CN108861170B - Anti-seismic structure for inner tank of double-shell low-temperature tank - Google Patents
Anti-seismic structure for inner tank of double-shell low-temperature tank Download PDFInfo
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- CN108861170B CN108861170B CN201710344218.2A CN201710344218A CN108861170B CN 108861170 B CN108861170 B CN 108861170B CN 201710344218 A CN201710344218 A CN 201710344218A CN 108861170 B CN108861170 B CN 108861170B
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
- B65D90/00—Component parts, details or accessories for large containers
- B65D90/02—Wall construction
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
- B65D90/00—Component parts, details or accessories for large containers
- B65D90/02—Wall construction
- B65D90/08—Interconnections of wall parts; Sealing means therefor
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
- B65D90/00—Component parts, details or accessories for large containers
- B65D90/22—Safety features
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- Mechanical Engineering (AREA)
- Filling Or Discharging Of Gas Storage Vessels (AREA)
Abstract
The invention provides an anti-seismic structure for an inner tank of a double-shell low-temperature tank, which comprises the following components: the anchor belt box is arranged in the bearing platform foundation, the top end of the anchor belt box is exposed out of the upper surface of the bearing platform foundation, and the anchor belt box penetrates through the outer tank bottom plate and is welded with the outer tank bottom plate in a sealing mode; the cover body is exposed out of the lower surface of the bearing platform foundation and seals the bottom end of the anchor belt box; the lower end of the anchor belt penetrates through the anchor belt box to be connected with the cover body, and the upper end of the anchor belt is movably connected with the inner tank wall. The anchor belt penetrates through the anchor belt box in the concrete bearing platform foundation and then is connected with the exposed cover body, the anchor belt is not in contact with the anchor belt box and is not in contact with the outer tank bottom plate, and the problem that the outer tank and the bearing platform foundation are damaged at low temperature because the cold energy of the low-temperature inner tank is transmitted to the outer tank and the bearing platform foundation is solved; the damage of tearing force generated by the anchor belt to the external tank bottom plate during earthquake is avoided; the anchor belt upper end swing joint inner tank wall can avoid the anchor belt to produce additional pulling force to the inner tank wall, and fixed low temperature inner tank during the earthquake gives the bearing platform with the seismic force direct transfer of the jar body, avoids low temperature inner tank to produce when the earthquake and lifts away from the destruction.
Description
Technical Field
The invention relates to the field of petroleum and chemical equipment, in particular to an anti-seismic structure for an inner tank of a double-shell low-temperature tank.
Background
In double-shell low-temperature storage tanks such as LNG (liquefied natural gas), propane, propylene, ethylene, liquid ammonia and the like, in earthquake fortification areas, in order to avoid the lifting-off force generated by an inner tank during an earthquake, a damping pad is usually added between a bearing platform foundation and a foundation pile at the bottom of the outer tank in engineering, and the traditional method of arranging an anchor belt similar to the outer tank is not adopted, namely the anchor belt is welded on the wall of the inner tank, and the lower end of the anchor belt is embedded into or penetrates through the bearing platform foundation. Because this structure of traditional outer jar with anchor belt can produce very big destruction to the inner tank, leads to the potential safety hazard. The main hazards are as follows: firstly, when the anchor belt passes outer jar bottom plate, because need inflammable and explosive medium in the airtight outer jar, the anchor belt needs the welding with outer jar bottom plate department of passing. However, the welded structure inevitably transfers the cold energy after the anchor belt is contacted with the inner tank to the outer tank bottom plate and the outer tank foundation, the outer tank is necessary to adopt a low-temperature steel plate with high price, and the anchor belt is buried or penetrates through the foundation, so that the multiple foundations can be damaged by frost heaving due to low temperature. The arrangement of a large number of anchor belts can also cause the loss of a large number of cold quantities of the low-temperature tank body, and cause the economic huge loss of the whole low-temperature tank system. The second hazard is that one end of the anchor belt is welded with the bottom plate of the outer tank, the other end of the anchor belt is welded with the wall of the inner tank, when an earthquake occurs, the inner tank is lifted away, the anchor belt is used for fixing the inner tank, the stressed tension is transmitted to the welding position of the anchor belt and the bottom plate of the outer tank, and great local stress is generated on the wall of the inner tank, so that the two positions are in danger of damage, and the leakage of the internal low-temperature medium is caused, and the secondary hazard is caused. The method for adding the shock absorption pad is really feasible, but the shock absorption pad is expensive, a plurality of shock absorption pads are damaged only after being installed without earthquake, and need to be replaced regularly within 20-25 years of service in the future, and the replacement is very troublesome.
