CN105443972A - Liquefied natural gas cylinder for vehicle and heavy-duty truck using liquefied natural gas cylinder for vehicle - Google Patents
Liquefied natural gas cylinder for vehicle and heavy-duty truck using liquefied natural gas cylinder for vehicle Download PDFInfo
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- CN105443972A CN105443972A CN201410415946.4A CN201410415946A CN105443972A CN 105443972 A CN105443972 A CN 105443972A CN 201410415946 A CN201410415946 A CN 201410415946A CN 105443972 A CN105443972 A CN 105443972A
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Abstract
The invention provides a liquefied natural gas cylinder for vehicle and a heavy-duty truck using the liquefied natural gas cylinder for vehicle. A cryopump is connected to a hydraulic control system, a split type inside sleeve comprises a flange, a thin walled tube and a pedestal, and a thermal insulation layer is provided on the outer wall of the thin walled tube as well as between the flange and the pedestal; an overlay welding is carried out for an outside sleeve and the inside sleeve after positioning through a corresponding through hole and a corresponding tapped hole, grooves are respectively formed at bottom parts of the inside sleeve and the outside sleeve, an inverted V-shaped part is combined after connection, and a welding is carried out; a valve seat in a front end supporting device is provided with multifunctional holes, a liquid inlet tube, a liquid outlet tube, a blow-down tube, a liquidometer tube or a safety valve tube are installed in the holes, an over-filling preventing head and an over-filling preventing cylindrical shell are equipped, and the bottom of the over-filling preventing head is provided with a small hole; a rear end supporting device is provided with a small hole on a supporting head, so that the internal space of the supporting head is communicated with the space of the cylinder; a rear end supporting shaft sleeve is made of epoxy glass fiber reinforced plastic; front and back heads of an inner container are provided with molecular sieves; a head of a housing is provided with palladium oxide. The cryopump can be stably installed on the liquefied natural gas cylinder, and heat leakage is effectively reduced.
Description
Technical field
The present invention relates to a kind of gas cylinder, particularly the Vehicular liquefied natural gas cylinder of one, be specially adapted to rock gas and heavily block outfit use.
Background technique
Rock gas has extraordinary Economy, the feature of environmental protection and Security.In today that world energy sources day is becoming tight, pollution of atmosphere is very serious, at traffic and transport field, especially heavy truck is widelyd popularize rock gas clean energy resource, reduce consumption of petroleum, reduce pollution emissions, to be the trend of future development, one of Chinese development emphasis during " New Energy Industry " will be " 12 ".Rock gas heavily blocks that HC reduces 71%, CO content reduces that nearly 90%, NOX content reduces 35.6%, solid particulate matter content almost reduces by 100%.
Adjustment along with national energy structure and the raising to environmental protection requirement, the application of rock gas will be more and more extensive, and gas-fueled vehicles will more and more be subject to the favor of consumers in general.The eruptive growth of LNGV (liquefied natural gas vehicle) in 2012 allows each enterprise see development business opportunity, but the almost consistent product release of performance always there will be various unexpected problem to market.
At present, the general inside and outside double layer construction of the many employings of Vehicular liquefied natural gas cylinder, filling heat insulator between inner bag and shell, mezzanine space vacuumizes; Its inner bag is fixed in shell by the hard support of front end and the soft supporting structure of rear end.This structural requirement supporting structure has enough intensity, can bear the active force produced in gas cylinder using process.It is that the connection of liquid feeding rifle fills mouth that LNG Liquefied natural gas fills, bottle inside is entered by low temperature feed liquor one-way valve, use during LNG Liquefied natural gas and pass through low temperature quarter butt valve, vaporizing unit is entered through Restrictor Valves, be that rock gas enters knock out drum by liquefied natural gas vaporization, enter motor eventually through pressure maintaining valve and be provided as automotive fuel use.There is a lot of deficiencies from the Vehicular liquefied natural gas cylinder of pressure structure in band: unstable from pressurization system air feed, can produce when high engine speeds running and motor suddenly accelerate for unsaturated vapor phenomenon, and when liquid level is too low in bottle, there is failure risk from supercharging equipment; Influenced by ambient temperature from pressurization system, show when liquid filling station hydraulic force is too low, after topping up, need wait boosting in 15 ~ 30 minutes with the LNG gas cylinder from supercharging equipment; From supercharging equipment operation inconvenience, driver is needed to take action on one's own to operate; Cannot automation be realized from the control of pressurization system, the performance index of engine demand be depended on to experience and the operation of driver; There is potential safety hazard from supercharging equipment, gas cylinder increases after supercharging equipment, becomes the weakest link of whole air supply system, and affects other performances such as the thermal insulation of gas cylinder.Current all producers gas cylinder supporting Restrictor Valves latus rectum is the same, not abnormal when common section uses, if just there will be air feed not foot phenomenon when the climbing time is more of a specified duration.Existing gas cylinder is all make liquefied natural gas stream go out bottle for motor by pressure of the inside of a bottle, but in plateau section, ambient pressure is inherently little, just makes existing gas cylinder cannot fluid, thus can not normally use.
