CN105443972B - Vehicular liquefied natural gas cylinder and the heavy truck - Google Patents

Vehicular liquefied natural gas cylinder and the heavy truck Download PDF

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Publication number
CN105443972B
CN105443972B CN201410415946.4A CN201410415946A CN105443972B CN 105443972 B CN105443972 B CN 105443972B CN 201410415946 A CN201410415946 A CN 201410415946A CN 105443972 B CN105443972 B CN 105443972B
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China
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support
sleeve
hole
gas cylinder
liner
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CN105443972A (en
Inventor
夏园园
唐永科
曹君
郭明亮
张碧博
刘彬彬
邱涛
杨帆
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XI'AN DESEN NEW ENERGY EQUIPMENT Co.,Ltd.
Shaanxi Automobile Group Co Ltd
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New Energy Equipment Ltd Western Anderson
Shaanxi Automobile Group Co Ltd
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Priority to CN201410415946.4A priority Critical patent/CN105443972B/en
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Abstract

There is provided a kind of Vehicular liquefied natural gas cylinder and the heavy truck, cryogenic pump connects hydraulic control system, and split type inner barrel includes ring flange, thin-wall tube, pedestal, and thermal insulation layer is equipped in thin-walled pipe outer wall and between ring flange and pedestal;Outer barrel positions heap postwelding with inner barrel by corresponding bellmouth and through-hole, and then inside and outside sleeve bottom is respectively formed groove, and the word of falling V is formed after connection and is welded again;Multifunctional perforated on valve seat in front end support device, installation inlet tube, outlet tube, blow-down pipe, liquid level gauge pipe or safety valve pipe, are equipped with anti-overfilling end socket and anti-overfilling cylinder, anti-overfilling end socket bottom is provided with aperture in hole;Rear end support device offers aperture on support end socket, to make support end socket inner space be communicated with bottle space;Rear end support sleeve material is fiber glass epoxy;End socket is equipped with molecular sieve before and after liner;Shell rear head is equipped with palladium oxide;The present invention can consolidate installation cryogenic pump can effectively reduce leakage heat again.

Description

Vehicular liquefied natural gas cylinder and the heavy truck
Technical field
The present invention relates to a kind of gas cylinder, more particularly to a kind of Vehicular liquefied natural gas cylinder, especially suitable for natural gas weight Card, which is equipped with, to be used.
Background technology
Natural gas has extraordinary economy, the feature of environmental protection and safety.Be becoming tight world energy sources day, atmosphere pollution pole For serious today, natural gas clean energy resource is widelyd popularize on traffic and transport field, especially heavy truck, is reduced oil and is disappeared Consumption reduces exhaust emission, will be the trend of future development, Chinese development weight during " New Energy Industry " will be " 12th Five-Year Plan " One of point.Natural gas heavy truck HC, which reduces 71%, CO contents, which reduces nearly 90%, amount of NOx, reduces 35.6%, solid particulate matter Content almost reduces by 100%.
The application of adjustment with national energy structure and the raising to environmental protection requirement, natural gas will be increasingly wider General, gas-fueled vehicles will increasingly be favored by consumers in general.The eruptive growth of LNG car in 2012 allows Each enterprise sees development business opportunity, but performance almost various expect not to always will appear in the market by consistent product release To problem.
Currently, general Vehicular liquefied natural gas cylinder mostly uses inside and outside double-layer structure, filled between liner and shell exhausted Hot material, interlayer space vacuumize;Its liner is fixed on by the hard support of front end and the soft support construction of rear end in shell.This Kind structural requirement support construction has enough intensity, can bear the active force generated during gas cylinder use.Liquefaction is natural It is that the connection of liquid feeding rifle fills mouth that gas, which fills, is entered inside bottle by low temperature feed liquor check valve, is passed through when using liquefied natural gas Low temperature quarter butt valve, enters vapourizing unit through excess flow valve, is that natural gas enters surge tank by liquefied natural gas vaporization, eventually by steady Pressure valve enters engine and is provided as motor vehicle fuel use.Band exists much not from the Vehicular liquefied natural gas cylinder of pressurized construction Foot:It is unstable from pressure charging system gas supply, it will produce for unsaturated vapor phenomenon when high engine speeds operating and engine suddenly acceleration, and When liquid level is too low in bottle, from supercharging equipment, there are failure risks;It is influenced by ambient temperature from pressure charging system, it shows and works as liquid feeding When hydraulic force of standing is too low, band needs waiting to boost for 15~30 minutes from the LNG gas cylinders of supercharging equipment after filling liquid;It is set from supercharging It is standby inconvenient, need driver to take action on one's own to operate;Automation is cannot achieve from the control of pressure charging system, to engine demand Experience and operation of the performance indicator dependent on driver;From supercharging equipment there are security risk, gas cylinder increases from after supercharging equipment As the link that entire air supply system is most weak, and other performances such as thermal insulation for influencing gas cylinder.Current all producer's gas cylinders are mating Excess flow valve latus rectum is the same, when common section is used without abnormal, if it is insufficient just to will appear gas supply when the time of climbing is more long Phenomenon.Existing gas cylinder is to make liquefied natural gas stream go out bottle and be used for engine by the pressure in the bottle, but in highlands, Ambient pressure is inherently small, and liquid can not be gone out by allowing for existing gas cylinder, to be unable to normal use.
