Buoyancy adjusting device and method for medium-shallow depth submersible

Abstract

The invention discloses a buoyancy adjusting device and method for medium-shallow depth submersible. The buoyancy adjusting device comprises a pressure-resistant water tank, a pump source is installed at the bottom of the pressure-resistant water tank, a drainage branch and a water injection branch which communicate with the pump source are arranged outside the pressure-resistant water tank, the pump source comprises a motor and a sea water pump, the sea water pump is connected with a water inlet filter, and an outlet is connected with a safety valve. One end, extending out of the safety valve, of a pipeline is open. The drainage branch comprises a one-way valve communicating with a water outlet of the sea water pump, the one-way valve communicates with a drainage switch valve, the drainage switch valve is connected with a sea filter, the sea filter communicates with outside seawater, the water injection branch comprises a water injection filter communicating with the bottom of the pressure-resistant water tank, and the water inlet end of the water injection filter communicates with a throttling hole. The water inlet end of the throttling hole communicates with a speed regulating valve, the water inlet end of the speed regulating valve communicates with a water injection switch valve, the water inlet end of the water injection switch valve communicates with the sea filter, the water injection switch valve communicates with the drainage switch valve, and the number of valves of the system is reduced.

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...

AI Technical Summary

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

Images