Mitsubishi Heavy Industries Limited

Mitsubishi Hitachi Power Systems, Ltd.

Mitsubishi Power, Ltd.

Mitsubishi Heavy Industries Aero Engines, Ltd.

Tomoyuki Onishi

Takahiro Miyamoto

Katsuhisa Hamada

Akio Kondou

Kensuke Futahashi

Tadayuki Hanada

Takumi Matsumura

Yasuyuki Uetsuki

Misaki Fukuyama

Takafumi Ota

Yohei Fujimoto

Hiroshi Sato

Makoto Kondo

Fumiyuki Suzuki

Keisuke Matsuyama

Yuichiro Waki

Tomohiro Ishida

Asaharu Matsuo

Shoki Yamashita

Takaaki Matsuo

Atsunori Mori

Ryutaro Fujisawa

Tomoshige Takata

Akio Kondo

Toshinari Nishimura

Yukihiro Otani

Shoichi Okawara

Hao Li

Tomoshi Yamasaki

An aircraft component is used for an aircraft gas-turbine engine. The aircraft component includes an annular part, a flange, and a boss. The annular part has an outer circumferential surface. The flange is formed at one end portion of the annular part in an axial direction. The boss projects from the outer circumferential surface of the annular part to the radial direction. On a section cut along an axial direction of the annular part, the outer circumferential surface of the annular part between the flange and the boss has a taper part that is formed into a tapered shape in which plate thickness becomes thicker from the flange toward the boss.

Aircraft component and aircraft gas-turbine engine

A turbine casing comprises: a turbine casing body, which covers a rotor of a steam turbine from the outer side, and in which is formed an exhaust port through which steam is horizontally exhausted; an overhanging part that horizontally widens from the outer surface of the turbine casing body; and a support part that supports the overhanging part on a baseplate; the support part restraining vertical displacement of the overhanging part relative to the baseplate, and securing the overhanging part to the baseplate so as to allow the overhanging part to be horizontally deformed or displaced.

Turbine casing and steam turbine

This optical sensor includes an illuminating optical fiber, a first light receiving optical fiber, a second light receiving optical fiber, and a measuring unit. An intersection of a reflected light entering the first light receiving optical fiber and the reflected light entering the second light receiving optical fiber is located on a front end surface of a sensor head or is closer to the peripheral surface of a moving body (a rotating body) than the front end surface of the sensor head is. This can compensate for effects of thermal expansion and accurately measure a clearance.

Optical sensor and rotating machine

In a rotary machine that includes rotating body including a rotating-body main body and a pair of rotor shaft ends fixed to the both outer sides in the shaft direction of the rotating-body main body; a casing accommodating the rotating-body main body and being penetrated by the rotor shaft ends; a bearing rotatably supporting the rotor shaft ends and having a bearing face being provided with lubricant fluid from a lubricant line; and the support part supporting the casing, the support part is cooled through heat exchanging between the lubricant fluid the support part.

Cooling device for casing support part of rotary machine, rotary machine, and cooling method for casing support part of rotary machine

An aircraft component is used in a gas turbine engine for an aircraft. The aircraft component includes an annular part having an outer peripheral surface, and a boss part protruding from the outer peripheral surface of the annular part in a radial direction. In the boss part, at least two through-holes are formed to penetrate the boss part in the radial direction at predetermined intervals. In the boss part around the two through-holes, a cut-out part where a part of the boss part is cut out is formed.

Aircraft component and gas turbine engine for aircraft

A clearance measurement device is a device for measuring a clearance between an inner peripheral surface of a casing and an outer peripheral surface of a rotary body. This device: emits light having a first wavelength and a second wavelength, respectively, towards the outer peripheral surface of the rotary body; receives the light reflected from the outer peripheral surface via a first filter having a transmission band corresponding to the first wavelength and via a second filter having a transmission band corresponding to the second wavelength; and measures the clearance based on a time difference of the moment to detect the rotary body.

Clearance measurement device, clearance measurement sensor, and clearance measurement method

An on-off valve of the present invention includes a valve box which includes an inlet flow path of steam and an outlet flow path which communicates with the inlet flow path through a communication bole, a stop valve body which opens or closes the communication hole, and a stop valve support portion, in which the outlet flow path extends in a direction intersecting the opening direction of the communication hole toward a downstream side in a flow direction of the steam, and a minimum wall thickness of the valve box is smaller than a minimum wall thickness of the valve box.

On-off valve and steam turbine

This steam turbine system is provided with a first support rod () which is disposed in an outer casing () and extends in one direction. The first support rod () includes a first end (A) which is connected to a surface, of an inner surface () of an upper half of an end plate (), on a first side in a lateral direction of an axial line of a rotor. The first support rod () includes a second end (B) which is connected to an inner surface () of a ceiling plate () which is disposed further on a second side in the lateral direction of the outer casing () than the first end (A).

