CN101059203A - Gas-supply method of CNG gas-charging station for automobile - Google Patents
Gas-supply method of CNG gas-charging station for automobile Download PDFInfo
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- CN101059203A CN101059203A CN 200710049226 CN200710049226A CN101059203A CN 101059203 A CN101059203 A CN 101059203A CN 200710049226 CN200710049226 CN 200710049226 CN 200710049226 A CN200710049226 A CN 200710049226A CN 101059203 A CN101059203 A CN 101059203A
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Abstract
The present invention discloses a gas supply method for vehicle CNG gas station (including ordinary, standard, sub-station gas stations) which is supplied gas by the natural gas pipe network or CNG mobile gas supply vehicles one by one. Said CNG mobile gas supply vehicles supply gas for the CNG gas station through gas releasing device; the high pressure gas releasing mouth of said gas releasing device is equipped with two gas releasing channels which supply gas to the high pressure gas storing device and the gas station separately; the medium (low )pressure gas releasing mouth of said gas releasing device is equipped with two gas releasing channels which supply gas for the medium or low pressure gas storing device and the gas station; said gas releasing device is equipped with residual gas releasing channel which is connected with the inlet of CNG gas station compressor technology system and supplies gas for the compressor. The advantages are: the CNG gas station has the function of CNG sub-station gas station at the same time, the CNG mobile gas supply vehicles can supply gas when the pipe network can not supply gas, the gas releasing speed is fast and the gas releasing is exhaustive. The operation is controlled intelligently and the operation is safe and reliable. So the disposition number of the CNG mobile gas supply vehicles is reduce, the CNG gas station technology and equipment resources are used fully and the CNG sub-station costs are reduced.
Description
Technical field
The present invention relates to CNG gas-charging station for automobile, relate in particular to its air supply method.
Background technique
CNG (compressed natural gas) is used as the cleaning vehicle energy and promotes rapidly in China with its cleaning, economic dispatch advantage.To in June, 2005, China develops 140,000 of gas combustion automobiles (dual-fuel automobile that contains repacking) in existing more than 80 city altogether, has built 535 of all kinds of CNG gas-charging station for automobile, occupies the 7th in the world, basically forms CNG aerating network.
Vapour has three kinds with car CNG gas station:
The common gas station of a kind of CNG of being (contain the standard gas station, see process flow diagram 1).This class gas station builds near gas distributing system, by the direct air feed of gas distributing system.Common gas station is subjected to the influence of natural gas resource storage and distribution, and when inadequate resource (gas distributing system pressure is low) or can't air feed the time, common gas station will be because of lacking or not having rock gas, is in to produce half a lifetime or temporarily stop aerating.
Second kind is CNG substation gas station (seeing process flow diagram 2), and the CNG gas of being taken from the female station of CNG gas station by the mobile car of supplying gas of CNG transports the CNG substation to, to its air feed.Thereby it is all unrestricted with quantity to layout, and can make things convenient for user's aerating, is particularly suitable for building the CNG gas station in the area away from gas distributing system.But, existing C NG substation process engineering falls behind, equip simple and crude, the flow car of supplying gas of CNG unloads the process engineering defectiveness of gas to the CNG substation, unloads that gas speed is slow, the time is long, can not unload gas fully, residual air reaches 15～25%, the transport power waste is very big, and the gas supply merchant have to dispose the car of supplying gas in a large number and satisfy the needs of supplying gas, and equipment investment and cost of transportation are all very high.
The third is the female station of a vapour vehicle CNG gas station (seeing process flow diagram 3), and this class gas station build near the natural air-air source place of production or the rock gas main net, by the direct air feed production of rock gas main net.The CNG gas of producing is sent to the substation by the mobile car of supplying gas of CNG, gives refueling by CNG substation gas station.CNG can not directly give refueling in female station, and its major function is the production of CNG gas.
Summary of the invention
The purpose of this invention is to provide a kind of CNG gas-charging station for automobile air supply method, make the common gas station of CNG have CNG substation function simultaneously, lacking rock gas or when gas distributing system can not air feed, by the car air feed of supplying gas that flows; Simultaneously, it is fast to make CNG gas station (having substation gas station function) unload gas speed, can unload gas fully, thereby reduces the configuration quantity of car of supplying gas that flows.
