CN109630865A - A kind of strain hardening LNG storage tank semitrailer - Google Patents

A kind of strain hardening LNG storage tank semitrailer Download PDF

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Publication number
CN109630865A
CN109630865A CN201811532552.1A CN201811532552A CN109630865A CN 109630865 A CN109630865 A CN 109630865A CN 201811532552 A CN201811532552 A CN 201811532552A CN 109630865 A CN109630865 A CN 109630865A
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CN
China
Prior art keywords
pressurd vessel
storage tank
inner pressurd
pressure
strain hardening
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Pending
Application number
CN201811532552.1A
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Chinese (zh)
Inventor
武常生
崔闻天
张娟
李桂苓
杨利芬
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Xinxing Energy Equipment Co Ltd
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Xinxing Energy Equipment Co Ltd
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Priority to CN201811532552.1A priority Critical patent/CN109630865A/en
Publication of CN109630865A publication Critical patent/CN109630865A/en
Pending legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C1/00—Pressure vessels, e.g. gas cylinder, gas tank, replaceable cartridge
    • F17C1/02—Pressure vessels, e.g. gas cylinder, gas tank, replaceable cartridge involving reinforcing arrangements
    • F17C1/08—Integral reinforcements, e.g. ribs
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C1/00—Pressure vessels, e.g. gas cylinder, gas tank, replaceable cartridge
    • F17C1/12—Pressure vessels, e.g. gas cylinder, gas tank, replaceable cartridge with provision for thermal insulation
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C13/00—Details of vessels or of the filling or discharging of vessels
    • F17C13/002—Details of vessels or of the filling or discharging of vessels for vessels under pressure
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C13/00—Details of vessels or of the filling or discharging of vessels
    • F17C13/08—Mounting arrangements for vessels
    • F17C13/083—Mounting arrangements for vessels for medium-sized mobile storage vessels, e.g. tank vehicles or railway tank vehicles
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C2201/00—Vessel construction, in particular geometry, arrangement or size
    • F17C2201/01—Shape
    • F17C2201/0104—Shape cylindrical
    • F17C2201/0109—Shape cylindrical with exteriorly curved end-piece
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C2201/00—Vessel construction, in particular geometry, arrangement or size
    • F17C2201/03—Orientation
    • F17C2201/035—Orientation with substantially horizontal main axis
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C2201/00—Vessel construction, in particular geometry, arrangement or size
    • F17C2201/05—Size
    • F17C2201/054—Size medium (>1 m3)
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C2203/00—Vessel construction, in particular walls or details thereof
    • F17C2203/01—Reinforcing or suspension means
    • F17C2203/011—Reinforcing means
    • F17C2203/012—Reinforcing means on or in the wall, e.g. ribs
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C2203/00—Vessel construction, in particular walls or details thereof
    • F17C2203/03—Thermal insulations
    • F17C2203/0304—Thermal insulations by solid means
    • F17C2203/0337—Granular
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C2203/00—Vessel construction, in particular walls or details thereof
    • F17C2203/03—Thermal insulations
    • F17C2203/0391—Thermal insulations by vacuum
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C2203/00—Vessel construction, in particular walls or details thereof
    • F17C2203/06—Materials for walls or layers thereof; Properties or structures of walls or their materials
    • F17C2203/0602—Wall structures; Special features thereof
    • F17C2203/0612—Wall structures
    • F17C2203/0626—Multiple walls
    • F17C2203/0629—Two walls
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C2203/00—Vessel construction, in particular walls or details thereof
    • F17C2203/06—Materials for walls or layers thereof; Properties or structures of walls or their materials
    • F17C2203/0634—Materials for walls or layers thereof
    • F17C2203/0636—Metals
    • F17C2203/0639—Steels
    • F17C2203/0643—Stainless steels
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C2203/00—Vessel construction, in particular walls or details thereof
    • F17C2203/06—Materials for walls or layers thereof; Properties or structures of walls or their materials
    • F17C2203/0634—Materials for walls or layers thereof
    • F17C2203/0636—Metals
    • F17C2203/0648—Alloys or compositions of metals
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C2205/00—Vessel construction, in particular mounting arrangements, attachments or identifications means
    • F17C2205/03—Fluid connections, filters, valves, closure means or other attachments
    • F17C2205/0302—Fittings, valves, filters, or components in connection with the gas storage device
    • F17C2205/0338—Pressure regulators
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C2205/00—Vessel construction, in particular mounting arrangements, attachments or identifications means
    • F17C2205/03—Fluid connections, filters, valves, closure means or other attachments
    • F17C2205/0302—Fittings, valves, filters, or components in connection with the gas storage device
    • F17C2205/0352—Pipes
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C2221/00—Handled fluid, in particular type of fluid
    • F17C2221/03—Mixtures
    • F17C2221/032—Hydrocarbons
    • F17C2221/033—Methane, e.g. natural gas, CNG, LNG, GNL, GNC, PLNG
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C2270/00—Applications
    • F17C2270/01—Applications for fluid transport or storage
    • F17C2270/0165—Applications for fluid transport or storage on the road
    • F17C2270/0168—Applications for fluid transport or storage on the road by vehicles

