Novel bracket assembly for large-diameter back-pressure-resistant positive arch slotted rupture disk

Abstract

The utility model discloses a novel bracket assembly for a large-caliber backpressure-resistant positive arch slotted rupture disk, which relates to the technical field of rupture disks and comprises a positive arch slotted rupture disk, a first lining film, a sealing film, a second lining film and a backpressure-resistant bracket, according to the novel bracket assembly for the forward-arch slotted rupture disk, under the working condition that the forward-arch slotted rupture disk needs back pressure, the novel bracket assembly has the function of bearing vacuum and back pressure, the rupture disk can be protected from being damaged by reverse back pressure or vacuum pumping, and the rupture disk can act so that the purpose of normal cracking and releasing can be achieved; according to the novel bracket assembly, the three-petal spiral bracket is adopted, cracking is easier, machining is easy, cost is saved, and meanwhile the capacity of a multi-petal radial seam bracket for bearing high back pressure is achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of bursting discs, in particular to a novel bracket component for large-caliber back-pressure-resistant positive arch slotted bursting discs. Background Art

[0002] In the prior art, large-diameter positive arch slotted bursting disc assemblies are widely used in important occasions such as chemical industry, petrochemical industry, metallurgy, nuclear power, etc., and are mainly suitable for working conditions with low bursting pressure. The positive arch slotted bursting disc with a back pressure bracket has the function of withstanding vacuum and back pressure.

[0003] The existing annular seam open bracket technology requires spot welding of more back pressure brackets to withstand the back pressure. However, such a structure will cause the back pressure bracket to sag due to stress concentration due to too many spot weldings, and spot welding too many back pressure brackets will also greatly increase the production cost. Utility Model Content

[0004] The purpose of the utility model is to provide a new type of bracket assembly for large-caliber back-pressure resistant positive arch open-slit bursting discs, so as to solve the problem that the existing annular seam open-type bracket technology proposed in the above-mentioned background technology needs to withstand the back pressure by spot welding more back pressure brackets, but such a structure will cause the back pressure bracket to burst due to stress concentration due to excessive spot welding, and spot welding too many back pressure brackets will also greatly increase the production cost.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a new type of bracket assembly for large-caliber back-pressure resistant positive arch slotted bursting disc, comprising a positive arch slotted bursting disc, a first lining membrane, a sealing membrane, a second lining membrane, and a back-pressure resistant bracket which are arranged in sequence from top to bottom and have the same shape; the positive arch slotted bursting disc comprises an outer bursting disc clamping ring and an inner fixed bursting disc positive arch top; the first lining membrane comprises an outer first lining membrane clamping ring and an inner fixed first lining membrane positive arch top; the sealing membrane comprises an outer sealing membrane clamping ring and A sealing membrane positive arch fixed on the inner side; the second lining membrane includes an outer second lining membrane clamping ring and an inner second lining membrane positive arch fixed; the back-pressure resistant bracket includes an outer bracket clamping ring and an inner bracket positive arch fixed thereto, three radially opened bracket radial seams are evenly distributed on the bracket positive arch, and the bottom end of each bracket radial seam is connected to a bracket root annular seam parallel to the inner ring of the bracket clamping ring; back-pressure support plates are spot-welded and fixed on the bottom surface of the back-pressure resistant bracket along the bracket radial seams and the bracket root annular seams.

[0006] Preferably, the positive arch slit type bursting disc is the positive arch slit type bursting disc in the prior art; the bursting disc clamping ring is annularly arranged; the positive arch top of the bursting disc is spherically convexly arranged, and a plurality of radially opened fragmentation slits are evenly distributed annularly on the positive arch top of the bursting disc.

[0007] Preferably, the first liner film clamping ring is annular in shape, and the first liner film positive dome is spherically convex in shape.

[0008] Preferably, the sealing film clamping ring is annular in shape, and the sealing film positive dome is spherically convex.

[0009] Preferably, the second lining film clamping ring is annular in shape, and the second lining film positive dome is spherically convex in shape.

[0010] Preferably, the back-pressure resistant bracket includes an annularly arranged bracket clamping ring and a spherically upwardly convexly arranged bracket positive arch is fixedly connected to the inner side thereof, three radially opened bracket radial slits are evenly distributed in an annular manner on the bracket positive arch, and the bottom end of each bracket radial slit is connected to a bracket root annular slit parallel to the inner ring of the bracket clamping ring; on the bottom surface of the back-pressure resistant bracket, a long back-pressure support plate is spot-welded along the bracket radial seam, and a short back-pressure support plate is spot-welded along the bracket root annular seam.