The present invention is that the Chinese Patent Application No. of same applicant is:ZL201320875563.6, The subsequent application of ZL201220306448.2, ZL201320870022.4, ZL201320870025.8.
Invention content
For one in the prior art and multiple deficiencies, the present invention provides a kind of the Vehicular liquefied natural of integrated cryogenic pump Gas bottle and the heavy truck are not only able to firm peace by carrying out redesign and reasonable Arrangement to cryogenic pump stop sleeve Dress cryogenic pump can effectively reduce leakage heat again.
Herein on basis, in order to further decrease leakage heat, the present invention is also to the front end branch in the gas cylinder of liquefied natural gas Support structure is improved.
In addition, the gas cylinder of the liquefied natural gas of the present invention is provided with adsorbent equipment in rational position, it can keep adiabatic in bottle Vacuum degree in space simultaneously can effectively remove toxic gas.
It is illustrated in conjunction with technical scheme of the present invention and improvement principle, the beneficial effects of the invention are as follows:
1, cryogenic pump pumps out liquefied natural gas in liner by hydraulic control system and is effectively solved to which supply engine uses The problems such as inconvenient for use and security risk that existing gas cylinder of having determined is brought from pressure charging system, not by the pressure in the bottle when low temperature pump work With the influence of environmental pressure, even if can all pump out liquefied natural gas in the case of highlands or the very low pressure in the bottle for vehicle It uses.
2, front support is collectively constituted by front end support device and cryogenic pump sleeve arrangement, to realize that support construction is high-strength Degree can ensure that liner is firm and be supported in shell, and be convenient for, in liner surface wrap sheathing paper, effectively dropping low heat transfer. Since inner barrel is divided into three parts, upper part is equipped with ring flange, and middle part is equipped with thin-wall tube, and lower part is equipped with pedestal, reduces The difficulty of processing of inner barrel, and pedestal and outer barrel bottom are equipped with bellmouth and through-hole, are relationship matched one by one, It can be good at ensureing inner barrel and the overall dimensions after outer barrel welding, convenient for assembly, medial and lateral double layer sleeve barrel support Structure increases thermally conductive pathways significantly, in addition, being tied with heat insulation layer between inner barrel and outer barrel, is better able to effectively drop The leakage heat of low cryogenic pump sleeve arrangement.
3, it is provided with several functional holes on the valve seat in the front end support device, multiple function pipelines are installed in hole:Feed liquor Pipe, outlet tube, blow-down pipe, liquid level gauge pipe or safety valve pipe, blow-down pipe is in gas cylinder for a long time when not in use by day remaining in bottle Pressure stabilization function is played in right gas emptying, and outlet tube can make liquid use when cryogenic pump breaks down, and safety valve plays pipeline voltage stabilizing Safety effect, liquid level gauge can monitor liquid height in bottle at any time, and the installation of these pipelines allows user to monitor at any time The service condition of Vehicular liquefied natural gas cylinder, to safe handling is ensured, extend the effect of gas cylinder service life.
4, the Vehicular liquefied natural gas cylinder liner rear end is provided with anti-overfilling device, which includes that anti-excess is filled End socket and anti-overfilling cylinder are filled, anti-overfilling end socket bottom is provided with aperture, when sensing that liquid is full of when filling liquid, prevents There are still most of gas in overfilling device, stop after filling liquid that liquid can flow directly into anti-overfilling device in bottle To balance, so that the top of liner and anti-overfilling device can all be prevented with the presence of certain gas to realize The complete overflow of cylinder filling, protection gas cylinder is safe to use and is pressurized the effect of lossless storage time.
5, the rear end support device offers aperture on support end socket, to keep support end socket inner space empty with bottle Between communicate, reach support end socket and the temperature regime of supporting rod be consistent, avoid caused by confining gas heat transfer rate Support shaft causes the damage to the soft support in rear end with support end socket shrinkage degree difference, extends soft support construction and bottle to realize The effect of body service life, in addition, rear end support sleeve material is fiber glass epoxy, thermal conductivity is low, can effectively reduce rear end Heat is transmitted.
