Corrosion protection structure for underground oil pipelines at gas stations

Abstract

This utility model discloses an anti-corrosion protection structure for underground oil pipelines in gas stations. It relates to the field of oil pipeline protection technology and includes a main structure comprising a first pipeline and a second pipeline. Both pipelines are equipped with adjustment components, each including an upper connector and a lower connector. Two sets of upper and lower connectors are provided; one set has an inner cylinder, and the other set has an outer cylinder. The advantages of this utility model are: the inner and outer cylinders in the adjustment components achieve a sliding connection through the cooperation of a locking block and a sliding groove, which can meet the 0-300mm length variation requirements of the pipeline due to temperature changes, foundation settlement, etc., avoiding damage caused by stress due to length changes and improving the applicability of the structure.

Description

Technical Field

[0001] This utility model relates to the field of oil pipeline protection technology, specifically to an anti-corrosion protection structure for underground oil pipelines at gas stations. Background Technology

[0002] Gas station underground oil pipelines, buried in the soil for extended periods, face multiple corrosion threats: moisture and salt in the soil create an electrochemical corrosion environment, microbial metabolic products trigger biological corrosion, and vibrations from vehicle traffic exacerbate wear on the anti-corrosion layer. The applicant discovered a Chinese patent, CN107353743A, which discloses an anti-corrosion S-shaped pipe. This patent primarily uses a structure at the front end of the oil pipeline to deposit barium and strontium scale, significantly reducing scaling and risks and extending the pipeline's lifespan. However, this structure cannot achieve a sealed connection between two pipelines and cannot meet the requirements of pipeline length changes due to temperature variations and ground settlement, thus limiting its applicability. Therefore, we propose an anti-corrosion protection structure for underground oil pipelines in gas stations. Utility Model Content

[0003] The purpose of this utility model is to provide a corrosion protection structure for underground oil pipelines in gas stations.

[0004] To achieve the above objectives, this utility model provides the following technical solution: a corrosion protection structure for underground oil pipelines in gas stations, comprising a main structure, the main structure including a first pipeline and a second pipeline, both of which are equipped with adjustment components, each adjustment component including an upper connector and a lower connector, the upper connector and the lower connector being provided in two sets, one set of which is equipped with an inner cylinder, and the other set of which is equipped with an outer cylinder, the outer cylinder having a sliding groove inside, and a locking block connected to one end of the inner cylinder, the locking block being slidably connected inside the sliding groove of the outer cylinder, and each of the four outer cylinders being equipped with a connecting block, with flange one and flange two connecting between each pair of connecting blocks.

[0005] As a further embodiment of this utility model: both the first pipe and the second pipe are provided with anti-corrosion structures, the anti-corrosion structures including a base treatment layer.

[0006] As a further embodiment of this utility model: a sacrificial anode anti-corrosion layer is provided on the outer side of the base treatment layer, and a buffer isolation layer is provided on the outer side of the sacrificial anode anti-corrosion layer.

[0007] As a further embodiment of this utility model: a mechanical protective layer is provided on the outside of the buffer isolation layer, and a warning label layer is provided on the outside of the mechanical protective layer.

[0008] As a further embodiment of this utility model: a fastening plate 2 is provided between flange 1 and flange 2, and a fastening plate 1 is provided on both the upper connecting member and the lower connecting member.

[0009] As a further embodiment of this utility model: bolts are provided between the two fastening plates one and fastening plate two.

[0010] As a further embodiment of this utility model: both the upper connector and the lower connector are provided with support columns at their bottoms, and the bottom surface of the support columns is provided with a base plate.

[0011] Compared with the prior art, the beneficial effects of this utility model by adopting the above technical solution are as follows:

[0012] 1. This utility model achieves a sliding connection between the inner and outer cylinders in the adjustment component through the cooperation of the locking block and the sliding groove. It can meet the 0-300mm length change requirements of the pipeline due to temperature changes, foundation settlement, etc., avoid damage caused by stress due to the length change of the pipeline, and improve the applicability of the structure.

[0013] 2. This utility model ensures the sealing and stability of the connection between the two pipelines through multiple fixings of the upper connector, lower connector, flange one, and flange two, effectively preventing media leakage and ensuring the safe operation of the oil pipeline.

[0014] Other advantages, objectives and features of this invention will be set forth in part in the description which follows, and in part will be apparent to those skilled in the art from the following examination or study, or may be taught from the practice of this invention. Attached Figure Description

[0015] Figure 1 This is a first perspective view of an embodiment of the present utility model;

[0016] Figure 2 This is a second perspective view of an embodiment of the present utility model;

[0017] Figure 3 This is a first perspective view of the adjustment component in an embodiment of the present utility model;

[0018] Figure 4 This is a second perspective view of the adjustment component in an embodiment of the present invention;

[0019] Figure 5 for Figure 4 Schematic diagram at point A in the middle.

