A high-strength duplex stainless steel pipe
By using the sealing connection of the annular groove and the rubber gasket, and the modular locking structure of the insert, rotating plate, and bolts, the problem of the difficulty in disassembling duplex stainless steel pipes after welding is solved, realizing convenient disassembly and stable connection, and improving disassembly efficiency and service life.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- WENLING SHUANGSEN STAINLESS STEEL
- Filing Date
- 2025-07-23
- Publication Date
- 2026-07-17
AI Technical Summary
Existing duplex stainless steel pipes are difficult to dismantle easily after welding, resulting in low dismantling efficiency.
It adopts a sealing connection with annular groove and rubber gasket, combined with a modular locking structure of insert, rotating plate and bolt, to achieve convenient disassembly; the outer side is enhanced with the design of T-shaped plate and arc cover to enhance stability, and is equipped with a buffer structure of rubber strip and support plate.
It achieves a highly sealed connection, improves disassembly and maintenance efficiency, and enhances impact resistance, extending service life.
Smart Images
Figure CN224516190U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of duplex stainless steel pipe technology, specifically a high-strength duplex stainless steel pipe. Background Technology
[0002] Duplex stainless steel contains high levels of elements such as chromium, molybdenum, and nitrogen, which makes it perform well in chloride-containing environments. It is especially suitable for chemical pipelines, marine engineering equipment, and other environments that are susceptible to chloride ion corrosion. Stainless steel has good hygiene and corrosion resistance, which can ensure the quality and safety of food.
[0003] In actual use, duplex stainless steel pipes are usually welded together to fix them in place. Once the duplex stainless steel pipes are welded, they cannot be easily removed and need to be cut, which is time-consuming and laborious, thus affecting the disassembly efficiency of duplex stainless steel pipes. Utility Model Content
[0004] The purpose of this invention is to provide a high-strength duplex stainless steel pipe to solve the problems mentioned in the background art.
[0005] The objective of this utility model can be achieved through the following technical solutions: A high-strength duplex stainless steel pipe includes a stainless steel pipe 1 and a stainless steel pipe 2. A circular groove is formed on one side of the stainless steel pipe 1, and a rubber pad adapted to the groove is fixedly connected inside the groove. A first circular ring is fixedly connected inside the stainless steel pipe 1. U-shaped seats 1 are fixedly connected to both ends of the stainless steel pipe 1, and U-shaped seats 2 are fixedly connected to both ends of the stainless steel pipe 2. A rotating plate is rotatably connected inside each of the two U-shaped seats 1, and a through circular groove is formed on one side of each of the two rotating plates. A first bolt is snapped into one side of each of the two U-shaped seats 2, and a nut is threaded onto the outer surface of each of the two first bolts. Fixing blocks 1 are fixedly connected to the other two ends of the stainless steel pipe 1, and two inserts are fixedly connected to one side of each of the two fixing blocks 1. Fixing blocks 2 are fixedly connected to the other two ends of the stainless steel pipe 2, and a through slot is formed on one side of each of the two fixing blocks 2.
[0006] Preferably, the outer surfaces of stainless steel tube one and stainless steel tube two are connected to an array of mounting blocks, and an L-shaped plate is snapped onto one side of each of the four mounting blocks. One side of the L-shaped plate passes through the mounting block and extends to the other side of the mounting block, and a through internal thread groove is opened on one side of each of the four L-shaped plates.
[0007] Preferably, one end of each of the other two mounting blocks is threaded with a second bolt that is adapted to the internal thread groove. One side of the second bolt passes through the mounting block and extends into the interior of the mounting block, and one side of the L-shaped plate is snapped into the interior of the mounting block.
[0008] Preferably, both ends of stainless steel pipe one and stainless steel pipe two are fixedly connected to fixing plates, and T-slots are opened on one side of each of the four fixing plates. T-plates are snapped into the inside of each of the four T-slots, and arc-shaped covers are fixedly connected to one side of each of the four T-plates.
