Offshore platforms and filter grids
By installing a filter grid at the inlet of the pile driving pipeline, large debris and plankton are prevented from entering, thus solving the problem of blockage in the pile driving pipeline, improving the operating efficiency of the pile driving and water pump, and ensuring the smooth progress of pile extraction operations.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- YANTAI RAFFLES SHIPYARD
- Filing Date
- 2025-06-11
- Publication Date
- 2026-05-26
AI Technical Summary
During automated pile driving operations, large debris and plankton can easily be sucked into the pile driving pipeline, causing blockage and affecting the pile driving effect and the efficiency of pile extraction.
Design a filter bar including a connecting flange, a connecting pipe, a transition piece and multiple inclinedly arranged bar screens to form filter holes and openings, preventing large debris and plankton from entering the flushing pipeline, while guiding water flow smoothly into the suction inlet, reducing turbulence and eddies.
It effectively prevents large debris and plankton from entering the pile driving pipeline, improves the pile driving effect and water pump operating efficiency, avoids blockage, and ensures smooth pile extraction operations.
Smart Images
Figure CN224270440U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of offshore platform technology, and in particular to an offshore platform and a filter grid. Background Technology
[0002] As the global development and utilization of marine resources continues to deepen, offshore platforms play a vital role in many fields such as offshore oil extraction, offshore wind power generation, and cross-sea bridge construction.
[0003] Offshore platforms use ballast to insert their legs and shoes into the seabed at a certain depth, providing the necessary load-bearing capacity and ensuring safe operation. When pile extraction is required to relocate the platform to the next target location, a pile driving system is typically used to reduce extraction resistance, especially when the pile shoe bearing layer is clay, in order to successfully complete the extraction operation. This is particularly important when the pile shoe bearing layer is clay. Therefore, the effectiveness of pile driving is crucial for ensuring the smooth progress of pile extraction operations, directly affecting the schedule and even the safety of the operation.
[0004] However, during automatic pile driving operations, large debris and plankton can easily be sucked into the pile driving pipeline, causing blockage and resulting in poor pile driving effect, difficulty in pile extraction, reduced efficiency of pile extraction operations, or even failure to complete the pile extraction operation normally. Utility Model Content
[0005] The purpose of this invention is to provide a filter grid that can prevent large debris or plankton from being sucked into the pile pipe, and an offshore platform having the filter grid, so as to solve the problems of the prior art.
[0006] To solve the above-mentioned technical problems, the present invention adopts the following technical solution: a filter grid, comprising:
[0007] Connection flange, used for connection to external structures;
[0008] A connecting pipe is disposed at one axial end of the connecting flange;
[0009] A transition piece, which is annular and connected to the axial end of the connecting pipe away from the connecting flange;
[0010] The port component is ring-shaped;
[0011] Multiple grilles are arranged at circumferential intervals along the port member; each grille is obliquely connected between the port member and the transition member, and is obliquely inward along the direction from the transition member to the port member;
[0012] The port component has a hollow interior forming a filter hole. Any two adjacent grilles, the port component, and the transition component together form a filter opening. The filter opening and the filter hole are used to prevent substances larger than the two from entering the connecting pipe.
[0013] In one embodiment, a plurality of the grilles are evenly arranged, and the number of the grilles is 8 to 12.
[0014] In one embodiment, the cross-section of the grille is circular, the cross-section of the port component is circular, and the diameter of the grille is smaller than the diameter of the cross-section of the port component; the diameter of the grille is 20~50mm.
[0015] In one embodiment, the angle between the grille and the plane containing the transition member is 30° to 60°.
[0016] The axial distance between the transition member and the port member is less than or equal to 150 mm.
[0017] In one embodiment, the center distance between opposite sides of the port component along the radial direction is 200~300mm.
[0018] In one embodiment, the transition member has a circular cross-section, and the diameter of the transition member cross-section is greater than or equal to 80 mm.
[0019] In one embodiment, the connecting pipe is fixedly connected to the inner peripheral wall of the transition member;
[0020] Along the axial direction of the transition member, the connecting pipe does not intersect the centerline of the transition member.
[0021] In one embodiment, the connecting flange is sleeved on the outer periphery of the connecting pipe, and the connecting flange is provided with a plurality of connecting holes spaced apart along its own circumference.
