Radial seam structure bracket assembly for resisting back pressure of forward arch slotting type rupture disk

Abstract

The utility model discloses an anti-backpressure radial seam structure bracket assembly for a positive arch slotted rupture disk, which relates to the technical field of rupture disks, and comprises a positive arch slotted rupture disk, an upper lining film, a sealing film, a lower lining film and a novel backpressure-resistant bracket which are sequentially arranged from top to bottom and matched in shape, according to the radial seam structure bracket assembly for resisting back pressure of the forward-arch slotted rupture disk, the bracket supporting plate is arranged below the bracket radial seam in a spot welding mode, and when the bracket assembly is combined with the large-diameter forward-arch slotted rupture disk for use, the bracket can be prevented from integrally flying out along the circular seam to generate fragments; according to the utility model, the expandability is strong, and simple adjustment is carried out according to the bursting pressure, the back pressure and occasions with strict requirements on no fragments, so that the device can be used in different working conditions.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of bursting disc, specifically to a radial slit structure bracket assembly for anti-back pressure of positive arch slit type bursting disc. BACKGROUND

[0002] In the industrial field, especially in high-risk industries such as chemical industry, petrochemical industry and metallurgy, safety relief device is the key component to ensure the safety of equipment and personnel. Among them, the bursting disc assembly as an important safety relief device, its role is to release pressure rapidly when the pressure reaches the predetermined limit, to prevent the equipment from exploding or damaging due to high pressure.

[0003] The traditional large-diameter positive arch slit type bursting disc assembly is widely used in low-pressure working conditions due to its simple structure and low cost. This kind of bursting disc is usually made of metal, with one or more slits, when the pressure reaches the set pressure of the bursting disc, the slit will open, thus realizing pressure release. However, this design also has some limitations: metal fragment problem: during the bursting process, due to the fracture of metal, metal fragments may be generated, which may cause secondary damage to the equipment or the surrounding environment; structural limitation: the simple structure type limits its applicability in various working conditions, especially in situations that need to withstand vacuum or back pressure; single function: traditional bursting disc assembly usually only has single bursting function, which cannot meet the demand of modern industry for multifunctionality of equipment.

[0004] In the prior art, there is also a ring slit opening type bracket used as the bracket of the large-diameter positive arch slit type bursting disc, but this bracket structure type is relatively simple and cannot meet the demand of various working conditions. UTILITY MODEL CONTENTS

[0005] The utility model aims to provide a radial slit structure bracket assembly for anti-back pressure of positive arch slit type bursting disc, to solve the problem of the existing large-diameter positive arch slit type bursting disc in the above background technology, which is not easy to crack, has weak expansibility and narrow application range when it needs to resist back pressure.

[0006] To achieve the above object, the utility model provides the following technical scheme: a kind of radial slit structure bracket assembly for positive arch slit type rupture disk resistance to back pressure, including being sequentially arranged from top to bottom and shape fitting positive arch slit type rupture disk, upper lining film, sealing film, lower lining film and novel back pressure resistant bracket;The positive arch slit type rupture disk includes annular rupture disk clamping ring and is fixed with the spherical upper convex setting rupture disk positive arch top on its inside side, a plurality of radial rupture disk slits are evenly arranged on the annular of the rupture disk positive arch top, and a horizontal rupture disk slit is arranged between the bottom end of adjacent two rupture disk slits;The upper lining film includes annularly arranged upper lining film clamping ring on outside side and is fixed with the spherical upper convex setting upper lining film positive arch top on its inside side;The sealing film includes annularly arranged sealing film clamping ring on outside side and is fixed with the spherical upper convex setting sealing film positive arch top on its inside side;The lower lining film includes annularly arranged lower lining film clamping ring on outside side and is fixed with the spherical upper convex setting lower lining film positive arch top on its inside side;The novel back pressure resistant bracket includes annularly arranged back pressure bracket compression plate and is fixed with the back pressure bracket arch top of positive arch on its inside side, bracket round hole is arranged at the top center of the back pressure bracket arch top, and circular support plate of shape fitting is fixed below it by spot welding;A plurality of bracket radial slits are evenly arranged on the back pressure bracket arch top along its radial direction on the outside of the bracket round hole, and a plurality of square support plates are fixed below each bracket radial slit along its axial direction by spot welding;A plurality of strip-shaped support plates are arranged below the circular support plate, one end of the strip-shaped support plate is spot welded on the bottom surface of the back pressure bracket arch top;A horizontal bracket slit is arranged between the bottom end of adjacent two bracket radial slits, and bracket slit stop hole is arranged at the two ends of the bracket radial slit and the horizontal bracket slit.

