Ocean composite lining pipe joint
By designing a combined structure of support joints, limit joints and fixed trays, the problem of easy separation of lined pipe joints in the marine environment is solved, and the stable connection and seal between lined pipes and the original pipes is achieved, which improves the safety and reliability of the pipeline system.
Patent Information
- Application Number
- CN202422260941.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-09-14
- Publication Date
- 2025-07-22
- Estimated Expiration
- 2034-09-14
AI Technical Summary
The existing lined pipe joints are easily separated from the original pipe interface in the marine environment, affecting the stability and sealing of the pipe connection.
A marine composite lined pipe joint was designed. Through a combined structure of support joints, limit joints, fixing plates and threaded sleeves, the secure connection between the lined pipe and the original pipe is ensured, and the sealing effect is achieved through the fixation of bolts and nuts.
It realizes stable connection and sealing between the lined pipe and the original pipe, extends the service life of the pipe, and improves the safety and reliability of the pipe system.
Smart Images
Figure CN223137254U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of inner liner pipe joints, and particularly relates to an offshore composite inner liner pipe joint. Background Art
[0002] Submarine pipelines are vulnerable to factors such as seawater erosion, seabed sediment accumulation, and biological corrosion. Therefore, regular inspections and maintenance are required. After damage, since the submarine pipeline cannot be excavated and opened throughout, inner liner pipe repair can reinforce the interior without completely opening. That is, a new pipe is embedded inside the original pipe and the two are fixed together, which can effectively solve the problems of breakage and severe wear of the original pipe, extend the service life of the pipe, and improve the safety and reliability of the pipeline system.
[0003] After the inner liner pipe is embedded inside the original pipe, affected by the marine environment, only the two inner liner pipe joints can be fixed at the interface of the original pipe. However, since most of the existing inner liner pipe joints are used for connecting and fixing between two inner liner pipes and do not reinforce the inner liner pipe and the original pipe, the inner liner pipe joint is prone to separation from the original pipe interface, affecting the overall connection effect after pipeline modification. In view of the above defects, the present utility model is proposed. Content of the Utility Model
[0004] The purpose of the present utility model is to provide an offshore composite inner liner pipe joint to solve the problems raised.
[0005] To solve the above technical problems, the present utility model provides the following technical solution: An offshore composite inner liner pipe joint, including an original pipe and an inner liner pipe. Two inner liner pipes are fixedly embedded inside the two original pipes. Connecting flanges are fixedly arranged on the outer surfaces of the two original pipes. A support joint is fixed at one end of each inner liner pipe, and a limit joint located outside the original pipe is fixed at the other end. The two connecting flanges are fixed by fixing bolts and nuts.
[0006] One end of the support joint extending outside the original pipe is attached to a fixing card plate, and a number of fixing screws are equidistantly arranged inside the fixing card plate. Fixing holes are inserted into each of the fixing screws, and each fixing hole penetrates to the outside of the fixing card plate and is fixed on the side wall of the inner liner pipe. Nuts for fixing the fixing card plate and the support joint are threadedly sleeved on the fixing holes inside the fixing screws.
[0007] Preferably, each fixing card plate is arranged in an arc shape that fits the outer circle of the original pipe. A number of limit insertion rods are equidistantly fixed on the side of the fixing card plate facing the original pipe. Limit holes for cooperation with the limit insertion rods for limiting are equidistantly arranged on the side of the original pipe facing the fixing card plate.
[0008] Preferably, a support pipe is fixed to one end of the limit joint extending to the outside of the original pipe, and a rotating sleeve is rotatably sleeved on the support pipe. A threaded sleeve threadedly connected to the rotating sleeve is fixed to the outer surface of the support pipe near the opposite end of the support joint, for cooperatively fixing the two inner lining pipes with the rotating sleeve.
[0009] Preferably, a limit plate is fixed to one end of the rotating sleeve away from the threaded sleeve, and the inner diameter of the limit plate is larger than the outer diameter of the support pipe and smaller than the outer diameter of the threaded sleeve. The length of the rotating sleeve is equal to the length of the support pipe.
