GB2471908A - Non-intrusive vapour detector for magnetic drive pump - Google Patents

Non-intrusive vapour detector for magnetic drive pump Download PDF

Info

Publication number
GB2471908A
GB2471908A GB0912515A GB0912515A GB2471908A GB 2471908 A GB2471908 A GB 2471908A GB 0912515 A GB0912515 A GB 0912515A GB 0912515 A GB0912515 A GB 0912515A GB 2471908 A GB2471908 A GB 2471908A
Authority
GB
United Kingdom
Prior art keywords
pump
magnet rotor
bubble detector
magnetic
detector
Prior art date
Legal status (The legal status 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 status listed.)
Granted
Application number
GB0912515A
Other versions
GB2471908B (en
GB0912515D0 (en
Inventor
David Clark
Phil Harper
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
HMD Seal Less Pumps Ltd
Original Assignee
HMD Seal Less Pumps Ltd
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
Application filed by HMD Seal Less Pumps Ltd filed Critical HMD Seal Less Pumps Ltd
Priority to GB0912515A priority Critical patent/GB2471908B/en
Publication of GB0912515D0 publication Critical patent/GB0912515D0/en
Priority to US12/582,127 priority patent/US20110014072A1/en
Priority to CL2010000550A priority patent/CL2010000550A1/en
Priority to ZA2010/03880A priority patent/ZA201003880B/en
Priority to CA2706266A priority patent/CA2706266C/en
Priority to JP2010132592A priority patent/JP2011021596A/en
Priority to CO10070798A priority patent/CO6280068A1/en
Priority to KR1020100062407A priority patent/KR20110007946A/en
Priority to CN2010102309793A priority patent/CN101956715B/en
Priority to DE102010026414.8A priority patent/DE102010026414B4/en
Priority to BRPI1016226-7A2A priority patent/BRPI1016226A2/en
Priority to RU2010129213/06A priority patent/RU2472038C2/en
Priority to ARP100102622A priority patent/AR078074A1/en
Publication of GB2471908A publication Critical patent/GB2471908A/en
Application granted granted Critical
Publication of GB2471908B publication Critical patent/GB2471908B/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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
    • F04D13/00—Pumping installations or systems
    • F04D13/02—Units comprising pumps and their driving means
    • F04D13/021—Units comprising pumps and their driving means containing a coupling
    • F04D13/024—Units comprising pumps and their driving means containing a coupling a magnetic coupling
    • 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
    • F04D15/0088—Testing machines
    • 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
    • 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
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N29/00—Investigating or analysing materials by the use of ultrasonic, sonic or infrasonic waves; Visualisation of the interior of objects by transmitting ultrasonic or sonic waves through the object
    • G01N29/02—Analysing fluids
    • G01N29/032—Analysing fluids by measuring attenuation of acoustic waves
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N2291/00—Indexing codes associated with group G01N29/00
    • G01N2291/02—Indexing codes associated with the analysed material
    • G01N2291/024—Mixtures
    • G01N2291/02433—Gases in liquids, e.g. bubbles, foams

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Chemical & Material Sciences (AREA)
  • Analytical Chemistry (AREA)
  • Biochemistry (AREA)
  • General Health & Medical Sciences (AREA)
  • General Physics & Mathematics (AREA)
  • Immunology (AREA)
  • Pathology (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Health & Medical Sciences (AREA)
  • Acoustics & Sound (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)
  • Investigating Or Analyzing Materials By The Use Of Ultrasonic Waves (AREA)

Abstract

A magnetic drive pump includes a magnetic coupling comprising an outer magnet rotor 30 and an inner magnet rotor 32, where the outer magnet rotor, which is driven by a separate motor, is positioned radially outward of a sealing wall 22 and the inner magnet rotor is positioned radially within the sealing wall, such that rotation of the outer magnet rotor causes the inner magnetic rotor to in turn rotate and cause a centrifugal pump impeller 34 to move a liquid, a bubble detector 36 is positioned outward of the wall such that it is in a dry side 40 of the pump where it sends a signal into a wet side 23 of the pump to identify the existence of a gas within a pump fluid. The bubble detector may be an ultrasonic detector that communicates with a control.

