WO2022016264A1 - Procédé et dispositif d'injection de fluide dans un récipient rempli de liquide sous pression - Google Patents

Procédé et dispositif d'injection de fluide dans un récipient rempli de liquide sous pression Download PDF

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Publication number
WO2022016264A1
WO2022016264A1 PCT/CA2021/050999 CA2021050999W WO2022016264A1 WO 2022016264 A1 WO2022016264 A1 WO 2022016264A1 CA 2021050999 W CA2021050999 W CA 2021050999W WO 2022016264 A1 WO2022016264 A1 WO 2022016264A1
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WO
WIPO (PCT)
Prior art keywords
liquid
plunger
hose
drive rod
flange
Prior art date
Application number
PCT/CA2021/050999
Other languages
English (en)
Inventor
Charles Patrick NEILD
Mark NEILD
Original Assignee
Neild Innovations, Inc.
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Neild Innovations, Inc. filed Critical Neild Innovations, Inc.
Publication of WO2022016264A1 publication Critical patent/WO2022016264A1/fr

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B9/00—Piston machines or pumps characterised by the driving or driven means to or from their working members
    • F04B9/02—Piston machines or pumps characterised by the driving or driven means to or from their working members the means being mechanical
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B19/00—Machines or pumps having pertinent characteristics not provided for in, or of interest apart from, groups F04B1/00 - F04B17/00
    • F04B19/04—Pumps for special use
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24D—DOMESTIC- OR SPACE-HEATING SYSTEMS, e.g. CENTRAL HEATING SYSTEMS; DOMESTIC HOT-WATER SUPPLY SYSTEMS; ELEMENTS OR COMPONENTS THEREFOR
    • F24D3/00—Hot-water central heating systems
    • F24D3/10—Feed-line arrangements, e.g. providing for heat-accumulator tanks, expansion tanks ; Hydraulic components of a central heating system
    • F24D3/1083—Filling valves or arrangements for filling
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24H—FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
    • F24H9/00—Details
    • F24H9/0005—Details for water heaters
    • F24H9/0042—Cleaning arrangements

Definitions

  • the present invention relates liquid filled vessels that operate under pressure. More particularly, the invention relates to a method & device for injecting fluid into a liquid filled vessel under pressure.
  • Hydronic (hot water) heating is one of the most common method of heating commercial buildings worldwide and is an alternative to forced air heating systems in detached and semi-detached homes. Approximately more than 90% of commercial buildings as well as 30% of domestic homes use hydronic (hot water) boilers as their primary heating system. The working pressure of hydronic boilers range from 15 psi to 30 psi for most standard boilers and in some cases up to 50 psi. All hydronic heating systems require cleaning and flushing periodically for ongoing maintenance. For example, all boilers need to be serviced, which may include introducing liquid cleaning agents, glycol, and boiler treatments.
  • a conventional method of cleaning and flushing a hydronic boiler is to perform the following steps: turn off power to the boiler, turn off water supply, close off valves to isolate the boiler from the main system (where isolation valves exist), connect hose from the boiler drain to a floor drain, open boiler drain valve and drain off water to relieve boiler pressure and then to drain the boiler enough to pour cleaning agent into the boiler.
  • Once the cleaning agent is in the boiler all of the above steps are done in reverse, but in re pressurizing the system there is one more step that is removing the air that was introduced into the system to replace the water which we drained out. If the air in a hydronic system is not bled off the system will air lock and the water will not circulate. Bleeding all the air out of a hydronic boiler and piping system can be very time consuming. There is no definitive time for completing the above process but normally 2 - 4 hours would be a reasonable expectation.
  • a conventional product dealing with pressurized plumbing systems is a hydronic pump which is designed to pressurize plumbing systems to test for leaks.
  • a hydronic pump for introducing a chemical or liquid into a boiler: 1) it is large and cumbersome and takes some set-up time before use and more important, 2) its design eliminates any possibility of distribution all of the fluid into the system.
  • Boiler treatment is expensive and manufacturer protocol demands that the entire prescribed quantity of a treatment fluid must go into the system to get optimum results.
