CN205136045U - Vertical multistage vacuum low temperature immersed pump - Google Patents
Vertical multistage vacuum low temperature immersed pump Download PDFInfo
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- CN205136045U CN205136045U CN201520788241.7U CN201520788241U CN205136045U CN 205136045 U CN205136045 U CN 205136045U CN 201520788241 U CN201520788241 U CN 201520788241U CN 205136045 U CN205136045 U CN 205136045U
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Abstract
The utility model provides a vertical multistage vacuum low temperature immersed pump, main, by motor section, pump head part, rotor shaft, bearing frame, wear the pole, the pump pond is constituteed, the bearing frame passes through the bearing and supports the rotor shaft, and motor section is equipped with to the upper end of rotor shaft, the lower extreme is equipped with the pump head part, and the connection is in a whole arranges confined pump pond in with the pump head part with motor section to wear the pole. This pump motor adopts superconducting motor, and the motor does not generate heat, do not influence LNG the gasification and to the lubrication of bearing, the electromagnetism characteristic does not receive temperature, does not produce magnetoelectric fluid annulus way, the motor has set up displacement sensor, but real time monitoring is carried out to the unsteady volume of antitrochanter. The bushing bearing seat can be changed as the vulnerable part at any time, and is workable, and reducible maintenance reduces the running cost. The optimum matching that the chopped -off head axle sleeve can reach inducer and impeller is set up between inducer and impeller, the lift and the efficiency of pump package can be improved. This pump is rational in infrastructure, and performance is high, and the low price is the interior immersed pump of low temperature jar of ideal.
Description
One, technical field
The utility model relates to a kind of centrifugal pumping apparatus of technical field of LNG application, is especially applicable to the vertical multi-stage vacuum and low temperature immersed pump of transporting low temperature medium.
Two, background technique
LNG is the abbreviation of LNG Liquefied natural gas (liquefiednaturalgas).Main component is methane.Colourless, tasteless, the nontoxic and non-corrosiveness of LNG.Development LNG Liquefied natural gas (LNG) industry, becomes adjustment Energy Mix, alleviates major action to the dependence of oil supply and pressure, guarantee Chinese energy safety.In the whole industrial chain of LNG, the links such as its output, transhipment, reception, utilization all will use low temperature immersed pump, and this makes LNG low temperature transport pump in industrial chain, plays very important role.LNG pump pond immersed pump be a kind of by Pump and Electromotor integral installation in sealed vacuum heat-resistant metal container, can zero leakage be accomplished, avoid producing explosive atmosphere, eliminate the transportation of liquefied natural gas of ignition condition and the core drive output unit of associated low temperature liquid.Because fed sheet of a media has the characteristic of low temperature, inflammable, explosive and easy vaporization, operating conditions is severe.Therefore the pumping unit of this type of medium of conveying is required to have the advantages that sealing is reliable, operation fluid loss is little and structural safety is reliable and stable.So this kind of pump design difficulty large, manufacture and test difficulty, therefore at present, in domestic this kind of cryogenic tank, immersed pump all relies on import, causes occurring the problems such as valuable product, operating cost are high.
Three, summary of the invention
In order to overcome the deficiency of above-mentioned technology, the purpose of this utility model provides a kind of usability high, low-cost vertical multi-stage vacuum and low temperature immersed pump.
The technological scheme realizing the purpose of this utility model employing is: this vertical multi-stage vacuum and low temperature immersed pump is primarily of motor part, pump head part, rotor shaft, bearing support, bar, pump pond composition; Bearing support is by bearings rotor shaft, and motor part is equipped with in the upper end of rotor shaft, pump head part is equipped with in lower end, and motor part is connected as a whole being placed in closed pump pond by bar with pump head part.
Described motor section is divided and is comprised electric machine assembly, rotor shaft, motor casing, motor upper cover, displacement motor sensor, end ring, butterfly spring, upper cover, lower cover; Motor casing is built with electric machine assembly, motor upper cover is equipped with in the upper end of motor casing, bushing bearing seat is connected with in motor upper cover, bearings in bearing support has rotor shaft, on the rotor shaft of bearing upper end, cover has end ring and butterfly spring, displacement motor sensor is equipped with in rotor shaft upper end portion, and motor top cap is connected to upper cover; The lower end of motor casing is connected with lower cover, and lower cover is built with support rotor bearing housing; Described motor is superconducting motor.
