High-strength seamless steel tube for petrochemical industry

Abstract

The utility model relates to the technical field of petrochemical equipment, and discloses a high-strength seamless steel tube for petrochemical engineering, which comprises two seamless steel tube bodies, a protection component is arranged on the outer wall of each seamless steel tube body, gaskets are arranged at two ends of each protection component, wing rings are fixedly connected to the peripheries of the gaskets, and the wing rings are fixedly connected to the peripheries of the wing rings. The inner circumference of the gasket is fixedly connected with a sealing ring, one wing ring is connected with the other wing ring through a clamping assembly, the outer wall of one wing ring and the outer wall of the other wing ring are sleeved with two lock sleeves, and the two lock sleeves are connected through a fixing assembly; the protection assembly comprises a heat preservation layer fixedly connected to the outer wall of the seamless steel pipe body. According to the utility model, multi-layer limiting and fixing can be carried out to position, splice and mount a plurality of steel pipes, so that the mounting process is facilitated, the use of excessive bolts and nuts to match splicing and mounting is reduced, and the convenience of splicing and mounting of the steel pipes is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of petrochemical equipment, in particular to a high-strength seamless steel pipe used in petrochemical industry. Background Art

[0002] Petrochemical industry generally refers to the chemical industry that uses petroleum and natural gas as raw materials. Crude oil can be processed through cracking (cracking), reforming and separation to produce various basic organic raw materials such as methanol, formaldehyde, ethanol, acetaldehyde, acetic acid, isopropanol, acetone, phenol, etc. Seamless steel pipe is a steel pipe made by perforating a whole round steel bar without welds on the surface. Seamless steel pipe is mainly used as petroleum geological drilling pipe, cracking pipe for petrochemical industry, boiler pipe, bearing pipe and high-precision structural steel pipe for automobiles, tractors and aviation.

[0003] After searching, a high-strength seamless stainless steel pipe for petrochemical industry with announcement number CN216201367U includes a corrosion-resistant sleeve, a front joint is fixedly provided at one end of the corrosion-resistant sleeve, a rear joint is fixedly provided at the end of the corrosion-resistant sleeve away from the front joint, two fixing plates are fixedly provided on the outer wall of the front joint close to the corrosion-resistant sleeve, and two fixing seats are provided on the outer wall of the rear joint away from the corrosion-resistant sleeve, the two fixing plates and the two fixing seats are fixedly connected by bolts, a buffer layer is provided on the inner side of the corrosion-resistant sleeve, an inner tube body is provided on the inner side of the buffer layer, and a corrosion-resistant pipe is provided on the inner side of the inner tube body. The utility model discloses a high-strength seamless stainless steel pipe for petrochemical industry, the connection between the steel pipes is tighter and more reliable, the corrosion-resistant sleeve and the corrosion-resistant pipe can effectively protect the steel pipe, the buffer layer can reduce the damage to the inner tube body caused by impact, ensure the normal use of the steel pipe, and increase the service life of the steel pipe;

[0004] Based on the above patent, the background technology thereof mentions that it is inconvenient to assemble and disassemble steel pipes, which increases the construction and maintenance costs. In response to this technical problem, the present application proposes a high-strength seamless steel pipe for petrochemical industry. Utility Model Content

[0005] The utility model aims to solve the shortcomings of the prior art and proposes a high-strength seamless steel pipe for petrochemical industry, which is inconvenient to assemble and disassemble the steel pipe, thereby increasing the construction and maintenance costs.

[0006] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0007] A high-strength seamless steel pipe for petrochemical industry comprises two seamless steel pipe bodies, the outer walls of the seamless steel pipe bodies are provided with protection components, both ends of the protection components are provided with washers, the outer periphery of the washers are fixedly connected with wing rings, the inner periphery of the washers are fixedly connected with sealing rings, one of the wing rings is connected to the other wing ring by a clamping component, the outer walls of one of the wing rings and the other wing ring are provided with two locking sleeves, and the two locking sleeves are connected by a fixing component.

[0008] Furthermore, the protection component includes an insulation layer fixedly connected to the outer wall of the seamless steel pipe body, the outer wall of the insulation layer is fixedly connected to a protective layer, a plurality of reinforcing cores are arranged inside the insulation layer, and the plurality of reinforcing cores are equidistantly surrounding the outer circumference of the seamless steel pipe body, and the protective layer is fixedly connected to the adjacent side of the two washers.

[0009] Furthermore, the clamping assembly includes a plurality of latch teeth fixedly connected to one side of the wing ring, and a latch groove is provided on the adjacent side of any two adjacent latch teeth. The latch groove is located on one side of the wing ring, and the latch teeth on one side are connected to the latch groove on the other side.

[0010] Furthermore, the fixing component includes half screw parts respectively fixedly connected to the two ends of the locking sleeve, wherein one of the half screw parts and the other half screw parts are spliced ​​together, wherein the top sides of one of the half screw parts and the other half screw parts are provided with fixing parts, the bottom sides of the fixing parts are inserted into the interior of the half screw parts, and the outer walls of the fixing parts are provided with screw sleeves.