[0022] This utility model also provides an offshore platform, including a pile driving pipeline and at least one filter grid as described above, wherein the filter grid is disposed at the intake of the pile driving pipeline.
[0023] In one embodiment, the pile driving pipeline is provided with a mounting flange at the suction port, and the connecting flange is detachably connected to the mounting flange;
[0024] The diameter of the connecting pipe is compatible with the pile driving pipeline.
[0025] As can be seen from the above technical solution, this utility model has at least the following advantages and positive effects:
[0026] This utility model's filter grille not only prevents large debris or plankton from being sucked into the submerged pile pipeline, but also guides water flow smoothly into the suction inlet, reducing turbulence and eddies, thereby improving the pump's operating efficiency. The filter grille's novel design and ingenious structure fill a gap in the market for submerged pile suction inlet grilles. Attached Figure Description
[0027] Figure 1 This is a schematic diagram of the structure of the filter grid in this utility model.
[0028] Figure 2 This is a front view schematic diagram of the filter grille in this utility model.
[0029] Figure 3 This is a top view of the filter grid in this utility model.
[0030] Figure 4 This is a schematic diagram of the filter grid installed on the pile driving pipeline in this utility model.
[0031] The annotations in the attached figures are explained as follows:
[0032] 1. Filter bar; 11. Connecting flange; 12. Connecting pipe; 13. Transition piece; 14. Port piece; 15. Multiple bar screens;
[0033] 2. Piling pipeline. Detailed Implementation
[0034] Although the present invention can be readily embodied in various forms, only some specific embodiments are shown in the accompanying drawings and will be described in detail in this specification. It is understood that this specification should be regarded as an exemplary illustration of the principles of the present invention and is not intended to limit the present invention to what is described herein.
[0035] Therefore, a feature pointed out in this specification is used to describe one feature of one embodiment of the present invention, and does not imply that every embodiment of the present invention must have the described feature. Furthermore, it should be noted that this specification describes many features. Although certain features may be combined to illustrate possible system designs, these features may also be used in other combinations not explicitly stated. Therefore, unless otherwise stated, the described combinations are not intended to be limiting.
[0036] In the embodiments shown in the accompanying drawings, the directional indications (such as up, down, left, right, front, and back) used to explain the structure and movement of the various elements of this invention are relative rather than absolute. These descriptions are appropriate when these elements are in the positions shown in the drawings. If the descriptions of the positions of these elements change, these directional indications also change accordingly.
[0037] This application provides a filter grid to prevent large debris and plankton from being sucked into the pile driving pipeline.
[0038] The multiple screens in the filter screen can guide the water flow smoothly into the filter screen and then into the suction inlet of the pile driving pipeline, reducing turbulence and vortices and improving the operating efficiency of the water pump.
[0039] Combination Figures 1-3 The filter grid 1 includes a connecting flange 11, a connecting pipe 12, a transition member 13, a port member 14, and multiple grids 15. The multiple grids 15 are spaced apart circumferentially along the port member 14; each grid is obliquely connected between the port member 14 and the transition member 13, and is obliquely inward along the direction from the transition member 13 to the port member 14. The port member 14 is hollow inside, forming filter holes. Any two adjacent grids, together with the port member 14 and the transition member 13, form a filter opening. The filter opening and filter holes are used to prevent substances larger than both from entering the connecting pipe 12.
[0040] The filter screen 1 is located at the inlet, which prevents larger materials from entering the connecting pipe 12 and then the pile driving pipeline 2, thus ensuring the pile driving effect. The filter openings between the multiple screens 15 guide the water flow smoothly into the connecting pipe 12 and then into the inlet of the pile driving pipeline 2, reducing turbulence and eddies and improving the operating efficiency of the water pump.
[0041] The connecting flange 11 is adapted to the mounting flange at the suction inlet of the pile driving pipeline 2. The axial and radial dimensions of the connecting flange 11 are set according to the mounting flange and specific requirements.
[0042] The connecting flange 11 is detachably connected to the mounting flange. Specifically, the connecting flange 11 has a plurality of connecting holes spaced apart along its circumference. The axial direction of the connecting holes extends along the axial direction of the connecting flange 11 and passes through the connecting flange 11. The connecting flange 11 is detachably connected by fasteners that pass through both the connecting holes and the mounting holes on the mounting flange.
