摘要:
An additive for synthetic resins includes a [liquid rubber]/[polyester] block copolymer comprising block liquid rubber compound parts and block polyester parts as constituent segments. One or more of these polyester blocks are connected to each one of the polydiene block parts through ester bond.
摘要:
Disclosed is a control system for a centrifugal thin film dryer wherein a slurry including solid matter is fed to a tubular heating surface and the a slurry is heated while blades are rotating inside the heating tube so that the a slurry turns into dry powder, the system comprising a plurality of thermal sensors located on the heating surface, a dry-up point calculator which measures the temperature distribution along the heating surface in accordance with the signals provided by the thermal sensors and calculates the point at which the temperature rise begins to saturate, a flow rate setting device which calculates the quantity of a slurry to be supplied in accordance with the output of the dry-up point calculator, and a flow rate regulator which controls a pump in accordance with the signal provided by the flow rate setting device.
摘要:
A method of automatically measuring the flexure value of a wire electrode 1 in a wire-cut electric discharge machine, such that at a measurement point in the course of electric discharge machining, the electric discharge is temporarily stopped, and whether or not a wire electrode 1 and a workpiece 2 come into contact is sensed by a contact sensing device 107a. The wire electrode 1 and the workpiece 2 are moved relatively to advance or retreat in accordance with a sensed touch signal TS, and a distance .epsilon..sub.1 of movement until the contact state changes is measured. The flexure value .epsilon. is calculated from the measured movement distance .epsilon..sub.1 and the size of the discharge gap.
摘要:
In a control apparatus for residual heat removal system for a nuclear reactor in which the steam generated in the reactor vessel is cooled and condensed into water through a heat exchanger and the condensed water is fed back by a feedwater pump driven by the reactor steam so as to cool the reactor core, the pressure of the condensed water at the exit of the heat exchanger is increased with the rise of the reactor water level so as to decrease the flow of the condensed water, that is, coolant water and the flow-in of the make-up water from the make-up water reservoir communicating with the outlet port of the condenser while the quantity of the reactor steam supplied to the turbine is decreased with the increase in the reactor temperature fall rate so as to decrease the flow of the coolant water fed back into the reactor vessel.
摘要:
An additive consisting of (poly)ethyleneglycol monocycloalkylether of a specified kind, (poly)alkyleneglycol or (poly)alkyleneglycol monoalkylether of another specified kinds, an organic phosphoric acid ester of still another specified kind and an antifoaming agent in a specified ratio, when used at a specified ratio, can provide hydraulic cement compositions with reduced bleeding of water after the placing and reduced dry shrinkage of hardened objects.
摘要:
Water-soluble vinyl copolymers with number average molecular weight 500-20000, having two specified repetition units at a specified molar ratio and a specified end group can serve as an effective agent for reducing a drop in the fluidity of hydraulic cement compositions.
摘要:
This invention relates to an automation system for nuclear power plants. This system comprises operation plan making means, supervisory control means, and control means for controlling controlled objects. The operation plan making means makes a new operation plan to restore a normal operating condition which existed before the plant condition deviated from the normal operation range. The supervisory control means outputs control commands according to an operation plan under abnormal condition when the plant operating condition deviates from the normal operation range. Furthermore, the supervisory control means outputs control commands according a new operation plan prepared by the operation plan making means after an operation according to an operation plan under abnormal condition has been finished. The control means for controlling controlled objects controls the controlled objects according to control commands output from the supervisory control means.
摘要:
Cement dispersion agents containing a graft copolymer composed of four kinds of constituent unit each having a specified structure can provide improved fluidity to cementing compositions, prevent slump loss after the kneading process and reduce the drying shrinkage of hardened concrete produced at the same time.
摘要:
A hardenable unsaturated polyester resin composition contains block copolymers and unsaturated polyester. The block copolymer includes both polyester blocks and a polydiene block as constituent segments.
摘要:
A control apparatus for electric power plant comprises turbine speed control means for detecting the speed of a turbine coupled to an electric generator to control the turbine speed by controlling a steam flow supplied to the turbine on the basis of the detected speed, pressure control means for controlling the pressure in a steam generator on the basis of the pressure of the steam generator, and correcting means for correcting the steam flow supplied to the turbine only when fluctuation in the pressure of the steam generator brought about by rapid change of a set load value is deviated from a predetermined range in which the steam pressure is allowed to vary, the correction of the steam flow being made in correspondence to the deviation.