METHODS AND APPARATUS TO CONTROL THE ACTUATION OF REGULATORS INCLUDING A LOADING CHAMBER

Methods and apparatus to control the actuation of regulators including a loading chamber are disclosed. An example apparatus includes a first pneumatic regulator including a loading chamber, the firstpneumatic regulator to flow fluid toward a downstream process; a second pneumatic regulator coupled between the loading chamber and the downstream process, the second pneumatic regulator to control an actuation of the first pneumatic regulator during normal operation based on a pressure difference between a first pressure downstream of the first pneumatic regulator and a second pressure within the loading chamber; and a valve coupled between the loading chamber and the downstream process, the valve to control the actuation of the first pneumatic regulator during a shut-down event. 公开了用于控制包括加载室的调节器的致动的方法和装置。示例性装置包括：第气动调节器，其包括加载室，第气动调节器使流体流向下游过程；第二气动调节器，其耦接在加载室与下游过程之间，第二气动调节器在正常操作期间基于第气动调节器下游的第压力与加载室内的第二压力之间的压力差来控制第气动调节器的致动；以及耦合在加载室与下游过程之间的阀，该阀在关闭事件期间控制第气动调节器的致动。