[0007] Preferably, the sealing film is made of fluoroplastic.

[0008] Preferably, the upper lining film and the lower lining film are made of stainless steel plate and have the same material specification.

[0009] Preferably, one strip-shaped support plate is arranged at the middle position of adjacent two bracket radial slits, two-stage bending is arranged at the middle of the strip-shaped support plate, one end of the strip-shaped support plate is spot welded and fixed on the bottom surface of the back pressure bracket arch top, and the other end abuts against the bottom surface of the circular support plate.

[0010] Preferably, a plurality of square support plates are staggered and welded on the two sides of the bracket radial slit.

[0011] Preferably, the thickness of the novel back pressure resistant bracket is proportional to the size of back pressure, and the height of the novel back pressure resistant bracket matches the height of the rupture disk.

[0012] Preferably, the horizontal bracket slit is removed.

[0013] Compared with the prior art, the utility model has the beneficial effects that:

[0014] This utility model provides a radial slot structure bracket assembly for resisting back pressure of a positive arch slotted rupture disc. A bracket plate is spot-welded below the radial slot of the bracket, which features easier cracking during rupture, strong expansion capability, and wide applicability. It can be adjusted according to different usage scenarios, making it suitable for a wide range of applications. When used in combination with a large-diameter positive arch slotted rupture disc, it prevents the bracket from flying out along the circumferential slot as a whole, thus avoiding fragmentation. This utility model also has strong scalability; simple adjustments can be made according to rupture pressure, back pressure, and whether there are strict requirements for fragment-free operation, thereby enabling its use in various working conditions. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the present invention;

[0016] Figure 2 for Figure 1 Exploded view diagram;

[0017] Figure 3 for Figure 2 Structural diagram;

[0018] Figure 4 A bottom view of the new type of back pressure resistant bracket;

[0019] Figure 5 This is a top view of a rupture disc with an arched opening.

[0020] In the diagram: 1. Fracturing disc with open arch - 11. Fracturing disc clamping ring - 12. Fracturing disc arch top - 13. Fracturing disc seam - 14. Transverse fragment seam - 15. Upper liner - 2. Upper liner clamping ring - 21. Upper liner arch top - 22. Sealing film - 3. Sealing film clamping ring - 31. Sealing film arch top - 32. Lower liner - 4. Lower liner clamping ring - 41. Lower liner arch top - 42. New type of back pressure resistant bracket - 5. Back pressure bracket clamping plate - 51. Back pressure bracket arch top - 52. Bracket round hole - 53. Bracket radial seam - 54. Transverse bracket seam - 55. Bracket seam stop hole - 56. Circular bracket - 57. Strip bracket - 58. Square bracket - 59. Detailed Implementation

[0021] To enable those skilled in the art to better understand the technical solutions of this utility model, the technical solutions in the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings and specific embodiments.

[0022] Please refer to Figures 1-5 , Figure 1 This is a schematic diagram of the present invention; Figure 2 for Figure 1 Exploded view diagram; Figure 3 for Figure 2 Structural diagram;Figure 4 is a new type of back pressure resistant bracket view; Figure 5 is a top view of a positive arch split type rupture disc.

[0023] The utility model provides a kind of radial slit structure bracket assembly for positive arch split type rupture disc resistance to back pressure, including positive arch split type rupture disc 1, upper lining film 2, sealing film 3, lower lining film 4 and new type of back pressure resistant bracket 5 sequentially arranged from top to bottom and shape fitting.

[0024] The positive arch split type rupture disc 1 is the positive arch split type rupture disc used in prior art, including the rupture disc clamping ring 11 for clamping and fixing annular, the spherical upper convex setting rupture disc positive arch top 12 is fixedly connected in the rupture disc clamping ring 11, a plurality of radial rupture disc slits 13 are opened in the annular distribution of the rupture disc positive arch top 12, transverse rupture disc slit 14 is arranged between the bottom end of adjacent two rupture disc slits 13, the number and length of the radial rupture disc slit 13 and the transverse rupture disc slit 14 can control the burst pressure of the positive arch split type rupture disc 1.

