US2556435A - Means for cooling lubricating oil in submerged motors - Google Patents

Means for cooling lubricating oil in submerged motors Download PDF

Info

Publication number
US2556435A
US2556435A US158394A US15839450A US2556435A US 2556435 A US2556435 A US 2556435A US 158394 A US158394 A US 158394A US 15839450 A US15839450 A US 15839450A US 2556435 A US2556435 A US 2556435A
Authority
US
United States
Prior art keywords
shaft
motor
casing
oil
head
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.)
Expired - Lifetime
Application number
US158394A
Inventor
Kenneth E Moehrl
Jr Charles B Porter
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.)
Layne and Bowler Inc
Original Assignee
Layne and Bowler Inc
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 Layne and Bowler Inc filed Critical Layne and Bowler Inc
Priority to US158394A priority Critical patent/US2556435A/en
Application granted granted Critical
Publication of US2556435A publication Critical patent/US2556435A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

Classifications

    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K9/00—Arrangements for cooling or ventilating
    • H02K9/19—Arrangements for cooling or ventilating for machines with closed casing and closed-circuit cooling using a liquid cooling medium, e.g. oil
    • 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
    • F04D29/06—Lubrication
    • F04D29/061—Lubrication especially adapted for liquid pumps
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
    • F05B—INDEXING SCHEME RELATING TO WIND, SPRING, WEIGHT, INERTIA OR LIKE MOTORS, TO MACHINES OR ENGINES FOR LIQUIDS COVERED BY SUBCLASSES F03B, F03D AND F03G
    • F05B2240/00—Components
    • F05B2240/60—Shafts
    • F05B2240/61—Shafts hollow

