CN108869239A - Cryogenic pump sump system and LNG gas station - Google Patents
Cryogenic pump sump system and LNG gas station Download PDFInfo
- Publication number
- CN108869239A CN108869239A CN201710339597.6A CN201710339597A CN108869239A CN 108869239 A CN108869239 A CN 108869239A CN 201710339597 A CN201710339597 A CN 201710339597A CN 108869239 A CN108869239 A CN 108869239A
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- China
- Prior art keywords
- tube
- outer barrel
- pump sump
- cryogenic pump
- pipe
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- 239000011229 interlayer Substances 0.000 claims abstract description 12
- 239000010410 layer Substances 0.000 claims description 18
- 239000007788 liquid Substances 0.000 claims description 16
- 230000008676 import Effects 0.000 claims description 11
- 238000009413 insulation Methods 0.000 claims description 7
- 238000006073 displacement reaction Methods 0.000 abstract description 15
- 239000007789 gas Substances 0.000 description 13
- 239000003949 liquefied natural gas Substances 0.000 description 10
- 238000003466 welding Methods 0.000 description 8
- 238000010521 absorption reaction Methods 0.000 description 4
- 238000001816 cooling Methods 0.000 description 4
- 238000003032 molecular docking Methods 0.000 description 4
- 238000006243 chemical reaction Methods 0.000 description 3
- 239000012071 phase Substances 0.000 description 3
- 238000001514 detection method Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000004927 fusion Effects 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000002035 prolonged effect Effects 0.000 description 2
- 229910000963 austenitic stainless steel Inorganic materials 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 238000005253 cladding Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000007791 liquid phase Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000004321 preservation Methods 0.000 description 1
- 238000006748 scratching Methods 0.000 description 1
- 230000002393 scratching effect Effects 0.000 description 1
- 239000003351 stiffener Substances 0.000 description 1
- 239000005439 thermosphere Substances 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B37/00—Pumps having pertinent characteristics not provided for in, or of interest apart from, groups F04B25/00 - F04B35/00
- F04B37/06—Pumps having pertinent characteristics not provided for in, or of interest apart from, groups F04B25/00 - F04B35/00 for evacuating by thermal means
- F04B37/08—Pumps having pertinent characteristics not provided for in, or of interest apart from, groups F04B25/00 - F04B35/00 for evacuating by thermal means by condensing or freezing, e.g. cryogenic pumps
-
- 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
-
- 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
- F17C5/00—Methods or apparatus for filling containers with liquefied, solidified, or compressed gases under pressures
- F17C5/02—Methods or apparatus for filling containers with liquefied, solidified, or compressed gases under pressures for filling with liquefied gases
-
- 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
- F17C2223/00—Handled fluid before transfer, i.e. state of fluid when stored in the vessel or before transfer from the vessel
- F17C2223/01—Handled fluid before transfer, i.e. state of fluid when stored in the vessel or before transfer from the vessel characterised by the phase
- F17C2223/0146—Two-phase
- F17C2223/0153—Liquefied gas, e.g. LPG, GPL
- F17C2223/0161—Liquefied gas, e.g. LPG, GPL cryogenic, e.g. LNG, GNL, 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
- F17C2227/00—Transfer of fluids, i.e. method or means for transferring the fluid; Heat exchange with the fluid
- F17C2227/01—Propulsion of the fluid
- F17C2227/0128—Propulsion of the fluid with pumps or compressors
- F17C2227/0135—Pumps
- F17C2227/015—Pumps with cooling of the pump
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Filling Or Discharging Of Gas Storage Vessels (AREA)
- Quick-Acting Or Multi-Walled Pipe Joints (AREA)
Abstract
The present invention discloses a kind of cryogenic pump sump system comprising pump pond body, pump pond body includes inner cylinder for storing cryogenic media and the outer barrel being sheathed on outside inner cylinder, and Sealed sandwich is constituted between inner cylinder and outer barrel.Further include：For liquor charging phase or the delivery pipe of gas phase media, delivery pipe includes inner tube and outer tube, one end of inner tube is located at except outer barrel, the other end is in the interlayer that outer barrel protrudes into inside and outside cylinder and is fixed on inner cylinder, and inner tube is connected to inner cylinder, and outer tube is located at the outside of outer barrel and is socketed in outside inner tube, one end of outer tube is fixed in inner tube, the other end is fixed on outer barrel, and Sealed sandwich is constituted between inner and outer pipe, and outer tube is equipped with the flexible pipe of tool retractility.Flexible pipe with retractility can be bent, stretches, compress.Therefore suction line can be compensated in axial, angular, transverse direction and combinations of directions displacement.The present invention also provides a kind of LNG gas stations including above-mentioned cryogenic pump sump system.