[0020] In the diagram: 1. Main structure; 2. Pipeline 1; 3. Pipeline 2; 4. Anti-corrosion structure; 41. Base treatment layer; 42. Sacrificial anode anti-corrosion layer; 43. Buffer isolation layer; 44. Mechanical protection layer; 45. Warning sign layer; 5. Adjustment component; 51. Upper connector; 52. Lower connector; 53. Fastening plate 1; 54. Bolt; 55. Inner cylinder; 551. Clamping block; 56. Outer cylinder; 57. Connecting block; 58. Flange 1; 59. Flange 2; 60. Fastening plate 2; 7. Support column. Detailed Implementation

[0021] The specific embodiments of this utility model will be further described below with reference to the accompanying drawings. It should be noted that the description of these embodiments is for the purpose of helping to understand this utility model, but does not constitute a limitation on this utility model.

[0022] Furthermore, the technical features involved in the various embodiments of this utility model described below can be combined with each other as long as they do not conflict with each other.

[0023] Gas station underground oil pipelines, buried in the soil for extended periods, face multiple severe corrosion threats: soil moisture and salt create a continuous electrochemical corrosion environment; acidic substances produced by microbial metabolism accelerate pipeline corrosion; and vibrations from vehicle traffic and soil subsidence exacerbate the wear and peeling of the anti-corrosion layer. Current technologies only focus on scale prevention, failing to address the sealing and corrosion protection of pipeline connections. Furthermore, they cannot cope with the need for pipeline length expansion and contraction due to temperature changes and foundation settlement, leading to leaks at connections and limiting the overall applicability of protection. Therefore, please refer to the appendix... Figure 1 - Appendix Figure 5 This utility model discloses an anti-corrosion protection structure for underground oil pipelines in gas stations, comprising a main structure 1, which includes a first pipe 2 and a second pipe 3. Both the first pipe 2 and the second pipe 3 are equipped with adjustment components 5, each including an upper connector 51 and a lower connector 52. Two sets of upper and lower connectors 51 and 52 are provided. One set of upper and lower connectors 51 and 52 has an inner cylinder 55, while the other set has an outer cylinder 56. The outer cylinder 56 has a sliding groove inside. One end of the inner cylinder 55 is connected to a locking block 551, which slidably connects to the sliding groove of the outer cylinder 56. Each of the four outer cylinders 56 has a connecting block 57, and flanges 1 and 2 are connected between each pair of connecting blocks 57.

[0024] In Example 1, anti-corrosion structure 4 is provided on pipe 1 2 and pipe 2 3. The anti-corrosion structure 4 includes a base treatment layer 41, a sacrificial anode anti-corrosion layer 42 is provided on the outside of the base treatment layer 41, a buffer isolation layer 43 is provided on the outside of the sacrificial anode anti-corrosion layer 42, a mechanical protection layer 44 is provided on the outside of the buffer isolation layer 43, and a warning label layer 45 is provided on the outside of the mechanical protection layer 44.

[0025] Specifically, through the synergistic effect of the multi-layer anti-corrosion structure 4, the base treatment layer 41 enhances the adhesion to subsequent coatings, the sacrificial anode anti-corrosion layer 42 provides electrochemical protection, the buffer isolation layer 43 reduces stress damage, and the mechanical protection layer 44 resists external impacts, thereby extending the anti-corrosion life of the pipeline and significantly reducing the risk of pipeline leakage due to corrosion.

[0026] In Example 2, fastening plates 60 are provided between flange 1 58 and flange 2 59, fastening plates 53 are provided on upper connector 51 and lower connector 52, bolts 54 are provided between the two fastening plates 53 and fastening plates 60, and support columns 7 are provided at the bottom of upper connector 51 and lower connector 52, with a base plate on the bottom surface of the support column 7.

[0027] Specifically, by adjusting the inner cylinder 55 and outer cylinder 56 in component 5 to achieve sliding connection through the cooperation of the locking block 551 and the sliding groove, the length change requirements of the pipeline due to temperature changes, foundation settlement, etc. can be met, avoiding damage caused by stress due to length changes of the pipeline and improving the applicability of the structure.

[0028] Specifically, the sealing and stability of the connection between the two pipelines are ensured by multiple fixings of the upper connector 51, the lower connector 52, flange one 58, and flange two 59, which effectively prevents media leakage and ensures the safe operation of the oil pipeline.