Described pump head part is formed primarily of rotor shaft, stator, impeller, inducer, Spit Section, stage casing, suction casing; Described lower cover lower end rotor shaft is connected with final stage lining, final stage axial stator, casing ring, impeller ring, impeller, middle axle sleeve, interstage bushing, axial stator, first stage impeller, chopped-off head axle sleeve, inducer and axis head nut in turn; Axial stator is fixed on interstage bushing by bolt, and taper chopped-off head axle sleeve is between inducer and first stage impeller; Spit Section, stage casing, suction casing is connected with outside the impeller being positioned at lower cover lower end.
Be provided with outside described motor casing that bottom communicates with Spit Section inner chamber, top communicates liquid-discharging tube with upper cover cavity, the chamber exit of upper cover is the discharge opening of pump.
Motor upper cover, lower cover, suction casing, stage casing, Spit Section are fixed together by described bar.
Cable and signal wire interface and gas exhaust piping the cover plate in described pump pond be equipped with.
The beneficial effects of the utility model are: owing to adopting superconducting motor: motor does not generate heat, and does not affect the gasification of LNG and the lubrication to bearing; Electromagnetic property is temperature influence not, and detent torque not temperature influence can directly start, and starting time is short, without the need to executing because starting another arranging; Do not produce magnetic current loop.Motor is provided with displacement transducer simultaneously, can monitor in real time the amount of floating of rotor.Owing to adopting bushing bearing stand structure can change at any time as easily damaged parts, easily damaged parts is easily processed, and can reduce maintenance period, reduces operating cost.The optimum Match that chopped-off head axle sleeve can reach inducer and impeller is set between inducer and impeller, because inducer blade can produce tail in liquid stream, and when this tail drops on centrifugal wheel inlet vane, structure lift and the efficiency of centrifugal wheel can be affected, so can improve lift and the efficiency of pump group.Under extra-high or low discharge, produce uneven operating mode in spiral case inside, thus form radial force, the imbalance of radial force can shorten bearing life, and axial stator is corresponding with liquid stream, under normal operation range, hydraulic pressure symmetry is very perfect, pump is in operation and does not produce by radial force.In a word, this pump structure is reasonable, and usability is high, low price, is immersed pump in a kind of comparatively ideal cryogenic tank.
Four, accompanying drawing explanation
Fig. 1 is the sectional structure chart of the utility model vertical multi-stage vacuum and low temperature immersed pump.
In figure: 1. interstage bushing, 2. impeller, 3. casing ring, 4. lower cover, 5. final stage lining, 6. liquid-discharging tube, 7. rotor shaft, 8. end ring, 9. butterfly spring, 10. cable interface 11. gas exhaust piping, 12. pump ponds, 13. displacement motor sensors, 14. upper covers, 15. motor upper covers, 16. rods, 17. electric machine assemblies, 18. motor casings, 19. bearing supports, the axial stator of 20. final stages, 21. impeller rings, 22. Spit Sections, 23. middle axle sleeves, 24. axial stators, 25. first stage impellers, 26. chopped-off head axle sleeves, 27. inducers, 28. suction casings, 29 axis head nuts, 30. stage casings.
Five, embodiment
In the accompanying drawings, the utility model vertical multi-stage vacuum and low temperature immersed pump, primarily of motor part, pump head part, rotor shaft, bearing support, bar, pump pond composition; Bearing support 19 is by bearings rotor shaft 7, and motor part is equipped with in the upper end of rotor shaft 7, pump head part is equipped with in lower end, and motor part is connected as a whole being placed in closed pump pond 12 by bar 16 with pump head part.
Described motor section is divided and is comprised electric machine assembly 17, rotor shaft 7, motor casing 18, motor upper cover 15, displacement motor sensor 13, end ring 8, butterfly spring 9, upper cover 14, lower cover 4; Motor casing 18 is built with electric machine assembly 17, motor upper cover 15 is equipped with in the upper end of motor casing 18, bushing bearing seat 19 is connected with in motor upper cover 15, bearings in bearing support 19 has rotor shaft 7, bearing support 19 and bearing are provided with end ring 8 and butterfly spring 9, and end ring 8 and butterfly spring 9 can realize the buffering of dynamical reaction and the balanced compensated of axial force.Displacement motor sensor 13 is equipped with in rotor shaft 7 upper end portion, can monitor in real time, realize electric motor protecting to the amount of floating of rotor.Motor upper cover 15 is connected with upper cover 14; The lower end of motor casing 18 is connected with lower cover 4, and lower cover 4 is built with support rotor axle 7 bearing support 19; Described motor is superconducting motor, and the benefit adopting superconducting motor is that motor does not generate heat, and does not affect the gasification of LNG and the lubrication to bearing; Electromagnetic property is temperature influence not, and detent torque not temperature influence can directly start, and starting time is short, without the need to executing because starting another arranging; Do not produce magnetic current loop.
