No coin nor oath required. For personal study only.
This invention relates to high-pressure, female couplings for sub-sea use in oil and gas exploration and production applications. An annular cavity in the wall of the probe seal is open to the outer surface of the (generally) ring-shaped probe seal. Hydraulic fluid, under pressure, enters the annular cavity through the opening and exerts a radial force on sealing elements. The annular cavity has an L-shaped or a T-shaped cross-section. This provides additional 'energisation' to the seal. Relatively stiff seal materials, such as PEEK, also may be used.
π SIMILAR VOLUMES
The interface between concrete and steel in reinforced concrete governs the interaction between the two types of materials under loading. When the interface is seriously damaged, e.g. when a macro-crack is formed, de-bonding takes place with large slip, and the load-transferring capacity of the inte
that uses a seal on the stem of the valve pin to prevent leakage of molten material. The seal is typically C-shaped, U-shaped or V-shaped in cross-section.