CN104929813A - LNG storage and supply system for forklift - Google Patents
LNG storage and supply system for forklift Download PDFInfo
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- CN104929813A CN104929813A CN201510349827.8A CN201510349827A CN104929813A CN 104929813 A CN104929813 A CN 104929813A CN 201510349827 A CN201510349827 A CN 201510349827A CN 104929813 A CN104929813 A CN 104929813A
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- lng
- steel cylinder
- supply system
- vaporizer
- air supply
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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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- Filling Or Discharging Of Gas Storage Vessels (AREA)
Abstract
The invention relates to an LNG storage and supply system for a forklift. The LNG storage and supply system aims to meet the use requirements of the forklift to guarantee that LNG is stored and used safely and reliably on the forklift. According to the technical scheme, the center of one end of an LNG steel bottle of a gas storage system is provided with a connector, a cylinder type shield is arranged outside the connector, one end of the shield is fixed to the LNG steel bottle, and the other end of the shield provided with a cover plate; a liquid feed pipe, a liquid discharge pipe and an emptying pipe communicated with the connector are arranged in the shield and between the cover plate and the steel bottle; the portion, below the connector, of the LNG steel bottle is communicated with the connector through a self-boosting pipe; a gas supply system comprises a vaporizer shell and a spiral fuel gas pipe arranged in the shell, one end of the fuel gas pipe is connected with a liquid inlet, the other end of the fuel gas pipe is connected with a vaporizer fuel gas outlet, the two ends of the vaporizer shell are connected with a water inlet and a water outlet respectively, the vaporizer fuel gas outlet is connected with a gas supply pipe, and the gas supply pipe is provided with a pressure stabilizer; a connection pipe is communicated with the liquid discharge pipe of the gas storage system and the liquid inlet of the gas supply system.
Description
Technical field
The present invention relates to a kind of fork truck LNG and store up air supply system.The diesel fork lift truck that to be applicable to LNG (LNG Liquefied natural gas) be power.
Background technique
LNG is the abbreviation of LNG Liquefied natural gas, be normal temperature gaseous natural gas compressed, be cooled to its freezing point (-161.5 DEG C) temperature after become liquid.Because LNG has ultralow temperature and high pressure harm, and inflammable, explosive, once leak, there is larger potential safety hazard, therefore when applying on fork truck, LNG stores safely and reliably, use and seem particularly important.Based on the characteristic of LNG, LNG must with the storage of special LNG steel cylinder, and has to pass through vaporization, is heated to normal temperature, after decompression transfer is changed to normal temperature gaseous natural gas, could meet the usage requirement of internal-combustion engine on fork truck.
Summary of the invention
The technical problem to be solved in the present invention is: for above-mentioned Problems existing, and the fork truck LNG providing a kind of structure simple, easy to operate stores up air supply system, to meet fork truck usage requirement, guarantees that LNG safely, reliably stores and uses on fork truck.
The technical solution adopted in the present invention is: a kind of fork truck LNG stores up air supply system, it is characterized in that: comprise gas storage system and air supply system and connecting pipeline;
Described gas storage system comprises LNG steel cylinder, central position, LNG steel cylinder one end is shaped with connection interface, a circle cartridge type guard shield is provided with outside connection interface, LNG steel cylinder is fixed in this guard shield one end, the other end arranges cover plate, in described guard shield, be provided with the liquid feeding pipeline, fluid pipeline and the emptying pipeline that are communicated with connection interface between cover plate with steel cylinder, the connection interface lower position of described LNG steel cylinder is through being communicated with connection interface from pressure piping;
Described air supply system comprises vaporizer shell, and the helical fuel gas pipeline be placed in housing, fuel gas pipeline one end is connected to liquid entering hole, another termination vaporizer gas outlet, water intake and water outlet is connected to respectively at vaporizer shell two ends, vaporizer gas outlet connects supply air line, and supply air line is provided with voltage stabilizer;
Described connecting pipeline is communicated with the fluid pipeline of gas storage system and the liquid entering hole of air supply system.
Described liquid feeding pipeline comprises filling opening, LNG feed liquor flexible pipe and feed liquor one-way valve, and filling opening is fixed on guard shield outer wall bottom through filling opening support, and this filling opening is connected the connection interface of LNG steel cylinder with feed liquor one-way valve through LNG feed liquor flexible pipe.