Description

NON-INTRUSIVE VAPOR DETECTOR FOR MAGNETIC DRIVE PUMP
BACKGROUND OF THE INVENTION
This application relates to the use of a vapor detector for detecting gas in a liquid flow in a magnetic drive pump.
Magnetic drive pumps are known, and typically include a magnetic coupling that drives a centrifugal pump impeller. A motor drive is connected to the outer magnetic rotor of the magnetic coupling. The inner magnetic rotor of the magnetic coupling is connected to the pump impeller. A sealing wall is positioned between the outer magnetic and inner magnetic rotors, and provides a complete fluid seal, ensuring that the outer magnetic rotor is maintained in a "dry" side. Liquid circulates within a "wet" side in the interior of the wall, The centrifugal pump impeller moves liquid from an inlet to an outlet.
Prior art has comprised a bubble detector for detecting bubbles, or other gas within the liquid that has been positioned in the wet side of the pump.
SUMMARY OF THE INVENTION
A magnetic drive pump includes a magnetic coupling that drives a centrifugal pump. A motor drives the outer magnetic rotor of the magnetic coupling. The outer magnetic rotor is positioned radially outward of a sealing wall. The inner magnetic rotor is positioned radially within the sealing wall. Rotation of the outer magnetic rotor causes the inner magnet rotor to rotate. The inner magnet rotor drives a centrifugal pump impeller to move a liquid. A bubble detector is positioned outward of the wall such that it is in a dry side of the pump. The bubble detector sends a signal into the wet side of the pump to identify the existence of a gas within a pump liquid.
These and other features of the present invention can be best understood from the following specification and drawings, the following of which is a brief
description.
BRIEF DESCRIPTION OF THE DRAWINGS
Figure 1 is a cross-sectional view through the inventive pump.
Figure 2 is a detail of the mounting of a bubble detector probe.
DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT
A magnetic drive pump is illustrated in Figure 1 having a sealing wall 22 separating a dry side 23 from a wet side 40 for a fluid pump. A separate motor drives a shaft 28, through a bearing housing 24. Shaft 28 drives an outer magnet rotor 30, which is positioned outward of the wall 22. Magnetic flux passes through the wall 22 and drives an inner magnet rotor 32. A centrifugal pump impeller 34 is connected to the inner magnet rotor 32. Fluid passes from an inlet 35 to the impeller 34, and is driven to an outlet 37.
A bubble detector probe 36 is positioned outward of the wall 22 and communicates with a control 38. The probe may be an ultrasonic probe that will transmit and receive an ultrasonic signal. The signal transmission through liquid is different to the signal transmission through gas. Therefore, the probe can determine whether the fluid inside the wet chamber is liquid, gas or a mixture of liquid and gas.
The magnetic drive pump includes a "wet" side 40, which receives some of the liquid being pumped by the impeller 34, such that the liquid can circulate around the components radially within the sealing wall 22. In addition, a "dry" side 23 is positioned radially outward of the wall and does not receive the liquid. Probe 36 is positioned in the dry side 23.
As can be appreciated, the probe 36 faces a portion of the wet side 40 spaced away from the impeller 34. This positioning aligns the probe 36 with a portion of the chamber that is separated from the impeller by a housing wall 100.
As can be appreciated from Figure 2, and with reference to Figure 1, the probe 36 is positioned to be opposite a bushing holder 100. An outer housing wall 101 receives an olive/nut arrangement 110 to clamp and hold the probe into the housing.
The sealing wall 22 is formed of non-magnetic material. The technology for forming an appropriate ultrasonic transmitter to send a signal through the waIl 22, and against the opposed surface, is known. Essentially, the controller 38 will be able to determine if bubbles of vapor or gas are within the pump fluid by analyzing the returned signal. While the technology for providing such a probe is known, such a probe has not been utilized in this non-invasive maimer.
Although an embodiment of this invention has been disclosed, a worker of ordinary skill in this art would recognize that certain modifications would come within the scope of this invention. For that reason, the following claims should be studied to determine the true scope and content of this invention.

Claims (5)

  1. Claims: I. A magnetic drive pump comprising: a motor driving a magnetic coupling via a shaft; said shaft driving an outer magnet rotor, said outer magnet rotor being positioned radially outward of a sealing wall; an inner magnet rotor positioned radially within said sealing wall, and such that rotation of said inner magnet rotor causes a centrifugal pump impeller to move a liquid; and a bubble detector positioned outward of said sealing wall such that it is in a dry side of said pump, said bubble detector sending a signal into a wet side of said pump to identify the existence of a gas within a pump liquid.
  2. 2. The pump as set forth in claim I, wherein said bubble detector is an ultrasonic detector.
  3. 3. The pump as set forth in claim 1 or 2 wherein said bubble detector communicates with a control.
  4. 4. The pump as set forth in any preceding claim, wherein said bubble detector is positioned adjacent to a portion of the wet side of said pump which is spaced from said centrifugal pump impeller.
  5. 5. The pump as set forth in claim 4, wherein a housing separates said centrifugal pump impeller from said portion of said wet side that is associated with said bubble detector.
GB0912515A 2009-07-17 2009-07-17 Non-intrusive vapour detector for magnetic drive pump Active GB2471908B (en)

Priority Applications (13)

