Acid-resistant high-strength stainless steel seamless steel tube

Abstract

The utility model discloses an acid-resistant high-strength stainless steel seamless steel pipe, which relates to the technical field of steel pipes, and comprises an inner pipe, the outer wall of the inner pipe is provided with a protection assembly, and the protection assembly comprises a mounting sleeve; the outer wall of the mounting sleeve is provided with threads, the outer wall of the mounting sleeve is rotatably provided with a supporting rod, the other end of the supporting rod is rotatably connected with a supporting plate, one side of the supporting plate is provided with a connecting block, and after the outer pipe is damaged, a worker rotates the mounting sleeve to enable the mounting sleeve to be far away from the lantern ring. The lantern ring is clamped on the inner pipe, the position is fixed, and the movement of the mounting sleeve does not affect the position. The limiting block prevents components in the mounting frame from moving out, and the position of the supporting plate is fixed. Along with movement of the mounting sleeve, the supporting rod inclines and pulls down the supporting plate and the connecting block, so that the supporting plate is separated from the inner wall of the outer pipe. Therefore, the damaged outer pipe can be quickly replaced, the replacement efficiency is improved, and subsequent protection of the inner pipe is guaranteed.

Description

Technical Field

[0001] The utility model relates to the technical field of steel pipes, in particular to an acid-resistant high-strength stainless steel seamless pipe. Background Art

[0002] Stainless steel seamless pipe is a long steel strip with a hollow cross-section and no seams around it. It is made of stainless steel and produced through cold drawing or hot rolling. Stainless steel seamless pipes are widely used in many fields, including but not limited to industrial pipelines such as petroleum, chemical, medical, food, light industry, mechanical instruments, and mechanical structural components.

[0003] In the prior art, the structure of a steel pipe generally includes an inner pipe, a reinforcing rib plate, and an outer pipe that are fixedly installed in sequence. This integrated design performs well in terms of structural stability. However, when the steel pipe is impacted, the outer pipe tends to be the most vulnerable part, which may deform or even be damaged. Once the outer pipe is deformed, it will face certain difficulties when it needs to be replaced. Since the inner pipe and the reinforcing rib plate are fixedly installed with the outer pipe, such a structure makes it quite inconvenient to disassemble and replace the outer pipe, which increases the complexity of maintenance and prolongs the maintenance time. Utility Model Content

[0004] The utility model aims to provide an acid-resistant high-strength stainless steel seamless pipe to solve the problems raised in the above-mentioned background technology.

[0005] In order to solve the above technical problems, the utility model provides an acid-resistant high-strength stainless steel seamless pipe, including an inner pipe, the outer wall of the inner pipe is installed with a protective component, the protective component includes a mounting sleeve; the outer wall of the mounting sleeve is provided with a thread, the outer wall of the mounting sleeve is rotatably provided with a support rod, the other end of the support rod is rotatably connected to a support plate, a connecting block is installed on one side of the support plate, a limiting block is installed on the side of the connecting block away from the support plate, the outer wall of the inner pipe is provided with a ring, and a plurality of mounting frames are installed on the circumferential outer wall of the ring.

[0006] Furthermore, a second mounting block is mounted on the circumferential outer wall of the mounting sleeve, and the support rod is rotatably connected to the outer wall of the mounting sleeve via the second mounting block.

[0007] Furthermore, a first mounting block is installed at the bottom of the support plate, and one end of the protective component away from the mounting sleeve is rotatably connected to one side of the support plate through the first mounting block.

[0008] Furthermore, a rubber layer is integrally formed on one side of the support plate.

[0009] Furthermore, the inner wall of the inner tube is provided with polyethylene, and the outer wall of the mounting sleeve is provided with zinc coating.

[0010] Furthermore, the connection block is slidably connected to the interior of the installation frame, and the limit block is arranged on one side of the installation frame.

[0011] Furthermore, an outer tube is provided on one side of the support plate, and an outer tube is provided on one side of the support plate, and sand material and a phosphating film are provided on the circumferential outer wall of the outer tube in sequence.

[0012] Furthermore, the outer tube is made of steel.

[0013] Compared with the prior art, the beneficial effects of the utility model are:

[0014] 1. In the utility model, when the outer tube is damaged, the staff rotates the installation sleeve to move it away from the collar. The collar is stuck on the inner tube and its position is fixed, and the movement of the installation sleeve does not affect its position. The limit block prevents the components in the installation frame from moving out, and the support plate is fixed in position. As the installation sleeve moves, the support rod tilts and pulls down the support plate and the connecting block, so that the support plate is separated from the inner wall of the outer tube. In this way, the damaged outer tube can be quickly replaced, the replacement efficiency is improved, and the subsequent protection of the inner tube is guaranteed.

