WO2011123892A1 - Pompes à fluide et systèmes de surveillance pour pompes à fluide - Google Patents

Pompes à fluide et systèmes de surveillance pour pompes à fluide Download PDF

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Publication number
WO2011123892A1
WO2011123892A1 PCT/AU2011/000396 AU2011000396W WO2011123892A1 WO 2011123892 A1 WO2011123892 A1 WO 2011123892A1 AU 2011000396 W AU2011000396 W AU 2011000396W WO 2011123892 A1 WO2011123892 A1 WO 2011123892A1
Authority
WO
WIPO (PCT)
Prior art keywords
pump
temperature
temperature condition
pump according
fluid
Prior art date
Application number
PCT/AU2011/000396
Other languages
English (en)
Inventor
Andrew Philip John Collins
Original Assignee
Keto Ip Pty Ltd As Trustee For The Keto Ip Trust
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from AU2010901443A external-priority patent/AU2010901443A0/en
Application filed by Keto Ip Pty Ltd As Trustee For The Keto Ip Trust filed Critical Keto Ip Pty Ltd As Trustee For The Keto Ip Trust
Publication of WO2011123892A1 publication Critical patent/WO2011123892A1/fr

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D15/00—Control, e.g. regulation, of pumps, pumping installations or systems
    • F04D15/02—Stopping of pumps, or operating valves, on occurrence of unwanted conditions
    • F04D15/0209—Stopping of pumps, or operating valves, on occurrence of unwanted conditions responsive to a condition of the working fluid
    • F04D15/0218—Stopping of pumps, or operating valves, on occurrence of unwanted conditions responsive to a condition of the working fluid the condition being a liquid level or a lack of liquid supply
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D15/00—Control, e.g. regulation, of pumps, pumping installations or systems
    • F04D15/0077—Safety measures
    • F04D15/0083—Protection against sudden pressure change, e.g. check valves
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D29/00—Details, component parts, or accessories
    • F04D29/40—Casings; Connections of working fluid
    • F04D29/42—Casings; Connections of working fluid for radial or helico-centrifugal pumps
    • F04D29/426—Casings; Connections of working fluid for radial or helico-centrifugal pumps especially adapted for liquid pumps
    • F04D29/4286—Casings; Connections of working fluid for radial or helico-centrifugal pumps especially adapted for liquid pumps inside lining, e.g. rubber
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01K—MEASURING TEMPERATURE; MEASURING QUANTITY OF HEAT; THERMALLY-SENSITIVE ELEMENTS NOT OTHERWISE PROVIDED FOR
    • G01K13/00—Thermometers specially adapted for specific purposes
    • G01K13/04—Thermometers specially adapted for specific purposes for measuring temperature of moving solid bodies
    • G01K13/08—Thermometers specially adapted for specific purposes for measuring temperature of moving solid bodies in rotary movement

