GB2379562A - Pump driving system using an induction coupling - Google Patents
Pump driving system using an induction coupling Download PDFInfo
- Publication number
- GB2379562A GB2379562A GB0121885A GB0121885A GB2379562A GB 2379562 A GB2379562 A GB 2379562A GB 0121885 A GB0121885 A GB 0121885A GB 0121885 A GB0121885 A GB 0121885A GB 2379562 A GB2379562 A GB 2379562A
- Authority
- GB
- United Kingdom
- Prior art keywords
- magnetization
- electrical
- yoke
- driving system
- induction type
- 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
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Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K49/00—Dynamo-electric clutches; Dynamo-electric brakes
- H02K49/02—Dynamo-electric clutches; Dynamo-electric brakes of the asynchronous induction type
- H02K49/04—Dynamo-electric clutches; Dynamo-electric brakes of the asynchronous induction type of the eddy-current hysteresis type
- H02K49/046—Dynamo-electric clutches; Dynamo-electric brakes of the asynchronous induction type of the eddy-current hysteresis type with an axial airgap
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B17/00—Pumps characterised by combination with, or adaptation to, specific driving engines or motors
- F04B17/03—Pumps characterised by combination with, or adaptation to, specific driving engines or motors driven by electric motors
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B9/00—Piston machines or pumps characterised by the driving or driven means to or from their working members
- F04B9/02—Piston machines or pumps characterised by the driving or driven means to or from their working members the means being mechanical
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- 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
- F04D13/027—Details of the magnetic circuit
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D25/00—Pumping installations or systems
- F04D25/02—Units comprising pumps and their driving means
- F04D25/026—Units comprising pumps and their driving means with a magnetic coupling
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K49/00—Dynamo-electric clutches; Dynamo-electric brakes
- H02K49/02—Dynamo-electric clutches; Dynamo-electric brakes of the asynchronous induction type
- H02K49/04—Dynamo-electric clutches; Dynamo-electric brakes of the asynchronous induction type of the eddy-current hysteresis type
- H02K49/043—Dynamo-electric clutches; Dynamo-electric brakes of the asynchronous induction type of the eddy-current hysteresis type with a radial airgap
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
A motor shaft 2 is coupled to a pump shaft 20 in a non-shaft contacting manner by an induction (eddy current) coupling. Thus, the motor shaft does not penetrate through the housing of the pump and leakage of high pressure fluid or particles from the pump past a bearing seal is avoided. In one embodiment (fig. 1), a coil 7 in a yolk 5 is mounted on a motor housing 1. A first ferromagnetic body 6 is attached to the motor shaft 2, and may be designed as a flywheel for smoothing the driving power of shaft 2. Body 6 has inner and outer rings of teeth 6a, 6b (fig.2) in which north and south poles are induced by coil 7. A non-magnetic, electrically conducting plate 12, which may be made of copper or aluminium, is attached to the pump shaft 20. Magnetic flux from the poles of the first ferromagnetic body 6 passes through plate 12, the magnetic circuit being completed via a second ferromagnetic body 13 behind plate 12 and corresponding to first body 6. The driven plate 12 and the second ferromagnetic body 13 are arranged inside seal cover 10 of pump housing 16. The invention prevents motor failure through ingress of fluid or particles from the pump.
Description
- 1 - PUMP l}RIVING SYSTEM O}7 INDUCTION TYPE FOLD OF IRE V1 >L]ION
The present invention relates to a pump driving system of induction type and, more particularly, to a driving system of induction type for use in a high pressure pump, whereby the pump shah is rotated in a non-shaft contacting manner so that the pump will be satisfactorily sealed.
BACKGELIIiND OF THE By- v NTlON The existing pump equipments being used in the industrial process are open driven by a motor shah to maintain a predetermined pressure therein. Such method has to guarantee a gas-tight seal for the motor shaft to prevent the high pressure gas or particles contained therein throw leakage of the pump. However, it is quite difficult to have the equipment satisfactorily sealed using such a method As known, to maintain a not operation of the motor shah, it is required to have the pump fitted with a bearing seal to allow the pump shad to be freely rotated under high speed for maintaining a high pressure gas therein. The motor shad has to perorate through the bearing seal or wall so as to drive the pump shah. It is obviously that the high pressure gas or particles contained therein due to the high pressure Hereof is liable to leak through the clearance of the bearing seal, so that it is difficult to maintain a high pressure of the gas and more worse, the gas or particles contact i therein is liable to spread to the interior of the motor thereby damaging or failing the motor In view of the foregoing, the present applicant has contrived a pump driving system of induction type in which the pump shad is rotated in a non-shaR contacting manner to =, arantee a satisfactory seal.
