Buoyancy adjusting plunger pump device for full-sea-depth submersible

Abstract

The invention discloses a buoyancy adjusting plunger pump device for a full-sea-depth submersible. The buoyancy adjusting plunger pump device comprises an input valve set, an output valve set, a compression-resistant cylinder body and a reciprocating driving piston mechanism. The compression-resistant cylinder body comprises an input insert-mounting hole, an output insert-mounting hole and a driving insert-mounting hole; the input insert-mounting hole and the output insert-mounting hole are located on the same axis, and the driving insert-mounting hole and the axis intersect vertically to forma T-shaped channel; inner threads are arranged in the three insert-mounting holes correspondingly; and the input valve set, the output valve set and the reciprocating driving piston mechanism are located in the input insert-mounting hole, the output insert-mounting hole and the driving insert-mounting hole of the compression-resistant cylinder body correspondingly and all fixed through the threads. The buoyancy adjusting plunger pump device can work at the full sea depth, a main movement structure bears external huge seawater pressure through a pressure-bearing part, reliable working of a system can be ensured, the device is simple, and the mechanical efficiency and volume efficiency are high.

Description

technical field [0001] The invention belongs to the technical field of submersibles, and relates to a buoyancy adjustment device, in particular to a buoyancy adjustment plunger pump device for deep-sea submersibles. Background technique [0002] With the continuous development of science and technology, human beings explore the ocean more and more deeply, often requiring the use of large-depth submersibles. For now, large-depth submersibles, especially large-depth untethered manned submersibles and unmanned submersibles, all need a buoyancy adjustment system to adjust the buoyancy of the submersible during underwater movement, so as to adjust whether the submersible floats or Dive down to compensate for buoyancy changes caused by changes in the external environment. Using seawater to adjust the buoyancy state of the submersible is a very simple and practical way, but the buoyancy adjustment of the full-sea deep submersible is faced with the impact of the pump body being aff...

AI Technical Summary

Problems solved by technology

[0003] The existing submersible buoyancy adjustment device mainly has the following problems: (1) the working water depth is not deep enough, basically works in the environment within 70MPa, and cannot reach the working environment of the full sea depth of 115MPa; (2) the implementation is complicated and the reliability is low

The high-pressure seawater pump with valve flow distribution or shaft flow distribution type has a large number of internal parts, complex equipment structure, and too many matching parts. Under the external high-pressure environment, the parts themselves are prone to deformation, causing excessive wear and tear of the equipment, and even failure to work; ( 3) Mechanical efficiency and volumetric efficiency are too low

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