How natural gas compressors work

2019-11-08

Natural gas compressor operating principle When the compressor is running, the motor drives the crankshaft to rotate, and the piston reciprocates through the connecting rod. The crankshaft rotates once, the piston reciprocates once, and the processes of suction, contraction, and exhaust are realized in the cylinder one after the other, which completes a working cycle.
(1) Inhalation process When the piston moves to the left, the working volume in the cylinder gradually increases and the pressure gradually decreases. When the pressure drops slightly below the pressure in the intake pipe, the gas in the intake pipe opens the suction valve and enters the cylinder until the piston reaches the left position (also known as the inner dead point), the working volume is large, and the opening of the suction valve is closed .
(2) Tightening process When the piston moves to the right, the working volume in the cylinder decreases, and the gas pressure gradually increases. Because the suction valve has a check function, the gas in the cylinder cannot flow back into the intake pipe. In addition, because the gas pressure in the exhaust pipe is higher than the pressure inside the cylinder, the gas in the cylinder cannot flow out from the exhaust valve, and the gas in the exhaust pipe cannot enter the cylinder due to the check valve's non-return effect. . At this moment, the amount of gas in the cylinder persists, and as the piston moves to the right, the gas pressure keeps rising.
(3) Exhaust process When the piston moves to the right to a certain position, the gas pressure in the cylinder rises slightly higher than the gas pressure in the exhaust pipe, and the gas opens the exhaust valve into the exhaust pipe until the piston moves The right bearing (also called outer dead center) stops. The exhaust valve is closed and the piston moves to the left again. The above process is repeated.
Natural gas compressors are different from ordinary compressors. Natural gas compressors are different from ordinary compressors. Natural gas compressors are mainly compressed natural gas (including its content, methane, propane, etc.) with relatively high pressure and high danger levels. Ordinary compressors mainly compress air, have a single medium, and have a low pressure.

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