A clamp positioning device for bursting disc

Abstract

The utility model discloses a clamp positioning device for a bursting disc, relates to the technical field of bursting discs, and comprises a lower clamp, a bursting disc, an upper clamp, a positioning ring, and a sealing gasket; the outer circle size of the clamp of the utility model can be designed according to relevant standards or meet use requirements, and there is no need to increase the size of the clamp for installation and positioning considerations, and the size of the clamp can be appropriately reduced to reduce the weight of the clamp, greatly reduce the cost, and improve the installation efficiency of the bursting disc; when the bursting disc is installed, the positioning ring is used to position and install the clamp to avoid the bursting disc from being installed skewed; at the same time, the operability of the installation is improved, and a hoisting hole can also be processed on it or used to mark important parameters. In addition, the positioning ring is simple to process, low in cost, and can be reused.

Description

Technical Field

[0001] The utility model relates to the technical field of bursting discs, in particular to a clamp positioning device for bursting discs. Background Art

[0002] Bursting discs are one of the important safety accessories of pressure vessels. When overpressure occurs in pressure vessels, the bursting discs can quickly burst and release the internal pressure to prevent the pressure in the pressure vessel from continuing to rise and avoid explosion. It is crucial to ensure the performance of the bursting disc. According to user feedback, the vast majority of bursting disc failures are caused by improper installation of the bursting disc. Although the manufacturers of bursting discs will include installation and use instructions for the bursting discs with the goods and provide training for on-site installers, it is difficult to ensure that the bursting discs can be installed reasonably due to the particularity of the construction environment.

[0003] The most important thing is to align the bursting disc. If the bursting disc is installed off-center or not concentric with the flange, the surrounding force of the bursting disc will be uneven, which will eventually lead to the failure of the bursting disc. The previous solution was to increase the size of the clamp or installers to align it with their eyes, but this method greatly increased the cost and was prone to errors, which was difficult for users to accept and caused great waste of raw materials. In the past, in order to facilitate the installation of the user on the flange, the outer circle of the clamp was made the same size as the outer circle of the on-site flange, and the clamp size was directly used for positioning, but this would greatly increase the cost of the clamp. If the clamp is made of special materials, the cost will increase exponentially.

[0004] A bursting disc clamping device with application number CN202321609533.0 is also used to clamp and fix bursting discs, but it is not able to accurately position and install the clamped bursting discs, and there is a problem of incorrect installation position of the bursting discs. Utility Model Content

[0005] The utility model aims to provide a bursting disc clamp positioning device to solve the problem in the above background technology that the bursting disc is installed offset or is not concentric with the flange, which will lead to uneven holding force around the bursting disc and eventually cause the bursting disc to malfunction.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a clamp positioning device for a bursting disc, comprising a lower clamp at a lower part and an upper clamp at an upper part, a bursting disc is arranged between the lower clamp and the upper clamp, a positioning ring is arranged on the outer sides of the lower clamp and the upper clamp, and an annular sealing gasket is arranged at the ends of the lower clamp and the upper clamp that are away from each other; radially arranged screw holes are symmetrically arranged about their axis on the outer side walls of the ends of the lower clamp and the upper clamp that are close to each other; the positioning ring is arranged in a circular ring shape, and downwardly bent connecting pieces are symmetrically arranged about their center on the outer circle of the positioning ring, and two connecting holes arranged side by side up and down are arranged on each connecting piece, and a screw is penetrated in each connecting hole, and the two screws on the same connecting piece are respectively connected and fixed to the screw holes on the lower clamp and the upper clamp.

[0007] Preferably, the lower clamp and the upper clamp have the same structure, both comprising a clamping main pipe arranged in an annular shape, and radially arranged screw holes are symmetrically arranged about their axes on the outer side walls of the two clamping main pipes at one end close to each other.

[0008] Preferably, the bursting disc is placed between two clamping main pipes and is coaxially arranged.

[0009] Preferably, the positioning ring is arranged in a circular ring shape, the hollow inner circle of which can be sleeved on the outer sides of the lower clamp and the upper clamp, and the outer circle of the positioning ring is symmetrically provided with downwardly bent connecting plates with its center, and each connecting plate is provided with two connecting holes arranged side by side up and down, and a screw is penetrated in each connecting hole, and the two screws on the same connecting plate are respectively connected and fixed to the screw holes on the two clamping main pipes.

