SU1271551A1

SU1271551A1 - Installation for dehumidification of compressed air

Info

Publication number: SU1271551A1
Application number: SU853898351A
Authority: SU
Inventors: Юлий Николаевич Головач; Александр Иванович Чернов; Иван Васильевич Скогорев
Priority date: 1985-05-07
Filing date: 1985-05-07
Publication date: 1986-11-23

Abstract

Изобретение относитс к установке дл осушки сжатого воздуха, может :быть использовано в крано- и экскаваторострсении и позвол ет повысить экономичность и надежность установки. Она содержит компрессор 1 с приводным электродвигателем 2, управл емым реле 3 давлени , имеющие размыкающий 4 и замыкающий 5 контакты. Последовательно компрессору 1 установлены теплообменник 6, отсечной клапан 7 с вентилем 8, адсорбер 9 (А) с сеператором , обратный клапан. 10 и воздухосборник 12. К нижней части А 9 присоединен клапан 13 продувки с вентилем 14 и катушкой. Параллельно клапану 7 подключен перепускной клапан 16 с вентилем 17, катушкой и дросселем 18. Параллельно клапану 10 установа лен фильтр 20 и дроссель 21. К замыкающему контакту 5 реле 3 давлени (Л подключен регул тор 22, содержащий катушку 23 реле времени, размыкающий и замыкающий контакты, св занные с .. вентилем 14. 1 ил.The invention relates to a plant for drying compressed air, can: be used in cranes and excavators and can improve the efficiency and reliability of the installation. It contains a compressor 1 with a driving motor 2, controlled by a pressure relay 3, which has a trip 4 and a make 5 contacts. Consistently with the compressor 1, there is a heat exchanger 6, a shut-off valve 7 with a valve 8, an adsorber 9 (A) with a seperator, a check valve. 10 and an air collector 12. A purge valve 13 with a valve 14 and a coil is connected to the bottom of A 9. A relief valve 16 is connected parallel to valve 7 with a valve 17, a coil and a throttle 18. A filter 20 and a throttle 21 are installed parallel to a valve 10. A pressure relay 3 is connected to the closing contact 5 (L is connected to a regulator 22 containing a time relay coil 23 opening and closing contacts connected with .. valve 14. 1 Il.

Description

Изобретение относится к железнодорожному транспорту,, касается адсорбционных установок локомотивов и может быть использовано и в других устройствах, использующих осушенный сжатый воздух в качестве рабочего тела, например в крано- и экскаваторостроении, • Цель изобретения - повышение экономичности и надежности устройства»The invention relates to railway transport, relates to adsorption installations of locomotives and can be used in other devices using dried compressed air as a working fluid, for example, in crane and excavator construction, • The purpose of the invention is to increase the efficiency and reliability of the device ”

На черетеже представлена схема установки.The drawing shows the installation diagram.