BRA SUIT A1lY OF TIFF, 1?4V 1 019 The primary object of the present invention is to provide a pump dwring
system of induction type that drives a pump shad by way of electromagnetic interaction, so that the motor shaft is not required to penetrate through the pump housing so that the pump can be kept in a gas- tight seal to avoid the possible ieakag,e of the high pressure fluid or particles contained therein, so that the fluid pressure of the pump can be satisfactorily maintained and the breakdown of the motor due to the leakage can be prevented.
In accordance with one aspect of the present invention, the pump driving system of induction type comprises: a first shah rotatably mounted on a support housing, a second shad rotatably mounted on a pump housing and having one end at which a saw cover is provided, the seal cover having a circular plate portion being made of electrical-insulated matenal; a first magnetization body mounted on the first shad) and being integrally rotated with the first shah; a yoke mounted on the support housing; an electrical coil mounted on the yoke and being positioned adjacent and corresponding Jo the first magn i tion body for generating magnetic flux; a second magnetization body being provided inside the seal cover, the second magnetization body being positioned adjacent and corresponding to the first magnetization body, so that the first magnetization body, the second r, etization body, the yolce, and the elect coil are configured to constitute a closed magnetic path along which the magnetic flux generated from the electrical coil will travel; and a nonmagnetically electrical conducting body being provided inside the seal cover and being positioned between the first magnetization body and the second magnetization body, the nonrnagneticady electrical-conducting body being mounted
on the second shaft and bein;, integrally rotated with the second shaft; whereby, when the first shaft is rotated, the first magnetization body is allowed to move relative to the yoke and the electrical coil to change the magnetic flux of the closed magnetic path to have the nonmagnetically electrical-conducting body induced eddy current so that the second shaft is capable of being rotated by way of the electromagnetic interaction involved between the eddy current and the magnetic field of the closed magnetic path.
In accordance with another aspect of the present invention, a pump driving system of induction type comprising: a first shaR rotatably mounted on a support housing; a second shad rotatably mounted on a pump housing and having one end at which a seal cover is provided, the seal cover having a circular plate portion being made of elesxncal-insulated material, a first magnetization body mounted on the first shaft and being integrally rotated wi.+,h the first shah; a yoke prodded inside the seal cover and mounted on the pump housing, an electrical coil mounted on the yoke for generating magnetic flux, the yoke and the electrical coil being positioned adjacent and corresponding to the first magnetization body; a second maximization body being provided inside the seal cover and being integrally rotated with the second shad, so that the first magnetization body, the magnetization body, the yoke, and the electrical coil ore configured to chute a closed magnetic path along which the magnetic flux generated from the electrical will travel; and a nonmagnetically ele xncal nducting body being positioned between the first rnagnet ation body and the second magnetization body, the nonmagnetically electrical- conducting body being attached to an inner surface of the first
magnetization body and being integrally rotated with the first Than; whereby when the first shad is rotated, the first magnetization body is allowed to move relative to the yoke and electrical cod! to change the magnetic flux of the closed magnetic path to have the nonmagnetically electrical-conducting body induced eddy currents so that the second shad is capable of being rotated by way of the electrom tic interaction involved between the eddy current and the magnetic field of the closed magnetic path.
Other characteristics and advantages of the present invention will be fully illustrated in the following detailed description with reference to the appended
drawings. However, the drawings are illustrative only and do not limit the scope of the present invention BRIEEDES IPOONOF 1HE AWIN
FIG. I is a schematically sectional view of the first embodiment of the present invention. FIG. 2 is a schismatically front view of the first magnetization body of [lG. I PIG. 3 is a schematically sectional view of the second embodiment of the present invention FIG. 4 is a schematically front view of the second magnetization body of FIG. 3. ]:)ETAlLTi2 DES( rlOlS OF TElE P ERREO EMBOl:) I According to Lenz's law of the Physics, when a magnetic flux passing through the area e c}osed by an electri=} circuit is changed, an electromotive force and current will be induced in the circuit. Similarly, when a magnetic flux passin through a nonmagnetic metal block or plate is changed, eddy current will be induced in the block or plate. As a result, the changing magnetic flux passing through the bloei; or plate wi}} interacted ninth the induced eddy current to thereby exert an electromagnetic force on the block or block so as to oppose the change of the
- 5 - magnetic flux.
