A multi-channel circulating chemical cleaning device for offshore platform pipelines

Abstract

The application relates to the technical field of pipeline cleaning, in particular to a multi-channel circulating chemical cleaning device for offshore platform pipelines, which comprises a first pipe body, a pump body, a second pipe body, two liquid distribution pipes, two supports, multiple connecting mechanisms, multiple valves and multiple platform pipelines, the first pipe body is connected with the output end of the pump body, the input end of the pump body is provided with the second pipe body, and multiple valves are mounted on one side of the liquid distribution pipes. According to the utility model, multiple liquid distribution pipes and platform pipelines are arranged, multi-channel parallel cleaning is realized, compared with traditional single-channel cleaning, the cleaning time is greatly shortened, the downtime of the offshore platform is reduced, and the production efficiency is remarkably improved. The valves independently controlled on each liquid distribution pipe can flexibly adjust the flow and on-off of each branch according to the pollution degree of different pipeline areas, so that precise and efficient differential cleaning is realized.

Description

Technical Field

[0001] This application relates to the field of pipeline cleaning technology, and in particular to a multi-channel circulating chemical cleaning device for pipelines on offshore platforms. Background Technology

[0002] During the operation of offshore engineering platforms, their internal pipeline systems are prone to accumulating dirt, rust, sediment, and other impurities due to the long-term transportation of media such as oil, gas, and chemicals. These impurities not only affect the transportation efficiency of the pipelines but may also lead to pipeline corrosion, blockage, or even safety accidents. Therefore, it is essential to clean the pipelines of offshore engineering platforms regularly.

[0003] Currently, most traditional offshore platform pipeline cleaning methods employ single-channel cleaning technology, which involves delivering cleaning fluid through a single pipeline to clean each target pipeline one by one. This method has significant drawbacks: firstly, due to the large size and complex structure of offshore platform pipeline systems, single-channel cleaning is extremely inefficient and time-consuming, leading to prolonged platform downtime and severely impacting production schedules; secondly, single-channel cleaning cannot meet the differentiated cleaning needs of pipelines in different areas and with different diameters, making it difficult to guarantee cleaning effectiveness. Furthermore, traditional cleaning devices often use rigid connections, which are prone to loosening and leakage in the complex vibration and temperature variations of offshore platforms, affecting the normal progress of cleaning operations and the lifespan of the equipment. Therefore, designing a cleaning device that can achieve multi-channel parallel cleaning, improve cleaning efficiency, and adapt to the complex operating conditions of offshore platforms has become an urgent technical problem to be solved. Utility Model Content

[0004] To address the problems mentioned in the background section, this application provides a multi-channel circulating chemical cleaning device for pipelines on offshore platforms.

[0005] This application provides a multi-channel circulating chemical cleaning device for pipelines on offshore platforms, which adopts the following technical solution: it includes a first pipe body, a pump body, a second pipe body, two distribution pipes, two supports, multiple connecting mechanisms, multiple valves, and multiple platform pipelines. The first pipe body is connected to the output end of the pump body, and the second pipe body is provided at the input end of the pump body. The second pipe body and the first pipe body are respectively connected to the two distribution pipes. The two supports are respectively connected to the two distribution pipes. The two distribution pipes are respectively connected to the multiple platform pipelines through the multiple connecting mechanisms. Multiple valves are installed on one side of the distribution pipe.

[0006] Optionally, the connection mechanism includes a first connecting pipe, a flexible hose, and a second connecting pipe;

[0007] The first connecting pipe is connected to the liquid distribution pipe, the first connecting pipe is connected to the second connecting pipe through the flexible tube, and the second connecting pipe is connected to the platform pipeline.

[0008] Optionally, the connecting mechanism further includes two outer rings and a rod; the two outer rings are disposed on both sides of the hose and connected to the first connecting pipe and the second connecting pipe respectively, the rod passes through the two outer rings, and the rod is fixed to the outer rings by bolts.

[0009] Optionally, a filter mechanism is also included at the inlet end of the pump body, the filter mechanism comprising two annular plates, an arc-shaped shell, and a filter screen;

[0010] The two annular plates are respectively connected to the input end of the pump body and the end of the second pipe body, and the lower part of the two annular plates is connected to the arc-shaped shell. The filter screen is respectively attached to the two annular plates and the arc-shaped shell.

