CN204164652U - A kind of LCNG gas station auxiliary gas feeder and the gas station comprising it - Google Patents

A kind of LCNG gas station auxiliary gas feeder and the gas station comprising it Download PDF

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Publication number
CN204164652U
CN204164652U CN201420454310.6U CN201420454310U CN204164652U CN 204164652 U CN204164652 U CN 204164652U CN 201420454310 U CN201420454310 U CN 201420454310U CN 204164652 U CN204164652 U CN 204164652U
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cng
gas
pressure
caisson
lcng
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豆连旺
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Shanghai Energy Construction Engineering Design And Research Co ltd
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Shanghai Gas Engineering Design & Research Co Ltd
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Abstract

The utility model discloses a kind of LCNG gas station auxiliary gas feeder, comprise CNG caisson, sequence control dish, CNG discharge column and CNG pressure-increasing machine, wherein sequence control dish and CNG caisson, CNG discharge column and CNG pressure-increasing machine, CNG pressure-increasing machine and CNG caisson are connected to each other; Described LCNG gas station auxiliary gas feeder, by CNG discharge column input CNG gas, exports gas by sequence control dish from CNG caisson.A set of LCNG gas station auxiliary gas feeder is set in LCNG gas station, by transporting CNG outside slave station, utilizes station equipment to annotate CNG to automobile, thus ensureing the normal aerating of automobile, improving the air feed reliability of LCNG gas station.