The present invention is the Chinese Patent Application No. of same claimant: the subsequent application of ZL201320875563.6, ZL201220306448.2, ZL201320870022.4, ZL201320870025.8.
Summary of the invention
For one and multiple deficiency of the prior art, the invention provides a kind of Vehicular liquefied natural gas cylinder and this heavy truck, it is integrated with cryopump, by redesigning and reasonable Arrangement cryopump stop sleeve, not only firmly can install cryopump and effectively can reduce again leakage heat.
On this basis, leak heat to reduce further, the present invention also improves the front support structure in the gas cylinder of LNG Liquefied natural gas.
In addition, the gas cylinder of LNG Liquefied natural gas of the present invention is provided with adsorbent equipment at rational position, can keep the degree of vacuum in bottle in adiabatic space and effectively can remove toxic gas.
Now set forth in conjunction with technological scheme of the present invention and improvement principle, the invention has the beneficial effects as follows:
1, cryopump pumps LNG Liquefied natural gas in inner bag by hydraulic control system thus supply engine use, efficiently solve the problems such as use inconvenience that existing gas cylinder brings from pressurization system and potential safety hazard, by the impact of pressure of the inside of a bottle and external pressure during cryopump work, though when plateau section or pressure of the inside of a bottle very low all pumpable go out LNG Liquefied natural gas for car.
2, front support is made up of jointly front end support device and cryopump sleeve means, thus realizes supporting structure high strength, can ensure firm being supported in shell of inner bag, and is convenient to, at inner bag surface wrap sheathing paper, effectively reduce heat trnasfer.Because inner barrel is divided into three parts, its top is provided with flange plate, middle part is provided with thin walled tube, bottom is provided with base, decrease the difficulty of processing of inner barrel, and be provided with cone shape hole and through hole bottom base and outer barrel, it is the relation coordinated one by one, can be good at ensure inner barrel weld with outer barrel after overall dimensions, convenient for assembly, medial and lateral double layer sleeve barrel supporting structure, greatly increase thermally conductive pathways, in addition, between inner barrel and outer barrel, be tied with heat insulation layer, more effectively can reduce the leakage heat of cryopump sleeve means.
3, valve seat in this front end support device is provided with some functional holes, in hole, multiple function pipeline is installed: liquid inlet pipe, drain pipe, blow-down pipe, level meter pipe or safety valve pipe, blow-down pipe when gas cylinder does not use for a long time by natural gas vent remaining in bottle, play pressure stabilization function, drain pipe can do fluid and use when cryopump breaks down, safety valve plays pipeline voltage stabilizing safety effect, level meter can monitor liquid height in bottle at any time, the installation of these pipelines makes user can monitor the service condition of Vehicular liquefied natural gas cylinder at any time, thus there is guarantee safe handling, extend the effect in gas cylinder working life.
4, this Vehicular liquefied natural gas cylinder inner bag rear end is provided with anti-overfilling device, this device comprises anti-overfilling end socket and anti-overfilling cylindrical shell, aperture is had bottom anti-overfilling end socket, when sensing that liquid is full of when topping up, still most of gas is there is in anti-overfilling device, after stopping topping up, in bottle, liquid can flow until balance in anti-overfilling device, thus make the top of inner bag and anti-overfilling device that certain gas all can be had to exist, thus achieve and prevent the complete overflow of cylinder filling, protection gas cylinder use safety and the effect of supercharging lossless storage time.
5, this rear end support device offers aperture on support end socket, thus support end socket inner space is communicated with bottle space, reach the temperature regime supporting end socket and strut to be consistent, avoid the back shaft because confining gas heat transfer rate causes and the different damage caused the soft support in rear end of support end socket shrinkage degree, thus realize the effect that extends soft supporting structure and bottle working life, in addition, rear end support sleeve material is fiber glass epoxy, its heat conductivity is low, can effectively reduce rear end heat trnasfer.
6, before and after inner bag, end socket is equipped with molecular sieve, and it act as the high molecular particles such as adsorbed water when vacuumizing, methyl alcohol, ethanol, hydrogen sulfide, sulfur dioxide, carbon dioxide, thus ensures the degree of vacuum of adiabatic space.Shell rear head is provided with palladium oxide, and adsorbable mezzanine space welds remaining toxic gas.
