초록 ▼

The present invention is a new self-balancing modulating control valve for use in a variable-flow fluid distribution system supplying a plurality of loads, which when installed at each load permits a smaller pumping head at all flow conditions. The purpose of this invention is to develop a valve for

The present invention is a new self-balancing modulating control valve for use in a variable-flow fluid distribution system supplying a plurality of loads, which when installed at each load permits a smaller pumping head at all flow conditions. The purpose of this invention is to develop a valve for a variable-flow fluid distribution system that uses less energy than current systems by requiring a near zero pressure drop across the valve but still operates effectively at all load and flow conditions. This invention can allow electronically actuated ball-type valves that are now available to operate reliably and with a longer life by achieving effective control with less frequent reposition requirements.

대표청구항 ▼

1. A self-balancing valve and actuator assembly for use in a variable-flow fluid distribution system, comprising:a valve body capable of connecting the valve to a pipe; a flow regulating device located within the valve body, the flow regulating device being positionable for controllably regulating f

1. A self-balancing valve and actuator assembly for use in a variable-flow fluid distribution system, comprising:a valve body capable of connecting the valve to a pipe; a flow regulating device located within the valve body, the flow regulating device being positionable for controllably regulating fluid flow through the valve body; an electronic input for receiving a position command signal from a load controller; a local temperature sensor arranged for measuring an actual fluid temperature of fluid passing through the valve body; and a position controller mechanically coupled to the flow regulating device for modulating the position of the flow regulating device, wherein the position controller stores a threshold temperature determined by system requirements of a load within the distribution system, receives a measurement of the actual fluid temperature from the temperature sensor, receives the position command signal from the electronic input, and modulates the position of the flow regulating device based on the threshold temperature, the actual fluid temperature, and the position command signal.