[0010] Preferably, each fixing hole is set to be "T"-shaped for cooperating with the fixing screw and the nut, and the nut is located inside the fixing hole. The outer diameter of the fixing card plate is equal to the outer diameters of the original pipe and the threaded sleeve. The limit joint is set to be "T"-shaped for cooperating with the inner lining pipe and the original pipe. The outer diameter of the end of the limit joint extending to the outside of the original pipe is equal to the outer diameter of the original pipe.
[0011] Preferably, the sum of the lengths of the threaded sleeve and the fixing card plate is equal to the sum of the lengths inside the rotating sleeve on the side of the limit plate. Threads for cooperating with the inside of the rotating sleeve are provided on the outer surface of the fixing card plate.
[0012] Preferably, threads for cooperating with the outer surface of the threaded sleeve are provided inside the rotating sleeve. The thickness of the rotating sleeve is smaller than the thickness between the side of the fixing bolt and the outer surface of the fixing card plate. A sealing gasket is adhesively fixed to one side of the rotating sleeve close to the threaded sleeve.
[0013] Compared with the prior art, the beneficial effects of the present utility model are as follows:
[0014] 1. The present utility model is provided with a reinforcement assembly. After the inner lining pipe is embedded into the original pipe, one end is limited by the limit joint, and the support joint at the other end is limited by the fixing card plate. Cooperating with the limit insertion rod, the inner lining pipe can be firmly connected to the original pipe. And under the fixation of the external fixing bolts, the two original pipes and the two inner lining pipes are respectively firmly and stably connected, and the normal installation of the inner lining pipe will not be affected.
[0015] 2. In the present utility model, through the cooperation of the threaded sleeve, the rotating sleeve and the support pipe, after aligning the two inner lining pipes, by screwing the rotating pipe onto the fixed threaded sleeve, the two inner lining pipes are pre-fixed in advance, and the sealing effect of the connection between the two inner lining pipes is ensured, further improving the fixing effect of the inner lining pipe joint. BRIEF DESCRIPTION OF THE DRAWINGS
[0016] Figure 1 It is a three-dimensional structural schematic diagram of the present utility model;
[0017] Figure 2 Schematic diagram of the right side of the split structure of the present utility model;.
[0018] Figure 3 Schematic diagram of the left side of the split structure of the present utility model;
[0019] Figure 4 Front view schematic diagram of the layout structure of the present utility model.
[0020] The numbers in the figure represent:
[0021] 1. Original pipeline; 2. Connecting flange; 3. Lined pipeline; 4. Support joint; 5. Limit joint; 6. Fixed clamping plate; 7. Fixed screw; 8. Fixed hole; 9. Limit insertion rod; 10. Limit hole; 11. Fixed bolt; 12. Support pipe; 13. Rotating sleeve; 14. Threaded sleeve; 15. Limit plate; 16. Sealing gasket. Specific implementation mode
[0022] The following further elaborates the present utility model in combination with the accompanying drawings and embodiments for the above and other technical features and advantages of the present utility model. However, the following embodiments are only the preferred embodiments of the present utility model and not all of them. Embodiment
[0023] As Figures 1-4 shown, the present utility model provides an offshore composite lined pipe joint, including an original pipeline 1 and a lined pipeline 3. The lined pipeline 3 is fixedly embedded inside two original pipelines 1. Connecting flanges 2 are fixedly arranged on the outer surfaces of the two original pipelines 1. A support joint 4 is fixed at one end of each lined pipeline 3, and a limit joint 5 located outside the original pipeline 1 is fixed at the other end. The two connecting flanges 2 are fixedly clamped and fixed by fixed bolts 11 and nuts. When installing the lined pipeline 3, the support joint 4 at the support joint 4 end is inserted into the original pipeline 1 for internal embedding, and the limit joint 5 is made to abut against the pipe orifice of the original pipeline 1;
[0024] One end of the support joint 4 extending to the outside of the original pipeline 1 is attached with a fixed clamping plate 6. The outer diameter of the outer circle of the fixed clamping plate 6 is equal to the outer diameters of the original pipeline 1 and the threaded sleeve 14. The outer surface of the fixed clamping plate 6 is provided with threads that cooperate with the inside of the rotating sleeve 13. The limit joint 5 is arranged in a "T" shape that cooperates with the lining pipeline 3 and the original pipeline 1. The outer diameter of the outer end of the limit joint 5 extending to the outside of the original pipeline 1 is equal to the outer diameter of the original pipeline 1. A number of fixed screw rods 7 are equidistantly arranged inside the fixed clamping plate 6. A fixing hole 8 is inserted into each fixed screw rod 7. Each fixing hole 8 is arranged in a "T" shape that cooperates with the fixed screw rod 7 and the nut, and the nut is located inside the fixing hole 8. Each fixing hole 8 penetrates to the outside of the fixed clamping plate 6 and is fixed on the side wall of the lining pipeline 3. Nuts for fixing the fixed clamping plate 6 and the support joint 4 are threadedly sleeved on the fixing holes 8 inside the fixed screw rods 7. Through the cooperation of the fixed screw rods 7, the fixing holes 8 and the nuts, the fixed clamping plate 6 and the support joint 4 are fixed. Then, through the fixing bolts 11 and the nuts, the fixed clamping plate 6 is driven to abut against the support pipe 12 and the threaded sleeve 14 and clamped and fixed, so that the two lining pipelines 3 can be hermetically fixed.
