CN103711720B - The horizontal LNG immersed pump of vacuum pond - Google Patents
The horizontal LNG immersed pump of vacuum pond Download PDFInfo
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- CN103711720B CN103711720B CN201310693892.3A CN201310693892A CN103711720B CN 103711720 B CN103711720 B CN 103711720B CN 201310693892 A CN201310693892 A CN 201310693892A CN 103711720 B CN103711720 B CN 103711720B
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- pump pond
- immersed pump
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Abstract
The present invention relates to and a kind of overall height vacuum horizontal LNG immersed pump pond, comprise pump pond body, immersed pump and bearing, in the liquid discharge device of lid inner side, described pump pond, it is also high-vacuum insulation structure, on the liquid outlet outer tube of lid outside, pump pond, be fixedly connected with vacuumizing joint, described drain pipe outer tube vacuumizing joint is communicated with space structure in liquid discharge device, and it forms immersed pump pond entirety for overall height vacuum insulation structure together with the inner/outer tube interlayer high-vacuum insulation of pump pond. Employing overall height vacuum insulation of the present invention, has completely cut off the hot approach of all leakages of convection current, conduction and radiant heat transfer, has good cold insulation performance; The day evaporation rate of the LNG liquid in this pump pond has reduced by 21.5% ~ 31.5% than the day evaporation rate in the vertical immersed pump pond of prior art. And be generalized on vehicle-mounted LNG transport and filling vehicle and use, significantly improve the economic benefit of LNG filling station and LNG transport and filling vehicle.
Description
Technical field
The present invention relates to a kind of LNG immersed pump pond, particularly the horizontal LNG immersed pump of a kind of vacuum pond.
Background technology
End in by the end of November, 2012, the domestic LNG Vehicle Fueling Station having put into operation has risen to more than 600; 2015-2020, LNG gas station quantity is estimated to exceed 10000, and industry development rising trend is surprising.
Liquefied natural gas (LNG) automobile is a kind of new-energy automobile; it has economy, safety, environmental protection; convenient, motor-driven, distance travelled is long; filling time short (with respect to compressed natural gas) etc. advantage; in recent years in city bus and heavy goods card; extensively being promoted the use of, is the desirable approach of city size Natural Gas Motor Vehicle. According to statistics, urban atmosphere pool environment pollutes 60% tail gas from motor vehicle. Test data shows: bus uses LNG fuel, and tail gas comprehensive discharge can decline 80% compared with fuel-engined vehicle vehicle. Development LNG automobile, construction LNG Vehicle Fueling Station are effective behaves that improvement motor vehicles exhaust emission improves atmosphere quality, and the development of LNG automobile is greatly conducive to atmosphere quality and improves.
LNG Vehicle Fueling Station station with equipment by: the equipment pipes such as LNG refrigerated storage tank, low-temperature centrifugation immersed pump, immersed pump pond, EAG and BOG heater, high-vacuum insulation pipe, filling machine, by-pass valve control and instrument and meter form. But LNG Vehicle Fueling Station station equipment lacks unified technological design, construction, examination maintenance national standard or professional standard. The particularly design of LNG Vehicle Fueling Station, stand and blindly indiscriminately imitate with equipment design-and-build, select and build very chaotic. Show as: system equipment design and running pressure disunity, low-temperature storage tank, vertical pump pond, pipeline and tank body interface, valve instrument interface, absolute altitude are arranged, insulation is poor, and evaporation rate is large, BOG gas discharge beyond standards, cause aerating ability to reduce, can not meet the requirement of many cars quick recharge.
In addition, LNG immersed pump and pump pond are the key equipments of realizing normal aerating operation. Now LNG Vehicle Fueling Station is " vertical non-vacuum LNG immersed pump pond " both at home and abroad, facts have proved: the antivacuum thermal insulation of the vessel flange lid at the difference in height of the liquid level in LNG basin and top, pump pond gas-phase space, the hydrostatic head of LNG immersed pump pond liquid phase import, top, pump pond etc. all directly affects the normal stable operation of LNG low-temperature centrifugal pump, simultaneously, whether normally the free rate of LNG refrigerated storage tank also affects operating cost and the immersed pump filling efficiency of operation of LNG Vehicle Fueling Station, does not reach the economic benefit of the expection of building a station at first.