Technological scheme of the present invention:
A kind of Vehicular liquefied natural gas cylinder, comprise shell 6, inner bag 5 and cryopump 1, adiabatic space 11 is formed between shell and inner bag, inner bag is respectively by front end support device 2, cryopump sleeve means 4 and rear end support device 9 are connected on shell 6, cryopump sleeve means 4 comprises inner barrel 41 and outer barrel 42, cryopump connecting fluid pressure control system, cryopump 1 is fixed on flange plate 411, inner barrel 41 adopts split type structure, comprise three parts, its top is provided with flange plate 411, middle part is provided with thin walled tube 412, bottom is provided with base 413, on thin walled tube 412 outer wall of inner barrel 41, and thermal-protective coating 43 is provided with between flange plate 411 and base 412.
Further, the bottom of outer barrel 42 is provided with through hole 42a, and bottom is provided with the first groove 42b; Be arranged with cone shape hole 413a outside base 412 on inner barrel, bottom is provided with the second groove 413b; After outer barrel and inner barrel assemble, cone shape hole one-tenth as a whole hole corresponding to through hole, first, second groove is connected to form reverse V-shaped interface, locates pile postwelding at cone shape hole 413a and through hole 42a, in the second groove 413b and the welding of the first groove 42b place.
Further, cryopump sleeve means 4 is 10 ° ~ 29 ° with the angle of gas cylinder axial direction, and described outer barrel 42 supports fixing by the first dunnage A1.
Further, the angle of described cryopump sleeve means and gas cylinder axial direction is 29 °, and the first dunnage A1 is vertical with outer barrel and be fixed on the front head of inner bag.
Further, described thermal-protective coating 43 is glass fiber paper and is provided with clearance layer 4L between thermal-protective coating and outer barrel 42; Flange plate 411 end face of this inner barrel 41 is provided with a circle seal groove 411b and multiple tapped hole 411a, for being connected with described cryopump 1.
Further, the quantity of described cone shape hole 413a is 2 ~ 6mm; Thin walled tube 412 wall thickness of described inner barrel 41 is 1 ~ 3mm; The wall thickness of described outer barrel 42 is 3 ~ 5mm; The wall thickness of described thermal-protective coating 43 is 10 ~ 14mm; The quantity of described tapped hole 411a is 3 ~ 6, and the circumference along described flange plate is evenly arranged.
Further, front end support device 2 is provided with intermediate support pipe 23, this intermediate support pipe is arranged between the first supporting sleeve 22 and the second supporting sleeve 25, make the first supporting sleeve 22 and the second supporting sleeve 25 tool at regular intervals, a welding edges of valve seat 21 and the first supporting sleeve 22.
Further, described intermediate support pipe 23 is made up of fiber glass epoxy, and the wall thickness of this intermediate support pipe 23 is greater than the wall thickness of the first supporting sleeve 22 and the second supporting sleeve 25 respectively; Intermediate support pipe 23 is connected with bolt 24 with the end of the first supporting sleeve 22 and the second supporting sleeve 25 respectively, and fastening with nut 26; The outer wall of described intermediate support pipe 23 offers and vacuumizes through hole 23a; The material of described bolt 24 and nut 26 is preferably stainless steel, and with connect with the end points of the first supporting sleeve 22 and the second supporting sleeve 25 is soldered respectively.
Further, described valve seat 21 offers inlet opening 21f, liquid outlet opening 21d, relieving device 21b, main safety valve hole 21e, pressure gauge hole 21c and the safe valve opening 21a of pair, inlet opening 21f, liquid outlet opening 21d, relieving device 21b respectively with the axis being parallel of valve seat 21, this main safety valve hole 21e is communicated with inlet opening 21f, secondary safe valve opening 21a, pressure gauge hole 21c are communicated with relieving device 21b, the safe valve opening 21a of safe valve opening 21e, pressure gauge hole 21c and pair respectively with the axes normal of valve seat 21; One end of described liquid inlet pipe 210 is connected with the inlet opening 21f on valve seat 21, the other end is connected with joint 27, one end of blow-down pipe 28 is connected with the relieving device 21b on valve seat 21, the other end is connected with joint 27, liquid outlet opening 21d on one end of drain pipe 29 and valve seat 21, the other end is connected with joint 27, and Placement is welding; Described second supporting sleeve 25 is provided with positioning block 25a, is convenient to assembling and positioning.
Further, the intermediate support axle sleeve 97 of rear end support device 9 is made up of fiber glass epoxy, Spielpassung between this intermediate support axle sleeve 97 and described back shaft 91, and interference fit between described support sleeve 96; Support limit plate 98 is set in the rear end on described back shaft 91, and this rear end support limit plate 98 blocks described intermediate support axle sleeve 97, and is welded to connect with described support sleeve 96; The outer wall of described support pipe cap 92 is provided with topping up through hole 92a.
