KR100563322B1 - Rupture disc assembly - Google Patents

Abstract

The present invention relates to a rupture disk assembly. The present invention is exposed to the pressure of the inner side of the fluid storage container and the support disk, which is a disc of a metal material in which a plurality of pressure holes are perforated, and a through-hole is formed in the center to be exposed to the outer side of the fluid storage container and cut by the incision line A top disc, which is a disc of a metal material on which a piece is formed, a seal positioned between the support disc and the top disc to prevent fluid leakage, and provided between the seal and the support disc, and divided into a plurality of segments by an incision line. Lip blades are formed and plastically deformed by the pressure of the fluid to maintain the flow path, and a metal plate relatively thinner than the top disk is installed in the through hole of the top disk, the pressure of the fluid storage container is more than a certain It is configured to include a setting disk to rupture. According to the rupture disk assembly according to the present invention having such a configuration, it is possible to completely block the leakage of the fluid in the fluid storage container, it is effectively used in the fluid storage container is formed a relatively low pressure, once burst by overpressure When the flow path for the discharge of the fluid is smoothly achieved there is an advantage that can minimize the damage to the fluid storage container.

Ruptured disc, under pressure, bursting, storage container

Description

Rupture disc assembly

1 is a perspective view showing the configuration of a preferred embodiment of the rupture disk assembly according to the present invention.

Figure 2 is an exploded perspective view showing the configuration of an embodiment of the present invention.

3 is a plan view showing a support disk constituting an embodiment of the present invention.

Figure 4 is a plan view showing a lip blade constituting an embodiment of the present invention.

5 is a plan view showing a top disk constituting an embodiment of the present invention.

6 is a plan view showing a setting disk constituting an embodiment of the present invention.

Explanation of symbols on the main parts of the drawings

10: support disk 12: pressure ball

14: Fastener 20: Ripblade

22: incision 24: dividing blade

30: seal 32: protective pad

33: incision 35: incision

40: top disc 42: through hole

44: radial incision 46: circumferential incision

48: fastener 50: setting disc

52: incision 60: gasket

62: fastener

The present invention relates to a rupture disk assembly, and more particularly, to a rupture disk assembly installed in a chemical reactor or a fluid storage tank and ruptured at a predetermined pressure value to protect the chemical reactor or the fluid storage tank.

In chemical reactors or fluid storage tanks, it is desirable to prevent chemicals from leaking inside. However, in order to solve the problem that the pressure inside the chemical reactor or the fluid storage tank becomes too large and the entire chemical reactor or the fluid storage tank is damaged, a vent cover or the like is used to lower the pressure in the chemical reactor or the fluid storage tank little by little.

However, the vent cover may adjust the pressure inside the chemical reactor or the fluid storage tank, but in the process, the internal fluid leaks to the outside little by little. In recent years, environmental pollution has become more severe worldwide, and regulations on it have been tightened. For example, there has been increased emission control of substances that generate photochemical oxidants that cause photochemical smog (commonly called VOCs). Therefore, when the vent cover or the like is used, there is a problem that the leakage of the VOC material occurs due to incomplete sealing, thereby causing the environmental pollution problem as described above.

On the other hand, when the pressure inside the chemical reactor or the fluid storage tank becomes excessively large and the fluid inside is rapidly discharged to prevent damage to the chemical reactor or the fluid storage tank, it is necessary to secure a flow path for discharging the fluid. There is a problem.

It is therefore an object of the present invention to provide a ruptured disc assembly in which the leakage of fluid inside is reliably blocked.

Another object of the present invention is to provide a rupture disk assembly which is more reliably operated at a relatively low pressure.

It is still another object of the present invention to provide a rupture disk assembly that can more reliably secure a flow path for the discharge of fluid once it is ruptured.

According to a feature of the present invention for achieving the above object, the present invention is exposed to the pressure inside the fluid storage container of the support disk and the disk of the metal material, which is a plurality of pressure holes perforated, the fluid storage container A top disc, which is a disc made of metal, having a through hole formed in the center and a cut piece formed by an incision line, and a seal disposed between the support disc and the top disc to prevent leakage of fluid; And a lip blade provided between the support disk and a plurality of dividing blades formed by an incision line and plastically deformed by the pressure of the fluid to maintain a flow path, and a plate of a relatively thin metal material compared to the top disk. Installed in the through-hole of the top disk, and includes a setting disk that bursts when the pressure of the fluid storage container is above a certain It is open configuration.

The top disc has a plurality of radial incision lines formed in the radial direction to form the incision piece, and a circumferential incision line is formed near the edge of the top disc corresponding to one end of the radial incision line. It is formed extending to both ends of the improvement, the end of the circumferential cut line is formed with end holes.

