Anti-surge control method based on anti-surge control system
A control system and anti-surge technology, which is applied in the general control system, control/regulation system, program control, etc., can solve the problems of inaccurate flow parameters, space occupied by flowmeters, and impossibility of realization, so as to eliminate inaccurate flow parameters , reduce failure points, reduce the effect of layout space
Active Publication Date: 2015-10-07
SHENYANG BLOWER WORKS GRP AUTOMATIC CONTROL SYST ENG
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Problems solved by technology
However, because the flowmeter usually requires a long straight pipe section, it cannot be realized in many sites
In addition, the flowmeter not only occupies the space required for fan layout, but also requires corresponding material resources and construction manpower. If the flowmeter is not installed properly, the flow parameters will be inaccurate, which will lead to unit operation problems.
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[0033] see figure 1 , an anti-surge control system for a GM blower without a flowmeter in a sewage treatment plant provided by an embodiment of the present invention includes a fan inlet temperature monitoring module (i.e. figure 1 Platinum thermal resistance TE110 in the middle), fan outlet pressure monitoring module (ie figure 1 Pressure transmitter PT11), anti-surge valve 2, first control module FIC110, second control module TISA110, first positioner FZT11, second positioner PZT110 and inlet guide vane electric actuator 1.
[0034] The pressure transmitter PT11 monitors the outlet pressure of the fan, and transmits the monitored pressure signal to the first control module FIC110. The initial setting value of the fan outlet pressure pressure change rate is ±100mbar / 100ms. The platinum thermal resistance TE110 is used to monitor the inlet temperature of the fan, and transmit the monitored temperature signal to the second control module TISA110.
[0035] The first control m...
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The invention discloses a control method based on an anti-surge control system. The control method comprises steps: a pressure of an outlet of a blower fan is monitored and the monitored pressure signal is sent to a first control module; a temperature of an inlet of the blower fan is monitored, and the monitored temperature signal is sent to a second control module; whether a set surges is determined according to jumping times of the monitored pressure in the prescribed time, when surge is determined, a first positioner, a second positioner, an inlet guide vane electric execution mechanism and an anti-surge valve are controlled to carry out anti-surge control; whether surge happens is determined according to the risen degrees of the monitored temperature in the prescribed time, when surge is determined, the first positioner, the second positioner, the inlet guide vane electric execution mechanism and the anti-surge valve are controlled to carry out anti-surge control. In the method, through monitoring and control of the pressure of the outlet of the blower fan and monitoring and control of the temperature of the inlet of the blower fan, anti-surge control is carried out precisely and effectively, and fault points are reduced.
Description
technical field [0001] The invention relates to the field of sewage treatment control, in particular to an anti-surge control method based on an anti-surge control system. Background technique [0002] In the past, the unit control system used the dual-parameter function control of the flow and outlet pressure calculated by the flowmeter. When the unit was close to the surge state, the flow-pressure of the unit was guaranteed to operate in a safe area by adjusting the anti-surge valve. But because the flow meter usually needs a long straight pipe section, it cannot be realized in many sites. In addition, the flowmeter not only occupies the space required for fan layout, but also requires corresponding material resources and construction manpower. If the flowmeter is not installed properly, the flow parameters will be inaccurate, which will lead to unit operation problems. Contents of the invention [0003] The technical problem to be solved by the present invention is to ...
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Login to View More IPC IPC(8): G05B19/418
CPCG05B19/41865
Inventor林乐李崇张颖贾超
OwnerSHENYANG BLOWER WORKS GRP AUTOMATIC CONTROL SYST ENG