Crude oil loading arm convenient to clean

Abstract

The utility model relates to the technical field of crude oil crane pipes, and particularly discloses a crude oil crane pipe convenient to clean, which comprises a crane pipe body, and one end of the crane pipe body is rotatably connected with a rotary joint through the rotary joint; the crane pipe body comprises a plurality of sections of main pipelines and connecting flanges, and every two adjacent main pipelines are connected through the connecting flange with a sealing ring; the inner wall of the main pipeline is provided with flow guide ribs of a spiral structure. A connecting pipe is integrally formed at one end of the connecting flange, a plurality of annularly-distributed flow guide grooves are formed in the inner wall of the connecting pipe, the flow guide grooves and the main pipeline are arranged in an inclined mode, the crane pipe body is divided into the multiple sections of main pipelines, and the multiple sections of main pipelines are connected through the connecting flange, so that the crane pipe body is convenient to disassemble and maintain; and the flow guide ribs and the flow guide grooves are arranged on the inner wall of the main pipeline, so that fluid in the main pipeline can be guided to be quickly discharged, and the effect of facilitating cleaning is achieved.

Description

Technical Field

[0001] This utility model relates to the field of crude oil loading arms technology, and specifically discloses a crude oil loading arm that is easy to clean. Background Technology

[0002] An loading arm is a retractable and movable pipe, widely used in oil and chemical terminals for loading and unloading liquids such as oil and water. It comes in various types and offers advantages over older flexible hoses, including higher safety and flexibility. It connects to rigid pipes and elbows using swivel joints to facilitate the transfer of liquid media between trains, tank cars, and storage and transportation pipelines on trestles. Crude oil loading arms are used to transport freshly extracted crude oil from oil fields. However, during crude oil transportation, oil residue often accumulates inside the loading arms. If not cleaned promptly, this accumulated debris can cause blockages, reducing the loading arm's lifespan.

[0003] Chinese Patent No. CN214456822U discloses an easy-to-clean and maintain crude oil loading arm, including a loading arm body, flanges fixedly connected to both ends of the loading arm body, a retaining ring fixedly connected to the outer surface of the loading arm body near the flanges, a movable rod fixedly connected to one side of the retaining ring, a cleaning block movably connected to the surface of the movable rod, and a water pipe interface inserted into one side of the surface of the cleaning block. This easy-to-clean and maintain crude oil loading arm, through the arrangement of the movable rod, cleaning block, water pipe interface, nozzle, and cleaning brush, allows for easy cleaning. First, a water source is connected to the water pipe interface. After the water source is turned on, clean water is sprayed onto the surface of the loading arm through the nozzle. Moving the cleaning block allows it to slide on the movable rod on the surface of the loading arm, cleaning the surface. The cleaning brush can remove stubborn stains from the surface of the loading arm, making cleaning more thorough and convenient to operate.

[0004] While the aforementioned documents can clean the outer surface of the loading arm, crude oil residue will remain inside the loading arm when it is transporting crude oil. Over time, this can cause pipeline blockage. When flushing the inside of the pipeline, the crude oil or cleaning fluid inside cannot be guided out in time, which can easily lead to the retention of impurities. Therefore, a crude oil loading arm that is easy to clean is needed to solve this problem. Utility Model Content

[0005] This invention proposes an easy-to-clean crude oil loading arm, which facilitates disassembly and maintenance of the loading arm body. The fluid in the main pipeline can be quickly discharged through the guide ribs and guide grooves, thereby achieving the effect of easy cleaning and improving cleaning efficiency and effect.

[0006] This utility model is implemented as follows: an easy-to-clean crude oil loading arm includes a loading arm body, one end of which is rotatably connected to a rotary joint via a rotary joint; the loading arm body comprises multiple main pipe sections and connecting flanges, with adjacent main pipe sections connected by connecting flanges with sealing rings.

[0007] The inner wall of the main pipeline is provided with spiral-structured flow-guiding ribs.

[0008] One end of the connecting flange is integrally formed with a connecting pipe, and the inner wall of the connecting pipe is provided with a plurality of annularly distributed guide grooves, which are inclined to the main pipe.

[0009] An annular flushing chamber is provided on the outer wall of one end of the rotary joint, and a fan-shaped nozzle extending into the interior of the rotary joint is connected to the inner wall of the annular flushing chamber. The fan-shaped nozzle is inclined toward the inner wall of the rotary joint.

[0010] As a preferred embodiment of this utility model for easy cleaning of crude oil loading arms, the guide groove has an inverted trapezoidal cross-section.

[0011] As a preferred embodiment of this utility model for easy cleaning of crude oil loading arms, the surface of the guide ribs is coated with a polytetrafluoroethylene coating.

