the connection sealing performance of the first flange 12 and the second flange 13.

[0032] Furthermore, such as Figure 1 and Figure 7 As shown, a first limiting ring 22 is slidably disposed on one side of the second flange 13 outside the second pipe 11. A plurality of second protrusions 23 are disposed on the outer circular surface of the first limiting ring 22. A first protrusion 21 is disposed on one side of the outer circular surface of the first flange 12. A bolt 24 is rotatably disposed inside each first protrusion 21. One end of each bolt 24 is threadedly connected to its adjacent second protrusion 23. By rotating the plurality of bolts 24, the plurality of second protrusions 23 move closer to the plurality of first protrusions 21, thereby reducing the distance between the first limiting ring 22 and the first flange 12, thereby compressing the first flange 12 and the second flange 13, thereby forming a compression seal between the first flange 12 and the second flange 13 on the flexible sealing ring 18.

[0033] Furthermore, such as Figure 1 and Figure 2 As shown, each of the first protrusions 21 has a groove 34 on one side of the inner circular surface of the first limiting ring 22. Each groove 34 has a snap-fit ​​strip 35 slidably disposed inside it. Each snap-fit ​​strip 35 is fixedly connected to the outer circular surface of the second pipe 11. In this scheme, each snap-fit ​​strip 35 and the groove 34 are aligned with the corresponding second protrusion 23 and other structures. Therefore, during installation, the snap-fit ​​strip 35 will slide and engage with the groove 34 first. When the two slide and engage, the first limiting ring 22 and the second pipe 11 cannot rotate circumferentially, thereby limiting the first limiting ring 22. This allows the positions of the second protrusion 23 and the first protrusion 21 to be quickly aligned during installation, thereby improving the efficiency of installation.

[0034] Furthermore, such as Figure 5 and Figure 7 As shown, each first protrusion 21 has a clamping baffle 26 on one side wall. A gear 25 is rotatably mounted between every two adjacent clamping baffles 26 and the first protrusion 21. Each gear 25 is fixedly connected to one end of its adjacent bolt 24. The clamping baffles 26, in conjunction with the first protrusions 21, form a locking and limiting mechanism for the gears 25. A toothed ring 27 is rotatably mounted on the outside of the first pipe 10. The toothed ring 27 meshes with multiple gears 25. During installation, the toothed ring 27 allows one end of each bolt 24 to be inserted into multiple... Inside the second protrusion 23, the gear ring 27 is rotated. The gear ring 27 is connected to multiple gears 25 through meshing, which drives the rotation of multiple gears 25, thereby driving the rotation of multiple bolts 24. Through the threaded connection between multiple bolts 24 and multiple second protrusions 23, the distance between the first flange 12 and the first limiting ring 22 is reduced, thereby forming a compression seal between the first flange 12 and the second flange 13, thus completing the rapid installation between the first pipe 10 and the second pipe 12 and improving the speed of pipe installation.

[0035] Furthermore, such as Figure 6 As shown, the inner circular surface of the toothed ring 27 is provided with an annular groove 29, and a rotating retaining ring 28 is rotatably disposed inside the annular groove 29. The rotating retaining ring 28 is fixedly connected to the outer circular surface of the first pipe 10. When the toothed ring 27 is rotated, the rotating retaining ring 28 forms a fixed rotational position of the toothed ring 27 by rotating and engaging with the annular groove 29. This effectively prevents the toothed ring 27 from sliding horizontally on the outer circular surface of the first pipe 10, thus preventing the toothed ring 27 from failing to mesh with the multiple gears 25 and improving the convenience of pipe installation and disassembly.

[0036] Furthermore, such as Figure 5As shown, each clamping baffle 26 has a sliding limit rod 30 inside. Each limit rod 30 forms a limiting engagement with the gear 25 on its side. After the pipeline is installed, by sliding the limit rod 30, the limit rod 30 can be engaged between the teeth of the gear 25, thereby restricting the rotation of the gear 25. This effectively prevents the gear 25 from loosening after long-term use after the pipeline is installed, thus ensuring the stability of the gear 25. This also prevents the loosening between the first flange 12 and the first limit ring 22, effectively ensuring the sealing of the connection between the pipelines.

[0037] Furthermore, such as Figure 2 As shown, a rotating ring 31 is rotatably provided on the outer circular surface of the first pipe 10. The rotating ring 31 is fixedly connected to one side wall of the toothed ring 27. The rotating ring 31 increases the rotational contact area of ​​the toothed ring 27, so that the toothed ring 27 can be rotated by rotating the rotating ring 31. This facilitates the rotation of the toothed ring 27 and improves the convenience of pipe installation. Multiple anti-slip grooves 32 are provided on the outer circular surface of the rotating ring 31. The multiple anti-slip grooves 32 effectively improve the anti-slip properties of the outer circular surface of the rotating ring 31. Example 2:

[0038] Based on Example 1, further examples are made, such as... Figure 8 As shown, multiple raised rings 19 are provided on the outer wall of the flexible sealing ring 18. The arrangement of multiple raised rings 19 allows the flexible sealing ring 18 to be squeezed and sealed between the first flange 12 and the first flange 13, so that the multiple annular 19 can generate a multi-layer annular seal under the compression of the first flange 12 and the first flange 13, thereby improving the sealing performance between the first flange 12 and the flexible sealing ring 18 and between the second flange 13 and the raised rings 19, and further improving the connection sealing performance between the first pipe 10 and the second pipe 11. Sealing gaskets 20 are provided on both sides of the flexible sealing ring 18, and the arrangement of sealing gaskets 20 further improves the sealing performance between the flexible sealing ring 18 and the first flange 12 and between the flexible sealing ring 18 and the second flange 13.