Both sides of the seal are further provided with a protective pad to block the foreign material to be delivered to the seal, the protective pad is provided with a cut piece corresponding to the split blade of the lip blade.

The setting disk is characterized in that it has a value between 1 / 5-1 / 7 of the diameter of the top disk.

The setting disc is formed such that an incision line extends toward the center starting at the edge thereof and at the tip end thereof in a circumference having a predetermined diameter.

The support disk, the lip blade, the top disk and the setting disk are made of any one of stainless steel, nickel, nickel alloy, inconel, monel, hastelloy and tantalum, and a protective pad protecting the seal on both sides of the seal and the seal is Teflon. It is made of or graphite.

A ring-shaped gasket is installed around the outer edges of the top disc and the support disc, and a plurality of fastening holes are drilled through the gasket, the top disc, and the support disc.

According to the rupture disk assembly according to the present invention having such a configuration, it is possible to completely prevent the leakage of the fluid in the fluid storage container, it is effectively used in the fluid storage container in which a relatively low pressure is formed, once burst by overpressure When the flow path for the discharge of the fluid is smoothly achieved there is an advantage that can minimize the damage to the fluid storage container.

Hereinafter, a preferred embodiment of a rupture disk assembly according to the present invention will be described in detail with reference to the accompanying drawings.

1 is a perspective view showing the configuration of a preferred embodiment of a rupture disk assembly according to the present invention, Figure 2 is an exploded perspective view of the configuration of the embodiment of the present invention, Figures 3 to 6 constitute the present invention embodiment The support disk, the lip blade, the top disk and the setting disk are shown in plan view, respectively.

As shown in these figures, the support disk 10 forms one surface of the ruptured disk assembly. The support disk 10 is a thin disk made of metal. Preferably, since the corrosion resistance and the invariance of the material are required according to the type of fluid in the storage tank, the support disk 10 is made of stainless steel, nickel, nickel alloy, inconel, monel, hastelloy, tantalum, etc. One of the best chemical materials is used. The thickness of the supporter disk 10 is about 2.0t. A plurality of pressure holes 12 are punctured in the support disc 10. The pressure inside the fluid storage container acts through the pressure hole 12. A fastening hole 14 through which a bolt for installation of the disk assembly is formed around the edge of the support disk 10 is formed. The support disk 10 also serves to prevent the disk assembly from rupturing by rubbing when the external pressure is higher than the pressure inside the fluid storage container.

The support blade 10 is provided with a lip blade 20 to face the opposite side of the surface facing the inside of the fluid storage container. The lip blade 20 is also a thin metal plate, one of metal materials having excellent chemical resistance such as stainless steel, nickel, nickel alloy, Inconel, Monel, Hastelloy, tantalum is used. The lip blade 20 is relatively smaller in diameter than the support disk 10. The lip blades 20 are formed with a plurality of incision lines 22 to cross at their centers. A plurality of dividing blades 24 are formed on the lip blade 20 by the incision line 22. The dividing blades 24 have a substantially triangular shape, respectively. In the present embodiment, the three incisions 22 cross each other at one point, and a total of six division edges 24 are formed.

The seal 30 is made of Teflon material and is a sheet on a disc. The material of the seal 30 is most preferably a Teflon material, such as graphite, there is no pinhole, airtightness, oil tightness, chemical resistance and elasticity, it is possible to use an inert flexible material that does not react with other materials. The seal 30 serves to prevent leakage of fluid through the disk assembly. Protective pads 32 are provided on both sides of the seal 30, respectively. The protective pad 32 serves to prevent the seal 30 from being damaged or broken by foreign matter. That is, the protection pad 32 is installed on both sides of the seal 30 to block foreign materials.

The protective pad 32 may be made of the same material as the seal 30. The protective pad 32 is relatively thicker than the seal 30. However, the cut line 33 is formed on the protection pad 32. That is, the cut line 33 is formed at a position corresponding to the cut line 22 of the lip blade 20. A plurality of cut pieces 35 are formed on the protection pad 32 by the cut lines 22. For reference, the protective pad 32 is not necessarily used if it can prevent foreign matter from being transferred to both sides of the seal 30.

The top disk 40 is provided on the opposite side of the lip blade 20 around the seal 30. The top disk 40 is in contact with the outside of the fluid storage container. The top disk 40 is a metal plate, preferably made of stainless steel and has a thickness of about 0.2t. The top disk 40 is about 4 to 48 inches in diameter. Of course, the diameter of the top disk 40 is also the diameter of the disk assembly. The through hole 42 is formed in the center of the top disk 40. The through hole 42 is formed slightly smaller than the diameter of the setting disk 50 to be described below.

