Systems, assemblies, and methods to enhance intake air flow to a gas turbine engine of a hydraulic fracturing unit

An intake air treatment assembly to enhance the efficiency of operation of a gas turbine engine including an inlet assembly positioned to supply intake air to the gas turbine engine, the intake air treatment assembly comprising:

• a turbine housing configured to at least partially enclose the gas turbine engine and the inlet assembly and positioned to facilitate supply of intake air to the inlet assembly of the gas turbine engine;
• a filtration assembly connected to the turbine housing and positioned to provide a flow path to supply at least partially filtered intake air to the inlet assembly of the gas turbine engine, the filtration assembly comprising:
• a pre-cleaner positioned to receive ambient air drawn into the filtration assembly via operation of the gas turbine engine and comprising one or more inertial separators configured to separate a first portion of one or more of particles or liquid from the ambient air, thereby to provide at least partially filtered intake air,
• wherein the one or more inertial separators comprise:
• an air flow tube having a proximal end connected to the exterior panel, extending toward the interior panel, and terminating at a distal end, the air flow tube defining an interior cross-sectional area;
• and
• a diverter connected to the air flow tube and positioned to cause ambient air entering the air flow tube to swirl as the ambient air flows from the proximal end of the air flow tube to the distal end of the air flow tube.

A hydraulic fracturing unit to enhance flow of fracturing fluid into a wellhead during a high-pressure fracturing operation, the hydraulic fracturing unit comprising:

• a chassis having a longitudinal chassis axis and a width perpendicular to the longitudinal chassis axis;
• a gas turbine engine supported by the chassis;
• an inlet assembly connected to the gas turbine engine to supply intake air to the gas turbine engine;
• a hydraulic fracturing pump connected to the gas turbine engine;
• and
• an intake air treatment assembly associated with the intake assembly to enhance the efficiency of operation of the gas turbine engine, the intake air treatment assembly comprising:
• a turbine housing at least partially enclosing the gas turbine engine and the inlet assembly and positioned to facilitate supply of intake air to the inlet assembly of the gas turbine engine;
• a filtration assembly connected to the turbine housing and positioned to provide a flow path to supply at least partially filtered intake air to the inlet assembly, the filtration assembly comprising:
• a pre-cleaner positioned to receive ambient air drawn into the filtration assembly via operation of the gas turbine engine and comprising one or more inertial separators configured to separate a first portion of one or more of particles or liquid from the ambient air, thereby to provide at least partially filtered intake air,
• wherein the one or more inertial separators comprise:
• an air flow tube having a proximal end connected to the exterior panel, extending toward the interior panel, and terminating at a distal end, the air flow tube defining an interior cross-sectional area;
• and
• a diverter connected to the air flow tube and positioned to cause ambient air entering the air flow tube to swirl as the ambient air flows from the proximal end of the air flow tube to the distal end of the air flow tube.