Description

A kind of LCNG gas station auxiliary gas feeder and the gas station comprising it
Technical field
The utility model relates to a kind of gas station air feeder, particularly relates to a kind of LCNG gas station auxiliary gas feeder and comprises its gas station.
background technique
Can produce a large amount of Vehicular exhaust with gasoline or diesel oil for fuel for motor vehicle, the environmental pollution problem caused thus is more outstanding.Rock gas, as clean energy resource, is desirable vehicle alternative fuel.Natural gas used for automobile comprises CNG (compressed natural gas) and LNG (LNG Liquefied natural gas) two kinds of forms, has occurred the Vehicle Fueling Station of the types such as CNG gas station, LNG gas station and LCNG (liquefaction, compressed natural gas) gas station for this reason.
The basic principle of LCNG gas station utilizes LNG tank car or LNG tank formula container car to be transported in LCNG gas station from LNG gas supply station LNG, be stored in after unloading in LNG storage tank, then utilize the supercharging of LNG plunger pump, high-pressure carburetor gasification is the high-pressure natural gas (CNG) of 25MPa, and be stored in air cylinder or gas storage well, or directly to vehicle filling CNG pressurized gas.
At present, the domestic gas supply station of LNG resource that can provide is build the LNG receiving station in coastal area mostly, and also some is LNG liquefaction plant, but building site is also all positioned at remote districts, as Xinjiang, the Inner Mongol or Shaanxi etc.LNG gas supply station distance LCNG gas station is apart from remote, the supply of LNG can be subject to the impact of the factor such as traffic or meteorology, this often causes LNG haulage vehicle to be transported in LCNG gas station by LNG in time, and LCNG gas station cannot normally be run, and has influence on the normal aerating of vehicle.
In addition, LNG price improves constantly in recent years, and the profit of some LCNG gas stations is affected, reduce the normal gas supply capacity of LCNG, or LCNG gas station is run stop, result in vehicle aerating difficulty, occurred the phenomenon of vehicle queue outside LCNG gas station.
The normal table of LCNG gas station runs except being subject to above-mentioned many factors, and in LCNG gas station, the reliability of LNG manufacturing equipment is also the problem that can not be ignored.As large multiplex imported products of equipment such as LNG Subzero valve, LNG plunger pump or LNG high-pressure carburetors, once these equipment break down, change and safeguard that the cycle needed is long, indivedual imported product may also need international vendor to show up maintenance, as LNG plunger pump, it is out of service for a long time that this will cause LCNG gas station to have to.
As can be seen here, LCNG gas station is a complicated system, and any one link factor occurs, all may cause LCNG gas station can not normal air feed, affects the normal aerating of CNG vehicle.
How to improve the air feed reliability of LCNG gas station, ensure the normal aerating of CNG vehicle, become the problem that is worth research.
Therefore, those skilled in the art is devoted to develop a kind of LCNG gas station auxiliary gas feeder, to improve the air feed reliability of LCNG gas station.
Model utility content
Because the above-mentioned defect of prior art, technical problem to be solved in the utility model is when the LNG part of LCNG gas station cannot normally be run, by described LCNG gas station auxiliary gas feeder to CNG vehicle air feed.
For achieving the above object, the utility model provides a kind of LCNG gas station auxiliary gas feeder, comprising:
CNG caisson, sequence control dish, CNG discharge column and CNG pressure-increasing machine, wherein sequence control dish and CNG caisson, CNG discharge column and CNG pressure-increasing machine, CNG pressure-increasing machine and CNG caisson are connected to each other; LCNG gas station auxiliary gas feeder, by CNG discharge column input CNG gas, exports gas by sequence control dish from CNG caisson.
Further, CNG caisson is CNG air cylinder or CNG gas storage well.
Further, CNG caisson comprises high-pressure gas device, middle pressure caisson and low pressure caisson.
Further, CNG discharge column output terminal is connected with CNG pressure-increasing machine input end.
Further, the input end of CNG discharge column is CNG unload flexible pipe.
Further, CNG pressure-increasing machine has high pressure, middle pressure, low pressure three output terminals, and three output terminals are equipped with ball valve, and is connected with the high-pressure gas device of CNG caisson, middle pressure caisson and low pressure caisson respectively.
Further, CNG pressure-increasing machine is the reciprocating pressure-increasing machine of CNG or CNG hydraulic type pressure-increasing machine.
Further, sequence control dish has high pressure, middle pressure and low pressure three output terminals, and three output terminals are equipped with ball valve, and is connected with the high-pressure gas device of CNG caisson, middle pressure caisson and low pressure caisson respectively.
Further, the low-voltage output of CNG pressure-increasing machine is isolated by the low pressure caisson of safety check and CNG caisson.Its role is to, after gas pressure is reduced to certain value in CNG tank car, just start compressor, to vehicle filling CNG or inflate in CNG caisson.
In better embodiment of the present utility model, LCNG gas station is connected with LCNG gas station auxiliary gas feeder, wherein, LCNG gas station auxiliary gas feeder is connected with the CNG gas selling machine of LCNG gas station, CNG gas selling machine has three input ends, be connected with the high-pressure gas device of CNG caisson, middle pressure caisson and low pressure caisson respectively, three input ends of CNG gas selling machine are also connected with three output terminals of sequence control dish respectively.