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Filling Or Discharging Of Gas Storage Vessels (AREA)

Abstract

The invention discloses a kind of strain hardening LNG storage tank semitrailers applied to natural gas transportation field.The inner pressurd vessel of the semitrailer storage tank is manufactured through strain hardening technique, and strain deformation rate is not more than 3%, pressure-bearing 1.0MPa, thickness 5.5mm, volume 52m3；It is welded with stiffening ring in inner pressurd vessel, inner pressurd vessel is divided into the deformation section that longitudinal pitch is 750mm.The swash plate welded on stiffening ring is arch, corrugated or " it " shape, reduces the constraint deformed to inner pressurd vessel, is convenient for homogeneous deformation.Storage tank can realize that liquid is unloaded in pressurization from pressure piping, reduce the Meteorological at gas station；Tank body bearing capacity increases, and safety coefficient increases；Tank weight reduces, and improves conevying efficiency；Stiffening ring is easy to accurately control the homogeneous deformation amount of inner pressurd vessel；The present invention has accomplished energy-saving in State-level.

Description

A kind of strain hardening LNG storage tank semitrailer
Technical field
The present invention is applied to LNG transport field, is related to a kind of LNG storage tank semitrailer of strain hardening, is mainly used for LNG high Pressure transport, and have self-unloading function.
Background technique
With the development that national prevention and control of air pollution works, " coal changes gas " project starts spread overwide areas.Cryogenic natural gas The demand of liquid LNG transport vehicle increases rapidly.LNG conveying semi-trailer design pressure currently on the market be 0.65 MPa or 0.7MPa, since pressure is lower, semitrailer is transported to the field of employment LNG, carries out unloading liquid operation using cryogenic pump.It is superfluous that this unloads liquid system Numerous, higher cost, less to LNG usage amount is local obvious uneconomical.In addition, the pressure-bearing pressure of semitrailer storage tank is lower, fortune During defeated, LNG gasification causes tank inner pressure to rise, the safety relief system discharging decompressing of storage tank, to cause LNG resource Waste.Comprehensively consider above each factor, urgent need is developed a kind of with self-unloading ability, elevated pressures LNG transport vehicle.It is right at present In the LNG conveying semi-trailer of the high conevying efficiency greater than 50 cubes, when design pressure is 1.0MPa, rule-based design method Calculated LNG conveying semi-trailer wall thickness is larger, and about 10mm causes weight in working order larger, and about 20 tons, according to 90% filling rate LNG is loaded, always weighs about 43.5 tons, exceeds 40 tons of 1589 load-carrying limit value of standard GB/T.
Summary of the invention
The present invention to solve the above-mentioned problems, provide it is a kind of use strain hardening LNG storage tank semitrailer, by using answering Become reinforcement technique, improve storage tank pressure-bearing pressure, reduces tank weights, and by realizing self-unloading from pressure piping.
The technical solution used in the present invention is:
The storage tank of the strain hardening LNG storage tank semitrailer includes inner pressurd vessel, outer container, vacuum interlayer and pipe-line system, inner pressurd vessel It is manufactured using S30408 material through strain hardening technique, strain deformation rate is no more than 3%, inner pressurd vessel pressure-bearing 1.0MPa, diameter 2280mm, length 11250mm, thickness 5.5mm, volume 52m3；It is welded with stiffening ring in the inner surface of inner pressurd vessel, by inner pressurd vessel point Deformation rate is accurately controlled at the deformation section that longitudinal pitch is 750mm in favor of the homogeneous deformation of inner pressurd vessel.
Further, welding three layers of swash plate of upper, middle and lower in interval on the stiffening ring, the swash plate are the bow of flexible structure Shape, corrugated or " it " shape, the shape can reduce the constraint to inner pressurd vessel deformation, be conducive to homogeneous deformation.
Further, the pipe-line system of storage tank includes with gasification pressurization device from pressure piping, it can be achieved that liquid is unloaded in pressurization.
The beneficial effects of the present invention are: tank body bearing capacity increases, safety coefficient increases, and reduces gas discharge；Tank body Weight reduces, and improves conevying efficiency；Liquid is unloaded using from pressure piping, reduces the Meteorological at gas station；In stiffening ring control The homogeneous deformation amount of container；The swash plate of flexible structure does not interfere the homogeneous deformation of inner pressurd vessel；Alloy and energy have been saved for country Source.
Detailed description of the invention
Fig. 1 is inner pressurd vessel structural schematic diagram；
Fig. 2 is arch swash plate schematic top plan view；
Fig. 3 is corrugated swash plate schematic top plan view；