The present invention has applied the principles of the electromagnetic induction to contrive a driving device that employs a nonmagnetic metal block or disk being passed through a changing magnetic flux and being coupled to mechanical means or shaft, so that the electromagnetic force resulting from the interaction of the changing magnetic flux and the eddy content can cause a desired shad to rotate lbe two embodiments ofthe present invention will he Filly illustrated below.
Referring to FIG. 1, the first embodiment of the present invention includes a first shad 2, a second shah 20, a first magnetization body 6 being preferably made of ferromagnetic material a second magnetization body 1 being preferably made of ferromagnetic material, an electrical coil 7, a yoke I, and a nonmagnetically electucal-conducting body 1. The first shad 2, being an input shah driven by a powered equipment (such as a motor) is mounted on a support housing I (such as a motor housing) The second shaft 20, being a driving shad of a high pressure pump for maintaining the pump at a prede ennined pressure, is mounted on a pump housing 16. A seal cover 10 having a circular plate portion 101 is provided at one end of the second shaft 90 for preventing the high pressure fluid or particles contained therein from leakage of Me pomp. Also, the circular plate portion 101 is disposed between the first shah 2 and the second shad 20. As shown in FIG. 2, the first magnetization body 6 can be designed as a flywheel structure for smoothing the driving power of We first shad 2. The flywheel structure is designed to have an outer ring 6a and an inner ring 6b, between which a ring-shaped groove is defined. The outer ring 6a and the inner ring 6b are respectively distributed untie opposing magnetic poles (N pole or S pole), being induced from the electrical coil 7 and the yoke S. along the circuTnferences thereof. Referring back to FIG. 1, the second magnetization body I, can be shaped as an annular body that is provided inside the seal cover 10 and is located adjacent and
- 6 - corresponding to the first magnetization body 6 The yoke S is mounted on the supporting housing that supports the first shad 2 The electrical coil 7 is mounted on the yoke 5 for generating magnetic flux. The yoke and the elegiacal coil 7 are recerved in the ring-shaped groove defined by the outer ring 6a and the inner ring 6b.
It is to be understood that the circular plate portion 101 of the seal cover 10 is preferably made of an electrical-insulated material to avoid generating unwanted eddy current on tire portion, as the eddy current generation of the portion will effect the eddy current induction of the nonmagnetically electrical-conducting body 12 to thereby reduce the driving torque of the second magnetization body 1. According to the arrangement as shown, the first magnetization body 6, the second magnetization body 1, the electrical coil 7, and the yoke are configured to constitute a closed magnetic path along which the magnetic flux generated from the electrical coil will travel. The nonmagnetically elecmc -conducting body can be designed as a disk being mounted on the second shaft 20 for being integrally rotated with the second shad 2( e nanma gnetically electrical-conducting body is provided inside the seal cover 10 and positioned between the first magnetization body 6 and the second magnetization body 1. The nonmagnetically electrical-conducting body can be made of copper or aluminum. According to the arran,ement as shown, the nonmagnetically electrical-conducting body 12 is so positioned to allow the magnetic flux generated from the electrical coil 7 to pass through it. Therefore, when the magnetic flux of the closed magnetic path is changed through the rotation of the first magnetization body 6, the nonmagnetically electrical-conducting body 12 will be induced eddy current.
Refemng tO Fly. 17 when the electrical coil 7 is energized and the first shad 2 is rotated the first magnetization body 6 can be rotated to move relative to the electrical coil 7 and the yoke so that the magnitude of Me magnetic flux can be changed to have the nonmagnetically electricalconducting body 12 induced eddy current.
Therefore, an electromagnetic force will effect on the nonmagnetically electric -
conducting body 12 by way of the electromagnetic interaction involved between the magnetic field of the magnetic flux and the eddy current, and this will cause the
second shah ZO to rotate.
Further, in order to adjust the pressure of the high compressed fluid in the pump housing 16, the rotating speed of the shad 20 shall be controllable. Thus, the present invention is preferably provided with current or voltag,e means for adjusting the magnetic flux so as to control the shaft speed.