[0012] As a preferred embodiment of this utility model for easy cleaning of crude oil loading arms, extension sleeves are fixedly connected to both the upper and lower sides of the annular flushing chamber, and the extension sleeves are detachably connected to the rotary joint by bolts.

[0013] As a preferred embodiment of this utility model for easy cleaning of crude oil loading arms, the outer wall of the annular flushing chamber is connected to an inlet pipe with a sealing cap threaded onto the outer wall.

[0014] The beneficial effects of this utility model are:

[0015] 1. By setting the loading arm body as a multi-section main pipeline and connecting it with connecting flanges, it is easy to disassemble and maintain the loading arm body. Furthermore, by setting guide ribs and guide grooves on the inner wall of the main pipeline, the fluid in the main pipeline can be guided to be discharged quickly, thereby achieving the effect of easy cleaning.

[0016] 2. The cleaning fluid is introduced into the annular flushing chamber, and then sprayed through multiple fan-shaped nozzles. The cleaning fluid flows axially along the pipeline from top to bottom, using gravity to assist flushing and push residual pollutants toward the drain outlet, forming a unidirectional flushing flow field. The residue is finally discharged from the horizontal drain valve. The flow guiding structure and flushing structure can improve cleaning efficiency and cleaning effect. Attached Figure Description

[0017] 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. In all the drawings, similar elements or parts are generally identified by similar reference numerals. In the drawings, the elements or parts are not necessarily drawn to scale.

[0018] Figure 1 This is a front sectional view of an oil loading arm that is easy to clean according to this utility model.

[0019] Figure 2 This is a structural diagram of the connecting flange and connecting pipe of this utility model.

[0020] Figure 3 This is a diagram of the internal structure of the main pipeline of this utility model.

[0021] Figure 4 This is a structural diagram of the annular flushing chamber of this utility model.

[0022] The markings in the diagram are: 1. Loading arm body; 2. Main pipe; 201. Connecting flange; 202. Connecting pipe; 203. Flow guide groove; 3. Flow guide rib; 4. Rotary joint; 5. Annular flushing chamber; 501. Liquid inlet pipe; 502. Fan-shaped nozzle. Detailed Implementation

[0023] The present invention will be further described below with reference to the accompanying drawings and specific embodiments to aid in understanding its content. Unless otherwise specified, the methods used in this invention are conventional methods; the raw materials and apparatus used, unless otherwise specified, are conventional commercially available products.

[0024] Please see Figure 1-4 A crude oil loading arm that is easy to clean includes a loading arm body 1, one end of which is rotatably connected to a rotary joint 4 via a rotary joint; the loading arm body 1 consists of multiple main pipe sections 2 and connecting flanges 201, and two adjacent main pipe sections 2 are connected by connecting flanges 201 with sealing rings.

[0025] The inner wall of the main pipe 2 is provided with spiral-structured guide ribs 3;

[0026] One end of the connecting flange 201 is integrally formed with a connecting pipe 202. The inner wall of the connecting pipe 202 is provided with multiple annularly distributed guide grooves 203. The guide grooves 203 are inclined to the main pipe 2.

[0027] An annular flushing chamber 5 is provided on the outer wall of one end of the rotary joint 4. A fan-shaped nozzle 502 extending into the rotary joint 4 is connected to the inner wall of the annular flushing chamber 5. The fan-shaped nozzle 502 is inclined toward the inner wall of the rotary joint 4.

[0028] In this embodiment: by setting the loading arm body 1 as a multi-section main pipe 2 and connecting it through the connecting flange 201, it is convenient to disassemble and maintain the loading arm body 1. Furthermore, by setting the flow guide ribs 3 on the inner wall of the main pipe 2, the fluid in the main pipe 2 can be guided to be discharged quickly.

[0029] A guide groove 203 is opened on the inner wall of the connecting pipe 202, which can guide the crude oil or cleaning fluid attached to the inner wall of the main pipe 2 to flow along the inclined surface to the drain end of the loading arm body 1. In this way, the remaining crude oil in the pipe can be discharged from the drain path by the combined action of the spiral guide rib 3 and the guide groove 203, thereby achieving the effect of easy cleaning.

[0030] Connect the inlet pipe 501 to the high-pressure cleaner and introduce the cleaning fluid into the annular flushing chamber 5. Spray the cleaning fluid through multiple fan-shaped nozzles 502, allowing it to flow axially along the pipe from top to bottom. Utilize gravity-assisted flushing to push residual contaminants towards the drain outlet, forming a unidirectional flushing flow field. The residue is eventually discharged from the horizontal drain valve. The flow guiding structure and flushing structure can improve cleaning efficiency and effectiveness.

