INTEGRATING PNEUMATIC AMPLIFIER Russian patent published in 1997 - IPC

FIELD: automatic control, systems of pressure control ay industrial facilities. SUBSTANCE: integrating pneumatic amplifier includes body 1 housing outlet 3 and control 4 chambers and chamber 2 connected to supply pressure duct, sensitive comparison element 5 with setting unit and spring-loaded double control element. Bell-crank 11 is brought into control chamber 4, one arm of it interacts with sensitive comparison element 5 and the other arm carries valve 12. Control element is fabricated in the form of three-arm lever mounted in output chamber 3, first arm of it is put on axle 16 and carries valve 20, two other arms 17 and 18 are attached to separating membranes 19 forming together with body 1 output 3 and unloading 24 chambers. Second hollow arm 17 of control element carries seat 23 interacting with valve 12 of control chamber 4. Unloading chamber 24 is inserted into body 1 and communicates with control chamber 4 acting on third arm 18 of lever. EFFECT: enhanced precision of pneumatic amplifier thanks to decrease of error of intensity zone caused by friction. 1 dwg