Riveted thin-walled stainless steel pipe

Abstract

This utility model relates to the technical field of ring-pressed thin-walled stainless steel pipes, specifically a ring-pressed connection type thin-walled stainless steel pipe, including a thin-walled stainless steel pipe body. One end of the thin-walled stainless steel pipe body is clamped to a pipe fitting. The outer surface of the pipe fitting is ring-pressed with an annular groove and an annular arc groove. The annular groove is provided with a lower clamp and an upper clamp respectively. Two symmetrically arranged U-shaped seats are fixedly connected to one side of the lower clamp and the upper clamp respectively. Transverse pressure blocks are clamped inside the four U-shaped seats. This utility model uses transverse pressure blocks and positioning blocks, and further supports them with support blocks arrayed on the inner side of the arc plate. This design provides stable external support for the connection of the thin-walled stainless steel pipe. This structure can effectively suppress the bending and deformation of the pipe caused by its own weight, fluid pressure or external vibration, significantly enhance its bending stiffness and overall mechanical stability, and improve its long-term safety and reliability.

Description

Technical Field

[0001] This utility model relates to the technical field of ring-pressed thin-walled stainless steel pipes, specifically ring-pressed connection type thin-walled stainless steel pipes. Background Technology

[0002] Ring-pressed thin-walled stainless steel pipe is a type of thin-walled stainless steel pipe processed using a ring hammer rolling process. Its advantages include higher strength, better corrosion resistance, and smaller cross-sectional deformation, thereby achieving a firm and sealed connection between the pipe and the fittings.

[0003] In actual use, the connection between thin-walled stainless steel pipes and fittings is usually achieved by ring pressing. After the ring pressing is completed, due to the "thin wall" characteristic of the thin-walled stainless steel pipe, coupled with long-term use, the connection is prone to bending and deformation, which in turn affects the sealing performance and stability of the ring-pressed thin-walled stainless steel pipe. Utility Model Content

[0004] The purpose of this invention is to provide a ring-pressed thin-walled 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:

[0006] The ring-pressed thin-walled stainless steel pipe includes a thin-walled stainless steel pipe body, one end of which is clamped to a pipe fitting. The outer surface of the pipe fitting is ring-pressed with an annular groove and an annular arc groove. The annular groove is provided with a lower clamp and an upper clamp respectively. Two symmetrically arranged U-shaped seats are fixedly connected to one side of the lower clamp and the upper clamp respectively. A transverse pressure block is clamped inside each of the four U-shaped seats. Two first U-shaped plates are fixedly connected to one side of the transverse pressure block.

[0007] Both first U-shaped plates are rotatably connected to arc plates inside, and the inner sides of both arc plates are connected in an array of support blocks for fitting pipe fittings. Two second U-shaped plates are fixedly connected to one side of another transverse pressure block, and two second fastening bolts are snapped into one side of each of the two second U-shaped plates.

[0008] Preferably, both second U-shaped plates have internal threaded grooves inside, and both arc plates have through circular grooves on one side. One side of the second fastening bolt passes through the circular groove and is threaded into the inside of the internal threaded groove.

[0009] Preferably, both ends of the transverse pressure block are fixedly connected to a first positioning block for supporting the pipe fitting, and both ends of the transverse pressure block are fixedly connected to a second positioning block for supporting the pipe fitting, with the first positioning block and the second positioning block arranged symmetrically.

[0010] Preferably, both ends of the U-shaped seat are threaded with a third fastening bolt for fixing the transverse pressure block, and one side of the third fastening bolt passes through the U-shaped seat and extends into the interior of the transverse pressure block.

[0011] Preferably, a second rubber ring is fixedly connected to the outer surface of the thin-walled stainless steel pipe body, and a first rubber ring is fixedly connected to the inside of the pipe fitting. The second rubber ring and the first rubber ring are sealed by a ring pressing operation. Two first fastening bolts are symmetrically arranged on the lower clamp and the upper clamp, and nuts are threaded onto the outer surface of the two first fastening bolts.

[0012] Preferably, the lower side of the first fastening bolt passes through the upper clamp and extends to the lower side of the lower clamp, and the annular groove and annular arc groove are used to seal the thin-walled stainless steel pipe body and fittings.

[0013] The beneficial effects of this utility model are:

[0014] 1. This utility model uses transverse pressure blocks and positioning blocks, and further supports them with support blocks distributed in an array on the inner side of the arc plate. This design provides a stable external support for the connection of thin-walled stainless steel pipes. This structure can effectively suppress the bending and deformation of the pipe caused by its own weight, fluid pressure or external vibration, significantly enhance its bending stiffness and overall mechanical stability, and improve its safety and reliability in long-term use.

[0015] 2. This utility model uses the elastic seal formed by compressing the first and second rubber rings to effectively absorb slight vibrations and achieve initial sealing. The second barrier is a rigid mechanical locking seal formed by the plastic deformation of the pipe and fittings through ring compression, which tightly interlocks with each other. The two barriers work together to improve the sealing reliability and leakage prevention capability of the thin-walled stainless steel pipe connection. Attached Figure Description

[0016] 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.