Definitions

  • This invention relates to fluid pumps and also monitoring systems for fluid pumps.
  • the invention has been devised particularly, although not necessarily solely, for centrifugal pumps.
  • Centrifugal pumps are often used to pump slurries along flow lines in slurry processing operations. If the slurry flow rate falls below its settling velocity, the solids settle in the flow line, causing a blockage. Operation of a centrifugal pump with a blocked suction line or a blocked discharge line is most undesirable. With such a blockage, slurry may cease to flow, or at least being adversely retarded in its flow, through the pump, resulting in a remnant volume of the slurry being confined within the pump. The impeller of the centrifugal pump, however, continues to rotate and so spins in the confined volume f slurry within the pump.
  • Variable speed drives are now commonly used to optimise the transfer of slurry, pumping it at just above the settling velocity, which is usually the most efficient way of transferring the solids: If a variable speed drive slows to a point where the pump no longer creates the fluid velocity to prevent the solids settling in the flow line, the risk of explosion is greatly increased.
  • a pump for processing a fluid comprising a body defining a suction inlet and a discharge outlet, and means responsive to a prescribed temperature condition associated with the pump.
  • the fluid comprises slurry.
  • the temperature condition is the temperature of the fluid being processed by the pump.
  • the temperature condition is the temperature of at least one component of the pump.
  • the temperature is the temperature of the fluid located within the pump between the suction inlet and the discharge outlet of the pump.
  • the pump comprises a pump casing.
  • the means responsive to a prescribed temperature condition are mounted on the pump casing.
  • the pump casing is adapted to receive a casing liner.
  • the casing liner is a replaceable casing liner.
  • the means responsive to a prescribed temperature condition are mounted on the pump casing liner.
  • the means responsive to a prescribed temperature condition is in heat exchange relation with the pump casing liner.
  • the means responsive to a prescribed temperature condition comprise a temperature sensor.
  • the temperature sensor comprises a temperature measuring device.
  • the temperature measuring device comprises a resistance temperature detector.
  • the temperature sensor is adapted to operate an indication system.
  • the indication system comprises an alarm.
  • the temperature sensor is adapted to interrupt operation of the pump.
  • the pump comprises a centrifugal pump.
  • the body comprises a pump casing defining a volute chamber and an impellor accommodated in the volute chamber.
  • the means responsive to a prescribed temperature condition are mounted on the volute chamber.
  • the pump further comprises a throat bush.
  • the means r sponsive to a prescribed temperature condition are mounted on the throat bush.
  • the prescribed temperature condition associated with the pump comprises an abnormal operating temperature for the pump.
  • the abnormal operating temperature for the pump comprises a temperature at which operation of the pump is approaching undesirable state.
  • the abnormal operating temperature for the pump is indicative of obstructed fluid flow.
  • a system for monitoring the operation of a pump which comprises a body having a suction inlet and a discharge outlet, the monitoring system comprising a means responsive to a prescribed temperature condition associated with the pump, said means being operable to initiate action in relation to operation of the pump.
  • the action comprises actuation of an indication system and/or interruption of the operation of the pump.
  • the indication system comprises an alarm.
  • the temperature condition associated with the pump is indicative of obstructed fluid flow through the pump.
  • a method of pumping a fluid comprising the steps of operating a pump to pump the fluid and monitoring the operation of the pump to detect a prescribed temperature condition associated with the pump.
  • the prescribed temperature condition associated with the pump comprises an abnormal operating temperature for the pump.
  • the abnormal operating temperature for the pump comprises a temperature at which operation of the pump is approaching undesirable state.
  • the abnormal operating temperature for the pump is indicative of obstructed fluid flow.
  • Figure 1 is a schematic side view of a pump according to the embodiment
  • Figure 2 is a fragmentary view, on an enlarged scale, of the pump
  • Figure 3 is a front view of a frame plate liner insert forming part of the pump.
  • Figure 4 is a cross-sectional view on line 4-4 of Figure 3. Best Mode(s) for Carrying Out the Invention
  • the embodiment shown in the drawings is directed to a centrifugal pump 10 intended particularly for applications involving slurries.
  • the centrifugal pump 10 comprises a pump body 1 1 defining a pump casing 13 incorporating a volute chamber 15, and a discharge outlet 17.
  • An impeller 19 is rotatably supported within the pump body 1 1.
  • a suction inlet 21 is provided in the pump body 1 through which the fluid can enter the impeller 19 along the rotating axis.
  • the centrifugal pump 10 operates in known manner, with the slurry entering the impeller 19 being accelerated by the rotating impeller and flowing radially outwardly into the volute chamber 15 from where it discharges through the outlet 17.
  • the pump casing 13 incorporates a pump casing liner 23 (also known as a frame plate insert) which can be removed and replaced when worn, as is well known for centrifugal pumps used in applications involving slurries.
  • the pump 10 is typically installed in a flow line for a slurry processing application, with the suction inlet 21 coupled to a suction line section of the flow line and the discharge outlet 17 coupled to a discharge line section of the flow line.
  • the centrifugal pump 10 incorporates a system 30 for monitoring the operation of the pump to detect, and initiate action, in relation to, an obstruction of flow through the pump, typically arising as a consequence of a blockage or other obstruction in the suction line or the discharge line.
  • an obstruction of flow through the pump typically arising as a consequence of a blockage or other obstruction in the suction line or the discharge line.
  • slurry can stagnate within the volute chamber 15 of the pump 10 and the temperature of the stagnant slurry increases as the rotating impeller 19 spins within the slurry.
  • the monitoring system 30 comprises a means 31 responsive a temperature condition associated with the pump.
  • Such means 31 comprises a temperature sensor 33.
  • the temperature sensor 33 comprises a temperature measuring device such as a resistance temperature detector.
  • the temperature sensor 33 may be operable to actuate, an indication system (not shown) such as an alarm if the temperature being monitored attained a prescribed temperature condition.
  • the temperature sensor 33 may also be operable to interrupt operation of the pump 10 upon attainment of the prescribed temperature condition or upon an increase in the temperature to a predetermined extent beyond the prescribed temperature condition.
  • the indication system would provide an indication of the presence of an obstruction without necessary interrupting operation of the pump, thereby identifying the need for some remedial action. If the problem is not remedied and the temperature continues to rise, the operation of the pump would be interrupted once the temperature has risen the predetermined extent beyond the prescribed temperature condition.
  • the temperature sensor 33 is installed in a boss 35 formed integrally in the frame plate insert 23.
  • the temperature sensor. 33 is connected to the remainder of the monitoring system 30 by terminal wire 37.
  • the temperature sensor 33 is not directly exposed to slurry within the pump 10 r but rather is exposed to heat generated within the slurry as a consequence of heat transfer from the slurry through the frame plate insert 23.
  • the centrifugal pump 10 operates in known manner to pump slurry along the flow line from the suction line section to the discharge line section. If the slurry flow rate falls below its settling velocity, solids can settle in the flow line, thereby causing a blockage.
  • the blockage can lead to the slurry ceasing to flow, or at least being adversely retarded in its flow, through the centrifugal pump 10. Notwithstanding the blockage, the impeller 19 continues to rotate and so spins in the confined slurry within the pump. This action, provided a "paddle wheel effect", generating heat within the confined slurry.
  • the monitoring system 30 detects if the temperature rises to a point where remedial action is required and initiates such action if necessary.
  • the present embodiment provides a simple yet highly effective arrangement for preventing operation of the centrifugal pump 10 in a potentially, dangerous condition occurring through an obstruction (such as a blockage) resulting in slurry ceasing to flow, or at least being adversely retarded in its flow, through the centrifugal pump.
  • the temperature sensor 33 is located on the frame plate insert 23 of the pump 10.
  • Other arrangements are, of course, possible.
  • the temperature of any pressure retaining component of the pump could be monitored; for instance, the temperature sensor could be mounted on the pump casing, the throat bush or within the volute chamber.
  • the invention is not necessarily limited to centrifugal pumps.
  • the invention may have application to other pumps where as potentially dangerous condition could arise through a blockage or other obstruction to the flow of fluid being pumped.
  • the invention is not limited to handling of slurries.
  • the invention may have application to the handling of any appropriate fluid, including liquids (such as water) having essentially no or little solids content.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Control Of Non-Positive-Displacement Pumps (AREA)
  • Control Of Positive-Displacement Pumps (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)