Described pump head part is formed primarily of rotor shaft, stator, impeller, inducer, Spit Section, stage casing, suction casing; The rotor shaft 7 being positioned at lower cover 4 lower end is connected with final stage lining 5, final stage axial stator 20, casing ring 3, impeller ring 21, impeller 2, middle axle sleeve 23, interstage bushing 1, axial stator 24, first stage impeller 25, chopped-off head axle sleeve 26, inducer 27 and axis head nut 29 in turn; Axial stator 24 is fixed on interstage bushing 1 by bolt, and taper chopped-off head axle sleeve 26 is between inducer 27 and first stage impeller 25; The return guide vane structure of axial stator 24 can current stabilization, can carry out pressure conversion, reduction of speed, water conservancy diversion and elimination rotational component; Chopped-off head axle sleeve 26 is set between inducer 27 and first stage impeller 25, reaches the optimum Match of inducer 27 and impeller chopped-off head 25.Spit Section 22, stage casing 30, suction casing 28 is connected with outside the impeller being positioned at lower cover 4 lower end.Suction casing 28 and axial stator 24 form first stage impeller 25 active chamber, and Spit Section 22 forms impeller 2 active chamber with the axial stator 20 of final stage.
Be provided with outside described motor casing 18 that bottom communicates with Spit Section 22 inner chamber, top communicates liquid-discharging tube 6 with upper cover 14 inner chamber, the chamber exit of upper cover 14 is the discharge opening of pump.Motor upper cover 14, lower cover 4, suction casing 28, stage casing 30, Spit Section 22 are fixed together by described bar 16.Cable and signal wire interface 10 and gas exhaust piping 11 cover plate in described pump pond 12 be equipped with.
LNG LNG Liquefied natural gas enters in pump pond from the population in pump pond 12, sucks under the effect of rotary blade from suction casing 28, through the stage casing 30 of pump, Spit Section 22, liquid-discharging tube 6, exports from motor upper cover 14 chamber exit.
Claims (6)
1. a vertical multi-stage vacuum and low temperature immersed pump, primarily of motor part, pump head part, rotor shaft, bearing support, bar, pump pond composition; It is characterized in that: described bearing support (19) is by bearing rotary support rotor axle (7), motor part is equipped with in the upper end of rotor shaft (7), pump head part is equipped with in lower end, and motor part is connected as a whole being placed in closed pump pond (12) by bar (16) with pump head part.
2. vertical multi-stage vacuum and low temperature immersed pump as claimed in claim 1, described motor section is divided and is comprised electric machine assembly (17), rotor shaft (7), motor casing (18), motor upper cover (15), displacement motor sensor (13), end ring (8), butterfly spring (9), upper cover (14), lower cover (4); Motor casing (18) is built with electric machine assembly (17), motor upper cover (15) is equipped with in the upper end of motor casing (18), bearing support (19) is connected with in motor upper cover (15), bearings in bearing support (19) has rotor shaft (7), and motor upper cover (15) is connected with upper cover (14); The lower end of motor casing (18) is connected with lower cover (4), and lower cover (4) is built with support rotor axle (7) bearing support (19); It is characterized in that: the bushing bearing seat (19) of described bearing support (19) for ease of changing, the upper cover in bearing upper end rotor shaft (7) has end ring (8) and butterfly spring (9), and displacement motor sensor (13) is equipped with in rotor shaft (7) upper end portion.
3. vertical multi-stage vacuum and low temperature immersed pump as claimed in claim 1, described pump head part is formed primarily of rotor shaft, stator, impeller, inducer, Spit Section, stage casing, suction casing; Described lower cover (4) lower end rotor shaft (7) is connected with final stage lining (5), the axial stator (20) of final stage, casing ring (3), impeller ring (21), impeller (2), middle axle sleeve (23), interstage bushing (1), axial stator (24), first stage impeller (25), chopped-off head axle sleeve (26), inducer (27) and axis head nut (29) in turn; Described lower cover (4) lower end impeller outer is connected with Spit Section (22), stage casing (30), suction casing (28); It is characterized in that: described axial stator (24) is fixed on interstage bushing (1) by bolt, and taper chopped-off head axle sleeve (26) is positioned between inducer (27) and first stage impeller (25).
4. vertical multi-stage vacuum and low temperature immersed pump as claimed in claim 1, it is characterized in that: described motor casing (18) outside is provided with that bottom communicates with Spit Section (22) inner chamber, top communicates liquid-discharging tube (6) with upper cover (14) inner chamber, and the chamber exit of upper cover (14) is the discharge opening of pump.
