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Natural gas compressor and system for CNG gas-adding station with arbitrary variable intake pressure

A compressor system, the technology of inlet pressure, applied in the equipment of the pressure vessel, liquid variable capacity machinery, gas/liquid distribution and storage, etc. Difficulty in stabilizing gas supply and power consumption to achieve the effect of reducing power consumption

Active Publication Date: 2009-02-25
ZHEJIANG QIANGSHENG COMPRESSOR MFG
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AI Technical Summary

Problems solved by technology

Some gas station compressor manufacturers use an average pressure value to design the compressor. When the pressure exceeds the average value, they use throttling methods to reduce the pressure, which will waste useful energy; when the pressure is lower than the average value, The compressor can run, but the air supply will be reduced
As a result, users of gas filling stations always feel dissatisfied
In addition, it is also difficult to determine the stable gas supply and power consumption when designing gas filling stations

Method used

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  • Natural gas compressor and system for CNG gas-adding station with arbitrary variable intake pressure
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  • Natural gas compressor and system for CNG gas-adding station with arbitrary variable intake pressure

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Embodiment Construction

[0018] Referring to Fig. 1, Fig. 1 is a series of spectrograms of the present invention. The gas station compressor is a series of products, and there are three counter-moving bases, and the corresponding piston forces are 6 to 8 tons, 9 to 12 tons, and 13 tons. ~16 tons, the compressor cylinder structure includes a double-acting medium-pressure cylinder; a low-medium pressure inverted differential cylinder; and an inverted differential high-pressure cylinder. Each compressor is based on the motor power, and each power motor can adapt to various intake pressures and various air supply volumes. According to the type spectrogram, the working stages of the compressor are determined according to the inlet pressure range. When the natural gas pressure in the pipeline is 0.15MPa-0.7MPa, the compressor adopts four-stage compression; when the natural gas pressure in the pipeline is 0.8MPa-2.5MPa, The compressor adopts three-stage compression; when the natural gas pressure in the pipel...

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Abstract

The invention relates to a compressor system for a CNG fueling station used for the arbitrary change of the pressure of a natural gas pipe network, which can ensure that the pressure in an air intake pipeline of the natural gas fueling station is arbitrarily changed, the gas supply is stable, and a motor is not overloaded, and serves the function of energy conservation; in addition, a conventional station is compatible with a sub station, so as to solve the problem of insufficient gas supply in winter and summer. The invention adopts the technical proposal that the number of operation stages of a compressor is controlled according to type spectrograms; when the natural gas pressure in the pipeline is 0.15 MPa to 0.7 MPa, the compressor adopts four-stage compression; when the natural gas pressure in the pipeline is 0.8 MPa to 2.5 MPa, the compressor adopts three-stage compression; when the natural gas pressure in the pipeline is 2.5 MPa to 6.5 MPa, the compressor adopts two-stage compression; and when the pressure in the pipeline is larger than 6.5 MPa, the compressor adopts one-stage compression.

Description

1. Technical field: [0001] The present invention relates to a compressor system and series, in particular to a natural gas compressor and system for a CNG refueling station that can be used for arbitrary changes in inlet pressure, which is suitable for parent stations, conventional stations, and conventional stations-substations compatible CNG filling station. 2. Background technology: [0002] Most of the compressed natural gas—CNG—used by natural gas vehicles is supplied by CNG filling stations. The pressure of the natural gas from the pipeline varies from place to place and from time to time before entering the compressor, and they may vary between 0.15MPa and 7MPa. The pressure near the main road is 3MPa~7MPa; the pressure inside the main road in front of the city gate station is 0.8MPa~3.0MPa; the pressure in the urban pipe network is 0.15MPa~0.6MPa. For example, the pressure in a main road in Xi'an is 3.0MPa in winter and 1.1MPa in summer; another example is that the...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F04B41/00F17C5/00
Inventor 郁永章冯学强郭良盛
Owner ZHEJIANG QIANGSHENG COMPRESSOR MFG
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