6, end socket is equipped with molecular sieve before and after liner, it acts as when vacuumizing adsorb water, methanol, ethyl alcohol, hydrogen sulfide, The high molecular particles such as sulfur dioxide, carbon dioxide, to ensure the vacuum degree of adiabatic space.Oxidation is equipped on shell rear head Palladium, the adsorbable remaining toxic gas of interlayer space welding.
Technical scheme of the present invention:
A kind of Vehicular liquefied natural gas cylinder, including shell 6, liner 5 and cryogenic pump 1 are formed exhausted between shell and liner Heat space 11, liner are connected to shell 6 by front end support device 2, cryogenic pump sleeve arrangement 4 and rear end support device 9 respectively On, cryogenic pump sleeve arrangement 4 includes inner barrel 41 and outer barrel 42, and cryogenic pump connects hydraulic control system, and cryogenic pump 1 is solid It is scheduled on ring flange 411, inner barrel 41 uses split type construction, including three parts, upper part to be equipped with ring flange 411, middle part Equipped with thin-wall tube 412, lower part is equipped with pedestal 413, on 412 outer wall of thin-wall tube of inner barrel 41, and at ring flange 411 and bottom Thermal insulation layer 43 is equipped between seat 413.
Further, the lower part of outer barrel 42 is equipped with through-hole 42a, and bottom is equipped with the first groove 42b;On inner barrel 413 periphery of pedestal is equipped with bellmouth 413a, and bottom is equipped with the second groove 413b;After outer barrel is assembled with inner barrel, taper Hole is corresponding to through-hole to become a whole hole, and the first groove, the second groove connect to form reverse V-shaped interface, in bellmouth 413a Heap postwelding is positioned with through-hole 42a, is welded at the second groove 413b and the first groove 42b.
Further, cryogenic pump sleeve arrangement 4 and the angle of gas cylinder axis direction are 10 °~29 °, the outer barrel 42 It is fixed by the first support plate A1 supports.
Further, the angle of the cryogenic pump sleeve arrangement and gas cylinder axis direction is 29 °, the first support plate A1 with it is outer Side sleeve is vertical and is fixed on the front head of liner.
Further, the thermal insulation layer 43 is equipped with clearance layer between all-glass paper and thermal insulation layer and outer barrel 42 4L;411 top surface of ring flange of the inner barrel 41 is equipped with a circle seal groove 411b and multiple threaded hole 411a, is used for and institute State the connection of cryogenic pump 1.
Further, the quantity of the bellmouth 413a is 2~6;412 wall thickness of thin-wall tube of the inner barrel 41 is 1~3mm;The wall thickness of the outer barrel 42 is 3~5mm;The wall thickness of the thermal insulation layer 43 is 10~14mm;The threaded hole The quantity of 411a is 3~6, along being arranged circumferentially for the ring flange.
Further, front end support device 2 is equipped with intermediate supports pipe 23, which is arranged in the first supporting sleeve 22 Between the second supporting sleeve 25 so that the first supporting sleeve 22 has at regular intervals, valve seat 21 and first with the second supporting sleeve 25 The one end of support set 22 welds.
Further, the intermediate supports pipe 23 is made of fiber glass epoxy, and the wall thickness difference of the intermediate supports pipe 23 More than the wall thickness of the first supporting sleeve 22 and the second supporting sleeve 25;Intermediate supports pipe 23 is supported with the first supporting sleeve 22 and second respectively The end of set 25 is connected with bolt 24, and is fastened with nut 26;Offered on the outer wall of the intermediate supports pipe 23 vacuumize it is logical Hole 23a;The material of the bolt 24 and nut 26 is preferably stainless steel, and with respectively with the first supporting sleeve 22 and the second supporting sleeve 25 end spot welding connection.
Further, inlet opening 21f, fluid hole 21d, relieving device 21b, main safety valve hole are offered on the valve seat 21 21e, pressure gauge hole 21c and secondary safe valve opening 21a, inlet opening 21f, fluid hole 21d, relieving device the 21b axis with valve seat 21 respectively Line is parallel, which is connected to inlet opening 21f, and secondary safe valve opening 21a, pressure gauge hole 21c and relieving device 21b connect Logical, main safety valve hole 21e, pressure gauge hole 21c and secondary safe valve opening 21a are vertical with the axis of valve seat 21 respectively;The inlet tube 210 one end is connect with the inlet opening 21f on valve seat 21, and the other end is connect with connector 27, one end and the valve seat 21 of blow-down pipe 28 On relieving device 21b connections, the other end connect with connector 27, and one end of outlet tube 29 is connect with the fluid hole 21d on valve seat 21, The other end is connect with connector 27, and connection type is welding;Second supporting sleeve 25 is equipped with locating piece 25a, convenient for assembly Positioning.