[0015] 2. In the present invention, the outer tube, sand material and phosphating film together form a protective tube to enhance the protective effect of the inner tube. Sandblasting increases the surface roughness of the outer tube, improves the adhesion and anti-corrosion ability of the coating, and at the same time strengthens the connection firmness with other materials and improves the overall structural strength. Acid pickling and phosphating and other treatment technologies form a phosphating film on the surface of the outer tube, further improving the adhesion and anti-corrosion effect, optimizing physical properties, and enhancing overall strength. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the internal structure of the utility model;

[0017] Figure 2 It is a schematic diagram of the overall structure of the utility model;

[0018] Figure 3 It is a schematic diagram of the structure of the protection component in the utility model;

[0019] Figure 4 It is a schematic diagram of the connection structure between the inner tube and the installation sleeve in the utility model;

[0020] Figure 5 for Figure 3 A magnified view of the structure at center.

[0021] In the figure: 1. inner tube;

[0022] 2. Protective assembly; 201. Mounting sleeve; 202. Support rod; 203. Support plate; 204. Connecting block; 205. Limiting block; 206. Mounting frame; 207. Ring; 208. Outer tube;

[0023] 3. First mounting block; 4. Sand; 5. Phosphate film; 6. Second mounting block; 7. Polyethylene; 8. Rubber layer. DETAILED DESCRIPTION

[0024] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0025] See also Figure 1 - Figure 5 , the utility model provides a technical solution:

[0026] See also Figure 1 - Figure 5 The invention discloses an acid-resistant high-strength seamless stainless steel pipe, comprising an inner pipe 1, a protective component 2 being installed on the outer wall of the inner pipe 1, the protective component 2 comprising a mounting sleeve 201; a thread being provided on the outer wall of the mounting sleeve 201, a support rod 202 being rotatably provided on the outer wall of the mounting sleeve 201, a support plate 203 being rotatably connected to the other end of the support rod 202, a connecting block 204 being fixedly installed on one side of the support plate 203, a limiting block 205 being fixedly installed on the side of the connecting block 204 away from the support plate 203, a collar 207 being provided on the outer wall of the inner pipe 1, a plurality of mounting frames 206 being fixedly installed on the circumferential outer wall of the collar 207.

[0027] When the outer tube 208 is damaged by the impact of external force, the staff rotates the installation sleeve 201, and the installation sleeve 201 moves away from the collar 207. The collar 207 is clamped on the outer wall of the inner tube 1. The collar 207 can be moved, but it will not be moved away from the original position by the movement of the installation sleeve 201. The cross-sectional area of ​​the limit block 205 is larger than the opening on the installation frame 206. The limit block 205 plays a role of limiting. The support plate 203 is restrained by the connecting block 204 and the limit block 205. The position of the support plate 203 remains unchanged, but the installation sleeve 201 moves away from the collar 20 7, so the bottom end of the support rod 202 is pulled by the mounting sleeve 201, and the support rod 202 is tilted toward the direction of the collar 207. The tilt of the support rod 202 will pull the support plate 203 and the connecting block 204 downward, and the support plate 203 will be separated from and away from the inner wall of the outer tube 208. At this time, the outer tube 208 on one side of the support plate 203 can be removed and replaced with another outer tube 208. The protective component 2 can be quickly replaced after the outer tube 208 is impacted, thereby increasing the rate of replacing the outer tube 208 for subsequent protection of the inner tube 1.

[0028] At the same time, the protective component 2, as a structural reinforcement, can significantly improve the pressure resistance and structural stability of the inner tube 1. In a high-pressure environment, the reinforcing rib plate can effectively disperse and bear the external pressure, reduce the deformation of the inner tube 1, and thus maintain the shape and function of the inner tube 1 stable.

[0029] Due to the structural design between the protective component 2 and the inner pipe 1, it can act as a barrier to help better resist the erosion of the external environment, especially acidic and corrosive media, thereby enhancing the acid and corrosion resistance of the entire steel pipe.

[0030] The height of the support rod 202 is higher than the installation frame 206. When the support plate 203 is supported by the support rod 202, the outer tube 208 can be well supported. When the support plate 203 is slightly retracted by the support rod 202, the outer tube 208 can be removed.

[0031] See also Figure 1 and Figure 3 A second mounting block 6 is fixedly mounted on the circumferential outer wall of the mounting sleeve 201 , and the support rod 202 is rotatably connected to the outer wall of the mounting sleeve 201 through the second mounting block 6 .

