A buoyancy adjustment device and method for medium and shallow depth submersibles

Abstract

The invention relates to a buoyancy adjustment device and adjustment method for medium and shallow depth submersibles, comprising a pressure-resistant water tank, a pump source is installed at the bottom of the pressure-resistant water tank, and a drainage branch connected to the pump source is arranged outside the pressure-resistant water tank , Water injection branch, pump source includes motor, sea water pump, sea water pump is connected with water inlet filter, outlet is connected with safety valve, and one end of the pipeline protruding from safety valve is open; drainage branch includes water outlet with sea water pump connected to a one-way valve, the one-way valve is connected to the drain switch valve, the drain switch valve is connected to a sea filter, and the sea filter is connected to the external sea water, and the water injection branch includes a water injection filter connected to the bottom of the pressure-resistant water tank, The water inlet end of the water injection filter is connected with a throttling hole, the water inlet end of the throttle hole is connected with a speed regulating valve, the water inlet end of the speed regulating valve is connected with a water injection switch valve, and the water inlet end of the water injection switch valve is connected to the sea. The filter is communicated, and the water injection switch valve is communicated with the drain switch valve, which reduces the number of valve parts in the system.

Description

technical field [0001] The invention relates to the technical field of submersibles, in particular to a buoyancy regulating device and method for mid-shallow depth submersibles. Background technique [0002] After the submersible is sampled, the weight of the submersible increases, or the weight decreases after releasing other equipment, or the seawater density changes due to the characteristics of the water medium, such as changes in underwater pressure and temperature; as the depth of the dive increases, The elastic deformation of the pressure-resistant structure of the submersible causes the change of the displacement volume, and these factors all cause the balance of gravity and buoyancy to be broken. Therefore, in order to ensure that the submersible has a relatively stable operating attitude at a certain depth, it is necessary to adjust its buoyancy. [0003] At present, the buoyancy adjustment methods of submersibles include oil pump type, piston type, anchor chain t...

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Problems solved by technology

[0003] At present, the buoyancy adjustment methods of submersibles include oil pump type, piston type, anchor chain type, gasoline type, high-pressure air type, and seawater pump type. Among these existing adjustment methods, there are various limitations, such as oil pump type. For small unmanned submersibles that require small buoyancy adjustment capabilities; the buoyancy adjustment method of sea water pumps means that the plunger of the sea water pump bears the force matching the working pressure in both directions, and the current working conditions of the plunger of sea water pumps on the market are: The plunger bears a force matching the working pressure when it is under pressure, and only bears a small return force when the plunger returns. Therefore, the plunger return of commercially available sea water pumps generally adopts spring return, and some of the forced return are only designed. The return mechanism with weak structural strength, and the package design of the sliding shoe and the plunger head are all designed according to the small return force condition, so the development difficulty and development cost of the sea water pump with the sea water pump buoyancy adjustment method are very high. High, and because it is a developed part, the reliability cannot be effectively guaranteed; in the working condition of medium and shallow depths, it is difficult for the existing buoyancy adjustment method to meet the requirements of compact structure, low cost and high reliability at the same time

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