Damping impedance type pressure regulating device

Abstract

The invention discloses a damping impedance type pressure regulating device which comprises a water diversion pipe and a pressure regulating chamber communicated with the atmosphere. The bottom of the pressure regulating chamber is communicated with the water diversion pipe through a connection water way. A movable damping ball is arranged in the connection water way and limited and controlled through damping springs. The two end faces of the connection water way are provided with supporting frames. The centers of the two supporting frames are fixedly provided with a supporting sliding rod arranged along the longitudinal center of the connection water way. The supporting sliding rod penetrates through the center of the damping ball. The upper end face and the lower end face of the damping ball are provided with the damping springs. According to the damping impedance type pressure regulating device, an impedance porthole capable of adjusting the area and the damping coefficient in a bi-directional mode is designed, the functions that the water hammer pressure is lowered through the pressure regulating chamber, the unit operation performance is improved, and the impedance type pressure regulating chamber is fully utilized are achieved; it is proved by a model test that the device can achieve the function of blasting a membrane through a water hammer and is capable of lowering the water hammer pressure in a pressure pipe and capable of lowering the highest surge wave water level of the pressure regulating chamber, increasing the lowest surge wave water level of the pressure regulating chamber and improving the operation safety of the pressure regulating chamber.

Description

technical field [0001] The invention belongs to the technical field of water conservancy and hydropower system engineering and its system design technology, as well as the technical field of conveying fluid pipeline system equipment, in particular to the technical field of pipeline water hammer protection design, and specifically relates to a damping impedance type pressure regulating device. Background technique [0002] In the field of water transportation technology, the impact of pipeline water hammer on pipelines and related equipment cannot be ignored. [0003] At present, the most common pressure regulating devices of hydropower stations at home and abroad are various forms of surge chambers, and most of the pressure regulating devices of industrial pipelines and pumping station systems use pressure regulating tanks or pressure regulating valves. [0004] The design and use of surge chambers in hydropower stations have been quite mature and common. Conventional surge ...

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Problems solved by technology

[0005] The principle of "water hammer bursting membrane" is to install a diaphragm that can be ruptured under pressure at the weakest part of the pressure pipeline design. When the pressure pipeline is subjected to water hammer pressure, the diaphragm ruptures and discharges, thereby The increase of water hammer pressure is limited. The disadvantage of water hammer bursting membrane is that it needs to be replaced after rupture, and the impact of leakage must be considered, so it is rarely used except for some small hydropower stations.

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