CN103603812A - Low-temperature vertical multi-stage high-pressure submerged pump - Google Patents
Low-temperature vertical multi-stage high-pressure submerged pump Download PDFInfo
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- CN103603812A CN103603812A CN201310600415.8A CN201310600415A CN103603812A CN 103603812 A CN103603812 A CN 103603812A CN 201310600415 A CN201310600415 A CN 201310600415A CN 103603812 A CN103603812 A CN 103603812A
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Abstract
The invention relates to a low-temperature vertical multi-stage high-pressure submerged pump comprising an inducer at the end of a pump shaft, a tubular jacket, a submerged motor, an inner shell, a pump inner rotor part, a low-temperature bearing, a top plate, and a seal joint. The submerged motor at the upper end of the tubular jacket and the pump shaft are coaxial. One end of a cable penetrating the top plate is connected with the submerged motor, and the other end of the cable is connected with the seal joint. One end of a balance tube is communicated with a through hole in the upper portion of the outer wall of a motor shell, and the other end of the balance tube is communicated with outer wall space of the bottom inner shell of a pump body. A balance disc is connected between the low-temperature bearing and an adjusting impeller along the pump shaft in a sleeving manner. A balance hub is disposed on the outer wall of a projection of the adjusting impeller. The outer wall of the tubular jacket is provided with a temperature sensor. The low-temperature vertical multi-stage high-pressure submerged pump has the advantages of simple structure, operational safety and stability and reliable airtightness, and meets the requirement for safe production in the low-temperature operating environment.
Description
technical fieldthe present invention relates to a kind of pumping unit, especially a kind of multistage high pressure immersed pump of low temperature vertical that is applicable to transporting low temperature medium.
background techniqueat present, LNG receiving station, LNG liquefaction factory, LNG floating in gasification installation and chemical plant installationss such as alkanes, hydro carbons need the fed sheet of a media supercharging in low temperature to use high-pressure service pump again, because medium has the characteristic of low temperature, inflammable, explosive and easy vaporization, need have that sealing is reliable, operation fluid loss is little and structural safety is stable uses the technical requirementss such as reliable to the high-pressure service pump equipment requirement of this working environment.
summary of the inventionthe object of this invention is to provide can be safe and reliable, easy to maintenance under a kind of, high pressure entry environment large at flow the multistage high pressure immersed pump of low temperature vertical.
For achieving the above object, the multistage high pressure immersed pump of low temperature vertical of the present invention is comprised of inducer, cylinder bag, the liquid motor of diving, inner housing, pump inner rotor part, cryogenic bearing, top board, the SEALING FITTING of pump shaft front end, the latent liquid motor and the pump shaft that are wherein positioned at cylinder bag upper end are coaxial, cable one end of running through top board is connected with latent liquid motor, and the other end is connected with SEALING FITTING; Balance tube one end is communicated with the through hole on electric machine casing outer wall top, the other end is communicated with inner housing outer wall space, pump housing bottom, and between cryogenic bearing and adjusting impeller, along pump shaft socket Balance disc, balance hub is arranged on and regulates impeller outer wall of boss; At cylinder bag outer wall, be provided with temperature transducer.
Adopt after said structure, due to adopt the liquid motor of diving with pump shaft coaxial and latent liquid type structure, reduced the fault and the requirement of explosion proof that due to pump and coupling misalignment, cause, while cryogenic media can be cooling to latent liquid motor, security and stability is higher.In pump, adopt SEALING FITTING and stationary seal structure, can prevent the leakage of medium along cable to environment in pump, realize medium zero leakage, improve safe and reliable operation.The cooling circuit that balance tube forms, the heat producing between stator and rotor in the time of can guaranteeing motor rotation is taken away in time, and cooling effect is better.Balance disc and balance hub axially arrange, and realize dynamically adjusting and eliminate axial force.Temperature transducer can testing pump in medium temperature, guarantee that in pump, part moves in liquid phase medium.
