摘要:
An aspect of the present disclosure is to precisely define a constant value used in the Monkman-Grant analysis, when estimating remaining life of a high-chromium steel pipe through which high-temperature and high-pressure fluid is allowed to flow. A remaining life estimation method according to the present disclosure is particularly characterized in that a step of obtaining a constant on an accelerated creep test is performed in which a constant indicative of the product of a strain rate and a rupture time in the Monkman-Grant analysis is obtained by multiplying a first coefficient to transform uniaxial rupture ductility into multiaxial rupture ductility, the uniaxial rupture ductility being obtained from a specimen of the high-chromium steel pipe, a second coefficient to amend consumed life of the specimen, and a third coefficient to amend a measured pressure into an assessment pressure.
摘要:
A repair method for repairing a crack generated to a cast steel member due to a thermal stress includes removing a part of the cast steel member including the crack at a surface of the cast steel member to form a recess, fitting into the recess a first repair member that is made of a metal that is more flexible than the cast steel member and that is weldable to the cast steel member, and spot welding the first repair member to the cast steel member.
摘要:
A power receiving device that receives electric power output from a power transmission device includes a primary side coil and supplies electric power to a load according to the electric power. The power receiving device includes: an adjusting device that adjusts a value of a third current to be a predetermined value, the third current is generated from the second current and supplied to the load; a detecting device that detects the third current; and a variable capacitor coupled between the secondary side coil and the load. The variable capacitor ensures a changeable capacitance value. The adjusting device performs an adjustment based on a detection result by the detecting device. The variable capacitor is coupled in series with the secondary side coil and the load. The adjusting device includes a first adjusting device that increases the capacitance value and a second adjusting device that decreases the capacitance value.
摘要:
According to an aspect, a hydrogen-containing water generating electrode includes: a positive electrode that is a tubular conductor and includes a plurality of openings in a side portion; an insulator that is provided on an outer peripheral portion of the positive electrode and is in contact with the positive electrode; and a negative electrode that is provided on an outer peripheral portion of the insulator, is a tubular conductor in contact with the insulator, and includes a plurality of openings in a side portion.
摘要:
The economical load distribution adjusting device 10 acquires an optimal hydroelectric output, optimal demand, and optimal power price from the supply-demand planning device 23, acquires the planned hydroelectric output planned by the water level planning devices 21, and acquires a planned demand planned by the hot water tank temperature control devices 22. The economical load distribution adjusting device 10 reduces the power price of the time at which the planned hydroelectric output exceeds the optimal output and makes the water level planning devices 21 replan the hydroelectric output, and raises the power price of the time at which the planned demand exceeds the optimal demand and makes the hot water tank temperature control devices 22 replan the amount of demand.
摘要:
A heat exchanger includes: a flow passage unit arranged with a plurality of planar flow passage bodies each arranged with two flow passages adjacent to each other in a same plane. The plurality of the planar flow passage bodies are layered in an intersecting direction that intersects with the plane. In two of the planar flow passage bodies adjacent in the intersecting direction of the plurality of the layered planar flow passage bodies, each one of two flow passage ports in both ends of each of the flow passages of one of the planar flow passage bodies is connected to each one of two flow passage ports in both ends of each of the flow passages of another of the planar flow passage bodies. A high-pressure pipe covers an outside of the flow passage unit.
摘要:
A gasification apparatus heats and pressurizes a gasification feedstock to bring the gasification feedstock into a supercritical state, and performs decomposition-treatment on the gasification feedstock to obtain fuel gas. The gasification apparatus includes a heat exchanger, a gas-liquid separator, and a turbine. The heat exchanger introduces the gasification feedstock into a low-temperature-side flow channel and introduces treated fluid in a supercritical state into a high-temperature-side flow channel, so that heat exchange is performed between the gasification feedstock and the treated fluid. The gas-liquid separator extracts, from the high-temperature-side flow channel, the treated fluid that has been in a subcritical state due to heat exchange, performs gas-liquid separation on the treated fluid, and returns a separated liquid to the high-temperature-side flow channel. The turbine is powered by fuel gas separated by the gas-liquid separator.
摘要:
A remaining service life evaluation method for evaluating a remaining service life of a metal pipe suffering from creep damage on a basis of a master curve that is prepared in advance that includes wrapping a steel strip around an outer peripheral face of the metal pipe under same conditions as those during an internal pressure creep test and evaluating a remaining service life of the metal pipe on a basis of a degree of deterioration of the steel strip.
摘要:
A wireless power transfer system includes a power receiving device and a plurality of power transmission devices that perform power transfer to the power receiving device. The power receiving device transmits request-power to the power transmission device, the request-power being power the power receiving device requests to be supplied with. The power transmission device, when receiving the request-power from the power receiving device, generates determination reference information based on the received request-power, the determination reference information being information to be used as a determination reference when the power receiving device selects the power transmission device, and transmits the generated determination reference information to the power receiving device. The power receiving device receives the determination reference information, selects the power transmission device from which the power receiving device is to receive power supply, and transmits a power transmission start request to the selected power transmission device.
摘要:
A tsunami breakwater wall of a multilayered steel pipe pile structure 1, includes a multilayered steel pipe pile 2 where a bottom end thereof reaches a predetermined depth of a support layer 28 and is installed to a ground 26 such that an upper end thereof protrudes upward from a ground surface 26a, and a wall body 15 constructed integral with a part of the multilayered steel pipe pile 2 that protrudes upward from the ground surface 26a. The multilayered steel pipe pile 2 is made from a plurality of large diameter steel pipe piles 3-5 of different diameters, an upper end of an inner most side steel pipe pile 3 protrudes upward from the ground surface 26a, and the wall body 15 is constructed to a part of the steel pipe pile 3 protruding upward from the ground surface 26a.