Abstract

L'invention porte sur une pompe (10) destinée à traiter un fluide, comprenant un corps (11) qui définit une entrée d'aspiration (21) et une sortie de refoulement (17), et des moyens (31) qui répondent à une condition de température prescrite associée à la pompe (10). L'invention porte aussi sur un système (30) destiné à surveiller le fonctionnement d'une pompe (10) qui comprend un corps (11) ayant une entrée d'aspiration (21) et une sortie de refoulement (17), le système de surveillance (30) comprenant des moyens (31) qui répondent à une condition de température associée à la pompe (10), lesdits moyens (31) étant actionnables pour déclencher une action en relation avec le fonctionnement de la pompe (10). L'invention porte également sur le procédé pour pomper un fluide comprend les étapes consistant à faire fonctionner une pompe (10) pour pomper le fluide et à surveiller le fonctionnement de la pompe (10) pour détecter une condition de température prescrite associée à la pompe (10) indicative d'un écoulement de fluide obstrué à travers la pompe.
PCT/AU2011/000396 2010-04-06 2011-04-06 Pompes à fluide et systèmes de surveillance pour pompes à fluide WO2011123892A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
AU2010901443 2010-04-06
AU2010901443A AU2010901443A0 (en) 2010-04-06 Fluid Pumps and Monitoring Systems for Fluid Pumps

Publications (1)

