초록 ▼

A rotary valve noise attenuator with a rotary ball control element and a noise attenuator member mounted in the ball having multiple, elongated, substantially enclosed channels formed across the valve opening to split the flow stream into several smaller flow streams. The channel walls are perforate

A rotary valve noise attenuator with a rotary ball control element and a noise attenuator member mounted in the ball having multiple, elongated, substantially enclosed channels formed across the valve opening to split the flow stream into several smaller flow streams. The channel walls are perforated so each smaller flow stream is further dispersed and diffused into many minute flow streams after entering the channel. A noise attenuator constructed of several corrugated sections fixed crest to crest to form several diamond shaped channels across the valve opening each having four side walls with holes.

대표청구항 ▼

A rotary valve noise attenuator device for fluid valves having a passageway for communicating a fluid flow stream through said valve, and a sealing member in said passageway, said rotary valve noise attenuator device comprising: a rotary ball fluid control member for rotatable mounting in said passa

A rotary valve noise attenuator device for fluid valves having a passageway for communicating a fluid flow stream through said valve, and a sealing member in said passageway, said rotary valve noise attenuator device comprising: a rotary ball fluid control member for rotatable mounting in said passageway adjacent said sealing member to control the flow stream through said passageway, said rotary ball fluid control member comprising a segmented ball having a ball sealing portion sealingly engageable with said sealing member corresponding to closing of said valve, and an opposite ball gap portion for selective insertion into the flow stream corresponding to selective opening of said valve; a noise attenuator member mounted in said ball gap portion for rotation therewith to progressively insert said noise attenuator member into the flow stream during opening of said valve, said noise attenuator member formed with a plurality of elongated, perforated channels extending across substantially said entire ball gap portion and said sealing member during opening of said valve, each channel having a front end and a rear end with a longitudinal axis extending through said front and rear ends and each channel formed with four side walls, at least two of said walls having perforations; said plurality of channels disposed and maintained in said ball gap portion with each of said longitudinal axes being parallel to each other and with said channel front ends rotatable into the flow stream during opening of said valve for initially receiving said flow stream; said channel front ends splitting said flow stream into several respective smaller flow streams and guiding said respective smaller flow streams into respective channels, and said smaller flow streams being dispersed through said perforated channels.