Definitions

  • This invention relates to means for cooling the lubricating oil used with submerged electric motors such as drive the centrifugal pumps largely used in deep well pumping.
  • the motor In this type of pumping the motor is enclosed in a casing as nearly hermetically sealed as possible against inflow of water, and the casing around the motor is substantially filled with lubrieating oil, and is disposed below the pump with the motor shaft extending through a stufiing box or seal for connection to the pump, or if not so filled, every endeavor is used to divert the oil used in lubrication to the motor bearings, and away from the rotor and stator coils and away from the gap therebetween.
  • the oil within the casing is often stagnant and becomes overheated, and even if circulated, provision is not made for cooling the oil and little or no provision is made for using the oil to cool the rotor and stator coils.
  • the objects of the present invention are to provide in an enclosed submergible motor, a motor casing substantially filled with lubricating oil, and to provide:
  • Fig. 1 is a sectional elevational view of an electric motor in accordance with our invention showing means for effecting oil circulation and cooling.
  • Fig. 2 is an elevational view on a smaller scale showing the motor casing and its relation to a tandem type deep well pump.
  • Fig. 3 is a sectional elevational view of a motor similar to that shown in Fig. 1 with a modified means for effecting the cooling of the oil;
  • Fig. 4 is a sectional elevational view of a stuffing box and seal for the motor, showing the oil passage returning from the cooling means passing through the seal.
  • Fig. 5 is a sectional plan view taken as on the line VV of Fig. 3.
  • I2 are pump bowls connected in tandem, to form a multistage water pump used in deep well pumping.
  • the bowls enclose pump impellers (not shown) which are driven by a shaft I I.
  • the shaft i4 is a continuation of the shaft of a motor it, which motor is disposed below the pump bowls and connected to and supported from the lower of the bowls by an interposed strainer I8 and a suction nozzle I9, the strainer having wall slots or other openings 20 through which the water which is pumped enters the suction end of the bowls I2.
  • the motor I6 is of sealed type adapted for submergence and includes a casing which for construction, assembly, and access to the parts,
  • the sections i'I, IiA and HE may be coupled together and secured to the strainer I8 by studs 22 and nuts 22A.
  • the casing is closed at its lower end by a lower head 24, which supports the lower end of the shaft I4 through an annular bearing 26, an annular bearing retainer housing 21, and an annular bearing 28 which journal the shaft.
  • the head 24 preferably includes a depending sump portion 24A which communicates with the casing through openings 2413.
  • the casing of the section I? is provided at its upper end with an inwardly extending annular flange 30, and the intermediate section IIA has an intermediate head portion 32 which seats on this flange.
  • the head portion 32 has a downwardly extending cylindrical portion 32A which carries at its lower end an upper bearing 34 for the shaft I4.
  • openings 32B extend through the cylindrical portion 32A, and above these openings the head is chambered out concentrically around the shaft to receive and cooperate with an impeller 36 to form a pump for circulating oil.
  • the impeller is secured to, and driven by, the shaft I4, the openings 32B communicating the section Il with the intake of the impeller.
  • the section I'IB includes an integral head which may comprise an inwardly extending annular flange 31, a downwardly continuing cylindrical wall portion 31A, and a central head portion 31B, terminating the cylindrical portion, the downwardly extending portion establishing with the casing wall an annular surge chamber 310.
  • the head portion is chambered out concentrically around the shaft to receive an annular flange portion 38A of a seal 38.
  • the flange portion 38A of the seal seats on a gasket 40 disposed in the chambered out central portion 313 of the head and is clamped against the gasket by an annular flange 42 secured by screws 42A.
  • the shaft l4 continues through the seal 38 and upward through the strainer [8 to drive the pump impellers (not shown) in the bowls l2.
  • the oil pump impeller 36 discharges through a tube 44 to the upper coil 50 of a bank of coils 52 disposed in the strainer section 18 of the water pump.
  • the oil delivered to the upper coil of the bank fiows downward through the coils and a connecting tube 54 into the seal 38 which is shown in sectional elevation in Fig. 4.
  • the seal includes resilient annular sealing rings 56 which are disposed between annular shoes 58 and held in shaft contact by a coil spring 66 disposed between and bearing against the shoes and maintain an annular oil space 62 around the shaft, into which space the tube 54 discharges.
  • the shaft i l at least from the seal level to its lower end, has a bore 64 which provides an oil passageway, and at the level of the annular space E2 of the seal has lateral openings 66 establishing communication between the annular space and the shaft passageway. At its lower end the passageway discharges through the axial opening 68 in the bearing retainer 2? into the sump 24A.
  • the motor may be filled with oil through a filling opening Ill.
  • the motor [6 includes an annular stator 12 which is carried by the casing section I1, and a rotor 14 which is mounted on and driven by the shaft 14, the rotor being externally cylindrical and separated from the stator by the usual gap 16, which is open both top and bottom and establishes a connecting passageway from the lower portion of the section I! to the upper portion thereof.
  • the coil 52 and other passageways, the sump 24A and the motor casing, to a level 31D about half the depth of the surge chamber 310, are filled with oil and the motor put in operation.
  • the oil pump impeller 36 draws oil from the motor chamber and sump 24A and discharges the oil through the tube 44 and the upper coil 50 from which it returns through the bank of tubes 52A.and the tube 54, seal 38 and bore 64 of the shaft, to the sump.
  • a single casing section C may be used, which section is of substantially greater depth than the corresponding two sections previously shown and has associated there'- I31A of correspondingly greater depth, establishing a relatively deep surge chamber [310 which acts as a cooling chamber.
  • the oil pump 36 discharges directly into the casing section 110.
  • a return tube I54 leads from the surge chamber into the seal 38, which is substantially as shown in Fig. 4 and previously described, but is inverted as regards Fig. 4 to facilitate connection of the return pipe.
  • the oil pump 36 discharges through a short discharge tube I56 which is arcuately curved to discharge substantially circumferentially around the casing wall and may be spiralled slightly upward.
  • the motor section is coupled to the pump bowls through a strainer section which may be identical with the strainer section l8 of Fig. 2, or be a section H8 of modified shape as indicated in Fig. 3.
  • the surge chamber 31C of Fig. 1, or [31C of Fig. 3 will be also referred to as an expansion or cooling chamber.
  • a deep well pump which includes pumping means, an intake section below and supported from said pumping means and a sealed type submersible motor substantially filled with oil supported by said intake section, said motor including a casing, a vertical shaft, a rotor, and a stator, said casing having a lower closure head including a depending sump, an upper head through which said shaft extends to driving engagement with said pumping means, and an intermediate head dividing said casing into a motor section and an expansion section; said upper head including a seal surrounding said shaft and substantially hermetically sealing said casing; oil circulatin means including a housing formed in said intermediate head around said shaft; a pump impeller secured on said shaft, disposed in and cooperating with said housing to form a centrifugal pump, said impeller having an intake facing and communicating through said intermedi ate head with said motor section, and said housing having a discharge opening in said expansion section; a tubular cooling coil disposed in said intake section, a tube communicating said discharge opening with said coil, and a return tube communicating said coil into said motor
  • a deep well pump which includes pumping means, an intake section below and supported from said pumping means and a sealed type submersible motor substantially filled with oil supported by said intake section, said motor including a casing, a vertical shaft, a rotor, and a stator, said casing having a lower closure head including a depending sump, an upper head through which said shaft extends to driving engagement with said pumping means, and an in- 'termediate head dividing said easing into a motor section andan expansion section; said upper head including a seal surrounding said shaft and substantially hermetically sealing said casing; oil circulating means including a housing around said shaft carried by said intermediate head; a pump impeller secured on said shaft, disposed in and cooperating with said housing to form a centrifugal pump, said impeller having an intake facing and communicating through said head with said motor section, and said housing having a discharge opening in said expansion section; a tubular cooling coil disposed in the path of water drawn into and through said intake section by said pumping means, a tube communicating said discharge
