CN203823425U - Internal pump type LNG (liquefied natural gas)storage tank - Google Patents

Internal pump type LNG (liquefied natural gas)storage tank Download PDF

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Publication number
CN203823425U
CN203823425U CN201420234108.2U CN201420234108U CN203823425U CN 203823425 U CN203823425 U CN 203823425U CN 201420234108 U CN201420234108 U CN 201420234108U CN 203823425 U CN203823425 U CN 203823425U
Authority
CN
China
Prior art keywords
container
storage tank
manhole pipe
lng storage
lng
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Fee Related
Application number
CN201420234108.2U
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Chinese (zh)
Inventor
杨文波
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
SICHUAN JINKE CRYOGENIC ENGINEERING CO LTD
Original Assignee
SICHUAN JINKE CRYOGENIC ENGINEERING CO LTD
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Filing date
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Application filed by SICHUAN JINKE CRYOGENIC ENGINEERING CO LTD filed Critical SICHUAN JINKE CRYOGENIC ENGINEERING CO LTD
Priority to CN201420234108.2U priority Critical patent/CN203823425U/en
Application granted granted Critical
Publication of CN203823425U publication Critical patent/CN203823425U/en
Expired - Fee Related legal-status Critical Current
Anticipated expiration legal-status Critical

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Abstract

The utility model discloses an internal pump type LNG (liquefied natural gas) storage tankwith the advantages that the structure is simple and the system cost is reduced. The LNG storage tank comprises an inner container and an outer container, wherein the inner container is arranged in the outer container, and a thermal insulating layer is arranged between the inner container and the outer container; a manhole pipe adopting a hollow structure is arranged on the outer container, the inner end of the manhole pipe extends into the inner container, the outer surface of the inner end is in seal connection with the inner container, the outer end of the manhole pipe is located on the outer surface of the outer container, an end cover is arranged at the outer end, the inner surface of the end cover seals the outer end of the manhole pipe, a junction box is arranged on the outer surface of the end cover, an immersed pump is arranged at the bottom of the inner container and provided with an output port, an output valve communicated with the inner container is arranged on the outer container, an output pipe is connected to the output valve, and an electric wire and a data cable of the immersed pump are connected to the junction box. With adoption of the LNG storage tank, the whole system is simplified, the cost is reduced, and the structure of a whole LNG gas filling system is simple.

