Belt rail rupture disc and method of rupture

Abstract

The present application belongs to the field of bursting disc, and particularly relates to a track-equipped bursting disc and a bursting method, wherein the track-equipped bursting disc comprises a partitioned bursting disc, a sliding block and a connecting rod; the partitioned bursting disc comprises a plurality of support structures and a diaphragm arranged on each support structure; the sliding block is arranged in the wall of a pressure relief pipe and is used for sliding along the direction of high-pressure fluid flow; one connecting rod is arranged on each diaphragm in abutment or fixedly, and the other end of all the connecting rods is fixedly connected with the sliding block. That is, the track-equipped bursting disc is proposed, the bursting disc is designed as a partitioned multi-diaphragm form, and the synchronous rupture of the multi-diaphragm is used to replace the traditional tearing process.

Description

A rail-mounted rupture disc and blasting method Technical Field

[0001] This invention belongs to the field of rupture discs, specifically relating to a rail-mounted rupture disc and a rupture method. Background Technology

[0002] Rupture discs are characterized by high pressure bearing capacity and rapid opening under ultimate loads, and are widely used in many fields such as aerospace engineering and pressure vessels. Currently available rupture discs can be classified into three types based on their structural form: flat plate, positive arch, and negative arch. Furthermore, to achieve stable control of the burst pressure, gaps or grooves are usually pre-fabricated in the rupture disc to guide its rupture.

[0003] However, for ultra-large diameter rupture discs, such as those with a diameter of 200 mm or more (usually less than 40 mm), there are challenges in achieving rapid rupture, complete rupture, and no fragmentation, which current designs cannot effectively address. For example, (1) when the diameter of the rupture disc is large, the time required for tearing and rupture from local cracking to overall opening increases, which does not meet the characteristic requirement of rapid release of the rupture disc; (2) when the rupture process is slow, high-pressure gas / liquid may be released only through local rupture, without forming a large-diameter rapid release, which does not conform to the design purpose of large-diameter rupture discs; (3) in addition, when the size of the rupture disc is large, it is easier to form small fragments that fly away than small-sized rupture discs, which may cause serious safety problems and does not meet the application requirements of rupture discs. Summary of the Invention

[0004] The technical problem to be solved by the present invention is to provide a track-mounted rupture disc and a rupture method for a multi-partitioned diaphragm that can complete the rupture of all partitioned diaphragms in a short time.

[0005] This invention provides a rail-mounted rupture disc, comprising a partitioned rupture disc, a slider, and a connecting rod;

[0006] The partitioned rupture disc includes several support structures and a diaphragm disposed on each support structure;

[0007] The slider is slidably disposed inside the pressure relief pipe wall along the direction of high-pressure fluid flow.

[0008] Each of the diaphragms is abutted or fixedly provided with a connecting rod, and the other end of all the connecting rods is fixedly connected to the slider.

[0009] Furthermore, the slider is positioned upstream of the diaphragm in the direction of high-pressure fluid flow;

[0010] The slider is provided with a flow structure, through which high-pressure fluid passes through the slider and acts on several diaphragms.

[0011] Furthermore, the sidewall of the slider slides linearly with the wall of the pressure relief pipe;

[0012] The middle of the slider has a hollowed-out skeleton structure, and the hollowed-out structure forms the flow structure.

[0013] Furthermore, at least a portion of the flow structure is configured to correspond to the membrane.

[0014] Furthermore, the slider is positioned downstream of the diaphragm in the direction of high-pressure fluid flow;

[0015] The connecting rod is fixedly connected to the diaphragm.

[0016] Furthermore, when the connecting rod is fixedly connected to the diaphragm, the connecting rod and the diaphragm are connected by bolt fasteners.

[0017] Furthermore, the connecting rod abuts against or is fixed to the central region of the diaphragm.

[0018] Furthermore, the diaphragm can be positively arched, flat, or negatively arched.

