CN102536519A - Liquefied natural gas automobile fuel system with adsorption tank - Google Patents
Liquefied natural gas automobile fuel system with adsorption tank Download PDFInfo
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- CN102536519A CN102536519A CN2011104556126A CN201110455612A CN102536519A CN 102536519 A CN102536519 A CN 102536519A CN 2011104556126 A CN2011104556126 A CN 2011104556126A CN 201110455612 A CN201110455612 A CN 201110455612A CN 102536519 A CN102536519 A CN 102536519A
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/10—Internal combustion engine [ICE] based vehicles
- Y02T10/30—Use of alternative fuels, e.g. biofuels
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Abstract
The invention provides a liquefied natural gas automobile fuel system with an adsorption tank. The liquefied natural gas automobile fuel system comprises a liquefied natural gas storage tank, wherein the bottom outlet of the liquefied natural gas storage tank is connected with the inlet of a vaporizer through a control valve, the outlet of the vaporizer is connected with the inlet of a pressure reducer, the outlet of the pressure reducer is connected with a gas inlet channel of an engine, the gas exhaust channel of the engine is connected with the inlet of a tail gas purifier, the outlet of the tail gas purifier is connected with the inlet of an outer cavity of the adsorption tank, the top outlet of the liquefied natural gas storage tank is connected with the inlet of an inner cavity of the adsorption tank through a gas storage valve, and the outlet of the inner cavity of the adsorption tank is connected with the gas inlet channel of the engine through a gas supply valve. According to the invention, the characteristic that the adsorptive capacity of an activated carbon adsorbent to natural gas is significantly enhanced at low temperature is utilized; when a liquefied natural gas automobile stops, activated carbon is used for adsorbing low-temperature natural gas generated due to slow vaporizing of the fuel; and when the automobile runs, the high-temperature exhaust heat of the engine is utilized to adsorb activated carbon, and the released natural gas is supplied for the engine. Therefore, the liquefied natural gas automobile fuel system has the advantages of reliable operation, energy saving and environmental friendliness.
Description
Technical field
The present invention relates to the LNGV technical field, be specifically related to a kind of LNGV fuel system with adsorption tanks.
Background technique
Absorbing and storing rock gas technology is in storage tank, to pack into to have high-specific surface area and the special-purpose sorbent that enriches microcellular structure, utilizes the effect of Van der Waals force between solid absorption agent molecule and the rock gas molecule that rock gas is adsorbed.Temperature is low more, pressure is high more, and the adsorptive power of sorbent is strong more.When pressure was lower than the external world in the storage tank, the gas that gets into storage tank was adsorbed and stores, and inflation absorption is exothermic process.When pressure was higher than the external world in the storage tank, the desorbing gas in the storage tank left storage tank, and the venting desorption is an endothermic process.Absorbing and storing rock gas technology is mainly used in gas-fueled vehicles at present, and the absorbed natural gas automobile of trial run has abroad been arranged.The advantage of automobile-used absorbing and storing rock gas technology is that storage tank is in light weight, pressure is low, safe and reliable, shortcoming is that gas storage density is low, the adsorption/desorption process slowly and follow thermal effect.
In recent years, for protecting environment and reducing the degree of dependence to oil, a lot of in the world countries are devoted to develop gas combustion automobile, and wherein LNGV is good in China's growth momentum, obtains using in a plurality of provinces and cities.Existing LNGV fuel system mainly comprises fuel pot, connecting pipeline, vaporizing unit, decompressor, safety installations etc.LNG Liquefied natural gas storing temperature in the fuel pot gets into motor generally below-160 ℃ after overflash rewarming, decompression mix.Existing LNGV exists fuel from the vaporization problem, and when promptly stopping for a long time, because fuel pot has the heat of leakage, LNG Liquefied natural gas is vaporization slowly, causes that the fuel pot internal pressure raises.The measure that addresses this problem at present is that safety valve is opened venting automatically, thereby causes waste of fuel and environmental pollution after the pressure in the fuel pot surpasses setting value, and ventilates and be prone to form potential safety hazard when smooth.
Summary of the invention
In order to overcome the shortcoming of above-mentioned existing technology; The object of the present invention is to provide a kind of LNGV fuel system with adsorption tanks; Utilize absorbing and storing rock gas technology to collect storage slow LNG Liquefied natural gas of vaporization when stopping, have the advantage of simple, the reliable and energy-conserving and environment-protective of device.
