摘要:
A one-time-use pressure-actuated conduit closure is provided, to selectively withstand fluid pressure from one side of the device until the closure is removed remotely, the closure device being a frangible dome designed to withstand fluid pressures from one side but to rupture upon application of higher pressure on its other side, which provides a mechanism to isolate downhole fluid under (high) pressures in part of a well during operations for a period of time selected by an operator, and then to remove the isolation by breaking the rupture dome remotely by application of extra fluid pressure or other forces from surface. The frangible dome has features in at least one surface to guide and control its breakage to provide controlled shard sizes and shapes and a predictable opening for minimal obstruction of the conduit when broken away.
摘要:
Described is a safety disc comprising a foil element (3) having a thickness (s) of between 15 μπι and 1 mm and at least one non-through cut (2) having a width (L) less than or equal to 200 μπι, such that the ratio between width (L) and depth (H) is less than or equal to 2 and that the angle of penetration (a) of the cut is less than 90°.
摘要:
A rupture disk is provided for relieving pressure between the interior of a battery box and the exterior of the battery box, the box having an outlet opening. The apparatus includes a first layer that provides a gasket which abuts the battery box, the gasket having a central opening which aligns with the battery box opening. A second layer is in the form of a reverse buckling disk having a disk flange, a domed portion and a weakened portion on the dome that defines a disk burst pressure, the second layer having concave and convex sides. A third layer that is an outlet ring that sandwiches the second layer in between the first and the third layer layers, the outlet ring having a central opening surrounded by an edge. A plurality of teeth on the third layer extend from said edge inwardly a distance. A plurality of tabs are provided on the first and third layers, said tabs including circumferentially spaced apart tabs on each of said first and third layers, each tab having a tab opening, said tabs generally aligning so that a fastener can be passed through the tab openings of the first layer and the third layer. The third layer is attached to the second layer which is a metal disk by means of spot weld around the disk flange and the first layer attached to the metal disk by means of an adhesive thus forming a rupture disk assembly. The fasteners affix this rupture disk assembly to the box. The second layer is generally circular and surrounded by the fasteners. The teeth are positioned on the concave side of the second layer. In a preferred embodiment, the teeth do not extend so far inwardly that they extend inwardly beyond the weakened portion or score. From any radial line extending from the center of the layers, the weakened portion is reached before any tooth, the teeth thus being spaced radially a distance equal to or greater than the weakened portion or score.
摘要:
A reverse acting rupture disc and methods of forming the same are provided. Generally, the rupture disc comprises a bulged portion and a circumscribing flange area surrounding the bulged portion. The bulged portion includes a mechanically formed line-of-opening recess comprising a singular channel. In certain embodiments, the mechanical process by which the recess is formed utilizes a high-speed mill which removes a portion of metal from the bulged portion of the disc without disrupting the substantially uniform metallic grain structure of the metal adjacent the channel.
摘要:
A multiple-domed, scored rupture disc (28) having a non-apertured disc body (62) provided with separate, side-by-side, semi-circular concavo-convex bulges (76) and an arcuate line of weakness (68) circumscribing the bulges is provided with a diametrical ridge (74) extending across and serving as a divider between the bulged areas of the disc body. The distance between the outer margin of the ridge and a plane through the annular planar section of the disc body is from about 0.3 % to about 3 % of the diameter of the bulged area to increase the rigidity of the divider ridge. The greater rigidity of the divider ridge decreases the burst pressure of the disc.
摘要:
The invention provides a method, apparatus and system capable of releasing excess pressure above a predetermined point by opening and closing repeatedly through the actuation of a moving element. The said moving element is capable of bursting in case of a rise in pressure above a secondary predetermined point. The invention hence provides a way to regulate the pressure in two different manners depending on the severity of the overpressure.
摘要:
A safety head is disclosed. More particularly, a safety head comprising a circular flange portion and at least one protrusion is disclosed, wherein the at least one protrusion has a face exhibiting a blended radius of curvature. The circular flange portion may be thicker than the at least one protrusion. A safety head assembly is also disclosed, wherein the safety head assembly comprises an inlet safety head and an outlet safety head. Additionally, a safety head assembly is disclosed wherein the inlet safety head comprises a peripheral protrusion, the outlet safety head comprises a peripheral protrusion, and a clamp ring is configured to engage with the peripheral protrusions.
摘要:
A rupture disc for use in a pressure relief system includes a dome having a concave and a convex side and a circumferential flange associated therewith. At least one control score is formed or otherwise produced in the dome at a radial position between an apex of the dome and an outer circumference of the dome. At least one of a depth, a width, a length and the radial portion of the at least one control score is selectively controlled so that the depth, width, length, and/or radial position of the at least one control score controls the pressure at which the dome will start to collapse.
摘要:
A metal reverse buckling sanitary rupture disc is provided having a central bulged section in which the convex surface of the bulged section is relatively smooth and of substantially uninterrupted configuration. A small segment region of the central bulged section is strain hardened by plastic deformation causing the segment region to have greater residual stress than the remainder of the central bulged section. When the disc is subjected to an overpressure condition against the convex surface of the bulged section sufficient to effect reversal of the bulged section, such reversal commences at the higher residual stress segment region of the bulged section.
摘要:
A system and method of monitoring a pressurized container having an auxiliary device are provided. The system includes a sensor operable to provide a signal representative of at least one operating condition of the pressurized container. The system also includes a control operable to receive the signal from the sensor and generate a warning when the sensed operating condition will impact the operation of the auxiliary device.