An anti-scaling and heat-insulating oil pipe and its installation method

Abstract

The present invention discloses an anti-scaling and heat-insulating oil pipe and its installation method, which relates to the technical field of oil pipes. It includes an oil production pipe body, and a first sealing end ring is fixedly sleeved on the outer surface of the right end of the oil production pipe body. By screwing the threaded adjustment ring, the threaded adjustment ring moves to the right. Since the inner ring of the connecting bearing is fixedly connected to one side surface of the threaded adjustment ring, when the threaded adjustment ring moves to the right, it will drive the connecting bearing to move to the right. Since the outer ring of the connecting bearing is movably connected to one end of the square insertion rod located inside the fixed connection ring through a connecting diagonal rod, when the connecting bearing moves to the right, the square insertion rod will move outward until the outer end of the square insertion rod is inserted into the square limiting hole, thereby limiting the thin metal sealing protection sleeve and completing the installation of the thin metal sealing protection sleeve. The present invention can realize the rapid installation and disassembly of the thin metal sealing protection sleeve, thereby greatly improving the installation efficiency.

Description

Technical Field

[0001] The present invention belongs to the technical field of oil pipes, and particularly relates to an anti-scaling and heat-insulating oil pipe and an installation method thereof. Background Art

[0002] Since the length of the oil pipe is generally several thousand meters, during oil well operations, the phenomenon of oil thickening and caking often occurs due to excessive heat dissipation, resulting in oil pipe blockage, cracking or even fracture, causing great potential safety hazards. At the same time, due to the high corrosiveness of the oil product and the humid underground environment, the oil pipe is extremely vulnerable to corrosion damage, and its service life is greatly limited. The oil pipe is made of high-cost high-quality alloy steel materials and cannot be easily discarded. It is not an easy task to repair corrosion or remove oil stains and unclog the blockage of the oil pipe deep underground for several thousand meters. Even for a small oil field with an annual output of 2 million tons, if effective measures are not taken to avoid corrosion and blockage of the oil pipe, as many as 170,000 oil pipes need to be repaired or replaced every year. Calculated at a maintenance cost of 700 yuan per pipe, this will also be an astronomical figure. The use of traditional thermal insulation or waterproof and anti-corrosion materials often requires a sufficient thickness to play a role, which is limited by the diameter of the oil well casing. Moreover, the traditional materials require complex bonding or spraying processes, which also limit their application. Therefore, traditional materials cannot effectively insulate and protect the oil pipe against corrosion.

[0003] The Chinese patent application discloses a high-performance heat-insulating oil production pipe with an anti-corrosion lining, and its publication number is CN107763328A. This patent application is reasonably designed and has a simple structure. The oil pipe heat insulation technology uses various means, and the heat insulation effect is excellent. At the same time, it has an anti-corrosion function; the anti-corrosion lining steel pipe structure is adopted, which greatly improves the corrosion resistance of the steel pipe in the processes of oil production, oil transportation, oil refining and industrial processes. The surface is smooth, the fluid resistance is small, and the high mechanical strength of the steel pipe is retained, improving the service life of the steel pipe and the safety production efficiency. However, since the above patent application does not design an anti-scaling layer, the anti-scaling effect of the above patent is poor. Moreover, it is relatively inconvenient to install a thin metal sealing protection casing in the above patent application. Therefore, the present invention designs an anti-scaling and heat-insulating oil pipe and an installation method thereof to solve the above problems. Summary of the Invention

[0004] The purpose of the present invention is to provide an anti-scaling and heat-insulating oil pipe and an installation method thereof. By combining the use of an anti-scaling layer and square insertion rods, the problems of poor anti-scaling effect of the existing patents and inconvenience in installing a thin metal sealing protection casing are solved.