[0025] Each fixed clamping plate 6 is arranged in an arc shape that fits the outer circle of the original pipeline 1. A number of limit insertion rods 9 are equidistantly fixed on the side of the fixed clamping plate 6 facing the original pipeline 1. A number of limit holes 10 that cooperate with the limit insertion rods 9 for limiting are equidistantly arranged on the side of the original pipeline 1 facing the fixed clamping plate 6. When the fixed clamping plate 6 and the support joint 4 are fixed, the limit insertion rods 9 are driven to be aligned and inserted into the limit holes 10, so that the lining pipeline 3 and the original pipeline 1 can be limited, and relative rotation between the original pipeline 1 and the lining pipeline 3 can be avoided.
[0026] One end of the limit joint 5 extending to the outside of the original pipeline 1 is fixed with a support pipe 12. A rotating sleeve 13 is rotatably sleeved on the support pipe 12. A threaded sleeve 14 that is threadedly connected to the rotating sleeve 13 is fixed on the outer surface of the support pipe 12 near the opposite end of the support joint 4, which is used to fix the two lining pipelines 3 in cooperation with the rotating sleeve 13. After the two connecting flanges 2 are fixed by the fixing bolts 11, the rotating sleeve 13 is rotated, and the rotating sleeve 13 is screwed to be fixed with the threads on the outside of the fixed clamping plate 6, so that the fixation between the fixed clamping plate 6 and the threaded sleeve 14 can be strengthened, and the connection can be hermetically protected:
[0027] A limiting plate 15 is fixed to one end of the rotating sleeve 13 away from the threaded sleeve 14. The inner diameter of the limiting plate 15 is larger than the outer diameter of the support pipe 12 and smaller than the outer diameter of the threaded sleeve 14. The length of the rotating sleeve 13 is equal to the length of the support pipe 12. The sum of the lengths of the fixed clamping plate 6 and the threaded sleeve 14 is equal to the sum of the lengths inside the rotating sleeve 13 on the side of the limiting plate 15. When the rotating sleeve 13 is screwed to be fixed on the fixed clamping plate 6, it drives the limiting plate 15 to abut against the side of the threaded sleeve 14, which can ensure the sealing effect inside the rotating sleeve 13 on the side of the threaded sleeve 14. And through the limitation of the limiting plate 15, it can prevent the rotating sleeve 13 from separating from the support pipe 12;
[0028] Threads matching the outer surface of the threaded sleeve 14 are provided inside the rotating sleeve 13. The thickness of the rotating sleeve 13 is smaller than the thickness between the side of the fixing bolt 11 and the outer surface of the fixed clamping plate 6. A sealing gasket 16 is adhesively fixed to the side of the rotating sleeve 13 close to the threaded sleeve 14, which ensures that the rotating sleeve 13 can be screwed to abut against the original pipe 1 and the connecting flange 2, and will not affect the normal fixing of the fixing bolt 11. At the same time, when the rotating sleeve 13 is tightened, it drives the sealing gasket 16 to abut against the original pipe 1 and the connecting flange 2, further ensuring the sealing performance at the joints of the two original pipes 1 and the two lining pipes 3.
