CA2859228A1 - Fluid metering device - Google Patents
Fluid metering device Download PDFInfo
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- CA2859228A1 CA2859228A1 CA2859228A CA2859228A CA2859228A1 CA 2859228 A1 CA2859228 A1 CA 2859228A1 CA 2859228 A CA2859228 A CA 2859228A CA 2859228 A CA2859228 A CA 2859228A CA 2859228 A1 CA2859228 A1 CA 2859228A1
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- Prior art keywords
- fluid
- housing
- metering device
- level
- fluid metering
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Classifications
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01F—MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
- G01F15/00—Details of, or accessories for, apparatus of groups G01F1/00 - G01F13/00 insofar as such details or appliances are not adapted to particular types of such apparatus
- G01F15/001—Means for regulating or setting the meter for a predetermined quantity
- G01F15/003—Means for regulating or setting the meter for a predetermined quantity using electromagnetic, electric or electronic means
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01F—MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
- G01F15/00—Details of, or accessories for, apparatus of groups G01F1/00 - G01F13/00 insofar as such details or appliances are not adapted to particular types of such apparatus
- G01F15/005—Valves
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01F—MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
- G01F15/00—Details of, or accessories for, apparatus of groups G01F1/00 - G01F13/00 insofar as such details or appliances are not adapted to particular types of such apparatus
- G01F15/06—Indicating or recording devices
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01F—MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
- G01F23/00—Indicating or measuring liquid level or level of fluent solid material, e.g. indicating in terms of volume or indicating by means of an alarm
- G01F23/0007—Indicating or measuring liquid level or level of fluent solid material, e.g. indicating in terms of volume or indicating by means of an alarm for discrete indicating and measuring
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- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- General Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Loading And Unloading Of Fuel Tanks Or Ships (AREA)
Abstract
The present invention teaches a fluid metering device. The fluid metering device comprises a housing having a fluid outlet extending therefrom and a fluid inlet extending therefrom. The fluid outlet and inlet are fluidly connected to a fluid meter within the housing. The housing is attached to hangers for suspending the fluid metering device from the side of a fluid reservoir.
As fluid is delivered through the fluid metering device, fluid delivery data is delivered to a user via a user interface. A heater is provided within the housing to prevent freezing of fluid within the device.
As fluid is delivered through the fluid metering device, fluid delivery data is delivered to a user via a user interface. A heater is provided within the housing to prevent freezing of fluid within the device.
Description
FLUID METERING DEVICE
TECHNICAL FIELD
[0001] The present invention relates to the measurement of fluid being delivered to a work site. In particular, some embodiments of the present invention provide apparatus that may be applied to measure quantities of water delivered to a reservoir at a work site for use in hydraulic fracturing. The apparatus has particular application at remote sites where vandalism and/or freezing are problems.
BACKGROUND OF THE INVENTION
TECHNICAL FIELD
[0001] The present invention relates to the measurement of fluid being delivered to a work site. In particular, some embodiments of the present invention provide apparatus that may be applied to measure quantities of water delivered to a reservoir at a work site for use in hydraulic fracturing. The apparatus has particular application at remote sites where vandalism and/or freezing are problems.
BACKGROUND OF THE INVENTION
[0002] Hydraulic fracturing is a technique for retrieving oil and gas from deep underground. Pressurized fluid is pumped underground to fracture underground formations to facilitate withdrawing oil and gas through wells. A major component of the pressurized fluid pumped underground is water. It is often necessary to transport water to the hydraulic fracturing site from a remotely located water reserve. Water is often transported by truck and is stored at a reservoir at the hydraulic fracturing site.
[0003] The reservoir may be a C-ring. C-rings are synthetically lined corrugated steel ring systems. A liner covers the area inside the steel ring, extends up the wall of the steel ring and is attached onto the outside of the wall. The c-ring is uncovered. Water can be delivered through pipes that run up the side of the c-ring and curve over the edge of the c-ring. These pipes are commonly referred to as "candy canes". Truckers deliver water by connecting their trucks to the candy canes using flexible hoses.
[0004] It is common for truckers transporting water to be paid in proportion to the volume of water they deliver to the hydraulic fracturing site. However, it is uncommon for the volume of water to be accurately measured. Typically, water deliveries are measured using an honour system. Minimal effort is made to confirm that a truck is fully loaded when it delivers fluid to a work site. Accordingly, it is possible for truckers to be either under paid if their delivery was underestimated or overpaid if their truck was not full.
It is therefore beneficial for both the truckers and the hydraulic fracturing company to accurately measure the quantity of water being delivered.
It is therefore beneficial for both the truckers and the hydraulic fracturing company to accurately measure the quantity of water being delivered.
[0005] Hydraulic fracturing sites are remotely located. For example, hydraulic fracturing sites are located in remote areas of northern Alberta, Colorado and Texas. Due to their remote locations, many hydraulic fracturing sites have limited or no access to utilities and cellular services.
[0006] Frequently, hydraulic fracturing occurs in locations where the temperature is prone to drop below freezing. If a candy cane is not emptied of all water after delivery, the water may freeze. Frozen water can block the candy cane or hose, thereby preventing future deliveries of water. Even worse, it is possible for the freezing water to cause the pipe or hose to rupture, thereby causing longer delays for repair.
[0007] W02013/131128 discloses an apparatus for tracking waste water from coal seam gas production. The apparatus consists of a trailer chassis that supports an electric motor that drives a pump. The pump is connected to an inlet manifold having inlet stubs and an outlet manifold having outlet stubs. Each of the inlet and outlet stubs has an electrically-operated valve. Sensors sense volume flow and composition data (i.e. water quality). A
control means operates an electric motor for the pump and electric valves to cause the transfer of water. Data and operations are entered via a touch screen graphical user interface.
A data processing means generates a real-time report of the data which is transmitted to a remote database. Power is provided by a diesel engine connected to an alternator and a cell bank.
control means operates an electric motor for the pump and electric valves to cause the transfer of water. Data and operations are entered via a touch screen graphical user interface.
A data processing means generates a real-time report of the data which is transmitted to a remote database. Power is provided by a diesel engine connected to an alternator and a cell bank.
[0008] There remains a need for practical fluid metering devices that that may be applied for measuring water deliveries. There is a particular need for such devices that can be used in sub-freezing temperatures and that are theft and vandalism resistant.
SUMMARY OF THE INVENTION
SUMMARY OF THE INVENTION
[0009] The invention has a number of aspects. Some aspects provide fluid metering devices, other aspects provide methods for measuring fluid being delivered.
Certain embodiments are applicable to measure quantities of water delivered to a reservoir at a work site for use in hydraulic fracturing.
Certain embodiments are applicable to measure quantities of water delivered to a reservoir at a work site for use in hydraulic fracturing.
[0010] In some embodiments, the fluid metering device includes one or more hangers for suspending the fluid metering device from a reservoir or like structure.
The one or more hangers can be adjustable to fit different reservoirs and can be removable for compact transportation of the fluid metering device.
The one or more hangers can be adjustable to fit different reservoirs and can be removable for compact transportation of the fluid metering device.
[0011] In some embodiments, the fluid metering device further comprises a temperature sensor and heater for maintaining a temperature inside the housing within a suitable range to prevent fluid from freezing and damaging the device. The suitable range may be a range above the freezing temperature of the fluid being measured. The housing is insulated to improve energy efficiency.
[0012] In some embodiments, the fluid metering device further includes a system for measuring the fluid level within a reservoir. If the reservoir hits a critical level, users (either local or remote) may be notified that the fluid has reached the critical level.
[0013] In some embodiments, the fluid measuring device has a housing with a fluid input pipe partially extending from the housing and fluidly connected to an outlet pipe by way of a fluid meter. The fluid measuring device further can include a user interface for delivering information about the volume of fluid being delivered and for inputting information.
[0014] In some embodiments, the fluid metering device further comprises at least one door for accessing the interior components. The one or more doors are lockable to prevent tampering with the fluid metering device.
[0015] In some embodiments, the fluid metering device further comprises a computer casing for storing and protecting certain components within the housing. The components protected by the computer casing may include a controller, display screen, user input interface and printer. Features of the computer casing may protect the contents of the computer casing from overheating, freezing, electrical shock, fluid and accidental contact.
[0016] In some embodiments, the fluid metering device further includes one or more of a GPS unit, moisture sensors for detecting leaks within the housing and lighting to aid users working on components within the housing.
[0017] Another aspect provides a method for metering fluid. The method includes transporting fluid to a storage site, connecting the fluid transport to a fluid metering device, delivering fluid through the fluid metering device into a reservoir, measuring the volume of fluid delivered through the fluid metering device, transmitting the measurements to a user interface and draining excess fluid from the fluid metering device.
[0018] Further embodiments of the invention and features of example embodiments are illustrated in the accompanying drawings and/or described in the following description.
BRIEF DESCRIPTION OF THE DRAWINGS
BRIEF DESCRIPTION OF THE DRAWINGS
[0019] The present invention will now be described by way of illustrative examples, with reference to the accompanying drawings, in which:
[0020] Figure 1 is an isometric view of one embodiment of the fluid metering device as it would hang on the side of a fluid reservoir.
[0021] Figure 2 is a front plan view of the fluid metering device of Figure 1.
[0022] Figure 3 is an isometric view of the fluid metering device of Figure 1 in place on a reservoir and connected to a tanker truck by way of a flexible hose.
[0023] Figure 4 is a block diagram showing a system according to an example embodiment.
DESCRIPTION OF PREFERRED EMBODIMENTS
DESCRIPTION OF PREFERRED EMBODIMENTS
[0024] Throughout the following description, specific details are set forth in order to provide a more thorough understanding of the invention. However, the invention may be practiced without these particulars. In other instances, well known elements have not been shown or described in detail to avoid unnecessarily obscuring the invention.
