High-flatness super duplex stainless steel welded pipe
By introducing structures such as tubes, sealing grooves and threaded rods into super duplex stainless steel welded pipes, the problems of pipe port deformation and impurities entering during transportation are solved, and high flatness and sealing effect are achieved.
Patent Information
- Application Number
- CN202421918135.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-08-08
- Publication Date
- 2025-08-01
- Estimated Expiration
- 2034-08-08
AI Technical Summary
Super duplex stainless steel welded pipes are easily affected by collision deformation during transportation, affecting flatness, and impurities such as dust are easily entered into the pipe, affecting the use effect.
A high-flatness super duplex stainless steel welded pipe is designed to seal and seal the pipe port through the combination of insertion tubes, annular sealing grooves, sealing strips, threaded rods and rotating pipes, and the flatness of the pipe port is maintained by using the internal and external pressure difference, and the loosening is prevented through coil springs and limiting grooves.
It effectively prevents the pipe port from deforming due to collision, maintains the overall flatness of the steel pipe, and prevents dust from entering, ensuring the sealing effect during transportation.
Smart Images
Figure CN223178477U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of duplex stainless steel welded pipes, in particular to a super duplex stainless steel welded pipe with high flatness. Background Technique
[0002] The super duplex stainless steel welded pipe is a high-performance special alloy material. Its yield strength is twice that of austenitic stainless steel. This characteristic enables designers to reduce the weight when designing products, making this alloy more advantageous than 316 and 317L. Due to the high contents of chromium and molybdenum, it has excellent resistance to pitting corrosion and uniform corrosion. Moreover, the duplex structure ensures that the steel has a high resistance to stress corrosion cracking, and at the same time, the mechanical strength is also very high. Therefore, it is widely used in special chemical environment equipment.
[0003] At present, during the transportation of the super duplex stainless steel welded pipe, the two ends of the steel pipe are easily collided and deformed, affecting the overall flatness of the steel pipe and subsequent use. Moreover, dust and other impurities are also easily introduced into the interior of the steel pipe, which is not conducive to subsequent use. For this reason, we propose a super duplex stainless steel welded pipe with high flatness. Content of the Utility Model
[0004] The purpose of the utility model is to provide a super duplex stainless steel welded pipe with high flatness, which has the advantages of being convenient to seal the two ends of the pipe orifice during the transportation of the super duplex stainless steel welded pipe, avoiding deformation caused by collision, ensuring the overall flatness of the steel pipe, and preventing dust and other impurities from entering the interior of the steel pipe, solving the problems that during the transportation of the current super duplex stainless steel welded pipe, the two ends of the steel pipe are easily collided and deformed, affecting the overall flatness of the steel pipe and subsequent use, and dust and other impurities are also easily introduced into the interior of the steel pipe, which is not conducive to subsequent use.
[0005] To achieve the above purpose, the utility model provides the following technical solution: a super duplex stainless steel welded pipe with high flatness, including a super duplex stainless steel welded pipe main body and an insertion pipe. An annular sealing groove is arranged below the insertion pipe, and one end of the super duplex stainless steel welded pipe main body is located inside the annular sealing groove. A sealing strip is arranged inside the annular sealing groove. A fixing plate is fixedly installed at the middle position inside the insertion pipe. A threaded hole is arranged at the axial center position of the upper surface of the fixing plate. A threaded rod is movably inserted into the threaded hole. One end of the threaded rod below the fixing plate is fixedly connected with a piston plate, and one end of the threaded rod above the fixing plate is fixedly connected with a rotating pipe.
[0006] Preferably, a chamfer is arranged at the position close to the edge of the lower surface of the insertion pipe, which is convenient for the insertion pipe to be inserted into the steel pipe from the pipe orifice of the super duplex stainless steel welded pipe into the interior of the steel pipe.
[0007] Preferably, air holes are arranged on the upper surface of the fixing plate.
