Device for controlling fast cooling of cylinder of steam turbine and method therefor
A rapid cooling and control device technology, applied to mechanical equipment, engine components, machines/engines, etc., can solve problems such as long cylinder temperature drop time, and achieve reliable control and operation
Active Publication Date: 2014-12-24
ZHENJIANG COLLEGE
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Problems solved by technology
On the contrary, if the temperature of the compressed air is high, the temperature of the cylinder will drop for a long time.
Method used
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[0014] The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments.
[0015] Such as figure 1 As shown, the rapid cooling control device for the steam turbine cylinder temperature of the generating set includes a programmable controller unit 1, a compressed air temperature sensor and a transmitter 10, a cylinder wall temperature sensor and a transmitter 11, and a temperature measuring sensor in the cylinder With the transmitter 12, the power amplifier unit 13, the heating unit 14, and the main power supply 15 of the heating unit. The programmable controller unit 1 is configured with an A / D conversion module 2 and a D / A conversion module 3, and the compressed air temperature sensor and transmitter 10 measure the temperature of the heated compressed air ready to be sent into the cylinder and send it into the A / D conversion module 2, the cylinder wall temperature sensor and transmitter 11 measure the temperature of...
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The invention discloses a device for controlling fast cooling of a cylinder of a steam turbine and a method for controlling the fast cooling of the cylinder of the steam turbine. The device comprises a programmable logical controller unit, a compressed air temperature sensor, a compressed air temperature transmitter, a cylinder wall temperature sensor, a cylinder wall temperature transmitter, an in-cylinder temperature measurement sensor, an in-cylinder temperature measurement transmitter, a power amplifier unit, a heating unit and a heating unit main power supply. The programmable logical controller unit is configured with an A / D (analog to digital) conversion module and a D / A (digital to analog) conversion module, sensor signals are sent to the A / D conversion module, the heating unit main power supply supplies power for the heating unit, the power amplifier unit is connected with the D / A conversion module, the output current value of the D / A conversion module is subjected to power amplification to control and regulate the heating unit so as to obtain the compressed air with the corresponding temperature, and the temperature difference delta T of the compressed air and the cylinder wall is controlled to be a constant value in the cooling process. The device and the method can monitor the temperature parameter in the fast cooling of the cylinder of the steam turbine, thereby ensuring reliable operation.
Description
technical field [0001] The invention relates to a steam turbine cylinder temperature rapid cooling control device and method, in particular to a generator set steam turbine cylinder temperature rapid cooling control and monitoring device and method thereof, belonging to the technical field of generator set steam turbine equipment. Background technique [0002] When a large generator set is shut down for maintenance, the cylinder of the steam turbine is cooled, and the cooling time is generally longer, which increases the maintenance time and affects the power generation cycle. The rapid cooling control method of cylinder temperature can shorten the downtime. Generator components are divided into planned shutdown and emergency shutdown. The planned maintenance shutdown is firstly cooled by the sliding parameter method, and the average cooling rate is about 1.5°C / min. When the temperature drops to 350°C, if the sliding parameter method is continued to be used for cooling, fuel...
Claims
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IPC IPC(8): F01D25/12
Inventor 黄伟崔宇杰黄甦昕
Owner ZHENJIANG COLLEGE