CN101915356B - LNG storage tank for diesel-LNG hybrid power ship - Google Patents
LNG storage tank for diesel-LNG hybrid power ship Download PDFInfo
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- CN101915356B CN101915356B CN201010252953A CN201010252953A CN101915356B CN 101915356 B CN101915356 B CN 101915356B CN 201010252953 A CN201010252953 A CN 201010252953A CN 201010252953 A CN201010252953 A CN 201010252953A CN 101915356 B CN101915356 B CN 101915356B
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Abstract
The invention discloses an LNG storage tank for a diesel-LNG hybrid power ship. The LNG storage tank comprises a sealed shell and a sealed inner container arranged in the shell, wherein the shell is provided with a first LNG filling pipe communicated with the bottom of the inner container; the inner container is supported in the shell through a plurality of glass steel pipe struts, and a heat insulation layer is wound on the inner container; an interlayer between the shell and the inner container is vacuum; the middle part of the inner container is provided with a wave-proof device; the wave-proof device comprises a central pipe and a support plate; the axis of the central pipe is superposed with the axis of the inner container; and the support plate is trumpet-shaped, an opening at the small end of the support plate is welded with the outer circumference surface of the central pipe, and an opening at the large end of the support plate is welded with the inner wall of the inner container. Because the wave-proof plate with a special structure is arranged in the inner container, impact and oscillation of liquid in the tank body in each direction when the ship runs are reduced, and the safety is ensured. Meanwhile, the LNG storage tank provides proper liquid storage volume and good heat insulation performance, and is fully suitable to be used in the ship.
Description
Technical field
The present invention relates to low-temperature (low temperature) vessel, be specifically related to be used for the LNG storage tank of diesel-LNG hybrid power ship.
Background technique
The main component of LNG (Liquefied Natural Gas, LNG Liquefied natural gas) is made up of methane, natural gas in gaseous state under the normal pressure is cooled to-162 ℃ condenses into liquid and obtain, and has characteristics such as the storage and transportation space of saving and cost, calorific value are big, performance height.
LNG is a kind of cleaning, the energy efficiently, and many countries all classify LNG as preferred fuels, and the ratio of rock gas in energy supply increases sharply, and LNG also begins progressively to use at automotive field as mixed power.
Boats and ships are as a kind of most economical means of transportation, and the general at present fuel that uses is diesel oil, and high but the diesel marine fuel consumes, operation cost is high, and seriously polluted, and therefore, diesel-LNG hybrid power has broad application prospects on boats and ships.Because LNG need remain under the temperature about-162 ℃ and preserves, therefore, the low-temperature storage of LNG is to be implemented in to use first committed step that diesel-LNG hybrid power should technology on the boats and ships.
Existing LNG low-temperature storage tank generally has two kinds, and a kind of being applied on the hybrid vehicle, but this flask volume less (having only about 60L-450L) can't be satisfied the demand of boats and ships.Another kind is common LNG cryogenic liquide tank container, is mainly used in the LNG transportation, and as the fuel reservoir of boats and ships, volume is excessive, and the space on the waste ship is uneconomical, and general working pressure is lower, directly internal-combustion engine air feed on ship.
Summary of the invention
Technical problem to be solved by this invention provides a kind of LNG storage tank that is used for diesel-LNG hybrid power ship, and suitable liquid storage volume and good thermal insulation property are provided, so that diesel-LNG hybrid power can be used on boats and ships smoothly.
In order to realize the foregoing invention purpose; The technological scheme that the present invention adopts provides a kind of LNG storage tank that is used for diesel-LNG hybrid power ship; Comprise envelope sealed and the sealing inner container that is provided with in the enclosure, shell is provided with a LNG who communicates with the inner container bottom and fills pipe, and inner container through some Glass Steel Tube shore supports in the enclosure and twine thermal-protective coating on the inner container; Interlayer between shell and the inner container is a vacuum; The middle part of inner container is provided with shielding, and said shielding comprises center tube and dunnage, the axis of said center tube and the dead in line of inner container; Said dunnage is horn-like, the external peripheral surface welding of its small end opening and center tube, the inwall welding of big end opening place and inner container.