[0019] Furthermore, the support structure includes an enclosing hole, and the outer side of the diaphragm is fixedly disposed on the sidewall of the enclosing hole.

[0020] The present invention also provides a method for blasting with a rail-mounted rupture disc, using the above-mentioned rail-mounted rupture disc, comprising the following steps:

[0021] When the pressure inside the pressure relief pipe reaches the set upper limit, one or more diaphragms will first deform or rupture in the downstream direction of the high-pressure fluid. During the deformation or rupture process, the connecting rod will move. The one or more connecting rods will drive the slider and the other connecting rods to move synchronously, so that all diaphragms will deform or rupture, and all diaphragms will rupture within the set time period.

[0022] After one or more diaphragms rupture, the high-pressure fluid pushes the slider downstream, and all connecting rods move synchronously, causing all diaphragms to deform further and promote their rupture, so that all diaphragms rupture within a set time period.

[0023] The beneficial effects of this invention are that the partitioned rupture disc is composed of multiple diaphragms, and the slider and multiple connecting rods form a rigid whole. When one connecting rod moves, it inevitably drives the other connecting rods to move. That is, when one or more diaphragms deform first, the force of this initial deformation will be transmitted to the other diaphragms, promoting their synchronous deformation. Simultaneously, when one or more diaphragms rupture, the instantaneous flow of high-pressure fluid will drive the slider to continue moving downstream, causing further deformation of the other diaphragms, which is conducive to their rupture, ultimately achieving the complete rupture of all diaphragms in a very short time.

[0024] The present invention proposes a track-mounted rupture disc, which is designed as a multi-diaphragm plate with multiple sections; the synchronous rupture of the multiple diaphragms replaces the traditional tearing process. Attached Figure Description

[0025] Figure 1 is a schematic diagram of the structure of the present invention when the slider is located in the upstream direction of the partition rupture disc in the high-pressure fluid and the diaphragm is in a positive arch shape;

[0026] Figure 2 is a schematic diagram of the structure of the present invention when the slider is located in the upstream direction of the partitioned rupture disc in the high-pressure fluid and the diaphragm is flat.

[0027] Figure 3 is a schematic diagram of the structure of the present invention when the slider is located in the direction upstream of the partitioned rupture disc in the high-pressure fluid and the diaphragm is in the inverted arch shape;

[0028] Figure 4 is a schematic diagram of the structure of the present invention when the slider is located downstream of the partitioned rupture disc in the direction of high pressure fluid and the diaphragm is in a positive arch shape;

[0029] Figure 5 is a schematic diagram of the structure of the present invention when the slider is located downstream of the partitioned rupture disc in the direction of high pressure fluid and the diaphragm is flat.

[0030] Figure 6 is a schematic diagram of the structure of the present invention when the slider is located downstream of the partition rupture disc in the direction of high pressure fluid and the diaphragm is in the inverted arch shape.

[0031] In the diagram, 1-partition rupture disc; 11-support structure; 12-diaphragm; 2-slider; 3-connecting rod; 4-pressure relief pipe wall; 5-high pressure fluid. Detailed Implementation

[0032] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present invention.

[0033] It should be noted that all directional indications (such as up, down, left, right, front, back, etc.) in the embodiments of the present invention are only used to explain the relative positional relationship and movement of each component in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indication will also change accordingly.

[0034] Furthermore, in this invention, descriptions involving "first," "second," etc., are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this invention, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0035] In this invention, unless otherwise explicitly specified and limited, the terms "connection," "fixed," etc., should be interpreted broadly. For example, "fixed" can mean a fixed connection, a detachable connection, or an integral part; it can mean a mechanical connection, an electrical connection, a physical connection, or a wireless communication connection; it can mean a direct connection or an indirect connection through an intermediate medium; it can mean the internal communication of two elements or the interaction between two elements, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0036] Furthermore, the technical solutions of the various embodiments of the present invention can be combined with each other, but only if they are feasible for those skilled in the art. If the combination of technical solutions is contradictory or cannot be implemented, it should be considered that such combination of technical solutions does not exist and is not within the scope of protection claimed by the present invention.