Described fluid pipeline is provided with LNG fluid stop valve and fluid one-way valve.
Described emptying pipeline comprises gas returning port, vent stop valve, main safety valve and secondary safety valve, wherein main safety valve and secondary safety valve are communicated with the connection interface of LNG steel cylinder respectively by the road, described gas returning port is fixed on guard shield outer wall through mounting bracket, and this gas returning port is through the connection interface of emptying connecting tube, vent stop valve connection LNG steel cylinder.
Describedly comprise pressure inlet, pressure regulator valve and from pressurization system stop valve from pressure piping, described pressure inlet one end connects the connection interface lower position of LNG steel cylinder, be communicated with LNG steel cylinder, the other end is communicated with the connection interface of LNG steel cylinder, wherein pressure inlet is equipped with from pressurization system stop valve and pressure regulator valve, pressure inlet is arranged along LNG steel cylinder lower edge, and welds some heat transmission fins thereon.
Described LNG steel cylinder level frame is on steel cylinder erection support, and steel cylinder erection support fixes steel cylinder by mount cable-tie, LNG steel cylinder and arrange cushion pad between steel cylinder erection support and mount cable-tie.
Described LNG steel cylinder bottom is provided with the backplate of a circle for the protection of pressure inlet and connecting pipeline, and backplate has some apertures, described backplate is mounted on steel cylinder erection support.
Described vaporizer shell upper surface is shaped with vaporizer filler, and vaporizer filler is furnished with plug; Vaporizer shell lower surface is shaped with vaporizer sewage draining exit, and is furnished with block head.
Described vaporizer shell has the fixed support of two door types along its axial restraint, described supply air line upwards bends after-frame on two fixed supports by vaporizer gas outlet, and described voltage stabilizer is installed on the supply air line between two fixed supports.
Described connecting pipeline adopts copper pipe or Stainless Steel Flexible Hose to connect; According to copper pipe, be then designed to calibration tube, and adopt O type to design.
The invention has the beneficial effects as follows: the present invention accurately arranges the mounting point of gas storage system and air supply system, install compact, do not exceed fork truck external frame, and facilitate hood to open completely.Band safety cover of the present invention and cover plate, effectively protect parts such as the valve on LNG steel cylinder, pipeline, instrument, prevents pipeline leaked by extraneous damage and LNG and damage people, safe and reliable.The cooling liquid heating gas pipeline that the present invention draws from motor short circle, improves energy utilization rate.
Accompanying drawing explanation
Fig. 1 is the plan view (without cover plate) of embodiment.
Fig. 2 is the left view of embodiment.
Fig. 3 is the right elevation of embodiment.
Embodiment
As shown in FIG. 1 to 3, the present embodiment is that a kind of fork truck LNG stores up air supply system, is made up of gas storage system and air supply system and erection support, connecting pipeline 2 and protective housing etc.
In this example, gas storage system comprises LNG steel cylinder 1, and this steel cylinder comprises steel cylinder shell 1-10, thermal insulation layer 1-11 and steel cylinder inner bag 1-12.LNG steel cylinder 1 level frame is on two steel cylinder erection supports 6, and steel cylinder erection support 6 coordinates high-strength bolt to fix steel cylinder, LNG steel cylinder 1 and arrange cushion pad 1-18 between steel cylinder erection support 6 and mount cable-tie 1-19 by mount cable-tie 1-19.
The connection interface 1-23 be communicated with steel cylinder inner bag 1-12 is shaped with in the central position of LNG steel cylinder 1 one end.Be provided with a circle cartridge type guard shield 1-4 outside connection interface 1-23, LNG steel cylinder 1 is fixed in this guard shield one end, and the other end arranges cover plate 1-3.In guard shield 1-4, cover plate 1-3 be provided with the liquid feeding pipeline, fluid pipeline and the emptying pipeline that are communicated with connection interface 1-23 between steel cylinder, on LNG steel cylinder 1, connection interface 1-23 lower position is through being communicated with connection interface 1-23 from pressure piping.
