Reinforced seamless stainless steel pipe

Abstract

The utility model relates to the field of stainless steel pipes, in particular to a reinforced seamless stainless steel pipe which comprises a stainless steel pipe body used for pipeline supporting or butt joint conveying work, a butt joint groove is formed in one end of the stainless steel pipe body and used for being in preliminary butt joint with other stainless steel pipes, and a threaded pipe is movably connected into the butt joint groove. The stainless steel pipe is provided with the butt-joint groove, the threaded pipe, the butt-joint steel pipe, the outer sealing sleeve, the first flange plate and the fixing bolt, so that the stainless steel pipe can be used when the pipeline conveying length is not enough and butt-joint extension is needed in industrial environments such as petroleum, chemical engineering, medical treatment, food, light industry and mechanical instruments; the butt-joint steel pipe and the stainless steel pipe body can be preliminarily connected through the butt-joint groove and the threaded pipe, then the joint is sleeved with the outer sealing sleeve, the sealing performance of the joint of the butt-joint steel pipe and the stainless steel pipe body is enhanced through the outer sealing sleeve and the inner sealing ring, and the probability of leakage when the butt-joint steel pipe serves as a conveying pipeline is reduced.

Description

Technical Field

[0001] The utility model relates to the field of stainless steel pipes, in particular to a reinforced seamless stainless steel pipe. Background Art

[0002] Stainless steel pipe is a hollow long round steel, which is widely used in industrial pipelines such as petroleum, chemical, medical, food, light industry, mechanical instruments, and mechanical structural components. In addition, when the bending and torsional strength are the same, the weight is lighter, so it is also widely used in the manufacture of mechanical parts and engineering structures. It is also often used as furniture and kitchen utensils. Stainless steel pipes are divided into two categories: seamless steel pipes and welded steel pipes. According to the cross-sectional shape, they can be divided into round tubes and special-shaped tubes. Circular steel pipes are widely used, but there are also some square, rectangular, semicircular, hexagonal, equilateral triangle, octagonal and other special-shaped steel pipes.

[0003] After searching, a reinforced stainless steel pipe with announcement number CN204901104U was found. The stainless steel pipe has a hollow tube body with a hollow groove in the center. The tube body includes a stainless steel base layer. The outer surface of the stainless steel base layer is coated with a wear-resistant layer. The inner surface of the stainless steel base layer is coated with an anti-corrosion coating. The inner surface of the anti-corrosion coating is provided with internal reinforcing ribs.

[0004] However, when the above-mentioned existing stainless steel pipes are used in industrial transportation pipelines or mechanical structural components, according to different usage requirements, if the current pipeline length is not enough, it is necessary to use machines such as welding machines to weld two stainless steel pipes of different lengths to meet the usage requirements of the stainless steel pipe. However, welding and other methods not only require professional personnel to operate, but also delay the laying and use time of the stainless steel pipe. In addition, the stainless steel pipes in the above-mentioned comparative cases do not have the ability to be quickly connected. Therefore, the stainless steel pipes have certain limitations when used in industrial transportation such as petroleum, chemical, medical, food, light industry, mechanical instruments, etc., which narrows the overall scope of use and still needs to be improved. Utility Model Content

[0005] The utility model aims to provide a reinforced seamless stainless steel pipe, which can achieve the purpose of quick connection and extension of the stainless steel pipe when used in different occasions through a butt groove, a threaded pipe, a butt steel pipe, an outer sealing sleeve, a first flange and fixing bolts. Moreover, no matter it is the initial connection of the butt groove or the reinforced connection of the fixing bolts, the overall operation is simple and convenient. The stainless steel pipe is applied to industrial environments such as petroleum, chemical industry, medical treatment, food, light industry, mechanical instruments, etc., without delaying normal use, thereby improving the overall application range of the stainless steel pipe, so as to solve the problem that when the stainless steel pipe in the prior art acts on industrial transportation pipelines or mechanical structural components, according to different use requirements, if the current pipeline length is not enough, it is necessary to weld two stainless steel pipes of different lengths through machines such as welding machines to meet the use requirements of the stainless steel pipe. However, welding and other methods not only require professional personnel to operate, but also delay the laying and use time of the stainless steel pipe. In addition, the stainless steel pipe in the above-mentioned comparative case does not have the ability of quick connection, so the stainless steel pipe has certain limitations when applied to industrial transportation such as petroleum, chemical industry, medical treatment, food, light industry, mechanical instruments, etc., thereby narrowing the problem of the overall use range.