Description
Technical field
The present invention relates to low temperature liquid natural gas field more particularly to a kind of cryogenic pump sump system and LNG gas stations.
Background technique
Cryogenic pump sump is a critical component in entire LNG gas station, needs to be subjected to -162 DEG C low in operational process
Mild and its internal pressure medium, so the design in pump pond is particularly important for LNG liquid addition sled.
Currently, the feed liquor pipeline of cryogenic pump sump generally comprises inner tube, outer tube and end cap in industry, between outer tube and outer barrel
It is welded to connect for emplacement type or plug-in type, the outside of outer tube and end cap is welded to connect；The connection of the inner hole welding of rapid cooling of inner tube and end cap
Meanwhile being also inserted into and welding with the aperture of inner cylinder body side surface, inner tube, outer tube and end cap are stiffener；The structure of vapor return line
It is identical as feed liquor pipeline.
In use, the connecting portion of feed liquor pipeline and outer tube and outer barrel in vapor return line structure can all generate it is very high
Local stress, there is serious security risks, are not able to satisfy the safety requirements of gas station.
Summary of the invention
It is an object of the invention to solve that inner and outer pipe and outer barrel connecting portion can be effectively improved in the prior art, outside
Connecting portion between pipe and inner tube, the stress state technical problem of the connecting portion between inner tube and inner cylinder, and provide one
Kind cryogenic pump sump system and LNG gas station.
The present invention proposes a kind of cryogenic pump sump system, including pump pond body, and the pump pond body includes for storing cryogenic media
Inner cylinder and the outer barrel that is sheathed on outside the inner cylinder, constitute clips between the inner cylinder and the outer barrel
Layer, further include：To convey the delivery pipe of liquid phase or gas phase media；
One end of delivery pipe, including inner tube and outer tube, said inner tube is located at except the outer barrel, and the other end passes through described outer
Cylinder and in the interlayer that protrudes between inside and outside cylinder and be fixed on the inner cylinder, said inner tube is connected to the inner cylinder, described
Outer tube is located at the outside of the outer barrel and is socketed in outside said inner tube, and one end of the outer tube is fixed in said inner tube, separately
The outer barrel is fixed in one end, and Sealed sandwich is constituted between inner and outer pipe, and the outer tube is equipped with the flexible pipe of tool retractility.
Further, the outer tube includes being fixed on the first extension tube attached of said inner tube and being fixedly installed in described outer
Second extension tube attached of cylinder, the both ends of the flexible pipe are individually fixed in first extension tube attached and the second extension tube attached.
Further, the flexible pipe is bellows.
Further, the flexible pipe includes wave crest section, trough section and the interlude for being connected to wave crest section Yu trough section,
The wave crest section is parallel to the radial direction of said inner tube close to said inner tube, the interlude far from said inner tube, the trough section.
Further, first extension tube attached, the second extension tube attached are connect with the trough section of the flexible pipe.
Further, the end that second extension tube attached is contacted with outer barrel has an outer groove, and the outer groove and outer
The face that barrel outer surface matches is arcwall face.
Further, the outer tube further includes end cap, and the end cap includes lid and bends extension by lid edge perpendicular
And the cover rim constituted, be provided with perforation on the lid, said inner tube through the interlayer being pierced by between inner and outer pipes and with wear
The peritreme in hole is tightly connected, and the cover rim is connected with the described first external seal of tube docking.
Further, said inner tube includes interior inlet pipe and connector, and described connector one end is connected to the interior inlet pipe, the other end
It is connected to the inner cylinder.
