Corrosion-resistant stainless steel pipe

Abstract

The utility model relates to the technical field of stainless steel pipes, and discloses a corrosion-resistant stainless steel pipe which comprises a pipe body, two corrosion-resistant sleeves are arranged on the outer side of the pipe body, fixing seats are fixedly mounted at the tops and the bottoms of the corrosion-resistant sleeves correspondingly, and connecting plates are arranged on the outer sides of the fixing seats; a fixing mechanism is arranged between the connecting plate and the fixing base, a piston cavity is formed in the fixing base, and a piston mechanism is arranged in the piston cavity. Compared with the prior art, the device has the following advantages and effects that the fixing mechanisms are arranged, the two corresponding fixing bases can be connected in a fastened mode through the connecting plates, the purpose that the corrosion-resistant sleeve is installed on the outer side of the pipe body can be achieved, the sealing mechanisms are arranged, the expanded sealing air bags can be tightly attached to the pipe body, and the sealing effect is good. The purposes of effectively preventing external corrosive media from invading from a gap between the corrosion-resistant sleeve and the pipe body and greatly reducing the risk that the pipe body is corroded can be achieved.

Description

Technical Field

[0001] This application relates to the field of stainless steel pipe technology, and in particular to a corrosion-resistant stainless steel pipe. Background Technology

[0002] Stainless steel pipe is a hollow, long, round steel material, mainly used in industrial pipelines for petroleum, chemical, medical, food, light industry, and machinery, as well as mechanical structural components. Due to its wide range of applications, stainless steel pipe is used in a variety of complex environments.

[0003] A search revealed a patent document with authorization announcement number CN220910704U, which discloses a corrosion-resistant stainless steel pipe, including a pipe with two sets of anti-corrosion materials on its outer side. A groove is formed on the outer side of the pipe, allowing the anti-corrosion materials to slide in connection with the pipe. A fixing mechanism is provided at one end of each anti-corrosion material. The fixing mechanism includes a first fixing block and a second fixing block, which are fixedly connected to the outer side of one end of the two sets of anti-corrosion materials. The first and second fixing blocks are of the same size. A rotating groove is formed at the top of the first fixing block, and screws are rotatably connected to both ends inside the rotating groove. A moving block is threadedly connected to the outer side of the screws. Two sets of fixing rods are fixedly connected to one end of each moving block. A circular hole is formed at the end of the second fixing block near the first fixing block, and one end of each fixing rod passes through the first fixing block and is inside the circular hole. By rotating the rotating block, the fixing rods move into the circular hole to fix the anti-corrosion materials.

[0004] In practical use, it has been found that existing stainless steel pipes enhance corrosion resistance by wrapping them with protective sleeves, but the sealing effect between the protective sleeve and the pipe body is not good, and external corrosive media can easily seep in through the gaps, failing to effectively protect the pipe body. Therefore, we propose a corrosion-resistant stainless steel pipe to solve the above problems. Utility Model Content

[0005] The purpose of this application is to address the shortcomings of existing technologies: existing stainless steel pipes enhance corrosion resistance by wrapping them with protective sleeves, but the sealing effect between the protective sleeve and the pipe body is not good, and external corrosive media can easily seep in through the gaps, thus failing to effectively protect the pipe body. Therefore, this application proposes a corrosion-resistant stainless steel pipe.

[0006] The above-mentioned technical objective of this application is achieved through the following technical solution: a corrosion-resistant stainless steel pipe, including a pipe body, two corrosion-resistant sleeves are provided on the outside of the pipe body, a fixing seat is fixedly installed on the top and bottom of the corrosion-resistant sleeves, and a connecting plate is provided on the outside of the fixing seat; a fixing mechanism is provided between the connecting plate and the fixing seat, a piston chamber is opened in the fixing seat, a piston mechanism is provided in the piston chamber, and a sealing mechanism is provided between the corrosion-resistant sleeve and the piston chamber.

