Composite insulation distribution board for ship power distribution

Abstract

The utility model belongs to the technical field of power equipment, and particularly relates to a composite insulation distribution board for ship power distribution. Comprising a covering layer, an insulating layer, a honeycomb layer and a connecting layer, the covering layer comprises an upper covering layer and a lower covering layer, the insulating layer, the connecting layer and the honeycomb layer are arranged below the upper covering layer, and the connecting layer, the insulating layer and the lower covering layer are arranged below the honeycomb layer. And the covering layer, the insulating layer, the honeycomb layer and the connecting layer are connected together through mould pressing. In practical application, the overall weight of the composite insulation distribution board is reduced through the honeycomb layer, the overall stability of the composite insulation distribution board is enhanced, and the heat dissipation efficiency of each element on the distribution board can be improved through the honeycomb layer.

Description

Technical Field

[0001] The utility model belongs to the technical field of power equipment, and particularly relates to a composite insulation distribution board for ship power distribution. Background Art

[0002] Most of the existing ship distribution boxes or distribution boards are assembled, which are composed of a support skeleton and a panel. The distribution board panel in the cabinet is made of iron. The iron panel has a low cost, but on ships, the distribution board is required to have good moisture-proof and anti-corrosion properties. The iron distribution board is prone to rust and difficult to be subjected to anti-corrosion treatment.

[0003] A composite insulation distribution board for power distribution with the patent publication number of CN205272704U includes a body. The body includes a solid wood substrate. Insulating rubber layers are provided on both the upper end face and the lower end face of the solid wood substrate. An asbestos mesh is inlaid in the inner cavity of the insulating rubber layer. A fiberglass sheet is provided on the outside of the upper insulating rubber layer. Flow guiding grooves are evenly provided on the surface of the fiberglass sheet. A phenolic resin layer is provided on the outside of the lower insulating rubber layer. The above device has a large overall weight, a high cost, and poor overall heat dissipation performance. Therefore, it is urgent for those skilled in the art to solve the above technical problems. Content of the Utility Model

[0004] The technical problem to be solved by the utility model is to provide a composite insulation distribution board for ship power distribution aiming at the above-mentioned deficiencies of the prior art. The composite insulation distribution board for ship power distribution reduces the overall weight of the device through a honeycomb layer and improves the heat dissipation efficiency of the device. The upper covering layer and the lower covering layer protect the device on the ship and are not easily corroded.

[0005] To solve the above technical problems, the technical solution adopted by the utility model is:

[0006] A composite insulation distribution board for ship power distribution, used for the installation of circuit components and lines, includes a covering layer, an insulating layer, a honeycomb layer and a connecting layer. The covering layer includes an upper covering layer and a lower covering layer. The upper covering layer is provided with the insulating layer, the connecting layer and the honeycomb layer below it. The honeycomb layer is provided with the connecting layer, the insulating layer and the lower covering layer below it;

[0007] The honeycomb layer is composed of a plurality of honeycomb sub-units. The wall thickness of the honeycomb sub-unit is 0.5 mm, and the height of the honeycomb sub-unit is 30 mm.

[0008] Although the wall of a single honeycomb cell is very thin (0.5 mm), multiple such cells support each other through their geometric structure, forming a structure similar to a natural honeycomb. This structure can disperse external forces very efficiently, providing excellent compressive and flexural strength while maintaining a low self-weight. Since most of the volume of the honeycomb structure is air, this design greatly reduces the amount of material used, thus significantly reducing the overall weight. This is particularly important for application areas that require strict weight control, such as aerospace and shipbuilding, as it can reduce energy consumption and improve efficiency. The air gaps in the honeycomb structure act as natural thermal and acoustic insulation barriers, effectively blocking heat transfer and sound propagation, providing favorable conditions for equipment that needs to maintain a specific temperature or has acoustic insulation requirements. Although the stainless steel material has a relatively high coefficient of thermal expansion, the thin-walled honeycomb structure can reduce the impact of thermal expansion and contraction on the overall structure because the air in the structure can act as a buffer medium, allowing the material to have a small expansion space during temperature changes without causing stress concentration. Although the cost of stainless steel material may be relatively high, by using the thin-walled honeycomb design, the amount of material used can be effectively reduced, thus achieving cost savings while ensuring high performance. The setting of the positioning screw holes ensures the precise installation and fixation of the distribution board on the ship structure, reducing displacement or loosening caused by vibration and improving the stability and reliability of the entire electrical system.