Further, rear end support device comprises: back shaft 91, support pipe cap 92, longitudinal supporting plate 95, support sleeve 96 and intermediate support axle sleeve 97; Support pipe cap 92 to be welded to connect with the interior rear head in inner bag 5 and back shaft 91, support sleeve 96 and longitudinal supporting plate 95 are welded to connect, longitudinal supporting plate 95 is welded to connect with the outer rear head in shell 6, intermediate support axle sleeve 97 is arranged between support sleeve 96 and back shaft 91, this intermediate support axle sleeve is set on back shaft, and the bottom of this intermediate support axle sleeve is formed with boss 971, this boss 971 offsets with the inner side surface of support sleeve 96.
Further, the forward and backward end socket outer wall of described inner bag 5 is respectively equipped with molecular sieve 10; The rear head inwall of described shell is provided with palladium oxide 7.
Further, also comprise anti-overfilling device 8, it comprises anti-overfilling end socket 81 and anti-overfilling cylindrical shell 82; Aperture 8c is had) bottom anti-overfilling end socket 81.
Further, anti-overfilling cylindrical shell 82 one end and anti-overfilling end socket 81 are welded to connect, and the rear head of the other end and described inner bag 5 is welded to connect; The volume of this anti-overfilling device 8 is 10% of gas cylinder total measurement (volume).
Further, described front end support device 2 is connected with inner bag front head by positioning block 25a, and this front head is provided with four through holes, to be separately installed with in positioning block 25a, bottle in liquid inlet pipe 12, bottle drain pipe 14 for subsequent use in blow-down pipe 13 and bottle in through hole; In bottle, in liquid inlet pipe 12, bottle, blow-down pipe 13 is connected with inner bag inner barrel by dunnage A2 with drain pipe 14 for subsequent use in bottle.
A kind of heavy truck, adopts any one above-mentioned Vehicular liquefied natural gas cylinder.
In sum, the present invention have changed the fluid mode of existing product, and compensate for the deficiencies in the prior art and defect, and novel in design unique, structure is ingenious, easy to utilize, has good social economic benefit.
Accompanying drawing explanation
Fig. 1 is the sectional structure schematic diagram of Vehicular liquefied natural gas cylinder of the present invention;
Fig. 2 is the sectional structure schematic diagram of cryopump sleeve means of the present invention;
Fig. 3 is the sectional structure schematic diagram of inner barrel in front support structure of the present invention;
Fig. 4 is the sectional structure schematic diagram of front support structure of the present invention;
Fig. 5 is the sectional structure schematic diagram along BB line in Fig. 3;
Fig. 6 is the left TV structure schematic diagram of front support structure of the present invention;
Fig. 7 is the perspective view of valve seat of the present invention;
Fig. 8 is the sectional structure schematic diagram of rear end of the present invention supporting structure;
Fig. 9 is the sectional structure schematic diagram of anti-overfilling device of the present invention.
Embodiment
Below in conjunction with accompanying drawing, the present invention is described further.
As shown in Figure 1, this kind of Vehicular liquefied natural gas cylinder, comprise shell 6, inner bag 5, cryopump 1 and level meter 3, inner bag and shell are all provided with forward and backward end socket, adiabatic space 12 is formed between shell 6 and inner bag 5, inner bag 5 is connected on shell 6 respectively by front end support device 2, cryopump sleeve means 4 and rear end support device 9, and front end support device 2 and cryopump sleeve means 4 are rigid support, and rear end support device 9 is soft supporting.
Shown in composition graphs 1 ~ 3, this cryopump sleeve means 4 comprises inner barrel 41 and outer barrel 42, and inner barrel 41 is arranged in outer barrel 42 inner chamber, this inner barrel 4 is divided into three parts, its top is provided with flange plate 411, and middle part is provided with thin walled tube 412, and bottom is provided with base 413.Base 413 is provided with cone shape hole 413a and groove 413b.On the outer wall of thin walled tube 412, and between flange plate 411 and base 413, be wound with a circle thermal-protective coating 43, this thermal-protective coating adopts the heat insulation glass fibre paper material of low temperature to make, and effectively can reduce the leakage heat of cryopump sleeve means.The bottom of this outer barrel 42 is provided with through hole 42a and groove 42b.The bottom of this outer barrel 42 and the base 413 of inner barrel 41 locate rear built-up welding by through hole 42a and cone shape hole 413a, again in groove 42b and the welding of 413b place, therefore, heat-transfer path is after the base 413 and thin walled tube 412 of inner barrel 41, be delivered to front end flange 411 place by outer barrel 42 thin-walled, greatly increases thermally conductive pathways.Between described thermal-protective coating 43 and described outer barrel 42, be provided with clearance layer 4L be used for vacuumizing.The cone shape hole 413a quantity that base 413 is provided with is 2 ~ 6, and quantity is preferably 4.The number of openings that outer barrel 42 is provided with is 2 ~ 6, is preferably 4, need be consistent with the quantity of cone shape hole 413a.Flange plate 411 end face of described inner barrel 41 is provided with a circle seal groove 411b and multiple tapped hole 411a, is used for being connected with cryopump.The quantity of this tapped hole is 3 ~ 6, and be preferably 4, the circumference along described flange plate is evenly arranged.Thin walled tube 412 wall thickness of inner barrel 41 is 1 ~ 3mm, and be preferably 1.5mm, the wall thickness of described outer barrel 42 is 3 ~ 5mm, and be preferably 4mm, the wall thickness of described thermal-protective coating 43 is 10 ~ 14mm, is preferably 12mm.