Based on technical characterstic of the present utility model, LNG or LNG manufacturing equipment fault is lacked in LCNG gas station, when cannot normally run, by starting this LCNG gas station auxiliary gas feeder, the CNG gas storage cylinder of the former LCNG gas station of these equipment utilizations, CNG pipeline and CNG gas selling machine, to CNG automobile aerating.The beneficial effect that therefore can obtain is:
Due to CNG resource relative abundance, no matter LCNG gas station whether have sufficient LNG and Cryo Equipment whether working properly, as long as transport CNG from LCNG gas station, utilize LCNG aerating station equipment to the normal aerating of vehicle, the air feed reliability of LCNG gas station can be improve;
When by CNG air feed, make use of CNG caisson and the CNG gas selling machine of LCNG gas station, improve the Utilization ratio of LCNG gas station, reduce gas station investment when implementing separately CNG gas station and floor space;
The normal operation of LCNG gas station can meet the demand of CNG vehicle aerating, this not only adds the economic benefit of unit of operation, also has important social benefit.
Be described further below with reference to the technique effect of accompanying drawing to design of the present utility model, concrete structure and generation, to understand the purpose of this utility model, characteristic sum effect fully.
Accompanying drawing explanation
Fig. 1 is the LCNG gas station auxiliary gas feeder of a preferred embodiment of the present utility model and the structural representation of LCNG gas station being connected this device.
Wherein, 1:LNG unloading deck; 2:LNG storage tank; 3:LNG plunger pump; 4:LNG high-pressure carburetor; 5: sequence control dish; 6:CNG caisson; 7:CNG gas selling machine; 8:CNG discharge column; 9:CNG pressure-increasing machine; 10:LNG unload flexible pipe; 11: cryogenic globe valve; 12: ball valve; 13: safety check; 14:CNG unload flexible pipe; 61: high-pressure gas device; 62: middle pressure caisson; 63: low pressure caisson.
Embodiment
Below in conjunction with accompanying drawing, embodiment of the present utility model is described in detail.According to following description and in conjunction with claims, advantage of the present utility model and feature will be clearer.It should be noted that, accompanying drawing all adopts the form that simplifies very much and all uses non-ratio accurately, only in order to object that is convenient, aid illustration the utility model embodiment lucidly.
LCNG gas station is as shown in Figure 1 connected to LCNG gas station auxiliary gas feeder, comprise LNG unloading deck 1, LNG storage tank 2, LNG plunger pump 3, LNG high-pressure carburetor 4, sequence control dish 5, CNG caisson 6, CNG gas selling machine 7 and LCNG gas station auxiliary gas feeder, wherein, the input end of LNG unloading deck is LNG unload flexible pipe 10, the output terminal of LNG unloading deck 1 is connected with the cryogenic globe valve 11 of the input end of LNG storage tank 2 through playing on-off action, the input end of LNG plunger pump 3 is connected through cryogenic globe valve with the output terminal of LNG storage tank 2, the output terminal of LNG plunger pump 3 is connected through cryogenic globe valve with the input end of LNG high-pressure carburetor 4, the output terminal of LNG high-pressure carburetor 4 is connected with the ball valve 12 of the input end of sequence control dish 5 through playing on-off action, the output terminal of sequence control dish 5 is connected with CNG caisson 6 and CNG gas selling machine 7 respectively through ball valve, CNG caisson 6 is connected with CNG gas selling machine 7, CNG caisson 6 is CNG air cylinder or CNG gas storage well.
Further, LCNG gas station auxiliary gas feeder comprises CNG caisson 6, sequence control dish 5, CNG discharge column 8 and CNG pressure-increasing machine 9, and LCNG gas station auxiliary gas feeder, CNG pipeline and CNG gas selling machine 7 being combined use can to the aerating of CNG vehicle.
Further, the input end of CNG discharge column 8 is that CNG unload flexible pipe 14, CNG discharge column 8 output terminal is connected with CNG pressure-increasing machine 9 input end, and CNG pressure-increasing machine 9 is the reciprocating pressure-increasing machine of CNG or CNG hydraulic type pressure-increasing machine.
Further, CNG caisson 6 comprises high-pressure gas device 61, middle pressure caisson 62 and low pressure caisson 63, sequence control dish 5 has high pressure, middle pressure and low pressure three output terminals, is connected respectively with the high-pressure gas device 61 of CNG caisson 6, middle pressure caisson 62 and low pressure caisson 63.
Further, CNG gas selling machine 7 has three input ends, be connected with the high-pressure gas device 61 of CNG caisson 6, middle pressure caisson 62 and low pressure caisson 63 respectively, three input ends of described CNG gas selling machine 7 are also connected with three output terminals of described sequence control dish 5 respectively.
Further, CNG pressure-increasing machine 9 has high pressure, middle pressure, low pressure three output terminals, three output terminals are equipped with ball valve, and be connected with the high-pressure gas device 61 of CNG caisson 6, middle pressure caisson 62 and low pressure caisson 63 respectively, three output terminals of described CNG pressure-increasing machine 9 are also connected with three input ends of described CNG gas selling machine 7 respectively.
