Multi-column inlet guide vane/variable stator vane split type combined regulation and control rule design method for multistage axial flow compressor of ship gas turbine
An axial flow compressor and gas turbine technology, applied in mechanical equipment, machine/engine, pump control, etc., can solve problems such as the increase in quantity and the difficulty of joint control and regulation of the design of the law, so as to reduce the consumption of resources and time, and simplify the work of designers. the effect of improving the surge margin index
Active Publication Date: 2021-03-12
中国船舶重工集团公司第七0三研究所
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At the same time, with the gradual increase in the number of transduction / stationary vane rows and the increasingly flexible regulation of transduction / stationary vanes, the number of angle combination schemes between multiple transduction / stationary vanes increases sharply, which gives the compressor Multi-column transducible / stationary blade joint control rotation angle design brings greater difficulty and challenge
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[0037] The present invention is described in more detail below in conjunction with accompanying drawing example:
[0038] combine Figure 1-2 , a specific implementation of the multi-row transducible / stator vane split joint control law design method for a multi-stage axial flow compressor of a marine gas turbine is realized by the following steps:
[0039] Step 1: Select the position of the average radius along the height of the blade as the characteristic section for the calculation of the transducible / stator blade rotation angle, and the average radius value can be calculated by the arithmetic mean method or the area weighted mean method;
[0040] Step 2: Extract the main aerodynamic parameters at the characteristic cross-section position of the first-stage rotor blade at the inlet of the compressor at the design point (at this time, all transducible / stator blade rotation angles are 0°), including: inlet axial velocity C 1a , peripheral speed U, inlet absolute airflow angle...
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The invention aims to provide a multi-column inlet guide vane / variable stator vane split type combined regulation and control rule design method for a multistage axial flow compressor of a ship gas turbine. The method comprises the following steps of: extracting aerodynamic parameters at the characteristic section position of a first-stage moving vane at an inlet of the gas compressor, and calculating the aerodynamic parameters of the inlet of the first-stage moving vane at a reduced rotating speed; solving the rotation angle of the inlet guide vane at the reduced rotation speed; taking the angle as a reference standard rotation angle, enabling the rotation angle of each column of inlet guide vanes in the action process to be in regular relationship with the component formula of the inletguide vanes, and solving the rotation angle value of each column of inlet guide vanes; and calculating the rotation angle of each column of inlet guide vanes / variable stator vanes at each characteristic reduced rotation speed to obtain the rotation angle of each column of inlet guide vanes / variable stator vanes of the gas compressor at different reduced rotation speeds, thereby designing a multi-column inlet guide vane / variable stator vane split type combined regulation and control rule of the gas compressor. By means of the method, the multi-column inlet guide vane / variable stator vane splittype combined regulation and control corner rule can be rapidly obtained, and the surge margin index of the gas compressor under the low working condition can be improved.
Description
technical field [0001] The invention relates to a design method of a gas turbine, in particular to a design method of a ship gas turbine compressor. Background technique [0002] As one of the three most important core components of a marine gas turbine, the compressor's technical performance and reliability directly affect the realization of the safety and economic indicators of a marine gas turbine. In order to adapt to the technical and tactical requirements during the ship's navigation, the ship's gas turbine must be able to operate efficiently with a margin under low working conditions while ensuring the performance of the design point. The operating characteristics under such a wide range of variable working conditions make the stability of gas turbines in low working conditions very prominent when they are used as propulsion or power generation in ship power systems, and often become the limiting bottleneck of unit performance, which has great impact on ship gas turbi...
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IPC IPC(8): G06F30/17F04D27/02
CPCG06F30/17F04D27/0246
Inventor 王琦徐文燕任兰学王廷张舟洪青松李冬万新超
Owner 中国船舶重工集团公司第七0三研究所