Disclosure of Invention
In view of the problems in the background art, an object of the present invention is to provide an anti-seismic structure for an inner tank of a double-shell cryogenic tank, which can fix the inner tank of the cryogenic tank during an earthquake, prevent a medium in an outer tank from leaking, and prevent the cold energy of the inner tank of the cryogenic tank from adversely affecting the outer tank and a bearing platform foundation.
In order to achieve the above object, the present invention provides an anti-seismic structure for an inner tank of a double-shell cryogenic tank, comprising: the anchor belt box is arranged in the bearing platform foundation, the top end of the anchor belt box is exposed out of the upper surface of the bearing platform foundation, and the anchor belt box penetrates through the outer tank bottom plate and is welded with the outer tank bottom plate in a sealing mode; the cover body is exposed out of the lower surface of the bearing platform foundation and seals the bottom end of the anchor belt box; and the lower end of the anchor belt penetrates through the anchor belt box to be connected with the cover body, and the upper end of the anchor belt is movably connected with the inner tank wall.
Further, the upper end of anchor belt passes through telescopic machanism swing joint inner tank wall, and telescopic machanism includes: the clamp is welded with the inner tank wall, and the anchor belt penetrates through a gap between the clamp and the inner tank wall; and the limiting plate is spaced from the clamp, the thickness of the limiting plate is larger than that of the gap, the limiting plate is welded with the anchor belt penetrating through the clamp, and when the inner tank is lifted away, the limiting plate is fastened with the clamp.
Further, the anti-seismic structure for inner tank of double-shell cryogenic tank still includes: and the cold insulation material is filled in the anchor belt box and used for reducing the cold radiation of the anchor belt.
Furthermore, the cold insulation material is expanded pearl sand which is filled in the anchor belt box.
Further, the anti-seismic structure for inner tank of double-shell cryogenic tank still includes: and the heat dissipation mechanism is arranged on the cover body.
Furthermore, the heat dissipation mechanism is a heat dissipation sheet welded on the cover body.
Further, the anti-seismic structure for inner tank of double-shell cryogenic tank still includes: and the anchor belt box and the outer tank bottom plate are hermetically welded through the upper cover plate.
Further, the anchor belt box includes: a square box body; the round bar is welded on the square box body and is welded with the concrete steel bar in the bearing platform foundation; the square flange is welded with the square box body, and the cover body is welded on the square flange; and the reinforcing ribs are arranged at the welding positions of the square box body and the square flange.
Furthermore, the thickness of the plate of the square box body is 4-6mm, and a pressure vessel low-temperature steel plate 16MnDR or 9% Ni is selected.
Furthermore, the round bar is made of low-temperature resistant steel bar.
The invention has the following beneficial effects:
in the anti-seismic structure for the inner tank of the double-shell low-temperature tank, the anchor belt penetrates through the anchor belt box pre-embedded in the concrete bearing platform foundation and then is connected with the exposed cover body, the anchor belt is not in contact with the anchor belt box and is not in contact with the bottom plate of the outer tank, and the anti-seismic structure has the following beneficial effects: firstly, after the anchor belt is contacted with the low-temperature inner tank, the cold energy of the low-temperature inner tank is prevented from being directly transmitted to the anchor belt box and the outer tank bottom plate through the anchor belt, so that the problem that the cold energy of the low-temperature inner tank is transmitted to the outer tank to cause low-temperature damage of the outer tank is solved; secondly, the damage of tearing force generated by the anchor belt to the tank bottom plate during earthquake is avoided, and the leakage of a medium in the outer tank is avoided; thirdly, the problem that the cold energy of the low-temperature inner tank is conducted to the bearing platform foundation by the anchor belt to cause low-temperature damage of the bearing platform foundation is avoided; fourthly, the upper end of the anchor belt is movably connected with the inner tank wall, so that the anchor belt can be prevented from generating additional tension on the inner tank wall, and when an earthquake occurs, the low-temperature inner tank can be fixed, the earthquake force of the tank body is directly transmitted to the pressure-bearing platform, and the low-temperature inner tank is prevented from being lifted away and damaged when the earthquake occurs.
