Test stand for determining the flow characteristics of pneumatic brake valves and a method for pressure regulation at the test stand

Abstract

The subject of the application is a stand for testing the flow characteristics of air brake valves, consisting of a pneumatic energy source, a pneumatic system for supplying and controlling the operation of the tested brake valve and a measuring system, characterized in that the pneumatic system connected to the pneumatic energy source (1) is equipped with two shut-off valves, wherein the shut-off valve I (2) allows the supply of compressed air through the compressed air reservoir I (7), which is connected to the inlet (4 / 1) of the supply chamber of the brake valve (4), to the supply circuit of the tested brake valve (4), and the shut-off valve II (3) to the control circuit containing a three-way two-position solenoid valve (5), which is controlled by a control device (14) and controls the operation of the tested brake valve (4) and is supplied from the compressed air reservoir II (12),and the output of the solenoid valve (5) is connected to the control chamber A of the brake valve (4), while the control tank (10) is connected to the outlet (4 / 2) of the output chamber B of the brake valve (4), in addition, the pressure reducing valve I (6) and the pressure reducing valve II (13) are connected to the pneumatic energy source (1). The subject of the application is also the method of regulating the pressure at the station.,