  • the method and device of the present application may be utilized to inject a fluid or liquid into a liquid filled vessel under pressure.
  • the device of the present application is designed to address this need for example in the plumbing and hydronic heating industry; that is, to provide a method and device for getting a fluid into a vessel that is normally under pressure. All boilers need to be serviced; that includes introducing liquid cleaning agents, glycol, and boiler treatments, and the device of the present application can be utilized for all three.
  • the method and device may be used in other environments and other types of pressurized liquid filled vessels or containers.
  • the method and device may also be used to inject liquid into a vessel or container that is not pressurised.
  • fluid can be introduced into the hydronic system without doing any of the conventional steps mentioned above in the background section.
  • the device of the present application is a hand-held tool that, when combined with a standard cordless drill for torque, pushes or forces fluid treatment directly into a pressurized vessel.
  • the device makes it possible to achieve the entire task of injecting fluid into a pressurized vessel in less than 5 minutes.
  • the device is designed to force liquid into a pressurized vessel such as a hydronic boiler with a standard cordless drill as a power source.
  • the components of the device are made of materials that are rated up to 100 psi pressure.
  • a benefit of the device of the present application is that it is cleaner and safer than the alternative process of draining a heated hydronic system. As well, a benefit of the present device is that it saves time and reduces cost when performing the injection of liquid into a pressurized vessel. Also, a benefit is that the device facilitates a complete job of injecting a liquid (e.g. a chemical) into a pressurized container with no air-lock or introduction of air into the pressurized container in less than 5 minutes.
  • a liquid e.g. a chemical
  • a method in accordance with an example embodiment of the present application, for injecting liquid into a pressurized fluid-filled container using the device of the present application includes: filling the device with boiler treatment agent, closing an end cap, connecting a short hose from the device to a hose bibb on the boiler, opening a valve handle on the hose bibb, fitting a cordless drill onto the device’s connector 154 and turning on the drill.
  • it takes (approximately less than) 20 seconds to force the liquid (e.g. chemical) into the boiler the next steps include: turning off the hose bibb valve and disconnecting the device from the valve.
  • the boiler did not need to be turned off, no water needed to be drained and no air bleeding is required.
  • the example method is quick and takes approximately five minutes to complete.
  • a device comprising: an outer body for containing a liquid; a first end with a connector for attaching a power source; a second end with a connector for attaching a hose; and a drive assembly positioned inside the outer body for actuating movement of the liquid inside the outer body through to the hose at the second end and into a pressurized vessel.
  • the drive assembly comprises a plunger, a drive rod passing through the center of the plunger, and a flange for anchoring a first end of the drive rod. The plunger moves forward or backward depending on the rotational direction of the drive rod.
  • a method for injecting a fluid into a liquid filled vessel under pressure comprising: inserting liquid into an injection device having a drive assembly; attaching one end of an injection device to the vessel with a hose; attaching a second end of the injection device to a power source; and turning the power on to actuate movement of the liquid from the device into the vessel.
  • Figure l is a side exploded view of a device in accordance with one example embodiment of the present disclosure.
  • Figure 2 is a side perspective view of the assembled device shown in Figure 1 in accordance with one example embodiment of the present disclosure
  • Figure 3 is a front perspective view of the device shown in Figure 2 in accordance with one example embodiment of the present disclosure
  • Figure 4 is a side perspective view of a plunger mechanism of the device shown in Figure 2, in accordance with one example embodiment of the present disclosure
  • Figure 5 a side exploded view of a device in accordance with a second example embodiment of the present disclosure
  • Figure 6A is a side exploded view of a device in accordance with another example embodiment of the present disclosure.
  • Figure 6B is a side perspective view of the assembled device shown in Figure 6A in accordance with another example embodiment of the present disclosure.
  • Figure 6C is a front perspective view of the device shown in Figure 6B in accordance with another example embodiment of the present disclosure.
  • Figure 6D is a side perspective view of a plunger mechanism of the device shown in Figure 6B, in accordance with another embodiment of the present disclosure.