[0009] Furthermore, the covering layer is made of glass fiber reinforced plastic. Wire holes and component mounting grooves are also provided on the upper covering layer, and positioning screw holes are provided on the lower covering layer.

[0010] Glass fiber reinforced plastic combines the high strength of glass fiber and the toughness of plastic, can withstand higher mechanical loads and impacts, is wear-resistant and not easily broken, which is crucial for ships that often face harsh sea conditions. It can effectively resist physical damage and chemical corrosion in the marine environment and extend the service life of the distribution board. Compared with traditional metal materials, FRP has a lower density, which can significantly reduce the weight of the distribution board. This has a direct positive impact on reducing the total weight of the ship, improving fuel efficiency, and reducing emissions. FRP itself is a good insulating material, which can effectively prevent electrical short circuits and leakage, improving electrical safety, especially in the humid marine environment, which is particularly important. The pre-set wire holes and component mounting grooves on the upper covering layer, as well as the positioning screw holes on the lower covering layer, make the installation of electrical components more convenient and improve the assembly efficiency. These precise pre-reserved designs reduce the workload of on-site hole opening and the risk of installation errors. Due to the reasonable structure design, when electrical components need to be replaced or maintained, they can be quickly located and disassembled, reducing the maintenance difficulty and time cost.

[0011] Furthermore, the edges of the upper covering layer and the lower covering layer are connected by a sealing strip.

[0012] The sealing strip can effectively block the intrusion of external environmental factors such as moisture, salt spray, and dust. Especially in a high-humidity and corrosion-prone environment like a ship, good sealing is crucial for protecting internal electrical components from damage, preventing short circuits and corrosion. The sealing strip connects the upper and lower cover layers, which can increase the stability of the overall structure and reduce the risk of delamination or detachment caused by vibration or external impact, ensuring the reliable operation of the distribution board under complex sea conditions. Compared with welding or mechanical fastening, using a sealing strip for connection is a more convenient and rapid installation method, reducing the assembly time and also lowering the requirements for professional skills, facilitating on-site construction. If maintenance or inspection of the distribution board is required in the future, the sealing strip is easier to disassemble and reinstall compared to other fixing methods, which is beneficial for quickly carrying out maintenance operations and reducing maintenance costs. The sealing strip can be customized according to the shapes and sizes of different parts to adapt to various complex edge structures, ensuring the sealing effect without affecting the flexibility of the overall design. Selecting a suitable insulating sealing strip can also enhance the electrical insulation of the distribution board, avoiding electrical safety problems caused by improper edge treatment and further ensuring the safe operation of the ship's electrical system.

[0013] Furthermore, the insulating layer is made of cross-linked polyethylene, and an insulating coating is also sprayed on the insulating layer.

[0014] Cross-linked polyethylene is a high-performance insulating material with extremely low dielectric loss and high breakdown voltage strength, which can effectively prevent current leakage and ensure the safe operation of electrical equipment. It is especially suitable for use in the high-voltage and high-current ship distribution environment. XLPE has good thermal stability and can maintain good electrical and mechanical properties even at relatively high temperatures, is not easily aged, extends the service life of the distribution board, and reduces the frequency of maintenance and replacement. Cross-linked polyethylene has good resistance to most chemicals and is not easily corroded, making it suitable for various harsh environments and chemical exposures that may be encountered on ships. Spraying an insulating coating on the XLPE insulating layer further enhances the insulation performance and may also have properties such as waterproofing, moisture-proofing, and anti-fouling flashover, improving the adaptability and reliability of the entire distribution board in a harsh marine environment. The XLPE material has both high mechanical strength and a certain degree of flexibility, can well adapt to the mechanical stress generated during installation or ship operation, and reduces the insulation failure caused by physical damage.

[0015] Furthermore, the connecting layer is made of epoxy resin, the honeycomb layer is made of stainless steel material, and the honeycomb layer connects the insulating layer through the connecting layer.

