High-pressure anti-pull-off positive arch slotting type rupture disk device
By designing the upper and lower clamping device and pin fixing structure, the problem of easy pull-off of the front arch opening-shaped bursting plate under high pressure is solved, and the sealing property and the stability of the bursting pressure are achieved under high pressure.
Patent Information
- Application Number
- CN202422023337.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-08-21
- Publication Date
- 2025-06-24
- Estimated Expiration
- 2034-08-21
AI Technical Summary
The existing high-pressure positive arch slot-type blasting plates are prone to pulling off under high pressure, resulting in unstable blasting pressure and bending and twisting of the diaphragm surface, affecting the cracking state.
A high-pressure anti-pull-off type blasting disk device including a lower clamp and an upper clamp arranged opposite to each other is designed. The blasting disk is fixed by a plurality of pins to ensure uniform clamping and resist the inward pulling force at the edge of the blasting disk.
It effectively prevents the blasting pull-off of the blasting disc, ensures the sealing property under high pressure and the stability of the blasting pressure, and avoids bending and twisting of the diaphragm.
Smart Images
Figure CN223019535U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of bursting discs, in particular to a positive-arch slotted bursting disc device with high-pressure anti-pull-off performance. Background Technique
[0002] The bursting pressure of a positive-arch slotted bursting disc is mainly determined by the hole spacing on the arch surface. It is convenient to manufacture, has a relatively high operating ratio and wide applicability, is suitable for both gas and liquid media, and is widely used in multiple industries such as petroleum, chemical industry, pharmaceutical, metallurgy, and gas. For a high-pressure positive-arch slotted bursting disc, the clamping of the bursting disc is also very important. Usually, the bursting disc is installed in a clamp, and then flange and bolt connectors are used to clamp and seal the bursting disc in the clamp to ensure that it does not come out from the sealing surface under high pressure, and it is required that the clamping is uniform without uneven tightness, resulting in local loosening and pulling off of the bursting disc at the sealing surface. Local loosening will not only affect the bursting pressure but also cause bending and distortion on the surface of the diaphragm, affecting the cracking state of the bursting disc.
[0003] At present, to solve the problem of pull-off, generally, a smaller sealing surface, adding a sealing boss on the sealing surface or using a flanged seal is adopted. These structures solve some problems but also have certain defects. For example, under high pressure, the clamping of a small sealing surface also has problems of insufficient clamping, and the sealing boss wears out after being used several times. The positive-arch slotted bursting disc is a composite-structured bursting disc, usually composed of structures such as a bursting disc, a sealing film, a lining film, and a bracket. Due to the excessive number of structural combination layers, the overall structure thickness is relatively thick, resulting in a poor effect of the flanged structure. Summary of the Utility Model
[0004] The purpose of the utility model is to provide a positive-arch slotted bursting disc device with high-pressure anti-pull-off performance to solve the problem of the existing high-pressure positive-arch slotted bursting disc being pulled off as mentioned in the above background technique.
[0005] To achieve the above purpose, the utility model provides the following technical solution: A positive-arch slotted bursting disc device with high-pressure anti-pull-off performance includes a lower clamp and an upper clamp that are vertically and oppositely arranged. A bursting disc is clamped between the two clamps, and the part of the bursting disc clamped by the two clamps is positioned and fixed through a plurality of pins. The lower clamp is arranged in a vertical circular ring shape, and a plurality of downward concave lower clamp pin holes are uniformly arranged on the same circumference of its top surface. The upper clamp is arranged in a vertical circular ring shape, and a plurality of upward concave upper clamp pin holes are uniformly arranged on the same circumference of its bottom surface. The bursting disc includes a circular-ring-shaped bursting disc clamping ring, and a bursting disc positive-arch top is fixedly connected to the inner side of the bursting disc clamping ring. A plurality of bursting disc edge through holes are uniformly arranged on the same circumference of the bursting disc clamping ring. The upper clamp pin holes are the same in specification as the lower clamp pin holes and are coaxially arranged with the bursting disc edge through holes, and a cylindrical pin is commonly arranged inside.