Description

Internal pump formula LNG storage tank
Technical field
The utility model relates to a kind of LNG storage tank, especially a kind of internal pump formula LNG storage tank.
Background technique
Known: LNG LNG Liquefied natural gas, as a kind of colourless, tasteless, nontoxic and non-corrosive clean and effective energy, has become the new focus in energy trading market.LNG leaves in LNG storage tank, in conventional LNG gas station, by immersed pump, extracts LNG.The LNG cryogenic pump sump of an immersed pump special use is set outward at LNG storage tank, immersed pump is arranged on cryogenic pump sump inside, then LNG liquid is caused in cryogenic pump sump from LNG storage tank, and then by immersed pump, LNG is delivered to filling machine liquid feeding, make like this whole system increase equipment and valve.Adopt this kind of system to complete the LNG in LNG storage tank is carried out to aerating, a low temperature cell need to be set specially and corresponding valve is set on LNG storage tank.Therefore equipment is complicated, and valve is complicated, and whole system cost is high.
Model utility content
Technical problem to be solved in the utility model is to provide a kind of simple in structure, reduces the internal pump formula LNG storage tank of LNG refueling system cost.
The utility model solves the technological scheme that its technical problem adopts: internal pump formula LNG storage tank, comprises inner container, outer container, described inner container is arranged in outer container, between described inner container and outer container, is provided with thermal-protective coating, on described outer container, be provided with the manhole pipe of hollow structure, the inner of described manhole pipe extends in inner container, and described manhole pipe's inner outer surface and inner container are tightly connected, described manhole pipe's outer end is positioned at outer container outer surface, described manhole pipe's outer end is provided with capping, the internal surface sealing manhole pipe's of described capping outer end, described capping outer surface is provided with terminal box, described inner container bottom is provided with immersed pump, described immersed pump has delivery outlet, on described outer container, be provided with the output valve being communicated with inner container, described delivery outlet pipe is received output valve, live wire and datawire that described immersed pump has are connected to terminal box.
Further, between the outer surface of described manhole pipe the inner and inner container, weld; The outer surface suit corrugated expansion joint of described manhole pipe outer end, the wavy surface of described corrugated expansion joint is connected with outer container.
Further, on described manhole pipe's inwall, be provided with the ring plate with center hole, in described ring plate, cover plate be set, the center hole that described cover plate for sealing ring plate has, fill insulant material between described cover plate and capping.
Further, between described cover plate and ring flat-plate, be provided with gasket seal, on described ring flat-plate, be provided with screw thread counter sink, the tapped through hole corresponding with screw thread counter sink on ring flat-plate is set on described cover plate, between described cover plate and ring flat-plate, be connected by screw.
Further, described inner container bottom is provided with support, and described immersed pump is rack-mount.
Further, described inner container bottom is provided with groove, and the entry end of described immersed pump is positioned at groove.
Preferably, described thermal-protective coating filling pearlife.
The beneficial effects of the utility model are: the utility model provides a kind of internal pump formula LNG storage tank, this LNG storage tank is directly arranged on immersed pump in inner container, thereby can in LNG storage tank, directly by immersed pump, extract LNG out, therefore simplified whole system, reduced cost, reduce the setting of valve on LNG storage tank, made whole LNG refueling system simple in structure.
Accompanying drawing explanation
Fig. 1 is the structural representation of internal pump formula LNG storage tank in the utility model embodiment;
Fig. 2 is the partial enlarged drawing of A in Fig. 1;
In figure, indicate: 1-inner container, 11-groove, 2-outer container, 21-output valve, 3-thermal-protective coating, 4-manhole pipe, 41-capping, 42-corrugated expansion joint, 43-terminal box, 44-ring plate, 45-cover plate, 46-thermal insulating material, 5-immersed pump, 51-delivery outlet, 6-support.
Embodiment
Below in conjunction with drawings and Examples, the utility model is further illustrated.
As shown in Figure 1, internal pump formula LNG storage tank, comprises inner container 1, outer container 2, described inner container 1 is arranged in outer container 2, between described inner container 1 and outer container 2, is provided with thermal-protective coating 3, on described outer container 2, be provided with the manhole pipe 4 of hollow structure, the inner of described manhole pipe 4 extends in inner container 1, and described manhole pipe's 4 inner outer surface and inner container 1 are tightly connected, described manhole pipe's 4 outer end is positioned at outer container 2 outer surfaces, described manhole pipe's 4 outer end is provided with capping 41, the internal surface sealing manhole pipe's 4 of described capping 41 outer end, described capping 41 outer surfaces are provided with terminal box 43, described inner container 1 bottom is provided with immersed pump 5, described immersed pump 5 has delivery outlet 51, on described outer container 2, be provided with the output valve 21 being communicated with inner container 1, described delivery outlet 51 pipes are received output valve 21, live wire and datawire that described immersed pump 5 has are connected to terminal box 43.
The internal surface of described capping 41 refers to the junction surface of capping 41 and manhole pipe 4 one end, and the outer surface of capping 41 refers to the back side of capping 41 lower surfaces.The inner of described manhole pipe 4 refers to that manhole pipe 4 is positioned at one end of inner container 1, and described manhole pipe's 4 outer end refers to that manhole pipe 4 is positioned at the one end outside outer container 2.
