An oil pipeline with a heating mechanism

Abstract

This utility model provides an oil pipeline with a heating mechanism, including a bend, a connecting flange, a horizontal pipe, an annular heating element mounting base, a semi-annular heating element, a semi-bent pipe heating element, a spliced ​​insulated bend, and a spliced ​​insulated straight pipe. The horizontal pipe section is covered with a large number of semi-annular heating elements, allowing for replacement of damaged individual small-sized components, making maintenance more convenient. The semi-bent pipe heating elements are fixed on the annular heating element mounting base along the length of the bend, covering the outer wall of the bend. Each semi-bent pipe heating element is small in size and heats up when energized. The entire bend section is covered with two semi-bent pipe heating elements. Since the bend itself is relatively short, the semi-bent pipe heating elements on both sides can be replaced for damaged individual components, making maintenance more convenient.

Description

Technical Field

[0001] This utility model relates to the field of petroleum transportation technology, and in particular to an oil pipeline with a heating mechanism. Background Technology

[0002] The descriptions in this section provide background information relating to this disclosure and do not constitute prior art.

[0003] Oil extraction sites are usually located in remote areas, so oil pipelines are often used to transport oil to other locations. In particular, if oil is at a relatively low temperature, its viscosity is high and its fluidity is poor, and the flow rate in the oil pipeline will become very slow. In order to improve the fluidity of the oil, the oil pipeline needs to be heated.

[0004] Common heating methods include whole-line heating or steam jacket heating. Both heat the entire pipeline. When the heating wire inside the whole-line heating cable is damaged or the steam jacket is partially damaged, the whole-line heating cable or steam jacket needs to be replaced, and the entire pipeline needs to be repaired, which is inconvenient. Utility Model Content

[0005] The purpose of this utility model is to provide an oil pipeline with a heating mechanism. The horizontal pipe section is covered with a large number of semi-circular heating elements, allowing for the replacement of damaged individual small-sized components. The curved pipe section is covered with two semi-curved heating elements. Since the curved section itself is relatively short, the semi-curved heating elements on both sides can be used to replace damaged individual components. This solves the technical problem that overall heat tracing or steam jacket heating heats the entire pipeline. When the built-in heating wire of the overall heat tracing cable is damaged or the steam jacket is partially damaged, the entire heat tracing cable or steam jacket needs to be replaced, making maintenance of the entire pipeline inconvenient and difficult.

[0006] This utility model provides an oil pipeline with a heating mechanism, comprising:

[0007] The bend has connecting flanges fixedly fitted to the outer walls of both ends;

[0008] A horizontal pipe is fixedly fitted to the outer end of the connecting flange;

[0009] The outer wall of the horizontal tube is uniformly and fixedly fitted with annular heating element mounting bases along its length, and both ends of the outer wall of the curved tube are fixedly fitted with annular heating element mounting bases.

[0010] The annular heating element mounting base on the outer wall of the horizontal tube is fixedly connected to both the upper and lower sides of the right end, and the upper and lower semi-annular heating elements are spliced ​​together to form a ring.

[0011] The right end of the semi-annular heating element abuts against the left side of the adjacent annular heating element mounting base;

[0012] Half-bent heating elements are fixedly connected to the upper and lower sides of the annular heating element mounting base at both ends of the outer wall of the bent pipe, and the upper and lower half-bent heating elements are spliced ​​together to form a bent pipe shape.

[0013] The outer wall of the semi-bent heating element described above and below is wrapped with a spliced ​​insulated bend.

[0014] The outer wall of the semi-annular heating element described above and below is wrapped with a spliced ​​insulated straight pipe.

[0015] As a further optimization, in order to connect and fix the semi-annular heating element or the semi-bent tube heating element, and to facilitate the installation and disassembly of the semi-annular heating element or the semi-bent tube heating element, the annular heating element mounting base includes:

[0016] An annular plate, which is fixedly sleeved on the outer wall of the bent or horizontal pipe;

[0017] The outer wall of the annular plate is uniformly provided with slots, and the bottom surface of the plate is provided with threaded holes.

[0018] The left end of the semi-annular heating element is fixedly connected to the slot of the adjacent annular plate;

[0019] The two ends of the semi-bent tube heating element are fixedly connected to the slots of the adjacent annular plate.