Summary of the invention
The present invention is directed to the defect and the deficiency that in prior art, exist, provide a kind of low liquid level the stable horizontal LNG immersed pump of vacuum pond.
The technical solution used in the present invention is: the horizontal LNG immersed pump of a kind of vacuum pond, comprise pump pond body, immersed pump and bearing, described bearing is arranged on body bottom, pump pond, described pump pond body is made up of inner barrel and outer cylinder body, in described, between outer cylinder body, form high vacuum sandwich, on the outer wall of described outer cylinder body, be fixedly connected with vacuumizing joint, described vacuumizing joint with in, sandwich between urceolus is communicated with, in the liquid discharge device of lid inner side, described pump pond, it is also high-vacuum insulation structure, on the liquid outlet outer tube of lid outside, pump pond, be fixedly connected with vacuumizing joint, described drain pipe outer tube vacuumizing joint is communicated with space structure in liquid discharge device, it forms immersed pump pond entirety for overall height vacuum insulation structure together with the inner/outer tube interlayer high-vacuum insulation of pump pond. described immersed pump is arranged in the body of described pump pond, and both deads in line, described pump pond body horizontal cross is placed, this body exit, pump pond is connected with pump Chi Gai by pump pond body flange seal, lid inner side, described pump pond is fixedly connected with liquid discharge device, described liquid discharge device and inner barrel adopt socket joint syndeton, the drain pipe interface of described liquid discharge device passes pump Chi Gai and is communicated with the liquid outlet of immersed pump, and the sleeve of described pump pond body, liquid discharge device and pump discharge flange, pump pond cover and be equipped with at least reflective heat insulation layer of one deck.
Described liquid discharge device comprises drain pipe interface, pump discharge flange and sleeve, described immersed pump is fixed on pump discharge flange by securing member, described pump discharge flange is fixedly connected with pump Chi Gai by sleeve, this pump discharge flange is connected with inner barrel by adpting flange, described adpting flange is connected by connecting cylinder with pump pond body flange, between described connecting cylinder and sleeve, form vacuum interlayer structure, described pump discharge flange is connected with adpting flange socket joint.
Described drain pipe interface adopts high-vacuum insulation pipe to make.
Described feeding device comprises gas phase feed tube interface and liquid phase feed tube interface, and described gas phase feed tube interface and liquid phase feed tube interface are all fixed on the outer wall of outer cylinder body, and extends to the sidewall of inner barrel and be communicated with the inlet of described immersed pump.
In said structure, described gas phase feed tube interface is in the time that in use LNG storage tank, liquid is carried liquid to aerating island, and this mouth of pipe is gas phase feed tube interface; In the time utilizing immersed pump to unload, described gas phase feed tube interface is muffler.
Described gas phase feed tube interface and liquid phase inlet interface all adopt high-vacuum insulation pipe to make, and on described gas phase feed tube interface, offer temperature transmitter interface.
Between described inside and outside cylindrical shell, be uniformly distributed with 4 along the circumference for supporting the supporting construction of inside and outside cylindrical shell, described supporting construction is made up of stainless steel sleeve pipe and expoxy glass rod, described stainless steel sleeve pipe is fixed on inner barrel outer surface, described expoxy glass rod one end is sleeved in stainless steel sleeve pipe, and the other end contacts with outer cylinder body inner surface.
Described reflective heat insulation layer adopts aluminium foil and heat-insulating fiber paper interval to be entwined.
On the outer wall of described inner barrel, be fixedly connected with blow-down pipe interface, described blow-down pipe interface runs through outer cylinder body and is communicated with inner barrel inner chamber, on described inner barrel outer wall, is also provided with adsorbent of molecular sieve.
Described securing member is adjustment screw thimble assembly.
On the outer surface of described pump Chi Gai, be also fixedly connected with blow-off pipe interface and pump pond top flange lid LNG and reveal relief valve connection, described blow-off pipe interface runs through pump Chi Gai and pump discharge flange and is communicated with inner barrel inner chamber, and described pump pond lid LNG reveals relief valve connection and is communicated with through pump Chi Gai and with the sandwich sleeve and connecting cylinder.
