Corrosion-resistant flange for pipeline

Abstract

The utility model discloses an anti-corrosion flange for a pipeline, which belongs to the technical field of connecting flanges and comprises two groups of flange bodies, an oil film layer, an anti-corrosion layer, a plurality of groups of fasteners and a connecting check ring, the two groups of flange bodies are in mortise and tenon joint with each other, and flange mounting rings, a plurality of mounting holes and ring grooves are arranged on the two groups of flange bodies. The two sets of flange bodies are wrapped with the anti-corrosion layers, and the anti-corrosion layers are wrapped with the oil film layers. The multiple sets of fasteners are connected through the multiple mounting holes and fix the two sets of flange bodies, and the connecting check ring is connected to the two sets of flange bodies in a clamped mode. The multiple sets of fasteners penetrate through the multiple installation holes to connect and fix the two sets of flange bodies, the surfaces of the two sets of flange bodies are sequentially wrapped by the anti-corrosion layers and the oil film layers from inside to outside, and the connecting check rings are connected into the two sets of flange bodies in a clamped mode, so that good anti-corrosion performance is provided for the two sets of flange bodies in the using process, and the service life of the flange bodies is prolonged. And the sealing performance of the joint is also ensured.

Description

Technical Field

[0001] The utility model belongs to the technical field of connecting flanges, and in particular relates to a corrosion-resistant flange for pipelines. Background Art

[0002] A pipe flange is usually a disk or ring forming the outer edge at the end of a pipe, which is mainly used to join one pipe to another pipe or a pipe fitting. Through a pair of flanges that cooperate with each other, the pipes can be well connected.

[0003] At present, in modern industrial production such as petroleum, chemical industry, and water treatment, the conveying fluid medium mostly contains corrosive media, which requires that the pipe flanges with connecting functions need to have good corrosion resistance and sealing properties. Utility Model Content

[0004] The utility model aims to provide a corrosion-resistant flange for pipelines so as to provide good corrosion resistance and sealing performance during the use of the flange.

[0005] In order to achieve the above-mentioned purpose, the utility model adopts the following technical scheme: a corrosion-resistant flange for a pipeline, comprising two groups of flange bodies, an oil film layer, an anti-corrosion layer, multiple groups of fasteners and a connecting stop ring, the two groups of flange bodies are connected to each other by mortise and tenon joints, the two groups of flange bodies are provided with flange mounting rings, multiple mounting holes and ring grooves, the two groups of flange bodies are wrapped with the anti-corrosion layer on the outside, the anti-corrosion layer is wrapped with the oil film layer on the outside, the multiple groups of fasteners are connected and fixed to the two groups of flange bodies through the multiple mounting holes, the connecting stop ring is a U-shaped structure, and the connecting stop ring is clamped on the two groups of flange bodies.

[0006] As a further description of the above technical solution:

[0007] The flange mounting ring is provided with an external thread and a plurality of flange sealing rings, the plurality of flange sealing rings are arranged at equal distances on the flange mounting ring, and the depth of the plurality of flange sealing rings is greater than the tooth height of the external thread.

[0008] As a further description of the above technical solution:

[0009] A sealing groove is provided on the outer side of the plurality of mounting holes on one group of the flange bodies, and a boss is provided on the outer side of the plurality of mounting holes on another group of the flange bodies. A sealing ring is installed in the sealing groove, and the boss is inserted into the sealing groove.

[0010] As a further description of the above technical solution:

[0011] One group of flange bodies is provided with a flange connection ring, and another group of flange bodies is provided with a flange connection groove. The flange connection ring is inserted into the flange connection groove, and the contact surface between the flange connection ring and the flange connection groove is an inclined surface.

[0012] As a further description of the above technical solution:

[0013] The fastener is used in combination with a bolt and a nut.

[0014] As a further description of the above technical solution:

[0015] The connecting stop ring is made of a rubber-like soft material.

[0016] As a further description of the above technical solution:

[0017] Two groups of annular shoulders are symmetrically arranged at both ends of the connecting stop ring, and the two groups of annular shoulders are nested in the annular groove.

[0018] In summary, due to the adoption of the above technical solution, the beneficial effects of the utility model are:

[0019] 1. In the utility model, two groups of flange bodies are connected and fixed through multiple mounting holes by multiple groups of fasteners. The surfaces of the two groups of flange bodies are sequentially wrapped with anti-corrosion layers and oil film layers from the inside to the outside, and the interiors of the two groups of flange bodies are clamped with connecting stop rings, which provide good corrosion resistance for the two groups of flange bodies during use and ensure the sealing of the connection.

