An adjustable back pressure valve device for high pressure system and using method

Abstract

An adjustable back pressure valve device for a high-pressure system and its use method, comprising a connected upper valve body and a lower valve body, a joint is arranged on the top of the upper valve body, a valve seat is arranged in the upper valve body, and a sapphire is arranged at the bottom of the valve seat Seat, the top of the lower valve body is provided with a spring base, the top surface of the spring base is provided with a spool base, the spool base is provided with a first spring, the top of the first spring is provided with a gem base, the top of the gem base is provided with a gem base, and the gem base It is a contour sleeve, the upper part of the contour sleeve is located in the cavity of the gem seat, and the ruby ​​ball is located on the top of the contour sleeve. The invention adopts the ruby ​​ball as the valve core and the sapphire seat as the valve seat, which can realize the back pressure under high pressure. Compared with the pressure control function realized by the spring and diaphragm structure, the back pressure performance and flexibility are better through the cooperation of the ruby ​​ball as the valve core and the sapphire seat as the valve seat.

Description

technical field [0001] The invention relates to the field of pipeline control valves, in particular to an adjustable back pressure valve device used in a high-pressure system and a usage method. Background technique [0002] The back pressure valve is one of the main components of the back pressure experimental system. Since the pressure in the pipeline is constantly changing, the pressure in the pipeline can be well maintained by using the back pressure valve, so that the pump in the pipeline can deliver the flow normally. For example, installing a back pressure valve in front of the metering pump can maintain the pressure in the pipe very well, and at the same time can reduce the siphon tendency in the pipeline very well, and can ensure the normal use of the metering pump. [0003] The back pressure valve generally adjusts the pressure in the pipeline through the opening of the valve. In order to stabilize the pressure in the pipeline, the pressure control accuracy of the ...

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