The invention relates to methods and systems for the storage and recovery of energy using open-air hydraulic-pneumatic accumulator and intensifier arrangements that combine at least one accumulator and at least one intensifier in communication with a high-pressure gas storage reservoir on a gas-side of the circuits and a combination fluid motor/pump, coupled to a combination electric generator/motor on the fluid side of the circuits.

Systems and methods for energy storage and recovery using compressed gas

The invention relates to systems and methods for rapidly and isothermally expanding and compressing gas in energy storage and recovery systems that use open-air hydraulic-pneumatic cylinder assemblies, such as an accumulator and an intensifier in communication with a high-pressure gas storage reservoir on a gas-side of the circuits and a combination fluid motor/pump, coupled to a combination electric generator/motor on the fluid side of the circuits. The systems use heat transfer subsystems in communication with at least one of the cylinder assemblies or reservoir to thermally condition the gas being expanded or compressed.

Systems and methods for energy storage and recovery using rapid isothermal gas expansion and compression

The invention relates to systems and methods including an energy conversion system for storage and recovery of energy using compressed gas, a source of recovered thermal energy, and a heat-exchange subsystem in fluid communication with the energy conversion system and the source of recovered thermal energy.

Systems and methods for combined thermal and compressed gas energy conversion systems

The invention relates to systems and methods for rapidly and isothermally expanding gas in a cylinder. The cylinder is used in a staged hydraulic-pneumatic energy conversion system and includes a gas chamber (pneumatic side) and a fluid chamber (hydraulic side) and a piston or other mechanism that separates the gas chamber and fluid chamber while allowing the transfer of force/pressure between each opposing chamber. The gas chamber of the cylinder includes ports that are coupled to a heat transfer subassembly that circulates gas from the pneumatic side and exchanges its heat with a counter flow of ambient temperature fluid from a reservoir or other source.

System and method for rapid isothermal gas expansion and compression for energy storage

The invention relates to power generation and energy storage and recovery. In particular, the invention relates to compressed gas energy storage and recovery systems using staged pneumatic conversion systems for providing narrow pressure ranges to a hydraulic motor.

Systems and methods for improving drivetrain efficiency for compressed gas energy storage and recovery systems

PROBLEM TO BE SOLVED: To provide a control apparatus capable of operating a hand brake assembly of a railroad vehicle. SOLUTION: This control apparatus includes a hydraulic source 14 engageable with the railroad vehicle, and a pneumatic valve 16 is connected with the hydraulic source to start the transmission of hydraulic pressure from the hydraulic source. A force adjusting valve 18 is connected with the pneumatic valve to receive hydraulic pressure from the pneumatic valve, and a mechanically driven valve 20 is connected with the force adjusting valve to receive hydraulic pressure from the force adjusting valve to operate the hand brake assembly by transmitting the hydraulic pressure to a brake cylinder 12. An electronically controlled valve may be arranged at an intermediate position between the hydraulic source and the force adjusting valve to start the communication of fluid from the hydraulic source to the force adjusting valve electrically.

Control apparatus for operating and releasing hand brake

A control apparatus is provided which is engageable with a hand brake assembly on a railway vehicle for operation of an application cylinder for applying the hand brake assembly. This apparatus includes a source of fluid pressure which is engageable with the railway vehicle. A pneumatic actuation valve which is connected to the source of fluid pressure for initiating communication of fluid pressure from the source of fluid pressure. A force regulating valve which is connected to the pneumatic actuation valve for receiving the fluid pressure from the actuation valve and a mechanically driven valve is connected to the force regulating valve for receiving the fluid pressure from the force regulating valve and for communicating the fluid pressure to the application cylinder to apply the hand brake assembly. An electrically controlled valve may be positioned intermediate the source of fluid pressure and the force regulating valve to enable electrical actuation of fluid communication from the source of fluid pressure to the force regulating valve. Additionally, a pneumatic actuation valve and/or an electrically controlled actuation valve may be provided to communicate fluid pressure from a source of fluid pressure to a release cylinder in order to release the brakes of the hand brake assembly.

Control apparatus for the application and release of a hand brake

An apparatus to enable the automatic release of a railway vehicle hand brake system from either side of the vehicle comprises a source of fluid pressure engageable with the vehicle. A release cylinder, operable by fluid pressure, is connected to a hand brake mechanism. A valve is connected intermediate the source of fluid pressure and the release cylinder causing the release cylinder to release the hand brake system. A first valve actuator is disposed on a first side of the vehicle and is connected intermediate the valve and the source of fluid pressure. A second valve actuator is disposed on an opposed second side of the vehicle and is connected intermediate the valve and the source of fluid pressure. Both the first and second valve actuators cause the valve to initiate communication of fluid pressure from the source of fluid pressure to the release cylinder.

Push button two side operation hand brake release

An apparatus (10) to enable the automatic release of a railway vehicle hand brake system from either side of the vehicle is provided. The apparatus comprises a source of fluid pressure (14) engageable with the vehicle. A release cylinder (16), which is operable by fluid pressure, is connected to a hand brake mechanism (12) that is engageable with a brake system disposed on the vehicle. A valve means (18) is connected intermediate the source of fluid pressure and the release cylinder. This valve means causes the release cylinder to release the hand brake system. A first valve actuation means (20) is disposed on a first side of the vehicle and is connected intermediate the valve means (18) and the source of fluid pressure (14). This first valve actuation means (20) causes the valve means to initiate communication of fluid pressure from the source of fluid pressure to the release cylinder (16). A second valve actuation means (22) is disposed on an opposed second side of the vehicle and is connected intermediate the valve means (18) and the source of fluid pressure (14). This second valve actuation means (22) also causes the valve means to initiate communication of fluid pressure from the source of fluid pressure to the release cylinder (16).

Push button for releasing a railway vehicle hand brake from either side of the vehicle

Hand brake autoamtic releasing device capable of actuating on both sides using button

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