[0008] Preferably, a coil spring is provided inside the rotating tube, and both ends of the coil spring are fixedly connected to a sliding rod. Limiting grooves are symmetrically provided at positions on both sides of the inner wall of the insert tube near the upper surface. During the rotation of the rotating tube and the movement of the piston plate driven by the threaded rod, the elastic force of the coil spring causes the end of the sliding rod to be inserted into the limiting groove, thereby limiting the sliding rod and preventing the threaded rod and the rotating tube from loosening and causing the insert tube to slip off the pipe mouth of the super duplex stainless steel welded pipe.
[0009] Preferably, a toggle block is fixedly mounted on the upper surface of the two slide bars, and the slide bar can be separated from the limiting groove by moving the slide bar through the toggle block.
[0010] Compared with the prior art, the beneficial effects of the present invention are as follows:
[0011] 1. The utility model provides a super duplex stainless steel welded pipe body, an intubation pipe, an annular sealing groove, a sealing strip, a fixing plate, a threaded hole, a threaded rod, a rotating pipe and a piston plate, so as to facilitate sealing the pipe ends of the steel pipe during transportation, thereby avoiding deformation due to collision, ensuring the overall flatness of the steel pipe, and preventing dust and other impurities from entering the interior of the steel pipe. The two intubations are respectively inserted into the two pipe ends of the super duplex stainless steel welded pipe, and the pipe ends are also inserted into the annular sealing groove, and the sealing strip plays a sealing role. The rotating pipe drives the threaded rod to rotate, so that the two piston plates move in opposite directions. The intubation pipe is adsorbed at the pipe end by the pressure difference between the inside and outside of the super duplex stainless steel welded pipe, thereby avoiding deformation of the pipe end of the super duplex stainless steel welded pipe due to collision, ensuring the overall flatness of the steel pipe, and preventing dust and other impurities from entering the interior of the steel pipe.
[0012] 2. The present invention achieves the effect of limiting the rotation of the rotating tube by providing a coil spring, a slide rod and a limit groove. When the rotating tube rotates and the piston plate is driven to move by the threaded rod, the elastic force of the coil spring causes the end of the slide rod to be inserted into the limit groove, thereby limiting the slide rod and preventing the threaded rod and the rotating tube from loosening and causing the cannula to slip off the tube mouth of the super duplex stainless steel welded tube.
[0013] 3. The utility model provides chamfers to facilitate the insertion of the cannula into the pipe opening of the super duplex stainless steel welded pipe and into the interior of the steel pipe. BRIEF DESCRIPTION OF THE DRAWINGS
[0014] Figure 1 It is a three-dimensional schematic diagram of the utility model;
[0015] Figure 2 This is a schematic diagram of the main cross-sectional structure of the utility model;
[0016] Figure 3 This is a schematic diagram of the main cross-sectional structure of the intubation tube of the utility model;
[0017] Figure 4 It is a schematic diagram of the partial main cross-sectional structure of the rotating tube of the present invention.
[0018] Figure numerals: 1. super duplex stainless steel welded pipe body; 2. insert tube; 3. rotating tube; 4. limiting groove; 5. sealing strip; 6. annular sealing groove; 7. air hole; 8. threaded hole; 9. fixing plate; 10. chamfer; 11. coil spring; 12. toggle block; 13. slide rod; 14. threaded rod; 15. piston plate. DETAILED DESCRIPTION
[0019] The technical solution of the present invention is further described below with reference to the accompanying drawings and specific embodiments.
[0020] Example 1
[0021] like Figures 1 - 4 As shown, the utility model proposes a high-flatness super duplex stainless steel welded pipe, comprising a super duplex stainless steel welded pipe body 1 and a plug 2. A chamfer 10 is provided near the edge of the lower surface of the plug 2 to facilitate the insertion of the plug 2 into the pipe mouth of the super duplex stainless steel welded pipe body 1. An annular sealing groove 6 is provided at the bottom of the plug 2, and one end of the super duplex stainless steel welded pipe body 1 is located inside the annular sealing groove 6. A sealing strip 5 is provided inside the annular sealing groove 6. A fixing plate 9 is fixedly installed at the middle position inside the plug 2. A threaded hole 8 is provided at the axial position on the upper surface of the fixing plate 9. A threaded rod 14 is movably inserted inside the threaded hole 8. The end of the threaded rod 14 below the fixing plate 9 is fixedly connected to a piston plate 15. The upper surface of the fixing plate 9 is provided with an air hole 7. The end of the threaded rod 14 above the fixing plate 9 is fixedly connected to a rotating tube 3, and both ends of the rotating tube 3 are through.
