A vertical inner locking pressure cap

Abstract

The invention provides a vertical inner locking pressure cap, comprising a T-shaped handle, a locking bolt, an outer cylinder nut, a push block, a baffle plate, four sealing rings, eight clamping blocks, a locking bolt and The outer cylinder nut constitutes a screw mechanism; under water, the ROV manipulator applies torque to the T-shaped handle, and the T-shaped handle drives the locking bolt to rotate, and the screw mechanism converts the rotary motion into linear motion, thereby driving the entire pressure cap to move; The flange protected by the pressure cap is provided with a flared groove and a flared center hole, and eight pins are provided on the axial inner surface of the outer cylinder nut cover. The block is initially deformed, and as the locking bolt rotates, the block gradually returns to its original state, and finally snaps into the inner groove of the flange to complete the locking; there are two sealing ring grooves on the outer wall of the outer cylinder nut, and two on the outer wall of the locking bolt. The sealing ring groove realizes the sealing protection of the lower flange.

Description

technical field [0001] The invention relates to a sealing and anti-loosening structure, in particular to a vertical inner locking pressure cap. Background technique [0002] Since human beings entered the industrial society, the demand for energy represented by petroleum has been increasing continuously. However, as a non-renewable resource, with the continuous consumption of oil, 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 the world's industrial countries. [0003] The exploration and development of offshore oil and gas resources mainly adopts underwater production systems, which mainly include subsea oil wells, Christmas trees, connectors, jumpers, manifolds and risers. Subsea production system construction involves such a process: after drilling, logging and all the test work is completed, the wellhead must be tempora...

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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