CN204534109U - LNG is multi-functional fills integrated system - Google Patents
LNG is multi-functional fills integrated system Download PDFInfo
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- CN204534109U CN204534109U CN201520176821.0U CN201520176821U CN204534109U CN 204534109 U CN204534109 U CN 204534109U CN 201520176821 U CN201520176821 U CN 201520176821U CN 204534109 U CN204534109 U CN 204534109U
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Abstract
The utility model relates to LNG gas station and fills field, is specially that a kind of LNG is multi-functional fills integrated system.By the LNG gas station of function singleness from application market angle widely, automobile-used LNG is filled function, LNG gas cylinder group fills function, LNG is converted into that L-CNG gas cylinder group fills function, L-CNG small gas cylinder group fills function, four kinds fill function by sharing the integrated multi-functional charging system of mode of LNG storage tank, significantly can promote the turnover rate of LNG storage tank, meet the more LNG market demand, while reducing social investment and promoting investment yield, significantly can also cut down the quantity in allied hazard source in service area.
Description
Technical field
The utility model relates to LNG gas station and fills field, is specially that a kind of LNG is multi-functional fills integrated system.
Background technique
LNG is the english abbreviation of LNG Liquefied natural gas, and main component is methane.Natural gas via purified treatment (removes heavy hydrocarbon, sulphide, CO
2, water etc.) after, deep cooling is to-162 DEG C at ambient pressure, changes liquid state into, be called LNG Liquefied natural gas (Liquefied Natural Gsa) by gaseous state, is called for short LNG.LNG is colourless, tasteless, the five poisonous creatures: scorpion, viper, centipede, house lizard, toad and non-corrosiveness, and its volume is about with amount gaseous natural gas volume 1/625; Density is about 45% of water; The density value 0.425-0.46kg/L of LNG; Boiling point-162 DEG C; Density 0.6-0.7kg/m after gasification
3; Calorific value 41.5-45.3MJ/m
3; Gas-liquid volume ratio 625:1; Octane value 130; Storing temperature-160 ~-120 DEG C; Operation pressure 0 ~ 1.0MPa.
Existing LNG gas station is for LNG automobile fills the special charging system of LNG.LNG station system comprises that LNG storage tank, LNG pump and pump pond, LNG measure, LNG fill adapter (rifle), LNG transfer line, automated measurement &control System's composition.
From the application area of LNG, due to economy, the feature such as clean, safety, memory density are large of LNG, being not only desirable vehicle alternative fuel (vapour/diesel oil), is almost the alternative energy source of all traditional energies.Such as, the alternative liquefied petroleum gas of LNG, propane, acetylene etc. fuel.Be applicable to cities and towns gasification, metal flame cutting, metal cold process, machine-building, hotel and food and drink, field construction operation and power, boiler oil etc. are provided.
Therefore, on LNG gas station (vehicle fuel charging system) basis, function is increased by system integration method, it is a kind of effective technology method meeting the LNG market demand widely, the investment yield of existing LNG gas station can be improved, also can meet other market demands except vehicle alternative fuel.
Summary of the invention
The utility model is in order to solve the problem of current LNG gas station function singleness, provide that a kind of LNG is multi-functional fills integrated system, from LNG application market angle widely, LNG gas station to be extended for by system integration method by simple function and multiplely to meet the functional zone filling specification.
The utility model adopts following technological scheme to realize:
It is a kind of that LNG is multi-functional fills integrated system, comprise gas station storage tank, the LNG liquid outlet of described gas station storage tank is connected with the liquid entering hole of cryogenic high pressure pump by the pipeline being provided with the first pneumatic valve, and the circulating liquid mouth of described cryogenic high pressure pump is connected with the liquid gas that returns of gas station storage tank by the pipeline that is provided with the second pneumatic valve; Described cryogenic high pressure pump is provided with temperature transducer, and the liquid outlet of cryogenic high pressure pump is divided into two-way after being provided with the 3rd pneumatic valve pipeline:
The liquid entering hole filling row after the first via is provided with the 4th pneumatic valve with LNG is connected, described in several of the row of filling fill mouth and connect low-temperature bottle; The outlet that described LNG fills row is connected with the import of low-temperature vaporization device by the pipeline being provided with the 6th pneumatic valve, the outlet of described low-temperature vaporization device is connected by the import of the pipeline with molding machine that are provided with the first pressure transducer, and the outlet of described molding machine is connected by the second import of the pipeline with high pressure tank that are provided with the second one-way valve.
