Combined rupture disk

Abstract

The utility model relates to the technical field of rupture disks, and provides a combined rupture disk which comprises a first flange, a rupture disk body and a puncturing piece, the puncturing piece is located at one end of the first flange and fixedly connected with the first flange, a first through hole is formed in the middle of the first flange, a fixing ring groove is formed in the middle of the first flange, and the fixing ring groove faces the side, away from the puncturing piece, of the first flange. The fixing ring groove is located in the edge of the through hole and extends towards the outer wall of the first flange, the outer diameter of the fixing ring groove is the same as that of the rupture disk, the rupture disk is embedded into the fixing ring groove, the side, away from the first flange, of the rupture disk abuts against a sealing ring, and the sealing ring abuts against the outer side wall of the fixing ring groove. The thickness of the sealing ring is larger than the height of the fixing ring groove. By means of the technical scheme, the problems that in the prior art, due to the fact that the flange and the fixing ring are welded and fixed in the installation process, the overall structure needs to be replaced when the rupture disk is replaced subsequently, and the use cost is remarkably increased are solved.

Description

Technical Field

[0001] The utility model relates to the technical field of bursting discs, and in particular to a combined bursting disc. Background Art

[0002] Bursting discs are safety devices used to prevent equipment and piping systems from exploding or being damaged due to excessive pressure. Bursting discs automatically rupture when the pressure exceeds the set value through a predetermined bursting pressure, thereby releasing pressure and protecting the safety of the system. There are various types of bursting discs, including forward bursting discs, reverse bursting discs, flat bursting discs, etc. The material selection also covers a variety of types such as metals and non-metals to adapt to different working conditions and media requirements.

[0003] In an existing bursting disc design, the bursting disc is clamped by a flange and a fixing ring, and then the flange and the fixing ring are welded and fixed. Since the flange and the fixing ring are welded and fixed during the installation process, if a bursting disc with a different pressure resistance needs to be replaced later, or a new bursting disc needs to be replaced after the bursting disc ruptures, the flange, fixing ring and bursting disc need to be replaced at the same time, which significantly increases the cost of use. Utility Model Content

[0004] The utility model provides a combined bursting disc, which solves the problem in the related art that the flange and the fixing ring are fixed by welding during the installation process, resulting in the need to replace the entire structure when replacing the bursting disc later, which significantly increases the cost of use.

[0005] The technical solution of the utility model is as follows:

[0006] A combined bursting disc comprises a first flange, a bursting disc and a puncturing disc, wherein the puncturing disc is located at one end of the first flange and is fixedly connected to the first flange, the first flange is provided with a plurality of first screw holes, the puncturing disc is provided with a plurality of second screw holes, the first screw holes and the second screw holes are coaxially connected one by one, a first through hole is provided in the middle of the first flange, a fixing ring groove is provided in the middle of the first flange, the fixing ring groove faces the side of the first flange away from the puncturing disc, the fixing ring groove is located at the edge of the through hole, the fixing ring groove extends toward the outer wall of the first flange, the outer diameter of the fixing ring groove is the same as the outer diameter of the bursting disc, the bursting disc is embedded in the fixing ring groove, a sealing ring is abutted on the side of the bursting disc away from the first flange, the sealing ring abuts on the outer side wall of the fixing ring groove, and the thickness of the sealing ring is greater than the height of the fixing ring groove.

[0007] Furthermore, a sealing gasket is abutted on the side of the bursting disc facing away from the first flange. The sealing gasket is an annular structure, and the cross-section of the sealing gasket is a rectangular structure. The sealing gasket is located on the inner side of the sealing ring, and the sealing gasket abuts against the sealing ring. The height of the sealing gasket is greater than or equal to the height of the fixed ring groove.

[0008] Furthermore, the first flange is abutted against a second flange on a side facing away from the puncture piece, the second flange is provided with a plurality of third screw holes, each of the third screw holes is coaxially connected with the first screw hole in a one-to-one correspondence, a second through hole is provided in the middle of the first flange, a plurality of L-shaped fixing blocks are fixedly connected to a side of the first flange facing the second flange, the plurality of L-shaped fixing blocks are circumferentially arranged around the first flange, a plurality of L-shaped fixing grooves are provided on a side of the second flange facing the first flange, the plurality of L-shaped fixing grooves are circumferentially arranged around the second flange, each L-shaped fixing block corresponds to the position of the L-shaped fixing groove in a one-to-one correspondence, and the L-shaped fixing block is embedded in the corresponding L-shaped fixing groove.