Further, rear end support device includes:Support shaft 91, support pipe cap 92, longitudinal supporting plate 95, support sleeve 96 With intermediate supports axle sleeve 97;Support pipe cap 92 in liner 5 interior rear head and support shaft 91 be welded to connect, support sleeve 96 and Longitudinal supporting plate 95 is welded to connect, and longitudinal supporting plate 95 is welded to connect with the outer rear head in shell 6, and intermediate supports axle sleeve 97 is set It sets between support sleeve 96 and support shaft 91, which is set in support shaft, and the intermediate supports axle sleeve Bottom is formed with boss 971, and the boss 971 and the medial surface of support sleeve 96 offset.
Further, the intermediate supports axle sleeve 97 of rear end support device 9 is made of fiber glass epoxy, the intermediate supports axle sleeve It is interference fitted between clearance fit between 97 and the support shaft 91, with the support sleeve 96;98 sets of rear end support limit plate Be located at the rear end of the support shaft 91, which blocks the intermediate supports axle sleeve 97, and with the support Axle sleeve 96 is welded to connect;The outer wall of the support pipe cap 92 is equipped with filling liquid through-hole 92a.
Further, it is respectively equipped with molecular sieve 10 on the forward and backward end socket outer wall of the liner 5;The rear head of the shell Inner wall is equipped with palladium oxide 7.
Further, further include anti-overfilling device 8 comprising anti-overfilling end socket 81 and anti-overfilling cylinder 82;Anti- 81 bottom of overfilling end socket is provided with aperture 8c.
Further, anti-82 one end of overfilling cylinder is welded to connect with anti-overfilling end socket 81, the other end with it is described The rear head of liner 5 is welded to connect;The volume of the anti-overfilling device 8 is the 10% of gas cylinder total measurement (volume).
Further, the front end support device 2 is connect by locating piece 25a with liner front head, the liner front head Setting is separately installed with locating piece 25a, inlet tube 12 in bottle, is spare in blow-down pipe 13 and bottle in bottle there are four through-hole in through-hole Outlet tube 14;Inlet tube 12 in bottle, spare outlet tube 14 passes through support plate A2 and liner inner cylinder in blow-down pipe 13 and bottle in bottle Connection.
A kind of heavy truck, using above-mentioned any Vehicular liquefied natural gas cylinder.
In conclusion the present invention have changed existing product go out liquid mode, and compensate for the deficiencies in the prior art And defect, novel in design unique, clever structure is easy to utilize, has good economic results in society.
Description of the drawings
Fig. 1 is the schematic cross-sectional view of the Vehicular liquefied natural gas cylinder of the present invention;
Fig. 2 is the schematic cross-sectional view of the cryogenic pump sleeve arrangement of the present invention;
Fig. 3 is the schematic cross-sectional view of the cryogenic pump sleeve arrangement of the present invention;
Fig. 4 is the schematic cross-sectional view of the front support structure of the present invention;
Fig. 5 is the schematic cross-sectional view along BB lines in Fig. 3;
Fig. 6 is the left view structural representation of the front support structure of the present invention;
Fig. 7 is the dimensional structure diagram of the valve seat of the present invention;
Fig. 8 is the schematic cross-sectional view of the rear end support construction of the present invention;
Fig. 9 is the schematic cross-sectional view of the anti-overfilling device of the present invention.
Specific implementation mode
The present invention is described further below in conjunction with the accompanying drawings.
As shown in Figure 1, this kind of Vehicular liquefied natural gas cylinder, including shell 6, liner 5, cryogenic pump 1 and liquid level gauge 3, it is interior Courage and shell are designed with forward and backward end socket, and adiabatic space 12 is formed between shell 6 and liner 5, and liner 5 passes through front end respectively Support device 2, cryogenic pump sleeve arrangement 4 and rear end support device 9 are connected on shell 6, front end support device 2 and low temperature pump block It is rigid support that wound packages, which sets 4, and rear end support device 9 is soft supporting.
