CN105987275A - Natural gas filling method - Google Patents
Natural gas filling method Download PDFInfo
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- CN105987275A CN105987275A CN201510058308.6A CN201510058308A CN105987275A CN 105987275 A CN105987275 A CN 105987275A CN 201510058308 A CN201510058308 A CN 201510058308A CN 105987275 A CN105987275 A CN 105987275A
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- natural gas
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Abstract
The invention provides a natural gas filling method. The natural gas filling method comprises the step of carrying out cooling treatment on natural gas through a cooling device before filling a vehicle-mounted gas cylinder with natural gas, the cooling treatment range of the natural gas temperature is 0 DEG C to 40 DEG C lower than the environment temperature. According to the natural gas filling method, through reduction of the natural gas temperature before filling, the effective volume utilization ratio of the vehicle-mounted gas cylinder is increased, the vehicle travel mileage is increased, the filling times are reduced, the deadhead kilometres and time for a gas station roundtrip are reduced, the excessive power consumption during pressure compensation pressurization of a compressor is reduced, and the beneficial effects of saving energy and increasing economic benefits are achieved.
Description
Technical field
The invention belongs to the technical field of natural gas charging method, be specifically related to a kind of natural gas charging method.
Background technology
CNG i.e. compressed natural gas (Compressed Natural Gas is called for short CNG) is that natural gas pressurizes also
Store in a reservoir with gaseous state.Compressed natural gas except can with in addition to the natural gas in oil field and gas field,
Can also manually manufacture biogas (main component is methane).CNG can use as motor vehicle fuel.It is one
Planting preferable automobile-used alternative energy source, its application technology reaches its maturity through many decades development.There is low cost,
High efficiency, pollution-free, use the features such as safe and convenient, the most day by day demonstrate powerful development potentiality.
CNG gas station refers to provide fuel with compressed natural gas form to gas-fueled vehicles and large-scale CNG substation car
Place.At present both at home and abroad natural gas filling station fill technological process include successively normal temperature high voltage, pressure compensation,
Quickly filling (high flow rate), natural gas via pipeline or skid gas cylinder group deliver to gas station, then carry through pipeline,
After compressor is pressurized to 20mp, be dehydrated oil removing, process higher than 15 DEG C of coolings of ambient temperature, deliver to gas storage well or
Filling machine measures, and is finally filled into vehicle-mounted gas bomb.The gas filling quality index that gas station uses at present has:
Charge pressure is 20 DEG C of 20MP (national security regulation is enforced)；Gas moisture content is-40 DEG C of dew point temperatures
(national regulation)；Fill gas temperature and must not be higher than ambient temperature more than 15 DEG C (compressor factory index)；
Gas filling flow velocity is to cannot be less than 0.25m during trickle charge3/ min, cannot be greater than 8m3/ min, uses at present
Methods for filling flow velocity reaches 7.5m3/min。
The most general methods for filling, during aerating, compressor temperature is higher than ambient temperature 15 DEG C, and filling machine is quick
When filling, flow velocity is excessive makes gas enter Fast Compression process generation mass air flow friction life again in gas cylinder
Heat, therefore the gas temperature in gas cylinder after having filled in bottle gas temperature exceed ambient temperature 25 DEG C extremely
40 DEG C, in gas cylinder, gas temperature gradually reaches balance with ambient temperature afterwards, after internal and external temperature balance, and gas cylinder
Interior gas pressure the most therewith from 50 DEG C, 20MPa drop to 15 DEG C, 14MPa, and standard charge pressure should reach
15 DEG C, 17.8MP, the actual natural gas that fills decreases by 27%.Therefore there is effective appearance of mounted gas cylinder
The problem that long-pending utilization rate is low.
Summary of the invention
For the deficiencies in the prior art, it is an object of the invention to provide a kind of natural gas charging method, pass through
Reduce natural gas temperature before filling, improve the dischargeable capacity utilization rate of mounted gas cylinder, make vehicle increase in traveling
Journey, reduces and fills number of times, reduces excessive power when compressor pressure compensates pressurization and consumes, thus reaches energy-conservation
With the beneficial effect increasing economic benefit.
