Sealing structure of aluminum alloy flange

Abstract

The utility model discloses a sealing structure of an aluminum alloy flange, which relates to the technical field of flanges and comprises a first flange, a second flange is arranged on one side of the first flange, an inner ring cylinder is fixed on one side, close to the second flange, of the first flange, and an outer ring cylinder is fixed on the outer side, located on the inner ring cylinder, of the first flange. A first annular sealing rubber sheet is bonded to the outer wall of an inner ring cylinder, a middle ring cylinder on a second flange can be inserted between the outer portion of the first annular sealing rubber sheet and the inner portion of an outer ring cylinder, and the first annular sealing rubber sheet wound and wrapped on the outer wall of the middle ring cylinder can make contact with the inner wall of the outer ring cylinder, so that the abrasion resistance is improved during vibration; the inner wall of the middle ring cylinder can make contact with the outer wall of the first annular sealing rubber piece, the sealing performance during vibration is improved, compared with a traditional line type sealing rubber ring, the first annular sealing rubber piece is large in contact face and high in stability after contact, and even if slight vibration is conducted for a long time, the problems of degumming, damage and breakage cannot be caused easily.

Description

Technical Field

[0001] The utility model relates to the technical field of flanges, in particular to a sealing structure of an aluminum alloy flange. Background Art

[0002] Aluminum alloy flange is a flange widely used in electric power, petrochemical, metallurgy, shipbuilding, light industry and other industries. It is made of aluminum alloy material and has many significant characteristics.

[0003] First of all, aluminum alloy flanges have good corrosion resistance. Since aluminum alloy has excellent chemical stability, aluminum alloy flanges perform well in acid and alkali environments.

[0004] Secondly, the aluminum alloy flange is relatively light in weight but very strong, which makes it show excellent resistance when subjected to external forces. At the same time, the aluminum alloy flange also has the characteristics of good thermal conductivity.

[0005] In the process of implementing the solution, the inventors found that the following problems in the prior art have not been well solved: a groove is reserved between traditional flanges, and a sealing ring is placed in the groove. After the flanges are fitted and assembled with bolts, the flanges will squeeze the sealing ring to form a seal. However, when the flow rate of the medium flowing in the pipe connected by the flange is too fast, it will cause a slight shaking of the flange connection, and then cause the flange to rub against the sealing ring. Over time, the sealing ring will be displaced, damaged, or broken. Even if the sealing ring is glued to the groove with glue, the friction between the flanges will cause it to debond, and then it will still be displaced, damaged, and broken, and the sealing performance will become worse and worse. Utility Model Content

[0006] The main purpose of the utility model is to provide a sealing structure of an aluminum alloy flange, which can effectively solve the problems in the background technology.

[0007] In order to achieve the above purpose, the technical solution adopted by the utility model is:

[0008] A sealing structure of an aluminum alloy flange comprises flange 1, wherein flange 1 is provided with flange 2 on one side, an inner ring cylinder is fixed to the side of flange 1 close to flange 2, an outer ring cylinder is fixed to the flange 1 on the outer side of the inner ring cylinder, an annular sealing rubber sheet 1 is bonded to the outer wall of the inner ring cylinder, a support plate is provided between the inner wall of the outer ring cylinder and the outer wall of the annular sealing rubber sheet 1, an annular sealing rubber sheet 2 is bonded to the side of the support plate close to flange 2, a plurality of springs are fixed to the end of the support plate away from the annular sealing rubber sheet 2, an intermediate ring cylinder is fixed to the side of flange 2 close to flange 1, a raw tape is wrapped around the outer wall of the intermediate ring cylinder, pipes are fixed to the ends of flange 1 and flange 2 away from each other, a plurality of through holes are drilled on the sides of flange 1 and flange 2 close to each other, bolt assemblies are installed in the through holes of flange 1 and flange 2 respectively located at matching positions, and flange 1 and flange 2 are detachably connected by the bolt assemblies.

[0009] Preferably, the middle ring tube is inserted between the inside of the outer ring tube and the outside of the first annular sealing rubber sheet, and the end of the middle ring tube is in contact with the second annular sealing rubber sheet.

[0010] Preferably, the wall thickness of the middle ring tube is smaller than the dimension between the inner wall and the outer wall of the annular sealing rubber piece.

[0011] Preferably, the inner wall of the middle ring cylinder contacts the outer wall of the annular sealing rubber sheet 1, and the outer wall of the raw tape contacts the inner wall of the outer ring cylinder.

[0012] Preferably, one end of the spring away from the backing plate is fixedly connected to one side of the flange close to the backing plate.