[0020] 2. In the utility model, the connecting stop ring is installed on the two sets of flange bodies by nesting the ring shoulder in the ring groove. The soft rubber property of the connecting stop ring facilitates the installation of the connecting stop ring. The two sets of ring shoulders cooperate with the ring grooves on the two sets of flange bodies to provide a guarantee for the sealing of the connection between the two sets of flanges. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 This is an overall schematic diagram of a corrosion-resistant flange for pipelines.

[0022] Figure 2 for Figure 1 Cross-sectional view of .

[0023] Figure 3 for Figure 2 Partial magnification Figure 1 .

[0024] Figure 4 for Figure 2 Partial magnification Figure 2 .

[0025] Figure 5 This is an exploded view of a corrosion-resistant flange for pipelines.

[0026] Legend:

[0027] 1. Flange body; 11. Flange mounting ring; 111. External thread; 112. Flange sealing ring; 12. Mounting hole; 121. Sealing groove; 122. Boss; 13. Ring groove; 2. Oil film layer; 3. Anti-corrosion layer; 4. Fastener; 5. Connecting stop ring; 6. Flange connecting ring; 7. Flange connecting groove; 8. Ring shoulder; 9. Sealing ring. DETAILED DESCRIPTION

[0028] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0029] See also Figure 1-5 The utility model provides a technical solution: a corrosion-resistant flange for a pipeline, comprising two groups of flange bodies 1, an oil film layer 2, an anti-corrosion layer 3, multiple groups of fasteners 4 and a connecting stop ring 5, the two groups of flange bodies 1 are connected to each other by mortise and tenon joints, the two groups of flange bodies 1 are provided with flange mounting rings 11, multiple mounting holes 12 and annular grooves 13, the two groups of flange bodies 1 are wrapped with the anti-corrosion layer 3 on the outside, the anti-corrosion layer 3 is wrapped with the oil film layer 2 on the outside, multiple groups of fasteners 4 are connected and fixed to the two groups of flange bodies 1 through multiple mounting holes 12, the connecting stop ring 5 is a Chinese-shaped structure, and the connecting stop ring 5 is clamped on the two groups of flange bodies 1, the surfaces of the two groups of flange bodies 1 are wrapped with the anti-corrosion layer 3 and the oil film layer 2 in sequence from the inside to the outside, multiple groups of fasteners 4 pass through multiple mounting holes 12 to tightly connect the two groups of flange bodies 1, and the two groups of flange bodies 1 are clamped with the connecting stop ring 5 inside, which provides good corrosion resistance for the two groups of flange bodies 1 during use and ensures the sealing of the connection;

[0030] The flange mounting ring 11 is provided with an external thread 111 and a plurality of flange sealing rings 112. The plurality of flange sealing rings 112 are arranged at equal distances on the flange mounting ring 11, and the depth of the plurality of flange sealing rings 112 is greater than the tooth height of the external thread 111, which is beneficial to thread sealing during the later pipeline installation;

[0031] A sealing groove 121 is provided on the outer side of the plurality of mounting holes 12 on one group of the flange bodies 1, and a boss 122 is provided on the outer side of the mounting holes 12 on another group of the flange bodies 1. A sealing ring 9 is installed in the sealing groove 121, and the boss 122 is inserted into the sealing groove 121. The mounting holes 12 at each position are sealed respectively to achieve a better sealing effect.

[0032] A flange connection ring 6 is provided on one group of flange bodies 1, and a flange connection groove 7 is provided on another group of flange bodies 1. The flange connection ring 6 is inserted into the flange connection groove 7, and the contact surface between the flange connection ring 6 and the flange connection groove 7 is an inclined surface, which plays a guiding role and facilitates the installation of the two groups of flange bodies 1;

[0033] The fasteners 4 are used in combination with bolts and nuts to install and fix the two sets of flange bodies 1 to ensure the tightness of the connection;

[0034] The connecting stop ring 5 is made of a soft rubber material, which is convenient for installing the connecting stop ring 5;

[0035] Two sets of annular shoulders 8 are symmetrically provided at both ends of the connecting stop ring 5, and the two sets of annular shoulders 8 are nested in the annular groove 13, so as to facilitate the connection stop ring 5 to be installed and fixed on the two sets of flange bodies 1, and the two sets of annular shoulders 8 have a better sealing effect.

