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1. 发明申请

US20170292606A1 SEAL ASSEMBLY FOR A VALVE STEM 审中-公开
公开(公告)号：US20170292606A1
公开(公告)日：2017-10-12
申请号：US14908576
申请日：2015-11-24
申请人： NUOVO PIGNONE SRL
发明人： Lorenzo Bergamini , Vincenzo Pietanza , Tommaso Cappiello
IPC分类号： F16J15/00 , F16J15/48 , F16J15/18
CPC分类号： F16J15/004 , F16J15/185 , F16J15/186 , F16J15/46 , F16J15/48 , F16K41/003 , F16K41/04
摘要： A seal assembly for a valve stem comprises an external seal placed on a valve stem facing an external environment; an internal seal placed on the valve stem facing a process environment; the external and internal seals define a chamber for the containment of barrier fluid; the chamber has an inlet configured to be placed into fluid communication with a source of barrier fluid; a detector of the amount of barrier fluid; a pressurizer device for providing the chamber with a positive pressure with respect to the process environment; the pressurizer device is configured to be installed coaxially with the valve stem.

2. 发明授权

US10954806B2 Seal for a gap between an outer and an inner cylindrical surface 有权
公开(公告)号：US10954806B2
公开(公告)日：2021-03-23
申请号：US15518121
申请日：2015-10-02
申请人： Nuovo Pignone Srl
发明人： Lorenzo Bergamini
IPC分类号： F16J15/3292 , F01D11/00
摘要： A seal for a gap between an outer and an inner cylindrical surface, coaxial with a central axis in common and arranged to rotate reciprocally, the seal comprises a plurality of plate elements stacked onto one another to define a ring between the outer and inner cylindrical surfaces, wherein each plate has a concave and a convex side, the convex side of each plate element being adjacent to the concave side of the next plate element.

3. 发明授权

US09890874B2 Multistage trim for control valves 有权
公开(公告)号：US09890874B2
公开(公告)日：2018-02-13
申请号：US15036680
申请日：2014-11-14
申请人： Nuovo Pignone Srl
发明人： Lorenzo Bergamini , Vincenzo Pietanza
IPC分类号： F16K47/08 , F16K11/07
CPC分类号： F16K47/08 , F16K11/07
摘要： A control valve comprising a cylindrical hollow trim defining an inner bore extending along an axis between a first opening and a second opening, the first opening defining an inlet of the valve, the trim comprising a first outer cylinder extending along the axis and comprising a first plurality of radial through holes defining an outlet, a second cylinder, housed in the first cylinder and coaxial, the second cylinder comprising a second plurality of radial through holes, the holes of the first plurality being smaller and in greater number than the holes of the second plurality, for each hole of one of the first and second cylinders the projection along a radial direction on the other of the first and second cylinders being spaced from each hole of the other of the first and second plurality a plug sized to fit inside the bore and slidably movable along the axis.

4. 发明申请

US20150260190A1 HIGH EFFICIENCY LOW SPECIFIC SPEED CENTRIFUGAL PUMP 审中-公开
标题翻译：高效率低速离心泵
公开(公告)号：US20150260190A1
公开(公告)日：2015-09-17
申请号：US14435507
申请日：2013-10-14
申请人： NUOVO PIGNONE SRL
发明人： Lorenzo Bergamini
IPC分类号： F04D1/06 , F04D29/10
CPC分类号： F04D1/06 , F04D15/0088 , F04D29/106 , F04D29/167 , F05D2240/59 , F16J15/3292
摘要： A centrifugal pump comprising: a casing; a rotary shaft arranged for rotation in the casing; a plurality of pump stages, each pump stage comprising an impeller secured on said rotary shaft and arranged for rotation in a respective impeller chamber formed in the casing. The pump further comprises a plurality of sealing members for reducing leakage between a rotary component and a respective stationary component. At least one of the sealing members comprises an arrangement of compliant plate members attached in facing relation at root ends to the respective stationary component and forming a sealing ring between the stationary component and the respective rotary component. Moreover, at least some pump stages have a specific speed of 25 or less.
摘要翻译：一种离心泵，包括：壳体; 旋转轴，其设置成在所述壳体中旋转; 多个泵级，每个泵级包括固定在所述旋转轴上的叶轮，并布置成在形成在壳体中的各个叶轮室中转动。泵还包括多个用于减少旋转部件和相应固定部件之间的泄漏的密封部件。密封构件中的至少一个包括在根部端部附接到相应的固定部件的柔性板构件的布置，并且在固定部件和相应的旋转部件之间形成密封环。此外，至少一些泵级具有25或更小的特定速度。

5. 发明授权

US10393148B2 Barrel turbo-machine comprising retracting shear 有权
公开(公告)号：US10393148B2
公开(公告)日：2019-08-27
申请号：US15031983
申请日：2014-10-24
申请人： Nuovo Pignone Srl
发明人： Lorenzo Bergamini , Donato Antonio Ripa , Fabrizio Milone
IPC分类号： F04D1/06 , F04D29/62 , F04D29/42 , F04D29/52 , F04D29/64 , F04D17/12
摘要： A turbo machine comprising a barrel casing having a cylindrical internal surface defining an internal containment volume, a bundle having a cylindrical shape, adapted to be accommodated into the internal containment volume, a cylindrical cover connected to the bundle to close the internal containment volume and hold the bundle inside the barrel casing, a split shear ring adapted to fix the barrel casing with the cylindrical cover wherein the external cylindrical surface of the cylindrical cover and the cylindrical internal surface of the barrel casing are provided with a first circumferential groove and a second circumferential groove adapted to accommodate the shear ring and wherein the first grooves is adapted to completely accommodate the cross section of the split shear ring.