In conjunction with shown in Fig. 1~3, which includes inner barrel 41 and outer barrel 42, inner barrel 41 Setting is on the outside in 42 inner cavity of sleeve, which divides for three parts, and upper part is equipped with ring flange 411, and middle part is equipped with thin-walled Pipe 412, lower part are equipped with pedestal 413.Pedestal 413 is equipped with bellmouth 413a and the second groove 413b.In the outer wall of thin-wall tube 412 On, and a circle thermal insulation layer 43 is wound between ring flange 411 and pedestal 413, the thermal insulation layer is using the heat-insulated glass fibers of low temperature Dimension paper material is made, and can effectively reduce the leakage heat of cryogenic pump sleeve arrangement.The bottom of the outer barrel 42 be equipped with through-hole 42a and First groove 42b.The bottom of the outer barrel 42 is fixed by through-hole 42a and bellmouth 413a with the pedestal 413 of inner barrel 41 Built-up welding behind position, then welded at the first groove 42b and the second groove 413b, therefore, heat-transfer path is thin by outer barrel 42 Wall is transmitted to after the pedestal 413 of inner barrel 41 and thin-wall tube 412 at front end flange 411, increases thermally conductive pathways significantly.? Clearance layer 4L is equipped between the thermal insulation layer 43 and the outer barrel 42 to be used for vacuumizing.The bellmouth that pedestal 413 is equipped with 413a quantity is 2~6, and quantity is preferably 4.The number of openings that outer barrel 42 is equipped be 2~6, preferably 4, It need to be consistent with the quantity of bellmouth 413a.411 top surface of ring flange of the inner barrel 41 is equipped with a circle seal groove 411b and multiple threaded hole 411a is used for connecting with cryogenic pump.The quantity of the threaded hole be 3~6, preferably 4, along described Ring flange is arranged circumferentially.412 wall thickness of thin-wall tube of inner barrel 41 is 1~3mm, preferably 1.5mm, the outer sheath The wall thickness of cylinder 42 is 3~5mm, and the wall thickness of preferably 4mm, the thermal insulation layer 43 are 10~14mm, preferably 12mm.
In addition, as shown in Figure 1, the angle of the axis direction of the cryogenic pump sleeve arrangement 4 and natural gas cylinder be 10 °~ 29 ° (i.e. when gas cylinder is laterally disposed, gas cylinder axis is parallel with horizontal line, the folder between cryogenic pump sleeve arrangement and horizontal line Angle), which is preferably 29 °.The outer barrel 42 is fixed by the first support plate A1 supports.First support plate A1 and outer sheath Cylinder 42 is vertical and is fixed on the front head of the liner 5.
In conjunction with shown in Fig. 1, Fig. 4, Fig. 5, Fig. 6 and Fig. 7, the front support structure include valve seat 21, the first supporting sleeve 22, in Between support tube 23 and the second supporting sleeve 25, and eliminate support neck tube connection cover.The one end of valve seat 21 and the first supporting sleeve 22 Welding, the other end of the first supporting sleeve 22 connect with one end of the intermediate supports pipe 23, the other end of intermediate supports pipe 23 and One end of second supporting sleeve 25 connects, and the other end of the second supporting sleeve 25 is equipped with locating piece 25a, is welded with cylinder liner front head It connects.Intermediate supports pipe be arranged between the first supporting sleeve 22 and the second supporting sleeve 25 so that the first supporting sleeve 22 not with second Support set 25 is in direct contact, i.e. the first supporting sleeve 22 has at regular intervals with the second supporting sleeve 25.The intermediate supports pipe 23 respectively with The end of first supporting sleeve 22 and the second supporting sleeve 25 bolt 24 and nut 26 connect, and bolt quantity is 2.In addition intermediate branch Stay tube 23 is made of the fiber glass epoxy of model D3848, is the material that thermal conductivity is low and rigidity is strong.In order to further decrease heat It transmits, the wall thickness of the intermediate supports pipe 23 is all higher than the wall thickness of the first supporting sleeve 22 and the second supporting sleeve 25.And in intermediate supports It is offered on the outer wall of pipe 23 and vacuumizes through-hole 23a.
In conjunction with shown in Fig. 4~7, inlet opening 21f, fluid hole 21d, relieving device 21b, main safety valve are offered on valve seat 21 Hole 21e, pressure gauge hole 21c and secondary safe valve opening 21a, inlet opening 21f, fluid hole 21d, relieving device 21b respectively with valve seat 21 Axis is parallel, which is connected to inlet opening 21f, secondary safe valve opening 21a, pressure gauge hole 21c and relieving device 21b Connection, main safety valve hole 21e, pressure gauge hole 21c and secondary safe valve opening 21a are vertical with the axis of valve seat 1 respectively.Inlet tube 210 One end connect with the inlet opening 21f on valve seat 21, the other end is connect with connector 27, one end of blow-down pipe 28 on valve seat 21 Relieving device 21b connections, the other end are connect with connector 27, one end of outlet tube 29 and the fluid hole 21d on valve seat 21, the other end with Connector 27 connects, and connection type is welding;Second supporting sleeve 25 is equipped with locating piece 25a, convenient for assembly positioning.