Accordingly, the specification and drawings are to be regarded in an illustrative, rather than a restrictive sense.
Accordingly, the specification and drawings are to be regarded in an illustrative, rather than a restrictive sense.
[0025] One aspect of the invention provides fluid metering devices for measuring an amount of fluid being delivered. One example fluid metering device 10 is depicted in Figure 1. A non-limiting example application for fluid metering devices is tracking water delivered to a hydraulic fracturing site.
[0026] Fluid metering device 10 can be hung from the side of a fluid reservoir 42, such as a c-ring, at the hydraulic fracturing site as depicted in Figure 2. Fluid metering device 10 can be raised either by hand, crane or by fork lift. Feet 38 on housing 12 may be configured to engage the forks on a forklift. Feet 38 may include apertures for receiving the arms of a forklift within feet 38 or feet 38 can be configured to receive the arms of a forklift between feet 38. Fluid metering device 10 is not permanently attached to reservoir 42 and can be removed and transported to a different site. By raising fluid metering device 10 off the ground, fluid metering device 10 is less likely to be in the way of vehicles moving around the work site and is less likely to be damaged. Elevating fluid metering device 10 facilitates drainage of fluid from fluid metering device 10 after use.
[0027] Once in place, a volume of fluid, typically transported by way of tanker truck 40, is delivered through fluid metering device 10 as depicted in Figure 3.
Hose 58 is connected from truck 40 to fluid inlet 16a by way of a fitting such as a camlock fitting, also known as a cam and groove coupling.
Hose 58 is connected from truck 40 to fluid inlet 16a by way of a fitting such as a camlock fitting, also known as a cam and groove coupling.
[0028] To start recording a delivery, the trucker inputs his or her identifying information into user interface 24 by way of a punch code, swipe card, radio activated tag such as RFID or NFC, barcode or any other suitable secure manner. To start the delivery of fluid, valve 16b on inlet pipe 16 is opened to allow fluid to flow through fluid metering device 10. As fluid flows through fluid metering device 10, fluid meter 14 measures the volume of fluid being delivered. The volume measurement is transmitted to controller 44 which displays the volume being delivered on screen 24a in real time.
100291 When the delivery is complete, the trucker can use the pump on his or her truck to ensure that all fluid is removed from outlet pipe 18, inlet pipe 16 and hose 58. Valve 16b is then closed. Any remaining fluid can drip into an optional drip tray (not shown) to avoid ice forming on the ground.
[0030] Printer 26 prints receipts indicating the date, time, place, volume delivered, who made the delivery, and any other necessary information. One receipt may be kept by the driver. Another copy of the receipt may be placed in a receptacle (not shown) near fluid metering device 10 by the trucker or may be automatically stored within housing 12 after printing. The delivery information may also be stored as a backup on a data store accessible =
to controller 44. The delivery information may be transmitted to a central server either manually or automatically. The delivery information may be sent via transmitter 56, either by wired connection or wirelessly. In circumstances where there is no wired transmission line, installation of a wired transmission line is not feasible and cellular network coverage is available, transmitter 56 may be configured to transmit data by way of cellular network. In circumstances where there is no cellular network coverage, or when cellular network coverage is temporarily unavailable, transmitter 56 may be configured to transmit data by way of high powered radio or satellite data transmission. After printing receipts, fluid metering device 10 can enter a sleep mode or can be turned off completely to save energy.
[0031] Figure 1 depicts hangers 20 attached to housing 12 to allow fluid metering device 10 to hang off of reservoir edge 42a or another suitable edge. In Figure 1, two hangers 20a and 20b extend vertically from housing 12 and are formed to have a hook-like shape with distal ends that point generally downward. In other embodiments, a single hanger or more than two hangers may be provided. Providing two or more hangers 20 spaced apart from each other adds stability to fluid metering device 10 when hanging from reservoir edge 42a.
Hangers 20a and 20b may have substantially horizontal portions to fit over reservoir edge 42a. The substantially horizontal portion may be long enough to fit different sizes of reservoir edges 42a. In some embodiments, the horizontal element of hangers 20a and 20b is approximately five to twenty inches (approximately 12cm to 50cm). In some embodiments, the horizontal elements meet the vertical elements at right angle joints while in other embodiments the horizontal element forms part of a curved hook-like shape. The substantially horizontal element is not necessarily a distinct portion of hangers 20 but may be part of a continuously curved portion.
[0032] Hangers 20 may be made of the same material as housing 12.
Alternatively, hangers 20 may be made out of another suitable material such as, for example, aluminum, steel, polymer, composite or a combination of materials. Hangers may be square in cross-section. Alternatively, hangers 20 may be round or take another polygonal shape in cross section. In some embodiments, hangers 20 have an "1" shaped cross-section. The cross-section of hangers 20 may change along the length of hangers 20. Hangers 20 may be hollow, solid or may have another suitable construction. Hangers 20 may have rubber or elastomeric coatings on at least one side to protect reservoir 42 and prevent damage to the liner of a c-ring.
[0033] Braces may be provided to increase stability of fluid metering device 10 when fluid metering device 10 is hanging off a reservoir. Braces may comprise additional aluminum tubing or another suitable material attached to two or more hangers 20. Braces may be attached by welding or another suitable method such as using bolts.
Braces may have a similar cross-section to hangers 20 or may have different cross-sections. In the illustrated embodiment, hangers 20a and 20b are connected by braces 20c. Braces 20c prevent housing 12 from swaying and relieve unnecessary stress on the connection between hangers 20a, 20b and housing 12. Braces 20c can also be attached to additional supports 18c that support outlet pipe 18 to relieve stress on outlet pipe 18. In the illustrated embodiment, outlet pipe 18 and hanger structure 20 are attached by way of braces 20c and supports 18c to provide a single unit.
[0034] Outlet pipe 18 has coupling joint 18b and hangers 20a and 20b have coupling joints 20a-1 and 20b-1 respectively. Coupling joints 20a-1, 20b-1 and 18b can be pairs of flanges attached by a plurality of bolts, as illustrated in Figure 1. If all three coupling joints are de-coupled, hanger structure 20 and a portion of outlet pipe 18 can be removed from fluid metering device 10. In this configuration, fluid metering device 10 can fit in a pick-up truck or similarly-sized vehicle for compact transportation. Other structures for de-coupling these components could also be employed such as threaded couplings or a combination of latches.
[0035] In some embodiments, fluid metering device 10 hangs approximately three feet above the ground to be easily accessible by truckers and other users. To allow fluid metering devices 10 to be hung from reservoirs of various heights, some embodiments provide hangers 20 that are adjustable in length.
[0036] In some embodiments, hangers 20 are replaceable with hangers 20 of different lengths. When hangers 20 and outlet pipe 18 are decoupled, additional lengths of hanger and outlet pipe can be inserted for use with a taller reservoir, or shorter hangers 20 and shorter outlet pipe 18 can be used in the case of a shorter reservoir.
[0037] In other embodiments, hangers 20 are telescopic. Hangers 20 may have telescopic tubing or pup joints to provide approximately 12 to 24 inches of adjustment. Cotter pins or the like may be used to secure the telescopic tubing. This facilitates using fluid metering device 10 at different sites. Alternatively, hangers 20 can be removed completely and fluid metering device 10 can be placed on the ground, supported by feet 38. This may require a longer outlet pipe 18 in some cases.
[0038] In some embodiments, hangers 20 are lockable to reservoir 42.
Locking hangers 20 to reservoir may be accomplished by locking hangers 20 through one or more apertures near reservoir edge 42a, by clamping hangers 20 around reservoir edge 42a or by another suitable means. In this embodiment, fluid measuring device 10 as a whole cannot be removed from reservoir 42 without unlocking hangers 20. To prevent housing 12 being removed from hangers 20 by releasing coupling joints 18b, 20a-1 and 20b-1, locking nuts or another suitable locking mechanism can be provided to lock joints 18b, 20a-1 and 20b-1.
[0039] To prevent freezing of fluid within inlet pipe 16 or outlet pipe 18 and freezing of the electronics, heater 28 is provided within housing 12. Heater 28 is thermostatically controlled to maintain a temperature within a suitable range. The suitable range may be a range above the freezing temperature of the fluid being measured. For example, when water is being measured, the temperature within housing 12 should be maintained above zero degrees Celsius, preferably by at least a couple degrees so that minor fluctuations present a lesser risk. Heater 28 can be operated by a controller or processor. In some embodiments, heater 28 is operated by controller 44.
[0040] Heater 28 may be connected to a temperature sensor 50. Temperature sensor 50 may be connected to controller 44 to provide a temperature value for the purpose of operating heater 28. Temperature sensor 50 may be located near the pipes so that the temperature being controlled is that of the pipes. Heater 28 may be located near the pipes that travel through housing 12 to provide the greatest amount of heat to the pipes while being located away from the electronics so as not to overheat the electronics. Such a configuration is illustrated in Figure 1.
[0041] Various types of heaters can be employed such as, but not limited to, forced air heaters, infrared heaters, propane heaters, natural gas heaters, or geothermal heaters. Heaters can also be employed on or within the pipes. For example, heating tape can be applied to the pipes. A fan may be provided to circulate air throughout housing 12 and venting may be provided if necessary.
[0042] In one embodiment, heater 28 is an electric radiative or an electric convection heater. Heater 28 is located at one side of housing 12, near inlet pipe 16 and outlet pipe 18 and away from computer casing 22. Heater 28 may be raised from the bottom of housing 12 to decrease the risk of liquid contacting heater 28. Heater 28 is powered by power source 52.