[0037] As shown in Figures 1-6, the present invention provides a rail-mounted rupture disc, comprising a partitioned rupture disc 1, a slider 2, and a connecting rod 3;

[0038] The partitioned rupture disc 1 includes several support structures 11 and diaphragms 12 disposed on each support structure 11; and multiple diaphragms 12 are located on the same plane to form a large-sized integral rupture disc, that is, multiple small-sized diaphragms 12 can be combined to form an ultra-large diameter rupture disc, such as a rupture disc with a diameter of more than 200 mm (usually less than 40 mm), to meet the installation requirements of the pressure relief pipe wall 4 with large diameter and high flow rate; of course, the size of the diaphragm 12 can also be micro-sized, and multiple micro-sized diaphragms 12 combined to form a small-diameter rupture disc (e.g., less than 40 mm), in which case the micro-sized diaphragms 12 can be fully utilized.

[0039] The slider 2 is slidably disposed inside the pressure relief pipe wall 4 along the flow direction of the high-pressure fluid 5, that is, the slider 2 and the pressure relief pipe wall 4 form a guide rail slider structure; of course, a guide rail that slides and engages with the slider 2 can also be provided on the pressure relief pipe wall 4.

[0040] Each of the diaphragms 12 is abutted or fixedly provided with a connecting rod 3, and the other end of all the connecting rods 3 is fixedly connected to the slider 2.

[0041] When the pressure inside the pressure relief pipe wall 4 reaches the set upper limit, one or more diaphragms 12 will first deform or rupture in the downstream direction of the high-pressure fluid 5. During the deformation or rupture process, the connecting rod 3 will move. The one or more connecting rods 3 will drive the slider 2 and the other connecting rods 3 to move synchronously, so that all diaphragms 12 will deform or rupture, and all diaphragms 12 will rupture within the set time period.

[0042] After one or more diaphragms 12 rupture, the high-pressure fluid 5 will push the slider 2 to move downstream, and all connecting rods 3 will move synchronously, causing all diaphragms 12 to be further deformed, promoting their rupture, so that all diaphragms 12 can complete the rupture within a set time period.

[0043] The rail-mounted rupture disc provided by this invention, based on the traditional rupture disc design, is mainly designed for the rapid release of large-diameter, high-volume, high-pressure gas / liquid, such as in scenarios like pneumatic ejection of ultra-high-tonnage projectiles and ultra-rapid purging of liquids from water tanks.

[0044] Theoretically, as long as all diaphragms 12 have the same critical deformation limit (i.e., the same failure strength), all diaphragms 12 will fail synchronously, enabling rapid rupture of a large-diameter rupture disc. However, in reality, the diaphragms 12 in each zone always have certain differences due to processing precision and material uniformity. Under the same deformation conditions, the order of rupture may vary. When one diaphragm 12 ruptures, the instantaneous pressure drop mainly affects the corresponding area of ​​that diaphragm 12 and does not directly affect the pressure state of other diaphragms 12, leading to the phenomenon of only localized rupture of diaphragms 12. In this case, the high-pressure fluid 5 is released only through the locally ruptured diaphragms 12, without forming a large-diameter rapid release, which is inconsistent with the design purpose of a large-diameter rupture disc. This invention solves the above problems well by designing a slider 2 and connecting rods 3. Specifically, the zoned rupture disc 1 is composed of multiple diaphragms 12, and the slider 2 and multiple connecting rods 3 form a rigid whole. When one connecting rod 3 moves, it will inevitably drive the other connecting rods 3 to move. In other words, when one or more diaphragms 12 deform first, the force of this initial deformation will be transmitted to the other diaphragms 12, promoting their synchronous deformation. Simultaneously, when one or more diaphragms 12 rupture, the instantaneous flow of the high-pressure fluid 5 will drive the slider 2 to continue moving downstream, causing further deformation of the other diaphragms 12, which is conducive to their rupture, ultimately achieving the rupture of all diaphragms 12 in a very short time.