In conjunction with Fig. 1 and Fig. 8, which includes:The rear head, outer of support shaft 91, support pipe cap 92, liner 5 Rear head, longitudinal supporting plate 95, support sleeve 96 and the intermediate supports axle sleeve 97 of shell 6.Support the rear head of pipe cap 92 and liner 5 It is welded to connect with support shaft 91, support sleeve 96 is welded to connect with longitudinal supporting plate 95, the rear envelope of longitudinal supporting plate 95 and shell 6 Head is welded to connect, which is arranged between support sleeve 96 and support shaft 91,97 sets of the intermediate supports axle sleeve It is located in support shaft 91, and the bottom of the intermediate supports axle sleeve 97 is formed with boss 971, the inside of the boss and support sleeve 96 Face offsets, and the support sleeve medial surface is for lateral surface, and medial surface is towards support pipe cap 92, and lateral surface is towards bottom of bottle. The intermediate supports axle sleeve 97 is made of the fiber glass epoxy of model D3848, the intermediate supports axle sleeve 97 and the support shaft 91 Between be interference fitted between clearance fit, with the support sleeve 96.The intermediate supports axle sleeve thermal conductivity is low so that stainless steel branch With the low substance of thermal conductivity to effectively drop low heat transfer between support.Since 97 material of intermediate supports axle sleeve is expoxy glass Steel, thermal conductivity is small, and to improve thermal resistance, i.e., increase intermediate supports axle sleeve 97 can be improved between support sleeve 96 and support shaft 91 Rear end supports the thermal resistance of conduction process, to effectively reduce the leakage heat of Vehicular liquefied natural gas cylinder, reduces the static of gas cylinder and steams Hair rate.
In addition, intermediate supports axle sleeve 97 is arranged with rear end support in axial float in the support shaft 91 in order to prevent Limiting plate 98, which blocks the intermediate supports axle sleeve 97, and is welded to connect with the support sleeve 96. It is equipped with filling liquid through-hole 92a on the outer wall of support pipe cap 92, facilitates charge and discharge liquid.
In conjunction with Fig. 1 and Fig. 9, which further includes anti-overfilling device 8, by anti-overfilling end socket 81 and anti-excess Fill the composition of cylinder 82.Anti- 82 one end of overfilling cylinder is welded to connect with anti-overfilling end socket 81, the other end with it is described The rear head of liner 5 is welded to connect;Anti- 81 bottom of overfilling end socket is provided with aperture 8c.The anti-overfilling device 8 Volume is the 10% of gas cylinder total measurement (volume).
As shown in Figure 1, being equipped with molecular sieve 10 on the forward and backward end socket outer wall of the liner 5, it acts as inhaled when vacuumizing The high molecular particles such as attached water, methanol, ethyl alcohol, hydrogen sulfide, sulfur dioxide, carbon dioxide, to ensure the vacuum of adiabatic space 12 Degree.Palladium oxide 7 is equipped on the rear head inner wall of the shell 6.It acts as the remaining toxic gases of absorption interlayer space welding. Wherein molecular sieve and palladium oxide are graininess, can directly be amplexiformed on gas cylinder inner wall, are arranged after can also being wrapped up by metal mesh and exist On gas cylinder inner wall.
In addition, setting is equipped on the second supporting sleeve 25 in through-hole and is determined there are four through-hole on the front head of the liner 5 Inlet tube 12 in position block 25a, bottle, spare outlet tube 14 in blow-down pipe 13 and bottle in bottle, connection type is to be welded to connect.It is fixed Position block 25a is located at front head center, is used for the positioning of front end support device 2;Blow-down pipe 13 in inlet tube 12 and bottle in bottle It is fixed on the cylinder of liner 5 in the top of liner 5, and with support plate A2;Spare outlet tube 14 is located at liner 5 in the bottle Lower part, and be fixed on the cylinder of liner 5 with support plate A2, spare outlet tube 14 is made when cryogenic pump 1 breaks down in bottle ?.
The present invention provides a kind of Vehicular liquefied natural gas cylinder and the heavy truck, and cryogenic pump connects hydraulic control system, Split type inner barrel includes ring flange, thin-wall tube, pedestal, is equipped in thin-walled pipe outer wall and between ring flange and pedestal heat-insulated Layer;Outer barrel positions heap postwelding with inner barrel by corresponding bellmouth and through-hole, and then shape is distinguished in inside and outside sleeve bottom The word of falling V is formed at groove, after connection to weld again;Multifunctional perforated on valve seat in front end support device, installation inlet tube in hole go out Liquid pipe, blow-down pipe, liquid level gauge pipe or safety valve pipe are equipped with anti-overfilling end socket and anti-overfilling cylinder, anti-overfilling End socket bottom is provided with aperture;Rear end support device support end socket on offer aperture, to make support end socket inner space with Bottle space communicates;Rear end support sleeve material is fiber glass epoxy;End socket is equipped with molecular sieve before and after liner;It is sealed after shell Head is equipped with palladium oxide;The present invention can consolidate installation cryogenic pump can effectively reduce leakage heat again.
