Disclosed is a paired compress gas energy power system and power method. The paired compress gas energy power system includes: a paired compress gas energy storage device having a high pressure air container and a low pressure air container, the high pressure air container is filled with a high pressure gas, the low pressure air container is filled with a low pressure gas; a paired compress gas energy engine, respectively connected to the low pressure air container and the high pressure air container; and a power device connected to the rotary shaft of the paired compress gas energy engine, the power device is driven by the paired compress gas energy engine. The invention converts the paired compress gas energy into the mechanical torque energy through the paired compress gas energy engine to drive the power device to work, or to drive the generator to generate electric energy

Disclosed is a paired air pressure energy production system and a production method thereof. The paired air pressure energy production system includes a paired air pressure energy storage device, a pneumatic compressor and a power device, The paired air pressure energy storage device includes a high pressure air container and a low pressure air container, the high pressure air container is filled with first gas, and the low pressure air container is filled with second gas; and the power device is connected with a rotating shaft of the pneumatic compressor and used for driving the rotating shaft of the pneumatic compressor to rotate. According to the invention energy in a natural environment is collected by the power device, and is converted into mechanism energy, so as to achieve the aim of producing paired air pressure energy.

A pneumatic actuator is designed to dispense a predetermined volume of compressed air from a main tank to an outlet of a solenoid valve. The actuator includes a secondary tank designed to contain such predetermined volume of compressed air. The secondary tank is placed in communication with the main tank through a narrow duct having a through-flow section much smaller than that of the outlet of the solenoid valve.

The invention discloses a paired air pressure energy storage device, an inspection method and a balance detection mechanism thereof. The paired air pressure energy storage device includes an inner body and an outer body sleeved outside the inner body. The inner body is filled with a first gas. A cavity formed between the outer body and the inner body is filled with a second gas. There is a gas energy pressure difference between the first gas and the second gas. The gas energy pressure difference is relative pressure gas energy. The invention can store two gases with different pressure intensities, has a simple structure, is convenient for transportation, and is favorable for effective energy storage and long-term storage of gases.

A compressed natural gas storage and dispensing system having descending pressure bulk storage banks in fluid communication with a supply source for CNG and dispensing storage banks in fluid communication with the descending pressure bulk storage bank, both banks being in fluid communication with fuel dispensers, wherein the delivery pressure of the CNG during, simultaneous refueling of CNG powered vehicles is equalized.

A pressure container arrangement includes a plurality of pressure containers, a number of safety valves, and a number of connection lines. The plurality of pressure containers are connected in fluid terms by the number of connection lines. At least one of the number of safety valves is disposed between a respective two of the plurality of pressure containers which are connected to each other. The number of safety valves are constructed to close from a predetermined maximum throughflow and/or from a predetermined maximum pressure difference.

A method of and apparatus for transferring gas. The method comprising expanding a process gas 101 having a first temperature to produce a first volume of the process gas that has a second temperature that is greater than the first temperature, and a second volume of the process gas that has a third temperature that is less than the first temperature. The method further comprises displacing at least some of the second volume of the process gas 102 into the receiving vessel using a piston gas, wherein the piston gas is of the same type as the process gas.

A compressed natural gas storage and dispensing system having descending pressure bulk storage banks in fluid communication with a supply source for CNG and dispensing storage banks in fluid communication with the descending pressure bulk storage bank, both banks being in fluid communication with fuel dispensers, wherein the delivery pressure of the CNG during, simultaneous refueling of CNG powered vehicles is equalized.

An array of pressure vessels for storage of a compressed gas includes at least one Type 4 pressure vessel and at least one Type 1 pressure vessel. The Type 1 pressure vessel is in fluid communication with the at least one Type 4 pressure vessel. A metal wall of the at least one Type 1 pressure vessel has a Type 1 thermal conductance that is greater than a Type 4 thermal conductance of the at least one Type 4 pressure vessel.

The present invention also provides a liquid reservoir assembly 10 of the type that can store and release a fluid under pressure, the assembly 10 having an outer body formed of an open ended tube 20 which is closed by end formations 70, 80 which engage respective ends of the open ended tube 20 and are held stationary with respect to the open ended tube 20, the end formations 70,80 holding between them an elongated elastic inner tube 30 sealing secured to the end formations, the elastic inner tube 30 being axially pre-tensioned or stretched from its natural or rest state, and secured to the ends in the pre-tensioned or stretched condition.