For achieving the above object, the technical solution adopted in the present invention is:
A kind of natural gas charging method, including passing through chiller pair before natural gas charging to mounted gas cylinder
Natural gas carries out cooling process, and the cooling process range of natural gas temperature is less than ambient temperature 40 DEG C to 0 DEG C
Between.
Preferably, described chiller includes that cooler, described cooler are 1:20～30 big L/D ratio list rifles
The cooling combined cooler of coil pipe.
Preferably, described chiller also includes refrigeration machine and circulating pump.
Preferably, described cooling processing procedure includes monitoring natural gas temperature in real time, and to operating mode
Temperature is monitored in real time.
Preferably, described method includes that the natural gas temperature that cooling is filled in mounted gas cylinder after processing is
-10 DEG C～40 DEG C.
Preferably, described method carries out temperature setting to chiller, to cold in being included in cooling processing procedure
But temperature is automatically adjusted.
The present invention provide natural gas charging method be traditional method use room temperature, high pressure, pressure compensation,
The technological process of temperature-compensating is increased, by natural to be filled in mounted gas cylinder on the basis of quickly filling
Gas carries out cooling process before filling, the temperature raised because of frictional heat when counteracting natural gas charging air inlet bottle,
Improving the space availability ratio of mounted gas cylinder, relatively prior art increases by 27%, and then makes vehicle increase distance travelled,
Reduce and fill number of times, and reduce deadhead kilometres and the time of round gas station, reduce compressor pressure and compensate
During pressurization, excessive power consumes, thus reaches beneficial effect that is energy-conservation and that increase economic benefit.
Accompanying drawing explanation
Fig. 1 is the flow chart of embodiment of the present invention natural gas charging method.
Detailed description of the invention
Below in conjunction with accompanying drawing, technical scheme is further described.
Embodiment 1
As it is shown in figure 1, a kind of natural gas charging method,
(1) natural gas via pipeline or skid gas cylinder group deliver to gas station；
(2) natural gas via pipeline enters compressor, is pressurized to the charge pressure of 20Mpa；
(3) carry out natural gas being dehydrated oil removal treatment；
(4) natural gas being carried out cooling process, after cooling, natural gas temperature is not higher than ambient temperature 15 DEG C, i.e.
TNatural gas≤TEnvironment+ 15 DEG C, wherein TNatural gasFor natural gas temperature, T after coolingEnvironmentFor ambient temperature；
(5) natural gas is delivered to gas storage well or filling machine, metering；
(6) natural gas is filled in mounted gas cylinder after carrying out cooling process by chiller, and cooling processed
Journey makes natural gas temperature scope between arriving less than ambient temperature 0 DEG C less than ambient temperature 40 DEG C, i.e. cools down energy
Power is in the range of 0～40 DEG C reducing temperature.When being 30 DEG C such as ambient temperature, cooling processing procedure is by sky
So temperature is reduced to-10 DEG C～0 DEG C, then reducing temperature range is 30～40 DEG C；If ambient temperature is 20 DEG C
Time, cooling processing procedure natural gas temperature is reduced to-10 DEG C～10 DEG C, then reduce temperature range be 10～
30℃；If ambient temperature is 10 DEG C, natural gas temperature is reduced to-10 DEG C～10 DEG C by cooling processing procedure,
Then reducing temperature range is 0～20 DEG C；Preferably, the natural gas temperature being filled in mounted gas cylinder at-10 DEG C～
In the range of 40 DEG C；The natural gas temperature being further preferably filled in mounted gas cylinder is-10 DEG C～15 DEG C of scopes
In.