The invention can be used for the anti-seismic fixation of various low-temperature tank inner tanks, has simple structure, good sealing effect, economy and practicality, and ensures the safety of the low-temperature inner tanks.
Additional features and advantages of the invention will be set forth in the detailed description which follows.
Drawings
The above and other objects, features and advantages of the present invention will become more apparent by describing in more detail exemplary embodiments thereof with reference to the attached drawings, in which like reference numerals generally represent like parts throughout.
Figure 1 shows a schematic view of the seismic structure for a double-shell cryogenic tank inner tank of the present invention.
Figure 2 shows a schematic view of an anchor belt box of a seismic structure for a tank in a double-shelled cryogenic tank.
Figure 3 shows a schematic view of the anchor cassette of figure 2 in the direction a.
Fig. 4 shows a close-up view of node I of the anchor belt box of fig. 2.
Fig. 5 shows a schematic connection of the seismic structure for the inner tank of the double-shell cryogenic tank of the present invention.
Fig. 6 shows a schematic view of fig. 5 in direction B.
Fig. 7 shows a schematic view of the clip and the retainer plate of the present invention.
Detailed Description
Preferred embodiments of the present invention will be described in more detail below with reference to the accompanying drawings. While the preferred embodiments of the present invention are shown in the drawings, it should be understood that the present invention may be embodied in various forms and should not be limited to the embodiments set forth herein.
Referring to fig. 1, the seismic structure for an inner tank of a double-shell cryogenic tank according to the present invention includes: the anchor belt box 5 is arranged in the bearing platform foundation 10, the top end of the anchor belt box is exposed out of the upper surface of the bearing platform foundation 10, and the anchor belt box penetrates through the outer tank bottom plate 9 and is welded with the outer tank bottom plate 9 in a sealing mode; the cover body 6 is fixed and exposed on the lower surface of the bearing platform foundation 10, and seals the bottom end of the anchor belt box 5; and the lower end of the anchor belt 3 penetrates through the anchor belt box 5 to be connected with the cover body 6, and the upper end of the anchor belt is movably connected with the inner tank wall 11.
In the anti-seismic structure for the inner tank of the double-shell low-temperature tank, the anchor belt 3 penetrates through the anchor belt box 5 pre-embedded in the concrete bearing platform foundation 10 and then is connected with the exposed cover body 6 (the connection can be welding), the anchor belt 3 is not in contact with the anchor belt box 5 and is not in contact with the outer tank bottom plate 9, and the structure has the following beneficial effects: firstly, after the anchor belt 3 is contacted with the low-temperature inner tank 12, the cold energy of the low-temperature inner tank 12 is prevented from being directly transmitted to the anchor belt box 5 and the outer tank bottom plate 9 through the anchor belt 3, so that the problem that the cold energy of the low-temperature inner tank 12 is transmitted to the outer tank 13 to cause low-temperature damage of the outer tank 13 is avoided; secondly, the anchor belt 3 is prevented from generating tearing force damage to the outer tank bottom plate 9 during earthquake, and the medium L (low-temperature flammable and explosive gas) in the outer tank 13 is prevented from leaking; thirdly, the problem that the cold energy of the low-temperature inner tank 12 is conducted to the bearing platform foundation 10 by the anchor belt 3 to cause the low-temperature damage of the bearing platform foundation 10 is avoided; fourthly, the upper end of the anchor belt 3 is movably connected with the inner tank wall 11, so that the additional tensile force generated by the anchor belt 3 on the inner tank wall 11 can be avoided, and the low-temperature inner tank 12 can be fixed during an earthquake to directly transmit the earthquake force of the tank body to the pressure-bearing platform, so that the low-temperature inner tank 12 is prevented from being lifted off and damaged during the earthquake.
