Composite type anti-corrosion heat preservation structure of petroleum and natural gas pipeline

Abstract

The utility model discloses a composite type anti-corrosion heat preservation structure of a petroleum and natural gas pipeline. The composite type anti-corrosion heat preservation structure comprises a petroleum and natural gas pipeline body and a flange plate. The flange plate is fixed at the front end of the petroleum and natural gas pipeline body; an inner groove is formed in the petroleum and natural gas pipeline body, and a replaceable filling net is arranged in the inner groove. An adjusting groove is formed in the top end of the flange plate, an adjusting block is slidably connected into the adjusting groove, a pull rod is fixedly connected to the top end of the adjusting block, and an inserting rod is fixedly connected to the bottom of the adjusting block; inserting holes matched with the inserting rods are formed in the top end of the filling net; and the pull rod is lifted to drive the adjusting block to slide, so that the inserting rod is separated from the inserting hole, the limiting of the filling net is relieved, and the filling net is pulled out of the inner groove. According to the heat preservation structure, filling materials can be selected according to different working conditions, and the applicability of the pipeline in a complex environment is improved.

Description

Technical Field

[0001] This utility model relates to the field of oil and gas pipeline technology, and in particular to a composite anti-corrosion and heat-insulating structure for oil and gas pipelines. Background Technology

[0002] Oil and gas pipelines are core infrastructure for energy transportation and are widely used for long-distance transportation of crude oil, refined oil and natural gas. Traditional pipeline systems typically use carbon steel or alloy steel pipes.

[0003] Traditional oil and gas pipelines are mostly made of a single metal material. Although carbon steel has high strength and a certain degree of toughness, its corrosion resistance is relatively poor. In media such as soil and water, carbon steel pipelines are prone to electrochemical corrosion. In particular, when the soil contains electrolytes, the corrosion process is accelerated, leading to pipeline corrosion, pitting corrosion, pitting corrosion, or even perforation, which seriously affects the service life and safety of the pipeline. Utility Model Content

[0004] To solve the above-mentioned technical problems, the purpose of this utility model is to provide a composite anti-corrosion and heat-insulating structure for oil and gas pipelines. The specific technical solution is as follows:

[0005] A composite corrosion-resistant and heat-insulating structure for an oil and gas pipeline includes an oil and gas pipeline body and a flange; the flange is fixed to the front end of the oil and gas pipeline body.

[0006] The oil and gas pipeline body has an inner groove inside, and the inner groove is equipped with a replaceable filling mesh.

[0007] The flange has an adjustment groove at its top, an adjustment block is slidably connected inside the adjustment groove, a pull rod is fixedly connected to the top of the adjustment block, and a plug rod is fixedly connected to the bottom of the adjustment block.

[0008] The top of the filling mesh has an insertion hole that matches the insertion rod; by lifting the pull rod, the adjusting block is slid, causing the insertion rod to disengage from the insertion hole, thereby releasing the limiting position of the filling mesh and realizing its replacement from the inner groove.

[0009] The preferred embodiment of the composite anti-corrosion and heat insulation structure for oil and gas pipelines is that a storage spring is fixedly connected to the top of the adjusting block, and the storage spring is sleeved on the pull rod.

[0010] The top end of the storage spring is fixedly connected to the top end inside the adjustment groove; the storage spring is used to drive the insertion rod to reset and insert into the insertion hole when the pull rod is released.

[0011] In a preferred embodiment of the composite corrosion-resistant and heat-insulating structure for an oil and gas pipeline, the adjusting groove has sliding grooves on both sides, and the adjusting block has sliders fixedly connected to both sides that slide in cooperation with the sliding grooves. The cooperation between the sliders and the sliding grooves limits the sliding trajectory of the adjusting block.

[0012] In a preferred embodiment of the composite corrosion-resistant and heat-insulating structure for oil and gas pipelines, sliding grooves are provided on both sides of the inner groove, and sliding blocks are fixedly connected to both sides of the filling mesh. The sliding blocks slide in cooperation with the sliding grooves to guide the replacement direction of the filling mesh.

[0013] The preferred embodiment of the composite anti-corrosion and heat insulation structure for an oil and gas pipeline is that the outer surface of the oil and gas pipeline body is covered with an epoxy resin coating, the thickness of which is 0.5mm-2mm, to enhance the anti-corrosion performance of the pipeline exterior.

[0014] The preferred embodiment of the composite anti-corrosion and heat-insulating structure for an oil and gas pipeline is that the inner wall of the oil and gas pipeline body is provided with an alloy layer, the composition of which is a nickel-based alloy or a titanium alloy, to resist the erosion of corrosive media inside the pipeline.