[0031] As a technical optimization of this utility model, the guide channel 203 has an inverted trapezoidal cross section.

[0032] In this embodiment, the guide channel 203 has an inverted trapezoidal cross section, which facilitates fluid guidance and prevents impurities from accumulating.

[0033] As a technical optimization of this utility model, the surface of the guide rib 3 is coated with polytetrafluoroethylene.

[0034] In this embodiment, by spraying a polytetrafluoroethylene coating on the surface of the flow guide rib 3, the flow guide rib 3 can be protected against corrosion, thereby extending the service life of the flow guide rib 3.

[0035] As a technical optimization of this utility model, extension sleeves are fixedly connected to both the upper and lower sides of the annular flushing chamber 5, and the extension sleeves are detachably connected to the rotary joint 4 by bolts.

[0036] In this embodiment, the extension sleeve and rotary joint 4 are easily fixed or disassembled by bolts, thereby fixing the annular flushing chamber 5.

[0037] As a technical optimization of this utility model, the outer wall of the annular flushing chamber 5 is connected to an inlet pipe 501 with a sealing cap threaded to the outer wall.

[0038] In this embodiment: Open the sealing cover and connect the liquid inlet pipe 501 to an external water source so that water can be introduced into the annular flushing chamber 5 to flush the loading arm body 1.

[0039] The working principle and usage process of this utility model are as follows: By setting the loading arm body 1 as a multi-section main pipe 2 and connecting it through the connecting flange 201, it is easy to disassemble and maintain the loading arm body 1. Furthermore, by setting the flow guiding ribs 3 on the inner wall of the main pipe 2, the fluid in the main pipe 2 can be guided to be discharged quickly.

[0040] A guide groove 203 is opened on the inner wall of the connecting pipe 202, which can guide the crude oil or cleaning fluid attached to the inner wall of the main pipe 2 to flow along the inclined surface to the drain end of the loading arm body 1. In this way, the remaining crude oil in the pipe can be discharged from the drain path by the combined action of the spiral guide rib 3 and the guide groove 203, thereby achieving the effect of easy cleaning.

[0041] Connect the inlet pipe 501 to the high-pressure cleaner and introduce the cleaning fluid into the annular flushing chamber 5. Spray the cleaning fluid through multiple fan-shaped nozzles 502, allowing it to flow axially along the pipe from top to bottom. Utilize gravity-assisted flushing to push residual contaminants towards the drain outlet, forming a unidirectional flushing flow field. The residue is eventually discharged from the horizontal drain valve. The flow guiding structure and flushing structure can improve cleaning efficiency and effectiveness.

[0042] In the description of this utility model, it should be understood that the terms "left", "right", "up", "down", "top", "bottom", "front", "back", "inner", "outer", "back", "middle", 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 limitations on this utility model.

[0043] However, the above description is only a specific embodiment of this utility model and should not be construed as limiting the scope of implementation of this utility model. Therefore, any substitution of equivalent components or equivalent changes and modifications made in accordance with the scope of protection of this utility model should still fall within the scope of the claims of this utility model.

Claims

1. A crude oil loading arm that is easy to clean, comprising a loading arm body (1), one end of which is rotatably connected to a rotary joint (4) via a rotary joint; characterized in that: The loading arm body (1) consists of multiple main pipe sections (2) and connecting flanges (201), and two adjacent main pipe sections (2) are connected by connecting flanges (201) with sealing rings; The inner wall of the main pipe (2) is provided with a spiral-structured flow guide rib (3); One end of the connecting flange (201) is integrally formed with a connecting pipe (202), and the inner wall of the connecting pipe (202) is provided with a plurality of annularly distributed guide grooves (203), and the guide grooves (203) are inclined to the main pipe (2); An annular flushing chamber (5) is provided on the outer wall of one end of the rotary joint (4). The inner wall of the annular flushing chamber (5) is connected to a fan-shaped nozzle (502) extending into the rotary joint (4). The fan-shaped nozzle (502) is inclined toward the inner wall of the rotary joint (4).

2. The oil loading arm that is easy to clean according to claim 1, characterized in that: The guide channel (203) has an inverted trapezoidal cross section.

3. The oil loading arm that is easy to clean according to claim 1, characterized in that: The surface of the flow guide rib (3) is coated with polytetrafluoroethylene.

4. The oil loading arm that is easy to clean according to claim 1, characterized in that: The upper and lower sides of the annular flushing chamber (5) are fixedly connected with extension sleeves, and the extension sleeves are detachably connected to the rotary joint (4) by bolts.

5. The oil loading arm that is easy to clean according to claim 1, characterized in that: The outer wall of the annular flushing chamber (5) is connected to an inlet pipe (501) with a sealing cap threaded onto the outer wall.

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