[0043] A connecting pipe 12 is disposed at one axial end of the connecting flange 11. The connecting pipe 12 passes through the connecting flange 11, meaning the connecting flange 11 is fitted around the outer circumference of the connecting pipe 12. The connecting pipe 12 is positioned between the connecting flange 11 and the transition piece 13, and its axial length creates a space between them. This space not only facilitates the connection of the connecting flange 11 to the mounting flange by operating fasteners, but also allows for the installation of a valve within the connecting pipe 12. Specifically, the axial length of the connecting pipe 12 can be adjusted according to the length of the fasteners.
[0044] The connecting flange 11 extends outward beyond the connecting pipe 12 at its axial end furthest from the transition piece 13. That is... Figure 2With the view direction as a reference, the bottom of the connecting flange 11 extends downward beyond the bottom of the connecting pipe 12.
[0045] The transition piece 13 is annular and connected to the axial end of the connecting pipe 12 away from the connecting flange 11. That is, the transition piece 13 and the connecting flange 11 are respectively provided at both axial ends of the connecting pipe 12.
[0046] The transition member 13 is used to fix the grid, which can effectively provide support for the grid and ensure the strength of the entire filter grid 1. The transition member 13 has a circular cross-section. For example, it is made of seamless steel pipe or welded steel pipe, pre-formed into a circular shape.
[0047] The diameter D of the transition piece 13 is greater than or equal to 80 mm. This range of diameter D ensures the strength of the transition piece 13 while facilitating the connection between the grille and the transition piece 13.
[0048] The connecting pipe 12 is fixedly connected to the inner peripheral wall of the transition member 13. That is, the inner peripheral wall of the transition member 13 is fixedly connected to the outer peripheral wall of the connecting pipe 12.
[0049] Along the axial direction of the transition member 13, the centerline of the connecting pipe 12 does not intersect with that of the transition member 13. Figure 2 With the view direction as a reference, the connecting pipe 12 is spaced below the center line of the transition piece 13, so the two do not intersect. The center line of the transition piece 13 referred to here is the line passing through the axial center of the transition piece 13.
[0050] The port component 14 is annular. The cross-section of the port component 14 is circular. Exemplarily, it can be understood that the port component 14 forms an annular structure by connecting the ends of steel pipes with circular cross-sections.
[0051] The port component 14 is hollow, forming filter holes. The center distance L between the opposite sides of the port component 14 along the radial direction is 200~300mm. Figure 2 With the view direction as a reference, the center distance L refers to the radial distance between the centers of the two cross-sectional circles on opposite sides of the port component 14.
[0052] The center distance L is set to prevent larger debris or plankton from being sucked into the connecting pipe 12 and then into the pile driving pipeline 2.
[0053] Multiple screens 15 are spaced circumferentially along the port member 14. Each screen is inclinedly connected between the port member 14 and the transition member 13, and is inclined inward along the direction from the transition member 13 to the port member 14. The multiple screens 15 inclinedly connected between the port member 14 and the transition member 13 make the entire filter screen 1 have a shape with a gradually increasing diameter from the port member 14 to the transition member 13, which can guide the water flow smoothly into the suction port, reduce turbulence and eddies, and improve the operating efficiency of the water pump.
[0054] Specifically, multiple grilles 15 are evenly arranged.
[0055] The number of grilles is 8 to 12. By setting this number, the filter openings between adjacent grilles are kept relatively small, thus effectively blocking debris or planktonic organisms.
[0056] The cross-section of the grille is circular. In this embodiment, the grille is made of circular steel bars.
[0057] The diameter d2 of the grille is smaller than the diameter d1 of the section of the port component 14. Specifically, the diameter d2 of the grille is 20~50mm.
[0058] The included angle α between the plane containing the grille and the transition piece 13 is 30°~60°.
[0059] The axial distance h between the transition piece 13 and the port piece 14 is less than or equal to 150 mm.
[0060] The above-mentioned dimensions not only take into account the strength requirements of the entire filter grid 1, but also ensure the flow area of the filter opening and filter holes, and can also prevent large debris or plankton from being sucked into the pile pipeline 2.