In addition, as shown in Figure 1, this cryopump sleeve means 4 and the angle of the axial direction of natural gas cylinder are 10 ° ~ 29 ° (namely when gas cylinder is laterally placed, gas cylinder axis are parallel with horizontal line, angle between cryopump sleeve means and horizontal line), this angle is preferably 29 °.This outer barrel 42 supports fixing by the first dunnage A1.First dunnage A1 is vertical with outer barrel 42 and be fixed on the front head of described inner bag 5.
Shown in composition graphs 1, Fig. 4, Fig. 5, Fig. 6 and Fig. 7, this front support structure comprises valve seat 21, first supporting sleeve 22, intermediate support pipe 23 and the second supporting sleeve 25, and eliminates support neck tube connecting cover.One welding edges of valve seat 21 and the first supporting sleeve 22, the other end of first supporting sleeve 22 is connected with one end of this intermediate support pipe 23, the other end of intermediate support pipe 23 is connected with one end of the second supporting sleeve 25, the other end of the second supporting sleeve 25 is provided with positioning block 25a, welds with cylinder liner front head.Intermediate support pipe is arranged between the first supporting sleeve 22 and the second supporting sleeve 25, and the first supporting sleeve 22 is not directly contacted with the second supporting sleeve 25, namely the first supporting sleeve 22 and the second supporting sleeve 25 tool at regular intervals.This intermediate support pipe 23 is connected with bolt 24 and nut 26 with the end of the first supporting sleeve 22 and the second supporting sleeve 24 respectively, and bolt quantity is 2.In addition the fiber glass epoxy that intermediate support pipe 23 is D3848 by model is made, the low and material that rigidity is strong for heat conductivity.In order to reduce heat trnasfer further, the wall thickness of this intermediate support pipe 23 is all greater than the wall thickness of the first supporting sleeve 22 and the second supporting sleeve 25.And offer on the outer wall of intermediate support pipe 3 and vacuumize through hole 23a.
Shown in composition graphs 4 ~ 7, valve seat 21 offers inlet opening 21f, liquid outlet opening 21d, relieving device 21b, main safety valve hole 21e, pressure gauge hole 21c and the safe valve opening 21a of pair, inlet opening 21f, liquid outlet opening 21d, relieving device 21b respectively with the axis being parallel of valve seat 21, this main safety valve hole 21e is communicated with inlet opening 21f, secondary safe valve opening 21a, pressure gauge hole 21c are communicated with relieving device 21b, the safe valve opening 21a of safe valve opening 21e, pressure gauge hole 21c and pair respectively with the axes normal of valve seat 1.One end of liquid inlet pipe 210 is connected with the inlet opening 21f on valve seat 21, the other end is connected with joint 27, one end of blow-down pipe 28 is connected with the relieving device 21b on valve seat 21, the other end is connected with joint 27, liquid outlet opening 21d on one end of drain pipe 29 and valve seat 21, the other end is connected with joint 27, and Placement is welding; Described second supporting sleeve 25 is provided with positioning block 25a, is convenient to assembling and positioning.
Composition graphs 1 and Fig. 8, this rear end supporting structure comprises: the rear head of back shaft 91, support pipe cap 92, inner bag 5, the rear head of shell 6, longitudinal supporting plate 95, support sleeve 96 and intermediate support axle sleeve 97.The rear head and the back shaft 91 that support pipe cap 92 and inner bag 5 are welded to connect, support sleeve 96 and longitudinal supporting plate 95 are welded to connect, longitudinal supporting plate 95 is welded to connect with the rear head of shell 6, this intermediate support axle sleeve 97 is arranged between support sleeve 96 and back shaft 91, this intermediate support axle sleeve 97 is set on back shaft 91, and the bottom of this intermediate support axle sleeve 97 is formed with boss 971, the inner side surface of this boss and support sleeve 96 offsets, this support sleeve inner side surface is equivalent to outer side surface, inner side surface is towards support pipe cap 92, and outer side surface is at the bottom of bottle.The fiber glass epoxy that this intermediate support axle sleeve 97 is D3848 by model is made, Spielpassung between this intermediate support axle sleeve 97 and described back shaft 91, and interference fit between described support sleeve 96.This intermediate support axle sleeve thermal conductivity is low, makes have the low material of thermal conductivity between stainless steel support thus effectively reduce heat trnasfer.Because intermediate support axle sleeve 97 material is fiber glass epoxy, thermal conductivity is little, thus raising thermal resistance, namely between support sleeve 96 and back shaft 91, increase intermediate support axle sleeve 97 can improve the thermal resistance that rear end supports conduction process, thus effectively reduce the leakage heat of Vehicular liquefied natural gas cylinder, reduce the static evaporation rate of gas cylinder.