Further, the width for the Sealed sandwich of the connector being approximately equal to the length between inside and outside cylinder, the connector
Main part is in the Sealed sandwich between inside and outside cylinder, one end micro stretching of the connector go out outside the outer barrel and with institute
It states interior inlet pipe to be welded to connect, and the weld seam that connector is connect with the interior inlet pipe is located at outside outer barrel.
Further, the connector is the connector of not uniform thickness tube wall, and pipe thickness of the connector at inner cylinder is greater than it
With the pipe thickness of interior inlet pipe junction.
Further, the Sealed sandwich between the Sealed sandwich and inner and outer pipe between the outer barrel and the inner cylinder
Connection, and it is true dead level.
Further, the side wall of the outer barrel opens up import, and the bore of the import is greater than the outer diameter of said inner tube simultaneously
Gap is formed between import periphery and said inner tube outer wall.
Further, the outer wall of the inner cylinder, the outer wall of inner tube are coated with heat insulation layer.
Further, the delivery pipe is multiple, and wherein at least one is the feed liquor that liquid medium is inputted to the inner cylinder
Pipe, at least one is the muffler for conveying gas medium, and the muffler is located at the top of the inlet tube.
Further, the angle between the inlet tube and the axis of the muffler is 30-90 degree.
Further, the angle between the inlet tube and the axis of the muffler is 45 degree.
The present invention also provides LNG gas stations comprising foregoing cryogenic pump sump system.
Compared with prior art, the present invention has the advantages that：
There is cryogenic pump sump system of the invention the flexible pipe of retractility can be bent, stretch, compress.Therefore absorption tube can be compensated
Road is in axial, angular, transverse direction and combinations of directions displacement.Specifically, cryogenic pump sump feed liquor it is cooling, fill and drain,
During storage, inner cylinder, delivery pipe and outer barrel are respectively at different cold-hot conditions, between each other different thermal expansion meetings
Biggish reaction force is generated, the delivery pipe for being arranged in pump pond body side wall also shrinkage can generate axial displacement due to the temperature difference.Meanwhile
The upward shrinkage displacement generated by inner cylinder by the temperature difference is influenced, and delivery pipe generates the angular displacement upward deflected.These
Displacement is arranged on the flexible pipe institute absorption compensation of outer tube.Therefore, flexible pipe can be effectively improved outer tube and outer barrel, end cap
With the connecting portion between inner tube, inner tube and inner cylinder, connecting portion between outer tube and inner tube, between inner tube and inner cylinder
The stress state of connecting portion is eliminated safe hidden trouble, is prolonged its service life.
Detailed description of the invention
Fig. 1 is the structure chart of cryogenic pump sump system described in one embodiment of the invention.
Fig. 2 is the partial enlarged view of Fig. 1.
Fig. 3 is the structure chart of cryogenic pump sump system described in another embodiment of the present invention.
Specific embodiment
Principle and structure in order to further illustrate the present invention carry out the preferred embodiment of the present invention now in conjunction with attached drawing detailed
It describes in detail bright.
Referring to Fig. 1, a kind of cryogenic pump sump system includes pump pond body 11 and the conveying for liquor charging phase or gas phase media
Pipe 13.
The pump pond body 11 includes inner cylinder 110 for storing cryogenic media and is sheathed on outside the inner cylinder 110
Outer barrel 114, constitute Sealed sandwich between the inner cylinder 110 and the outer barrel 114.
Delivery pipe 13 include inner tube 132 and outer tube 150, one end of said inner tube 132 be located at the outer barrel 114 it
Outside, the other end in the interlayer that the outer barrel 114 protrudes into inside and outside cylinder 110,114 and is fixed on the inner cylinder
Body 110, said inner tube 132 are connected to the inner cylinder 110.The outer tube 150 is located at the outside of the outer barrel 114 and is socketed in
Outside said inner tube 132, one end of the outer tube 150 is fixed in said inner tube 132, and the other end is fixed on the outer barrel 114,
Sealed sandwich is constituted between inner and outer pipe, the outer tube 150 is equipped with the flexible pipe 156 of tool retractility.