  • Figure 7 is a side perspective view of the device in use with a hose and power drill in accordance with an example embodiment of the present application. Detailed description
  • the method and device of the present application are directed to the inserting of a fluid into a liquid filled vessel or system that normally operates under pressure.
  • the method and device of the present application may utilized in various environments and systems including for example hydronic heating, refrigeration, and geothermal systems or any mechanical system which is utilized to store or convey water or other liquids under pressure.
  • These example pressurized systems frequently require chemicals, agents or other fluids and liquids to be introduced for various purposes, including for example cleaning, de-scaling, lubrication, and seasonal weather protection like anti-freeze glycol, etc.
  • the method and device of the present application may be used with other possible applications, environments and pressurized systems.
  • hydronic heating systems approximately 95% of commercial buildings, churches, hospitals, high rise office buildings, apartment buildings, etc., are heated with hydronic heating systems, as well as about 30% of domestic homes.
  • the method and device of the present application may be used to service hydronic systems.
  • Figure 1 illustrates an exploded perspective view 100 of a device 101 according to an embodiment of the present application.
  • the device 101 includes an outer shell section 102 and a drive assembly section 104.
  • Figure 2 illustrates a front perspective view of the device 101 from Figure 1 in its assembled form.
  • the outer shell 102 functions as a watertight container that can withstand the required pressures of operation.
  • the outer shell 102 includes fittings, washers and an O-ring to create a watertight seal and to facilitate withstanding pressure.
  • the outer shell 102 includes built-in flanges and anchoring devices to support the drive assembly 104.
  • the outer shell 102 includes a main body 110 that is tubular with a cylindrical shape and hollow interior.
  • the main body 110 may be made of a plastic or thermoplastic material such as for example PVC or equivalent and may be formed by injection molding.
  • the main body 110 is made of Schedule 60 PVC pipe.
  • the main body 110 is made of a transparent or clear plastic.
  • the main body 110 is sized to accommodate the amount fluid required to be injected into the pressurized vessel or container and to accommodate the drive assembly 104.
  • boiler treatments may be sold in quart size containers (32 oz).
  • the volume of the device 101 would be sufficient to contain 32oz of fluid as well as the drive assembly 104.
  • the inside dimensions of the main body 110 may be 2 1 ⁇ 2” X 14” (64mm x 356mm). The size and shape of the main body 110 will vary depending on the type of pressurized vessel or container and the amount of fluid to be injected.
  • the outer shell 102 includes a first end portion 111 and a second end portion 113. Both end portions 111, 113 of the main body 110 may be reinforced, for example to twice the thickness of the surrounding plastic of the main body 110 to provide additional strength where needed. Each end portion 111, 113 of the main body 110 is designed to perform a specific purpose.
  • the end portion 113 may be considered the ‘front’ or ‘fill’ end where the fluid or liquid is loaded into the main body 110.
  • the end portion 113 has raised protrusions 114 along its exterior surface.
  • the protrusions 114 are raised circles or nubs that are generally equally spaced around part of the end portion’s exterior surface. In other embodiments, different shapes and spacing of the protrusions 114 may be used.
  • the end portion 113 has groove or space for receiving a sealing means 115 (e.g. a method of sealing) such as for example a rubber O-ring.
  • the cap 140 is connected to the cylinder body with threaded joints, with male threads on 114 and female threads on 141.
  • the space 116 receives a flange 150 that is designed to fit flush within the end portion 113 of the main body 110.
  • the flange 150 is a drive rod guide flange and it may be fitted lose enough within the end portion 113 so that it can be removed while filling the device 101 with fluid or liquid.
  • a cap 140 having an opening on its inside end that is designed to fit and slide over the O-ring 115 and the protrusions 114.
  • the interior surface of the cap 140 has grooves (not shown) that are formed to match the shape of the protrusions 114 to receive them.
  • a washer 130 inside the cap 140 which provides light resistance to lock the cap 140 in place.
  • the cap 140 applies pressure to the end portion 113 and by turning the cap 140 in a clockwise direction, the cap 140 is secured and locked into place, with the grooves in the cap 140 engaging the protrusions 114 of the end portion 113.
