The invention relates to a self-tightening sealing and
stress testing device for self-enhancing of an ultrahigh-pressure
pump head body, belonging to the technical field of self-enhancing of a
pump head body of an ultrahigh-pressure container. The self-tightening sealing and
stress testing device comprises an ultrahigh-pressure
pump head body, a horizontal sealed taper rod, a
signal lead-out seal taper, a horizontally sealed adjusting rod, an O-shaped seal ring, a
signal lead-out rod, an
organic glass sealed taper ring, quick-plugging joints, high-strength enameled wires, a
strain gauge and a wiring transition plate. All sealing surfaces of the device adopt taper surface hard sealing, the higher the
hydraulic pressure in the inner cavity of the pump head body is, the larger the pressure on the sealing surfaces is, and the reliability of sealing under ultrahigh pressure can be guaranteed; in assembling, the sealing of the sealing surfaces in low-pressure or non-pressure state can be controlled by thread pretightening force. The self-tightening sealing and
stress testing device has the characteristics of being convenient to install, and convenient and fast to wire. According to the device, the difficulty in testing the stress of the container wall by leading out a wire from the ultrahigh-pressure sealed container can be solved by adopting the
combined use of the
organic glass sealed taper ring, the O-shaped seal ring and the wire lead-out rod.