Of the present invention have beneficial effect be fruit:
1, the chuck double-decker that the pump pond body in the horizontal immersed pump of the present invention pond is made up of inside and outside cylindrical shell, the outlet device in exit, pump pond is the top flange assembly of socket joint hermetically-sealed construction, in interlayer and top flange assembly have multilayer reflectorized material and heat-insulating material interval to be wound around, reflect away radiant heat transmission, and to interlayer pumping high vacuum, avoid convection heat transfer' heat-transfer by convection, add the heat conduction that the minimum ground of supporting construction is internal, outer cylinder body carries out of science, thereby pump pond body has good cold insulation performance, the day evaporation rate that the day evaporation rate of the LNG liquid in the horizontal immersed pump of vacuum of the present invention pond has reduced the LNG liquid in 21.5% ~ 31.5%(overall height vacuum horizontal immersed pump of the present invention pond than the day evaporation rate in the vertical immersed pump pond of prior art is 8.5%, the day evaporation rate of the LNG liquid in the vertical immersed pump of prior art pond is 27% ~ 40%), the top flange lid frosting of vertical immersed pump pond and the high problem of evaporation rate are thoroughly solved, thereby improve the filling efficiency rate of LNG filling station, reduce the operating cost of LNG filling station, and extend on vehicle-mounted LNG transport and filling vehicle and use, significantly improve the economic benefit of LNG filling station and LNG transport vehicle.
2, the horizontal gas returning port in immersed pump pond of the present invention and the absolute altitude of inlet are far below the minimum liquid level of storage tank, improve the front hydrostatic head of pump of immersed pump, storage tank also can ensure that in the time of low liquid level immersed pump complete wetting is in cryogenic liquid simultaneously, improved immersed pump pond low liquid level operation stability, can meet the requirement of any operating mode loading-unloading vehicle and filling completely, and no matter vertical, horizontal LNG storage tank, LNG liquid in all can emptying filling station in LNG storage tank, has avoided the emptying and waste of residual liquid in storage tank.
3, the horizontal immersed pump of the present invention pond has solved the contradiction between process duct open height between the LNG basin of LNG automobile filling station and vertical immersed pump pond, running is stable; And the outlet device in exit, pump of the present invention pond is socket joint hermetically-sealed construction, solved pump discharge frosting freeze evaporation rate high-leveled and difficult with problem，For promoting the extensive use at home of LNG automobile, improve city environmental quality, energy-saving and emission-reduction, promote the sustainable development of China's urban economy construction to make positive contribution.
4, the horizontal immersed pump pool structure of the present invention is simple, stable, reliable, with low cost, and the present invention has been generalized on vehicle-mounted LNG transport and filling vehicle and has used, and has significantly improved the economic benefit of LNG filling station and LNG transport and filling vehicle.
Brief description of the drawings
Fig. 1 is the sectional structure schematic diagram in the horizontal LNG immersed pump of vacuum of the present invention pond;
Fig. 2 is the left TV structure schematic diagram in the horizontal LNG immersed pump of vacuum of the present invention pond;
Fig. 3 is the structural representation of the supporting construction in the horizontal LNG immersed pump of vacuum of the present invention pond.
Number in the figure, 1, outside head, 2, outer cylinder body, 3, bearing, 4, vacuumizing joint, 5, backing plate, 6, pump pond body, 7, inner barrel, 8, adpting flange, 9, sleeve, 10, sealing ring, 11, gas phase feed tube interface, 12, reflective heat insulation layer, 13, adsorbent of molecular sieve, 14, blow-down pipe interface, 15, temperature transmitter interface, 16, liquid phase feed tube interface, 17, supporting construction, 18, pump Chi Gai, 19, blow-off pipe interface, 20, drain pipe interface, 21, relief valve connection, 22, relief valve connection, 23, pump pond body flange, 24, connecting cylinder, 25, pump discharge flange, 26, immersed pump, wherein, 17-1, stainless steel sleeve pipe, 17-2, expoxy glass rod.
