Ohmstede Mechanical Services, Inc.

C.h. Heist Corp.

Austin Industrial Services, LP

Other

Starcon International, Inc.

Thomas B Boisture

Larry D McGrew

Gene P Livingston

James D Jeffrey

Robert A Baten

Howard Lefler

Robert G Wetzel

An improved trailer for loading and unloading a heat exchanger tube bundle is disclosed. The trailer provides for the transport of tube bundles and includes seal pans which capture debris and other materials falling from the tube bundle during transport. The present invention also provides for the periodic placement of slideable supports under a bundle as it is pushed onto a trailer.

Trailer for loading and unloading heat exchanger tube bundles

A trailerable load-transferring assembly is removably attachable to the rear portion of a load-bearing vehicle. The load-transferring assembly includes a pivot connection, an auxiliary axle, an elongate abutment member that extends between a free end and an abutment end, and an actuator assembly disposed between the free end of the abutment member and the auxiliary axle. When the load-transferring assembly is connected to the vehicle by the pivot connection, the actuator assembly is actuated such that it applies a lifting force on the free end relative to the auxiliary axle. The lifting force causes the abutment member to pivot about the pivot connection, bringing the abutment end of the abutment member into an abutting engagement with an abutment surface attached to the frame of the load-bearing vehicle. The lifting force and abutting engagement prevents transverse movement of the load-transferring assembly relative to the vehicle and transfers a portion of the load from the vehicle's rear axles to the auxiliary axle.

Load-transferring trailer assembly attachable to a load-bearing vehicle

A safety apparatus for use in a hydrocutting or hydroblasting system which has a normally closed shutoff valve for coupling a high pressure water source to a hydrocutting or hydroblasting gun. The shutoff valve is controlled by a solenoid valve coupled between an air-to-open (ATO) input of the shutoff valve and an air power source. A normally open inductive proximity switch, through a relay circuit, provides a control signal to the solenoid valve. The inductive proximity switch is located near a cutting or cleaning nozzle of the gun. When the inductive proximity switch comes in close proximity of a metal object to be cleaned or cut, the proximity switch closes, thereby opening the solenoid valve and the shutoff valve. When the gun is removed from the physical proximity of the metal, the inductive proximity switch opens, thereby turning off the shutoff valve.

Safety apparatus for high pressure liquid jet system

An improved hydroblasting gun having an on/off safety switch system. The on/off switch system comprises at least two actuatable triggers each displacing a specified volume of incompressible fluid which, when coupled with a predetermined volume within an actuator, displaces a piston initiating a signal. In specific application, two separate triggers are depressed displacing a predetermined volume in an actuator adjacent a shut-off valve. Until the actuator fully opens the shut-off valve, hydroblasting operations may not begin. In this manner, the chances of accidental discharge through the depression of a single trigger are eliminated and preferred ergonomical characteristics are provided.

Hydroblasting spray gun having an on/off safety switch system

An improved safety switch system for hydroblasting and hydrocutting operations. The switch system comprises at least two actuatable triggers each displacing a specified volume of incompressible fluid which, when coupled with a predetermined volume within an actuator, displaces a piston initiating a signal. In specific application within a hydroblasting gun, two separate triggers are depressed displacing a predetermined volume in an actuator adjacent a dump valve. Until the actuator fully closes the dump valve, hydroblasting operations may not begin. In this manner, the chances of accidental discharge through the depression of a single trigger are eliminated and preferred ergonomical characteristics are provided.

Safety switch system for hydroblasting operations

A furnace cleaning apparatus for cleaning a cyclone furnace with a fluid from a fluid source. The furnace cleaning apparatus comprises a beam assembly capable of being pivotably mounted to the cyclone furnace. A rotary actuator is connected to the beam assembly for turning the beam assembly. A trolley is movably mounted to the beam assembly. A chain drive assembly and a drive source for moving the trolley relative to the beam assembly are mounted to the beam assembly. An articulated arm assembly is pivotally connected to the trolley. A rotary actuator is mounted to the articulated arm assembly for pivoting the articulated arm assembly relative to the trolley. A nozzle is connected to a second end of the articulated arm assembly. A fluid conduit connects the nozzle to a fluid source.

