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公开(公告)号：US12228356B2
公开(公告)日：2025-02-18
申请号：US17220283
申请日：2021-04-01
Applicant: Tubemaster, Inc.
Inventor： Clifford L Johns , Dennis Patrick McAndrews , Stephen W Brewer
Abstract: A grit blasting arrangement for cleaning chemical reactor tubes includes means for ensuring the grit blast nozzle is coaxial with the longitudinal axis of the tube to be cleaned. The grit blasting device for cleaning tubes spaced apart by upper and lower tubesheets. The grit blasting device includes a grit blast nozzle mounted on a positioning frame and projecting outwardly with an outlet directed into a tube opening during a cleaning operation. The device includes a plurality of stop pins mounted on the positioning frame designed to abut a tubesheet and to define an imaginary plane coplanar with the tubesheet. The plurality of stop pins when abutting the tubesheet prevent the outlet of the nozzle from extending into the tube causing a venturi effect.
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2.发明公开公开(公告)号：US20240335921A1
公开(公告)日：2024-10-10
申请号：US18686872
申请日：2023-04-27
Applicant: JIANGSU UNIVERSITY
Inventor： Lan CHEN , Xinzhou ZHANG , Zhiwei YANG , Linkai LU , Guanxi YU , Xudong REN
Abstract: A sphere precision machining device and a machining method comprise a cavity, an abrasive grain stream, and a circulation device. The cavity holds the workpiece, and comprises two hollow hemispheres, each of said two hemispheres being provided with a main flow channel. Said main flow channel is connected to the cavity. One end of the main flow path of each of the two said hemispheres is connected to a circulating means by which a stream of abrasive grains is made to grind the workpiece. A plurality of main flow channels are disposed homogeneously inside the hemisphere, each of said main flow channels being provided with a plurality of branch flow channels connected to the cavity, said branch flow channels tapering in the flow direction. The present disclosure uses the difference in abrasive grain flow pressure on the surface of the workpiece to achieve precision machining.
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公开(公告)号：US12011805B2
公开(公告)日：2024-06-18
申请号：US16464597
申请日：2017-11-24
Applicant: CANDU ENERGY INC.
Inventor： Paul Wilson , Peter Visser , Brent Spivak
IPC: B24C3/32 , B08B9/023 , B08B9/032 , B24C1/00 , B24C7/00 , F28G1/16 , F28G9/00 , F28G15/00 , F28G15/04
CPC classification number: B24C3/325 , B08B9/023 , B08B9/032 , B24C1/00 , B24C7/00 , F28G1/16 , F28G1/163 , F28G9/00 , F28G15/003 , F28G15/04
Abstract: Methods and systems for cleaning inner surfaces of tubes in a heat exchanger. Some systems include a cleaning device having a nozzle configured to inject cleaning fluid into first and second tubes to perform different first and second cleaning cycles on the tubes, respectively, a controller configured to determine delivery parameters for the cleaning cycles based on a characteristic of each tube, and to control the cleaning device to perform the cleaning cycles based on the delivery parameters. Some methods include determining, with a controller, a tube in the heat exchanger engaged with a nozzle of a cleaning device for injecting a cleaning fluid into the tube during a cleaning cycle, a characteristic of the tube, and a delivery parameter of the cleaning cycle for the tube based on the characteristic of the tube; and performing the cleaning cycle for the tube based on the delivery parameter.
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公开(公告)号：US11951593B2
公开(公告)日：2024-04-09
申请号：US17276712
申请日：2019-09-18
Applicant: SAIPEM S.P.A.
Inventor： Francesco Simone , Maurizio De Santo , Paolo Murgo
Abstract: A system for grit blasting an annular junction portion of a pipeline extending along a longitudinal axis on board a laying vessel, comprises at least one carriage configured to advance along an annular path about the pipeline; at least one centrifugal turbine, which is configured to project grit towards the pipeline, rotates about a rotation axis lying on a plane orthogonal to the longitudinal axis and is supported by the carriage; at least one feed device configured to feed the grit to the centrifugal turbine and comprising a hopper which extends along a respective axis, defines a feed chamber and is coupled to the respective carriage and a guide device configured to act in conjunction with the hopper to feed the grit to the centrifugal turbine at all the operating positions of the carriage.
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公开(公告)号：US11934215B2
公开(公告)日：2024-03-19
申请号：US16776770
申请日：2020-01-30
Applicant: StoneAge, Inc.