The invention can be used for the anti-seismic fixation of various low-temperature inner tanks, has simple structure, good sealing effect, economy and practicality, and ensures the safety of the low-temperature inner tanks.
In an embodiment of the seismic structure for the inner tank of the double-shell cryogenic tank according to the present invention, referring to fig. 1 and 7, the upper end of the anchor strap 3 may be movably connected to the inner tank wall 11 by a telescopic mechanism, which may include: the clamp 2 is welded with the inner tank wall 11, and the anchor belt 3 penetrates through a gap between the clamp 2 and the inner tank wall 11; and the spacing has between limiting plate 1 and checkpost 2, and thickness is greater than the space, with pass the 3 welding of anchor belt of checkpost 2, when low temperature inner tank 12 lifts off, limiting plate 1 and the straining of checkpost 2. As shown in fig. 7, the upper end of the anchor belt 3 passes through the gap between the clip 2 and the inner tank wall 11, and then is welded with the limiting plate 1, and is hung on the clip 2 on the inner tank wall 11. Because the diameter can diminish and produce horizontal displacement after the low temperature inner tank 12 is filled with the low temperature medium, the spacing plate 1 needs to be spaced from the clip 2 by a certain distance. Telescopic machanism makes the upper end of anchor belt 3 freely stretch out and draw back, and when having solved manufacturing installation error, hydrostatic test, normal operating mode, anchor belt 3 produced additional tensile problem to inner tank wall 11, and when the earthquake, because low temperature inner tank 12 is lifted away, limiting plate 1 and 2 straining of checkpost to reach the effect of fixed low temperature inner tank 12, prevent that low temperature inner tank 12 from being destroyed when the earthquake moreover.
In an embodiment of the anti-seismic structure for a double-shell cryogenic tank inner tank according to the present invention, referring to fig. 1, the anti-seismic structure for a double-shell cryogenic tank inner tank may further include: and the cold insulation material 4 is filled in the anchor belt box 5 and used for reducing the cold radiation of the anchor belt 3. The provision of the cold insulating material 4 further prevents the cold of the mooring belt 3 from being transferred to the mooring belt box 5 by radiation and thus to the outer tank floor 9 and the cap foundation 10. In one embodiment, the cold insulation material 4 may be expanded pearl sand filled in the anchor belt box 5 in a loose state. In order to ensure the cold insulation effect and the low-temperature inner tank 12 can be fixed by the anchor belt 3 during the earthquake, the expanded pearl sand needs to be not filled as required and is ensured to be in a loose state.
In an embodiment of the anti-seismic structure for a double-shell cryogenic tank inner tank according to the present invention, referring to fig. 1, 5 and 6, the anti-seismic structure for a double-shell cryogenic tank inner tank may further include: and a heat dissipation mechanism 7 provided on the lid 6. The heat dissipation mechanism 7 can dissipate the cold energy of the anchor belt 3, and prevent the anchor belt 3 from transmitting the cold energy to the cover body 6 and freezing the concrete bearing platform foundation 10 to damage the cold energy. In one embodiment, the heat dissipation mechanism 7 may be a heat sink, welded to the cover 6. The temperature of the bottom of the anchor belt 3 rises greatly due to cold loss, the bottom of the anchor belt is exposed out of the bearing platform foundation 10, air under the bearing platform foundation 10 is convected through the radiating fins, and the bottom of the anchor belt 3 is guaranteed to be higher than 0 ℃ and not frozen.
In an embodiment of the anti-seismic structure for a double-shell cryogenic tank inner tank according to the present invention, referring to fig. 1, the anti-seismic structure for a double-shell cryogenic tank inner tank may further include: and the upper cover plate 8, the anchor belt box 5 and the outer tank bottom plate 9 are hermetically welded through the upper cover plate 8. The upper cover plate 8 is welded with the side wall of the anchor belt box 5 and the outer tank bottom plate 9 to achieve the sealing effect.