As a further improvement on the present invention, described SEALING FITTING adopt that metal is affixed with pottery, the gas sealing structure of metal and glass-encapsulated.Not only realized electric power transfer and prevented again the leakage of the inflammable and explosive medium of pumping along cable to junction box, good sealing effect, improves the safety and reliability of operation.
Advantage of the present invention is: simple in structure, safe and stable operation, the reliable feature of sealing can meet the requirement of safety in production under low-temperature working environment.
accompanying drawing explanationthe overall structure schematic diagram of the multistage high pressure immersed pump of Fig. 1 low temperature vertical of the present invention.
Fig. 2 is axial thrust balancing devices structure for amplifying schematic diagram as shown in Figure 1.
embodimentbelow in conjunction with accompanying drawing, the present invention is described in further detail:
As shown in Figure 1, the multistage high pressure immersed pump of low temperature vertical of the present invention is comprised of inducer 1, cylinder bag 2, the liquid motor 6 of diving, inner housing 4, pump inner rotor part 3, cryogenic bearing 5, top board 7, the SEALING FITTING 8 of pump shaft front end, the latent liquid motor and the pump shaft 10 that are wherein positioned at cylinder bag upper end are coaxial, cable 11 one end of running through top board are connected with latent liquid motor, and the other end is connected with SEALING FITTING; Balance tube 9 one end are communicated with the through hole on electric machine casing outer wall top, the other end is communicated with inner housing outer wall space, pump housing bottom.Between cryogenic bearing and adjusting impeller 12, along pump shaft socket Balance disc 14, balance hub 13 is socketed in and regulates impeller outer wall of boss (as Fig. 2 shows).At cylinder bag outer wall, temperature transducer 15 is installed.Metal is affixed with pottery in order to adopt for SEALING FITTING, the gas sealing structure of metal and glass-encapsulated.
In actual use, due to the liquid motor of adopt diving with pump shaft coaxial and latent liquid type structure, reduced the fault and the requirement of explosion proof that due to pump and coupling misalignment, cause, while cryogenic media can be cooling to latent liquid motor, security and stability is higher.In pump, adopt SEALING FITTING and stationary seal structure, can prevent the leakage of medium along cable to environment in pump, realize medium zero leakage, improved safety reliability.The cooling circuit that balance tube forms, the heat producing between stator 6-1 and rotor 6-2 in the time of can guaranteeing motor operation is taken away in time, and cooling effect is better.Temperature transducer can testing pump in medium temperature, guarantee that in pump, part moves in liquid phase medium.When pump startup, owing to regulating the effect of impeller cover power, the whole upwards running of pump shaft, now the gap between Balance disc and impeller cover diminishes gradually, makes to regulate the counter balance pocket internal pressure between impeller and Balance disc to become large, cause the running downwards again of pump shaft integral body, make again Balance disc and regulate the gap between impeller cover to become gradually greatly, counter balance pocket pressure diminishes, and rotor is upwards running again, so repeatedly, realize axial force transient equiliblium.
The feature such as that the present invention has is simple in structure, safe and stable operation, sealing are reliable can meet the requirement of safety in production under low-temperature working environment.
Claims (2)
1. the multistage high pressure immersed pump of low temperature vertical, inducer, cylinder bag, the liquid motor of diving, inner housing, pump inner rotor part, cryogenic bearing, top board, SEALING FITTING by pump shaft end form, it is characterized in that: the latent liquid motor and the pump shaft that are positioned at cylinder bag upper end are coaxial, cable one end of running through top board is connected with latent liquid motor, and the other end is connected with SEALING FITTING; Balance tube one end is communicated with the through hole on electric machine casing outer wall top, the other end is communicated with inner housing outer wall space, pump housing bottom; Between cryogenic bearing and adjusting impeller, along pump shaft socket Balance disc, balance hub is arranged on and regulates impeller outer wall of boss; At cylinder bag outer wall, be provided with temperature transducer.