Referring to FIG. 3, the second embodiment of the present invention includes a first shad 2', a second shad 20', a first magnetization body 6' being preferably made of ferromagnetic material, a second magnetization body 13' being preferably made of ferromagnetic material, an electrical coil 7', a yoke I', and a nonmagnetically electrical- conducting body 12'. The first shad 9', being an input shaD driven by a powered equipment such as a motor, is rotatably mounted on a support housing 1' such as a motor housing. The second shad 9O', being a driving shaft Of a high pressure pump, is mounted on a pump housing 16' for maintaining the pump at a predetermined pressure. As shown, a seal cover 10' having, a circular plate portion 1Ol? is provided at one end of the second shaPc 20' for preventing the high pressure fluids or particles contained therein from leakage of the pump. Also, the circular plate portion lOI' is disposed between the first shad 2' and the second shaD 20' The first maximization body this mounted on the first shaft 2'and integrally rotated with the first shad 2'. As shown, the first magnetization body 6' can be designed as a cylindrical flywheel structure for smoothing the rotation of Me first shaft 2'. As shown in FIG. 4, the second magnetization body 13, being Conned as a toothed ring, is provided inside the seal cover 10' and is positioned adjacent and corresponding to the first magnetization body 67. Referring back to FIG. 3, the yoke 5, being formed as
a ring-shaped structure, is provided inside the seal cover}O' and mounted on the pump housing 16'. The electrical coil 7' is mounted on the yoke 5' for generating magnetic flux. The yoke 57 and electrical coil 7' are positioned adjacent and corresponding to the first magnetization body 67. It is to be understood that the circular plate portion 101 of the seal cover is preferably made of an electrical-
insulated material tO avoid generating unwanted eddy current on the portion, as the eddy current generation of the portion will elect the induced eddy current of the nor agnetically electrical-conducting body 12 to thereby reduce the driving torque of the second magnetization body 13' According to the arrangement as shown, the first magnetization body 6', the second magnetization body 1,', the electrical coil 7', and the yoke 57 are configured to constitute a closed magnetic path along which the magnetic flux generated from the electrical coil will travel The nonmagnetically electrical onduGring body 12', being formed as cylindrical shell, is attached to an inner surface of the cylindrical magnetization body 6' and is capable of being rotated together with the cylindrical magnetization body 67. AS show the nobly electrical- conducting body l2' is positioned between the first magnetization body 6' and the second magnetization body 13'. The nonmagnetically eiectrical- condu g body 12 can be made of copper or aluminum. According to the arrangement as shown, the closed magnetic path for the magnetic flux generated Mom the electrical coil is going to pass through the nonmagnetically electncal-conducting body 12? so that? when the magnetic flux of the path is changed through the rotation of the first shaR 2', the nonmagnetically electrical-conducting body 1Z' can be induced eddy Current.
Referring to I1. 3, when the electrical coil 7' is energized and the first shaR 2' is rotated, the first magnetization body 6' can be rotated to move relative to the electrical coil 7' and the yoke 5' so that the magnitude of the magnetic flux can be changed to have the nonmagnetically electrical-conducting body FEZ' induced eddy
_ 9 _ current. Therefore, an electromagnetic force will effect on the nonmagnetically electrical-conducting body 12' by way of the electromagnetic interaction involved between the magnetic field of the magr enc flux and the eddy currents and this will
cause the second shaft 20' to rotate.
Further, in order to adjust the pressure of the high compressed fluid in the pump housing 16', the rotating speed of the shad 20' shall be controllable. Thus, the present invention is preferably provided with current or voltage adjustment means for adjusting the magnetic flux so as to control the shah speed.
More fisher, in order to enhance the magnetization effect of the closed magnetic path, the cylindrical flywheel structure mentioned above can be provided with a ring-
shaped iron ring 8' being attached to an inner surface of the flywheel structure corresponding to the electrical coil 77 and the yoke I'.
As a summary, the present invention has applied the electromagnetic induction
principles to contrive a driving, device for a high pressure pump in a non-shaR contacting manner so that a motor shad is not required to penetrate through the pump housing so that the high pressure fluid or particles contained therein can be prevented hom leakage of the pump so as to assure the specified life span of We motor.
It will be understood that the embodiment illustrated shows one application of the invention only for the purposes of illustration. In practice the invention may be applied to many different configurations, the detailed embodiments being straightforward for those skilled in the art to implement.