It is filled into before the natural gas charging of mounted gas cylinder after above-mentioned steps (6) cooling processes so that vehicle-mounted gas
Natural gas temperature in Ping maintain with the ambient temperature temperature difference 5 DEG C within, i.e. TEnvironment± 5 DEG C, wherein TIn bottleFor car
Temperature in carrier gas bottle；Preferably by accurate for the natural gas temperature in mounted gas cylinder control accuracy with ambient temperature temperature
Within differing from 1 DEG C, i.e. TEnvironment±1℃。
Chiller described in the present embodiment includes cooler, and described cooler is empty for being arranged on filling machine upper strata
Between 1:20～the 30 big L/D ratio list cooling combined coolers of rifle coil pipe, i.e. cooler internal be a plurality of single rifle
Coil pipe is combined, and the diameter of described single rifle coil pipe and length are than for 1:20～30, and the present invention uses cooling
The cooling effect of device is more preferable, cooling effectiveness is high, low cost.Described in the inventive method, chiller also includes
Refrigeration machine and circulating pump, cooler and the equipment such as refrigeration machine, circulating pump form the synchronous operation of a set of refrigeration system.
The present embodiment step (6) carries out real-time temperature monitoring to natural gas in cooling processing procedure, examines simultaneously
Survey ambient temperature, according to the natural gas temperature monitored and ambient temperature, and in advance cooling system is arranged
Temperature range, and then make cooler automatically adjust chilling temperature so that in natural gas charging to mounted gas cylinder
Temperatures approach is in ambient temperature.Also include working temperature is carried out real-time temperature monitoring, improve cooling and process
The precision that process temperature controls.
Method described in the present embodiment is effectively increased the space availability ratio of mounted gas cylinder, is described as follows:
The water capacity being located at gas cylinder is 75L, is filled into the pressure of 20Mpa and can recognize within the 2min time
Gas initial equilibrium state is carried out with compressor caisson unrelated for the temperature rise of compression process gas state at end.If ambient temperature
Be 15 DEG C of gauge pressures be 0mp, aeration quantity is 0m3；Gas temperature 50 DEG C in whole state bottle, gauge pressure is 20Mpa,
Now application state equation P V=mRT, obtaining aeration quantity is 17.1m3.Through a period of time, temperature in final bottle
Tending to balance with ambient temperature (15 DEG C), in bottle, gauge pressure is 14Mpa, and aeration quantity is still 17.1m3(come from
" natural gas transmission and distribution technology ", tight inscription minister in ancient times etc., Chemical Industry Press, page 234).As shown in table 1 below
The country's permanent gas the highest charge pressure standard at a temperature of difference fills, under the conditions of methane gas 15 DEG C
High charge pressure should be 17.8Mpa and (comes from " gas filling safe practice ", the Yellow River water conservancy publishing house, Zhang Jian
Newly, page 89), according to reduced state principle (coming from " natural gas transmission and distribution technology ", page 5),
Pr=P/Pc
Tr=T/Tc
ρ r=ρ/ρ c
Quality of natural gas under 15 DEG C, natural gas volume under 14MPa and 50 DEG C, 20MPa is equal, pressure
Difference in change is: 17.8Mpa-14Mpa=3.8Mpa, and under per unit pressure, gas volume is 17.1m3
/ 14MPa=1.2214m3/ MPa, then can fill gas volume under this pressure differential is 3.8Mpa × 1.2214m3
=4.64m3, so it can thus be appreciated that the application present invention can increase natural gas under these conditions at methods for filling
Filling volume is 4.64m3, i.e. improve gas cylinder effective gas 4.64m3/17.1m3=27%.The present invention tests
Property fills data and is also consistent with above-mentioned calculating.
The table 1 country permanent gas the highest charge pressure standard (summary) at a temperature of difference fills
Elaborate a lot of detail in the above description so that fully understanding the present invention.But more than retouch
Stating is only presently preferred embodiments of the present invention, and the present invention can be to be much different from other side described here
Formula is implemented, and therefore the present invention is not limited by disclosed above being embodied as.The most any it is familiar with this area
Technical staff, without departing under technical solution of the present invention ambit, may utilize method and the skill of the disclosure above
Technical solution of the present invention is made many possible variations and modification by art content, or be revised as equivalent variations etc.
Effect embodiment.Every content without departing from technical solution of the present invention, according to the present invention technical spirit to more than
Any simple modification, equivalent variations and the modification that embodiment is done, all still falls within technical solution of the present invention protection
In the range of.
Claims (6)
1. a natural gas charging method, it is characterised in that described method includes natural gas charging to mounted gas cylinder
By chiller, natural gas being carried out cooling process, the cooling process range of natural gas temperature is being less than before
Between ambient temperature 40 DEG C to 0 DEG C.