[0005] To solve the above technical problems, the present invention is realized through the following technical solutions:

[0006] The present invention relates to a scale - preventing and heat - insulating oil pipe and its installation method, including an oil production pipe body. A first sealing end ring is fixedly sleeved on the outer surface of the right end of the oil production pipe body. An annular accommodating groove is formed on the right side surface of the first sealing end ring. A number of reset springs evenly distributed in a ring shape are fixedly connected inside the annular accommodating groove. One end of the reset spring is fixedly connected to an inner wall of the annular accommodating groove, and the other end of the reset spring is fixedly installed with an annular sealing gasket matching the annular accommodating groove. A second sealing end ring is fixedly sleeved on the outer surface of the left end of the oil production pipe body. A threaded groove is engraved on the outer surface of the second sealing end ring. A fixed connection ring is fixedly installed at the right end of the second sealing end ring. An aerogel heat - insulating layer and a VIP board heat - insulating layer are wrapped on the outer surface of the oil production pipe body between the first sealing end ring and the fixed connection ring. The VIP board heat - insulating layer is located outside the aerogel heat - insulating layer. A thin metal sealing protection sleeve is detachably sleeved on the outside of the first sealing end ring, the fixed connection ring and the VIP board heat - insulating layer. A number of square limiting holes evenly distributed in a ring shape are formed at the left end of the thin metal sealing protection sleeve. A number of square inserting rods evenly distributed in a ring shape penetrate through the inside of the fixed connection ring. One end of the square inserting rod located outside the fixed connection ring is inserted into the corresponding square limiting hole. A threaded adjusting ring is threadedly connected to the outside of the second sealing end ring. A connecting bearing is sleeved on the outer surface of the second sealing end ring on the right side of the threaded adjusting ring. The inner ring of the connecting bearing is fixedly connected to one side surface of the threaded adjusting ring, and the outer ring of the connecting bearing is movably connected to one end of the square inserting rod located inside the fixed connection ring through a connecting diagonal rod.

[0007] Further, an anti - corrosion inner lining layer is arranged on the inner wall of the oil production pipe body, and a scale - preventing layer is installed on the inner wall of the anti - corrosion inner lining layer.

[0008] Further, the annular sealing gasket is inserted into the annular accommodating groove, and the annular sealing gasket is in sliding fit with the annular accommodating groove.

[0009] Further, a sealing extrusion ring is fixedly installed at the right end of the thin metal sealing protection sleeve. The inner wall of the sealing extrusion ring contacts the outer surface of the oil production pipe body. One side surface of the sealing extrusion ring forms extrusion with one side surface of the annular sealing gasket away from the reset spring, so as to form a seal.

[0010] Further, a through hole matching the square inserting rod is formed inside the fixed connection ring. The square inserting rod passes through the through hole on the fixed connection ring. The outer surface of the square inserting rod contacts the inner wall of the through hole on the fixed connection ring, and both the outer surface of the square inserting rod and the inner wall of the through hole on the fixed connection ring are smooth.

[0011] Further, one end of the connecting diagonal rod is rotatably connected to one end of the square insertion rod located inside the fixed connection ring through a hinge seat, and the other end of the connecting diagonal rod is rotatably connected to the outer ring of the connecting bearing through another hinge seat.

[0012] Further, an installation method for an anti-scaling and heat-insulating oil pipe includes the following steps:

[0013] SS001: First, the staff places the anti-corrosion inner lining layer on the inner wall of the production oil pipe body, and then places the anti-scaling layer on the inner wall of the anti-corrosion inner lining layer. After installing the anti-corrosion inner lining layer and the anti-scaling layer, the first sealing end ring is fixed on the outer side of the right end of the production oil pipe body, and the second sealing end ring and the fixed connection ring are fixed on the outer side of the left end of the production oil pipe body;

[0014] SS002: Then, the aerogel heat-insulating layer and the VIP board heat-insulating layer are installed on the outer surface of the production oil pipe body, and the aerogel heat-insulating layer and the VIP board heat-insulating layer are placed between the first sealing end ring and the fixed connection ring. Then, the thin metal sealing protection sleeve is sleeved from the right end onto the outer sides of the first sealing end ring, the fixed connection ring, and the VIP board heat-insulating layer until the sealing extrusion ring can squeeze the annular sealing gasket into the annular accommodation groove. Through the combined use of the annular accommodation groove, the return spring, the annular sealing gasket, and the sealing extrusion ring, a seal can be formed;