Flexible pipe 156 with retractility can be bent, stretches, compress.Therefore, suction line can be compensated in axial direction, angle
To, the displacement of transverse direction and combinations of directions.Specifically, cryogenic pump sump feed liquor it is cooling, fill and during drain, storage,
Inner cylinder 110, delivery pipe 13 and outer barrel 114 are respectively at different cold-hot conditions, and different thermal expansions can produce between each other
Raw biggish reaction force, the delivery pipe 13 for being arranged in pump 11 side wall of pond body also shrinkage can generate axial displacement due to the temperature difference.Together
When, it is influenced by the upward shrinkage displacement that inner cylinder 110 is generated by the temperature difference, delivery pipe 13 generates the angular position upward deflected
It moves.These displacements are arranged on 156 absorption compensations of flexible pipe of outer tube 150.
The outer tube 150 includes being fixed on the first extension tube attached 152 of inner tube 132 and being fixedly installed in the outer barrel
114 the second extension tube attached 154, it is external that the both ends of the flexible pipe 156 are individually fixed in first extension tube attached 152 and second
Pipe 154.In illustrated embodiment, the both ends of flexible pipe 156 are individually fixed in first extension tube attached 152 and the second extension tube attached 154
Outer wall.
In another embodiment, the outer tube 150 further includes end cap 170, and end cap 170 is including lid 172 and by lid 172
Edge perpendicular bending extends and the cover rim 174 of composition, is provided with perforation on the lid 172, said inner tube 132 is through the perforation
The interlayer that is pierced by between inner and outer pipes is simultaneously tightly connected with the peritreme of perforation, the cover rim 174 and 152 total cross-section of the first extension tube attached
The docking of through welding is connected.
The flexible pipe 156 is bellows.Preferably, it is shape of threads bellows or the bellows of ring bellows.
In the illustrated embodiment, referring to Fig. 2, the flexible pipe 156 includes wave crest section 1561, trough section 1562 and connects
It is connected to the interlude 1563 of wave crest section 1561 Yu trough section 1562.The wave crest section 1561 is far from said inner tube 132, the trough
For section 1562 close to said inner tube 132, the interlude 1563 is parallel to the radial direction of said inner tube 132.First extension tube attached
152, the second extension tube attached 154 is connect with the trough section 1562 of the flexible pipe 156.
The end that second extension tube attached 154 is contacted with outer barrel 114 has outer groove, and the outer groove and outer barrel
The face that 114 outer surfaces match is arcwall face.
Said inner tube 132 includes interior inlet pipe 135 and connector 137.Described 137 one end of connector is connected to the interior inlet pipe 135,
The other end is connected to the inner cylinder 110.In the present embodiment, interior inlet pipe 135 is Austenitic stainless steel pipe.The connector 137
The Sealed sandwich being approximately equal to the length between inside and outside cylinder 110,114 width, the main part of the connector 137 be located at it is interior,
In Sealed sandwich between outer barrel 110,114, one end micro stretching of the connector 137 go out 114 outside of the outer barrel and with it is described
Interior inlet pipe 135 is welded to connect, and the weld seam that connector 137 is connect with the interior inlet pipe 135 is located at outside outer barrel 114.Connector 137
It is that complete penetraction and fusion in welding is connect with the connection of inner cylinder 110.In other words, the connector 137 stretch out 114 outside of the outer barrel with it is described
Interior inlet pipe 135 is welded to connect, and is located at connector 137 and the weld seam of the interior inlet pipe 135 outside outer barrel 114, that is, connector 137
One end flushed with the inner wall of inner cylinder 110, the other end stretch out outer barrel 114 and between outer barrel 114 there are gap, make in
Butt weld between inlet pipe 135 and connector 137 is located at outside outer barrel 114, is convenient for after the suit of outer barrel 114 to this weld seam
Carry out welding and detection.The connector 137 is the connector of not uniform thickness tube wall, pipe thickness of the connector 137 at inner cylinder 110
Greater than the pipe thickness of itself and interior 135 junction of inlet pipe.Thicker connector 137 can be connect with compensation joint 137 with inner cylinder 110
Place, relatively thin one end are convenient for being welded to connect with interior inlet pipe 135.
