SU909611A1

SU909611A1 - Device for checking pressure loss in piston machine valves

Info

Publication number: SU909611A1
Application number: SU782679539A
Authority: SU
Inventors: Вениамин Федорович Кокоринов; Модест Аронович Литинский; Владимир Леонидович Равич
Original assignee: Производственное Объединение "Союзхимпромэнерго"
Priority date: 1978-10-31
Filing date: 1978-10-31
Publication date: 1982-02-28

Description

Изобретение относитс к машиностроению и, в частности к двигателестроению и компрессоростроению и может быть использовано при испытани х двигателей и компрессоров в стендовых услови х.The invention relates to mechanical engineering and, in particular, to engine and compressor engineering, and can be used in testing engines and compressors in bench conditions.

Известны устройства дл контрол потерь давлени в клапанах поршневых машин, содержащие барабан со светочувствительным элементом и валом, синхронизированным с коленчатым валом поршневой мсниины, блок преобразовани сйгнсша датчика давлени , размещенного в надпоршневом пространстве , устройство записи сигнашов и светооптическую систему }.Devices for monitoring pressure losses in piston machine valves are known, comprising a drum with a photosensitive element and a shaft synchronized with the piston crankshaft, a pressure sensor conversion unit located in the over piston space, a signal recorder and a light-optical system}.

Однако известное устройство имеет низкую точность контрол потерь давлени в клапанах поршневой , так как давление в полости за клапанами и в надпоршневой полости записываетс устройством записи сигналов раздельно.However, the known device has a low accuracy control of pressure losses in piston valves, since the pressure in the cavity behind the valves and in the overpiston cavity is recorded by the signal recorder separately.

Цель изобретени - повышение точности контрол потерь давлени в клапанах путем одновременной записи диаграмм давлений в полости за клапанами и в надпоршневом пространстве поршневой машины.The purpose of the invention is to improve the accuracy of controlling pressure losses in valves by simultaneously recording pressure charts in the cavity behind the valves and in the piston machine's over piston space.

Указанна цель достигаетс тем, что устройство дополнительно снабжено сельсин-датчиком, сельсин-прием- НИКОМ и дополнительным датчиком давлени , причем сельсин-датчик размещен на коленчатом валу, сельсинприемник - на валу барабана, а дополнительный датчик давлени установлен в полости за клапанами порш10 невой машины.This goal is achieved by the fact that the device is additionally equipped with a selsyn sensor, a selsyn receiver and an additional pressure sensor, the selsyn sensor is located on the crankshaft, the primary receiver - on the drum shaft, and an additional pressure sensor is installed in the cavity behind the piston valves of the new machine .

На чертеже приведена схема устройства .The drawing shows a diagram of the device.

Устройство содержит барабан 1 со светочувствительным элементом (не The device contains a drum 1 with a photosensitive element (not

15 показан) и валом 2, синхронизированным с коленчатым валом 3 поршневой машины 4, блок 5 преобразовани сигнала датчика 6 давлени , размещенного в надпоршневом пространстве 7, 15 is shown) and the shaft 2 synchronized with the crankshaft 3 of the piston machine 4, the unit 5 converts the signal of the pressure sensor 6 located in the over piston space 7,

20 устройство 8 записи сигналов и светооптическую систему 9. Сельсин-датчик 10 размещен на коленчатом валу 3, сельсин-приемник 11 на валу 2 барабана 1, а дополнительный датчик 20 a device 8 for recording signals and a light-optical system 9. The sensor-sensor 10 is placed on the crankshaft 3, the receiver 11 on the shaft 2 of drum 1, and the additional sensor

25 12 давлени установлен в полости 13 за клапанами 14 поршневой машины 4.25 12 pressure is installed in the cavity 13 behind the valves 14 of the piston machine 4.

Claims

When controlling the pressure losses in the valves 14 of the piston machine 4, the signals of the sensors 6 and 12 of the pressure, 30 installed respectively in the piston space 7 and in the papost 13 for the valve 14 of the piston machine 4, flow through the unit 5 to convert the signals and the light-optical system 9 to the device 8 Signal records. Selsin-sensor 10 and selsyn-receiver 11 provide synchronization of shafts 2 and 3 in the recording process. The difference in signals controls the pressure losses in the valve 14 of the piston machine 4. Thus, performing the device with a selsyn sensor, a selnsy receiver and a pressure sensor installed in a box behind the valves of the piston machine provides simultaneous recording of signals from the pressure sensors in one cycle. As a result, the accuracy of controlling the pressure loss in the valves of a piston machine is significantly increased. Claims An apparatus for monitoring pressure losses in valves of a piston machine, comprising a barAban with a photosensitive element and a shaft synchronized with the crankshaft of a piston machine, a signal transducer unit for a pressure sensor located in the over-piston space, a signal recorder and a light-optical system, characterized in that in order to increase accuracy by simultaneously recording pressure diagrams in the cavity behind the valves and in the piston machine's over-piston space, the device is It is equipped with a selsyn sensor, a selsyn receiver and an additional pressure sensor, with the selsyn sensor placed on the crankshaft, the selsyn receiver on the drum shaft, and an additional pressure sensor installed in the cavity behind the valves of the piston machine. Sources of information taken into account in the examination 1. USSR author's certificate 476472 cl. G OIL 19/08, 1972.

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