In such scheme; The upper and lower part of the big end of said dunnage is provided with the upper and lower breach that is formed by the horizontal plane cut respectively; Said upper and lower notch geometry size is identical, and upper and lower indentation, there is welded with upper and lower angle block of right angle respectively, and the horizontal component of said upper and lower angle block of right angle is suitable with said upper and lower breach respectively; The edge of vertical component is suitable with the inwall of inner container respectively, the edge of upper and lower angle block of right angle vertical component respectively with the welding of the inwall of inner container.
In such scheme; Be provided with four reinforcement tubes in the inner container; Said four reinforcement tubes are vertical respectively to be provided with and along the axial vertical centering control vertical plane symmetric arrangement of inner container, weld through stiffening plate and inner container the end of reinforcement tube, and position corresponding with reinforcement tube on the shell has through hole; Said through hole is through the plug sealing, and said Glass Steel Tube pillar is separately positioned between plug and the stiffening plate.
In such scheme, said thermal-protective coating is entwined by laminated aluminium foil paper and glass fiber paper at interval, and twining the number of plies is 50 layers, and the thickness after the binding is 25-30mm, and glass fiber paper is close to the outer wall of inner container.
In such scheme, the upper left quarter of inner container is provided with the technology manhole, and the sealing of through hole sealing cover, and sealing cover is provided with low temperature adsorbent.
In such scheme, said low temperature adsorbent is the mixture of 5A, 13X molecular sieve or 5A and 13X, and the mass ratio of the two is 2: 1 in 5A and the 13X mixture.
In such scheme, the and arranged on left and right sides of outer casing inner wall is respectively arranged with inhales the hydrogen agent, and the agent of said suction hydrogen is Metal Palladium or zirconium.
In such scheme, shell is provided with pressurized machine, and the outlet of this pressurized machine is communicated with the inner chamber of inner container.
In such scheme; The top of shell also is provided with the 2nd LNG and fills pipe; The 2nd LNG fills that pipe feeds in the inner chamber of inner container and extends to its left end along the roof of inner container, and the 2nd LNG that is positioned at the inner container top fills on the external peripheral surface of tubular portion and is provided with a plurality of through holes equably.
The present invention; According to the customized LNG storage tank of inland navigation craft concrete condition; Actual volume reaches 5m3～10m3, and fuel is carried can satisfy the navigation requirement of boats and ships fully, and in inner container, is provided with the swash plate of special construction; Therefore reduced in the ship running process that liquid has guaranteed Security to the impact and the vibration of all directions in the tank body.
Description of drawings
Fig. 1 is used for a kind of embodiment's of LNG storage tank of diesel-LNG hybrid power ship structural representation for the present invention; Fig. 2 is the A portion enlarged view among Fig. 1; Fig. 3 is the B portion enlarged view among Fig. 1; Fig. 4 is the shielding cross-sectional view; Fig. 5 is the shielding side view; Fig. 6 is the shielding plan view; Fig. 7 is upper and lower angle block of right angle perspective view; Fig. 8 is the plan view that is used for the LNG storage tank of diesel-LNG hybrid power ship; Fig. 9 is the right elevation that is used for the LNG storage tank of diesel-LNG hybrid power ship.
Embodiment
Below in conjunction with accompanying drawing detailed explanation is made in invention.