[0011] Preferably, the height of the back-pressure resistant bracket matches the height of the positive arch slotted bursting disc.

[0012] Preferably, the back-pressure resistant bracket is lined on the lower side of the second lining membrane and is welded together with the positive arch slit-type bursting disc.

[0013] Preferably, a plurality of annular evenly distributed and coaxial flange holes are commonly provided on the bursting disc clamping ring, the first lining membrane clamping ring, the sealing membrane clamping ring, the second lining membrane clamping ring and the bracket clamping ring.

[0014] Preferably, the first lining membrane, the second lining membrane and the back pressure resistant bracket are all made of stainless steel plates; and the sealing membrane is made of fluoroplastics.

[0015] Compared with the prior art, the beneficial effects of the utility model are:

[0016] The utility model provides a novel bracket assembly for a positive arch slit type bursting disc. Under the working condition that the positive arch slit type bursting disc requires back pressure, the novel bracket assembly has the function of withstanding vacuum and back pressure, which can not only protect the bursting disc from being damaged by reverse back pressure or vacuum, but also enable the bursting disc to operate to achieve the purpose of normal cracking and release. The novel bracket assembly provided by the utility model adopts a three-petal spiral bracket, which is easier to crack, easy to process, and cost-saving, and at the same time has the ability of a multi-petal radial slit bracket to withstand higher back pressure. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is an explosion diagram of the utility model;

[0018] Figure 2 for Figure 1 Structural diagram;

[0019] Figure 3 This is a top view of a positive arch slotted bursting disc;

[0020] Figure 4 This is a bottom view of the back pressure resistant bracket;

[0021] Figure 5 for Figure 4 Schematic diagram of spot welding back pressure support;

[0022] Figure 6 This is a schematic diagram of the assembly of the utility model;

[0023] In the figure: positive arch slit type bursting disc -1, bursting disc clamping ring -11, bursting disc positive arch top -12, fragment gap -13, flange hole -14, first lining membrane -2, first lining membrane clamping ring -21, first lining membrane positive arch top -22, sealing membrane -3, sealing membrane clamping ring -31, sealing membrane positive arch top -32, second lining membrane -4, second lining membrane clamping ring -41, second lining membrane positive arch top -42, back pressure resistant bracket -5, bracket clamping ring -51, bracket positive arch top -52, bracket radial gap -53, bracket root annular gap -54, long back pressure bracket -55, short back pressure bracket -56. DETAILED DESCRIPTION

[0024] In order to enable those skilled in the art to better understand the technical solution of the present utility model, the technical solution in the embodiments of the present utility model is clearly and completely described below in conjunction with the accompanying drawings and specific embodiments.

[0025] Please refer to Figure 1-6 , Figure 1 This is an explosion diagram of the utility model; Figure 2 for Figure 1 Structural diagram; Figure 3 This is a top view of a positive arch slotted bursting disc; Figure 4 This is a bottom view of the back pressure resistant bracket; Figure 5 for Figure 4 Schematic diagram of spot welding back pressure support; Figure 6 This is a schematic diagram of the utility model after assembly.

[0026] The utility model provides a novel bracket assembly for a large-caliber back-pressure-resistant positive arch slit bursting disc. Under the working condition that the large-caliber positive arch slit bursting disc requires back pressure, the novel bracket assembly has the function of withstanding vacuum and back pressure, can protect the bursting disc from being damaged by reverse back pressure or vacuum, and can also enable the bursting disc to operate to achieve the purpose of normal cracking and discharge; it comprises a positive arch slit bursting disc 1, a first lining film 2 bonded to the bottom surface of the positive arch slit bursting disc 1 is arranged below the positive arch slit bursting disc 1, a sealing film 3 bonded to the bottom surface of the first lining film 2 is arranged below the first lining film 2, a second lining film 4 bonded to the bottom surface of the first lining film 2 is arranged below the sealing film 3, and a back-pressure-resistant bracket 5 bonded to the bottom surface of the second lining film 4 is arranged below the second lining film 4.

[0027] The positive arched slit bursting disc 1 adopts the positive arched slit bursting disc in the prior art, including a bursting disc clamping ring 11 arranged in an annular manner on the outside, a spherically convexly arranged bursting disc positive arch top 12 is fixedly connected to the inner side of the bursting disc clamping ring 11, and a plurality of radially opened fragmentation slits 13 are evenly distributed in an annular manner on the bursting disc positive arch top 12. The bursting pressure of the positive arched slit bursting disc 1 can be controlled by setting the number and length of the fragmentation slits 13.