[0006] In order to achieve the above-mentioned purpose, the utility model provides the following technical solutions: a reinforced seamless stainless steel pipe, including a stainless steel pipe body, used for pipeline support or butt-joint transportation;

[0007] The butt joint groove is arranged at one end of the stainless steel pipe body, and is used for preliminary butt joint with other stainless steel pipes, and a threaded pipe is movably connected inside the butt joint groove, and a butt joint steel pipe is fixedly installed at one end of the threaded pipe;

[0008] The outer sealing sleeve is arranged outside the stainless steel pipe body and is used to seal the connection of the stainless steel pipe. An inner groove is provided inside the outer sealing sleeve, and a sealing ring is fixedly installed inside the inner groove.

[0009] The first flange is fixedly installed on the outside of the stainless steel pipe body to reinforce the stability of the stainless steel pipe connection, and a fixing bolt passes through the outside of the first flange, one end of the fixing bolt is movably connected to the second flange, and a hexagonal nut is arranged on the outside of the fixing bolt.

[0010] Preferably, a wear-resistant protective layer is adhered to the outside of the stainless steel tube body, an intermediate layer is fixedly installed inside the stainless steel tube body, and an inner layer is adhered to the inside of the intermediate layer.

[0011] Preferably, the stainless steel tube body and the wear-resistant protective layer are tightly fitted, and the material of the wear-resistant protective layer is tungsten carbide.

[0012] Preferably, a reinforcement strip is fixedly installed on the outside of the inner layer, and a corrosion-resistant protective layer is pasted on the inside of the inner layer.

[0013] Preferably, the corrosion-resistant protective layer is tightly fitted to the inner layer, and the material of the corrosion-resistant protective layer is polyurethane.

[0014] Preferably, the number of the fixing bolts is set to six, and the six fixing bolts are distributed in a ring array on the first flange.

[0015] In the above technical solution, the technical effects and advantages provided by the utility model are:

[0016] The utility model is provided with a butt joint groove, a threaded pipe, a butt joint steel pipe, an outer sealing sleeve, a first flange and fixing bolts. When the stainless steel pipe is used for pipeline transportation in industrial environments such as petroleum, chemical industry, medical treatment, food, light industry, mechanical instrumentation, etc. and the length is not enough and needs to be butted and extended, the butt joint steel pipe and the stainless steel pipe body can be preliminarily connected through the butt joint groove and the threaded pipe, and then the outer sealing sleeve is sleeved at the connection. The outer sealing sleeve and the internal sealing ring strengthen the sealing of the connection between the butt joint steel pipe and the stainless steel pipe body, and reduce the probability of leakage when used as a transportation pipeline. Then, the first flange on the outside of the stainless steel pipe body and the second flange on the outside of the butt joint steel pipe are connected by fixing bolts to strengthen the stability of the connection. In this way, the stainless steel pipe can meet the purpose of quick connection and extension when used in different occasions. Moreover, whether it is the preliminary connection of the butt joint groove or the reinforcement connection of the fixing bolts, the overall operation is simple and convenient. The stainless steel pipe is used in industrial environments such as petroleum, chemical industry, medical treatment, food, light industry, mechanical instrumentation, etc., without delaying normal use, thereby improving the overall application range of the stainless steel pipe.

[0017] The utility model is provided with a stainless steel pipe body, a wear-resistant protective layer, an intermediate layer, an inner layer, a reinforcement strip and a corrosion-resistant protective layer. When the stainless steel pipe is used for pipeline transportation in industrial environments such as petroleum, chemical industry, medical treatment, food, light industry, mechanical instrumentation, etc., the intermediate layer, the inner layer and the reinforcement strip strengthen the rigidity of the stainless steel pipe body itself, so that the stainless steel pipe body has a certain bearing capacity. Then, the wear-resistant protective layer on the outside of the stainless steel pipe body and the corrosion-resistant protective layer inside the inner layer allow the stainless steel pipe to resist external wear and corrosion to liquids or gases circulating inside when performing pipeline transportation. In this way, whether it is used externally or transported internally, the overall service life of the stainless steel pipe is improved and the maintenance cost is reduced. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in the present invention. For ordinary technicians in this field, other drawings can also be obtained based on these drawings.

[0019] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0020] Figure 2 This is a schematic diagram of the inner layer structure of the utility model;

[0021] Figure 3 This is a schematic diagram of the butt-jointed steel pipe structure of the utility model;

[0022] Figure 4 It is a schematic diagram of the structure of the outer sealing sleeve of the utility model.