  • the outside end of the cap 140 has a center circular opening 107 with a male hose thread connection formed on it so that a hose may be connected or attached to the device 101.
  • Alternative connectors may be used instead of the male hose thread connection 142.
  • a short standard hose with two female thread connectors may be used for connecting the device 101 to the pressurized vessel or container that will be injected with fluid.
  • the user pushes the cap 140 over the O-ring 115 and the protrusions 114, turns the cap 140 clockwise and releases.
  • the cap 140 has protrusions 143 that function as hand grips to aid in the securing of the cap 140 on the main body 110.
  • the device 101 may have a permanent hose or other means to connect directly to the pressurized vessel.
  • the outer shell 102 is designed to withstand internal pressure of up to 120 pounds per square inch (PSI) although the most common demand or use of the device 101 is with systems or pressurized containers that operate at pressures ranging up to 30 PSI.
  • PSI pounds per square inch
  • the outer shell 102 is also the support structure for the drive assembly 104, which is a mechanical operating system of the device 101.
  • the end portion 111 may be considered the ‘back’ end of the main body 110 and has an interior space or opening 112 that is shaped and designed to receive a flange 152.
  • the anchor flange 152 fits into the space 112 and is flush with the back end of the main body 110.
  • the flange 152 is permanently fixed-in-place in the space 112 and the flange 152 functions to support and anchor the mechanical drive assembly 104.
  • the flange 152 shown in Figure 1 is circular in shape however in other embodiments the shape and configuration of the flange 152 may be different (see for example Figure 5).
  • the flange 152 is designed with a hole 153 in its center sized to allow a drive rod 190 to rotate freely without binding.
  • the flange 152 made of metal such as steel. If a plastic flange is used, the hole would be designed to be large enough to accommodate a metal sleeve (not shown) through which the drive rod 190 can turn freely.
  • a perforated cap 120 permanently or semi -permanently secured over the end portion 111 of the shell body 110 for extra strength and for cosmetic purposes.
  • the cap 120 may be secured by cementing or gluing or other means to fuse the cap 120 onto the end portion 111.
  • the device 101 further includes a cylindrical grip 125 that may be made of rubber such as a pliable rubber.
  • the grip 125 may be positioned into place by sliding it along the exterior of the main body 110. The position of the grip 125 may be adjusted by a user.
  • the example grip 125 has protrusions 126 along the exterior of the grip 125, where the protrusions 126 function to assist the user in gripping and handling the device 101.
  • Other shapes and configurations of the grip 125 may be used, and it may be permanently attached or affixed to the main body 110.
  • the mechanical drive assembly 104 generally includes the drive rod 190 and a piston 174.
  • the piston 174 may also be referred to as a plunger.
  • the drive rod in the example embodiment is threaded. In other embodiments, the drive rod may not be threaded.
  • the drive rod 190 is powered by an external power source, such as for example a cordless power drill.
  • the drive rod 190 passes through threads inside the piston 174.
  • the drive rod 190 is anchored into place, so when the drive rod spins in a threaded anchor flange 152, the piston 174 will move forward or backward as directed by the drill.
  • the diameter of the piston 174 affects the amount of pressure that the device 101 may withstand.
  • the thread of the drive rod 190 is approximately 3/8” in diameter and the piston is approximately 2 1 ⁇ 2” in diameter.
  • the resistance on the perimeter of the piston 174 easily overcomes the resistance of the thread of the drive rod 190, thus the piston 174 resists the tendency to spin when the drive rod 190 exerts pressure.
  • the drive rod 190 and all threaded fitting are left-hand threaded so when the drill is set to ‘forward’ the piston moves forward and when set to ‘reverse’ the piston withdraws.
  • the drive rod 190 and the threaded fittings may be right-hand threaded.
  • the length of the drive rod 190 runs from a power source connector 154, through the piston 174 and protrudes through the guide flange 150.
  • the guide flange 150 is shown as a circular disk with one or more through holes 151 that allow liquid or fluid to move from inside the device 101 through the hose connection 142 to the pressurized vessel. In other embodiments the guide flange 150 and the through holes may be of a different shape and configuration.
