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公开(公告)号：US20120170704A1
公开(公告)日：2012-07-05
申请号：US12982280
申请日：2010-12-30
申请人： Robin D. Sprague , Bret E. Nelson
发明人： Robin D. Sprague , Bret E. Nelson
IPC分类号： G21C15/25
CPC分类号： G21C13/032 , G21C15/25 , Y02E30/31
摘要： A method and apparatus for providing a Boiling Water Reactor (BWR) jet pump three point slip joint clamp to mitigate sleep joint leakage flow induced vibration of a BWR jet pump assembly. A collar, provided as one seamless component or in separate portions, is installed on the upper crown of a diffuser. The collar includes a lower set of fasteners and an upper set of fasteners that contact the inlet mixer and diffuser, respectively, to horizontally stabilize the inlet mixer in a fixed position inside of the diffuser. The upper fasteners may be anchored by bosses that ensure a light-weight design of the collar. An optional cantilevered seal (including a cantilevered overhang and a lip) may mitigate leakage from the slip joint interface.
摘要翻译： 一种用于提供沸水反应堆（BWR）喷射泵三点滑动接头夹以减轻BWR喷射泵组件的睡眠接头泄漏流引起的振动的方法和装置。 提供为一个无缝部件或分开的部分的轴环安装在扩散器的上冠上。 套环包括下一组紧固件和一组紧固件，其分别接触入口混合器和扩散器，以将入口混合器水平地稳定在扩散器内部的固定位置。 上部紧固件可以由凸起锚定，以确保衣领的轻量化设计。 可选的悬臂密封（包括悬臂悬臂和唇缘）可以减轻滑动接头界面的泄漏。
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公开(公告)号：US6086120A
公开(公告)日：2000-07-11
申请号：US985528
申请日：1997-12-05
申请人： Gerald A. Deaver , Siamak Bourbour
发明人： Gerald A. Deaver , Siamak Bourbour
CPC分类号： G21C15/25 , G21Y2002/303 , G21Y2002/40 , G21Y2004/501 , Y02E30/40 , Y10T403/4611
摘要： Methods and apparatus for supporting the lower riser assembly of a jet pump in a reactor pressure vessel (RPV) of a nuclear reactor are described. In one embodiment of the apparatus, the clamp apparatus facilitates applying compression force on the elbow. The clamp apparatus includes a lower elbow clamp, a riser clamp, and a bridge. The lower elbow clamp is positioned adjacent an interface between the elbow and the thermal sleeve of the jet pump riser pipe assembly. The riser clamp is secured to the riser pipe of the jet pump riser pipe assembly at a location adjacent an interface between the riser pipe and the elbow. The bridge rigidly couples the lower elbow clamp and the lower clamp so that as the respective clamps are secured to the lower riser assembly, a compression clamping force is placed on the piping and welds at each clamp.
摘要翻译： 描述了用于在核反应堆的反应堆压力容器（RPV）中支撑喷射泵的下部提升管组件的方法和装置。 在装置的一个实施例中，夹紧装置有助于在肘部上施加压力。 夹紧装置包括下弯头夹，立管夹和桥。 下肘夹位于喷气泵提升管组件的弯头和热套筒之间的界面附近。 提升管夹在与提升管和肘部之间的界面相邻的位置处固定到喷射泵提升管组件的提升管。 桥接器刚性地连接下弯头夹和下夹具，使得当相应的夹具固定到下提升管组件时，压缩夹紧力被放置在管道上并在每个夹具处焊接。
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公开(公告)号：US4675149A
公开(公告)日：1987-06-23
申请号：US824898
申请日：1986-01-31
申请人： Richard W. Perry , John Chang , Robert C. Dixon
发明人： Richard W. Perry , John Chang , Robert C. Dixon
CPC分类号： G21C19/00 , G21C15/25 , G21C19/207 , Y02E30/40
摘要： Repair apparatus and a method of repair utilized for securing pressure sensing lines to jet pump diffusers in boiling water nuclear reactors is disclosed. Conventional access is made to the reactor with removal of the jet pump inlet mixer to expose the upwardly disposed frustum-shaped diffuser. The diffuser includes a pressure sensing line mounted by a stand off block. It has been found that this pressure sensing line becomes separated from the diffuser due to vibration and accompanying metal fatigue. A repair is effected by introduction of an arcuate beam configured for live support at each end. This pressure sensing line and stand off block is bracketed by the upper end of a beam to register the line to the stand off block. The lower end of the beam brackets the line and stands off from the diffuser at