Heater 28 is connected to controller 44. Controller 44 is configured to receive a temperature measurement from temperature sensor 50 and compare the temperature measurement to the suitable temperature range. If the temperature measurement is too low, controller 44 instructs heater 28 to turn on. If heater 28 is already on, controller 44 instructs heater 28 to increase heat output. Controller 44 regularly receives temperature measurements from temperature sensor 50. Once the temperature is within the suitable range, controller 44 instructs heater 28 to decrease heat output or stop heating altogether.
[0043] To improve energy efficiency, housing 12 may be thermally insulated.
Insulating materials such as foam, fiberglass, reflective materials or natural fibers may be provided to line the walls of housing 12 or may be provided within the walls of housing 12.
Doors 32a and 32b may have seals for thermal insulation and to prevent inclement weather from damaging the contents of housing 12. In some embodiments, housing 12 is insulated by 1.5 inch thick foam with an R6 insulation rating.
[0044] In some embodiments, fluid metering device 10 further includes fluid level measuring device 36 for measuring the fluid level in fluid reservoir 42 and alerting a site operator when the fluid level reaches specified levels or a critical level.
Fluid level measuring device 36 may be supported by outlet pipe 18. For example, as illustrated in Figure 1, fluid level can be measured by float 36a hanging on cable 36b from outlet pipe 18 into fluid reservoir 42. Movement of float 36a may be measured by, for example, any one of mechanical components such as cables, tapes, pulleys and gears or magnets.
Alternatively, fluid level measuring device 36 can be, for example, any one of a hydrostatic device, load cell, magnetic level gauge, ultrasonic level transmitter, laser level transmitter, radar level transmitter or other fluid level measuring devices. Fluid level measuring device 36 may be configured to send a fluid level measurement to controller 44. Controller 44 may compare that measurement value to a table of critical levels. If the fluid level reaches a critical level, an alert can be sent to the trucker and/or the site operator by way of transmitter 56. Alarm light 34 or a sound can be activated to alert others. In this way, it is possible to avoid overfilling reservoir 42 and having fluid leak over reservoir edge 42a.
[0045] In some embodiments, the fluid level in reservoir 42 and the volume of fluid to reach a critical level can be displayed on screen 24a. Controller 44 stores a data value provided by fluid level measuring device 36. The fluid level data value can be updated in real time or at regular intervals. Controller 44 is configured to compare the data value provided by fluid level measuring device 36 to the capacity of fluid reservoir 42 and the approximate volume of a single fluid delivery. Controller 44 then provides an estimate of how many fluid deliveries are required to fill reservoir 42. Additionally, controller 44 can be configured to account for a historical rate or predicted future rate at which fluid is removed from reservoir 42 to provide an estimate of how many deliveries are required per day or week to maintain a sufficient volume of fluid within reservoir 42. The historical rate can be calculated in any of various ways, such as by calculating an average past rate. The predicted rate can be calculated in any of various ways, such as by using linear extrapolation. In this way, a site operator can accurately determine how many trucks should be ordered to the site.
[0046] In the embodiment shown in Figure 1, housing 12 partially encloses inlet pipe 16. Inlet pipe 16 defines fluid inlet 16a which extends out of housing 12 and is controlled by fluid valve 16b. In some embodiments, fluid inlet 16a and fluid valve 16b are within housing 12. It may be beneficial to provide fluid inlet 16a and fluid valve 16b within housing 12 to prevent freezing of fluid inlet 16a and fluid valve 16b. In some embodiments, fluid inlet 16a is accessible by door 32. Fluid valve 16b can be at least any of a ball valve, disc valve, choke valve, diaphragm valve, gate valve, glove valve, knife valve and butterfly valve. Fluid valve 16b can be operated manually, can be motorized and controlled by controller 44 or can be operated in both ways. A screen for preventing debris from reaching fluid meter 14 is located within fluid inlet 16a. The screen may have fine apertures or large apertures.
One embodiment has apertures of 1/8 of an inch to prevent larger debris from entering fluid meter 14. Fluid inlet 16a can be connected to a fluid source, such as truck 40, by way of hose 58 or other suitable means.
[0047] In the embodiment shown in Figure 1, housing 12 partially encloses outlet pipe 18. Outlet pipe 18 extends out of housing 12 and terminates at fluid outlet 18a. In the Figure 1 embodiment, outlet pipe 18 extends generally vertically from housing 12 and curves such that fluid outlet 18a points generally downward. In some embodiments, fluid outlet 18a is angled at approximately 45 degrees to the horizontal. As illustrated in Figures 2 and 3, outlet pipe 18 extends up over reservoir edge 42a before it extends horizontally and then curves downward such that fluid can be delivered over reservoir edge 42a at a sufficient height above reservoir 42 so that fluid will never enter fluid outlet 18 from reservoir 42. In some embodiments, the outlet pipe 18 reaches further towards the center of reservoir 42 than hangers 20 so that fluid is delivered over reservoir edge 42a. To accommodate different sizes of reservoir edges 42a, some embodiments may have fluid outlets 18 with a longer or shorter reach. Inlet pipe 16 and outlet pipe 18 are fluidly connected within housing 12 by way of fluid meter 14. In some embodiments inlet pipe 16 and outlet pipe 18 are angled downward toward fluid inlet 16a to provide better drainage, thereby avoiding fluid getting trapped in fluid metering device 10 where fluid could freeze.
[0048] In some embodiments of fluid metering device 10, inlet pipe 16 and outlet pipe 18 are aluminum pipes. Alternatively, polyvinyl chloride (PVC), ductile iron, steel, cast iron, polypropylene, polyethylene, copper or lead pipes can be used. In some circumstances, it may be beneficial to use pipes of a first material that are lined with a second material to prevent corrosion.
[0049] In some embodiments of fluid metering device 10, inlet pipe 16 and outlet pipe 18 have diameters of four inches. Various diameters can be used. For example, larger diameter pipes may be beneficial when larger amounts of fluid are being delivered. Both inlet pipe 16 and outlet pipe 18 can use camlock fluid fittings or other suitable fluid fittings to connect to hoses. Outlet pipe 18 may be connected to a flexible hose if reservoir 42 is not open air and a direct connection is required.
[0050] In some embodiments, fluid metering device 10 includes housing 12.
Housing 12 can be made, for example, of any of aluminum, steel, plastic, composite materials and other robust and lightweight materials. Housing 12 can have drainage features such as holes or drains arranged in its bottom to allow any excess fluid or condensation within the housing to drain.
[0051] In the embodiment shown in Figure 1, the interior of housing 12 is accessible by doors 32a and 32b. Doors 32a and 32b are on one face of housing 12 and open opposite each other by way of vertical hinges. Doors 32a and 32b may be locked using any of various security means to prevent tampering with the contents of housing U. The security means may be a lock openable with a key, code or a security reader 48. Security reader 48 may be configured to read, for example, any of a barcode, fob, RFID, NFC, WiFi, Bluetooth, or other secure means. The security means can be a separate commercially available lock or can be integrated with fluid metering device 10. Alternatively, access to the interior of housing 12 can be provided by at least any of sliding doors, doors with horizontal hinges, a removable face, or other means. Doors 32a and 32b can be located on different faces of housing 12.
[0052] In some embodiments, such as is illustrated in Figures 1 to 3, door 32a can provide a user with visual or physical access to screen 24a, user input interface 24b and printer 26. In other embodiments, access to screen 24a, user input interface 24b and printer 26 may be on another face of housing 12 or may be accessible by opening door(s) 32.
Housing 12 can also include a window to provide visual access to user interface 24. Such a window can be made of a suitable clear material such as a thermoplastic or polycarbonate.
[0053] Various types of commercially available fluid meters exist and are suitable for use as fluid meter 14. In one particular embodiment, fluid meter 14 is a turbine flow meter.
Other types of flow meters that could be used include, but are not limited to, mechanical flow meters such as piston meters, oval gear meters, helical gear meters, nutating disk meters, variable area meters, Woltmann meters, single jet meters, and multiple jet meters; pressure-based meters such as venturi meters, orifice plates, dall tubes, pilot tubes, and cone meters;
and optical flow meters. Fluid meter 14 provides an output to controller 44 for display on screen 24a and for printing by printer 26. The output can comprise either or both of the volume of fluid delivered and the rate at which fluid is being delivered.
[0054] In some embodiments, computer casing 22 contains controller 44 and houses display screen 24a, user input interface 24b, and printer 26. Computer casing 22 provides access to display screen 24a, user input interface 24b and printer 26 while protecting the contents of computer casing 22 from overheating, freezing, electrical shock, liquid, and accidental contact. This protection is achieved by way of features such as fans, venting.
thermal insulation, electrical insulation, seals to prevent intrusion by liquid, and shock absorbing materials. The fan, venting, and thermal insulation can work in conjunction with temperature sensor 50 within computer casing 22 to ensure the electrical components are maintained within an optimal operating temperature range. The electrical insulation lines computer casing 22 to prevent a short circuit from damaging the contents of computer casing 22 or from injuring a user. Computer casing 22 is sealed to prevent any fluid leaks within housing 12 from damaging the contents of computer casing 22. Shock absorbing materials limit damage to the electrical components if fluid metering device 10 is struck or dropped accidentally. Additional cooling features such as a heatsink or a coolant system can be provided.
[0055] In Figure 1, user interface 24 is depicted as comprising display screen 24a and a plurality of buttons for inputting data, such as a user identifying code.
Alternatively, user interface 24 could include any combination of a display screen, a touch screen, an alphanumeric keyboard, a card reader, a barcode scanner, an RFID or NFC
scanner or any other means for securely identifying a trucker and inputting commands. In one embodiment.
display screen 24a is accompanied by a single button for starting fluid metering device 10, stopping fluid metering device 10 and resetting fluid metering device 10.