[0009] Furthermore, a first fixing rod extends outward from the outer side of the first flange, a second fixing rod extends outward from the outer side of the second flange, the second fixing rod is rotatably connected to a buckle, an end of the buckle away from the second fixing rod is provided with a C-shaped opening, the first fixing rod is located in the C-shaped opening, the C-shaped opening is provided with a limiting protrusion for fixing the first fixing rod to be connected to the C-shaped opening, and the limiting protrusion abuts against the first fixing rod.

[0010] The working principle and beneficial effects of the utility model are:

[0011] The utility model sets a fixed ring groove in the first flange, so that the bursting disc is embedded in the fixed ring groove and abuts against the first flange, and at the same time, a sealing ring is set on the bursting disc, so that the sealing ring abuts against the outer wall of the bursting disc and the fixed ring groove at the same time (that is, abuts against the first flange), and then the bursting disc is fixed in the first flange by the friction force generated by the abutment between the sealing ring and the outer wall of the fixed ring groove. During installation, the side of the sealing ring away from the first flange abuts against the installation equipment. Because the thickness of the sealing ring is greater than the height of the fixed ring groove, the sealing ring will deform, and then fill the small gap between the first flange and the installation equipment, thereby improving the sealing performance. At the same time, the deformed sealing ring will further press the bursting disc and the first flange, so that the connection between the bursting disc and the first flange is more stable. The utility model fixes the bursting disc and the first flange through the sealing ring. When the bursting disc needs to be replaced, the bursting disc can be separated from the first flange by disassembling the sealing ring. This method is convenient and fast, and will not cause damage to the first flange, thereby extending the service life of the first flange and reducing the cost of use. The invention solves the problem in the related art that the flange and the fixing ring are fixed by welding during the installation process, resulting in the need to replace the entire structure when replacing the bursting disc later, which significantly increases the cost of use. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] The utility model is further described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0013] Figure 1 This is a structural schematic diagram of Example 1;

[0014] Figure 2 It is an exploded view of Example 1;

[0015] Figure 3 This is a schematic diagram of the structure of Example 2;

[0016] Figure 4 It is an exploded view of Example 2;

[0017] Figure 5 This is a schematic diagram of the structure of the second flange in Example 2.

[0018] In the figure: 1. first flange; 2. bursting disc; 3. puncture disc; 4. sealing ring; 5. sealing gasket; 6. second flange; 7. buckle; 11. fixing ring groove; 12. first screw hole; 13. first fixing rod; 14. L-shaped fixing block; 15. first through hole; 31. second screw hole; 61. third screw hole; 62. second fixing rod; 63. L-shaped fixing groove; 64. second through hole; 71. C-shaped opening; 72. limiting protrusion. DETAILED DESCRIPTION

[0019] The following will be combined with 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.

[0020] Example 1

[0021] like Figure 1-2As shown, embodiment 1 proposes a combined bursting disc 2, comprising a first flange 1, a bursting disc 2, and a puncture disc 3. The puncture disc 3 is located at one end of the first flange 1 and is fixedly connected to the first flange 1. The first flange 1 is provided with a plurality of first screw holes 12, and the puncture disc 3 is provided with a plurality of second screw holes 31. The first screw holes 12 and the second screw holes 31 are coaxially connected one by one. A first through hole 15 is provided in the middle of the first flange 1, and a fixed annular groove 11 is provided in the middle of the first flange 1. The fixed annular groove 11 faces the side of the first flange 1 away from the puncture disc 3. The fixed annular groove 11 is located at the edge of the through hole. The fixed annular groove 11 extends toward the outer wall of the first flange 1. The outer diameter of the fixed annular groove 11 is the same as the outer diameter of the bursting disc 2. The bursting disc 2 is embedded in the fixed annular groove 11. A sealing ring 4 is abutted on the side of the bursting disc 2 away from the first flange 1. The sealing ring 4 abuts against the outer side wall of the fixed annular groove 11, and the thickness of the sealing ring 4 is greater than the height of the fixed annular groove 11. The puncture piece 3 is used to assist the bursting piece 2 when the bursting piece 2 reaches the preset pressure, puncture the bursting piece 2, and then release the pressure; when the pressure in the equipment continues to rise, the bursting piece 2 will deform in the direction of the puncture piece 3, and when the bursting piece 2 contacts the puncture piece 3, the puncture piece 3 will penetrate into the bursting piece 2, so that the bursting piece 2 can be completely ruptured, avoiding the complete hidden danger caused by incomplete rupture. The first screw hole 12 and the second screw hole 31 are used to fix the bolts, so that the bolts connect and fix the puncture piece 3 and the first flange 1. The first through hole 15 is the pressure release channel of the bursting piece 2. The fixed ring groove 11 is used to accommodate and fix the bursting piece 2, ensure the stability and sealing of the bursting piece 2, and prevent gas leakage. The sealing ring 4 is used to fix the bursting disc 2 in the fixed annular groove 11. The bursting disc 2 is fixed by the friction force generated by the abutment between the sealing ring 4 and the fixed annular groove 11. At the same time, when the first flange 1 is connected to the installation equipment, the sealing ring 4 should abut against the installation equipment. At the same time, because the thickness of the sealing ring 4 is greater than the height of the fixed annular groove 11, the sealing ring 4 will be deformed after abutting against the installation equipment. The deformed sealing ring 4 will fill the small gap between the first flange 1 and the installation equipment for further sealing. At the same time, the deformed sealing ring 4 will make the connection between the bursting disc 2 and the first flange 1 more stable. The sealing ring 4 is an O-type sealing ring. The thickness of the sealing ring 4 refers to the shortest distance between the inner diameter and the outer diameter of the sealing ring. The height of the fixed annular groove 11 refers to the maximum distance between the upper and lower end faces of the fixed buffer 11. The sealing ring 4 can simultaneously realize the fixation of the bursting disc 2 and the first flange 1 and enhance the sealing performance of the first flange 1 and the installation equipment. The setting of the sealing ring 4 facilitates the replacement of the bursting disc 2, reduces the replacement and maintenance costs, and improves the maintenance efficiency.

