An anti-corrosion flange assembly

Abstract

The utility model relates to flange technical field, concretely is a kind of anticorrosive flange assembly, including first flange and second flange, first flange, second flange all include base body, the inner side wall of base body is coated with protective inner layer, the outer side wall of base body is coated with protective outer layer, protective inner layer includes inner wall metal combination layer.The utility model protective inner layer adopts the structure of inner wall metal combination layer, inner wall corrosion-resistant barrier layer, inner wall wear layer, inner wall metal combination layer ensures the firm adhesion of coating system and base body, avoids the risk of peeling, inner wall corrosion-resistant barrier layer as main anticorrosive layer, effectively blocks medium penetration, inner wall wear layer as first line of defense, resists fluid scouring wear, protects the coating and base body below, three layers cooperate, overcome the defect of single coating performance single, same protective outer layer is blocked by three layers Cooperation Intrusion of water vapor and corrosive ion.

Description

Technical Field

[0001] This utility model relates to the field of flange technology, specifically to a corrosion-resistant flange assembly. Background Technology

[0002] Flange assemblies are core components in piping systems used to connect pipes, valves, pumps, and other equipment. They are widely used in industries such as chemical, petroleum, pharmaceutical, and water treatment.

[0003] Traditional flanges face severe challenges when conveying corrosive fluids such as acids, alkalis, and salts, especially corrosive slurries containing solid particles. The fluid continuously corrodes and erodes the inner wall of the flange channel, leading to thinning of the flange wall, sealing failure, and leakage accidents. This not only pollutes the environment but also threatens production safety. Furthermore, the outer wall of traditional flanges typically only undergoes simple anti-corrosion treatment (such as painting), and long-term exposure to industrial atmospheres and rainwater will also cause corrosion. Although this does not directly affect the seal, it weakens the overall structural strength of the flange. Therefore, a corrosion-resistant flange assembly is proposed. Utility Model Content

[0004] The purpose of this invention is to provide a corrosion-resistant flange assembly to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a corrosion-resistant flange assembly, comprising a first flange and a second flange, both the first flange and the second flange comprising a substrate, the inner wall of the substrate being coated with a protective inner layer, the outer wall of the substrate being coated with a protective outer layer, the protective inner layer comprising an inner wall metal bonding layer, the inner wall metal bonding layer being coated on the inner wall of the substrate, the inner wall of the inner wall metal bonding layer being coated with an inner wall corrosion-resistant barrier layer, the inner wall of the inner wall corrosion-resistant barrier layer being coated with an inner wall wear-resistant layer, the protective outer layer comprising an outer wall metal bonding layer, the outer wall metal bonding layer being coated on the outer wall of the substrate, the outer wall of the outer wall metal bonding layer being coated with an outer wall protective layer, and the outer wall of the outer wall protective layer being coated with an outer wall surface layer.

[0006] As a further preferred embodiment of this technical solution, the substrate is made of stainless steel.

[0007] As a further preferred embodiment of this technical solution: the inner wall metal bonding layer is made of nickel-aluminum alloy powder coating, the inner wall corrosion-resistant barrier layer is made of nickel-based alloy coating, and the inner wall wear-resistant layer is made of ceramic material coating.

[0008] As a further preferred embodiment of this technical solution: the outer wall metal bonding layer is made of aluminum alloy coating, the outer wall protective layer is made of epoxy micaceous iron oxide coating, and the outer wall surface layer is made of polyurethane coating.

[0009] As a further preferred embodiment of this technical solution: two positioning blocks are symmetrically fixedly connected to the left side wall of the first flange, and two positioning grooves are symmetrically opened on the right side wall of the second flange.

[0010] As a further preferred embodiment of this technical solution: a sealing ring is fixedly connected to the left side wall of the first flange, and a sealing groove is provided on the right side wall of the second flange.

[0011] Compared with the prior art, the beneficial effects of this utility model are:

[0012] This utility model's protective inner layer adopts a structure consisting of an inner wall metal bonding layer, an inner wall corrosion-resistant barrier layer, and an inner wall wear-resistant layer. The inner wall metal bonding layer ensures a firm adhesion between the coating system and the substrate, avoiding the risk of peeling. The inner wall corrosion-resistant barrier layer, as the main anti-corrosion layer, effectively blocks the penetration of media. The inner wall wear-resistant layer, as the first line of defense, resists fluid erosion and wear, protecting the underlying coating and substrate. The three layers work together to overcome the shortcomings of single-layer coatings with limited performance. Similarly, the protective outer layer, through the synergy of the three layers, blocks the intrusion of water vapor and corrosive ions. Different multi-layer coating systems are designed to address the strong corrosion and erosion of the flange's inner wall, and the rainwater and atmospheric corrosion of the outer wall. The inner wall coating focuses on the synergistic effect of corrosion prevention and wear resistance, while the outer wall coating focuses on the synergistic effect of barrier protection and weather resistance, greatly improving the protective effect and bringing convenience to the use of flanges. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the left-side structure of this utility model;