[0017] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0018] Figure 2 This is a utility model Figure 1 Structural diagram of the lower clamp, upper clamp, and U-shaped seat;

[0019] Figure 3 This is a utility model Figure 1 Installation diagram of the first U-shaped plate and the arc plate;

[0020] Figure 4 This is a utility model Figure 3 Enlarged view of point A in the middle;

[0021] Figure 5 This is a utility model Figure 1 Installation diagram of the U-shaped seat, transverse pressure block and third fastening bolt;

[0022] Figure 6 This is a utility model Figure 2 A schematic diagram of the installation of the first and second rubber rings;

[0023] The attached figures are labeled as follows:

[0024] 1. Thin-walled stainless steel pipe body; 2. Pipe fittings; 3. First rubber ring; 4. Second rubber ring; 5. Annular groove; 6. Lower clamp; 7. Upper clamp; 8. First fastening bolt; 9. Nut; 10. U-shaped seat; 11. Transverse pressure block; 12. First U-shaped plate; 13. Arc plate; 14. Second U-shaped plate; 15. Internal thread groove; 16. Second fastening bolt; 17. Circular groove; 18. First positioning block; 19. Second positioning block; 20. Annular arc groove; 21. Third fastening bolt; 22. Support block. Detailed Implementation

[0025] 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.

[0026] like Figures 1 to 6 As shown, the ring-pressed thin-walled stainless steel pipe includes a thin-walled stainless steel pipe body 1. One end of the thin-walled stainless steel pipe body 1 is clamped to a pipe fitting 2. The outer surface of the pipe fitting 2 is ring-pressed with an annular groove 5 and an annular arc groove 20. The annular groove 5 is respectively provided with a lower clamp 6 and an upper clamp 7. Two symmetrically arranged U-shaped seats 10 are fixedly connected to one side of the lower clamp 6 and the upper clamp 7. A transverse pressure block 11 is clamped inside each of the four U-shaped seats 10. Two first U-shaped plates 12 are fixedly connected to one side of the transverse pressure block 11.

[0027] Both first U-shaped plates 12 are rotatably connected to arc plates 13 inside. The inner sides of the two arc plates 13 are connected in an array of support blocks 22 for fitting the pipe fitting 2. Two second U-shaped plates 14 are fixedly connected to one side of another transverse pressure block 11. The two second U-shaped plates 14 are snapped with second fastening bolts 16 on one side. The array of support blocks 22 and transverse pressure blocks 11 can evenly support the connection between the thin-walled stainless steel pipe and the pipe fitting 2, which not only significantly enhances the bending stiffness of the thin-walled stainless steel pipe, but also makes the ring-pressed thin-walled stainless steel pipe more stable and reliable in use, ensuring safety and durability in long-term use.

[0028] Both second U-shaped plates 14 have internal threaded grooves 15 inside, and both arc plates 13 have through circular grooves 17 on one side. One side of the second fastening bolt 16 passes through the circular grooves 17 and is threaded into the interior of the internal threaded grooves 15.

[0029] Both ends of the transverse pressure block 11 are fixedly connected to a first positioning block 18 for supporting the pipe fitting 2, and both ends of the transverse pressure block 11 are fixedly connected to a second positioning block 19 for supporting the pipe fitting 2. The first positioning block 18 and the second positioning block 19 are symmetrically arranged, wherein the first positioning block 18 and the second positioning block 19 can be evenly supported at the connection between the thin-walled stainless steel pipe body 1 and the pipe fitting 2, making the bending stiffness of the entire thin-walled stainless steel pipe stronger.

[0030] Both ends of the U-shaped seat 10 are threaded with a third fastening bolt 21 for fixing the transverse pressure block 11. One side of the third fastening bolt 21 passes through the U-shaped seat 10 and extends into the interior of the transverse pressure block 11.

[0031] A second rubber ring 4 is fixedly connected to the outer surface of the thin-walled stainless steel pipe body 1, and a first rubber ring 3 is fixedly connected to the inside of the pipe fitting 2. The second rubber ring 4 and the first rubber ring 3 are sealed by a ring compression operation. Two first fastening bolts 8 are symmetrically arranged on the lower clamp 6 and the upper clamp 7. Nuts 9 are threaded onto the outer surface of the two first fastening bolts 8. The first rubber ring 3 and the second rubber ring 4 undergo symmetrical compression deformation under uniform radial pressure. This compression deformation makes the two rubber rings fit tightly together and form an elastic contact surface that squeezes against each other, thereby improving the sealing performance.

[0032] The lower side of the first fastening bolt 8 passes through the upper clamp 7 and extends to the lower side of the lower clamp 6. The annular groove 5 and the annular arc groove 20 are used to seal the thin-walled stainless steel pipe body 1 and the pipe fitting 2. The bolts and nuts 9 above all use fine threads and have a large thread density, which makes the overall self-locking stronger and ensures the stability during use.