[0016] Epoxy resin has extremely high adhesion and mechanical strength, which can firmly bond the honeycomb layer with the insulation layer and other structural layers, ensuring the stability and durability of the overall structure. Even under the severe vibration and impact conditions during ship navigation, good connection can be maintained. Epoxy resin itself is also a good insulating material, which can enhance the electrical insulation of the switchboard, prevent current leakage, and ensure electrical safety. The stainless steel honeycomb layer has excellent corrosion resistance and can maintain structural stability in harsh marine environments such as salt spray and humidity without rusting, thus extending the service life. The stainless steel honeycomb structure design provides an extremely high strength-to-weight ratio through thin-walled honeycomb cells, which not only reduces the overall weight of the switchboard but also maintains the necessary strength and rigidity, contributing to improving the energy efficiency of the ship. Stainless steel materials have good thermal conductivity, and the combination with the epoxy resin connection layer can form an effective heat transfer path, helping to improve the heat dissipation efficiency, reduce local overheating, and protect electrical components. Epoxy resin cures quickly and is easy to mold, suitable for mass production; the stainless steel honeycomb structure provides the possibility of standardized and modular design, simplifying the complexity of on-site installation and maintenance.

[0017] The utility model has the following beneficial effects:

[0018] 1. Adopting the honeycomb layer design, especially using stainless steel materials, significantly reduces the overall weight while maintaining the necessary structural strength and rigidity. The design supports modular production and installation, and the switchboard can be flexibly customized and adapted according to the electrical configurations of different ships, with a wide range of applications for the device.

[0019] 2. The covering layer is made of glass fiber-reinforced plastic, which combines the high strength of glass fiber and the toughness of plastic, can withstand higher mechanical loads and impacts, is wear-resistant and not easily broken. The covering layer can effectively resist physical damage and chemical corrosion in the marine environment, extending the service life of the switchboard. Brief Description of the Drawings

[0020] Figure 1 is the exploded view of the structure of the utility model.

[0021] Figure 2 is the top view of the utility model.

[0022] Figure 3 is the structural schematic diagram of the upper covering layer of the utility model.

[0023] Figure 4 is the structural schematic diagram of the lower covering layer of the utility model.

[0024] Among them are: 1 - covering layer; 11 - upper covering layer; 111 - wire hole; 112 - component mounting groove; 12 - lower covering layer; 121 - positioning screw hole; 2 - insulating layer; 21 - first insulating layer; 22 - second insulating layer; 3 - connecting layer; 31 - first connecting layer; 32 - second connecting layer; 4 - honeycomb layer. Specific embodiments

[0025] The present utility model will be further described in detail below in conjunction with the accompanying drawings and specific preferred embodiments.

[0026] In the description of the present utility model, it should be understood that the orientation or positional relationship indicated by terms such as "left side", "right side", "upper part", "lower part", 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. "First", "second", etc. do not represent the importance of components, so it cannot be understood as a limitation to the present utility model. The specific dimensions adopted in this embodiment are only for illustrating the technical solution by way of example and do not limit the protection scope of the present utility model.

[0027] Referring to Figure 1 and Figure 2 , it can be seen that a composite insulation distribution board for ship power distribution is successively composed of an upper covering layer 1, a first insulating layer 21, a first connecting layer 31, a honeycomb layer 4, a second connecting layer 32, a second insulating layer 22 and a lower covering layer 12. A wire hole 111 and a component mounting groove 112 are provided on the upper covering layer 11, and a mounting screw hole 121 is provided on the lower covering layer 12.

[0028] In one embodiment, when manufacturing the distribution board, first prepare all raw materials, including the upper covering layer 11 (glass fiber reinforced plastic), the first insulating layer 21 (crosslinked polyethylene), the first connecting layer 31 (epoxy resin), the honeycomb layer 4 (stainless steel), the second connecting layer 32 (epoxy resin), the second insulating layer 22 (crosslinked polyethylene) and the lower covering layer 12 (glass fiber reinforced plastic), and ensure that these materials are cut according to the designed dimensions and undergo necessary pretreatment;

[0029] According to the final dimensions and structure of the distribution board, a precision mold is designed. The internal structure of the mold should be completely matched with the distribution board, including the positions of the wire hole 111, the component mounting groove 112 and the mounting screw hole 121;

[0030] In the mold, first place the lower covering layer 12 to ensure the correct position of the mounting screw hole 121;

[0031] Then, successively lay the second insulating layer 22, the second connecting layer 32, the honeycomb layer 4, the first connecting layer 31, and the first insulating layer 21;

[0032] Finally, place the upper cover layer 11 precisely on the top, ensuring that the wire holes 111 and the component mounting grooves 112 are aligned;

[0033] Place a sealing strip at the edges of the upper cover layer 11 and the lower cover layer 12 to ensure good sealing during the molding process;

[0034] Close the assembled components with the mold and send them into the molding press;

[0035] Turn on the molding press, apply appropriate pressure and heat to the curing temperature of the connection layer 3 (epoxy resin), so that the epoxy resin flows and fully penetrates into the contact surfaces of each layer of materials, while completing the tight bonding and shape fixation of each layer of materials.

