Anti-surge control method for single-stage high-speed centrifugal compressor
A high-speed centrifugal, control method technology, used in pump control, mechanical equipment, machine/engine, etc.
Active Publication Date: 2021-11-30
上海电气鼓风机厂有限公司
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[0005] The purpose of the present invention is to provide an anti-surge control method for a single-stage high-speed centrifugal compressor. It proposes a combination of pulsating pressure and a conventional five-parameter method, which can control more accurately, reliably and quickly, and solves the problem of the existing single-stage high-speed centrifugal compressor. Problems Existing in Machine Anti-Surge Control
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[0029] The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments.
[0030] Please see attached figure 1 , an anti-surge control method for a single-stage high-speed centrifugal compressor, installing an inlet temperature sensor 2 and an inlet pressure sensor 3 at the inlet of the single-stage high-speed centrifugal compressor 1, and installing an inlet temperature sensor 3 at the outlet of the single-stage high-speed centrifugal compressor 1 The outlet temperature sensor 4, the outlet pressure sensor 5 and the auxiliary outlet pressure sensor 6, the regulating valve 8 is connected between the inlet and outlet of the single-stage high-speed centrifugal compressor 1, and the flow rate is installed between the regulating valve 8 and the inlet of the single-stage high-speed centrifugal compressor 1 Meter 7, inlet temperature sensor 2, inlet pressure sensor 3, outlet temperature sensor 4, outlet pressure sensor 5, a...
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The invention discloses an anti-surge control method for a single-stage high-speed centrifugal compressor, which includes setting the inlet flow HC of the compressor as the X axis, and the inlet and outlet pressure ratio P D / P S As the Y axis, draw a performance curve according to the performance parameters of the single-stage high-speed centrifugal compressor; Step 2: Run the single-stage high-speed centrifugal compressor, and compare the current operating point with the performance curve, and the operating point is located at the surge boundary line On the left side, quickly open the regulating valve and trigger the protective measures of the unit; the operating point is located between the surge boundary line and the anti-surge line, and the control system controls the regulating valve according to the change range of the outlet pulsating pressure; the operating point is located between the anti-surge line and the anti-surge line. Between the surge alarm lines, the control system controls the regulating valve according to the variation range of the outlet pulsation pressure; the operating point is located on the right side of the surge alarm line, and the single-stage high-speed centrifugal compressor operates normally. The control of the invention is more accurate, more reliable and faster, and solves the problems existing in the anti-surge control of the existing single-stage high-speed centrifugal compressor.
Description
technical field [0001] The invention relates to a control method of a turbomachinery, in particular to an anti-surge control method of a single-stage high-speed centrifugal compressor. Background technique [0002] As a kind of impeller machinery, single-stage high-speed centrifugal compressor is widely used in various industrial fields. It is responsible for the important task of maintaining the process and providing energy. It is the "heart" equipment of the industrial process. Due to the instantaneous change of process parameters such as gas pressure and flow in the production process, the gas is blocked, which causes drastic changes in the process parameters of the inlet and outlet of the compressor, and the parameters such as the vibration shaft temperature of the compressor body will also change greatly. This is the surge of the compressor. Phenomenon. [0003] The damage caused by surge is very serious, and it may cause major accidents such as fracture of compressor ...
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IPC IPC(8): F04D27/02F04D17/10
CPCF04D17/10F04D27/001F04D27/02F04D27/0253F04D27/0292
Inventor 赵法超
Owner 上海电气鼓风机厂有限公司