Display screen 24a may present a user with information regarding the date, time, fill level of reservoir 42, volume of fluid being delivered, rate at which fluid is being delivered, name of truck driver, temperature, and instructions for how to operate fluid metering device 10.
[0056] In some embodiments, user interface 24 provides a system for delivering suggestions, complaints and other messages to a site operator. A message delivery system could allow a user to conveniently alert a site operator in various situations such as when fluid metering device 10 is damaged, when fluid metering device 10 needs to be relocated or when the fluid level of reservoir 42 is at a critical level. Messages can be in any of various formats such as text, audio and video. Messages can be sent via transmitter 56, either wirelessly or by wired connection.
[0057] Fluid metering device 10 is powered by power source 52. Power source 52 can be an external source, can be self-sufficient or may require periodic replacements. Possible external sources include natural gas, propane or electricity. Self-sufficient options include solar power, wind power, and turbine power from the fluid flowing through the pipes.
Periodically replaced options include batteries and replaceable fuel tanks filled with fuels such as natural gas or propane. In embodiments using natural gas or propane, a generator may be provided and controlled by controller 44. In embodiments where a battery is used, it may be advantageous to locate the battery within computer casing 22 to protect it from overheating, freezing, electrical shock, liquid, and accidental contact.
Alternatively a battery could be contained within a separate protective housing with similar features to computer casing 22. Electronics are attached using ground fault interrupter plugs that monitor the current and trip the circuit if a short is detected.
[0058] In one embodiment, power source 52 comprises one or more solar cell arrays.
The solar cell array(s) are provided in conjunction with a battery to store energy captured by the solar cell array(s). The solar cell array(s) may be located on top of housing 12, attached to fluid outlet 18, attached to hangers 20 or may be provided remotely from fluid metering device 10. The battery stores energy collected by the solar cell array(s) for times when the sun is inaccessible, such as at night. The fluid metering device can be located to take advantage of the maximum sun light and the reflection of light off the contents of reservoir 42. In some embodiments, the solar cell array(s) may be configured to move to receive maximum exposure to the sun as it moves across the sky. Using solar power is beneficial since some remote sites where fluid metering devices 10 are used may not have convenient access to electricity.
[0059] In some embodiments of fluid metering device 10, one or more moisture sensors 54 are provided to detect moisture within housing 12 as could occur, for example, in the case of a leak in one of inlet pipe 16, outlet pipe 18, fluid meter 14 or housing 12. The moisture sensors 54 may be connected to controller 44. Controller 44 can cause an alert to be displayed on display screen 24a, or a sound to be played when a critical level of moisture is detected.
The critical level of moisture can be set to accommodate moisture levels expected to arise from naturally occurring moisture in the air and an acceptable level of condensation within housing 12. In some embodiments, controller 44 can cause valve 16b to shut off automatically to prevent any additional fluid from leaking into housing 12. Detecting a leak within housing 12 and shutting off the flow of fluid can help to protect the electronic components of fluid metering device 10. Additionally, in some embodiments, a light is provided within housing 12 to aid in finding where a leak is coming from and to provide light during repairs or replacing of parts such as a battery.
[0060] In some embodiments, a locating device such as GPS receiver 46 may be provided. The spatial coordinates of each delivery can be stored by controller 44, transmitted to an operator and/or printed on the receipt. GPS receiver 46 ensures that deliveries are made at the correct site and facilitates tracking of fluid deliveries. GPS receiver 46 also facilitates tracking fluid metering device 10 if it is stolen or misplaced.
[0061] Some embodiments of fluid metering device 10 include a pump for when the onboard pump of truck 40 is insufficient. For example, a pump may be provided to move fluid at a higher rate or to a greater height in the case of a tall reservoir. A
fluid pump can be provided within housing 12 or between truck 40 and fluid inlet 16a. The pump may rely on power source 52 or its own separate power source.
[0062] In some embodiments, a plurality of fluid metering devices 10 are connected to a central server. The central server receives, for example, data such as the volume of fluid delivered, who delivered the fluid, time of delivery and delivery location.
The central server stores records of each delivery for the purposes of paying truckers. The central server may also receive alerts when the temperature within a particular fluid metering device 10 is outside of the set range, if a reservoir 42 is overflowing or if the fluid level reaches a critical level in a particular reservoir 42. The central server may keep track of such data automatically or may require manual input and oversight. Using the data received, the central server may be configured to calculate how much each trucker should be paid for their deliveries and may create billing materials to facilitate payment of the truckers. The central server may be configured to track statistics such as how much each trucker has delivered to each site historically, how much fluid each site is receiving and using and other valuable information.
[0063] Figure 4 schematically depicts one embodiment of the relationships between controller 44 and the elements of fluid metering device 10 to which controller 44 is connected. Controller 44 receives information from security reader 48 and user interface 24.
Based on the information from security reader 48 and user interface 24, controller 44 may be configured to begin recording a fluid delivery. Controller 44 receives data from GPS receiver 46, fluid level measuring device 36 and flow meter 14 and sends that data to any or all of display 24a, transmitter 56 and printer 24b. Controller 44 may transfer the raw data or may be configured to analyze the data and provide additional information to any or all of display 24a, transmitter 56 and printer 24b. For example, controller 44 may receive data from fluid level measuring device 36 and may then calculate how much fluid can be delivered to reservoir 42 before reservoir 42 overflows. Controller 44 also receives information from moisture sensor 54. Based on information from moisture sensor 54, controller 44 may instruct valve 16b to shut or open. Controller 44 may also instruct alert light 34 to activate based on the information from moisture sensor 54. Controller 44 receives information from temperature sensor 50. Based on the information from temperature sensor 50, controller 44 instructs heater 28 to vary its output, turn on or turn off. In this embodiment, controller 44 is depicted as a single controller. Alternatively, controller 44 can be replaced with a plurality of controllers to perform the same functions.
100641 In one embodiment, fluid metering device 10 is provided to measure water delivered to a work site. Fluid metering device 10 is delivered by truck in two pieces. The first piece comprises housing 12 and its contents. The second piece comprises hangers 20, outlet pipe 18 and solar cell arrays for powering fluid metering device 10.
The two pieces are reattached before being lifted to hang off reservoir edge 42a. Hangers 20 and outlet pipe 18 are selected or adjusted to the correct length for reservoir 42 such that housing 12 will hang approximately three feet from the ground. To raise fluid metering device 10, the arms of a forklift are positioned under housing 12 and between feet 38. Fluid metering device 10 is lifted such that hangers 20 hook over reservoir edge 42a and housing 12 hangs approximately three feet from the ground. Hangers 20 are locked to reservoir 42 to prevent theft.
100651 Prior to receiving water deliveries, fluid level measuring device 36 determines the fluid level in reservoir 42. The fluid level is sent to controller 44 which determines how much water can be delivered before the fluid level reaches a critical level.
This volume is calculated in relation to how many full trucks can make deliveries as well as a volume in liters, gallons or an equivalent unit.
100661 Still prior to receiving water deliveries, temperature sensor 50 determines the temperature within housing 12. If the temperature is below a threshold of, for example, 3 degrees Celsius, water cannot be delivered and heater 28 must be activated.
Temperature sensor 50 continues to take readings and heater 28 remains on until the temperature is sufficiently above the minimum threshold. The heater is reactivated if the temperature drops too close to the minimum threshold. Water deliveries are automatically cancelled by controller 44 shutting valve 16b when the temperature drops below the minimum threshold.
[0067] To receive a water delivery, the trucker attaches hose 58 from truck 40 to fluid inlet 16a by way of a camlock connection. Fluid inlet valve 16b is closed such that no water can be delivered without being accounted for. The trucker then inserts his/her personal pin by way of user interface 24b. Display screen 24a indicates to the trucker that he/she has successfully logged in and that the trucker should push a start button on user interface 24b to begin a delivery. When the start button is pushed, controller 44 instructs valve 16b to open and fluid meter 14 to begin recording the delivery.
[0068] Display 24a indicates how much room is left in reservoir 42 for additional water deliveries, the temperature within housing 12, how much battery power is available, whether fluid metering device 10 is connected to the central server, the rate at which fluid is being delivered and how much fluid has been delivered in this delivery. Display 24a also instructs the trucker to press the stop button when the delivery is finished. When the delivery is finished, the trucker removes any additional water from fluid metering device using the pump on his/her truck 40. The driver then removes hose 58 from inlet pipe 16 and the last bit of water can drip onto the ground or into a drip tray.
[0069] Printer 26 prints a receipt for the driver that provides information such as the date, place, time, amount of water delivered, rate at which water was delivered and the driver's identification number. That information is stored in controller 44 and sent by transmitter 56 to the central server. A carbon copy of the receipt is also stored within fluid metering device 10. This way, the information is not lost. After the receipt is printed, fluid measuring device 10 enters a sleep mode to conserve energy. During sleep mode, the temperature is still maintained but components such as user interface 24 and fluid meter 14 are not provided with power.
[0070] During deliveries, moisture sensor 54 is configured to determine if there is a leak within housing 12. If there is a leak within housing 12, moisture sensor 54 sends a signal to controller 44. Upon receipt of the signal from moisture sensor 54, controller 44 instructs valve 16b to close thereby avoiding further damage to the internal components of housing 12.
Similarly, if fluid level measuring device 36 determines that the fluid level has reached a critical height, controller 44 will instruct valve 16b to close to avoid overflowing reservoir 42.
[0071] User interface 24 can also provide the trucker with a means to communicate with the site operator. The trucker can provide comments along with his/her delivery to alert the site operator if the fluid metering device 10 is damaged, should be relocated, isn't functioning properly, etc.
[0072] When the trucker is finished the delivery, the trucker takes a copy of the receipt so that he/she can tally his/her deliveries to get paid. The trucker's tally is checked against the records of the site operator to ensure that all payments are accurate. This ensures reliable and accurate payment for water deliveries to the work site.
