| 摘要 |
FIELD: pressure limiting. SUBSTANCE: the pressure limiting device has a piston member, which seals the changeover chamber loaded with outlet pressure from connection to the pressure - relief chamber. In case of a leakage between the change-over chamber and pressure-relief chamber the entire pneumatic or hydraulic system, using the pressure limiting device, may lose the pressure. The invention offers to place throttle valve 12 in the joint between pressure-relief chamber 16 and the unloading space. Due to it, in spite of the mentioned leakage, maintaining of total pressure at outlet 7, or at least of only emergency pressure in the entire pneumatic or hydraulic system is ensured. The invention finds the widest application in the brake systems of transport facilities. EFFECT: enhanced reliability. 1 dwg |