It should be noted that specific implementation mode is only the explanation and illustration to technical solution of the present invention, it should not be by it It is interpreted as the restriction to technical solution of the present invention, what any technical solution using the present invention and only making locally changed, Reng Yingluo Enter in protection scope of the present invention.

Claims (11)

1. a kind of Vehicular liquefied natural gas cylinder, including shell (6), liner (5) and cryogenic pump (1), shell (6) and liner (5) Between form adiabatic space (11), liner (5) passes through front end support device (2), cryogenic pump sleeve arrangement (4) and rear end branch respectively Support arrangement (9) is connected on shell (6), and cryogenic pump sleeve arrangement (4) includes inner barrel (41) and outer barrel (42), low temperature Pump connection hydraulic control system, cryogenic pump (1) are fixed on ring flange (411), which is characterized in that inner barrel (41), which uses, to be divided Body formula constructs, including three parts, and upper part is equipped with ring flange (411), and middle part is equipped with thin-wall tube (412), and lower part is equipped with pedestal (413), on thin-wall tube (412) outer wall of inner barrel (41), and between ring flange (411) and pedestal (413) be equipped with every Thermosphere (43);
The lower part of outer barrel (42) is equipped with through-hole (42a), and bottom is equipped with the first groove (42b);Pedestal on inner barrel (413) periphery is equipped with bellmouth (413a), and bottom is equipped with the second groove (413b);Outer barrel is bored with after inner barrel assembly Shape hole is corresponding to through-hole to become a whole hole, and the first, second groove connects to form reverse V-shaped interface, at bellmouth (413a) Heap postwelding is positioned with through-hole (42a), is welded at the second groove (413b) and the first groove (42b);
Front end support device (2) is equipped with intermediate supports pipe (23), which is arranged in the first supporting sleeve (22) and second Between supporting sleeve (25) so that the first supporting sleeve (22) has at regular intervals, valve seat (21) and first with the second supporting sleeve (25) The one end of supporting sleeve (22) welds;
Offered on the valve seat (21) inlet opening (21f), fluid hole (21d), relieving device (21b), main safety valve hole (21e), Pressure gauge hole (21c) and secondary safe valve opening (21a), inlet opening (21f), fluid hole (21d), relieving device (21b) respectively with valve seat (21) axis is parallel, which is connected to inlet opening (21f), secondary safe valve opening (21a), pressure gauge hole (21c) is connected to relieving device (21b), main safety valve hole (21e), pressure gauge hole (21c) and secondary safe valve opening (21a) respectively with valve The axis of seat (21) is vertical;One end of inlet tube (210) is connect with the inlet opening (21f) on valve seat (21), the other end and connector (27) it connecting, one end of blow-down pipe (28) is connect with the relieving device (21b) on valve seat (21), and the other end is connect with connector (27), One end of outlet tube (29) is connect with the fluid hole (21d) on valve seat (21), and the other end is connect with connector (27), and connection type is equal For welding;Second supporting sleeve (25) is equipped with locating piece (25a), convenient for assembly positioning;
The intermediate supports pipe (23) is made of fiber glass epoxy, and the wall thickness of the intermediate supports pipe (23) is respectively greater than first The wall thickness of support set (22) and the second supporting sleeve (25);Intermediate supports pipe (23) respectively with the first supporting sleeve (22) and the second supporting sleeve (25) end is connected with bolt (24), and is fastened with nut (26);Pumping is offered on the outer wall of the intermediate supports pipe (23) Vacuum through holes (23a);The material of the bolt (24) and nut (26) is stainless steel, and respectively with the first supporting sleeve (22) and the The end spot welding connection of two supporting sleeves (25);
The front end support device (2) is connect by locating piece (25a) with liner front head, and there are four liner front head settings Through-hole, locating piece (25a), inlet tube (12) in bottle are separately installed in through-hole, in bottle in blow-down pipe (13) and bottle it is spare go out liquid It manages (14);Inlet tube (12) in bottle, spare outlet tube (14) passes through support plate (A2) and liner in blow-down pipe (13) and bottle in bottle Inner cylinder connects.
