Waterproof sealing structure of cabin cover flange

Abstract

The cabin cover flange waterproof sealing structure comprises a first sheet body and a second sheet body, the longitudinal sections and the transverse sections of the first sheet body and the second sheet body are arranged in an attached mode, a first sealing gasket and a second sealing gasket are arranged in gaps between the longitudinal sections and the transverse sections of the two sheet bodies respectively, and the transverse section of the first sheet body is provided with a fluctuating area. And a corresponding fluctuating area is arranged at the corresponding position of the second sheet body. Triple protection design is adopted, permeation paths of water and salt mist are prolonged, tiny gaps of the flanges are filled through a dual-sealing system, compared with an existing single sealing scheme, a leakage channel is thoroughly blocked, the anti-seepage effect is more comprehensive and stable, direct exposure is reduced through cooperation of an antioxidant modified EPDM sealing gasket and a lap joint structure, and the service life is prolonged. The flexible characteristic of the silica gel sealing layer can buffer vibration of a cabin, displacement abrasion of a sealing piece is avoided, the sealing service life is prolonged to more than 5 years compared with an existing structure, and the maintenance frequency is reduced.

Description

Technical Field

[0001] This invention relates to the field of wind power equipment technology, and in particular to a waterproof sealing structure for a nacelle cover flange. Background Technology

[0002] The existing engine room cover flange sealing structure has technical drawbacks such as low sealing reliability, weak anti-aging and vibration resistance, short service life, and high maintenance costs, which cannot meet the long-term (more than 5 years) stable operation requirements of the engine room cover.

[0003] Existing single-seal structures (rubber gaskets, sealant, single labyrinth seals) lack sufficient sealing redundancy and are prone to seal failure due to high and low temperature aging, vibration loads, and slight flange displacement, which in turn leads to moisture and salt spray penetration.

[0004] The sealing structure has weak resistance to environmental interference. Outdoor high and low temperature cycles (-40℃~60℃) and ultraviolet radiation will cause the seals to age and crack, as well as the engine room vibration and salt spray corrosion will damage the sealing effect.

[0005] The sealing structure has poor adaptability and is inconvenient to install and maintain. Summary of the Invention

[0006] To address the aforementioned technical problems, a waterproof sealing structure for the engine room cover flange is provided.

[0007] To achieve the above objectives, in a preferred embodiment of the present invention, the invention is configured to include a first sheet and a second sheet, wherein the longitudinal and transverse sections of the first and second sheets are abutted together, and a sealing gasket one and a sealing gasket two are respectively provided in the gap between the longitudinal and transverse sections of the two sheets. The transverse section of the first sheet is provided with an undulating area, and the corresponding undulating area is provided at the corresponding location of the second sheet.

[0008] In a preferred embodiment of the present invention, both the first sealing gasket and the second sealing gasket are flexible sealing gaskets.

[0009] In a preferred embodiment of the present invention, the sealing gasket is further configured as an antioxidant modified EPDM sealing gasket.

[0010] In a preferred embodiment of the present invention, the second sealing gasket is a weather-resistant silicone sealing layer.

[0011] In a preferred embodiment of the invention, the undulating region of the transverse segment may be further configured such that it includes adjacent raised and recessed segments.

[0012] In a preferred embodiment of the invention, the second sheet body corresponding to the recessed segment is an extension segment with a break.

[0013] Beneficial effects: The waterproof sealing structure for a cabin cover flange of the present invention solves the problems of insufficient sealing redundancy in existing single sealing structures (rubber gasket, sealant, single labyrinth seal), which are prone to seal failure due to high and low temperature aging, vibration load, and slight flange displacement, leading to moisture and salt spray penetration. It improves the reliability of waterproof sealing at the flange connection and eliminates the risk of leakage. It also solves the problem of weak resistance to environmental interference in existing sealing structures, overcoming the aging and cracking of seals caused by outdoor high and low temperature cycles (-40℃~60℃) and ultraviolet radiation, as well as the damage to the sealing effect caused by cabin vibration and salt spray corrosion, extending the service life of the sealing structure and reducing the cost of frequent maintenance and replacement. Furthermore, it solves the problems of poor adaptability and inconvenient installation and maintenance of existing sealing structures, reducing the requirements for flange machining accuracy, avoiding misalignment and deformation of seals during installation, and simplifying the subsequent disassembly and maintenance process. It eliminates the need for destructive cleaning of sealing materials, reduces damage to the flange end face, and improves the convenience of installation and maintenance. Attached Figure Description

[0014] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments.