[0061] This application also provides an offshore platform, including a pile driving pipeline 2 and at least one filter grid 1 as described above, the filter grid 1 being disposed at the intake of the pile driving pipeline 2.
[0062] See Figure 4 The pile driving pipeline 2 is equipped with an installation flange at the suction port, and the connecting flange 11 is detachably connected to the installation flange.
[0063] The diameter of the connecting pipe 12 is compatible with the diameter of the pile driving pipeline 2. Specifically, the diameter of the connecting pipe 12 is compatible with the diameter of the pile driving pipeline 2 at the suction inlet.
[0064] By placing the filter grid 1 at the suction inlet of the pile driving pipeline 2, large debris or plankton are prevented from being sucked into the pile driving pipeline 2. This solves the problem of large debris clogging the suction pipe and damaging the pump during the adsorption process of the pile driving pipeline 2, and improves the working efficiency of pile driving.
[0065] Multiple screens 15 are inclinedly connected between the port piece 14 and the transition piece 13, so that the entire filter screen 1 has a gradually increasing diameter from the port piece 14 to the transition piece 13. This can guide the water flow smoothly into the suction port, reduce turbulence and vortex, and improve the operating efficiency of the water pump.
[0066] In summary, this filter screen not only prevents large debris or plankton from being sucked into the subsea pile suction pipeline, but also guides water flow smoothly into the suction inlet, reducing turbulence and eddies, thereby improving the pump's operating efficiency. The filter screen's novel design and ingenious structure fill a gap in the market for subsea pile suction inlet screens.
[0067] Although the present invention has been described with reference to several typical embodiments, it should be understood that the terminology used is descriptive and exemplary, and not restrictive. Since the present invention can be embodied in many forms without departing from the spirit or essence of the invention, it should be understood that the above embodiments are not limited to any of the foregoing details, but should be interpreted broadly within the spirit and scope defined by the appended claims. Therefore, all variations and modifications falling within the scope of the claims or their equivalents should be covered by the appended claims.
Claims
1. A filter grid, characterized in that include: Connection flange, used for connection to external structures; A connecting pipe is disposed at one axial end of the connecting flange; A transition piece, which is annular and connected to the axial end of the connecting pipe away from the connecting flange; The port component is ring-shaped; Multiple grilles are arranged at circumferential intervals along the port member; each grille is obliquely connected between the port member and the transition member, and is obliquely inward along the direction from the transition member to the port member; The port component has a hollow interior forming a filter hole. Any two adjacent grilles, the port component, and the transition component together form a filter opening. The filter opening and the filter hole are used to prevent substances larger than the two from entering the connecting pipe.
2. The filter grate of claim 1, wherein, The grids are evenly arranged, and the number of grids is 8 to 12.
3. The filter grid according to claim 1, characterized in that, The cross-section of the grille is circular, the cross-section of the port component is circular, and the diameter of the grille is smaller than the diameter of the cross-section of the port component; the diameter of the grille is 20~50mm.
4. The filter grid according to claim 1, characterized in that, The angle between the grille and the plane of the transition member is 30°~60°; The axial distance between the transition member and the port member is less than or equal to 150 mm.
5. The filter grid according to claim 1, characterized in that, The center distance between the opposite sides of the port component along the radial direction is 200~300mm.
6. The filter grid according to claim 1, characterized in that, The transition piece has a circular cross-section, and the diameter of the cross-section is greater than or equal to 80 mm.
7. The filter grid according to claim 1, characterized in that, The connecting pipe is fixedly connected to the inner peripheral wall of the transition member; Along the axial direction of the transition member, the connecting pipe does not intersect the centerline of the transition member.
8. The filter grid according to claim 1, characterized in that, The connecting flange is fitted around the outer periphery of the connecting pipe, and the connecting flange has a plurality of connecting holes spaced apart along its own circumference.
9. An offshore platform, characterized in that, It includes a pile driving pipeline and at least one filter grid as described in any one of claims 1 to 8, wherein the filter grid is disposed at the inlet of the pile driving pipeline.
10. The offshore platform according to claim 9, characterized in that, The pile driving pipeline is equipped with a mounting flange at the suction port, and the connecting flange is detachably connected to the mounting flange. The diameter of the connecting pipe is compatible with the pile driving pipeline.