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Synchronous Ring Mechanism for Mode Switching Valve of Variable Cycle Engine

A variable cycle engine, mode conversion technology, applied in the direction of machine/engine, mechanical equipment, gas turbine device, etc., can solve the problems of difficult design, complex force direction, etc., to achieve convenient structural processing, low friction, easy installation. Effect

Active Publication Date: 2016-06-29
BEIHANG UNIV +1
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  • Abstract
  • Description
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  • Application Information

AI Technical Summary

Problems solved by technology

This structure can ensure the synchronization of the movement of the connecting rod, so that the force on the connecting rod and the valve plate is even, but its disadvantage is that the direction of the force is complicated and the design is difficult

Method used

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  • Synchronous Ring Mechanism for Mode Switching Valve of Variable Cycle Engine
  • Synchronous Ring Mechanism for Mode Switching Valve of Variable Cycle Engine
  • Synchronous Ring Mechanism for Mode Switching Valve of Variable Cycle Engine

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Embodiment Construction

[0035] The present invention is mainly aimed at the multi-plan design of the synchronous ring mechanism of the existing variable cycle engine mode switching valve. The structure of the existing mode switching valve and the position of the synchronous ring are as follows: figure 1 , 2 As shown: the mode switching valve is located at the entrance of the engine outer culvert, which consists of: front section of outer casing 1, rear section of outer casing 2, valve plate 3, sealing ring 4, connecting rod 5, synchronous ring 6, front sealing air casing 7. It is composed of rear sealing air casing 8, synchronous ring guide rail 9, actuator cylinder 10, synchronous ring guide groove 11 and so on.

[0036] The realization form of the overall structure and function is: the actuator cylinder 10 is installed on the rear section 2 of the outer casing, and the actuator slide rod is moved back and forth in the actuator cylinder through precise control of the oil pressure, thereby driving th...

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Abstract

The invention relates to a synchronous ring mechanism of a mode switch valve of a variable-cycle engine and belongs to the technical field of high-performance gas turbine engines in the aerospace technique. A mode switch valve mechanism is used for changing the work state of the engine to adapt various flight conditions. The mode switch valve is arranged at the outlet of an outer duct of the engine and comprises a front section of an outer case, a rear section of the outer case, a valve sheet, a seal ring, a connecting rod, a synchronous ring, a front gas seal case, a rear gas seal case, a synchronous ring guide rail, an actuating cylinder and a synchronous ring guide groove. The synchronous ring mechanism of the mode switch valve of the variable-cycle engine mainly aims at the synchronous ring which moves axially along the engine under the actuation of the actuating cylinder and the motion of the synchronous ring is matched with the front section of the outer case. The invention provides four different synchronous ring structure schemes which are all capable of realizing motion function.

Description

technical field [0001] The invention relates to a synchronous ring mechanism for a mode switching valve of a variable cycle engine. The synchronous ring can move along the axial direction of the engine to drive other parts to move, thereby changing the working state of the engine to adapt to different flight conditions. It belongs to the high performance in aerospace technology. Gas turbine engine technology field. Background technique [0002] The variable cycle engine is a propulsion system with excellent comprehensive performance. It integrates the supersonic performance of the turbojet engine and the subsonic performance of the turbofan engine into one engine. Compared with the traditional turbofan engine with small bypass ratio , the variable cycle engine shows great potential in performance when completing difficult mixing tasks. [0003] The adjustable mechanism of the modern typical variable cycle jet engine mainly includes three parts: the mode switching valve, the...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F02C9/00
Inventor 王焱飞樊江李姣梅文斌毛建兴
Owner BEIHANG UNIV
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