Sealed sandwich between outer barrel and inner cylinder can vacuumize to form vacuum layer.That is, state outer barrel 114 with it is described
Vacuum layer is formed between inner cylinder 110, forms vacuum layer between the outer tube 150 and said inner tube 132.And the outer barrel
The vacuum layer formed between the vacuum layer and the outer tube 150 and said inner tube 132 that are formed between 114 and the inner cylinder 110 connects
It is logical.The outer wall of the inner cylinder 110, the outer wall of inner tube 132 are coated with heat insulation layer 180.The setting of heat insulation layer 180 guarantees heat preservation
Effect.
The side wall of the outer barrel 114 opens up import, the bore of the import be greater than the outer diameter of said inner tube 132 and into
Gap is formed between mouth periphery and 132 outer wall of said inner tube.Biggish import can be convenient the guarantor outside the connector 137 of inner tube 132
The package of warm layer.
Referring to Fig. 3, in another embodiment, the delivery pipe be it is multiple, wherein at least one is inputs liquid medium
The inlet tube of the inner cylinder, at least one is the muffler for conveying gas medium, and the muffler is located at the upper of the inlet tube
Side.
In illustrated embodiment, delivery pipe includes being illustrated for inlet tube 20 and muffler 40.
A kind of cryogenic pump sump system includes pump pond body 60, and the pump pond body 60 includes the inner cylinder 61 and set for liquid storage
Outer barrel 63 outside the inner cylinder 61 comprising：
Inlet tube 20 includes feed liquor inner tube 22 and feed liquor outer tube 24.One end of the feed liquor inner tube 22 be located at the outer barrel 63 it
Outside, the other end in the interlayer that the outer barrel 63 protrudes into inside and outside cylinder 61,63 and is fixed on the inner cylinder
61, the feed liquor inner tube 22 is connected to the inner cylinder 61, and the feed liquor outer tube 24 is located at the outside of the outer barrel 63 and socket
Outside the feed liquor inner tube 22, one end of the feed liquor outer tube 24 is fixed in the feed liquor inner tube 22, and the other end is fixed on institute
Outer barrel 63 is stated, Sealed sandwich is constituted between inner and outer pipe, the feed liquor outer tube 24 is equipped with the feed liquor flexible pipe 241 of tool retractility.
Muffler 40 includes return-air inner tube 42 and return-air outer tube 44.One end of the return-air inner tube 42 is located at the outer barrel
Except 63, the other end is in the interlayer that the outer barrel 63 protrudes into inside and outside cylinder 61,63 and is fixed on the inner cylinder
On the outer wall of body 61, the return-air inner tube 42 is connected to the inner cylinder 61, and the return-air outer tube 44 is located at the outer barrel 63
Outside is simultaneously socketed in outside the return-air inner tube 42, and described 44 one end of return-air outer tube is fixed in the return-air inner tube 42, the other end
It is fixed on the outer barrel 63, Sealed sandwich is constituted between inner and outer pipe, the return-air that the return-air outer tube 44 is equipped with tool retractility is scratched
Property pipe 441.
The feed liquor outer tube 24 includes the first feed liquor extension tube attached 242 and fixed peace for being fixed on the feed liquor inner tube 22
The second feed liquor extension tube attached 243 loaded on the outer barrel 63, the both ends of the feed liquor flexible pipe 241 are individually fixed in described first
The outer wall of feed liquor extension tube attached 242, the second feed liquor extension tube attached 243.
The return-air outer tube 44 includes the first return-air extension tube attached 442 and fixed peace for being fixed on the return-air inner tube 42
The second return-air extension tube attached 443 loaded on the outer barrel 63, the both ends of the return-air flexible pipe 441 are individually fixed in described first
The outer wall of return-air extension tube attached 442, the second return-air extension tube attached 443.
