Two-end-supported-type three-stage centrifugal pump

Two-end-supported-type three-stage centrifugal pump

The utility model discloses a two-end-supported-type three-stage centrifugal pump which comprises a pump body part, a rotor part, a bearing part and a mechanical seal part. The rotor part comprises a first-stage impeller (11), a second-stage impeller (15) and a pump shaft (25), the first-stage impel...

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Hauptverfasser: SHEN SHUIQIN, CHI WU, NI XIUDONG, CHI QINGJIE, SUN SENSEN
Format: Patent
Sprache:eng
Schlagworte:
BLASTING
HEATING
LIGHTING
MECHANICAL ENGINEERING
NON-POSITIVE DISPLACEMENT PUMPS
POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS
PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
WEAPONS
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creator SHEN SHUIQIN
CHI WU
NI XIUDONG
CHI QINGJIE
SUN SENSEN
description The utility model discloses a two-end-supported-type three-stage centrifugal pump which comprises a pump body part, a rotor part, a bearing part and a mechanical seal part. The rotor part comprises a first-stage impeller (11), a second-stage impeller (15) and a pump shaft (25), the first-stage impeller is of a symmetrical double suction type structure, a third-stage impeller (17) with suction inlets facing the same direction is installed in a pump body (18) of the pump body part and at the side edge of the second-stage impeller (15), and the bearing part is divided into a left bearing device (6) and a right bearing device (22) which are installed at the two ends of the pump shaft of the rotor part respectively. Cooling water cavities (38) are formed in a left pump cover (9) of the mechanical seal part and a right pump cover (19) of the mechanical seal part. The two-end-supported-type three-stage centrifugal pump can meet the requirements of a bottom reduction oil pump which can process 3.5 million tons of inferior heavy oil per year, the pump efficiency and the anti-cavitation performance of the two-end-supported-type three-stage centrifugal pump can be greatly superior to those of an original bottom reduction oil pump, and the two-end-supported-type three-stage centrifugal pump will play an important roll in replacing a bottom reduction oil pump of an existing atmospheric and vacuum distillation unit and meeting the requirements of a novel device.
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The rotor part comprises a first-stage impeller (11), a second-stage impeller (15) and a pump shaft (25), the first-stage impeller is of a symmetrical double suction type structure, a third-stage impeller (17) with suction inlets facing the same direction is installed in a pump body (18) of the pump body part and at the side edge of the second-stage impeller (15), and the bearing part is divided into a left bearing device (6) and a right bearing device (22) which are installed at the two ends of the pump shaft of the rotor part respectively. Cooling water cavities (38) are formed in a left pump cover (9) of the mechanical seal part and a right pump cover (19) of the mechanical seal part. The two-end-supported-type three-stage centrifugal pump can meet the requirements of a bottom reduction oil pump which can process 3.5 million tons of inferior heavy oil per year, the pump efficiency and the anti-cavitation performance of the two-end-supported-type three-stage centrifugal pump can be greatly superior to those of an original bottom reduction oil pump, and the two-end-supported-type three-stage centrifugal pump will play an important roll in replacing a bottom reduction oil pump of an existing atmospheric and vacuum distillation unit and meeting the requirements of a novel device.</description><language>eng</language><subject>BLASTING ; HEATING ; LIGHTING ; MECHANICAL ENGINEERING ; NON-POSITIVE DISPLACEMENT PUMPS ; POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS ; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS ; WEAPONS</subject><creationdate>2015</creationdate><oa>free_for_read</oa><woscitedreferencessubscribed>false</woscitedreferencessubscribed></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktohtml>$$Uhttps://worldwide.espacenet.com/publicationDetails/biblio?FT=D&amp;date=20150114&amp;DB=EPODOC&amp;CC=CN&amp;NR=204099216U$$EHTML$$P50$$Gepo$$Hfree_for_read</linktohtml><link.rule.ids>230,308,776,881,25542,76289</link.rule.ids><linktorsrc>$$Uhttps://worldwide.espacenet.com/publicationDetails/biblio?FT=D&amp;date=20150114&amp;DB=EPODOC&amp;CC=CN&amp;NR=204099216U$$EView_record_in_European_Patent_Office$$FView_record_in_$$GEuropean_Patent_Office$$Hfree_for_read</linktorsrc></links><search><creatorcontrib>SHEN SHUIQIN</creatorcontrib><creatorcontrib>CHI WU</creatorcontrib><creatorcontrib>NI XIUDONG</creatorcontrib><creatorcontrib>CHI QINGJIE</creatorcontrib><creatorcontrib>SUN SENSEN</creatorcontrib><title>Two-end-supported-type three-stage centrifugal pump</title><description>The utility model discloses a two-end-supported-type three-stage centrifugal pump which comprises a pump body part, a rotor part, a bearing part and a mechanical seal part. 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subjects BLASTING
HEATING
LIGHTING
MECHANICAL ENGINEERING
NON-POSITIVE DISPLACEMENT PUMPS
POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS
PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
WEAPONS
title Two-end-supported-type three-stage centrifugal pump
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