Detailed description of the invention
Below in conjunction with the drawings and the specific embodiments, the present invention is described in further detail:
Embodiment: referring to Fig. 1, Fig. 2 and Fig. 3, a kind of horizontal LNG immersed pump of vacuum pond, comprise pump pond body 6, immersed pump and bearing 3, described bearing 3 is arranged on body 6 bottoms, pump pond, described pump pond body 6 is made up of inner barrel 7 and outer cylinder body 2, described inner barrel is made up of interior end socket and cylindrical tube, described outer cylinder body has outside head 1 and cylindrical tube to form, end socket and cylindrical shell junction are provided with backing plate 5, in described, outer cylinder body 7, between 2, form and vacuumize sandwich, on the outer wall of described outer cylinder body 2, be fixedly connected with vacuumizing joint 4, described vacuumize connect 4 with in, urceolus 7, sandwich between 2 is communicated with, described immersed pump 26 is arranged in described pump pond body 6, and both deads in line, described pump pond body horizontal cross is placed, this body exit, pump pond is sealedly connected with described in pump pump pond by pump pond body flange 23 and covers 18 inner sides and be fixedly connected with liquid discharge device, between described pump pond body flange 23 and pump pond lid 18, be provided with sealing ring 10, described liquid discharge device and inner barrel 6 adopt socket joint syndeton, the drain pipe interface 20 of described liquid discharge device passes pump pond lid 18 and is communicated with the liquid outlet of immersed pump 26, described pump pond body 6, the sleeve 9 of liquid discharge device and pump discharge flange 25, on pump pond lid 18, be equipped with at least reflective heat insulation layer 12 of one deck. in the liquid discharge device of lid inner side, described pump pond, it is also high-vacuum insulation structure, on the liquid outlet outer tube of lid outside, pump pond, be fixedly connected with vacuumizing joint, described drain pipe outer tube vacuumizing joint is communicated with space structure in liquid discharge device, and it forms immersed pump pond entirety for overall height vacuum insulation structure together with the inner/outer tube interlayer high-vacuum insulation of pump pond.
Described liquid discharge device comprises drain pipe interface 18, pump discharge flange 25 and sleeve 9, described immersed pump 26 is fixed on pump discharge flange 25 by securing member, described pump discharge flange 25 is fixedly connected with pump pond lid 18 by sleeve 9, this pump discharge flange 25 is connected with inner barrel by adpting flange 8, described adpting flange 8 is connected by connecting cylinder 24 with pump pond body flange 23, between described connecting cylinder 24 and sleeve 9, form vacuum interlayer structure, described pump discharge flange 25 is connected with adpting flange 23 socket joints.
Described drain pipe interface 20 adopts high-vacuum insulation pipe to make.
Described feeding device comprises gas phase feed tube interface 11 and liquid phase feed tube interface 16, described gas phase feed tube interface 11 and liquid phase feed tube interface 16 are all fixed on the outer wall of outer cylinder body 2, and extend to the sidewall of inner barrel 7 and be communicated with the inlet of described immersed pump 26.
In said structure, described gas phase feed tube interface is in the time that in use LNG storage tank, liquid is carried liquid to aerating island, and this mouth of pipe is gas phase feed tube interface; In the time utilizing immersed pump to unload, described gas phase feed tube interface is muffler.
Described liquid phase feed tube interface 16 and gas phase feed tube interface 11 adopt high-vacuum insulation pipe to make, and on described gas phase feed tube interface 11, offer temperature transmitter interface 15.
Between described inside and outside cylindrical shell 7,2, be uniformly distributed with 4 along the circumference for supporting the supporting construction 17 of inside and outside cylindrical shell, described supporting construction is made up of stainless steel sleeve pipe and expoxy glass rod, described stainless steel sleeve pipe is fixed on inner barrel outer surface, described expoxy glass rod 17-2 one end is sleeved in stainless steel sleeve pipe 17-1, the other end contacts with outer cylinder body inner surface, described expoxy glass rod 17-2 adopts the expoxy glass rod of excellent heat insulating performance, and described stainless steel sleeve pipe 17-1 adopts austenite stainless steel sleeve.
Described reflective heat insulation layer adopts aluminium foil and heat-insulating fiber paper interval to be entwined.