For achieving the above object, the scheme that the present invention takes is:
A kind of LNGV fuel system with adsorption tanks; Comprise LNG tank 1; The bottom outlet of LNG tank 1 is connected with the import of vaporizer 3 through control valve 2, and the outlet of vaporizer 3 is connected with the import of decompressor 4, and the outlet of decompressor 4 is connected with the gas-entered passageway of motor 5; The exhaust passage of motor 5 is connected with the import of exhaust purifier 6; The outlet of exhaust purifier 6 is connected with the outer chamber import 15 of adsorption tanks 8, and the top exit of LNG tank 1 is connected with the inner chamber body import 16 of adsorption tanks 8 through gas storage valve 9, and the inner chamber body outlet 14 of adsorption tanks 8 is connected with the gas-entered passageway of motor 5 through steam supply valve 7.
Described adsorption tanks 8; Outward appearance is cylindrical, is the aluminum alloy double-layer structure, adsorption tanks shell 10 and the interior logical engine exhaust of the cavity of adsorption tanks inner casing 11 formations; Fill acticarbon 12 in the cavity that adsorption tanks inner casing 11 constitutes; Acticarbon 12 is fixing by filter plate 13, and the inner chamber body import 16 of adsorption tanks 8 is communicated with inner chamber body outlet 14, and outer chamber import 15 is communicated with outer chamber outlet 17.
Working principle of the present invention is: utilize the characteristics that 12 pairs of rock gas adsorptive poweies of acticarbon significantly strengthen under the low temperature; When LNGV stops; The cryogenic natural gas of slowly vaporizing and producing with active carbon adsorption fuel; When driving, utilize the heat of engine high-temperature exhaust air that active carbon is carried out desorption, the natural gas supply of emitting is given motor.
The present invention has overcome that gas storage density in the automobile-used absorbing and storing technology is low, the adsorption/desorption process slowly and follow the deficiency of thermal effect; Brought into play the advantage that adsorption tanks are in light weight, gas storage pressure is low; Solved the LNGV problem that the fuel pot internal pressure raises when long-time the parking; Be convenient to original LNGV fuel system is done transformation, have the advantage of easy reliable, energy-conserving and environment-protective.
Description of drawings
Fig. 1 is a structural representation of the present invention.
Fig. 2 is the cut-away view of adsorption tanks 8 of the present invention.
Embodiment
Below in conjunction with accompanying drawing the present invention is done further detailed explanation.
See figures.1.and.2, a kind of LNGV fuel system with adsorption tanks comprises LNG tank 1; The bottom outlet of LNG tank 1 is connected with the import of vaporizer 3 through control valve 2, and control valve 2 can be supplied with and control liquefied natural gas vaporization amount by the start-stop LNG Liquefied natural gas, and vaporizer 3 is a spiral tube exchanger; The logical LNG Liquefied natural gas of pipe side, shell-side leads to engine cooling water, and the outlet of vaporizer 3 is connected with the import of decompressor 4; Decompressor 4 is made up of two pressure regulator valve polyphones; The outlet of decompressor 4 is connected with the gas-entered passageway of motor 5, gets into the cylinder combustion of motor 5 after rock gas and the air mixing, and the exhaust passage of motor 5 is connected with the import of exhaust purifier 6; Exhaust purifier 6 can filter out the most of particulate matter in the engine exhaust; Help reducing the incrustation in the pipeline, the outlet of exhaust purifier 6 is connected with the outer chamber import 15 of adsorption tanks 8, and the top exit of LNG tank 1 is connected with the inner chamber body import 16 of adsorption tanks 8 through gas storage valve 9; Gas storage valve 9 is an one-way valve; Switching can manually be controlled or controlled automatically by both sides pressure reduction, and the inner chamber body outlet 14 of adsorption tanks 8 is connected with the gas-entered passageway of motor 5 through steam supply valve 7, and steam supply valve 7 is identical with the type of gas storage valve 9.
With reference to Fig. 2, described adsorption tanks 8, outward appearance is cylindrical; Be the aluminum alloy double-layer structure, adsorption tanks shell 10 and the interior logical engine exhaust of the cavity of adsorption tanks inner casing 11 formations are clogged acticarbon 12 in the cavity that adsorption tanks inner casing 11 constitutes; Acticarbon 12 can adsorb and desorption rock gas repeatedly, and acticarbon 12 is fixing by filter plate 13, and the inner chamber body import 16 of adsorption tanks 8 is communicated with inner chamber body outlet 14; Outer chamber import 15 is communicated with outer chamber outlet 17; Filter plate 13 is made up of dividing plate and multilayer chain link fence, the fixing relative position of acticarbon 12 in adsorption tanks 8, and prevent that activated carbon granule from getting into gas pipeline; The natural gas temperature that gets into adsorption tanks 8 is lower, pressure is higher, and the natural gas temperature of leaving adsorption tanks 8 is higher, pressure is lower.