Further, the low-voltage output of CNG pressure-increasing machine 9 is isolated by the low pressure caisson 63 of safety check 13 with CNG caisson 6, and safety check 13 plays and blocks the effect of CNG pressure-increasing machine 9 to the low pressure caisson aerating of CNG caisson 6.Its beneficial effect is: gas station auxiliary gas feeder directly utilizes CNG tank car as low pressure air cylinder group, the low pressure caisson of the CNG caisson now in former LCNG gas station does not participate in gas storage, if the CNG in tank car is stored in the low pressure air cylinder group in former LCNG gas station through compressor, compressor in low pressure caisson during gas storage by consumption of electric power, simultaneously also will reduce the efficiency of system; The utility model utilizes CNG tank car as low pressure caisson, when system brings into operation, directly from CNG tank car, get gas, and to vehicle aerating, now compressor does not work, after gas pressure is reduced to certain value in CNG tank car, just start compressor, to vehicle filling CNG or inflate in CNG caisson.
The utility model embodiment has set up LCNG gas station auxiliary gas feeder in the LCNG gas station of routine, low temperature LNG gasifies as normal temperature CNG through LNG high-pressure carburetor 4 by described LCNG gas station, because LNG temperature is low, so use described cryogenic globe valve 11, in addition, described ball valve 12 uses normal temperature high voltage ball valve.Described safety check 13 can make CNG by CNG caisson 6 one-way flow to CNG gas selling machine 7, and isolates the low pressure CNG of CNG pressure-increasing machine 9 input, accelerates the speed that CNG pressure-increasing machine 9 stores CNG in CNG caisson 6.
The basic principle of LCNG gas station utilizes LNG transport vehicle to be transported in LCNG gas station from LNG gas supply station LNG, LNG transport vehicle can be LNG tank car or LNG tank formula container car, LNG transport vehicle flexible pipe is connected with LNG unload flexible pipe 10, the boosting of the air temperature type on LNG tank car vaporizer can be utilized to boost to LNG tank car storage tank, also by the boosting vaporizer of unloading in the LNG unloading deck 1 that arranges in LCNG gas station, LNG tank formula container car can be boosted, make to form certain pressure reduction between LNG transport vehicle and LNG storage tank 2, this pressure reduction is utilized to be discharged in LNG storage tank 2 by the LNG in LNG transport vehicle.Then utilize LNG plunger pump 3 that liquid LNG is forced into 25MPa, sending into gasification in LNG high-pressure carburetor 4 is the pressurized gas of 25MPa, rock gas entering order control panel 5 after gasification, be stored in the CNG such as air cylinder or gas storage well caisson 6, also directly can pass through CNG gas selling machine 7 to vehicle filling CNG high-pressure natural gas.
In the LCNG gas station normal course of operation of the present embodiment, the LCNG gas station auxiliary gas feeder comprising CNG discharge column 8 and CNG pressure-increasing machine 9 is in stand-by state.
When the LCNG gas station of the present embodiment causes LNG part normally to run for a certain reason, i.e. LNG unloading deck 1, LNG storage tank 2, LNG plunger pump 3, when LNG high-pressure carburetor 4 or sequence control dish 5 cannot normally run, LCNG gas station auxiliary gas feeder for subsequent use can be started at once, namely by CNG transport vehicle, CNG is transported in LCNG gas station, CNG transport vehicle flexible pipe is connected with CNG discharge column flexible pipe 14, gas is unloaded by CNG discharge column 8, and utilize the high-pressure gas device 61 in LCNG gas station in CNG caisson 6 and middle pressure caisson 62, CNG pipeline and CNG gas selling machine 7 give the aerating of CNG vehicle.When CNG underpressure in CNG transport vehicle, after starting the 9 pairs of CNG superchargings of CNG pressure-increasing machine, to the aerating of CNG vehicle.When not needing aerating, CNG pressure-increasing machine 9 is inflated to the high-pressure gas device 61 of CNG caisson 6, then to middle pressure caisson 62 air feed.By arranging safety check 13 between the low pressure caisson and the low-voltage output of CNG pressure-increasing machine 9 of CNG caisson 6, CNG pressure-increasing machine 9 is stoped to be inflated to described low pressure caisson 63.Aerating is needed once there be CNG vehicle, LCNG gas station auxiliary gas feeder can be directly utilized to get gas in the CNG transport vehicle steel cylinder used as low pressure caisson and to CNG vehicle inflatable, and then from CNG caisson 6, press caisson 62 to get gas, to CNG vehicle inflatable, then get gas and to CNG vehicle inflatable from the high-pressure gas device 61 of CNG caisson 6.
Compared with prior art, the beneficial effect that the utility model embodiment can obtain is:
Due to CNG resource relative abundance, no matter LCNG gas station whether have sufficient LNG and Cryo Equipment whether working properly, as long as transport CNG from LCNG gas station, utilize LCNG aerating station equipment to the normal aerating of vehicle, the air feed reliability of LCNG gas station can be improve;
When by CNG air feed, make use of CNG caisson and the CNG gas selling machine of LCNG gas station, improve the Utilization ratio of LCNG gas station, reduce gas station investment when implementing separately CNG gas station and floor space;
The normal operation of LCNG gas station can meet the demand of CNG vehicle aerating, this not only adds the economic benefit of unit of operation, also has important social benefit.
More than describe preferred embodiment of the present utility model in detail.Should be appreciated that those of ordinary skill in the art just can make many modifications and variations according to design of the present utility model without the need to creative work.Therefore, all technician in the art according to design of the present utility model on the basis of existing technology by the available technological scheme of logical analysis, reasoning, or a limited experiment, all should by the determined protection domain of claims.

