A nozzle device produces a more convergent water jet to improve the quality of a cut surface. The nozzle device includes a liquid supply channel for supplying a liquid, an orifice for discharging the liquid supplied from the liquid supply channel to produce a water jet, a straightening unit arranged downstream of the water jet from the orifice and having a through-hole to surround the water jet, a first air supply channel for supplying a gas toward a location upstream of the water jet from the through-hole and toward the orifice, and a second air supply channel arranged downstream of the water jet from the first air supply channel for supplying the gas toward a location inside the through-hole or a location downstream of the water jet from the through-hole.

A nozzle device produces a more convergent water jet to improve the quality of a cut surface. The nozzle device includes a liquid supply channel for supplying a liquid, an orifice for discharging the liquid supplied from the liquid supply channel to produce a water jet, a straightening unit arranged downstream of the water jet from the orifice and having a through-hole to surround the water jet, a first air supply channel for supplying a gas toward a location upstream of the water jet from the through-hole and toward the orifice, and a second air supply channel arranged downstream of the water jet from the first air supply channel for supplying the gas toward a location inside the through-hole or a location downstream of the water jet from the through-hole.

The invention features methods and apparatuses for altering a cutting operation during operation of the pressurized liquid jet cutting system. A pressurized liquid jet cutting system includes a pressurized fluid jet cutting head having a plurality of components. The cutting head further includes a sensor configured to sense an operating condition. The sensor transmits a value of the operating condition to a computing device, which alters a subsequent cutting operation. Further, the fluid jet cutting head is configured to work with a data storage mechanism and a reader, such that the data storage mechanism in contact with a body of the fluid jet cutting head is configured to communicate information to a reader of the pressurized liquid jet cutting system. The information is usable to determine a condition of replacement (e.g., a remaining usable life) of the replaceable component, change an operating pressure, change a cutting speed, or alter another operating parameter of the pressurized liquid jet cutting system.

A pneumatic-controlled abrasive blasting system that includes a blast hose; and a deadman assembly coupled with the blast hose. The deadman assembly has a primary deadman valve; and a secondary deadman valve. There is an air source configured for fluid communication with each of the primary and secondary deadman valves and the blast hose. There is a regulator valve disposed between the deadman assembly and the air source. The regulator is configured to reduce the pressure of airflow to the deadman assembly.

A pneumatic-controlled abrasive blasting system that includes a blast hose; and a deadman assembly coupled with the blast hose. The deadman assembly has a primary deadman valve; and a secondary deadman valve. There is an air source configured for fluid communication with each of the primary and secondary deadman valves and the blast hose. There is a regulator valve disposed between the deadman assembly and the air source. The regulator is configured to reduce the pressure of airflow to the deadman assembly.

A sublimating and abrasive media blasting system including an air compressor, a sublimating blasting unit operably connected to the air compressor and configured to supply a sublimating material, and an abrasive media container operably connected to the air compressor and configured to supply an abrasive media. The blasting system also includes a blasting applicator assembly operably connected to the abrasive media container and to the sublimating blasting unit such that the blasting applicator receives the sublimating material and the abrasive media. The blasting applicator assembly includes an applicator operably connected to the sublimating blasting unit, a first trigger configured to control a flow of the sublimating material and a second trigger configured to control a flow of the abrasive media, an injector, and a nozzle.

Methods of cleaning flow path components of power systems, and sump purge kits used in the same or related methods are disclosed. A method of cleaning may include removing a casing of the turbine system to expose a rotor of the turbine system, a plurality of flow path components coupled to the rotor and/or the casing, and a sump system in communication with the rotor. The method may also include pressurizing the sump system in communication with the rotor, and sealing a plurality of openings formed in the rotor. Additionally, the method may include exposing the rotor and the plurality of flow path components to steam to dry hydrocarbons formed on a surface of the rotor and a surface of the plurality of flow path components, and blasting the rotor and the plurality of flow path components with solid carbon dioxide (CO.sub.2) to dislodge the dried hydrocarbons.

Methods of cleaning flow path components of power systems, and sump purge kits used in the same or related methods are disclosed. A method of cleaning may include removing a casing of the turbine system to expose a rotor of the turbine system, a plurality of flow path components coupled to the rotor and/or the casing, and a sump system in communication with the rotor. The method may also include pressurizing the sump system in communication with the rotor, and sealing a plurality of openings formed in the rotor. Additionally, the method may include exposing the rotor and the plurality of flow path components to steam to dry hydrocarbons formed on a surface of the rotor and a surface of the plurality of flow path components, and blasting the rotor and the plurality of flow path components with solid carbon dioxide (CO.sub.2) to dislodge the dried hydrocarbons.

The apparatus for cleaning surfaces comprises a body (1) comprising a tank (2) for containing an abrasive material and a first duct (19) for a flow of compressed air which extends adjacent to said tank (2) along the whole length of said tank (2). The apparatus comprises as well a mixing valve (31), associated with said tank (2), for mixing said abrasive material with said compressed air.

The apparatus for cleaning surfaces comprises a body (1) comprising a tank (2) for containing an abrasive material and a first duct (19) for a flow of compressed air which extends adjacent to said tank (2) along the whole length of said tank (2). The apparatus comprises as well a mixing valve (31), associated with said tank (2), for mixing said abrasive material with said compressed air.