A balanced safety valve group for buoyancy adjustment system

Abstract

The invention discloses a balanced safety valve group for a buoyancy adjustment system, which comprises a valve body, a balanced valve assembly, a safety valve assembly and a valve cover. The balanced valve assembly is arranged at the first through hole of the valve body. The balanced valve assembly It 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 is arranged at the second through hole of the valve body, and the safety valve assembly includes a second valve stem, a second The valve seat, the second spring seat, the second valve core assembly, the second spring, the cover and the adjusting screw; The second channels jointly form the main valve cavity; the valve cover is provided with a first pipeline interface, and the valve body is provided with a second pipeline interface, a third pipeline interface and a fourth pipeline interface. The valve core assembly in the present invention has automatic centering ability and good sealing performance, and at the same time, the detachment of the valve core from the valve stem is avoided through the function of the limit ball joint.

Description

technical field [0001] The invention belongs to the technical field of hydraulic valves, and more specifically relates to a balanced safety valve group used in a buoyancy adjustment system. Background technique [0002] With the development of society and science and technology, human beings' demand for the exploration and utilization of marine resources continues to grow. Submersibles have gradually been used in the development of marine resources due to their flexibility and ability to work underwater for a long time, and are also widely used in military affairs. Uses, such as reconnaissance, mine laying, mine elimination, and submarine rescue. Therefore, the research and development of underwater robots is of great significance to many aspects such as protecting the marine environment, developing marine resources, forecasting marine disasters, safeguarding national marine rights and interests, and developing the national economy. [0003] The balance valve and safety val...

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.

Images