[0013] Preferably, a plug rod is fixed on the side wall of the support plate located between two adjacent springs, and a plug tube is fixed on the side wall of the flange located at the plug rod position, and the plug rod is respectively inserted into the inside of the plug tube and slidably connected thereto.

[0014] Compared with the prior art, the utility model has the following beneficial effects:

[0015] The middle ring tube on the flange 2 will be inserted between the outside of the annular sealing rubber sheet 1 and the inside of the outer ring tube. The annular sealing rubber sheet 1 wrapped around its outer wall can contact the inner wall of the outer ring tube, so that it can improve its wear resistance during vibration, and the inner wall of the middle ring tube will contact the outer wall of the annular sealing rubber sheet 1 to improve the sealing performance during vibration. Compared with the traditional linear sealing rubber ring, the annular sealing rubber sheet 1 has a large contact surface and high stability after contact. Even if there is a long-term slight vibration, it will not easily cause debonding, damage, or breakage.

[0016] The impact of the medium flow rate will cause flange 1 and flange 2 to move slightly closer to or away from each other, and after the middle ring tube is inserted into the annular sealing rubber sheet 1, it will fit with the annular sealing rubber sheet 2 on the side of the plate, and the spring on the other side of the plate can provide thrust to it, so that when flange 1 and flange 2 move slightly, the annular sealing rubber sheet 2 can always maintain a fit with the end of the middle ring tube, ensuring the sealing stability after the flange 1 and flange 2 are connected. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a structural schematic diagram of a sealing structure of an aluminum alloy flange of the utility model;

[0018] Figure 2 This is a schematic diagram of the flange structure of one side of a sealing structure of an aluminum alloy flange of the utility model;

[0019] Figure 3 This is a schematic diagram of the structure of one side of the flange of a sealing structure of an aluminum alloy flange of the utility model;

[0020] Figure 4 It is a schematic structural diagram of a cross-section of an outer ring cylinder of a sealing structure of an aluminum alloy flange of the utility model;

[0021] Figure 5 It is a schematic diagram of the enlarged structure of point A of the sealing structure of an aluminum alloy flange of the utility model.

[0022] In the figure: 1. Flange 1; 11. Inner ring cylinder; 12. Outer ring cylinder; 13. Annular sealing rubber sheet 1; 14. Spring; 15. Back plate; 16. Annular sealing rubber sheet 2; 17. Insert pipe; 18. Insert rod; 2. Flange 2; 21. Middle ring cylinder; 22. Raw tape; 3. Pipe; 4. Through hole; 5. Bolt assembly. DETAILED DESCRIPTION

[0023] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the present invention is further described below in conjunction with specific implementation methods.

[0024] like Figure 1-5As shown, a sealing structure of an aluminum alloy flange comprises a flange 1, a flange 2 is arranged on one side of the flange 1, an inner ring tube 11 is fixed on the side of the flange 11 close to the flange 2, an outer ring tube 12 is fixed on the outer side of the flange 11, an annular sealing rubber sheet 13 is bonded to the outer wall of the inner ring tube 11, a support plate 15 is arranged between the inner wall of the outer ring tube 12 and the outer wall of the annular sealing rubber sheet 13, an annular sealing rubber sheet 16 is bonded to the side of the support plate 15 close to the flange 2, and the support plate 15 is away from the annular sealing rubber sheet 13. A plurality of springs 14 are fixed to one end of the sealing film 2 16, an intermediate cylinder 21 is fixed to the side of the flange 2 2 close to the flange 1 1, and a raw tape 22 is wrapped around the outer wall of the intermediate cylinder 21. Pipes 3 are fixed to the ends of the flange 1 1 and the flange 2 2 that are away from each other, and a plurality of through holes 4 are drilled on the sides of the flange 1 1 and the flange 2 2 that are close to each other. Bolt assemblies 5 are installed in the through holes 4 at matching positions of the flange 1 and the flange 2, and the flange 1 and the flange 2 are detachably connected by the bolt assemblies 5.

[0025] Specifically, the middle ring tube 21 is inserted between the inside of the outer ring tube 12 and the outside of the annular sealing rubber sheet 13, and the end of the middle ring tube 21 is in contact with the annular sealing rubber sheet 16. The wall thickness of the middle ring tube 21 is smaller than the dimension between the inner and outer walls of the annular sealing rubber sheet 16. The inner wall of the middle ring tube 21 is in contact with the outer wall of the annular sealing rubber sheet 13, and the outer wall of the raw tape 22 is in contact with the inner wall of the outer ring tube 12, so as to ensure the sealing after bonding.

[0026] Specifically, one end of the spring 14 away from the support plate 15 is fixedly connected to the side close to the flange 1, and an insertion rod 18 is fixed on the side wall of the support plate 15 located between two adjacent springs 14, and an insertion tube 17 is fixed on the side wall of the flange 1 at the position of the insertion rod 18. The insertion rod 18 is respectively inserted into the inside of the insertion tube 17 and slidably connected thereto, so that the telescopic movement of the support plate 15 is more horizontal.