[0032] The second mounting block 6 provides a connecting component for the support rod 202. The second mounting block 6 serves as a connecting component between the support rod 202 and the mounting sleeve 201. Its fixed installation ensures the stability and reliability of the structure. This design avoids the looseness or instability that may be caused by the direct connection of the support rod 202 to the mounting sleeve 201, and improves the bearing capacity and safety of the entire support structure.

[0033] See also Figure 1 and Figure 4 A first mounting block 3 is fixedly mounted on the bottom of the support plate 203 , and one end of the protection component 2 away from the mounting sleeve 201 is rotatably connected to one side of the support plate 203 through the first mounting block 3 .

[0034] The first mounting block 3 provides a connecting component for the support rod 202 on the support plate 203 , and when the support rod 202 is tilted and rotated, it can drive the support plate 203 to move up and down, so as to better fix the outer tube 208 on the outside of the protective component 2 .

[0035] See also Figure 3 A rubber layer 8 is integrally formed on one side of the support plate 203 .

[0036] The multiple support plates 203 can expand outward to support the inner wall of the outer tube 208. The rubber layer 8 can increase the friction when in contact with the inner wall of the outer tube 208, thereby preventing the outer tube 208 from slipping against the support plates 203 when the outer tube 208 is impacted by external force, thereby reducing the impact resistance of the outer tube 208.

[0037] See also Figure 3 The inner wall of the inner tube 1 is provided with polyethylene 7, and the outer wall of the mounting sleeve 201 is provided with zinc coating.

[0038] Polyethylene 7 is a commonly used lining anti-corrosion material. It has excellent acid and alkali resistance and can effectively isolate the direct contact between the acidic medium and the inner tube 1, preventing the inner wall of the inner tube 1 from being corroded. In addition, these materials also have good wear resistance and adhesion, which can ensure that the coating remains intact and stable during long-term use. Zinc is an excellent anti-corrosion material that can effectively prevent the installation sleeve 201 from being corroded by the external environment, such as moisture, oxidation and chemical corrosion. By coating the outer wall with zinc paint, a protective barrier can be formed to isolate the installation sleeve 201 from potential corrosion sources, thereby significantly extending the service life of the installation sleeve 201.

[0039] See also Figure 1 The connecting block 204 is slidably connected to the inside of the installation frame 206 , and the limiting block 205 is arranged on one side of the installation frame 206 .

[0040] The cross-sectional area of ​​the limit block 205 is larger than the opening of the installation frame 206, which can prevent the connection block 204 from being separated from the installation frame 206. The support plate 203 is restrained by the connection block 204 and the limit block 205.

[0041] See also Figure 1 An outer tube 208 is provided on one side of the support plate 203, and an outer tube 208 is provided on one side of the support plate 203. The circumferential outer wall of the outer tube 208 is provided with sand material 4 and a phosphate film 5 in sequence.

[0042] The outer tube 208, the sand material 4, and the phosphate film 5 together constitute a protective tube, which can further protect the inner tube 1. Sandblasting can increase the surface roughness of the outer tube 208, thereby improving the adhesion of the coating. This can not only enhance the anti-corrosion ability of the surface of the outer tube 208, but also the rough surface helps the connection between the outer tube 208 and other materials to be more firmly connected, thereby indirectly improving the strength of the overall structure. Through chemical treatment techniques such as pickling and phosphating, a dense phosphate film 5 can be formed on the surface of the outer tube 208 to enhance the adhesion and anti-corrosion effect of the surface of the outer tube 208. The formation of the phosphate film 5 can improve the physical properties of the surface of the outer tube 208, thereby improving its overall strength.

[0043] See also Figure 1 , the material of the outer tube 208 is steel.

[0044] Steel is a high-strength material that can withstand greater pressure and impact. This allows the steel outer tube 208 to effectively resist deformation or rupture when facing external impact or pressure, protecting the safety of the inner tube 1. Whether it is physical impact or external force extrusion, the steel outer tube 208 can provide excellent protection.