Fig. 4 is " it " shape swash plate schematic top plan view；
In figure, 1- inner pressurd vessel, 2- stiffening ring, 3- swash plate, 4- inlet tube, 5- are from pressure piping air inlet pipe, 6- from pressure piping Outlet tube.
Specific embodiment
The storage tank of LNG conveying semi-trailer is low-temperature storage tank, is divided into double-layer structure, is formed by inner pressurd vessel is nested with outer container, Centre is vacuum interlayer, fills pearlife thermal insulation material, and inner pressurd vessel material is austenitic stainless steel S30408, and outer container material is Low-alloy steel Q345R.
The existing LNG low-temperature storage tank for being mounted on volume on LNG conveying semi-trailer and being greater than 50 cubes, inner pressurd vessel pressure-bearing 0.65- 0.7MPa, wall thickness 6mm, diameter 2350 mm, length 11245mm, storage tank always weigh about 12.4 tons, 16.7 tons of gross weight are equipped, according to state 40 tons of limit for tonnage calculating of mark, 23.3 tons of maximum load volume.
The inner pressurd vessel design pressure of LNG low-temperature storage tank used in strain hardening storage tank LNG transport vehicle of the present invention is 1.0MPa, is answered Become volume 52m3 after strengthening, having a size of diameter 2280mm, length 11250mm, thickness 5.5mm before strain hardening, storage tank is always weighed about 11.7 tons, 16 tons of gross weight are equipped, 24 tons of maximum load volume.It is 1.0MPa in design pressure if not using strain hardening technology Under conditions of, inner pressurd vessel wall thickness is 10mm, and 15.8 tons of storage tank gross weight, whole equipment weight is greater than 20.1 tons, maximum load volume 19.9 tons.For convenience of understanding, above-mentioned data comparison be see the table below.
Pressure-bearing (MPa) Thickness (mm) Length (mm) Diameter (mm) Tank weights (ton) It equips weight (ton) Maximum carrier gas weight (ton)
Existing storage tank 0.65 6 11245 2350 12.4 16.7 23.3
Strain hardening high pressure storage tank 1.0 5.5 11250 2280 11.7 16 24
The identical storage tank of pressure-bearing 1.0 10 11245 2350 15.8 20.1 19.9
Safety valve set pressure in storage tank pipe-line system is 1.05-1.1 times of design pressure, strain hardening storage of the present invention For tank compared with original storage tank, inner pressurd vessel design pressure is increased to 1.0MPa, correspondingly, safety valve setting by 0.65-0.7MPa Pressure is increased to 1.1MPa by 0.76MPa.In this way, safety valve pressure release cracking pressure improves in LNG transportational process, pressure release row The time put is delayed by, will not even pressure release open, thus reduce or prevented LNG air venting discharge, avoid LNG wave Take, it is energy saving.
The present embodiment inner pressurd vessel is manufactured using strain hardening technology, and strain hardening is to utilize austenitic stainless steel tensile strength It is high, yield strength is low, the new technology that has the characteristics that larger plasticity storage and research and develop.Using higher hydraulic test pressure, make Austenitic stainless steel inner pressurd vessel generates plastic strain, and the intensity of stainless steel is improved using material strain hardening characteristics, improves content The bearing capacity of device improves the allowable design stress of inner pressurd vessel, so that the wall thickness of inner pressurd vessel be thinned, mitigate inner pressurd vessel and storage tank Weight.
The inner pressurd vessel material of the present embodiment is S30408, and when no strain hardening designs, allowable stress value is 147MPa, is answered Become enhanced deformation rate and be not more than 3%, after deformation, allowable design stress value is 270MPa, is nearly doubled.Inner pressurd vessel wall thickness is 5.5mm, 14.3 tons of storage tank gross weight, whole equipment is less than 16 tons.
As shown in Fig. 1, in the inner surface of inner pressurd vessel 1, design has multiple stiffening rings 2, inner pressurd vessel is longitudinally divided into spacing The uniform multiple deformation sections of 600-1000mm.When spacing is more than 1000mm, the strain of each deformation section is not easy equal control, when When away from being less than 600mm, stiffening ring reinforces the restrictive function that inner pressurd vessel strains, and answers pressure changeable higher, causes energy waste.This reality Apply the practical stiffening ring of example 13, distance between stiffening rings is about 750mm, and stiffening ring is molding band steel, material S30408, stiffening ring with it is interior The T shape groove of inner surface of container is double groove, is welded using full penetration technique.When stress deformation, in inner pressurd vessel receiving Compression swelling, since stiffening ring rigidity is stronger, each deformation section under pressure, is respectively deformed, and realizes inner pressurd vessel change The equal control of shape amount.Meanwhile using the biggish section rigidity of stiffening ring, change of inner pressurd vessel during strain hardening is limited Shape amount.When spacing is 750mm or so, deflection is easier to be accurately controlled within 3%.