Furnace cleaning apparatus

A heat exchanger tube bundle extractor capable of being used either suspended from a crane or while mounted onto a rigid extendible boom. The extractor features brackets for attaching of the extractor to cables suspended from a crane. The extractor can also be mounted onto an extendible boom having an articulated head. When desired, the bundle extractor can be used while mounted onto the boom. If crane operations are preferred, the extractor can be readily detached from the boom and suspended from a crane at much higher elevations.

Detachable crane- or boom-operated heat exchanger tube bundle extractor

A heat exchanger tube bundle extractor capable of being used either suspended from a crane or while mounted onto a rigid extendible boom. The extractor features brackets for attaching the extractor to cables suspended from a crane. The extractor can also be mounted onto an extendible boom having an articulated head. When desired, the bundle extractor can be used while mounted onto the boom. If crane operations are preferred, the extractor can be readily detached from the boom and suspended from a crane at much higher elevations.

A method for cleaning the interior wall of a tube with a slurry and a tubular lance. The method includes the steps of inserting an end of the tubular lance into the tube and pumping a fluid through the tubular lance into the tube. A slurry is pumped into the interior of the tube between the tubular lance and the interior of the tube. The slurry mixes with the fluid at the end of the tubular lance in the tube and the slurry and fluid mixture is propelled against the interior tube wall at the end of the tubular lance to clean the interior wall of the tube.

Method for cleaning tube bundles using a slurry

An improved multi-lance cleaning apparatus for cleaning the interior of heat exchanger tubes, the apparatus having a lance housing, a slidable manifold within the lance housing, a single conduit connecting the manifold with a high pressure, high volume fluid source, a spool for storing the conduit permitting it to be advanced and retracted, means for moving the manifold within the housing, a plurality of lances removably attached to the manifold and adapted to fit within a heat exchanger tube and tube guides to guide and support the lances. The lances include a plurality of flexible lances attached to rigid lances and adapted to fit within a heat exchanger tube which are capable of traversing a curved path within the tube bundle.

Multi-lance tube cleaning system having flexible portions

A multi-lance cleaning apparatus for cleaning the interior of heat exchanger tubes, the apparatus having a lance housing, a slidable manifold within the lance housing, a single conduit connecting the manifold with a high pressure, high volume fluid source, a spool for storing the conduit permitting it to be advanced and retracted, means for moving the manifold within the housing, a conduit securing and supporting assembly, a plurality of lances removably attached to the manifold and adapted to fit within a heat exchanger tube and tube guides to guide and support the lances. The apparatus further includes a means for positioning the housing with respect to a heat exchanger tube bundle to be cleaned.

Multi-lance tube cleaning system

A multi-lance cleaning apparatus for cleaning the interior of heat exchanger tubes, the apparatus having a lance housing, a slidable manifold within the lance housing, a single conduit connecting the manifold with a high pressure, high volume, fluid source, a hose enclosure for enclosing the high pressure water hose permitting the hose to advance and retract, means for moving the manifold within the housing, a plurality of lances removably attached to the manifold and adapted to fit within a heat exchanger tube, tube guides to guide and support the lances, and a slide plate on which the manifold is located for preventing the lances from bending and entering the hose enclosure. The apparatus may further include means for positioning and guiding the housing with respect to a heat exchanger tube bundle to be cleaned.

Multi-lance tube cleaning system having sliding plate

A multi-hose flexible lance tube cleaning apparatus for cleaning the interior of heat exchanger tubes, the apparatus having a spool and means for rotating the spool. A plurality of tubular flexible lances are reeled on the spool assembly. Each flexible lance is in communication with a high pressure fluid source and is adapted to fit within a heat exchanger tube. The flexible lances advance into the interior of the heat exchanger tubes as the spool is rotated to reel out the flexible lances and as the high pressure fluid exits the jetting tips of the flexible lances. The cleaning apparatus also includes tube guides to guide and support the flexible lances and further includes a positioning assembly for positioning the flexible lances in substantial alignment with the heat exchanger tubes.

Multi-hose flexible lance tube cleaning system

A mobile tube bundle cleaning apparatus comprised of a truck mounted fluid and hydraulic pressure sources including high pressure pumps and diesel engines. The apparatus further includes a trailer mounted tube bundle cleaning system including an articulable mobile crane, outriggers for stabilizing the trailer during cleaning operations and a system for supporting and rotating a tube bundle during cleaning operations. The apparatus further includes a remote control pedestal from which an operator may control the fluid pressurizing system, the crane and the operation of the tube bundle rotating system.

Growing community of inventors

Baytown, TX, United States of America

Thomas B Boisture