Technical solution of the present invention is:
A kind of air supply method of CNG gas-charging station for automobile, by natural gas pipe network gas supplying, after purifying (pressure regulation, metering), desulfurization, compression, dehydration, send into the high, medium and low voltage caisson respectively in regular turn from the rock gas of gas distributing system, again by the high, medium and low voltage caisson to the filling machine air feed; The common gas station of described vapour vehicle CNG is also by the mobile car air feed of supplying gas of CNG; Described CNG flow supply gas car air supply channel and natural gas pipe network gas supplying passage by " or " the logic setting, select a ground to the common gas station of CNG air feed.
Described CNG flows and supplies gas car by unloading device of air to the CNG gas-charging station for automobile air feed; The described high pressure that unloads device of air unloads gas port to have two and unloads the gas passage, respectively to high-pressure gas device and filling machine air feed; Described unload device of air in (low) press and to unload gas port and have two and unload the gas passage, respectively in or low pressure caisson and filling machine air feed.
The described device of air that unloads has residual air and unloads the gas passage, and this passage is communicated with CNG gas station compressor process system import, to compressor gas supplied.
The described device of air that unloads has the residual air regulator, with the residual air pressure modulation to the specified inlet pressure of compressor process system, again to compressor gas supplied.
A kind of air supply method of CNG gas-charging station for automobile by the CNG car air feed of supplying gas that flows, flows from CNG and to supply gas the rock gas of car by unloading device of air to CNG gas station air feed; The described high pressure that unloads device of air unloads gas port to have two and unloads the gas passage, respectively to high-pressure gas device and filling machine air feed; Described unload device of air in (low) press and to unload gas port and have two and unload the gas passage, respectively in or low pressure caisson and filling machine air feed.
The described device of air that unloads has residual air and unloads the gas passage, and the compressor process system import of this channel connection CNG gas station is to compressor gas supplied.
The described device of air that unloads has the residual air regulator, with the pressure regulation of residual air pressure to the specified inlet pressure of compressor process system, again to compressor gas supplied.
Whole air feed process is controlled automatically by control system, and is safe and reliable.
Useful technique effect of the present invention:
Because CNG gas-charging station for automobile has two air supply channels, has CNG substation function, when lacking natural air-air source or gas distributing system can not air feed the time, can transport the female station of its CNG by the mobile car of supplying gas of CNG and produce CNG gas, to its air feed, thereby guarantee whenever this CNG gas station can both provide the aerating service.
Can unload gas to caisson and filling machine simultaneously owing to unload device of air, gas speed is fast, the time short so unload, and residual air is detachable toward compressor, send into caisson after the pressurization, it is abundant that the car of supplying gas so flow unloads gas, and surplus has seldom increased substantially and transported efficient, the mobile car configuration quantity of supplying gas be can reduce, equipment investment and cost of transportation reduced.
Be that technology before and after the CNG Vehicle Fueling Station is transformed with the present invention, economic indicator compare below:
| Sequence number | Project | Before the transformation | After the transformation | Brief comment | Remarks |
| 1 | The car of supplying gas of flowing unloads gas time hour/car | 4～5 | 1.5 | Shorten and unload the gas time about 70% | |
| 2 | The car utilization ratio % that supplies gas flows | 3 times/days | 9 times/days | The mobile car utilization ratio of supplying gas improves 2 times | Under identical haul distance, compare |
| 3 | Investment for trnasforming urban land | 100％ | 30％ | Reduce investment 70% | The transformation of traditional C NG normal station also need be built distribution, building etc. |
| 4 | The utilization of resources of the common gas station of CNG | Do not have | Make full use of | The technology of the present invention advanced person | |
| 5 | CNG pressure can utilize | Do not have | Utilize 60% | The technology of the present invention advanced person | |
| 6 | The substation cost of production | 100％ | 40％ | Reduce production costs 60% | Relatively |
Description of drawings
Fig. 1 is the existing common aerating air feed craft of vapour vehicle CNG general flow chart;
Fig. 2 is an existing vapour vehicle CNG substation gas station air feed craft general flow chart;
Fig. 3 is the female station of an existing vapour vehicle CNG gas station air feed craft general flow chart;
Fig. 4 is that the present invention is used for the improved air feed craft general flow chart of the common gas station of vapour vehicle CNG;
Fig. 5 is a vapour vehicle CNG of the present invention substation gas station air feed craft general flow chart.