Claims (1)
10 - WHAT IS CLAIMED IS:
_.. . A pump driving system of induction type, comprising: a first shah rotatably mounted on a support housing; a second shaft rotatably mounted on a pump housing; a first magnetization body mounted on said first shad and being integrally rotted win said shad; a nonmagnetically electncalconducting body mounted on either said first sac or said second shaft; a seal cover provided at one ena of said second shaft and having a circular plate portion that is made of electncal-insulated material; and means for providing and changing magnetic flux to pass through said first magnetization body, said means being actuated by said first shad to change the magnetic flux passing through said first magnetization body to have said nonmagnetically electrical-conducting body induced eddy current so as to rotate said second shah by way of electromagnetic interaction of He eddy current and the magnetic field of the magnetic Rho.
2. The pump driving system of induction Me as recited claim 17 whet said nonmagnetically electrical-conducting body is mounted on said second shaD and integrally rowed with said second shah, so that the changing magnetic flux is capable of creating an electromagnetic force on said nonmagnetically electncal-conducting body so as to route said second shah.
3. The pump driving system of induction type as recited in claim 2 wherein said means for prodding and changing magnetic flux includes an electrical coil and a yoke wing mooted on said support ho ng, wherem said elegiacal coil is mounted on said yolk For generating the magnetic flux, said electrical coil and said yoke are positioned adiamot and corresponding to said first magnetmaiion body; whereby,
when said first shah is rotated, said first rnagne zation body is allowed to move relative to said electrical coil and said yoke so that the magnetic flux provided Tom said electrical coil and passing through said first magnetization body is going to be changed. 4. The ping driving system of induction type as recited in claim a, wherein a second magnetization body is provided inside said seal cover and is positioned adjacent and corresponding to said first magnetization body, so that said first magnetization body, said magnetization body, said electrical coil, arid yoke are configured to co tute a closed magnetic path along which the magnetic Rux will travel, said nonmagnetically electrical-conducting body is positioned between said first magnetization body arid second magnetization body, whereby Me changing magnetic flwc is capable of creating an electromagnetic force on said nonmagnetically elec rical onducting body so as to rome said second shah.
5.+ Else pump driving system of induction type as recited in claim 4, wherein said first magnetization body is a flywheel structure.
6. The pump driving system of induction type as recited in claim 1, wherein a Pond magnetization body is provided inside said seal cover and integrally rotated with said second shaft, said second magnetization body is positioned adjacent and corresponding to said first magnei aiion body, said nonmagnencatIy ete ricat-
conducting body is mounted on said first magnetization body and integrally rotated with said few motion body, sand no ically electrical conducting body is positioned between said first magnetization body and second magnetization body, said means For providing and chafing magnetic flux including an electrical cod! and a yoke is promded inside said seal cover, said electrical coil is mounted on said yoke for generating the mastic flux, said electnc coal and said yoke are positioned adjacent and corresponding to said first magnetization body, so that said first magnetization
- 12 body, said second magnetization body, said electrical coil, and said yoke are configured to cor itute a closed magnetic path along which the magnetic flux will Ravel, whereby the craning magnetic flux is capable of creating an electromagnetic force on said nonmagnetically elecmcalconducting body so as to rotate said second she. 7. Me pop driving system of induction type as recited in claim 6, wherein said first magnetization body is a flywheel structure.
8. A pump driving system of induction type, comprising a first shad rotatably mounted on a support housing; a second shah rotundly mounted on a pump housing and having one end at which a seal cover is provided, said seal cover having a circular plate portion being made of ele cal- nsulated material; a first magnetization body mounted on said first shad and being integrally rotated with said first shah; a yoke mounted on said support housing; an electrical coil mounted on said yoke for generating magnetic Bux, said electrical coil being positioned adjacent and corresponding to said first magnetization body; a second n neiization body being provided inside Id seal GOWN, said second magnetization body being position adjacent Id corr ondi to mid fim magr ization body, so that said first magnetization body, said second magnetization body, said yoke, and said electrical coil are configured to cordite a closed magnetic path along which the magnetic flux generated Mom said electrical coil will travel, and a nonmagnetically electrica} ontlucting body being provided inside said seal cover and being positioned between said first rnagnetLzation body and said second
- 13 -
maximization body, said nonmagnetically electrical conducting body being mounted on said second shaR and being integrally routed with said second shaft; whereby, when said first shad is rotated, said first magnetization body is allowed to move relative to said yoke and Saud electrical coil to change the magnetic flux of said closed magnetic path to have said nonmagnetically electrical nducting body induced eddy current so that said second shad is capable of being rotated by way of the electromagnetic interaction involved between said eddy current and the magnetic field of said closed magnetic path.
