A method of prepping a cylindrical inner surface of a bore using a high-frequency forced pulsed waterjet apparatus entails generating a pressurized waterjet using a high-pressure water pump, generating a high-frequency signal using a high-frequency signal generator, applying the high-frequency signal to a transducer having a microtip to cause the microtip to vibrate to thereby generate the high-frequency forced pulsed waterjet, and rotating the rotatable ultrasonic nozzle inside the bore to prep the inner cylindrical surface of the bore using the high-frequency forced pulsed waterjets exiting from the angled exit orifices of the rotatable ultrasonic nozzle.

A water-abrasive cutting system includes a cutting head (2) which includes a fixing device (16, 18, 20) for fixing the cutting head (2) on the wall to be cut as well as a nozzle head (10) disposed on the cutting head (2). At least one cutting nozzle (12), for an application of a cutting jet (14), is disposed in the cutting head (2). A cutting monitoring device (26) includes at least one hydrophone (30) and at least one further sensor. The cutting monitoring device (26) is configured to detect a complete penetration and/or cutting-through of the wall on the basis of the sensor signals of the hydrophone (30) and the at least one further sensor.

An apparatus for treating an interior surface of a workpiece comprising at least three nozzles ejecting treating material, with a first one and a second one ejecting the treating material substantially along first and second collinear lines. A third one of the nozzles ejects the treating material substantially along a third line substantially perpendicular to the first and second lines. The treating material ejected from the first one intersects with the treating material ejected from the second one at a first intersection area to radially deflect to form a first radial spray. The treating material ejected from the third one intersects with the first radial spray at a second intersection area to form a second radial spray of treating material. The interior surface of the workpiece adjacent the second intersection area is treated with the treating material of the second radial spray.

The object of the invention is to provide a device which can, with high efficiency, polish and clean the inner surface of a pipe, dry the wet inner surface of the pipe, and perform coating, wherein the device does not require a large pump or a large motive force, and does not require a blast hose or a suction hose. More specifically, provided is an intra-pipe turbine blast system that moves along the inside of a pipe and performs work by spraying a fluid toward the inside of the pipe, wherein: a gas injected from a fluid supply device to the upstream-side end inside the pipe imparts speed to a mixed phase fluid consisting of a liquid and solid particles which are likewise injected into the pipe; the flow speed of the mixed phase fluid is set to 3 m per second which is the critical speed at which solid particles can float without precipitating in the liquid, and as a result of such setting, there is a great effect on reducing the energy required for causing the mixed phase fluid to move; and the mixed phase fluid with such setting is injected at a high speed from a rotation nozzle of a turbine crawler which moves inside the pipe, thereby polishing the inner surface of the pipe, and following the polishing work, the turbine crawler can clean, dry and coat the inner surface of the pipe.

A shot treatment apparatus ejects shot material from a nozzle towards a workpiece, and has the nozzle; a nozzle moving mechanism; and a three-dimensional information obtaining sensor; a pattern storage portion storing a nozzle reference operation pattern when the workpiece is installed at a reference position and a reference pose within the treatment compartment; a model data storage portion storing workpiece three-dimensional model data; a position/pose displacement calculating portion comparing the position and pose information and reference position and pose data when the three-dimensional model data is at the reference position in the reference pose to calculate a displacement in a position and pose of the workpiece from the reference position and pose data; and a nozzle movement control portion correcting the pattern based on the displacement in the position and pose, and controlling the nozzle moving mechanism to move the nozzle based on the corrected pattern.

The invention relates to a blasting probe for introducing a granular blasting material into a cavity, in particular into a narrow coked cavity such as an inlet channel of a valve of an internal combustion engine, in particular for cleaning said cavity, comprising a blasting pipe (connectable, at a rear end thereof, to a blasting material feeding line, and a blasting nozzle at the front end of the blasting pipe, said blasting nozzle having at least one outlet opening for the blasting material which is radial with respect to the longitudinal axis of the blasting pipe and which is associated with a deflector surface arranged obliquely with respect to the longitudinal axis of the blasting pipe.

A process and system for automated online fouling prevention of vertical shell and tube gas-to-gas heat exchangers is provided. The process and system of the invention utilize the flow velocity of the gas within the tubes to facilitate cleaning of the tubes by adding, when necessary, grit to the contaminated gas flow.

A method for abrasive flow machining includes moving an abrasive media through a high-aspect passage of a workpiece. Local pressure of the abrasive media is increased at target abrasion surfaces of the high-aspect passage using a passage geometry that is configured to direct flow of the abrasive media into the target abrasion surfaces such that the target abrasion surfaces are preferentially polished by the abrasive media over other, non-targeted surfaces of the high-aspect passage at which the flow of the abrasive media is not directed into.

A cutting head assembly uses multiple cutting heads directing ultra-high pressure fluid in different directions towards an inner surface of a pipe to be cut in order to complete a full cut of the pipe while rotating or revolving the multiple cutting heads less than 360 degrees relative to central axis. The ultra-high pressure fluid mixes with abrasive inside fittings on or near each of the nozzles to further assist with cutting through the pipe. Some cutting head assemblies have two nozzles, while other cutting head assemblies have three or four nozzles.

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.