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公开(公告)号：US12085092B2
公开(公告)日：2024-09-10
申请号：US15519299
申请日：2015-08-27
申请人： Tianyi Xing
发明人： Yu Xing , Tianyi Xing
CPC分类号： F04D7/02 , F04D29/108 , F04D29/128
摘要： An auxiliary shaft seal flushing system of a centrifugal pump and an axial flow pump, comprising a main running pump and a standby pump which are provided with a same shaft seal flushing system respectively, the shaft seal flushing system of the main running pump and that of the standby pump being connected in parallel to form a common shaft seal flushing system. The common shaft seal flushing system comprises: a first outlet pipe connected to an outlet of the main running pump and a first switch valve provided on the first outlet pipe for switching the flushing fluid, a second outlet pipe connected to an outlet of the standby pump and a second switch valve provided on the second outlet pipe for switching the flushing fluid, and a first fluid guide pipe connected to the outlets of the first outlet pipe and the second outlet pipe; the outlet of the first fluid guide pipe is respectively connected to a flushing fluid inlet on a sealing gland of the main running pump by a third outlet pipe and connected to a flushing fluid inlet on a sealing gland of the standby pump by a fourth outlet pipe. The present invention can keep the parameters of the fluid material in sealed cavities of the main and standby pumps the same at all times.
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公开(公告)号：US20230279867A1
公开(公告)日：2023-09-07
申请号：US18006100
申请日：2021-07-16
CPC分类号： F04D29/2266 , F02K9/46 , F04D7/02
摘要： Fuel pump for an aircraft engine, comprising an inducer and a centrifugal impeller fixed together and having an axis of rotation, an annular space spacing axially the inducer and the impeller, and two contact portions between the inducer and the impeller disposed radially outside the annular space, a first plenum chamber and a second plenum chamber, in which the inducer and the impeller are spaced axially from each other, each being disposed between the two contact portions, the plenum chambers being symmetrical to each other with respect to the axis of rotation and in fluid communication with the annular space, the centrifugal impeller comprising a plurality of axial balancing holes distributed about the axis of rotation and opening out into the annular space at one end, and into a downstream space of the impeller at the other end.
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公开(公告)号：US20220381252A1
公开(公告)日：2022-12-01
申请号：US17886031
申请日：2022-08-11
申请人： Nuhn Industries Ltd.
发明人： Ian NUHN
IPC分类号： F04D25/06 , A01C23/00 , F04D7/04 , F04D29/62 , A01C3/02 , A01C23/04 , F04D13/08 , F04D29/60 , F04D3/00 , F04D13/02 , A01C3/06 , F04D7/02 , F04D29/24 , F04D29/42 , F04D29/46
摘要： A pump is provided for immersion in a fluid reservoir, such as a pit or lagoon containing liquid manure, from a position at an edge of the reservoir. The pump may be adapted for connection to a farm vehicle, such as a tractor, positioned at the edge of the reservoir. The pump comprises an extensible body, fluid conduit and drive means in order that a length of the pump may be varied in order to accommodate a variety of reservoir fluid heights. In addition, the pump may be pivotable relative to at least a portion of a frame in order that the entrance angle may be adjusted. The pump may comprise a housing with an inlet and an outlet, the outlet in fluid communication with the fluid conduit. An impeller within the housing may direct fluid from the inlet to the outlet in the housing.
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公开(公告)号：US10738783B2
公开(公告)日：2020-08-11
申请号：US15933718
申请日：2018-03-23
发明人： François Viargues , Gérard Marzo , Bertrand Rollet
IPC分类号： F04D13/02 , F04D7/02 , F25B25/00 , F04D29/42 , F04D29/049 , F25B9/14 , F04D13/06 , F25D17/02 , F04B15/08
摘要： The invention concerns a circulator (2) for circulating a refrigerant fluid (4) in a circuit (6) of a cryogenic installation (1) from and to an element (3) having a thermal load, the circulator (2) including a drive module (8a, 8b) and a pumping module (9a, 9b) including a centrifugal wheel (10), said drive module (8a, 8b) having a magnetic coupling (51) to said pumping module (9a, 9b) in order to drive said centrifugal wheel (10) in a rotary movement.
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公开(公告)号：US20200063607A1
公开(公告)日：2020-02-27
申请号：US16283353
申请日：2019-02-22
申请人： ROLLS-ROYCE plc
发明人： Martin N. GOODHAND , Ian M. BUNCE
摘要： A turbomachine (105) configured to compress supercritical carbon dioxide is shown. The turbomachine comprises, in fluid flow series, an inlet (201), an inducerless radial impeller (202) having a plurality of blades, and a fully vaneless diffuser (203).