[0010] Preferably, the bursting disc can be a positive dome-shaped bursting disc, a flat-plate-shaped bursting disc, or a reverse dome-shaped bursting disc in the prior art.

[0011] Preferably, the outer circle of the positioning ring can be processed into a positioning circular ring, and the outer diameter of the positioning circular ring is smaller than the diameter of the inner circle formed by the flange bolts of the equipment.

[0012] Preferably, a plurality of inwardly concave semicircular positioning countersunk holes are evenly distributed in an annular shape at the edge of the positioning ring.

[0013] Preferably, a plurality of circular positioning holes are evenly distributed on the same circumference of the positioning ring, and the size and number of the circular positioning holes are consistent with the number and size of the bolt holes of the matching flange.

[0014] Preferably, the wall thickness of the clamping main pipe is 40 mm to 200 mm.

[0015] Preferably, the thickness of the positioning ring is 5 mm to 20 mm.

[0016] Compared with the prior art, the beneficial effects of the utility model are:

[0017] The outer circle size of the clamp of the utility model can be designed according to relevant standards or to meet the use requirements. There is no need to increase the size of the clamp for installation and positioning considerations, and the size of the clamp can be appropriately reduced to reduce the weight of the clamp, greatly reduce the cost, and improve the installation efficiency of the bursting disc. When the bursting disc is installed, the positioning ring is used to position and install the clamp to avoid the bursting disc from being installed skewed. At the same time, the operability of the installation is improved, and a lifting hole can be processed on it or used to mark important parameters. In addition, the positioning ring is simple to process, low in cost, and can be reused. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the installation of the utility model and the on-site equipment;

[0019] Figure 2 This is a top view of the assembly of the utility model;

[0020] Figure 3 for Figure 2 Main view;

[0021] Figure 4 This is the main view of the positioning ring;

[0022] Figure 5 for Figure 4 Top view;

[0023] Figure 6 for Figure 5 Schematic diagram of opening positioning countersink;

[0024] Figure 7 for Figure 5 Schematic diagram of opening a positioning circular hole;

[0025] In the figure: lower clamp -1, clamping main pipe -11, screw hole -12, bursting disc -2, upper clamp -3, positioning ring -4, connecting piece -41, connecting hole -42, screw -43, positioning ring -44, positioning countersunk hole -45, positioning circular hole -46, sealing gasket -5. DETAILED DESCRIPTION

[0026] 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.

[0027] Please refer to Figure 1-7 , Figure 1 It is a schematic diagram of the installation of the utility model and the on-site equipment; Figure 2 This is a top view of the assembly of the utility model; Figure 3 for Figure 2 Main view; Figure 4 This is the main view of the positioning ring; Figure 5 for Figure 4 Top view; Figure 6 for Figure 5 Schematic diagram of opening positioning countersink; Figure 7 for Figure 5 Schematic diagram of opening positioning circular holes.

[0028] The utility model provides a bursting disc clamp positioning device, which is used to ensure the positioning, installation and use of the bursting disc; it comprises a lower clamp 1 at a lower part and an upper clamp 3 at an upper part, wherein a bursting disc 2 is arranged between the lower clamp 1 and the upper clamp 3, and the bursting disc 2 is used as a main pressure control element to prevent the pressure of the equipment from being too large, and the lower clamp 1 and the upper clamp 3 play a role of clamping and protecting the bursting disc 2; a positioning ring 4 is arranged on the outer side of the lower clamp 1 and the upper clamp 3, which is used to play a role of installation pre-tightening, positioning and anti-deviation for the lower clamp 1 and the upper clamp 3 on which the bursting disc 2 is installed; an annular sealing gasket 5 is arranged at one end of the lower clamp 1 and the upper clamp 3 away from each other, which is used to be sealed and connected with the equipment for use.

[0029] The lower clamp 1 and the upper clamp 3 have the same structure, both comprising a circularly arranged clamping main pipe 11, and radially arranged screw holes 12 are symmetrically arranged about their axes on the outer side walls of the ends of the two clamping main pipes 11 close to each other; due to the special structure of the two clamping main pipes 11, the wall thickness thereof is 40 mm to 200 mm.

