A dual-pump-based buoyancy adjustment system

Abstract

The invention discloses a buoyancy adjustment system based on double pumps, which includes a balanced safety valve group, a first inlet and outlet pipe, a one-way valve, a second inlet and outlet pipe, a first motor pump group and a second motor pump group. The valve group includes a valve body, a balance valve assembly, a safety valve assembly and a bonnet. The balance valve assembly includes a first valve stem, a first valve seat, a screw plug, a first valve core assembly and a first spring; the safety valve assembly includes a second The valve rod, the second valve seat, the second spring seat, the second valve core assembly, the second spring, the cover and the adjusting screw; one end of the first inlet and outlet pipes are respectively connected to the check valve and the second pipe interface, and the first motor The pump unit is connected to the third pipeline interface, the outlet is connected to the first pipeline interface, the check valve is connected to the second motor pump unit, and one end of the second inlet and outlet pipes is respectively connected to the fourth pipeline interface and the second motor pump unit. The invention realizes the water injection and drainage process of the system by independent control of two motor pump groups, simplifies the pipeline connection, and improves the controllability of the system.

Description

technical field [0001] The invention belongs to the technical field of underwater navigation, and more specifically relates to a buoyancy adjustment system based on double pumps. Background technique [0002] Due to the advantages of flexible maneuverability and the ability to work underwater for a long time, underwater vehicles can be used for deep ocean exploration and seabed salvage, and have gradually become an important tool for human beings to develop and utilize marine resources. The seawater hydraulic buoyancy adjustment system is an important part of the underwater vehicle, which can compensate for the structural deformation of the submersible, changes in seawater density and salinity, and changes in buoyancy and weight caused by load changes, and can be replaced in complex ocean environments The vertical propeller changes the weight of the vehicle by injecting or discharging seawater into the water-carrying tank, so as to realize the unpowered depth, fixed depth an...

AI Technical Summary

Problems solved by technology

Commonly used spool structures include ball valve type and cone valve type. Due to the characteristics of the spherical spool adapting to the valve port, the ball valve type has the advantage of good sealing. However, because the ball spool is separated from the spool seat, the ball valve spool is in the The dynamic response when opening is poor, which may even cause the ball valve core to separate from the valve seat and cause the valve port seal to fail

The dynamic performance of the cone valve spool is good, but because the spool and the valve port do not have the self-adaptive function, the sealing performance is poor.

[0004] The existing single-pump buoyancy adjustment system usually adjusts the injection and discharge of seawater through a one-way pump and the control of the shut-off valve group, and the pipeline connection in the shut-off valve group is complicated, which needs to be controlled by hydraulic control or electric control. Control the switch of the shut-off valve

In the deep sea, the pressure is high and the conditions are complex, which requires high stability and quick response of the buoyancy adjustment system, and the shut-off valve group in the system has high requirements for sealing

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