In addition, in order to prevent intermediate support axle sleeve 97 at axial float, described back shaft 91 is arranged with rear end support limit plate 98, this rear end support limit plate 98 blocks described intermediate support axle sleeve 97, and is welded to connect with described support sleeve 96.The outer wall supporting pipe cap 92 is provided with topping up through hole 92a, facilitates charge and discharge liquid.
Composition graphs 1 and Fig. 9, this gas cylinder also comprises anti-overfilling device 8, and it is made up of anti-overfilling end socket 81 and anti-overfilling cylindrical shell 82.This anti-overfilling cylindrical shell 82 one end and anti-overfilling end socket 81 are welded to connect, and the rear head of the other end and described inner bag 5 is welded to connect; Aperture 8c is had bottom described anti-overfilling end socket 81.The volume of this anti-overfilling device 8 is 10% of gas cylinder total measurement (volume).
As shown in Figure 1, the forward and backward end socket outer wall of described inner bag 5 is equipped with molecular sieve 10, and it act as the high molecular particles such as adsorbed water when vacuumizing, methyl alcohol, ethanol, hydrogen sulfide, sulfur dioxide, carbon dioxide, thus ensures the degree of vacuum of adiabatic space 12.The rear head inwall of described shell 6 is provided with palladium oxide 7.It act as absorption mezzanine space and welds remaining toxic gas.Wherein molecular sieve and palladium oxide are granular, can directly amplexiform on gas cylinder inwall, also by being arranged on gas cylinder inwall after wire netting parcel.
In addition, the front head of described inner bag 5 is provided with four through holes, to be provided with in the positioning block 25a on the second supporting sleeve 25, bottle in liquid inlet pipe 12, bottle drain pipe 14 for subsequent use in blow-down pipe 13 and bottle in through hole, its Placement is and is welded to connect.Positioning block 25a is positioned at front head center, for the location of front end support device 2; In bottle, in liquid inlet pipe 15 and bottle, blow-down pipe 14 is positioned at the top of inner bag 5, and is fixed on the cylindrical shell of inner bag 5 with dunnage A2; In described bottle, drain pipe 16 for subsequent use is positioned at the bottom of inner bag 5, and is fixed on the cylindrical shell of inner bag 5 with dunnage A2, and in bottle, drain pipe 16 for subsequent use uses when cryopump 1 breaks down.
The invention provides a kind of Vehicular liquefied natural gas cylinder and this heavy truck, cryopump connecting fluid pressure control system, split type inner barrel comprises flange plate, thin walled tube, base, and thin walled tube outer wall is provided with thermal-protective coating between flange plate and base; Outer barrel and inner barrel are located by corresponding cone shape hole and through hole and are piled postwelding, then form groove respectively bottom inside and outside sleeve, and after connecting, the composition word of falling V welds again; Multifunctional perforated on valve seat in front end support device, installs liquid inlet pipe, drain pipe, blow-down pipe, level meter pipe or safety valve pipe in hole, is provided with anti-overfilling end socket and anti-overfilling cylindrical shell, has aperture bottom anti-overfilling end socket; Rear end support device offers aperture on support end socket, thus support end socket inner space is communicated with bottle space; Rear end support sleeve material is fiber glass epoxy; Before and after inner bag, end socket is equipped with molecular sieve; Shell rear head is provided with palladium oxide; The present invention firmly can install cryopump effectively can reduce again leakage heat.
It should be noted that; embodiment is only explanation to technical solution of the present invention and explanation; should not be understood as the restriction to technical solution of the present invention, any employing technological scheme of the present invention and only do local change, must fall within the scope of protection of the present invention.
