Mitsubishi Heavy Industries Limited

Mitsubishi Hitachi Power Systems, Ltd.

Mitsubishi Power, Ltd.

Eagle Industry Co., Ltd.

Tanehiro Shinohara

Hidekazu Uehara

Shin Nishimoto

Takashi Nakano

Yuichiro Waki

Yutaka Ozawa

Takaaki Kaikogi

Masanori Yuri

Kouichi Akagi

Naoto Tochitani

Hiroharu Oyama

Shimpei Yokoyama

Masato Araki

Nobuhiro Kunitake

Hirokazu Shirai

Toshio Asada

Takumi Hori

Chihiro Yoshimine

Takuzo Shigihara

Norihisa Takei

Tatsuji Takahashi

Yoshinori Tanaka

Katsunori Tanaka

Eisaku Ito

Kazuo Uematsu

Koichi Tanimoto

Hitoshi Morimoto

Katsuhisa Hamada

Kazuharu Hirokawa

Nobuhide Hara

Keita Takamura

Keizo Tsukagoshi

Yoichi Uefuji

Junichiro Masada

Kohei Ozaki

Yukihiro Hashimoto

Azumi Yoshida

Shuichi Isayama

Tadasuke Nishioka

Takuo Oda

Masaya Hatanaka

Hiroyuki Nakaharai

Shunsaku Eguchi

Zenichi Yoshida

Masashi Kitamura

Tadateru Tanioka

Yuichi Hirakawa

Yutaka Kawata

Takahiro Ohta

Masahiko Toyoda

Shin Koga

Takeaki Oya

Koji Takeshita

Tetsuro Akamatsu

Akihiro Kawaguchi

Setunori Sakakibara

Hidehiko Nakane

A heat exchanger for heat exchange between a first fluid and a second fluid is provided with: a body part which is an additive manufactured body and includes a first passage through which the first fluid flows and a second passage through which the second fluid flows; and a covering part attached to the body part. The body part has a first opening portion of the first passage and a second opening portion of the second passage, and the covering part is attached to the body part so as to cover exposure of the first opening portion and the second opening portion.

Heat exchanger, method of producing heat exchanger, and method of confirming blockage of heat exchanger

An oil field pump is installed within a pipe that connects to an oil field, and feeds accumulated extraction oil in a predetermined direction, the oil filed pump including a rotor with an internal flow path for the extraction oil, a stator installed on the outer circumference of the rotor, a thrust bearing that supports the axial weight of the rotor and the stator, a supply pipe that supplies a portion of the extraction oil in the flow path to the thrust bearing, and a filter that is installed at further upstream on the flow path than the supply pipe along the flow direction of the extraction oil, and traps foreign matter.

Oil field pump

A tilting pad bearing including pads disposed around a rotating shaft so as to face an outer peripheral surface of the rotating shaft, liners each supporting an outside of the pad in a radial direction with an axis of the rotating shaft as a center, and pivots each supporting an outside of the liner in the radial direction with the axis as a center at a central position of the liner in an axial direction of the rotating shaft so as to allow the pad to be swingable, wherein a recessed portion recessed in a direction away from the pad is formed on a surface of the liner facing the pad or a surface of the pad facing the liner at least at the central position thereof in the axial direction of the rotating shaft.

Tilting pad bearing

An oil field pump installed within a pipe that connects to an oil field, feeds accumulated extraction oil in a predetermined direction and includes a rotor, a stator mounted on the outer circumference of the rotor, a flow path for flow of the extraction oil connecting an area formed within the rotor to an area formed between the rotor and the stator, a thrust bearing that supports the axial weight of the rotor and the stator, and a supply pipe that supplies a portion of the extraction oil in the flow path to the thrust bearing. The thrust bearing includes a protrusion part fixed to the outer circumference of the rotor and rotating as one piece with the rotor, and a facing part fixed to the stator and facing opposite a surface in the axial direction of the protrusion.

A bearing pad for a tilting-pad bearing includes a first member having a bearing surface and a second member disposed on a back surface side of the first member. At least one of a back surface of the first member or a front surface of the second member facing the back surface of the first member has a recess for forming a cavity between the first member and the second member. Preferably, the bearing pad further includes a support member disposed on a back surface side of the second member and tiltably supporting the first member and the second member, and the recess is formed over at least a part of an installation range of the support member in a plan view of the bearing pad.

Bearing pad for tilting-pad bearing, tilting-pad bearing, and rotary machine

A journal bearing includes: a carrier ring; a plurality of bearing pads disposed on a radially inner side of a lower half region of the carrier ring, and configured to support a rotor shaft from below; and a guide metal disposed in an upper half region of the carrier ring, in center with respect to an axial direction of the rotor shaft, so as to cover an upper region of an outer peripheral surface of the rotor shaft.

Journal Device and rotary machine

A bearing device includes a carrier ring, a first bearing portion disposed along an outer periphery of a rotor shaft on a radially inner side of the carrier ring; a second bearing portion disposed along the outer periphery and downstream of the first bearing portion, with respect to a rotational direction of the rotor shaft, on the radially inner side of the carrier ring; a pair of side plates disposed along the outer periphery of the rotor shaft, on both sides of the carrier ring with respect to an axial direction; a first oil guide portion disposed downstream of the first bearing portion and upstream of the second bearing portion, and configured to change a flow direction of oil after passing through a gap between an inner peripheral surface of the first bearing portion and an outer peripheral surface of the rotor shaft to guide the oil.