Steam turbine system

A clearance measurement device is for measuring a clearance between an inner peripheral surface of a cylindrical casing and an outer peripheral surface of a rotating member configured to rotate in the casing. The clearance measurement device includes a marker provided to the outer peripheral surface; an optical sensor attached to the casing, and configured to emit light toward the outer peripheral surface, receive light reflected from the rotating member, and detect the marker based on a change in amount of the received reflected light; and a measurement controller configured to perform signal processing on signals from the sensor. The sensor includes light reception fibers disposed such that optical axes intersect and having a measurement region on the outer peripheral surface, and planar light sources provided in a row along a rotating direction and each configured to emit light in a manner overlapping with the measurement region.

Clearance measurement device and clearance control system

An optical sensor includes an optical fiber disposed in such a way that an end surface thereof is exposed in a distal end surface () of a sensor head (). The optical sensor includes: a first plate material (first metal plate) () in close parallel contact with the distal end surface of the sensor head, and in which a through-hole is formed in a position corresponding to the end surface of the optical fiber; and a second plate material (second metal plate) () disposed parallel to the first plate material (first metal plate) and toward the front thereof in a measuring direction, and in which a through-hole is formed at a point of intersection with a virtual straight line perpendicular to the end surface of the optical fiber. With this optical sensor, it is possible for clearance measurement to be performed even if the optical fiber becomes opaque or worn.

Optical sensor

A steam turbine casing includes a lower half part having a plurality of lower support portions projecting horizontally around a lower half part body; an upper half part connected onto the lower half part; a support member fixed to an upper surface part of a respective one of the lower support portions; and a plurality of support columns each having a lower end part on a frame and an upper end part to which a lower surface part of the support member fixed to a corresponding one of the lower support portions. Thus, thermal deformation of the casing is suppressed, and a suitable clearance can be maintained between the casing and a turbine.

Steam turbine casing

An optical fiber probe includes a probe body, an optical fiber, and a position regulating member. The probe body has a first bottom plate with an outer surface, a second bottom plate opposite to the first bottom, and an internal space. The optical fiber is housed in the internal space. The position regulating member is attached to the probe body. The optical fiber includes a small-diameter portion and a large-diameter portion. The first bottom plate has an inner surface in the internal space and a through hole for communicating the outer surface and the inner surface. The small-diameter portion is inserted into the through hole. The large-diameter portion is arranged such that a first end face thereof is in contact with the inner surface while being bent by the position regulating member in contact with a second end face thereof.

Optical fiber probe, optical fiber measuring device, and clearance control system

The present invention includes: a laser that can change the emission wavelength of light; a light-emitting fiber that emits light output from the laser onto a rotor; a concave surface that is provided in a recessed manner in the rotor and reflects the light emitted from the light-emitting fiber; a light-receiving fiber that receives the light reflected by the concave surface; a photodetector that detects the intensity of the light received by the light-receiving fiber; and a control device that controls the laser and performs optical measurement. The intensity is detected by the photodetector while changing the emission wavelength of the laser; the emission wavelength at which the intensity is largest is selected; and optical measurement is performed by detecting the intensity of light reflected by the concave surface by using light having an emission angle determined by the selected emission wavelength.

Optical measurement device, optical measurement method, and rotary machine

There is provided: a pair of slanted fiber groups; a pair of parallel fiber groups; a light source for emitting two slanted light beams from a pair of slanted light-emitting fibers, and emitting two parallel light beams from a pair of parallel light-emitting fibers; a target provided to the outer peripheral surface of a rotor; a pair of light-receiving elements for detecting the intensity of light received by each of a pair of slanted light-receiving fibers; a pair of light-receiving elements for detecting the intensity of light received by each of a pair of parallel light-receiving fibers; and a computation unit for performing a computation that includes an interval affected by thermal elongation on the basis of four waveforms indicating changes in the intensity detected by each of the light-receiving elements.

Optical measurement device, optical measurement method, and rotating machine

Provided is a steam valve () equipped with: a stop valve () capable of stopping/releasing the flow of steam when driven so as to open/close; an governing valve () that is provided coaxially in the interior of the stop valve (), and that controls the flow volume of the steam when driven to open/close in the same direction as the opening/closing of the stop valve (); and a first guide part () that is provided between the stop valve () and the governing valve () so as to separate the stop valve and the governing valve in the radial direction, and that guides at least the governing valve in the opening/closing direction.

Growing community of inventors

Tokyo, Japan

Tomoyuki Onishi