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Energy-saving natural gas supply sub-station system

A technology for filling sub-stations and natural gas, which is applied in gas/liquid distribution and storage, equipment loaded into pressure vessels, and methods of vessel discharge, etc., to achieve the effects of improving utilization, reducing losses, and reducing power.

Active Publication Date: 2010-07-28
重庆耐德能源装备集成有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The main problems of this traditional substation gas supply method are: 1. Compressor pressurization is a necessary procedure for gas supply and gas storage. The compressor is often in use and has a long working time, so it needs to be equipped with a larger power 2. The compressor discharges a lot of pollutants, and the loss of natural gas is also large. The compressor works for a long time and has a short life; 3. The gas filling machine is used to directly take gas from the trailer bottle The gas storage rate is low, and the volume of wells for station gas storage installation is large, so the volume of station gas storage installation wells is large. Generally, it is necessary to build multiple station gas storage installation wells, resulting in high station construction costs.

Method used

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  • Energy-saving natural gas supply sub-station system

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] Embodiment one: if figure 2 As shown, the present embodiment is mainly composed of trailer bottle group 1, compressor 2, station gas storage device 3, gas filling machine 4, direct pipeline 5, first shut-off valve 6, first pressure sensor 7, first one-way Valve 8, second shut-off valve 9, third shut-off valve 10, second check valve 11, third check valve 12, fourth shut-off valve 13, gas storage branch 14, fifth shut-off valve 15, fourth check valve It consists of a directional valve 16, a backup gas delivery pipeline 17, a second pressure sensor 18, a fifth one-way valve 19, a sixth shut-off valve 20, a control system 21, a manual valve 22 and a pressure gauge 23. Wherein the trailer bottle group 1 is to divide 8 trailer bottles on the trailer into 3 groups, and each trailer bottle group 1 is connected to the gas filling gun of the gas filling machine 4 after passing through 5 branches of independent direct pipelines respectively. Such as figure 2 As shown, there ar...

Embodiment 2

[0029]Embodiment 2: This embodiment mainly consists of trailer bottle group 1, compressor 2, station gas storage device 3, gas dispenser 4, direct pipeline 5, first shut-off valve 6, first pressure sensor 7, first unit Directional valve 8, second shut-off valve 9, third shut-off valve 10, second one-way valve 11, third one-way valve 12, fourth shut-off valve 13, gas storage branch 14, fifth shut-off valve 15, fourth One-way valve 16, backup gas delivery pipeline 17, second pressure sensor 18, fifth one-way valve 19, sixth cut-off valve 20, control system 21, manual valve 22 and pressure gauge 23. The components and connections of this embodiment are basically the same as those in Embodiment 1. The difference is that the 12 trailer bottles on the trailer are divided into 4 groups in the trailer bottle group 1, and each trailer bottle group 1 passes through independent The 5 branch roads of the straight pipeline are connected with the gas filling gun of the gas filling machine 4...

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Abstract

The invention discloses an energy-saving natural gas filling sub-station system. Trailer cylinders are divided into a plurality of groups, each group of the trailer cylinders run through an independent straight pipeline branch and is connected with a gas filling hose of a gas dispenser, a booster loop with a compressor is parallel connected between a first pressure sensor and a branch node on thestraight pipeline, a gas storage branch is connected with an outlet of the compressor of the booster loop, the gas storage branch is connected with a spare gas transmission pipeline which is connected with the gas filling hose of the gas dispenser by the branch; the pipeline is equipped with a pressure sensor and a shut-off valve which are connected with a control system, the control system preferably selects a pipeline with lower pressure for filling gas to a charged container according to the pressure of all groups of the trailer cylinders and station gas storage devices. The system enhances utilization ratio of the gas in the trailers, reduces utilization amount of the gas in the station gas storage device, reduces work quantity of the compressor, reduces power consumption and reduces capacity of the station gas storage devices, thus reducing station construction cost and operation cost.

Description

technical field [0001] The invention relates to a compressed natural gas refueling system, in particular to a low-energy, low-cost compressed natural gas refueling substation system. Background technique [0002] The natural gas refueling station is a place where compressed natural gas (CNG) is used to provide fuel to natural gas vehicles (NGV) and large CNG sub-station vehicles, and the natural gas refueling sub-station is built in a place where there is no natural gas pipeline around the gas filling station. The natural gas transported from the parent station by station running vehicles is used to refuel natural gas vehicles. Compressed natural gas refueling sub-station system is generally equipped with a number of trailer bottles, compressors, station gas storage devices, gas dispensers and other equipment installed in a trailer. Connect the gas storage device to the gas dispenser. The traditional natural gas refueling sub-station system flow is as follows: figure 1 ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F17C5/06F17C13/00F17C13/04
Inventor 胡术生任兴平袁利波高孟
Owner 重庆耐德能源装备集成有限公司