[0029] The above are only the preferred embodiments of the present invention, which are illustrative rather than restrictive to the present invention. Those skilled in the art understand that many changes, modifications, and even equivalents can be made within the spirit and scope defined by the claims of the present invention, but all will fall within the protection scope of the present invention.
Claims
1. A marine composite inner lining pipe joint, characterized in that, It includes the original pipeline (1) and the lined pipeline (3). The lined pipeline (3) is fixedly embedded inside the two original pipelines (1). Connecting flanges (2) are fixedly arranged on the outer surfaces of the two original pipelines (1). A support joint (4) is fixedly arranged at one end of each lined pipeline (3), and a limit joint (5) located outside the original pipeline (1) is fixedly arranged at the other end. The two connecting flanges (2) are fixed by fixing bolts (11) and nuts; One end of the support joint (4) extending outside the original pipeline (1) is attached to a fixing clamping plate (6). A number of fixing screws (7) are equidistantly arranged inside the fixing clamping plate (6). Fixing holes (8) are inserted into each of the fixing screws (7). Each of the fixing holes (8) penetrates to the outside of the fixing clamping plate (6) and is fixed on the side wall of the lined pipeline (3). Nuts for fixing the fixing clamping plate (6) and the support joint (4) are threadedly sleeved on the fixing holes (8) inside the fixing screws (7).
2. The marine composite inner lining pipe joint according to claim 1, wherein, Each of the fixing clamping plates (6) is arranged in an arc shape that fits the outer circle of the original pipeline (1). A number of limit insertion rods (9) are equidistantly fixed on the side of the fixing clamping plate (6) facing the original pipeline (1). Limit holes (10) for limiting and matching with the limit insertion rods (9) are equidistantly arranged on the side of the original pipeline (1) facing the fixing clamping plate (6).
3. The marine composite inner lining pipe joint according to claim 1, characterized in that, One end of the limit joint (5) extending outside the original pipeline (1) is fixedly provided with a support pipe (12). A rotating sleeve (13) is rotatably sleeved on the support pipe (12). A threaded sleeve (14) threadedly connected to the rotating sleeve (13) is fixedly arranged on the outer surface of the support pipe (12) near the opposite end of the support joint (4) for fixing the two lined pipelines (3) in cooperation with the rotating sleeve (13).
4. The marine composite inner liner pipe joint according to claim 3, characterized in that, A limit plate (15) is fixedly arranged at one end of the rotating sleeve (13) away from the threaded sleeve (14). The inner diameter of the limit plate (15) is larger than the outer diameter of the support pipe (12) and smaller than the outer diameter of the threaded sleeve (14). The length of the rotating sleeve (13) is equal to the length of the support pipe (12).
5. The marine composite inner lining pipe joint according to claim 1, characterized in that, Each of the fixing holes (8) is arranged in a "T" shape that matches the fixing screw (7) and the nut, and the nut is located inside the fixing hole (8). The outer diameter of the fixing clamping plate (6) is equal to the outer diameters of the original pipeline (1) and the threaded sleeve (14). The limit joint (5) is arranged in a "T" shape that matches the lined pipeline (3) and the original pipeline (1). The outer diameter of the end of the limit joint (5) extending outside the original pipeline (1) is equal to the outer diameter of the original pipeline (1).
6. The marine composite inner lining pipe joint according to claim 4, characterized in that, The sum of the lengths of the threaded sleeve (14) and the fixing clamping plate (6) is equal to the sum of the lengths inside the rotating sleeve (13) on the side of the limit plate (15). Threads for cooperating with the inside of the rotating sleeve (13) are arranged on the outer surface of the fixing clamping plate (6).
7. The marine composite inner lining pipe joint according to claim 3, characterized in that, The inside of the rotating sleeve (13) is provided with threads that match the outer surface of the threaded sleeve (14). The thickness of the rotating sleeve (13) is less than the thickness between the side of the fixing bolt (11) and the outer surface of the fixing card plate (6). A sealing gasket (16) is adhesively fixed to one side of the rotating sleeve (13) close to the threaded sleeve (14).