High-strength pressure-resistant glass fiber reinforced plastic flange
By adding reinforcing blocks, connecting rods, sealing rings, and corrosion-resistant coatings to the FRP flanges, the problem of insufficient strength in FRP flanges is solved, achieving high strength, pressure resistance, and corrosion resistance, extending service life, and improving installation stability.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- HEBEI ZHONGYU ENVIRONMENTAL PROTECTION EQUIPMENT CO LTD
- Filing Date
- 2025-07-07
- Publication Date
- 2026-05-19
AI Technical Summary
Fiberglass flanges have poor strength and are easily bent and damaged, affecting their service life.
By incorporating reinforcing blocks, connecting rods, sealing rings, spring rings, and corrosion-resistant and wear-resistant coatings at flange and pipe connections, structural strength and sealing performance are enhanced, and corrosion resistance is improved.
It improves the strength and service life of FRP flanges, enhances sealing performance and corrosion resistance, reduces wear, and improves installation stability.
Smart Images

Figure CN224261231U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of fiberglass flange technology, specifically to high-strength and pressure-resistant fiberglass flanges. Background Technology
[0002] Fiberglass flanges are pipe connection elements made of glass fiber reinforced plastic (FRP). They are mainly used to connect and seal pipes and equipment in piping systems. Fiberglass flanges are widely used due to their unique properties and wide range of applications, playing an important role in chemical, petroleum, and power industries.
[0003] Common fiberglass flanges also have some problems, such as: fiberglass flanges are easily damaged during use, fiberglass flanges have poor strength and are easily bent and damaged, which affects the service life of fiberglass flanges.
[0004] Therefore, we propose a high-strength, pressure-resistant fiberglass flange to improve upon the above-mentioned problems. Utility Model Content
[0005] The purpose of this invention is to provide a high-strength, pressure-resistant fiberglass flange to solve the problem mentioned in the background art that fiberglass flanges have poor strength, are easily bent and damaged, and thus affect their service life.
[0006] To achieve the above objectives, this utility model provides the following technical solution: a high-strength, pressure-resistant fiberglass flange, comprising a flange plate, characterized in that: a pipe is fixedly connected to the top of the flange plate, reinforcing blocks are fixedly connected to the left and right sides and the front and rear ends of the top of the flange plate, a first connecting rod is fixedly connected to the top of the reinforcing blocks, and a second connecting rod is fixedly connected to the bottom of the reinforcing blocks.
[0007] As a further technical solution of this utility model, the reinforcing block is fixedly connected to the bottom of the left and right sides and the front and rear ends of the pipe, and the first connecting rod is disposed at the top of the second connecting rod.
[0008] As a further technical solution of this utility model, the reinforcing block is fixedly connected to the bottom of the left and right sides and the front and rear ends of the pipe, and the first connecting rod is disposed at the top of the second connecting rod.
[0009] As a further technical solution of this utility model, alignment marks are machined at both ends of the flange, a sealing ring is provided on the inner side wall of the flange, a sealing gasket is fixedly connected to the bottom end of the flange, a fixing hole is opened at the inner edge of the flange, and a spring ring is provided at the top of the fixing hole.
[0010] As a further technical solution of this utility model, the fixing holes are provided in multiple sets, and the alignment marks are symmetrically distributed about the vertical center line of the flange.
[0011] As a further technical solution of this utility model, multiple sets of spring rings are provided, and the spring rings are distributed in a ring at the edge of the top of the flange.
[0012] As a further technical solution of this utility model, the inner wall of the flange and the pipe is coated with a first corrosion-resistant coating, the outer wall of the flange and the pipe is coated with a second corrosion-resistant coating, and the outer surface of the second corrosion-resistant coating is coated with a wear-resistant coating.
[0013] As a further technical solution of this utility model, the first corrosion-resistant coating and the wear-resistant coating have the same thickness, and the wear-resistant coating is disposed on the outer side wall of the flange.
[0014] Compared with the prior art, the beneficial effects of this utility model are: the high-strength pressure-resistant fiberglass flange not only increases the strength of the fiberglass flange and increases the sealing performance during use, but also protects the fiberglass flange;
[0015] (1) By setting up a reinforcing block, a first connecting rod and a second connecting rod, the reinforcing block can increase the strength between the flange and the pipe. It can not only increase the strength of the flange and the pipe to prevent bending damage at the connection between the flange and the pipe, but also prevent the pipe from being squeezed and causing the bottom of the pipe to be recessed. The second connecting rod is connected between the reinforcing blocks, which can further increase the strength of the reinforcing blocks, thereby increasing the service life of the flange and the pipe.