[0036] Working principle: First, the surfaces of the two groups of flange bodies 1 are wrapped with an anti-corrosion layer 3 and an oil film layer 2 from the inside to the outside in turn, and multiple groups of fasteners 4 are connected and fixed to the two groups of flange bodies 1 through multiple mounting holes 12. During the use of the two groups of flange bodies 1, the oil film layer 2 and the anti-corrosion layer 3 cooperate with each other to provide them with good corrosion resistance; the flange mounting rings 11 of the two groups of flange bodies 1 are provided with external threads 111 and multiple flange sealing rings 112 to seal the threaded connection during the later installation of the pipeline; secondly, the outer sides of the multiple mounting holes 12 opened on the two groups of flange bodies 1 are respectively provided with bosses 122 and sealing grooves 121, and sealing rings 9 are installed in the sealing grooves 121, and the bosses 122 and the sealing rings 9 are inserted into each other. The sealing ring 9 is then pressed to provide a layer of protection for the sealing of the two groups of flange bodies 1. Furthermore, the two groups of flange bodies 1 are respectively provided with flange connecting rings 6 and flange connecting grooves 7. The inclined surface connection method is convenient for guiding the installation between the two groups of flange bodies 1. Finally, the connecting stop ring 5 is installed on the two groups of flange bodies 1 through the ring shoulder 8 nested in the ring groove 13. The soft rubber property of the connecting stop ring 5 facilitates the installation of the connecting stop ring 5, and the two groups of ring shoulders 8 cooperate with the ring grooves 13 on the two groups of flange bodies 1, providing a second layer of protection for the sealing of the two groups of flange bodies 1. Finally, while providing the two groups of flange bodies 1 with good corrosion resistance, the sealing of the two groups of flange connections is ensured.

[0037] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes within the technical scope disclosed by the present invention according to the technical scheme and the utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A corrosion-resistant flange for a pipeline, characterized in that: The invention comprises two groups of flange bodies (1), an oil film layer (2), an anti-corrosion layer (3), a plurality of groups of fasteners (4) and a connecting stop ring (5); the two groups of flange bodies (1) are connected to each other by mortise and tenon joints; the two groups of flange bodies (1) are provided with flange mounting rings (11), a plurality of mounting holes (12) and annular grooves (13); the two groups of flange bodies (1) are externally wrapped with the anti-corrosion layer (3); the anti-corrosion layer (3) is externally wrapped with the oil film layer (2); the plurality of groups of fasteners (4) are connected and fixed to the two groups of flange bodies (1) via the plurality of mounting holes (12); the connecting stop ring (5) is a U-shaped structure and is clamped on the two groups of flange bodies (1).

2. A corrosion-resistant flange for pipelines according to claim 1, characterized in that: The flange mounting ring (11) is provided with an external thread (111) and a plurality of flange sealing rings (112); the plurality of flange sealing rings (112) are arranged at equal distances on the flange mounting ring (11), and the depth of the plurality of flange sealing rings (112) is greater than the tooth height of the external thread (111).

3. A corrosion-resistant flange for pipeline according to claim 2, characterized in that: A sealing groove (121) is provided on the outer side of the plurality of mounting holes (12) on one group of the flange bodies (1), and a boss (122) is provided on the outer side of the plurality of mounting holes (12) on another group of the flange bodies (1), a sealing ring (9) is installed in the sealing groove (121), and the boss (122) is inserted into the sealing groove (121).

4. A corrosion-resistant flange for pipeline according to claim 3, characterized in that: A flange connection ring (6) is provided on one group of flange bodies (1), and a flange connection groove (7) is provided on another group of flange bodies (1). The flange connection ring (6) is inserted into the flange connection groove (7), and the contact surface between the flange connection ring (6) and the flange connection groove (7) is an inclined surface.

5. The corrosion-resistant flange for pipeline according to claim 4, characterized in that: The fastener (4) is used in combination with a bolt and a nut.

6. The corrosion-resistant flange for pipeline according to claim 5, characterized in that: The connecting stop ring (5) is made of a soft rubber material.

7. The corrosion-resistant flange for pipeline according to claim 6, characterized in that: Two groups of annular shoulders (8) are symmetrically arranged at both ends of the connecting stop ring (5), and the two groups of annular shoulders (8) are nested in the annular groove (13).

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