Application Number Priority Date Filing Date Title
GB0912515A GB2471908B (en) 2009-07-17 2009-07-17 Non-intrusive vapour detector for magnetic drive pump
US12/582,127 US20110014072A1 (en) 2009-07-17 2009-10-20 Non-intrusive vapor detector for magnetic drive pump
CL2010000550A CL2010000550A1 (en) 2009-07-17 2010-05-27 Magnetic pump comprising a motor that drives a magnetic coupling through a shaft that drives an external magnetic rotor, an internal magnetic rotor within a seal wall, and a bubble detector positioned outside the seal wall to identify the existence of a gas in a liquid in the pump
ZA2010/03880A ZA201003880B (en) 2009-07-17 2010-05-31 Non-intrusive vapor detector for magnetic drive pump
CA2706266A CA2706266C (en) 2009-07-17 2010-06-03 Non-intrusive vapor detector for magnetic drive pump
JP2010132592A JP2011021596A (en) 2009-07-17 2010-06-10 Magnetic drive pump
CO10070798A CO6280068A1 (en) 2009-07-17 2010-06-11 NON-INTRUSIVE STEAM DETECTOR FOR MAGNETIC DRAIN PUMP
KR1020100062407A KR20110007946A (en) 2009-07-17 2010-06-30 Non-intrusive vapor detector for magnetic drive pump
CN2010102309793A CN101956715B (en) 2009-07-17 2010-07-06 Non-intrusive vapor detector for magnetic device pump
DE102010026414.8A DE102010026414B4 (en) 2009-07-17 2010-07-07 Magnetic drive pump with non-intrusive vapor detector
BRPI1016226-7A2A BRPI1016226A2 (en) 2009-07-17 2010-07-15 MAGNETIC DRIVING PUMP
RU2010129213/06A RU2472038C2 (en) 2009-07-17 2010-07-15 Pump actuated through magnetic coupling and equipped with non-contact vapour detector
ARP100102622A AR078074A1 (en) 2009-07-17 2010-07-16 MAGNETIC COUPLING PUMP

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB0912515A GB2471908B (en) 2009-07-17 2009-07-17 Non-intrusive vapour detector for magnetic drive pump

Publications (3)

Publication Number Publication Date
GB0912515D0 GB0912515D0 (en) 2009-08-26
GB2471908A true GB2471908A (en) 2011-01-19
GB2471908B GB2471908B (en) 2011-11-16

Family

ID=41058173

Family Applications (1)

Application Number Title Priority Date Filing Date
GB0912515A Active GB2471908B (en) 2009-07-17 2009-07-17 Non-intrusive vapour detector for magnetic drive pump

Country Status (13)

Country Link
US (1) US20110014072A1 (en)
JP (1) JP2011021596A (en)
KR (1) KR20110007946A (en)
CN (1) CN101956715B (en)
AR (1) AR078074A1 (en)
BR (1) BRPI1016226A2 (en)
CA (1) CA2706266C (en)
CL (1) CL2010000550A1 (en)
CO (1) CO6280068A1 (en)
DE (1) DE102010026414B4 (en)
GB (1) GB2471908B (en)
RU (1) RU2472038C2 (en)
ZA (1) ZA201003880B (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111156174A (en) * 2019-12-31 2020-05-15 六安市中盛泵阀制造有限公司 Multifunctional magnetic pump
GB2581340A (en) * 2019-02-08 2020-08-19 Hmd Seal/Less Pumps Ltd Magnetic pump
US20230012837A1 (en) * 2019-12-19 2023-01-19 Koninklijke Philips N.V. Flow delivery system

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP5671359B2 (en) 2010-03-24 2015-02-18 株式会社神戸製鋼所 High strength steel plate with excellent warm workability
CN103291640B (en) * 2012-02-29 2016-07-06 黄佳华 Shurry pump under a kind of vertical nitrogen sealing gland cooling magnetic liquid
US9771938B2 (en) 2014-03-11 2017-09-26 Peopleflo Manufacturing, Inc. Rotary device having a radial magnetic coupling
US9920764B2 (en) 2015-09-30 2018-03-20 Peopleflo Manufacturing, Inc. Pump devices
DE102019002392A1 (en) 2019-04-02 2020-10-08 KSB SE & Co. KGaA Thermal barrier

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Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2581340A (en) * 2019-02-08 2020-08-19 Hmd Seal/Less Pumps Ltd Magnetic pump
GB2581340B (en) * 2019-02-08 2023-02-22 Hmd Seal/Less Pumps Ltd Magnetic pump
US11913457B2 (en) 2019-02-08 2024-02-27 Hmd Seal/Less Pumps Limited Magnetic pump
US20230012837A1 (en) * 2019-12-19 2023-01-19 Koninklijke Philips N.V. Flow delivery system
US11641975B2 (en) * 2019-12-19 2023-05-09 Koninklijke Philips N.V. Flow system delivery system and beverage machine using same
CN111156174A (en) * 2019-12-31 2020-05-15 六安市中盛泵阀制造有限公司 Multifunctional magnetic pump

Also Published As

Publication number Publication date
CN101956715B (en) 2013-03-13
RU2472038C2 (en) 2013-01-10
DE102010026414B4 (en) 2014-03-06
CL2010000550A1 (en) 2010-09-10
CA2706266C (en) 2013-10-01
BRPI1016226A2 (en) 2013-12-24
US20110014072A1 (en) 2011-01-20
CA2706266A1 (en) 2011-01-17
DE102010026414A1 (en) 2011-02-10
ZA201003880B (en) 2011-02-23
GB2471908B (en) 2011-11-16
CN101956715A (en) 2011-01-26
GB0912515D0 (en) 2009-08-26
KR20110007946A (en) 2011-01-25
RU2010129213A (en) 2012-01-20
AR078074A1 (en) 2011-10-12
JP2011021596A (en) 2011-02-03
CO6280068A1 (en) 2011-05-20

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