In an embodiment of the seismic structure for a double-shell cryogenic tank inner tank according to the present invention, referring to fig. 1 to 6, the anchor belt box 5 may include: a square box 50; the round bar 52 is welded on the square box body 50, is welded with a concrete reinforcement in the bearing platform foundation and is used for fixing the square box body 50; a square flange 51 welded to the square case 50, and a lid 6 welded to the square flange 51; and a reinforcing rib 53 provided at a welding portion between the square case 50 and the square flange 51.
The round bar 52 is welded on the square box 50 in advance according to the reinforcement distribution position of the embedded steel bars in the concrete bearing platform foundation 10. The round bar 52 serves to fix the square box 50 so that the square box 50 is not displaced by the force transmitted from the anchor belt 3 during an earthquake.
In order to ensure that the square box body 50 cannot leak in the using process, 100% of nondestructive testing and pressure testing are carried out on welding seams of the square box body 50, a temporary cover plate 54 is manufactured, 1.2 times of design pressure of an equipment tank body is taken in the pressure testing to carry out air pressure testing, air tightness testing is carried out, the pressure testing is embedded into the concrete bearing platform foundation 10 after all the pressure testing is qualified, and the temporary cover plate 54 is cut off after the construction of the leveling cement layer of the low-temperature inner tank 12 is finished, so that the square box body 50 is slightly higher than the leveling cement layer.
In one embodiment, 4 reinforcing ribs 53 made of low-temperature material are uniformly arranged at the welding position of the square box 50 and the square flange 51 for reinforcement. The reinforcing ribs 53 can prevent the problem that the welding seam at the welding position of the square box 50 and the square flange 51 is broken due to forced dislocation of the round bars 52 when the concrete reinforcing bars and the round bars 52 on the square box 50 are butt-welded because of position adjustment and installation error and misalignment.
In an embodiment of the square box 50, the square box 50 can be made by bending two thin plates and then welding the two thin plates together.
In one embodiment, when the square box 50 is inserted into the square flange 51 and welded thereto, the protruding portion of the butt joint of the square box 50 collides with the square flange 51, and the lower portion of the square box 50 is fillet-welded by argon arc welding. Referring to fig. 3, a square hole H having the same shape as the cross-sectional shape of the square case 50 is formed at the center of the square flange 51, and the square case 50 is inserted into the square hole H and welded. Referring to fig. 4, a square case 50 is fillet-welded to a square flange 51.
In an embodiment of the square box 50, the thickness of the plate of the square box 50 may be 4-6mm, preferably 5 mm.
In one embodiment of the square box 50, the plate of the square box 50 may be made of 16MnDR or 9% Ni low temperature steel plate for pressure vessel.
In one embodiment of the round bar 52, the round bar 52 may be a low temperature resistant steel bar.
Having described embodiments of the present invention, the foregoing description is intended to be exemplary, not exhaustive, and not limited to the embodiments disclosed. Many modifications and variations will be apparent to those of ordinary skill in the art without departing from the scope and spirit of the described embodiments.
Claims (9)
1. The utility model provides a two shell low temperature tank inner tank are with antidetonation structure which characterized in that includes:
the anchor belt box is arranged in the bearing platform foundation, the top end of the anchor belt box is exposed out of the upper surface of the bearing platform foundation, and the anchor belt box penetrates through the outer tank bottom plate and is welded with the outer tank bottom plate in a sealing mode;
the cover body is exposed out of the lower surface of the bearing platform foundation and seals the bottom end of the anchor belt box; and
the lower end of the anchor belt penetrates through the anchor belt box to be connected with the cover body, the upper end of the anchor belt is movably connected with the inner tank wall, and the anchor belt is not in contact with the anchor belt box;
the upper end of anchor belt passes through telescopic machanism swing joint inner tank wall, and telescopic machanism includes:
the clamp is welded with the inner tank wall, and the anchor belt penetrates through a gap between the clamp and the inner tank wall; and
the spacing has between limiting plate and the checkpost, and thickness is greater than the space, with pass the anchor area welding of checkpost, when the inner tank lift off, limiting plate and checkpost straining.