[0015] Figure 1 This is a schematic diagram of the overall structure of the present invention.

[0016] In the diagram, 1 is the first piece; 2 is the second piece; 3 is the first sealing gasket; 4 is the second sealing gasket; 5 is the extension section; 6 is the raised section; and 7 is the recessed section. Detailed Implementation

[0017] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of the present invention.

[0018] like Figure 1 As shown, a waterproof sealing structure for a cabin cover flange includes a first piece 1 and a second piece 2. The longitudinal and transverse sections of the first piece 1 and the second piece 2 are abutted together. Sealing gasket 1 3 and sealing gasket 2 4 are respectively provided in the gap between the longitudinal and transverse sections of the two pieces. The transverse section of the first piece 1 is provided with an undulating area, and the corresponding undulating area is provided at the corresponding position of the second piece 2.

[0019] Both sealing gasket 3 and sealing gasket 4 are flexible sealing gaskets. Utilizing the flexible sealing properties of silicone, they buffer the minute flange displacements caused by engine room vibrations, thus solving the problem of weak vibration resistance in existing sealing structures.

[0020] The sealing gasket 3 is an antioxidant-modified EPDM sealing gasket. The addition of antioxidants and UV absorbers solves the problem of easy oxidation and cracking in ordinary EPDM, extending the service life of the sealing gasket.

[0021] The second sealing gasket 4 is a weather-resistant silicone sealing layer. Compared with existing single sealing solutions, the sealing redundancy is greatly improved, which can fill the tiny gaps in the flange and completely block the leakage channel.

[0022] The undulating area of ​​the transverse segment includes adjacent raised segments 6 and recessed segments 7.

[0023] The second piece 2 corresponds to the recessed section with an extension section 5 having a break. The extension section 5 laterally overlaps and covers the outside of the protruding section 6 of the first piece 1, forming a physical protective barrier and extending the penetration path of rainwater and salt spray. Compared with existing flat-joint flanges, it significantly improves the ability to resist strong winds, heavy rain, and salt spray outdoors.

[0024] It should be noted that in this article, relational terms such as first and second are used only to distinguish one entity from another, and do not necessarily require or imply any such actual relationship or order between these entities.

[0025] The examples above are merely illustrative of the present invention and do not constitute a limitation on the scope of protection of the present invention. All designs that are the same as or similar to the present invention are within the scope of protection of the present invention.

Claims

1. A waterproof sealing structure for a cabin cover flange, characterized in that, It includes a first piece (1) and a second piece (2). The longitudinal and transverse sections of the first piece (1) and the second piece (2) are attached to each other. Sealing gasket 1 (3) and sealing gasket 2 (4) are respectively provided in the gap between the longitudinal and transverse sections of the two pieces. The transverse section of the first piece (1) is provided with an undulating area, and the corresponding undulating area is provided at the corresponding position of the second piece (2).

2. The waterproof sealing structure for a cabin cover flange according to claim 1, characterized in that, Both the first sealing gasket (3) and the second sealing gasket (4) are flexible sealing gaskets.

3. The waterproof sealing structure for a cabin cover flange according to claim 2, characterized in that, The sealing gasket (3) is an antioxidant modified EPDM sealing gasket.

4. The waterproof sealing structure for a cabin cover flange according to claim 3, characterized in that, The second sealing gasket (4) is a weather-resistant silicone sealing layer.

5. The waterproof sealing structure for a cabin cover flange according to claim 4, characterized in that, The undulating area of ​​the transverse segment includes adjacent raised segments (6) and recessed segments (7).

6. The waterproof sealing structure for a cabin cover flange according to claim 5, characterized in that, The second piece (2) corresponds to the concave segment as the extended segment (5) with a break.

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