[0039] The specification and claims use certain terms to refer to specific components. Those skilled in the art will understand that hardware manufacturers may use different names to refer to the same component. This specification and claims do not distinguish components based on differences in name, but rather on differences in function. The term "comprising" throughout the specification and claims is an open-ended term and should be interpreted as "comprising but not limited to." "Approximately" means that within an acceptable margin of error, those skilled in the art can solve the technical problem and substantially achieve the technical effect within a certain margin of error.

[0040] It should be noted that the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a product or system comprising a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a product or system. Without further limitation, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the product or system that includes said element.

[0041] The foregoing description illustrates and describes several preferred embodiments of this application. However, as previously stated, it should be understood that this application is not limited to the forms disclosed herein and should not be construed as excluding other embodiments. It can be used in various other combinations, modifications, and environments, and can be altered within the scope of the application concept described herein through the foregoing teachings or techniques or knowledge in related fields. Any modifications and variations made by those skilled in the art that do not depart from the spirit and scope of this application should be within the protection scope of the appended claims.

Claims

1. A corrosion-resistant pipe, comprising a first pipe (10) and a second pipe (11), wherein a first flange (12) is provided at one end of the first pipe (10), and a second flange (13) is provided at one end of the first flange (12), characterized in that, A second limiting ring (33) is provided at the adjacent ports of the first pipe (10) and the second pipe (11). A corrosion-resistant inner tube (14) is slidably provided inside the first pipe (10) and the second pipe (11). One end of each corrosion-resistant inner tube (14) abuts against one side wall of the second limiting ring (33). An annular groove (15) is provided on one side of the second limiting ring (33) on the inner circular surface of the first pipe (10) and the second pipe (11). A connecting ring (16) is slidably provided inside each second limiting ring (33). A plurality of elastic snap-fit ​​pieces (17) are provided on one side wall of each connecting ring (16). Each elastic snap-fit ​​piece (17) cooperates with the annular groove (15) on one side to clamp and fix one end of the corrosion-resistant inner tube (14). A flexible sealing ring piece (18) is connected between two connecting rings (16).

2. The corrosion-resistant pipe according to claim 1, characterized in that, The flexible sealing ring (18) has multiple protruding rings (19) on its outer side wall.

3. The corrosion-resistant pipe according to claim 1, characterized in that, A first limiting ring (22) is slidably provided on one side of the second flange (13) outside the second pipe (11). A plurality of second protrusions (23) are provided on the outer circular surface of the first limiting ring (22). A first protrusion (21) is provided on one side of the first flange (12). A bolt (24) is rotatably provided inside each first protrusion (21). One end of each bolt (24) is threadedly connected to its adjacent second protrusion (23).

4. A corrosion-resistant pipe according to claim 3, characterized in that, Each of the first protrusions (21) has a clamping folding plate (26) on one side wall. A gear (25) is rotatably arranged between each two adjacent clamping folding plates (26) and the first protrusion (21). Each gear (25) is fixedly connected to one end of its adjacent bolt (24). A toothed ring (27) is rotatably arranged on the outside of the first pipe (10). The toothed ring (27) meshes with multiple gears (25).

5. A corrosion-resistant pipe according to claim 4, characterized in that, Each of the clamping plates (26) has a slidable limit rod (30) inside, and each limit rod (30) forms a limit engagement with the gear (25) on its side.

6. A corrosion-resistant pipe according to claim 4, characterized in that, The inner circular surface of the toothed ring (27) is provided with an annular groove (29), and a rotating retaining ring (28) is rotatably provided inside the annular groove (29). The rotating retaining ring (28) is fixedly connected to the outer circular surface of the first pipe (10).

7. A corrosion-resistant pipe according to claim 6, characterized in that, The outer surface of the first pipe (10) is rotatably provided with a rotating ring (31), which is fixedly connected to one side wall of the toothed ring (27). Multiple anti-slip grooves (32) are provided on the outer surface of the rotating ring (31).

8. A corrosion-resistant pipe according to claim 3, characterized in that, Each of the first protrusions (21) has a groove (34) on one side of the inner circular surface of the first limiting ring (22), and a snap-fit ​​strip (35) is slidably disposed inside each groove (34), and each snap-fit ​​strip (35) is fixedly connected to the outer circular surface of the second pipe (11).

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