[0006] Preferably, the through hole at the axis of the lower gripper is the gripper inlet. A sealing convex surface that protrudes upward in a circular shape is provided on the top surface of the lower gripper. The outer diameter of the sealing convex surface is smaller than the outer diameter of the lower gripper. A plurality of downward concave lower gripper pin holes are evenly provided on the same circumference outside the sealing convex surface on the top surface of the lower gripper.
[0007] Preferably, the through hole at the axis of the upper gripper is the gripper outlet.
[0008] Preferably, a plurality of bursting disc slits are annularly and evenly arranged along the radial direction on the crown of the bursting disc. Each bursting disc slit is arranged in a two-stage manner.
[0009] Preferably, the through hole at the edge of the bursting disc is larger than the diameters of the lower gripper pin holes and the upper gripper pin holes.
[0010] Preferably, the diameter of the pin is φ1, the length is l1, and the number is m1. The diameter of the lower gripper pin hole is φ2, the depth is h1, and the number is m2. The diameter of the central circle where a plurality of lower gripper pin holes are located is d1; the diameter of the upper gripper pin hole is φ3, the depth is h2, and the number is m3. The diameter of the central circle where a plurality of upper gripper pin holes are located is d2; the diameter of the through hole at the edge of the bursting disc of the bursting disc is φ4, and the number is m4. The diameter of the central circle where the through hole at the edge of the bursting disc is located is d3, and the following relationships are satisfied:
[0011] 2mm ≤ φ1 ≤ 16mm,
[0012] φ2 = φ1,
[0013] φ1 + 0.5 ≤ φ3 ≤ φ1 + 6,
[0014] φ1 + 0.5 ≤ φ4 ≤ φ1 + 6,
[0015] 4mm ≤ m1 ≤ 48mm, and it is an even number,
[0016] m4 = m3 = m2 = m1,
[0017] d1 = d2 = d3,
[0018] 5mm ≤ l1 ≤ 30mm,
[0019] 3mm ≤ h1 ≤ 15mm,
[0020] h2 > l1 - h1.
[0021] Preferably, two inward concave screw holes are provided on the side walls of the lower gripper and the upper gripper on the same diameter, and gripper lifting rings are screwed and fixed.
[0022] Compared with the prior art, the beneficial effects of the present utility model are as follows:
[0023] For the positive-arch slotted rupture disc device with high-pressure anti-pull-off provided by the present utility model, when the rupture disc is clamped between the lower holder and the upper holder, the through holes at the edge of the rupture disc are fixed by the pins installed between the upper and lower holders. With this structure, the inward pulling force generated at the edge of the rupture disc during the rupture of the rupture disc is resisted, and the problem of rupture and pull-off of the rupture disc is solved. BRIEF DESCRIPTION OF THE DRAWINGS
[0024] Figure 1 is a top view of the present utility model;
[0025] Figure 2 is Figure 1 a sectional view taken along line A-A in
[0026] Figure 3 is a top view of the lower holder;
[0027] Figure 4 is Figure 3 a sectional view taken along line B-B in
[0028] Figure 5 is a top view of the rupture disc;
[0029] Figure 6 is Figure 5 a sectional view taken along line C-C in
[0030] Figure 7 is a bottom view of the upper holder;
[0031] Figure 8 is Figure 7 a sectional view taken along line D-D in
[0032] Figure 9 is a front view of the pin;
[0033] In the figure: lower holder - 1, holder inlet - 11, sealing convex surface - 12, lower holder pin hole - 13, rupture disc - 2, rupture disc clamping ring - 21, positive-arch top of rupture disc - 22, rupture disc slot - 23, through hole at the edge of rupture disc - 24, upper holder - 3, holder outlet - 31, upper holder pin hole - 32, pin - 4, holder lifting ring - 5. DETAILED DESCRIPTION OF THE EMBODIMENTS
[0034] In order to enable those skilled in the art to better understand the technical solutions of the present utility model, the technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings and specific embodiments.
[0035] Please refer to Figures 1-9 , Figure 1 which is a top view of the present utility model;Figure 2 is Figure 1 a sectional view taken along A - A in; Figure 3 is a top view of the lower clamp; Figure 4 is Figure 3 a sectional view taken along B - B in; Figure 5 is a top view of the rupture disc;
[0036] Figure 6 is Figure 5 a sectional view taken along C - C in; Figure 7 is a bottom view of the upper clamp; Figure 8 is Figure 7 a sectional view taken along D - D in; Figure 9 is a front view of the pin.
