Pipe flange with sealing structure

Abstract

This utility model discloses a pipeline flange with a sealing structure for use in the flange field. It includes a first sealing gasket and a second sealing gasket arranged coaxially. The double sealing gasket design effectively improves the sealing performance of the pipeline flange. The first and second sealing gaskets form two lines of defense, significantly reducing the risk of media leakage. Through the coordinated arrangement of the first and second sealing gaskets, a seepage hole, and a transparent cylinder, when a leak occurs at the second sealing gasket, the leaked medium overflows from the seepage hole into the transparent cylinder, allowing personnel to easily observe the leak. Furthermore, by filling the inside of the transparent cylinder with color-changing silica gel particles, these particles change color upon contact with the leaking medium. Workers can visually observe the color change through the transparent cylinder, thus promptly detecting sealing failures, facilitating repair and replacement, and preventing the leakage problem from escalating.

Description

Technical Field

[0001] This utility model relates to the field of flanges, and in particular to a pipeline flange with a sealing structure. Background Technology

[0002] A flange is a disc-shaped mechanical part used to connect pipes, valves or equipment. It achieves detachable fastening and sealing through bolts, gaskets and sealing structures, and is widely used in industrial piping systems.

[0003] A search revealed, for example, a flanged sealing structure for pipelines disclosed in patent publication number CN217634414U, comprising a pair of flanges, with a flanged sealing assembly fitted between the two flanges. A guide pipe connected to the flanges and the flanged sealing assembly is located at the other end of each flange. Several bolts are provided on the flanges, which are fitted through the flanged sealing assembly. Locking nuts are provided on the bolts, pressing against the flanges and threadedly engaging with the bolts. The flanged sealing assembly includes an outer ring, with flanged gaskets fitted between the upper and lower ends of the outer ring and the flanges. An axial sealing ring is provided on the outer circumference of the outer ring, fitted with the outer ring to improve the flange sealing performance.

[0004] Based on the above search and combined with existing technology, it was found that most pipeline flanges similar to those disclosed above use a single-ring sealing gasket. When a leak occurs at this sealing gasket, it is difficult for personnel to take timely countermeasures. Utility Model Content

[0005] 1. Technical problems to be solved

[0006] The core of this invention lies in its use of a first sealing gasket, a second sealing gasket, a seepage hole, and a transparent cylinder to solve the problem in existing technologies where leakage occurs at a single-ring sealing gasket, making it difficult for personnel to take timely countermeasures. It also facilitates reuse.

[0007] 2. Technical Solution

[0008] To solve the above problems, the present invention adopts the following technical solution.

[0009] A pipe flange with a sealing structure includes two flanges fixed to the ends of two pipe sections that are close to each other. A sealing structure is provided between the end faces of the two flanges away from the pipe. The sealing structure includes a first sealing gasket and a second sealing gasket. Both the first sealing gasket and the second sealing gasket are arranged coaxially with the flanges, and the inner diameter of the first sealing gasket is larger than the outer diameter of the second sealing gasket.

[0010] Both flanges have a first sealing ring groove and a second sealing ring groove that are adapted to the first sealing gasket and the second sealing gasket on their ends away from the pipeline. One of the flanges also has a seepage hole in the axial direction, and the seepage hole is located between the first sealing ring groove and the second sealing ring groove.

[0011] A transparent cylinder is sealed on the end face of the flange with a seepage hole near the pipeline. The transparent cylinder is connected to the seepage hole, and the end of the transparent cylinder away from the flange is a closed end.

[0012] With the coordinated arrangement of the first sealing gasket, the second sealing gasket, the seepage hole, and the transparent cylinder, when a leak occurs at the second sealing gasket, the leaked medium will overflow from the seepage hole into the transparent cylinder, making it convenient for personnel to check the leak situation.

[0013] Furthermore, the end face of the flange away from the pipeline is provided with a water-guiding annular seam that communicates with the seepage hole, and the water-guiding annular seam is arranged coaxially with the flange.

[0014] Furthermore, the inside of the transparent cylinder contains color-changing silica gel particles, the transparent cylinder is threadedly connected to the flange, and a sealing ring is provided between the transparent cylinder and the flange.

[0015] Furthermore, multiple seepage holes are provided, and these multiple seepage holes are equidistantly arranged along the water-guiding annular seam. Similarly, multiple transparent cylinders are provided, and each of the multiple transparent cylinders corresponds to one of the multiple seepage holes.

[0016] Furthermore, a permeable cotton ring is embedded on the inner side of the water-guiding ring seam.

[0017] Furthermore, a protective mesh is provided on the outer side of the transparent cylinder, which is fixed to the flange. A metal bracket is coaxially fixed at the end of the transparent cylinder away from the flange.