[0016] (2) By providing a gasket, sealing ring, alignment mark, spring ring and fixing hole, the alignment mark on the flange can be aligned with the alignment mark at the installation location, which facilitates the alignment of the fixing hole on the flange with the fixing hole at the installation location for flange fixing installation. The gasket can seal the flange connection, and the spring ring on the fixing hole can prevent the bolts inside the fixing hole from loosening, which can improve the stability of flange installation.
[0017] (3) By providing a first corrosion-resistant coating, a wear-resistant coating and a second corrosion-resistant coating, the first corrosion-resistant coating and the second corrosion-resistant coating can protect the flange and the pipe, prevent the flange and the pipe from being corroded by long-term use, the wear-resistant coating increases the wear resistance of the flange and the pipe, and reduces the wear of the flange during use. Applying the first corrosion-resistant coating, the wear-resistant coating and the second corrosion-resistant coating can further increase the service life of the flange and the pipe. Attached Figure Description
[0018] Figure 1 This is a frontal cross-sectional view of the present invention.
[0019] Figure 2 This is a top view cross-sectional structural diagram of the present invention;
[0020] Figure 3 This is a partial enlarged cross-sectional view of the flange of this utility model.
[0021] Figure 4 For the present utility model Figure 2 Enlarged cross-sectional view of point A in the middle.
[0022] In the diagram: 1. Flange; 2. Pipe; 3. Reinforcing block; 4. First connecting rod; 5. Second connecting rod; 6. Sealing gasket; 7. Sealing ring; 8. Alignment mark; 9. Spring ring; 10. Fixing hole; 11. First corrosion-resistant coating; 12. Wear-resistant coating; 13. Second corrosion-resistant coating. Detailed Implementation
[0023] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.
[0024] Please see Figure 1-4 The present invention provides an embodiment of a high-strength pressure-resistant fiberglass flange, comprising a flange 1, a pipe 2 fixedly connected to the top of the flange 1, reinforcing blocks 3 fixedly connected to the left and right sides and the front and rear ends of the top of the flange 1, a first connecting rod 4 fixedly connected to the top of the reinforcing blocks 3, and a second connecting rod 5 fixedly connected to the bottom of the reinforcing blocks 3.
[0025] The reinforcing block 3 is fixedly connected to the bottom of the left and right sides and the front and rear ends of the pipe 2. The first connecting rod 4 is set at the top of the second connecting rod 5. There are four sets of reinforcing blocks 3. The reinforcing blocks 3 are distributed in a ring at the bottom of the outside of the pipe 2.
[0026] Specifically, such as Figure 1 , Figure 2 and Figure 4 As shown, the reinforcing block 3 can increase the strength between the flange 1 and the pipe 2. It can not only increase the strength of the flange 1 and the pipe 2 to prevent bending damage at the connection between the flange 1 and the pipe 2, but also prevent the bottom of the pipe 2 from being crushed. The second connecting rod 5 is connected between the reinforcing blocks 3, which can further increase the strength of the reinforcing blocks 3, thereby increasing the service life of the flange 1 and the pipe 2.
[0027] Alignment marks 8 are machined at both ends of the flange 1. A sealing ring 7 is provided on the inner side wall of the flange 1. A sealing gasket 6 is fixedly connected to the bottom end of the flange 1. A fixing hole 10 is opened at the inner edge of the flange 1. A spring ring 9 is provided at the top of the fixing hole 10. There are multiple sets of fixing holes 10. The alignment marks 8 are symmetrically distributed about the vertical center line of the flange 1. There are multiple sets of spring rings 9. The spring rings 9 are distributed in a ring at the top edge of the flange 1.
[0028] Specifically, such as Figure 1 , Figure 2 and Figure 4 As shown, the alignment mark 8 on the flange 1 can be aligned with the alignment mark 8 at the installation location, thus facilitating the alignment of the fixing hole 10 on the flange 1 with the fixing hole 10 at the installation location for fixing the flange 1. The sealing gasket 6 can seal the connection of the flange 1, and the spring ring 9 on the fixing hole 10 can prevent the bolts inside the fixing hole 10 from loosening, thereby improving the stability of the flange 1 installation.
[0029] The inner walls of flange 1 and pipe 2 are coated with a first corrosion-resistant coating 11, the outer walls of flange 1 and pipe 2 are coated with a second corrosion-resistant coating 13, and the outer side of the second corrosion-resistant coating 13 is coated with a wear-resistant coating 12. The first corrosion-resistant coating 11 and the wear-resistant coating 12 have the same thickness, and the wear-resistant coating 12 is disposed on the outer wall of flange 1.