  • a deep well pump which includes pumping means, an intake section below and supported from said pumping means and a sealed type submersible motor substantially filled with oil supported by said intake section, said motor including a casing, a vertical shaft, a rotor, and a stator, said casing having a lower closure head ineluding a depending sump, an upper head through which said shaft extends to driving engagement with said pumping means, and an intermediate head dividing saidcasing into a motor section and an expansion section; said upper head including a seal surrounding said shaft and substantially hermetically sealing said casing; oil circulating means including a housing around said shaft carried by said intermediate head; a pump impeller secured on said shaft, disposed in and cooperating with said housing to form a centrifugal pump, said impeller having an intake facing and communicating through said head with said motor section, and said housing having a discharge opening in said expansion section; a tubular cooling coil disposed in said intake section in the path of water drawn into and through said intake section by said pumping means, a tube
  • a deep well pump which includes pumping means, an intake section below and supported from said pumping means and a sealed type submersible motor substantially filled with oil supported by said intake section, said motor including a casing, a vertical shaft, a rotor, and a stator, said casing having a lower closure head, an upper head through which said shaft extends to driving engagement with said pumping means, and an intermediate head dividing said casing into a motor section and an expansion section; said upper head including a seal surrounding said shaft and substantially hermetically sealing said casing; said casing enclosing an oil pump carried by said intermediate head and driven by said shaft; said pump including an intake communieating with said motor section, and a discharge opening in said expansion section; a tubular cooling coil carried by said intake section in the path of water drawn into said intake section of said pumping means, a tube communicating said discharge opening with said coil, and a return tube communicating said coil into said seal; said shaft from said seal to its lower end, having a central bore and having openings communicating the interior of said motor
  • a deep well pump which includes pumping means, an intake section below and supported from said pumping means and a sealed type submersible motor substantially filled with oil supported by said intake section, said motor including a vertical shaft, a rotor and a stator,
  • a casing having a lower closure head including a depending sump, an upper head through which said shaft extends to driving engagement with said pumping means, and an intermediate head dividing said casing into a motor section and an expansion section; said upper head including a seal including axially spaced sealing rings surrounding said shaft and substantially hermetically sealing said casing; oil circulating means which includes a housing forming part of said intermediate head; a pump impeller secured on said shaft disposed in and cooperating with said housing to form a centrifugal pump, said impeller having an intake facing and communicating with said motor section, and said housing having a discharge opening in said expansion section; a tubular cooling coil disposed in said intake section, a tube communicating said discharge opening with one end of said coil, and a return tube communicating the opposite end of said coil into said seal; said shaft from said seal to its lower end having a central bore and having a lateral opening communicating the interior of said seal with said bore; said lower head having openings communicating said sump and said motor section, and an opening into said sump underlying said shaft
  • a submersible motor which includes a sealed oil filled casing and a vertical hollow shaft journalled in said casing; said casing having a closure head at its lower end, an upper head carrying a seal through which said shaft projects, and an intermediate head dividing said casing into motor and cooling chambers, a cylindrical rotor mounted on said shaft, and a casing carried annular stator around and separated from said rotor by an annular gap interconnecting upper and lower portions of said motor chamber; oil circulating means including a housing carried by said intermediate head, and having a discharge opening into said cooling chamber, an impeller mounted on said shaft and disposed in said housing, said impeller including an intake opening leading from the upper portion of said motor chamber, said seal including a shell having an opening therethrough into said cooling chamber, and said shaft having lateral openings from said seal into said hollow shaft.
  • a submersible motor which includes a sealed oil filled casing and a vertical hollow shaft journalled in said casing; said casing having a clo- Sure head at its lower end, an upper head carrying a seal through which said shaft projects, and an intermediate head dividing said easing into motor and cooling chambers, a cylindrical rotor mounted on said shaft, and a casing carried annular stator around and separated from said rotor by an annular gap interconnecting upper and lower portions of said motor chamber; oil
  • circulating means including a housing carried by said intermediate head, and having a discharge opening, a tube leading arcuately away from said opening and terminating in substantially tangential relation to the shell of said cooling chamber, an impeller mounted on said shaft and disposed in said housing, said impeller including an intake opening leading from the upper portion of said motor chamber, said seal including a shell having an opening therethrough into said cooling chamber, and said shaft having lateral openings from said seal into said hollow shaft.
  • a submersible motor which includes a sealed oil filled casing and a vertical hollow shaft journalled in said casing; said casing having a closure head at its lower end, an upper head carrying a seal through which said shaft projects, and an intermediate head dividing said casing into motor and cooling chambers, a cylindrical rotor mounted on said shaft, and a casing carried annular stator around and separated from said rotor by an annular gap interconnecting upper and lower portions of said motor chamber; oil circulating means including a housing carried by said intermediate head, and having a discharge opening into said cooling chamber, an impeller mounted on said shaft and disposed in said housing, said impeller including an intake opening leading from the upper portion of said motor chamber, said seal including a shell having an opening therethrough, a tube connected to said shell and leading from said opening upward to desired oil level in said cooling chamber, and said shaft having lateral openings from said seal into said hollow shaft.
  • a submersible motor which includes a sealed oil filled casing and a vertical hollow shaft journalled in said casing; said casing having a closure head at its lower end, an upper head carrying a seal through which said shaft projects, and an intermediate head dividing said casing into motor and cooling chambers, a cylindrical rotor mounted on said shaft, and a casing carried annular stator around and separated from said rotor by an annular gap interconnecting upper and lower portions of said motor chamber; oil circulating means including a housing carried by said intermediate head, and having a discharge opening, a tube leading arcuately away fromsaid opening and terminating in substantially tangential relation to the shell of said cooling chamber, an impeller mounted on said shaft and disposed in said housing, said impeller including an intake opening leading from the upper portion of said motor chamber, said seal including a. shell having an opening therethrough, a tube connected to said shell and leading from said opening upward to desired oil level in said cooling chamber, and said shaft having lateral openings from said seal into said hollow shaft.
  • a submersible motor which includes a sealed casing and a shaft journalled in said casing, said casing having a closure head at one end, an opposite head carrying a seal through which said shaft projects, and an intermediate head dividing said casing into motor and cooling chambers, a cylindrical rotor mounted on said shaft, and a casing carried annular stator around and separated from said rotor by an annular gap interconnecting opposite portions of said motor chamber; pumping means, within said casing, driven by said shaft, said means including an intake from said motor chamber adjacent said intermediate head and a discharge opening into said cooling chamher, said shaft extending from said seal carrying head to adjacency with said closure head, having a co-extensive bore and lateral openings into said bore adjacent said seal carrying head, said openings and said bore establishing return flow from said cooling chamber into said motor chamber adjacent said closure head.

