Hydraulic control ball valve system and control method

Abstract

The invention belongs to the technical field of pipeline valves, and particularly relates to a hydraulic control ball valve system and a control method. The hydraulic control ball valve system comprises an eccentric ball valve, a hydraulic station and a control cabinet, and the hydraulic station comprises oil cylinders, an oil supplement pump, an energy accumulator, a first electromagnetic valve,a second electromagnetic valve, a third electromagnetic valve, a fourth electromagnetic valve, a fifth electromagnetic valve and a sixth electromagnetic valve. According to the hydraulic control ballvalve system and the control method, the adopted eccentric ball valve is improved on the basis of a full-bore eccentric ball valve, the characteristic that the hydraulic loss of the full-bore eccentric ball valve is zero is inherited firstly, in addition, the abrasion is small, and the service life is long; and then a set of intelligent hydraulic control system (namely the control cabinet and thehydraulic station) is additionally arranged, and through the design of the excellent hydraulic control system and an intelligent control system, the effect of completely eliminating the water hammer can be achieved.

Description

technical field [0001] The invention belongs to the technical field of pipeline valves, and in particular relates to a hydraulic control ball valve system and a control method. Background technique [0002] There are two main types of check valves used in traditional pumping stations: one is a water pump control valve that is hydraulically controlled, and the other is a hydraulically controlled (hammer) butterfly valve that is controlled by a hydraulic system. Although these two types of valves both have two-stage fast and slow closing and have the function of eliminating part of the water hammer, they have the following disadvantages: [0003] 1. Poor adaptability, not smart enough, greatly affected by the pipeline load, the valve law varies greatly under different load conditions, and cannot completely eliminate the water hammer (water hammer when the valve is opened, water hammer when the valve is closed, and water hammer when the pump stops due to accidents) . [0004]...

AI Technical Summary

Problems solved by technology

[0003] 1. Poor adaptability, not smart enough, greatly affected by the pipeline load, the valve law varies greatly under different load conditions, and cannot completely eliminate the water hammer (water hammer when the valve is opened, water hammer when the valve is closed, and water hammer when the pump stops due to accidents)

[0004] 2. The hydraulic loss is large. Due to the complex flow path of the water pump control valve, the general hydraulic loss is 3-5m under normal water delivery speed; the smaller the caliber of the hydraulic control butterfly valve, the greater the hydraulic loss, and the hydraulic loss of small and medium caliber (below DN1800) is generally 0.4 ~1m, so it is generally only used in large-diameter water pipelines

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