5. vertical multi-stage vacuum and low temperature immersed pump as claimed in claim 1, is characterized in that: motor upper cover (14), lower cover (4), suction casing (28), stage casing (30), Spit Section (22) are fixed together by described bar (16).
6. vertical multi-stage vacuum and low temperature immersed pump as claimed in claim 1, is characterized in that: the cover plate in described pump pond (12) is equipped with cable and signal wire interface (10) and gas exhaust piping (11).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520788241.7U CN205136045U (en) | 2015-09-29 | 2015-09-29 | Vertical multistage vacuum low temperature immersed pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520788241.7U CN205136045U (en) | 2015-09-29 | 2015-09-29 | Vertical multistage vacuum low temperature immersed pump |
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| Publication Number | Publication Date |
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| CN205136045U true CN205136045U (en) | 2016-04-06 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201520788241.7U Active CN205136045U (en) | 2015-09-29 | 2015-09-29 | Vertical multistage vacuum low temperature immersed pump |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107687425A (en) * | 2017-08-21 | 2018-02-13 | 王道红 | Vertical multi-stage vacuum and low temperature immersed pump |
| CN107701465A (en) * | 2017-10-20 | 2018-02-16 | 项达章 | Vertical vacuum low temperature immersed pump |
| CN107725393A (en) * | 2017-09-30 | 2018-02-23 | 武汉船用机械有限责任公司 | A kind of low temperature immersed pump |
| CN109219720A (en) * | 2017-05-05 | 2019-01-15 | 气体运输技术公司 | storage device for liquefied gas |
| CN109915387A (en) * | 2019-03-19 | 2019-06-21 | 苏州横海信息科技有限公司 | A kind of vertical no axle envelope LNG delivery pump |
| CN110107807A (en) * | 2019-04-11 | 2019-08-09 | 安瑞科(蚌埠)压缩机有限公司 | Cryogenic pump sump |
| CN112994525A (en) * | 2021-02-26 | 2021-06-18 | 河南理工大学 | Superconductive-permanent magnet mixed magnetic suspension low-temperature disc type immersed pump |
-
2015
- 2015-09-29 CN CN201520788241.7U patent/CN205136045U/en active Active
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109219720A (en) * | 2017-05-05 | 2019-01-15 | 气体运输技术公司 | storage device for liquefied gas |
| CN109219720B (en) * | 2017-05-05 | 2023-02-17 | 气体运输技术公司 | Storage device for liquefied gas |
| CN107687425A (en) * | 2017-08-21 | 2018-02-13 | 王道红 | Vertical multi-stage vacuum and low temperature immersed pump |
| CN107725393A (en) * | 2017-09-30 | 2018-02-23 | 武汉船用机械有限责任公司 | A kind of low temperature immersed pump |
| CN107701465A (en) * | 2017-10-20 | 2018-02-16 | 项达章 | Vertical vacuum low temperature immersed pump |
| CN109915387A (en) * | 2019-03-19 | 2019-06-21 | 苏州横海信息科技有限公司 | A kind of vertical no axle envelope LNG delivery pump |
| CN110107807A (en) * | 2019-04-11 | 2019-08-09 | 安瑞科(蚌埠)压缩机有限公司 | Cryogenic pump sump |
| CN112994525A (en) * | 2021-02-26 | 2021-06-18 | 河南理工大学 | Superconductive-permanent magnet mixed magnetic suspension low-temperature disc type immersed pump |
| CN112994525B (en) * | 2021-02-26 | 2022-04-08 | 河南理工大学 | Superconductive-permanent magnet mixed magnetic suspension low-temperature disc type immersed pump |
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Legal Events
| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20160602 Address after: 255400, Shandong, Zibo province Linzi District Wang Zhen left South Village North Patentee after: Shandong Changzhi Pump Co.,Ltd. Address before: 125001, 70, Zhenxing Avenue, pump industry park, Huludao, Liaoning Patentee before: LIAONING CHANGZHI PUMP Co.,Ltd. |
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| PP01 | Preservation of patent right | ||
| PP01 | Preservation of patent right |
Effective date of registration: 20190523 Granted publication date: 20160406 |
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| PD01 | Discharge of preservation of patent | ||
| PD01 | Discharge of preservation of patent |
Date of cancellation: 20220523 Granted publication date: 20160406 |
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| PP01 | Preservation of patent right | ||
| PP01 | Preservation of patent right |
Effective date of registration: 20220523 Granted publication date: 20160406 |