2. the multistage high pressure immersed pump of low temperature vertical according to claim 1, is characterized in that: described SEALING FITTING adopts that metal is affixed with pottery, the gas sealing structure of metal and glass-encapsulated.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310600415.8A CN103603812A (en) | 2013-11-25 | 2013-11-25 | Low-temperature vertical multi-stage high-pressure submerged pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310600415.8A CN103603812A (en) | 2013-11-25 | 2013-11-25 | Low-temperature vertical multi-stage high-pressure submerged pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103603812A true CN103603812A (en) | 2014-02-26 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310600415.8A Pending CN103603812A (en) | 2013-11-25 | 2013-11-25 | Low-temperature vertical multi-stage high-pressure submerged pump |
Country Status (1)
| Country | Link |
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| CN (1) | CN103603812A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105386984A (en) * | 2015-12-14 | 2016-03-09 | 大连深蓝泵业有限公司 | Vertical-type low-temperature immersed pump used for ship |
| CN105736401A (en) * | 2016-04-18 | 2016-07-06 | 大连深蓝泵业有限公司 | Axial force balance mechanism of electric ultralow-temperature immersed pump for marine working condition |
| CN105756957A (en) * | 2016-04-18 | 2016-07-13 | 大连深蓝泵业有限公司 | Shafting supporting structure of electrical ultra-low temperature immersed pump for ocean working condition |
| CN106207600A (en) * | 2016-08-29 | 2016-12-07 | 武汉船用机械有限责任公司 | A kind of ceramic seal electrical connector |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2192750Y (en) * | 1994-04-08 | 1995-03-22 | 谢士云 | D.C. submersible pump for ship |
| JP2002310087A (en) * | 2001-04-11 | 2002-10-23 | Ebara Corp | Submerged motor pump |
| CN202251069U (en) * | 2011-09-20 | 2012-05-30 | 大连深蓝泵业有限公司 | Vertical multi-stage barrel pump |
| CN203035567U (en) * | 2012-11-12 | 2013-07-03 | 陕西扶龙机电制造有限公司 | Inner-cooling downdraft multi-level submersible electric pump |
| CN203532277U (en) * | 2013-11-25 | 2014-04-09 | 大连深蓝泵业有限公司 | Low-temperature vertical type multistage high-pressure immersed pump |
-
2013
- 2013-11-25 CN CN201310600415.8A patent/CN103603812A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2192750Y (en) * | 1994-04-08 | 1995-03-22 | 谢士云 | D.C. submersible pump for ship |
| JP2002310087A (en) * | 2001-04-11 | 2002-10-23 | Ebara Corp | Submerged motor pump |
| CN202251069U (en) * | 2011-09-20 | 2012-05-30 | 大连深蓝泵业有限公司 | Vertical multi-stage barrel pump |
| CN203035567U (en) * | 2012-11-12 | 2013-07-03 | 陕西扶龙机电制造有限公司 | Inner-cooling downdraft multi-level submersible electric pump |
| CN203532277U (en) * | 2013-11-25 | 2014-04-09 | 大连深蓝泵业有限公司 | Low-temperature vertical type multistage high-pressure immersed pump |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105386984A (en) * | 2015-12-14 | 2016-03-09 | 大连深蓝泵业有限公司 | Vertical-type low-temperature immersed pump used for ship |
| CN105736401A (en) * | 2016-04-18 | 2016-07-06 | 大连深蓝泵业有限公司 | Axial force balance mechanism of electric ultralow-temperature immersed pump for marine working condition |
| CN105756957A (en) * | 2016-04-18 | 2016-07-13 | 大连深蓝泵业有限公司 | Shafting supporting structure of electrical ultra-low temperature immersed pump for ocean working condition |
| CN106207600A (en) * | 2016-08-29 | 2016-12-07 | 武汉船用机械有限责任公司 | A kind of ceramic seal electrical connector |
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Application publication date: 20140226 |