[0020] As a further optimization, in order to wrap and heat the outer wall of the horizontal tube, the semi-annular heating element includes:

[0021] A semi-circular plate, with a first ear plate fixedly connected to its left end in a slot corresponding to the adjacent annular plate;

[0022] The first ear plate is inserted into the corresponding slot;

[0023] A first connecting bolt passes through the outer wall of the first ear plate, and its end is screwed into the corresponding threaded hole;

[0024] The inner wall of the semi-annular plate is uniformly embedded with a first heating wire, which is in contact with the outer wall of the horizontal tube.

[0025] As a further optimization, in order to wrap and heat the outer wall of the bent pipe, the semi-bent pipe heating element includes:

[0026] The semi-bent tube has second ear plates fixedly connected to its two ends corresponding to the slots of the adjacent annular plates;

[0027] The second ear plate is inserted into the corresponding slot;

[0028] The second ear plate has a second connecting bolt passing through its outer wall, and its end is screwed into the corresponding threaded hole;

[0029] The inner wall of the semi-bent tube is uniformly embedded with a second heating wire, which is in contact with the outer wall of the bend tube.

[0030] As a further optimization, in order to insulate the semi-bent tube heating element spliced ​​into a bent tube shape and reduce heat loss, the spliced ​​insulated bent tube includes:

[0031] Both the upper and lower side bends are fixedly fitted with first retaining edges at both edges along their length.

[0032] The first bolt and nut are fixedly connected to the first stop edge along the length direction at the top and bottom.

[0033] The inner walls of the upper and lower half of the bend are in contact with the outer wall of the heating element of the half bend on the same side.

[0034] As a further optimization, in order to insulate the semi-annular heating element spliced ​​into a tubular shape and reduce heat loss, the spliced ​​insulated straight pipe includes:

[0035] Both the upper and lower outer tubes are fixedly fitted with second flanges at both edges along their length.

[0036] The upper and lower corresponding to the second retaining edge are fixedly connected with second bolts and nuts along the length direction;

[0037] The inner walls of the upper and lower outer tubes are in contact with the outer wall of the semi-annular heating element on the same side.

[0038] As a further optimization, in order to wrap around the outside of the spliced ​​insulated bend and the spliced ​​insulated straight pipe and play a role in heat preservation, the spliced ​​insulated bend and the spliced ​​insulated straight pipe have the same structure.

[0039] The spliced ​​insulated bend and spliced ​​insulated straight pipe are internally provided with an insulation layer structure, which includes:

[0040] The inner wall of the heat-insulating outer layer is in contact with the outer wall of the corresponding semi-bent tube heating element and semi-circular heating element.

[0041] As a further optimization, in order to shield and protect the outer insulation layer, the outer wall of the outer insulation layer is coated with a protective outer layer.

[0042] As a further optimization, in order to open a strip slot for storing cables, the outer walls of the semi-bent heating element and the semi-circular heating element are electrically connected to cables along the length direction.

[0043] The bottom surface of the thermal insulation outer layer has a slot corresponding to the cable;

[0044] The cable is inserted into the strip slot.

[0045] As a further optimization, in order to provide sufficient thermal insulation performance, the outer insulation layer is specifically a polyurethane foam layer.

[0046] This utility model provides an improved oil pipeline with a heating mechanism, which has the following improvements and advantages compared with the prior art:

[0047] 1. The oil pipeline uses a bend that is fixedly connected between the two horizontal pipes to facilitate the change of direction of oil transportation. Semi-circular heating elements are fixed on annular heating element mounting bases set along the length of the horizontal pipe. These semi-circular heating elements cover the outer wall of the horizontal pipe. Each semi-circular heating element is small in size, generates heat when energized, and there are a large number of semi-circular heating elements covering the entire horizontal pipe section. This allows for the replacement of damaged individual small-sized components, making maintenance more convenient. Similarly, semi-bent pipe heating elements are fixed on annular heating element mounting bases set along the length of the bend. These semi-bent pipe heating elements cover the outer wall of the bend. Each semi-bent pipe heating element is small in size, generates heat when energized, and there are two semi-bent pipe heating elements covering the entire bend section. Since the bend itself is relatively short, the semi-bent pipe heating elements on both sides can be replaced for damaged individual components, making maintenance more convenient.

[0048] 2. The outer wall of the semi-circular heating element covering the entire horizontal pipe is wrapped with a spliced ​​insulated straight pipe. The spliced ​​insulated straight pipe can be separated into upper and lower parts to facilitate the maintenance of the internal semi-circular heating element. The spliced ​​insulated straight pipe is used to wrap and insulate the semi-circular heating element covering the entire horizontal pipe inside.