Swash plate 3 is the plate-shaped means being fixed on inside liquid transporting container, and the transporting direction of plane and transport vehicle hangs down Directly, the effect of swash plate is to prevent liquid from generating violent concussion during transportation, increases the stationarity of transport.The present embodiment is anti- Wave plate is welded on evenly spaced 7 stiffening rings, is divided into three layers of upper, middle and lower.Swash plate is relatively thin, is welded into stiffening ring whole Body structure, when inner pressurd vessel 1 strains, very big to the constraint of inner pressurd vessel 1, radial deformation is uneven.To prevent from causing swash plate Swash plate more evenly, is designed as the flexible structure of bent intermediate by tearing damage, inner pressurd vessel radial strain, as shown in Fig. 2 Arch, it is attached shown in Fig. 3 corrugated, or the both ends of swash plate 3 are welded on to " it " as shown in Fig. 4 on adjacent stiffening ring Shape.
The present embodiment is additionally arranged from pressure piping in pipe-line system, and storage tank unloads liquid without using the cryogenic pump in station, and adopts Liquid is unloaded from pressure piping with this.It is located at 1 bottom of inner pressurd vessel from pressure piping outlet tube 6, is located at content from pressure piping air inlet pipe 5 At the top of device, design has gasification pressurization device on pipeline.When LNG pressure is higher in storage tank, it can rely on pressure itself will be in storage tank LNG liquid extrudes tank car by outlet tube road.The liquid later period is being unloaded, when tank inner pressure is lower, from the gasification on pressure piping Booster gasifies the LNG liquid for flowing into from storage tank from pressure piping outlet tube 6 to be pressurized for gas, pressurized gas It is sent into storage tank from from pressure piping air inlet pipe 5, so that tank inner pressure, which improves realization, unloads liquid.
The direct beneficial effect of the present invention is pressurization loss of weight, and inner pressurd vessel high-pressure thin-wall, tank weights reduce, and hauled weight increases Adding, improves the economic benefits of transportation efficiency, empty wagons fuel consumption per hundred kilometers at least reduces by 120 yuan, under conditions of vehicle transport weight limits, Single freight volume can transport 5 tons more, meet the transport needs of user, and in the higher situation of set-pressure, LNG gasification release It less or does not diffuse, has saved user cost.
Storage tank bearing capacity increases to 1.0MPa, safety relief pressure increase, so that the safety coefficient of storage tank by 0.7 MPa Increase, semitrailer safe transportation.Storage tank bearing capacity increases, and is possibly realized using from pressure piping, can be real from pressure piping Liquid is now unloaded automatically, is not used cryogenic pump, is reduced the equipment investment of gas station user.
Homogeneous deformation is strained using stiffening ring control inner pressurd vessel, when the spacing of stiffening ring is 750mm, inner pressurd vessel should become different In being accurately controlled in 3% hereinafter, stable product quality, production efficiency increases, while stiffening ring also acts as stability of external pressure and reinforcement The effect of inner pressurd vessel, by reasonable Arrangement LNG liquid inlet, stiffening ring can also play the role of slowing down media impingement.
For the band steel stiffening ring of full penetration instead of the angle steel supporting rib being intermittently welded, one reduces material utilization amount, and two Welding difficulty is reduced, cleaning sand grains is easy after three solution treatment derustings by sandblasting.
" it " shape swash plate can prevent LNG liquid transport fluctuation concussion in the front-back direction, can also partially prevent a left side The fluctuation of right direction is shaken, so that transport is more stable when speed change, turning round.
The present invention is subsidized, project number 2017YFC0805602 by " state key research and development plan ", for State-level, The present invention has accomplished energy-saving from alloy, the saving of oil consumption and natural gas discharge etc..First is that inner pressurd vessel reduce it is stainless The usage amount of steel saves the strategic alloy material such as Cr, Ni.Under the conditions of identical pressure-bearing, the usage amount of a stainless steel tank subtracts 4 tons few, i.e. reduction pure nickel plate dosage 360kg reduces pure chromium dosage 720kg.Stainless steel per ton on cost comes for 1.5 ten thousand yuan/ton It calculates, separate unit saves 60,000 yuan of production cost.Second is that as many as empty wagons transport fuel consumption per hundred kilometers 20L is reduced, even if public by traveling 100,000 In calculate, can be 20,000 liters of saving fuel oil.Third is that bearing capacity increases, the gas discharge of natural gas is reduced or avoided, reduces to clean The waste in net energy source.