[0015] The preferred embodiment of the composite anti-corrosion and heat-insulating structure for oil and gas pipelines is that the filling mesh is a porous mesh structure filled with anti-corrosion and heat-insulating material, which includes polyurethane foam or aluminum silicate fiber composite material.

[0016] The preferred embodiment of the composite anti-corrosion and heat-insulating structure for an oil and gas pipeline is that the thickness of the alloy layer is 1mm-3mm, and it is bonded to the inner wall of the oil and gas pipeline body through a thermal spraying process.

[0017] The working principle of a composite anti-corrosion and heat-insulating structure for oil and gas pipelines: Workers lift a pull rod upwards, causing the pull rod to move an adjusting block. The adjusting block releases the limiting position between the insert rod and the insertion hole, simultaneously releasing the limiting position of the filling mesh 4. Workers can then pull the filling mesh out of the inner groove to allow for the addition or replacement of anti-corrosion and heat-insulating filler. The insert rod's size is matched to the insertion hole's size, ensuring the insert rod can be securely inserted into the hole without shaking or falling out, thus guaranteeing the stability and reliability of the overall structure. When the operator lifts the pull rod 7, the pull rod compresses the storage spring to store force, which in turn releases the limiting position between the insert rod and the insertion hole, facilitating the operator's release of the limiting position on the filling mesh. When the operator needs to fix the filling mesh, the insert rod is aligned with the insertion hole and the pull rod is released. Under the rebound force of the storage spring, the operator pushes the adjusting block, causing the insert rod to be inserted into the insertion hole for fixation. When the operator moves the adjusting block, the adjusting block causes the slider to slide inside the groove. Through the above settings, the adjusting block is more stable during movement, avoiding wobbling. The design minimizes errors, improving the precision and reliability of the equipment. Simultaneously, the sliding connection between the slider and the groove facilitates smooth adjustment and operation of the adjusting block, enhancing work efficiency. When the operator moves the insertion port, the port drives the slider block to slide within the groove. This design ensures smoother movement of the insertion port, effectively reducing deviations caused by improper operation and further enhancing the stability and accuracy of the equipment. The epoxy resin coating on the surface of the oil and gas pipeline provides excellent corrosion resistance. The epoxy resin coating exhibits good chemical corrosion resistance and weather resistance, effectively resisting erosion from external factors such as soil, moisture, chemicals, and microorganisms, thus extending the pipeline's service life. The alloy layer on the inner wall of the oil and gas pipeline further enhances its corrosion resistance. Composed of various metallic elements, the alloy layer possesses high strength, high hardness, and excellent corrosion resistance, effectively resisting corrosive media in oil and gas, such as hydrogen sulfide and carbon dioxide, thereby protecting the inner wall of the pipeline from corrosion.

[0018] Beneficial effects

[0019] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0020] This invention's technical solution involves lifting a pull rod upwards, causing it to move an adjusting block. The adjusting block then releases the limiting position between the insert rod and the insertion hole, simultaneously releasing the limiting position of the filling mesh. The design of the filling mesh allows for easy addition or replacement of anti-corrosion and heat-insulating filler via the pull rod operation, reducing maintenance costs. The coordinated design of the slide, slider, and spring ensures smooth operation of the adjusting mechanism and prevents misoperation. This insulation structure allows for selection of filling materials according to different working conditions, improving the pipeline's applicability in complex environments. The epoxy resin coating and alloy layer added to the inner and outer walls of the pipeline body form double protection, significantly extending the pipeline's lifespan. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of a composite corrosion-resistant and heat-insulating structure for an oil and gas pipeline.

[0022] Figure 2 A partial cross-sectional view of a flange of a composite corrosion-resistant and heat-insulating structure for oil and gas pipelines;

[0023] Figure 3 A schematic diagram of a partial explosion structure of a composite anti-corrosion and heat-insulating structure for oil and gas pipelines;

[0024] Figure 4 This is a schematic diagram of a partial cross-sectional view of the flange.

[0025] Figure 5 This is a schematic diagram showing the exploded structure of the oil and gas pipeline body, epoxy resin coating, and alloy layer.

[0026] In the diagram: 1. Oil and gas pipeline body; 2. Flange; 3. Inner groove; 4. Filler mesh; 5. Adjusting groove; 6. Adjusting block; 7. Tie rod; 8. Insert rod; 9. Insertion hole; 10. Storage spring; 11. Slide groove; 12. Slider; 13. Sliding groove; 14. Sliding block; 15. Epoxy resin coating; 16. Alloy layer. Detailed Implementation

[0027] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain this utility model, and should not be construed as limiting this utility model.