[0011] Furthermore, one end of the screw sleeve is threadedly connected to the outer wall of one of the half screw members and the other half screw member, and the other end of the screw sleeve is threadedly connected to the outer wall of the other end of the fixing member.

[0012] Furthermore, the thermal insulation layer is made of silicone foam as a raw material, and the protective layer and the reinforcing core are both made of stainless steel as a raw material.

[0013] Furthermore, both the front and rear sides of the lock sleeve are fixedly connected with protective sleeves, and the protective sleeves are sleeved on the outer wall of the protective layer.

[0014] The utility model has the following beneficial effects:

[0015] 1. In the utility model, through the mutual cooperation of the locking sleeve, the locking teeth, the slots, the half screws, the fixing parts and the screw sleeves, multi-layer limiting fixation can be performed to carry out the positioning and splicing installation of multiple steel pipes, thereby facilitating the installation process, reducing the use of excessive bolts and nuts for splicing installation, and improving the convenience of steel pipe splicing installation.

[0016] 2. In the utility model, through the cooperation of the reinforcing layer, the reinforcing core and the thermal insulation layer, the pipeline can be insulated and the impact resistance and rigidity can be improved, thereby greatly improving the overall strength of the steel pipe and further extending the service life of the steel pipe. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 A three-dimensional diagram of a high-strength seamless steel pipe for petrochemical industry proposed by the utility model;

[0018] Figure 2 This is a schematic diagram of the cross-sectional structure of a high-strength seamless steel pipe for petrochemical industry proposed by the utility model;

[0019] Figure 3 This is a schematic diagram of the longitudinal cross-section structure of a high-strength seamless steel pipe for petrochemical industry proposed by the utility model;

[0020] Figure 4 This is a schematic diagram of a splicing structure of a high-strength seamless steel pipe for petrochemical industry proposed by the utility model;

[0021] Figure 5 This is a schematic structural diagram of a locking sleeve for a high-strength seamless steel pipe used in petrochemical industry proposed by the utility model;

[0022] Figure 6 The utility model is a structural schematic diagram of a half-threaded part of a high-strength seamless steel pipe for petrochemical industry.

[0023] Legend:

[0024] 1. Seamless steel pipe body; 2. Insulation layer; 3. Reinforcement core; 4. Protective layer; 5. Washer; 6. Sealing ring; 7. Wing ring; 8. Clip; 9. Locking sleeve; 10. Protective sleeve; 11. Semi-screw; 12. Fixing piece; 13. Screw sleeve. DETAILED DESCRIPTION

[0025] 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.

[0026] Reference Figure 1-6, the utility model provides an embodiment: a high-strength seamless steel pipe for petrochemical industry, comprising two seamless steel pipe bodies 1, a wing ring 7 is fixedly connected to the outer periphery of a gasket 5, a sealing ring 6 is fixedly connected to the inner periphery of the gasket 5, two locking sleeves 9 are provided on the outer wall of one wing ring 7 and the other wing ring 7, and a protective sleeve 10 is fixedly connected to the front and rear sides of the locking sleeve 9, and the protective sleeve 10 is sleeved on the outer wall of the protective layer 4, and the protective sleeve 10 is used to protect and provide support at both ends of the connection of multiple steel pipes, and the outer wall of the insulation layer 2 fixedly connected to the outer wall of the seamless steel pipe body 1 is fixedly connected to the protective layer 4, and a plurality of reinforcing cores 3 are arranged inside the insulation layer 2, and the plurality of reinforcing cores 3 are equidistantly surrounded by the outer periphery of the seamless steel pipe body 1, the insulation layer 2 is prepared by silicone foam as a raw material, and the protective layer 4 and the reinforcing core 3 are prepared by stainless steel as a raw material, and the protective layer 4 is fixedly connected to the adjacent side of the two gaskets 5;

[0027] Specifically, the seamless steel pipe body 1 is used as a pipeline for transporting oil in petrochemical industry. Silicone foam has excellent heat resistance and chemical resistance. The thermal insulation layer 2 prepared by silicone foam has excellent thermal insulation and insulation performance, and provides certain impact resistance for the pipeline. At the same time, the external protective layer 4 and the internal reinforcement core 3 prepared by stainless steel help to improve the rigidity of the steel pipe and improve the overall strength. At the same time, stainless steel has excellent corrosion resistance and prolongs the service life of the steel pipe. The thermal insulation layer 2 prevents the heat loss of oil and avoids the influence of low temperature when working in cold weather.