[0025] The upper lining film 2 is lined in the lower side of the positive arch split type rupture disc 1, and is made of stainless steel plate to provide necessary strength and pressure resistance, including the upper lining film clamping ring 21 arranged annularly on the outside, the spherical upper convex setting upper lining film positive arch top 22 is fixedly connected in the inner side of the upper lining film clamping ring 21.

[0026] The sealing film 3 is lined in the lower side of the upper lining film 2 and is made of fluoroplastic to ensure good sealing and corrosion resistance, including the sealing film clamping ring 31 arranged annularly on the outside, the spherical upper convex setting sealing film positive arch top 32 is fixedly connected in the inner side of the sealing film clamping ring 31.

[0027] The lower lining film 4 is lined in the lower side of the sealing film 3, and its material specification is same with the upper lining film 2 to support the entire rupture disc structure, including the lower lining film clamping ring 41 arranged annularly on the outside, the spherical upper convex setting lower lining film positive arch top 42 is fixedly connected and arranged in the inner side of the lower lining film clamping ring 41.

[0028] The new type of back pressure resistant bracket 5 includes the back pressure resistant bracket compression plate 51 arranged annularly, the back pressure resistant bracket arch top 52 of positive arch shape is fixedly connected in the inner side of the back pressure resistant bracket compression plate 51, the bracket circular hole 53 is arranged at the top center of the back pressure resistant bracket arch top 52, a plurality of bracket radial slits 54 are arranged annularly along the radial direction of the back pressure resistant bracket arch top 52 on the outer side of the bracket circular hole 53, one transverse bracket slit 55 is arranged between the bottom end of adjacent two bracket radial slits 54, bracket slit stop hole 56 is arranged at both ends of the bracket radial slit 54 and the transverse bracket slit 55.

[0029] A circular supporting plate 57 is spot-welded below the bracket circular hole 53 and is also arranged as a regular dome and matches the shape of the back pressure bracket dome 52; a plurality of strip-shaped supporting plates 58 are arranged below the circular supporting plate 57, one of the strip-shaped supporting plates 58 is arranged at the middle position of two adjacent bracket radial seams 54, the strip-shaped supporting plates 58 are arranged along the back pressure bracket dome 52 in the radial direction, and the middle of the strip-shaped supporting plates 58 is provided with two-stage downward bending, so that one end of the strip-shaped supporting plates 58 is spot-welded on the bottom surface of the back pressure bracket dome 52 and the other end abuts against the bottom surface of the circular supporting plate 57.

[0030] A plurality of square supporting plates 59 are spot-welded on the bottom surface of the back pressure bracket dome 52 below each bracket radial seam 54 along the axial direction, and the plurality of square supporting plates 59 are staggered and welded on both sides of the bracket radial seam 54.

[0031] The thickness of the novel back pressure resistant bracket 5 is proportional to the size of the back pressure, and the height matches the height of the bursting disc, so as to ensure that the spot-welded square supporting plates 59 and the upper regular dome slit type bursting disc match each other and protect the bursting disc from being damaged under the working conditions of vacuum or back pressure.

[0032] Under normal working conditions, i.e., when the bursting disc is not subjected to back pressure, the regular dome slit type bursting disc assembly as a pressure relief element remains stable and cooperates with the field flange and fasteners to achieve a sealing effect.

[0033] When the large-diameter regular dome slit type bursting disc is subjected to back pressure, the uppermost regular dome slit type bursting disc as a pressure relief element is subjected to a reverse force, at this time, the radial seam structure bracket assembly spot-welded at the lowermost position of the bursting disc assembly offsets the reverse force on the regular dome slit type bursting disc. Thus, the bursting disc is protected from being damaged by vacuum or back pressure, and the normal bursting effect can be achieved, at this time, the root transverse bracket seam can be removed; when the radial seam structure bracket assembly with the circular supporting plate and the square supporting plate has sufficient back pressure resistance, the square supporting plate can be removed.

[0034] The radial seam structure bracket assembly for resisting back pressure of the regular dome slit type bursting disc has the advantages that the bracket supporting plate is spot-welded below the bracket radial seam, the bracket is easier to crack during bursting, has strong expansibility, has a wide application range, can be adjusted according to the use conditions of different occasions, has a wide range of use occasions, and when combined with the large-diameter regular dome slit type bursting disc, the bracket can be prevented from flying out along the ring seam and generating fragments; the radial seam structure bracket assembly has strong expansibility, can be simply adjusted according to the bursting pressure, back pressure and whether there is a strict requirement for no fragments, and thus can be used in different working conditions.