[0022] When the present invention is in use, the two insert tubes 2 are respectively inserted into the two pipe openings of the super duplex stainless steel welded pipe body 1, and the pipe openings of the super duplex stainless steel welded pipe body 1 are also inserted into the annular sealing groove 6, and the sealing strip 5 plays a sealing role. Then, the threaded rod 14 is driven to rotate by the rotating tube 3, so that the two piston plates 15 move in opposite directions. Then, the pressure difference between the inside and outside of the super duplex stainless steel welded pipe body 1 causes the insert tubes 2 to be adsorbed at the pipe openings, thereby preventing the pipe openings of the super duplex stainless steel welded pipe body 1 from being deformed due to collision, ensuring the overall flatness of the steel pipe, and preventing impurities such as dust from entering the interior of the steel pipe.
[0023] Example 2
[0024] like Figures 1 - 4As shown, the utility model proposes a high-flatness super duplex stainless steel welded pipe. Compared with the first embodiment, this embodiment also includes a coil spring 11 arranged inside the rotating tube 3, and both ends of the coil spring 11 are fixedly connected to a slide rod 13, and the two ends of the slide rod 13 are respectively located inside and outside the rotating tube 3, and the inner wall of the insert tube 2 is symmetrically provided with limiting grooves 4 on both sides near the upper surface. The upper surfaces of the two slide rods 13 are fixedly installed with a toggle block 12. By swinging the slide rod 13 by the toggle block 12, the slide rod 13 can be separated from the limiting groove 4.
[0025] In this embodiment, during the process of the rotating tube 3 rotating and driving the piston plate 15 to move via the threaded rod 14, the elastic force of the coil spring 11 causes the end of the sliding rod 13 to be inserted into the limiting groove 4, thereby restricting the sliding rod 13 and preventing the threaded rod 14 and the rotating tube 3 from loosening and causing the cannula 2 to slip off the tube opening of the super duplex stainless steel welded pipe body 1.
[0026] The above specific embodiments are only several preferred embodiments of the present invention. Based on the technical solutions of the present invention and the relevant inspirations of the above embodiments, those skilled in the art can make various alternative improvements and combinations to the above specific embodiments.
Claims
1. A super duplex stainless steel welded pipe with high flatness, comprising a super duplex stainless steel welded pipe body (1) and an inserted pipe (2), characterized in that: A ring-shaped sealing groove (6) is provided below the cannula (2), and one end of the super duplex stainless steel welded pipe body (1) is located inside the ring-shaped sealing groove (6). A sealing strip (5) is arranged inside the ring-shaped sealing groove (6). A fixing plate (9) is fixedly installed at the middle position inside the cannula (2). A threaded hole (8) is arranged at the axial center position of the upper surface of the fixing plate (9). A threaded rod (14) is movably inserted into the threaded hole (8). One end of the threaded rod (14) below the fixing plate (9) is fixedly connected to a piston plate (15). One end of the threaded rod (14) above the fixing plate (9) is fixedly connected to a rotating tube (3).
2. A super duplex stainless steel welded pipe with high flatness according to claim 1, characterized in that: A chamfer (10) is arranged at a position close to the edge of the lower surface of the cannula (2).
3. A super duplex stainless steel welded pipe with high flatness according to claim 1, characterized in that: Air holes (7) are arranged on the upper surface of the fixing plate (9).
4. A super duplex stainless steel welded pipe with high flatness according to claim 1, characterized in that: A spiral spring (11) is arranged inside the rotating tube (3), and both ends of the spiral spring (11) are fixedly connected to sliding rods (13). Limiting grooves (4) are symmetrically arranged on both sides of the inner wall of the cannula (2) close to the upper surface.
5. The high flatness super duplex stainless steel welded pipe according to claim 4, characterized in that: Dialing blocks (12) are fixedly installed on the upper surfaces of the two sliding rods (13).