SU992901A1

SU992901A1 - Method of controlling thermic deaerator

Info

Publication number: SU992901A1
Application number: SU813334597A
Authority: SU
Inventors: Виктор Моисеевич Диденко; Николай Александрович Рюмшин; Леонид Михайлович Воловень; Виталий Петрович Дроговоз
Original assignee: Киевское Специализированное Производственное Предприятие "Спецэнергоавтоматика"
Priority date: 1981-08-27
Filing date: 1981-08-27
Publication date: 1983-01-30

Description

(54) СПОСОБ РЕГУЛИРОВАНИЯ ТЕРМИЧЕСКОГО ДЕАЭРАТОРА(54) METHOD FOR REGULATING THERMAL DEAERATOR

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Изобретение относитс к теплоэнергетике и может быте нслользовано дл регулировани деаэраторов на тепловых и атомных элекфостанци х.The invention relates to a power system and can be widely used to control deaerators at thermal and atomic power stations.

Наиболее близким к предлагаемому вл ; л етс способ регутпфоваии термического деаэратора путем иэмеиени подачи греющего пара при изменении управл ющего сигнала, сформированного на основании сравнени результатов измерени характерного параметра пара на входе участка массовой деаэрашш воды с заданным значением. В качестве характерного параметра измер ет давление пара на входе участка массовой , О11редел ют также давление -пара на выходе этого участка и полученный перепад давлений ис- , пользуют дл формтцювани управл ющего сигнала 11.Closest to the proposed ow; It is a method of regutting thermal deaerator by simulating the supply of heating steam by changing the control signal, formed on the basis of a comparison of the measurement results of the characteristic steam parameter at the inlet of a section of a mass deaerated water with a given value. As a characteristic parameter, it measures the vapor pressure at the inlet of the mass section, O11 also determines the pressure of the vapor at the output of this section, and the resulting pressure differential is used to form the control signal 11.

Недостатком известного способа вл етс несколько пониженное качество работы деаэратора из-за неполного учета условий теплообмена .The disadvantage of this method is the somewhat lower quality of operation of the deaerator due to incomplete consideration of the heat exchange conditions.

Цель изобретени - повышение качества фаботы деаэратора.The purpose of the invention is to improve the quality of the deaerator fabota.

Поставленна цель достигаетс тем, что измер ют разность температуры насыщени пара и температуры деаэрируемой воды на входе участка массовой деаэрации и используют згу разность, в качестве характерного параметра .This goal is achieved by measuring the difference between the vapor saturation temperature and the temperature of the deaerated water at the inlet of the mass deaeration section and using the difference, as a characteristic parameter.

На чертеже представлена схема осуществлени предлагаемого способа.The drawing shows the implementation of the proposed method.

В корпус 1 деа атора деа ируема вода поступает через патрубок 2, а греюишй пар через регулирующий клапан 3. Деаэрируемые газы удал ютс через штуцер 4. На верхней распределительной дырчатой тарелке 5, распо .ложенной на входе участка массовой деаэрации воды, размещен датчик 6, измер ющий разность температуры t насыщени пара и -температуры tg деаэрируемой воды, т. е. величину недогрева воды. Выход датчика 6 подключен к регул тору 7 вместе с задатчиком 8. Выход регул тора 7 св зан с регулирующим клапаном 3, который установлен на подвод щем паропроводе 9.Discharged water enters the deaerator case 1 through the nozzle 2, and the blue steam through the regulating valve 3. The deaerated gases are removed through the nozzle 4. A sensor 6, located at the upper distribution perforated plate 5, located at the inlet of the mass deaeration of water, measuring the difference in the temperature t of vapor saturation and the temperature tg of deaerated water, i.e., the amount of underheating of water. The output of the sensor 6 is connected to the controller 7 together with the setting device 8. The output of the controller 7 is connected with the regulating valve 3, which is installed on the supply steam pipe 9.

Claims

The method is carried out as follows. 39 At steady state, the degree of opening of the control valve 3 ensures the supply of the required amount of steam. When one of the main parameters of deaerated water or steam changes, for example, when the heating steam pressure in the deaerator housing 1 decreases, the sensor 6 sends a signal to reduce the underheating value, because when the vapor pressure P decreases, the saturation temperature t decreases, which is a function of pressure P , and the corresponding value of heating & t, since / StH tH- tg, the underheating reduction signal goes to regulator 7 and (it equals from the setpoint setting 8 setting.i According to the deviation value of the heating from the setpoint setting 7, the control signal is proportional to deviation, which affects the opening1 of the control valve 3. An analogous implementation of the method occurs when the temperature of the produced water changes (Hanpt ep decrease) .When the vapor pressure in the housing of the attorney and the temperature of the water being displaced simultaneously changes, the sensor b generates An integral signal that takes into account the change in both parameters, and regulator 7 respectively produces an integral signal that provides the necessary opening of the control valve 3. Thus, in the proposed method, the use of the saturation temperature difference between the heating steam and the temperature of the water to be sterilized the most to improve the quality of regulation of the mode of operation of the disinser. Claims The method of regulating a thermal desaccator by changing the supply of a steam suppressor when the control signal is changed, formed on the basis of a comparison of the measurement results of the characteristic vapor meter and the input of the mass section with a specified value, from improve the quality of the deaerator, measure the temperature difference and the value of steam and the temperature of the water deaerated at the inlet of the mass deaeration section and use this difference as a characteristic parameter. Shtochnik 1b1formai1, taken into account in the examination. 1. USSR author's certificate in application | М 3282503, cl. F 22 O 11/00, April 1981. mTGGppT mfffffiiriifftffftf c-1D aada 51Ls: pS. And II guitar III I III I

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