[0073] The above description provides one or more controllers 44. The one or more controllers 44 may comprise one or more processors, microprocessors, logic circuits, configurable logic circuits, digital signal processors, or the like configured to receive data and/or commands and to control the operation of an above-mentioned element.
The processor or equivalent component may execute software instructions which cause the processors to perform an element of the invention. For example, a processor might receive a temperature measurement from temperature sensor 50 and send instructions to heater 28 to turn on.
Interpretation of Terms [0074] Unless the context clearly requires otherwise, throughout the description and the claims:
= "comprise", "comprising", and the like are to be construed in an inclusive sense, as opposed to an exclusive or exhaustive sense; that is to say, in the sense of -including, but not limited to";
= "or", in reference to a list of two or more items, covers all of the following interpretations of the word: any of the items in the list, all of the items in the list, and any combination of the items in the list; and = the singular forms "a", "an", and "the" also include the meaning of any appropriate plural forms.
[0075] Words that indicate directions such as "vertical", "transverse", "horizontal", "upward", "downward", "forward", -backward", "inward", "outward", "vertical", "transverse", "left", "right", "front", -back", "top", -bottom", "below-, -above", -under-, and the like, used in this description and any accompanying claims (where present), depend on the specific orientation of the apparatus described and illustrated. The subject matter described herein may assume various alternative orientations. Accordingly, these directional terms are not strictly defined and should not be interpreted narrowly.
[0076] Specific examples of systems, methods and apparatus have been described herein for purposes of illustration. These are only examples. The technology provided herein can be applied to systems other than the example systems described above. Many alterations, modifications, additions, omissions, and permutations are possible within the practice of this invention. This invention includes variations on described embodiments that would be apparent to the skilled addressee, including variations obtained by: replacing features, elements and/or acts with equivalent features, elements and/or acts; mixing and matching of features, elements and/or acts from different embodiments; combining features, elements and/or acts from embodiments as described herein with features, elements and/or acts of other technology; and/or omitting combining features, elements and/or acts from described embodiments.
[0077] It is therefore intended that the following appended claims and claims hereafter introduced are interpreted to include all such modifications, permutations, additions, omissions, and sub-combinations as may reasonably be inferred. The scope of the claims should not be limited by the preferred embodiments set forth in the examples, but should be given the broadest interpretation consistent with the description as a whole.
100291 When the delivery is complete, the trucker can use the pump on his or her truck to ensure that all fluid is removed from outlet pipe 18, inlet pipe 16 and hose 58. Valve 16b is then closed. Any remaining fluid can drip into an optional drip tray (not shown) to avoid ice forming on the ground.
[0030] Printer 26 prints receipts indicating the date, time, place, volume delivered, who made the delivery, and any other necessary information. One receipt may be kept by the driver. Another copy of the receipt may be placed in a receptacle (not shown) near fluid metering device 10 by the trucker or may be automatically stored within housing 12 after printing. The delivery information may also be stored as a backup on a data store accessible =
to controller 44. The delivery information may be transmitted to a central server either manually or automatically. The delivery information may be sent via transmitter 56, either by wired connection or wirelessly. In circumstances where there is no wired transmission line, installation of a wired transmission line is not feasible and cellular network coverage is available, transmitter 56 may be configured to transmit data by way of cellular network. In circumstances where there is no cellular network coverage, or when cellular network coverage is temporarily unavailable, transmitter 56 may be configured to transmit data by way of high powered radio or satellite data transmission. After printing receipts, fluid metering device 10 can enter a sleep mode or can be turned off completely to save energy.
[0031] Figure 1 depicts hangers 20 attached to housing 12 to allow fluid metering device 10 to hang off of reservoir edge 42a or another suitable edge. In Figure 1, two hangers 20a and 20b extend vertically from housing 12 and are formed to have a hook-like shape with distal ends that point generally downward. In other embodiments, a single hanger or more than two hangers may be provided. Providing two or more hangers 20 spaced apart from each other adds stability to fluid metering device 10 when hanging from reservoir edge 42a.
Hangers 20a and 20b may have substantially horizontal portions to fit over reservoir edge 42a. The substantially horizontal portion may be long enough to fit different sizes of reservoir edges 42a. In some embodiments, the horizontal element of hangers 20a and 20b is approximately five to twenty inches (approximately 12cm to 50cm). In some embodiments, the horizontal elements meet the vertical elements at right angle joints while in other embodiments the horizontal element forms part of a curved hook-like shape. The substantially horizontal element is not necessarily a distinct portion of hangers 20 but may be part of a continuously curved portion.
[0032] Hangers 20 may be made of the same material as housing 12.
Alternatively, hangers 20 may be made out of another suitable material such as, for example, aluminum, steel, polymer, composite or a combination of materials. Hangers may be square in cross-section. Alternatively, hangers 20 may be round or take another polygonal shape in cross section. In some embodiments, hangers 20 have an "1" shaped cross-section. The cross-section of hangers 20 may change along the length of hangers 20. Hangers 20 may be hollow, solid or may have another suitable construction. Hangers 20 may have rubber or elastomeric coatings on at least one side to protect reservoir 42 and prevent damage to the liner of a c-ring.
[0033] Braces may be provided to increase stability of fluid metering device 10 when fluid metering device 10 is hanging off a reservoir. Braces may comprise additional aluminum tubing or another suitable material attached to two or more hangers 20. Braces may be attached by welding or another suitable method such as using bolts.
Braces may have a similar cross-section to hangers 20 or may have different cross-sections. In the illustrated embodiment, hangers 20a and 20b are connected by braces 20c. Braces 20c prevent housing 12 from swaying and relieve unnecessary stress on the connection between hangers 20a, 20b and housing 12. Braces 20c can also be attached to additional supports 18c that support outlet pipe 18 to relieve stress on outlet pipe 18. In the illustrated embodiment, outlet pipe 18 and hanger structure 20 are attached by way of braces 20c and supports 18c to provide a single unit.
[0034] Outlet pipe 18 has coupling joint 18b and hangers 20a and 20b have coupling joints 20a-1 and 20b-1 respectively. Coupling joints 20a-1, 20b-1 and 18b can be pairs of flanges attached by a plurality of bolts, as illustrated in Figure 1. If all three coupling joints are de-coupled, hanger structure 20 and a portion of outlet pipe 18 can be removed from fluid metering device 10. In this configuration, fluid metering device 10 can fit in a pick-up truck or similarly-sized vehicle for compact transportation. Other structures for de-coupling these components could also be employed such as threaded couplings or a combination of latches.
[0035] In some embodiments, fluid metering device 10 hangs approximately three feet above the ground to be easily accessible by truckers and other users. To allow fluid metering devices 10 to be hung from reservoirs of various heights, some embodiments provide hangers 20 that are adjustable in length.
[0036] In some embodiments, hangers 20 are replaceable with hangers 20 of different lengths. When hangers 20 and outlet pipe 18 are decoupled, additional lengths of hanger and outlet pipe can be inserted for use with a taller reservoir, or shorter hangers 20 and shorter outlet pipe 18 can be used in the case of a shorter reservoir.
[0037] In other embodiments, hangers 20 are telescopic. Hangers 20 may have telescopic tubing or pup joints to provide approximately 12 to 24 inches of adjustment. Cotter pins or the like may be used to secure the telescopic tubing. This facilitates using fluid metering device 10 at different sites. Alternatively, hangers 20 can be removed completely and fluid metering device 10 can be placed on the ground, supported by feet 38. This may require a longer outlet pipe 18 in some cases.
[0038] In some embodiments, hangers 20 are lockable to reservoir 42.
Locking hangers 20 to reservoir may be accomplished by locking hangers 20 through one or more apertures near reservoir edge 42a, by clamping hangers 20 around reservoir edge 42a or by another suitable means. In this embodiment, fluid measuring device 10 as a whole cannot be removed from reservoir 42 without unlocking hangers 20. To prevent housing 12 being removed from hangers 20 by releasing coupling joints 18b, 20a-1 and 20b-1, locking nuts or another suitable locking mechanism can be provided to lock joints 18b, 20a-1 and 20b-1.
[0039] To prevent freezing of fluid within inlet pipe 16 or outlet pipe 18 and freezing of the electronics, heater 28 is provided within housing 12. Heater 28 is thermostatically controlled to maintain a temperature within a suitable range. The suitable range may be a range above the freezing temperature of the fluid being measured. For example, when water is being measured, the temperature within housing 12 should be maintained above zero degrees Celsius, preferably by at least a couple degrees so that minor fluctuations present a lesser risk. Heater 28 can be operated by a controller or processor. In some embodiments, heater 28 is operated by controller 44.
[0040] Heater 28 may be connected to a temperature sensor 50. Temperature sensor 50 may be connected to controller 44 to provide a temperature value for the purpose of operating heater 28. Temperature sensor 50 may be located near the pipes so that the temperature being controlled is that of the pipes. Heater 28 may be located near the pipes that travel through housing 12 to provide the greatest amount of heat to the pipes while being located away from the electronics so as not to overheat the electronics. Such a configuration is illustrated in Figure 1.
[0041] Various types of heaters can be employed such as, but not limited to, forced air heaters, infrared heaters, propane heaters, natural gas heaters, or geothermal heaters. Heaters can also be employed on or within the pipes. For example, heating tape can be applied to the pipes. A fan may be provided to circulate air throughout housing 12 and venting may be provided if necessary.
[0042] In one embodiment, heater 28 is an electric radiative or an electric convection heater. Heater 28 is located at one side of housing 12, near inlet pipe 16 and outlet pipe 18 and away from computer casing 22. Heater 28 may be raised from the bottom of housing 12 to decrease the risk of liquid contacting heater 28. Heater 28 is powered by power source 52.