Working principle of the present invention is: utilize the characteristics that active carbon significantly strengthens the rock gas adsorptive power under the low temperature; When LNGV stops; The cryogenic natural gas of slowly vaporizing and producing with active carbon adsorption fuel; When driving, utilize the heat of engine high-temperature exhaust air that active carbon is carried out desorption, the natural gas supply of emitting is given motor.During parking; Partial liquefaction rock gas in the LNG tank 1 slowly is vaporized into cryogenic natural gas; After the pressure in the LNG tank 1 surpassed setting value, gas storage valve 9 was opened automatically, and the rock gas that temperature is lower, pressure is higher gets into adsorption tanks 8 through gas storage valve 9; Be adsorbed after acticarbon 12 contacts; Cryogenic natural gas carries out the inflation adsorptive process to 12 cooling actions of acticarbon at a lower temperature simultaneously, and the pressure in the adsorptive process in the adsorption tanks 8 continues to descend.During driving, fuel system has the two-way can air feed: the one, and the LNG Liquefied natural gas of low temperature gets into vaporizers 3 from LNG tank 1 through control valve 2, through the overflash rewarming, gets into decompressor 4 step-downs again, gets into motor 5 then; The 2nd, after the pressure in the adsorption tanks 8 surpassed setting value, steam supply valve 7 was opened automatically, and the rock gas that temperature is higher, pressure is lower gets into motor 5 through steam supply valve 7.The high-temperature exhaust air that motor 5 produces is through exhaust purifier 6; Get into the outer chamber import 15 of adsorption tanks 8; Arrange to external environment through the outer chamber outlet 17 of adsorption tanks 8 then; The heat of high-temperature exhaust air passes to acticarbon 12 through adsorption tanks inner casing 11, drives the venting desorption process, and the pressure in the desorption process in the adsorption tanks 8 continues to rise.
In the accompanying drawing: 1 is LNG tank; 2 is control valve; 3 is vaporizer; 4 is decompressor; 5 is motor; 6 is exhaust purifier; 7 is steam supply valve; 8 is adsorption tanks; 9 are the gas storage valve; 10 is the adsorption tanks shell; 11 is the adsorption tanks inner casing; 12 is acticarbon; 13 is filter plate; 14 are the inner chamber body outlet; 15 is the outer chamber import; 16 is the inner chamber body import; 17 are the outer chamber outlet.
Claims (2)
1. LNGV fuel system with adsorption tanks; Comprise LNG tank (1); It is characterized in that: the bottom outlet of LNG tank (1) is connected with the import of vaporizer (3) through control valve (2); The outlet of vaporizer (3) is connected with the import of decompressor (4); The outlet of decompressor (4) is connected with the gas-entered passageway of motor (5), and the exhaust passage of motor (5) is connected with the import of exhaust purifier (6), and the outlet of exhaust purifier (6) is connected with the outer chamber import (15) of adsorption tanks (8); The top exit of LNG tank (1) is connected with the inner chamber body import (16) of adsorption tanks (8) through gas storage valve (9), and the inner chamber body outlet (14) of adsorption tanks (8) is connected with the gas-entered passageway of motor (5) through steam supply valve (7).