[0045] The present invention proposes a track-mounted rupture disc, which is designed as a multi-diaphragm 12 in a partitioned manner; the synchronous rupture of the multi-diaphragm 12 replaces the traditional tearing process.

[0046] Referring to Figures 1-3, in one embodiment, the slider 2 is positioned upstream of the diaphragm 12 in the flow direction of the high-pressure fluid 5, that is, the slider 2 and the connecting rod 3 are positioned inside the pressure relief pipe wall 4, and the slider 2 and the connecting rod 3 are always immersed in the high-pressure fluid 5 before the pressure relief pipe wall 4 is depressurized.

[0047] At this time, since the slider 2 needs to fix the connecting rod 3, the main structure of the slider 2 is arranged on the cross-sectional area of ​​the pressure relief pipe wall 4. At this time, the main structure of the slider 2 is provided with a flow structure so that the high pressure fluid 5 can act on several diaphragms 12. The high pressure fluid 5 passes through the flow structure and acts on several diaphragms 12.

[0048] In this embodiment, after one or more diaphragms 12 rupture, the high-pressure fluid 5 will flow out through the ruptured diaphragm 12. The flowing high-pressure fluid 5 will drive the slider 2 to continue to move downstream, causing the deformation of other diaphragms 12 to increase further, which is conducive to the rupture of other diaphragms 12, and finally achieving the rupture of all diaphragms 12 in a very short time.

[0049] In this embodiment, the connecting rod 3 and the diaphragm 12 are either abutting or fixedly connected, preferably fixedly connected. In this case, the connecting rod 3 can also be used to retain fragments of the ruptured diaphragm 12 within the pressure relief pipe wall 4, reducing the area of ​​the torn fragments (because part of the area is fixedly connected), effectively preventing some areas of the diaphragm 12 from detaching / splashing. Specifically, according to traditional rupture disc rupture test data, a ruptured disc often forms multiple fragments after rupture. Under the action of high-pressure fluid 5, these fragments may detach and splash, posing a significant safety threat. This invention connects the diaphragm 12 to the slider 2 via the connecting rod 3, reducing the area of ​​the torn fragments and effectively preventing some areas of the diaphragm 12 from detaching / splashing. When the connecting rod 3 is connected to the central area of ​​the diaphragm 12, this invention connects the central area of ​​the diaphragm 12 to the slider 2, reducing the area of ​​the torn fragments (because the central area is fixedly connected) and effectively preventing the most easily splashed central area from detaching / splashing.

[0050] In addition, since the slider 2 is positioned upstream of the diaphragm 12 in the flow direction of the high-pressure fluid 5, after all the diaphragms 12 have ruptured, the support structure 11 can prevent the slider 2, the connecting rod 3, and the fragments of the diaphragm 12 on the connecting rod 3 from detaching from the pressure relief pipe wall 4, thereby improving the safety of the rail-mounted rupture disc.

[0051] In this embodiment, the side wall of the slider 2 slides linearly with the pressure relief pipe wall 4, which simplifies the installation process, eliminates the need for excessive modifications to the pressure relief pipe wall 4 (no guide rail required), and reduces the cost of use.

[0052] The middle of the slider 2 is a hollow skeleton structure, and the hollow structure forms the flow structure. This ensures that the slider 2 has a simple structure, is easy to manufacture and process, and also ensures the flow area of ​​the flow structure.

[0053] In this embodiment, at least some of the flow structures are arranged corresponding to the diaphragm 12, that is, some flow structures are staggered with the support structure 11. This arrangement can prevent the support structure 11 from blocking all the flow structures after all the diaphragms 12 rupture, thereby preventing blockage of the pressure relief pipe wall 4. Preferably, all the flow structures correspond one-to-one with the positions of the diaphragms 12, which increases the flow area while ensuring the structural strength of the slider 2.

