Lining anti-corrosion oil pipeline for wharf

Abstract

The utility model relates to a wharf lining anti-corrosion oil pipeline which comprises pipeline bodies, lining pipes are arranged on the inner walls of the pipeline bodies, outer anti-corrosion layers are arranged on the outer walls of the pipeline bodies, a connecting assembly is arranged between every two adjacent pipeline bodies, and each connecting assembly comprises a hot melting connecting sleeve, a steel sleeve upper part, a steel sleeve lower part, a first flange and a second flange. Grooves are correspondingly formed in the two sides of the hot melting connecting sleeve, the pipeline body and the lining pipe are inserted into the grooves and connected with the hot melting connecting sleeve into a whole in a hot melting mode, and the upper portion of the steel sleeve and the lower portion of the steel sleeve are correspondingly clamped on the outer side of the hot melting connecting sleeve in a sleeved mode and make close contact with the outer side of the pipeline body. And a fixing assembly is arranged between the steel sleeve upper part and the steel sleeve lower part. Two groups of pipelines can be effectively connected, the sealing performance and the corrosion resistance of the pipeline joint are improved, the strength of the pipeline at the joint is improved, and the deformation probability of the pipeline at the joint is reduced.

Description

Technical Field

[0001] This utility model relates to the field of anti-corrosion pipeline technology, and in particular to an anti-corrosion oil pipeline with inner lining for docks. Background Technology

[0002] The complex environment of a dock, characterized by high humidity and oil corrosion, can affect the service life of pipelines and their connections. Anti-corrosion treatment is typically applied to these pipelines and connections to extend their lifespan. There are two common practices: one involves installing internal linings or internal anti-corrosion treatment, but this often results in insufficient external anti-corrosion protection, making it ill-suited to the high humidity and complex environment of a dock, leading to a short service life and difficulty in maintenance; the other involves external anti-corrosion treatment, with connections made solely by flanges and bolts. This approach lacks adequate internal treatment, making the pipeline susceptible to oil corrosion and prone to leaks due to incomplete sealing at the connections. Furthermore, simply applying external or internal anti-corrosion treatment cannot adequately protect against both oil and external environmental corrosion, further shortening the pipeline's lifespan. Summary of the Invention

[0003] This utility model aims to address the shortcomings of existing technologies by providing a corrosion-resistant oil pipeline with an inner lining for use at docks.

[0004] To achieve the above objectives, this utility model adopts the following technical solution: a lining anti-corrosion oil pipeline for docks, comprising a pipeline body, an inner lining pipe on the inner wall of the pipeline body, an outer anti-corrosion layer on the outer wall of the pipeline body, and a connecting assembly between two adjacent pipeline bodies. The connecting assembly includes a hot-melt connecting sleeve, an upper part of a steel sleeve, a lower part of a steel sleeve, a first flange, and a second flange. Grooves are provided on both sides of the hot-melt connecting sleeve. The pipeline body and the inner lining pipe are inserted into the grooves and hot-melt connected to the hot-melt connecting sleeve as a whole. The upper part and the lower part of the steel sleeve are correspondingly fitted onto the outside of the hot-melt connecting sleeve and are in close contact with the outside of the pipeline body. A fixing assembly is provided between the upper part and the lower part of the steel sleeve. The first flange is respectively provided on both sides of the outer wall of the upper part and the lower part of the steel sleeve, and the second flange is respectively provided on the outside of the pipeline body on both sides of the hot-melt connecting sleeve. The first flange and the adjacent second flange are connected and fixed by bolts and nuts.

[0005] Specifically, the inner lining is made of polyethylene.

[0006] Specifically, the outer anti-corrosion layer is a zinc-rich primer coating.

[0007] Specifically, the fixing assembly includes an upper connecting plate disposed at both ends of the upper part of the steel sleeve and a lower connecting plate disposed at both ends of the lower part of the steel sleeve. A sealing gasket is provided on the contact surface of the mating upper and lower connecting plates, and the mating upper and lower connecting plates are connected and fixed by bolts and nuts.

