CA2560499A1 - Enhanced reverse buckling rupture disc - Google Patents
Enhanced reverse buckling rupture disc Download PDFInfo
- Publication number
- CA2560499A1 CA2560499A1 CA002560499A CA2560499A CA2560499A1 CA 2560499 A1 CA2560499 A1 CA 2560499A1 CA 002560499 A CA002560499 A CA 002560499A CA 2560499 A CA2560499 A CA 2560499A CA 2560499 A1 CA2560499 A1 CA 2560499A1
- Authority
- CA
- Canada
- Prior art keywords
- disc
- region
- dome
- concave
- convex
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K17/00—Safety valves; Equalising valves, e.g. pressure relief valves
- F16K17/02—Safety valves; Equalising valves, e.g. pressure relief valves opening on surplus pressure on one side; closing on insufficient pressure on one side
- F16K17/14—Safety valves; Equalising valves, e.g. pressure relief valves opening on surplus pressure on one side; closing on insufficient pressure on one side with fracturing member
- F16K17/16—Safety valves; Equalising valves, e.g. pressure relief valves opening on surplus pressure on one side; closing on insufficient pressure on one side with fracturing member with fracturing diaphragm ; Rupture discs
- F16K17/1606—Safety valves; Equalising valves, e.g. pressure relief valves opening on surplus pressure on one side; closing on insufficient pressure on one side with fracturing member with fracturing diaphragm ; Rupture discs of the reverse-buckling-type
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Safety Valves (AREA)
- Pressure Vessels And Lids Thereof (AREA)
Abstract
An improved reverse rupture disc for use as a safety pressure relief device is provided.
The disc is defined by an annular flat flange region, a concave-convex disc dome region and a transition region that joins the disc-shaped flat flange region to the concave-convex disc dome region. One or more deformations may be formed at or near the apex of the disc dome region for weakening the disc to the point that incidental damage to the disc will not weaken the disc any further, thereby ensuring that the disc will reverse at a certain pressure, and no lower. The disc may also formed with one or more irregular transition regions at the base of the disc and a partial circular groove in the transition region. The irregular transition region of the disc cooperates with a shear enhancing means such as a protrusion or notch formed in a support ring or disc holder disposed downstream of the disc to sever the disc dome from the annular flat flange region along the groove in the transition region. A back pressure support means extends over the transition region and potentially over the dome region to prevent vacuum and forward to reverse cyclical pressures in the convex direction from damaging or destroying the disc. An ungrooved region of the transition region acts as a hinge holding the ruptured disc dome to the flat flange region after the disc has ruptured. The ruptured disc dome hangs over an arcuate projection formed in the support ring or disc holder, which helps to prevent the disc from fragmenting.
The disc is defined by an annular flat flange region, a concave-convex disc dome region and a transition region that joins the disc-shaped flat flange region to the concave-convex disc dome region. One or more deformations may be formed at or near the apex of the disc dome region for weakening the disc to the point that incidental damage to the disc will not weaken the disc any further, thereby ensuring that the disc will reverse at a certain pressure, and no lower. The disc may also formed with one or more irregular transition regions at the base of the disc and a partial circular groove in the transition region. The irregular transition region of the disc cooperates with a shear enhancing means such as a protrusion or notch formed in a support ring or disc holder disposed downstream of the disc to sever the disc dome from the annular flat flange region along the groove in the transition region. A back pressure support means extends over the transition region and potentially over the dome region to prevent vacuum and forward to reverse cyclical pressures in the convex direction from damaging or destroying the disc. An ungrooved region of the transition region acts as a hinge holding the ruptured disc dome to the flat flange region after the disc has ruptured. The ruptured disc dome hangs over an arcuate projection formed in the support ring or disc holder, which helps to prevent the disc from fragmenting.
Claims (10)
1. A reverse buckling rupture disc, comprising:
a) an annular flat flange region;
b) a concave-convex disc dome region;
c) a transition region that joins the annular flat flange region to the concave-convex disc dome;
d) a groove; and e) a back pressure support device situated adjacent the concave-convex disc dome region.
a) an annular flat flange region;
b) a concave-convex disc dome region;
c) a transition region that joins the annular flat flange region to the concave-convex disc dome;
d) a groove; and e) a back pressure support device situated adjacent the concave-convex disc dome region.
2. The reverse buckling rupture disc of claim 1, wherein the device is located on the convex side of the disc dome.
3. The reverse buckling rupture disc of claim 1 or 2, wherein the transition region includes an irregular transition region extending into the periphery of the disc dome region, such that the transition region defines an irregular diameter.
4. The reverse buckling rupture disc of claim 1, 2 or 3, wherein the device defines a shape corresponding to the shape of the transition region.
5. The reverse buckling rupture disc of any one of claims 1 to 4, wherein the device encircles a portion of the concave-convex disc dome region.
6. The reverse buckling rupture disc of any one of claims 1 to 5, wherein the device defines a flange with an interior diameter smaller than the diameter defined by the groove.
7. The reverse buckling rupture disc of any one of claims 1 to 6, wherein the device comprises an inlet ring.
8. The reverse buckling rupture disc of any one of claims 1 to 6, wherein the device comprises a disc holder.
9. The reverse buckling rupture disc of any one of claims 1 to 8, wherein the concave-convex disc dome region defines a concave deformation at or near the apex of the dome.
10. A reverse buckling rupture disc, comprising:
a) an annular flat flange region;
b) a concave-convex disc dome region;
c) a transition region that joins the annular flat flange region to the concave-convex disc dome;
d) a groove; and e) a means for providing back pressure support.
a) an annular flat flange region;
b) a concave-convex disc dome region;
c) a transition region that joins the annular flat flange region to the concave-convex disc dome;
d) a groove; and e) a means for providing back pressure support.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CA002328834A CA2328834C (en) | 1999-03-15 | 1999-03-15 | Enhanced reverse buckling rupture disc |
Related Parent Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA002328834A Division CA2328834C (en) | 1999-03-15 | 1999-03-15 | Enhanced reverse buckling rupture disc |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CA2560499A1 true CA2560499A1 (en) | 2000-09-21 |
| CA2560499C CA2560499C (en) | 2010-03-09 |
Family
ID=37310284
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA002560499A Expired - Lifetime CA2560499C (en) | 1999-03-15 | 1999-03-15 | Enhanced reverse buckling rupture disc |
Country Status (1)
| Country | Link |
|---|---|
| CA (1) | CA2560499C (en) |
-
1999
- 1999-03-15 CA CA002560499A patent/CA2560499C/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| CA2560499C (en) | 2010-03-09 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| EEER | Examination request | ||
| MKEX | Expiry |
Effective date: 20190315 |