[0028] like Figure 1-5 As shown, a composite anti-corrosion and heat-insulating structure for an oil and gas pipeline includes an oil and gas pipeline body 1 and a flange 2; the flange 2 is fixed to the front end of the oil and gas pipeline body 1.

[0029] The oil and gas pipeline body 1 has an inner groove 3 inside, and the inner groove 3 is equipped with a replaceable filling mesh 4.

[0030] The flange 2 has an adjustment groove 5 at its top, and an adjustment block 6 is slidably connected inside the adjustment groove 5. A pull rod 7 is fixedly connected to the top of the adjustment block 6, and an insertion rod 8 is fixedly connected to the bottom of the adjustment block 6.

[0031] The top of the filling mesh 4 is provided with an insertion hole 9 that is adapted to the insertion rod 8; by lifting the pull rod 7 to drive the adjusting block 6 to slide, the insertion rod 8 is disengaged from the insertion hole 9, so as to release the limitation of the filling mesh 4 and realize its replacement from the inner groove 3.

[0032] The top end of the adjusting block 6 is fixedly connected to a storage spring 10, and the storage spring 10 is sleeved on the pull rod 7;

[0033] The top end of the energy storage spring 10 is fixedly connected to the top end inside the adjustment groove 5; the energy storage spring 10 is used to drive the insertion rod 8 to reset and insert into the insertion hole 9 when the pull rod 7 is released.

[0034] The adjustment groove 5 has sliding grooves 11 on both sides. The adjustment block 6 has sliders 12 fixedly connected to both sides, which slide in cooperation with the sliding grooves 11. The cooperation between the sliders 12 and the sliding grooves 11 limits the sliding trajectory of the adjustment block 6.

[0035] The inner groove 3 has sliding grooves 13 on both sides, and the filling mesh 4 is fixedly connected to both sides with sliding blocks 14. The sliding blocks 14 slide with the sliding grooves 13 to guide the replacement direction of the filling mesh 4.

[0036] The outer surface of the oil and gas pipeline body 1 is covered with an epoxy resin coating 15, the thickness of which is 0.5mm-2mm, to enhance the corrosion resistance of the pipeline exterior.

[0037] The inner wall of the oil and gas pipeline body 1 is provided with an alloy layer 16, which is composed of nickel-based alloy or titanium alloy, and is used to resist the erosion of corrosive media inside the pipeline.

[0038] The filling mesh 4 has a porous mesh structure and is filled with anti-corrosion and heat-insulating material, including polyurethane foam or aluminum silicate fiber composite material.

[0039] The alloy layer 16 has a thickness of 1mm-3mm and is bonded to the inner wall of the oil and gas pipeline body 1 by a thermal spraying process.

[0040] The working principle of a composite anti-corrosion and heat-insulating structure for oil and gas pipelines: Workers lift the pull rod 7 upwards, causing the pull rod 7 to move the adjusting block 6. The adjusting block 6 then releases the limiting position between the insertion rod 8 and the insertion hole 9, simultaneously releasing the limiting position of the filling mesh 4. Workers can then pull the filling mesh 4 out of the inner groove 3 to allow for the addition or replacement of anti-corrosion and heat-insulating filler. The matching size of the insertion rod 8 with the insertion hole 9 ensures that the insertion rod 8 can be securely inserted into the insertion hole 9, preventing shaking or detachment, thus guaranteeing the stability and reliability of the overall structure. When the operator lifts the lever 7, the lever 7 compresses the storage spring 10 to store force, and drives the insertion rod 8 to release the limit between itself and the insertion hole 9, facilitating the operator to release the limit on the filling mesh 4. When the operator needs to fix the filling mesh 4, the insertion rod 8 is aligned with the insertion hole 9 and the lever 7 is released. Under the action of the rebound force of the storage spring 10, the operator pushes the adjusting block 6 to drive the insertion rod 8 into the insertion hole 9 for fixing. When the operator moves the adjusting block 6, the adjusting block 6 drives the slider 12 to slide inside the slide groove 11. Through the above settings, the adjusting block 6 is more stable during movement, avoiding [further issues]. The error caused by shaking is reduced, improving the accuracy and reliability of the equipment. Simultaneously, the sliding connection design between the slider 12 and the slide groove 11 facilitates smooth adjustment and operation of the adjusting block 6 by the operator, improving work efficiency. When the operator moves the insertion hole 9, the insertion hole 9 drives the slider 14 to slide inside the slide groove 13. Through the above design, the insertion hole 9 moves more smoothly, effectively reducing deviation caused by improper operation, further enhancing the stability and accuracy of the equipment. The epoxy resin coating 15 on the surface of the oil and gas pipeline body 1 further improves the stability and accuracy of the equipment. The gas pipeline body possesses excellent corrosion resistance. The epoxy resin coating 15 has good chemical corrosion resistance and weather resistance, effectively resisting the erosion of the pipeline by external factors such as soil, moisture, chemicals, and microorganisms, thereby extending the service life of the pipeline. The presence of an alloy layer 16 on the inner wall of the oil and gas pipeline body 1 further enhances the pipeline's corrosion resistance. The alloy layer 16 is composed of various metallic elements and has high strength, high hardness, and excellent corrosion resistance, effectively resisting corrosive media in oil and gas, such as hydrogen sulfide and carbon dioxide, thereby protecting the inner wall of the pipeline from corrosion.