[0033] The working principle of the ring-compression connection type thin-walled stainless steel pipe provided by this utility model is as follows:

[0034] The lower clamp 6 and upper clamp 7 can be fixed into the annular groove 5 of the pipe fitting 2 using two first fastening bolts 8 and nuts 9. Then, four transverse pressure blocks 11 are sequentially snapped into the inside of the U-shaped seat 10. Subsequently, the third fastening bolt 21 is tightened to fix the third fastening bolt 21 into the inside of the transverse pressure blocks 11, thereby locking the four transverse pressure blocks 11. At this time, the four transverse pressure blocks 11 and the first positioning blocks 18 and the second positioning blocks 19 on both sides of the transverse pressure blocks 11 can be fitted and positioned against the outer surface of the thin-walled stainless steel pipe body 1 and the pipe fitting 2. Then, respectively... The arc plate 13 is rotated into the interior of the second U-shaped plate 14, and then the second fastening bolt 16 is inserted into the circular groove 17 of the second U-shaped plate 14 and the arc plate 13. Then the second fastening bolt 16 is tightened so that the second fastening bolt 16 is threaded into the interior of the internal thread groove 15. In this way, the support blocks 22 distributed in an array on the inner side of the arc plate 13 can cooperate with the support blocks 22 to support the thin-walled stainless steel pipe and pipe fitting 2, increase the bending stiffness of the thin-walled stainless steel pipe, make the ring-pressed thin-walled stainless steel pipe more stable and reliable in use, and improve its sealing and stability during use.

[0035] By connecting and fixing the thin-walled stainless steel pipe body 1 and the fitting 2 through ring compression, the second rubber ring 4 on the outer surface of the thin-walled stainless steel pipe body 1 and the first rubber ring 3 inside the fitting 2 are uniformly compressed, allowing the second rubber ring 4 and the first rubber ring 3 to fit together, increasing the sealing performance of the thin-walled stainless steel pipe and forming the first elastic sealing barrier that can withstand slight vibrations. Furthermore, the strong radial pressure causes the thin-walled stainless steel pipe and the fitting 2 to undergo plastic deformation, tightly interlocking with each other to form the second rigid sealing barrier, thereby improving the sealing performance of the ring-compression connected thin-walled stainless steel pipe and making it less prone to leakage.

[0036] 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 thin-walled stainless steel pipe of a ring press connection type, comprising a thin-walled stainless steel pipe main body (1), characterized by, One end of the thin-walled stainless steel pipe body (1) is clamped with a pipe fitting (2). The outer surface of the pipe fitting (2) is provided with an annular groove (5) and an annular arc groove (20). The annular groove (5) is provided with a lower clamp (6) and an upper clamp (7) respectively. Two U-shaped seats (10) are fixedly connected to one side of the lower clamp (6) and the upper clamp (7). The four U-shaped seats (10) are all clamped with a transverse pressure block (11). Two first U-shaped plates (12) are fixedly connected to one side of the transverse pressure block (11). The interior of each of the two first U-shaped plates (12) is rotatably connected to an arc plate (13), and the inner sides of the two arc plates (13) are connected in an array of support blocks (22) for fitting the pipe fitting (2). Two second U-shaped plates (14) are fixedly connected to one side of another transverse pressure block (11), and a second fastening bolt (16) is snapped onto one side of each of the two second U-shaped plates (14).

2. The ring press connected thin-wall stainless steel pipe according to claim 1, characterized by The interior of each of the two second U-shaped plates (14) is provided with an internal thread groove (15), and the side of each of the two arc plates (13) is provided with a through circular groove (17). The side of the second fastening bolt (16) passes through the circular groove (17) and is threaded into the interior of the internal thread groove (15).

3. The ring press connected thin-wall stainless steel pipe according to claim 1, characterized by Both ends of the transverse pressure block (11) are fixedly connected to a first positioning block (18) for supporting the pipe fitting (2), and both ends of the transverse pressure block (11) are fixedly connected to a second positioning block (19) for supporting the pipe fitting (2). The first positioning block (18) and the second positioning block (19) are symmetrically arranged.

4. The ring-pressed thin-walled stainless steel pipe according to claim 1, characterized in that, Both ends of the U-shaped seat (10) are threaded with a third fastening bolt (21) for fixing the transverse pressure block (11). One side of the third fastening bolt (21) passes through the U-shaped seat (10) and extends into the interior of the transverse pressure block (11).

5. The ring-pressed thin-walled stainless steel pipe according to claim 1, characterized in that, The outer surface of the thin-walled stainless steel pipe body (1) is fixedly connected with a second rubber ring (4), and the inside of the pipe fitting (2) is fixedly connected with a first rubber ring (3). The second rubber ring (4) and the first rubber ring (3) are sealed by a ring pressing operation. Two first fastening bolts (8) are symmetrically arranged on the lower clamp (6) and the upper clamp (7). Nuts (9) are threaded on the outer surface of the two first fastening bolts (8).

6. The ring-pressed thin-walled stainless steel pipe according to claim 5, characterized in that, The lower side of the first fastening bolt (8) passes through the upper clamp (7) and extends to the lower side of the lower clamp (6). The annular groove (5) and the annular arc groove (20) are used to seal the thin-walled stainless steel pipe body (1) and the fitting (2).

Images