2. a kind of LNGV fuel system according to claim 1 with adsorption tanks; It is characterized in that: described adsorption tanks (8); Outward appearance is cylindrical, is the aluminum alloy double-layer structure, adsorption tanks shell (10) and the interior logical engine exhaust of the cavity of adsorption tanks inner casing (11) formation; Fill acticarbon (12) in the cavity that adsorption tanks inner casing (11) constitutes; Acticarbon (12) is fixing by filter plate (13), and the inner chamber body import (16) of adsorption tanks (8) and inner chamber body outlet (14) are communicated with, and outer chamber import (15) and outer chamber outlet (17) are communicated with.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110455612.6A CN102536519B (en) | 2011-12-30 | 2011-12-30 | Liquefied natural gas automobile fuel system with adsorption tank |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201110455612.6A CN102536519B (en) | 2011-12-30 | 2011-12-30 | Liquefied natural gas automobile fuel system with adsorption tank |
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| CN102536519A true CN102536519A (en) | 2012-07-04 |
| CN102536519B CN102536519B (en) | 2014-04-23 |
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| CN201110455612.6A Expired - Fee Related CN102536519B (en) | 2011-12-30 | 2011-12-30 | Liquefied natural gas automobile fuel system with adsorption tank |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103133864A (en) * | 2013-02-06 | 2013-06-05 | 徐毅 | Adsorbed natural gas (ANG) and liquefied natural gas (LNG) double-fuel gas supply system |
| CN104033729A (en) * | 2014-06-21 | 2014-09-10 | 刘印同 | Pressure stabilizing device and method for vehicle-mounted liquefied gas cylinder |
| CN106641699A (en) * | 2015-10-30 | 2017-05-10 | 现代自动车株式会社 | Fuel filling apparatus and method for bi-fuel vehicle |
| CN107433132A (en) * | 2017-09-06 | 2017-12-05 | 哈尔滨工程大学 | A kind of boat diesel engine tail gas nitrogen oxide removing means and removal methods |
| CN111649229A (en) * | 2019-03-25 | 2020-09-11 | 沪东中华造船(集团)有限公司 | LNG filling vessel filling system and LNG filling vessel cabin pressure control method |
| CN113586292A (en) * | 2021-07-07 | 2021-11-02 | 湖北汉瑞景汽车智能系统有限公司 | Gas pressure stabilizing and adjusting system and adjusting method thereof |
| CN113669621A (en) * | 2021-08-17 | 2021-11-19 | 北京福田戴姆勒汽车有限公司 | Liquefied natural gas recovery control system and vehicle |
| RU2781731C1 (en) * | 2022-02-14 | 2022-10-17 | Федеральное государственное бюджетное учреждение науки Институт физической химии и электрохимии им. А.Н. Фрумкина Российской академии наук (ИФХЭ РАН) | Adsorption system of reversible accumulation of vapors of liquefied natural gas |
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- 2011-12-30 CN CN201110455612.6A patent/CN102536519B/en not_active Expired - Fee Related
Patent Citations (7)
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| JPS56544A (en) * | 1979-06-15 | 1981-01-07 | Nippon Soken Inc | Preventing device for evaporation of fuel for automobile |
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Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103133864A (en) * | 2013-02-06 | 2013-06-05 | 徐毅 | Adsorbed natural gas (ANG) and liquefied natural gas (LNG) double-fuel gas supply system |
| CN104033729A (en) * | 2014-06-21 | 2014-09-10 | 刘印同 | Pressure stabilizing device and method for vehicle-mounted liquefied gas cylinder |
| CN104033729B (en) * | 2014-06-21 | 2016-03-09 | 刘印同 | Vehicle-mounted liquefied gas bottle stable-pressure device and method for stabilizing voltage thereof |
| CN106641699A (en) * | 2015-10-30 | 2017-05-10 | 现代自动车株式会社 | Fuel filling apparatus and method for bi-fuel vehicle |
| CN107433132A (en) * | 2017-09-06 | 2017-12-05 | 哈尔滨工程大学 | A kind of boat diesel engine tail gas nitrogen oxide removing means and removal methods |
| CN107433132B (en) * | 2017-09-06 | 2020-09-25 | 哈尔滨工程大学 | Device and method for removing nitrogen oxides in tail gas of marine diesel engine |
| CN111649229A (en) * | 2019-03-25 | 2020-09-11 | 沪东中华造船(集团)有限公司 | LNG filling vessel filling system and LNG filling vessel cabin pressure control method |
| CN113586292A (en) * | 2021-07-07 | 2021-11-02 | 湖北汉瑞景汽车智能系统有限公司 | Gas pressure stabilizing and adjusting system and adjusting method thereof |
| CN113669621A (en) * | 2021-08-17 | 2021-11-19 | 北京福田戴姆勒汽车有限公司 | Liquefied natural gas recovery control system and vehicle |
| RU2781731C1 (en) * | 2022-02-14 | 2022-10-17 | Федеральное государственное бюджетное учреждение науки Институт физической химии и электрохимии им. А.Н. Фрумкина Российской академии наук (ИФХЭ РАН) | Adsorption system of reversible accumulation of vapors of liquefied natural gas |
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| CN102536519B (en) | 2014-04-23 |
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