[0049] The outer wall of the half-bent heating element covering the entire bend is wrapped with a spliced ​​insulated bend. The spliced ​​insulated bend can be separated into upper and lower parts to facilitate the maintenance of the internal half-bent heating element. The spliced ​​insulated bend is used to wrap and insulate the half-bent heating element covering the entire internal bend. Attached Figure Description

[0050] To more clearly illustrate the specific embodiments of this utility model or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0051] Figure 1 This is a schematic diagram of the structure of this utility model;

[0052] Figure 2 This is a partial structural schematic diagram of the present invention;

[0053] Figure 3 This is a schematic diagram of the spliced ​​insulated bend and spliced ​​insulated straight pipe structure of this utility model;

[0054] Figure 4 This is a schematic diagram of the annular heating element mounting base structure of this utility model;

[0055] Figure 5 This is a schematic diagram of the semi-annular heating element structure of this utility model;

[0056] Figure 6 This is a schematic diagram of the semi-bent tube heating element of this utility model.

[0057] Figure 7 This is a schematic cross-sectional view of the thermal insulation layer structure of this utility model.

[0058] Explanation of reference numerals in the attached figures:

[0059] 1-Bend, 2-Horizontal pipe, 3-Connecting flange, 4-Annular heating element mounting base, 41-Annular plate, 42-Slot, 43-Threaded hole, 5-Spliced ​​insulated bend, 51-Upper half bend, 52-Lower half bend, 53-First flange, 54-First bolt and nut, 6-Spliced ​​insulated straight pipe, 61-Upper half outer pipe, 62-Lower half outer pipe, 63-Second flange, 64-Second bolt and nut, 7-Semi-annular heating element, 71-Semi-annular plate, 72-First ear plate, 73-First connecting bolt, 74-First heating wire, 8-Semi-bend heating element, 81-Semi-bend, 82-Second ear plate, 83-Second connecting bolt, 84-Second heating wire, 9-Insulation layered structure, 91-Insulation outer layer, 92-Strip slot, 93-Protective outer layer. Detailed Implementation

[0060] The technical solution of this utility model will be clearly and completely described below with reference to the embodiments. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0061] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0062] In the description of this utility model, it should be understood that the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the stated features. In the description of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified. Furthermore, the terms "installed," "connected," and "linked" should be interpreted broadly; for example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0063] Please see Figure 1-7 This utility model provides a technical solution: an oil pipeline with a heating mechanism, comprising:

[0064] The elbow 1 has connecting flanges 3 fixedly fitted on the outer walls of both ends;

[0065] A horizontal pipe 2 is fixedly assembled on the outer end of the connecting flange 3;

[0066] The outer wall of the horizontal tube 2 is uniformly fitted with annular heating element mounting bases 4 along its length, and both ends of the outer wall of the bent tube 1 are fitted with annular heating element mounting bases 4.

[0067] The upper and lower sides of the right end of the ring-shaped heating element mounting base 4 on the outer wall of the horizontal tube 2 are fixedly connected with semi-circular heating elements 7, and the upper and lower semi-circular heating elements 7 are spliced ​​together to form a ring.

[0068] The right end of the semi-annular heating element 7 abuts against the left side of the adjacent annular heating element mounting base 4;

[0069] Half-bent heating elements 8 are fixedly connected to the upper and lower sides of the annular heating element mounting base 4 at both ends of the outer wall of the bent tube 1. The upper and lower half-bent heating elements 8 are spliced ​​together to form a bent tube shape.

[0070] The outer wall of the upper and lower half-bent heating element 8 is wrapped with a spliced ​​insulated bend 5;

[0071] The outer walls of the upper and lower semi-circular heating elements 7 are wrapped with spliced ​​insulated straight pipes 6.

[0072] Specifically in this embodiment, the oil pipeline is fixedly connected to the bend 1 between the two horizontal pipes 2 to facilitate the change of direction of the oil pipeline. A connecting flange 3 is provided to connect and fix the bend 1 and the horizontal pipe 2.

[0073] The high density of the annular heating element mounting bases 4 distributed on the outer wall of the horizontal tube 2 results in a large number of semi-annular heating elements 7 covering and fixing the entire horizontal tube 2.