Heater 28 is connected to controller 44. Controller 44 is configured to receive a temperature measurement from temperature sensor 50 and compare the temperature measurement to the suitable temperature range. If the temperature measurement is too low, controller 44 instructs heater 28 to turn on. If heater 28 is already on, controller 44 instructs heater 28 to increase heat output. Controller 44 regularly receives temperature measurements from temperature sensor 50. Once the temperature is within the suitable range, controller 44 instructs heater 28 to decrease heat output or stop heating altogether.
[0043] To improve energy efficiency, housing 12 may be thermally insulated.
Insulating materials such as foam, fiberglass, reflective materials or natural fibers may be provided to line the walls of housing 12 or may be provided within the walls of housing 12.
Doors 32a and 32b may have seals for thermal insulation and to prevent inclement weather from damaging the contents of housing 12. In some embodiments, housing 12 is insulated by 1.5 inch thick foam with an R6 insulation rating.
[0044] In some embodiments, fluid metering device 10 further includes fluid level measuring device 36 for measuring the fluid level in fluid reservoir 42 and alerting a site operator when the fluid level reaches specified levels or a critical level.
Fluid level measuring device 36 may be supported by outlet pipe 18. For example, as illustrated in Figure 1, fluid level can be measured by float 36a hanging on cable 36b from outlet pipe 18 into fluid reservoir 42. Movement of float 36a may be measured by, for example, any one of mechanical components such as cables, tapes, pulleys and gears or magnets.
Alternatively, fluid level measuring device 36 can be, for example, any one of a hydrostatic device, load cell, magnetic level gauge, ultrasonic level transmitter, laser level transmitter, radar level transmitter or other fluid level measuring devices. Fluid level measuring device 36 may be configured to send a fluid level measurement to controller 44. Controller 44 may compare that measurement value to a table of critical levels. If the fluid level reaches a critical level, an alert can be sent to the trucker and/or the site operator by way of transmitter 56. Alarm light 34 or a sound can be activated to alert others. In this way, it is possible to avoid overfilling reservoir 42 and having fluid leak over reservoir edge 42a.
[0045] In some embodiments, the fluid level in reservoir 42 and the volume of fluid to reach a critical level can be displayed on screen 24a. Controller 44 stores a data value provided by fluid level measuring device 36. The fluid level data value can be updated in real time or at regular intervals. Controller 44 is configured to compare the data value provided by fluid level measuring device 36 to the capacity of fluid reservoir 42 and the approximate volume of a single fluid delivery. Controller 44 then provides an estimate of how many fluid deliveries are required to fill reservoir 42. Additionally, controller 44 can be configured to account for a historical rate or predicted future rate at which fluid is removed from reservoir 42 to provide an estimate of how many deliveries are required per day or week to maintain a sufficient volume of fluid within reservoir 42. The historical rate can be calculated in any of various ways, such as by calculating an average past rate. The predicted rate can be calculated in any of various ways, such as by using linear extrapolation. In this way, a site operator can accurately determine how many trucks should be ordered to the site.
[0046] In the embodiment shown in Figure 1, housing 12 partially encloses inlet pipe 16. Inlet pipe 16 defines fluid inlet 16a which extends out of housing 12 and is controlled by fluid valve 16b. In some embodiments, fluid inlet 16a and fluid valve 16b are within housing 12. It may be beneficial to provide fluid inlet 16a and fluid valve 16b within housing 12 to prevent freezing of fluid inlet 16a and fluid valve 16b. In some embodiments, fluid inlet 16a is accessible by door 32. Fluid valve 16b can be at least any of a ball valve, disc valve, choke valve, diaphragm valve, gate valve, glove valve, knife valve and butterfly valve. Fluid valve 16b can be operated manually, can be motorized and controlled by controller 44 or can be operated in both ways. A screen for preventing debris from reaching fluid meter 14 is located within fluid inlet 16a. The screen may have fine apertures or large apertures.
One embodiment has apertures of 1/8 of an inch to prevent larger debris from entering fluid meter 14. Fluid inlet 16a can be connected to a fluid source, such as truck 40, by way of hose 58 or other suitable means.
[0047] In the embodiment shown in Figure 1, housing 12 partially encloses outlet pipe 18. Outlet pipe 18 extends out of housing 12 and terminates at fluid outlet 18a. In the Figure 1 embodiment, outlet pipe 18 extends generally vertically from housing 12 and curves such that fluid outlet 18a points generally downward. In some embodiments, fluid outlet 18a is angled at approximately 45 degrees to the horizontal. As illustrated in Figures 2 and 3, outlet pipe 18 extends up over reservoir edge 42a before it extends horizontally and then curves downward such that fluid can be delivered over reservoir edge 42a at a sufficient height above reservoir 42 so that fluid will never enter fluid outlet 18 from reservoir 42. In some embodiments, the outlet pipe 18 reaches further towards the center of reservoir 42 than hangers 20 so that fluid is delivered over reservoir edge 42a. To accommodate different sizes of reservoir edges 42a, some embodiments may have fluid outlets 18 with a longer or shorter reach. Inlet pipe 16 and outlet pipe 18 are fluidly connected within housing 12 by way of fluid meter 14. In some embodiments inlet pipe 16 and outlet pipe 18 are angled downward toward fluid inlet 16a to provide better drainage, thereby avoiding fluid getting trapped in fluid metering device 10 where fluid could freeze.
[0048] In some embodiments of fluid metering device 10, inlet pipe 16 and outlet pipe 18 are aluminum pipes. Alternatively, polyvinyl chloride (PVC), ductile iron, steel, cast iron, polypropylene, polyethylene, copper or lead pipes can be used. In some circumstances, it may be beneficial to use pipes of a first material that are lined with a second material to prevent corrosion.
[0049] In some embodiments of fluid metering device 10, inlet pipe 16 and outlet pipe 18 have diameters of four inches. Various diameters can be used. For example, larger diameter pipes may be beneficial when larger amounts of fluid are being delivered. Both inlet pipe 16 and outlet pipe 18 can use camlock fluid fittings or other suitable fluid fittings to connect to hoses. Outlet pipe 18 may be connected to a flexible hose if reservoir 42 is not open air and a direct connection is required.
[0050] In some embodiments, fluid metering device 10 includes housing 12.
Housing 12 can be made, for example, of any of aluminum, steel, plastic, composite materials and other robust and lightweight materials. Housing 12 can have drainage features such as holes or drains arranged in its bottom to allow any excess fluid or condensation within the housing to drain.
[0051] In the embodiment shown in Figure 1, the interior of housing 12 is accessible by doors 32a and 32b. Doors 32a and 32b are on one face of housing 12 and open opposite each other by way of vertical hinges. Doors 32a and 32b may be locked using any of various security means to prevent tampering with the contents of housing U. The security means may be a lock openable with a key, code or a security reader 48. Security reader 48 may be configured to read, for example, any of a barcode, fob, RFID, NFC, WiFi, Bluetooth, or other secure means. The security means can be a separate commercially available lock or can be integrated with fluid metering device 10. Alternatively, access to the interior of housing 12 can be provided by at least any of sliding doors, doors with horizontal hinges, a removable face, or other means. Doors 32a and 32b can be located on different faces of housing 12.
[0052] In some embodiments, such as is illustrated in Figures 1 to 3, door 32a can provide a user with visual or physical access to screen 24a, user input interface 24b and printer 26. In other embodiments, access to screen 24a, user input interface 24b and printer 26 may be on another face of housing 12 or may be accessible by opening door(s) 32.
Housing 12 can also include a window to provide visual access to user interface 24. Such a window can be made of a suitable clear material such as a thermoplastic or polycarbonate.
[0053] Various types of commercially available fluid meters exist and are suitable for use as fluid meter 14. In one particular embodiment, fluid meter 14 is a turbine flow meter.
Other types of flow meters that could be used include, but are not limited to, mechanical flow meters such as piston meters, oval gear meters, helical gear meters, nutating disk meters, variable area meters, Woltmann meters, single jet meters, and multiple jet meters; pressure-based meters such as venturi meters, orifice plates, dall tubes, pilot tubes, and cone meters;
and optical flow meters. Fluid meter 14 provides an output to controller 44 for display on screen 24a and for printing by printer 26. The output can comprise either or both of the volume of fluid delivered and the rate at which fluid is being delivered.
[0054] In some embodiments, computer casing 22 contains controller 44 and houses display screen 24a, user input interface 24b, and printer 26. Computer casing 22 provides access to display screen 24a, user input interface 24b and printer 26 while protecting the contents of computer casing 22 from overheating, freezing, electrical shock, liquid, and accidental contact. This protection is achieved by way of features such as fans, venting.
thermal insulation, electrical insulation, seals to prevent intrusion by liquid, and shock absorbing materials. The fan, venting, and thermal insulation can work in conjunction with temperature sensor 50 within computer casing 22 to ensure the electrical components are maintained within an optimal operating temperature range. The electrical insulation lines computer casing 22 to prevent a short circuit from damaging the contents of computer casing 22 or from injuring a user. Computer casing 22 is sealed to prevent any fluid leaks within housing 12 from damaging the contents of computer casing 22. Shock absorbing materials limit damage to the electrical components if fluid metering device 10 is struck or dropped accidentally. Additional cooling features such as a heatsink or a coolant system can be provided.
[0055] In Figure 1, user interface 24 is depicted as comprising display screen 24a and a plurality of buttons for inputting data, such as a user identifying code.
Alternatively, user interface 24 could include any combination of a display screen, a touch screen, an alphanumeric keyboard, a card reader, a barcode scanner, an RFID or NFC
scanner or any other means for securely identifying a trucker and inputting commands. In one embodiment.
display screen 24a is accompanied by a single button for starting fluid metering device 10, stopping fluid metering device 10 and resetting fluid metering device 10.