Second tunnel is provided with the 5th pneumatic valve and is connected with the import of sky temperature high-pressure carburetor with the pipeline of the 3rd one-way valve, the outlet of described sky temperature high-pressure carburetor is connected by the import of pipeline with water-bath high-pressure carburetor, the outlet of described water-bath high-pressure carburetor is connected with the first import of high pressure tank by pipeline, the outlet of described high pressure tank is connected with the import that L-CNG fills row with the pipeline of large discharge decompressor by being provided with the second pressure transducer, and some mouths that fill that described L-CNG fills row connect steel cylinder.
All pneumatic valves are by electric control system controls action.
Control after the startup of described molding machine and the signal that stops obtaining from the first pressure transducer and/or the second pressure transducer by automatical control system.
LNG fills: the whole automatical control system filling integrated system goes to LNG filled state by holding state, and electric control system controls opens the first pneumatic valve 3(main valve), the second pneumatic valve 5, the 4th pneumatic valve 8, close the 3rd pneumatic valve 7, the 6th pneumatic valve 12.LNG is flowed out by the liquid outlet of gas station storage tank 1, and enter cryogenic high pressure pump 4 through pipeline, the first pneumatic valve 3, carry out pump housing precooling process, now cryogenic gas flows back to storage tank 1 through the second pneumatic valve 5.When in temperature transducer 26 perception pump, temperature is lower than setting value, electric control system controls the 3rd pneumatic valve 7 is opened.LNG enters LNG and fills row 9 through pipeline, the 4th pneumatic valve 8, then be filled with low-temperature bottle 10 through cryogenic hose.After filling end, automatical control system closes the 3rd pneumatic valve 7, opens the 6th pneumatic valve 12.Now, LNG fills LNG in row 9 after the 6th pneumatic valve 12, low-temperature vaporization device 13 gasify, and is forced into setting pressure, delivers to high pressure storage tank 17 through the second one-way valve 16 through moulding press 15.
L-CNG fills: the whole automatical control system filling integrated system goes to L-CNG filled state by holding state, electric control system controls opens the first pneumatic valve 3(main valve), the second pneumatic valve 5, the 5th pneumatic valve 11, close the 3rd pneumatic valve 7, the 4th pneumatic valve 8, the 6th pneumatic valve 12.LNG is flowed out by the liquid outlet of gas station storage tank 1, and pipeline, the first pneumatic valve 3 are entered cryogenic high pressure pump 4, carries out pump housing precooling process, now cryogenic gas flows back to storage tank 1 through the second pneumatic valve 5.When in temperature transducer 26 perception pump, temperature is lower than setting value, electric control system controls the 3rd pneumatic valve 7 is opened.LNG enters empty temperature high-pressure carburetor 19 vaporize through pipeline, the 5th pneumatic valve 11, one-way valve 18, then enters water-bath high-pressure carburetor 20 and gasify to normal temperature.L-CNG after being gasified totally enters high pressure tank 17, enters L-CNG and fills row 24, then be filled with steel cylinder 25 through high pressure hose after large discharge decompressor 22 reduces pressure.
When integrated system is in the emergency situations such as holding state or reply power failure, LNG in pipeline becomes gaseous state along with the rising of temperature, arrange protection pipeline, the pipeline be positioned at after the 3rd pneumatic valve is connected with the import of low-temperature vaporization device by the pipeline being provided with one-way valve; The pipeline be positioned at before the 3rd pneumatic valve is connected with the pipeline be positioned at after the second one-way valve by the pipeline being provided with safety valve.Become the natural gas via of gaseous state, safety valve 27 and/or the first one-way valve 2 and enter low-temperature vaporization device 13, thus under the first pressure transducer 14 controls, finally enter high pressure tank 17.Meanwhile, the pipeline of safety valve is also connected and installed with between the liquid entering hole of described cryogenic high pressure pump and the liquid return hole of gas station storage tank; In main line, the rock gas of gaseous state also can enter storage tank 1 by safety valve 27 backflow.
Wherein, the startup of molding machine 15 and stopping are by electric control system controls, and when the pressure signal namely obtained when the first pressure transducer 14 is greater than setting value, electric control system controls molding machine 15 starts; When the pressure signal that the first pressure transducer 14 obtains is lower than setting value, electric control system controls molding machine 15 stops; Meanwhile, when the pressure signal high pressure set point that the second pressure transducer 21 obtains, electric control system controls molding machine 15 stops.
In addition, the LNG liquid outlet of gas station storage tank also connects aerating sled successively by pipeline, filling machine fills LNG to filling vehicle.
The utility model is reasonable in design, by the LNG gas station of function singleness from application market angle widely, automobile-used LNG is filled function, LNG gas cylinder group fills function, LNG is converted into that L-CNG gas cylinder group fills function, L-CNG small gas cylinder group fills function, four kinds fill function by sharing the integrated multi-functional charging system of mode of LNG storage tank, significantly can promote the turnover rate of LNG storage tank, meet the more LNG market demand, reduce social investment, while further lifting investment yield, significantly can also cut down the quantity in allied hazard source in service area.