[0037] The utility model provides a positive - arch slotted rupture disc device with high - pressure anti - pull - off, which includes a lower clamp 1 and an upper clamp 3 that are arranged vertically and oppositely. A rupture disc 2 is clamped between the two clamps, and the part of the rupture disc 2 clamped by the two clamps is positioned and fixed by a plurality of pins 4.
[0038] The lower clamp 1 is arranged in a vertical circular - ring shape, and the through - hole at its axis is the clamp inlet 11. A circular - ring - shaped upward - convex sealing convex surface 12 is arranged on the top surface of the lower clamp 1. The outer diameter of the sealing convex surface 12 is smaller than the outer diameter of the lower clamp 1. A plurality of downward - concave lower - clamp pin holes 13 are uniformly arranged on the same circumference outside the sealing convex surface 12 on the top surface of the lower clamp 1.
[0039] The upper clamp 3 is arranged in a vertical circular - ring shape, and the through - hole at its axis is the clamp outlet 31. A plurality of upward - concave upper - clamp pin holes 32 are uniformly arranged on the same circumference on the bottom surface of the upper clamp 3. The upper - clamp pin holes 32 have the same specification as the lower - clamp pin holes 13 and are coaxially arranged.
[0040] The rupture disc 2 includes a rupture - disc clamping ring 21 arranged in a circular - ring shape. A rupture - disc positive - arch top 22 is fixedly connected to the inner side of the rupture - disc clamping ring 21, and a plurality of rupture - disc slots 23 are annularly and uniformly arranged along the radial direction of the rupture - disc positive - arch top 22. Each rupture - disc slot 23 is arranged in a two - section form. A plurality of rupture - disc edge through - holes 24 are uniformly arranged on the same circumference on the rupture - disc clamping ring 21. The rupture - disc edge through - holes 24 are larger than the diameters of the lower - clamp pin holes 13 and the upper - clamp pin holes 32 and are coaxially arranged. Cylindrical pins 4 are jointly arranged in the rupture - disc edge through - holes 24, the lower - clamp pin holes 13, and the upper - clamp pin holes 32.
[0041] The diameter of the pin 4 is φ1, the length is l1, and the number is m1. The diameter of the pin hole 13 of the lower clamp is φ2, the depth is h1, and the number is m2. The diameter of the central circle where multiple lower clamp pin holes 13 are located is d1. The diameter of the pin hole 32 of the upper clamp is φ3, the depth is h2, and the number is m3. The diameter of the central circle where multiple upper clamp pin holes 32 are located is d2. The diameter of the through hole 24 at the edge of the bursting disc 2 is φ4, and the number is m4. The diameter of the central circle where the through hole 24 at the edge of the bursting disc is located is d3, and the following relationships are satisfied:
[0042] 2mm ≤ φ1 ≤ 16mm,
[0043] φ2 = φ1,
[0044] φ1 + 0.5 ≤ φ3 ≤ φ1 + 6,
[0045] φ1 + 0.5 ≤ φ4 ≤ φ1 + 6,
[0046] 4mm ≤ m1 ≤ 48mm, and it is an even number,
[0047] m4 = m3 = m2 = m1,
[0048] d1 = d2 = d3,
[0049] 5mm ≤ l1 ≤ 30mm,
[0050] 3mm ≤ h1 ≤ 15mm,
[0051] h2 > l1 - h1.
[0052] In addition, on the side walls of the lower clamp 1 and the upper clamp 2, two concave screw holes are provided on the same diameter and a clamp lifting ring 5 is screwed and fixed, which is used to assist in hoisting the clamp.
[0053] For the positive-arch slotted bursting disc device with high-pressure anti-pull-off provided by the present utility model, when the bursting disc is clamped between the lower clamp and the upper clamp, the through holes at the edge of the bursting disc are fixed by the pins installed between the upper and lower clamps. With this structure, the inward pulling force generated at the edge of the bursting disc during the bursting of the bursting disc is resisted, and the problem of bursting and pulling-off of the bursting disc is solved.