2. Vehicular liquefied natural gas cylinder according to claim 1, which is characterized in that cryogenic pump sleeve arrangement (4) and gas The angle of bottle axis direction is 10 °~29 °, and the outer barrel (42) is supported by the first support plate (A1) and fixed.
3. Vehicular liquefied natural gas cylinder according to claim 2, which is characterized in that the cryogenic pump sleeve arrangement (4) Angle with gas cylinder axis direction is 29 °, and the first support plate (A1) is vertical with outer barrel and is fixed on the front head of liner On.
4. according to any Vehicular liquefied natural gas cylinder of claims 1 to 3, which is characterized in that the thermal insulation layer (43) clearance layer (4L) is equipped between all-glass paper and thermal insulation layer (43) and outer barrel (42);The inner barrel (41) Ring flange (411) top surface be equipped with a circle seal groove (411b) and multiple threaded holes (411a), be used for and the cryogenic pump (1) it connects.
5. Vehicular liquefied natural gas cylinder according to claim 4, which is characterized in that the quantity of the bellmouth (413a) It is 2~6;Thin-wall tube (412) wall thickness of the inner barrel (41) is 1~3mm;The wall thickness of the outer barrel (42) is 3 ~5mm;The wall thickness of the thermal insulation layer (43) is 10~14mm;The quantity of the threaded hole (411a) is 3~6, along the method Blue disk is arranged circumferentially.
6. according to any Vehicular liquefied natural gas cylinder of claims 1 to 3, which is characterized in that rear end support device Including:Support shaft (91), support pipe cap (92), longitudinal supporting plate (95), support sleeve (96) and intermediate supports axle sleeve (97);Branch Stay tube cap (92) in liner (5) interior rear head and support shaft (91) be welded to connect, support sleeve (96) and longitudinal supporting plate (95) it is welded to connect, longitudinal supporting plate (95) is welded to connect with the outer rear head in shell (6), intermediate supports axle sleeve (97) setting Between support sleeve (96) and support shaft (91), which is set in support shaft (91), and among this The bottom of support sleeve (97) is formed with boss (971), and the boss (971) and the medial surface of support sleeve (96) offset.
7. Vehicular liquefied natural gas cylinder according to claim 6, which is characterized in that the centre of rear end support device (9) Support sleeve (97) is made of fiber glass epoxy, clearance fit between the intermediate supports axle sleeve (97) and the support shaft (91), It is interference fitted between the support sleeve (96);Rear end support limit plate (98) is set in the rear end of the support shaft (91), The rear end support limit plate (98) blocks the intermediate supports axle sleeve (97), and is welded to connect with the support sleeve (96);Institute The outer wall for stating support pipe cap (92) is equipped with filling liquid through-hole (92a).
8. according to any Vehicular liquefied natural gas cylinder of claims 1 to 3, which is characterized in that the liner (5) Molecular sieve (10) is respectively equipped on forward and backward end socket outer wall;The rear head inner wall of the shell (6) is equipped with palladium oxide (7).
9. according to any Vehicular liquefied natural gas cylinder of claims 1 to 3, which is characterized in that further include anti-excess Charging device (8) comprising anti-overfilling end socket (81) and anti-overfilling cylinder (82);Anti- overfilling end socket (81) bottom Portion is provided with aperture (8c).
10. Vehicular liquefied natural gas cylinder according to claim 9, which is characterized in that anti-overfilling cylinder (82) one End is welded to connect with anti-overfilling end socket (81), and the other end and the rear head of the liner (5) are welded to connect;The anti-excess is filled The volume of assembling device (8) is the 10% of gas cylinder total measurement (volume).
11. a kind of heavy truck, which is characterized in that any described Vehicular liquefied natural using the claims 1 to 10 Gas bottle.
CN201410415946.4A 2014-08-21 2014-08-21 Vehicular liquefied natural gas cylinder and the heavy truck Active CN105443972B (en)

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CA2362844C (en) * 2001-11-30 2004-08-31 Westport Research Inc. Method and apparatus for delivering a high pressure gas from a cryogenic storage tank
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CN201110457Y (en) * 2007-08-29 2008-09-03 北京天海工业有限公司 Vehicle mounted liquefied natural gas container
JP2010155275A (en) * 2008-12-26 2010-07-15 Sango Co Ltd Weld joint and method for manufacturing the same
CN203641869U (en) * 2013-12-24 2014-06-11 陕西汽车集团有限责任公司 Liquefied-natural-gas cylinder for vehicle

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Address after: No.39 Xingfu North Road, Xi'an, Shaanxi 710201

Patentee after: Shaanxi Automobile Group Co.,Ltd.

Patentee after: XI'AN DESEN NEW ENERGY EQUIPMENT Co.,Ltd.

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