[0007] A further feature of this application is that the fixing mechanism includes a threaded groove, a bolt, and a threaded hole. The fixing seat has a threaded groove on the side near the connecting plate. The threaded groove is located outside the piston cavity. The connecting plate has a threaded hole. Bolts are installed in the threaded groove and the threaded hole.

[0008] By adopting the above technical solution and by setting a fixing mechanism, the bolts can be screwed into the screw holes of the connecting plate and the threaded grooves of the fixing seat, so as to achieve the purpose of fastening the two corresponding fixing seats through the connecting plate.

[0009] A further configuration of this application is: the piston mechanism includes a piston plate and a slide rod, the piston plate is slidably installed on the inner wall of the piston cavity, the slide rod is fixedly installed on the side of the piston plate near the threaded groove, and the other end of the slide rod extends into the threaded groove.

[0010] By adopting the above technical solution and by setting up a piston mechanism, the slide rod can drive the piston plate to slide in the piston chamber, thereby achieving the purpose of compressing the air in the piston chamber into the inflation tube through the piston plate.

[0011] A further feature of this application is that a top plate is fixedly installed at the other end of the slide rod, and the bolts are adapted to the top plate.

[0012] By adopting the above technical solution, and by setting a top plate, the end of the bolt can push the top plate when it is tightened, thereby driving the slide rod to move.

[0013] A further feature of this application is that the sealing mechanism includes a sealing airbag and an inflation tube, the inner wall of the corrosion-resistant sleeve is provided with a sealing airbag, the sealing airbag and the piston chamber are provided with the same inflation tube, and the sealing airbag and the tube body are adapted to each other.

[0014] By adopting the above technical solution and by setting a sealing mechanism, the air in the piston chamber can be compressed into the sealing airbag through the inflation tube, so that the sealing airbag can fit tightly against the tube body, effectively preventing external corrosive media from entering through the gap between the corrosion-resistant sleeve and the tube body.

[0015] A further feature of this application is that a vent hole is provided on one side of the inner wall of the piston chamber, and the vent hole is located on the outside of the piston plate.

[0016] By adopting the above technical solution and by setting up vent holes, the air pressure inside and outside the piston chamber can be balanced through the air holes, thus ensuring that the piston plate slides normally.

[0017] A further feature of this application is that the same spring is fixedly installed on the inner wall of the piston plate on the side away from the threaded groove and on the inner wall of the piston cavity on the side near the threaded groove, and the spring is located outside the inflation tube.

[0018] By adopting the above technical solution and incorporating a spring, the spring can drive the piston plate to reset through its rebound force.

[0019] A further feature of this application is that an anti-corrosion film is provided on the inner wall of the pipe, and the anti-corrosion film is bonded to the inner wall of the pipe.

[0020] By adopting the above technical solution and by setting up an anti-corrosion membrane, the anti-corrosion membrane can effectively resist the corrosion of the inner wall of the pipe by the internal transport medium.

[0021] The beneficial effects of this application are:

[0022] (1) By using the bolt, screw hole and thread groove, by screwing the bolt into the screw hole of the connecting plate and the thread groove of the fixing seat, the two corresponding fixing seats can be fastened together by the connecting plate, and the corrosion-resistant sleeve can be installed on the outside of the pipe body.

[0023] (2) Through the cooperation of the top plate, sliding rod, piston plate, inflation tube and sealing airbag, the bolts are continuously tightened to contact the top plate and push the top plate, which can drive the sliding rod and piston plate to slide in the piston chamber. The piston plate can compress the air in the piston chamber into the sealing airbag through the inflation tube. The expanded sealing airbag can fit tightly against the pipe body, which can effectively prevent external corrosive media from entering from the gap between the corrosion-resistant sleeve and the pipe body, and greatly reduce the risk of the pipe body being corroded. Attached Figure Description

[0024] To more clearly illustrate the technical solutions in the embodiments of this application, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0025] Figure 1 This is a three-dimensional structural diagram of a corrosion-resistant stainless steel pipe according to this application;

[0026] Figure 2 This is an exploded view of a corrosion-resistant stainless steel pipe according to this application;

[0027] Figure 3 This is a partial cross-sectional structural diagram of a corrosion-resistant stainless steel pipe according to this application;

[0028] Figure 4 This is a schematic diagram of structure A of a corrosion-resistant stainless steel pipe according to this application.

