An elevated platform cooling assembly includes a portable assembly frame; a mast carried by the assembly frame, the mast selectively positional between a folded, collapsed transport configuration and an erected, extended functional and operational configuration; a fan carried by the mast; a fan motor drivingly engaging the fan; a working fluid pump and supply mechanism disposed in fluid communication with the fan motor; and 4 prime mover drivingly engaging the working fluid pump and supply mechanism. A method of cooling an elevated platform is also disclosed.

A method for controlling a pump system, the method comprising: receiving, from a flow sensor, flow data representing fluid flow at an input of a pump in a pump system, the pump system comprising a recycle line configured to redirect flow from an output of the pump to the input of the pump; determining, based on the flow data, configuration data specifying a hardware configuration of the pump system, and a model specifying a performance history of the pump system, that a recycle event is occurring or about to occur; and generating, based on the determining, an alert comprising a recommendation for a remedial action to reduce an amount of fluid flow through the recycle line during the recycle event relative to a baseline amount of fluid flow through the recycle line.

A method for controlling a pump system, the method comprising: receiving, from a flow sensor, flow data representing fluid flow at an input of a pump in a pump system, the pump system comprising a recycle line configured to redirect flow from an output of the pump to the input of the pump; determining, based on the flow data, configuration data specifying a hardware configuration of the pump system, and a model specifying a performance history of the pump system, that a recycle event is occurring or about to occur; and generating, based on the determining, an alert comprising a recommendation for a remedial action to reduce an amount of fluid flow through the recycle line during the recycle event relative to a baseline amount of fluid flow through the recycle line.

An electrically powered hydraulic fracturing system having pumps for pressurizing fracturing fluid, piping for carrying fracturing fluid, and vibration reducing equipment for use with the piping. The vibration reducing equipment includes helical coils that support the piping. The coils are made of a wire rope made of strands of steel cable twisted together. Grooved fittings are provided on some piping connections, and which allow pivoting between adjacent fluid conveyance members. Swivel joints are strategically located in the piping which allow rotational flexing between adjacent sections of the piping; thereby attenuating vibration in the piping but without stressing the piping.

A system can include an actuator with a piston rod that displaces in response to pressure in the actuator, a seal assembly that seals about the piston rod and includes seal cartridges, each including a dynamic seal sealingly engaging the rod, and each including a static seal sealingly engaging a seal assembly housing, and a port providing communication between a housing exterior and a housing interior between adjacent static seals. A method can include preventing leakage from a well with a seal assembly about a piston rod of a hydraulic actuator, the seal assembly including seal cartridges, each including a dynamic seal that sealingly engages the rod, and each including a static seal that sealingly engages a seal assembly housing, enabling communication through a housing sidewall to a housing interior between adjacent static seals, and reciprocably displacing the rod in response to pressure variations in the actuator.

Embodiments relate to a hydraulic fracturing system that includes a blender unit. The system includes an auger and hopper assembly to receive proppant from a proppant source and feed the proppant to the blender unit for mixing with a fluid. A first power source is used to power the blender unit in order to mix the proppant with the fluid and prepare a fracturing slurry. A second power source independently powers the auger and hopper assembly in order to align the hopper of the auger and hopper assembly with a proppant feed from the proppant source. Thus, the auger and hopper assembly can be stowed or deployed without use of the first power source, which is the main power supply to the blender unit.

The present invention relates to a pulsation damping system for a paint spray device for spraying paint including a pulsation damper for damping the pulsation of a paint stream, wherein the pulsation damper includes a housing, a chamber, a chamber inlet, a chamber outlet and a damping means. In this connection, an opening of the chamber outlet comprises a cross sectional area which is smaller than a cross sectional area of an opening of the chamber inlet, and as a result forms a throttle.

A buoy assembly for use with a pumping system to pump liquid and debris from a flooded shaft or well or any such structure with appreciable depth is provided. The buoy assembly includes a proximal tube that can couple to an end of a hose coupled at an opposite end to the pumping system. A buoy is coupled to the proximal tube that provides the buoy assembly with buoyancy that allows the buoy assembly to float on the liquid in the shaft. The buoy can have one or more aeration ports that can be selectively opened (by removing a plug therefrom) to allow airflow therethrough into the buoy. The buoy assembly also has an adapter socket with feet that define vents therebetween to allow passage of debris via the vents into the buoy. Flow of air into the buoy via the aeration ports facilitates lift of liquid and debris through the conduit during a pumping operation.

A buoy assembly for use with a pumping system to pump liquid and debris from a flooded shaft or well or any such structure with appreciable depth is provided. The buoy assembly includes a proximal tube that can couple to an end of a hose coupled at an opposite end to the pumping system. A buoy is coupled to the proximal tube that provides the buoy assembly with buoyancy that allows the buoy assembly to float on the liquid in the shaft. The buoy can have one or more aeration ports that can be selectively opened (by removing a plug therefrom) to allow airflow therethrough into the buoy. The buoy assembly also has an adapter socket with feet that define vents therebetween to allow passage of debris via the vents into the buoy. Flow of air into the buoy via the aeration ports facilitates lift of liquid and debris through the conduit during a pumping operation.

A dilute solution production apparatus produces a dilute solution of a second liquid containing at least one of a conductivity-imparting substance and an oxidation-reduction potential regulating substance by adding the second liquid to a first liquid, and is provided with: a first pipe through which the first liquid flows; a pump for adding the second liquid into of the first pipe via a second pipe; a degassing pipe which extends from the pump; a water quality sensor which is composed of a conductivity meter, a resistivity meter or an oxidation-reduction potential meter; and a control device for opening a degassing valve when a water quality detection value in the water quality sensor varies by a predetermined value or more.