The top disk 40 is formed with a radial cut line 44 in the radial direction. The cut piece 45 is formed by the radial cut line 44. The radial cut line 44 is formed at a position corresponding to the cut lines 22 and 33 of the lip blade 20 or the protection pad 32 to produce a total of six cut pieces 45. The radial incision 44 is not connected to the through hole 42. Therefore, the cutting pieces 45 are in a state where their ends are not separated from each other, and are subsequently separated by the action of pressure.

One end of the radial cut line 44 is formed with a circumferential cut line 46 in the circumferential direction of the edge of the top disk 40, respectively. The circumferential incision 46 allows the incision 45 to be flipped more reliably during bursting operation by pressure. The circumferential incision 46 extends both ends at one end of the radial incision 44, as shown in FIG. End openings 47 are formed at ends of the circumferential incision 46, respectively.

A plurality of fastening holes 48 are formed around the edge of the top disc 40. The fastening hole 48 is drilled at a position corresponding to the fastening hole 14 of the support disk 10.

The setting disk 50 is installed in the through hole 42 of the top disk 40. The setting disk 50 is fixed to the top disk 40 by spot welding. The setting disk 50 has a relatively thin thickness and has a thickness of approximately 2/100 mm to 6/100 mm. By using the relatively thin setting disk 50, it is possible to provide a rupture disk assembly used at a relatively low pressure.

The setting disk 50 is a disc having a diameter slightly larger than the through hole 42 of the top disk 40. The diameter of the setting disk 50 is a value between 1/5 and 1/7 compared with the diameter of the top disk 40. The setting disc 50 is provided with an incision 52. The incision 52 extends toward the center at the edge of the setting disk 50. The cut line 52 does not extend to the center of the setting disk 50. The cut line 52 is formed at a position corresponding to the radial cut line 44 of the top disc 40. An end hole 54 is drilled at the end of the cut line 52.

The end hole 54 is formed at the end of each incision line 44, it becomes a circle when connecting the line where each end hole 54 is disposed. The bursting pressure of the setting disk 50 is determined by the diameter of the circle. The end through hole 54 is a stress concentration due to the notch characteristic prevents the crack direction from extending and bursting toward the center of the setting disk 50, and avoids stress concentration in the north, and uniform pressure points It bursts at and increases the reliability of the set pressure.

As such, the setting disk 50 actually sets the pressure at which the rupture of the disk can occur, which is the most important part. In addition to the diameter of the circle in which the end aperture 54 is disposed, the pressure conditions under which the rupture disk assembly can be used are determined depending on how the element such as the thickness of the setting disk 50 is set.

On the other hand, a gasket 60 is installed around the edges of the support disk 10 and the top disk 40, respectively. The gasket 60 is formed in a ring shape. A fastening hole 62 corresponding to the fastening holes 14 and 48 of the support disk 10 and the top disk 40 is also drilled in the gasket 60. The gasket 60 serves to prevent leakage through a portion of the gasket 60 to which the disc assembly is mounted. It is preferable that the gasket 60 is generally formed of a material of a sealing material having good sealing force as used in a flanged pipe fitting method.

Here, the gasket 60 is not necessarily required. For example, instead of rupturing the gasket 60 on the disc assembly, it may be placed on the counterpart to which the rupture disc assembly is mounted.

For reference, the support disk 10, the lip blade 20, the seal 30, the protection pad 32, and the top disk 40 are formed by spot welding the support disk 10 and the top disk 40 with each other. Combined. In this case, the seal 30 and the protection pad 32 may be slightly smaller in diameter than the support disk 10 and the top disk 40, or the portion to be spot welded may be partially removed. The gasket 60 is attached to the support disk 10 and the top disk 40 by bonding.

Hereinafter, the operation of the rupture disk assembly according to the present invention having the configuration as described above will be described in detail.

The rupture disk of the embodiment of the present invention is used in a fluid storage container in which a relatively low pressure is set, and is used when the gauge pressure is about 80 mmAq to about 1000 mmAq.

Normally, the pressure inside the fluid storage container acts on the lip blade 20 through the pressure hole 12 of the support disk 10. However, if the predetermined pressure value is not reached, the rupture of the setting disk 50 does not occur.

When the pressure inside the fluid storage container is greater than a predetermined pressure, the setting disk 50 is ruptured. As the setting disk 50 is ruptured, the seal 30 is also ruptured, and the fluid inside the fluid storage container is ruptured. Is discharged.