Embodiment
Embodiment one
Referring to Fig. 4, the present invention is used for the process flow diagram that has CNG substation gas station function simultaneously after the transformation of the common gas station of vapour vehicle CNG.It has two air supply channels, and one is communicated with gas distributing system, by gas distributing system to the common gas station of vapour vehicle CNG air feed; Another is communicated with the CNG car of supplying gas that flows, two air supply channels by " or " the logic setting, select a ground to the common gas station of CNG air feed.Usually by natural gas pipe network gas supplying, when raw natural gas lacks (gas distributing system pressure is low) or gas distributing system can not air feed the time, then transport the rock gas of taking from the female station of CNG by the mobile car of supplying gas of CNG, to common gas station air feed, thereby guarantee whenever this common gas station can both provide the aerating service.
Technological process by natural gas pipe network gas supplying is: from the rock gas of gas distributing system, after purifying (pressure regulation, metering), desulfurization, compression, dehydration, send into the high, medium and low voltage gas storage and store, again by the high, medium and low voltage gas storage to the filling machine air feed.Above-mentioned pressure regulation step is that the imported raw material gas pressure is transferred to 0.4MPa, makes it consistent with the specified inlet pressure of compressor process system.The high, medium and low voltage gas storage is sent in the rock gas compression of above-mentioned compression step after with desulfurization then.When low pressure gas storage internal pressure rose to 25.0MPa, the air intake valve in high-pressure gas storehouse was closed automatically, and compressor works on.When the pressure in the central pressure gas storage rose to 16.0MPa, the air intake valve of middle pressure gas storage was closed automatically, and compressor still works on.When the pressure in the low pressure gas storage rose to 8.0～12.0MPa, the air intake valve of low pressure gas storage was closed automatically, the compressor autostop.
Technological process by the mobile car air feed of supplying gas of CNG is: the mobile car of supplying gas to pressure≤20.0MPa, is transported to the common gas station of CNG in the female station aerating of CNG, unloads device of air (separate case is applied for a patent) to CNG gas station air feed by CNG.The high pressure that unloads device of air unloads gas port has two to unload the gas passage, and one is communicated with the high-pressure gas storehouse, and another is communicated with filling machine.When not having refueling, high pressure unloads gas port and only unloads gas to high-pressure gas storage well, and when refueling, high pressure unloads gas port and unloads gas to high-pressure gas storehouse, filling machine simultaneously, so just can add quick-release gas speed, shortens and unloads the gas time.When high-pressure gas storehouse pressure with flow when supplying gas the car pressure balance, high pressure unloads air valve and closes automatically, finishes high pressure and unloads the gas task.Flow and to supply gas car after high pressure unloads gas, in the car actual pressure may reduce to middle pressure (12.0～16.0MPa), also may reduce to low pressure (≤8.0MPa), this is by unloading the actual pressure decision in the high-pressure gas storehouse before the gas.If it is very low to unload before the gas pressure in the high-pressure gas storehouse, then unload large-mindedly, pressure balance point is at low pressure range, on the contrary pressure balance point is in middle pressure scope.
Unload device of air in (low) press and to unload gas port and also have two to unload the gas passage, (low) presses gas storage in the connection, another is communicated with filling machine.When not having refueling, in (low) press unload gas port only in (or low) press gas storage to unload gas; When refueling, in (low) press unload gas port simultaneously in (or low) press gas storage, filling machine to unload gas, like this, also can add quick-release gas speed, shorten and unload the gas time.In the middle of (or low) press gas storage pressure and flow when supplying gas the car pressure balance, (low) presses the gas task of unloading in finishing, in (low) press and unload gas control valve and close automatically.
By high, in (or low) press and unload gas, the tolerance of supplying gas in the car that flows is shed 60%, pressure is reduced to 8.0MPa.
The remaining residual air of gas storage of the mobile car of supplying gas of CNG is then unloaded the gas passage by residual air and the residual air regulator is realized.Residual air is unloaded the compressor process system import of the common gas station of gas channel connection CNG.The residual air regulator transfers to 0.4MPa with the residual air of 8.0MPa, makes the specified inlet pressure of itself and compressor consistent, again by compressor compresses, sends into CNG gas station gas storage well and stores.Like this, the rock gas in the mobile car of supplying gas can unload only substantially, and residual air seldom.
