Placement of Fluids in Ground by Pulse-Injection
First Claim
1. A pulse-generator apparatus, for injecting a flow of fluid, having pulses superimposed on the flow, into an in-ground pipe, wherein:
- the apparatus is suitable, as a structure, to be mounted at ground surface level, and to perform the task of injecting the fluid down into an in-ground pipe;
the apparatus includes a housing, in which is mounted an electric motor, having a rotating drive-shaft;
the apparatus includes a rotor, which is drive-coupled to the drive-shaft, and which is provided with a rotor-aperture;
the apparatus includes a stator, which is provided with a stator-aperture;
the housing defines an upstream-chamber, which has an inlet-port for receiving fluid from a supply reservoir;
the housing defines a downstream-chamber, which has an outlet-port for conveying fluid to an in-ground pipe;
the housing includes a pulse-conduit, containing an openable and closable pulse-port;
the pulse-conduit is structured for conveying fluid, when open, from the upstream-chamber to the downstream-chamber;
the rotor is provided with a rotor-aperture, and the stator is provided with a stator-aperture;
the rotor-aperture and the stator-aperture are so arranged that, as the rotor rotates, the rotor-aperture cyclically covers and uncovers the stator-aperture;
the pulse-port of the pulse-conduit is fully open when the rotor-aperture fully overlies the stator-aperture, is partially open when a portion of the rotor-aperture overlies a portion of the stator-aperture, and is closed when no portion of the rotor-aperture overlies any portion of the stator-aperture;
whereby, insofar as the upstream-chamber at a higher pressure than the downstream-chamber, and insofar as the motor rotates, a pulse comprising a pressurised pulse-volume of liquid passes from the upstream-chamber to the downstream-chamber, through the pulse-conduit, when the pulse-port is open.
2 Assignments
0 Petitions
Accused Products
Abstract
For use when injecting remediation liquid via an injection-well into contaminated groundwater, in the ground. The injection equipment includes a pulse-generator, which has an upstream chamber and a downstream chamber, linked by a pulse-conduit and a bypass conduit. The pulse-conduit includes a pulse-port, which opens and closes cyclically. The pulse-port is formed by the interaction of two apertures, one in the motorised rotor, the other in the stator. The rotor and stator may be formed as two facing plates held slightly apart, or as two cylinders one inside the other. The pulse-generator is located at the ground surface and can be adjusted as to pulse frequency, pulse amplitude, pulse rise-time, and as the the differential pressure between the upstream-chamber and the downstream chamber.
27 Citations
17 Claims
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1. A pulse-generator apparatus, for injecting a flow of fluid, having pulses superimposed on the flow, into an in-ground pipe, wherein:
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the apparatus is suitable, as a structure, to be mounted at ground surface level, and to perform the task of injecting the fluid down into an in-ground pipe; the apparatus includes a housing, in which is mounted an electric motor, having a rotating drive-shaft; the apparatus includes a rotor, which is drive-coupled to the drive-shaft, and which is provided with a rotor-aperture; the apparatus includes a stator, which is provided with a stator-aperture; the housing defines an upstream-chamber, which has an inlet-port for receiving fluid from a supply reservoir; the housing defines a downstream-chamber, which has an outlet-port for conveying fluid to an in-ground pipe; the housing includes a pulse-conduit, containing an openable and closable pulse-port; the pulse-conduit is structured for conveying fluid, when open, from the upstream-chamber to the downstream-chamber; the rotor is provided with a rotor-aperture, and the stator is provided with a stator-aperture; the rotor-aperture and the stator-aperture are so arranged that, as the rotor rotates, the rotor-aperture cyclically covers and uncovers the stator-aperture; the pulse-port of the pulse-conduit is fully open when the rotor-aperture fully overlies the stator-aperture, is partially open when a portion of the rotor-aperture overlies a portion of the stator-aperture, and is closed when no portion of the rotor-aperture overlies any portion of the stator-aperture; whereby, insofar as the upstream-chamber at a higher pressure than the downstream-chamber, and insofar as the motor rotates, a pulse comprising a pressurised pulse-volume of liquid passes from the upstream-chamber to the downstream-chamber, through the pulse-conduit, when the pulse-port is open. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17)
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Specification