Water-jet cleaning system and a method of cleaning a heat exchanger. The equipment includes a rotary tool having a lance with at least two degrees of freedom. The lance's movements relative to openings defined in the heat exchanger face plate are controlled via a smart indexing controller. The controller includes an electronic communication device that is specifically programmed to selectively activate various components of the rotary tool and a water delivery system. The programming utilizes an observed, learned, or uploaded pattern of the heat exchanger tube openings to selectively rotate the lance relative to the rotary tool's mounting assembly or linearly move the lance towards or away from the mounting assembly. The controller moves the lance to align a nozzle thereon with a selected opening in the face plate and then delivers a high pressure water jet therethrough.

A heat exchanger cleaning device is provided. The cleaning device includes a drive motor configured to rotate a gearbox, a slip clutch, and a support beam about a first axis. The support beam carries a thread rod, a second motor, and one or more carriage assemblies. The carriage assemblies move linearly as the second motor rotates the threaded rod. The carriage assemblies include a support tube for receiving an ultra-high pressure tube therethrough. The carriage assemblies adjust relative to the heat exchanger such that the UHP tube may be inserted through the support tube into a hole of the heat exchanger. Therein the UHP tube may be advanced to clean sediment from the heat exchanger tube.

A fuel gas heater includes a container; a gas inflow chamber defined in one end of the container and having a gas inlet; a gas outflow chamber defined in the one end and having a gas outlet; U-shaped heat transfer pipes disposed inside the container, the pipes each having one end communicating with the gas inflow chamber and another end communicating with the gas outflow chamber; a heating medium supply port; a heating medium discharge port; a gas inflow opening disposed to face positions at which the pipes communicate with the gas inflow chamber; a gas inflow lid that enables the gas inflow opening to be opened and closed; a gas outflow opening disposed to face positions at which the pipes communicate with the gas outflow chamber; and a gas outflow lid that enables the gas outflow opening to be opened and closed.

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.

A fuel gas heater includes a container; a gas inflow chamber defined in one end of the container and having a gas inlet; a gas outflow chamber defined in the one end and having a gas outlet; U-shaped heat transfer pipes disposed inside the container, the pipes each having one end communicating with the gas inflow chamber and another end communicating with the gas outflow chamber; a heating medium supply port; a heating medium discharge port; a gas inflow opening disposed to face positions at which the pipes communicate with the gas inflow chamber; a gas inflow lid that enables the gas inflow opening to be opened and closed; a gas outflow opening disposed to face positions at which the pipes communicate with the gas outflow chamber; and a gas outflow lid that enables the gas outflow opening to be opened and closed

A device and system are disclosed to clean the interior of tubes in air-cooled heat exchangers. The device is attached at each end of a tube by electromagnetism; either directly to a ferromagnetic tube header, or to a ferromagnetic plate secured to a non-ferromagnetic plug-type header or to a plate-type header of any metal. High pressure air with entrained dry finely-divided abrasive is conducted through a nozzle supported by the device. At the other end of the tube, another device supports a nozzle that captures the air, spent abrasive, and removed material. Spent abrasive and removed material are separated by filtration from the air before the air is exhausted to the environment. Tubes are cleaned to a bright metal condition, suitable for inspection or application of a corrosion-resistant coating, or to a lesser level of cleanliness appropriate for return to service.

Cleanout systems are disclosed. An example environmental control system includes an exhaust plenum to exhaust cooling fluid from a heat exchanger outlet of a heat exchanger, and a cleanout system coupled to the exhaust plenum adjacent the heat exchanger outlet. The cleanout system includes a cleanout passageway to fluidly couple a cleanout inlet accessible from an outer surface of the exhaust plenum and a cleanout outlet in fluid communication with the heat exchanger outlet. The cleanout system is to enable removal of particulate from the heat exchanger without disassembling the heat exchanger from the exhaust plenum or an air intake.

An automatic washing apparatus for a heat exchanger is proposed. The automatic washing apparatus is configured to recognize positions of tube holes through a camera, and to automatically wash the tube holes. The automatic washing apparatus is also configured to be able to automatically wash an external bundle and internal tubes of a heat exchanger in accordance with set operation patterns of an external washing module and an internal washing module, and to be able to reuse washing water used for washing a heat exchanger as washing water by reprocessing the washing water.

A system and an apparatus for positioning a plurality of flexible cleaning lances through tubes penetrating a tube sheet of a heat exchanger tube sheet, includes a smart lance tractor drive, a controller, and a tumble box connected to the controller operable to generate and/or distribute electrical power to the AC induction sensor from an air pressure source, supply electrical power to the controller and distribute pneumatic power to pneumatic motors for positioning the tractor drive on the positioner frame. The smart tractor drive includes sensors for detection of mismatch between expected and actual lance positions, sense lance insertion distance and lance removal and provide automated drive reversal operation to remove blockages within tubes being cleaned.

A compact flexible lance propelling apparatus is disclosed that is mountable on a pipe end. The apparatus includes a drive mechanism, an adaptable support that can be fastened directly to the pipe end which carries the drive mechanism, a remote control console, and a hose take-up drum spaced from the drive mechanism. The drive mechanism includes a driven roller and a follower roller sandwiching the flexible lance hose therebetween and a rotary cam lift mechanism for linearly raising the follower roller to permit insertion of the flexible lance hose and lowering the follower roller against the driven roller.