[0054] Referring to Figures 4-6, in one embodiment, the slider 2 is positioned downstream of the diaphragm 12 in the flow direction of the high-pressure fluid 5, that is, the slider 2 and the connecting rod 3 are positioned outside the pressure relief pipe wall 4, and the slider 2 and the connecting rod 3 do not contact the high-pressure fluid 5 before the pressure relief pipe wall 4 is depressurized.

[0055] At this time, the connecting rod 3 is fixedly connected to the diaphragm 12. After one or more diaphragms 12 rupture, the high-pressure fluid 5 flows out through the ruptured diaphragm 12 and impacts the slider 2. The outflowing high-pressure fluid 5 will drive the slider 2 to continue moving downstream, causing the deformation of other diaphragms 12 to increase further, which is conducive to the rupture of other diaphragms 12, and finally achieves the rupture of all diaphragms 12 in a very short time.

[0056] In this embodiment, a flow structure can be provided on the slider 2. In this case, a limiting structure can be provided inside the pressure relief pipe wall 4 to restrict the slider 2 and the connecting rod 3 from being pushed away from the pressure relief pipe wall 4. Of course, the slider 2 may not have a flow structure. When no flow structure is provided, the slider 2 and the connecting rod 3 can eventually be pushed away from the pressure relief pipe wall 4 by the high-pressure fluid 5 to ensure the normal flow of the pressure relief pipe wall 4 and to ensure that the slider 2 does not significantly affect the flow of the high-pressure fluid 5, that is, it does not affect the rapid release process of the high-pressure fluid 5.

[0057] In one embodiment, when the connecting rod 3 is fixedly connected to the diaphragm 12, the connecting rod 3 and the diaphragm 12 are connected by bolt fasteners. In this embodiment, the connection between the connecting rod 3 and the diaphragm 12 is a mechanical threaded connection, without welding, which avoids the problem of the diaphragm 12 breaking and reducing its precision due to welding. Preferably, a small hole can be pre-drilled in the central area of ​​the diaphragm 12, and a threaded hole can be provided at the end of the connecting rod 3. The connection between the diaphragm 12 and the connecting rod 3 is achieved by bolting through the small hole and into the threaded hole.

[0058] In one preferred embodiment, the connecting rod 3 abuts against or is fixed to the central region of the diaphragm 12. This arrangement ensures that the central region of the diaphragm 12 is the first area to deform or rupture, thus guaranteeing the deformation effect of the diaphragm 12.

[0059] In one embodiment, the diaphragm 12 is a positive arch, a flat plate, or an inverted arch. That is, the rail-mounted rupture disc of the present invention can adapt to various types of diaphragms 12, exhibiting strong adaptability. Regardless of whether the rupture disc is positively arched, flat, or inverted arched, it can be modified for larger diameter applications using the present invention. The specific structure of the diaphragm 12 can be selected according to actual needs.

[0060] In one embodiment, the support structure 11 includes an enclosing hole, and the outer side of the diaphragm 12 is fixedly disposed on the sidewall of the enclosing hole. This arrangement ensures the sealing performance of the diaphragm 12. The enclosing hole can be a circular hole or a regular polygonal hole. When it is a regular polygonal hole, all the support structures 11 can be enclosed to form a honeycomb structure.

[0061] The present invention also provides a method for blasting with a rail-mounted rupture disc, using the above-mentioned rail-mounted rupture disc, comprising the following steps:

[0062] When the pressure inside the pressure relief pipe wall 4 reaches the set upper limit, one or more diaphragms 12 will first deform or rupture in the downstream direction of the high-pressure fluid 5. During the deformation or rupture process, the connecting rod 3 will move. The one or more connecting rods 3 will drive the slider 2 and the other connecting rods 3 to move synchronously, so that all diaphragms 12 will deform or rupture, and all diaphragms 12 will rupture within the set time period.