[0015] SS003: Finally, the threaded adjustment ring is screwed, so that the threaded adjustment ring moves to the right. Since the inner ring of the connecting bearing is fixedly connected to one side surface of the threaded adjustment ring, when the threaded adjustment ring moves to the right, it will drive the connecting bearing to move to the right. Since the outer ring of the connecting bearing is movably connected to one end of the square insertion rod located inside the fixed connection ring through the connecting diagonal rod, when the connecting bearing moves to the right, the square insertion rod will move outward until the outer end of the square insertion rod is inserted into the square limiting hole, thereby limiting the thin metal sealing protection sleeve and completing the installation of the thin metal sealing protection sleeve.

[0016] The present invention has the following beneficial effects:

[0017] 1. By sleeving the thin metal sealing protection sleeve from the right end onto the outer sides of the first sealing end ring, the fixed connection ring, and the VIP board heat-insulating layer until the sealing extrusion ring can squeeze the annular sealing gasket into the annular accommodation groove, and through the combined use of the annular accommodation groove, the return spring, the annular sealing gasket, and the sealing extrusion ring, a seal can be formed, so that the installation effect is better and it is easy to be promoted to the market.

[0018] 2. By screwing the threaded adjustment ring, the threaded adjustment ring moves to the right. Since the inner ring of the connecting bearing is fixedly connected to one side surface of the threaded adjustment ring, when the threaded adjustment ring moves to the right, it will drive the connecting bearing to move to the right. Since the outer ring of the connecting bearing is movably connected to one end of the square insertion rod located inside the fixed connection ring through the connecting diagonal rod, when the connecting bearing moves to the right, it will cause the square insertion rod to move outward until the outer end of the square insertion rod is inserted into the square limiting hole, thereby limiting the thin metal sealing and protecting sleeve and completing the installation of the thin metal sealing and protecting sleeve. The present invention can realize the rapid installation and disassembly of the thin metal sealing and protecting sleeve, thus greatly improving the installation efficiency.

[0019] Of course, it is not necessary for any product implementing the present invention to achieve all the above-mentioned advantages simultaneously. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following will briefly introduce the drawings required for the description of the embodiments. Obviously, the drawings in the following description are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained based on these drawings.

[0021] Figure 1 is a schematic structural diagram of an anti-scaling and heat-insulating oil pipe;

[0022] Figure 2 is a cross-sectional view of an anti-scaling and heat-insulating oil pipe;

[0023] Figure 3 For the present invention Figure 2 is an enlarged view of part A in;

[0024] Figure 4 For the present invention Figure 2 is an enlarged view of part B in;

[0025] In the drawings, the list of components represented by each reference numeral is as follows:

[0026] 1. Production oil pipe body; 2. Anticorrosion lining layer; 3. Anti-scaling layer; 4. First sealing end ring; 5. Annular accommodation groove; 6. Return spring; 7. Annular sealing gasket; 8. Second sealing end ring; 9. Fixed connection ring; 10. Aerogel heat-insulating layer; 11. VIP board heat-insulating layer; 12. Thin metal sealing and protecting sleeve; 13. Sealing extrusion ring; 14. Square limiting hole; 15. Square insertion rod; 16. Threaded adjustment ring; 17. Connecting bearing; 18. Connecting diagonal rod. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0027] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all of the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention. <OO00066>Please refer to Figures 1-4 It should be noted that there may be an error in the "OO00066" you provided. It should probably be "

