Ship sea valve box grating structure
The integrated high-strength composite material grid structure solves the problems of large weight, high cost, complex installation and high navigation resistance of existing shipboard seabed valve box grids, and achieves lightweight, low cost and high efficiency grid function integration, improving service life and impact resistance.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- WUHU SHIPYARD CO LTD
- Filing Date
- 2025-06-13
- Publication Date
- 2026-05-15
AI Technical Summary
Existing shipboard subsea valve box grid structures are heavy, costly, complex to install, and generate significant navigation resistance. Furthermore, traditional designs are difficult to clean efficiently, affecting their service life.
The hull structure adopts an integrated design, and the grid structure is made of high-strength composite materials or alloy materials through 3D printing or molding. The grid is integrated with the hull, with multiple openings and spacers, and the surface is coated with anti-corrosion coating and electroplating layer to form an integral grid structure.
It reduces hull weight and material costs, simplifies the installation process, reduces the risk of failure, improves impact resistance and resistance to biofouling, and extends service life.
Smart Images

Figure CN224241202U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the field of ship component technology, and more specifically, it relates to a ship seabed valve box grid structure. Background Technology
[0002] In shipbuilding and marine engineering, subsea valve box gratings are critical components used to protect subsea valves, pumps, and other equipment, preventing marine life and debris from entering the system while ensuring smooth water flow. Traditional gratings are typically made of metal or composite materials and fixed by welding or bolting, which presents the following problems: 1. Weight and cost: Metal gratings are heavy, increasing ship load and fuel consumption, and are also costly in terms of materials. 2. Ship navigation resistance: The grating lines at the openings in the outer plate are not smooth enough, increasing ship navigation resistance and fuel consumption, leading to higher operating costs. 3. Installation complexity: Traditional installation methods are complex, time-consuming, and require specialized equipment and technicians.
[0003] Existing technology includes a device entitled "A FRP (Fiberglass Reinforced Plastic) Ship Openable and Closable FRP Grating Device" (publication number CN217918298U). This technology provides an openable and closable FRP grating device for a FRP ship, relating to the field of marine technology. It includes a ship bottom plate, with a FRP grating opening and closing mechanism movably installed on the bottom of the bottom plate. The mechanism comprises a stainless steel hinge and an openable and closable FRP grating movably installed on one side. The other side of the stainless steel hinge is fixedly installed to the bottom of the ship bottom plate. The openable and closable FRP grating device for a FRP ship provided by this invention uses a stainless steel hinge to movably connect one side of the openable and closable FRP grating to the ship bottom, and then uses multiple stainless steel pins to movably engage the other side of the openable and closable FRP grating with the ship bottom structure. This allows for convenient opening and closing of the grating by pushing open the stainless steel pins, enabling cleaning of both sides of the grating. This solves the problem of difficult cleaning of the grating at the water passage of a fixed sea valve box, and the risk of damage to the hull during disassembly and reassembly. This technology does not address the technical issues or solutions of this application. Utility Model Content
[0004] The technical problem to be solved by this utility model is to provide a simple structure for a ship's seabed valve box grid structure that integrates the grid function into the hull structure, reduces the use of additional materials, lowers the weight of the hull, requires less frequent maintenance, and improves the service life, in order to address the shortcomings of the existing technology.
[0005] To solve the above-mentioned technical problems, the technical solution adopted by this utility model is as follows:
[0006] This utility model is a marine subsea valve box grid structure. A subsea valve box grid area is provided on the hull structure. The subsea valve box grid area has multiple openings. Spacers are provided between adjacent openings. The spacers and the subsea valve box grid area are an integral structure. The multiple openings and multiple spacers form a grid structure.
[0007] Each partition bar is equipped with a reinforcing rib, or the joint between the partition bar and the seabed valve box grid area is equipped with a reinforcing rib.
[0008] The hull structure is formed into a grid structure using 3D printing or molding.
[0009] The hull structure is made of high-strength, corrosion-resistant composite or alloy materials.
