| 摘要 |
<p>1,142,727. Deflecting propulsive jets. M.A.N. TURBO G.m.b.H. 22 June, 1966 [24 June, 1965], No. 27889/66. Heading B7G. [Also in Division F2] A rotary conical valve for a gas turbine engine directs the gas from an inlet 3 to one or other or both of two outlets 4, 5. The valve member is constructed with circular end members 10, 12 joined by two straight inclined walls 13 at opposite sides. A third wall 14 joins the two side walls at portions 15 which seal on strips 16 of the casing. The fourth side of the plug in the position shown is open to the outlet 5. A cascade of hollow guide blades 17 allows the pressure to equalize on the outer sides of the walls 13, there being a balance chamber 21 on one side. Pressures on the wall 14 are also equalized through a passage 20 and a balance chamber 22. There are further balance chambers 24, 27 at opposite ends of the valve member, which communicate with the flow passage. The diameter of the operating stub shaft at the top may be varied to adjust the balancing so that the valve is seated by the fluid pressure. Operation of the shaft may first raise the valve member from its seat before turning it. In a modification, Figs. 6 to 8 (not shown), the valve has two outlets (30) inclined at an acute angle in axial direction and a third outlet (31) provided with guide vanes 32.</p> |
