A sleeve for use in rotating equipment has a sleeve body having an inner surface, an outer surface, a first end and a second end. At least one groove is formed in and extends axially along the inner surface of the sleeve body, the groove being open at the first end and closed at the second end of the sleeve body.
There is provided a hypersonic air-breathing engine having an air passage with an inlet, an outlet, and an air flow, and a turbojet between the inlet and the outlet. There is an air bypass around the turbojet, an afterburner downstream of the turbojet and air bypass, and valves selectively restrict air flow through the turbojet and air bypass. The turbojet valve and air bypass valve are controlled to define a first mode where air flow through the air bypass is restricted and air flow through the turbojet is unrestricted, a second mode where air flow through the air bypass is increased relative to the first mode and the air flow through turbojet is reduced relative to the first mode, and a third mode where air flow through the air bypass is increased relative to the second mode and air flow through the turbojet is reduced relative to the second mode. Nanoparticles may be used to enhance the rate of heat transfer of the pre-cooler and contribute to heat release through combustion.
F02K 7/00 - Plants in which the working-fluid is used in a jet only, i.e. the plants not having a turbine or other engine driving a compressor or a ducted fanControl thereof
F02C 7/143 - Cooling of plants of fluids in the plant of working fluid before or between the compressor stages
An air breathing jet engine for a supersonic or hypersonic vehicle has an air passage having an air inlet, an air outlet, and a combustion chamber between the air inlet and the air outlet; one or more nozzles positioned in the air passage upstream of the combustion chamber; and a source of nanoparticles connected to the one or more nozzles to inject nanoparticles into the air passage.
F02K 7/00 - Plants in which the working-fluid is used in a jet only, i.e. the plants not having a turbine or other engine driving a compressor or a ducted fanControl thereof
F02K 1/46 - Nozzles having means for adding air to the jet or for augmenting the mixing region between the jet and the ambient air, e.g. for silencing
F15D 1/08 - Influencing the flow of fluids of jets leaving an orifice
There is provided a hypersonic air-breathing engine having an air passage with an inlet, an outlet, and an air flow, and a turbojet between the inlet and the outlet. There is an air bypass around the turbojet, an afterburner downstream of the turbojet and air bypass, and valves selectively restrict air flow through the turbojet and air bypass. The turbojet valve and air bypass valve are controlled to define a first mode where air flow through the air bypass is restricted and air flow through the turbojet is unrestricted, a second mode where air flow through the air bypass is increased relative to the first mode and the air flow through turbojet is reduced relative to the first mode, and a third mode where air flow through the air bypass is increased relative to the second mode and air flow through the turbojet is reduced relative to the second mode. Nanoparticles may be used to enhance the rate of heat transfer of the pre-cooler and contribute to heat release through combustion.
F02K 7/00 - Plants in which the working-fluid is used in a jet only, i.e. the plants not having a turbine or other engine driving a compressor or a ducted fanControl thereof
F02C 7/143 - Cooling of plants of fluids in the plant of working fluid before or between the compressor stages
An air breathing jet engine for a supersonic or hypersonic vehicle has an air passage having an air inlet, an air outlet, and a combustion chamber between the air inlet and the air outlet; one or more nozzles positioned in the air passage upstream of the combustion chamber; and a source of nanoparticles connected to the one or more nozzles to inject nanoparticles into the air passage.
F02K 7/00 - Plants in which the working-fluid is used in a jet only, i.e. the plants not having a turbine or other engine driving a compressor or a ducted fanControl thereof
F02K 1/46 - Nozzles having means for adding air to the jet or for augmenting the mixing region between the jet and the ambient air, e.g. for silencing
F15D 1/08 - Influencing the flow of fluids of jets leaving an orifice
A method of reducing leakage from a pipeline includes the steps of: pumping fluid through a pipeline using at least one pump, the at least one pump comprising a reversible, positive displacement fluid pump; detecting a leak in the pipeline downstream of the pump; reversing the at least one pump to draw fluid out of a downstream section of the pipeline; and redirecting the fluid being drawn from the pipeline into a storage container.