[0009] Preferably, rubber strips are arrayed and connected to one side of each of the four arc-shaped covers, and two symmetrically arranged support plates are fixedly connected to the inside of each of the four arc-shaped covers. A third bolt is threaded to the lower side of each of the four fixed plates, and one side of the third bolt passes through the fixed plate and extends into the interior of the T-slot.
[0010] Preferably, one side of the first bolt passes through the second U-shaped seat and extends to the lower side of the second U-shaped seat. One side of the first bolt is engaged and placed inside the circular groove, and one side of the insert is engaged and placed inside the groove. A second circular ring that fits inside the stainless steel tube is fixedly connected to one side of the second stainless steel tube.
[0011] The beneficial effects of this utility model are: 1. This utility model can achieve a high-sealing connection of duplex stainless steel pipes by using the combination of annular groove and rubber gasket to prevent leakage of duplex stainless steel pipes. Then, the modular locking structure of insert post, rotating plate and bolt is adopted to make installation and disassembly more convenient and improve the disassembly efficiency and maintenance efficiency of duplex stainless steel pipes. 2. This utility model uses the combination of T-shaped plate and arc-shaped cover to ensure a stable wrapping of the outside of the duplex stainless steel pipe, thereby improving the overall protection capability. At the same time, the buffer structure of rubber strip and support plate can enhance the impact resistance, thereby increasing the buffering performance of the arc-shaped cover and extending the service life of the duplex stainless steel pipe. Attached Figure Description
[0012] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, for those skilled in the art, other drawings can be obtained based on these drawings without creative effort. Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2 This is a utility model Figure 1 Schematic diagram of the structure of the middle annular groove and rubber pad; Figure 3 This is a utility model Figure 1 Schematic diagram of the structure of the second stainless steel tube and the second circular ring; Figure 4 This is a utility model Figure 1 A schematic diagram of the structure of the first stainless steel pipe and the first circular ring; Figure 5 This is a utility model Figure 1Installation diagram of stainless steel pipe and fixing plate; Figure 6 This is a utility model Figure 5 A schematic diagram of the structure of the arc-shaped cover, rubber strip, and support plate; The attached figures are labeled as follows: 1. Stainless steel pipe one; 2. Stainless steel pipe two; 3. Circular groove; 4. Rubber pad; 5. First circular ring; 6. Second circular ring; 7. U-shaped seat one; 8. Rotary plate; 9. Circular groove; 10. U-shaped seat two; 11. First bolt; 12. Nut; 13. Fixing block one; 14. Insert post; 15. Fixing block two; 16. Slot; 17. Mounting block; 18. L-shaped plate; 19. Second bolt; 20. Internal thread groove; 21. Fixing plate; 22. T-slot; 23. T-shaped plate; 24. Third bolt; 25. Arc-shaped cover; 26. Rubber strip; 27. Support plate. Detailed Implementation
[0013] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of the present utility model.
[0014] like Figures 1 to 6 As shown, a high-strength duplex stainless steel pipe includes a stainless steel pipe 1 and a stainless steel pipe 2. A circular groove 3 is provided on one side of the stainless steel pipe 1. A rubber pad 4 adapted to the circular groove 3 is fixedly connected inside the circular groove 3. A first circular ring 5 is fixedly connected inside the stainless steel pipe 1. U-shaped seats 7 are fixedly connected to both ends of the stainless steel pipe 1. U-shaped seats 10 are fixedly connected to both ends of the stainless steel pipe 2. Both U-shaped seats 7 are rotatably connected to a rotating plate 8. One side of each rotating plate 8 is provided with a through circular groove 9. One side of each U-shaped seat 10 is secured with a first bolt 11. The outer surface of each first bolt 11 is threaded with a nut 12. The other two ends of the stainless steel tube 1 are fixedly connected to a fixing block 13. One side of each fixing block 13 is fixedly connected to two inserts 14. The other two ends of the stainless steel tube 2 are fixedly connected to a fixing block 15. One side of each fixing block 15 is provided with a through slot 16.