[0030] The bursting disc 2 can be a positive arch bursting disc, a flat bursting disc, or a reverse arch bursting disc in the prior art; the bursting disc 2 is used as the main pressure control element, and the bursting disc 2 will explode when the designed bursting pressure is reached; the bursting disc 2 is placed between two clamping main pipes 11 and is clamped and fixed by the pipe wall end faces of the two clamping main pipes 11, and the clamped and fixed bursting disc 2 is coaxially arranged with the two clamping main pipes 11; the lower clamp 1 and the upper clamp 3 have the functions of positioning, supporting, sealing and ensuring the discharge area, and can ensure the performance of the bursting disc 2; the bursting disc 2 is assisted in positioning and fixing by a positioning ring 4 arranged on the outside.

[0031] The positioning ring 4 is arranged in a circular shape to position and connect the upper and lower clamps, which can not only realize the positioning of the interior and the two clamps, but also realize the positioning of the exterior and the equipment flange; the hollow inner circle can be sleeved on the outer sides of the lower clamp 1 and the upper clamp 3, and the outer circle of the positioning ring 4 is symmetrically provided with downwardly bent connecting pieces 41 at its center, and each connecting piece 41 is provided with two connecting holes 42 arranged side by side up and down, and a screw 43 is penetrated in each connecting hole 42, and the two screws 43 on the same connecting piece 41 are respectively connected and fixed to the screw holes 12 on the two clamping main pipes 11, so that the lower clamp 1 and the upper clamp 3 are connected into one by the two connecting pieces 41 and the screws 43.

[0032] The positioning structure of the positioning ring 4 can also be processed into various types. The outer circle of the positioning ring 4 can be processed into a positioning ring 44, and the outer diameter of the positioning ring 44 is smaller than the diameter of the inner circle formed by the flange bolts of the equipment, so that the positioning ring 44 will not hinder the flange bolts that match it from passing through, and plays a certain positioning function.

[0033] Alternatively, a plurality of concave semicircular positioning countersunk holes 45 may be evenly distributed in an annular manner at the edge of the outer circle of the positioning ring 4, and the number and size of the positioning countersunk holes 45 may not be consistent with the number and size of the flange bolt holes that match it. When installing the bursting disc 2, only 3 to 6 bolts are required to pass through the positioning countersunk holes 45 to achieve positioning. This structure is conducive to the rapid replacement of the bursting disc 2 on site.

[0034] Alternatively, a plurality of positioning circular holes 46 may be evenly distributed on the same circumference of the positioning ring 4, and the size and number of the positioning circular holes 46 are consistent with the number and size of the flange bolt holes that match them. When installing the bursting disc 2, the positioning ring 4 can be positioned by only passing the flange bolts through the positioning circular holes 46. At the same time, when the mass of the clamp is large, the hoisting operation can also be achieved through the positioning circular holes 46.

[0035] The positioning ring 4 can also be processed according to the structure required by the user, such as being processed into an irregular shape, or having a mark on it.

[0036] The thickness of the positioning ring 4 does not exceed 20 mm. If the positioning ring 4 is used for hoisting, the thickness of the positioning ring 4 is 5 mm to 20 mm. If the positioning ring 4 is not needed for hoisting but only for positioning, the thickness of the positioning ring 4 does not exceed 5 mm.

[0037] When in use, the bursting disc 2 is placed between the lower clamp 1 and the upper clamp 3, and then the positioning ring 4 is sleeved on the outer side of the lower clamp 1 or the upper clamp 3, and then the two connecting pieces 41 of the positioning ring 4 are connected to the two clamps as a whole by using screws 12, and the lower clamp 1, the bursting disc 2, the upper clamp 3, and the positioning ring 4 connected as a whole are placed between the two connecting flanges of the equipment, and are clamped and fixed by the two connecting flanges, and then the two connecting flanges are connected as a whole by using flange bolts, and then the connection is made into one. The lower clamp 1, the bursting disc 2, the upper clamp 3 and the positioning ring 4 are clamped and fixed, and the clamping force is transmitted to the lower clamp 1 and the upper clamp 3, and finally act together on the edge of the bursting disc 2, so that the edge of the bursting disc 2 is constrained to ensure its performance; if the positioning ring 4 used is provided with a positioning countersink 45, the positioning countersink 45 can be aligned with the flange bolt during the clamping process; if the positioning ring 4 used is provided with a positioning circular hole 46, the positioning circular hole 46 can be aligned with the flange bolt during the clamping process.

