SU723531A1

SU723531A1 - Pressure regulator

Info

Publication number: SU723531A1
Application number: SU772472528A
Authority: SU
Inventors: Михаил Дмитриевич Голубев; Игорь Алексеевич Овчинников; Юрий Николаевич Ташкалов
Original assignee: Предприятие П/Я А-1665
Priority date: 1977-04-04
Filing date: 1977-04-04
Publication date: 1980-03-25

Description

1one

Изобретение относитс к устройствам автоматического регулировани и может ис пользовано в пневмосистемах наддува топливных баков двигательных установок летательных аппаратов..The invention relates to devices for automatic regulation and can be used in pneumatic systems for boosting fuel tanks of propulsion systems of aircraft.

Известен регул тор давлени газа, содержащий чувствительный элемент, подвижный торец которого в процессе изменени регулируемого давлени , совершает возвратно -посОпательное движение, передаваемое посредством взаимодействи с рычагом на регулируюитй органСЦ.A gas pressure regulator is known, which contains a sensitive element, the movable end of which, in the process of changing the controlled pressure, makes a reciprocating motion transmitted through interaction with the lever to the regulating organSC.

Этот регул тор недостаточно 1очен при поддержании выходного давлени (т.е. имеет широкий диапазон отклонений выходного давлени от номинального значени ), что св зано с изменением сил упругих элементов.This regulator is insufficiently 1 point while maintaining the outlet pressure (i.e., it has a wide range of deviations of the outlet pressure from the nominal value), which is associated with a change in the strength of the elastic elements.

Наиболее близким к изобретению по технической сущности. вл етс регул тор давлени , содержащий корпус, разделенный первым чувствительным элементом на управл ющ ю камеру и выходную камеру, в которой расположен двуплеий рычаг, св занный с первым чувствительным элементом и с регулирующимThe closest to the invention of the technical essence. is a pressure regulator, comprising a housing divided by a first sensing element into a control chamber and an output chamber in which a two-sided lever is located associated with the first sensing element and with a regulating

jpraHOfvi, установленным и входном ипуцере 2.jpraHOfvi, installed and input iputsere 2.

Однако зависимость давлен з в управл гашсй камере от входного давлени отрицательно отражаетс на точности по.дцержани посто нного давленп на выходе регул тора.However, the dependence of the pressure in the control chamber on the input pressure negatively reflects on the accuracy of keeping the pressure constant at the outlet of the regulator.

Целью пзобретени вл етс повышение точности регул тора.The purpose of the invention is to improve the accuracy of the controller.

Достигаетс эю тем, что в него введены второй чувствитслг ный элемент с пружиной задани , кры111ка и клапан, св занный с устзновленнымн между крьннкой и стенкой выход 1ОЙ камеры вторым чувствительным элементом, подмембранна и надмембранна полосга которого соединены соответственно с управл ющей камерой и с атмосферой, причем седло клапана выполнено в стенке вь ходной камеры.It is achieved by the fact that it introduces a second sensing element with a spring of task, a cover and a valve connected to the outlet of the 1st chamber by the second sensor installed, the output of the 1st chamber of the second sensitive element, the submembrane and supramembrane strip of which are connected respectively to the control chamber and the atmosphere, moreover, the valve seat is made in the wall of the inlet chamber.

На чертеже изображена схема регул тора давлени .The drawing shows a pressure regulator circuit.

Claims

The controller contains a housing 1. divided by the first member of the element 2 into the control 3 and the output chamber 4. in which there is a double-arm 5, connected with the first sensitive element 2 37 and with the regulator 6 installed in the inlet fitting 7, the second the sensing element 8 with the spring of task 9, the lid 10 and the valve 11 connected with the lid 10 and the wall 12 of the exit chamber 4 installed between the second sensing element 8, the submembrane 13 and the supermembrane 14 of the cavity of which are connected respectively to the control chamber 3 the atmosphere, and the seat 15 of the valve 11 is made in the wall 12 of the output chamber 4. The spring 16 is installed in the control chamber 3. The control chamber 3 is connected to the submembrane cavity 13 by a tube 17. The double-arm lever 5 is mounted on the axis 18. Regulator 6 is installed in the guiding prism 19 and provided with a saddle 20. The output chamber 4 carries the outlet plug 21. The valve 11 is equipped with a locking spring 22 and is connected to a safety valve 23 equipped with a spring 24. The spring of task 9 rests on a plate 25, the position of which is adjusted by a screw 26 Pressure Regulator works as follows. High-pressure gas is supplied to the inlet fitting 7, passes through the fully open section between the regulator 6 and the seat 20 and enters the outlet chamber 4. From there, part of the gas enters the outlet fitting 21, and part of the gas passes through the fully open section between valve 11 and the saddle 15 and enters the submembrane cavity 13, and then through the tube 17 enters the control chamber, 3. In the process of entering the mode, the pressure in the cavities and chambers 4, 13 and 3 rises. Upon receipt of a predetermined pressure in the cavity 13, the sensitive element 8 bends, the valve 11 closes, and a constant control pressure is established in the cavity 13 and the chamber 3. In this case, the pressure in chamber 4 somewhat increases by an amount determined by the force of the spring 16, after which the valve of the regulating member 6 closes. The regulator 6 is automatically installed in such a position that the gas flow through it is equal to the flow rate taken by the consumer from the outlet nozzle 21, and the output pressure balances the control pressure and spring force 16. If there is some gas flow over the closed seat 15, This control pressure will slightly increase, the sensitive element 8 will be additionally protruded and a safety valve 23 will open, which will discharge the flowing gas into the atmosphere. The described pressure regulator will Ensures high dynamic stability of the control process due to the relatively low output pressure (relative to the input pressure) and its relatively smooth increase during the period of entering the mode (even with a sharp supply of maximum gas pressure to the input of the gearbox). Claims of Invention A pressure regulator comprising a housing divided by a first sensing element into a control chamber and an output chamber in which a two-arm lever is located associated with the first sensing element and with a regulator installed in the inlet nozzle, because , In order to improve the accuracy of the regulator, a second sensing element with a spring of a task, a cap and a valve connected with an installed one are introduced into it; between the lid and the wall of the inner chamber, the second sensing element, the submembrane and supramembrane cavities of which are connected respectively to the control chamber and the atmosphere, and the valve seat is made in the output chamber chamber. Sources of information taken into account in the examination 1. USSR author's certificate number 407517, cl. G 05 D 16/06, 1971.

2. USSR author's certificate number 202597, cl. G 05 D 16/06, 1963 (prototype).