Claims (10)

1. a LCNG gas station auxiliary gas feeder, it is characterized in that, comprise CNG caisson, sequence control dish, CNG discharge column and CNG pressure-increasing machine, wherein said sequence control dish and described CNG caisson, described CNG discharge column and described CNG pressure-increasing machine, described CNG pressure-increasing machine and described CNG caisson are connected to each other; Described LCNG gas station auxiliary gas feeder, by described CNG discharge column input CNG gas, exports gas by described sequence control dish from described CNG caisson.
2. LCNG gas station as claimed in claim 1 auxiliary gas feeder, it is characterized in that, described CNG caisson is CNG air cylinder or CNG gas storage well.
3. LCNG gas station as claimed in claim 1 auxiliary gas feeder, it is characterized in that, described CNG caisson comprises high-pressure gas device, middle pressure caisson and low pressure caisson.
4. LCNG gas station as claimed in claim 1 auxiliary gas feeder, it is characterized in that, described CNG discharge column output terminal is connected with CNG pressure-increasing machine input end.
5. LCNG gas station as claimed in claim 1 auxiliary gas feeder, it is characterized in that, the input end of described CNG discharge column is CNG unload flexible pipe.
6. LCNG gas station as claimed in claim 3 auxiliary gas feeder, it is characterized in that, described CNG pressure-increasing machine has high pressure, middle pressure, low pressure three output terminals, three output terminals are equipped with ball valve, and are connected with the high-pressure gas device of CNG caisson, middle pressure caisson and low pressure caisson respectively.
7. LCNG gas station as claimed in claim 1 auxiliary gas feeder, it is characterized in that, described CNG pressure-increasing machine is the reciprocating pressure-increasing machine of CNG or CNG hydraulic type pressure-increasing machine.
8. LCNG gas station as claimed in claim 3 auxiliary gas feeder, it is characterized in that, described sequence control dish has high pressure, middle pressure and low pressure three output terminals, three output terminals are equipped with ball valve, and are connected with the high-pressure gas device of described CNG caisson, middle pressure caisson and low pressure caisson respectively.
9. LCNG gas station as claimed in claim 1 auxiliary gas feeder, it is characterized in that, the low-voltage output of described CNG pressure-increasing machine is isolated by the low pressure caisson of safety check and CNG caisson.
10. one kind comprises the LCNG gas station of the LCNG gas station auxiliary gas feeder as described in any one of claim 1-9, it is characterized in that, described LCNG gas station auxiliary gas feeder is connected with the CNG gas selling machine of described LCNG gas station, described CNG gas selling machine has three input ends, be connected with the high-pressure gas device of described CNG caisson, middle pressure caisson and low pressure caisson respectively, three input ends of described CNG gas selling machine are also connected with three output terminals of described sequence control dish respectively.
CN201420454310.6U 2014-08-13 2014-08-13 A kind of LCNG gas station auxiliary gas feeder and the gas station comprising it Active CN204164652U (en)

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105257976A (en) * 2015-10-27 2016-01-20 西南石油大学 Compressed natural gas discharging device and adjustment and control method
CN106949374A (en) * 2017-05-03 2017-07-14 自贡通达机器制造有限公司 CNG refueling systems and method
CN107091254A (en) * 2017-06-29 2017-08-25 自贡通达机器制造有限公司 LNG/L CNG hydraulic pressure intensifiers and gas station

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105257976A (en) * 2015-10-27 2016-01-20 西南石油大学 Compressed natural gas discharging device and adjustment and control method
CN106949374A (en) * 2017-05-03 2017-07-14 自贡通达机器制造有限公司 CNG refueling systems and method
CN106949374B (en) * 2017-05-03 2019-01-29 自贡通达机器制造有限公司 CNG refueling system and method
CN107091254A (en) * 2017-06-29 2017-08-25 自贡通达机器制造有限公司 LNG/L CNG hydraulic pressure intensifiers and gas station
US10823334B2 (en) 2017-06-29 2020-11-03 Zigong Tongda Machinery Manufacturing Co., Ltd Hydraulic pressurization device for liquefied natural gas and liquefied-compressed natural gas

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Address after: 200135 no.887 Gushan Road, Pudong New Area, Shanghai

Patentee after: Shanghai Energy Construction Engineering Design and Research Co.,Ltd.

Address before: 200135 no.887 Gushan Road, Pudong New Area, Shanghai

Patentee before: SHANGHAI GAS ENGINEERING DESIGN & RESEARCH Co.,Ltd.

CP01 Change in the name or title of a patent holder