A pressure-resistant seamless stainless steel pipe

Abstract

The utility model relates to stainless steel pipe technical field, concretely is a kind of pressure -resistant seamless stainless steel pipe, including steel pipe main body, connecting mechanism and locking mechanism;Steel pipe main body outer periphery is provided with protective layer;Connecting mechanism is arranged in the end of protective layer surface for the connection between steel pipe main body;Connecting mechanism includes first connecting ring, second connecting ring and connecting barrel;First connecting ring is fixedly connected with one end of protective layer, second connecting ring is fixedly connected with the other end of protective layer, and connecting barrel is set on the surface of first connecting ring and is screw connection with first connecting ring;Locking mechanism is arranged in the end of the surface of protective layer for preventing connecting mechanism loose.The utility model is set between steel pipe main body, connecting mechanism and locking mechanism, and the cooperation of setting, the connection between pipeline and the maintenance overhaul of later period are convenient, the cooperation of setting between locking mechanism and connecting mechanism, avoid pipeline connection place loose and destroy the sealing of steel pipe connection.

Description

Technical Field

[0001] This utility model relates to the field of stainless steel pipe technology, specifically to a pressure-resistant seamless stainless steel pipe. Background Technology

[0002] Seamless stainless steel pipe is a hollow, long, round steel material, also known as seamless tube. It is widely used in industrial pipelines for petroleum, chemical, medical, food, light industry, and machinery, as well as in mechanical structural components. Furthermore, it is lighter in weight while maintaining the same bending and torsional strength, making it widely used in manufacturing mechanical parts and engineering structures, and also commonly used in furniture and kitchenware.

[0003] Chinese Patent No. CN215445383U discloses a pressure-resistant and corrosion-resistant seamless stainless steel pipe, including a connecting cylinder. Steel pipes are fixed to both ends of the connecting cylinder via a sleeve connection. A connecting component is fixedly connected to the center of the inner end wall of the connecting cylinder. One end of the steel pipe, located inside the connecting cylinder, is fixedly connected to the connecting component. A fixing component is provided on the outer wall of the top of the connecting cylinder. As can be seen from the above, this invention replaces the traditional welding method for connecting stainless steel pipes with a connecting component, effectively preventing corrosion at the weld joints. Simultaneously, the fixing component effectively improves the pressure resistance of the stainless steel pipe joints, thus significantly extending the service life of the stainless steel pipe.

[0004] However, the above technical solution has the following shortcomings: When connecting steel pipes, the steel pipes need to be inserted into the connecting cylinder from both ends. On the one hand, this plug-in connection method can only be carried out during the initial installation. When it is necessary to repair or replace the intermediate pipes later, it is very difficult to operate. On the other hand, when the steel pipe is in a vibrating working environment, the connection is prone to loosening, which will damage the sealing of the steel pipe connection and cause leakage of materials inside the steel pipe. Utility Model Content

[0005] The purpose of this invention is to address the problems existing in the background technology by proposing a pressure-resistant seamless stainless steel pipe.

[0006] The technical solution of this utility model: a pressure-resistant seamless stainless steel pipe, comprising:

[0007] The main body of the steel pipe is equipped with a protective layer on its outer perimeter.

[0008] A connecting mechanism, which is located at the end of the protective layer surface for connecting the steel pipe bodies;

[0009] The connecting mechanism includes a first connecting ring, a second connecting ring, and a connecting cylinder; the first connecting ring is fixedly connected to one end of the protective layer, the second connecting ring is fixedly connected to the other end of the protective layer, and the connecting cylinder is sleeved on the surface of the first connecting ring and threadedly connected to the first connecting ring;

[0010] A locking mechanism is provided at one end of the surface of the protective layer to prevent the connecting mechanism from loosening. One end of the locking mechanism is connected to the protective layer, and the other end of the locking mechanism is connected to the connecting mechanism.

[0011] Preferably, the protective layer includes a buffer layer, a high-temperature resistant layer, and a wear-resistant layer; the buffer layer is disposed on the outer periphery of the steel pipe body, the high-temperature resistant layer is disposed on the outer periphery of the buffer layer, and the wear-resistant layer is disposed on the outer periphery of the high-temperature resistant layer.