[0028] "., the present invention relates to a scale - resistant and heat - insulating oil pipe, which includes a production oil pipe body 1. An anti - corrosion lining layer 2 is provided on the inner wall of the production oil pipe body 1. A scale - resistant layer 3 is installed on the inner wall of the anti - corrosion lining layer 2. A first sealing end ring 4 is fixedly sleeved on the outer surface of the right end of the production oil pipe body 1. An annular accommodation groove 5 is opened on the right side surface of the first sealing end ring 4. A number of reset springs 6 evenly distributed in a ring shape are fixedly connected inside the annular accommodation groove 5. One end of the reset spring 6 is fixedly connected to an inner wall of the annular accommodation groove 5, and the other end of the reset spring 6 is fixedly installed with an annular sealing gasket 7 that matches the annular accommodation groove 5. The annular sealing gasket 7 is inserted into the annular accommodation groove 5, and the annular sealing gasket 7 is in sliding fit with the annular accommodation groove 5. A second sealing end ring 8 is fixedly sleeved on the outer surface of the left end of the production oil pipe body 1. A thread groove is engraved on the outer surface of the second sealing end ring 8. A fixed connection ring 9 is fixedly installed at the right end of the second sealing end ring 8. An aerogel heat - insulating layer 10 and a VIP board heat - insulating layer 11 are wrapped on the outer surface of the production oil pipe body 1 and between the first sealing end ring 4 and the fixed connection ring 9. The VIP board heat - insulating layer 11 is located outside the aerogel heat - insulating layer 10. A thin metal sealing protection sleeve 12 is detachably sleeved on the outside of the first sealing end ring 4, the fixed connection ring 9, and the VIP board heat - insulating layer 11. A sealing extrusion ring 13 is fixedly installed at the right end of the thin metal sealing protection sleeve 12. The inner wall of the sealing extrusion ring 13 contacts the outer surface of the production oil pipe body 1. One side surface of the sealing extrusion ring 13 forms extrusion with the side surface of the annular sealing gasket 7 away from the reset spring 6, thereby forming a seal. A number of square limiting holes 14 evenly distributed in a ring shape are opened at the left end of the thin metal sealing protection sleeve 12. A number of square insertion rods 15 evenly distributed in a ring shape penetrate through the inside of the fixed connection ring 9. A through - hole matching the square insertion rods 15 is opened inside the fixed connection ring 9. The square insertion rods 15 pass through the through - holes on the fixed connection ring 9. The outer surface of the square insertion rods 15 contacts the inner wall of the through - holes on the fixed connection ring 9, and both the outer surface of the square insertion rods 15 and the inner wall of the through - holes on the fixed connection ring 9 are smooth. One end of the square insertion rod 15 located outside the fixed connection ring 9 is inserted into the corresponding square limiting hole 14. A threaded adjustment ring 16 is threadedly connected to the outside of the second sealing end ring 8. A connection bearing 17 is sleeved on the outer surface of the second sealing end ring 8 and on the right side of the threaded adjustment ring 16. The inner ring of the connection bearing 17 is fixedly connected to one side surface of the threaded adjustment ring 16. The outer ring of the connection bearing 17 is movably connected to one end of the square insertion rod 15 located inside the fixed connection ring 9 through a connection diagonal rod 18. One end of the connection diagonal rod 18 is rotatably connected to one end of the square insertion rod 15 located inside the fixed connection ring 9 through a hinge seat, and the other end of the connection diagonal rod 18 is rotatably connected to the outer ring of the connection bearing 17 through another hinge seat.