[0014] Figure 2 This is a front view structural diagram of the present utility model;

[0015] Figure 3 This is a schematic diagram of the structure of the first flange and the positioning block in this utility model;

[0016] Figure 4 This is a schematic diagram of the structure of the second flange and the positioning groove in this utility model;

[0017] Figure 5 This is a cross-sectional view of the substrate in this utility model;

[0018] Figure 6 This is a cross-sectional view of the protective inner layer in this utility model;

[0019] Figure 7 This is a cross-sectional view of the protective outer layer in this utility model.

[0020] In the picture:

[0021] 1. First flange; 2. Second flange; 3. Base body; 4. Inner protective layer; 5. Outer protective layer; 6. Positioning block; 7. Positioning groove; 8. Sealing ring; 9. Sealing groove;

[0022] 41. Inner wall metal bonding layer; 42. Inner wall corrosion-resistant barrier layer; 43. Inner wall wear-resistant layer;

[0023] 51. External wall metal bonding layer; 52. External wall protective layer; 53. External wall surface layer. Detailed Implementation

[0024] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings. Examples of the embodiments are shown in the drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this application, and should not be construed as limiting this application. 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.

[0025] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "installation," "connection," "linking," and "equipment" should be interpreted broadly. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to mechanical connections or electrical connections; they can refer to direct connections or indirect connections through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0026] Please see Figure 1-7This utility model provides a technical solution: a corrosion-resistant flange assembly, including a first flange 1 and a second flange 2. Both the first flange 1 and the second flange 2 include a base 3. The inner wall of the base 3 is coated with a protective inner layer 4, and the outer wall of the base 3 is coated with a protective outer layer 5. The protective inner layer 4 includes an inner wall metal bonding layer 41, which is coated on the inner wall of the base 3. The inner wall of the inner wall metal bonding layer 41 is coated with an inner wall corrosion-resistant barrier layer 42, and the inner wall of the inner wall corrosion-resistant barrier layer 42 is coated with an inner wall wear-resistant layer 43. The protective outer layer 5 includes an outer wall metal bonding layer 51, which is coated on the outer wall of the base 3. The outer wall of the outer wall metal bonding layer 51 is coated with an outer wall protective layer 52, and the outer wall of the outer wall protective layer 52 is coated with an outer wall surface layer 53. The protective inner layer 4 uses an inner wall metal... The structure consists of a bonding layer 41, an inner wall corrosion-resistant barrier layer 42, and an inner wall wear-resistant layer 43. The inner wall metal bonding layer 41 ensures a firm adhesion between the coating system and the substrate 3, avoiding the risk of peeling. The inner wall corrosion-resistant barrier layer 42 serves as the main anti-corrosion layer, effectively blocking media penetration. The inner wall wear-resistant layer 43 acts as the first line of defense, resisting fluid erosion and protecting the underlying coating and substrate 3. The three layers work together to overcome the shortcomings of single-layer coatings in terms of limited performance. Similarly, the outer protective layer 5, through the synergy of the three layers, blocks the intrusion of water vapor and corrosive ions. Different multi-layer coating systems were designed to address the strong corrosion and erosion on the inner wall of the flange, as well as the rainwater and atmospheric corrosion on the outer wall. The inner wall coating focuses on the synergistic effect of corrosion prevention and wear resistance, while the outer wall coating focuses on the synergistic effect of barrier protection and weather resistance, greatly improving the protective effect and bringing convenience to the use of the flange.

[0027] In this embodiment, specifically: the material of the base 3 is stainless steel; the characteristics of stainless steel can improve the corrosion resistance and mechanical strength of the flange.

[0028] In this embodiment, specifically: the inner wall metal bonding layer 41 is made of nickel-aluminum alloy powder coating, the inner wall corrosion-resistant barrier layer 42 is made of nickel-based alloy coating, and the inner wall wear-resistant layer 43 is made of ceramic material coating; the inner wall metal bonding layer 41 is mainly used to enhance the bonding strength between the substrate 3 and the subsequent coating, and to provide a certain degree of corrosion resistance; the inner wall corrosion-resistant barrier layer 42 is dense, and its main function is to resist the corrosion and penetration of chemical media; the inner wall wear-resistant layer 43 has extremely high hardness and wear resistance, and its main function is to resist the scouring of fluids and the wear of solid particles.

