CN206352595U - A kind of heavily loaded LNG low temperature immersed pump - Google Patents
A kind of heavily loaded LNG low temperature immersed pump Download PDFInfo
- Publication number
- CN206352595U CN206352595U CN201621004156.8U CN201621004156U CN206352595U CN 206352595 U CN206352595 U CN 206352595U CN 201621004156 U CN201621004156 U CN 201621004156U CN 206352595 U CN206352595 U CN 206352595U
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- Prior art keywords
- motor
- pump
- low temperature
- sprue
- liquid stream
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Abstract
The utility model provides a kind of heavily loaded LNG low temperature immersed pump, it is related to mechanical engineering pump class technical field, provided with sprue and secondary runner, liquid stream is entered by pump screen, through inducer, impeller, stator, from side, symmetrical exhaust manifold goes out liquid axially upwards, form sprue, a liquid stream part is entered by liquid outlet from motor top drilling, motor is flowed into through upper bearing, then discharged from the perforate of motor case surrounding, form two subchannels, a liquid stream part flows through lower bearing through axial force balance mechanism and flows into motor, then discharged from the perforate of motor case surrounding, form another secondary runner.The heavily loaded LNG low temperature immersed pump that the utility model is provided, there is sprue and secondary runner, has ensured structural symmetry under low-temperature condition, has shunk uniform with expansion.
Description
Technical field
The utility model is related to mechanical engineering pump class technical field, and in particular to LNG low temperature immersed pumps.
Background technology
LNG immersed pumps are the machinery that a kind of pump and motor integral slip into transporting low temperature medium in low temperature LNG.Due to LNG's
Low temperature (when pressure store is 0.1MPa, saturation temperature is about -162 DEG C) and inflammable characteristic, delivery pump not only will can bear low
The characteristic of temperature, and motor lubrication in low temperature LNG and cooling, LNG gasification, rotor and the pump housing that may occur in the pump housing
Impeller shares balance sex chromosome mosaicism that same axis is brought etc., and the main feature of general pump is different from as LNG immersed pumps.Tradition
Pump can not typically bear the characteristic of low temperature, and balance is poor.
Utility model content
The problem of the utility model exists aiming at above-mentioned background technology and a kind of heavily loaded LNG low temperature for inventing are dived liquid
Pump, solves the problem of can not bearing low temperature and balanced differences.
The technical solution adopted in the utility model is：
A kind of heavily loaded LNG low temperature immersed pump, it is characterised in that：Provided with sprue and secondary runner, liquid stream is entered by pump screen
Enter, through inducer, impeller, stator, symmetrical exhaust manifold goes out liquid axially upwards from side, form sprue, a liquid stream part by
Liquid outlet enters from motor top drilling, and motor is flowed into through upper bearing, is then discharged from the perforate of motor case surrounding, forms one
Individual two subchannel, a liquid stream part flows through lower bearing through axial force balance mechanism and flows into motor, is then opened from motor case surrounding
Hole is discharged, and forms another secondary runner.
The beneficial effects of the utility model：
The heavily loaded LNG low temperature immersed pump that the utility model is provided, has sprue and secondary runner, sprue liquid stream is by pump
Entrance is through inducer, impeller, stator, from side, symmetrical exhaust manifold goes out liquid axially upwards, ensures symmetrical configuration under low-temperature condition
Property, shrink uniform with expansion, a secondary runner liquid stream part flows through upper bearing from motor top-portion apertures by liquid outlet and flows into motor,
Discharged after lubrication upper bearing (metal) and motor from motor case surrounding hole, a part flows through lower bearing stream by axial force balance mechanism
Enter after motor, cooling and lubricating lower bearing and motor from the discharge of motor case surrounding hole.
Brief description of the drawings
Accompanying drawing is structural representation of the present utility model.
Wherein, 1. filter screen, 2. inducers, 3. first stage impellers, 4. axial stators, 5. impellers, 6. axial force balance machines
Structure, 7. final stage stators, 8. discharging tubes, 9. axles, 10. casings are covered on 11., 12. upper bearing (metal)s, 13. motor stators, and 14. motors turn
Son, 15. lower bearings, a. sprues, bis- runners of b., bis- runners of c.
Embodiment
As illustrated, a kind of heavily loaded LNG low temperature immersed pump, is designed with sprue and secondary runner, sprue discharging tube is adopted
Go out liquid with side symmetrical double-tube (low discharge pump) or symmetrical four pipe (high-capacity pump) go out liquid (value that do not transfinited by velocity in pipes is defined),
Remittance goes out liquid axially upwards, sprue liquid stream from pump intake through inducer, impeller, stator, from the symmetrical exhaust manifold in side axially to
On go out liquid, ensure structural symmetry under low-temperature condition, shrink uniform with expansion；Motor top cover and motor case surrounding are opened
Hole, forms secondary runner, and a secondary runner liquid stream part flows through upper bearing from motor top-portion apertures by liquid outlet and flows into motor, profit
From the discharge of motor case surrounding hole after sliding cooling upper bearing (metal) and motor, a part flows through lower bearing by axial force balance mechanism and flowed into
Discharged after motor, cooling and lubricating lower bearing and motor from motor case surrounding hole.
Claims (1)
1. a kind of heavily loaded LNG low temperature immersed pump, it is characterised in that：Provided with sprue and secondary runner, liquid stream is entered by pump screen,
Through inducer, impeller, stator, from side, symmetrical exhaust manifold goes out liquid axially upwards, forms sprue, a liquid stream part is by going out liquid
Mouth enters from motor top drilling, and motor is flowed into through upper bearing, is then discharged from the perforate of motor case surrounding, forms one two
Subchannel, a liquid stream part flows through lower bearing through axial force balance mechanism and flows into motor, is then arranged from the perforate of motor case surrounding
Go out, form another secondary runner.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621004156.8U CN206352595U (en) | 2016-08-29 | 2016-08-29 | A kind of heavily loaded LNG low temperature immersed pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621004156.8U CN206352595U (en) | 2016-08-29 | 2016-08-29 | A kind of heavily loaded LNG low temperature immersed pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206352595U true CN206352595U (en) | 2017-07-25 |
Family
ID=59346757
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201621004156.8U Active CN206352595U (en) | 2016-08-29 | 2016-08-29 | A kind of heavily loaded LNG low temperature immersed pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206352595U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| CN109026722A (en) * | 2018-08-13 | 2018-12-18 | 苏州横海信息科技有限公司 | A kind of LNG immersed pump |
-
2016
- 2016-08-29 CN CN201621004156.8U patent/CN206352595U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| CN109026722A (en) * | 2018-08-13 | 2018-12-18 | 苏州横海信息科技有限公司 | A kind of LNG immersed pump |
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| Date | Code | Title | Description |
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| PP01 | Preservation of patent right |
Effective date of registration: 20190523 Granted publication date: 20170725 |
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| PP01 | Preservation of patent right | ||
| PD01 | Discharge of preservation of patent |
Date of cancellation: 20220523 Granted publication date: 20170725 |
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| PD01 | Discharge of preservation of patent | ||
| PP01 | Preservation of patent right |
Effective date of registration: 20220523 Granted publication date: 20170725 |
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| PP01 | Preservation of patent right |