Precise high-pressure-resistance seamless steel tube
By incorporating a magnetic adsorption design with a connecting sleeve and a fan-shaped fixing block on the outer wall of the seamless steel pipe, combined with inner and outer rings and a sealing strip, the problem of unstable threaded connections in existing technologies is solved, achieving stable connection and leak-proof effect for the steel pipe, and adapting to flexible adjustments on-site.
Patent Information
- Application Number
- CN202421279114.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-06-06
- Publication Date
- 2025-01-10
- Estimated Expiration
- 2034-06-06
AI Technical Summary
In the existing technology, it is difficult to ensure the consistency of thread connection between each steel pipe and the splicing sleeve by opening threaded connection on seamless steel pipe, resulting in unstable connection and difficulty in flexibly adapting to length or direction adjustments on the engineering site.
The design employs a connecting sleeve installed on the outer wall of the steel pipe, with a sector-shaped fixing block and a sector-shaped clamping block fixed on the inner wall. Magnets are used to make them magnetically attracted to each other, and the design of a circular sealing strip and inner and outer rings ensures the stability of the steel pipe connection and prevents leakage.
It achieves a stable connection of seamless steel pipes, avoids detachment due to vibration or shaking, enhances the reliability of the connection and prevents liquid leakage, and adapts to the flexible adjustment needs of the engineering site.
Smart Images
Figure CN222334184U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of seamless steel pipes, in particular to a precision high-pressure-resistant seamless steel pipe. Background Art
[0002] With the continuous development of society and the continuous progress of science, the use of seamless steel pipes is becoming more and more extensive. Seamless steel pipes are made by perforating a whole round steel and have no welds on the surface. They are called seamless steel pipes.
[0003] In practical applications, due to restrictions on the project site or changes in design requirements, it is necessary to adjust the length or direction of the pipeline according to the specific situation. By docking precision high-pressure seamless steel pipes of different lengths, these changes can be more flexibly adapted to ensure the smooth operation of the project or equipment.
[0004] In the prior art, one end of two steel pipes is inserted into a splicing sleeve, and then threads are provided on the outer wall of the steel pipe and the inner wall of the splicing sleeve, and then the splicing sleeve is rotated to thread the two adjacent steel pipes together. However, this connection method requires that each steel pipe be threaded, and thread processing requires a high degree of precision and consistency. In the actual production process, due to the influence of factors such as equipment precision and operating technology, it is difficult to ensure that the thread of each steel pipe is completely connected with the thread in the splicing sleeve. Utility Model Content
[0005] The purpose of the utility model is to provide a precision high-pressure seamless steel pipe to solve the problems raised in the above background technology.
[0006] In order to solve the above technical problems, the utility model provides a precision high-pressure resistant seamless steel pipe, including a steel pipe, a connecting assembly is arranged on one side of the steel pipe, the connecting assembly includes a connecting sleeve arranged on the outer wall of the steel pipe, two fan-shaped fixing blocks are fixedly installed on the inner wall of the connecting sleeve, and a fan-shaped clamping block is fixedly installed on the outer wall of the steel pipe, and the fan-shaped fixing block is abutted against the outer wall of the fan-shaped clamping block.
[0007] Furthermore, the fan-shaped fixing block and the fan-shaped clamping block are both semicircular as a whole, and the vertical surfaces of the fan-shaped fixing block and the fan-shaped clamping block correspond to each other.
[0008] Furthermore, magnets are fixedly mounted on the outer walls of the sector-shaped fixing block and the sector-shaped clamping block, the two magnets are magnetically attracted to each other, and the magnets are in a semicircular shape as a whole.
[0009] Furthermore, a circular sealing strip is fixedly installed on the inner wall of the connecting sleeve, and the circular sealing strip is located at the butt joint of one end of the two steel pipes, and the inner wall of the circular sealing strip is in close contact with the butt joint of the two steel pipes.
[0010] Furthermore, an outer ring is fixedly installed on one end of one of the steel pipes located inside the connecting sleeve, and an inner ring is fixedly installed on the other end of the steel pipe located inside the connecting sleeve, and the outer wall of the inner ring is slidably connected to the inner wall of the outer ring.
