High-pressure sealing test cabin for deep coring device cabin body

Abstract

The invention relates to a high-pressure sealing test cabin for a deep coring device cabin. The high-pressure sealing test cabin comprises a cylinder body, an upper end sealing device and a lower endsealing device. The upper end sealing device comprises a locking ring, a center rod, an inner cylinder and an outer cylinder, wherein the center rod, the inner cylinder and the outer cylinder are arranged from inside to outside. The lower end of the center rod is provided with an outer step for supporting the inner cylinder, the upper end of the inner cylinder is provided with a supporting surfacefor supporting the inner step of the outer cylinder, and the lower end of the outer cylinder is fixedly connected with the cylinder body; the locking ring is fixedly connected with the outer cylinder; the upper end of the center rod is in threaded connection with the locking ring, and the upper end sealing device can tighten the center rod upwards through threads to enable the outer step to abutagainst the inner cylinder and enable the supporting face to abut against the inner step so as to form hard sealing of multiple end faces. According to the invention, thread tensioning is adopted, sothat the sealing end face is attached more tightly, the sealing effect is enhanced, and the test cabin can be suitable for a high-pressure environment; and the multiple sealing faces are sealed through conical faces, the sealing performance is more reliable, the test cabin can be used for testing the pressure-resistant characteristic of the pressure maintaining cabin, and test bases and data supports are provided for research, development and design of the fidelity coring drilling machine.

Description

technical field [0001] The invention relates to the technical field of sealing devices for core removers, in particular to a high-pressure seal test chamber for deep core remover cabins. Background technique [0002] After the subsea drilling rig obtains samples in the deep sea, it needs the pressure-holding control device of the fidelity chamber to maintain the pressure and seal the samples in the in-situ environment. The sealing performance of the pressure-holding cabin directly affects the pressure-holding performance of the pressure-holding cabin. [0003] The pressure-holding performance of the fidelity chamber needs to be continuously verified and improved through experiments, so the test platform came into being. The test bench includes a test chamber and an external pressure supply unit. The sealing devices at the upper end and the lower end of the existing test chamber are sealed by threaded plugs, and the sealing performance of the threaded seal is not good, and ...

AI Technical Summary

Problems solved by technology

The sealing devices at the upper and lower ends of the existing test chamber are sealed with threaded plugs. The sealing performance of the threaded seal is not good, and the seal is prone to failure under high pressure.

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