[0011] Optionally, the filtering mechanism may further include a protrusion, two notches, two locking rods, a base, a spring, a rod body, and a conical block;

[0012] The protrusion is disposed on the filter screen, and the two notches are respectively machined on both sides of the protrusion. The two locking rods can be completely locked into the two notches. The two locking rods are rotatably connected to the base. The ends of the two locking rods away from the protrusion are both in contact with the conical block. The conical block is connected to the rod body. The spring is sleeved on the rod body, and the two ends of the spring are respectively connected to the base and the rod body.

[0013] Optionally, a handle is installed at the end of the rod away from the protrusion.

[0014] In summary, this application includes the following beneficial technical effects:

[0015] 1. This utility model achieves multi-channel parallel cleaning by setting up multiple liquid distribution pipes and platform pipelines. Compared with traditional single-channel cleaning, it significantly shortens the cleaning time, reduces the downtime of offshore platforms, and significantly improves production efficiency. The independently controlled valves on each liquid distribution pipe can flexibly adjust the flow rate and on / off state of each branch according to the degree of contamination in different pipeline areas, achieving precise and efficient differentiated cleaning. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the overall three-dimensional structure of the front in an embodiment of this application;

[0017] Figure 2 This is a three-dimensional structural schematic diagram of the connecting mechanism in the embodiments of this application;

[0018] Figure 3This is a three-dimensional structural schematic diagram of the filtering mechanism in the embodiments of this application;

[0019] Figure 4 This is a three-dimensional structural schematic diagram of the filtering mechanism from another perspective in the embodiments of this application.

[0020] Explanation of reference numerals in the attached figures:

[0021] 1. First pipe body; 2. Pump body; 3. Second pipe body; 4. Separator; 5. Support; 6. Connecting mechanism; 601. Rod; 602. Hose; 603. First connecting pipe; 604. Second connecting pipe; 605. Outer ring; 7. Filtration mechanism; 701. Arc-shaped shell; 702. Filter screen; 703. Protrusion; 704. Annular plate; 705. Notch; 706. Snap-fit ​​rod; 707. Conical block; 708. Rod; 709. Spring; 710. Base; 8. Platform pipe; 9. Valve Detailed Implementation

[0022] The following is in conjunction with the appendix Figure 1-4 This application will be described in further detail.

[0023] This application discloses a multi-channel circulating chemical cleaning device for pipelines on offshore platforms.

[0024] Please see Figure 1 and Figure 2 The multi-channel circulating chemical cleaning device for offshore platform pipelines consists of the following components: Main pipeline assembly: including a first pipe body 1 and a second pipe body 3, both being parallel cylindrical pipes made of metal or plastic. The first pipe body 1 and the second pipe body 3 serve as the main inlet and outlet channels for the fluid, respectively. Distribution pipeline assembly: including two identical distribution pipes 4, perpendicularly connected to the first pipe body 1 and the second pipe body 3, respectively. The distribution pipes 4 are straight pipes used to distribute the fluid in the main pipeline to various branches.

[0025] The support assembly includes two identical supports 5, which are fixedly connected to the outer walls of two dispensing pipes 4, respectively, for supporting and fixing the dispensing pipes 4. The bottom end of the support 5 is fixed to the equipment foundation. The platform piping assembly includes multiple parallel platform pipes 8, each of which is connected to the dispensing pipe 4 via a connecting mechanism 6, for transporting fluid to different process platforms. Multiple valves 9 are installed along the length of the outer wall of each dispensing pipe 4 for independently controlling the flow of fluid in each branch. The connecting mechanism 6 includes: a first connecting pipe 603, which is a short cylindrical pipe with an external thread at one end, and its external thread end is connected to a threaded hole on the side of the dispensing pipe 4. A second connecting pipe 604 has the same structure as the first connecting pipe 603, and its external thread end is connected to a threaded hole at the inlet end of the platform pipe 8. A hose 602 is made of corrosion-resistant rubber or plastic, and its two ends are respectively fitted onto the outside of the first connecting pipe 603 and the second connecting pipe 604, and are secured and sealed with hose clamps. Two symmetrically arranged semi-circular metal parts, 605, are fitted onto the outside of the flexible hose 602 and fit against the end face of the connecting pipe. Connecting plates with bolt holes are located at both ends of the outer ring 605. The rod 601, a threaded rod, passes through the connecting plates of the two outer rings 605 along the axial direction of the hose and is secured with nuts. The flexible hose 602 allows for adjustment of the installation position of the second connecting pipe 604. During transportation, the rod 601 can be fixed to the two outer rings 605 to prevent the flexible hose 602 from moving freely.