[0011] Furthermore, a corrosion-resistant layer is fixedly connected to the inner wall of the steel pipe, a pressure-resistant layer is fixedly installed on the inner wall of the corrosion-resistant layer, the corrosion-resistant layer is made of 904L stainless steel, and the pressure-resistant layer is made of alloy steel.
[0012] Furthermore, a reinforcing layer is fixedly installed on the inner wall of the pressure-resistant layer, an inner tube is fixedly installed on the inner wall of the reinforcing layer, the reinforcing layer is made of carbon fiber composite material, and the inner tube is made of high-quality carbon steel.
[0013] Compared with the prior art, the beneficial effects of the utility model are:
[0014] 1. In the utility model, one end of two adjacent steel pipes is inserted into the connecting sleeve. When the fan-shaped fixing block and one side of the arc of the fan-shaped clamping block are against each other, the connecting sleeve is pushed hard to make the fan-shaped fixing block pass over the fan-shaped clamping block. When the fan-shaped fixing block passes over the fan-shaped clamping block, the vertical side of the fan-shaped fixing block and the fan-shaped clamping block will correspond to each other, and the steel pipe cannot be pulled out from the connecting sleeve.
[0015] 2. In the utility model, the magnet makes the fan-shaped fixing block and the fan-shaped clamping block magnetically attracted to each other, mainly to prevent the surrounding vibration and shaking from causing the connecting sleeve or the steel pipe to rotate and cause the fan-shaped fixing block and the fan-shaped clamping block to be misaligned, so as to avoid causing the steel pipe to slip out of the connecting sleeve. BRIEF DESCRIPTION OF THE DRAWINGS
[0016] Figure 1 It is a schematic diagram of the overall structure of the utility model;
[0017] Figure 2 This is a schematic diagram of the connection structure between the connecting sleeve and the circular sealing strip in the utility model;
[0018] Figure 3 This is a schematic diagram of the connection structure between the outer ring and the inner ring in the utility model;
[0019] Figure 4 It is a schematic diagram of the cross-sectional structure of the utility model;
[0020] Figure 5 for Figure 2 A magnified view of the structure at center.
[0021] In the figure: 1. Steel pipe;
[0022] 2. Connecting assembly; 201. Connecting sleeve; 202. Fan-shaped fixing block; 203. Fan-shaped clamping block;
[0023] 3. Outer ring; 4. Inner ring; 5. Circular sealing strip; 6. Corrosion-resistant layer; 7. Pressure-resistant layer; 8. Reinforcement layer; 9. Inner tube; 10. Magnet. 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 As shown, a precision high-pressure resistant seamless steel pipe includes a steel pipe 1, and a connecting component 2 is arranged on one side of the steel pipe 1. The connecting component 2 is used to connect two adjacent steel pipes 1 together. The connecting component 2 includes a connecting sleeve 201 arranged on the outer wall of the steel pipe 1, and two fan-shaped fixing blocks 202 are fixedly installed on the inner wall of the connecting sleeve 201. One side of the fan-shaped fixing block 202 is corresponding to the entrance of the connecting sleeve 201. A fan-shaped clamping block 203 is fixedly installed on the outer wall of the steel pipe 1. One side of the fan-shaped clamping block 203 is corresponding to one end of the steel pipe 1, and the fan-shaped fixing block 202 is against the outer wall of the fan-shaped clamping block 203.
[0027] Insert one end of two adjacent steel pipes 1 into the connecting sleeve 201. When the fan-shaped fixing block 202 and one side of the arc of the fan-shaped clamping block 203 are against each other, push the connecting sleeve 201 with force to make the fan-shaped fixing block 202 pass over the fan-shaped clamping block 203. When the fan-shaped fixing block 202 passes over the fan-shaped clamping block 203, the vertical sides of the fan-shaped fixing block 202 and the fan-shaped clamping block 203 will correspond to each other. At this time, the steel pipe 1 cannot be pulled out from the connecting sleeve 201. If you want to take it out, you only need to rotate the connecting sleeve 201 or the steel pipe 1 to stagger the fan-shaped fixing block 202 and the fan-shaped clamping block 203.