[0012] Preferably, the inner wall of the steel pipe body is provided with an anti-corrosion layer, which is made of PE coating.

[0013] Preferably, a first sealing ring is fixedly connected to one end of the connecting cylinder, the first sealing ring being adapted to the first connecting ring, and a second sealing ring is fixedly connected to the inner wall of the connecting cylinder, the second sealing ring being adapted to the second connecting ring.

[0014] Preferably, the locking mechanism includes a movable ring, a first locking ring, a second locking ring, and an adjusting component; the movable ring is slidably disposed on the surface of the protective layer near one end of the second connecting ring, the first locking ring is fixedly connected to the connecting cylinder, the second locking ring is fixedly connected to the movable ring, one end of the adjusting component is connected to the protective layer, and the other end of the adjusting component is connected to the movable ring.

[0015] Preferably, the adjusting assembly includes a fixed ring, a contact spring, an adjusting rod, and an adjusting frame; the fixed ring is fixedly connected to the protective layer; multiple contact springs are provided, one end of the contact spring is fixedly connected to the fixed ring, and the other end of the contact spring is fixedly connected to the movable ring; two adjusting rods are provided, one end of the adjusting rod is fixedly connected to the movable ring, and the other end of the adjusting rod passes through the fixed ring and is slidably connected to the fixed ring; the adjusting frame is movably mounted on the steel pipe body, the adjusting rod passes through the adjusting frame and is movably connected to the adjusting frame, and the end of the adjusting rod away from the movable ring is fixedly connected to a limit plate.

[0016] Compared with the prior art, the above-mentioned technical solution of this utility model has the following beneficial technical effects:

[0017] This utility model utilizes the coordinated arrangement of the steel pipe body, the connecting mechanism, and the locking mechanism. Rotating the connecting cylinder causes the first sealing ring to fit and seal with the first connecting ring, while simultaneously the second sealing ring fits and seals with the second connecting ring, thus completing the connection between the pipes. When the pipe needs to be replaced later, rotating the connecting cylinder allows the pipe to be disassembled and replaced with a new one. Through the coordinated arrangement of the locking mechanism and the connecting mechanism, the second locking ring, under the action of the spring force, fits with the first locking ring to prevent the connecting cylinder from loosening, thus avoiding loosening at the pipe connection and compromising the sealing performance of the steel pipe connection. Attached Figure Description

[0018] Figure 1 This is a perspective view of one embodiment of the present invention;

[0019] Figure 2 This utility model Figure 1 A magnified view of a section at point A in the middle;

[0020] Figure 3 This is a perspective view of the connection point in one embodiment of the present invention;

[0021] Figure 4 This is a cross-sectional view of the connection point in one embodiment of the present invention;

[0022] Figure 5 This utility model Figure 4 A magnified view of a section at point B in the middle;

[0023] Figure 6 This is a perspective view of the adjustment frame in one embodiment of the present invention.

[0024] Reference numerals: 1. Steel pipe body; 21. Buffer layer; 22. High temperature resistant layer; 23. Wear resistant layer; 31. First connecting ring; 32. Second connecting ring; 33. Connecting cylinder; 34. First sealing ring; 35. Second sealing ring; 41. Movable ring; 42. First locking ring; 43. Second locking ring; 441. Fixed ring; 442. Fitting spring; 443. Adjusting rod; 444. Adjusting frame; 445. Limiting plate; 5. Anti-corrosion layer. Detailed Implementation

[0025] Example 1

[0026] like Figure 1-6 As shown, the present invention proposes a pressure-resistant seamless stainless steel pipe, which includes a steel pipe body 1, a connecting mechanism and a locking mechanism;

[0027] The outer periphery of the steel pipe body 1 is provided with a protective layer. The steel pipe body 1 is a seamless stainless steel pipe. The inner wall of the steel pipe body 1 is provided with an anti-corrosion layer 5, which is made of PE coating.