Claims (16)
1. a Vehicular liquefied natural gas cylinder, comprise shell (6), inner bag (5) and cryopump (1), adiabatic space (11) is formed between shell (6) and inner bag (5), inner bag (5) is respectively by front end support device (2), cryopump sleeve means (4) and rear end support device (9) are connected on shell (6), cryopump sleeve means (4) comprises inner barrel (41) and outer barrel (42), cryopump connecting fluid pressure control system, cryopump (1) is fixed on flange plate (411), it is characterized in that, inner barrel (41) adopts split type structure, comprise three parts, its top is provided with flange plate (411), middle part is provided with thin walled tube (412), bottom is provided with base (413), on thin walled tube (412) outer wall of inner barrel (41), and thermal-protective coating (43) is provided with between flange plate (411) and base (412).
2. Vehicular liquefied natural gas cylinder according to claim 1, is characterized in that, the bottom of outer barrel (42) is provided with through hole (42a), and bottom is provided with the first groove (42b); Be arranged with cone shape hole (413a) outside base (412) on inner barrel, bottom is provided with the second groove (413b); After outer barrel and inner barrel assemble, cone shape hole one-tenth as a whole hole corresponding to through hole, first, second groove is connected to form reverse V-shaped interface, locate at cone shape hole (413a) and through hole (42a) and pile postwelding, in the second groove (413b) and the welding of the first groove (42b) place.
3. Vehicular liquefied natural gas cylinder according to claim 2, it is characterized in that, cryopump sleeve means (4) is 10 ° ~ 29 ° with the angle of gas cylinder axial direction, and described outer barrel (42) supports fixing by the first dunnage (A1).
4. Vehicular liquefied natural gas cylinder according to claim 3, it is characterized in that, the angle of described cryopump sleeve means (4) and gas cylinder axial direction is 29 °, and the first dunnage (A1) is vertical with outer barrel and be fixed on the front head of inner bag.
5. any one the Vehicular liquefied natural gas cylinder according to Claims 1-4, it is characterized in that, described thermal-protective coating (43) is for glass fiber paper and be provided with clearance layer (4L) between thermal-protective coating (43) and outer barrel (42); Flange plate (411) end face of this inner barrel (41) is provided with a circle seal groove (411b) and multiple tapped hole (411a), for being connected with described cryopump (1).
6. Vehicular liquefied natural gas cylinder according to claim 5, is characterized in that, the quantity of described cone shape hole (413a) is 2 ~ 6mm; Thin walled tube (412) wall thickness of described inner barrel (41) is 1 ~ 3mm; The wall thickness of described outer barrel (42) is 3 ~ 5mm; The wall thickness of described thermal-protective coating (43) is 10 ~ 14mm; The quantity of described tapped hole (411a) is 3 ~ 6, and the circumference along described flange plate is evenly arranged.
7. according to the Vehicular liquefied natural gas cylinder of any one described in claim 1 to 6, it is characterized in that, front end support device (2) is provided with intermediate support pipe (23), this intermediate support pipe is arranged between the first supporting sleeve (22) and the second supporting sleeve (25), make the first supporting sleeve (22) and the second supporting sleeve (25) tool at regular intervals, a welding edges of valve seat (21) and the first supporting sleeve (22).
8. Vehicular liquefied natural gas cylinder according to claim 7, it is characterized in that, described intermediate support pipe (23) is made up of fiber glass epoxy, and the wall thickness of this intermediate support pipe (23) is greater than the wall thickness of the first supporting sleeve (22) and the second supporting sleeve (25) respectively; Intermediate support pipe (23) is connected with bolt (24) with the end of the first supporting sleeve (22) and the second supporting sleeve (25) respectively, and fastening with nut (26); The outer wall of described intermediate support pipe (23) offers and vacuumizes through hole (23a); The material of described bolt (24) and nut (26) is preferably stainless steel, and with connect with the end points of the first supporting sleeve (22) and the second supporting sleeve (25) is soldered respectively.
9. any one the Vehicular liquefied natural gas cylinder according to claim 7 or 8, it is characterized in that, described valve seat (21) offers inlet opening (21f), liquid outlet opening (21d), relieving device (21b), main safety valve hole (21e), pressure gauge hole (21c) and the safe valve opening of pair (21a), inlet opening (21f), liquid outlet opening (21d), relieving device (21b) respectively with the axis being parallel of valve seat (21), this main safety valve hole (21e) is communicated with inlet opening (21f), secondary safe valve opening (21a), pressure gauge hole (21c) is communicated with relieving device (21b), safe valve opening (21e), pressure gauge hole (21c) and the safe valve opening of pair (21a) respectively with the axes normal of valve seat (21), one end of described liquid inlet pipe (210) is connected with the inlet opening (21f) on valve seat (21), the other end is connected with joint (27), one end of blow-down pipe (28) is connected with the relieving device (21b) on valve seat (21), the other end is connected with joint (27), liquid outlet opening (21d) on one end of drain pipe (29) and valve seat (21), the other end is connected with joint (27), and Placement is welding, described second supporting sleeve (25) is provided with positioning block (25a), is convenient to assembling and positioning.
