A sealing aluminum alloy flange connection structure

Abstract

This utility model discloses an aluminum alloy flange connection structure with good sealing effect in the field of flange sealing technology. It includes an aluminum alloy flange one, an aluminum alloy flange two, a pipe body one, and a pipe body two. An insertion groove is formed on one side wall of the aluminum alloy flange one, and an insertion protrusion ring is provided on one side wall of the aluminum alloy flange two. A sealing ring one is provided at the insertion connection between the insertion protrusion ring and the insertion groove, and a sealing ring two is provided at the contact point between the aluminum alloy flange one and the aluminum alloy flange two. The aluminum alloy flange one and the aluminum alloy flange two are fastened together by anti-loosening fasteners. A gap protection seal is provided between the outer surfaces of the aluminum alloy flange one and the aluminum alloy flange two, and a sealing ring three is provided between the gap protection seal and both the aluminum alloy flange one and the aluminum alloy flange two. This application avoids the increase of gap at the connection due to loosening of bolts and nuts, greatly improves the sealing effect, and provides a long-lasting and durable sealing effect.

Description

Technical Field

[0001] This utility model relates to the field of flange sealing technology, specifically to an aluminum alloy flange connection structure with good sealing effect. Background Technology

[0002] Aluminum alloy flanges are commonly used components in pipe connections, primarily used to achieve detachable connections between pipes, or between pipes and equipment or valves. Aluminum alloy flanges specifically refer to flanges made primarily of aluminum alloy. This material choice makes the flanges lightweight and corrosion-resistant, making them ideal for certain specific industrial environments.

[0003] Traditional flanges typically consist of a pair of mating annular parts fastened together with bolts and nuts to form a sealed connection. However, when the bolts and nuts loosen, gaps appear at the connection. As the bolts and nuts become increasingly loose, the gaps gradually widen, eventually causing the seal to fail. Therefore, such a sealing connection is not very effective. To address this issue, this application provides an aluminum alloy flange connection structure with superior sealing performance. Utility Model Content

[0004] The purpose of this utility model is to overcome the above-mentioned problems in the prior art and provide an aluminum alloy flange connection structure with good sealing effect, which avoids the loosening of bolts and nuts and increases the gap at the connection, greatly improves the sealing effect, and the sealing effect is long-lasting and durable.

[0005] To solve the above technical problems, this utility model provides an aluminum alloy flange connection structure with good sealing effect, including an aluminum alloy flange one, an aluminum alloy flange two, a pipe body one and a pipe body two. The aluminum alloy flange one has an insertion groove on one side wall, and the aluminum alloy flange two has an insertion protrusion ring on one side wall.

[0006] A sealing ring one is provided at the insertion connection between the insertion protrusion ring and the insertion groove, and a sealing ring two is provided at the contact point between the aluminum alloy flange one and the aluminum alloy flange two.

[0007] The aluminum alloy flange one and aluminum alloy flange two are fastened together by anti-loosening fasteners;

[0008] A gap protection seal is provided between the exterior of aluminum alloy flange one and aluminum alloy flange two, and a sealing ring three is provided between the gap protection seal and aluminum alloy flange one and aluminum alloy flange two.

[0009] Preferably, the gap protection seal includes a wrapping ring, the inner sidewall of which is provided with a locking protrusion ring, and the outer walls of the aluminum alloy flange one and the aluminum alloy flange two are provided with locking ring grooves that cooperate with the locking protrusion rings, and the two sets of sealing rings three are located between the two locking ring grooves.

[0010] Based on the above technical features, the engagement protrusion ring is embedded into the engagement ring groove, which facilitates the positioning and installation of the wrapping ring on the outside of aluminum alloy flange one and aluminum alloy flange two.

[0011] Preferably, one end of the opening of the wrapping ring is connected to an upper connecting piece, and the other end of the opening of the wrapping ring is connected to a lower connecting piece. A connecting stud is uniformly fixed to the top of the lower connecting piece, and a locking nut is threaded onto the connecting stud. The locking nut is located on the top of the upper connecting piece, and slots and through holes that mate with the connecting studs are uniformly opened on the top of the upper connecting piece.

[0012] Based on the above technical features, by passing the connecting stud through the slot hole and then tightening the locking nut on the connecting stud, it is easy to cover and lock the upper and lower connecting pieces, thereby achieving limit fixation.