[0008] Specifically, the inner walls of the upper and lower parts of the steel sleeve are provided with grooves corresponding to the hot-melt connection sleeve.

[0009] The beneficial effects of this utility model are as follows: By setting an inner lining pipe and an outer anti-corrosion layer, this utility model can simultaneously provide anti-corrosion protection for both the inside and outside of the pipeline, enhancing its corrosion resistance. Furthermore, by using a hot-melt connection sleeve, it can effectively connect two sets of pipelines, improving the sealing and corrosion resistance of the pipeline connection. By setting an upper part of a steel sleeve, a lower part of a steel sleeve, a fixing component, a first flange, and a second flange, the strength of the pipeline at the connection is improved, and its deformation probability is reduced. Attached Figure Description

[0010] Figure 1 This is a schematic diagram of the structure of this utility model;

[0011] Figure 2 This is a schematic diagram showing the connection between the pipe body and the heat fusion connection sleeve of this utility model;

[0012] Figure 3 This is a schematic diagram of the thermofusion connection sleeve structure of this utility model;

[0013] Figure 4 for Figure 1 Schematic diagram of cross-section at point AA;

[0014] In the diagram: 1-Pipe body; 2-Inner liner; 3-Hot-melt connection sleeve; 4-Upper part of steel sleeve; 5-Lower part of steel sleeve; 6-First flange; 7-Second flange; 8-Groove; 9-Upper connecting plate; 10-Lower connecting plate; 11-Sealing gasket; 12-Slot.

[0015] The following will describe in detail the embodiments of this utility model with reference to the accompanying drawings. Detailed Implementation

[0016] The present invention will be further described below with reference to the accompanying drawings and embodiments:

[0017] like Figures 1-4 As shown, a lining anti-corrosion oil pipeline for docks includes a pipeline body 1, an inner lining pipe 2 on the inner wall of the pipeline body 1, the inner lining pipe 2 being a polyethylene inner lining pipe, which can effectively reduce oil corrosion, and an outer anti-corrosion layer on the outer wall of the pipeline body 1, the outer anti-corrosion layer being a zinc-rich primer coating, which can improve corrosion resistance in the complex environment of the dock, effectively protect the pipeline, and reduce corrosion.

[0018] A connecting assembly is provided between two adjacent pipe bodies 1. The connecting assembly includes a hot-melt connecting sleeve 3, an upper part of a steel sleeve 4, a lower part of a steel sleeve 5, a first flange 6, and a second flange 7. The hot-melt connecting sleeve 3 has corresponding grooves 8 on both sides. The pipe body 1 and the inner liner 2 are inserted into the grooves 8 and hot-melt connected to the hot-melt connecting sleeve 3 as a whole. It has good sealing performance and can prevent oil leakage and corrosion.

[0019] The upper part 4 and the lower part 5 of the steel sleeve are respectively clamped on the outside of the hot-melt connection sleeve 3 and are in close contact with the outside of the pipe body 1. A fixing component is provided between the upper part 4 and the lower part 5 of the steel sleeve. The inner wall of the upper part 4 and the lower part 5 of the steel sleeve is provided with a groove 12 corresponding to the hot-melt connection sleeve 3, which can play a limiting role. The fixing component includes an upper connecting plate 9 set at both ends of the upper part 4 of the steel sleeve and a lower connecting plate 10 set at both ends of the lower part 5 of the steel sleeve. A sealing gasket 11 is provided on the contact surface of the mating upper connecting plate 9 and the lower connecting plate 10. The mating upper connecting plate 9 and the lower connecting plate 10 are connected and fixed by bolts and nuts. The first flange 6 is respectively set on both sides of the outer wall of the upper part 4 and the lower part 5 of the steel sleeve. The second flange 7 is respectively set on the outside of the pipe body 1 on both sides of the hot-melt connection sleeve 3. The first flange 6 and the adjacent second flange 7 are connected and fixed by bolts and nuts, which can improve the strength and sealing of the pipe connection and reduce oil leakage.