The invention provides a kind of LNG storage tank that is used for diesel-LNG hybrid power ship, being used in pressure range is that long term storage low temperature LNG is that engine of boat and ship provides fuel under the state of 0-0.8Mpa.Fig. 1 is the structural representation that is used for a kind of embodiment of LNG storage tank of diesel-LNG hybrid power ship, and Fig. 2 is the A portion enlarged view among Fig. 1, like Fig. 1, shown in Figure 2; The LNG storage tank that is used for diesel-LNG hybrid power ship comprises envelope sealed 1 and the sealing inner container 2 that is arranged in the shell 1, and the profile of shell 1 and inner container 2 is the horizontal cylindrical tank body that steel plate is welded, and two ends are spherical shape; The material of inner container 2 is a 06Cr19Ni10 low-carbon (LC) Ovshinsky stainless steel, and the material of shell 1 is the Q345R structural carbon steel, is welded with some circle angle steel 3 on the cylindrical columnar inner surface of shell 1; Be used to strengthen the rigidity and the intensity of shell 1; Twine thermal-protective coating 4 on the inner container 2, thermal-protective coating 4 is entwined by laminated aluminium foil paper and glass fiber paper at interval, and twining the number of plies is 50 layers; Thickness after the binding is 25-30mm; Wherein glass fiber paper is close to the outer wall of inner container 2, and the selection process test of the winding number of plies and thickness can guarantee that materials are economized most under the prerequisite of the effect of heat insulation of the best.Be equipped with on the shell 1 and vacuumize interface device; Utilize the vacuum unit that the interlayer between shell 1 and the inner container 2 is vacuumized; Make every effort to As time goes on reducing to alap degree with this through the heat conduction amount that convection current, conduction and radiation approach pass to inner container 2; Keep low temperature system proper functioning, guarantee low temperature LNG long term storage.Various pipelines and valve are installed on the shell 1; Through the switch transporting low temperature LNG liquid of valve, supply motor to use, main mouth of pipe valve and instrument (pressure gauge, level meter etc.) are arranged in the front of storage tank one side seal head; And when being installed on the boats and ships; Towards the starboard of hull, the marshalling of pipeline and valve makes operation and easy to maintenance.Storage tank is furnished with saddle 6, mounting hole (end is a circular hole, and an end is a slotted hole) is arranged, so that it accurately is installed on the deck in ship structure on the saddle 6.
The middle part of inner container 2 is provided with shielding 5, and the structure of shielding such as Fig. 4, Fig. 5 and shown in Figure 6 comprise center tube 51 and dunnage 52; Center tube 51 is round shell-like; The dead in line of its axis and inner container 2, dunnage 52 is horn-like, the external peripheral surface welding of its small end opening and center tube 51; Big end opening is towards the left end of inner container; Owing to be horn-like dunnage 52 and can play buffer function, reduced therefore in the ship running process that liquid has guaranteed Security to the impact and the vibration of all directions in the tank body.In order further to improve anti-ripple effect; Dunnage 52 has adopted a kind of more advanced structure among the present invention; The upper and lower part of dunnage 52 big ends is provided with the upper and lower breach that is formed by the horizontal plane cut respectively, and said upper and lower notch geometry size is identical, and upper and lower indentation, there is welded with upper and lower angle block of right angle 53 respectively; The structure of upper and lower angle block of right angle 53 is as shown in Figure 7; The horizontal component 531 of said upper and lower angle block of right angle is suitable with said upper and lower breach respectively, and the edge of vertical component 532 is suitable with the inwall of inner container respectively, the edge of upper and lower angle block of right angle vertical component 532 respectively with the welding of the inwall of inner container.The setting of upper and lower angle block of right angle 53, reduced liquid in dunnage 52 inner spaces the rocking of upper and lower part, through test, anti-ripple effect has improved 20%.
In order to improve the support strength of 1 pair of inner container 2 of shell, and guarantee that inner container 2 is indeformable, the inside of inner container 2 is provided with four reinforcement tubes 21; In conjunction with Fig. 1, Fig. 3, Fig. 6 and Fig. 8, four reinforcement tubes 21 are vertical respectively to be provided with and along the axial vertical centering control vertical plane symmetric arrangement of inner container 2, the end of reinforcement tube 21 is welded as a whole through the outer wall of stiffening plate 22 with inner container 2; Have through hole with reinforcement tube 21 corresponding positions on the shell 1, through hole is through plug 11 sealings, and Glass Steel Tube pillar 7 is separately positioned between plug 11 and the stiffening plate 22; Play a supporting role; Utilize Glass Steel Tube pillar 7 as supporting, strengthened heat insulation effect, simultaneously; Because Glass Steel Tube pillar 7 is carried by four reinforcement tubes 21, has guaranteed that inner container 2 is difficult for deforming.