Liquid feeding pipeline comprises filling opening 1-7, LNG feed liquor flexible pipe 1-2 and feed liquor one-way valve 1-16, wherein filling opening 1-7 is fixed on guard shield 1-4 outer wall bottom through filling opening support 1-21, position height is suitable, be convenient to filling operation, filling opening 1-7 is connected the connection interface 1-23 of LNG steel cylinder 1 with feed liquor one-way valve 1-16 through LNG feed liquor flexible pipe 1-2.Fluid pipeline is provided with LNG fluid stop valve 1-1 and fluid one-way valve 1-15.Emptying pipeline comprises gas returning port 1-5, vent stop valve 1-8, main safety valve 1-13 and secondary safety valve 1-14, wherein main safety valve 1-13 and secondary safety valve 1-14 are communicated with the connection interface 1-23 of LNG steel cylinder 1 respectively by the road, gas returning port 1-5 is fixed on guard shield 1-4 outer wall through mounting bracket 1-22, and this gas returning port is through the connection interface 1-23 of emptying connecting tube, vent stop valve 1-8 connection LNG steel cylinder 1.Pressure inlet 1-9, pressure regulator valve 1-17 is comprised and from pressurization system stop valve 1-20 from pressure piping, wherein pressure inlet 1-9 one end connects the connection interface 1-23 lower position of LNG steel cylinder 1, be communicated with steel cylinder inner bag 1-12, the other end connects the connection interface 1-23 of LNG steel cylinder 1.Pressure inlet 1-9 is equipped with from pressurization system stop valve 1-20 and pressure regulator valve 1-17, this pressure inlet is arranged along LNG steel cylinder 1 lower edge, and welds some heat transmission fins thereon.
LNG steel cylinder 1 steel cylinder erection support 6 supports, and fixes with mount cable-tie 1-19, in order to prevent the impact vibrated steel cylinder and pipeline and valve, between LNG steel cylinder 1 and steel cylinder erection support 6 and mount cable-tie 1-19, arranges cushion pad 1-18.
In the present embodiment, air supply system comprises vaporizer shell 3-2, vaporizer shell 3-2 has the fixed support 3-11 of two door types along its axial restraint.Housing is built-in with helical fuel gas pipeline 3-3, and fuel gas pipeline 3-3 one end meets liquid entering hole 3-1, another termination vaporizer gas outlet 3-9.Water intake 3-8 and water outlet 3-5 is connected to respectively at vaporizer shell two ends, vaporizer gas outlet 3-9 connects supply air line 3-10, supply air line 3-10 upwards bends and is supported on two fixed support 3-11, and the supply air line 3-10 between two fixed support 3-11 is provided with voltage stabilizer 3-7.This example is shaped with vaporizer filler 3-6 at vaporizer shell 3-2 upper surface, and vaporizer filler 3-6 is furnished with plug; Vaporizer shell lower surface is shaped with vaporizer sewage draining exit 3-4, and is furnished with block head.
In the present embodiment, the fluid pipeline of gas storage system is communicated with through connecting pipeline 2 with the liquid entering hole 3-1 of air supply system.Connecting pipeline 2 adopts copper pipe or Stainless Steel Flexible Hose to connect, and according to copper pipe, will be designed to qualitative pipe as required, and adopt O type to design, and avoids vibrating the impact on copper pipe.
In the present embodiment, gas storage system and air supply system one are reinstated high-strength bolt and are arranged in steel cylinder mounting base 6; the backplate 7 of a circle for the protection of pressure inlet 1-9 and connecting pipeline 2 is provided with in LNG steel cylinder 1 bottom; backplate 7 has some apertures; do not affect the air exchange in guard shield; thus do not affect the work from pressure piping of LNG steel cylinder 1; but the effect can played pipeline safety protection, backplate 7 is mounted on steel cylinder erection support 6.
In the present embodiment, gas storage system meets following requirement: a.LNG steel cylinder 1 capacity is large, meets the usage requirement of fork truck, and meets relevant criterion certification; B. compact structure, does not exceed fork truck external frame after installation; C. be with safety cover 1-4 and cover plate 1-3, the parts such as the valve on LNG steel cylinder, pipeline, instrument are effectively protected, prevent pipeline leaked by extraneous damage and LNG and people is damaged; D. filling opening 1-7 position suitable, facilitates liquid feeding.