Display screen 24a may present a user with information regarding the date, time, fill level of reservoir 42, volume of fluid being delivered, rate at which fluid is being delivered, name of truck driver, temperature, and instructions for how to operate fluid metering device 10.
[0056] In some embodiments, user interface 24 provides a system for delivering suggestions, complaints and other messages to a site operator. A message delivery system could allow a user to conveniently alert a site operator in various situations such as when fluid metering device 10 is damaged, when fluid metering device 10 needs to be relocated or when the fluid level of reservoir 42 is at a critical level. Messages can be in any of various formats such as text, audio and video. Messages can be sent via transmitter 56, either wirelessly or by wired connection.
[0057] Fluid metering device 10 is powered by power source 52. Power source 52 can be an external source, can be self-sufficient or may require periodic replacements. Possible external sources include natural gas, propane or electricity. Self-sufficient options include solar power, wind power, and turbine power from the fluid flowing through the pipes.
Periodically replaced options include batteries and replaceable fuel tanks filled with fuels such as natural gas or propane. In embodiments using natural gas or propane, a generator may be provided and controlled by controller 44. In embodiments where a battery is used, it may be advantageous to locate the battery within computer casing 22 to protect it from overheating, freezing, electrical shock, liquid, and accidental contact.
Alternatively a battery could be contained within a separate protective housing with similar features to computer casing 22. Electronics are attached using ground fault interrupter plugs that monitor the current and trip the circuit if a short is detected.
[0058] In one embodiment, power source 52 comprises one or more solar cell arrays.
The solar cell array(s) are provided in conjunction with a battery to store energy captured by the solar cell array(s). The solar cell array(s) may be located on top of housing 12, attached to fluid outlet 18, attached to hangers 20 or may be provided remotely from fluid metering device 10. The battery stores energy collected by the solar cell array(s) for times when the sun is inaccessible, such as at night. The fluid metering device can be located to take advantage of the maximum sun light and the reflection of light off the contents of reservoir 42. In some embodiments, the solar cell array(s) may be configured to move to receive maximum exposure to the sun as it moves across the sky. Using solar power is beneficial since some remote sites where fluid metering devices 10 are used may not have convenient access to electricity.
[0059] In some embodiments of fluid metering device 10, one or more moisture sensors 54 are provided to detect moisture within housing 12 as could occur, for example, in the case of a leak in one of inlet pipe 16, outlet pipe 18, fluid meter 14 or housing 12. The moisture sensors 54 may be connected to controller 44. Controller 44 can cause an alert to be displayed on display screen 24a, or a sound to be played when a critical level of moisture is detected.
The critical level of moisture can be set to accommodate moisture levels expected to arise from naturally occurring moisture in the air and an acceptable level of condensation within housing 12. In some embodiments, controller 44 can cause valve 16b to shut off automatically to prevent any additional fluid from leaking into housing 12. Detecting a leak within housing 12 and shutting off the flow of fluid can help to protect the electronic components of fluid metering device 10. Additionally, in some embodiments, a light is provided within housing 12 to aid in finding where a leak is coming from and to provide light during repairs or replacing of parts such as a battery.
[0060] In some embodiments, a locating device such as GPS receiver 46 may be provided. The spatial coordinates of each delivery can be stored by controller 44, transmitted to an operator and/or printed on the receipt. GPS receiver 46 ensures that deliveries are made at the correct site and facilitates tracking of fluid deliveries. GPS receiver 46 also facilitates tracking fluid metering device 10 if it is stolen or misplaced.
[0061] Some embodiments of fluid metering device 10 include a pump for when the onboard pump of truck 40 is insufficient. For example, a pump may be provided to move fluid at a higher rate or to a greater height in the case of a tall reservoir. A
fluid pump can be provided within housing 12 or between truck 40 and fluid inlet 16a. The pump may rely on power source 52 or its own separate power source.
[0062] In some embodiments, a plurality of fluid metering devices 10 are connected to a central server. The central server receives, for example, data such as the volume of fluid delivered, who delivered the fluid, time of delivery and delivery location.
The central server stores records of each delivery for the purposes of paying truckers. The central server may also receive alerts when the temperature within a particular fluid metering device 10 is outside of the set range, if a reservoir 42 is overflowing or if the fluid level reaches a critical level in a particular reservoir 42. The central server may keep track of such data automatically or may require manual input and oversight. Using the data received, the central server may be configured to calculate how much each trucker should be paid for their deliveries and may create billing materials to facilitate payment of the truckers. The central server may be configured to track statistics such as how much each trucker has delivered to each site historically, how much fluid each site is receiving and using and other valuable information.
[0063] Figure 4 schematically depicts one embodiment of the relationships between controller 44 and the elements of fluid metering device 10 to which controller 44 is connected. Controller 44 receives information from security reader 48 and user interface 24.
Based on the information from security reader 48 and user interface 24, controller 44 may be configured to begin recording a fluid delivery. Controller 44 receives data from GPS receiver 46, fluid level measuring device 36 and flow meter 14 and sends that data to any or all of display 24a, transmitter 56 and printer 24b. Controller 44 may transfer the raw data or may be configured to analyze the data and provide additional information to any or all of display 24a, transmitter 56 and printer 24b. For example, controller 44 may receive data from fluid level measuring device 36 and may then calculate how much fluid can be delivered to reservoir 42 before reservoir 42 overflows. Controller 44 also receives information from moisture sensor 54. Based on information from moisture sensor 54, controller 44 may instruct valve 16b to shut or open. Controller 44 may also instruct alert light 34 to activate based on the information from moisture sensor 54. Controller 44 receives information from temperature sensor 50. Based on the information from temperature sensor 50, controller 44 instructs heater 28 to vary its output, turn on or turn off. In this embodiment, controller 44 is depicted as a single controller. Alternatively, controller 44 can be replaced with a plurality of controllers to perform the same functions.
100641 In one embodiment, fluid metering device 10 is provided to measure water delivered to a work site. Fluid metering device 10 is delivered by truck in two pieces. The first piece comprises housing 12 and its contents. The second piece comprises hangers 20, outlet pipe 18 and solar cell arrays for powering fluid metering device 10.
The two pieces are reattached before being lifted to hang off reservoir edge 42a. Hangers 20 and outlet pipe 18 are selected or adjusted to the correct length for reservoir 42 such that housing 12 will hang approximately three feet from the ground. To raise fluid metering device 10, the arms of a forklift are positioned under housing 12 and between feet 38. Fluid metering device 10 is lifted such that hangers 20 hook over reservoir edge 42a and housing 12 hangs approximately three feet from the ground. Hangers 20 are locked to reservoir 42 to prevent theft.
100651 Prior to receiving water deliveries, fluid level measuring device 36 determines the fluid level in reservoir 42. The fluid level is sent to controller 44 which determines how much water can be delivered before the fluid level reaches a critical level.
This volume is calculated in relation to how many full trucks can make deliveries as well as a volume in liters, gallons or an equivalent unit.
100661 Still prior to receiving water deliveries, temperature sensor 50 determines the temperature within housing 12. If the temperature is below a threshold of, for example, 3 degrees Celsius, water cannot be delivered and heater 28 must be activated.
Temperature sensor 50 continues to take readings and heater 28 remains on until the temperature is sufficiently above the minimum threshold. The heater is reactivated if the temperature drops too close to the minimum threshold. Water deliveries are automatically cancelled by controller 44 shutting valve 16b when the temperature drops below the minimum threshold.
[0067] To receive a water delivery, the trucker attaches hose 58 from truck 40 to fluid inlet 16a by way of a camlock connection. Fluid inlet valve 16b is closed such that no water can be delivered without being accounted for. The trucker then inserts his/her personal pin by way of user interface 24b. Display screen 24a indicates to the trucker that he/she has successfully logged in and that the trucker should push a start button on user interface 24b to begin a delivery. When the start button is pushed, controller 44 instructs valve 16b to open and fluid meter 14 to begin recording the delivery.
[0068] Display 24a indicates how much room is left in reservoir 42 for additional water deliveries, the temperature within housing 12, how much battery power is available, whether fluid metering device 10 is connected to the central server, the rate at which fluid is being delivered and how much fluid has been delivered in this delivery. Display 24a also instructs the trucker to press the stop button when the delivery is finished. When the delivery is finished, the trucker removes any additional water from fluid metering device using the pump on his/her truck 40. The driver then removes hose 58 from inlet pipe 16 and the last bit of water can drip onto the ground or into a drip tray.
[0069] Printer 26 prints a receipt for the driver that provides information such as the date, place, time, amount of water delivered, rate at which water was delivered and the driver's identification number. That information is stored in controller 44 and sent by transmitter 56 to the central server. A carbon copy of the receipt is also stored within fluid metering device 10. This way, the information is not lost. After the receipt is printed, fluid measuring device 10 enters a sleep mode to conserve energy. During sleep mode, the temperature is still maintained but components such as user interface 24 and fluid meter 14 are not provided with power.
[0070] During deliveries, moisture sensor 54 is configured to determine if there is a leak within housing 12. If there is a leak within housing 12, moisture sensor 54 sends a signal to controller 44. Upon receipt of the signal from moisture sensor 54, controller 44 instructs valve 16b to close thereby avoiding further damage to the internal components of housing 12.
Similarly, if fluid level measuring device 36 determines that the fluid level has reached a critical height, controller 44 will instruct valve 16b to close to avoid overflowing reservoir 42.
[0071] User interface 24 can also provide the trucker with a means to communicate with the site operator. The trucker can provide comments along with his/her delivery to alert the site operator if the fluid metering device 10 is damaged, should be relocated, isn't functioning properly, etc.
