High strength pipe flange with dual containment
By installing upper and lower protective components at the top and bottom of the flange base, and combining them with bolt and nut connections and sealing sponge gaskets, a double-layer protection is formed, which solves the problem of poor sealing performance of traditional flanges and achieves high-strength and stable pipe connections.
Patent Information
- Application Number
- CN202521529534.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-07-22
- Publication Date
- 2026-08-25
- Estimated Expiration
- 2035-07-22
AI Technical Summary
Traditional flange structures have poor sealing performance and complex protective structures, leading to unstable pipeline connections.
A high-strength pipe flange with double protective layers is designed. By installing upper and lower protective components at the upper and lower ends of the flange base respectively, and connecting them with bolts and nuts, combined with a sealing sponge gasket, a double-layer protection is formed, resulting in good sealing performance.
This achieves double-layer protection for the pipe flange, improves sealing performance, prevents micro-leakage, and enhances connection stability.
Smart Images

Figure CN224680325U_ABST
Abstract
Description
Technical Field
[0001] This invention relates to the field of pipe flange technology, and more specifically, to a high-strength pipe flange with a double protective layer. Background Technology
[0002] Pipe flanges, as key connecting components in piping systems, are widely used in petrochemical, marine engineering, and municipal water supply and drainage fields. Traditional flange structures mainly consist of a flange plate, bolt holes, and gaskets, with pipe connections achieved through bolt tightening. However, some modern flange structures exhibit issues such as weak sealing and complex protective structures.
[0003] Therefore, it is necessary to provide a high-strength pipe flange with double protective layers to solve the above problems. Summary of the Invention
[0004] Based on the aforementioned problems in the existing technology, the purpose of this application is to provide a high-strength pipe flange with double protective layers, achieving double protection and good sealing performance.
[0005] The technical solution adopted by this application to solve its technical problem is: a high-strength pipe flange with double protective layers, including a flange base, a connecting plate installed at the front end of the flange base, a protective gasket fixedly installed at the connection between the connecting plate and the flange base, and a pipe sleeve fixedly installed at the front end of the connecting plate.
[0006] Furthermore, an upper protective member is provided at the upper end of the flange base, and a lower protective member is provided at the lower end of the flange base. The width of the upper and lower protective members is the same as the gap between the connecting plate and the flange base.
[0007] Furthermore, bolts are threadedly connected to both sides of the upper protective member, and threaded holes are opened on both sides of the lower protective member. Nuts are placed at the lower end of the threaded holes, and the bolts and nuts are threadedly connected.
[0008] Furthermore, a protrusion is fixedly installed on the upper end of the protective pad, and a slot is opened on the inner side of the upper and lower protective parts, which engages with the protrusion.
[0009] Furthermore, sealing sponge pads are fixedly installed on the inner surfaces of the upper and lower protective components.
[0010] The beneficial effects of this utility model are: the upper protective component is placed on the upper end of the flange base, covering the gap between the connecting plate and the flange base. The same steps are followed to place the lower protective component on the lower end of the flange base. As the upper and lower protective components are pressed inward, the protrusion is embedded in the slot, forming a snap-fit fixation, thus initially fixing the protective component at the flange connection. Attached Figure Description
[0011] The accompanying drawings, which form part of this specification, are used to provide a further understanding of this utility model. The illustrative embodiments and descriptions of this utility model are used to explain this utility model and do not constitute an undue limitation thereof. In the drawings: Figure 1 This is an overall schematic diagram of a high-strength pipe flange with double protective layers according to this application; Figure 2 for Figure 1 Schematic diagram of the middle flange; In the diagram: 1. Flange base; 2. Connecting plate; 3. Pipe sleeve; 4. Lower protective component; 5. Upper protective component; 6. Threaded hole; 7. Bolt; 8. Protective gasket; 9. Protrusion; 10. Slot; 11. Sealing sponge gasket; 12. Nut. Detailed Implementation
[0012] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other. The present invention will now be described in detail with reference to the accompanying drawings and embodiments.
[0013] It should be noted that, unless otherwise specified, all technical and scientific terms used in this application have the same meaning as commonly understood by one of ordinary skill in the art to which this application pertains.
[0014] In this invention, unless otherwise stated, the orientations used, such as "up" and "down," generally refer to the direction shown in the accompanying drawings, or to the vertical, perpendicular, or gravitational direction; similarly, for ease of understanding and description, "left" and "right" generally refer to the left and right shown in the accompanying drawings; "inner" and "outer" refer to the inner and outer contours of each component itself, but the above directional terms are not used to limit this invention.
[0015] like Figure 1-2 As shown, this application provides a high-strength pipe flange with double protective layers, including a flange base 1, a connecting plate 2 installed at the front end of the flange base 1, a protective gasket 8 fixedly installed at the connection between the connecting plate 2 and the flange base 1, and a pipe sleeve 3 fixedly installed at the front end of the connecting plate 2.
