A hydraulic energy flow conversion device is for use in association with a compressed air storage unit and an input device. The input device is for inputting mechanical energy. The hydraulic energy flow conversion device includes a first hydraulic cylinder and a means for decreasing the displacement rate during the compression cycle. The first hydraulic cylinder includes a first hydraulic piston and has a compression cycle, an expansion cycle and a displacement rate. The first hydraulic cylinder is operably connected to the compressed air storage unit. The first hydraulic piston is operably connected to the input device. The energy input device may be a wind turbine.

An energy storage and recovery system employs air compressed utilizing power from an operating wind turbine. This compressed air is stored within one or more chambers of a structure supporting the wind turbine above the ground. By functioning as both a physical support and as a vessel for storing compressed air, the relative contribution of the support structure to the overall cost of the energy storage and recovery system may be reduced, thereby improving economic realization for the combined turbine/support apparatus. In certain embodiments, expansion forces of the compressed air stored within the chamber, may be relied upon to augment the physical stability of a support structure, further reducing material costs of the support structure.

An energy storage and recovery system employs air compressed utilizing power from an operating wind turbine. This compressed air is stored within one or more chambers of a structure supporting the wind turbine above the ground. By functioning as both a physical support and as a vessel for storing compressed air, the relative contribution of the support structure to the overall cost of the energy storage and recovery system may be reduced, thereby improving economic realization for the combined turbine/support apparatus. In certain embodiments, expansion forces of the compressed air stored within the chamber, may be relied upon to augment the physical stability of a support structure, further reducing material costs of the support structure.

The present invention discloses a fully automatic device for pumping cold air into block-stone subgrade and includes an outer cylinder, an inner cylinder, a power system and an air pumping system; and utilizes natural wind to drive the air pumping system to operate for the purpose of pumping cold air into a block-stone subgrade, and achieves the effect of pumping cold air into the block-stone subgrade in cold seasons and keeping warm air out of the block-stone subgrade in warm seasons by disposing a temperature-sensitive clutch. The present invention may effectively improve the engineering applicability of the block-stone subgrade construction technology in the areas with heavy snowfall; the present invention effectively improves the performance of the block-stone subgrade as a thermal semiconductor on an inter-annual scale and further protects the permafrost underlying the subgrade.

The present invention discloses a fully automatic device for pumping cold air into block-stone subgrade and includes an outer cylinder, an inner cylinder, a power system and an air pumping system; and utilizes natural wind to drive the air pumping system to operate for the purpose of pumping cold air into a block-stone subgrade, and achieves the effect of pumping cold air into the block-stone subgrade in cold seasons and keeping warm air out of the block-stone subgrade in warm seasons by disposing a temperature-sensitive clutch. The present invention may effectively improve the engineering applicability of the block-stone subgrade construction technology in the areas with heavy snowfall; the present invention effectively improves the performance of the block-stone subgrade as a thermal semiconductor on an inter-annual scale and further protects the permafrost underlying the subgrade.

A hydraulic drive pump system incorporates: 1) a concentric, multi-lobed cam that produces multiple strokes per revolution; 2) a piston profile that maximizes the number of large-diameter pistons arranged radially around the centerline axis; 3) a flexible piston base 50 with internal oil flow; 4) hydraulically connected cylinders which counter displacement issues raised in item 2 above; 5) variable stroke capability leading to infinitely variable output the ability to disengage unneeded cylinders from the cam; 6) integral reservoir and accumulator capacity; 7) compact, external pressure and return manifolds; 8) axially-oriented pressure and return manifolds 60, 70, and 9) a hydraulic reservoir and pressure tank integrated into the body of the pump.

A hydraulic drive pump system incorporates: 1) a concentric, multi-lobed cam that produces multiple strokes per revolution; 2) a piston profile that maximizes the number of large-diameter pistons arranged radially around the centerline axis; 3) a flexible piston base 50 with internal oil flow; 4) hydraulically connected cylinders which counter displacement issues raised in item 2 above; 5) variable stroke capability leading to infinitely variable output the ability to disengage unneeded cylinders from the cam; 6) integral reservoir and accumulator capacity; 7) compact, external pressure and return manifolds; 8) axially-oriented pressure and return manifolds 60, 70, and 9) a hydraulic reservoir and pressure tank integrated into the body of the pump.

Wind turbine, comprising a tower and a head mounted at an upper end of said tower, rotational around a head axis, wherein a propeller is mounted to said head, rotatable around a propeller axis, wherein a hydraulic pump is provided, driven by said propeller, wherein the hydraulic pump is provided substantially in the propeller.

Wind turbine, comprising a tower and a head mounted at an upper end of said tower, rotational around a head axis, wherein a propeller is mounted to said head, rotatable around a propeller axis, wherein a hydraulic pump is provided, driven by said propeller, wherein the hydraulic pump is provided substantially in the propeller.