  • the drive rod 190 protrudes approximately 1 ⁇ 2” past the guide flange 150.
  • the drive rod 190 may be held in place with threaded anchor fittings 162.
  • the power source connector 154 may also function to hold the drive rod 190 in place.
  • the threaded fitting 162 and the power source connector 154 may be permanently or semi-permanently set on either side of the anchor flange 152 with a nut 160 and washers 156, 158 adjacent on both sides to prevent the drive rod 190 from binding against the anchor flange 152.
  • the washers 156, 158 may be made of, for example, metal or plastic.
  • Adjacent to the anchor threaded fitting 162 is a tension spring 164, for the purpose of applying resistance to the power source (e.g. handheld power drill) thereby alerting the operator that the piston 174 is fully retracted back and the unit is ready for filling.
  • the front of the drive rod 190 has no threads 192 which causes the piston 174 to disengage from the drive rod 190 threads when it reaches the front of the outer shell 102, preventing impact shock or damage to the device.
  • the drive rod 190 portion with no threads 192 is approximately 1 ⁇ 2” longer than the running length of the piston 174 causing the piston 174 to come free from the drive rod 190 and still seat against the guide flange 150 to ensure that minimal, if any, chemical fluid remains inside.
  • a spring 178 flanked by washers 180,182 provides back pressure to re-seat or re-position the piston 174 onto the drive rod 190 threads when the power source (e.g. handheld power drill) is reversed.
  • the piston 174 functions as a plunger that pushes a fluid or liquid out through the hose connection 142 in the pressure cap 140.
  • the piston 174 may be molded from hard plastic or metal.
  • the size or diameter of the piston 174 is slightly smaller than the inner size or diameter of the main body 110 of the outer shell 102.
  • the piston 174 has a circumferential groove along its outer edge for inserting the pressure seal 176 (e.g. a rubber O-ring).
  • a cavity is molded into the pressure end 177 of the piston 174 so the washers 180, 182 and the spring 178 can compress inside. This configuration facilitates the piston 174 to reach all the way to the guide flange 150 and expel its entire load of fluid or liquid.
  • the pressure front 173 of the piston 174 may have a molded recess, enclave or cavity 410 (shown in Figure 4) which permits the piston 174 to house a washer 172 and the threaded metal insert or plug 170.
  • the cavity may be approximately 1 1 ⁇ 4” deep and 1” in diameter to house a 1 ⁇ 2” deep by 1” diameter rubber washer and a 3 ⁇ 4” deep by 1” diameter threaded plug.
  • the interior of the cavity may have grooves or threading that runs in line with the drive rod 190.
  • the cavity may have 1 ⁇ 4” deep grooves on two sides at 180 degrees which run in line with the drive rod 190 having a 3 ⁇ 4” diameter.
  • a problem with injecting liquid into a pressurized vessel is maintaining a seal in the device 101 that may withstand the pressure of fluid injection to the pressurized vessel.
  • the washer 172 is designed to prevent the fluid or liquid being forced through the threads in the center of the piston when under pressure (e.g. prevent backflow of the liquid) and is positioned in the device so that the seal of the device 101 is maintained to withstand the pressure applied during the process of driving the liquid to the pressurized vessel or system.
  • the washer 172 fits snugly inside the cavity 410 on the plunger and over the threads on the drive rod 190.
  • the threaded insert plug 170 is contiguous to the washer and slides into notches in the piston body.
  • the pressure washer 168 (may also be referred to as a pressure plate) compresses the insert plug 170 onto the rubber washer 172 and held in place by four self tapping screws 166 thus making the threads waterproof under pressure (e.g. prevent backflow of the liquid).
  • a style check valve may be built into the opening 107 of the hose connector 142 for the purpose of eliminating any possibility of back flow into the device from the pressurized system or boiler.
  • an external check valve may be attached to the hose connector 142.
  • the drive assembly 102 further comprises a threaded plug 170.
  • the threaded plug 170 has protrusions 402, 404 or ‘paddles’ on two sides (e.g. example size 1/4”) set at 180 degrees which correspond with the slots in the piston body 174.
