Electromagnetic pilot safety Y-shaped water attack pressure release valve directly driven by gear motor

Abstract

The invention discloses an electromagnetic pilot safety Y-shaped water attack pressure release valve directly driven by a gear motor, and relates to the technical field of water attack pressure release valves. Automatic pressure release can be rapidly achieved through the action of an electromagnetic valve, when a pilot valve breaks down, a main valve device can be manually opened, and it is guaranteed that the pressure release valve can still work normally. The Y-shaped water attack pressure release valve comprises a Y-shaped water attack pressure release valve main valve, an electromagnetic pilot operated valve and a controller. The main valve comprises a valve body, a special-shaped external thread valve rod and a valve cover, the middle of the special-shaped external thread valve rod is in threaded connection with the valve cover, a valve disc is arranged at the first end of a valve rod, extends into the valve body and is in sealing fit with the valve body, and the second end of the special-shaped rod is sequentially connected with the gear motor and a hand wheel; the main valve is communicated with the gear motor through the electromagnetic pilot operated valve; and a pressure sensor is arranged at an oil inlet of the main valve and can collect oil pressure at an inlet of the valve body. The pressure sensor and the electromagnetic pilot operated valve are electrically connected with the controller. The performance of the Y-shaped water attack pressure release valve is improved.

Description

technical field [0001] The present application relates to the technical field of water hammer pressure relief valves, in particular to an electromagnetic pilot safety Y-type water hammer pressure relief valve directly driven by a gear motor. Background technique [0002] In long-distance oil pipelines, unexpected shutdown of pumps or abnormal opening and closing of valves will cause water hammer, which may cause local overpressure in the pipeline and cause pipe burst accidents. In order to ensure the safe operation of long-distance oil pipelines and related equipment, water hammer pressure relief valves are usually used to release water hammer pressure. When water hammer occurs in the pipeline, the pressure relief valve can quickly open and release the high-pressure medium, so that the pipeline pressure returns to the normal range, so as to achieve the purpose of protecting the pipeline and the equipment in the pipeline. Therefore, the opening speed of the pressure relief v...

AI Technical Summary

Problems solved by technology

[0004] 1. The valve cavity of the main valve is connected with the front and rear pipelines through the pilot valve, and the liquid in the main valve cavity needs to be discharged during operation. Due to the limitation of the structure of the pilot valve and the diameter of the pressure pipe, the discharge speed of the liquid in the main valve cavity is slow, making the main valve cannot be opened quickly;

[0005] 2. The oil needs to flow through the main valve cavity, so the requirements for the liquid medium are high, and a filter needs to be installed, so that the traditional water hammer pressure relief valve can only be used for long-distance oil product pipelines, which limits its application scenarios;

[0006] 3. Due to the existence of the main valve spring, the valve core will flutter during operation, which will aggravate the wear of the valve core and shorten the service life;

[0007] 4. The main valve only has two states of open and closed, and the opening area of ​​the main valve cannot be adjusted

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