a second introduced stand off block. The line is provided with two points of support to prevent further dislodging vibration. The beam is in turn captured by an elliptical ring clamp encircling the essentially circular section of the diffuser between the beam and its captured line. A saddle on the elliptical ring opposite the clamped beam tensions the ring diameter. The ring clamp fits in a preformed notch on the beam and is disposed normally to the surface of the diffuser from the saddle. This disposition of the ring urges the beam upwardly in latched engagement with the stand off block so as to position the line at the upper end of the beam to the stand off block. A universal beam holder for the remote clamping and release of the beam as well as universal manipulation of the beam in pitch, yaw and azimuth is disclosed. This universal beam holder enables positioning of the beam in the submerged radio-active environment of the reactor. The clamp also enables the beam to be maintained in position with the line and stand off block while the ring clamp captures the beam. When the ring clamp is fastened to the beam by securing of a wedge fitting at the saddle, the universal beam holder releases the beam and is withdrawn. Clamping of the pressure sensing line at two spaced apart points secures against both initial detachment and further vibration damage.
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公开(公告)号：US4043705A
公开(公告)日：1977-08-23
申请号：US634426
申请日：1975-11-24
申请人： Vernon I. Schlosser
发明人： Vernon I. Schlosser
摘要： The invention provides a tool for closing off the jet nozzles of jet pumps located in an almost inaccessible location inside the shell of a boiling water reactor. The tool suspended on a cord is lowered down through a narrow gap extending down along the major part of the shell of the reactor, a distance of approximately 30 feet. The tool is lowered onto a stationary projection--namely, a lug or ear--which provides a gauge point for height and lateral position and an anchorage for torque in a horizontal plane. With these two controls for the tool of the invention, a closure for the jet nozzle may be applied to each of the jet nozzles to close them off against outflow of the water contained in the shell of the reactor thereby avoiding the bleak alternative of taking the reactor completely out of service, which includes removing the fuel bundles and draining the shell.
摘要翻译： 本发明提供了一种用于关闭位于沸水反应器壳体内几乎不可接近的位置的喷射泵的喷嘴的工具。 悬挂在绳索上的工具沿着沿着反应堆壳体的主要部分向下延伸的窄间隙向下降低约30英尺的距离。 该工具下降到固定的突起上，即一个凸耳或耳朵，其提供高度和横向位置的测量点以及在水平面中的扭矩的锚固。 利用用于本发明的工具的这两个控制装置，用于喷嘴的封闭件可以施加到每个喷嘴以将其关闭以防止容纳在反应器的壳体中的水的流出，从而避免了采取 反应器完全停止使用，其中包括拆除燃料束并排出壳体。
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公开(公告)号：US3380649A
公开(公告)日：1968-04-30
申请号：US49778765
申请日：1965-10-19
申请人： GEN ELECTRIC
发明人： MARTIN ROBERTS JOHN
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公开(公告)号：US11530764B2
公开(公告)日：2022-12-20
申请号：US16592103
申请日：2019-10-03
摘要： A jet pump slip joint repair assembly includes at least one clamp and a bushing configured to be inserted in a bore of a diffuser and to surround a portion of an inlet mixer. The clamp includes a gripping surface and a gripping collar. The bushing includes a generally cylindrical sidewall, the sidewall configured to surround the portion of the inlet mixer, a grooved flange on an upper surface of the sidewall, at least one cutout between adjacent portions of the grooved flange, and a groove on an inner, bottom surface of the sidewall. The assembly also includes a seal in the groove. The seal is flexible and formed of a metallic material. The seal is configured to be compressed when the at least one clamp engages the bushing.
