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公开(公告)号：US10458240B2
公开(公告)日：2019-10-29
申请号：US15234595
申请日：2016-08-11
申请人： Roper Pump Company
摘要： A hybrid elastomer/metal on metal motor for a helical gear device includes a rotor and stator comprising a hydraulic motor that produces work when a working fluid is pumped therethrough. The improvement involves the stator being, for part of its length, a conventional or even wall stator, using an elastomer to form a seal against the moving rotor. The stator's remaining length comprises a profiled rigid surface that forms a seal directly with the moving rotor. This gives the motor the high efficiency of the elastomer sealing against the rotor, and simultaneously provides a backup of the stator's rigid section allowing continued motor operation at reduced efficiency, if the elastomer part failed in service. The invention also includes combinations of a regular disk stack with a rubber lining, a rigid material disk stack (or unitized element) and a circular rigid sleeve which react to rotor sideloading while permitting proper rotor orbiting.
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公开(公告)号：US20210180593A1
公开(公告)日：2021-06-17
申请号：US17120803
申请日：2020-12-14
申请人： Roper Pump Company
摘要： A semi-rigid stator is provided for a helical gear device. The stator includes a stack of rigid rings, a deformable layer, and a rigid housing. Each of the rigid rings has a central opening and an exterior surface. The rigid rings are aligned along a common centerline and rotated slightly relative to each other such that the stack of rigid rings forms a helically convoluted chamber. Each of the rigid rings is secured within the rigid stator housing by the deformable layer disposed between the exterior surface of each of the rigid rings and the rigid housing. The deformable layer bonds the rigid rings together as the ring stack and permits movement of the rigid rings relative to each other.
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公开(公告)号：US10968699B2
公开(公告)日：2021-04-06
申请号：US15601193
申请日：2017-05-22
申请人： Roper Pump Company
IPC分类号： F01C1/10 , F03C2/00 , F03C4/00 , F04C2/00 , E21B4/02 , F04C2/107 , F01C21/02 , F04C13/00 , F04C2/08
摘要： A fluid displacement apparatus includes a stator section with a rotor therein. The stator section includes a cylindrical casing, a helically-convoluted chamber section within the cylindrical casing, and a rigid sleeve within the cylindrical casing and separate from the helically-convoluted chamber section. The rigid sleeve includes a circular internal bore. The rotor is rotatably disposed within the cylindrical casing. The rotor includes a helically-lobed section disposed within the helically-convoluted chamber section, and a circular cylinder section disposed within the rigid sleeve. The circular cylinder section provides a fluid passageway between the rigid sleeve and the circular cylinder section. Side loads from the rotor are distributed along a contact line at any point of rotation of the circular cylinder section within the rigid sleeve.
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公开(公告)号：US20180223598A1
公开(公告)日：2018-08-09
申请号：US15601193
申请日：2017-05-22
申请人： Roper Pump Company
CPC分类号： E21B4/02 , F01C21/02 , F04C2/08 , F04C2/107 , F04C2/1071 , F04C2/1075 , F04C13/008 , F04C2230/10 , F04C2230/23 , F04C2230/60 , F04C2230/80 , F04C2230/90 , F04C2240/50 , F04C2240/56 , F04C2240/60 , F04C2240/605
摘要： A fluid displacement apparatus includes a stator section with a rotor therein. The stator section includes a cylindrical casing, a helically-convoluted chamber section within the cylindrical casing, and a rigid sleeve within the cylindrical casing and separate from the helically-convoluted chamber section. The rigid sleeve includes a circular internal bore. The rotor is rotatably disposed within the cylindrical casing. The rotor includes a helically-lobed section disposed within the helically-convoluted chamber section, and a circular cylinder section disposed within the rigid sleeve. The circular cylinder section provides a fluid passageway between the rigid sleeve and the circular cylinder section. Side loads from the rotor are distributed along a contact line at any point of rotation of the circular cylinder section within the rigid sleeve.