At this time, the split blade 24 of the lip blade 20 is bent so that the tip is directed toward the top disk 40 by the pressure inside the fluid storage container, and flips the protective pad 32 together. This is because the splitting blade 24 is plastically deformed by the pressure of the fluid. That is, the splitting blade 24 is plastically deformed so that the cut piece 35 of the protective pad 32 does not interfere with the flow of the fluid. Of course, the splitting blade 24 also serves to flip over the cut piece 45 of the top disc 40.

In addition, the split blade 24 of the lip blade 20 also serves to hold the seal 30 so as not to interfere with the discharge of the fluid. That is, the seal 30 is cut by the split blade 24 or the pressure of the fluid, and the split blade 24 serves to hold the cut portion so as not to disturb the flow of the fluid. In this case, it is possible to securely secure a flow path through which the fluid inside the fluid storage container is discharged to the outside.

Meanwhile, in the present invention, the setting disk 50 having a relatively thin thickness and a small diameter is installed in the top disk 40 so that the bursting pressure is determined by the setting disk 50. At this time, the setting disk 50 having a relatively thin thickness and a small diameter is easy to manufacture and handle, it is possible to set a more precise pressure. That is, since the top disk 40 does not have to be made into a thin plate like the setting disk 50, it is easier to manufacture the rupture disk assembly.

The rights of the present invention are not limited to the embodiments described above, but are defined by the claims, and various changes and modifications can be made by those skilled in the art within the scope of the claims. It is self-evident.

In the rupture disk assembly according to the present invention as described in detail above, the following effects can be obtained.

First, in the present invention, since the seal is placed between the support disk and the top disk, the leakage of fluid through the disk is completely prevented. Therefore, there is an effect that can completely block the leakage of environmental pollutants to the outside in the fluid storage tank.

In the present invention, the set pressure is determined by the characteristics of the setting disk rather than the characteristics of the top disk. Here, the diameter of the setting disk is much smaller than that of the top disk, so that precise manufacturing is possible. In other words, setting the operating pressure of the ruptured disc assembly is easier. Thus, there is an effect that can provide a rupture disk assembly that is operated accurately at a relatively low pressure.

In the present invention, a seal and a protective pad are used, which are made of Teflon material. Thus, when the rupture disk is ruptured and the fluid is discharged, it can hinder the flow of the fluid. However, since the split blade of the lip blade holds the seal and the protective pad in a plastically deformed state by the pressure of the fluid, the fluid can be discharged more smoothly, thereby preventing damage to the fluid storage container. That is, according to the present invention, the operation reliability of the ruptured disc assembly is improved.

Claims (7)

A support disk, which is a disk made of metal, in which a plurality of pressure holes are perforated by being exposed to the pressure inside the fluid storage container; A top disc, which is a disc of a metal material, which is exposed to the outside of the fluid storage container, a through hole is formed in the center, and a cut piece is formed by an incision line; A seal positioned between the support disk and the top disk to prevent leakage of fluid; A lip blade provided between the seal and the support disk, wherein a plurality of divided blades are formed by an incision line and plastically deformed by the pressure of the fluid to maintain a flow path; A lubricating disc assembly, comprising: a setting disc having a relatively thin metal plate compared to the top disc and installed in a through hole of the top disc to rupture when the pressure of the fluid storage container reaches a predetermined level. The circumferential direction of claim 1, wherein a plurality of radial incision lines are formed in the radial direction to form the incision piece, and the top disc is adjacent to an edge of the top disc corresponding to one end of the radial incision line. An incision line is formed extending to both ends of the radial incision line, the end portion of the circumferential incision line rupture disc assembly, characterized in that the end hole is formed. According to claim 2, Both sides of the seal is provided with a protective pad for blocking the transfer of foreign matter to the seal, the protective pad is a rupture disk assembly, characterized in that the cut piece corresponding to the divided blade of the lip blade . The rupture disk assembly of claim 1, wherein the setting disk has a value between 1 / 5-1 / 7 of the diameter of the top disk. 5. The rupture disc assembly of claim 4 wherein said setting disc is formed such that an incision line extends toward the center starting at the edge thereof and at the tip end thereof in a circumference having a predetermined diameter. The support disk, the lip blade, the top disk, and the setting disk are made of any one of stainless steel, nickel, nickel alloy, Inconel, Monel, Hastelloy, and tantalum. The protection pad for protecting the seal on both sides of the seal is a rupture disk assembly, characterized in that made of Teflon or graphite. The rupture disk assembly according to claim 6, wherein a ring-shaped gasket is installed around the outer edges of the top disk and the support disk, and a plurality of fastening holes are drilled through the gasket, the top disk, and the support disk. .

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