[0020] In operation, the two sets of pipe bodies 1 are inserted into the grooves 8 of the hot-melt connecting sleeve 3 and connected as a whole by hot-melt welding. After cooling, the upper part 4 and the lower part 5 of the steel sleeve are snapped onto the hot-melt connecting sleeve 3. Then, bolts are connected to the mating upper connecting plate 9 and the lower connecting plate 10 to fix them. Finally, the first flange 6 and the second flange 7 are connected and fixed with bolts and nuts. By setting the inner lining pipe 2 and the outer anti-corrosion layer, this utility model can simultaneously provide anti-corrosion protection for both the inside and outside of the pipe, enhancing its corrosion resistance. Moreover, the hot-melt connecting sleeve 3 can effectively connect the two sets of pipes, improving the sealing and corrosion resistance of the pipe connection. By setting the upper part 4, the lower part 5, the fixing components, the first flange 6, and the second flange 7, the strength of the pipe at the connection is improved, and the probability of deformation is reduced.

[0021] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", 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.

[0022] Furthermore, 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. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this utility model, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0023] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection, an electrical connection, or a connection that allows communication between them; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0024] The present invention has been described above with reference to the accompanying drawings. Obviously, the specific implementation of the present invention is not limited to the above-described manner. Any improvements made using the inventive concept and technical solution of the present invention, or direct application to other situations without modification, are all within the protection scope of the present invention.

Claims

1. A lined anti-corrosion oil pipeline for docks, comprising a pipeline body (1), characterized in that, The inner wall of the pipe body (1) is provided with an inner liner (2), and the outer wall of the pipe body (1) is provided with an outer anti-corrosion layer. A connecting assembly is provided between two adjacent pipe bodies (1). The connecting assembly includes a hot-melt connecting sleeve (3), an upper part of a steel sleeve (4), a lower part of a steel sleeve (5), a first flange (6), and a second flange (7). The hot-melt connecting sleeve (3) has grooves (8) on both sides. The pipe body (1) and the inner liner (2) are inserted into the grooves (8) and hot-melt connected to the hot-melt connecting sleeve (3) as a whole. The upper part of the steel sleeve ( 4) The lower part (5) of the steel sleeve is fitted on the outside of the hot-melt connection sleeve (3) and is in close contact with the outside of the pipe body (1). A fixing component is provided between the upper part (4) and the lower part (5) of the steel sleeve. The first flange (6) is respectively set on both sides of the outer wall of the upper part (4) and the lower part (5) of the steel sleeve. The second flange (7) is respectively set on the outside of the pipe body (1) on both sides of the hot-melt connection sleeve (3). The first flange (6) and the adjacent second flange (7) are fixed by bolts and nuts.

2. The anti-corrosion lined oil pipeline for docks according to claim 1, characterized in that, The inner lining tube (2) is a polyethylene inner lining tube.

3. The anti-corrosion lined oil pipeline for docks according to claim 1, characterized in that, The outer anti-corrosion layer is a zinc-rich primer coating.

4. The anti-corrosion lined oil pipeline for docks according to claim 1, characterized in that, The fixing assembly includes an upper connecting plate (9) set at both ends of the upper part (4) of the steel sleeve and a lower connecting plate (10) set at both ends of the lower part (5) of the steel sleeve. A sealing gasket (11) is provided on the contact surface of the mating upper connecting plate (9) and the lower connecting plate (10). The mating upper connecting plate (9) and the lower connecting plate (10) are connected and fixed by bolts and nuts.

5. A corrosion-resistant oil pipeline for docks according to claim 1, characterized in that, The inner walls of the upper part (4) and the lower part (5) of the steel sleeve are provided with grooves (12) corresponding to the hot-melt connection sleeve (3).

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