SU775677A1

SU775677A1 - Device for determining free water content in gas flow

Info

Publication number: SU775677A1
Application number: SU782637524A
Authority: SU
Inventors: Борис Мордкович Красс
Original assignee: Предприятие П/Я В-2636
Priority date: 1978-07-04
Filing date: 1978-07-04
Publication date: 1980-10-30

Description

3 Недостатком этого устройства вл етс то, что оно не обеспечивает возможность непосредственного отсчета концентрации свободной водь в потоке газа с достаточной точностью. Целью изобретени вл етс повышение точности непосредственного отсчета концентрации свободной воды в потоке газа. Поставленна цель достигаетс за счет того,, что отсчетное устройство выполнено в ввде счетчика электрической энергии, цепь напр жени которого через управл емое отметчиками уровн реле, соединена с подвижным контакто потенциометра, подключенного параллельно к источнику тока, св занного с токовой цепью счетчика, а ползунок подвижного контакта потенщ-юметрз . кинематически св зан с выходом измерител массового расхода газа. Сущность изобретени по сн етс чертежом, на котором представлена принципиальна схема устройства. Устройство содержит пробоотборник 1 с накопителем влаги 2, имеющим опоражнивающее устройство 3, поплавок с посто нным магнитом 4 и отметчики 5 и 6 уровн наполнени в вид герконов, св занные с отсчетным устройством 7 и блоком управлени 8. Отсчетное устройство выполнено в виде счетчика электрической энергии 9 со шкалой 10, проградуированной В единицах весовой концентрации. Токова цепь 30 3 A disadvantage of this device is that it does not provide the ability to directly measure the concentration of free water in a gas stream with sufficient accuracy. The aim of the invention is to improve the accuracy of direct reading of the concentration of free water in the gas stream. The goal is achieved due to the fact that the reading device is made in the input of an electrical energy meter, the voltage circuit of which is controlled by a movable contact of a potentiometer connected in parallel to the current source connected to the current circuit of the meter through a relay level indicator, and the slider moving contact potential-meters. kinematically associated with the output of the mass flow meter. The invention is illustrated in the drawing, which is a schematic diagram of the device. The device contains a sampler 1 with a moisture storage device 2, which has a defrosting device 3, a float with a permanent magnet 4 and level indicators 5 and 6 in the form of reed switches connected with the reading device 7 and the control unit 8. The reading device is designed as an electric energy meter 9 with a scale of 10, graduated in units of weight concentration. Current circuit 30

cчei шкa 9 через посто нное сопротивление 11 после/овательно соединена с источшжом тока со стабилизированным налр же шем 12, а цепь нагф жени через ко - так7ы 13, 14 реле 15 сое ,1 ; нска с подвижным контактом 16 потенциометра 17. параллельно подключешюго к тому же 1сточ1-шку тока 12. Подвижный контакт 16 кинематически св зан с выходом измерител массового расхода газа 18, размещенного в потоке газа.wire 9 is connected through a constant resistance 11 after it is ovally connected to a power source with a stabilized base 12, and the nagging circuit is connected through co-switches 13, 14 of the relay 15 soy, 1; Nska with a movable contact 16 of the potentiometer 17. Parallel to the same 1 drain 1 current 12. The movable contact 16 is kinematically connected with the output of the mass flow meter 18 placed in the gas flow.

Пробоотборник 1 представ.п ет собою далиндрическую трубку с присоедипештыми к ней накопителем влаги 2 в виде стакана со сливным отверстием в донышке и вмонтированным в него опоражнивающим устройством 3 в виде электромагнитного клапана 19, управл емого пусковой кнопкой 20 через реле 21. В пробоотборнике 1 размещены снегорастопитель 22 в виде нагреваемой электрическим током сетки, :элоктровентил тор 23 подсоса воздуха, сепаратор влаги 24 в ваде, например, спирального завихрител .Sampler 1 presents a dalindric tube with a moisture storage device 2 attached to it in the form of a glass with a drain hole in the bottom and a discharge device 3 mounted in it in the form of a solenoid valve 19 controlled by the trigger button 20 through the relay 21. In the sampler 1 there are snow thrower 22 in the form of an electrically heated grid,: eloktroventiltor 23 air suction, moisture separator 24 in WAD, for example, a spiral swirl.

Устройство содержит также узел регулировки подсоса воздуха 25 в пробоотборнике 1 путем изменени напр жени питани и, вследствие этого, числа оборотов привода электровентил тора 23. Узел 25 содержит сильфон 26, полость которого соед1шема с трубкой полного напора 27, размещенной в потоке воздуха.The device also contains an air suction adjustment unit 25 in the sampler 1 by varying the supply voltage and, consequently, the rotational speed of the electric fan drive 23. The assembly 25 contains a bellows 26, the cavity of which is connected to the full pressure pipe 27 placed in the air flow.