Described inner container 1 bottom refers to when inner container 1 places, and is positioned at the internal surface of the inner container 1 of below in inner container 1.
By manhole pipe 4 is set, people can be entered in LNG storage tank immersed pump 5 is installed by manhole pipe 4, can safeguard the internal structure of storage tank simultaneously.
Because the inner of described manhole pipe 4 extends in inner container 1, and described manhole pipe's 4 inner outer surface and inner container 1 are tightly connected, described manhole pipe's 4 outer end is positioned at outer container 2 outer surfaces, described manhole pipe's 4 outer end is provided with capping 41, the internal surface sealing manhole pipe's 4 of described capping 41 outer end.Therefore can avoid LNG in LNG storage tank because pressure-acting is from manhole pipe's 4 ejections.Described manhole pipe's 4 inner outer surface and inner container 1 are tightly connected and refer to outer surface and the inner container 1 joint sealing of manhole pipe 4 the inners.
In working procedure, immersed pump 5 is arranged on the bottom of inner container 1, described immersed pump 5 has delivery outlet 51, on described outer container 2, be provided with the output valve 21 being communicated with inner container 1, described delivery outlet 51 pipes are received output valve 21, after immersed pump 5 energisings, LNG can be extracted, open output valve 21, LNG will be exported by output valve 21.
Internal pump formula LNG storage tank described in the utility model directly arranges immersed pump 5 because the inner container 1 at LNG storage tank is interior, thereby has avoided, in traditional LNG gas station, for immersed pump 5 is installed, special cryogenic pump sump must being set.Therefore simplify the refueling system of LiaoLNG gas station, saved LNG storage tank simultaneously and be incorporated into the pneumatic tube of cryogenic pump sump and simplified the valve setting on LNG storage tank.Therefore described internal pump formula LNG storage tank has been simplified the refueling system of LNG, has reduced the construction cost of LNG refueling system, has simplified the valve setting of LNG storage tank.
Manhole pipe 4 on being installed to LNG storage tank after due to storage tank in the LNG of cryogenic high pressure inner container 1 is shunk, yet outer container 2 owing to directly not contacting with LNG, temperature is identical with normal temperature can not shunk.Thereby cause inner container 1 contraction bands to move manhole pipe's 4 transverse shiftings.Thereby cause outer container 2 and manhole pipe's 4 joint drawing cracks.For fear of above-mentioned condition, as shown in Figure 2, welding between the outer surface of described manhole pipe 4 the inners and inner container 1; The outer surface suit corrugated expansion joint 42 of described manhole pipe 4 outer ends, the wavy surface of described corrugated expansion joint 42 is connected with outer container 2.
Manhole pipe 4 is connected with outer container 2 by corrugated expansion joint 42, because corrugated expansion joint 42 has certain contractibility, in the footpath of corrugated expansion joint 42, upwards has certain toughness, therefore can avoid manhole pipe 42 and the joint of LNG storage tank to cause drawing crack; Make manhole pipe 4 connection more stable.
In order to make to access thorough sealing installing the rear manhole pipe 4 of immersed pump 5, prevent the LNG ejection in storage tank.As shown in Figure 2, on described manhole pipe's 4 inwall, be provided with the ring plate 44 with center hole, in described ring plate 44, cover plate 45 be set, the center hole that described cover plate 45 seal ring pieces 44 have, fill insulant material 46 between described cover plate 45 and capping 41.By ring plate 44 being set on the inwall manhole pipe 4 and the center hole that cover plate 45 makes cover plate 45 seal ring pieces 44 being set in ring plate 44.While fill insulant material 46 between cover plate 45 and capping 41.Thereby one end that manhole pipe 4 is in communication with the outside is thoroughly sealed, avoided the LNG in storage tank to overflow in manhole pipe 4.
For cover plate 45 is connected with ring plate 44 closely, while convenient disassembly.Between described cover plate 45 and ring flat-plate 44, be provided with gasket seal, on described ring flat-plate 44, be provided with screw thread counter sink, the tapped through hole corresponding with screw thread counter sink on ring flat-plate 44 is set on described cover plate 45, between described cover plate 45 and ring flat-plate 44, be connected by screw.
Make the sealing between cover plate and environmental protection 44 tightr being provided with gasket seal between cover plate 45 and ring flat-plate 44.Cover plate 45 and ring flat-plate 44 adopt and are threaded simultaneously, make easy installation and removal.
In order to prevent that immersed pump 5 from vibrating in the course of the work, described inner container 1 bottom is provided with support 6, and described immersed pump 5 is arranged on support 6.Immersed pump 5 is arranged on support 6, and support 6 is immersed pump 5 fixedly.Thereby avoided immersed pump 5 to jolt and cause the damage of immersed pump 5 in LNG storage tank transportation process, and vibrated when immersed pump 5 work, live wire and datawire have been broken.
For all LNG in LNG storage tank can be extracted completely, described inner container 1 bottom is provided with groove 11, and the entry end of described immersed pump 5 is positioned at groove 11.Bottom is provided with groove 11, therefore groove 11 is the minimum point of tank contents device 1, immersed pump 5 is in extracting the process of LNG, the liquid level of LNG declines, final remaining LNG liquid will flow in groove 11, because the entry end of immersed pump 5 is positioned at groove 11, so the LNG in LNG storage tank will be found time completely.
In order to reduce the cost of internal pump formula LNG storage tank, described thermal-protective coating 3 filling pearlifes.Pearlife cost is lower, can meet the effect of heat insulation of LNG storage tank simultaneously.