[0072] When the trucker is finished the delivery, the trucker takes a copy of the receipt so that he/she can tally his/her deliveries to get paid. The trucker's tally is checked against the records of the site operator to ensure that all payments are accurate. This ensures reliable and accurate payment for water deliveries to the work site.
[0073] The above description provides one or more controllers 44. The one or more controllers 44 may comprise one or more processors, microprocessors, logic circuits, configurable logic circuits, digital signal processors, or the like configured to receive data and/or commands and to control the operation of an above-mentioned element.
The processor or equivalent component may execute software instructions which cause the processors to perform an element of the invention. For example, a processor might receive a temperature measurement from temperature sensor 50 and send instructions to heater 28 to turn on.
Interpretation of Terms [0074] Unless the context clearly requires otherwise, throughout the description and the claims:
= "comprise", "comprising", and the like are to be construed in an inclusive sense, as opposed to an exclusive or exhaustive sense; that is to say, in the sense of -including, but not limited to";
= "or", in reference to a list of two or more items, covers all of the following interpretations of the word: any of the items in the list, all of the items in the list, and any combination of the items in the list; and = the singular forms "a", "an", and "the" also include the meaning of any appropriate plural forms.
[0075] Words that indicate directions such as "vertical", "transverse", "horizontal", "upward", "downward", "forward", -backward", "inward", "outward", "vertical", "transverse", "left", "right", "front", -back", "top", -bottom", "below-, -above", -under-, and the like, used in this description and any accompanying claims (where present), depend on the specific orientation of the apparatus described and illustrated. The subject matter described herein may assume various alternative orientations. Accordingly, these directional terms are not strictly defined and should not be interpreted narrowly.
[0076] Specific examples of systems, methods and apparatus have been described herein for purposes of illustration. These are only examples. The technology provided herein can be applied to systems other than the example systems described above. Many alterations, modifications, additions, omissions, and permutations are possible within the practice of this invention. This invention includes variations on described embodiments that would be apparent to the skilled addressee, including variations obtained by: replacing features, elements and/or acts with equivalent features, elements and/or acts; mixing and matching of features, elements and/or acts from different embodiments; combining features, elements and/or acts from embodiments as described herein with features, elements and/or acts of other technology; and/or omitting combining features, elements and/or acts from described embodiments.
[0077] It is therefore intended that the following appended claims and claims hereafter introduced are interpreted to include all such modifications, permutations, additions, omissions, and sub-combinations as may reasonably be inferred. The scope of the claims should not be limited by the preferred embodiments set forth in the examples, but should be given the broadest interpretation consistent with the description as a whole.
Claims (20)
1. A fluid metering device comprising:
a housing;
an inlet for receiving fluid;
an outlet for delivering fluid extending from the housing;
a flow meter within the housing in fluid connection between the inlet and the outlet;
a controller connected to the flow meter;
an interface connected to the controller for receiving data from the processor and transmitting the data to a user; and at least one hanger attached to and extending from the housing, the at least one hanger comprising a hook configured to engage an edge of a fluid reservoir and hang therefrom.
a housing;
an inlet for receiving fluid;
an outlet for delivering fluid extending from the housing;
a flow meter within the housing in fluid connection between the inlet and the outlet;
a controller connected to the flow meter;
an interface connected to the controller for receiving data from the processor and transmitting the data to a user; and at least one hanger attached to and extending from the housing, the at least one hanger comprising a hook configured to engage an edge of a fluid reservoir and hang therefrom.
2. A fluid metering device as in claim 1 wherein there are two or more hangers and one or more braces connecting the two or more hangers.
3. A fluid metering device according to any one of claims 1-2 wherein a length of each of the hangers is adjustable.
4. A fluid metering device according to any one of claims 1-3 wherein the hangers and the outlet are releasably attached to the housing.
5. A fluid metering device according to any one of claims 1-4 comprising a heater within the housing; and a temperature sensor within the housing;
wherein the heater operates to maintain the temperature inside the housing within a specified range as measured by the temperature sensor.
wherein the heater operates to maintain the temperature inside the housing within a specified range as measured by the temperature sensor.
6. A fluid metering device according to any one of claims 1-5 comprising a fluid level detector for detecting a fluid level and wherein the processor is configured to compare the fluid level to a predetermined critical fluid level and a warning system activated when the fluid reaches the critical fluid level.
7. A fluid metering device according to any one of claims 1-6 wherein the interface comprises a printer.
8. A fluid metering device according to any one of claims 1-7 wherein the housing is thermally insulated.
9. A fluid metering device according to any one of claims 1-8 wherein the outlet extends generally upward from the housing and has a generally downward facing spout for delivering fluid.
10. A fluid metering device according to any one of claims 1-9 further comprising an input interface.
11. A fluid metering device according to claim 10 wherein the input interface comprises a reader for reading one of a swipeable card, an RFID tag and an NFC chip.
12. A fluid metering device according to any one of claims 1-11 comprising a location tracking device.
13. A fluid metering device according to any one of claims 1-12 comprising a moisture sensor within the housing and configured to close the inlet if a critical level of moisture is detected.
14. A fluid metering device according to any one of claims 1-13 comprising a transmitter for sending the data to a remote location.
15. A method of metering fluid comprising:
transporting fluid to a storage site by way of a fluid transport;
connecting fluid transport to a fluid metering device;
delivering fluid through fluid metering device;
measuring volume of fluid delivered through fluid metering device;
transmitting the measurement to a processor;
transmitting the measurement to a user interface; and draining the fluid metering device before disconnecting the fluid transport.
transporting fluid to a storage site by way of a fluid transport;
connecting fluid transport to a fluid metering device;
delivering fluid through fluid metering device;
measuring volume of fluid delivered through fluid metering device;
transmitting the measurement to a processor;
transmitting the measurement to a user interface; and draining the fluid metering device before disconnecting the fluid transport.
16. The method for metering fluid according to claim 15 further comprising measuring a temperature within the fluid measuring device and heating the fluid measuring device if a measured temperature reaches a critical level.
17. The method for metering fluid according to any one of claims 15-16 further comprising monitoring a fluid level to determine if the fluid level reaches a critical level and operating a warning signal if the fluid level reaches the critical level.
18. The method for metering fluid according to any one of claims 15-17 further comprising inputting a user identity by secure means.
19. The method for metering fluid according to any one of claims 15-18 wherein the user interface comprises a printer.
20. A fluid metering device comprising:
a housing having a front face and a top face;
an inlet for receiving fluid extending from the housing;
an outlet for delivering fluid extending from the housing;
a flow meter within the housing in fluid connection with the inlet and the outlet;
a processor connected to the flow meter;
a printer connected to the processor;
an interface attached to the housing for receiving data from the processor and transmitting the data to a user;
at least one hanger, adjustable in length, extending from the top face of the housing, the at least one hanger comprising a first section extending away from a plane defined by the top face, a second section extending from the first section away from a plane defined by the front face and a third section extending from the second section towards the plane defined by the top face;
a temperature sensor;
a heater within the housing that maintains the temperature, as measured by the temperature sensor, within the housing between specified limits;
a fluid level detector for detecting a fluid level; and a warning system activated when the fluid level reaches the critical fluid level.
a housing having a front face and a top face;
an inlet for receiving fluid extending from the housing;
an outlet for delivering fluid extending from the housing;
a flow meter within the housing in fluid connection with the inlet and the outlet;
a processor connected to the flow meter;
a printer connected to the processor;
an interface attached to the housing for receiving data from the processor and transmitting the data to a user;
at least one hanger, adjustable in length, extending from the top face of the housing, the at least one hanger comprising a first section extending away from a plane defined by the top face, a second section extending from the first section away from a plane defined by the front face and a third section extending from the second section towards the plane defined by the top face;
a temperature sensor;
a heater within the housing that maintains the temperature, as measured by the temperature sensor, within the housing between specified limits;
a fluid level detector for detecting a fluid level; and a warning system activated when the fluid level reaches the critical fluid level.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CA2859228A CA2859228A1 (en) | 2014-08-12 | 2014-08-12 | Fluid metering device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CA2859228A CA2859228A1 (en) | 2014-08-12 | 2014-08-12 | Fluid metering device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA2859228A1 true CA2859228A1 (en) | 2016-02-12 |
Family
ID=55299852
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA2859228A Abandoned CA2859228A1 (en) | 2014-08-12 | 2014-08-12 | Fluid metering device |
Country Status (1)
| Country | Link |
|---|---|
| CA (1) | CA2859228A1 (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US10126152B1 (en) | 2017-07-25 | 2018-11-13 | Ecolab Usa Inc. | Fluid flow meter with linearization |
| US20190033114A1 (en) | 2017-07-25 | 2019-01-31 | Ecolab Usa Inc. | Fluid flow meter with normalized output |
| US10935407B2 (en) | 2017-07-25 | 2021-03-02 | Ecolab Usa Inc. | Fluid flow meter with viscosity correction |
-
2014
- 2014-08-12 CA CA2859228A patent/CA2859228A1/en not_active Abandoned
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US10126152B1 (en) | 2017-07-25 | 2018-11-13 | Ecolab Usa Inc. | Fluid flow meter with linearization |
| US20190033114A1 (en) | 2017-07-25 | 2019-01-31 | Ecolab Usa Inc. | Fluid flow meter with normalized output |
| US10260923B2 (en) | 2017-07-25 | 2019-04-16 | Ecolab Usa Inc. | Fluid flow meter with normalized output |
| US10935407B2 (en) | 2017-07-25 | 2021-03-02 | Ecolab Usa Inc. | Fluid flow meter with viscosity correction |
| US11454526B2 (en) | 2017-07-25 | 2022-09-27 | Ecolab Usa Inc. | Fluid flow meter with linerarization |
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