Intelligent pressure-stabilizing stop-check valve

Abstract

The invention relates to an intelligent pressure-stabilizing stop-check valve comprising a valve body, a valve clack, a valve rod and a valve cover, wherein a valve cavity at the outlet side of a valve seat is internally provided with a cylindrical guide sleeve, the outer circumferential surface of the valve clack is movably matched with the inner wall of the guide sleeve, a cylinder of the guide sleeve is provided with a plurality of through holes for communicating an inlet channel with an outlet channel of the valve body and communicating the outlet channel of the valve body with a spring cavity; and the back center of the valve clack is in floating connection with the lower end surface of the valve rod, the upper end of the valve rod is connected with a transmission device, the inlet channel of the valve body is internally provided with a first pressure sensor, the outlet channel of the valve body is internally provided with a second pressure sensor, signal ends of the first pressure sensor and the second pressure sensor are connected with a controller, and a switching signal of the controller is connected to a power supply control circuit of the transmission device. The two pressure sensors detect pressure signals, the controller is used for controlling the valve to open and close and stabilizing the pressure of an outlet of the valve, and the intelligent pressure-stabilizing stop-check valve has the advantages of double functions of a stop valve and a pressure-stabilizing check valve, high pressure-stabilizing precision and the like and is suitable for a control valve of a medium pipeline with high requirement on system pressure stability.

Description

technical field [0001] The invention relates to the field of valves, in particular to a pressure stabilizing check valve. The invention is suitable for the control valve on the pipeline of the pressure stabilizing system to prevent the backflow of the medium and stabilize the system pressure. Background technique [0002] The pressure stabilizing check valve is used in the pipeline system to stabilize the outlet pressure of the valve, prevent the backflow of the outlet medium, and protect the safety of the system equipment. For example, the patent No. ZL200820163902.7 is a piston-type pressure-stabilizing check valve, including a valve body, a valve seat, a valve cover, a piston, a piston cylinder, seals and mounting parts, and the piston is formed with a sealing surface that cooperates with the valve seat. A one-way valve and a balance hole are formed on the piston, the inlet of the one-way valve communicates with the piston chamber, and the outlet communicates with the ou...

AI Technical Summary

Problems solved by technology

The disadvantage is that the accuracy of voltage stabilization is low, and the valve cannot be actively closed. It is necessary to install a stop valve in series on the pipeline to realize the control function of actively cutting off the pipeline. The system installation is complicated and the cost of system equipment is high.

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