  • the protrusions on the plug 170 eliminate the tendency of the threaded plug 170 to turn inside the piston body 174.
  • the pressure side 173 of the piston body 174 is slightly recessed or indented to receive a metal compression flange 168, there the flange 168 fits flush with the end of the piston 174.
  • the compression flange 168 compresses the plug 170 and washer 172 into the body of the piston 174 with four screws 166 in pre-drilled holes to secure it in place.
  • Other mechanisms may be used to secure the compression flange 168 with the compressed plug 170 and washer 172 in the piston body 174.
  • a method of securing the threaded plug 170 is to replace the paddles with slots.
  • flat tabs e.g. metal or plastic
  • This embodiment may reduce manufacturing costs.
  • Figure 5 shows a further example embodiment of the present application.
  • the guide flange 550 and the anchor flange 552 are made of a plastic material and have a different shape and configuration than the previous example embodiment.
  • the guide flange 550 and the anchor flange 552 are disk shaped with three blades; the spaces between the blades allows the fluid or liquid to move from inside the device 101 through the hose connection 142 to the pressurized vessel. If the flanges 550, 552 are made of a plastic material, they will be fitted with a metal sleeve (not shown) through its center to prevent friction wear.
  • the amount of liquid that may be poured into the device 101 is dependent on the size of the device 101.
  • the device may accommodate up to one quart of fluid.
  • the flange 150 is replaced and the pressure cap 140 is pushed over the spacer or O-ring 114.
  • the cap 140 aligns with the slots in the cap with the nubs 114 on the end portion 113.
  • the cap 140 is turned clockwise until it locks in place.
  • a hose (not shown, e.g. 6” hose) is connected at the connector 142 on the pressure cap 140 and a boiler hose bibb.
  • the hose bibb is opened, resulting in the device 101 being pressurized under the same pressure as the boiler.
  • the power source e.g.
  • cordless power drill is set to a ‘forward’ setting.
  • the user holds the device 101 in one hand while powering the drill in the other hand.
  • the left hand threads on the device 101 propel the piston 174 forward forcing the liquid (e.g. chemical, treatment, cleaner) into the boiler system.
  • the piston 174 comes free from the drive rod 190 preventing damage.
  • the fluid has now been transferred into the boiler and no air has been introduced into the boiler.
  • the valve on the boiler outlet hose bibb is closed.
  • the power source e.g. drill
  • the spring 178 will reset the piston 174 onto the drive rod 190.
  • the hose is disconnected at the connector 142.
  • the device 101 is now ready for re-use on another pressurized system.
  • the components of the device 101 previously described may be made of plastic or metal materials, or different combinations thereof. Different configurations and mechanisms may be used for the drive assembly 104. Also, the components in the drive assembly 104 may be positioned in a different order, and the components in the drive assembly 104 may have different shapes and configurations (e.g. the guide flange and the anchor flange may have different shapes and configurations than the example embodiments shown). As well, although the example embodiment described using an external power source, the device 101 may be produced to have an internal or integrated power source that actuates the drive assembly 104.
  • Figure 6A illustrates an exploded perspective view 600 of a device 601 according to another embodiment of the present application.
  • the device 601 includes an outer shell section 602 and a drive assembly section 604.
  • Figure 6B illustrates a front perspective view of the device 601 from Figure 6B in its assembled form.
  • the outer shell 602 functions as a watertight container that can withstand the required pressures of operation.
  • the outer shell 602 includes a main body 610 that is tubular with a cylindrical shape and hollow interior.
  • the main body 610 may be made of a plastic or thermoplastic material such as for example PVC or equivalent and may be formed by injection molding.
  • the main body 610 is made of Schedule 40 PVC pipe.
  • the main body 610 is made of a transparent or clear plastic.
  • the main body 610 is sized to accommodate the amount fluid required to be injected into the pressurized vessel or container and to accommodate the drive assembly 604. The size and shape of the main body 610 will vary depending on the type of pressurized vessel or container and the amount of fluid to be injected.
  • the outer shell 602 includes a first end portion 611 and a second end portion 613.