Form pump pond body vacuum layer between the outer barrel 63 and the inner cylinder 61, the feed liquor outer tube 24 with it is described into
The feed liquor vacuum layer formed between liquid inner tube 22 is connected to the vacuum layer of the pump pond body, in the return-air outer tube 44 and the return-air
The return-air vacuum layer formed between pipe 42 is connected to the vacuum layer of the pump pond body.
In one embodiment, feed liquor flexible pipe, return-air flexible pipe are bellows.
Fig. 3, the feed liquor flexible pipe 241 are please referred to including wave crest section, trough section and is connected to wave crest section and trough section
Interlude, the wave crest section is far from the feed liquor inner tube 22, and the trough section is close to the feed liquor inner tube 22, the interlude
It is parallel to the radial direction of the feed liquor inner tube 22.
Return-air flexible pipe 441 includes wave crest section, trough section and the interlude for being connected to wave crest section Yu trough section, the wave
Crest segment is parallel to the return-air close to the return-air inner tube 42, the interlude far from the return-air inner tube 42, the trough section
The radial direction of inner tube 42.
The first feed liquor extension tube attached 242, trough Duan Lian of the second feed liquor extension tube attached 243 with the feed liquor flexibility pipeline section
It connects.The first return-air extension tube attached 442, the second return-air extension tube attached 443 are connect with the return-air flexibility pipeline section trough section.
The end that the second feed liquor extension tube attached 243 is contacted with outer barrel 63 has an outer groove, and the outer groove and outer
The face that 63 outer surface of cylinder matches is arcwall face.The end that the second return-air extension tube attached 443 is contacted with outer barrel 63 has
Outer groove, and the face that the outer groove matches with 63 outer surface of outer barrel is arcwall face.
The inlet tube 20 further includes feed liquor end cap 270, and the feed liquor end cap 270 is including lid 271 and by lid 271 weeks
Marginal lappet directly bends the cover rim 272 for extending and constituting, and perforation is provided on the lid 271, is worn described in the warp of feed liquor inner tube 22
Hole is pierced by the interlayer between feed liquor inner and outer pipes and is tightly connected with the peritreme of perforation, and the cover rim 272 and first feed liquor are external
The docking of pipe 242 is connected.
The muffler 40 further includes return-air end cap 470, and the return-air end cap 470 is including lid 471 and by lid 471 weeks
Marginal lappet directly bends the cover rim 472 for extending and constituting, and perforation is provided on the lid 471, is worn described in the warp of return-air inner tube 42
Hole is pierced by the interlayer between return-air inner and outer pipes and is tightly connected with the peritreme of perforation, and the cover rim 472 and first return-air are external
The docking of pipe 442 is connected.
The feed liquor inner tube 22 includes inlet pipe 23 and liquid inlet joint 25, and described 25 one end of liquid inlet joint and the inlet pipe 23 connect
Logical, the other end is connected to the inner cylinder 61.The return-air inner tube 42 includes return pipe 43 and return-air connector 45, the return-air connector
45 one end are connected to the return pipe 43, and the other end is connected to the inner cylinder 61.
Liquid inlet joint 25 and return-air connector 45 are first inserted into the inner wall of inner cylinder 61, liquid inlet joint 25 and return-air connector 45
It is linked together between inner cylinder 61 using total cross-section through welding connector.One end and inner cylinder of liquid inlet joint 25 and return-air connector 45
The inner wall of body 61 flushes, and then offset to one side outer barrel 63, is allowed to inner cylinder 61 into eccentric position, eccentric distance should be able to be protected
Liquid inlet joint 25 and return-air connector 45 during card suit can be fully located in vacuum interlayer, up move outer cylinder from lower end
Body 63, until liquid inlet joint 25 and return-air connector 45 can be stretched out from the hole of 63 side of outer barrel, to diagram right direction
Mobile outer barrel 63, it is coaxial between guarantee inner cylinder 61 and outer barrel 63, just complete the suit of outer barrel 63.Again by inlet tube
23 and muffler 43 respectively with liquid inlet joint 25 and the 45 complete penetraction and fusion in welding butt welding of return-air connector at feed liquor inner tube 22 and return-air inner tube
42, detection then is carried out to two weld seams and completes the cladding of heat insulation layer to inner tube.
