CN203532277U - Low-temperature vertical type multistage high-pressure immersed pump - Google Patents

Low-temperature vertical type multistage high-pressure immersed pump Download PDF

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Publication number
CN203532277U
CN203532277U CN201320748683.XU CN201320748683U CN203532277U CN 203532277 U CN203532277 U CN 203532277U CN 201320748683 U CN201320748683 U CN 201320748683U CN 203532277 U CN203532277 U CN 203532277U
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China
Prior art keywords
pump
low
temperature
pump shaft
balance
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Active
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CN201320748683.XU
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Chinese (zh)
Inventor
程世福
颜秉全
万学丽
李雷
张德振
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Dalian Deep Blue Pump Co Ltd
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Dalian Deep Blue Pump Co Ltd
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Abstract

The utility model relates to a low-temperature vertical type multistage high-pressure immersed pump which comprises an inductive wheel arranged at the pump shaft end, a barrel, an immersed motor, an inner casing, a pump rotor component, a low-temperature bearing, a top plate and a sealing connector, wherein the immersed motor located at the upper end of the barrel is coaxial with a pump shaft; one end of a cable penetrating through the top plate is connected with the immersed motor, and the other end is connected with the sealing connector; one end of an equalizing pipe is communicated with a through hole in the upper part of the outer wall of a motor housing, and the other end is communicated with space of the outer wall of an inner casing at the bottom of a pump body; a balance disc is nested between the low-temperature bearing and a regulating impeller along the pump shaft, and a balance hub is arranged on the outer wall of a boss of the regulating impeller; and a temperature sensor is arranged on the outer wall of the barrel. The low-temperature vertical type multistage high-pressure immersed pump has the characteristics of simple structure, safe and stable operation and reliable sealing performance, and safety production requirements in a low-temperature work environment can be met.

Description

The multistage high pressure immersed pump of low temperature vertical
technical fieldthe utility model 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 purpose of this utility model is to provide the multistage high pressure immersed pump of low temperature vertical that can be safe and reliable, easy to maintenance under a kind of, high pressure entry environment large at flow.
For achieving the above object, the multistage high pressure immersed pump of the utility model low temperature vertical 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 further improvement of the utility model, described SEALING FITTING adopts 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.
The utility model has the advantages that: 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 the utility model low temperature vertical.
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 the utility model low temperature vertical 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 utlity model has the features such as simple in structure, safe and stable operation, sealing be reliable, under low-temperature working environment, can meet the requirement of safety in production.

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.
CN201320748683.XU 2013-11-25 2013-11-25 Low-temperature vertical type multistage high-pressure immersed pump Active CN203532277U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201320748683.XU CN203532277U (en) 2013-11-25 2013-11-25 Low-temperature vertical type multistage high-pressure immersed pump

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201320748683.XU CN203532277U (en) 2013-11-25 2013-11-25 Low-temperature vertical type multistage high-pressure immersed pump

Publications (1)

Publication Number Publication Date
CN203532277U true CN203532277U (en) 2014-04-09

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Family Applications (1)

Application Number Title Priority Date Filing Date
CN201320748683.XU Active CN203532277U (en) 2013-11-25 2013-11-25 Low-temperature vertical type multistage high-pressure immersed pump

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103603812A (en) * 2013-11-25 2014-02-26 大连深蓝泵业有限公司 Low-temperature vertical multi-stage high-pressure submerged pump
CN104913878A (en) * 2015-06-04 2015-09-16 广东石油化工学院 Rotating equipment dynamic balancing device
CN105257556A (en) * 2015-09-09 2016-01-20 江苏德邦工程有限公司 Low temperature immersed pump system feeding liquefied natural gas (LNG)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103603812A (en) * 2013-11-25 2014-02-26 大连深蓝泵业有限公司 Low-temperature vertical multi-stage high-pressure submerged pump
CN104913878A (en) * 2015-06-04 2015-09-16 广东石油化工学院 Rotating equipment dynamic balancing device
CN105257556A (en) * 2015-09-09 2016-01-20 江苏德邦工程有限公司 Low temperature immersed pump system feeding liquefied natural gas (LNG)

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