[0041] The above description is merely an embodiment of this utility model, and common knowledge regarding specific structures and characteristics is not described in detail here. It will be apparent to those skilled in the art that this utility model is not limited to the details of the above exemplary embodiments, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this utility model. Therefore, the embodiments should be considered exemplary and non-limiting in all respects, and the scope of this utility model is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this utility model. No reference numerals in the claims should be construed as limiting the scope of the claims.

Claims

1. A composite corrosion-resistant and heat-insulating structure for oil and gas pipelines, characterized in that: It includes an oil and gas pipeline body (1) and a flange (2); the flange (2) is fixed to the front end of the oil and gas pipeline body (1); The oil and gas pipeline body (1) has an inner groove (3) inside, and the inner groove (3) is provided with a replaceable filling mesh (4); The flange (2) has an adjustment groove (5) at its top, and an adjustment block (6) is slidably connected inside the adjustment groove (5). A pull rod (7) is fixedly connected to the top of the adjustment block (6), and an insertion rod (8) is fixedly connected to the bottom of the adjustment block (6). The top of the filling mesh (4) is provided with a socket (9) that is compatible with the insertion rod (8); by lifting the pull rod (7) to drive the adjusting block (6) to slide, the insertion rod (8) is disengaged from the socket (9), so as to release the limitation of the filling mesh (4) and realize its replacement from the inner groove (3).

2. The composite corrosion-resistant and heat-insulating structure for oil and gas pipelines according to claim 1, characterized in that: The top of the adjusting block (6) is fixedly connected to a storage spring (10), and the storage spring (10) is sleeved on the pull rod (7); The top end of the energy storage spring (10) is fixedly connected to the top end inside the adjustment groove (5); the energy storage spring (10) is used to drive the insertion rod (8) to reset and insert into the insertion hole (9) when the pull rod (7) is released.

3. The composite corrosion-resistant and heat-insulating structure for oil and gas pipelines according to claim 1, characterized in that: The adjustment groove (5) has sliding grooves (11) on both sides. The adjustment block (6) has sliders (12) that slide in cooperation with the sliding grooves (11) on both sides. The cooperation between the sliders (12) and the sliding grooves (11) limits the sliding trajectory of the adjustment block (6).

4. The composite corrosion-resistant and heat-insulating structure for oil and gas pipelines according to claim 1, characterized in that: The inner groove (3) has sliding grooves (13) on both sides. The filling mesh (4) is fixedly connected to sliding blocks (14) on both sides. The sliding blocks (14) slide with the sliding grooves (13) to guide the replacement direction of the filling mesh (4).

5. The composite corrosion-resistant and heat-insulating structure for oil and gas pipelines according to claim 1, characterized in that: The outer surface of the oil and gas pipeline body (1) is covered with an epoxy resin coating (15), the thickness of which is 0.5mm-2mm, to enhance the corrosion resistance of the pipeline exterior.

6. The composite corrosion-resistant and heat-insulating structure for oil and gas pipelines according to claim 1, characterized in that: The inner wall of the oil and gas pipeline body (1) is provided with an alloy layer (16), which is composed of nickel-based alloy or titanium alloy and is used to resist the erosion of corrosive media inside the pipeline.

7. The composite corrosion-resistant and heat-insulating structure for oil and gas pipelines according to claim 1, characterized in that: The filling mesh (4) is a porous mesh structure, and its interior is filled with anti-corrosion and heat-insulating materials, including polyurethane foam or aluminum silicate fiber composite materials.

8. A composite corrosion-resistant and heat-insulating structure for oil and gas pipelines according to claim 6, characterized in that: The alloy layer (16) has a thickness of 1mm-3mm and is bonded to the inner wall of the oil and gas pipeline body (1) by a thermal spraying process.

Images