Accompanying drawing explanation
Fig. 1 represents connection diagram of the present utility model.
In figure, 1-gas station storage tank, 2-first one-way valve, 3-first pneumatic valve, 4-cryogenic high pressure pump, 5-second pneumatic valve, 6-first pressure gauge, 7-the 3rd pneumatic valve, 8-the 4th pneumatic valve, 9-LNG fills row, 10-low-temperature bottle, 11-the 5th pneumatic valve, 12-the 6th pneumatic valve, 13-vaporizer, 14-first pressure transducer, 15-molding machine, 16-second one-way valve, 17-high pressure tank, 18-the 3rd one-way valve, the empty warm high-pressure carburetor of 19-, 20-water-bath high-pressure carburetor, 21-second pressure transducer, 22-large discharge decompressor, 23-second pressure gauge, 24-L-CNG fills row, 25-steel cylinder, 26-temperature transducer, 27-safety valve, 28-aerating is prized, 29-filling machine, 30-filling vehicle.
Embodiment
Below in conjunction with accompanying drawing, specific embodiment of the utility model is described in detail.
It is a kind of that LNG is multi-functional fills integrated system, as shown in Figure 1, comprise gas station storage tank 1, the LNG liquid outlet of described gas station storage tank 1 is connected with the liquid entering hole of cryogenic high pressure pump 4 by the pipeline being provided with the first pneumatic valve 3, and the circulating liquid mouth of described cryogenic high pressure pump 4 is connected by the pipeline that is provided with the second pneumatic valve 5 liquid return hole with gas station storage tank 1; Described cryogenic high pressure pump 4 is provided with temperature transducer 26, and the liquid outlet of cryogenic high pressure pump 4 is divided into two-way after being provided with the 3rd pneumatic valve 7 pipeline:
The first via is used for LNG and fills, and is provided with the liquid entering hole filling row 9 after the 4th pneumatic valve 8 with LNG and is connected, described in several of the row of filling 9 fill mouth connection low-temperature bottle 10; Be in holding state or after filling end, rock gas in the row of filling 9 after gasification is by entering high pressure tank 17 with lower pipeline: the outlet that described LNG fills row 9 is connected with the import of low-temperature vaporization device 13 by the pipeline being provided with the 6th pneumatic valve 12, the outlet of described low-temperature vaporization device 13 is connected with the import of molding machine 15 by the pipeline being provided with the first pressure transducer 14, and the outlet of described molding machine 15 is connected by the second import of the pipeline with high pressure tank 17 that are provided with the second one-way valve 16.
Second tunnel is used for L-CNG and fills, 5th pneumatic valve 11 is installed be connected with the import of sky temperature high-pressure carburetor 19 with the pipeline of the 3rd one-way valve (18), the outlet of described sky temperature high-pressure carburetor 19 is connected by the import of pipeline with water-bath high-pressure carburetor 20, the outlet of described water-bath high-pressure carburetor 20 is connected with the first import of high pressure tank 17 by pipeline, the outlet of described high pressure tank 17 is connected with the import that L-CNG fills row 24 with the pipeline of large discharge decompressor 22 by being provided with the second pressure transducer 21, some mouths that fill that described L-CNG fills row 24 connect steel cylinder 25.
All pneumatic valves are by electric control system controls action.
The startup of described molding machine 15 and stopping are by electric control system controls, and when the pressure signal namely obtained when the first pressure transducer 14 is greater than setting value, electric control system controls molding machine 15 starts; When the pressure signal that the first pressure transducer 14 obtains is lower than setting value, electric control system controls molding machine 15 stops; Meanwhile, when the pressure signal high pressure set point that the second pressure transducer 21 obtains, electric control system controls molding machine 15 stops.By in the high pressure tank 17 that is in the first via in natural gas transport to the second tunnel of gaseous state, prevent the pressure under standby condition in the first via from raising, also improve the utilization ratio of rock gas.
Protection pipeline when being in holding state is as follows: the pipeline be positioned at after the 3rd pneumatic valve 7 is connected with the import of low-temperature vaporization device 13 by the pipeline being provided with one-way valve 2; The pipeline be positioned at before the 3rd pneumatic valve 7 is connected with the pipeline be positioned at after the second one-way valve 2 by the pipeline being provided with safety valve 27.Under standby condition, the gaseous natural gas in pipeline can enter high pressure tank 17 by vaporizer 13 and molding machine 15, prevents the pressure under standby condition in the first via from raising, also improves the utilization ratio of rock gas.
The pipeline of safety valve 27 is also connected and installed with between the liquid entering hole of described cryogenic high pressure pump 4 and the liquid return hole of gas station storage tank 1.Under standby condition, the gaseous natural gas in main line can be back in storage tank 1 by safety valve.
