SU739486A1

SU739486A1 - Pressure control device

Info

Publication number: SU739486A1
Application number: SU772529539A
Authority: SU
Inventors: Лев Григорьевич Соколов; Александр Иванович Штин; Леонид Александрович Бубнов; Александр Федорович Пыхов; Леонид Филиппович Стариков
Original assignee: Предприятие П/Я А-7114
Priority date: 1977-10-03
Filing date: 1977-10-03
Publication date: 1980-06-05

Description

(54) УСТРОЙСТВО ДЛЯ РЕГУЛИРОВАНИЯ (54) DEVICE FOR REGULATION

II

Изобретение относитс к области пневмоавтоматики и может найти применение в системах газоснабжени .The invention relates to the field of pneumatic automation and can be used in gas supply systems.

Регул тор с дополнительным регулирующим ступенчатым устройством, задающим степень сжати регулировочной пружины l , известен. Он содержит корпус с выходным и входным патрубками и расположенный в нем чувствительный элемент, св занный с регулирующим органом и пружиной задани .A regulator with an additional regulating step device specifying the degree of compression of the adjusting spring l is known. It comprises a housing with outlets and inlets, and a sensing element located therein associated with the regulator and the spring of the task.

Недостатком этого устройства вл етс ступенчатое сжатие задающей пружины по упорам и невозможность обеспечени дистанционной перенастройки.A disadvantage of this device is the stepwise compression of the driver spring on the stops and the impossibility of providing remote reconfiguration.

Известен двухрежимный редуктор давлени , обеспечивающий дистанционное переключение выходного давлени с одной настройки на другую. Он содержит корпус с выходным и входным каналами, в который встроены задающа пружина и поршень , чувствительный элемент и регулирующий узел, а также пневмоклапан ДАВЛЕНИЯA dual-mode pressure reducer is known, which provides for remote switching of the output pressure from one setting to another. It contains a housing with output and input channels, in which a driver spring and a piston, a sensitive element and a regulating unit, as well as a pneumatic pressure valve are embedded.

(электропневмоклапан), подающий давление на поршень f2jf.(electropneumatic valve), applying pressure to the piston f2jf.

Однако этот редуктор может обеспечить только две настройки (две величины давлени необходимое выходное давление.However, this pressure reducer can provide only two settings (two pressure values the required output pressure.

Целью изобретени вл етс расширение области применени регул тора, т.е. обеспечение дистанционной настройки любого давлени .The aim of the invention is to expand the scope of application of the regulator, i.e. providing remote adjustment of any pressure.

10ten

Claims

The goal is achieved by the fact that the proposed device is equipped with a setting device, a position sensor, an amplifier and a control piston, the crankshaft has a position sensor and is located between the reference spring and the pneumatic actuator piston, and the cavities of the control piston are filled with liquid and connected to the channel installed in it electrohydraulic valve. The electro-pneumatic valve and the electro-hydraulic valve are connected to the sensor through an amplifier. com position and setting point. The drawing shows a regulator, a general view. The regulator includes a housing 1 with an input 2 and an output 3 channels, in which the regulator is located - the valve. 4, through the brush 5, transmitting force to the sensitive element 6, which is affected by the spring of task 7. The control packed piston 8 is located on the melody by the spring of task 7 and the pneumatic actuator 9. The rotary cavities (channels 10 and 11) of the pneumatic actuator are connected to an electropneumatic valve 12 (EPA pneumatic cavities 13 and 14 controlling the actuator 8, filled with liquid channel 15 with the electromotive valve installed therein 16 (EGK) The controlling actuator 8 is kinematically connected with a position sensor 17. The windings of electromagnets EPA, 12 and ZGK 16 are connected to an amplifier 18, and the output of which is removed is connected to a position sensor 17 and a setting device 19. ... The device works as follows., In the rest position If there is no error signal between the position sensor 17 and the setting device 19, the control valve 4 is seated on the saddle, the setpoint is set; 7 is in a free state, the valves EPA 12 and EGK 16 are closed. When pressure is applied to the device input and there is an error signal between the setting unit 19 and the position sensor 17 EPA 12 It turns on, and the pressure through channel 1O is applied to the gap 9, at the same time, the valve EGC 16 opens and the pistons 7 and 8 move. The piston 8 moves as the fluid flows from the cavity 14 into the cavity 13. The spring of task 7 is removed, the valve 4 opens, gas is reduced in the annular gap, and it. enters output channel 3. At the same time as displacement 8, the mechanical part of position sensor 17 moves. When the error signal is processed (the discrepancy is zero), the EGC 16 is closed, the motion of Porsche 8 stops, and the pressure from cavity 10 is released through EPA 12. In this case, the device provides the necessary pressure settings. To unload the spring of task 7, sensor 19 issues a signal. The amplified error signal between the setpoint gauge 7 64 19 and the sensor 17 enters the EPA 12, the pressure is supplied to the cavity 11, the EGK 16 opens simultaneously, the liquid flows from the cavity 13 to the cavity 14, the piston 8 moves up, and the spring of the task 7 is expanded . Valve 4 sits on the seat and gas flow is stopped. .;: Thus, by setting the error signal, it is possible to provide any pressure setting device remotely in a given range. At present, up to 10 pressure reducers are used in gas supply systems, each of which is adjusted to 1-2 output pressure values. The proposed device allows to provide the required number of output pressures. The approximate economy with the introduction of the device into the gas supply system instead of limestone gearboxes with locking and filtering elements installed in front of them consists of 130O rubles. on the basis of the use of 10 pressure reducers in the current system (as per the invoice). When using the proposed device in the pneumatic setting unit of the reference pressure, which is an integral part of the system for automatic pressure control of gas of a large flow rate (up to OED kg / sec), a schedule of pressure distribution in time is given along a curve of any kind in the range from 4OO to 1 atm. The known devices cannot be used in such a system, since they produce two discrete values of output pressures. Claims V ... A device for controlling pressure, comprising a housing with inlet and outlet channels, a sensing element associated with a regulating member and a spring of a retractor and a piston-actuator with an electropneumatic valve, driven by the purpose of laxing the application area of the device is to be equipped with a presetter, a position sensor, an amplifier and a control piston, kinematically connected with the position sensor and located between the spring of the actuator and the actuator piston apolneny fluid and are connected with channel 5 arranged therein elektrogidroklapanom and electropneumatic and elektrgidroklapan through an amplifier coupled to a position sensor and a setting unit. , Sources of information taken into account in the examination 394866 1- USSR Author's Certificate No. 198715, cl. G 05 p, 1b / 00, 1967.. .

2. ABTqpcKoe certificate of the USSR 5 No. 177723, cl. G O5 D 16/00, 1966. (Prototype).