10. according to the Vehicular liquefied natural gas cylinder of any one described in claim 1 to 9, it is characterized in that, the intermediate support axle sleeve (97) of rear end support device (9) is made up of fiber glass epoxy, Spielpassung between this intermediate support axle sleeve (97) and described back shaft (91), and interference fit between described support sleeve (96); Support limit plate (98) is set in the rear end on described back shaft (91), described intermediate support axle sleeve (97) is blocked in this rear end support limit plate (98), and is welded to connect with described support sleeve (96); The outer wall of described support pipe cap (92) is provided with topping up through hole (92a).
11. Vehicular liquefied natural gas cylinders according to claim 10, it is characterized in that, rear end support device comprises: back shaft (91), support pipe cap (92), longitudinal supporting plate (95), support sleeve (96) and intermediate support axle sleeve (97), support pipe cap (92) to be welded to connect with the interior rear head in inner bag (5) and back shaft (91), support sleeve (96) and longitudinal supporting plate (95) are welded to connect, longitudinal supporting plate (95) is welded to connect with the outer rear head in shell (6), intermediate support axle sleeve (97) is arranged between support sleeve (96) and back shaft (91), this intermediate support axle sleeve (97) is set on back shaft (91), and the bottom of this intermediate support axle sleeve (97) is formed with boss (971), this boss (971) offsets with the inner side surface of support sleeve (96).
12., according to the Vehicular liquefied natural gas cylinder of any one described in claim 1 to 11, is characterized in that, the forward and backward end socket outer wall of described inner bag (5) is respectively equipped with molecular sieve (10); The rear head inwall of described shell (6) is provided with palladium oxide (7).
13., according to the Vehicular liquefied natural gas cylinder of any one described in claim 1 to 12, is characterized in that, also comprise anti-overfilling device (8), and it comprises anti-overfilling end socket (81) and anti-overfilling cylindrical shell (82); Anti-overfilling end socket (81) bottom has aperture (8c).
14. Vehicular liquefied natural gas cylinders according to claim 13, it is characterized in that, anti-overfilling cylindrical shell (82) one end and anti-overfilling end socket (81) are welded to connect, and the rear head of the other end and described inner bag (5) is welded to connect; The volume of this anti-overfilling device (8) is 10% of gas cylinder total measurement (volume).
15. according to the Vehicular liquefied natural gas cylinder of any one described in claim 1 to 14, it is characterized in that, described front end support device (2) is connected with inner bag front head by positioning block 25a, this front head is provided with four through holes, to be separately installed with in positioning block (25a), bottle in liquid inlet pipe (12), bottle drain pipe for subsequent use (14) in blow-down pipe (13) and bottle in through hole; In bottle, in liquid inlet pipe (12), bottle, blow-down pipe (13) is connected with inner bag inner barrel by dunnage (A2) with drain pipe (14) for subsequent use in bottle.
16. 1 kinds of heavy trucks, is characterized in that, adopt any one the Vehicular liquefied natural gas cylinder described in the claims 1 to 15.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201410415946.4A CN105443972B (en) | 2014-08-21 | 2014-08-21 | Vehicular liquefied natural gas cylinder and the heavy truck |
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| CN201410415946.4A CN105443972B (en) | 2014-08-21 | 2014-08-21 | Vehicular liquefied natural gas cylinder and the heavy truck |
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| CN105443972A true CN105443972A (en) | 2016-03-30 |
| CN105443972B CN105443972B (en) | 2018-11-06 |
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| CN108050379A (en) * | 2018-01-12 | 2018-05-18 | 江苏深绿新能源科技有限公司 | A kind of anti-overfilling device of big volume automobile using natural gas bottle |
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| CN109237300A (en) * | 2018-09-11 | 2019-01-18 | 中车西安车辆有限公司 | A kind of top assembly of vertical low temperature gas tank |
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| CN113028273A (en) * | 2021-01-26 | 2021-06-25 | 张家港富瑞深冷科技有限公司 | Gas cylinder with pump |
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| CN118270180A (en) * | 2024-06-04 | 2024-07-02 | 中太(苏州)氢能源科技有限公司 | Fixing structure for marine equipment, installation method thereof and storage container |
| CN118270180B (en) * | 2024-06-04 | 2024-09-27 | 中太(苏州)氢能源科技有限公司 | Fixing structure for marine equipment, installation method thereof and storage container |
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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. Address before: No.39 Xingfu North Road, Xi'an, Shaanxi 710201 Patentee before: SHAANXI AUTOMOBILE GROUP Co.,Ltd. Patentee before: XI'AN DESEN NEW ENERGY EQUIPMENT Co.,Ltd. |