The upper left quarter of inner container 2 is provided with technology manhole 23, is used for the inside of labor cleaning's inner container, and buckle closure has sealing cover 24 on the technology manhole 23; Realize sealing; In order further to improve effect of heat insulation, sealing cover 24 is provided with low temperature adsorbent 25, and low temperature adsorbent is 5A or 13X molecular sieve; Optimal scheme is that 5A or 13X mix use, and the mass ratio of the two is 2: 1 in 5A and the 13X mixture.In addition; The and arranged on left and right sides of shell 1 inwall is respectively arranged with inhales hydrogen agent 12, is used for adsorbing the free hydrogen ion of interlayer, and what inhale hydrogen agent employing is Metal Palladium or zirconium; Metal Palladium or zirconium have extremely strong suction hydrogen effect; Low temperature adsorbent and the use of inhaling the hydrogen agent can improve shell 1 and the interior degree of vacuum of inner container 2 interlayers greatly, thereby improve heat insulation effect.
In the invention, shell 1 is provided with pressurized machine 13, and is as shown in Figure 9, and the outlet of this pressurized machine 13 is communicated with the inner chamber of inner container 2, during a large amount of emissions operations, can come boost pressure with pressurized machine, supplies motor to use to keep higher air demand.
Among the present invention, LNG storage tank actual volume reaches 5m
3～10m
3, working pressure generally is decided to be two kinds of 0.8MPa and 1.2MPa, can satisfy the requirement of inland navigation craft LNG fuel storage, for inland water transport develops the condition that provides to economy and low-carbon environment-friendly direction.Say that at length the present invention has following beneficial effect.
(1), tank inside is equiped with swash plate, reduced in the ship running process that liquid has guaranteed Security to the impact and the vibration of all directions in the tank body.
(2), storage tank body and pipeline portions, all pressure release gases adopt concentrates the drain discharging, has improved the safety reliability of system.According to the residing state of boats and ships, can change the height that the emptying mouth of pipe sets up.Blow-down pipe adopts light-weight design, connects to adopt rapid pipe joint, and it is efficient and convenient to change use.
(3), storage tank fills and mouthful all is positioned at boats and ships starboard direction, is convenient to LNG power system peculiar to vessel and promotes, and forms the unified standard that fills.
(4), storage tank each item boundary dimension parameter designs with equipment requirements according to riverboat, storage tank does not influence movable and any shipboard operation of crewman and boats and ships and normally navigates by water after installing on the boat deck.
(5), the top of inner container and bottom be equipped with LNG and fill pipe, the LNG at top fills the effect that pipe can play cooling, therefore, can realize that LNG fills fast.
The present invention is not limited to above-mentioned preferred forms, and anyone should learn the structural change of under The Process of Invention, making, and every have identical or close technological scheme with invention, all falls within the protection domain of invention.
Claims (9)
1. the LNG storage tank that is used for diesel-LNG hybrid power ship; Comprise envelope sealed and the sealing inner container that is provided with in the enclosure; Shell is provided with a LNG who communicates with inner container bottom and fills pipe, inner container through some Glass Steel Tube shore supports in the enclosure and twine thermal-protective coating on the inner container, the interlayer between shell and the inner container is a vacuum; It is characterized in that the axial neutral position of inner container is provided with shielding, said shielding comprises:
Center tube, the dead in line of its axis and inner container;
Dunnage is horn-like, the external peripheral surface welding of its small end opening and center tube, the inwall welding of big end opening place and inner container.
