CN203082531U - ANG (absorption natural gas) and LNG (liquefied natural gas) dual-fuel gas supply system - Google Patents

ANG (absorption natural gas) and LNG (liquefied natural gas) dual-fuel gas supply system Download PDF

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CN203082531U
CN203082531U CN 201320069537 CN201320069537U CN203082531U CN 203082531 U CN203082531 U CN 203082531U CN 201320069537 CN201320069537 CN 201320069537 CN 201320069537 U CN201320069537 U CN 201320069537U CN 203082531 U CN203082531 U CN 203082531U
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ang
lng
gas
valve
gas cylinder
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徐毅
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徐毅
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Abstract

The utility model discloses an ANG (absorption natural gas) and LNG (liquefied natural gas) dual-fuel gas supply system which comprises an ANG gas bottle, an LNG gas bottle and an evaporation bottle, wherein the ANG gas bottle is provided with a pressure meter, an ANG safety valve, a temperature meter and an ANG outlet valve; the ANG gas bottle is internally provided with an ANG absorption agent which is internally provided with a heat exchange pipe; a bottle wall sandwich layer of the ANG gas bottle is internally provided with a heating pipe; a gas discharge pipe of the ANG gas bottle is connected with an ANG flow rate valve in series; the LNG gas bottle is provided with an LNG safety valve, a liquidometer, an LNG inlet valve and an LNG outlet valve; the gas discharge pipe of the LNG gas bottle is sequentially connected with the evaporation bottle and the LNG flow rate valve, and then is connected with the gas discharge end of the LNG flow rate valve. According to the system, the ANG and the LNG are supplied in parallel, the advantages of two kinds of natural gases are developed fully, and the natural gases are comprehensively utilized; and the ANG and LNG dual-fuel gas supply system provided by the utility model is used for supplying fuel for conveying vehicles, and can improve the once cruising power of vehicles, and the conveying cost can be lowered.