[0026] Please see Figure 3 and Figure 4The filter mechanism 7 is located at the connection between the input end of the pump body 2 and the second pipe body 3, and is used to filter impurities in the fluid. Its specific structure includes: Outer shell assembly: The annular plate 704 consists of two identical circular metal plates made of 304 stainless steel. Its outer diameter matches the outer diameter of the inlet flange of the pump body 2 and the outlet flange of the second pipe body 3, while its inner diameter is 5-10 mm larger than the pipe's inner diameter. Bolt holes are evenly distributed along the edge of the annular plate 704, with the number matching the corresponding flange bolt holes. The arc-shaped shell 701 is a semi-circular cross-section metal shell made of the same material as the annular plate. Its inner diameter matches the inner diameter of the annular plate 704, and its axial length is 150-250 mm. The two ends of the arc-shaped shell 701 are welded to the lower halves of the two annular plates 704, forming a semi-closed filter chamber. Filter assembly: The filter screen 702 is a cylindrical metal filter screen woven from 316L stainless steel wire, with a mesh size of 40-100 mesh, determined according to the required filtration precision. The outer diameter of the filter screen 702 is clearance-fitted with the inner diameter of the arc-shaped shell 701, and its axial length is slightly shorter than that of the arc-shaped shell 701 by 5-10mm. Its two ends are respectively attached to the inner sidewalls of the two annular plates 704. The protrusion 703 is a rectangular metal block integrally formed on the outer sidewall of the filter screen 702, made of the same material as the filter screen, with a length of 40-60mm, a width of 20-30mm, and a height of 10-15mm. The notch 705 consists of two symmetrical rectangular grooves on both sides of the protrusion 703, with a groove width of 8-12mm and a groove depth of 10-15mm, and a 30° chamfer at the groove opening. The locking assembly consists of two identical L-shaped metal rods, with a horizontal section length of 30-40mm and a vertical section length of 20-30mm. The ends of the horizontal sections are machined into rectangular locking heads that match the notch 705, and the thickness of the locking heads is 0.2-0.5mm less than the width of the notch. The base 710 is a rectangular metal seat fixed to the outer wall of the arc-shaped shell 701. The base 710 is connected to the second tube 3 and has two parallel hinge shafts for mounting the snap-fit ​​rod 706. The conical block 707 is a metal cone with a base diameter of 15-20 mm, its conical surface fitting against the inner side of the vertical section of the snap-fit ​​rod 706. The rod 708 is a stainless steel screw, one end welded to the conical block 707, and the other end passing through the central hole of the base 710 and extending to the outside. The spring 709 is a cylindrical helical compression spring made of 65Mn spring steel, with an outer diameter 2-3 mm larger than the central hole diameter of the base 710, a free length of 40-60 mm, and a stiffness coefficient of 5-10 N / mm. The spring 709 is sleeved on the outside of the rod 708, with both ends abutting against the end faces of the base 710 and the conical block 707, respectively.The handle is a round handle installed at the end of the rod 708. It is made of engineering plastic with a diameter of 30-40mm and has anti-slip texture on the surface. When the elastic deformation of the spring 709 drives the cone block 707 to move towards the protrusion 703, it drives the two locking rods 706 to always lock onto the two notches 705 of the protrusion 703, thus ensuring the stability of the filter screen 702.

[0027] The implementation principle of the multi-channel circulating chemical cleaning device for pipelines of offshore platforms in this application embodiment is as follows: This device constructs a complete fluid circulation loop: the cleaning fluid enters the first pipe body 1 from an external liquid supply source, serving as the main input channel; the cleaning fluid in the first pipe body 1 is distributed to multiple platform pipelines 8 through the connecting distribution pipe 4, and the valve 9 on each distribution pipe 4 can independently control the flow and on / off of each branch, achieving precise control of different cleaning areas; the cleaning fluid is transported to each pipeline system to be cleaned on the offshore platform through the platform pipelines 8, chemically cleaning the inner wall of the pipeline to dissolve and remove impurities such as dirt and rust; the waste liquid after the cleaning operation is completed is collected through another distribution pipe 4 and flows into the second pipe body 3, which is connected to a cleaning fluid storage tank, thus forming a circulation loop; the waste liquid in the second pipe body 3 is filtered by the filter mechanism 7 to remove impurities, and then pressurized by the pump body 2 and re-transported to the cleaning system, realizing the recycling of the cleaning fluid.