Landscapes

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

Description

June 12, 1951 MQEHRL HAL 2,556,435
MEANS FOR COOLING LUBRICATING OIL IN SUBMERGED MOTORS Filed April 27, 1950 2 Sheets-Sheet 1 SUCTION NOZZLE 12% Z. 1 J //vm=ro e/5 tam 5r .e'. hoe/m4 65442158 8 P0 TER JR}.
June 12, 1951 K. E. MOEi-IRL ETAL 2,556,435
MEANS FOR COOLING LUBRICATING OIL IN SUBMERGED MOTORS Filed April 27, 1950 2 Sheets-Sheet 2 m rwrwP twwera 5, 8A1 61/44465 6. 752 J2 Patented June l2, 1951 MEANS FOR COOLIN G LUBRICATING OIL IN SUBMERGED MOTORS Kenneth E. Moehrl and Charles B. Porter, Jr., Memphis, Tenn., assignors to Layne & Bowler, Incorporated, Memphis, Tenn., a corporation of Delaware Application April 27, 1950, Serial No. 158,394
10 Claims.
This invention relates to means for cooling the lubricating oil used with submerged electric motors such as drive the centrifugal pumps largely used in deep well pumping.
In this type of pumping the motor is enclosed in a casing as nearly hermetically sealed as possible against inflow of water, and the casing around the motor is substantially filled with lubrieating oil, and is disposed below the pump with the motor shaft extending through a stufiing box or seal for connection to the pump, or if not so filled, every endeavor is used to divert the oil used in lubrication to the motor bearings, and away from the rotor and stator coils and away from the gap therebetween. The oil within the casing is often stagnant and becomes overheated, and even if circulated, provision is not made for cooling the oil and little or no provision is made for using the oil to cool the rotor and stator coils.
The objects of the present invention are to provide in an enclosed submergible motor, a motor casing substantially filled with lubricating oil, and to provide:
Means for circulating the oil within the motor casing;
Means for circulating the oil in the motor casing through the gap between the rotor and stator coils of the motor;
Means for withdrawing the oil from a sump below the motor and through the gap between the coils and for returning the oil to the sump;
Means for circulating the oil within the motor casing and cooling the oil; and
Means for circulating the oil within the motor casing, and from a sump below the coils, through the gap between the motor coils, cooling the oil and returning the oil to the sump by-passing the gap.
The means by which the foregoing and other objects of the invention are accomplished and the manner of their accomplishment will readily be understood from the following specification upon reference to the accompanying drawings, in which:
Fig. 1 is a sectional elevational view of an electric motor in accordance with our invention showing means for effecting oil circulation and cooling.
Fig. 2 is an elevational view on a smaller scale showing the motor casing and its relation to a tandem type deep well pump.
Fig. 3 is a sectional elevational view of a motor similar to that shown in Fig. 1 with a modified means for effecting the cooling of the oil; and
Fig. 4 is a sectional elevational view of a stuffing box and seal for the motor, showing the oil passage returning from the cooling means passing through the seal.
Fig. 5 is a sectional plan view taken as on the line VV of Fig. 3.
Referring now to the drawings in which the various parts are indicated by numerals: I2 are pump bowls connected in tandem, to form a multistage water pump used in deep well pumping. The bowls enclose pump impellers (not shown) which are driven by a shaft I I. The shaft i4 is a continuation of the shaft of a motor it, which motor is disposed below the pump bowls and connected to and supported from the lower of the bowls by an interposed strainer I8 and a suction nozzle I9, the strainer having wall slots or other openings 20 through which the water which is pumped enters the suction end of the bowls I2.
The motor I6 is of sealed type adapted for submergence and includes a casing which for construction, assembly, and access to the parts,
may be divided into a lower section II, an intermediate section HA, and a seal section IIB. The sections i'I, IiA and HE may be coupled together and secured to the strainer I8 by studs 22 and nuts 22A. The casing is closed at its lower end by a lower head 24, which supports the lower end of the shaft I4 through an annular bearing 26, an annular bearing retainer housing 21, and an annular bearing 28 which journal the shaft. The head 24 preferably includes a depending sump portion 24A which communicates with the casing through openings 2413.
The casing of the section I? is provided at its upper end with an inwardly extending annular flange 30, and the intermediate section IIA has an intermediate head portion 32 which seats on this flange. The head portion 32 has a downwardly extending cylindrical portion 32A which carries at its lower end an upper bearing 34 for the shaft I4. Above the bearing, openings 32B extend through the cylindrical portion 32A, and above these openings the head is chambered out concentrically around the shaft to receive and cooperate with an impeller 36 to form a pump for circulating oil. The impeller is secured to, and driven by, the shaft I4, the openings 32B communicating the section Il with the intake of the impeller.
The section I'IB includes an integral head which may comprise an inwardly extending annular flange 31, a downwardly continuing cylindrical wall portion 31A, and a central head portion 31B, terminating the cylindrical portion, the downwardly extending portion establishing with the casing wall an annular surge chamber 310. The head portion is chambered out concentrically around the shaft to receive an annular flange portion 38A of a seal 38. The flange portion 38A of the seal seats on a gasket 40 disposed in the chambered out central portion 313 of the head and is clamped against the gasket by an annular flange 42 secured by screws 42A. The shaft l4 continues through the seal 38 and upward through the strainer [8 to drive the pump impellers (not shown) in the bowls l2.
The oil pump impeller 36 discharges through a tube 44 to the upper coil 50 of a bank of coils 52 disposed in the strainer section 18 of the water pump. The oil delivered to the upper coil of the bank fiows downward through the coils and a connecting tube 54 into the seal 38 which is shown in sectional elevation in Fig. 4. The seal includes resilient annular sealing rings 56 which are disposed between annular shoes 58 and held in shaft contact by a coil spring 66 disposed between and bearing against the shoes and maintain an annular oil space 62 around the shaft, into which space the tube 54 discharges.
The shaft i l, at least from the seal level to its lower end, has a bore 64 which provides an oil passageway, and at the level of the annular space E2 of the seal has lateral openings 66 establishing communication between the annular space and the shaft passageway. At its lower end the passageway discharges through the axial opening 68 in the bearing retainer 2? into the sump 24A. The motor may be filled with oil through a filling opening Ill. The motor [6 includes an annular stator 12 which is carried by the casing section I1, and a rotor 14 which is mounted on and driven by the shaft 14, the rotor being externally cylindrical and separated from the stator by the usual gap 16, which is open both top and bottom and establishes a connecting passageway from the lower portion of the section I! to the upper portion thereof.
The coil 52 and other passageways, the sump 24A and the motor casing, to a level 31D about half the depth of the surge chamber 310, are filled with oil and the motor put in operation. During operation the oil pump impeller 36 draws oil from the motor chamber and sump 24A and discharges the oil through the tube 44 and the upper coil 50 from which it returns through the bank of tubes 52A.and the tube 54, seal 38 and bore 64 of the shaft, to the sump.
All oil drawn from below the stator-rotor level and the sump, must pass through the gap It between stator and rotor and effect cooling action on the coils. Thereafter the oil is forced through the coil 52, where it is subject to direct cooling action of the water drawn from the well through the strainer i8 into the pump. All the cooled oil returns to the sump and is drawn therefrom through the rotor-stator gap to promote cooling where most needed. Adequate bearing lubrication is also inherently provided by flooding of the bearings.
In Fig. 3 the structure, including the oil pump 36 and parts therebelow, are identical with those previously described and carry the same identifying numbers. 1
Above the pump level a single casing section C may be used, which section is of substantially greater depth than the corresponding two sections previously shown and has associated there'- I31A of correspondingly greater depth, establishing a relatively deep surge chamber [310 which acts as a cooling chamber.
The oil pump 36 discharges directly into the casing section 110. A return tube I54 leads from the surge chamber into the seal 38, which is substantially as shown in Fig. 4 and previously described, but is inverted as regards Fig. 4 to facilitate connection of the return pipe. In this form of the device, primary reliance for cooling of the oil is placed on contact of the oil with the wall of the casing section. Preferably the oil pump 36 discharges through a short discharge tube I56 which is arcuately curved to discharge substantially circumferentially around the casing wall and may be spiralled slightly upward. The motor section is coupled to the pump bowls through a strainer section which may be identical with the strainer section l8 of Fig. 2, or be a section H8 of modified shape as indicated in Fig. 3. In the claims the surge chamber 31C of Fig. 1, or [31C of Fig. 3 will be also referred to as an expansion or cooling chamber.
It will be understood that many of the details of construction of the motor section, as evidenced by differences in detail of the sections shown in Fig. 1 and Fig. 3, may be varied without departing from the spirit of our invention, and that except where a detail is definitely set out in any claim or claims such detail may not be read into such claim or claims.
We claim:
1. In a deep well pump which includes pumping means, an intake section below and supported from said pumping means and a sealed type submersible motor substantially filled with oil supported by said intake section, said motor including a casing, a vertical shaft, a rotor, and a stator, said casing having a lower closure head including a depending sump, an upper head through which said shaft extends to driving engagement with said pumping means, and an intermediate head dividing said casing into a motor section and an expansion section; said upper head including a seal surrounding said shaft and substantially hermetically sealing said casing; oil circulatin means including a housing formed in said intermediate head around said shaft; a pump impeller secured on said shaft, disposed in and cooperating with said housing to form a centrifugal pump, said impeller having an intake facing and communicating through said intermedi ate head with said motor section, and said housing having a discharge opening in said expansion section; a tubular cooling coil disposed in said intake section, a tube communicating said discharge opening with said coil, and a return tube communicating said coil into said seal; said shaft from said seal to its lower end, having a central bore and having openings communicating the interior of said seal with said bore; said lower head having a central opening into said sump underlying said shaft bore and additional openings communicating said sump and motor section.