[0027] Working principle:

[0028] The middle ring tube 21 on the flange 2 will be inserted between the outside of the annular sealing rubber sheet 13 and the inside of the outer ring tube 12. The annular sealing rubber sheet 13 wrapped around its outer wall can contact the inner wall of the outer ring tube 12, so that it can improve its wear resistance during vibration, and the inner wall of the middle ring tube 21 will contact the outer wall of the annular sealing rubber sheet 13 to improve the sealing performance during vibration. Compared with the traditional linear sealing rubber ring, the annular sealing rubber sheet 13 has a large contact surface and high stability after contact. Even if it is slightly vibrated for a long time, it will not easily debond, break or break.

[0029] The impact of the medium flow rate will cause flange 1 and flange 2 to move slightly closer to or away from each other, and after the middle ring tube 21 is inserted into the annular sealing rubber sheet 13, it will fit with the annular sealing rubber sheet 2 16 on one side of the support plate 15, and the spring 14 on the other side of the support plate 15 can provide thrust thereto, so that when flange 1 and flange 2 move slightly, the annular sealing rubber sheet 2 16 can always maintain a fit with the end of the middle ring tube 21, ensuring the sealing stability after the flange 1 and flange 2 are connected.

[0030] The circuits, electronic components and control modules involved are all prior art and can be fully implemented by those skilled in the art. Needless to say, the content protected by the utility model does not involve improvements to software and methods.

[0031] The above shows and describes the basic principle and main features of the utility model and the advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments. The above embodiments and descriptions are only for explaining the principle of the utility model. Without departing from the spirit and scope of the utility model, the utility model may have various changes and improvements, which fall within the scope of the utility model to be protected. The scope of protection claimed by the utility model is defined by the attached claims and their equivalents.

Claims

1. A sealing structure for an aluminum alloy flange, comprising a flange 1 (1), characterized in that: A flange 2 (2) is provided on one side of the flange 1 (1), an inner ring tube (11) is fixed on the side of the flange 1 (1) close to the flange 2 (2), an outer ring tube (12) is fixed on the outer side of the flange 1 (1) located on the inner ring tube (11), an annular sealing film 1 (13) is bonded to the outer wall of the inner ring tube (11), a support plate (15) is provided between the inner wall of the outer ring tube (12) and the outer wall of the annular sealing film 1 (13), an annular sealing film 2 (16) is bonded to the side of the support plate (15) close to the flange 2 (2), and an end of the support plate (15) away from the annular sealing film 2 (16) is fixed A plurality of springs (14); a middle cylinder (21) is fixed on the side of the flange 2 (2) close to the flange 1 (1); a raw tape (22) is wound around the outer wall of the middle cylinder (21); pipes (3) are fixed on the ends of the flange 1 (1) and the flange 2 (2) away from each other; a plurality of through holes (4) are drilled on the sides of the flange 1 (1) and the flange 2 (2) close to each other; bolt assemblies (5) are installed in the through holes (4) at matching positions of the flange 1 (1) and the flange 2 (2); and the flange 1 (1) and the flange 2 (2) are detachably connected via the bolt assemblies (5).

2. The sealing structure of an aluminum alloy flange according to claim 1, characterized in that: The middle ring tube (21) is inserted between the inside of the outer ring tube (12) and the outside of the first annular sealing rubber sheet (13), and the end of the middle ring tube (21) is in contact with the second annular sealing rubber sheet (16).

3. The sealing structure of an aluminum alloy flange according to claim 1, characterized in that: The wall thickness of the middle ring tube (21) is smaller than the dimension between the inner and outer walls of the second annular sealing rubber sheet (16).

4. The sealing structure of an aluminum alloy flange according to claim 1, characterized in that: The inner wall of the middle ring tube (21) contacts the outer wall of the annular sealing rubber sheet (13), and the outer wall of the raw rubber tape (22) contacts the inner wall of the outer ring tube (12).

5. The sealing structure of an aluminum alloy flange according to claim 1, characterized in that: One end of the spring (14) away from the supporting plate (15) is fixedly connected to one side of the flange (1) that is close to the flange.

6. The sealing structure of an aluminum alloy flange according to claim 1, characterized in that: The side walls of the support plate (15) located between two adjacent springs (14) are fixed with insertion rods (18), and the side walls of the flange (1) located at the positions of the insertion rods (18) are fixed with insertion tubes (17), and the insertion rods (18) are respectively inserted into the inside of the insertion tubes (17) and slidably connected thereto.

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