2. the LNG storage tank that is used for diesel-LNG hybrid power ship as claimed in claim 1; The upper and lower part that it is characterized in that the big end of said dunnage is provided with the upper and lower breach that is formed by the horizontal plane cut respectively; Said upper and lower notch geometry size is identical; Upper and lower indentation, there is welded with upper and lower angle block of right angle respectively; The horizontal component of said upper and lower angle block of right angle is suitable with said upper and lower breach respectively, and the edge of vertical component is suitable with the inwall of inner container respectively, the edge of upper and lower angle block of right angle vertical component respectively with the welding of the inwall of inner container.
3. the LNG storage tank that is used for diesel-LNG hybrid power ship as claimed in claim 1; It is characterized in that being provided with in the inner container four reinforcement tubes; Said four reinforcement tubes are vertical respectively to be provided with and along the axial vertical centering control vertical plane symmetric arrangement of inner container, weld through stiffening plate and inner container the end of reinforcement tube, and position corresponding with reinforcement tube on the shell has through hole; Said through hole is through the plug sealing, and said Glass Steel Tube pillar is arranged between plug and the stiffening plate.
4. the LNG storage tank that is used for diesel-LNG hybrid power ship as claimed in claim 1; It is characterized in that said thermal-protective coating is entwined by laminated aluminium foil paper and glass fiber paper at interval; Twining the number of plies is 50 layers, and the thickness after the binding is 25-30mm, and glass fiber paper is close to the outer wall of inner container.
5. the LNG storage tank that is used for diesel-LNG hybrid power ship as claimed in claim 1 is characterized in that the upper left quarter of inner container is provided with the technology manhole, and buckle closure has sealing cover on the said technology manhole, and sealing cover is provided with low temperature adsorbent.
6. the LNG storage tank that is used for diesel-LNG hybrid power ship as claimed in claim 5 is characterized in that said low temperature adsorbent is the mixture of 5A, 13X molecular sieve or 5A and 13X, and the mass ratio of the two is 2: 1 in 5A and the 13X mixture.
7. the LNG storage tank that is used for diesel-LNG hybrid power ship as claimed in claim 1 is characterized in that the and arranged on left and right sides of outer casing inner wall is respectively arranged with the agent of suction hydrogen, and the agent of said suction hydrogen is Metal Palladium or zirconium.
8. the LNG storage tank that is used for diesel-LNG hybrid power ship as claimed in claim 1 is characterized in that shell is provided with pressurized machine, and the outlet of this pressurized machine is communicated with the inner chamber of inner container.
9. the LNG storage tank that is used for diesel-LNG hybrid power ship as claimed in claim 1; The top that it is characterized in that shell also is provided with the 2nd LNG and fills pipe; The 2nd LNG fills that pipe feeds in the inner chamber of inner container and extends to its left end along the roof of inner container, and the 2nd LNG that is positioned at the inner container top fills on the external peripheral surface of tubular portion and is provided with a plurality of through holes equably.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201010252953A CN101915356B (en) | 2010-08-13 | 2010-08-13 | LNG storage tank for diesel-LNG hybrid power ship |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201010252953A CN101915356B (en) | 2010-08-13 | 2010-08-13 | LNG storage tank for diesel-LNG hybrid power ship |
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| CN101915356A CN101915356A (en) | 2010-12-15 |
| CN101915356B true CN101915356B (en) | 2012-10-17 |
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| CN106224760A (en) * | 2016-07-06 | 2016-12-14 | 张家港市科华化工装备制造有限公司 | A kind of cryogenic liquid tank with stable inner pressurd vessel structure |
| CN106224769A (en) * | 2016-07-06 | 2016-12-14 | 张家港市科华化工装备制造有限公司 | A kind of cryogenic liquid tank with inner pressurd vessel multi-point support structure |
| CN113188033A (en) * | 2021-04-09 | 2021-07-30 | 新兴能源装备股份有限公司 | LNG low-temperature transportation tank car |
| CN113619724B (en) * | 2021-09-07 | 2022-10-14 | 张家港江苏科技大学产业技术研究院 | Low-resistance ship |
| CN116605357B (en) * | 2023-07-20 | 2023-10-24 | 中太(苏州)氢能源科技有限公司 | Component for inner wall of liquefied gas storage cabin |
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