Hydraulic wellhead connector

A hydraulic connector for connecting between two cylindrical bodies, comprising:

• jaws positioned around the two cylindrical bodies and pre-loaded by an actuator hydraulic main piston through a pressurization chamber provided proximate an upper end of a radially outward surface of the actuator hydraulic main piston, wherein the actuator hydraulic main piston is positioned around the jaws, and wherein a set of cooperating conical surfaces are provided between the jaws and the actuator hydraulic main piston, wherein the set of cooperating conical surfaces comprises a radially outward conical surface of an upper end of the jaws positioned radially inwardly adjacent a radially inward conical surface of the actuator hydraulic main piston, and a set of cooperating cylindrical surfaces are provided between the jaws and the actuator hydraulic main piston, wherein the set of cooperating cylindrical surfaces comprises a radially outward cylindrical surface of a lower end of the jaws positioned radially inwardly adjacent a radially inward cylindrical surface of the actuator hydraulic main piston, and wherein the set of cooperating conical surfaces are in engaging contact in a locked position of the hydraulic connector and the set of cooperating cylindrical surfaces are in engaging contact in the locked position of the hydraulic connector;
• a primary unlocking chamber provided proximate a lower end of the radially outward surface of the actuator hydraulic main piston;
• a secondary hydraulic piston positioned around the actuator hydraulic main piston proximate the lower end of the radially outward surface and a secondary unlocking chamber provided proximate a lower end of the secondary hydraulic piston that provides redundancy in unlocking, the secondary hydraulic piston acting on an external face of the actuator hydraulic main piston;
• an external liner disposed around the actuator hydraulic main piston and the secondary hydraulic piston;
• and
• a two-part top cover attached to the external liner and to a top cylindrical body of the two cylindrical bodies, through a two-part ring, wherein the two parts of the two-part ring are attached to each other by screws.