[0035] Although the embodiments of the present application have been shown and described, it is apparent that the described embodiments are only part of the embodiments of the present application, but not all the embodiments. Based on the embodiments in the present application, it can be understood by those skilled in the art that, without departing from the principles and spirits of the present application, all other embodiments obtained by various changes, modifications, replacements and variations of these embodiments without creative labor belong to the protection scope of the present application.

Claims

1. A radial slit structure carrier assembly for a positive pop open slit burst disc resistant to back pressure, characterized by: The device comprises a positive arch split type rupture disc (1), an upper lining film (2), a sealing film (3), a lower lining film (4) and a new type back pressure resistant bracket (5) arranged in sequence from top to bottom and in shape conformity; the positive arch split type rupture disc (1) comprises a circular ring shaped rupture disc clamping ring (11) and a spherical upper convex rupture disc positive arch top (12) fixed to the inner side of the rupture disc clamping ring (11), a plurality of radial rupture disc slits (13) are evenly arranged on the rupture disc positive arch top (12), and a horizontal rupture disc slit (14) is arranged between the bottom ends of two adjacent rupture disc slits (13); the upper lining film (2) comprises an outer side annularly arranged upper lining film clamping ring (21) and a spherical upper convex upper lining film positive arch top (22) fixed to the inner side of the upper lining film clamping ring (21); the sealing film (3) comprises an outer side annularly arranged sealing film clamping ring (31) and a spherical upper convex sealing film positive arch top (32) fixed to the inner side of the sealing film clamping ring (31); the lower lining film (4) comprises an outer side annularly arranged lower lining film clamping ring (41) and a spherical upper convex lower lining film positive arch top (42) fixed to the inner side of the lower lining film clamping ring (41); the new type back pressure resistant bracket (5) comprises a back pressure resistant bracket compression plate (51) arranged in a ring shape and a back pressure resistant bracket arch top (52) fixed to the inner side of the back pressure resistant bracket compression plate (51) in a positive arch shape, a bracket circular hole (53) is arranged at the top center of the back pressure resistant bracket arch top (52) and a circular bracket plate (57) in shape conformity is fixed below the bracket circular hole (53) by spot welding; a plurality of bracket radial slits (54) are evenly arranged on the back pressure resistant bracket arch top (52) along the radial direction outside the bracket circular hole (53); a plurality of square bracket plates (59) are fixed below each bracket radial slit (54) along the axial direction by spot welding; a plurality of strip bracket plates (58) are arranged below the circular bracket plate (57), one end of the strip bracket plate (58) is spot welded on the bottom surface of the back pressure resistant bracket arch top (52); a horizontal bracket slit (55) is arranged between the bottom ends of two adjacent bracket radial slits (54), and bracket slit stop holes (56) are arranged at both ends of the bracket radial slit (54) and the horizontal bracket slit (55).

2. The radial slit structure carrier assembly for positive buckling slit-type burst disc against back pressure as claimed in claim 1 wherein: The sealing film (3) is made of fluoroplastic.

3. The radial slit structure carrier assembly for positive buckling slit-type burst disc against back pressure of claim 2, wherein: The upper lining film (2) and the lower lining film (4) are made of stainless steel plates and have the same material specification.

4. The radial slit structure carrier assembly for positive buckling slit-type burst disc against back pressure of claim 3, wherein: One strip bracket plate (58) is arranged at the middle position between two adjacent bracket radial slits (54), two downward bending levels are arranged at the middle of the strip bracket plate (58), one end of the strip bracket plate (58) is fixed on the bottom surface of the back pressure resistant bracket arch top (52) by spot welding, and the other end abuts against the bottom surface of the circular bracket plate (57).

5. The radial slit structure carrier assembly for positive buckling slit-type burst disc against back pressure of claim 4, wherein: A plurality of square bracket plates (59) are staggered and welded on both sides of the bracket radial slit (54).

6. The radial slit structure carrier assembly for positive pop open slit blast shield against back pressure of claim 5, wherein: The thickness of the new type back pressure resistant bracket (5) is proportional to the size of the back pressure, and the height matches the height of the rupture disc.

7. The radial cut construction carrier assembly for positive pop fracture vent back pressure according to any one of claims 1-6, wherein: The horizontal bracket slit (55) is removed.

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