Abstract:
A fluid metering device including a housing, an isolated fluid conduit, a metering assembly, an electronics assembly, and a power assembly. An electronic device can be wirelessly connected to the metering device so as to quantify the fluid that is passing through the isolated fluid conduit. Alternatively, this can be performed by the electronics assembly and then transmitted to the electronic device. Portable spraying apparatuses are also disclosed and can include the fluid metering device. In example embodiments, other data can be captured and/or calculated such as sprayer locations, sprayed locations, type of fluid sprayed, images of the intended-to-be-sprayed subject, and/or other information pertinent as desired. In some example embodiments, the electronic device in combination with the fluid metering device can predict the chances of volatilization of the fluid based on specific environmental conditions and the fluid temperature. Finally, the sprayer and sprayed locations can be overlayed onto a map.
Abstract:
A metering system for measuring a flow of petroleum and LPG. In embodiments of the invention, a magnetic drive is used to couple a measuring chamber, such as a known oscillating piston system, to a register or indicator, avoiding leakage and excessive wear due to passing a shaft through the wall of the chamber.
Abstract:
A turbine meter used for measuring the volume of fluid flowing through a conduit includes an elongated housing having an upstream end and a downstream end and a rotor mounted within the housing. A plurality of turbine blades are mounted on the rotor at an angle with respect to the axis of rotation of the rotor which causes each of the rotor blades to have a high pressure surface which faces toward the upstream end of the housing. Each of the rotor blades also has a trailing edge closest to the downstream end of the housing. An extension is included at approximately the trailing edge on the high pressure surface of at least one and preferably a plurality of the rotor blades. The extension has a length and forms an angle with respect to the high pressure surface of the rotor blade on which it is mounted which causes the percentage of error of the accuracy of the meter across a chosen operating range of the meter to be within predetermined limits.
Abstract:
An example valve includes: a pressure compensation spool configured to be subjected to a first fluid force of fluid received at a first port acting in a proximal direction; a pressure compensation spring disposed in a pressure compensation chamber and applying a biasing force on the pressure compensation spool in a distal direction; a turbine configured to rotate as fluid flows through the valve; and a flow area configured to throttle fluid flow from the first port to the pressure compensation chamber, wherein fluid in the pressure compensation chamber applies a second fluid force on the pressure compensation spool in the distal direction, such that the pressure compensation spool moves to a particular axial position based on force equilibrium between the first fluid force, the second fluid force, and the biasing force to throttle fluid flow from the pressure compensation chamber to a second port.
Abstract:
A turbine meter has a measuring chamber assembly complete with rotor and a magnetic drive train to an external register mounted on a detachable cover plate mounted over a side opening in a hollow-meter body. The measuring chamber assembly has a special slide guide fit and internal seating on the body, and it can be inserted into the body only in proper orientation in the flow path. An adapter plate on the inside of the cover positions the measuring chamber assembly relative to the cover plate. A special sealed casing magnetic drive includes rotatably mounting the driver and driven magnets on common shaft means oppositely projecting from the casing end wall.
Abstract:
A compound fluid meter including a turbine type high flow metering device disposed in a main metering conduit, a low flow positive displacement metering device disposed in a bypass conduit connected to the main conduit, changeover valve means in said main conduit for preventing fluid flow therethrough when the fluid pressure is less than a predetermined pressure, the bypass conduit being adapted to receive fluid upstream from the valve means and reintroduce it downstream of the valve means, the turbine type high flow metering device comprising a fixed rodlike support member upon which an impeller is rotatably mounted, the rod-like support member having a free end extending towards the upstream end of the main conduit, a recess in said free end of the rod-like support member, a first thrust member loosely disposed in the recess and extending therefrom toward the upstream end of the main conduit, a ball-shaped thrust member, and a recess in the hub of the impeller shaped to receive at least the free end of the rod-like support member with the first thrust member extending therefrom and the ball-shaped thrust member disposed between the upstream end of the hub recess and the first thrust member. Holes may be provided in the impeller for introducing the fluid being metered into the hub recess to lubricate and cool the relatively rotating elements therein. Further, face polarized annular permanent magnets are provided for coupling the impeller to an intermediate gear train and the intermediate gear train to the gearing of a register box to permit the intermediate gear train to be disposed in a fluid tight casing. Still further, the changeover valve means may comprise a toggle link mounted valve member having a cam follower adapted to cooperate with a cam for guiding the valve member through its opening and closing movements.
Abstract:
In one exemplar embodiment, a gas turbine flow meter is provided having a magnetic induction signal producing means disposed within the gas flow path of the meter and having unique weir type seals for protecting the rotor bearings from contamination, thus substantially prolonging the life of the rotor bearings. The magnetic induction coil and magnets utilized in the signal producing means are radially spaced significantly closer to the rotor axis of rotation than the rotor blades for substantially increasing the mechanical advantage of the meter and improving its low pressure, low flow-rate signal producing capability.