[0016] An upper protective element 5 is provided at the upper end of the flange base 1, and a lower protective element 4 is provided at the lower end of the flange base 1. The width of the upper protective element 5 and the lower protective element 4 is the same as the gap between the connecting plate 2 and the flange base 1.
[0017] Bolts 7 are threadedly connected to both sides of the upper protective component 5, and threaded holes 6 are opened on both sides of the lower protective component 4. Nuts 12 are placed at the lower end of the threaded holes 6, and the bolts 7 are threadedly connected to the nuts 12.
[0018] A protrusion 9 is fixedly installed on the upper end of the protective pad 8, and a slot 10 is opened on the inner side of the upper protective part 5 and the lower protective part 4, which engages with the protrusion 9.
[0019] Sealing sponge pads 11 are fixedly installed on the inner surfaces of the upper protective component 5 and the lower protective component 4.
[0020] Specifically, the protective gasket 8 with the protrusion 9 is placed at the connection between the flange base 1 and the connecting plate 2. The connecting plate 2 is installed on the front end of the flange base 1, ensuring that the protective gasket 8 is pressed between the two. Then, the sleeve 3 is fixed to the front end of the connecting plate 2. Finally, the upper protective piece 5 is placed on the upper end of the flange base 1, covering the gap between the connecting plate 2 and the flange base 1. The same steps are followed to place the lower protective piece 4 on the lower end of the flange base 1. While the upper protective piece 5 and the lower protective piece 4 are pressed inward, the protrusion 9 is embedded in the slot 10 to form a snap-fit fixation, thus initially fixing the protective piece at the flange connection.
[0021] After placement, the workers pass the bolts 7 through the holes on both sides of the upper protective part 5, and then screw the lower end of the bolts 7 into the threaded holes 6 on both sides of the lower protective part 4. Then, they tighten the nuts 12 and bolts 7, tightly clamping the upper protective part 5 and the lower protective part 4 above and below the flange base 1 and firmly covering the gap. During the tightening of the bolts 7, the sealing sponge pads 11 fixed on the inner surfaces of the upper protective part 5 and the lower protective part 4 are pressed against the corresponding surfaces of the flange base 1 and the connecting plate 2, forming an effective sealing layer.
[0022] Through the above steps, the pipe flange is protected by a double layer of protection through the combination of the protective gasket 8, the upper protective element 5, and the lower protective element 4, thus preventing internal micro-leakage.
[0023] Obviously, the embodiments described above are only some embodiments of this invention, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of this invention without inventive effort should fall within the scope of protection of this invention.
[0024] It should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the exemplary embodiments according to this application. As used herein, the singular form is intended to include the plural form as well, unless the context clearly indicates otherwise. Furthermore, it should be understood that when the terms "comprising" and / or "including" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof.
[0025] It should be noted that the terms "first," "second," etc., used in the specification, claims, and accompanying drawings of this application are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate so that the embodiments of this application described herein can be implemented in sequences other than those illustrated or described herein.
[0026] The above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention. Various modifications and variations can be made to the present invention by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.
[0027] The above description is merely a preferred embodiment of this invention. The scope of protection of this invention is not limited to the above embodiments. All technical solutions falling within the scope of this invention's concept are within the scope of protection of this invention. It should be noted that for those skilled in the art, any improvements and modifications made without departing from the principle of this invention should also be considered within the scope of protection of this invention.
Claims
1. A high-strength pipe flange with double protective layers, characterized in that: The flange includes a flange base (1), a connecting plate (2) is installed at the front end of the flange base (1), a protective gasket (8) is fixedly installed at the connection between the connecting plate (2) and the flange base (1), a pipe sleeve (3) is fixedly installed at the front end of the connecting plate (2), an upper protective member (5) is provided at the upper end of the flange base (1), a lower protective member (4) is provided at the lower end of the flange base (1), and the width of the upper protective member (5) and the lower protective member (4) is the same as the gap between the connecting plate (2) and the flange base (1).
2. A high-strength pipe flange with double protective layers according to claim 1, characterized in that: The upper protective member (5) is threaded with bolts (7) on both sides, and the lower protective member (4) is provided with threaded holes (6) on both sides. A nut (12) is placed at the lower end of the threaded hole (6), and the bolts (7) and the nut (12) are threadedly connected.
3. A high-strength pipe flange with double protective layers according to claim 1, characterized in that: The upper end of the protective pad (8) is fixedly installed with a protrusion (9), and the inner sides of the upper protective member (5) and the lower protective member (4) are provided with a slot (10), which is engaged with the protrusion (9).
4. A high-strength pipe flange with double protective layers according to claim 3, characterized in that: Sealing sponge pads (11) are fixedly installed on the inner surfaces of the upper protective member (5) and the lower protective member (4).