2. In a deep well pump which includes pumping means, an intake section below and supported from said pumping means and a sealed type submersible motor substantially filled with oil supported by said intake section, said motor including a casing, a vertical shaft, a rotor, and a stator, said casing having a lower closure head including a depending sump, an upper head through which said shaft extends to driving engagement with said pumping means, and an in- 'termediate head dividing said easing into a motor section andan expansion section; said upper head including a seal surrounding said shaft and substantially hermetically sealing said casing; oil circulating means including a housing around said shaft carried by said intermediate head; a pump impeller secured on said shaft, disposed in and cooperating with said housing to form a centrifugal pump, said impeller having an intake facing and communicating through said head with said motor section, and said housing having a discharge opening in said expansion section; a tubular cooling coil disposed in the path of water drawn into and through said intake section by said pumping means, a tube communicating said discharge opening with said coil, and a return tube communicating said coil into said seal; said shaft from said seal to its lower end,
having a central bore and having openings communicating the interior of said seal with said bore; said lower head having a central opening into said sump underlying said shaft bore and additional openings communicating said sump and motor section.
3. In a deep well pump which includes pumping means, an intake section below and supported from said pumping means and a sealed type submersible motor substantially filled with oil supported by said intake section, said motor including a casing, a vertical shaft, a rotor, and a stator, said casing having a lower closure head ineluding a depending sump, an upper head through which said shaft extends to driving engagement with said pumping means, and an intermediate head dividing saidcasing into a motor section and an expansion section; said upper head including a seal surrounding said shaft and substantially hermetically sealing said casing; oil circulating means including a housing around said shaft carried by said intermediate head; a pump impeller secured on said shaft, disposed in and cooperating with said housing to form a centrifugal pump, said impeller having an intake facing and communicating through said head with said motor section, and said housing having a discharge opening in said expansion section; a tubular cooling coil disposed in said intake section in the path of water drawn into and through said intake section by said pumping means, a tube communicating said discharge opening with said coil, and a return tube communicating said coil into said seal; said shaft from said seal to its lower end, having a central bore and having openings communicating the interior of said seal with said bore; said lower head having a central opening into said sump underlying said shaft bore and additional openings communicating said sump and motor section.
4. In a deep well pump which includes pumping means, an intake section below and supported from said pumping means and a sealed type submersible motor substantially filled with oil supported by said intake section, said motor including a casing, a vertical shaft, a rotor, and a stator, said casing having a lower closure head, an upper head through which said shaft extends to driving engagement with said pumping means, and an intermediate head dividing said casing into a motor section and an expansion section; said upper head including a seal surrounding said shaft and substantially hermetically sealing said casing; said casing enclosing an oil pump carried by said intermediate head and driven by said shaft; said pump including an intake communieating with said motor section, and a discharge opening in said expansion section; a tubular cooling coil carried by said intake section in the path of water drawn into said intake section of said pumping means, a tube communicating said discharge opening with said coil, and a return tube communicating said coil into said seal; said shaft from said seal to its lower end, having a central bore and having openings communicating the interior of said seal with said bore; said lower head having openings communicating said shaft bore and said motor section.
5. In a deep well pump which includes pumping means, an intake section below and supported from said pumping means and a sealed type submersible motor substantially filled with oil supported by said intake section, said motor including a vertical shaft, a rotor and a stator,
and a casing having a lower closure head including a depending sump, an upper head through which said shaft extends to driving engagement with said pumping means, and an intermediate head dividing said casing into a motor section and an expansion section; said upper head including a seal including axially spaced sealing rings surrounding said shaft and substantially hermetically sealing said casing; oil circulating means which includes a housing forming part of said intermediate head; a pump impeller secured on said shaft disposed in and cooperating with said housing to form a centrifugal pump, said impeller having an intake facing and communicating with said motor section, and said housing having a discharge opening in said expansion section; a tubular cooling coil disposed in said intake section, a tube communicating said discharge opening with one end of said coil, and a return tube communicating the opposite end of said coil into said seal; said shaft from said seal to its lower end having a central bore and having a lateral opening communicating the interior of said seal with said bore; said lower head having openings communicating said sump and said motor section, and an opening into said sump underlying said shaft bore.
6. A submersible motor which includes a sealed oil filled casing and a vertical hollow shaft journalled in said casing; said casing having a closure head at its lower end, an upper head carrying a seal through which said shaft projects, and an intermediate head dividing said casing into motor and cooling chambers, a cylindrical rotor mounted on said shaft, and a casing carried annular stator around and separated from said rotor by an annular gap interconnecting upper and lower portions of said motor chamber; oil circulating means including a housing carried by said intermediate head, and having a discharge opening into said cooling chamber, an impeller mounted on said shaft and disposed in said housing, said impeller including an intake opening leading from the upper portion of said motor chamber, said seal including a shell having an opening therethrough into said cooling chamber, and said shaft having lateral openings from said seal into said hollow shaft.
'7. A submersible motor which includes a sealed oil filled casing and a vertical hollow shaft journalled in said casing; said casing having a clo- Sure head at its lower end, an upper head carrying a seal through which said shaft projects, and an intermediate head dividing said easing into motor and cooling chambers, a cylindrical rotor mounted on said shaft, and a casing carried annular stator around and separated from said rotor by an annular gap interconnecting upper and lower portions of said motor chamber; oil
circulating means including a housing carried by said intermediate head, and having a discharge opening, a tube leading arcuately away from said opening and terminating in substantially tangential relation to the shell of said cooling chamber, an impeller mounted on said shaft and disposed in said housing, said impeller including an intake opening leading from the upper portion of said motor chamber, said seal including a shell having an opening therethrough into said cooling chamber, and said shaft having lateral openings from said seal into said hollow shaft.
8. A submersible motor which includes a sealed oil filled casing and a vertical hollow shaft journalled in said casing; said casing having a closure head at its lower end, an upper head carrying a seal through which said shaft projects, and an intermediate head dividing said casing into motor and cooling chambers, a cylindrical rotor mounted on said shaft, and a casing carried annular stator around and separated from said rotor by an annular gap interconnecting upper and lower portions of said motor chamber; oil circulating means including a housing carried by said intermediate head, and having a discharge opening into said cooling chamber, an impeller mounted on said shaft and disposed in said housing, said impeller including an intake opening leading from the upper portion of said motor chamber, said seal including a shell having an opening therethrough, a tube connected to said shell and leading from said opening upward to desired oil level in said cooling chamber, and said shaft having lateral openings from said seal into said hollow shaft.
9. A submersible motor which includes a sealed oil filled casing and a vertical hollow shaft journalled in said casing; said casing having a closure head at its lower end, an upper head carrying a seal through which said shaft projects, and an intermediate head dividing said casing into motor and cooling chambers, a cylindrical rotor mounted on said shaft, and a casing carried annular stator around and separated from said rotor by an annular gap interconnecting upper and lower portions of said motor chamber; oil circulating means including a housing carried by said intermediate head, and having a discharge opening, a tube leading arcuately away fromsaid opening and terminating in substantially tangential relation to the shell of said cooling chamber, an impeller mounted on said shaft and disposed in said housing, said impeller including an intake opening leading from the upper portion of said motor chamber, said seal including a. shell having an opening therethrough, a tube connected to said shell and leading from said opening upward to desired oil level in said cooling chamber, and said shaft having lateral openings from said seal into said hollow shaft.
10. A submersible motor which includes a sealed casing and a shaft journalled in said casing, said casing having a closure head at one end, an opposite head carrying a seal through which said shaft projects, and an intermediate head dividing said casing into motor and cooling chambers, a cylindrical rotor mounted on said shaft, and a casing carried annular stator around and separated from said rotor by an annular gap interconnecting opposite portions of said motor chamber; pumping means, within said casing, driven by said shaft, said means including an intake from said motor chamber adjacent said intermediate head and a discharge opening into said cooling chamher, said shaft extending from said seal carrying head to adjacency with said closure head, having a co-extensive bore and lateral openings into said bore adjacent said seal carrying head, said openings and said bore establishing return flow from said cooling chamber into said motor chamber adjacent said closure head.
KENNETH E, MOEHRL. CHARLES B. PORTER, JR.
REFERENCES CITED The following references are of record in the file of this patent:
UNITED STATES PATENTS Number Name Date 1,968,566 Moran July 31, 1934 2,002,916 Mendenhall May 28, 1935 2,043,236 Conant June 9, 1936 2,280,087 Hollander Apr. 21, 1942 FOREIGN PATENTS Number Country Date 544,930 Great Britain May 4, 1942
US158394A 1950-04-27 1950-04-27 Means for cooling lubricating oil in submerged motors Expired - Lifetime US2556435A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
US158394A US2556435A (en) 1950-04-27 1950-04-27 Means for cooling lubricating oil in submerged motors