Description

ANG and LNG double fuel air supply system
Technical field
The utility model relates to a kind of air supply system, relates in particular to a kind of ANG and LNG double fuel air supply system.
Background technique
In recent years, along with the quick consumption of oil and coal, rock gas (main nail alkane) has begun progressively industrialization as power fuel.At present rock gas is done power fuel and is mainly contained three kinds of modes: compressed natural gas (CNG), LNG Liquefied natural gas (LNG) and absorbed natural gas (ANG).CNG gas storage pressure height (20-25 MPa) needs expensive multistage compressor, and energy consumption is big, and reservoir vessel needs high pressure resistant, from great, has certain risk.LNG Safety performance height, flying power is strong, but needs cryogenic refrigeration, the energy consumption height, the maintaining of gas storage facility is complicated, liquefaction process complexity, disposable input cost height.ANG pressure is low, and the normal temperature accumulating is safe and reliable, the flying power excellence, but need to add sorbent, increase deadweight, desorption rate is non-constant.Therefore, maximize favourable factors and minimize unfavourable ones, the comprehensive utilization rock gas is an effective way.
The model utility content
The purpose of this utility model provides a kind of ANG and LNG double fuel air supply system with regard to being in order to address the above problem.
The utility model is achieved through the following technical solutions above-mentioned purpose:
ANG described in the utility model and LNG double fuel air supply system comprise the ANG gas cylinder, LNG gas cylinder and evaporative flask, described ANG gas cylinder is provided with pressure gauge, the ANG safety valve, thermometer and ANG outlet valve, be provided with the ANG sorbent in the described ANG gas cylinder, be provided with heat exchanging tube in the described ANG sorbent, be provided with heating pipe in the bottle wall interlayer of described ANG gas cylinder, the steam outlet pipe series connection ANG Flow valve of described ANG gas cylinder, described LNG gas cylinder is provided with the LNG safety valve, level meter, LNG inlet valve and LNG outlet valve, the steam outlet pipe of described LNG gas cylinder are connected successively and are connected with the outlet side of described ANG Flow valve behind described evaporative flask and the LNG Flow valve.
ANG gas cylinder, pressure gauge, ANG safety valve, thermometer, ANG outlet valve, ANG sorbent, heat exchanging tube, heating pipe and ANG Flow valve constitute the ANG air supply system; LNG gas cylinder, LNG safety valve, level meter, LNG inlet valve, LNG outlet valve and evaporative flask constitute the LNG air supply system.ANG air supply system and LNG air supply system are in parallel to form two air supply systems, and by the conversion between ANG outlet valve and two air supply systems of LNG outlet valve realization, is realized the adjusting of air demand by ANG Flow valve and LNG Flow valve.
When adopting air supply system of the present utility model to be the haulage vehicle air feed, when short distance transportation or road conditions are good, can preferentially select the ANG air supply system, promptly close the LNG outlet valve, open the ANG outlet valve, the ANG Flow valve is regulated in rock gas desorb from the ANG sorbent, ANG is delivered to the internal-combustion engine of vehicle, work by combustion; When long-distance transport or ANG desorption quantity are not enough, start LNG air supply system in parallel, promptly open the LNG outlet valve, LNG is vaporized into steam through evaporative flask, regulates the LNG Flow valve, and an amount of rock gas is delivered to the internal-combustion engine of vehicle, work by combustion.
Particularly, described heat exchanging tube is phase-transition heat-storage rod or the metal tube that is provided with external interface.During phase-transition heat-storage rod that employing is made by phase-change material, when resolving, ANG can be released in absorbing accumulated heat when filling ANG automatically, be convenient to keep in the ANG gas cylinder temperature, keep resolution speed, it has advantage simple in structure, easy to operate, with low cost; When adopting metal tube, can external hot gas or hot water as thermal source, with keep in the ANG gas cylinder temperature, keep resolution speed, can utilize existing resource such as vehicle exhaust that heat is provided.
The beneficial effects of the utility model are:
The utility model adopts ANG and LNG air feed in parallel, gives full play to the advantage of two kinds of rock gases, realizes the comprehensive utilization of rock gas; The utility model is used for the fuel gas supply of haulage vehicle, can improves a flying power of vehicle, reduce cost of transportation.
Description of drawings
Fig. 1 is the perspective structure schematic representation of ANG described in the utility model and LNG double fuel air supply system.
Embodiment
The utility model is described in further detail below in conjunction with accompanying drawing:
As shown in Figure 1, ANG described in the utility model and LNG double fuel air supply system comprise ANG gas cylinder 1, LNG gas cylinder 7 and evaporative flask 15, ANG gas cylinder 1 is provided with pressure gauge 8, ANG safety valve 9, thermometer 10 and ANG outlet valve 11, be provided with ANG sorbent 2 in the ANG gas cylinder 1, be provided with heat exchanging tube 3 in the ANG sorbent 2, be provided with heating pipe 4 in the bottle wall interlayer of ANG gas cylinder 1, the steam outlet pipe series connection ANG Flow valve 12 of ANG gas cylinder 1, LNG gas cylinder 7 is provided with LNG safety valve 5, level meter 6, LNG inlet valve 13 and LNG outlet valve 14, the steam outlet pipe of LNG gas cylinder 7 cascade evaporation bottle 15 successively are connected with the outlet side of ANG Flow valve 12 with LNG Flow valve 16 backs; Heat exchanging tube 3 is phase-transition heat-storage rod or the metal tube that is provided with external interface.
In the said structure, ANG gas cylinder 1 can bear the pressurized container of 3.5MPa, carbon steel material such as its material includes but are not limited to 20, Q235;
ANG sorbent 2 is the big porous material of specific surface area, includes but are not limited to active carbon, petroleum coke etc.;
Heat exchanging tube 3 in the ANG gas cylinder 1 is the standard metal pipe, and its shape includes but are not limited to coiler, U type pipe, tubulation etc.; Perhaps, heat exchanging tube 3 is the phase-transition heat-storage rod, and its material includes but are not limited to inorganic phase-changing material, organic phase change material, composite phase-change material etc.;
Heating pipe 4 in ANG gas cylinder 1 interlayer is common heating element, and its material can be stainless steel, copper, alloy etc.;
Thermometer 10 and pressure gauge 8 are conventional standard piece;
ANG safety valve 9 and LNG safety valve 5 are the standard security valve, can be for complete opening type and partly open formula;
ANG outlet valve 11, LNG inlet valve 13, LNG outlet valve 14, ANG Flow valve 12 and LNG Flow valve 16 are the standard valve member, and its structure can be stopcock, ball valve, butterfly valve etc.;
Level meter 6 is a standard piece, and its structure can be glass-tube liquid level meter, floating ball lever meter etc.;
LNG gas cylinder 7 is the vacuum and low temperature normal pressure container, and temperature is-162 ℃ in the bottle, adopts the mode of laminated vacuum wound insulation, and its material includes but are not limited to chrome-nickel, chromium nickel-manganese, austenite Low temperature steel etc.;
Evaporative flask 15 is the mesohigh container, in establish heat exchanging tube, be thermal source with the hot water of vehicle water tank, and make LNG be vaporized into steam after the LNG heat exchange, steel material such as its material includes but are not limited to 20,20R, 16Mn, Q235.
First characteristics of the present utility model are that employing ANG and LNG double fuel air supply system fully utilize rock gas, satisfy the motor vehicle fuel supply under the multiple condition, further improve a flying power of vehicle.
Second characteristic of the present utility model are when road conditions is good, can preferentially adopt the ANG air supply system, the low-cost transportation of realization.
The 3rd characteristics of the present utility model are, being short of power or ANG desorption rate when slow, can open the LNG air supply system simultaneously, strengthen air demand, improve vehicle power.
The 4th characteristics of the present utility model are to be equipped with safety valve on ANG gas cylinder 1, LNG gas cylinder 7 and evaporative flask 15, the Safety performance of raising device.
The 5th characteristics of the present utility model are, when the desorption rate of ANG gas cylinder 1 reduces, can heat, method such as inner heating improves adsorbent temperature by interlayer, thus the assurance desorption rate.
The 6th characteristics of the present utility model are that the hot water of vehicle water tank not only can be used for the thermal source of heat exchange in the ANG gas cylinder 1, can also realize making full use of of heat as the heat exchange thermal source of evaporative flask 15.
The 7th characteristics of the present utility model are, the heat-exchanging element of ANG gas cylinder inside can adopt the phase-transition heat-storage rod, and the phase transformation by material realizes accumulating and discharging of heat, and is simple in structure, easy to operate, with low cost.
In conjunction with Fig. 1, being applied to carrier with ANG described in the utility model and LNG double fuel air supply system below is example, is specifically described in conjunction with several embodiments:
Embodiment 1:
Choose active carbon as ANG sorbent 2, being pre-filled in 20 carbon steels is the inside of the ANG gas cylinder 1 of material; The phase-transition heat-storage rod that the heat exchanging tube 3 of ANG gas cylinder 1 inside adopts phase-change material to make, phase-change material is chosen inorganic calcium chloride hexahydrate; The material of LNG gas cylinder 1 is a chrome-nickel, and the material of evaporative flask 15 is 16Mn.
Application process is as follows:
When the level road section is travelled, select the ANG air supply system for use, open ANG outlet valve 11, regulate ANG Flow valve 12, the internal-combustion engine 17(internal-combustion engine 17 that rock gas is delivered to automobile is bi-fuel internal combustion engine, can satisfy absorbed natural gas simultaneously and work by combustion demand LNG Liquefied natural gas) work by combustion;
When travelling to the highway section, ramp, when the vehicle air feed is not enough, open the LNG air supply system by control panel, open LNG outlet valve 14, regulate LNG Flow valve 16, LNG Liquefied natural gas LNG delivers to internal-combustion engine 17 work by combustion after evaporative flask 15 heat exchange evaporation gasification.
Embodiment 2:
ANG sorbent 2 is a petroleum coke, and all the other are with embodiment 1.
Embodiment 3:
Phase-change material is organic high density polyethylene (HDPE), and all the other are with embodiment 1.
Embodiment 4:
Phase-change material is compound typing paraffin ball, and all the other are with embodiment 1.
Embodiment 5:
The heat exchanging tube 3 of ANG gas cylinder 1 inside adopts snakelike metal tube, and all the other are with embodiment 1.
Embodiment 6:
The material of LNG gas cylinder 1 is an inconel, and the material of evaporative flask 15 is 20R, and all the other are with embodiment 1.
The foregoing description is a preferred embodiment of the present utility model, does not limit claim of the present utility model, and all equivalence enforcement of the present utility model or change technological schemes of not breaking away from all should be included in the rights protection scope of the present utility model.
Need to prove at last, this ANG that the utility model proposes and LNG double fuel air supply system, except the internal-combustion engine air feed in vehicle, also can be used for occasions such as city gas air feed, residential quarter air feed, except doing work without internal-combustion engine, other structure is identical with such scheme with application process.