[0023] Description of reference numerals:

[0024] 1. Stainless steel pipe body; 2. Wear-resistant protective layer; 3. Middle layer; 4. Inner layer; 5. Reinforcement strip; 6. Corrosion-resistant protective layer; 7. Butt groove; 8. Threaded pipe; 9. Butt steel pipe; 10. External sealing sleeve; 11. Internal groove; 12. Sealing ring; 13. First flange; 14. Fixing bolts; 15. Second flange; 16. Hexagonal nut. DETAILED DESCRIPTION

[0025] In order to enable those skilled in the art to better understand the technical solution of the present invention, the present invention will be further described in detail below in conjunction with the accompanying drawings.

[0026] The utility model provides Figure 1-4 A reinforced seamless stainless steel pipe shown includes a stainless steel pipe body 1, which is used for pipeline support or butt-joint transportation;

[0027] A docking groove 7 is provided at one end of the stainless steel pipe body 1 for preliminary docking with other stainless steel pipes, and a threaded pipe 8 is movably connected inside the docking groove 7, and a docking steel pipe 9 is fixedly installed at one end of the threaded pipe 8;

[0028] The outer sealing sleeve 10 is arranged outside the stainless steel pipe body 1 and is used to seal the connection of the stainless steel pipe. An inner groove 11 is provided inside the outer sealing sleeve 10, and a sealing ring 12 is fixedly installed inside the inner groove 11.

[0029] The first flange 13 is fixedly installed on the outside of the stainless steel pipe body 1 to strengthen the stability of the stainless steel pipe connection. A fixing bolt 14 runs through the outside of the first flange 13. One end of the fixing bolt 14 is movably connected to the second flange 15. A hexagonal nut 16 is provided on the outside of the fixing bolt 14. The first flange 13 on the outside of the stainless steel pipe body 1 and the second flange 15 on the outside of the docking steel pipe 9 are connected by the fixing bolt 14 to strengthen the stability of the connection and allow the stainless steel pipe to meet the purpose of quick connection with other stainless steel pipes.

[0030] like Figure 1 , Figure 2 and Figure 3 As shown, a wear-resistant protective layer 2 is pasted on the outside of the stainless steel pipe body 1, an intermediate layer 3 is fixedly installed inside the stainless steel pipe body 1, an inner layer 4 is bonded to the inside of the intermediate layer 3, the intermediate layer 3, the inner layer 4 and the reinforcement strip 5 strengthen the rigidity of the stainless steel pipe body 1 itself, so that the stainless steel pipe body 1 has a certain bearing capacity, the stainless steel pipe body 1 and the wear-resistant protective layer 2 are tightly fitted, the material of the wear-resistant protective layer 2 is: tungsten carbide, the wear-resistant protective layer 2 on the outside of the stainless steel pipe body 1 allows the stainless steel pipe to resist external wear during pipeline transportation, reduce the loss of the stainless steel pipe body 1 caused by external wear and extend the service life, a reinforcement strip 5 is fixedly installed on the outside of the inner layer 4, a corrosion-resistant protective layer 6 is pasted to the inside of the inner layer 4, the reinforcement strip 5 is evenly arranged on the outside of the inner layer 4, and is bonded to the intermediate layer 3 to strengthen the wall thickness of the stainless steel pipe body 1 itself, and assist the stainless steel pipe body 1 to complete pipeline transportation and other tasks.

[0031] like Figure 1 , Figure 3 and Figure 4 As shown, the corrosion-resistant protective layer 6 fits tightly with the inner layer 4. The material of the corrosion-resistant protective layer 6 is polyurethane. The corrosion-resistant protective layer 6 allows the stainless steel pipe to be resistant to corrosion to the liquid or gas circulating inside when performing pipeline transportation, thereby reducing the loss of the stainless steel pipe during internal transportation. The number of fixing bolts 14 is set to six, and the six fixing bolts 14 are distributed in a circular array on the first flange 13. The first flange 13 on the outside of the stainless steel pipe body 1 and the second flange 15 on the outside of the docking steel pipe 9 are connected by the fixing bolts 14 to strengthen the stability of the connection and complete the quick connection operation.

