SU557208A1 - Electro-hydraulic remote drive - Google Patents

Description

(54) ELECTRO-HYDRAULIC REMOTE DRIVE

one

This invention relates to electro-hydraulic drives for controlling gas turbine engines.

Known electro-hydraulic remote drives, containing the main caval control, performed in the form of a logic unit connected to the main electro-hydraulic distributor, in parallel with which are connected the back channels. However, in known devices, backup power sources and distributors in the main and backup channels are not ensured, which reduces the reliability of the drive 1.

The aim of the invention is to increase the reliability of the drive.

To do this, in the drive one of the backup channels is made in the form of push-button contactors connected on the one side to the backup power source, and on the other to the backup electro-hydraulic distributor, and connected with the aid of the logical element OR and the storage unit with the logic elements AND, included between logical block

and the main electro-hydraulic distributor.

The drawing shows a functional diagram of the drive.

The gas turbine engine 1 is kinematically connected with the actuator 2 connected by hydraulic channels to the electro-hydraulic distributor 3.

The sensor 4 of the operating modes of the engine 1 and the feedback sensor 5 of the tracking control channel are connected to the inputs of logic unit 6. The feedback sensor 5 is kinematically connected with the output of the actuator 2. The outputs of logic unit 6 are using interlocking logic elements I 7 and 8 are connected to the windings of the electro-hydraulic distributor 3.

In the hydraulic channel between the actuator 2 and the electro-hydraulic distributor 3, a hydraulic throttle 9 is turned on, controlled by the speed of the mechanism 2. The electro-hydraulic distributor 10 reserGhHoro kangsha is connected by hydraulic channels to the actuator 2 in parallel to the distributor 3 between the throttle 9 and the mechanism 2.

Push-button contactors 11 and 12 of the engine 1 of the backup control channel, made in the form of push-button contactors, are connected to the backup power source 13 using the switch 14 and to the windings of the distributor 10. Parallel to the windings of the distributor 10, the button-type contactors 11 and 12 are connected using an OR 15 logic element to the storage unit 16, the output of which is connected to the inverse inputs of logic elements And 7 and 8. The reset input of the storage unit 16 is connected to the switch 14. In the hydraulic channels between Hydraulic distributor 10 and mechanism 2 include a hydraulic throttle 17 with a non-return valve 18 connected in parallel with it and a hydraulic throttle 19 with a similarly turned on valve 20 regulating the speed at which mechanism 2 is operated. The drive operates as follows. When the motor 1 is controlled by the following channel. The control signals from the setting device 4 and the feedback sensor arrive at the inputs of the logic unit 6. If there is a mismatch between these signals, which exceeds the dead zone of the tracking channel, the output of the logic unit 6 appears input to the logic element And 7 or 8. In the absence of the inverted inputs of the elements And 7 and 8 signal from the output of the storage unit 16, from the output of the element 7 and 8, the signal she comes the appropriate winding distribute; w 3. R spredelitel 3 supplies the working xi | the bone through the choke 9 into the corresponding cavity of the mechanism 2, which acts on the control body of the engine 1 and simultaneously on the feedback sensor 5, while the signals from the sensor 4 and the sensor 5 at the inputs of block 6 do not match. When the control channel is out of service, the operator controls the motor 1 by means of push-button contactors 11 and 12 connected to the backup power source 13 by closing the switch 14.

When you click on the contactor 11 or 12, the signal from its output goes to the corresponding winding of the distributor 10 (when you press both the clamps, they de-energize each other). The distributor Yu supplies the working fluid through the throttle 17 or 19 to the mechanism 2, which acts on the body regulating the operating mode of the engine 1. Another choke 19 or 17 is shunted by a non-return valve 20 or 18.

Claims (1)

At the same time, when pressing the closure switch 11 or 12, the OR 15 element sends a signal to the input of the storage unit 16, from the output of which a signal is sent to the inverted inputs And 7 and 8, blocking the operation of the tracking channel. Translation of the storage unit 16 to the initial position and unblocking of the tracking channel is performed by applying a signal to the input of the unit 16 from the switch 14 when the power supply of the backup channel is disconnected. When using an electro-hydraulic remote drive, its operational reliability is significantly increased. Electro-hydraulic remote drive, mainly for gas-turbine engines, containing main control channels made in the form of a logic unit connected to the main electro-hydraulic distributor, in parallel which backup channels are connected, which, in order to increase reliability, at least one of the jje3ejs ) BHbix channels are made in the form of push-button contactors connected on the one hand to the backup power supply, and on the other to the backup power supply ravlicheskomu distributor and connected by means of the OR gate and the memory block p logical elements AND, vklk chennymi between logical unit and the main electrohydraulic valve. Sources of information taken into account in the examination: 1. Japan patent No. 49-18678 Cl. 54 (8) D, publ. 1974.