公开(公告)号：WO1989008771A1

公开(公告)日：1989-09-21

申请号：PCT/FR1989000099

申请日：1989-03-09

Applicant: BERTIN & CIE ,  GRAS, François, Noël ,  FRIOU, Claude, Charles, Henri

Inventor： BERTIN & CIE

IPC: F01N01/24

CPC classification number: F01D25/02 ,  F01N1/082 ,  F01N2310/04 ,  F01N2310/14

Abstract: The silencer comprises a tubular envelope (7) supported by an end-piece (10) for fixture to a gas supply source in which the pressure is to be reduced. A perforated plate (8) and a disc (9) close off the ends of the envelope which is drilled with escape apertures (13, 13', 13''...) in the region of the disc (9). According to the invention, the gas flows at sonic speed through the plate (8) to enter the envelope (7) which is completely filled with a packing (14) consisting of a tightly-wound roll of wire mesh. Said packing absorbs the shock waves developed by the supersonic flow of the gas in the packing. The latter maintains a subsonic flow with a low noise level upstream of the silencer. Application to the treatment of a surface by blasting of a gas flow.

Abstract translation: 消声器包括由端部件（10）支撑的管状外壳（7），用于将固定件固定到气体供应源中，在该气体供应源中压力将被减小。 一个多孔板（8）和一个盘（9），封闭了封套的端部，在盘（9）的区域中钻出有排出孔（13,13'，13“）。 根据本发明，气体通过板（8）以声速流动，进入完全填充有由紧密卷绕的丝网组成的填料（14）的封套（7）。 所述包装吸收由包装中的气体的超音速流引起的冲击波。 后者保持在消音器上游具有低噪声电平的亚音速流。 应用于通过喷射气流来处理表面。