[0029] A specific application of this embodiment is as follows: First, the staff places the anti-corrosion lining layer 2 on the inner wall of the production tubing body 1, and then places the anti-scaling layer 3 on the inner wall of the anti-corrosion lining layer 2. After installing the anti-corrosion lining layer 2 and the anti-scaling layer 3, the first sealing end ring 4 is fixed on the outer side of the right end of the production tubing body 1, and the second sealing end ring 8 and the fixed connection ring 9 are fixed on the outer side of the left end of the production tubing body 1; then the aerogel thermal insulation layer 10 and the VIP board thermal insulation layer 11 are installed on the outer surface of the production tubing body 1, and the aerogel thermal insulation layer 10 and the VIP board thermal insulation layer 11 are placed between the first sealing end ring 4 and the fixed connection ring 9. After that, the thin metal sealing protection sleeve 12 is sleeved from the right end onto the outer sides of the first sealing end ring 4, the fixed connection ring 9, and the VIP board thermal insulation layer 11 until the sealing extrusion ring 13 can squeeze the annular sealing gasket 7 into the annular accommodation groove 5. By the combined use of the annular accommodation groove 5, the return spring 6, the annular sealing gasket 7, and the sealing extrusion ring 13, a seal can be formed; finally, the threaded adjustment ring 16 is screwed, causing the threaded adjustment ring 16 to move to the right. Since the inner ring of the connecting bearing 17 is fixedly connected to one side surface of the threaded adjustment ring 16, when the threaded adjustment ring 16 moves to the right, it will drive the connecting bearing 17 to move to the right. Since the outer ring of the connecting bearing 17 is movably connected to one end of the square insertion rod 15 located inside the fixed connection ring 9 through the connecting inclined rod 18, the connecting bearing 17 moving to the right will cause the square insertion rod 15 to move outward until the outer end of the square insertion rod 15 is inserted into the square limiting hole 14, thereby limiting the thin metal sealing protection sleeve 12 and completing the installation of the thin metal sealing protection sleeve 12.

[0030] In the description of this specification, the description with reference to terms such as "one embodiment", "example", "specific example", etc. means that the specific features, structures, materials, or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic expressions of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described can be combined in a suitable manner in any one or more embodiments or examples.

[0031] The preferred embodiments of the present invention disclosed above are only used to help illustrate the present invention. The preferred embodiments do not elaborate on all the details, nor do they limit the invention to the specific embodiments described. Obviously, many modifications and variations can be made according to the content of this specification. This specification selects and specifically describes these embodiments in order to better explain the principles and practical applications of the present invention, so that those skilled in the relevant technical field can well understand and utilize the present invention. The present invention is only limited by the claims and their full scope and equivalents.

Claims

1. An anti-scaling and heat-insulating oil pipe, characterized in that: It includes a production tubing body (1). A first sealing end ring (4) is fixedly sleeved on the outer surface of the right end of the production tubing body (1). An annular accommodation groove (5) is formed on the right side surface of the first sealing end ring (4). A number of reset springs (6) evenly distributed in a ring shape are fixedly connected inside the annular accommodation groove (5). One end of the reset spring (6) is fixedly connected to an inner wall of the annular accommodation groove (5), and the other end of the reset spring (6) is fixedly installed with an annular sealing gasket (7) matching the annular accommodation groove (5). A second sealing end ring (8) is fixedly sleeved on the outer surface of the left end of the production tubing body (1). Thread grooves are engraved on the outer surface of the second sealing end ring (8). A fixed connection ring (9) is fixedly installed at the right end of the second sealing end ring (8). An aerogel heat insulation layer (10) and a VIP board heat insulation layer (11) are wrapped on the outer surface of the production tubing body (1) and between the first sealing end ring (4) and the fixed connection ring (9). The VIP board heat insulation layer (11) is located outside the aerogel heat insulation layer (10). A thin metal sealing protection sleeve (12) is detachably sleeved outside the first sealing end ring (4), the fixed connection ring (9), and the VIP board heat insulation layer (11). A number of square limiting holes (14) evenly distributed in a ring shape are formed at the left end of the thin metal sealing protection sleeve (12). A number of square inserting rods (15) evenly distributed in a ring shape penetrate through the inside of the fixed connection ring (9). One end of the square inserting rod (15) located outside the fixed connection ring (9) is inserted into the corresponding square limiting hole (14). A threaded adjusting ring (16) is threadedly connected to the outside of the second sealing end ring (8). A connection bearing (17) is sleeved on the outer surface of the second sealing end ring (8) and on the right side of the threaded adjusting ring (16). The inner ring of the connection bearing (17) is fixedly connected to one side surface of the threaded adjusting ring (16), and the outer ring of the connection bearing (17) is movably connected to one end of the square inserting rod (15) located inside the fixed connection ring (9) through a connection inclined rod (18). [[ID=~1]]An anti-corrosion inner lining layer (2) is arranged on the inner wall of the production tubing body (1), and an anti-scaling layer (3) is installed on the inner wall of the anti-corrosion inner lining layer (2). One end of the connection inclined rod (18) is rotatably connected to one end of the square inserting rod (15) located inside the fixed connection ring (9) through a hinge seat, and the other end of the connection inclined rod (18) is rotatably connected to the outer ring of the connection bearing (17) through another hinge seat.