The liquid inlet joint 25 is stretched out 63 outside of outer barrel and is welded to connect with the inlet tube 23, and liquid inlet joint 25 is made
It is located at outside outer barrel 63 with the weld seam of the inlet tube 23.The return-air connector 45 stretch out 63 outside of the outer barrel with it is described
Muffler 43 is welded to connect, and is located at return-air connector 45 and the weld seam of the muffler 43 outside outer barrel 63.
The outer wall of the inner cylinder 61, the outer wall of feed liquor inner tube 22, return-air inner tube 42 outer wall be coated with heat insulation layer.Absolutely
The setting of thermosphere guarantees heat insulation effect.
Angle between the inlet tube 20 and the axis of the muffler 40 is 30-90 degree.Preferably, the inlet tube 20
Angle between the axis of the muffler 40 is 45 degree.
The side wall of the outer barrel 63 opens up import, and the bore of the import is greater than the outer diameter of the feed liquor inner tube 22.Institute
The side wall for stating outer barrel 63, which opens up, answers back, and the bore answered back is greater than the outer diameter of the return-air inner tube 42.
In other examples, delivery pipe can also including drain pipe etc. other pipelines structure.This will not be repeated here.
The present embodiment also provides a kind of LNG gas station, and LNG gas station includes above-mentioned cryogenic pump sump system.
LNG gas station with cryogenic pump sump system, since cryogenic pump sump system has flexible pipe.Scratching with retractility
Property pipe can be bent, stretches, compress.Therefore, suction line can be compensated in axial, angular, transverse direction and combinations of directions displacement.
Specifically, cryogenic pump sump feed liquor it is cooling, fill and during drain, storage, inner cylinder, delivery pipe and outer barrel are located respectively
In different cold-hot conditions, different thermal expansions can generate biggish reaction force between each other, be arranged in pump pond body side wall
Delivery pipe also shrinkage can generate axial displacement due to the temperature difference.Meanwhile the upward shrinkage displacement generated by inner cylinder by the temperature difference
Influence, delivery pipe generates the angular displacement that upward deflects.These displacements are arranged on the flexible pipe institute absorption compensation of outer tube.
Therefore, flexible pipe can be effectively improved answering for the connecting portion between outer tube and outer barrel, end cap and inner tube, inner tube and inner cylinder
Power situation is eliminated safe hidden trouble, is prolonged its service life.
The above is only preferable possible embodiments of the invention, not limit the scope of the invention, all with the present invention
The variation of equivalent structure made by specification and accompanying drawing content, is included within the scope of protection of the present invention.
Claims (17)
1. a kind of cryogenic pump sump system, including pump pond body, the pump pond body include inner cylinder for storing cryogenic media and
The outer barrel being sheathed on outside the inner cylinder constitutes Sealed sandwich between the inner cylinder and the outer barrel, which is characterized in that
Further include：For liquor charging phase or the delivery pipe of gas phase media；
One end of delivery pipe, including inner tube and outer tube, said inner tube is located at except the outer barrel, and the other end passes through described outer
Cylinder and in the interlayer that protrudes between inside and outside cylinder and be fixed on the inner cylinder, said inner tube is connected to the inner cylinder, described
Outer tube is located at the outside of the outer barrel and is socketed in outside said inner tube, and one end of the outer tube is fixed in said inner tube, separately
The outer barrel is fixed in one end, and Sealed sandwich is constituted between inner and outer pipe, and the outer tube is equipped with the flexible pipe of tool retractility.
2. cryogenic pump sump system as described in claim 1, which is characterized in that the outer tube includes be fixed on said inner tube
One extension tube attached and the second extension tube attached for being fixedly installed in the outer barrel, the both ends of the flexible pipe are individually fixed in described
First extension tube attached and the second extension tube attached.
3. cryogenic pump sump system as described in claim 1, which is characterized in that the flexible pipe is bellows.
4. cryogenic pump sump system as claimed in claim 2, which is characterized in that the flexible pipe include wave crest section, trough section with
And be connected to the interlude of wave crest section Yu trough section, the wave crest section far from said inner tube, the trough section close to said inner tube,
The interlude is parallel to the radial direction of said inner tube.
