A method of controlling a gas compression system includes comparing an engine load of an engine of the gas compression system during operation to a load threshold and controlling a suction valve coupled to an intake of a reciprocating compressor. The suction valve is controlled based at least in part on the comparison of the engine load to the load threshold. Controlling the suction valve includes incrementing the suction valve toward a closed position to reduce flow of a gas into the intake when the engine load is greater than or equal to the load threshold.

A magnetically coupled piston pump includes a piston, a pump body, and a set of drive magnets. The piston includes a set of piston magnets. Each piston magnet has poles arranged along a longitudinal axis of the piston, and each piston magnet is arranged in the piston so that the orientation of the poles of each piston magnet is the opposite of the orientation of each adjacent piston magnet. The piston is disposed in and permitted to move within the pump body. The set of drive magnets is arranged outside the pump body. Each drive magnet corresponds to a piston magnet, has poles arranged along the longitudinal axis, and is arranged so that the orientation of the poles is opposite the orientation of the poles of the corresponding piston magnet. A drive unit is coupled to the drive magnets for moving the drive magnets along the longitudinal axis.

A magnetically coupled piston pump includes a piston, a pump body, and a set of drive magnets. The piston includes a set of piston magnets. Each piston magnet has poles arranged along a longitudinal axis of the piston, and each piston magnet is arranged in the piston so that the orientation of the poles of each piston magnet is the opposite of the orientation of each adjacent piston magnet. The piston is disposed in and permitted to move within the pump body. The set of drive magnets is arranged outside the pump body. Each drive magnet corresponds to a piston magnet, has poles arranged along the longitudinal axis, and is arranged so that the orientation of the poles is opposite the orientation of the poles of the corresponding piston magnet. A drive unit is coupled to the drive magnets for moving the drive magnets along the longitudinal axis.

A water pump, including: a first housing, including a first cavity and further including a one-way water inlet and a one-way water outlet respectively in fluid communication with the first cavity; a flexible pumping part, having magnetism and elasticity, and being flexibly deformable, covering an outside of the first housing, and a second cavity is between the flexible pumping part and the first housing, a water permeable port configured to enable the first cavity and the second cavity to be in fluid communication is formed on the first housing; and a magnetic driving part, having magnetism, being configured to magnetically cooperate with the flexible pumping part to supply power to the flexible pumping part, the flexible pumping part deforms under the power to enable a fluid to conduct a pumping stroke and a suction stroke.

A water pump, including: a first housing, including a first cavity and further including a one-way water inlet and a one-way water outlet respectively in fluid communication with the first cavity; a flexible pumping part, having magnetism and elasticity, and being flexibly deformable, covering an outside of the first housing, and a second cavity is between the flexible pumping part and the first housing, a water permeable port configured to enable the first cavity and the second cavity to be in fluid communication is formed on the first housing; and a magnetic driving part, having magnetism, being configured to magnetically cooperate with the flexible pumping part to supply power to the flexible pumping part, the flexible pumping part deforms under the power to enable a fluid to conduct a pumping stroke and a suction stroke.

A drawdown compressor assembly for recovering natural gas from a gas line includes a first tubing configured for connection to a first pipe of the gas line at a one end of the first tubing. A compressor is attached to an opposite end of the first tubing and configured to draw natural gas from the first pipe through the first tubing and into the compressor for being compressed by the compressor. A second tubing is connected to the compressor at one end of the second tubing and configured for connection to a second pipe of the gas line at an opposite end of the second tubing. Activation of the compressor draws the natural gas from the first pipe through the first tubing and delivers compressed natural gas to the second pipe through the second tubing.

An air pumping device providing automatic sterilization and pumping of indrawn air for oxygenation or other purpose comprises a shell with an air inlet hole and an air outlet hole, an electromagnetic assembly, a transmission device, an air pumping module, and a sterilizer element. The transmission device includes a swinging element forth for acting forces in two directions alternatively on the air pumping module, to draw in and pump out sterilized air. The air pumping device has two air pumping modules is also disclosed, the two air pumping modules being arranged symmetrically on either side of the swing element, therefore the swing element creates an indrawing of air and an exhausting of air for every swing.

An air pumping device providing automatic sterilization and pumping of indrawn air for oxygenation or other purpose comprises a shell with an air inlet hole and an air outlet hole, an electromagnetic assembly, a transmission device, an air pumping module, and a sterilizer element. The transmission device includes a swinging element forth for acting forces in two directions alternatively on the air pumping module, to draw in and pump out sterilized air. The air pumping device has two air pumping modules is also disclosed, the two air pumping modules being arranged symmetrically on either side of the swing element, therefore the swing element creates an indrawing of air and an exhausting of air for every swing.

A gas compressor includes an incompressible fluid source for storing an incompressible fluid. A rotary shaft is coupled to the incompressible fluid source. Operation of the rotary shaft draws the incompressible fluid up or down the rotary shaft. A piston chamber is coupled to each piston in a set of pistons. The incompressible fluid is delivered to the first piston by a controlled fluid valve assembly, to drive the first piston. The centripetal force from the rotation of the rotary shaft and the force of incompressible fluid from an impeller drive the first piston to compress a gas in the piston chamber of the first piston. The incompressible fluid is released from the first piston, by the controlled fluid valve assembly. The incompressible fluid is alternately delivered to the second piston to drive the second piston and compress gas.

A gas compressor includes an incompressible fluid source for storing an incompressible fluid. A rotary shaft is coupled to the incompressible fluid source. Operation of the rotary shaft draws the incompressible fluid up or down the rotary shaft. A piston chamber is coupled to each piston in a set of pistons. The incompressible fluid is delivered to the first piston by a controlled fluid valve assembly, to drive the first piston. The centripetal force from the rotation of the rotary shaft and the force of incompressible fluid from an impeller drive the first piston to compress a gas in the piston chamber of the first piston. The incompressible fluid is released from the first piston, by the controlled fluid valve assembly. The incompressible fluid is alternately delivered to the second piston to drive the second piston and compress gas.