9. The pump driving system of induction type as recited in claim 8, wherein said first magnetization body is a flywheel structure.
10 The pump driving system of induction type as recited in claim 9, wherein said flywheel structure has an outer rug and an inner ring, between which a ring-
shaped groove is defined for receiving said yoke and said electrical coi}, and along the circumferences of which opposing magnetic poles are respectively distributed.
I. The pump diving system of induction type as recited in claim 10, fimher comprising an electrical means for adopting the current flowing through said electrical coil to adjust the magnetic flux so as to control the rotating speed of said second shad.
12. The pump driving system of induction type as recited in claim ll, wherein said nonmagnetically electrical-concincting body is shaped as a disL 13. The pump driving system of induction type as recited in claim 12, wherein said disk is made of copper or aluminum.
14. The pump driving system of induction type as recited in claim lS, wherein said second magnetization body is shaped as an annular body.
15. The pump driving system of induction type, composing a firm shad romably mounted on a support housing;
- 14 -
a second shaft rotatably mounted on a pump housing and having one end at which a seal cover is provided, said seal cover having a circular plate portion being made of eleewcal-msulated material; a first magnetizatiorr body mounted on said first shah arm being integrally rotated with said first shaPr; a yoke provided inside said seal cover and mounted on said pump housing; an electrical coil mounted on said yoke for generating magnetic flux, said yoke and said electrical m 1 being positioned adjacent and corresponding to said first magnetization body; a second magnetization body provided inside said seal cover and being integrally rotated with said second shah, so that said first ma;, eiizaiion body, said magnetization body, said yoke and said electrical coil are configured to constitute a closed magnetic path along which the magnetic flux generated Dom said electrical will travel; and a nonmagne.tically eIecuicaI onduciing body being positioned between said first magnetization body and said second r gnetization body, said nonmagnetically electrical nduming body being attached to as inner space of said first magnetization body and being integrally rotated with said first shah; whereby? when said first shaft is rotated, said first magn.e ion body is allowed to mow relative to said yoke and eles tncal coil to change the magnetic flux of said closed magnetic path to have said Donm ically ele ricaI-conducs ng body induced eddy current, so that said second shaft is capable of being rotated by way of the electromagnetic interaction involved between said eddy current and the magnetic field of said closed magnetic
path. 16. 1 pump driving system of induction type as recited in claim 15, wherein said first magnetization body is a flywheel structure.
17. Me pump driving system of induction type as recited in claim 16, archer comprising an electrical means for adjusting the current flowing through said elecmcai coil to amuse the magnitude of the magnetic flux so as to control the rotating speed of said second shah.
18 The pump driving system of induction type as recited in claim 17, wherein said nonmagnetically electrical-conducting body is shaped as a cylindrical shell being attached to an inner surface of said flywheel structure.
t9. The pump driving system of induction type as recked m claim IS, wherein said nonmagnetically electrical - onducting body is made of copper OF alwninum. 2G. The pump driving system of induction type as recited in claim 19, wherein said flywheel structure is provided with a ring-shaped iron positioned corresponding to said yoke and said eIec ncal coil for increasing the magnetization effect of said closed magnetic path.