2. The seismic structure for the inner tank of the double-shell cryogenic tank of claim 1, further comprising: and the cold insulation material is filled in the anchor belt box and used for reducing the cold radiation of the anchor belt.
3. An earthquake-resistant structure for an inner tank of a double-shell cryogenic tank according to claim 2,
the cold insulation material is expanded pearl sand which is filled in the anchor belt box.
4. The seismic structure for the inner tank of the double-shell cryogenic tank of claim 1, further comprising: and the heat dissipation mechanism is arranged on the cover body.
5. An earthquake-resistant structure for an inner tank of a double-shell cryogenic tank according to claim 4,
the heat dissipation mechanism is a heat dissipation sheet and is welded on the cover body.
6. The seismic structure for the inner tank of the double-shell cryogenic tank of claim 1, further comprising: and the anchor belt box and the outer tank bottom plate are hermetically welded through the upper cover plate.
7. An earthquake resistant structure for a double hull cryogenic tank inner tank as defined in claim 1 wherein the anchor belt box comprises:
a square box body;
the round bar is welded on the square box body and is welded with the concrete steel bar in the bearing platform foundation;
the square flange is welded with the square box body, and the cover body is welded on the square flange; and
and the reinforcing ribs are arranged at the welding positions of the square box body and the square flange.
8. An anti-seismic structure for an inner tank of a double-shell cryogenic tank as defined in claim 7, wherein the plate thickness of the square tank body is 4-6mm, and a low-temperature steel plate 16MnDR or 9% Ni of the pressure vessel is selected.
9. An earthquake-resistant structure for an inner tank of a double-shell cryogenic tank as defined in claim 7, wherein the round bar is a low-temperature resistant steel bar.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201710344218.2A CN108861170B (en) | 2017-05-16 | 2017-05-16 | Anti-seismic structure for inner tank of double-shell low-temperature tank |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201710344218.2A CN108861170B (en) | 2017-05-16 | 2017-05-16 | Anti-seismic structure for inner tank of double-shell low-temperature tank |
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| CN108861170A CN108861170A (en) | 2018-11-23 |
| CN108861170B true CN108861170B (en) | 2020-03-06 |
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| CN112879561B (en) * | 2021-01-12 | 2023-03-10 | 桂林理工大学 | Support structure suitable for vertical pressure vessel |
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| CN2630625Y (en) * | 2003-06-10 | 2004-08-04 | 河南中原绿能高科有限责任公司 | Liquified natural-gas cylinder |
| CN202422902U (en) * | 2012-02-10 | 2012-09-05 | 中国科学院高能物理研究所 | Connection structure for magnet Dewar of superconducting magnetic separator |
| CN104048157A (en) * | 2013-03-15 | 2014-09-17 | 通用汽车环球科技运作有限责任公司 | Method and apparatus for manufacturing fuel storage tank used for fuel storage system and provided with liner and internal bag |
| CN204534121U (en) * | 2015-04-20 | 2015-08-05 | 张杨 | A kind of low-temperature double-case spherical storage tank |
| CN204592846U (en) * | 2015-05-12 | 2015-08-26 | 李鑫 | A kind of spherical bilayer storage tank |
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2017
- 2017-05-16 CN CN201710344218.2A patent/CN108861170B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2630625Y (en) * | 2003-06-10 | 2004-08-04 | 河南中原绿能高科有限责任公司 | Liquified natural-gas cylinder |
| CN202422902U (en) * | 2012-02-10 | 2012-09-05 | 中国科学院高能物理研究所 | Connection structure for magnet Dewar of superconducting magnetic separator |
| CN104048157A (en) * | 2013-03-15 | 2014-09-17 | 通用汽车环球科技运作有限责任公司 | Method and apparatus for manufacturing fuel storage tank used for fuel storage system and provided with liner and internal bag |
| CN204534121U (en) * | 2015-04-20 | 2015-08-05 | 张杨 | A kind of low-temperature double-case spherical storage tank |
| CN204592846U (en) * | 2015-05-12 | 2015-08-26 | 李鑫 | A kind of spherical bilayer storage tank |
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