Pressure maintaining system adopting variable-frequency pressure maintaining equipment and self-adaptive control method

Abstract

The invention discloses a pressure maintaining system adopting variable-frequency pressure maintaining equipment and a self-adaptive control method. The system comprises a pressure container, a non-pressure container and pressure maintaining equipment; and the pressure container is connected with the non-pressure container through pressure maintaining equipment. The pressure container is provided with a sensor. The sensor and the pressure maintaining equipment are both connected with a controller, and the controller is connected with a man-machine interaction device. The invention aims to solve problems that the consumption load is not matched with the output power of the pressure maintaining equipment, the pressure maintaining equipment is frequently started, stopped or loaded and unloaded, the abrasion consumption of equipment original parts is aggravated, the service life of the pressure maintaining equipment is influenced, energy loss is caused, and the system energy efficiency and economy are influenced.

Description

technical field [0001] The invention belongs to the field of industrial control, and in particular relates to a pressure maintenance system and an adaptive control method using variable frequency pressure maintenance equipment. Background technique [0002] In industrial control, there are many applications that require pressure maintenance systems. For example, the governor of the hydro-generator set adjusts the opening of the guide vane, the power and frequency of the unit, and the hydraulic system of the governor is required; Medium and low pressure gas systems are required for positive pressure systems, governor pressure oil tank supplementation, and air brake mechanical braking systems. Governor hydraulic systems and medium and low pressure gas systems are typical pressure maintenance systems. [0003] The pressure maintenance system is usually designed with multiple fixed oil pumps or air compressors of the same model and specification as the pressure maintenance equi...

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Problems solved by technology

[0004] In order to solve the above technical problems, the present invention provides a pressure maintenance system and an adaptive control method using frequency conversion pressure maintenance equipment, aiming at solving the problem of consumption load and pressure maintenance equipment The output power does not match, that is, the system pressure does not match the speed of the consumption drop and the pressurization capacity of the pressure maintenance equipment, that is, the system pressure does not match the consumption drop speed and the pressurization capacity of the pressure maintenance equipment: pressure maintenance equipment Frequent start and stop or loading and unloading, increased wear and tear of equipment components, affecting pressure to maintain equipment life, and causing energy loss at the same time, affecting system energy efficiency and economy, etc.

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