[0032] The practical working principle of the present invention is as follows: first, when the stainless steel pipe is used for pipeline transportation in industrial environments such as petroleum, chemical industry, medical treatment, food, light industry, mechanical instrumentation, etc., according to the current use requirements, the butt groove 7 and the threaded pipe 8 can be used to make a preliminary connection between the butt steel pipe 9 and the stainless steel pipe body 1, and then an outer sealing sleeve 10 is sleeved on the connection. The outer sealing sleeve 10 and the internal sealing ring 12 strengthen the sealing of the connection between the butt steel pipe 9 and the stainless steel pipe body 1, and reduce the probability of leakage when used as a transportation pipeline. Then, the first flange 13 on the outside of the stainless steel pipe body 1 and the second flange 15 on the outside of the butt steel pipe 9 are connected through the fixing bolts 14 to strengthen the stability of the connection. In this way, the stainless steel pipe can meet the purpose of quick connection and extension when used in different occasions. Moreover, whether it is the preliminary connection of the butt groove 7 or the reinforced connection of the fixing bolts 14, the overall operation is simple and convenient. The stainless steel pipe is used in petroleum, chemical industry, medical treatment, food, light industry, mechanical instrumentation, etc. Industrial environment, does not delay normal use, so that after the stainless steel pipe is installed, it can carry out transportation work normally. When the stainless steel pipe is used for pipeline transportation in industrial environments such as petroleum, chemical, medical, food, light industry, mechanical instrumentation, etc., the middle layer 3, the inner layer 4 and the reinforcement strip 5 strengthen the rigidity of the stainless steel pipe body 1 itself, so that the stainless steel pipe body 1 has a certain bearing capacity, and then the wear-resistant protective layer 2 on the outside of the stainless steel pipe body 1 and the corrosion-resistant protective layer 6 inside the inner layer 4 allow the stainless steel pipe to resist external wear and corrosion to the liquid or gas circulating inside during pipeline transportation. The ability to improve the overall service life of the stainless steel pipe and reduce maintenance costs. Finally, after completing the quick connection installation and use of all stainless steel pipes according to the above operations, daily maintenance is required. The material of the wear-resistant protective layer 2 is: tungsten carbide, and the material of the corrosion-resistant protective layer 6 is: polyurethane. In this way, the use process of the quick-connect stainless steel pipe is completed.

[0033] The above only describes some exemplary embodiments of the present invention by way of illustration. It is undoubted that those skilled in the art can modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the above drawings and descriptions are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. A reinforced seamless stainless steel pipe, characterized in that: include The stainless steel pipe body (1) is used for pipeline support or butt joint transportation; A docking groove (7) is provided at one end of the stainless steel pipe body (1) for preliminary docking with other stainless steel pipes, and a threaded pipe (8) is movably connected inside the docking groove (7), and a docking steel pipe (9) is fixedly installed at one end of the threaded pipe (8); The outer sealing sleeve (10) is arranged outside the stainless steel pipe body (1) and is used to seal the connection of the stainless steel pipe. An inner groove (11) is provided inside the outer sealing sleeve (10), and a sealing ring (12) is fixedly installed inside the inner groove (11). The first flange (13) is fixedly mounted on the outside of the stainless steel pipe body (1) to strengthen the stability of the stainless steel pipe connection, and a fixing bolt (14) passes through the outside of the first flange (13), one end of the fixing bolt (14) is movably connected to the second flange (15), and a hexagonal nut (16) is arranged on the outside of the fixing bolt (14).

2. A reinforced seamless stainless steel pipe according to claim 1, characterized in that: The outside of the stainless steel tube body (1) is bonded with a wear-resistant protective layer (2), the inside of the stainless steel tube body (1) is fixedly installed with an intermediate layer (3), and the inside of the intermediate layer (3) is bonded with an inner layer (4).

3. A reinforced seamless stainless steel pipe according to claim 2, characterized in that: The stainless steel tube body (1) and the wear-resistant protective layer (2) are tightly fitted together, and the material of the wear-resistant protective layer (2) is tungsten carbide.

4. A reinforced seamless stainless steel pipe according to claim 2, characterized in that: A reinforcement strip (5) is fixedly mounted on the outside of the inner stress layer (4), and a corrosion-resistant protective layer (6) is adhered to the inside of the inner stress layer (4).

5. A reinforced seamless stainless steel pipe according to claim 4, characterized in that: The corrosion-resistant protective layer (6) is tightly fitted to the inner layer (4), and the corrosion-resistant protective layer (6) is made of polyurethane.

6. The reinforced seamless stainless steel pipe according to claim 1, characterized in that: The number of the fixing bolts (14) is set to six, and the six fixing bolts (14) are distributed in a ring array on the first flange (13).

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