F17D 5/02 - Preventing, monitoring, or locating loss
F04B 23/02 - Pumping installations or systems having reservoirs
F17D 1/14 - Conveying liquids or viscous products by pumping
E21B 43/01 - Methods or apparatus for obtaining oil, gas, water, soluble or meltable materials or a slurry of minerals from wells specially adapted for obtaining from underwater installations
F17D 3/00 - Arrangements for supervising or controlling working operations
A method of reducing leakage from a pipeline includes the steps of: pumping fluid through a pipeline using at least one pump, the at least one pump comprising a reversible, positive displacement fluid pump; detecting a leak in the pipeline downstream of the pump; reversing the at least one pump to draw fluid out of a downstream section of the pipeline; and redirecting the fluid being drawn from the pipeline into a storage container.
F17D 5/02 - Preventing, monitoring, or locating loss
E21B 43/01 - Methods or apparatus for obtaining oil, gas, water, soluble or meltable materials or a slurry of minerals from wells specially adapted for obtaining from underwater installations
F04B 23/02 - Pumping installations or systems having reservoirs
F17D 1/14 - Conveying liquids or viscous products by pumping
A method of running a down hole rotary pump using a top drive, sucker rod or any drive shaft from surface. A first step involves providing a gear box having an input end and an output end. The gear box is being capable of receiving an input of a first speed at the input end and producing an output of a second speed which is one of either faster or slower than of the first speed at the output end. A second step involves positioning the gear box down hole with the input end coupled to a remote lower end of a sucker rod and the output end coupled to a rotary activated pump. A third step involves applying a driving force to the sucker rod to rotate the sucker rod at the first speed, with the rotational force being transmitted to the rotary activated pump through the gear box which rotates the rotary activated pump at the second speed.
A wellhead top drive is provided that includes a driving gear, a driven gear, and a movable member. The movable member has a first intermediate gear toward a first end and a second intermediate gear toward a second end. The movable member is movable between a first position and a second position, such that in the first position, the driving gear drives the driven gear via the first intermediate gear, and in the second position, the driving gear drives the driven gear via the second intermediate gear.
E21B 43/12 - Methods or apparatus for controlling the flow of the obtained fluid to or in wells
F04B 47/00 - Pumps or pumping installations specially adapted for raising fluids from great depths, e.g. well pumps
F04B 53/00 - Component parts, details or accessories not provided for in, or of interest apart from, groups or
F16H 3/093 - Toothed gearings for conveying rotary motion with variable gear ratio or for reversing rotary motion without gears having orbital motion exclusively or essentially with continuously- meshing gears, that can be disengaged from their shafts characterised by the disposition of the gears with two or more countershafts
A method of running a down hole rotary pump using a top drive, sucker rod or any drive shaft from surface. A first step involves providing a gear box having an input end and an output end. The gear box is being capable of receiving an input of a first speed at the input end and producing an output of a second speed which is one of either faster or slower than of the first speed at the output end. A second step involves positioning the gear box down hole with the input end coupled to a remote lower end of a sucker rod and the output end coupled to a rotary activated pump. A third step involves applying a driving force to the sucker rod to rotate the sucker rod at the first speed, with the rotational force being transmitted to the rotary activated pump through the gear box which rotates the rotary activated pump at the second speed.
F04B 53/00 - Component parts, details or accessories not provided for in, or of interest apart from, groups or
F16H 57/025 - Support of gearboxes, e.g. torque arms, or attachment to other devices
E21B 17/03 - CouplingsJoints between drilling rod or pipe and drill motor, e.g. between drilling rod and hammer
E21B 43/00 - Methods or apparatus for obtaining oil, gas, water, soluble or meltable materials or a slurry of minerals from wells
F04B 47/02 - Pumps or pumping installations specially adapted for raising fluids from great depths, e.g. well pumps the driving mechanisms being situated at ground level
F16H 57/04 - Features relating to lubrication or cooling
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