[0013] Preferably, the anti-loosening fastener includes a fastening bolt and a fastening nut. An anti-loosening stud is welded to the other end of the fastening bolt. The threads of the anti-loosening stud and the fastening bolt are opposite in direction. The fastening nut is threaded to the other end of the fastening bolt and is sleeved with the anti-loosening stud. An anti-loosening nut is threaded onto the anti-loosening stud and fits against the fastening nut.

[0014] Based on the above technical features, when the fastening nut loosens, its force is transmitted to the anti-loosening nut. The anti-loosening nut rotates on the anti-loosening stud in the same direction as the loosening of the fastening nut, thus actually performing a tightening action, thereby pressing the fastening nut to achieve the anti-loosening action.

[0015] Preferably, the inner circumferential wall of the insertion protrusion ring is uniformly welded with an anti-deformation strip, and the anti-deformation strip is welded to the inner circumferential wall of the aluminum alloy flange II.

[0016] Based on the above technical features, the insertion protrusion ring on the aluminum alloy flange is supported by uniformly distributed anti-deformation strips to prevent deformation.

[0017] Preferably, the first tube body is connected to the other side of the first aluminum alloy flange, the fourth tube body is connected to the other side of the second aluminum alloy flange, the first aluminum alloy flange and the first tube body are integrally formed, and the second aluminum alloy flange, the fourth tube body and the insertion protrusion ring are integrally formed.

[0018] Based on the above technical features, the number of fixed connections is reduced, thus avoiding the possibility of breakage at the fixed connections.

[0019] Preferably, reinforcing ribs are uniformly fixedly connected to the external connection points of the aluminum alloy flange one and the pipe body one, and to the external connection points of the aluminum alloy flange two and the pipe body four.

[0020] Based on the above technical features, it is convenient to enhance the stability between aluminum alloy flange one and pipe body one, as well as the stability between aluminum alloy flange two and pipe body four.

[0021] Preferably, the aluminum alloy flange one and the aluminum alloy flange two are each uniformly provided with fastening insertion holes that cooperate with the anti-loosening fasteners.

[0022] Based on the above technical features, it is convenient to use the fastening bolts in the anti-loosening fasteners to insert into the fastening socket through holes to make a preliminary connection between aluminum alloy flange one and aluminum alloy flange two.

[0023] In summary, this utility model has at least one of the following beneficial effects:

[0024] This utility model addresses two sets of aluminum alloy flanges, flange one and flange two, by first achieving a plug-in connection through the cooperation of a plug-in protrusion ring and a plug-in groove, replacing the traditional direct bonding connection method. Then, a sealing ring one is installed at the plug-in connection to achieve a seal at the inner connection of the flange. A sealing ring two is installed at the direct bonding connection of aluminum alloy flange one and aluminum alloy flange two to achieve a seal at the outer connection of the flange. Finally, the two sets of flanges are tightened with anti-loosening fasteners to prevent the bolts and nuts from loosening and increasing the gap at the connection, thereby greatly improving the sealing effect.

[0025] This invention adds a wrapping ring to the external connection of aluminum alloy flange one and aluminum alloy flange two to cover the connection, reducing the aging effect of external environmental factors on sealing ring two at the connection, extending the service life of sealing ring two, and improving the sealing effect. Furthermore, by setting a sealing ring three on each side of the connection and placing it between the wrapping ring and the flange, the connection sealing between the wrapping ring and the flange is improved, thereby improving the overall sealing effect between aluminum alloy flange one and aluminum alloy flange two, extending the sealing time, and making the aluminum alloy flange connection structure of this application durable. Attached Figure Description

[0026] Figure 1 This is a schematic diagram illustrating the usage state of an aluminum alloy flange connection structure with good sealing effect according to this utility model. Figure 1 ;

[0027] Figure 2 This is a schematic diagram illustrating the usage state of an aluminum alloy flange connection structure with good sealing effect according to this utility model. Figure 2 ;

[0028] Figure 3 This is a schematic diagram illustrating the usage state of an aluminum alloy flange connection structure with good sealing effect according to this utility model. Figure 3 ;

[0029] Figure 4For the present utility model Figure 1 A half-section view;

[0030] Figure 5 For the present utility model Figure 4 Front view;

[0031] Figure 6 This is a schematic diagram of the connection structure between the aluminum alloy flange and the pipe body of this utility model.

