Double-main-control-valve integrated jet pipe servo valve

A servo valve and dual master control technology, applied in the field of servo valves, can solve the problems of system inability to guarantee stability and fault sensitivity, and achieve the effects of small control resistance, consistent flow output characteristics, and strong mechanical maneuverability

Active Publication Date: 2017-05-31
SHANGHAI HENGTUO HYDRAULIC CONTROL TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, in the servo system, aerospace or aviation system, it is more sensitive to failures caused by various reasons, and these failures often make the system unable to guarantee reliable stability

Method used

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  • Double-main-control-valve integrated jet pipe servo valve
  • Double-main-control-valve integrated jet pipe servo valve
  • Double-main-control-valve integrated jet pipe servo valve

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Embodiment Construction

[0027] The present invention will be further described in detail below through specific examples.

[0028] see Figure 1~Figure 5 , the dual main control valve integrated jet pipe servo valve (hereinafter referred to as the integrated servo valve) of the present invention includes two two-stage servo valves A1-1 controlled by independent hydraulic fluids, two-stage servo valves B1-2, spool coupling Device 3, clamping screw 4. from figure 2 It can be seen that the two-stage servo valve A1-1 and the two-stage servo valve B1-2 connect the two spools A, B5-1, and 5-2 through the coupling 3 to form an integrated servo valve. A mechanical control interface is reserved, and if both the two-stage servo valve A1-1 and the two-stage servo valve B1-2 are in a fault state, the integrated servo valve is controlled through the mechanical control interface. The control pressure output ports AC1 and AC2 of the two pilot stage components 6-1 in the two-stage servo valve A1-1, the pressure ...

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Abstract

The invention relates to a double-main-control-valve integrated jet pipe servo valve. Two valve elements of two two-level servo valve bodies are connected through a coupling to form the integrated servo valve. Two pilot-level assemblies are symmetrically installed on the two-level servo valve bodies. Each pilot-level assembly is composed of a torque motor, a spray nozzle, a receiver and a feedback rod. Oil sources of the pilot-level assemblies of the two two-level servo valves are main standby oil sources which are mutually independent. Four fluid channels reserved in a valve body communicate with control pressure oil output by the two receivers in the two pilot-level assemblies. The feedback rods and the valve elements constitute a force feedback system. When the pressure values of the four fluid channels are unequal correspondingly, the electrical channel of the corresponding two-level servo valve body is isolated from a pilot-level hydraulic channel, an electrical channel of the two-level servo valve body in the normal state is made to communicate with the pilot-level hydraulic control oil channel. The double-main-control-valve integrated jet pipe servo valve is used as an important hydraulic control element in a redundancy high-performance actuation system and has the features of four electrical redundancies and two hydraulic redundancies and the mechanical backup capacity.

Description

technical field [0001] The invention relates to a dual main control valve integrated jet pipe servo valve, in particular to a servo valve which plays the role of electro-hydraulic conversion and power amplification in a redundant high-performance actuating system. Background technique [0002] Today's fluid power control systems have multi-oil circuit control characteristics to apply to different extremely important and high-reliability working conditions, such as electro-hydraulic servo control actuators in aviation systems. In such a system, redundant mechanical connections, joysticks, etc., between the control pumping station and the control actuator can be avoided, since these connections have some flexibility and may distort the input signal, and when rapidly changing signals need to be transmitted , the quality of these redundancies may be a factor. The current aircraft are controlled by electro-hydraulic servo system, they need to maintain relative stability during t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F15B13/043
CPCF15B13/0431
Inventor 王思民金瑶兰渠立鹏杨文广谢作建
Owner SHANGHAI HENGTUO HYDRAULIC CONTROL TECH
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