Claims (7)

1. internal pump formula LNG storage tank, comprises inner container (1), outer container (2), described inner container (1) is arranged in outer container (2), between described inner container (1) and outer container (2), is provided with thermal-protective coating (3), it is characterized in that: the manhole pipe (4) who is provided with hollow structure on described outer container (2), the inner of described manhole pipe (4) extends in inner container (1), and described manhole pipe's 4 inner outer surface and inner container (1) are tightly connected, described manhole pipe's (4) outer end is positioned at outer container (2) outer surface, described manhole pipe's (4) outer end is provided with capping (41), the internal surface sealing manhole pipe's (4) of described capping (41) outer end, described capping (41) outer surface is provided with terminal box (43), described inner container (1) bottom is provided with immersed pump (5), described immersed pump (5) has delivery outlet (51), on described outer container (2), be provided with the output valve (21) being communicated with inner container (1), described delivery outlet (51) pipe is received output valve (21), the live wire that described immersed pump (5) has and datawire are connected to terminal box (43).
2. internal pump formula LNG storage tank as claimed in claim 1, is characterized in that: welding between the outer surface that described manhole pipe (4) is inner and inner container (1); The outer surface suit corrugated expansion joint (42) of described manhole pipe (4) outer end, the wavy surface of described corrugated expansion joint (42) is connected with outer container (2).
3. internal pump formula LNG storage tank as claimed in claim 1, it is characterized in that: on described manhole pipe's (4) inwall, be provided with the ring plate (44) with center hole, cover plate (45) is set in described ring plate (44), the center hole that described cover plate (45) seal ring piece (44) has, fill insulant material (46) between described cover plate (45) and capping (41).
4. internal pump formula LNG storage tank as claimed in claim 3, it is characterized in that: between described cover plate (45) and ring flat-plate (44), be provided with gasket seal, described ring flat-plate is provided with screw thread counter sink on (44), on described cover plate (45), be provided with the tapped through hole corresponding with the upper screw thread counter sink of ring flat-plate (44), between described cover plate (45) and ring flat-plate (44), be connected by screw.
5. internal pump formula LNG storage tank as claimed in claim 1, is characterized in that: described inner container (1) bottom is provided with support (6), and described immersed pump (5) is arranged on support (6).
6. the internal pump formula LNG storage tank as described in claim 1,2,3,4 or 5, is characterized in that: described inner container (1) bottom is provided with groove (11), and the entry end of described immersed pump (5) is positioned at groove (11).
7. the internal pump formula LNG storage tank as described in claim 1,2,3,4 or 5, is characterized in that: described thermal-protective coating (3) filling pearlife.
CN201420234108.2U 2014-05-08 2014-05-08 Internal pump type LNG (liquefied natural gas)storage tank Expired - Fee Related CN203823425U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201420234108.2U CN203823425U (en) 2014-05-08 2014-05-08 Internal pump type LNG (liquefied natural gas)storage tank

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201420234108.2U CN203823425U (en) 2014-05-08 2014-05-08 Internal pump type LNG (liquefied natural gas)storage tank

Publications (1)

Publication Number Publication Date
CN203823425U true CN203823425U (en) 2014-09-10

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Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105570665A (en) * 2014-10-10 2016-05-11 南通中集罐式储运设备制造有限公司 Bunkering storage tank system for ship and liquefied natural gas (LNG) bunkering pontoon with storage tank system
CN105782708A (en) * 2016-04-29 2016-07-20 新兴能源装备股份有限公司 Tank internally-arranged pump structure of liquefied natural gas mobile filling vehicle
CN105864629A (en) * 2016-04-25 2016-08-17 新兴能源装备股份有限公司 Pump tank integrated cryogenic tank
CN106523902A (en) * 2016-12-20 2017-03-22 山东新兴重工科技发展有限公司 Low-temperature liquid filling vehicle for built-in pump
CN107631170A (en) * 2017-07-31 2018-01-26 新兴能源装备股份有限公司 A kind of liquefied natural gas liquid discharge device

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105570665A (en) * 2014-10-10 2016-05-11 南通中集罐式储运设备制造有限公司 Bunkering storage tank system for ship and liquefied natural gas (LNG) bunkering pontoon with storage tank system
CN105570665B (en) * 2014-10-10 2018-01-05 南通中集能源装备有限公司 Filling tank system peculiar to vessel and the LNG filling landing stage with the tank system
CN105864629A (en) * 2016-04-25 2016-08-17 新兴能源装备股份有限公司 Pump tank integrated cryogenic tank
CN105782708A (en) * 2016-04-29 2016-07-20 新兴能源装备股份有限公司 Tank internally-arranged pump structure of liquefied natural gas mobile filling vehicle
CN105782708B (en) * 2016-04-29 2018-09-14 新兴能源装备股份有限公司 Liquefied natural gas movement filling vehicle tank internal pump structure
CN106523902A (en) * 2016-12-20 2017-03-22 山东新兴重工科技发展有限公司 Low-temperature liquid filling vehicle for built-in pump
CN107631170A (en) * 2017-07-31 2018-01-26 新兴能源装备股份有限公司 A kind of liquefied natural gas liquid discharge device

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GR01 Patent grant
CF01 Termination of patent right due to non-payment of annual fee
CF01 Termination of patent right due to non-payment of annual fee

Granted publication date: 20140910

Termination date: 20170508