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Three-channel combustion gas turbine liquid fuel metering method and device thereof

A technology of gas turbine and liquid fuel, which is applied in the direction of turbine/propulsion fuel delivery system, fuel control of turbine/propulsion device, charging system, etc., and can solve the problem of low reliability of fuel metering device

Active Publication Date: 2014-07-02
CAS HEFEI MICRO GAS TURBINE RES INST CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In order to solve the problem of low reliability of the gas turbine fuel metering device, the present invention further proposes a main backup three-channel fuel metering method and device, and the technical solution of the invention includes a linear metering method, a three-channel metering device and a three-channel metering control method

Method used

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  • Three-channel combustion gas turbine liquid fuel metering method and device thereof
  • Three-channel combustion gas turbine liquid fuel metering method and device thereof
  • Three-channel combustion gas turbine liquid fuel metering method and device thereof

Examples

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Effect test

Embodiment 1

[0046] The connection method is as Figure 1-2 As shown, the control principle is as image 3 shown. In this implementation method, the main metering valve and the main differential pressure return valve work. The implementation process includes centrifugal pump 1, gear pump 2, safety valve 3, differential pressure return valve reversing valve 4, differential pressure return reversing control signal 5, metering valve reversing control signal 6, metering reversing valve 7, main fuel Metering displacement sensor 8, main fuel metering displacement detection signal 9, main fuel metering servo motor control signal 10, main fuel metering servo motor 11, main differential pressure return valve 16, A channel flow meter 18, pressure limiting valve 20, E channel pressure The sensor 21, the return path pressure sensor 23 and the main metering valve 24 work. It can realize fuel metering A channel and differential pressure return E channel.

Embodiment 2

[0048] The connection method is as Figure 1-2 As shown, the control principle is as image 3 shown. In this implementation method, the main metering valve and the backup differential pressure return valve work. The implementation process includes centrifugal pump 1, gear pump 2, safety valve 3, differential pressure return valve reversing valve 4, differential pressure return reversing control signal 5, metering valve reversing control signal 6, metering reversing valve 7, main fuel Metering displacement sensor 8, main fuel metering displacement detection signal 9, main fuel metering servo motor control signal 10, main fuel metering servo motor 11, backup differential pressure return valve 17, A channel flow meter 18, pressure limiting valve 20, F channel pressure The sensor 22, the return path pressure sensor 23 and the main metering valve 24 work. It can realize fuel metering A channel and differential pressure return F channel.

Embodiment 3

[0050] The connection method is as Figure 1-2 As shown, the control principle is as image 3 shown. In this implementation method, the backup metering valve and the main differential pressure return valve work. The implementation process includes centrifugal pump 1, gear pump 2, safety valve 3, differential pressure return valve reversing valve 4, differential pressure return reversing control signal 5, metering valve reversing control signal 6, metering reversing valve 7, backup fuel Metering servo motor control signal 12, backup fuel metering displacement detection signal 13, backup fuel metering servo motor 14, backup fuel metering displacement sensor (LVDT) 15, main differential pressure return valve 16, B channel flowmeter 19, pressure limiting valve 20, The pressure sensor 21 of the E channel, the pressure sensor 23 of the return channel and the backup metering valve 25 work to realize the fuel metering of the B channel and the differential pressure backflow of the E ...

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Abstract

The invention discloses a three-channel gas turbine liquid fuel metering method and device, which is especially suitable for ground gas turbines, aircraft engines and other power devices that require high fuel metering reliability. It is characterized in that: the device adds mechanisms such as backup fuel metering, backup differential pressure return and fault detection and reversing. When the gas turbine is working, the gas turbine control unit VII starts the main / backup / The main backup differential pressure return passage works, thereby improving the reliability of the return passage; the gas turbine control unit VII starts the work of the fuel metering main / backup / main backup passage through the reversing valve according to the measurement value of the metering passage flowmeter, so as to realize the improvement Metering path reliability. The device in the invention adopts the main and backup three-way structure and the mutual switching function of the three-way working states, which improves the reliability of fuel metering and has wide application value.

Description

technical field [0001] The present invention mainly relates to a liquid fuel metering control method and device, in particular to a method and device for controlling gas turbine fuel backflow and metering passage, especially suitable for ground gas turbines, aircraft engines and other fuel metering reliability requirements in the power unit. Background technique [0002] The reliability of the gas turbine control system is mainly determined by the reliability of the control unit and fuel metering device. In recent years, the application of redundant digital control technology and the successful development of multi-channel full-authority digital control unit have greatly improved the reliability of the gas turbine control system. However, the current single-channel fuel metering device hinders the further improvement of the reliability of the gas turbine control system, and the present invention is proposed under this background. [0003] The fuel metering device uses the d...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F02C9/32
Inventor 谭春青曾德堂袁怡祥谢鹏福赵洪雷张永军高庆陈海生
Owner CAS HEFEI MICRO GAS TURBINE RES INST CO LTD
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