[0010] The surface of the lattice structure of the hull is provided with an anti-corrosion coating.
[0011] The surface of the lattice structure of the hull structure is provided with an electroplated layer.
[0012] The width and length of the multiple openings in the seabed valve box grid area are the same.
[0013] The width and length of the multiple partitions in the seabed valve box grid area are the same.
[0014] The multiple partition bars in the seabed valve box grid area are arranged in parallel.
[0015] The working principle and beneficial effects of this utility model are as follows:
[0016] The marine subsea valve box grating structure described in this utility model features an outer hull plating on the ship's structure. The grating structure is directly machined into the outer hull plating during fabrication. Specifically, a subsea valve box grating area is defined on the outer hull plating, and multiple openings are machined into this area. Spacers are formed between adjacent openings, and the spacers and the subsea valve box grating area are an integral structure. This multi-opening and multi-spacer-forming grating structure prevents marine life and debris from entering while ensuring smooth water flow. This utility model integrates the hull structure and grating structure into a single design, directly embedding the grating function into the hull structure rather than installing it as a separate component. This integrated design reduces installation steps and connection points, lowers the risk of failure, reduces the use of additional materials, reduces costs, and improves the grating's impact resistance and resistance to biofouling. Attached Figure Description
[0017] The following is a brief explanation of the contents depicted in the accompanying drawings and the markings therein:
[0018] Figure 1 This is a schematic diagram of the structure of the ship's seabed valve box grid structure described in this utility model;
[0019] The labels in the attached diagram are as follows: 1. Seabed valve box grid area; 2. Opening; 3. Spacer bar; 4. Reinforcing rib. Detailed Implementation
[0020] The following description, with reference to the accompanying drawings, provides a more detailed explanation of the specific embodiments of this utility model, including the shape and structure of each component, the relative positions and connections between the parts, the functions and working principles of each part:
[0021] As attached Figure 1 As shown, this utility model is a marine subsea valve box grid structure. A subsea valve box grid area 1 is provided on the hull structure. The subsea valve box grid area 1 has multiple openings 2, and spacers 3 are provided between adjacent openings 2. The spacers 3 and the subsea valve box grid area 1 are an integral structure, and the multiple openings 2 and multiple spacers 3 form a grid structure. This structure addresses the shortcomings of existing technologies by proposing an improved technical solution. In this structural design, the hull structure has an outer hull plate, and the grid structure is directly fabricated during the outer hull plate processing. Specifically, the subsea valve box grid area 1 is defined on the outer hull plate, and multiple openings 2 are fabricated in the subsea valve box grid area 1. Spacers 3 are formed between adjacent openings 2, and the spacers 3 and the subsea valve box grid area 1 are an integral structure. In this way, the multiple openings 2 and multiple spacers 3 form a grid structure, which can prevent marine organisms and debris from entering while ensuring smooth water flow. The structure of this utility model integrates the hull structure and grid structure into the hull structure, directly integrating the grid function into the hull structure rather than installing it as a separate component. The integrated design of the grating structure with the hull structure reduces installation steps and connection points, lowers the risk of failure, reduces the use of additional materials, and reduces costs, while improving the grating's impact resistance and resistance to biofouling. The marine subsea valve box grating structure described in this invention is simple in structure, integrates the grating function into the hull structure, reduces the use of additional materials, lowers hull weight, requires less frequent maintenance, and extends service life.
[0022] Each spacer bar 3 is provided with a reinforcing rib 4, or a reinforcing rib 4 is provided at the junction of the spacer bar 3 and the seabed valve box grid area 1. In the above structure, the reinforcing ribs are optional; they can be installed or not, depending on actual needs. The reinforcing ribs are installed locally to improve the local strength of the grid structure, thereby increasing the overall strength and service life of the grid structure.
[0023] The hull structure is formed into a grid structure using 3D printing or molding. In this structure, the hull outer plating is manufactured using integrated molding technology (such as 3D printing or molding), allowing the grid structure to be directly formed after the entire hull outer plating is processed. By manufacturing the hull outer plating using these technologies, the manufacturing process ensures the grid's precision, strength, and durability.