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US158394A US2556435A (en) 1950-04-27 1950-04-27 Means for cooling lubricating oil in submerged motors

Publications (1)

Publication Number Publication Date
US2556435A true US2556435A (en) 1951-06-12

Family

ID=22567901

Family Applications (1)

Application Number Title Priority Date Filing Date
US158394A Expired - Lifetime US2556435A (en) 1950-04-27 1950-04-27 Means for cooling lubricating oil in submerged motors

Country Status (1)

Country Link
US (1) US2556435A (en)

Cited By (58)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2695070A (en) * 1951-05-26 1954-11-23 Gen Motors Corp Submerged motor-driven pump and fluid pressure system for variable pitch propellers
US2942555A (en) * 1957-04-15 1960-06-28 Rinaldo F Pezzillo Combination pump and motor
US2952787A (en) * 1953-09-08 1960-09-13 Moore Co Motor for contra rotating fans
US2964659A (en) * 1957-01-30 1960-12-13 Westinghouse Electric Corp Regenerative cold trap and electric motor cooled thereby
US2965038A (en) * 1957-06-03 1960-12-20 Lucas Industries Ltd Rotary fuel pumps
US3163790A (en) * 1961-11-10 1964-12-29 Fostoria Corp Motor driven pumps
US3209818A (en) * 1961-05-15 1965-10-05 Westinghouse Electric Corp Thermal barrier
US3220352A (en) * 1962-12-03 1965-11-30 Atkinson Guy F Co Pump lubrication system
US3267868A (en) * 1963-11-13 1966-08-23 Barnes Mfg Co Electric motor with plural cooling paths through the shaft
US3306074A (en) * 1965-03-01 1967-02-28 Pall Corp Self-cooling canned pump and refrigeration system containing the same
DE1270160B (en) * 1964-06-12 1968-06-12 Lederle Pumpen & Maschf Electric motor driven pump
US3432704A (en) * 1966-08-04 1969-03-11 Arthur J Nelson Submergible apparatus motor drive
US3441762A (en) * 1966-03-31 1969-04-29 Emerson Electric Co Demountable vertical pump motor with reducer gear,heat exchanger,and lubrication system
US4281973A (en) * 1978-02-09 1981-08-04 Gaetano Meneghello Case structure for rotary machines
FR2480869A1 (en) * 1980-04-19 1981-10-23 Klein Schanzlin & Becker Ag Submersible pump with gear drive - has integral oil pump with discharge and overflow arranged to control level during operation
US4488855A (en) * 1982-12-27 1984-12-18 The Trane Company Main bearing lubrication system for scroll machine
US4577128A (en) * 1980-12-11 1986-03-18 Northern Engineering Industries, Plc Induction motors
US4597720A (en) * 1979-07-26 1986-07-01 Friedrichs Ingo H Cleaning apparatus for the wet cleaning of building walls and floors, swimming pools, automobiles and the like
AT383233B (en) * 1984-06-26 1987-06-10 Haeupl Johann ELECTRIC MOTOR WITH A LIQUID-TIGHT HOUSING
US4685867A (en) * 1978-09-22 1987-08-11 Borg-Warner Corporation Submersible motor-pump
US4854829A (en) * 1987-03-16 1989-08-08 Franco Stanzani Structure for motor-compressor units used with refrigerant fluids
DE3635297C1 (en) * 1986-10-16 1993-03-25 Klaus Walzel Outrunner motor
WO1994004827A1 (en) * 1992-08-19 1994-03-03 Bw/Ip International, Inc. Multi-stage centrifugal pump incorporating a sealed thrust bearing
US5293929A (en) * 1992-02-21 1994-03-15 Smith Roger D Cooling apparatus for machine parts such as pump seals
US6206093B1 (en) 1999-02-24 2001-03-27 Camco International Inc. System for pumping viscous fluid from a well
US6318467B1 (en) 1999-12-01 2001-11-20 Camco International, Inc. System and method for pumping and heating viscous fluids in a wellbore
WO2006026694A1 (en) * 2004-08-31 2006-03-09 Siemens Energy & Automation, Inc. Method for maintaining a vertical motor thrust bearing
US20060093250A1 (en) * 2004-08-31 2006-05-04 Scott Kreitzer System for maintaining a vertical motor thrust bearing
US20080023177A1 (en) * 2006-06-19 2008-01-31 Timothy Hassett Electric motor with heat pipes
WO2008014556A1 (en) * 2006-08-03 2008-02-07 Richard David Davies Electric pump-motor design
US20090178803A1 (en) * 2008-01-16 2009-07-16 Baker Hughes Incorporated Method of heating sub sea esp pumping system
US20090269224A1 (en) * 2008-04-29 2009-10-29 Daniel Francis Alan Hunt Submersible pumping system with heat transfer mechanism
US20100026109A1 (en) * 2006-06-19 2010-02-04 Thermal Motor Innovations, Llc Electric motor with heat pipes
US20100026108A1 (en) * 2006-06-19 2010-02-04 Thermal Motor Innovations, Llc Electric motor with heat pipes
US20100033042A1 (en) * 2008-08-06 2010-02-11 Thermal Motor Innovations , LLC Totally enclosed heat pipe cooled motor
US20100051260A1 (en) * 2008-09-04 2010-03-04 Halliburton Energy Services, Inc. Fluid Isolating Pressure Equalization in Subterranean Well Tools
US20100102648A1 (en) * 2008-10-24 2010-04-29 Baker Hughes Incorporated Enhanced thermal conductivity material in annular gap between electrical motor stator and housing
US20100143160A1 (en) * 2008-12-08 2010-06-10 Baker Hughes Incorporated Submersible pump motor cooling through external oil circulation
US20100150739A1 (en) * 2008-12-16 2010-06-17 Baker Hughes Inc. Heat transfer through the electrical submersible pump
US20100329908A1 (en) * 2009-06-29 2010-12-30 Baker Hughes Incorporated Heat exchanger for esp motor
WO2011019334A1 (en) * 2009-08-11 2011-02-17 General Electric Company Permanent magnet motor for subsea pump drive
US8708675B2 (en) 2009-06-29 2014-04-29 Baker Hughes Incorporated Systems and methods of using subsea frames as a heat exchanger in subsea boosting systems
US20150064026A1 (en) * 2013-09-03 2015-03-05 Dresser-Rand Company Motor cooling system manifold
US9010448B2 (en) 2011-04-12 2015-04-21 Halliburton Energy Services, Inc. Safety valve with electrical actuator and tubing pressure balancing
US9016387B2 (en) 2011-04-12 2015-04-28 Halliburton Energy Services, Inc. Pressure equalization apparatus and associated systems and methods
US9068425B2 (en) 2011-04-12 2015-06-30 Halliburton Energy Services, Inc. Safety valve with electrical actuator and tubing pressure balancing
US20160032931A1 (en) * 2014-07-29 2016-02-04 Hyundai Motor Company Cooling unit of air compressor for fuel cell vehicle
US20160097392A1 (en) * 2014-10-07 2016-04-07 General Electric Company Pump assembly for appliance
US9359822B2 (en) 2011-12-14 2016-06-07 Halliburton Energy Services, Inc. Floating plug pressure equalization in oilfield drill bits
US20180038210A1 (en) * 2013-06-24 2018-02-08 Saudi Arabian Oil Company Integrated Pump and Compressor and Method of Producing Multiphase Well Fluid Downhole and at Surface
US11187317B2 (en) * 2017-09-07 2021-11-30 Zf Friedrichshafen Ag Vehicle transmission
US11371326B2 (en) 2020-06-01 2022-06-28 Saudi Arabian Oil Company Downhole pump with switched reluctance motor
US11499563B2 (en) 2020-08-24 2022-11-15 Saudi Arabian Oil Company Self-balancing thrust disk
US11591899B2 (en) 2021-04-05 2023-02-28 Saudi Arabian Oil Company Wellbore density meter using a rotor and diffuser
US11644351B2 (en) 2021-03-19 2023-05-09 Saudi Arabian Oil Company Multiphase flow and salinity meter with dual opposite handed helical resonators
US11913464B2 (en) 2021-04-15 2024-02-27 Saudi Arabian Oil Company Lubricating an electric submersible pump
US11920469B2 (en) 2020-09-08 2024-03-05 Saudi Arabian Oil Company Determining fluid parameters
US11994016B2 (en) 2021-12-09 2024-05-28 Saudi Arabian Oil Company Downhole phase separation in deviated wells