Whole air feed process can be unloaded the automatic control system that device of air (applying for a patent with above-mentioned separate case) is provided with by CNG and be finished, and this control system comprises controller (can adopt PC, PLC etc.), pressure transducer, display device, operation keyboard.
Embodiment two
Referring to Fig. 5, the present invention is used for vapour vehicle CNG substation gas station, by the car air feed of supplying gas that flows.The mobile car air feed craft flow process of supplying gas of CNG is identical among its workflow and the embodiment one, so repeat no more.
Claims (9)
1. the air supply method of a CNG gas-charging station for automobile, by natural gas pipe network gas supplying, rock gas from gas distributing system is sent into the high, medium and low voltage caisson in regular turn respectively after purification, desulfurization, compression, dehydration, again by the high, medium and low voltage caisson to the filling machine air feed; It is characterized in that: described CNG gas-charging station for automobile is also by the mobile car air feed of supplying gas of CNG; Described CNG flow supply gas car air supply channel and natural gas pipe network gas supplying passage by " or " the logic setting, select a ground to CNG gas station air feed.
2. according to the air supply method of the described CNG gas-charging station for automobile of claim 1, it is characterized in that: described CNG flows and supplies gas car by unloading device of air to CNG gas station air feed, the described high pressure that unloads device of air unloads gas port to have two and unloads the gas passage, respectively to high-pressure gas device and filling machine air feed; Described unload device of air in (low) press and to unload gas port and have two and unload the gas passage, respectively in or low pressure caisson and filling machine air feed.
3. according to the air supply method of the described CNG gas-charging station for automobile of claim 2, it is characterized in that: the described device of air that unloads also has residual air and unloads the gas passage, and the compressor process system import of this channel connection CNG gas station is to compressor gas supplied.
4. according to the air supply method of the described CNG gas-charging station for automobile of claim 3, it is characterized in that: the described device of air that unloads has the residual air regulator, residual air pressure is transferred to the specified inlet pressure of compressor process system after, again to compressor gas supplied.
5. according to the air supply method of each described CNG gas-charging station for automobile of claim 1～4, it is characterized in that: the air feed process is by automatic controlling system.
6. the air supply method of a CNG gas-charging station for automobile, by the mobile car air feed of supplying gas of CNG, flow from CNG and to supply gas the CNG gas of car by unloading device of air to CNG gas station air feed, it is characterized in that: the described high pressure that unloads device of air unloads gas port to have two and unloads the gas passage, respectively to high-pressure gas device and filling machine air feed; Described unload device of air in (low) press and to unload gas port and have two and unload the gas passage, respectively in or low pressure caisson and filling machine air feed.
7. according to the air supply method of the described CNG gas-charging station for automobile of claim 6, it is characterized in that: the described device of air that unloads also has residual air and unloads the gas passage, and the compressor process system import of this channel connection CNG gas station is to compressor gas supplied.
8. according to the air supply method of the described CNG gas-charging station for automobile of claim 7, it is characterized in that: the described device of air that unloads has the residual air regulator, residual air pressure is transferred to the specified inlet pressure of compressor process system after, again to compressor gas supplied.