[0015] The outer surfaces of stainless steel pipe 1 and stainless steel pipe 2 are connected with mounting blocks 17. Each of the four mounting blocks 17 has an L-shaped plate 18 snapped onto one side. One side of the L-shaped plate 18 passes through the mounting block 17 and extends to the other side of the mounting block 17. Each of the four L-shaped plates 18 has a through internal thread groove 20 on one side.
[0016] The other two mounting blocks 17 each have a second bolt 19 threaded to one end, which is adapted to the internal thread groove 20. One side of the second bolt 19 passes through the mounting block 17 and extends into the interior of the mounting block 17. One side of the L-shaped plate 18 is snapped into the interior of the mounting block 17. The L-shaped plate 18 is pushed into the interior of the mounting block 17, and then the second bolt 19 is screwed in so that the second bolt 19 is threaded into the internal thread groove 20 of the L-shaped plate 18. This is used to further assemble and position the stainless steel tube 1 and the stainless steel tube 2, and strengthen the connection between the duplex stainless steel tubes.
[0017] Both ends of stainless steel pipe 1 and stainless steel pipe 2 are fixedly connected to fixing plates 21. Each of the four fixing plates 21 has a T-slot 22 on one side. Each of the four T-slots 22 has a T-plate 23 inserted inside. Each of the four T-plates 23 has an arc-shaped cover 25 fixedly connected to one side.
[0018] Rubber strips 26 are connected to one side of each of the four arc-shaped covers 25. Two symmetrically arranged support plates 27 are fixedly connected inside each of the four arc-shaped covers 25. The support plates 27 can be used to support and position the arc-shaped covers 25, ensuring the stability of the arc-shaped covers 25. The lower side of each of the four fixing plates 21 is threaded with a third bolt 24. One side of the third bolt 24 passes through the fixing plate 21 and extends into the interior of the T-slot 22. Rotating the third bolt 24 can allow it to enter the T-slot 22 of the fixing plate 21, so that the third bolt 24 can limit and fix the T-slot 23, ensuring the stability of the arc-shaped covers 25 during installation.
[0019] One side of the first bolt 11 passes through the second U-shaped seat 10 and extends to the lower side of the second U-shaped seat 10. One side of the first bolt 11 is snapped into the inside of the circular groove 9. One side of the insert post 14 is snapped into the inside of the slot 16. One side of the stainless steel tube 2 is fixedly connected to a second circular ring 6 that is adapted to the inside of the stainless steel tube 1.
[0020] The working principle of the high-strength duplex stainless steel pipe provided by this utility model is as follows: By engaging the second ring 6 at stainless steel tube 2 into the annular groove 3 of stainless steel tube 1, the rubber gasket 4 in the annular groove 3 will also act as a seal, making the seal between the duplex stainless steel tubes better and less prone to leakage. At this time, the first ring 5 at stainless steel tube 1 will also engage into the interior of stainless steel tube 2 for further sealing and positioning of stainless steel tube 1 and stainless steel tube 2. Then, as the two stainless steel tubes are assembled, the two sets of inserts 14 will be inserted into the slots 16 of the two fixing blocks 15. Subsequently, the two rotating plates 8 will be rotated into the interior of the two U-shaped seats 10, and the two first bolts 11 will be engaged into the annular grooves 9 of the two rotating plates 8 and the U-shaped seats 10. Tightening the two nuts 12 onto the two first bolts 11 will help to securely lock the two rotating plates 8 for all-round positioning between the duplex stainless steel tubes. At the same time, as long as the inserts 14 and rotating plates 8 are released from the limitation on the duplex stainless steel tubes, the two duplex stainless steel tubes can be flexibly and conveniently removed, saving time and effort and improving the disassembly efficiency of the duplex stainless steel tubes. By attaching the T-shaped plate 23 to the T-shaped groove 22 of the fixing plate 21, the T-shaped plate 23 can drive the arc-shaped cover 25 to be fixed on the outside of the duplex stainless steel pipe. At this time, the two symmetrically arranged arc-shaped covers 25 can safely and reliably surround the entire duplex stainless steel pipe. In addition, the rubber strip 26 and support plate 27 at the arc-shaped cover 25 can increase the buffer performance of the arc-shaped cover 25, which is conducive to improving the strength and protection of the duplex stainless steel pipe and extending the service life of the high-strength duplex stainless steel pipe.