6. 发明授权

US10359113B2 Seal assembly for a valve stem 有权
公开(公告)号：US10359113B2
公开(公告)日：2019-07-23
申请号：US14908576
申请日：2015-11-24
申请人： Nuovo Pignone SRL
发明人： Lorenzo Bergamini , Vincenzo Pietanza , Tommaso Cappiello
IPC分类号： F16J15/00 , F16J15/18 , F16J15/46 , F16J15/48 , F16K41/00 , F16K41/04
摘要： A seal assembly for a valve stem comprises an external seal placed on a valve stem facing an external environment; an internal seal placed on the valve stem facing a process environment; the external and internal seals define a chamber for the containment of barrier fluid; the chamber has an inlet configured to be placed into fluid communication with a source of barrier fluid; a detector of the amount of barrier fluid; a pressurizer device for providing the chamber with a positive pressure with respect to the process environment; the pressurizer device is configured to be installed coaxially with the valve stem.

7. 发明授权

US10294949B2 Multistage turbomachine with embedded electric motors 有权
公开(公告)号：US10294949B2
公开(公告)日：2019-05-21
申请号：US15115722
申请日：2015-02-02
申请人： Nuovo Pignone Srl
发明人： Lorenzo Bergamini , Marco Cipriani
IPC分类号： F04D27/00 , F04D19/02 , F04D25/06 , F04D29/056 , F04D17/12 , F04D1/06 , F04D3/00 , F04D13/06 , F04D15/00 , F04D29/06 , F04D29/18 , F04D29/22 , F04D29/42 , F04D29/52 , F04D29/58 , F04D29/70
摘要： A multistage turbomachine is disclosed, comprising a casing with a fluid inlet and a fluid outlet and a plurality of stages arranged in the casing. A flow path extends from the fluid inlet to the fluid outlet through the sequentially arranged stages. Each stage is comprised of a rotating impeller and an electric motor embedded in the casing and arranged for rotating the impeller at a controlled rotary speed. Each electric motor comprises a motor rotor, arranged on the impeller and integrally rotating therewith, and a motor stator stationarily arranged in the casing. Pairs of sequentially arranged impellers are configured for rotation in opposite directions.

8. 发明授权

US09803644B2 Back-to-back centrifugal pump 有权
公开(公告)号：US09803644B2
公开(公告)日：2017-10-31
申请号：US14649932
申请日：2013-12-02
申请人： Nuovo Pignone Srl
发明人： Lorenzo Bergamini , Donato Antonio Ripa , Fabrizio Milone
IPC分类号： F04D1/06 , F04D1/10 , F04D29/42 , F04D29/44 , F04D29/62
CPC分类号： F04D1/066 , F04D1/10 , F04D29/426 , F04D29/445 , F04D29/628
摘要： A back-to-back centrifugal pump comprising a pump inlet, a pump outlet, a pump shaft, a set of first stages, and a set of second stages in a back-to-back arrangement. Between the two sets of stages an intermediate crossover module is arranged. The first and second sets of stages comprise respective first outer diaphragms and second outer diaphragms. The outer diaphragms and the intermediate crossover module are stacked together and form a pump casing. The intermediate crossover module forms at least one axial transfer channel between the two sets of stages, and a fluid connection between the set of second stages and the pump outlet. The second diaphragms comprise each at least one peripherally arranged through aperture. The through apertures are aligned to form at least one passageway, which fluidly connects the axial transfer channel with a most upstream one of the impellers of the second set of stages.

9. 发明授权

US09638342B2 Control valve for gas and liquids 有权
公开(公告)号：US09638342B2
公开(公告)日：2017-05-02
申请号：US14391747
申请日：2013-04-05
申请人： Nuovo Pignone Srl
发明人： Lorenzo Bergamini , Vincenzo Pietanza
IPC分类号： F16K27/04 , F16K47/08 , F16K3/24
CPC分类号： F16K27/041 , F16K3/24 , F16K47/08 , Y10T137/87265 , Y10T137/87539
摘要： A valve comprising a valve body with a fluid inlet, a fluid outlet, an inner cavity and an outer cavity at least partly surrounding the inner cavity. The outer cavity is in fluid communication with the fluid inlet and with the inner cavity and the inner cavity is in fluid communication with the fluid outlet. A flow splitter is provided, forming at least two flow passages in the outer cavity.

10. 发明申请

US20150114498A1 VALVE 有权
标题翻译：阀
公开(公告)号：US20150114498A1
公开(公告)日：2015-04-30
申请号：US14391747
申请日：2013-04-05
申请人： Nuovo Pignone Srl
发明人： Lorenzo Bergamini , Vincenzo Pietanza
IPC分类号： F16K27/04 , F16K47/08 , F16K3/24
CPC分类号： F16K27/041 , F16K3/24 , F16K47/08 , Y10T137/87265 , Y10T137/87539
摘要： A valve comprising a valve body with a fluid inlet, a fluid outlet, an inner cavity and an outer cavity at least partly surrounding the inner cavity. The outer cavity is in fluid communication with the fluid inlet and with the inner cavity and the inner cavity is in fluid communication with the fluid outlet. A flow splitter is provided, forming at least two flow passages in the outer cavity.
摘要翻译：一种阀，包括具有流体入口的阀体，流体出口，内腔和至少部分地围绕内腔的外腔。外腔与流体入口流体连通，并且内腔和内腔与流体出口流体连通。设置有分流器，在外腔中形成至少两个流动通道。

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