[0028] See also Figure 5 The fan-shaped fixing block 202 and the fan-shaped clamping block 203 are both semicircular as a whole, and the vertical surfaces of the fan-shaped fixing block 202 and the fan-shaped clamping block 203 correspond to each other.
[0029] The fan-shaped fixing block 202 and the fan-shaped clamping block 203 are both semicircular as a whole, so that when the steel pipe 1 needs to be taken out, the steel pipe 1 can be taken out of the connecting sleeve 201 by rotating the connecting sleeve 201 or the steel pipe 1 to make the fan-shaped fixing block 202 and the fan-shaped clamping block 203 staggered. The vertical surfaces of the fan-shaped fixing block 202 and the fan-shaped clamping block 203 correspond to each other to prevent the steel pipe 1 from being easily pulled out of the connecting sleeve 201.
[0030] See also Figure 5 The outer walls of the sector-shaped fixed block 202 and the sector-shaped clamping block 203 are both fixedly mounted with magnets 10, the two magnets 10 are magnetically attracted to each other, and the magnets 10 are semicircular as a whole.
[0031] The magnet 10 causes the fan-shaped fixing block 202 and the fan-shaped clamping block 203 to be magnetically attracted to each other, mainly to prevent the surrounding vibration and shaking from causing the connecting sleeve 201 or the steel pipe 1 to rotate and cause the fan-shaped fixing block 202 and the fan-shaped clamping block 203 to be offset, so as to prevent the steel pipe 1 from slipping out of the connecting sleeve 201.
[0032] See also Figure 2-Figure 5 A circular sealing strip 5 is fixedly installed on the inner wall of the connecting sleeve 201 . The circular sealing strip 5 is located at the butt joint of one end of the two steel pipes 1 . The inner wall of the circular sealing strip 5 is in close contact with the butt joint of the two steel pipes 1 .
[0033] The circular sealing strip 5 makes the connection between the two steel pipes 1 tighter, so that the objects being transported in the steel pipes 1 will not leak out easily.
[0034] See also Figure 2-Figure 3 One end of one steel pipe 1 located inside the connecting sleeve 201 is fixedly installed with an outer ring 3, and the other end of the other steel pipe 1 located inside the connecting sleeve 201 is fixedly installed with an inner ring 4, and the outer wall of the inner ring 4 is slidably connected to the inner wall of the outer ring 3.
[0035] If one end of the two steel pipes 1 is directly butted against each other, there will still be a gap between the contacting parts of the two steel pipes 1, and leakage may still occur. When the two steel pipes 1 are butted against each other, the inner ring 4 at one end of one of the steel pipes 1 will be inserted into the outer ring 3 at one end of the other steel pipe 1. The connection between the outer ring 3 and the inner ring 4 can effectively prevent leakage of the liquid in the steel pipe 1.
[0036] See also Figure 4 The inner wall of the steel pipe 1 is fixedly connected with a corrosion-resistant layer 6, and the inner wall of the corrosion-resistant layer 6 is fixedly installed with a pressure-resistant layer 7. The corrosion-resistant layer 6 is made of 904L stainless steel, and the pressure-resistant layer 7 is made of alloy steel.
[0037] The corrosion-resistant layer 6 made of 904L stainless steel performs well in many corrosive media, can withstand the erosion of strong acids and alkalis such as sulfuric acid, hydrochloric acid, and chloride, and can effectively resist the occurrence of stress corrosion cracking, increase the stability and safety of the steel pipe 1 under high-pressure environments, and provide long-term and stable protection for the steel pipe 1. The pressure-resistant layer 7 made of alloy steel has excellent wear resistance and high temperature resistance, which can ensure the stability and durability of the steel pipe 1 under long-term high-pressure operation and high-temperature environments.
[0038] See also Figure 4A reinforcing layer 8 is fixedly installed on the inner wall of the pressure-resistant layer 7, and an inner tube 9 is fixedly installed on the inner wall of the reinforcing layer 8. The reinforcing layer 8 is made of carbon fiber composite material, and the inner tube 9 is made of high-quality carbon steel.
[0039] The reinforcing layer 8 of the carbon fiber composite material has good resistance to various corrosive media and excellent fatigue resistance, which can extend the service life of the steel pipe 1. The inner pipe 9 is made of high-quality carbon steel with high strength and toughness, which can ensure that the steel pipe 1 works stably under high-pressure environment and resists erosion by internal media.