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1968566A (en) * 1932-11-05 1934-07-31 Continental Oil Co Pump assembly
US2002916A (en) * 1934-04-16 1935-05-28 Menborn Inc Submersible motor construction
US2043236A (en) * 1934-06-01 1936-06-09 David J Conant Submergible motor
US2280087A (en) * 1940-04-24 1942-04-21 Byron Jackson Co Pumping apparatus
GB544930A (en) * 1940-11-11 1942-05-04 Hayward Tyler & Company Ltd Improvements in or relating to the pumping of fluids under high pressures

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1968566A (en) * 1932-11-05 1934-07-31 Continental Oil Co Pump assembly
US2002916A (en) * 1934-04-16 1935-05-28 Menborn Inc Submersible motor construction
US2043236A (en) * 1934-06-01 1936-06-09 David J Conant Submergible motor
US2280087A (en) * 1940-04-24 1942-04-21 Byron Jackson Co Pumping apparatus
GB544930A (en) * 1940-11-11 1942-05-04 Hayward Tyler & Company Ltd Improvements in or relating to the pumping of fluids under high pressures

Cited By (86)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2695070A (en) * 1951-05-26 1954-11-23 Gen Motors Corp Submerged motor-driven pump and fluid pressure system for variable pitch propellers
US2952787A (en) * 1953-09-08 1960-09-13 Moore Co Motor for contra rotating fans
US2964659A (en) * 1957-01-30 1960-12-13 Westinghouse Electric Corp Regenerative cold trap and electric motor cooled thereby
US2942555A (en) * 1957-04-15 1960-06-28 Rinaldo F Pezzillo Combination pump and motor
US2965038A (en) * 1957-06-03 1960-12-20 Lucas Industries Ltd Rotary fuel pumps
US3209818A (en) * 1961-05-15 1965-10-05 Westinghouse Electric Corp Thermal barrier
US3163790A (en) * 1961-11-10 1964-12-29 Fostoria Corp Motor driven pumps
US3220352A (en) * 1962-12-03 1965-11-30 Atkinson Guy F Co Pump lubrication system
US3267868A (en) * 1963-11-13 1966-08-23 Barnes Mfg Co Electric motor with plural cooling paths through the shaft
DE1270160B (en) * 1964-06-12 1968-06-12 Lederle Pumpen & Maschf Electric motor driven pump
US3306074A (en) * 1965-03-01 1967-02-28 Pall Corp Self-cooling canned pump and refrigeration system containing the same
US3441762A (en) * 1966-03-31 1969-04-29 Emerson Electric Co Demountable vertical pump motor with reducer gear,heat exchanger,and lubrication system
US3432704A (en) * 1966-08-04 1969-03-11 Arthur J Nelson Submergible apparatus motor drive
US4281973A (en) * 1978-02-09 1981-08-04 Gaetano Meneghello Case structure for rotary machines
US4685867A (en) * 1978-09-22 1987-08-11 Borg-Warner Corporation Submersible motor-pump
US4597720A (en) * 1979-07-26 1986-07-01 Friedrichs Ingo H Cleaning apparatus for the wet cleaning of building walls and floors, swimming pools, automobiles and the like
FR2480869A1 (en) * 1980-04-19 1981-10-23 Klein Schanzlin & Becker Ag Submersible pump with gear drive - has integral oil pump with discharge and overflow arranged to control level during operation
US4577128A (en) * 1980-12-11 1986-03-18 Northern Engineering Industries, Plc Induction motors
US4488855A (en) * 1982-12-27 1984-12-18 The Trane Company Main bearing lubrication system for scroll machine
AT383233B (en) * 1984-06-26 1987-06-10 Haeupl Johann ELECTRIC MOTOR WITH A LIQUID-TIGHT HOUSING
DE3635297C1 (en) * 1986-10-16 1993-03-25 Klaus Walzel Outrunner motor
US4854829A (en) * 1987-03-16 1989-08-08 Franco Stanzani Structure for motor-compressor units used with refrigerant fluids
US5293929A (en) * 1992-02-21 1994-03-15 Smith Roger D Cooling apparatus for machine parts such as pump seals
WO1994004827A1 (en) * 1992-08-19 1994-03-03 Bw/Ip International, Inc. Multi-stage centrifugal pump incorporating a sealed thrust bearing
US5340272A (en) * 1992-08-19 1994-08-23 Bw/Ip International, Inc. Multi-stage centrifugal pump incorporating a sealed thrust bearing
US6206093B1 (en) 1999-02-24 2001-03-27 Camco International Inc. System for pumping viscous fluid from a well
US6318467B1 (en) 1999-12-01 2001-11-20 Camco International, Inc. System and method for pumping and heating viscous fluids in a wellbore
US7849970B2 (en) * 2004-08-31 2010-12-14 Siemens Industry, Inc. Method for maintaining a vertical motor thrust bearing
US20060093250A1 (en) * 2004-08-31 2006-05-04 Scott Kreitzer System for maintaining a vertical motor thrust bearing
US20060093248A1 (en) * 2004-08-31 2006-05-04 Scott Kreitzer Method for maintaining a vertical motor thrust bearing
WO2006026694A1 (en) * 2004-08-31 2006-03-09 Siemens Energy & Automation, Inc. Method for maintaining a vertical motor thrust bearing
US7815374B2 (en) 2004-08-31 2010-10-19 Siemens Industry, Inc. System for maintaining a vertical motor thrust bearing
US7569955B2 (en) 2006-06-19 2009-08-04 Thermal Motor Innovations, Llc Electric motor with heat pipes
US20100026109A1 (en) * 2006-06-19 2010-02-04 Thermal Motor Innovations, Llc Electric motor with heat pipes
US20100026108A1 (en) * 2006-06-19 2010-02-04 Thermal Motor Innovations, Llc Electric motor with heat pipes
US8283818B2 (en) 2006-06-19 2012-10-09 Hpev, Inc. Electric motor with heat pipes
US8134260B2 (en) 2006-06-19 2012-03-13 Hpev, Inc. Electric motor with heat pipes
US20080023177A1 (en) * 2006-06-19 2008-01-31 Timothy Hassett Electric motor with heat pipes
WO2008014556A1 (en) * 2006-08-03 2008-02-07 Richard David Davies Electric pump-motor design
US8037936B2 (en) * 2008-01-16 2011-10-18 Baker Hughes Incorporated Method of heating sub sea ESP pumping system
US20090178803A1 (en) * 2008-01-16 2009-07-16 Baker Hughes Incorporated Method of heating sub sea esp pumping system
US8696334B2 (en) 2008-04-29 2014-04-15 Chevron U.S.A. Inc. Submersible pumping system with heat transfer mechanism
US20090269224A1 (en) * 2008-04-29 2009-10-29 Daniel Francis Alan Hunt Submersible pumping system with heat transfer mechanism
US20140147310A1 (en) * 2008-04-29 2014-05-29 Los Alamos National Security Submersible pumping system with heat transfer mechanism
US20100033042A1 (en) * 2008-08-06 2010-02-11 Thermal Motor Innovations , LLC Totally enclosed heat pipe cooled motor