  • Each end portion 611, 613 of the main body 610 is designed to perform a specific purpose.
  • the end portion 613 may be considered the ‘front’ or ‘fill’ end where the fluid or liquid is loaded into the main body 610.
  • a cap 640 is affixed to the end portion 613 with an adhesive.
  • the cap 640 may be permanently glued onto the end portion 613.
  • the cap 640 may be permanently attached using other or additional securing means (e.g. threaded joints).
  • an interior space that is designed to receive part of the drive assembly 604. In the example shown in Figure 6B, the space receives a flange 650 that is designed to fit flush within the end portion 613 of the main body 610.
  • the outside end of the cap 640 has a center circular opening 607 to receive a hose adapter 698.
  • the hose adapter 698 may be attached to the cap 640 using a threaded connection or other securing means.
  • a standard hose may be connected at a first end to the device 601 at the hose adapter 698, and connected at a second end to the pressurized vessel or container that will be injected with fluid.
  • the hose adapter may have external threads to receive a hose connection.
  • a hose 710 and a power source 720 are connected or attached to the device 601, in accordance with an example embodiment of the present application.
  • a power source 720 e.g. power drill
  • the user inserts the hose into a liquid solution.
  • the power source such as a hand drill
  • the power source set to FORWARD the negative pressure caused by the piston moving in reverse draws the liquid into the device.
  • the power source set to FORWARD the fluid is pushed out of the device through the hose into a pressurized vessel (e.g: a boiler).
  • the hose is approximately one foot in length. This size of hose limits the amount of liquid in the hose.
  • the outer shell 602 is designed to withstand internal pressure of up to 150 pounds per square inch (PSI) although the most common demand or use of the device 601 is with systems or pressurized containers that operate at pressures ranging up to 32 PSI.
  • the outer shell 602 is also the support structure for the drive assembly 604, which is a mechanical operating system of the device 601.
  • the end portion 611 may be considered the ‘back’ or ‘rear’ end of the main body 610 and has slots 625 that is shaped and designed to receive an anchor 652. As shown in Figures 6A and 6B, the anchor 652 slides through the slots 625 and the main body 610.
  • the anchor 652 functions to support and anchor the mechanical drive assembly 604.
  • the anchor 652 shown in Figure 6A is rectangular in shape however in other embodiments the shape and configuration of the anchor 652 may be different.
  • the anchor 652 may be a slotted steel brace.
  • the anchor 652 is designed with an opening to allow a drive rod 690 to rotate freely without binding.
  • the anchor 652 is secured on one side with a thrust washer 657 and on the other side with a thrust bearing 659 and one or more nuts 662. Additional washers 656 and 658 (e.g. needle washers) may also be used for support.
  • the drive assembly 604 is secured at the rear end with a locking nut 651. After the drive assembly 604 is fixed in place in the outer shell 602 a cap 620 is secured over the end portion 611 of the shell body 110 for extra strength and for cosmetic purposes.
  • the cap 620 may be removable for example for maintenance purposes.
  • the mechanical drive assembly 604 generally includes the drive rod 690 and a plunger 674.
  • the plunger 674 may also be referred to as a piston.
  • the length of the drive rod 690 runs from a power source connector 654, through the piston 674 and protrudes through the guide flange 650.
  • the guide flange 650 is shown as a circular disk with one or more through holes that allow liquid or fluid to move from inside the device 601 through the hose connection 698 to the pressurized vessel. In other embodiments the guide flange 650 and the through holes may be of a different shape and configuration.
  • the power source connector has a six-sided hex end for a drill to attach and a 3/8 reverse interior thread on the side opposite the hex end.
  • hose connection 698 is a threaded connector.
  • the plunger 674 pushes a fluid or liquid out through the hose adapter 698 in the cap 640.
  • the plunger 674 may be molded from plastic or other materials.
  • the size or diameter of the plunger 674 is slightly smaller than the inner size or diameter of the main body 610 of the outer shell 602.
  • the plunger 674 has one or more circumferential grooves along its outer edge for inserting one or more pressure seals 676.