[0028] The connecting mechanism is located at the end of the protective layer surface for connecting the steel pipe bodies 1;

[0029] The connecting mechanism includes a first connecting ring 31, a second connecting ring 32, and a connecting cylinder 33; the first connecting ring 31 is fixedly connected to one end of the protective layer, the second connecting ring 32 is fixedly connected to the other end of the protective layer, the connecting cylinder 33 is sleeved on the surface of the first connecting ring 31 and threadedly connected to the first connecting ring 31, a first sealing ring 34 is fixedly connected to one end of the connecting cylinder 33, the first sealing ring 34 is adapted to the first connecting ring 31, and a second sealing ring 35 is fixedly connected to the inner wall of the connecting cylinder 33, the second sealing ring 35 is adapted to the second connecting ring 32;

[0030] A locking mechanism is located at one end of the surface of the protective layer to prevent the connecting mechanism from loosening. One end of the locking mechanism is connected to the protective layer, and the other end is connected to the connecting mechanism.

[0031] Example 2

[0032] like Figure 4-5 As shown, the present invention proposes a pressure-resistant seamless stainless steel pipe. Compared with Embodiment 1, this embodiment also specifically discloses the structure of the protective layer. The protective layer includes a buffer layer 21, a high-temperature resistant layer 22, and a wear-resistant layer 23. The buffer layer 21 is disposed on the outer periphery of the steel pipe body 1 and is made of polyurethane. The high-temperature resistant layer 22 is disposed on the outer periphery of the buffer layer 21 and is made of aluminum silicate. The wear-resistant layer 23 is disposed on the outer periphery of the high-temperature resistant layer 22 and is coated with silicon carbide.

[0033] Example 3

[0034] like Figure 2-4 As shown, this utility model proposes a pressure-resistant seamless stainless steel pipe. Compared with Embodiment 2, this embodiment also specifically discloses the structure of the locking mechanism. The locking mechanism includes a movable ring 41, a first locking ring 42, a second locking ring 43, and an adjusting component. The movable ring 41 is slidably disposed on the surface of the protective layer near one end of the second connecting ring 32. The first locking ring 42 is fixedly connected to the connecting cylinder 33, and the second locking ring 43 is fixedly connected to the movable ring 41. One end of the adjusting component is connected to the protective layer, and the other end of the adjusting component is connected to the movable ring 41.

[0035] Example 4

[0036] like Figure 2-4 As shown, this utility model proposes a pressure-resistant seamless stainless steel pipe. Compared with Embodiment 3, this embodiment also specifically discloses the structure of the adjustment component. The adjustment component includes a fixed ring 441, a contact spring 442, an adjustment rod 443, and an adjustment frame 444. The fixed ring 441 is fixedly connected to the protective layer. Multiple contact springs 442 are provided. One end of the contact spring 442 is fixedly connected to the fixed ring 441, and the other end of the contact spring 442 is fixedly connected to the movable ring 41. Two adjustment rods 443 are provided. One end of the adjustment rod 443 is fixedly connected to the movable ring 41, and the other end of the adjustment rod 443 passes through the fixed ring 441 and is slidably connected to the fixed ring 441. The adjustment frame 444 is movably disposed on the steel pipe body 1. The adjustment rod 443 passes through the adjustment frame 444 and is movably connected to the adjustment frame 444. The adjustment frame 444 has a through-hole. The adjustment rod 443 passes through the adjustment frame 444 through the through-hole. The end of the adjustment rod 443 away from the movable ring 41 is fixedly connected to a limit plate 445.

[0037] During connection, align one end of the steel pipe body 1 with the other end of the steel pipe body 1, rotate the connecting cylinder 33 to drive the first sealing ring 34 and the second sealing ring 35 to rotate together. The connecting cylinder 33 is threadedly connected to the second connecting ring 32. Rotating the connecting cylinder 33 causes the first sealing ring 34 to fit and seal with the first connecting ring 31, and the second sealing ring 35 to fit and seal with the second connecting ring 32. The second locking ring 43 fits with the first locking ring 42 under the action of the spring force of the fitting spring 442 to prevent the connecting cylinder 33 from loosening. When disassembly is required, move the adjusting frame 444 to drive the second locking ring 43 to disengage from the first locking ring 42 through the adjusting rod 443 and the movable ring 41. Rotate the connecting cylinder 33 in the opposite direction to disengage the connecting cylinder 33 from the second connecting ring 32 to complete the disassembly.