In this example, air supply system meets following requirement: a. vaporizer shell 3-2 capacity is large, meets the engine cold-start requirement of fork truck; B. compact structure, meets the installation requirement of fork truck; C. voltage stabilizer can regulate pressure voluntarily.
The specific works principle of the present embodiment is as follows:
1, topping up: extract the dust cover on filling opening 1-7, is connected liquid feeding rifle with filling opening 1-7, and LNG is flowed into by filling opening 1-7, through feed liquor one-way valve 1-16, enters in steel cylinder inner bag;
2, store: after LNG enters steel cylinder inner bag, carry out heat-insulation and heat-preservation by thermal insulation layer to it, the LNG temperature maintained in steel cylinder is about-165 DEG C as far as possible.But heat insulation can not fully and completely, along with the passing of memory time, the temperature of the LNG in steel cylinder can rise, and part LNG can vaporize, and the pressure of steel cylinder inner bag can progressively rise, and when being raised to certain value atmospherically, the main safety valve 1-13 on steel cylinder can open emptying; When pressure sharply rises to a certain value, the secondary safety valve 1-14 on steel cylinder also can open emptying;
3, air feed: a. opens LNG fluid stop valve 1-1, (pressure is 1 ~ 1.59MPa about for LNG,-165 DEG C) flow into fluid one-way valve 1-15, flow into from liquid entering hole 3-1 the fuel gas pipeline 3-3 be immersed in cooling liquid through connecting pipeline 2, by absorbing the heat of cooling liquid, be converted to normal temperature gaseous natural gas (pressure is 1 ~ 1.59MPa about, 20 DEG C); Flow to voltage stabilizer 3-7 again and be decompressed to pressure needed for motor, then used to motor by gaseous natural gas outlet 13 supply; B. from the cooling liquid that motor short circle is drawn, entered in vaporizer assemblies 3-2 by water intake 3-8, then from water outlet 3-5 return engine short circle cooling line, in its cyclic process, its heat is passed to fuel gas pipeline 3-3, thus LNG is heated and is vaporized; (note: voltage stabilizer pressure adjustable saves, main engine factory can pressure needed for motor from Row sum-equal matrix)
4, vaporizer shell 3-2 adds water and gets rid of dirt: a. backs out the block head on vaporizer sewage draining exit 3-4, can get rid of the impurity in vaporizer shell 3-2; B. turn on the plug on the 3-6 of vaporizer filler, can add water to vaporizer assemblies 3-2.
Claims (10)
1. fork truck LNG stores up an air supply system, it is characterized in that: comprise gas storage system, air supply system and connecting pipeline (2);
Described gas storage system comprises LNG steel cylinder (1), central position, LNG steel cylinder one end is shaped with connection interface (1-23), a circle cartridge type guard shield (1-4) is provided with outside connection interface, LNG steel cylinder (1) is fixed in this guard shield one end, the other end arranges cover plate (1-3), in described guard shield, be provided with the liquid feeding pipeline, fluid pipeline and the emptying pipeline that are communicated with connection interface (1-23) between cover plate with steel cylinder, the connection interface lower position of described LNG steel cylinder (1) is through being communicated with connection interface from pressure piping;
Described air supply system comprises vaporizer shell (3-2), and the helical fuel gas pipeline (3-3) be placed in housing, fuel gas pipeline (3-3) one end is connected to liquid entering hole (3-1), another termination vaporizer gas outlet (3-9), water intake (3-8) and water outlet (3-5) is connected to respectively at vaporizer shell two ends, vaporizer gas outlet (3-9) connects supply air line (3-10), supply air line (3-10) is provided with voltage stabilizer (3-7);
Described connecting pipeline (2) is communicated with the fluid pipeline of gas storage system and the liquid entering hole (3-1) of air supply system.
2. fork truck LNG according to claim 1 stores up air supply system, it is characterized in that: described liquid feeding pipeline comprises filling opening (1-7), LNG feed liquor flexible pipe (1-2) and feed liquor one-way valve (1-16), filling opening (1-7) is fixed on guard shield (1-4) outer wall bottom through filling opening support (1-21), and this filling opening is connected the connection interface (1-23) of LNG steel cylinder (1) with feed liquor one-way valve (1-16) through LNG feed liquor flexible pipe (1-2).