9. according to the air supply method of each described CNG gas-charging station for automobile of claim 6～8, it is characterized in that: the air feed process is by automatic controlling system.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN 200710049226 CN101059203A (en) | 2007-05-30 | 2007-05-30 | Gas-supply method of CNG gas-charging station for automobile |
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| CN 200710049226 CN101059203A (en) | 2007-05-30 | 2007-05-30 | Gas-supply method of CNG gas-charging station for automobile |
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| CN 200710049226 Pending CN101059203A (en) | 2007-05-30 | 2007-05-30 | Gas-supply method of CNG gas-charging station for automobile |
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Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2010111888A1 (en) * | 2009-03-31 | 2010-10-07 | Shen Jun | Gas filling machine and gas filling station composed thereof |
| CN101446382B (en) * | 2007-11-28 | 2013-06-19 | 上海创洁科技有限公司 | Special gas supply and distribution device |
| CN103234113A (en) * | 2013-04-23 | 2013-08-07 | 贵州大学 | Compressed natural gas and compressed natural gas doped coke oven gas combined refueling station |
| CN103256477A (en) * | 2013-04-22 | 2013-08-21 | 张志卓 | Method for filling prying vehicles by three-level pressure of natural gas primary stations |
| CN103277664A (en) * | 2013-06-17 | 2013-09-04 | 贵州大学 | CNG (compressed natural gas) and CNG-COG (coke oven gas) refilling method and device for |
| CN103883873A (en) * | 2014-04-10 | 2014-06-25 | 安徽省鸿申压缩机有限公司 | Skid-mounted compressed natural gas automobile air-entrapping device |
| CN104456067A (en) * | 2014-12-15 | 2015-03-25 | 清华大学 | Mixed gas filling device and mixed gas filling method of CNG and HCNG |
| CN104534271A (en) * | 2014-12-15 | 2015-04-22 | 清华大学 | CNG and HCNG mixing and refilling device and method |
| CN104981646A (en) * | 2012-08-24 | 2015-10-14 | 奥斯康普控股公司 | Virtual gaseous fuel pipeline |
| CN105156879A (en) * | 2015-07-29 | 2015-12-16 | 定远县瑞安天然气技术服务有限公司 | Method for rebuilding compressed natural gas (CNG) secondary gas filling station into CNG standard gas filling station |
| CN109140231A (en) * | 2018-09-20 | 2019-01-04 | 四川原力工程设计有限公司 | A kind of energy-saving compressed natural gas substation device system |
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2007
- 2007-05-30 CN CN 200710049226 patent/CN101059203A/en active Pending
Cited By (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101446382B (en) * | 2007-11-28 | 2013-06-19 | 上海创洁科技有限公司 | Special gas supply and distribution device |
| WO2010111888A1 (en) * | 2009-03-31 | 2010-10-07 | Shen Jun | Gas filling machine and gas filling station composed thereof |
| CN104981646A (en) * | 2012-08-24 | 2015-10-14 | 奥斯康普控股公司 | Virtual gaseous fuel pipeline |
| US9863581B2 (en) | 2012-08-24 | 2018-01-09 | Nearshore Natural Gas, Llc | Virtual gaseous fuel pipeline |
| CN103256477B (en) * | 2013-04-22 | 2015-11-04 | 张志卓 | Rock gas mother station three stage pressure fills the method for sled car |
| CN103256477A (en) * | 2013-04-22 | 2013-08-21 | 张志卓 | Method for filling prying vehicles by three-level pressure of natural gas primary stations |
| CN103234113A (en) * | 2013-04-23 | 2013-08-07 | 贵州大学 | Compressed natural gas and compressed natural gas doped coke oven gas combined refueling station |
| CN103277664A (en) * | 2013-06-17 | 2013-09-04 | 贵州大学 | CNG (compressed natural gas) and CNG-COG (coke oven gas) refilling method and device for |
| CN103883873A (en) * | 2014-04-10 | 2014-06-25 | 安徽省鸿申压缩机有限公司 | Skid-mounted compressed natural gas automobile air-entrapping device |
| CN103883873B (en) * | 2014-04-10 | 2015-12-09 | 安徽省鸿申压缩机有限公司 | Skid-mounted compressed natural gas filling device for automobile |
| CN104456067A (en) * | 2014-12-15 | 2015-03-25 | 清华大学 | Mixed gas filling device and mixed gas filling method of CNG and HCNG |
| CN104534271A (en) * | 2014-12-15 | 2015-04-22 | 清华大学 | CNG and HCNG mixing and refilling device and method |
| CN104534271B (en) * | 2014-12-15 | 2016-05-18 | 清华大学 | Mixing aerator and the aerating method of a kind of CNG and HCNG |
| CN105156879A (en) * | 2015-07-29 | 2015-12-16 | 定远县瑞安天然气技术服务有限公司 | Method for rebuilding compressed natural gas (CNG) secondary gas filling station into CNG standard gas filling station |
| CN109140231A (en) * | 2018-09-20 | 2019-01-04 | 四川原力工程设计有限公司 | A kind of energy-saving compressed natural gas substation device system |
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Open date: 20071024 |