[0054] Although the embodiments of the present utility model have been shown and described, obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all embodiments. Based on the embodiments in the present utility model, for those of ordinary skill in the art, it can be understood that without departing from the principles and spirit of the present utility model, all other embodiments obtained by making various changes, modifications, substitutions, and variations to these embodiments without creative work belong to the scope of protection of the present utility model.
Claims
1. A high-pressure, pull-off-proof, positive-arch, slotted bursting disc device, characterized in that: The invention comprises a lower clamp (1) and an upper clamp (3) which are arranged vertically opposite to each other, a bursting disc (2) is clamped between the two clamps, and the bursting disc (2) is positioned and fixed at the part clamped by the two clamps by a plurality of pins (4); the lower clamp (1) is arranged in a vertical circular ring shape and has a plurality of concave lower clamp pin holes (13) evenly arranged on the same circumference on its top surface; the upper clamp (3) is arranged in a vertical circular ring shape and has a plurality of concave upper clamp pin holes (13) evenly arranged on the same circumference on its bottom surface. The bursting disc (2) comprises a bursting disc clamping ring (21) arranged in an annular shape, a bursting disc positive dome (22) is fixedly connected to the inner side of the bursting disc clamping ring (21), and a plurality of bursting disc edge through holes (24) are evenly arranged on the same circumference of the bursting disc clamping ring (21); the upper clamping device pin hole (32) and the lower clamping device pin hole (13) have the same specifications and are coaxially arranged with the bursting disc edge through hole (24), and a cylindrical pin (4) is arranged inside them.
2. The high-pressure anti-pull-off positive arched slotted bursting disc device according to claim 1 is characterized in that: The through hole at the axis center of the lower clamp (1) is the clamp inlet (11), and a circular convex sealing surface (12) is arranged on the top surface of the lower clamp (1). The outer diameter of the sealing surface (12) is smaller than the outer diameter of the lower clamp (1), and a plurality of concave lower clamp pin holes (13) are evenly arranged on the top surface of the lower clamp (1) on the same circumference outside the sealing surface (12).
3. The high-pressure anti-pull-off positive arched slotted bursting disc device according to claim 2 is characterized in that: The through hole at the axis center of the upper clamp (3) is the clamp outlet (31).
4. The high-pressure anti-pull-off positive arched slotted bursting disc device according to claim 3 is characterized in that: A plurality of bursting disc slits (23) are evenly distributed in a radial annular pattern on the bursting disc positive dome (22), and each bursting disc slit (23) is arranged in two sections.
5. The high-pressure anti-pull-off positive arched slotted bursting disc device according to claim 4 is characterized in that: The bursting disc edge through hole (24) is larger than the diameter of the lower clamp pin hole (13) and the upper clamp pin hole (32).
6. The high-pressure anti-pull-off positive arched slotted bursting disc device according to claim 5, characterized in that: The pin (4) has a diameter of φ1, a length of l1, and a number of m1; the lower holder pin hole (13) has a diameter of φ2, a depth of h1, and a number of m2, and the diameter of the center circle where the multiple lower holder pin holes (13) are located is d1; the upper holder pin hole (32) has a diameter of φ3, a depth of h2, and a number of m3, and the diameter of the center circle where the multiple upper holder pin holes (32) are located is d2; the bursting disc edge through holes (24) of the bursting disc (2) have a diameter of φ4, a number of m4, and the diameter of the center circle where the bursting disc edge through holes (24) are located is d3, and the following relationship is satisfied: 2mm≤φ1≤16mm, φ2=φ1, φ1+0.5≤φ3≤φ1+6, φ1+0.5≤φ4≤φ1+6, 4mm≤m1≤48mm, and it is an even number, m4=m3=m2=m1, d1=d2=d3, 5mm≤l1≤30mm, 3mm≤h1≤15mm, h2>l1-h1.
7. The high-pressure, pull-off-proof, positive-arch, slotted bursting disc device according to any one of claims 1 to 6, characterized in that: Two inwardly concave screw holes are arranged on the same diameter on the side walls of the lower clamp (1) and the upper clamp (3) and are screwed and fixed with clamp lifting rings (5).