[0022] In Example 1, a sealing gasket 5 is also abutted on the side of the bursting disc 2 away from the first flange 1. The sealing gasket 5 is an annular structure, and the cross section of the sealing gasket 5 is a rectangular structure. The sealing gasket 5 is located on the inner side of the sealing ring 4, and the sealing gasket 5 abuts against the sealing ring 4. The height of the sealing gasket 5 is greater than or equal to the height of the fixed ring groove 11. The sealing gasket 5 is used to provide additional sealing and enhance the abutment strength between the sealing ring 4 and the first flange 1, thereby enhancing the friction between the sealing ring 4 and the first flange 1, so that the sealing ring 4 can better fix the bursting disc 2. The sealing gasket 5 with an annular structure can ensure that the sealing gasket 5 can effectively cover the fixed ring groove 11, provide a consistent and uniform sealing effect, and improve the overall sealing performance. The sealing gasket 5 with a rectangular cross section can be better compressed and sealed under pressure, improve the reliability of the seal, and is particularly suitable for application scenarios requiring high sealing performance. The sealing gasket 5 with a height greater than or equal to the fixed ring groove 11 can be compressed during the installation process, ensuring that there is no gap in the fixed ring groove 11, and providing the best sealing performance. The height of the sealing gasket 5 refers to the minimum distance between the two end faces of the sealing gasket 5.

[0023] Example 2

[0024] like Figure 3 to Figure 5 As shown, the difference between Example 2 and Example 1 is that the side of the first flange 1 facing away from the puncture disc 3 is abutted against the second flange 6, the second flange 6 is provided with a plurality of third screw holes 61, each of which is coaxially connected to the first screw hole 12 in a one-to-one correspondence, a second through hole 64 is provided in the middle of the first flange 1, a plurality of L-shaped fixing blocks 14 are fixedly connected to the side of the first flange 1 facing the second flange 6, the plurality of L-shaped fixing blocks 14 are arranged circumferentially around the first flange 1, a plurality of L-shaped fixing grooves 63 are provided on the side of the second flange 6 facing the first flange 1, the plurality of L-shaped fixing grooves 63 are arranged circumferentially around the second flange 6, each L-shaped fixing block 14 corresponds to the position of the L-shaped fixing groove 63 in a one-to-one correspondence, and the L-shaped fixing block 14 is embedded in the corresponding L-shaped fixing groove 63. The second flange 6 is used to further fix the sealing ring 4 and the bursting disc 2 when the bursting disc 2 is fixed to the installation equipment that cannot be adapted to the first through hole 15, and then fix it to the first flange 1. The third screw hole 61 is used to fix the second flange 6 to the first flange 1 by bolt connection. The L-shaped fixing block 14 and the L-shaped fixing groove 63 are used to provide additional mechanical locking and support to enhance the strength of the flange connection. During connection, the L-shaped fixing block 14 is embedded in the L-shaped fixing groove 63, and the second flange 6 is rotated around its center line so that the L-shaped fixing block 14 rotates into the L-shaped fixing groove 63, thereby fixing the second flange 6 to the first flange 1. The mechanical locking of the L-shaped fixing block 14 and the L-shaped fixing groove 63 prevents relative movement between the flanges, thereby improving the vibration and impact resistance of the connection.