[0074] Furthermore, a semi-circular heating element 7 is fixed on the annular heating element mounting base 4 arranged along the length of the outer wall of the horizontal pipe 2. The semi-circular heating element 7 covers the outer wall of the horizontal pipe 2. Each semi-circular heating element 7 is small in size and heats up when energized. There are a large number of semi-circular heating elements 7 covering the entire horizontal pipe 2, which can be replaced for damaged individual small semi-circular heating elements 7, making maintenance more convenient. A semi-bent pipe heating element 8 is fixed on the annular heating element mounting base 4 arranged along the length of the outer wall of the bend pipe 1. The semi-bent pipe heating element 8 covers the outer wall of the bend pipe 1. Each semi-bent pipe heating element 8 is small in size and heats up when energized. There are two semi-bent pipe heating elements 8 covering the entire bend pipe 1. The bend pipe 1 itself is relatively short, and the semi-bent pipe heating elements 8 on both sides can be replaced for damaged individual units, making maintenance more convenient.

[0075] More specifically, the outer wall of the semi-annular heating element 7 covering the entire horizontal pipe 2 is wrapped with a spliced ​​insulated straight pipe 6. The spliced ​​insulated straight pipe 6 can be divided into upper and lower parts to facilitate the maintenance of the internal semi-annular heating element 7. The spliced ​​insulated straight pipe 6 is used to wrap and insulate the semi-annular heating element 7 covering the entire horizontal pipe 2.

[0076] The outer wall of the half-bent heating element 8 covering the entire bend 1 is wrapped with a spliced ​​insulated bend 5. The spliced ​​insulated bend 5 can be separated into upper and lower parts to facilitate the maintenance of the internal half-bent heating element 8. The spliced ​​insulated bend 5 is used to wrap and insulate the half-bent heating element 8 covering the entire bend 1.

[0077] It is understood that the semi-annular heating element 7 and the semi-bent tube heating element 8 are fixed to the corresponding annular heating element mounting base 4 by bolts, which facilitates installation and disassembly; in other embodiments, a fixing method that facilitates disassembly, such as snap-fit ​​or magnetic adsorption, can be used.

[0078] In some embodiments, the annular heating element mounting base 4 includes:

[0079] An annular plate 41 is fixedly sleeved onto the outer wall of the bend 1 or the horizontal pipe 2;

[0080] The outer wall of the annular plate 41 is evenly provided with slots 42, and the bottom surface of the plate is provided with threaded holes 43.

[0081] The left end of the semi-annular heating element 7 is fixedly connected to the slot 42 of the adjacent annular plate 41;

[0082] The two ends of the semi-bent tube heating element 8 are fixedly connected to the slots 42 of the adjacent annular plate 41;

[0083] The semi-annular heating element 7 includes:

[0084] The semi-annular plate 71 has a first ear plate 72 fixedly connected to the slot 42 of the adjacent annular plate 41 at its left end.

[0085] The first ear plate 72 is inserted into the corresponding slot 42;

[0086] A first connecting bolt 73 passes through the outer wall of the first ear plate 72, and its end is screwed into the corresponding threaded hole 43.

[0087] The inner wall of the semi-annular plate 71 is uniformly embedded with the first heating wire 74, which is in contact with the outer wall of the horizontal tube 2.

[0088] The semi-bent tube heating element 8 includes:

[0089] The semi-bent tube 81 has a second ear plate 82 fixedly connected to the slots 42 of the adjacent annular plate 41 at both ends.

[0090] The second ear plate 82 is inserted into the corresponding slot 42;

[0091] A second connecting bolt 83 passes through the outer wall of the second ear plate 82, and its end is screwed into the corresponding threaded hole 43.

[0092] The inner wall of the semi-bent tube 81 is uniformly embedded with a second heating wire 84, which is in contact with the outer wall of the bent tube 1.

[0093] Specifically in this embodiment, the annular plate 41 is uniformly fixed to the outer wall of the bent pipe 1 or the horizontal pipe 2 along the length direction for fixing the semi-annular heating element 7 and the semi-bent pipe heating element 8.

[0094] Furthermore, the first ear plate 72 of the semi-annular plate 71 is inserted into the slot 42 of the adjacent annular plate 41, and the first connecting bolt 73 passes through the first ear plate 72 and is screwed into the threaded hole 43 on the bottom surface of the slot 42, thereby fixing the first ear plate 72 in the slot 42. The first heating wire 74 is connected to an external power source for heating, and the first heating wire 74 is in contact with the outer wall of the horizontal tube 2 for better heat transfer.