Publication Number Publication Date
WO2011123892A1 true WO2011123892A1 (fr) 2011-10-13

Family

ID=44761924

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/AU2011/000396 WO2011123892A1 (fr) 2010-04-06 2011-04-06 Pompes à fluide et systèmes de surveillance pour pompes à fluide

Country Status (2)

Country Link
AR (1) AR081279A1 (fr)
WO (1) WO2011123892A1 (fr)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102954039A (zh) * 2012-12-27 2013-03-06 宜兴市灵谷塑料设备有限公司 一种密封防裂碳化硅陶瓷内衬离心泵
WO2014088998A1 (fr) * 2012-12-03 2014-06-12 Itt Manufacturing Enterprises Llc Pompe ayant un système de décompression
CN104454555A (zh) * 2014-12-10 2015-03-25 江苏亚梅泵业集团有限公司 一种耐腐耐磨化工离心泵
CN112762011A (zh) * 2019-11-06 2021-05-07 中国石油化工股份有限公司 一种防爆离心通风机及其防爆方法

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3370542A (en) * 1965-10-21 1968-02-27 Dresser Ind Temperature detection device
EP0340696A2 (fr) * 1988-05-03 1989-11-08 Warman International Ltd. Sécurité de surcharge pour pompe centrifuge
US4984966A (en) * 1987-09-15 1991-01-15 Warman International Limited Method of making liner
EP1178212A2 (fr) * 2000-08-03 2002-02-06 Claber S.P.A. Pompe centrifugale refroidie par eau
US6435836B1 (en) * 1998-02-09 2002-08-20 Ebara Corporation Fluid machinery
US6527517B1 (en) * 1999-09-13 2003-03-04 Mannesmann Vdo Ag Pump
DE102004040899A1 (de) * 2004-08-24 2006-03-30 Schicketanz, Walter, Dr. Absicherung von Pumpen, insbesondere dichtungsloser Pumpen mittels Temperaturmessungen und Verarbeitung der daraus resultierenden Signale

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3370542A (en) * 1965-10-21 1968-02-27 Dresser Ind Temperature detection device
US4984966A (en) * 1987-09-15 1991-01-15 Warman International Limited Method of making liner
EP0340696A2 (fr) * 1988-05-03 1989-11-08 Warman International Ltd. Sécurité de surcharge pour pompe centrifuge
US6435836B1 (en) * 1998-02-09 2002-08-20 Ebara Corporation Fluid machinery
US6527517B1 (en) * 1999-09-13 2003-03-04 Mannesmann Vdo Ag Pump
EP1178212A2 (fr) * 2000-08-03 2002-02-06 Claber S.P.A. Pompe centrifugale refroidie par eau
DE102004040899A1 (de) * 2004-08-24 2006-03-30 Schicketanz, Walter, Dr. Absicherung von Pumpen, insbesondere dichtungsloser Pumpen mittels Temperaturmessungen und Verarbeitung der daraus resultierenden Signale

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2014088998A1 (fr) * 2012-12-03 2014-06-12 Itt Manufacturing Enterprises Llc Pompe ayant un système de décompression
CN104854348A (zh) * 2012-12-03 2015-08-19 Itt制造企业有限责任公司 具有泄压系统的泵
AU2013356279B2 (en) * 2012-12-03 2017-10-26 Itt Manufacturing Enterprises Llc Pump with pressure relief system
US9841027B2 (en) 2012-12-03 2017-12-12 Itt Manufacturing Enterprises Llc Pump pressure relief system
CN102954039A (zh) * 2012-12-27 2013-03-06 宜兴市灵谷塑料设备有限公司 一种密封防裂碳化硅陶瓷内衬离心泵
CN104454555A (zh) * 2014-12-10 2015-03-25 江苏亚梅泵业集团有限公司 一种耐腐耐磨化工离心泵
WO2016090949A1 (fr) * 2014-12-10 2016-06-16 江苏亚梅泵业集团有限公司 Pompe centrifuge chimique à grande résistance à l'usure et anti-corrosive
CN112762011A (zh) * 2019-11-06 2021-05-07 中国石油化工股份有限公司 一种防爆离心通风机及其防爆方法

Also Published As

Publication number Publication date
AR081279A1 (es) 2012-08-01

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