[0032] Figure 7 This is a schematic diagram of the connection structure between the aluminum alloy flange 2 and the pipe body 2 of this utility model;

[0033] Figure 8 This is a schematic diagram of the gap protection seal of this utility model. Figure 1 ;

[0034] Figure 9 This is a schematic diagram of the gap protection seal of this utility model. Figure 2 ;

[0035] The attached diagram lists the components represented by each number as follows:

[0036] 1-Aluminum alloy flange one, 101-Insertion groove, 2-Aluminum alloy flange two, 201-Insertion protrusion ring, 202-Anti-deformation strip, 3-Pipe body one, 4-Pipe body two, 5-Anti-loosening fastener, 501-Fastening bolt, 502-Fastening nut, 503-Anti-loosening stud, 504-Anti-loosening nut, 6-Gap protection seal, 601-Wrapping ring, 602-Clamping protrusion ring, 603-Upper connecting piece, 604-Lower connecting piece, 605-Connecting stud, 606-Locking nut, 607-Slotted through hole, 7-Sealing ring one, 8-Sealing ring two, 9-Sealing ring three, 10-Fastening insertion through hole, 11-Clamping ring groove, 12-Reinforcing rib block. Detailed Implementation

[0037] The following is in conjunction with the appendix Figures 1-9 The present invention will be described in further detail below.

[0038] One embodiment of this utility model is provided: see attached document. Figure 1 -Appendix Figure 7A sealing-effect aluminum alloy flange connection structure includes an aluminum alloy flange 1, an aluminum alloy flange 2, a pipe body 3, and a pipe body 4. The flanges are made of aluminum alloy, which facilitates weight reduction and provides high strength and ease of use. An insertion groove 101 is provided on one side wall of the aluminum alloy flange 1, and an insertion protrusion ring 201 is provided on one side wall of the aluminum alloy flange 2. The pipe body 3 is connected to the other side of the aluminum alloy flange 1, and the pipe body 4 is connected to the other side of the aluminum alloy flange 2. The aluminum alloy flange 1 and the pipe body 3 are integrally formed, and the aluminum alloy flange 2, the pipe body 4, and the insertion protrusion ring 201 are integrally formed, reducing the number of fixed connections and avoiding the possibility of breakage at the fixed connections.

[0039] Reinforcing ribs 12 are uniformly fixedly connected at the external connection points of aluminum alloy flange 1 and pipe body 3, and at the external connection points of aluminum alloy flange 2 and pipe body 4, respectively, to enhance the stability between aluminum alloy flange 1 and pipe body 3, and to enhance the stability between aluminum alloy flange 2 and pipe body 4.

[0040] A sealing ring 7 is provided at the insertion connection between the insertion protrusion ring 201 and the insertion groove 101. Anti-deformation strips 202 are uniformly welded to the inner circumference of the insertion protrusion ring 201. The anti-deformation strips 202 are welded to the inner circumference of the aluminum alloy flange 2. The uniformly distributed anti-deformation strips 202 further support the insertion protrusion ring 201 on the aluminum alloy flange 2 to prevent its deformation, thereby further improving the sealing performance of the connection after the insertion protrusion ring 201 is inserted into the insertion groove 101.

[0041] A sealing ring 28 is provided at the contact point between aluminum alloy flange 1 and aluminum alloy flange 2;

[0042] Aluminum alloy flange 1 and aluminum alloy flange 2 are fastened together by anti-loosening fastener 5;

[0043] A gap protection seal 6 is provided between the outer surfaces of aluminum alloy flange 1 and aluminum alloy flange 2, and a sealing ring 3 9 is provided between the gap protection seal 6 and aluminum alloy flange 1 and aluminum alloy flange 2.

