Oil conveying pipeline capable of preventing line expansion

Abstract

The utility model relates to the technical field of oil conveying equipment, in particular to an anti-expansion oil conveying pipeline. Comprising a main pipeline, a tee joint is arranged along a downstream port of the main pipeline, ports of the tee joint are connected with the main pipeline, a first branch pipeline and a second branch pipeline respectively, the first branch pipeline and the second branch pipeline are located on the same horizontal line, and one or more bypass pipelines are arranged at parallel positions of one side of the first branch pipeline and one side of the second branch pipeline. The two ends of the bypass are arranged on the first branch pipeline and the second branch pipeline respectively. The utility model has the advantages that: line expansion is prevented, and abnormal conditions such as shaking of an oil conveying pipeline are reduced; and meanwhile, the oil transportation efficiency is not influenced.

Description

Technical Field

[0001] The utility model relates to the technical field of oil transportation equipment, in particular to an anti-expansion-line oil transportation pipeline. Background Art

[0002] At present, refined oil is often nitrogen-sealed in storage tanks during storage. When refined oil needs to be transferred, it needs to be transported from the storage tank to the transfer equipment through an oil transportation pipeline. However, during the actual transfer of refined oil, the pipeline connecting the storage tank and the transfer equipment often causes an increase or decrease in oil pressure due to changes in height difference or output volume. Once the oil pressure is high during the transportation of refined oil, the oil transportation pipeline is likely to shake violently, and in severe cases, problems such as rupture of the oil transportation pipeline or other problems caused by pipeline expansion may even occur.

[0003] In the prior art, the patent authorization announcement number: CN 106247067 B, the patent name: An explosion-proof valve for an oil transportation pipeline discloses that the purpose of the explosion-proof valve is to ensure the normal operation of the oil pipeline during oil transportation and prevent the oil transportation pipeline from expanding. However, when the explosion-proof valve is used, the oil transportation pipeline downstream of the oil pipeline needs to be closed, which also affects the work efficiency during oil transportation.

[0004] Therefore, those skilled in the art need to provide an oil transportation pipeline that does not affect the oil transportation work efficiency and has anti-expansion line function. Content of the Utility Model

[0005] The utility model provides an anti-expansion-line oil transportation pipeline for solving the problem that the oil transportation pipeline is prone to expansion during oil transportation.

[0006] The technical solution of the utility model is as follows:

[0007] An anti-expansion-line oil transportation pipeline includes a main pipeline. A tee joint is provided along the downstream port of the main pipeline. Port A of the tee joint is connected to the main pipeline, port B of the tee joint is connected to a first branch pipeline, and port C of the tee joint is connected to a second branch pipeline. The first branch pipeline and the second branch pipeline are on the same horizontal line. Specifically, one or more bypass pipelines are provided at parallel positions on one side of the first branch pipeline and the second branch pipeline. Both ends of the bypass pipeline are respectively arranged on the first branch pipeline and the second branch pipeline.

[0008] As an implementable mode, a first valve is further provided on the first branch pipeline, and a second valve is provided on the second branch pipeline. An "O" - shaped pipeline is formed between the bypass pipeline and the first branch pipeline and the second branch pipeline. The first valve and the second valve are arranged in the "O" - shaped pipeline.

[0009] As an implementable mode, valves are respectively arranged at both ends of one bypass pipeline.

[0010] As an implementable mode, multiple bypass pipelines are arranged side by side vertically. One series pipeline is provided at each end of the multiple bypass pipelines, and valves are respectively provided on the two series pipelines.

[0011] As an implementable mode, the nominal diameters of the main pipeline, the first branch pipeline and the second branch pipeline are DN60mm; the nominal diameter of the bypass pipeline is DN25mm.

[0012] As an implementable mode, it further includes that the first valve and the second valve are respectively flange-connected to the pipeline.

[0013] As an implementable mode, it further includes that brackets are respectively provided below the first branch pipeline and the second branch pipeline, and the two brackets are respectively arranged at positions corresponding to the lower sides of the first valve and the second valve.

[0014] The beneficial effects of the present utility model are as follows: In the present utility model, a tee joint is connected to the downstream port of the main pipeline, and two branch pipes on a straight line are connected through the tee joint. Bypass pipelines are arranged at parallel positions with the two branch pipes. When the pipeline pressure of the oil transportation main pipeline and the branch pipes increases, the valves at both ends of the bypass pipeline are automatically or manually opened, and part of the fluid is diverted to the small pipeline of the bypass pipeline, preventing the pipeline from swelling and reducing abnormal conditions such as pipeline shaking caused by the increase in pressure of the oil transportation pipeline; at the same time, during the oil transportation process, the explosion-proof valve does not need to be closed, and the oil transportation efficiency is not affected.

