摘要:
A device for confirming the operation of an electromagnetic actuator which comprises a fixed core, a moving core detachably opposed to said fixed core to form a closed magnetic path together with the fixed core, and an electric winding wound around the closed magnetic path. The device is for detecting the displacement of the moving core relative to the fixed core, wherein the point of time at which the displacement of the moving core due to a direct current flowing through the electric winding is finished is detected using transient variations of the waveform of the direct current. Having a simple structure, the device is small in size and weight, low in cost, and highly reliable in confirming the operation of the actuator.
摘要:
There is provided a method of monitoring a firing condition in a cement kiln, by measuring an intensity of spectrum of a radiation which radiation is emitted from a clinker being fired in a cement kiln, and processing the intensity of the spectrum to produce a parameter for monitoring the condition in the kiln, by correcting the intensity profile of the spectrum by interpolating a profile (range) which is deformed by the absorption with alkali atom(s) in an atmosphere of the kiln. Further, the absorption intensity of the spectrum at a sodium absorption wavelength and potassium absorption wavelength should be continuously measured and corrected by interpolating so as to produce a parameter for monitoring. An apparatus for monitoring a cement kiln, comprises an optical head collector equiped at a kiln hood of the kiln, to collect a radiation from a clinker being fired in the kiln, an optical fiber for transmitting the collected radiation, a spectrophotometer for analysing the collected radiation, which is connected to said optical fiber, and, a processor for processing said intensity of the spectrum measured by said spectrophotometer, outputing the processed data, and controlling the operation of the spectrophotometer. Further, the apparatus has said optical collector and said optical fiber mounted respectively on each of a plurality of the cement kilns, and a transfer switch(s) for selecting an optical head and an optical fiber connecting the kiln to be monitored, and then, a plurality of the cement kilns can be monitored.
摘要:
In a hybrid integrated circuit structure comprising a ceramic substrate having a hybrid integrated circuit including a circuit section which is liable to develop a lot of heat to become a higher temperature, the thickness of that portion of the ceramic substrate which has the circuit section liable to develop a lot of heat to become a higher temperature is significantly reduced. A heat dissipater or a cooling device is mounted on a back of the ceramic substrate at its thinner portion. The hybrid integrated circuit structure is produced by preparing a plurality of thinner ceramic substrate pieces; removing, with at least one of the ceramic substrate pieces being excluded, a portion of each of other ceramic substrate peices corresponding to a location having a circuit section which is liable to develop a lot of heat to become a higher temperature, thereby providing a cut-away portion, the printing of the circuit onto the ceramic substrate pieces being conducted before or after formation of the cut-away portion; bonding the at least one ceramic substrate piece having no cut-away portion to the ceramic substrate pieces having the cut-away portion by a bonding material to provide a hybrid integrated circuit board; and mounting a circuit component which is liable to develop a lot of heat to become a higher temperature onto the thinner portion of the hybrid integrated circuit substrate, and mounting a circuit component which develops no heat onto the thicker portion of the hybrid integrated circuit substrate, thereby forming a hybrid integrated circuit.
摘要:
A cyclone comprising a cylindrical portion and an inverted conical portion, the cylindrical portion having a gas inlet connected thereto in its tangential direction and a gas outlet perforated through a ceiling panel thereof, the gas inlet allowing the introduction of a gas including powders therethrough, the inverted conical portion being connected to the cylindrical portion under its lower edge and having a collected powder outlet at the lower end thereof, characterized in that the gas outlet is perforated through the ceiling panel of the cylindrical portion so that the central axis of the gas outlet may be coaxially coincident with the central axis of the cylindrical portion; a cylindrical exhaust gas guide is disposed under the ceiling panel so as to surround the periphery of the gas outlet; and when a cross section of the cylindrical portion is separated into four sectors by an imaginary line passing through an intersection of an inner wall of the gas inlet and the cylindrical portion and passing through the center of the cylindrical portion, and another imaginary line passing through the center of the cylindrical portion and crossing the above-mentioned imaginary line at right angles, and when these four sectors are names a first, a second, a third and a fourth quadrant from the above-mentioned intersection in a gas revolving direction order, the cylindrical exhaust gas guide is formed so that a maximum value of a space between the cylindrical exhaust gas guide and an inner wall of the cylindrical portion may lie in the first quadrant and so that a minimum value of the space therebetween may lie in the fourth quadrant.
摘要:
A composite sintered material having high permeability and permittivity which is obtained by mixing a ferrite with a perovskite compound and sintering the mixture, a reaction phase being formed between ferrite particles or between ferrite particles and particles of perovskite compound. The material has a relatively high magnetic loss and dielectric loss.
摘要:
A method of manufacturing a multi-type fixing tool (15) for prestressed concrete, in which a plurality of fixing tool units (10) is inserted into a cylindrical mould, a thermosetting synthetic resin is poured into the mould so as to form a cylindrical moulded shape (13), a fibre (14) is wrapped around the cylindrical surface of the moulded shape (13) while a thermosetting synthetic resin is impregnated in the fibre (14), and then the impregnated resin is hardened.