[0063] After one or more diaphragms 12 rupture, the high-pressure fluid 5 will push the slider 2 to move downstream, and all connecting rods 3 will move synchronously, causing all diaphragms 12 to be further deformed, promoting their rupture, so that all diaphragms 12 can complete the rupture within a set time period.

[0064] The above description is merely an embodiment and does not constitute any limitation on the present invention. Any person skilled in the art can make many possible variations, modifications, or alterations to the technical solutions of the present invention without departing from the scope of the present invention. Therefore, any simple modifications, equivalent changes, and alterations made to the above embodiments based on the technical essence of the present invention, without departing from the scope of the present invention, should fall within the protection scope of the present invention.

Claims

1. A rail-mounted rupture disc, characterized in that, It includes a partitioned rupture disc (1), a slider (2), and a connecting rod (3); the partitioned rupture disc (1) includes several support structures (11) and a diaphragm (12) provided on each support structure (11); the slider (2) is used to slide in the pressure relief pipe wall (4) along the flow direction of the high-pressure fluid (5); each diaphragm (12) is abutted or fixedly provided with a connecting rod (3), and the other end of all the connecting rods (3) is fixedly connected to the slider (2).

2. The rail-mounted rupture disc as described in claim 1, characterized in that, The slider (2) is positioned upstream of the diaphragm (12) in the flow direction of the high-pressure fluid (5); the slider (2) is provided with a flow structure, through which the high-pressure fluid (5) passes through the slider (2) and acts on several diaphragms (12).

3. The rail-mounted rupture disc as described in claim 2, characterized in that, The side wall of the slider (2) slides linearly with the pressure relief pipe wall (4); the middle of the slider (2) is a hollow skeleton structure, and the hollow structure forms the flow structure.

4. The rail-mounted rupture disc as described in claim 3, characterized in that, At least a portion of the flow structure is configured to correspond to the membrane (12).

5. The rail-mounted rupture disc as described in claim 1, characterized in that, The slider (2) is positioned downstream of the diaphragm (12) in the flow direction of the high-pressure fluid (5); the connecting rod (3) is fixedly connected to the diaphragm (12).

6. The rail-mounted rupture disc as described in claim 1, characterized in that, When the connecting rod (3) is fixedly connected to the diaphragm (12), the connecting rod (3) and the diaphragm (12) are connected by bolt fasteners.

7. The rail-mounted rupture disc as described in claim 1, characterized in that, The connecting rod (3) abuts against or is fixed in the central area of ​​the diaphragm (12).

8. The rail-mounted rupture disc as described in any one of claims 1-7, characterized in that, The diaphragm (12) is of the positive arch type, flat plate type or reverse arch type.

9. The rail-mounted rupture disc as described in any one of claims 1-7, characterized in that, The support structure (11) includes an enclosing hole, and the outer side of the diaphragm (12) is fixedly disposed on the side wall of the enclosing hole.

10. A method for blasting with a rail-mounted rupture disc, characterized in that, Using the rail-mounted rupture disc as described in any one of claims 1-9, the following steps are included: when the pressure inside the pressure relief pipe wall (4) reaches a set upper limit, one or more diaphragms (12) will first deform or rupture in the downstream direction of the high-pressure fluid (5). During the deformation or rupture process, the connecting rod (3) will move. The connecting rod (3) will drive the slider (2) and the other connecting rods (3) to move synchronously, so that all diaphragms (12) will deform or rupture, and all diaphragms (12) will rupture within a set time period. After one or more diaphragms (12) rupture, the high-pressure fluid (5) will push the slider (2) to move downstream, and all connecting rods (3) will move synchronously, so that all diaphragms (12) will further deform and promote their rupture, and all diaphragms (12) will rupture within a set time period.

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