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公开(公告)号：US20240247655A1
公开(公告)日：2024-07-25
申请号：US18410029
申请日：2024-01-11
CPC分类号： F04C2/1075 , F04C27/00 , F04C2230/604 , F04C2240/10
摘要： A stator is provided for a progressive cavity device. The stator includes modular stator segments connected together. Each stator segment includes a front surface, a rear surface, and an internal helical cavity extending longitudinally from the front surface to the rear surface. Each stator segment also includes a set of bolt holes extending longitudinally from the front surface to the rear surface, and a set of connection holes opening at the front surface and extending at least partially longitudinally from the front surface to the rear surface. Bolts, inserted through the bolt holes into connection holes of an adjacent stator segment, connect the stator segments and align the internal helical cavities to form a continuous helical chamber.
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公开(公告)号：US11655815B2
公开(公告)日：2023-05-23
申请号：US17120803
申请日：2020-12-14
申请人： Roper Pump Company
CPC分类号： F04C2/1075 , F01C21/104 , F01C1/101 , F04C2240/10 , F04C2240/20 , F04C2240/70
摘要： A semi-rigid stator is provided for a helical gear device. The stator includes a stack of rigid rings, a deformable layer, and a rigid housing. Each of the rigid rings has a central opening and an exterior surface. The rigid rings are aligned along a common centerline and rotated slightly relative to each other such that the stack of rigid rings forms a helically convoluted chamber. Each of the rigid rings is secured within the rigid stator housing by the deformable layer disposed between the exterior surface of each of the rigid rings and the rigid housing. The deformable layer bonds the rigid rings together as the ring stack and permits movement of the rigid rings relative to each other.
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公开(公告)号：US20200284262A1
公开(公告)日：2020-09-10
申请号：US16881753
申请日：2020-05-22
申请人： Roper Pump Company
发明人： Edmond Tate Coghlan
摘要： A stator for a helical gear device includes a first section having first helically convoluted chamber with a set of radially inwardly extending lobes and a second section adjacent to the first section. The second section includes a stack of cutter disks. Each cutter disk includes a front surface, a rear surface, an interior surface defining a central opening extending from the front surface to the rear surface, a forward cutting edge, and a rearward cutting edge. The interior surface forms a same number of lobes for the central opening as the set of radially inwardly extending lobes in the first section. Each cutter disk is aligned along a common centerline, and each cutter disk is rotated slightly relative to each other to form a second helically convoluted chamber with a same pitch as the first helically convoluted chamber. The second helically convoluted chamber exposes, to materials passing through, portions of the forward cutting edge or the rearward cutting edge of each cutter disk.
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公开(公告)号：US20180283376A1
公开(公告)日：2018-10-04
申请号：US15939670
申请日：2018-03-29
申请人： Roper Pump Company
摘要： A progressive cavity pump includes at least one of a jacketed stator casing and a jacketed inlet body. The jacketed stator casing includes a stator heating chamber, a stator assembly, and a rotor rotatably disposed within the stator assembly. The stator heating chamber forms a first space around the stator assembly and receives heating fluid therein. The stator assembly includes a cylindrical wall and a stator segment that forms a helically-convoluted chamber within the cylindrical wall. The jacketed inlet body includes an inlet heating chamber and a working fluid chamber in fluid communication with the helically-convoluted chamber. The inlet heating chamber forms a second space around the working fluid chamber and receives heating fluid therein. The stator heating chamber and the inlet heating chamber are isolated from each other, the helically-convoluted chamber, and the working fluid chamber.
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公开(公告)号：US20180202437A1
公开(公告)日：2018-07-19
申请号：US15817961
申请日：2017-11-20
申请人： Roper Pump Company
IPC分类号： F04C2/344
CPC分类号： F04C2/344 , F01C19/005 , F04C2/084 , F04C2/18 , F04C15/0019 , F04C2240/30 , F04C2250/20
摘要： A pump fluid driving apparatus includes a housing having a chamber, with two gears mounted within the chamber. The housing includes a first rounded wall section and a second rounded wall section, the first and second rounded wall sections defining at least a portion of the chamber. The gears have teeth located about their respective peripheries and operatively positioned with the teeth of the first gear and the teeth of the second gear intermeshed. The teeth include slotted teeth and solid teeth arranged with uniform spacing in a repeating pattern about the periphery of each of the gears, with each of the slotted teeth having a vane slot and a radially extending vane extending from the vane slot, and each radially extending vane being movable within the respective vane slot and being configured to contact the respective first or second rounded wall sections.
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