[0028] The first lining membrane 2 is lined on the lower side of the positive arch slit type bursting disc 1, and is made of stainless steel plate to provide necessary strength and pressure resistance, including a first lining membrane clamping ring 21 arranged in an outer ring shape, and a first lining membrane positive arch top 22 arranged in a spherical upward shape is fixedly connected to the inner side of the first lining membrane clamping ring 21.

[0029] The sealing membrane 3 is lined on the lower side of the first lining membrane 2 and is made of fluoroplastic to ensure good sealing and corrosion resistance. It includes a sealing membrane clamping ring 31 arranged in an outer ring shape, and a sealing membrane positive dome 32 arranged in a spherical upward shape is fixed to the inner side of the sealing membrane clamping ring 31.

[0030] The second lining membrane 4 is lined on the lower side of the sealing membrane 3, and its material specifications are the same as those of the first lining membrane 2 to support the entire bursting disc structure; it includes a second lining membrane clamping ring 41 arranged in an outer ring shape, and a second lining membrane positive dome 42 arranged in a spherical upward convex shape is fixedly arranged on the inner side of the second lining membrane clamping ring 41.

[0031] The back pressure resistant bracket 5 is a three-petal spiral bracket made of stainless steel, lined on the lower side of the second lining membrane 4 and welded together with the positive arch slot type bursting disc 1, and the height of the back pressure resistant bracket 5 matches the height of the positive arch slot type bursting disc 1; it includes a bracket clamping ring 51 arranged in an annular manner on the outer side, a bracket positive arch 52 arranged in a spherical upward convex manner is fixedly connected to the inner side of the bracket clamping ring 51, and three radial bracket radial slits 53 are evenly distributed in an annular manner on the bracket positive arch 52, and the bottom end of each bracket radial slit 53 is connected to the bracket clamping ring 51. The inner ring of the ring 51 is parallel to the bracket root annular seam 54; on the bottom surface of the back-pressure resistant bracket 5, a long back-pressure support piece 55 is spot-welded along the bracket radial seam 53, and a short back-pressure support piece 56 is spot-welded along the bracket root annular seam 54; since the height of the back-pressure resistant bracket 5 matches the height of the positive arch open-slit bursting disc 1, the back-pressure resistant bracket 5 and the upper positive arch open-slit bursting disc 1 fit better with each other when the long back-pressure support piece 55 and the short back-pressure support piece 56 are spot-welded, thereby protecting the positive arch open-slit bursting disc 1 from damage under vacuum or back-pressure conditions.

[0032] A plurality of annular evenly distributed and coaxial flange holes 14 are commonly provided on the bursting disc clamping ring 11, the first lining membrane clamping ring 21, the sealing membrane clamping ring 31, the second lining membrane clamping ring 41, and the bracket clamping ring 51, and flange bolts are provided through the flange holes 14 for fastening connection with the flange of the equipment; when the positive arch slit type bursting disc 1 is not subjected to back pressure under normal working conditions, the positive arch slit type bursting disc 1 as a pressure relief element remains stable, and a sealing effect will be achieved in cooperation with the on-site flange and fasteners; when the positive arch slit type bursting disc 1 encounters back pressure, the uppermost positive arch slit type bursting disc 1 as a pressure relief element is subjected to a reverse force, and at this time, the reverse force on the positive arch slit type bursting disc 1 is offset by the lowermost back pressure resistant bracket 5, thereby protecting the positive arch slit type bursting disc 1 from damage caused by vacuum or back pressure, and achieving a normal blasting effect.

[0033] The utility model provides a novel bracket assembly for a positive arch slit type bursting disc. Under the working condition that the positive arch slit type bursting disc requires back pressure, the novel bracket assembly has the function of withstanding vacuum and back pressure, which can not only protect the bursting disc from being damaged by reverse back pressure or vacuum, but also enable the bursting disc to operate to achieve the purpose of normal cracking and release. The novel bracket assembly provided by the utility model adopts a three-petal spiral bracket, which is easier to crack, easy to process, and cost-saving, and at the same time has the ability of a multi-petal radial slit bracket to withstand higher back pressure.

[0034] Although the embodiments of the utility model have been shown and described, it is obvious that the described embodiments are only a part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, it can be understood by ordinary technicians in this field that all other embodiments obtained by making various changes, modifications, substitutions and variations to these embodiments without departing from the principle and spirit of the utility model and without making creative work, all belong to the scope of protection of the utility model.

