Vertical inner lock pressure cap

Abstract

The invention provides a vertical inner lock pressure cap. A T-shaped handle, a locking bolt, an outer barrel nut, a push block, a baffle, four seal rings and eight clamping blocks are included, and alead screw mechanism is composed of the locking bolt and the outer barrel nut. Underwater, an ROV mechanical arm is used for applying torque to the T-shaped handle, the T-shaped handle is used for driving the locking bolt to rotate, the lead screw mechanism converts the rotation movement into the linear movement, and accordingly the whole pressure cap is driven to move. A flange protected by thepressure cap is provided with a flaring groove and a flaring middle hole, the axial inner face of an outer barrel nut cover plate is provided with eight plugs, and under assistance of the flaring structure, the pressure cap is in butt joint with the flange. The clamping blocks are initially in a deformation form, and along with rotation of the locking bolt, the clamping blocks gradually recover tothe original shape and are finally clamped in flange inner grooves for locking. Two seal ring grooves are formed in the outer wall of the outer barrel nut, two seal ring grooves are formed in the outer wall of the locking bolt, and accordingly lower flange seal protection is achieved.

Description

technical field [0001] The invention relates to a sealing and anti-loosening structure, in particular to a vertical internal locking pressure cap. Background technique [0002] Since human beings entered the industrial society, the demand for energy represented by oil has been continuously increasing. However, as a non-renewable resource, with continuous consumption, the limited oil resources on land can no longer meet the growing needs of human beings. Therefore, the exploration and development of offshore oil and gas resources has become the focus and focus of industrial countries in the world. [0003] The exploration and development of offshore oil and gas resources mainly adopts the underwater production system, which mainly includes: subsea oil wells, Christmas trees, connectors, jumpers, manifolds and risers. The construction of the subsea production system has such a process: after the completion of drilling, logging and all the test work, the wellhead of the oil w...

AI Technical Summary

Problems solved by technology

[0007] The purpose of the present invention is to provide a vertical internal locking pressure cap in order to fill the gaps in the prior art, so as to protect the deep-water vertical connector, overcome the problems of underwater installation difficulties, limited operating space, etc.; and propose thread and block Double locking mechanism, double locking includes thread self-locking and clamping block into the groove mechanism locking, which solves the self-locking problem of the pressure cap under water; adopts a purely mechanical structure, which improves the reliability of the pressure cap for long-term underwater work sex

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