In addition, be positioned on the pipeline before the 3rd pneumatic valve 7 and first pressure gauge 6 be installed, for checking the force value in storage tank 1 at any time; The pipeline that large discharge decompressor 22 and L-CNG fill between row 24 is provided with the second pressure gauge 23, for checking post-decompression force value at any time.
Existing LNG car fills path, and the LNG liquid outlet of described gas station storage tank 1 also connects aerating sled 27 successively by pipeline, filling machine 28 fills LNG to filling vehicle 29.
This model utility expands the application area of existing LNG gas station, can simultaneously for new energy vehicle, civil corporation, food and beverage enterprise etc. provide rock gas.
It should be noted last that; above embodiment is only in order to illustrate the technical solution of the utility model and unrestricted; although be described in detail with reference to embodiment's the utility model; those of ordinary skill in the art is to be understood that; the technical solution of the utility model is modified or equivalent replacement; do not depart from the spirit and scope of the technical solution of the utility model, it all should be contained in claims of the present utility model.
Claims (7)
1. a LNG is multi-functional fills integrated system, it is characterized in that: comprise gas station storage tank (1), the LNG liquid outlet of described gas station storage tank (1) is connected with the liquid entering hole of cryogenic high pressure pump (4) by the pipeline being provided with the first pneumatic valve (3), and the circulating liquid mouth of described cryogenic high pressure pump (4) is connected with the liquid return hole of gas station storage tank (1) by the pipeline being provided with the second pneumatic valve (5); Described cryogenic high pressure pump (4) is provided with temperature transducer (26), and the liquid outlet of cryogenic high pressure pump (4) is divided into two-way after being provided with the 3rd pneumatic valve (7) pipeline:
The first via is provided with the 4th pneumatic valve (8) and fills the liquid entering hole arranging (9) afterwards with LNG and be connected, described in several of the row of filling (9) fill mouth and connect low-temperature bottle (10); The outlet that described LNG fills row (9) is connected with the import of low-temperature vaporization device (13) by the pipeline being provided with the 6th pneumatic valve (12), the outlet of described low-temperature vaporization device (13) is connected with the import of molding machine (15) by the pipeline being provided with the first pressure transducer (14), and the outlet of described molding machine (15) is connected with the second import of high pressure tank (17) by the pipeline being provided with the second one-way valve (16);
Second tunnel is provided with the 5th pneumatic valve (11) and is connected with the import of sky temperature high-pressure carburetor (19) with the pipeline of the 3rd one-way valve (18), the outlet of described sky temperature high-pressure carburetor (19) is connected by the import of pipeline with water-bath high-pressure carburetor (20), the outlet of described water-bath high-pressure carburetor (20) is connected by first import of pipeline with high pressure tank (17), the outlet of described high pressure tank (17) fills the import of arranging (24) with the pipeline of large discharge decompressor (22) with L-CNG be connected by being provided with the second pressure transducer (21), some mouths that fill that described L-CNG fills row (24) connect steel cylinder (25).
2. LNG according to claim 1 is multi-functional fills integrated system, it is characterized in that: the pipeline be positioned at after the 3rd pneumatic valve (7) is connected with the import of low-temperature vaporization device (13) by the pipeline being provided with one-way valve (2); The pipeline be positioned at before the 3rd pneumatic valve (7) is connected with the pipeline be positioned at after the second one-way valve (2) by the pipeline being provided with safety valve (27).
3. LNG according to claim 1 and 2 is multi-functional fills integrated system, it is characterized in that: be positioned on the pipeline before the 3rd pneumatic valve (7) and be provided with the first pressure gauge (6); Be positioned on pipeline that large discharge decompressor (22) and L-CNG fill between row (24) and the second pressure gauge (23) is installed.
4. LNG according to claim 3 is multi-functional fills integrated system, it is characterized in that: the pipeline being also connected and installed with safety valve (27) between the liquid entering hole of described cryogenic high pressure pump (4) and the liquid return hole of gas station storage tank (1).
5. LNG according to claim 1 and 2 is multi-functional fills integrated system, it is characterized in that: the LNG liquid outlet of described gas station storage tank (1) also connects aerating sled (27) successively by pipeline, filling machine (28) fills LNG to filling vehicle (29).
6. LNG according to claim 3 is multi-functional fills integrated system, it is characterized in that: the LNG liquid outlet of described gas station storage tank (1) also connects aerating sled (27) successively by pipeline, filling machine (28) fills LNG to filling vehicle (29).
7. LNG according to claim 4 is multi-functional fills integrated system, it is characterized in that: the LNG liquid outlet of described gas station storage tank (1) also connects aerating sled (27) successively by pipeline, filling machine (28) fills LNG to filling vehicle (29).
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