[0018] Furthermore, multiple connecting bolt holes are provided at equal intervals in a ring on both flanges, and the two flanges are fixed together by connecting bolts that engage with the connecting bolt holes.

[0019] 3. Beneficial Effects

[0020] Compared with existing technologies, the advantages of this utility model are:

[0021] (1) This solution uses a combination of a first sealing gasket, a second sealing gasket, a seepage hole and a transparent cylinder. When a leak occurs at the second sealing gasket, the leaked medium will overflow from the seepage hole into the transparent cylinder, making it convenient for personnel to check the leak.

[0022] (2) This solution involves filling the inside of a transparent tube with color-changing silica gel particles. When the color-changing silica gel particles inside the transparent tube come into contact with the leaking medium, they will change color (for example, from colorless to red). The staff can visually observe the color change through the transparent tube, thereby promptly detecting the sealing failure, facilitating maintenance and replacement, and preventing the leakage problem from escalating.

[0023] (3) This solution sets multiple seepage holes, and the multiple seepage holes are equidistant along the water guide ring seam. The transparent tube is also set in multiple ways, and the multiple transparent tubes are set in correspondence with the multiple seepage holes one by one, so that personnel can observe the color change of the color-changing silica gel particles in the transparent tube from any angle. Attached Figure Description

[0024] Figure 1 This is a schematic diagram of the structure of the present invention in its installed state;

[0025] Figure 2 This is a schematic diagram of the disassembled structure of this utility model;

[0026] Figure 3 This is a schematic diagram of the inner side of the flange of this utility model;

[0027] Figure 4 This is a schematic diagram of the outer side of the flange of this utility model;

[0028] Figure 5 This is a structural schematic diagram of the transparent tube and protective net tube of this utility model.

[0029] Explanation of the labels in the diagram:

[0030] 1. Pipeline; 2. Flange; 201. Connecting bolt hole; 202. First sealing ring groove; 203. Second sealing ring groove; 204. Leakage hole; 205. Water guiding ring seam; 3. Connecting bolt; 4. First sealing gasket; 5. Second sealing gasket; 6. Transparent cylinder; 61. Metal bracket; 7. Protective mesh cylinder; 8. Permeable cotton ring. Detailed Implementation

[0031] The technical solution will now be clearly and completely described with reference to the accompanying drawings in the embodiments of this utility model.

[0032] Example 1: Please refer to Figures 1-5 A pipeline flange with a sealing structure includes two flanges 2 respectively fixed to the close ends of two pipelines 1. The two flanges 2 are provided with a plurality of connecting screw holes 201 arranged in a ring at equal intervals. The two flanges 2 are fixed together by connecting bolts 3 cooperating with the connecting screw holes 201. A sealing structure is provided between the end faces of the two flanges 2 away from the pipeline 1.

[0033] Specifically, the sealing structure includes a first sealing gasket 4 and a second sealing gasket 5. Both the first sealing gasket 4 and the second sealing gasket 5 are coaxially arranged with the flange 2, and the inner diameter of the first sealing gasket 4 is larger than the outer diameter of the second sealing gasket 5. This sealing structure, through the design of double sealing gaskets, can effectively improve the sealing performance of the pipeline flange. The first sealing gasket 4 and the second sealing gasket 5 form two sealing defenses, which can significantly reduce the risk of medium leakage.

[0034] Both flanges 2 have a first sealing ring groove 202 and a second sealing ring groove 203 on their ends away from the pipeline 1, which are adapted to the first sealing gasket 4 and the second sealing gasket 5. This facilitates the positioning and installation of the sealing gaskets and increases the contact area between them, resulting in a better sealing effect.

[0035] To facilitate external observation of the sealing status of the second sealing gasket 5, a seepage hole 204 is provided on one of the flanges 2 along the axial direction. The seepage hole 204 is located between the first sealing ring groove 202 and the second sealing ring groove 203. A transparent cylinder 6 is installed on the end face of the flange 2 with the seepage hole 204 near the pipeline 1. The transparent cylinder 6 is connected to the seepage hole 204, and the end of the transparent cylinder 6 away from the flange 2 is a closed end.

[0036] Based on the above structural arrangement, when a leak occurs at the second sealing gasket 5, the leaked medium will overflow from the seepage hole 204 into the transparent cylinder 6, making it convenient for personnel to check the leak.

[0037] Furthermore, the inside of the transparent cylinder 6 contains color-changing silica gel granules. The transparent cylinder 6 is threadedly connected to the flange 2 for easy reuse. A sealing ring is installed between the transparent cylinder 6 and the flange 2. When the color-changing silica gel granules inside the transparent cylinder 6 come into contact with the leaking medium, they will change color (for example, from colorless to red). The staff can visually observe the color change through the transparent cylinder 6, thereby promptly detecting the seal failure, facilitating maintenance and replacement, and preventing the leakage problem from escalating.