On the outer wall of described inner barrel 7, be fixedly connected with blow-down pipe interface 14, described blow-down pipe interface 14 runs through outer cylinder body 2 and is communicated with inner barrel 7 inner chambers, on described inner barrel 7 outer walls, is also provided with adsorbent of molecular sieve 13.
Described securing member is adjustment screw thimble assembly.
On the outer surface of described pump pond lid 18, be also fixedly connected with blow-off pipe interface 19 and pump pond top flange lid LNG leakage relief valve connection 21, described blow-off pipe interface 19 runs through pump pond lid 18 and pump discharge flange 25 and is communicated with inner barrel 7 inner chambers, and described pump pond top flange lid LNG reveals relief valve connection 21 through pump pond lid 19 and is communicated with the sandwich sleeve 9 and connecting cylinder 24.
Above detailed description of the invention is only preferred embodiment of the present invention, in order to limit the present invention, within the spirit and principles in the present invention not all, any amendment of making, is equal to replacement, improves, within all should being included in protection scope of the present invention.
Claims (9)
1. the horizontal LNG immersed pump of a vacuum pond, comprise pump pond body, immersed pump and bearing, described bearing is arranged on body bottom, pump pond, it is characterized in that: described pump pond body is made up of inner barrel and outer cylinder body, in described, between outer cylinder body, form and vacuumize sandwich, on the outer wall of described outer cylinder body, be fixedly connected with vacuumizing joint, described vacuumizing joint with in, sandwich between urceolus is communicated with, described immersed pump is arranged in the body of described pump pond, and both deads in line, described pump pond body horizontal cross is placed, this body exit, pump pond is connected with pump Chi Gai by pump pond body flange seal, lid inner side, described pump pond is fixedly connected with liquid discharge device, the drain pipe interface of described liquid discharge device passes pump Chi Gai and is communicated with the liquid outlet of immersed pump, in the interlayer body of described pump pond, the sleeve of liquid discharge device and pump discharge flange and pump pond cover and are equipped with at least reflective heat insulation layer of one deck, described liquid discharge device comprises drain pipe interface, pump discharge flange and sleeve, described immersed pump is fixed on pump discharge flange by securing member, described pump discharge flange is fixedly connected with pump Chi Gai by sleeve, this pump discharge flange is connected with inner barrel by adpting flange, described adpting flange is connected by connecting cylinder with pump pond body flange, between described connecting cylinder and sleeve, form vacuum interlayer structure, described pump discharge flange is connected with adpting flange socket joint.
2. the horizontal LNG immersed pump of vacuum according to claim 1 pond, is characterized in that: described drain pipe interface adopts high-vacuum insulation pipe to make.
3. the horizontal LNG immersed pump of vacuum according to claim 1 pond, it is characterized in that: feeding device comprises gas phase feed tube interface and liquid phase feed tube interface, described gas phase feed tube interface and liquid phase feed tube interface are all fixed on the outer wall of outer cylinder body, and extend to the sidewall of inner barrel and be communicated with the inlet in described immersed pump pond.
4. the horizontal LNG immersed pump of vacuum according to claim 3 pond, is characterized in that: described gas phase feed tube and liquid phase feed liquor interface all adopt high-vacuum insulation pipe to make, and on described gas phase feed tube interface, offers temperature transmitter interface.
5. the horizontal LNG immersed pump of vacuum according to claim 1 pond, it is characterized in that: between described inside and outside cylindrical shell, be uniformly distributed with 4 along the circumference for supporting the supporting construction of inside and outside cylindrical shell, described supporting construction is made up of stainless steel sleeve pipe and expoxy glass rod, described stainless steel sleeve pipe is fixed on inner barrel outer surface, described expoxy glass rod one end is sleeved in stainless steel sleeve pipe, and the other end contacts with outer cylinder body inner surface.
6. the horizontal LNG immersed pump of vacuum according to claim 1 pond, is characterized in that: described reflective heat insulation layer adopts aluminium foil and heat-insulating fiber paper interval to be entwined.
7. the horizontal LNG immersed pump of vacuum according to claim 1 pond, it is characterized in that: on the outer wall of described inner barrel, be fixedly connected with blow-down pipe interface, described blow-down pipe interface runs through outer cylinder body and is communicated with inner barrel inner chamber, on described inner barrel outer wall, is also provided with adsorbent of molecular sieve and palladium oxide.