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27.发明申请公开(公告)号：US20200251232A1
公开(公告)日：2020-08-06
申请号：US16793089
申请日：2020-02-18
发明人： Eric P. Loewen , James P. Sineath , Dean D. Molinaro , William C. Dawn , Robin D. Sprague , Theron D. Marshall , Joel P. Melito
摘要： Nozzles mix coolant from different sources together in an outlet to prevent differences in coolant output. Different flow path configurations are useable in the nozzle, including a multiple-path configuration with flows from different sources jacketed or concentrically arranged around flows from other sources. Swirl vanes may be installed in the nozzle to impart mixing or filtering the fluid flow. Diffusers may be used to passively suction or accelerate flow and mixing the same like a jet pump. Nozzles can be combined with filtration systems like trap filters that capture debris based on a momentum difference between the denser debris and fluid. Filters can use magnetic, adhesive, or porous materials to capture debris without blocking a flow path. Filters can be disengaged, such as when clogged, such that coolant flows around the system. Nozzles can be installed on feedwater sparger assemblies in varying manner to distribute coolant from multiple nozzles.
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公开(公告)号：US10458578B2
公开(公告)日：2019-10-29
申请号：US14956909
申请日：2015-12-02
摘要： A jet pump slip joint repair assembly includes at least one clamp and a bushing configured to be inserted in a bore of a diffuser and to surround a portion of an inlet mixer. The clamp includes a gripping surface and a gripping collar. The bushing includes a generally cylindrical sidewall, the sidewall configured to surround the portion of the inlet mixer, a grooved flange on an upper surface of the sidewall, at least one cutout between adjacent portions of the grooved flange, and a groove on an inner, bottom surface of the sidewall. The assembly also includes a seal in the groove. The seal is flexible and formed of a metallic material. The seal is configured to be compressed when the at least one clamp engages the bushing.
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公开(公告)号：US20180090234A1
公开(公告)日：2018-03-29
申请号：US14204687
申请日：2014-03-11
发明人： Masakazu ABURA , Toshihiro Yasuda , Kazuo Sudo , Haruhiko Hata , Yasushi Kanazawa , Kunihiko Kinugasa , Hajime Mori
IPC分类号： G21C15/25
CPC分类号： G21C15/25 , G21C19/20 , G21C19/207 , G21D1/04 , G21Y2002/104 , G21Y2002/206 , G21Y2002/303 , G21Y2004/301 , Y02E30/40 , Y10T403/5761
摘要： An apparatus for reinforcing a jet pump riser includes: an elbow upper clamp for covering a riser elbow coupled to a thermal sleeve from an upper side thereof; an elbow lower clamping member for clamping the riser elbow from a lower side thereof; an elbow vertical portion clamping member for covering a vertical portion of the riser elbow; and an elbow horizontal portion clamping member for covering a horizontal portion of the riser elbow. These members are disposed in different orientations with respect to the elbow upper clamp so as to fix the thermal sleeve, the riser elbow and the riser pipe.
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公开(公告)号：US20170108013A1
公开(公告)日：2017-04-20
申请号：US14885109
申请日：2015-10-16
申请人： AREVA Inc.
摘要： A sealing device for a jet pump of a boiling water reactor is provided. The jet pump includes an inlet mixer and a diffuser receiving the inlet mixer at a slip joint such that an outer circumferential surface of the inlet mixer is received in an inner circumferential surface of the diffuser at the slip joint. The diffuser includes a plurality of guiding fins, each guiding fin including a radially inner surface, a radially outer surface and lateral surfaces extending radially between the inner and outer surfaces. The sealing device includes a seal configured for sealingly contacting the outer circumferential surface of the inlet mixer and a collar configured for holding the seal against the outer circumferential surface of the inlet mixer. The collar includes portions configured for being received radially between the radially inner surfaces of the guiding fins and the outer circumferential surface of the inlet mixer. The sealing device further includes a clamp configured for contacting the radially outer surfaces of the guiding fins to axially clamp the guiding fins. A method of mounting a sealing device onto a slip joint of a jet pump of a boiling water reactor is also provided.
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