Adjustable venturi

A venturi assembly for mixing at least two liquids, the venturi assembly comprising:

• a nozzle;
• a choked section in fluid communication with the nozzle;
• a diffuser in fluid communication with the choked section, wherein the nozzle, choked section, and diffuser together define a flow path in a first direction along a first axis;
• a secondary liquid source inlet, the secondary liquid source inlet introducing secondary liquid into the choked section in a second direction along a second axis perpendicular to the first axis;
• a flow regulator placed within the choked section, the flow regulator being configured to simultaneously alter fluid flowing in the first direction and fluid flowing in the second direction;
• a sensor for monitoring a flow rate of the secondary liquid into the choked section;
• and
• a controller in electrical communication with the sensor and an actuator of the flow regulator, the controller executing a program stored in the controller to:
• (i) receive a flow rate signal from the sensor indicative of the flow rate of the secondary liquid into the choked section, and (ii) send an actuation signal to the actuator to cause the flow regulator to change a cross-sectional area of the choked section in response to the flow rate signal thereby altering the velocity of fluid flowing in the first direction along the first axis.

A venturi assembly for injecting a secondary fluid into a primary fluid flow path, the venturi assembly comprising:

• a nozzle;
• a throat in fluid communication with the nozzle, the nozzle and the throat together defining the primary fluid flow path;
• a secondary fluid conduit in fluid communication with the throat, the secondary fluid conduit for transporting secondary fluid from a secondary fluid reservoir to the throat;
• a flow adjusting device configured to alter a velocity of a primary fluid flowing along the primary fluid flow path by changing an inner diameter of the throat;
• a sensor for monitoring a flow rate of the secondary fluid from the secondary fluid reservoir to the throat;
• and
• a controller in electrical communication with the sensor and an actuator of the flow adjusting device, the controller executing a program stored in the controller to:
• (i) receive a flow rate signal from the sensor indicative of the flow rate of the secondary fluid from the secondary fluid reservoir to the throat, and (ii) send an actuation signal to the actuator to cause the flow adjusting device to change the inner diameter of the throat in response to the flow rate signal thereby altering the velocity of fluid flowing along the primary fluid flow path.