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Controlling device and control method of gas turbine rotating speed

A gas turbine and control device technology, which is applied in the control of control devices and the field of gas turbine speed control devices, can solve the problems of frequency converter interference of speed signals and the inability of the controller to accurately measure the speed of gas turbines, etc., and achieve the effect of ensuring normal startup

Active Publication Date: 2012-06-13
AVIC PST NANFANG GAS TURBINE COMPLETE MFG & INSTALLATION
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  • Abstract
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  • Claims
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AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to provide a gas turbine speed control device and control method to solve the technical problem that the obtained speed signal is easily interfered by the frequency converter and the controller cannot accurately measure the gas turbine speed

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  • Controlling device and control method of gas turbine rotating speed
  • Controlling device and control method of gas turbine rotating speed
  • Controlling device and control method of gas turbine rotating speed

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Embodiment Construction

[0016] The embodiments of the present invention will be described in detail below with reference to the accompanying drawings, but the present invention can be implemented in many different ways defined and covered by the claims.

[0017] see figure 1 A preferred embodiment of the present invention provides a gas turbine speed control device for controlling the speed of a gas turbine 1 , which includes a speed measuring motor speed sensor 2 , a sound wheel speed measuring sensor 3 and a controller 4 .

[0018] The first end of the sound wheel speed measuring sensor 3 includes at least two probes, the first probe and the second probe are magnetically connected to the output shaft of the gas turbine 1, and are used to measure the speed signal of the gas turbine 1, and the other probes are used as spare probes. When the two probes connected between the sound wheel speed measuring sensor 3 and the output shaft of the gas turbine 1 are damaged, other probes can be used to replace t...

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Abstract

The invention provides a control device and a control method of gas turbine rotating speed. The control device comprises a velocity measurement motor rotating speed sensor, a phonic wheel velocity measurement sensor and a controller. The control method comprises the following steps: 1. a gas turbine is started; 2. two sensors detect three rotating speed signals and input the rotating speed signals into the controller; 3. a reference rotating speed is set in the controller, and the controller compares the rotating speed signals from the step 2 with the reference rotating speed to obtain a rotating speed of the gas turbine; and 4. the rotating speed of the gas turbine is used as a reference rotating speed of a next cycle, and the gas turbine is adjusted according to the rotating speed of the gas turbine. Reference rotating speed obtained by the control device is basically the same as an actual rotating speed of the gas turbine and can well reflect operating status of the gas turbine. Besides, according to the invention, the rotating speed signal can be transmitted to the controller accurately, so that the controller can accurately adjust and control the gas turbine; thereby, normal staring of the gas turbine can be guaranteed.

Description

technical field [0001] The present invention relates to the technical field of engines, in particular, to a control device for the speed of a gas turbine. In addition, the present invention also relates to a control method of the above-mentioned gas turbine rotational speed control device. Background technique [0002] When the gas turbine is started and ignited, the speed signal of the gas turbine is easily disturbed. Once the speed signal is disturbed, it is difficult to control accurately, which makes the start of the gas turbine difficult and the reliability of the normal operation of the gas turbine unit is poor. In order to ensure the normal starting and working stability of the gas turbine, it is necessary to control the speed of the gas turbine, and to control the speed generally first needs to measure the speed of the gas turbine. The original gas turbine start control device only installs a speed measuring motor speed sensor, and uses the speed measuring motor spe...

Claims

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Application Information

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IPC IPC(8): F02C9/00
Inventor 戴清波陈慈平魏宪行
Owner AVIC PST NANFANG GAS TURBINE COMPLETE MFG & INSTALLATION
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