8. the horizontal LNG immersed pump of vacuum according to claim 1 pond, is characterized in that: described securing member is adjustment screw thimble assembly.
9. according to the horizontal LNG immersed pump of the vacuum pond described in claim 1 to 8 any one, it is characterized in that: on the outer surface of described pump Chi Gai, be also fixedly connected with blow-off pipe interface and pump pond lid LNG leakage relief valve connection, described blow-off pipe interface runs through pump Chi Gai and pump discharge flange and is communicated with inner barrel inner chamber, and described pump pond lid LNG reveals relief valve connection and is communicated with through pump Chi Gai and with the sandwich sleeve and connecting cylinder.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310693892.3A CN103711720B (en) | 2013-12-18 | 2013-12-18 | The horizontal LNG immersed pump of vacuum pond |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310693892.3A CN103711720B (en) | 2013-12-18 | 2013-12-18 | The horizontal LNG immersed pump of vacuum pond |
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| Publication Number | Publication Date |
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| CN103711720A CN103711720A (en) | 2014-04-09 |
| CN103711720B true CN103711720B (en) | 2016-05-11 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201310693892.3A Expired - Fee Related CN103711720B (en) | 2013-12-18 | 2013-12-18 | The horizontal LNG immersed pump of vacuum pond |
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Families Citing this family (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105298824A (en) * | 2014-06-27 | 2016-02-03 | 安瑞科(廊坊)能源装备集成有限公司 | Liquefied natural gas (LNG) immersed pump system |
| CN104564711B (en) * | 2015-01-19 | 2016-08-24 | 江苏省特种设备安全监督检验研究院无锡分院 | Liquefied natural gas conveying latent liquid type double go out magnetic force driving pump |
| CN104895800B (en) * | 2015-05-19 | 2017-11-17 | 淄博博山绿源燃气设备有限公司 | Multistage immersed pump system |
| JP6823432B2 (en) * | 2016-11-18 | 2021-02-03 | 川崎重工業株式会社 | Insulated container for cryogenic gas pump |
| JP6855219B2 (en) | 2016-11-18 | 2021-04-07 | 川崎重工業株式会社 | Insulated container for cryogenic gas pump |
| CN108716469A (en) * | 2018-06-25 | 2018-10-30 | 杭州新亚低温科技有限公司 | A kind of micro- hot centrifugal pump of leakage of high speed suitable for ultralow temperature |
| CN109210004B (en) * | 2018-08-24 | 2020-08-25 | 武汉船用机械有限责任公司 | Pump pool of immersed pump |
| CN110056540B (en) * | 2019-04-29 | 2024-01-26 | 厚普清洁能源(集团)股份有限公司 | Horizontal immersed pump device |
| CN112983826A (en) * | 2021-03-01 | 2021-06-18 | 李博志 | Middle-high pressure screw compressor |
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| CN101131158A (en) * | 2007-03-28 | 2008-02-27 | 林寿贵 | Natural gas liquid charging-up pump and natural gas liquid charging-up station |
| CN201358922Y (en) * | 2008-12-25 | 2009-12-09 | 上海交通大学 | Submerged cryogenic pump for transferring liquefied natural gas |
| CN203796601U (en) * | 2013-12-18 | 2014-08-27 | 河南开元气体装备有限公司 | Full vacuum horizontal LNG immersed pump sump |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002250294A (en) * | 2001-02-21 | 2002-09-06 | Nikkiso Co Ltd | Centrifugal pump |
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2013
- 2013-12-18 CN CN201310693892.3A patent/CN103711720B/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101131158A (en) * | 2007-03-28 | 2008-02-27 | 林寿贵 | Natural gas liquid charging-up pump and natural gas liquid charging-up station |
| CN201358922Y (en) * | 2008-12-25 | 2009-12-09 | 上海交通大学 | Submerged cryogenic pump for transferring liquefied natural gas |
| CN203796601U (en) * | 2013-12-18 | 2014-08-27 | 河南开元气体装备有限公司 | Full vacuum horizontal LNG immersed pump sump |
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