Bearing device and rotary machine

A journal bearing includes: a carrier ring; a plurality of bearing pads disposed on a radially inner side of a lower half region of the carrier ring; a pair of side plates disposed on both sides of the plurality of bearing pads with respect to an axial direction of the rotor shaft; and at least one oil-supply unit for supplying lubricant oil to the plurality of bearing pads. From among the at least one oil-supply unit, a first oil-supply unit disposed on a downstream side of a most downstream pad positioned most downstream of the plurality of bearing pads is configured to supply the lubricant oil toward a region below a corner portion of the most downstream pad, of a trailing edge surface of the most downstream pad, the corner portion being formed by an intersection between a pad surface of the most downstream pad and the trailing edge surface.

Journal device and rotary machine

A journal bearing includes: a carrier ring having a cylindrical shape; at least two bearing pads disposed on a radially inner side of the carrier ring and configured to support a rotor shaft; at least one oil-supply unit disposed on the radially inner side of the carrier ring, for supplying lubricant oil to a gap between the bearing pad and the rotor shaft; a pair of side plates disposed on both end portions of the carrier ring with respect to an axial direction, along an outer periphery of the rotor shaft; and at least one opening configured to bring a bearing interior space surrounded by the at least two bearing pads and the pair of side plates into communication with atmosphere, and discharge the lubricant oil to outside via the bearing interior space.

A bearing device includes: a carrier ring; a first bearing portion disposed along an outer periphery of a rotor shaft on a radially inner side of the carrier ring; a second bearing portion disposed along the outer periphery of the rotor shaft and downstream of the first bearing portion, with respect to a rotational direction of the rotor shaft, on the radially inner side of the carrier ring; and a pair of side plates disposed along the outer periphery of the rotor shaft, on both sides of the carrier ring with respect to an axial direction. In a carrier-ring side region of an inner peripheral surface of each of the side plates, a groove extending in a circumferential direction along a side surface of the first bearing portion is formed at least in a part of an extending range of the first bearing portion.

A journal bearing includes: a carrier ring having an annular shape; a first bearing pad disposed on a radially inner side of a lower half region of the carrier ring and configured to support a rotor shaft from below; a first oil-supply unit disposed immediately before and upstream of the first bearing pad; a pair of side plates disposed on both end portions of the carrier ring with respect to an axial direction, along an outer periphery of the rotor shaft, Each of the side plates includes: a first region; and a second region which is positioned above the first region, and in which a gap between an inner peripheral surface of the side plate and an outer peripheral surface of the rotor shaft is narrower than that in the first region.

A journal bearing includes: a carrier ring; a plurality of bearing pads disposed on a radially inner side of a lower half region of the carrier ring and configured to support a rotor shaft from below; a pair of side plates disposed on both sides of the plurality of bearing pads, with respect to an axial direction of the rotor shaft; and a dam disposed on a radially inner side of the carrier ring, in a downstream section of an upper half region of the carrier ring, and configured to suppress a downstream flow of carried-over oil. A gap is provided between inner peripheral surfaces of the respective side plates and an outer peripheral surface of the rotor shaft, for bringing into communication an outside and a bearing interior space surrounded by the pair of side plates.

Journal bearing and rotary machine

A journal bearing includes a carrier ring, a plurality of bearing pads disposed on a radially inner side of a lower-half region of the carrier ring and configured to support a rotor shaft from below, and a pair of side plates disposed on both sides of the plurality of bearing pads with respect to an axial direction of the rotor shaft. Each of the side plates includes a first region including a circumferential range upstream of a first bearing pad positioned furthest upstream among the plurality of bearing pads, and a second region positioned upstream of the first region and has a larger distance between an inner peripheral surface of the side plate and an outer peripheral surface of the rotor shaft than that of the first region.

A shaft sealing mechanism () that partitions an annular space () that is formed between a fixed part () and a rotating shaft () into a high-pressure-side region and a low-pressure-side region, that obstructs the flow of a fluid (G), and that is provided with: a plurality of annularly laminated thin-plate seal pieces () that are fixed to an annular seal housing () that is provided to the fixed part and are in sliding contact with the rotating shaft; and an annular low-pressure-side plate () that is sandwiched and held such that a low-pressure-side gap (&#x3b4;L) is formed between the seal housing and a low-pressure-side side edge part () of the thin-plate seal pieces. The thin-plate seal pieces have a thick part () that is formed further to the inside in the radial direction of the rotating shaft than an inner-circumferential-side tip part () of the low-pressure-side plate.

Shaft sealing mechanism

A shaft seal structure capable of preventing a seal body of the shaft seal structure of a rotation body from being held in an inclined posture even when the seal body is inclined is provided. It includes, an accommodation body (), a seal body () including thin plate seal pieces (), and a plate body () covering one end in the axial direction () of the seal body (). A recessed portion () recessing in the axis direction, and a protruding portion projecting to the other side from the recessed portion () are formed on one of the plate surface () of the plate body () and the inner wall surface () of the accommodation body (). When the protruding portion abuts the other side and a pocket (X), the recessed portion () communicates with the pocket (X) and the fluid low pressure region.

Shaft seal mechanism and rotary machine provided with same

Growing community of inventors

Tokyo, Japan

Tanehiro Shinohara