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Devices for emergency operation of actuators

A technology for actuators and hydraulic actuators, which is applied to parts of pumping devices for elastic fluids, fluid pressure actuators, safety devices, etc., can solve problems such as damage and stalling, and increase safety Effect

Active Publication Date: 2019-05-21
ANSALDO ENERGIA IP UK LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

As a result, the gas turbine will coast down with the variable inlet guide vanes of the compressor open, which has a high probability of stalling and, as a result, can cause severe damage to the compressor or other parts of the gas turbine

Method used

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  • Devices for emergency operation of actuators
  • Devices for emergency operation of actuators
  • Devices for emergency operation of actuators

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0023] exist Figure 1 to Figure 4b In the schematic hydraulic diagram of , examples of realization of the device for emergency operation of the hydraulic actuator 10 are shown in different operating states. For better understanding, the various active hydraulic lines are indicated in the figures with thicker lines and flow arrows.

[0024] exist figure 1 and figure 2 , an example of realization of the emergency device according to the invention is shown in normal operation, i.e. without any failure in the hydraulic system or with respect to the components of the device, where figure 1 shows the closed mode of normal operation of the hydraulic actuator 10, while figure 2 The opening mode of normal operation of the hydraulic actuator 10 is shown instead.

[0025] For normal operation and control of the hydraulic actuator 10, the device is provided with a proportional valve 1 installed in the hydraulic supply line 6 and in the hydraulic discharge line 7, which are respecti...

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PUM

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Abstract

A device for emergency operation of a pneumatic or hydraulic actuator having an operating cycle for normal operation of the actuator comprising at least one proportional valve for switching to said actuator and the different operating states of the relevant engine components, proportional valves are arranged in the supply line of pressurized liquid / gas and in the discharge line connected to the tank; and the control equipment, which is used for the operation control and monitoring functions, among them, the emergency cycle Connected to said operating cycle of said actuator, said emergency cycle is provided with: at least one solenoid valve for initiating an emergency operating pulse in the event of a detected fault; a plurality of pneumatic / hydraulic operated switching valve, which is activated by said pulse of the emergency signal from said solenoid valve; and wherein an emergency cycle is adapted to bypass said proportional valve and to block said actuator in its actual position in an emergency situation or force the actuator to a predetermined safety position.

Description

technical field [0001] The invention relates to a device for emergency operation of pneumatic or hydraulic actuators. Such hydraulic actuators are used, for example, for the operation of different engine components, for example for the actuation of variable inlet guide vanes of gas turbines. Background technique [0002] For the operation and control of such actuators, it is conventionally known to provide an operating cycle comprising at least one proportional valve for switching to different operating states of the actuator and associated engine components, wherein the proportional valve Arranged on the supply lines of pressurized liquid or gas and on the discharge lines connected to the tanks of the operating cycle, and in which control equipment is provided for different control and monitoring functions. During normal operation of such a hydraulic actuator, a proportional valve is used as a control device for switching the actuator, for example, from an open position of...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F04D29/56F04D29/46F01D17/26
CPCF01D17/16F01D21/00F02C9/20F04D29/563F15B20/002F15B20/008F05D2270/64F15B2211/8752F15B2211/862F15B2211/30565F04D27/0246F02C7/00
Inventor S·巴纳E·伯奇R·鲍尔
Owner ANSALDO ENERGIA IP UK LTD
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