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    • 1. 发明公开
    • RADIAL TURBOMACHINE WITH AXIAL THRUST COMPENSATION
    • EP3436666A1
    • 2019-02-06
    • EP17722154.6
    • 2017-03-29
    • Exergy S.p.A.
    • SPADACINI, ClaudioRIZZI, Dario
    • F01D1/06F01D3/00F01D5/04
    • F01D5/048F01D1/06F01D3/00F01D3/02F01D5/041F01D11/001
    • The present invention relates to a radial turbomachine with axial thrust compensation, comprising: a fixed casing (3); a plurality of main concentric bladed rings (9′,9″,9′″,9″″) arranged in the fixed casing (3) around a central axis (X-X); a plurality of concentric auxiliary bladed rings (15′, 15″, 15′″) arranged in the fixed casing (3) around the central axis (X-X) and radially alternated with the main bladed rings (9′,9″,9′″,9″″). A rotor (2, 2′) comprising a rotor disc (6, 6′) and a rotation shaft (4, 4′, 4″) integral with the rotor disc (6, 6′) is rotatable in the fixed casing (3) around the central axis (X-X) and carries, on a front face (7, 7′), the main bladed rings (9′,9″,9′″,9″″). The main (9′,9″,9′″,9″″) and auxiliary (15′, 15″, 15′″) bladed rings delimit, with the rotor disc (6, 6′), a plurality of concentric front main chambers (30, 33, 35, 36) at different pressures. A plurality of concentric rear annular main chambers (41′,41″,41′″,41″″), each in fluid communication with a respective front main chamber (30, 33, 35, 36) and at the same pressure as the respective front main chamber (30, 33, 35, 36), is delimited between a rear face (8, 8′) of the rotor disc (6, 6′) and the fixed casing (3). A rear annular area (A_1p, A_2p, A_3p, A_4p, A′_4p) of the rotor disc (6, 6′) delimiting one of the rear annular main chambers (41′,41″,41′″,41″″) is equal to or substantially equal to a front area (A_1f, A_2f, A_3f, A_4f) of the rotor disc (6, 6′) delimiting a respective front main chamber (30, 33, 35, 36), so that the force exerted by the pressure of the working fluid in each rear annular main chamber (41′,41″,41′″,41″″) substantially balances the force exerted by the pressure of the working fluid in the respective front main chamber (30, 33, 35, 36).
    • 8. 发明公开
    • Anti-contamination thrust balancing system for gas turbine engines
    • Kontaminationsfreies SchubausgleichsystemfürGasturbine。
    • EP0657623A1
    • 1995-06-14
    • EP94309045.6
    • 1994-12-06
    • UNITED TECHNOLOGIES CORPORATION
    • Mize, Christopher DPirsig, William W.Vercellone, Peter T.
    • F01D5/08
    • F01D5/081F01D3/00F05D2260/607Y02T50/672Y02T50/676
    • A buffer zone (56) disposed between the TOBI discharge cavity (50) and the forward rotor cavity (42) of a gas turbine engine serves to maintain the TOBI air relatively pollutant free by judiciously controlling the flow to maintain the pressure of the buffer cavity (56) below the adjacent cavities. The buffer cavity air and the forward rotor cavity air are bled to the dead rim area (90) of the turbine rotor disk (44) through tangentially oriented discharge ports (88) formed in the circumferentially spaced plenums (80) formed in the stator support. Plates (82) on the bottom of some of the plenums (80) block off the flow from the forward rotor cavity (42) and buffer air from the buffer cavity (56) flows through these closed off plenums (80) through openings (84) to maintain the proper pressure relationship amongst the cavities.
    • 设置在TOBI(切向车载喷射器)排出腔和燃气涡轮发动机的前转子腔之间的缓冲区用于通过明智地控制流量来保持TOBI空气相对无污染物的空气,以将缓冲腔的压力维持在 相邻的腔。 缓冲腔空气和前转子空腔空气通过形成在形成在定子支撑件中的周向隔开的通气室中的切向定向的排出口而被排放到涡轮转子盘的死角区域。 一些增压室底部的板阻挡了从前转子空腔的流动,并且来自缓冲空腔的缓冲空气流过这些关闭的通风室,以保持空腔之间适当的压力关系。