Natural gas substation system and compressor pressure-regulating grade-skipping energy-saving control method thereof

Abstract

The invention belongs to the technical field of natural gas, which specifically relates to a natural gas substation system and a compressor pressure-regulating grade-skipping energy-saving control method thereof; the natural gas substation system comprises a compressor, a cooler and a control pipeline; the pneumatic ball valve of the control pipeline is controlled through an electromagnetic valve set; different natural gas channels can be connected; thus, natural gas from a natural gas inlet with variable pressure is treated through different compression treatment so as to achieve the pressure demand of charging gas to vehicle; because the method of the prior art for reducing pressure uniformly and boosting the pressure uniformly is changed, the natural gas substation system and a control method obviously play the characteristics of the compressor, and therefore, displacement is increased; simultaneously, relatively low power is kept; and operation is characterized by energy saving and high efficient.

Description

Technical field [0001] The present invention belongs to the technical field of natural gas, and in particular relates to a natural gas substation system arranged at an urban non-natural gas pipeline network, and also relates to a compressor pressure regulation skipping energy-saving control method applied to the natural gas substation. Background technique [0002] When there is no natural gas pipeline network in a city, but a gas station for refueling cars is set up, it is generally solved by the method of substation and parent station. In fact, this includes two structures of parent station and substation. The parent station is a natural gas pressurization station set up near the city gate station or near the main natural gas pipeline. It compresses the natural gas in the pipeline and stores it in the tank of the transfer truck, and then transports it to a place where there is no gas source. The natural gas stored in the tank of the transfer vehicle is used to supply gas to the...

AI Technical Summary

Problems solved by technology

It can be seen from the relationship between the power and displacement of the compressor that when this method is adopted, the compressor always operates at a relatively high power (the highest power is 75KW, at this time 70.1KW), and the displacement is always low (the highest displacement is 2522Nm 3 / h, the displacement at this time is 1588Nm 3 / h), so that the gas filling efficiency of the entire substation is in a low state

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