Claims

1. A novel bracket assembly for large-caliber back-pressure resistant positive arch slotted bursting discs, characterized in that: A positive arched slit-type bursting disc (1), a first lining membrane (2), a sealing membrane (3), a second lining membrane (4), and a back pressure resistant bracket (5) are arranged in sequence from top to bottom and have the same shape; the positive arched slit-type bursting disc (1) comprises an outer bursting disc clamping ring (11) and an inner fixed bursting disc positive arch (12); the first lining membrane (2) comprises an outer first lining membrane clamping ring (21) and an inner fixed first lining membrane positive arch (22); the sealing membrane (3) comprises an outer sealing membrane clamping ring (31) and an inner fixed sealing membrane positive arch (32); the second lining membrane (4) comprises an outer A second lining membrane clamping ring (41) and a second lining membrane positive dome (42) fixed on the inner side; the back pressure resistant bracket (5) comprises an outer bracket clamping ring (51) and a bracket positive dome (52) fixed on the inner side, three radial bracket radial seams (53) are evenly distributed in an annular shape on the bracket positive dome (52), and the bottom end of each bracket radial seam (53) is connected to a bracket root annular seam (54) parallel to the inner ring of the bracket clamping ring (51); a back pressure support plate is spot-welded and fixed on the bottom surface of the back pressure resistant bracket (5) along the bracket radial seams (53) and the bracket root annular seam (54).

2. The novel bracket assembly for large-caliber back-pressure resistant positive arch slotted bursting disc according to claim 1 is characterized in that: The positive arched slit-type bursting disc (1) is a positive arched slit-type bursting disc in the prior art; the bursting disc clamping ring (11) is arranged in an annular shape; the positive arch top (12) of the bursting disc is arranged in a spherical upward convex shape, and a plurality of radially opened fragmentation slits (13) are evenly distributed in an annular shape on the positive arch top (12) of the bursting disc.

3. The novel bracket assembly for large-caliber back-pressure resistant positive arch slotted bursting disc according to claim 1 is characterized in that: The first liner film clamping ring (21) is annularly arranged, and the first liner film positive dome (22) is spherically convexly arranged.

4. The novel bracket assembly for large-caliber back-pressure resistant positive arch slotted bursting disc according to claim 1 is characterized in that: The sealing film clamping ring (31) is annularly arranged, and the sealing film positive dome (32) is spherically convexly arranged.

5. The novel bracket assembly for large-caliber back-pressure resistant positive arch slotted bursting disc according to claim 1 is characterized in that: The second lining film clamping ring (41) is annularly arranged, and the second lining film positive dome (42) is spherically convexly arranged.

6. The novel bracket assembly for large-caliber back-pressure resistant positive arch slotted bursting disc according to claim 1 is characterized in that: The back-pressure resistant bracket (5) comprises an annular bracket clamping ring (51) and a spherically convex bracket positive dome (52) is fixedly connected to the inner side thereof; three radially opened bracket radial slits (53) are evenly distributed in an annular manner on the bracket positive dome (52); the bottom end of each bracket radial slit (53) is connected to a bracket root annular slit (54) parallel to the inner ring of the bracket clamping ring (51); a long back-pressure support plate (55) is spot-welded and fixed along the bracket radial slit (53), and a short back-pressure support plate (56) is spot-welded and fixed along the bracket root annular slit (54) on the bottom surface of the back-pressure resistant bracket (5).

7. The novel bracket assembly for large-caliber back-pressure resistant positive arch slotted bursting disc according to claim 1 is characterized in that: The height of the back pressure resistant bracket (5) matches the height of the positive arch slotted bursting disc (1).

8. The novel bracket assembly for large-caliber back-pressure resistant positive arch slotted bursting disc according to claim 1 is characterized in that: The back pressure resistant bracket (5) is lined on the lower side of the second lining membrane (4) and is welded together with the positive arch open-slit type bursting disc (1) into one body.

9. The novel bracket assembly for large-caliber back-pressure resistant positive arch slotted bursting disc according to any one of claims 1 to 8, characterized in that: A plurality of evenly distributed and coaxial flange holes (14) are commonly provided on the bursting disc clamping ring (11), the first lining membrane clamping ring (21), the sealing membrane clamping ring (31), the second lining membrane clamping ring (41), and the bracket clamping ring (51).

10. The novel bracket assembly for large-caliber back-pressure resistant positive arch slotted bursting disc according to claim 9, characterized in that: The first lining membrane (2), the second lining membrane (4) and the back pressure resistant bracket (5) are all made of stainless steel plates; and the sealing membrane (3) is made of fluoroplastics.

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