Inventor： Terry D. Gromes, Sr. , Terry D. Gromes, Jr. , Kristen E. Griffin , Jon M. Shockey, Jr. , Gordon W. East , William C. Jackson
IPC: G05B19/4099 , B24C3/32 , B24C7/00 , F28G1/16 , F28G15/00 , F28G15/02 , F28G15/08 , G05B15/02 , G05D7/06 , G06F3/04886 , F28D7/16
CPC classification number: G05D7/0617 , B24C3/327 , B24C7/0015 , F28G1/163 , F28G15/003 , F28G15/02 , F28G15/08 , G05B15/02 , G06F3/04886 , F28D7/16
Abstract: A system and method for cleaning of heat exchanger tubes including an assembly, an indexer, and a communication device provided with specialized software and programming. The indexer includes orthogonally arranged first and second arms. A trolley and sensors are provided on the indexer arms. One or more lances are provided on the trolley to deliver water jets into the openings. Sensors measure displacement as the trolley is moved relative to the heat exchanger's face plate. An operator controls the system from a distance away using the communication device. During setup, the pattern of the face plate is learned and mapped utilizing information from the sensors as one of the inputs. This information is utilized to help navigate the face plate during a subsequent cleaning operation. A kit for retrofitting existing X-Y indexers is also disclosed.
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Patent Agency Ranking
公开(公告)号：US11878392B2
公开(公告)日：2024-01-23
申请号：US15734222
申请日：2019-05-21
Applicant: BASF SE
Inventor： Mathias Weickert
IPC: B24C3/32
CPC classification number: B24C3/327
Abstract: The invention relates to a method for the hydro-erosive processing of components, in which hydro-erosive grinding a liquid containing grinding particles flows over surfaces of the component (1), in a device having a channel (3), through which the liquid containing grinding particles flows under pressure and in which the component (1) to be ground is held and in which a valve (5) is positioned upstream of the component (1) in the flow direction, by means of which valve the flow of the liquid can be adjusted.
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公开(公告)号：US11654531B2
公开(公告)日：2023-05-23
申请号：US16344151
申请日：2017-10-19
Applicant: SANDVIK SPECIAL METALS LLC
Inventor： Lynn Couch , Kay Bowles
CPC classification number: B24C3/327 , B24C3/16 , B24C3/32 , B24B31/116 , B24C1/10 , B24C5/04 , B24C7/0061
Abstract: System for reduction of dimensional end-taper in abrasive blasted tubes has a pressurized chamber maintaining higher air pressure inside the chamber than atmospheric pressure, an air-exit port allowing gases to exit the chamber at a controlled rate, a valve restricting passage of gases from the air-exit port, a pressurized membrane through which the tube passes creating a seal, a gauge port where pressure inside the pressurized chamber is monitored and a media-exit port allowing evacuation of abrasive blast media particles after being expelled from the exit-end of the tube. The system addresses dimensional end-taper as high back pressure at the exit end of the tube reduces velocity of the gases and abrasive particles carried in it, thereby reducing erosion of the inner walls of the tube near its exit end. The system can be employed with a wide range of tube sizes and in combination with several abrasive blasting techniques.
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公开(公告)号：US11565373B2
公开(公告)日：2023-01-31
申请号：US15891582
申请日：2018-02-08
Applicant: Vapormatt Ltd
Inventor： Terence Ives Ashworth
IPC: B24C3/08 , B24C5/04 , B24C3/04 , B24C3/12 , B24C5/02 , B24C3/32 , B21C43/04 , B24C3/02 , B24C7/00 , B24C1/08
Abstract: A wet blast machine for cleaning or preparing surfaces comprises: a treatment source for providing a pressurised mixture of treatment material; a nozzle, the nozzle comprising: an inlet for receiving the pressurised mixture of treatment material; an outlet for ejecting the pressurised mixture; and at least one hole in a wall of the nozzle, the hole for feeding one or more products into the nozzle such that one or more surfaces of the product are exposed to the treatment material whilst within the nozzle, allowing for a more efficient wet blast of the products.
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公开(公告)号：US11498185B2
公开(公告)日：2022-11-15
申请号：US17331679
申请日：2021-05-27
Applicant: Craig Payeur
Inventor： Craig Payeur
Abstract: A maintenance device for remotely maintaining the inside of a structure, for example, by deploying a maintenance tool to remotely clean, sandblast using various blast media, and/or paint an interior surface of a building structure.
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公开(公告)号：US11478896B2
公开(公告)日：2022-10-25
申请号：US16467316
申请日：2017-11-08
Applicant: UNIVERSIDAD NACIONAL AUTÓNOMA DE MÉXICO
Inventor： Erika Sohn López-Forment , Elfego Guillermo Ruiz Schneider , Luis Salas Casales , Esteban Antolin Luna Aguilar
Abstract: A hydrodynamically optimized mixer module, to be coupled to a deterministic hydrodynamic tool that allows pulsed polishing of optical surfaces is described. This module allows the supply of abrasive foam or fluid that enters the tool to be interrupted without impairing the operational stability of the polishing process and of said hydrodynamic tool. The mixer module includes at least one interrupter element for switching high-velocity fluids; a first inlet through which air is injected under pressure and in a controlled manner; a second inlet through which a polishing fluid is injected in a controlled manner, said polishing fluid filling a predetermined volume with a hydrodynamically optimized shape and being transferred to a mixing zone where, together with the pressure-injected air, an abrasive foam is produced that is injected into at least one rotational acceleration chamber of the hydrodynamic tool to which the mixer module is coupled.
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