Deep-water horizontal connector pressure cap

Abstract

The invention provides a deep-water horizontal connector pressure cap. The pressure cap comprises a sealing mechanism, a pulling mechanism and a feeding mechanism, and provides a spring and filler double-locking mechanism, wherein double locking comprises spring locking and filler holding and locking, and the self-locking problem of the pressure cap under water is solved; a double-layer sealing mechanism is provided, a sealing cavity formed between seal rings is pressurized, the problem that the pressurizing space in a pipeline is large is avoided, and a underwater sealing test can be easily completed; a pulling hydraulic cylinder is designed, after an inner layer is pulled in place, the pulling hydraulic cylinder is not withdrawn, but continues to provide pulling force for the inner layerso as to form fixed constraint; taking an outer layer as a base, the inner layer is pushed, so that a clamping block is in place and a lower flange is locked; the pure mechanical structure is adopted, so that the reliability of underwater long-term working of the horizontal pressure cap is improved; a counterweight and a guide position are optimized, and the overturning problem in the installation process of the horizontal pressure cap is solved; and a machinery and implement integrated design scheme is provided, and the underwater installation efficiency is improved.

Description

technical field [0001] The invention relates to a sealing and anti-loosening structure, in particular to a deep-water horizontal connector 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...

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Problems solved by technology

[0007] The main purpose of the present invention is to fill in the gaps in the prior art, and provide a deep-water horizontal connector pressure cap, thereby protecting the deep-water horizontal connector, overcoming the difficulties of underwater installation and limited operating space; the spring and The double-locking mechanism of the stuffing, the double-locking includes the spring locking and the packing locking, which solves the self-locking problem of the pressure cap under water; a double-layer sealing mechanism is proposed, and the sealing cavity formed between the two is added. pressure, avoiding the problem of large pressurized space in the pipeline, and can easily complete the underwater sealing test; the hydraulic cylinder is designed to pull the inner layer in place without retracting, and continues to provide tension for the inner layer to form a fixed constraint ;The outer layer uses the inner layer as the base to push the block in place and lock the lower flange; the purely mechanical structure improves the reliability of the horizontal pressure cap for long-term underwater work; the counterweight and guiding position are optimized to solve the problem of The overturning problem in the installation process of the horizontal pressure cap was solved; the integrated design scheme of the machine was proposed to improve the efficiency of the underwater installation

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