[0021] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model.
Claims
1. A high-strength duplex stainless steel pipe, comprising stainless steel pipe one (1) and stainless steel pipe two (2), characterized in that, A circular groove (3) is provided on one side of the stainless steel tube (1). A rubber pad (4) adapted to the circular groove (3) is fixedly connected inside the circular groove (3). A first circular ring (5) is fixedly connected inside the stainless steel tube (1). U-shaped seat (7) is fixedly connected to both ends of the stainless steel tube (1). U-shaped seat (10) is fixedly connected to both ends of the stainless steel tube (2). Both U-shaped seats (7) are rotatably connected to a rotating plate (8). A through circular groove (9) is opened on one side of each of the two rotating plates (8). A first bolt (11) is snapped onto one side of each of the two U-shaped seats (10). Nuts (12) are threaded onto the outer surfaces of the two first bolts (11). Fixing blocks (13) are fixedly connected to both ends of the stainless steel tube (1). Two inserts (14) are fixedly connected to one side of each of the two fixing blocks (13). Fixing blocks (15) are fixedly connected to both ends of the stainless steel tube (2). A through slot (16) is opened on one side of each of the two fixing blocks (15).
2. The high-strength duplex stainless steel pipe according to claim 1, characterized in that, The outer surfaces of the stainless steel tube 1 (1) and stainless steel tube 2 (2) are connected with mounting blocks (17). Each of the four mounting blocks (17) has an L-shaped plate (18) snapped onto one side. One side of the L-shaped plate (18) passes through the mounting block (17) and extends to the other side of the mounting block (17). Each of the four L-shaped plates (18) has a through internal thread groove (20) on one side.
3. A high-strength duplex stainless steel pipe according to claim 2, characterized in that, The other two mounting blocks (17) are threaded to one end with a second bolt (19) that is compatible with the internal thread groove (20). One side of the second bolt (19) passes through the mounting block (17) and extends into the interior of the mounting block (17). One side of the L-shaped plate (18) is snapped into the interior of the mounting block (17).
4. A high-strength duplex stainless steel pipe according to claim 1, characterized in that, Both ends of the stainless steel pipe one (1) and stainless steel pipe two (2) are fixedly connected to a fixing plate (21). A T-shaped groove (22) is opened on one side of each of the four fixing plates (21). A T-shaped plate (23) is snapped into the inside of each of the four T-shaped grooves (22). An arc-shaped cover (25) is fixedly connected to one side of each of the four T-shaped plates (23).
5. A high-strength duplex stainless steel pipe according to claim 4, characterized in that, Rubber strips (26) are connected in an array on one side of each of the four arc-shaped covers (25). Two symmetrically arranged support plates (27) are fixedly connected inside each of the four arc-shaped covers (25). A third bolt (24) is threadedly connected to the lower side of each of the four fixed plates (21). One side of the third bolt (24) passes through the fixed plate (21) and extends into the interior of the T-slot (22).
6. A high-strength duplex stainless steel pipe according to claim 1, characterized in that, One side of the first bolt (11) passes through the second U-shaped seat (10) and extends to the lower side of the second U-shaped seat (10). One side of the first bolt (11) is snapped into the inside of the circular groove (9). One side of the insert (14) is snapped into the inside of the slot (16). One side of the stainless steel tube (2) is fixedly connected to a second circular ring (6) that is adapted to the inside of the stainless steel tube (1).