US8148858B2 (en) 2008-08-06 2012-04-03 Hpev, Inc. Totally enclosed heat pipe cooled motor
US8567506B2 (en) * 2008-09-04 2013-10-29 Halliburton Energy Services, Inc. Fluid isolating pressure equalization in subterranean well tools
US20100051260A1 (en) * 2008-09-04 2010-03-04 Halliburton Energy Services, Inc. Fluid Isolating Pressure Equalization in Subterranean Well Tools
US20100102648A1 (en) * 2008-10-24 2010-04-29 Baker Hughes Incorporated Enhanced thermal conductivity material in annular gap between electrical motor stator and housing
US8358043B2 (en) 2008-10-24 2013-01-22 Baker Hughes Incorporated Enhanced thermal conductivity material in annular gap between electrical motor stator and housing
US8696327B2 (en) 2008-12-08 2014-04-15 Baker Hughes Incorporated Submersible pump motor cooling through external oil circulation
US20100143160A1 (en) * 2008-12-08 2010-06-10 Baker Hughes Incorporated Submersible pump motor cooling through external oil circulation
DE112009003640B4 (en) 2008-12-08 2018-12-13 Baker-Hughes Inc. Improved submersible pump cooling through external oil circulation
US9109609B2 (en) * 2008-12-08 2015-08-18 Baker Hughes Incorporated Submersible pump motor cooling through external oil circulation
US20100150739A1 (en) * 2008-12-16 2010-06-17 Baker Hughes Inc. Heat transfer through the electrical submersible pump
US8435015B2 (en) 2008-12-16 2013-05-07 Baker Hughes Incorporated Heat transfer through the electrical submersible pump
US8708675B2 (en) 2009-06-29 2014-04-29 Baker Hughes Incorporated Systems and methods of using subsea frames as a heat exchanger in subsea boosting systems
US20100329908A1 (en) * 2009-06-29 2010-12-30 Baker Hughes Incorporated Heat exchanger for esp motor
US8740586B2 (en) 2009-06-29 2014-06-03 Baker Hughes Incorporated Heat exchanger for ESP motor
CN102472286A (en) * 2009-08-11 2012-05-23 通用电气公司 Permanent magnet motor for subsea pump drive
WO2011019334A1 (en) * 2009-08-11 2011-02-17 General Electric Company Permanent magnet motor for subsea pump drive
US9574423B2 (en) 2011-04-12 2017-02-21 Halliburton Energy Services, Inc. Safety valve with electrical actuator and tubing pressure balancing
US9010448B2 (en) 2011-04-12 2015-04-21 Halliburton Energy Services, Inc. Safety valve with electrical actuator and tubing pressure balancing
US9016387B2 (en) 2011-04-12 2015-04-28 Halliburton Energy Services, Inc. Pressure equalization apparatus and associated systems and methods
US9068425B2 (en) 2011-04-12 2015-06-30 Halliburton Energy Services, Inc. Safety valve with electrical actuator and tubing pressure balancing
US10107050B2 (en) 2011-04-12 2018-10-23 Halliburton Energy Services, Inc. Pressure equalization apparatus and associated systems and methods
US9359822B2 (en) 2011-12-14 2016-06-07 Halliburton Energy Services, Inc. Floating plug pressure equalization in oilfield drill bits
US11162340B2 (en) 2013-06-24 2021-11-02 Saudi Arabian Oil Company Integrated pump and compressor and method of producing multiphase well fluid downhole and at surface
US20180038210A1 (en) * 2013-06-24 2018-02-08 Saudi Arabian Oil Company Integrated Pump and Compressor and Method of Producing Multiphase Well Fluid Downhole and at Surface
US10677031B2 (en) * 2013-06-24 2020-06-09 Saudi Arabian Oil Company Integrated pump and compressor and method of producing multiphase well fluid downhole and at surface
US9777746B2 (en) * 2013-09-03 2017-10-03 Dresser-Rand Company Motor cooling system manifold
US20150064026A1 (en) * 2013-09-03 2015-03-05 Dresser-Rand Company Motor cooling system manifold
US9863430B2 (en) * 2014-07-29 2018-01-09 Hyundai Motor Company Cooling unit of air compressor for fuel cell vehicle
US20160032931A1 (en) * 2014-07-29 2016-02-04 Hyundai Motor Company Cooling unit of air compressor for fuel cell vehicle
US9752583B2 (en) * 2014-10-07 2017-09-05 Haier Us Appliance Solutions, Inc. Pump assembly for appliance
US20160097392A1 (en) * 2014-10-07 2016-04-07 General Electric Company Pump assembly for appliance
US11187317B2 (en) * 2017-09-07 2021-11-30 Zf Friedrichshafen Ag Vehicle transmission
US20220082168A1 (en) * 2017-09-07 2022-03-17 Zf Friedrichshafen Ag Vehicle Transmission
US11674591B2 (en) * 2017-09-07 2023-06-13 Zf Friedrichshafen Ag Vehicle transmission
US11371326B2 (en) 2020-06-01 2022-06-28 Saudi Arabian Oil Company Downhole pump with switched reluctance motor
US11499563B2 (en) 2020-08-24 2022-11-15 Saudi Arabian Oil Company Self-balancing thrust disk
US11920469B2 (en) 2020-09-08 2024-03-05 Saudi Arabian Oil Company Determining fluid parameters
US11644351B2 (en) 2021-03-19 2023-05-09 Saudi Arabian Oil Company Multiphase flow and salinity meter with dual opposite handed helical resonators
US11591899B2 (en) 2021-04-05 2023-02-28 Saudi Arabian Oil Company Wellbore density meter using a rotor and diffuser
US11913464B2 (en) 2021-04-15 2024-02-27 Saudi Arabian Oil Company Lubricating an electric submersible pump
US11994016B2 (en) 2021-12-09 2024-05-28 Saudi Arabian Oil Company Downhole phase separation in deviated wells

Similar Documents

Publication Publication Date Title
US2556435A (en) Means for cooling lubricating oil in submerged motors
US3653785A (en) Pump unit
US2369440A (en) Self-lubricated and cooled pump and motor assembly
US2925041A (en) Pump and driving motor unit
US3267868A (en) Electric motor with plural cooling paths through the shaft
US2107481A (en) Water cooled motor
GB1349389A (en) Submersible motor and seal section
US2784672A (en) Fluid pump drive
US1974183A (en) Pump
US3704078A (en) Deep well type pump
US2470563A (en) Pump
US2875694A (en) Motor driven pumps
GB1320841A (en) Motor driven pump
US5700138A (en) Centrifugal pump
US2043236A (en) Submergible motor
US3454213A (en) Pedestal-supported encapsulated refrigerant motor-compressor unit
US1363315A (en) Rotary pump
US1531724A (en) Electric machine
US3170407A (en) Motor-pump unit
US1949796A (en) Pump or impeller
US2735026A (en) moerk
US3195468A (en) Submersible pump
US2001649A (en) Submergible electric motor
US2468187A (en) Electric fuel pump
US2827855A (en) Pump drive mechanism