Natural gas charging method the most according to claim 1, it is characterised in that described chiller includes cold
But device, described cooler is 1:20～the 30 big L/D ratio list cooling combined coolers of rifle coil pipe.
Natural gas charging method the most according to claim 2, it is characterised in that described chiller also includes
Refrigeration machine and circulating pump.
Natural gas charging method the most according to claim 1, it is characterised in that described cooling processing procedure bag
Include and natural gas temperature is monitored in real time, and working temperature is monitored in real time.
Natural gas charging method the most according to claim 1, it is characterised in that described method includes at cooling
The natural gas temperature being filled in mounted gas cylinder after reason is-10 DEG C～40 DEG C.
6. according to the arbitrary described natural gas charging method of claim 1-5, it is characterised in that described method includes
In cooling processing procedure, chiller is carried out temperature setting, chilling temperature is automatically adjusted.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510058308.6A CN105987275A (en) | 2015-02-04 | 2015-02-04 | Natural gas filling method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510058308.6A CN105987275A (en) | 2015-02-04 | 2015-02-04 | Natural gas filling method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105987275A true CN105987275A (en) | 2016-10-05 |
Family
ID=57037376
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510058308.6A Pending CN105987275A (en) | 2015-02-04 | 2015-02-04 | Natural gas filling method |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107559583A (en) * | 2017-10-30 | 2018-01-09 | 江林言 | Gas station constant temperature level pressure fast quantification fills control technique and system |
| CN109458549A (en) * | 2018-12-27 | 2019-03-12 | 浙江海畅气体有限公司 | A kind of bomb charging system temperature control equipment |
| CN112213220A (en) * | 2020-09-27 | 2021-01-12 | 西南石油大学 | Device and method for measuring erosion and friction coefficient of sand-containing hydrate slurry to pipeline |
| CN113432036A (en) * | 2021-08-11 | 2021-09-24 | 四川中亚吉特燃气设备有限公司 | Adsorption type natural gas filling device |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202165181U (en) * | 2011-04-29 | 2012-03-14 | 北京普发兴业动力科技发展有限责任公司 | Compression system of natural gas |
| CN202580605U (en) * | 2012-03-30 | 2012-12-05 | 蚌埠高科能源装备有限公司 | Natural gas integral skip-mounted type gas-entrapping system |
| CN202691587U (en) * | 2012-05-24 | 2013-01-23 | 北京普发兴业动力科技发展有限责任公司 | Compressed natural gas filling station |
| CN103244825A (en) * | 2012-02-13 | 2013-08-14 | 北京久安通氢能科技有限公司 | System and method for rapid hydrogen filling |
-
2015
- 2015-02-04 CN CN201510058308.6A patent/CN105987275A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202165181U (en) * | 2011-04-29 | 2012-03-14 | 北京普发兴业动力科技发展有限责任公司 | Compression system of natural gas |
| CN103244825A (en) * | 2012-02-13 | 2013-08-14 | 北京久安通氢能科技有限公司 | System and method for rapid hydrogen filling |
| CN202580605U (en) * | 2012-03-30 | 2012-12-05 | 蚌埠高科能源装备有限公司 | Natural gas integral skip-mounted type gas-entrapping system |
| CN202691587U (en) * | 2012-05-24 | 2013-01-23 | 北京普发兴业动力科技发展有限责任公司 | Compressed natural gas filling station |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107559583A (en) * | 2017-10-30 | 2018-01-09 | 江林言 | Gas station constant temperature level pressure fast quantification fills control technique and system |
| CN109458549A (en) * | 2018-12-27 | 2019-03-12 | 浙江海畅气体有限公司 | A kind of bomb charging system temperature control equipment |
| CN112213220A (en) * | 2020-09-27 | 2021-01-12 | 西南石油大学 | Device and method for measuring erosion and friction coefficient of sand-containing hydrate slurry to pipeline |
| CN113432036A (en) * | 2021-08-11 | 2021-09-24 | 四川中亚吉特燃气设备有限公司 | Adsorption type natural gas filling device |
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