5. cryogenic pump sump system as claimed in claim 4, which is characterized in that first extension tube attached, the second extension tube attached with
The trough section of the flexible pipe connects.
6. cryogenic pump sump system as claimed in claim 2, which is characterized in that the end that second extension tube attached is contacted with outer barrel
Portion has outer groove, and the face that the outer groove matches with outer cylinder external surface is arcwall face.
7. cryogenic pump sump system as claimed in claim 2, which is characterized in that the outer tube further includes end cap, the end cap packet
It includes lid and the cover rim for extending and constituting is bent by lid edge perpendicular, be provided with perforation on the lid, said inner tube is through institute
It states the interlayer between being pierced by inner and outer pipes and is tightly connected with the peritreme of perforation, the cover rim and the described first external seal of tube pair
It connects connected.
8. cryogenic pump sump system as described in claim 1, which is characterized in that said inner tube includes interior inlet pipe and connector, described
Connector one end is connected to the interior inlet pipe, and the other end is connected to the inner cylinder.
9. cryogenic pump sump system as claimed in claim 8, which is characterized in that the connector is approximately equal to the length to inside and outside cylinder
The width of Sealed sandwich between body, the main part of the connector is in the Sealed sandwich between inside and outside cylinder, the connector
One end micro stretching goes out outside the outer barrel and is welded to connect with the interior inlet pipe, and the weld seam position that connector is connect with the interior inlet pipe
Outside outer barrel.
10. cryogenic pump sump system as claimed in claim 8, which is characterized in that the connector is the connector of not uniform thickness tube wall, is connect
Pipe thickness at the nearly inner cylinder of head rest is greater than the pipe thickness of itself and interior inlet pipe junction.
11. cryogenic pump sump system as described in claim 1, which is characterized in that between the outer barrel and the inner cylinder
Sealed sandwich connection between Sealed sandwich and inner and outer pipe, and it is true dead level.
12. the cryogenic pump sump system as described in claim 1 or 11, which is characterized in that the side wall of the outer barrel opens up import,
The bore of the import is greater than the outer diameter of said inner tube and forms gap between import periphery and said inner tube outer wall.
13. cryogenic pump sump system as described in claim 1, which is characterized in that outer wall, the outer wall of inner tube of the inner cylinder are equal
It is coated with heat insulation layer.
14. the cryogenic pump sump system as described in claim 1-13, which is characterized in that the delivery pipe be it is multiple, wherein at least
One is the inlet tube that liquid medium is inputted to the inner cylinder, and at least one is the muffler for conveying gas medium, the muffler
Positioned at the top of the inlet tube.
15. cryogenic pump sump system as claimed in claim 14, which is characterized in that the axis of the inlet tube and the muffler
Between angle be 30-90 degree.
16. cryogenic pump sump system as claimed in claim 15, which is characterized in that the axis of the inlet tube and the muffler
Between angle be 45 degree.
17. a kind of LNG gas station, which is characterized in that including cryogenic pump sump system as claimed in claim 14.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710339597.6A CN108869239A (en) | 2017-05-15 | 2017-05-15 | Cryogenic pump sump system and LNG gas station |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710339597.6A CN108869239A (en) | 2017-05-15 | 2017-05-15 | Cryogenic pump sump system and LNG gas station |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108869239A true CN108869239A (en) | 2018-11-23 |
Family
ID=64320315
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710339597.6A Withdrawn CN108869239A (en) | 2017-05-15 | 2017-05-15 | Cryogenic pump sump system and LNG gas station |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108869239A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109362722A (en) * | 2018-12-11 | 2019-02-22 | 徐州徐薯薯业科技有限公司 | A kind of agricultural fumigant preparation facilities containing dry ice ingredient |
-
2017
- 2017-05-15 CN CN201710339597.6A patent/CN108869239A/en not_active Withdrawn
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109362722A (en) * | 2018-12-11 | 2019-02-22 | 徐州徐薯薯业科技有限公司 | A kind of agricultural fumigant preparation facilities containing dry ice ingredient |
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