[0029] In the diagram: 1. Pipe body; 2. Corrosion-resistant sleeve; 3. Fixing seat; 4. Connecting plate; 5. Piston chamber; 6. Spring; 7. Vent hole; 101. Anti-corrosion film; 201. Sealing airbag; 202. Inflation pipe; 301. Threaded groove; 302. Bolt; 401. Screw hole; 501. Piston plate; 502. Sliding rod; 503. Top plate. Detailed Implementation

[0030] The technical solution of this application will be clearly and completely described below with reference to specific embodiments. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of them. All other embodiments obtained by those skilled in the art based on the embodiments of this application without creative effort are within the scope of protection of this application.

[0031] See Figures 1-4 This application provides a corrosion-resistant stainless steel pipe, including a pipe body 1. Two corrosion-resistant sleeves 2 are provided on the outside of the pipe body 1. Fixing seats 3 are fixedly installed on the top and bottom of the corrosion-resistant sleeves 2. A connecting plate 4 is provided on the outside of the fixing seat 3. A fixing mechanism is provided between the connecting plate 4 and the fixing seat 3. A piston chamber 5 is opened in the fixing seat 3. A piston mechanism is provided in the piston chamber 5. A sealing mechanism is provided between the corrosion-resistant sleeves 2 and the piston chamber 5.

[0032] Specifically, the fixing mechanism includes a threaded groove 301, a bolt 302 and a screw hole 401. The fixing seat 3 has a threaded groove 301 on the side near the connecting plate 4. The threaded groove 301 is located outside the piston chamber 5. The connecting plate 4 has a screw hole 401. The bolt 302 is installed in the threaded groove 301 and the screw hole 401.

[0033] Specifically, the piston mechanism includes a piston plate 501 and a slide rod 502. The piston plate 501 is slidably installed on the inner wall of the piston cavity 5. The slide rod 502 is fixedly installed on the side of the piston plate 501 near the threaded groove 301. The other end of the slide rod 502 extends into the threaded groove 301.

[0034] Specifically, a top plate 503 is fixedly installed at the other end of the slide bar 502, and bolts 302 are compatible with the top plate 503.

[0035] Specifically, the sealing mechanism includes a sealing airbag 201 and an inflation tube 202. The inner wall of the corrosion-resistant sleeve 2 is provided with a sealing airbag 201. The same inflation tube 202 is provided between the sealing airbag 201 and the piston chamber 5. The sealing airbag 201 is adapted to the tube body 1.

[0036] Specifically, a vent hole 7 is provided on one side of the inner wall of the piston chamber 5, and the vent hole 7 is located on the outside of the piston plate 501.

[0037] Specifically, the same spring 6 is fixedly installed on the inner wall of the piston plate 501 on the side away from the threaded groove 301 and the piston cavity 5 on the side near the threaded groove 301. The spring 6 is located outside the inflation tube 202.

[0038] Specifically, the inner wall of the pipe body 1 is provided with an anti-corrosion film 101, which is bonded to the inner wall of the pipe body 1.