21. The pump driving system of induction type substantially as hereinbefore described with reference to the accompanying drawings.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB0121885A GB2379562B (en) | 2001-06-19 | 2001-09-10 | Pump driving system of induction type |
Applications Claiming Priority (5)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| TW090210289U TW502784U (en) | 2001-06-19 | 2001-06-19 | Induction type pump driving device |
| JP2001240642A JP3798663B2 (en) | 2001-06-19 | 2001-08-08 | Inductive pump drive |
| US09/947,350 US6700264B2 (en) | 2001-06-19 | 2001-09-07 | Pump driving system of induction type |
| GB0121885A GB2379562B (en) | 2001-06-19 | 2001-09-10 | Pump driving system of induction type |
| DE10145355A DE10145355A1 (en) | 2001-06-19 | 2001-09-14 | Induction-type pump drive unit generates changed flux which acts on non-magnetic conductive material to generate electrical eddy current for causing rotation of rotary shaft |
Publications (3)
| Publication Number | Publication Date |
|---|---|
| GB0121885D0 GB0121885D0 (en) | 2001-10-31 |
| GB2379562A true GB2379562A (en) | 2003-03-12 |
| GB2379562B GB2379562B (en) | 2005-12-21 |
Family
ID=35447636
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB0121885A Expired - Fee Related GB2379562B (en) | 2001-06-19 | 2001-09-10 | Pump driving system of induction type |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB2379562B (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2390750A (en) * | 2001-12-21 | 2004-01-14 | Schlumberger Holdings | magnetic coupling for downhole motor/pump |
| US6863124B2 (en) | 2001-12-21 | 2005-03-08 | Schlumberger Technology Corporation | Sealed ESP motor system |
| US6988556B2 (en) | 2002-02-19 | 2006-01-24 | Halliburton Energy Services, Inc. | Deep set safety valve |
| US8038120B2 (en) | 2006-12-29 | 2011-10-18 | Halliburton Energy Services, Inc. | Magnetically coupled safety valve with satellite outer magnets |
| US8573304B2 (en) | 2010-11-22 | 2013-11-05 | Halliburton Energy Services, Inc. | Eccentric safety valve |
| US8919730B2 (en) | 2006-12-29 | 2014-12-30 | Halliburton Energy Services, Inc. | Magnetically coupled safety valve with satellite inner magnets |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB757062A (en) * | 1954-11-13 | 1956-09-12 | Igor Vasilie Zozulin | Improvements in and relating to magnetic drive centrifugal pumps |
| US3890515A (en) * | 1972-11-30 | 1975-06-17 | Mechanique Sulzer Comp D Const | Magnetic coupler for coupling rotary shafts |
| GB1400420A (en) * | 1971-08-12 | 1975-07-16 | Davies E J | Eddy current couplings |
| GB1450191A (en) * | 1973-03-23 | 1976-09-22 | Pye Ltd | Magnetic induction couplings |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS4914156B1 (en) * | 1970-03-26 | 1974-04-05 |
-
2001
- 2001-09-10 GB GB0121885A patent/GB2379562B/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB757062A (en) * | 1954-11-13 | 1956-09-12 | Igor Vasilie Zozulin | Improvements in and relating to magnetic drive centrifugal pumps |
| GB1400420A (en) * | 1971-08-12 | 1975-07-16 | Davies E J | Eddy current couplings |
| US3890515A (en) * | 1972-11-30 | 1975-06-17 | Mechanique Sulzer Comp D Const | Magnetic coupler for coupling rotary shafts |
| GB1450191A (en) * | 1973-03-23 | 1976-09-22 | Pye Ltd | Magnetic induction couplings |
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2390750A (en) * | 2001-12-21 | 2004-01-14 | Schlumberger Holdings | magnetic coupling for downhole motor/pump |
| US6863124B2 (en) | 2001-12-21 | 2005-03-08 | Schlumberger Technology Corporation | Sealed ESP motor system |
| GB2390750B (en) * | 2001-12-21 | 2005-03-09 | Schlumberger Holdings | Sealed ESP motor system |
| US6988556B2 (en) | 2002-02-19 | 2006-01-24 | Halliburton Energy Services, Inc. | Deep set safety valve |
| US7213653B2 (en) | 2002-02-19 | 2007-05-08 | Halliburton Energy Services, Inc. | Deep set safety valve |
| US7434626B2 (en) | 2002-02-19 | 2008-10-14 | Halliburton Energy Services, Inc. | Deep set safety valve |
| US7624807B2 (en) | 2002-02-19 | 2009-12-01 | Halliburton Energy Services, Inc. | Deep set safety valve |
| US8038120B2 (en) | 2006-12-29 | 2011-10-18 | Halliburton Energy Services, Inc. | Magnetically coupled safety valve with satellite outer magnets |
| US8919730B2 (en) | 2006-12-29 | 2014-12-30 | Halliburton Energy Services, Inc. | Magnetically coupled safety valve with satellite inner magnets |
| US8573304B2 (en) | 2010-11-22 | 2013-11-05 | Halliburton Energy Services, Inc. | Eccentric safety valve |
| US8869881B2 (en) | 2010-11-22 | 2014-10-28 | Halliburton Energy Services, Inc. | Eccentric safety valve |
Also Published As
| Publication number | Publication date |
|---|---|
| GB0121885D0 (en) | 2001-10-31 |
| GB2379562B (en) | 2005-12-21 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| 732E | Amendments to the register in respect of changes of name or changes affecting rights (sect. 32/1977) | ||
| PCNP | Patent ceased through non-payment of renewal fee |
Effective date: 20080910 |