[0036] Maintain the pressure and temperature until the connection layer 3 (epoxy resin) is completely cured. The curing time needs to be set according to the material properties and the mold temperature;

[0037] After curing, stop heating and let the mold cool naturally or use a cooling system to accelerate cooling;

[0038] After the temperature drops to a safe range, open the mold and take out the composite insulation distribution board;

[0039] Inspect the distribution board after demolding and perform necessary trimming and cleaning;

[0040] Conduct electrical performance tests and mechanical strength tests to ensure that the product meets the design requirements and relevant industry standards.

[0041] Refer to Figure 3 and Figure 4 It can be seen that multiple wire holes 111 and multiple component mounting grooves 112 are provided on the upper cover layer 11, and positioning screw holes 121 are provided on the lower cover layer 12.

[0042] In one embodiment, when setting the wire holes 111,

[0043] First, according to the circuit design drawing, pre-plan the positions of the wire holes 111 to ensure that all cables can pass through smoothly, while avoiding crossing and congestion and keeping the wiring neat and orderly. The wire holes 111 should avoid the load-bearing areas and reinforcement areas of the upper cover layer so as not to weaken the structural strength. The diameter of the wire holes 111 should be slightly larger than the outer diameter of the cables, leaving a certain margin for easy threading. At the same time, consider the bending radius of the cables to avoid cable damage caused by excessive bending. The shape of the wire holes 111 is usually circular or elliptical, which is convenient for the cables to penetrate and reduces the stress concentration at the edges. The edges of the wire holes 111 should be smooth without burrs, and chamfering or rounding can be used to reduce the wear on the cables and facilitate the threading operation.

[0044] When setting the component installation groove 112, according to the size and installation requirements of the electrical components to be installed (such as circuit breakers, relays, etc.), precisely design the length, width, and depth of the installation groove to ensure that the components can fit tightly and be fixed within the component installation groove 112. The distance between components should ensure sufficient heat dissipation space and maintenance space. The component installation groove 112 can be designed with positioning points, buckles, or threaded holes, etc., to facilitate the use of screws, buckles, or other fixing parts to firmly install the components in the groove. It is also necessary to consider the convenience of component disassembly for future maintenance or replacement. For components that require waterproof and dustproofing, when designing the component installation groove 112, it should be considered to add a sealing ring or use sealant to ensure a good seal is formed between the component and the upper cover layer 11 after installation, preventing moisture and dust from invading.

[0045] The preferred embodiments of the present invention have been described in detail above. However, the present invention is not limited to the specific details in the above embodiments. Within the scope of the technical concept of the present invention, various equivalent transformations can be made to the technical solutions of the present invention, and these equivalent transformations all belong to the protection scope of the present invention.

Claims

1. A composite insulated switchboard for ship power distribution, used for the installation of circuit elements and lines, characterized in that: It includes a covering layer, an insulating layer, a honeycomb layer and a connecting layer; the covering layer includes an upper covering layer and a lower covering layer, the insulating layer includes a first insulating layer and a second insulating layer, and the connecting layer includes a first connecting layer and a second connecting layer; the upper covering layer is provided with the first insulating layer, the first connecting layer and the honeycomb layer below, and the second connecting layer, the second insulating layer and the lower covering layer are provided below the honeycomb layer; The honeycomb layer is composed of a plurality of honeycomb subunits, the wall thickness of the honeycomb subunits is 0.5 mm, and the height of the honeycomb subunits is 30 mm.

2. A composite insulated switchboard for ship power distribution according to claim 1, characterized in that: The covering layer is made of glass fiber reinforced plastic, the upper covering layer is also provided with wire holes and component installation grooves, and the lower covering layer is provided with positioning screw holes.

3. A composite insulated switchboard for ship power distribution according to claim 1, characterized in that: The edges of the upper cover layer and the lower cover layer are connected by a sealing strip.

4. A composite insulated switchboard for ship power distribution according to claim 1, characterized in that: The insulating layer is made of cross-linked polyethylene and is sprayed with insulating paint.

5. The composite insulated switchboard for ship power distribution according to claim 1, characterized in that: The connecting layer is made of epoxy resin, the honeycomb layer is made of stainless steel, and the honeycomb layer is connected to the insulating layer through the connecting layer.

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