Claims (3)

1. a kind of strain hardening LNG storage tank semitrailer, storage tank includes inner pressurd vessel, outer container, vacuum interlayer and pipe-line system, interior Container material quality is S30408, it is characterised in that: the inner pressurd vessel is manufactured using strain hardening technique, and strain deformation rate is not more than 3%, pressure-bearing 1.0MPa, thickness 5.5mm, volume 52m3；The inner surface of the inner pressurd vessel is welded with stiffening ring, and inner pressurd vessel is divided into Longitudinal pitch is the deformation section of 750mm.
2. a kind of strain hardening LNG storage tank semitrailer according to claim 1, it is characterised in that: between on the stiffening ring Every welding three layers of swash plate of upper, middle and lower, the swash plate is the arch or corrugated or " it " shape of flexible structure.
3. a kind of strain hardening LNG storage tank semitrailer according to claim 1, it is characterised in that: the pipe-line system packet It includes with gasification pressurization device from pressure piping.
CN201811532552.1A 2018-12-14 2018-12-14 A kind of strain hardening LNG storage tank semitrailer Pending CN109630865A (en)

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CN112128606A (en) * 2020-10-30 2020-12-25 宁波明欣化工机械有限责任公司 Low-temperature liquid tank car or tank box inner tank and strain-strengthened water inlet and drainage process thereof

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PL219796B1 (en) * 2012-01-17 2015-07-31 Edward Lisowski Cryogenic tank column
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PL219796B1 (en) * 2012-01-17 2015-07-31 Edward Lisowski Cryogenic tank column
CN202769267U (en) * 2012-08-10 2013-03-06 中国国际海运集装箱(集团)股份有限公司 Liquefied gas transport semi-trailer tank body
CN102980024A (en) * 2012-11-14 2013-03-20 西安轨道交通装备有限责任公司 Swash plate for low temperature vessel
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CN207065067U (en) * 2017-07-07 2018-03-02 新兴能源装备股份有限公司 A kind of LNG horizontal low temperatures storage tank
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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112128606A (en) * 2020-10-30 2020-12-25 宁波明欣化工机械有限责任公司 Low-temperature liquid tank car or tank box inner tank and strain-strengthened water inlet and drainage process thereof

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