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公开(公告)号：US20200056615A1
公开(公告)日：2020-02-20
申请号：US15998705
申请日：2018-08-16
摘要： A motorized pump to pump fluid. The motorized pump includes a shaft disposed in a center portion of the motorized pump, a motor having a motor stator, and a pump having an internal diffuser and an external impeller, wherein the motor stator radially surrounds the pump. A housing radially encloses the motor stator, the internal diffuser, and the external impeller. The motor stator is disposed adjacent the housing.
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公开(公告)号：US20200049150A1
公开(公告)日：2020-02-13
申请号：US16338814
申请日：2017-11-08
发明人： Daisuke YOSHIMOTO , Shoichiro HAYASHI , Akira YAMAGUCHI , Koichiro YAMANOUCHI , Yuya YAMANE , Naoya KODAMA
摘要： A heat insulating vessel including an inner tank having a vertical axis to accommodate low temperature liquefied gas, an outer tank externally around the inner, and a low temperature liquefied gas pump disposed inside the inner tank. The outer tank having an upper part and an outer tank body. A lid structure having a heat-insulated structure detachably fitted into an upper part of the inner. The heat insulating vessel includes a first fastener to fasten with bolts, a first flange to upper ends of the inner and outer tanks upper part to a second flange to an outer circumferential part of the lid structure, and a second fastener to fasten with bolts, a third flange to an upper end of the outer tank body to a fourth flange to a lower end of the outer tank upper part. A vacuum insulating layer is formed between the inner and outer tanks.
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公开(公告)号：US10527053B2
公开(公告)日：2020-01-07
申请号：US15104889
申请日：2014-12-23
发明人： Hui Xu , Yangzhong Lian , Dengguang Zhu , Feng Zheng , Shuai Li , Zhongqun Mao , Yongding Zhu
摘要： An open water pump comprises an upper casing, a lower casing, an impeller having a central shaft and a plurality of blades. Each blade has an upper portion and a lower portion. The upper casing has an upper chamber, the lower casing has a lower chamber. A plurality of inlets attached below and to a side of the lower casing, and a plurality of outlets attached to a side of the upper casing. At least the bottom portion of the lower portion of each blade which attached to the shaft gradually bends along a rotation direction of the impeller, and a ratio of a height of the lower portion of each blade to a height of the upper portion is between 1 and 5. The impeller can be allowed to draw water at a low water level, foam formed by washing liquid or food debris on the surface of water can be less likely to get into the impeller to influence the drawing of water, a sufficient amount of water can be drawn from the water inlets.
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公开(公告)号：US20190322551A1
公开(公告)日：2019-10-24
申请号：US16503075
申请日：2019-07-03
发明人： Keiichi Asami , Keiichiro Onishi
摘要： There is provided an in-liquid plasma device including a tubular flow channel in which a liquid flow, and a cavitation generator and a voltage application unit which are disposed in the tubular flow channel. The cavitation generator generates cavitation in the liquid inside the tubular flow channel. The voltage application unit is located in the tubular flow channel so as to generate plasma by applying a voltage to the liquid in which the cavitation is generated. The cavitation generator has a throttle portion whose inner diameter is smaller than other sites in the tubular flow channel. The throttle portion has an upstream side inclined surface located on an upstream side of a narrowest site of the throttle portion, and a downstream side inclined surface located on a downstream side of the narrowest site of the throttle portion.
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公开(公告)号：US20190211833A1
公开(公告)日：2019-07-11
申请号：US16325899
申请日：2017-11-09
发明人： Hiroshi Funakoshi , Yasushi Ueda , Akio Maeda , Yasuhiro Koyama , Hidetoshi Fukuta , Masahide Ikunami
IPC分类号： F04D29/041 , F04D1/08 , F04D7/02 , F04D13/02 , F04D15/00
摘要： A vertical pump includes: a rotary shaft; multi-stage impellers; a casing accommodating the multi-stage impellers; a mechanical seal provided in a penetration part of the casing for the rotary shaft; a balance sleeve, the balance sleeve being positioned between a final stage impeller of the multi-stage impellers and the mechanical seal in the penetration part for the rotary shaft; an intermediate chamber provided between the rotary shaft and the casing and provided on an opposite side of the multi-stage impellers across the balance sleeve in an axial direction of the rotary shaft, the intermediate chamber communicating with an intermediate stage impeller among the multi-stage impellers; a low pressure chamber provided between the rotary shaft and the casing, the low pressure chamber communicating with a low pressure side compared to the intermediate chamber; and a partition wall part dividing the intermediate chamber and the low pressure chamber.
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