[0095] More specifically, the second ear plates 82 at both ends of the semi-bent tube 81 are inserted into the slots 42 of the adjacent annular plate 41. The second connecting bolts 83 pass through the second ear plates 82 and are screwed into the threaded holes 43 on the bottom surface of the slots 42, thereby fixing the second ear plates 82 in the slots 42. The second heating wire 84 is connected to an external power source for heating. The second heating wire 84 is in close contact with the outer wall of the bent tube 1 to better transfer heat.

[0096] In some embodiments, the spliced ​​insulated bend 5 includes:

[0097] Both the upper half bend 51 and the lower half bend 52 are fixedly fitted with first flanges 53 at both edges along their length.

[0098] The upper and lower corresponding first retaining edges 53 are fixedly connected to the first bolts and nuts 54 along the length direction;

[0099] The inner walls of the upper half-bend tube 51 and the lower half-bend tube 52 are in contact with the outer wall of the heating element 8 of the same half-bend tube.

[0100] Specifically in this embodiment, the first baffles 53 at the two sides of the upper half bend 51 and the lower half bend 52 along the length direction are attached to each other, and the first baffles 53 attached to each other are fixedly connected by the first bolts and nuts 54.

[0101] Furthermore, the first bolts and nuts 54 are evenly arranged along the length direction of the corresponding first retaining edges 53 to ensure connection stability.

[0102] In some embodiments, the spliced ​​insulated straight pipe 6 includes:

[0103] The upper half outer tube 61 and the lower half outer tube 62 are both fixedly fitted with second flanges 63 at both edges along the length direction;

[0104] The upper and lower corresponding second retaining edges 63 are fixedly connected to the second bolts and nuts 64 along the length direction;

[0105] The inner walls of the upper half outer tube 61 and the lower half outer tube 62 are in contact with the outer wall of the semi-annular heating element 7 on the same side.

[0106] Specifically in this embodiment, the second baffles 63 at the two sides of the upper half outer tube 61 and the lower half outer tube 62 along the length direction are attached to each other, and the upper and lower baffles 63 are fixedly connected by the second bolts and nuts 64.

[0107] Furthermore, the second bolts and nuts 64 are evenly arranged along the length direction of the corresponding upper and lower second retaining edges 63 to ensure connection stability.

[0108] In some embodiments, the spliced ​​insulated bend 5 and the spliced ​​insulated straight pipe 6 have the same structure;

[0109] The spliced ​​insulated bend 5 and the spliced ​​insulated straight pipe 6 are internally equipped with an insulation layer structure 9, which includes:

[0110] The inner wall of the heat-insulating outer layer 91 is in contact with the outer wall of the corresponding semi-bent tube heating element 8 and semi-circular heating element 7;

[0111] The outer wall of the thermal insulation outer layer 91 is coated with a protective outer layer 93;

[0112] The outer walls of the semi-bent tube heating element 8 and the semi-circular heating element 7 are electrically connected with cables along their length.

[0113] The bottom surface of the outer insulation layer 91 has a strip slot 92 corresponding to the cable;

[0114] The cable is plugged into the slot 92.

[0115] Specifically, in this embodiment, in order to achieve the insulation performance of the spliced ​​insulated bend 5 and the spliced ​​insulated straight pipe 6;

[0116] Furthermore, the outer insulation layer 91 is specifically a polyurethane foam layer, which serves as the main insulation material and is attached to the outer wall of the corresponding semi-bent tube heating element 8 and semi-circular heating element 7 to provide insulation and protection for both and reduce heat loss.

[0117] More specifically, the bottom surface of the insulation outer layer 91 has a strip-shaped slot 92 corresponding to the cable, which is used to store the cable.

[0118] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this utility model.

Claims

1. An oil pipeline with a heating mechanism, characterized in that, include: The elbow (1) has connecting flanges (3) fixedly installed on the outer walls of both ends; A horizontal pipe (2) is fixedly assembled on the outer end of the connecting flange (3); The outer wall of the horizontal tube (2) is uniformly fitted with an annular heating element mounting base (4) along the length direction, and both ends of the outer wall of the bent tube (1) are fitted with an annular heating element mounting base (4). The annular heating element mounting base (4) on the outer wall of the horizontal tube (2) is fixedly connected to the upper and lower sides of the right end of the annular heating element mounting base (4), and the upper and lower annular heating elements (7) are spliced ​​together to form an annular shape. The right end of the semi-annular heating element (7) abuts against the left side of the adjacent annular heating element mounting base (4); Half-bent heating elements (8) are fixedly connected to the upper and lower sides of the annular heating element mounting base (4) at both ends of the outer wall of the bent pipe (1), and the upper and lower half-bent heating elements (8) are spliced ​​together to form a bent pipe shape. The outer wall of the semi-bent heating element (8) is wrapped with a spliced ​​insulated bend (5); The outer wall of the semi-annular heating element (7) is wrapped with a spliced ​​insulated straight pipe (6).