  • the pressure seals 676 are two rubber O-rings spaced apart on the plunger 674.
  • the front assembly includes a washer 680 that is held against the front side of the plunger 674 with a spring 678 to prevent it from leaking when the plunger 674 comes off the thread of the drive rod 690 while the plunger 674 is spinning.
  • the embodiment of Figures 6A to 6C does not have a cavity in front of the plunger 674.
  • the plunger 674 has flat surface that acts as a seat for the washer 680 to be pushed up against (with the help of the pictured spring 678) to prevent the device from leaking when the inner washer 672 comes off of the threaded portion of the drive rod 690 and is able to freely spin on the smooth portion of the drive rod.
  • the washer 680 is rubber.
  • the pressure front 673 of the plunger 674 may have a molded recess, enclave or cavity 679 (shown in Figure 6D) which permits the plunger 674 to receive a washer 672 (e.g. rubber gasket) and an insert or plug 670.
  • the washer 672 is a hex shaped nut.
  • the hex nut 672 is one inch in diameter. The hex shape of the washer 672 may provide simplicity of manufacturing of the device.
  • the washer 672 is designed to prevent the fluid or liquid being forced through the threads in the center of the plunger when under pressure and is positioned in the device so that the seal of the device 601 is maintained to withstand the pressure applied during the process of driving the liquid to the pressurized vessel or system.
  • the washer 672 fits snugly inside the cavity 679 on the plunger and over the threads on the drive rod 690.
  • the threaded insert plug 670 is contiguous to the washer and slides into the piston body.
  • a pressure plate 668 compresses the insert plug 670 onto the rubber washer 672 and is held in place by four screws 666 thus making the threads waterproof under pressure.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Pressure Vessels And Lids Thereof (AREA)

Abstract

Le procédé et le dispositif de la présente demande concernent l'insertion d'un fluide dans un récipient ou un système rempli de liquide qui fonctionne normalement sous pression. Le procédé et le dispositif de la présente demande peuvent être utilisés dans divers environnements et systèmes comprenant, par exemple, des systèmes de chauffage électrotechnique, des systèmes de réfrigération et des systèmes géothermiques. Le dispositif comprend un corps externe pour contenir un liquide ; une première extrémité dotée d'un raccord permettant de fixer une source d'alimentation ; une seconde extrémité dotée d'un raccord permettant de fixer un tuyau ; et un ensemble d'entraînement positionné dans le corps externe pour actionner le mouvement du liquide à l'intérieur du corps externe à travers le tuyau au niveau de la seconde extrémité et dans un récipient sous pression.
PCT/CA2021/050999 2020-07-21 2021-07-20 Procédé et dispositif d'injection de fluide dans un récipient rempli de liquide sous pression WO2022016264A1 (fr)

Applications Claiming Priority (2)

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US202063054368P 2020-07-21 2020-07-21
US63/054,368 2020-07-21

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WO2022016264A1 true WO2022016264A1 (fr) 2022-01-27

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Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4261481A (en) * 1978-08-08 1981-04-14 General Dynamics Fluid packaging kit for pressurized dispensing
WO2010118764A1 (fr) * 2009-04-13 2010-10-21 Karan Dadgar Appareil de pompage de liquide
CA2858625A1 (fr) * 2011-12-21 2013-06-27 Sika Technology Ag Dispositif d'entrainement d'un dispositif de dosage et de melange de substances a plusieurs composants
WO2015112027A1 (fr) * 2014-01-27 2015-07-30 Te Pari Products Limited Distributeur de liquide

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4261481A (en) * 1978-08-08 1981-04-14 General Dynamics Fluid packaging kit for pressurized dispensing
WO2010118764A1 (fr) * 2009-04-13 2010-10-21 Karan Dadgar Appareil de pompage de liquide
CA2858625A1 (fr) * 2011-12-21 2013-06-27 Sika Technology Ag Dispositif d'entrainement d'un dispositif de dosage et de melange de substances a plusieurs composants
WO2015112027A1 (fr) * 2014-01-27 2015-07-30 Te Pari Products Limited Distributeur de liquide

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