[0038] The outer circle size of the clamp of the utility model can be designed according to relevant standards or to meet the use requirements. There is no need to increase the size of the clamp for installation and positioning considerations, and the size of the clamp can be appropriately reduced to reduce the weight of the clamp, greatly reduce the cost, and improve the installation efficiency of the bursting disc. When the bursting disc is installed, the positioning ring is used to position and install the clamp to avoid the bursting disc from being installed skewed. At the same time, the operability of the installation is improved, and a lifting hole can be processed on it or used to mark important parameters. In addition, the positioning ring is simple to process, low in cost, and can be reused.

[0039] 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 bursting disc clamp positioning device, characterized in that: The invention comprises a lower clamp (1) at the bottom and an upper clamp (3) at the top, a bursting disc (2) is arranged between the lower clamp (1) and the upper clamp (3), a positioning ring (4) is arranged on the outer sides of the lower clamp (1) and the upper clamp (3), and a circular sealing gasket (5) is arranged at the ends of the lower clamp (1) and the upper clamp (3) that are away from each other; and radially spaced gaskets (5) are arranged on the outer side walls of the ends of the lower clamp (1) and the upper clamp (3) that are close to each other, symmetrically with respect to their axis. The positioning ring (4) is arranged in a circular ring shape, and a downwardly bent connecting piece (41) is symmetrically arranged at the center of the outer circle of the positioning ring (4), and two connecting holes (42) arranged side by side in an upper and lower direction are arranged on each connecting piece (41), and a screw (43) is penetrated in each connecting hole (42), and the two screws (43) on the same connecting piece (41) are respectively connected and fixed to the screw holes (12) on the lower clamp (1) and the upper clamp (3).

2. The bursting disc clamp positioning device according to claim 1, characterized in that: The lower clamp (1) and the upper clamp (3) have the same structure, both comprising a clamping main pipe (11) arranged in an annular shape, and radially arranged screw holes (12) are symmetrically arranged about their axes on the outer side walls of the two clamping main pipes (11) at one end close to each other.

3. The bursting disc clamp positioning device according to claim 2, characterized in that: The bursting disc (2) is placed between two clamping main pipes (11) and is coaxially arranged.

4. The bursting disc clamp positioning device according to claim 3, characterized in that: The hollow inner circle of the positioning ring (4) can be sleeved on the outer sides of the lower clamp (1) and the upper clamp (3), and two screws (43) on the same connecting piece (41) are respectively connected and fixed to the screw holes (12) on the two clamping main pipes (11).

5. The bursting disc clamp positioning device according to claim 4, characterized in that: The bursting disc (2) may be a positive dome-shaped bursting disc, a flat-plate-shaped bursting disc, or a reverse dome-shaped bursting disc in the prior art.

6. The bursting disc holder positioning device according to claim 5, characterized in that: The outer circle of the positioning ring (4) can be processed into a positioning circular ring (44), and the outer diameter of the positioning circular ring (44) is smaller than the diameter of the inner circle formed by the flange bolts of the equipment.

7. The bursting disc clamp positioning device according to claim 5, characterized in that: A plurality of inwardly concave semicircular positioning countersunk holes (45) are evenly distributed in an annular pattern at the edge of the positioning ring (4).

8. The bursting disc holder positioning device according to claim 7, characterized in that: A plurality of circular positioning holes (46) are evenly distributed on the same circumference of the positioning ring (4), and the size and number of the circular positioning holes (46) are consistent with the number and size of the flange bolt holes that match them.

9. The bursting disc clamp positioning device according to any one of claims 6 to 8, characterized in that: The wall thickness of the clamping main pipe (11) is 40 mm to 200 mm.

10. The bursting disc clamp positioning device according to claim 9, characterized in that: The thickness of the positioning ring (4) is 5 mm to 20 mm.

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