[0029] In this embodiment, specifically: the outer wall metal bonding layer 51 is made of aluminum alloy coating, the outer wall protective layer 52 is made of epoxy micaceous iron oxide coating, and the outer wall surface layer 53 is made of polyurethane coating; the outer wall metal bonding layer 51 provides bonding force with the substrate 3, the outer wall protective layer 52 is dense and impermeable, effectively blocking the intrusion of water vapor and corrosive ions, and the outer wall surface layer 53 has excellent UV resistance, weather resistance and anti-aging properties, and can provide a good appearance.

[0030] In this embodiment, specifically: two positioning blocks 6 are symmetrically fixedly connected to the left side wall of the first flange 1, and two positioning grooves 7 are symmetrically opened on the right side wall of the second flange 2; by inserting the positioning blocks 6 into the positioning grooves 7, quick positioning can be achieved when connecting the first flange 1 and the second flange 2.

[0031] In this embodiment, specifically: a sealing ring 8 is fixedly connected to the left side wall of the first flange 1, and a sealing groove 9 is provided on the right side wall of the second flange 2; the sealing ring 8 is made of fluororubber and is suitable for high temperature and strong acid and alkali environments. When the first flange 1 and the second flange 2 are connected, the sealing ring 8 will be squeezed into the sealing groove 9 to increase the sealing performance of the flange assembly.

[0032] The working principle of this utility model is as follows: By inserting the positioning block 6 into the positioning groove 7, rapid positioning can be achieved when connecting the first flange 1 and the second flange 2. When connecting the first flange 1 and the second flange 2, the sealing ring 8 will be squeezed into the sealing groove 9, increasing the sealing performance of the flange assembly. The protective inner layer 4 adopts a structure of an inner wall metal bonding layer 41, an inner wall corrosion-resistant barrier layer 42, and an inner wall wear-resistant layer 43. The inner wall metal bonding layer 41 ensures the firm adhesion of the coating system to the substrate 3, avoiding the risk of peeling. The inner wall corrosion-resistant barrier layer 42, as the main anti-corrosion layer, effectively blocks the penetration of media. The inner wall wear-resistant layer 43 serves as the first line of defense, resisting fluid erosion and protecting the underlying coating and substrate 3. The three layers work together to overcome the shortcomings of single-layer coatings in terms of limited performance. Similarly, the outer protective layer 5, through the synergy of the three layers, blocks the intrusion of water vapor and corrosive ions. Different multi-layer coating systems were designed to address the strong corrosion and erosion of the flange's inner wall, as well as the rainwater and atmospheric corrosion of the outer wall. The inner wall coating focuses on the synergistic effect of corrosion prevention and wear resistance, while the outer wall coating focuses on the synergistic effect of barrier protection and weather resistance, greatly improving the protective effect and bringing convenience to the use of the flange.

[0033] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A corrosion-resistant flange assembly, characterized in that: The system includes a first flange (1) and a second flange (2). Both the first flange (1) and the second flange (2) include a base (3). The inner wall of the base (3) is coated with a protective inner layer (4), and the outer wall of the base (3) is coated with a protective outer layer (5). The protective inner layer (4) includes an inner wall metal bonding layer (41), which is coated on the inner wall of the base (3). The inner wall metal bonding layer (41) has an inner side... The inner wall is coated with an inner wall corrosion-resistant barrier layer (42), and the inner sidewall of the inner wall corrosion-resistant barrier layer (42) is coated with an inner wall wear-resistant layer (43). The outer protective layer (5) includes an outer wall metal bonding layer (51), which is coated on the outer sidewall of the substrate (3). The outer sidewall of the outer wall metal bonding layer (51) is coated with an outer wall protective layer (52), and the outer sidewall of the outer wall protective layer (52) is coated with an outer wall surface layer (53).

2. The corrosion-resistant flange assembly according to claim 1, characterized in that: The substrate (3) is made of stainless steel.

3. The corrosion-resistant flange assembly according to claim 2, characterized in that: The inner wall metal bonding layer (41) is made of nickel-aluminum alloy powder coating, the inner wall corrosion-resistant barrier layer (42) is made of nickel-based alloy coating, and the inner wall wear-resistant layer (43) is made of ceramic material coating.

4. The corrosion-resistant flange assembly according to claim 3, characterized in that: The outer wall metal bonding layer (51) is made of aluminum alloy coating, the outer wall protective layer (52) is made of epoxy micaceous iron oxide coating, and the outer wall surface layer (53) is made of polyurethane coating.

5. The corrosion-resistant flange assembly according to claim 4, characterized in that: The left side wall of the first flange (1) is symmetrically fixedly connected with two positioning blocks (6), and the right side wall of the second flange (2) is symmetrically provided with two positioning grooves (7).

6. The corrosion-resistant flange assembly according to claim 5, characterized in that: A sealing ring (8) is fixedly connected to the left side wall of the first flange (1), and a sealing groove (9) is provided on the right side wall of the second flange (2).

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