[0045] Working principle: When the outer tube 208 is damaged by the impact of external force, the staff rotates the installation sleeve 201, and the installation sleeve 201 moves away from the collar 207, and the collar 207 is clamped on the outer wall of the inner tube 1. The collar 207 can be moved, but it will not be moved away from the original position by the movement of the installation sleeve 201. The cross-sectional area of ​​the limit block 205 is larger than the opening on the installation frame 206. The limit block 205 plays a role of limiting. The support plate 203 is restrained by the connecting block 204 and the limit block 205. The position of the support plate 203 remains unchanged, but the installation sleeve 201 moves away from the sleeve The outer tube 208 is moved in the direction of the ring 207, so that the bottom end of the support rod 202 is pulled by the mounting sleeve 201, and the support rod 202 is tilted in the direction of the ring 207. The tilt of the support rod 202 will pull the support plate 203 and the connecting block 204 to move downward, and the support plate 203 is separated from and away from the inner wall of the outer tube 208. At this time, the outer tube 208 on one side of the support plate 203 can be removed and replaced with another outer tube 208. The protective component 2 can be quickly replaced after the outer tube 208 is impacted, thereby increasing the rate of replacing the outer tube 208 for subsequent protection of the inner tube 1.

[0046] At the same time, the protective component 2, as a structural reinforcement, can significantly improve the pressure resistance and structural stability of the inner tube 1. In a high-pressure environment, the reinforcing rib plate can effectively disperse and bear the external pressure, reduce the deformation of the inner tube 1, and thus maintain the shape and function of the inner tube 1 stable.

[0047] Due to the structural design between the protective component 2 and the inner pipe 1, it can act as a barrier to help better resist the erosion of the external environment, especially acidic and corrosive media, thereby enhancing the acid and corrosion resistance of the entire steel pipe.

[0048] The height of the support rod 202 is higher than the installation frame 206. When the support plate 203 is supported by the support rod 202, the outer tube 208 can be well supported. When the support plate 203 is slightly retracted by the support rod 202, the outer tube 208 can be removed.

[0049] The outer tube 208, the sand material 4, and the phosphate film 5 together constitute a protective tube, which can further protect the inner tube 1. Sandblasting can increase the surface roughness of the outer tube 208, thereby improving the adhesion of the coating. This can not only enhance the anti-corrosion ability of the surface of the outer tube 208, but also the rough surface helps the connection between the outer tube 208 and other materials to be more firmly connected, thereby indirectly improving the strength of the overall structure. Through chemical treatment techniques such as pickling and phosphating, a dense phosphate film 5 can be formed on the surface of the outer tube 208 to enhance the adhesion and anti-corrosion effect of the surface of the outer tube 208. The formation of the phosphate film 5 can improve the physical properties of the surface of the outer tube 208, thereby improving its overall strength.

Claims

1. An acid-resistant high-strength stainless steel seamless pipe, comprising an inner pipe (1), characterized in that: The outer wall of the inner tube (1) is installed with a protection component (2), and the protection component (2) comprises a mounting sleeve (201); the outer wall of the mounting sleeve (201) is provided with a thread; the outer wall of the mounting sleeve (201) is rotatably provided with a support rod (202); the other end of the support rod (202) is rotatably connected to a support plate (203); a connecting block (204) is installed on one side of the support plate (203); a limiting block (205) is installed on the side of the connecting block (204) away from the support plate (203); a collar (207) is provided on the outer wall of the inner tube (1); and a plurality of mounting frames (206) are installed on the circumferential outer wall of the collar (207).

2. The acid-resistant high-strength stainless steel seamless pipe according to claim 1, characterized in that: A second mounting block (6) is mounted on the circumferential outer wall of the mounting sleeve (201), and the support rod (202) is rotatably connected to the outer wall of the mounting sleeve (201) via the second mounting block (6).

3. The acid-resistant high-strength stainless steel seamless pipe according to claim 2, characterized in that: A first mounting block (3) is installed at the bottom of the support plate (203), and one end of the protection component (2) away from the mounting sleeve (201) is rotatably connected to one side of the support plate (203) via the first mounting block (3).

4. The acid-resistant high-strength stainless steel seamless pipe according to claim 3, characterized in that: A rubber layer (8) is integrally formed on one side of the support plate (203).

5. The acid-resistant high-strength stainless steel seamless pipe according to claim 4, characterized in that: The inner wall of the inner tube (1) is provided with polyethylene (7), and the outer wall of the mounting sleeve (201) is provided with zinc coating.

6. The acid-resistant high-strength stainless steel seamless pipe according to claim 5, characterized in that: The connection block (204) is slidably connected to the interior of the installation frame (206), and the limit block (205) is arranged on one side of the installation frame (206).

7. The acid-resistant high-strength stainless steel seamless pipe according to claim 6, characterized in that: An outer tube (208) is provided on one side of the support plate (203), and an outer tube (208) is provided on one side of the support plate (203). Sand material (4) and a phosphating film (5) are sequentially provided on the circumferential outer wall of the outer tube (208).

8. The acid-resistant high-strength stainless steel seamless pipe according to claim 7, characterized in that: The material of the outer tube (208) is steel.

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