[0025] Further, a first fixing rod 13 is extended outwardly from the outer side of the first flange 1, and a second fixing rod 62 is extended outwardly from the outer side of the second flange 6. The second fixing rod 62 is rotatably connected with a buckle 7. A C-shaped opening 71 is provided at one end of the buckle 7 away from the second fixing rod 62. The first fixing rod 13 is located in the C-shaped opening 71. The C-shaped opening 71 is provided with a limiting protrusion 72 for fixing the connection between the first fixing rod 13 and the C-shaped opening 71. The limiting protrusion 72 abuts against the first fixing rod 13. The first fixing rod 13 and the second fixing rod 62 are used to provide a fixing point, so that the buckle 7 can further increase the connection strength of the first flange 1 and the second flange 6 by connecting with the first fixing rod 13 and the second fixing rod 62. The buckle 7 is rotatably connected with the second fixing rod 62 so that it can be fixed with the second flange 6, which facilitates the connection between the buckle 7 and the first fixing rod 13, that is, the C-shaped opening 71 of the buckle 7 is connected with the first fixing rod 13 by rotation. The C-shaped opening 71 is used to connect the buckle 7 with the first fixing rod 13. The limiting protrusion 72 is used to prevent the buckle 7 from being disconnected from the first fixing rod 13 after the first fixing rod 13 is inserted into the C-shaped opening 71. The limiting protrusion 72 should be arranged on the side of the C-shaped opening 71 away from the second fixing rod 62. The buckle 7 should be made of a material with high strength and elasticity, such as copper alloy, spring steel and the like.

[0026] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A combined bursting disc (2), comprising a first flange (1), a bursting disc (2), and a puncturing disc (3), wherein the puncturing disc (3) is located at one end of the first flange (1) and is fixedly connected to the first flange (1), the first flange (1) is provided with a plurality of first screw holes (12), the puncturing disc (3) is provided with a plurality of second screw holes (31), each of the first screw holes (12) and the second screw holes (31) are coaxially connected in a one-to-one correspondence, and a first through hole (15) is provided in the middle of the first flange (1), characterized in that: A fixing ring groove (11) is provided in the middle of the first flange (1), the fixing ring groove (11) faces the side of the first flange (1) away from the puncture disc (3), the fixing ring groove (11) is located at the edge of the through hole, the fixing ring groove (11) extends toward the outer wall of the first flange (1), the outer diameter of the fixing ring groove (11) is the same as the outer diameter of the bursting disc (2), the bursting disc (2) is embedded in the fixing ring groove (11), the side of the bursting disc (2) away from the first flange (1) is abutted with a sealing ring (4), the sealing ring (4) is abutted against the outer side wall of the fixing ring groove (11), and the thickness of the sealing ring (4) is greater than the height of the fixing ring groove (11).

2. The combined bursting disc (2) according to claim 1, characterized in that: A sealing gasket (5) is also abutted against the side of the bursting disc (2) facing away from the first flange (1); the sealing gasket (5) is an annular structure; the cross section of the sealing gasket (5) is a rectangular structure; the sealing gasket (5) is located on the inner side of the sealing ring (4); the sealing gasket (5) abuts against the sealing ring (4); and the height of the sealing gasket (5) is greater than or equal to the height of the fixed ring groove (11).

3. The combined bursting disc (2) according to claim 1, characterized in that: The first flange (1) is abutted against a second flange (6) on a side facing away from the puncture sheet (3); the second flange (6) is provided with a plurality of third screw holes (61); each of the third screw holes (61) is coaxially connected to the first screw hole (12) in a one-to-one correspondence; a second through hole (64) is provided in the middle of the first flange (1); a plurality of L-shaped fixing blocks (14) are fixedly connected to a side of the first flange (1) facing the second flange (6); the plurality of L-shaped fixing blocks (14) are circumferentially arranged around the first flange (1); a plurality of L-shaped fixing grooves (63) are provided on a side of the second flange (6) facing the first flange (1); the plurality of L-shaped fixing grooves (63) are circumferentially arranged around the second flange (6); each of the L-shaped fixing blocks (14) corresponds to the position of the L-shaped fixing groove (63) in a one-to-one correspondence; and the L-shaped fixing block (14) is embedded in the corresponding L-shaped fixing groove (63).

4. The combined bursting disc (2) according to claim 3, characterized in that: A first fixing rod (13) extends outwardly from the outer side of the first flange (1), a second fixing rod (62) extends outwardly from the outer side of the second flange (6), the second fixing rod (62) is rotatably connected to a buckle (7), an end of the buckle (7) away from the second fixing rod (62) is provided with a C-shaped opening (71), the first fixing rod (13) is located in the C-shaped opening (71), the C-shaped opening (71) is provided with a limiting protrusion (72) for fixing the connection between the first fixing rod (13) and the C-shaped opening (71), and the limiting protrusion (72) is in contact with the first fixing rod (13).

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