контакт 37 реле 15.contact 37 relay 15.

При достижении уровнем воды отметчика 6 размыкаетс цепь реле 15, размыкаютс контакты этого реле 13 и 14 и счетчик 9 останавливаетс . При этом число оборотов счетчика 9 пр мо пропорционально времени заполнени накопител между отметчиками 5 и 6, а его показани обратно пропорциональны времени заполнени .When the water level reaches the marker 6, the relay circuit 15 opens, the contacts of this relay 13 and 14 open, and the counter 9 stops. At the same time, the number of revolutions of the counter 9 is directly proportional to the time of filling the accumulator between the markers 5 and 6, and its readings are inversely proportional to the time of filling.

Массовый расходомер воздуха 18 воздействует на ползунок подвижного контакта 16 таким образом, что подводимое к счетчику 9 напр жеш е пропорционально массовому расходу. Следовательно показани счетчика 9 обратно пропорциональны массовому расходу воздуха. Шкала счетчика отградуирована непосредственно в единицах весового содержани свободной воды в ед11нице веса воздуха, т.е. весовой концентрации воды.The mass air flow meter 18 acts on the slider of the movable contact 16 in such a way that the flow to the counter 9 is in direct proportion to the mass flow. Therefore, the readings of counter 9 are inversely proportional to the mass flow rate of air. The meter scale is calibrated directly in units of the weight content of free water in the unit of air weight, i.e. weight concentration of water.

Записав показани счетчика 9, оператор нажимает кнопку 30. При этом размыкаетс цепь реле 21, контакты 35 и 36 реле 21 клапан 19 приходит в исходное положение и вода вытекает из накопител 2.After recording the readings of the counter 9, the operator presses the button 30. At the same time, the circuit of the relay 21 is opened, contacts 35 and 36 of the relay 21, the valve 19 comes to its original position and the water flows out of the accumulator 2.

Claims

After pressing the button 30 with a pre-selected time delay, a relay 31 is triggered, which with its contacts 33 and 34 closes the voltage circuit of the counter 9 in the direction in which it rotates in the opposite direction and the movable bellows cover 26 kinematic-; It is connected with the slider of the movable contact 28 of the potentiometer 29 (shaped according to the square law), through which the voltage is applied to the electric drive of the fan 23 proportional to the square of the gas flow rate. The control unit 8 also contains a reset button 30 for expanding the relay circuit 21 and closing the relay circuit 31, opening the normally closed contacts 32 and closing the contacts 33 and 34 of the relay 31. The device operates as follows. Before the start of the measurement cycle, the counter indicator 9 is in the extreme right position of the scale 10, and the solenoid valve 19 is open. The air mass meter 18, the electric fan 23 and the moisture separator 24 operate continuously. Water entering the storage device 2 flows through the drain hole and is carried away by the air flow. ° Pressing the button 20 triggers the relay 21, contacts 35 and 36 close the relay 21, the solenoid valve 19 is activated and the drain hole in the storage tank 2 closes. relay 15 and closes its contacts 13 and 14 of the voltage circuit of the meter 9, and the latter begins to rotate in the direction of the lowest reading. Simultaneously, the circuit closes 57 returns to the original one {{. After that, the device is ready for the next measurement cycle .-. The air suction control unit 25 serves to bring the air flow rate in sampler 1 to the velocity of the incoming gas flow to ensure that the amount of free water entering the sampler 1 per unit of time, the amount of free water passing per unit of time in the air flow through a section with an area equal to sampler inlet area 1. Formula of the invention. A device for determining the content of free water in a gas stream, comprising a sampler equipped with a draining device. a moisture carrier, in which the filling level marks associated with the control unit and the reading device are 5x7 7jjTBOM, a gas mass flow meter, or about 10 meters, so that, in order to increase the accuracy of direct reading the weight concentration of free water in the gas flow, the reading device is made in the form of an electrical energy meter, the voltage circuit of which is connected to a moving contact of a potentiometer connected in parallel with a current source connected to the current through controlled by level gauges howl counter chain, and the movable contact slider of potentiometer is kinematically coupled with the output gas mass flow meter. Sources of information taken into account in the examination 1. US Patent No. 3,064,474, cl. 73-200, 1962.

2. USSR author's certificate N 638147, class G 01 VV 1 / I, 1976.

3. For Japan Japan No. 50-14549, cl. Ill C1, 1970.