[0038] Among them, the end face of the flange 2 away from the pipeline 1 is provided with a water guiding ring 205 that is connected to the seepage hole 204. The water guiding ring 205 is arranged coaxially with the flange 2. A permeable cotton ring 8 is embedded on the inner side of the water guiding ring 205. Of course, the permeable cotton ring 8 is in contact with the color-changing silica gel particles. The permeable cotton ring 8 can quickly permeate the leaked liquid medium to the transparent cylinder 6, so that the color-changing silica gel particles change color when they come into contact with the leaked medium.

[0039] Considering that the non-metallic transparent cylinder 6 is easily damaged by external impact, a protective net cylinder 7 is provided on the outside of the transparent cylinder 6. The protective net cylinder 7 is fixed to the flange 2, which can play a good protective role for the transparent cylinder 6. A metal bracket 61 is coaxially fixed at the end of the transparent cylinder 6 away from the flange 2, which makes it convenient for personnel to disassemble and install the transparent cylinder 6 with the help of tools and the metal bracket 61, thereby facilitating the replacement of color-changing silicone particles.

[0040] Example 2: Multiple seepage holes 204 are provided, and the multiple seepage holes 204 are equidistantly arranged along the water-guiding annular seam 205. Multiple transparent cylinders 6 are also provided, and the multiple transparent cylinders 6 are arranged one-to-one with the multiple seepage holes 204, so that personnel can observe the color change of the color-changing silica gel particles inside the transparent cylinder 6 from any angle.

[0041] The above description is merely a preferred embodiment of this utility model; it encompasses all the protection scope of this utility model. Any equivalent substitutions or modifications made by those skilled in the art within the technical scope disclosed in this utility model, based on the technical solution and its improved concept, should be covered within the protection scope of this utility model.

Claims

1. A pipe flange with a sealing structure, comprising two flanges (2) respectively fixed to one end of two pipe sections (1) that are close to each other, wherein a sealing structure is provided between the end faces of the two flanges (2) away from the pipe (1), characterized in that: The sealing structure includes a first sealing gasket (4) and a second sealing gasket (5). Both the first sealing gasket (4) and the second sealing gasket (5) are coaxially arranged with the flange (2), and the inner diameter of the first sealing gasket (4) is larger than the outer diameter of the second sealing gasket (5). Both flanges (2) are provided with a first sealing ring groove (202) and a second sealing ring groove (203) on the end face away from the pipeline (1) to match the first sealing gasket (4) and the second sealing gasket (5). One of the flanges (2) is also provided with a seepage hole (204) in the axial direction, and the seepage hole (204) is located between the first sealing ring groove (202) and the second sealing ring groove (203). A transparent cylinder (6) is sealed on the end face of the flange (2) with the seepage hole (204) near the pipeline (1). The transparent cylinder (6) is connected to the seepage hole (204), and the end of the transparent cylinder (6) away from the flange (2) is a closed end.

2. A pipe flange with a sealing structure according to claim 1, characterized in that: The flange (2) is provided with a water-guiding annular seam (205) connected to the seepage hole (204) on the end face away from the pipeline (1), and the water-guiding annular seam (205) is arranged coaxially with the flange (2).

3. A pipe flange with a sealing structure according to claim 2, characterized in that: The transparent cylinder (6) contains color-changing silica gel particles on its inner side. The transparent cylinder (6) is threadedly connected to the flange (2), and a sealing ring is provided between the transparent cylinder (6) and the flange (2).

4. A pipe flange with a sealing structure according to claim 2, characterized in that: Multiple seepage holes (204) are provided, and the multiple seepage holes (204) are equidistantly arranged along the water guide ring seam (205). Multiple transparent cylinders (6) are also provided, and the multiple transparent cylinders (6) are arranged one-to-one with the multiple seepage holes (204).

5. A pipe flange with a sealing structure according to claim 2, characterized in that: The inner side of the water-guiding annular seam (205) is fitted with a permeable cotton ring (8).

6. A pipe flange with a sealing structure according to claim 5, characterized in that: The transparent cylinder (6) is covered with a protective mesh cylinder (7), which is fixed to the flange (2). A metal bracket (61) is coaxially fixed to the end of the transparent cylinder (6) away from the flange (2).

7. A pipe flange with a sealing structure according to claim 1, characterized in that: The two flanges (2) are provided with a plurality of connecting screw holes (201) at equal intervals in a ring, and the two flanges (2) are fixed together by connecting bolts (3) in conjunction with the connecting screw holes (201).

Images