[0044] See appendix Figure 4 Appendix Figure 8 and attached Figure 9The gap protection seal 6 includes a wrapping ring 601. The inner wall of the wrapping ring 601 is provided with a locking protrusion ring 602. The outer walls of aluminum alloy flange 1 and aluminum alloy flange 2 are provided with locking ring grooves 11 that cooperate with the locking protrusion ring 602. Two sets of sealing rings 3 9 are located between the two locking ring grooves 11. The wrapping ring 601 and aluminum alloy flange 1 and aluminum alloy flange 2 are provided with mounting grooves 3 that cooperate with the sealing rings 3 9. The locking protrusion ring 602 is embedded into the locking ring groove 11, which facilitates the positioning and installation of the wrapping ring 601 on the outside of aluminum alloy flange 1 and aluminum alloy flange 2.

[0045] One end of the opening of the wrapping ring 601 is connected to an upper connecting piece 603, and the other end of the opening of the wrapping ring 601 is connected to a lower connecting piece 604. Connecting studs 605 are evenly fixed to the top of the lower connecting piece 604, and locking nuts 606 are threaded onto the connecting studs 605. The locking nuts 606 are located on the top of the upper connecting piece 603. The top of the upper connecting piece 603 has evenly spaced slots 607 that mate with the connecting studs 605. The wrapping ring 601 is fitted onto the outer connection point of the aluminum alloy flange 1 and the aluminum alloy flange 2, and then the connecting... The connecting stud 605 passes through the slot through hole 607, and then the locking nut 606 is screwed on the connecting stud 605 to facilitate the covering and locking between the upper connecting piece 603 and the lower connecting piece 604, thereby realizing the limiting and fixing of the wrapping ring 601. The wrapping ring 601 covers the connection between the aluminum alloy flange 1 and the aluminum alloy flange 2. Then, the locking protrusion ring 602 is embedded into the locking ring groove 11 for initial sealing. Then, two sets of sealing rings 9 are used for secondary sealing, thereby reducing the aging effect of external environmental factors on sealing ring 8.

[0046] See appendix Figure 5 The anti-loosening fastener 5 includes a fastening bolt 501 and a fastening nut 502. An anti-loosening stud 503 is welded to the other end of the fastening bolt 501. The threads of the anti-loosening stud 503 and the fastening bolt 501 are opposite in direction. The fastening nut 502 is threaded to the other end of the fastening bolt 501 and is sleeved with the anti-loosening stud 503. An anti-loosening nut 504 is threaded onto the anti-loosening stud 503. The anti-loosening nut 504 fits against the fastening nut 502. Due to the opposite thread direction of the anti-loosening stud 503 and the fastening bolt 501, when the fastening nut 502 is loose, its force is transmitted to the anti-loosening nut 504. The anti-loosening nut 504 rotates on the anti-loosening stud 503 in the same direction as the loosening of the fastening nut 502, thus actually performing a tightening action, thereby pressing the fastening nut 502 to achieve the anti-loosening action.

[0047] Aluminum alloy flange 1 and aluminum alloy flange 2 are respectively provided with fastening insertion holes 10 that cooperate with anti-loosening fasteners 5, so that the fastening bolts 501 in the anti-loosening fasteners 5 can be inserted into the fastening insertion holes 10 to perform preliminary connection and positioning between aluminum alloy flange 1 and aluminum alloy flange 2.

[0048] Working principle:

[0049] For the two sets of flanges, aluminum alloy flange 1 and aluminum alloy flange 2, the insertion ring 201 is first inserted into the insertion groove 101 to achieve the insertion connection, replacing the traditional direct bonding connection method. Then, a sealing ring 7 is installed at the insertion connection to achieve the sealing of the inner connection of the flange. A sealing ring 8 is installed at the direct bonding connection of aluminum alloy flange 1 and aluminum alloy flange 2 to achieve the sealing of the outer connection of the flange. Then, the two sets of flanges are tightened with anti-loosening fasteners 5 to prevent the bolts and nuts from loosening and increasing the gap at the connection, thus greatly improving the sealing effect.

[0050] Next, a wrapping ring 601 is fixed to the external connection of the two sets of flanges, aluminum alloy flange 1 and aluminum alloy flange 2, to cover the connection. This reduces the aging effect of external environmental factors on the sealing ring 28 at the connection, extends the service life of the sealing ring 28, and improves the sealing effect. Furthermore, by setting a sealing ring 3 9 on each side of the connection and placing it between the wrapping ring 601 and the flange, the connection sealing between the wrapping ring 601 and the flange is improved. This improves the overall sealing effect between aluminum alloy flange 1 and aluminum alloy flange 2, extends the sealing time, and makes the aluminum alloy flange connection structure of this application durable.