3. fork truck LNG according to claim 1 stores up air supply system, it is characterized in that: described fluid pipeline is provided with LNG fluid stop valve (1-1) and fluid one-way valve (1-15).
4. fork truck LNG according to claim 1 stores up air supply system, it is characterized in that: described emptying pipeline comprises gas returning port (1-5), vent stop valve (1-8), main safety valve (1-13) and secondary safety valve (1-14), wherein main safety valve (1-13) and secondary safety valve (1-14) are communicated with the connection interface (1-23) of LNG steel cylinder (1) respectively by the road, described gas returning port (1-5) is fixed on guard shield (1-4) outer wall through mounting bracket (1-22), this gas returning port is through emptying connecting tube, vent stop valve (1-8) is communicated with the connection interface (1-23) of LNG steel cylinder (1).
5. fork truck LNG according to claim 1 stores up air supply system, it is characterized in that: describedly comprise pressure inlet (1-9) from pressure piping, pressure regulator valve (1-17) and from pressurization system stop valve (1-20), described pressure inlet (1-9) one end connects connection interface (1-23) lower position of LNG steel cylinder (1), be communicated with LNG steel cylinder (1), the other end is communicated with the connection interface (1-23) of LNG steel cylinder (1), wherein pressure inlet (1-9) is equipped with from pressurization system stop valve (1-20) and pressure regulator valve (1-17), pressure inlet (1-9) is arranged along LNG steel cylinder (1) lower edge, and weld some heat transmission fins thereon.
6. the fork truck LNG according to Claims 1 to 5 any one stores up air supply system, it is characterized in that: described LNG steel cylinder (1) level frame is on steel cylinder erection support (6), steel cylinder erection support (6) by the fixing steel cylinder of mount cable-tie (1-19), LNG steel cylinder (1) and between steel cylinder erection support (6) and mount cable-tie (1-19), cushion pad (1-18) is set.
7. fork truck LNG according to claim 6 stores up air supply system; it is characterized in that: described LNG steel cylinder (1) bottom is provided with the backplate (7) of a circle for the protection of pressure inlet (1-9) and connecting pipeline (2); (7) have some apertures with backplate, and described backplate (7) is mounted on steel cylinder erection support (6).
8. fork truck LNG according to claim 1 stores up air supply system, it is characterized in that: described vaporizer shell (3-2) upper surface is shaped with vaporizer filler (3-6), and vaporizer filler (3-6) is furnished with plug; Vaporizer shell lower surface is shaped with vaporizer sewage draining exit (3-4), and is furnished with block head.
9. fork truck LNG according to claim 8 stores up air supply system, it is characterized in that: the fixed support (3-11) described vaporizer shell (3-2) having two door types along its axial restraint, described supply air line (3-10) upwards bends after-frame on two fixed supports (3-11) by vaporizer gas outlet (3-9), and described voltage stabilizer (3-7) is installed on the supply air line (3-10) between two fixed supports (3-11).
10. fork truck LNG according to claim 1 stores up air supply system, it is characterized in that: described connecting pipeline (2) adopts copper pipe or Stainless Steel Flexible Hose to connect; According to copper pipe, be then designed to calibration tube, and adopt O type to design.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510349827.8A CN104929813B (en) | 2015-06-23 | 2015-06-23 | Fork truck stores up air supply system with LNG |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510349827.8A CN104929813B (en) | 2015-06-23 | 2015-06-23 | Fork truck stores up air supply system with LNG |
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| Publication Number | Publication Date |
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| CN104929813A true CN104929813A (en) | 2015-09-23 |
| CN104929813B CN104929813B (en) | 2018-03-16 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201510349827.8A Active CN104929813B (en) | 2015-06-23 | 2015-06-23 | Fork truck stores up air supply system with LNG |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106609906A (en) * | 2015-10-24 | 2017-05-03 | 河北斯玛特深冷技术有限公司 | Novel LNG vehicle-mounted cylinder |
| CN112810432A (en) * | 2021-01-11 | 2021-05-18 | 东风汽车股份有限公司 | Integrated fuel supply device of light LNG (liquefied Natural gas) commercial vehicle |
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| Publication number | Publication date |
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| CN104929813B (en) | 2018-03-16 |
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