A photovoltaic hydraulic control device for a valve

Abstract

The invention belongs to the technical field of valve control, and particularly relates to a photovoltaic hydraulic control device of a valve. The photovoltaic hydraulic control device of the valve comprises a photovoltaic hydraulic drive box, wherein the interior of the photovoltaic hydraulic drive box is longitudinally divided into three adjacent compartments; a hydraulic system is arranged inside the first compartment; a photovoltaic storage battery is arranged inside the second compartment; a charge controller, an inverter, a frequency converter and a control system are arranged inside the third compartment; the hydraulic system comprises a hydraulic accumulator, a hydraulic control circuit, an oil tank and a motor oil pump. The photovoltaic hydraulic control device of the valve can achieve remote monitoring, and can regulate and control flow or pressure of a pipeline in the absence of a power grid in a flexible control mode; with photovoltaic energy as primary energy and hydraulic oil as secondary energy storage, the photovoltaic hydraulic control device of the valve can work both in the presence of electricity and in the absence of electricity, with high energy utilization efficiency.

Description

technical field [0001] The invention belongs to the technical field of valve control, and in particular relates to a photovoltaic hydraulic control device for a valve. Background technique [0002] In long-distance water diversion projects (such as the South-to-North Water Diversion Project), due to geographical constraints or wiring cost constraints, a rather long part of the pipeline is not covered by the grid, and the opening and closing of the valves in this part of the pipeline are manually controlled. Automated line adjustments are therefore not possible. At the same time, due to the water hammer effect, the valve operation control on the long-distance water pipeline has strict requirements, including the switching mode and speed (for example, the valve is required to be closed in stages, and the speed of each stage can be adjusted in a wide range), the existing manual control will open When the valve is closed suddenly, the water flow will generate a certain pressure...

AI Technical Summary

Problems solved by technology

[0002] In long-distance water diversion projects (such as the South-to-North Water Diversion Project), due to geographical constraints or wiring cost constraints, a rather long part of the pipeline is not covered by the grid, and the opening and closing of the valves in this part of the pipeline are manually controlled. Automated line adjustments are therefore not possible

At the same time, due to the water hammer effect, the valve operation control on the long-distance water pipeline has strict requirements, including the switching mode and speed (for example, the valve is required to be closed in stages, and the speed of each stage can be adjusted in a wide range), the existing manual control will open When the valve is closed suddenly, the water flow will generate a certain pressure on the valve, which will cause the valve to be damaged

In addition, conventional photovoltaic systems only use photovoltaic power control in areas covered by power grids. When the power is insufficient, it cannot meet the needs of valve operation in water transfer projects.

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