Claims (2)

1. ANG and LNG double fuel air supply system, it is characterized in that: comprise ANG gas cylinder (1), LNG gas cylinder (7) and evaporative flask (15), ANG gas cylinder (1) is provided with pressure gauge (8), ANG safety valve (9), thermometer (10) and ANG outlet valve (11), be provided with ANG sorbent (2) in the ANG gas cylinder (1), be provided with heat exchanging tube (3) in the ANG sorbent (2), be provided with heating pipe (4) in the bottle wall interlayer of ANG gas cylinder (1), the steam outlet pipe series connection ANG Flow valve (12) of ANG gas cylinder (1), LNG gas cylinder (7) is provided with LNG safety valve (5), level meter (6), LNG inlet valve (13) and LNG outlet valve (14), the steam outlet pipe of LNG gas cylinder (7) cascade evaporation bottle (15) successively are connected with the outlet side of ANG Flow valve (12) with LNG Flow valve (16) back.
2. ANG according to claim 1 and LNG double fuel air supply system is characterized in that: heat exchanging tube (3) is phase-transition heat-storage rod or the metal tube that is provided with external interface.
CN 201320069537 2013-02-06 2013-02-06 ANG (absorption natural gas) and LNG (liquefied natural gas) dual-fuel gas supply system Active CN203082531U (en)

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Application Number Priority Date Filing Date Title
CN 201320069537 CN203082531U (en) 2013-02-06 2013-02-06 ANG (absorption natural gas) and LNG (liquefied natural gas) dual-fuel gas supply system

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Cited By (2)

* Cited by examiner, † Cited by third party
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
CN105089857A (en) * 2015-07-22 2015-11-25 诸城福田汽车科技开发有限公司 LNG-CNG dual fuel power gas supply system and natural gas automobile

Cited By (2)

* Cited by examiner, † Cited by third party
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
CN105089857A (en) * 2015-07-22 2015-11-25 诸城福田汽车科技开发有限公司 LNG-CNG dual fuel power gas supply system and natural gas automobile

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Effective date of registration: 20200313

Granted publication date: 20130724