[0039] In this application, during installation, two corrosion-resistant sleeves 2 are first fitted onto the outside of the pipe body 1. Then, a fixing mechanism is used to connect the connecting plate 4 and the corresponding two fixing seats 3. During this process, bolts 302 are screwed into the screw holes 401 of the connecting plate 4 and the threaded grooves 301 of the fixing seats 3. This allows the two corresponding fixing seats 3 to be securely connected via the connecting plate 4, achieving the purpose of installing the corrosion-resistant sleeves 2 on the outside of the pipe body 1. As the bolts 302 are continuously tightened, their ends contact the top plate 503 and push the top plate 503, thereby causing the sliding rod 502 and piston plate 501 to slide within the piston chamber 5. The sliding of the piston plate 501 compresses the air within the piston chamber 5. Since the vent 7 is located outside the piston plate 501, it balances the air pressure inside and outside the piston chamber 5, ensuring the normal sliding of the piston plate 501. The compressed air can enter the sealing airbag 201 through the inflation pipe 202. The sealing airbag 201 can expand; the expanded sealing airbag 201 can tightly fit the pipe body 1, forming a reliable sealing barrier, which can effectively prevent external corrosive media from entering through the gap between the corrosion-resistant sleeve 2 and the pipe body 1, greatly reducing the risk of corrosion of the pipe body 1; when it is necessary to disassemble the corrosion-resistant sleeve 2, simply loosen the bolt 302, at which time the spring 6 plays a role. Under the elastic force of the spring 6, the piston plate 501 returns to its original position, and the air in the sealing airbag 201 flows back to the piston chamber 5 through the inflation tube 202, and the sealing airbag 201 contracts, making it easy to remove the corrosion-resistant sleeve 2 from the pipe body 1; in addition, the anti-corrosion film 101 set on the inner wall of the pipe body 1 is tightly bonded to the inner wall of the pipe body 1, further providing protection for the pipe body 1, which can effectively resist the corrosion of the inner wall of the pipe body 1 by the internal transported media, improving the corrosion resistance of the entire stainless steel pipe from both internal and external aspects, and extending its service life.

Claims

1. A corrosion-resistant stainless steel pipe, characterized in that, The tube includes a pipe body (1), and two corrosion-resistant sleeves (2) are provided on the outside of the pipe body (1). The top and bottom of the corrosion-resistant sleeves (2) are fixedly installed with fixing seats (3). A connecting plate (4) is provided on the outside of the fixing seats (3). A fixing mechanism is provided between the connecting plate (4) and the fixing seats (3). A piston cavity (5) is opened in the fixing seat (3). A piston mechanism is provided in the piston cavity (5). A sealing mechanism is provided between the corrosion-resistant sleeves (2) and the piston cavity (5).

2. The corrosion-resistant stainless steel pipe according to claim 1, characterized in that: The fixing mechanism includes a threaded groove (301), a bolt (302) and a screw hole (401). The fixing seat (3) has a threaded groove (301) on the side near the connecting plate (4). The threaded groove (301) is located outside the piston chamber (5). The connecting plate (4) has a screw hole (401). The bolt (302) is threaded in the threaded groove (301) and the screw hole (401).

3. The corrosion-resistant stainless steel pipe according to claim 2, characterized in that: The piston mechanism includes a piston plate (501) and a slide rod (502). The piston plate (501) is slidably installed on the inner wall of the piston cavity (5). The slide rod (502) is fixedly installed on the side of the piston plate (501) near the threaded groove (301). The other end of the slide rod (502) extends into the threaded groove (301).

4. The corrosion-resistant stainless steel pipe according to claim 3, characterized in that: The other end of the slide bar (502) is fixedly installed with a top plate (503), and the bolt (302) is adapted to the top plate (503).

5. The corrosion-resistant stainless steel pipe according to claim 1, characterized in that: The sealing mechanism includes a sealing airbag (201) and an inflation tube (202). The inner wall of the corrosion-resistant sleeve (2) is provided with a sealing airbag (201). The sealing airbag (201) and the piston chamber (5) are provided with the same inflation tube (202). The sealing airbag (201) is adapted to the tube body (1).

6. The corrosion-resistant stainless steel pipe according to claim 1, characterized in that: A vent hole (7) is provided on one side of the inner wall of the piston chamber (5), and the vent hole (7) is located on the outside of the piston plate (501).

7. The corrosion-resistant stainless steel pipe according to claim 3, characterized in that: The piston plate (501) on the side away from the threaded groove (301) and the piston cavity (5) on the side near the threaded groove (301) are fixedly installed with the same spring (6), and the spring (6) is located outside the inflation tube (202).

8. The corrosion-resistant stainless steel pipe according to claim 1, characterized in that: The inner wall of the pipe body (1) is provided with an anti-corrosion film (101), and the anti-corrosion film (101) is bonded to the inner wall of the pipe body (1).

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