Установка содержит компрессор 1с. приводным электродвигателем 2, управляемым реле 3 давления, имеющим размыкающий 4 и замыкающий 5 контакты, установленные последовательно компрессору 1 теплообменник 6, отсечной клапан 7, управляемый электропневматическим вентилем. 8 с катушкой, адсорбер 9 с сепаратором, обратный клапан 10, магистраль 11 осушенного воздуха и воздухосборник 12. В нижней части адсорбера 9 подсоединен клапан 13 продувки, который управляется электромагнитным вентилем 14 с катушкой. Параллельно отсчетному клапану 7 магистралью 15 подключен перепускной клапан 16, управляемый электромагнитным вентилем 17с катушкой. Последовательно перепускному клапану 16 установлен дроссель 18, Параллельно обратному клапану 10 подсоединена магистраль 19 продувки адсорбера, с фильтром 20 и дросселем 21. К замыкающему контакту 5 реле 3 давления подключен регулятор 22 продолжительности цикла регенерации, содержащий катушку 23 реле времени, размыкающий 2.4 и замыкающий 25 контакты. К контакту 5 подключена через размыкают,ий контакт 24 катушка электромагнитного вентиля .14, а через замыкающий контакт 25 катушка электромагнитного вентиля 17. Приводной электродвигатель 2 получает управляющее питание от источника 26 тока через кнопку 27 и размыкающие контакты.4 реле 3 давления.The installation contains a compressor 1s. a drive motor 2, controlled by a pressure switch 3, having opening 4 and closing 5 contacts, connected in series to compressor 1, heat exchanger 6, shut-off valve 7, controlled by an electro-pneumatic valve. 8 with a coil, an adsorber 9 with a separator, a check valve 10, a dry air line 11 and an air collector 12. A purge valve 13 is connected to the bottom of the adsorber 9, which is controlled by an electromagnetic valve 14 with a coil. In parallel to the check valve 7, the bypass 15 is connected to the bypass valve 16, controlled by an electromagnetic valve 17 with a coil. A throttle 18 is installed in series with the bypass valve 16, A canister purge line 19 is connected in parallel with the non-return valve 10, with a filter 20 and a throttle 21. A regulator 22 for the regeneration cycle duration is connected to make contact 5 of the pressure switch 3 and contains a coil 23 of the time relay that opens 2.4 and closes 25 contacts. A solenoid valve coil .14 is connected to contact 5 through open, contact 24 is a solenoid valve coil, and solenoid valve coil 17 is connected through make contact 25. Drive motor 2 receives control power from current source 26 through button 27 and open contacts. 4 pressure switches 3.

Установка работает следующим образом. .Installation works as follows. .

Нажатием кнопки 27 включается приводной электродвигатель 2, приводится в работу компрессор 1 и сжатый воздух через теплообменник 6 и открытый отсечной клапан 7 поступает в адсорбер 9, очищается в сепараторе от капельной влаги и масла,, осушается и через обратный клапан 10 направляет ся в магистраль 11 сухого воздуха, в воздухосборник 12 и далее к потребителю. В это время катушки вентилей 14 и 17 обесточены, поэтому клапан 13 продувки и перепускной клапан 16 закрыты. При достижении в воздухосборнике 12 максимального рабочего давления срабатывает'реле 3 давления, размыкается его контакт 4, выключая приводной электродвигатель 2 и останавливая компрессор 1, а замыкается контакт 5, подавая питания на катушки электромагнитных вентилей 8 и 14 клапана 13 продувки и отсечного клапана 7. При этом отсечной клапан 7 закрывается, разобщая теплообменник 6 и адсорбер 9 и сохраняя в теплообменнике рабочее давление.By pressing the button 27, the drive motor 2 is turned on, the compressor 1 is brought into operation and the compressed air through the heat exchanger 6 and the open shut-off valve 7 enters the adsorber 9, it is cleaned of droplet moisture and oil in the separator, it is drained and sent through the non-return valve 10 to the main 11 dry air into the air collector 12 and further to the consumer. At this time, the coils of the valves 14 and 17 are de-energized, so the purge valve 13 and the bypass valve 16 are closed. When the maximum working pressure is reached in the air collector 12, pressure switch 3 activates, its contact 4 opens, turning off the drive motor 2 and stopping the compressor 1, and contact 5 closes, supplying power to the coils of the electromagnetic valves 8 and 14 of the purge valve 13 and shut-off valve 7. In this case, the shut-off valve 7 closes, separating the heat exchanger 6 and the adsorber 9 and maintaining the working pressure in the heat exchanger.