2. The anti-scaling and heat-insulating oil pipe according to claim 1, wherein The annular sealing gasket (7) is inserted into the annular accommodation groove (5), and the annular sealing gasket (7) is in sliding fit with the annular accommodation groove (5).

3. The anti-scaling and heat-insulating oil pipe according to claim 1, characterized in that, A sealing extrusion ring (13) is fixedly installed at the right end of the thin metal sealing protection sleeve (12). The inner wall of the sealing extrusion ring (13) contacts the outer surface of the production tubing body (1), and one side surface of the sealing extrusion ring (13) forms an extrusion with one side surface of the annular sealing gasket (7) away from the reset spring (6).

4. A scale prevention and heat insulation tubing according to claim 1, characterized in that A through hole matching the square insertion rod (15) is formed inside the fixed connection ring (9). The square insertion rod (15) passes through the through hole in the fixed connection ring (9). The outer surface of the square insertion rod (15) contacts the inner wall of the through hole in the fixed connection ring (9), and both the outer surface of the square insertion rod (15) and the inner wall of the through hole in the fixed connection ring (9) are smooth.

5. The installation method of a scale prevention and heat insulation oil pipe according to any one of claims 1-4, characterized in that, It includes the following steps: SS001: First, the staff places the anti-corrosion lining layer (2) on the inner wall of the production tubing body (1), and then places the anti-scaling layer (3) on the inner wall of the anti-corrosion lining layer (2). After installing the anti-corrosion lining layer (2) and the anti-scaling layer (3), the first sealing end ring (4) is fixed on the outer side of the right end of the production tubing body (1), and the second sealing end ring (8) and the fixed connection ring (9) are fixed on the outer side of the left end of the production tubing body (1); SS002: Then, the aerogel thermal insulation layer (10) and the VIP board thermal insulation layer (11) are installed on the outer surface of the production tubing body (1), and the aerogel thermal insulation layer (10) and the VIP board thermal insulation layer (11) are placed between the first sealing end ring (4) and the fixed connection ring (9). Then, the thin metal sealing protection sleeve (12) is sleeved from the right end onto the outer sides of the first sealing end ring (4), the fixed connection ring (9), and the VIP board thermal insulation layer (11) until the sealing extrusion ring (13) can squeeze the annular sealing gasket (7) into the annular accommodation groove (5). Through the combined use of the annular accommodation groove (5), the return spring (6), the annular sealing gasket (7), and the sealing extrusion ring (13), a seal can be formed; SS003: Finally, the threaded adjustment ring (16) is screwed, causing the threaded adjustment ring (16) to move to the right. Since the inner ring of the connecting bearing (17) is fixedly connected to one side surface of the threaded adjustment ring (16), when the threaded adjustment ring (16) moves to the right, it will drive the connecting bearing (17) to move to the right. Since the outer ring of the connecting bearing (17) is movably connected to the end of the square insertion rod (15) inside the fixed connection ring (9) through the connecting inclined rod (18), the connecting bearing (17) moving to the right will cause the square insertion rod (15) to move outward until the outer end of the square insertion rod (15) is inserted into the square limit hole (14), thereby limiting the thin metal sealing protection sleeve (12) and completing the installation of the thin metal sealing protection sleeve (12).

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