[0040] Working principle:
[0041] Insert one end of two adjacent steel pipes 1 into the connecting sleeve 201. When the fan-shaped fixing block 202 and one side of the arc of the fan-shaped clamping block 203 are against each other, push the connecting sleeve 201 with force to make the fan-shaped fixing block 202 pass over the fan-shaped clamping block 203. When the fan-shaped fixing block 202 passes over the fan-shaped clamping block 203, the vertical sides of the fan-shaped fixing block 202 and the fan-shaped clamping block 203 will correspond to each other. At this time, the steel pipe 1 cannot be pulled out from the connecting sleeve 201. If you want to take it out, you only need to rotate the connecting sleeve 201 or the steel pipe 1 to stagger the fan-shaped fixing block 202 and the fan-shaped clamping block 203.
[0042] The magnet 10 causes the fan-shaped fixing block 202 and the fan-shaped clamping block 203 to be magnetically attracted to each other, mainly to prevent the surrounding vibration and shaking from causing the connecting sleeve 201 or the steel pipe 1 to rotate and cause the fan-shaped fixing block 202 and the fan-shaped clamping block 203 to be offset, so as to prevent the steel pipe 1 from slipping out of the connecting sleeve 201.
Claims
1. A precision high-pressure seamless steel pipe, comprising a steel pipe (1), characterized in that: A connecting assembly (2) is provided on one side of the steel pipe (1), the connecting assembly (2) comprising a connecting sleeve (201) provided on the outer wall of the steel pipe (1), two fan-shaped fixing blocks (202) being fixedly mounted on the inner wall of the connecting sleeve (201), a fan-shaped clamping block (203) being fixedly mounted on the outer wall of the steel pipe (1), the fan-shaped fixing block (202) being abutted against the outer wall of the fan-shaped clamping block (203).
2. A precision high pressure resistance seamless steel pipe as claimed in claim 1, characterized in that: The fan-shaped fixing block (202) and the fan-shaped clamping block (203) are both semicircular in shape as a whole, and the vertical surfaces of the fan-shaped fixing block (202) and the fan-shaped clamping block (203) correspond to each other.
3. A precision high pressure resistance seamless steel pipe as claimed in claim 2, characterized in that: The outer walls of the sector-shaped fixing block (202) and the sector-shaped clamping block (203) are both fixedly mounted with magnets (10), the two magnets (10) are magnetically attracted to each other, and the magnets (10) are in the shape of a semicircle as a whole.
4. A precision high pressure resistance seamless steel pipe as claimed in claim 3, characterized in that: A circular sealing strip (5) is fixedly mounted on the inner wall of the connecting sleeve (201), and the circular sealing strip (5) is located at the joint between one end of the two steel pipes (1), and the inner wall of the circular sealing strip (5) is in close contact with the joint between the two steel pipes (1).
5. A precision high pressure resistance seamless steel pipe as claimed in claim 4, characterized in that: An outer ring (3) is fixedly mounted on one end of one of the steel pipes (1) located inside the connecting sleeve (201), and an inner ring (4) is fixedly mounted on the other end of the steel pipe (1) located inside the connecting sleeve (201), and the outer wall of the inner ring (4) is slidably connected to the inner wall of the outer ring (3).
6. The precision high pressure resistance seamless steel pipe according to claim 1, characterized in that: The inner wall of the steel pipe (1) is fixedly connected with a corrosion-resistant layer (6), and the inner wall of the corrosion-resistant layer (6) is fixedly installed with a pressure-resistant layer (7), the corrosion-resistant layer (6) is made of 904L stainless steel, and the pressure-resistant layer (7) is made of alloy steel.
7. A precision high pressure resistance seamless steel pipe as claimed in claim 6, characterized in that: A reinforcing layer (8) is fixedly mounted on the inner wall of the pressure-resistant layer (7), and an inner tube (9) is fixedly mounted on the inner wall of the reinforcing layer (8). The reinforcing layer (8) is made of a carbon fiber composite material, and the inner tube (9) is made of high-quality carbon steel.