2. An oil pipeline with a heating mechanism according to claim 1, characterized in that, The annular heating element mounting base (4) includes: An annular plate (41) is fixedly sleeved on the outer wall of the bent pipe (1) or the horizontal pipe (2); The outer wall of the annular plate (41) is uniformly provided with slots (42), and a threaded hole (43) is provided in the middle of its bottom surface. The left end of the semi-annular heating element (7) is fixedly connected to the slot (42) of the adjacent annular plate (41); The two ends of the semi-bent tube heating element (8) are fixedly connected to the slots (42) of the adjacent annular plate (41).

3. An oil pipeline with a heating mechanism according to claim 2, characterized in that, The semi-annular heating element (7) includes: A semi-annular plate (71) has a first ear plate (72) fixedly connected to its left end in a slot (42) corresponding to the adjacent annular plate (41). The first ear plate (72) is inserted into the corresponding slot (42); The outer wall of the first ear plate (72) is penetrated by a first connecting bolt (73), the end of which is screwed into the corresponding threaded hole (43); The inner wall of the semi-annular plate (71) is uniformly embedded with a first heating wire (74), which is in contact with the outer wall of the horizontal tube (2).

4. An oil pipeline with a heating mechanism according to claim 2, characterized in that, The semi-bent tube heating element (8) includes: The two ends of the semi-bent tube (81) are respectively fixedly connected to the slots (42) of the adjacent annular plate (41); The second ear plate (82) is inserted into the corresponding slot (42); The outer wall of the second ear plate (82) is penetrated by a second connecting bolt (83), the end of which is screwed into the corresponding threaded hole (43); The inner wall of the semi-bent tube (81) is uniformly embedded with a second heating wire (84), which is in contact with the outer wall of the bent tube (1).

5. An oil pipeline with a heating mechanism according to claim 1, characterized in that, The spliced ​​insulated bend (5) includes: Both the upper half bend (51) and the lower half bend (52) are fixedly fitted with first flanges (53) at both edges along their length. The first bolt and nut (54) are fixedly connected along the length direction to the first stop (53) at the top and bottom respectively; The inner walls of the upper half-bend (51) and the lower half-bend (52) are in contact with the outer wall of the heating element (8) of the half-bend on the same side.

6. An oil pipeline with a heating mechanism according to claim 1, characterized in that, The spliced ​​insulated straight pipe (6) includes: The upper half outer tube (61) and the lower half outer tube (62) are both fixedly fitted with second flanges (63) at both edges along the length direction. The upper and lower corresponding second flanges (63) are fixedly connected with second bolts and nuts (64) along the length direction; The inner walls of the upper half outer tube (61) and the lower half outer tube (62) are in contact with the outer wall of the semi-annular heating element (7) on the same side.

7. An oil pipeline with a heating mechanism according to claim 1, characterized in that, The spliced ​​insulated bend (5) and the spliced ​​insulated straight pipe (6) have the same structure; The spliced ​​insulated bend (5) and spliced ​​insulated straight pipe (6) are internally provided with an insulation layer structure (9), which includes: The inner wall of the heat-insulating outer layer (91) is in contact with the outer wall of the corresponding semi-bent tube heating element (8) and semi-circular heating element (7).

8. An oil pipeline with a heating mechanism according to claim 7, characterized in that, The outer wall of the thermal insulation outer layer (91) is coated with a protective outer layer (93).

9. An oil pipeline with a heating mechanism according to claim 7, characterized in that, The outer walls of the semi-bent tube heating element (8) and the semi-circular heating element (7) are electrically connected with cables along the length direction; The bottom surface of the thermal insulation outer layer (91) is provided with a strip slot (92) corresponding to the cable; The cable is inserted into the strip slot (92).

10. An oil pipeline with a heating mechanism according to claim 9, characterized in that, The thermal insulation outer layer (91) is specifically a polyurethane foam layer.

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