[0024] The hull structure is made of high-strength, corrosion-resistant composite or alloy materials. The hull outer plating is made of high-strength, corrosion-resistant composite or alloy materials to ensure overall strength, effectively guaranteeing impact resistance and improving overall strength.
[0025] The surface of the hull structure's grating is coated with an anti-corrosion coating. The surface of the hull structure's grating is also coated with an electroplated layer. The anti-corrosion coating and electroplated layer can be applied as a single layer or in two layers to enhance the material's surface durability. In the combined application of the anti-corrosion coating and electroplated layer, the electroplated layer is typically located between the material surface and the anti-corrosion coating, i.e.: substrate (inner) → electroplated layer (middle) → anti-corrosion coating (outer).
[0026] The multiple openings 2 in the subsea valve box grid area 1 have the same width and length. The multiple partitions 3 in the subsea valve box grid area 1 also have the same width and length. The multiple partitions 3 in the subsea valve box grid area 1 are arranged in parallel. This structure limits the specific dimensions of the openings 2 and partitions 3 to ensure reliable isolation of marine life and debris while ensuring unobstructed water flow. The integrated structure ensures the overall strength of the grid structure.
[0027] The marine subsea valve box grating structure described in this utility model features an outer hull plating. During the fabrication of this plating, the grating structure is directly machined. Specifically, a subsea valve box grating area 1 is defined on the outer hull plating. Multiple openings 2 are machined into this area, with spacers 3 forming between adjacent openings 2. The spacers 3 and the subsea valve box grating area 1 are an integral structure. This multi-opening structure and spacers 3 form a grating structure that prevents marine life and debris from entering while ensuring smooth water flow. This integrated design of the hull and grating structures directly integrates the grating function into the hull structure, rather than installing it as a separate component. This integrated design reduces installation steps and connection points, lowers the risk of failure, reduces the use of additional materials, lowers costs, and simultaneously improves the grating's impact resistance and resistance to biofouling.
[0028] 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 the direct application of the inventive concept and technical solution to other situations without modification, are all within the protection scope of the present invention.
Claims
1. A marine subsea valve box grid structure, characterized in that: The hull structure is provided with a seabed valve box grid area (1), the seabed valve box grid area (1) is provided with multiple openings (2), and spacers (3) are provided between adjacent openings (2). The spacers (3) and the seabed valve box grid area (1) are an integral structure, and the multiple openings (2) and the multiple spacers (3) form a grid structure.
2. The shipboard subsea valve box grid structure according to claim 1, characterized in that: Each partition bar (3) is provided with a reinforcing rib (4), or the partition bar (3) and the seabed valve box grid area (1) are provided with a reinforcing rib (4).
3. The shipboard subsea valve box grid structure according to claim 1 or 2, characterized in that: The hull structure is formed into a grid structure using 3D printing or molding.
4. The shipboard subsea valve box grid structure according to claim 1 or 2, characterized in that: The hull structure is made of high-strength, corrosion-resistant composite or alloy materials.
5. The shipboard subsea valve box grid structure according to claim 1 or 2, characterized in that: The surface of the lattice structure of the hull is provided with an anti-corrosion coating.
6. The shipboard subsea valve box grid structure according to claim 1 or 2, characterized in that: The surface of the lattice structure of the hull structure is provided with an electroplated layer.
7. The shipboard subsea valve box grid structure according to claim 1 or 2, characterized in that: The width and length of the multiple openings (2) in the seabed valve box grid area (1) are the same.
8. The shipboard seabed valve box grid structure according to claim 7, characterized in that: The width and length of the multiple partition bars (3) in the seabed valve box grid area (1) are the same.
9. The marine subsea valve box grid structure according to claim 8, characterized in that: The multiple partition bars (3) of the seabed valve box grid area (1) are arranged in parallel.