[0015] When there are multiple bypass pipelines, one series pipeline is provided at each end of the bypass pipelines. The series pipelines connect the ports of the multiple bypass pipelines together, and valves are respectively provided on the two series pipelines. The connection of the multiple bypass pipelines can be controlled by opening and closing the valves. When the pipeline pressure of the oil transportation main pipeline and the branch pipes increases, the valves are opened, and the swelling situation of the oil transportation pipeline can be quickly relieved. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 is a three-dimensional structural schematic diagram of Embodiment 1 of the present utility model;

[0017] Figure 2 is a three-dimensional structural schematic diagram of Embodiment 2 of the present utility model;

[0018] Figure 3 is a top-view structural schematic diagram of Embodiment 2 of the present utility model;

[0019] Figure 4 is a field schematic diagram of Embodiment 1 of the present utility model;

[0020] In the figure:

[0021] 1. Main pipeline 101. Tee joint 2. First branch pipeline

[0022] 201. First valve 3. Second branch pipeline 301. Second valve

[0023] 4. Bypass pipeline 401. Third valve 402. Fourth valve

[0024] 5. Bracket Detailed implementation manners

[0025] The following details the specific implementation manners of the present utility model in conjunction with the accompanying drawings. It should be understood that the specific implementation manners described herein are only for the purpose of illustration and explanation of the present utility model, and are not used to limit the present utility model.

[0026] It should be noted that the orientation or positional relationship indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. is based on the orientation or positional relationship shown in the accompanying drawings, and is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as a limitation to the present utility model.

[0027] Please refer to Figures 1 to 4

[0028] Embodiment 1

[0029] An anti-expansion line oil pipeline includes a main pipeline 1. A tee 101 is welded to the downstream port of the main pipeline 1. The ports of the tee 101 are respectively connected to the main pipeline 1, a first branch pipeline 2 and a second branch pipeline 3. The first branch pipeline 2 and the second branch pipeline 3 are on the same horizontal line. An inverted "T" shape is formed among the first branch pipeline 2, the second branch pipeline 3 and the main pipeline 1. A bypass pipeline 4 is provided at a parallel position on one side of the first branch pipeline 2 and the second branch pipeline 3. Both ends of the bypass pipeline 4 are respectively arranged on the first branch pipeline 2 and the second branch pipeline 3. A first valve 201 is arranged on the first branch pipeline 2, and a second valve 301 is arranged on the second branch pipeline 3. The first valve 201 and the second valve 301 are respectively connected to the pipeline by flanges. Both the first valve 201 and the second valve 301 are explosion-proof valves. An "open" shaped pipeline is formed among the bypass pipeline 4, the first branch pipeline 2 and the second branch pipeline 3. The first valve 201 and the second valve 301 are arranged inside the "open" shaped pipeline, and both ends of the bypass pipeline 4 are close to the first valve 201 and the second valve 301.

[0030] The nominal diameter of the main pipeline 1, the first branch pipeline 2, and the second branch pipeline 3 is DN60mm; the nominal diameter of the bypass pipeline 4 is DN25mm; valves are respectively arranged at both ends of a bypass pipeline 4, and the valves on the bypass pipeline are the third valve 401 and the fourth valve 402 respectively; brackets 5 are welded respectively below the first branch pipeline 2 and the second branch pipeline 3, and the two brackets 5 are respectively arranged at the positions corresponding to and below the first valve 201 and the second valve 301.

[0031] In practical applications, refined oil is stored in a nitrogen-sealed storage tank. When the refined oil needs to be transferred, the storage tank valve and the first valve 201 are opened. After the refined oil flows out from the main pipeline 1, it enters the loading equipment through the first branch 2. When the oil pressure is too high, to prevent problems such as pipeline shaking and line expansion, the third valve 401 and the fourth valve 402 on the bypass pipeline can be opened to divert part of the fluid to the small pipeline of the bypass pipeline 4, reducing the pressure of the oil on the main pipeline 1 and the first branch pipeline 2, and flowing back to another sealed storage tank through the small pipeline of the bypass pipeline 4. This not only reduces the line expansion pressure of the pipeline but also does not affect the oil transportation efficiency.