[0028] A plurality of latch teeth 8 are fixedly connected to one side of the wing ring 7, and a latch groove is provided on the adjacent side of any two adjacent latch teeth 8, and the latch groove is located on one side of the wing ring 7, and the latch teeth 8 on one side are connected to the latch groove on the other side, and are respectively fixedly connected to the half screws 11 at both ends of the lock sleeve 9, wherein one half screw 11 is spliced ​​with the other half screw 11, and a fixing member 12 is provided on the top side of one half screw 11 and the other half screw 11, and the bottom side of the fixing member 12 is inserted into the interior of the half screw 11, and a screw sleeve 13 is provided on the outer wall of the fixing member 12, and one end of the screw sleeve 13 is threadedly connected to the outer wall of one half screw 11 and the other half screw 11, and the other end of the screw sleeve 13 is threadedly connected to the outer wall of the other end of the fixing member 12;

[0029] Specifically, the specifications of the latch teeth 8 correspond to those of the latch grooves. By engaging the latch teeth 8 with the latch grooves, the steel pipes can be positioned and spliced. At the same time, the steel pipes can be prevented from rotating after splicing, which would cause the connection to become loose, thereby enhancing the stability after splicing. The wing rings 7 on the two steel pipes are spliced ​​together, and the teeth 8 on the wing rings 7 are inserted into the slots to position the steel pipes. Subsequently, the two locking sleeves 9 are put onto the two wing rings 7, and the half screws 11 on the locking sleeves 9 are spliced ​​together. Subsequently, one end of the fixing piece 12 is inserted into the interior of the half screw 11 to perform a layer of limiting to prevent the half screw 11 from separating. Subsequently, the screw sleeve 13 is tightened on the outer wall of the two half screws 11 and the fixing piece 12, and the half screw 11 and the fixing piece 12 are connected through the screw sleeve 13, and the two half screws 11 are fixed, thereby performing a second layer of limiting. While further preventing the half screw 11 from separating for fixation, the connection and fixation of the fixing piece 12 and the half screw 11 are strengthened, so that multiple steel pipes can be conveniently spliced, reducing the use of excessive bolts and nuts to cooperate with the splicing and installation.

[0030] Working principle: When multiple steel pipes are spliced, the wing rings 7 on the two steel pipes are spliced ​​together so that the latch teeth 8 on the wing rings 7 are inserted into the latch groove to position the steel pipes. Then the two locking sleeves 9 are put on the two wing rings 7, and the half screws 11 on the locking sleeves 9 are spliced ​​together. Then one end of the fixing piece 12 is inserted into the interior of the half screw 11 to perform a layer of limiting. Then the screw sleeve 13 is tightened on the outer wall of the two half screws 11 and the fixing piece 12. The half screw 11 and the fixing piece 12 are connected through the screw sleeve 13, and the two half screws 11 are fixed, thereby performing a second layer of limiting and completing the splicing of multiple steel pipes.

[0031] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A high-strength seamless steel pipe for petrochemical industry, comprising two seamless steel pipe bodies (1), characterized in that: The outer wall of the seamless steel pipe body (1) is provided with a protection component, and washers (5) are provided at both ends of the protection component. A wing ring (7) is fixedly connected to the outer periphery of the washer (5), and a sealing ring (6) is fixedly connected to the inner periphery of the washer (5). One of the wing rings (7) is connected to the other wing ring (7) through a clamping component, and the outer walls of one of the wing rings (7) and the other wing ring (7) are provided with two locking sleeves (9), and the two locking sleeves (9) are connected through a fixing component.

2. The high-strength seamless steel pipe for petrochemical industry according to claim 1, characterized in that: The protection component comprises an insulation layer (2) fixedly connected to the outer wall of the seamless steel pipe body (1); the outer wall of the insulation layer (2) is fixedly connected to a protective layer (4); a plurality of reinforcing cores (3) are arranged inside the insulation layer (2); the plurality of reinforcing cores (3) are equidistantly surrounded by the outer circumference of the seamless steel pipe body (1); and the protective layer (4) is fixedly connected to the adjacent sides of the two washers (5).

3. The high-strength seamless steel pipe for petrochemical industry according to claim 1, characterized in that: The clamping assembly comprises a plurality of clamping teeth (8) fixedly connected to one side of the wing ring (7), and a clamping groove is provided on the adjacent side of any two adjacent clamping teeth (8), and the clamping groove is located on one side of the wing ring (7), and the clamping teeth (8) on one side are connected to the clamping groove on the other side.

4. The high-strength seamless steel pipe for petrochemical industry according to claim 1, characterized in that: The fixing assembly comprises half screw parts (11) respectively fixedly connected to two ends of the locking sleeve (9), wherein one of the half screw parts (11) and the other half screw part (11) are spliced ​​together, a fixing part (12) is arranged on the top side of one of the half screw parts (11) and the other half screw part (11), the bottom side of the fixing part (12) is inserted into the interior of the half screw part (11), and the outer wall of the fixing part (12) is provided with a screw sleeve (13).

5. The high-strength seamless steel pipe for petrochemical industry according to claim 4, characterized in that: One end of the screw sleeve (13) is threadedly connected to the outer wall of one of the half screw parts (11) and the other half screw part (11), and the other end of the screw sleeve (13) is threadedly connected to the outer wall of the other end of the fixing part (12).

6. The high-strength seamless steel pipe for petrochemical industry according to claim 2, characterized in that: The thermal insulation layer (2) is made of silicone foam as a raw material, and the protective layer (4) and the reinforcing core (3) are both made of stainless steel as a raw material.

7. The high-strength seamless steel pipe for petrochemical industry according to claim 1, characterized in that: The front and rear sides of the lock sleeve (9) are both fixedly connected with protective sleeves (10), and the protective sleeves (10) are sleeved on the outer wall of the protective layer (4).

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