Одновременно открывается клапан продувки 13 и сообщает адсорбер 9 с атмосферой. После разрядки адсорбера часть сухого воздуха из магистрали 11 через магистраль 19 продувки, фильтр 20 и дроссель 21 поступает в адсорбер 9, регенерирует в нем адсорбент и через открытий клапан 13 продувки отводится в атмосферу. В момент остановки компрессора вместе с катушками вентилей 14 и 17 отсечного клапана 7 и клапана 13 продувки получает питание также, катушка 23 реле времени, катушка 22 регулятора продолжительности цикла регенерации, начинающее отсчет продолжительности регенерации адсорбента. Длительность регенерации выбирается такой, чтобы в это время через адсорбент прошло количе’ство воздуха, не превышающее теоретически необходимое при среднеэксплутационной продолжительности включения компрест. сора (ПВ), равной около 40%, т.е. равной времени стоянки компрессора при данной величине ПВ.At the same time, the purge valve 13 opens and communicates the adsorber 9 with the atmosphere. After the adsorber is discharged, part of the dry air from the line 11 through the purge line 19, the filter 20 and the throttle 21 enters the adsorber 9, regenerates the adsorbent in it and through the openings the purge valve 13 is vented to the atmosphere. At the moment the compressor stops, together with the coils of the valves 14 and 17 of the shut-off valve 7 and the purge valve 13, power is also supplied to the coil 23 of the timer, coil 22 of the regulator for the duration of the regeneration cycle, which starts counting the duration of regeneration of the adsorbent. The duration of regeneration is chosen so that at this time an amount of air passes through the adsorbent, not exceeding theoretically necessary for the average operating duration of switching on the compress. litter (PV), equal to about 40%, i.e. equal to the compressor standby time for a given PV value.

По истечении этого периода реле времени срабатывает, его контакты размыкаются, а контакты 25 замыкаются. При этом теряет питание катушка вентиля 14 клапана 13 продувки, который закрывается, после чего прекращается регенерация адсорбента. Одновременно через контакты 25 получает питание катушка вентиля 17, открывается перепускной клапан 8 и воздух теплообменника 6 через магистральAfter this period, the time relay trips, its contacts open, and contacts 25 close. In this case, the valve coil 14 of the purge valve 13, which closes, loses power, after which the adsorbent regeneration stops. At the same time, through the contacts 25, the valve coil 17 receives power, the bypass valve 8 opens and the air of the heat exchanger 6 through the line

15, перепускной клапан 16 и дроссель поступает в адсорбер 9 и.заполняет его до равновесного давления.15, the bypass valve 16 and the throttle enters the adsorber 9 and fills it to equilibrium pressure.

При снижении в магистрали 11 давления сжатого воздуха до минимального рабочего срабатывает реле 3 давления, размыкаются его контакты 5 и замыкаются контакты 4, отключается регулятор 22, размыкаются его контакты 25, а когда замыкаются контакты 24, то 5 закрывается перепускной клапан 16 открывается отсечной клапан 7, включается компрессор 1 и процесс повторяется.When the pressure in compressed air line 11 drops to the minimum working pressure switch 3 is activated, its contacts 5 open and contacts 4 are closed, controller 22 is turned off, its contacts 25 are open, and when contacts 24 are closed, bypass valve 16 closes 5, shut-off valve 7 closes , compressor 1 is turned on and the process is repeated.