[0029] Specifically, firstly, pipes 1-2 and 2-3 are pretreated by sandblasting to remove rust to Sa2.5 grade. Then, a silane coupling agent is sprayed to form a base treatment layer 41, which is allowed to dry and cure. Zinc-aluminum alloy mesh is spot-welded onto the surface of the base treatment layer 41. Then, graphene-modified epoxy resin is sprayed to form a sacrificial anode anti-corrosion layer 42. After the anti-corrosion layer has cured, closed-cell polyethylene foam is wrapped as a buffer isolation layer 43. The joints are sealed with hot melt adhesive. Next, fiberglass cloth is wrapped and resin is applied to form a mechanical protection layer 44, which is cured at room temperature. Finally, fluorescent warning tape is pasted on the outer surface of the mechanical protection layer 44 and tracer is injected to form a warning label layer 45.

[0030] Working principle:

[0031] First, during installation, install the upper connector 51 and the lower connector 52 at the connection ends of pipe 1 (2) and pipe 2 (3) respectively, and secure them with fastening plate 1 (53) and bolts 54. Connect the inner cylinder 55 and the outer cylinder 56 to the corresponding upper connector 51 and lower connector 52 respectively, ensuring that the locking block 551 slides into the groove of the outer cylinder 56. Connect flange 1 (58) and flange 2 (59) through connecting block 57, install fastening plate 2 (60) and tighten bolts 54. Install the support column 7 at the bottom of the adjusting assembly 5 and fix the base plate to the ground to ensure structural stability. When the pipeline experiences temperature changes or foundation settlement... When the length changes, the inner cylinder 55 slides in the groove of the outer cylinder 56 through the locking block 551, realizing the extension and contraction adjustment of the pipe length, avoiding excessive stress on the pipe. The synergistic effect of each layer of the anti-corrosion structure 4 provides all-round anti-corrosion protection for the pipe, preventing damage to pipe 2 and pipe 3 caused by soil corrosion and other factors. Flange 58, flange 59 and various fastening components ensure the sealing of the pipe connection and prevent media leakage. The support column 7 enhances the stability of the overall structure and ensures the safe operation of the pipeline in various environments. At this point, the entire process is completed.

[0032] The terms "front," "back," "left," "right," "top," and "bottom" all refer to the figures in the accompanying drawings. Figure 1 Based on.

[0033] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "lateral", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limiting the scope of protection of this utility model.

[0034] The embodiments of the present invention have been described in detail above with reference to the accompanying drawings, but the present invention is not limited to the described embodiments.

[0035] For those skilled in the art, various changes, modifications, substitutions, and alterations to these embodiments without departing from the principles and spirit of this utility model will still fall within the protection scope of this utility model.

Claims

1. A corrosion protection structure for underground fuel pipelines at a gas station, comprising a main structure (1), characterized in that: The main structure (1) includes pipe one (2) and pipe two (3). Both pipe one (2) and pipe two (3) are provided with adjustment components (5). The adjustment components (5) include an upper connector (51) and a lower connector (52). There are two sets of upper connectors (51) and lower connectors (52). One set of upper connectors (51) and lower connectors (52) is provided with an inner cylinder (55), and the other set of upper connectors (51) and lower connectors (52) is provided with an outer cylinder (56). The outer cylinder (56) has a sliding groove inside. One end of the inner cylinder (55) is connected to a locking block (551). The locking block (551) is slidably connected inside the sliding groove of the outer cylinder (56). Each of the four outer cylinders (56) is provided with a connecting block (57). Flange one (58) and flange two (59) are connected between each pair of connecting blocks (57).

2. The fueling station underground fuel line corrosion protection structure of claim 1, wherein: Both the first pipe (2) and the second pipe (3) are provided with anti-corrosion structures (4), and the anti-corrosion structures (4) include a base treatment layer (41).

3. The underground fueling station piping corrosion protection structure of claim 2, wherein: A sacrificial anode anti-corrosion layer (42) is provided on the outside of the base treatment layer (41), and a buffer isolation layer (43) is provided on the outside of the sacrificial anode anti-corrosion layer (42).

4. The underground fueling station piping corrosion protection structure of claim 3, wherein: A mechanical protective layer (44) is provided on the outside of the buffer isolation layer (43), and a warning label layer (45) is provided on the outside of the mechanical protective layer (44).

5. The underground fueling station piping corrosion protection structure of claim 1, wherein: Fastening plate 2 (60) is provided between flange 1 (58) and flange 2 (59), and fastening plate 1 (53) is provided on upper connector (51) and lower connector (52).

6. The fueling station underground fuel line corrosion protection structure of claim 5, wherein: Bolts (54) are provided between the two fastening plates one (53) and fastening plate two (60).

7. The underground fueling station piping corrosion protection structure of claim 5, wherein: The bottom of both the upper connector (51) and the lower connector (52) is provided with a support column (7), and the bottom surface of the support column (7) is provided with a base plate.

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