[0032] Embodiment 2

[0033] An anti-line-expansion oil transportation pipeline includes a main pipeline 1. A tee 101 is welded along the downstream port of the main pipeline 1. The ports of the tee 101 are respectively connected to the main pipeline 1, the first branch pipeline 2, and the second branch pipeline 3. The first branch pipeline 2 and the second branch pipeline 3 are on the same horizontal line. A plurality of bypass pipelines 4 are arranged in parallel positions on one side of the first branch pipeline 2 and the second branch pipeline 3. The plurality of bypass pipelines 4 are arranged in parallel and vertically. One series pipeline is respectively arranged at both ends of the plurality of bypass pipelines 4, and the third valve 401 and the fourth valve 402 are respectively arranged on the two series pipelines; a first valve 201 is arranged on the first branch pipeline 2, and a second valve 301 is arranged on the second branch pipeline 3. The first valve 201 and the second valve 301 are both explosion-proof valves.

[0034] In practical applications, when the oil needs to be unloaded after loading, the unloading valve, the first valve 201, and the second valve 301 are opened. The oil enters the first branch 2 from the loading equipment and is transported to the second branch pipeline 3. When the oil pressure is too high, to prevent problems such as pipeline shaking and line expansion, the third valve 401 and the fourth valve 402 on the bypass pipeline 4 can be opened to divert part of the fluid to the small pipelines of the plurality of series-connected bypass pipelines 4, and through the bypass pipeline 4 and the second branch pipeline 3, flow back to the sealed storage tank connected to the second branch pipeline 3.

[0035] Multiple bypass pipelines 4 are arranged side by side vertically. The uppermost bypass pipeline can be set to have the same horizontal height as the first pipeline, and the horizontal heights of the other bypass pipelines 4 gradually decrease. When the oil product is transmitted from the first pipeline to the second pipeline, the transmission speeds of the multiple bypass pipelines 4 with gradually decreasing horizontal heights are equivalent, and the oil product can be evenly split and enter the second pipeline, reducing the pressure of the oil product on the first pipeline 2. Moreover, the small pipelines of the bypass pipelines 4 reduce the pipeline expansion pressure and do not affect the oil transportation efficiency.

[0036] The above has described an embodiment of the present invention in detail, but the described content is only a preferred embodiment of the present invention and cannot be considered as limiting the implementation scope of the present invention. Any equivalent changes and improvements made within the scope of the application of the present invention shall still fall within the patent coverage scope of the present invention.

Claims

1. An anti-expansion-line oil pipeline, including a main pipeline, a tee is provided along the downstream port of the main pipeline. Port A of the tee is connected to the main pipeline, port B of the tee is connected to the first branch pipeline, and port C of the tee is connected to the second branch pipeline. The first branch pipeline and the second branch pipeline are on the same horizontal line, and it is characterized in that: It also includes one or more bypass pipelines arranged in parallel on one side of the first pipeline and the second pipeline, and both ends of the bypass pipeline are respectively arranged on the first pipeline and the second pipeline.

2. The anti-expansion line oil pipeline according to claim 1, wherein: A first valve is arranged on the first pipeline, and a second valve is arranged on the second pipeline. An "O"-shaped pipeline is formed between the bypass pipeline and the first pipeline and the second pipeline, and the first valve and the second valve are arranged inside the "O"-shaped pipeline.

3. The anti-expansion line oil pipeline according to claim 1, wherein: Valves are respectively arranged at both ends of one bypass pipeline.

4. The anti-expansion line oil pipeline according to claim 1, characterized in that: Multiple bypass pipelines are arranged in parallel up and down. Two series pipelines are respectively arranged at both ends of the multiple bypass pipelines, and valves are respectively arranged on the two series pipelines.

5. The anti-expansion line oil pipeline according to claim 1, wherein: The main pipeline, the first pipeline, and the second pipeline adopt a nominal diameter of DN60mm; the nominal diameter of the bypass pipeline is DN25mm.

6. The anti-expansion line oil pipeline according to claim 2, characterized in that: The first valve and the second valve are respectively flange-connected to the pipeline.

7. The anti-expansion line oil pipeline according to claim 2, wherein: Supports are respectively arranged below the first pipeline and the second pipeline, and the two supports are respectively arranged at positions corresponding to the lower sides of the first valve and the second valve.

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