Claims

The invention relates to railway transport, concerns adsorption plants of locomotives and can be used in other devices using dried compressed air as a working body, for example, in cranes and excavators, the purpose of the invention is to improve the efficiency and reliability of the device. . The installation contains a compressor 1 with a driving motor 2, controlled by a pressure relay 3, having a breaker 4 and a closing 5 contacts, a heat exchanger 6 installed in series with the compressor 1, a shut-off valve 7 controlled by an electropneumatic valve. 8 with a coil, an adsorber 9 with a separator, a check valve 10, a dry air pipe 11 and an air collector 12. In the lower part of the adsorber 9, a purge valve 13 is connected 5 which is controlled by a coil solenoid valve 14 Parallel to the reading valve 7, a bypass valve 16 is connected bypass valve 16 controlled the solenoid valve 17c with the coil, the successive bypass valve 16 is installed choke 18. In parallel with the check valve 10 is connected to the main pipe 19 of the adsorber purge filter 20 and choke 21, to the closing contact 5 of the pressure relay 3 is connected to a regulator 22 of the duration of the regeneration cycle, containing a coil 23 of the time relay, opening: 24, and closing: 25 contacts. To pin 5 of the sub switch, through the opening contact 24, the coil of the electromagnetic valve 14, and through the closing contact 25 the coil of the electromagnetic valve 17 The driving motor 2 receives control power from the current source 26 through the button 27 and the opening contacts, 4 pressure relays 3. The installation works as follows. By pressing button 27, the water motor 2 is turned on, the compressor 1 is put into operation and the compressed air through the heat exchanger 6 and the open shut-off valve 7 enters the adsorber 9. It is cleaned from the separator from drip moisture and oil, dried and through a check valve 10 is directed to the dry air line 11, B air collector 12 and further to the consumer. At this time, the coils of the valves 14 and 17 are de-energized, therefore the valve. 13 purge and bypass valve 16 are closed. When the maximum working pressure of the air collector 3 reaches in the air collector 12, its contact A opens, turning off the drive motor 2 and stopping the compressor 1, and contact 5 is closed, supplying power to the coils of the electromagnetic valves 8 and 14 of the purge valve 13 and the shut-off valve 7. At the same time the shut-off valve 7 is closed, the heat exchanger 6 is disconnected, and the adsorber 9 is kept and the working pressure remains in the heat exchanger. At the same time, the purge valve 13 opens and communicates the adsorber 9 with the atmosphere. After the adsorber is discharged, part of the dry air from line 11 through purge line 19, filter 20 and throttle 21 enters adsorber 9, regenerates adsorbent in it, and discharges valve 13 through vents into atmosphere. At the time of stopping the compressor, along with the coils of valves 14 and 17 of the shut-off valve 7 and the valve 13 of the purge, the coil 23 of the time relay, coil 22 of the regulator of the regeneration cycle duration, also starts powering the countdown of the adsorbent regeneration time. The regeneration duration is chosen such that at this time an amount of air passes through the adsorbent, which does not exceed the theoretically necessary for the average operating time of the start of the komprest. litter (willow), equal to about 40%, i.e. equal to the compressor stop time at a given PV time. After this period, the time relay 23 is activated, its contacts 24 are closed, and contacts 25 are closed. Thus, the coil of the valve 14 of the valve 13 of the purge 13 loses power, which closes, after which the regeneration of the adsorbent ceases. At the same time, the reel 25 is supplied with power by the coil of the valve 17, the overflow valve 8 and the air of the heat exchanger 6 are opened through line 15, the overflow valve 16 and the throttle 18 enter the adsorber 9 and fill it up to the equilibrium pressure. When compressed air pressure is lowered in line 11 to the minimum operating pressure, relay 3 triggers, its contacts 5 are closed, and contacts 4 are closed, and regen is disconnected; 22, its contacts 25 open, and when contacts 24 are closed, the bypass valve 16 opens the shut-off valve 7, compressor 1 is turned on and the process is repeated. Claims: Compressed air drying unit, including a compressor with a drive motor, a pressure switch controlled with closing and opening contacts, a heat exchanger connected in series with the compressor, a valve, controlled by an electromagnetic valve with an adsorber coil with a separator and a purge valve, a controlled solenoid valve with a coil, a check valve with an adsorber purge line with a throttle and a filter parallel to it, a dried air line with an air collector The regeneration cycle duration regulator having a time relay with a coil closing and opening with 1m contact, characterized in that, in order to increase the efficiency and reliability of the installation, it additionally contains a bypass valve with a throttle controlled by a solenoid valve with a coil, This bypass valve with a throttle is connected in parallel to the shut-off valve, and the coils of the time switch of the shut-off valve are connected to the closing contact of the pressure switch, the bypass valve is connected via the closing contact of the relay time, and the valve purge, ki - through the break contact time relay.