[0030] Specifically, such as Figure 3 As shown, the first corrosion-resistant coating 11 and the second corrosion-resistant coating 13 can protect the flange 1 and the pipe 2, preventing them from being corroded by long-term use. The wear-resistant coating 12 increases the wear resistance of the flange 1 and the pipe 2, reducing the wear of the flange 1 during use. Applying the first corrosion-resistant coating 11, the wear-resistant coating 12 and the second corrosion-resistant coating 13 can further increase the service life of the flange 1 and the pipe 2.
[0031] Working Principle: In use, the reinforcing block 3 increases the strength between the flange 1 and the pipe 2. This not only strengthens the connection between the flange 1 and the pipe 2, preventing bending damage, but also prevents the bottom of the pipe 2 from being crushed. The second connecting rod 5, connected between the reinforcing blocks 3, further increases the strength of the reinforcing blocks 3, thereby increasing the service life of the flange 1 and the pipe 2. The first corrosion-resistant coating 11 and the second corrosion-resistant coating 13 protect the flange 1 and the pipe 2, preventing corrosion during prolonged use. The wear-resistant coating 12 increases the wear resistance of the flange 1 and the pipe 2, reducing the wear of the flange 1 during use. Applying the first corrosion-resistant coating 11, the wear-resistant coating 12, and the second corrosion-resistant coating 13 can further increase the service life of the flange 1 and the pipe 2. The alignment mark 8 on the flange 1 can be aligned with the alignment mark 8 at the installation location, thus facilitating the alignment of the fixing hole 10 on the flange 1 with the fixing hole 10 at the installation location for fixing the flange 1. The sealing gasket 6 can seal the connection of the flange 1. The spring ring 9 on the fixing hole 10 can prevent the bolts inside the fixing hole 10 from loosening, which can improve the stability of the flange 1 installation.
[0032] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.
Claims
1. A high-strength, pressure-resistant fiberglass flange, comprising a flange (1), characterized in that: The top of the flange (1) is fixedly connected to a pipe (2), and the left and right sides and the front and rear ends of the top of the flange (1) are respectively fixedly connected to reinforcing blocks (3). The top of the reinforcing blocks (3) is fixedly connected to a first connecting rod (4), and the bottom of the reinforcing blocks (3) is fixedly connected to a second connecting rod (5).
2. The high-strength, pressure-resistant fiberglass flange according to claim 1, characterized in that: The reinforcing block (3) is fixedly connected to the bottom of the left and right sides and the front and rear ends of the pipe (2), and the first connecting rod (4) is set at the top of the second connecting rod (5).
3. The high-strength, pressure-resistant fiberglass flange according to claim 1, characterized in that: The reinforcing blocks (3) are provided in four groups, and the reinforcing blocks (3) are arranged in a ring at the bottom of the outside of the pipe (2).
4. The high-strength, pressure-resistant fiberglass flange according to claim 1, characterized in that: Alignment marks (8) are machined at both ends of the flange (1). A sealing ring (7) is provided on the inner side wall of the flange (1). A sealing gasket (6) is fixedly connected to the bottom end of the flange (1). A fixing hole (10) is opened at the inner edge of the flange (1). A spring ring (9) is provided at the top of the fixing hole (10).
5. The high-strength, pressure-resistant fiberglass flange according to claim 4, characterized in that: The fixing holes (10) are provided in multiple sets, and the alignment marks (8) are symmetrically distributed about the vertical center line of the flange (1).
6. The high-strength, pressure-resistant fiberglass flange according to claim 4, characterized in that: Multiple sets of spring coils (9) are provided, and the spring coils (9) are distributed in a ring at the edge of the top of the flange (1).
7. The high-strength, pressure-resistant fiberglass flange according to claim 1, characterized in that: The inner walls of the flange (1) and the pipe (2) are coated with a first corrosion-resistant coating (11), the outer walls of the flange (1) and the pipe (2) are coated with a second corrosion-resistant coating (13), and the outer surface of the second corrosion-resistant coating (13) is coated with a wear-resistant coating (12).
8. The high-strength, pressure-resistant fiberglass flange according to claim 7, characterized in that: The first corrosion-resistant coating (11) and the wear-resistant coating (12) have the same thickness, and the wear-resistant coating (12) is disposed on the outer side wall of the flange (1).