发明名称 |
COMPRESSOR AIR BLEED-OFF DEVICE |
摘要 |
air extraction for deicing or air conditioning systems of aircraft engines. SUBSTANCE: device used to bleed air off compressor of gas-turbine engine has case with two inlet pipe connections communicating with high- and low-pressure stages of compressor, respectively, and one outlet pipe connection communicating with air bleed-off system; case accommodates spring-loaded two-position cylindrical valve with cross diaphragm and supporting guides as well as two fixed pistons on either side of diaphragm to form double-space pneumatic cylinder together with valve. One of pistons is built integral with inlet pipe connection of high-pressure stage of compressor; abutting space of pneumatic cylinder communicates with pipe union of mentioned pipe connection. Second piston is built integral with pipe connection of low-pressure stage of compressor; pneumatic cylinder space abutting against this pipe connection communicates with pipe union of the latter; diaphragm is hermetically sealed and supporting guides are mounted on external surfaces of pistons. Control air is independently supplied to both spaces of pneumatic cylinder. Mechanical design of two-position valve provides for eliminating its wedging. EFFECT: improved efficiency due to reduced leakage of high-pressure air; improved reliability of device. 2 dwg
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申请公布号 |
RU2158853(C2) |
申请公布日期 |
2000.11.10 |
申请号 |
RU19980118751 |
申请日期 |
1998.10.13 |
申请人 |
OTKRYTOE AKTSIONERNOE OBSHCHESTVO "AVIADVIGATEL'" |
发明人 |
TIMOFEEV V.I.;MJALITSIN N.JU.;NAZAROV V.G.;POLUSHKIN V.M.;MELEKHIN S.A. |
分类号 |
F04D27/00;(IPC1-7):F04D27/00 |
主分类号 |
F04D27/00 |
代理机构 |
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