[0051] The above are all preferred embodiments of this utility model, and are not intended to limit the scope of protection of this utility model. Therefore, all equivalent changes made to the structure, shape and principle of this utility model should be covered within the scope of protection of this utility model.

Claims

1. A sealing aluminum alloy flange connection structure, comprising an aluminum alloy flange one (1), an aluminum alloy flange two (2), a pipe body one (3), and a pipe body two (4), characterized in that: The aluminum alloy flange one (1) has a plug groove (101) on one side wall, and the aluminum alloy flange two (2) has a plug protrusion ring (201) on one side wall. A sealing ring 1 (7) is provided at the insertion connection between the insertion protrusion ring (201) and the insertion groove (101), and a sealing ring 2 (8) is provided at the contact point between the aluminum alloy flange 1 (1) and the aluminum alloy flange 2 (2). The aluminum alloy flange one (1) and aluminum alloy flange two (2) are fastened together by anti-loosening fasteners (5); A gap protection seal (6) is provided between the exterior of the aluminum alloy flange one (1) and the aluminum alloy flange two (2), and a sealing ring three (9) is provided between the gap protection seal (6) and the aluminum alloy flange one (1) and the aluminum alloy flange two (2).

2. The aluminum alloy flange connection structure with good sealing effect according to claim 1, characterized in that: The gap protection seal (6) includes a wrapping ring (601), and the inner side wall of the wrapping ring (601) is provided with a locking protrusion ring (602). The outer walls of the aluminum alloy flange one (1) and the aluminum alloy flange two (2) are provided with locking ring grooves (11) that cooperate with the locking protrusion ring (602). The two sets of sealing rings three (9) are located between the two locking ring grooves (11).

3. The aluminum alloy flange connection structure with good sealing effect according to claim 2, characterized in that: The opening of the wrapping ring (601) is connected to an upper connecting piece (603) at one end, and to a lower connecting piece (604) at the other end. A connecting stud (605) is uniformly fixed to the top of the lower connecting piece (604). A locking nut (606) is threaded onto the connecting stud (605). The locking nut (606) is located on the top of the upper connecting piece (603). The top of the upper connecting piece (603) is uniformly provided with slotted through holes (607) that mate with the connecting stud (605).

4. The aluminum alloy flange connection structure with good sealing effect according to claim 1, characterized in that: The anti-loosening fastener (5) includes a fastening bolt (501) and a fastening nut (502). An anti-loosening stud (503) is welded to the other end of the fastening bolt (501). The threads of the anti-loosening stud (503) and the fastening bolt (501) are opposite. The fastening nut (502) is threaded to the other end of the fastening bolt (501), and the fastening nut (502) is sleeved with the anti-loosening stud (503). An anti-loosening nut (504) is threaded onto the anti-loosening stud (503), and the anti-loosening nut (504) is in contact with the fastening nut (502).

5. The aluminum alloy flange connection structure with good sealing effect according to claim 1, characterized in that: The inner circumferential wall of the insertion protrusion ring (201) is uniformly welded with anti-deformation strips (202), and the anti-deformation strips (202) are welded to the inner circumferential wall of the aluminum alloy flange (2).

6. The aluminum alloy flange connection structure with good sealing effect according to claim 1, characterized in that: The first tube (3) is connected to the other side of the first aluminum alloy flange (1), and the second tube (4) is connected to the other side of the second aluminum alloy flange (2). The first aluminum alloy flange (1) and the first tube (3) are integrally formed structures, and the second aluminum alloy flange (2), the second tube (4) and the plug-in protrusion ring (201) are integrally formed structures.

7. The aluminum alloy flange connection structure with good sealing effect according to claim 6, characterized in that: Reinforcing ribs (12) are uniformly fixedly connected at the external connection between the aluminum alloy flange one (1) and the pipe body one (3) and at the external connection between the aluminum alloy flange two (2) and the pipe body two (4).

8. The aluminum alloy flange connection structure with good sealing effect according to claim 1, characterized in that: The aluminum alloy flange one (1) and aluminum alloy flange two (2) are respectively provided with fastening insertion holes (10) that cooperate with the anti-loosening fasteners (5).

Images