[0028] During the chemical cleaning process, the corresponding valve 9 is first opened to pre-flush the main pipeline with the cleaning fluid, removing large particulate impurities. Next, a suitable chemical cleaning agent is prepared and continuously circulated within the pipeline through a circulation system to dissolve stubborn dirt. Then, based on the degree of contamination in different pipeline areas, the flow of each branch is controlled via valve 9 to achieve segmented and zoned fine cleaning. During circulation, the filtration mechanism 7 continuously removes impurities from the cleaning fluid, ensuring cleaning effectiveness and extending the service life of the cleaning fluid. After cleaning, a neutralizing agent is injected into the system to neutralize the pipeline and residual cleaning agent, ensuring environmentally friendly emissions. Based on the above principles, this device achieves efficient, environmentally friendly, and low-cost chemical cleaning of pipelines on offshore platforms, and is suitable for pipeline maintenance of large offshore engineering facilities such as offshore oil exploration platforms and offshore wind power foundations.

[0029] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A multi-channel circulating chemical cleaning device for pipelines on offshore platforms, comprising a first pipe body (1), a pump body (2), a second pipe body (3), two liquid distribution pipes (4), two supports (5), multiple connecting mechanisms (6), multiple valves (9), and multiple platform pipelines (8), characterized in that: The first tube (1) is connected to the output end of the pump body (2). A second tube (3) is provided at the input end of the pump body (2). The second tube (3) and the first tube (1) are respectively connected to two liquid distribution tubes (4). Two supports (5) are respectively connected to two liquid distribution tubes (4). The two liquid distribution tubes (4) are respectively connected to multiple platform pipes (8) through multiple connecting mechanisms (6). Multiple valves (9) are installed on one side of the liquid distribution tube (4).

2. The multi-channel circulating chemical cleaning device for pipelines on offshore platforms according to claim 1, characterized in that: The connecting mechanism (6) includes a first connecting pipe (603), a flexible hose (602), and a second connecting pipe (604); The first connecting pipe (603) is connected to the liquid distribution pipe (4), the first connecting pipe (603) is connected to the second connecting pipe (604) through the hose (602), and the second connecting pipe (604) is connected to the platform pipe (8).

3. The multi-channel circulating chemical cleaning device for pipelines on offshore platforms according to claim 2, characterized in that: The connecting mechanism (6) further includes two outer rings (605) and a rod (601); the two outer rings (605) are disposed on both sides of the hose (602) and connected to the first connecting pipe (603) and the second connecting pipe (604) respectively; the rod (601) passes through the two outer rings (605) and is fixed to the outer rings (605) by bolts.

4. The multi-channel circulating chemical cleaning device for pipelines on offshore platforms according to claim 1, characterized in that: It also includes a filter mechanism (7) disposed at the input end of the pump body (2), the filter mechanism (7) comprising two annular plates (704), an arc-shaped shell (701) and a filter screen (702); The two annular plates (704) are respectively connected to the input end of the pump body (2) and the end of the second pipe body (3). The lower part of the two annular plates (704) is connected to the arc-shaped shell (701). The filter screen (702) is respectively attached to the two annular plates (704) and the arc-shaped shell (701).

5. A multi-channel circulating chemical cleaning device for pipelines on offshore platforms according to claim 4, characterized in that: The filter mechanism (7) also includes a protrusion (703), two notches (705), two snap-fit ​​rods (706), a base (710), a spring (709), a rod (708), and a conical block (707); The protrusion (703) is disposed on the filter screen (702), and the two notches (705) are respectively machined on both sides of the protrusion (703). The two locking rods (706) can be completely locked into the two notches (705). The two locking rods (706) are rotatably connected to the base (710). The ends of the two locking rods (706) away from the protrusion (703) are both in contact with the conical block (707). The conical block (707) is connected to the rod body (708). The spring (709) is sleeved on the rod body (708). The two ends of the spring (709) are respectively connected to the base (710) and the rod body (708).

6. The multi-channel circulating chemical cleaning device for pipelines on offshore platforms according to claim 5, characterized in that: A handle is installed at the end of the rod (708) away from the protrusion (703).

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