摘要:
A stage structure of an axial turbine includes a stationary inner ring, a stationary outer wall, a row of stationary blades mounted on the stationary inner ring and outer wall, a row of moving blades, and a shroud ring mounted on the tips of the moving blades. An annular solid substance, disposed immediately downstream of an axial gap formed between an axial end of the shroud ring and surface of the outer wall axially facing the axial end of the shroud ring, reduces an expansion space provided immediately downstream of the axial gap, whereby circulation of an ejection flow from a main stream through the axial gap is reduced so that the turbine stage efficiency is improved. The annular solid substance may be a ring fixed to the stationary outer wall, a protrusion or a cylinder formed by a portion of the outer wall.
摘要:
A method and system for effecting control governing of a steam turbine wherein the steam chamber of a first stage nozzle is divided into a plurality of steam compartments, control valves each connected to one of the steam compartments are individually operated for controlling the flow rate of steam introduced into the turbine, and the governing of the nozzle is effected by adjusting the flow rate of steam in accordance with a load. At low load, the degree of opening of the control valves is kept constant and the turbine is driven by steam of a reduced pressure by reducing the pressure of the steam at the inlet of the turbine so as to maintain, in a low load region, the volume flow rate of steam for a high load region. To cope with a change in the value of the load, the degree of opening corresponding to a predetermined change in the value of the load is set beforehand for each control valve. When the change in the value of the load is smaller than the predetermined change in the value of the load, the degree of opening of the control valve involved is adjusted. Conversely, when the change in the value of the load is greater than the predetermined change in the value of the load, the pressure of the steam at the inlet of the turbine is controlled.
摘要:
In moisture separator reheaters of a nuclear power plant, a control valve is mounted in a steam vent line of the plant to control the flow rate of vent steam in conformity with the load applied to the plant, to thereby avoid the occurrence of any instable flow phenomenon in the entire range of loads applied to the plant.
摘要:
In a camera equipped with both a standard lens and a telephoto lens which may be arbitrarily selected for exposures by manipulating a first control knob, a focusing device is provided which selects the focusing ranges or depths of field of the telephoto lens by a second control knob only in the case of the photography with the telephoto lens.
摘要:
A battery lid structure for an electronic device is provided which has a battery lid allowing a battery case to be opened when a battery lid body slides. A long engagement hole L-shaped in plan view is formed on a pressing plate to which the battery lid body is slidably attached. A lock lever section and a lock lever receiving section where an engagement section is formed are attached to the battery lid body so as to slide perpendicularly to the sliding direction. The engagement of the engagement section with a second long hole of the long engagement hole prevents the sliding motion of the battery lid body. During the sliding motion of the battery lid body, the engagement section engages with a first long hole of the long engagement hole. The wall surface of the long engagement hole is covered with a part of a plate spring body.
摘要:
The present invention relates to a camera with a built-in strobo which comprises a small strobo and a lens cover for protecting a photographing lens, the strobo operating when a flashing part is shifted to a predetermined position, and further comprises a member being in association with the lens cover and an operation knob for controlling a movement of the flashing part; and when the lens cover is disposed in front of the photographing lens, pop-out or stowing of the strobo can not be executed by controlling the member through manipulation of the operation knob.
摘要:
An ink composition for waterless lithography having good printing properties which makes it possible to print from a lithographic printing plate with one fluid without using any kind of water fountain system to mask a non-image area, said ink composition containing high-boiling petroleum solvent mixtures which have a boiling point higher than 200.degree. C. and which contain less than 5% by volume of aromatic components, and in addition to the above containing an aliphatic acid ester, an aliphatic dibasic acid ester and/or a phosphoric acid ester.
摘要:
A battery lid structure for an electronic device is provided which has a battery lid allowing a battery case to be opened when a battery lid body slides. A long engagement hole L-shaped in plan view is formed on a pressing plate to which the battery lid body is slidably attached. A lock lever section and a lock lever receiving section where an engagement section is formed are attached to the battery lid body so as to slide perpendicularly to the sliding direction. The engagement of the engagement section with a second long hole of the long engagement hole prevents the sliding motion of the battery lid body. During the sliding motion of the battery lid body, the engagement section engages with a first long hole of the long engagement hole. The wall surface of the long engagement hole is covered with a part of a plate spring body.
摘要:
A method for producing cold rolled titanium strips having good surface quality. The cold rolling of a titanium strip is carried out under the conditions represented by the following formula:X.ltoreq.(48673/Y.sup.1.3283)where X is an average grain size (.mu.m) of the pre-cold rolled titanium strip and Y is a diameter (mm) of the roll for the cold rolling.
摘要:
A combination of a film cartridge loading type camera with an electronic flash of the type wherein a flash lamp converts into a flash of light the energy stored in a main flash capacitor by a DC-DC converter. An optimum exposure may be ensured depending upon the speed of the film used, upon the distance to a subject and upon whether or not the flash is used.