SU587271A1

SU587271A1 - Pneumatic oscillator

Info

Publication number: SU587271A1
Application number: SU762365065A
Authority: SU
Inventors: Владимир Яковлевич Раутенштейн; Андрей Владимирович Пуховский
Original assignee: Специальное Констркуторское Бюро По Автоматике В Нефтепереработке И Нефтехимии (Башкирский Филиал)
Priority date: 1976-05-26
Filing date: 1976-05-26
Publication date: 1978-01-05

Description

Изобретение относитс к вычислитедьным и управл ющим средствам систем рневмоавтематики и может быть испольаовано как функциональное устройство.The invention relates to the computing and control means of rheumatic automatics systems and can be used as a functional device.

Известен пневматический генератор колебаний, выполненный на базе реле с петлей гистерезиса fl.Known pneumatic oscillation generator, made on the basis of a relay with a hysteresis loop fl.

Однако этот генератор имеет слож ную конструкцию.However, this generator has a complex structure.

Наиболее- близким к изобретению по технической сути вл етс пневматический генератор колебаний, содержащий пневмореле, включенное по схеме отрицани , дроссель, основной повторитель с отрицательньзм сдв,игом, сопло которого соединено с емкостью и управл ющей камерой пневмореле, выход которрго вл етс выходным каналом генергтора 2.The closest to the invention in technical terms is a pneumatic oscillator containing a pneumorel, switched on according to the negative circuit, a choke, a main repeater with a negative voltage, a needle whose nozzle is connected to the tank and a control chamber of the pneumorel, whose output is the output channel of the generator 2

Однако такой генератор не обладает Достаточной надежностью и имеет слож ую конструкцию.However, such a generator does not have sufficient reliability and has a sophisticated design.

Цель изобретени - упрощение конструкции генератора и повышение его надежности - достигаетс тем, что в Нем установлен дополнительный повторитель с отрицательным сдвигом, соплс которого соединено с выходом пневмореле , а проточна камера соединена глухой камерой основного повторител 1 через дроссель - с проточной камерой основного и глухой камерой дополнительного повторителей.The purpose of the invention is to simplify the design of the generator and increase its reliability - it is achieved by installing an additional negative-shift repeater in Him, the nozzle of which is connected to the outlet of the pneumorel, and the flow chamber is connected by a deaf chamber of the main repeater 1 through a choke to the flow chamber of the main and deaf chamber additional repeaters.

На чертеже представлена принципиальна схема предложенного генератора колебаний.The drawing shows a schematic diagram of the proposed oscillation generator.

Пневматический генератор колебаний содержит пневмореле 1, включенное по схеме отрицани , повторители 2 и 3 с отрицательным сдвигом, дроссель 4 и емкость 5.Pneumatic oscillation generator contains pneumorel 1, included in the negative circuit, repeaters 2 and 3 with a negative shift, throttle 4 and capacity 5.

Генератор работает следующим образом .The generator works as follows.

При включении давлени питани вы становитс равньш . Это , давление через открытое сопло повторител 3 поступает на дроссель 4, и в емкости 5 давление обратной св зи РОС начинает,линейно возрастать. Линейность обеспечиваетс работой повторител со сдвигом 2, в сопловой камере которого устанавливаетс посто нное давление, меньше давлени питани на величину сдвига Cj .При достижении давлени срабатывани в камере пневмореле/ оно переключитс , и Pgbix скачкообразно станет равен 0.When you turn on the power pressure, you become equal. This, the pressure through the open nozzle of the repeater 3 is supplied to the throttle 4, and in the tank 5 the feedback pressure POC begins to linearly increase. Linearity is ensured by the operation of the repeater with a shift of 2, in the nozzle chamber of which a constant pressure is established, less than the supply pressure by the shift Cj. When the response pressure in the chamber of the pneumatic relay reaches / it switches, and Pgbix becomes equal to 0 stepwise.

Claims

The air from tank 5 through the fully open nozzle of repeater 2 and choke 4 begins to bleed off the RF flow chamber of repeater 3, where pressure is set that is less than pressure in the chamber of the pneumorel by the amount of shift Cg Due to the pressure drop across the choke. linearity of pressure drop in the pneumorel chamber. I When the pressure in the chamber of the Morel is psxhenie, up to the value of its release, the braeno will change to the pressure of the feed. The process is then repeated. By varying the magnitudes of the shifts of C Cj, a smooth adjustment is achieved in the oshrokyh limits of the interval and duration of the output pulses. Due to the exclusion from the design of the switch device, regulating chokes and repeater power chokes, the design of the generator is greatly simplified (it becomes more compact, the own air flow is reduced. Introduction instead of adjustable chokes, posthiHHoro chokes, having stable characteristics under changing conditions. It does not improve the reliability and stability of the generator. Formula of the invention Pneumatic oscillation generator containing pneumorele negative circuit, choke, negative-shift main follower, the nozzle of which is connected to the tank and control chamber of the pneumorele, the output of which is the generator output channel, characterized in that, in order to simplify the generator and increase its reliability additional negative-shift repeater, the nozzle of which is connected to the outlet of the pneumorel, and the flow-through chamber is connected to the deaf chamber of the main repeater and through the throttle through the flow chamber of the main and deaf kame a swarm of additional repeaters. Sources of information taken into account in the examination: 1. Berenda TK and other elements and schemes of pneumatic automation. M., Mechanical Engineering, 1968, p. 113, fig. 79.

2. USSR author's certificate a931b, R 15 C 3/00. 1959