[0038] The embodiments of the present invention have been described in detail above with reference to the accompanying drawings. However, the present invention is not limited thereto. Various changes can be made within the scope of knowledge possessed by those skilled in the art without departing from the spirit of the present invention.

Claims

1. A pressure-resistant seamless stainless steel pipe, characterized in that, include: The main body of the steel pipe (1) is provided with a protective layer on its outer periphery; A connecting mechanism, which is set at the end of the protective layer surface for connecting the steel pipe bodies (1); The connecting mechanism includes a first connecting ring (31), a second connecting ring (32), and a connecting cylinder (33); the first connecting ring (31) is fixedly connected to one end of the protective layer, the second connecting ring (32) is fixedly connected to the other end of the protective layer, and the connecting cylinder (33) is sleeved on the surface of the first connecting ring (31) and threadedly connected to the first connecting ring (31); A locking mechanism is provided at one end of the surface of the protective layer to prevent the connecting mechanism from loosening. One end of the locking mechanism is connected to the protective layer, and the other end of the locking mechanism is connected to the connecting mechanism.

2. The pressure-resistant seamless stainless steel pipe according to claim 1, characterized in that, The protective layer includes a buffer layer (21), a high-temperature resistant layer (22), and a wear-resistant layer (23); the buffer layer (21) is disposed on the outer periphery of the steel pipe body (1), the high-temperature resistant layer (22) is disposed on the outer periphery of the buffer layer (21), and the wear-resistant layer (23) is disposed on the outer periphery of the high-temperature resistant layer (22).

3. The pressure-resistant seamless stainless steel pipe according to claim 1, characterized in that, The inner wall of the steel pipe body (1) is provided with an anti-corrosion layer (5), which is made of PE coating.

4. The pressure-resistant seamless stainless steel pipe according to claim 1, characterized in that, A first sealing ring (34) is fixedly connected to one end of the connecting cylinder (33), and the first sealing ring (34) is adapted to the first connecting ring (31). A second sealing ring (35) is fixedly connected to the inner wall of the connecting cylinder (33), and the second sealing ring (35) is adapted to the second connecting ring (32).

5. The pressure-resistant seamless stainless steel pipe according to claim 1, characterized in that, The locking mechanism includes a movable ring (41), a first locking ring (42), a second locking ring (43), and an adjusting component; the movable ring (41) is slidably disposed on the surface of the protective layer near one end of the second connecting ring (32), the first locking ring (42) is fixedly connected to the connecting cylinder (33), the second locking ring (43) is fixedly connected to the movable ring (41), one end of the adjusting component is connected to the protective layer, and the other end of the adjusting component is connected to the movable ring (41).

6. The pressure-resistant seamless stainless steel pipe according to claim 5, characterized in that, The adjustment assembly includes a fixed ring (441), a contact spring (442), an adjustment rod (443), and an adjustment frame (444). The fixed ring (441) is fixedly connected to the protective layer. Multiple contact springs (442) are provided. One end of the contact spring (442) is fixedly connected to the fixed ring (441), and the other end of the contact spring (442) is fixedly connected to the movable ring (41). Two adjustment rods (443) are provided. One end of the adjustment rod (443) is fixedly connected to the movable ring (41), and the other end of the adjustment rod (443) passes through the fixed ring (441) and is slidably connected to the fixed ring (441). The adjustment frame (444) is movably set on the steel pipe body (1). The adjustment rod (443) passes through the adjustment frame (444) and is movably connected to the adjustment frame (444). The end of the adjustment rod (443) away from the movable ring (41) is fixedly connected to a limit plate (445).

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