Abstract: To improve the thermal efficiency when an exhaust heat recovery type combined cycle plant having a gas turbine and a steam turbine in combination is operated at a partial load, the gas turbine exhaust is recirculated and returned to the compressor, and the combustion temperature is prevented from being lowered at the partial load. Preferably, the temperature is maintained constant. In this way, the thermal efficiency during operation at partial load can be improved.

Abstract: A truss type extruded aluminum section is formed of a pair of planar plates and ribs, wherein hollow portions are formed within said section by the ribs and the planar plates. Vibration-damping resin is provided on the inner surfaces of hollow portions, and particularly on the inner surface of the planar plate and on a single surface of the inclined rib. With this arrangement, the vibration energy bending the planar plate and the rib is converted into a heat energy. In the case of manufacturing such truss type extruded aluminum vibration-damping section, for making easy the insertion of the vibration-damping resin in the hollow portion, the vibration-damping resin is stuck on a plastic film to form a long planar body. The plastic film serves as a cover or an adhesive. Moreover, in the case of directly inserting the vibration-damping resin sheet, the vibration-damping resin sheet is subjected to embossing on the adhesive-bonding side for allowing air to escape.

Abstract: The present invention relates to a heat-bonded type vibration-damping resin for a structural member which contains in view of a preferable blending rate asphalt, synthetic rubber, petroleum resin and filler material, and further a heat-bonded type vibration-damping resin for a structural member which contains in view of a preferable blending rate asphalt, filler material, blowing agent. In addition, its basic concept consists in a configuration in which the vibration-damping resin is formed into a sheet and arranged at the surface of the metallic structure used at a place where vibration and noise should be prevented so as to form the vibration-damping structure and a method for manufacturing the vibration-damping structure. The vibration-damping resin can be easily mounted on the surface of the metallic structure having an elongated shape, bonded to it by heating and has a workability in which the mounting work to the metallic plate may be facilitated.

Abstract: To improve the thermal efficiency when an exhaust heat recovery type combined cycle plant having a gas turbine and a steam turbine in combination is operated at a partial load, the gas turbine exhaust is recirculated and returned to the compressor, and the combustion temperature is prevented from being lowered at the partial load. Preferably, the temperature is maintained constant. In this way, the thermal efficiency during operation at partial load can be improved.

Abstract: An ozone purifying apparatus comprises a float which is afloat in polluted water and which includes an ozone reaction region in which the polluted water is mixed with ozonide air for the purpose of carrying out an ozone processing on the polluted water and an oxidant removing region in which oxidant generated due to a reaction between the polluted water and the ozonide air in the ozone reaction region is removed. The ozone purifying apparatus does not occupy a wide space. Water levels in the float can be easily adjusted. Furthermore, the ozone purifying apparatus can be easily installed.

Abstract: A truss type extruded aluminum section (1) is formed of a pair of planar plates (2)(3) and ribs (4)(5)(6), wherein hollow portions (7)(8)(9) are formed within the section (1) by the ribs (4)(5)(6) and the planar plates (2)(3). Vibration-damping resin is provided on the inner surfaces of hollow portions (7)(8)(9), and particularly on the inner surface of the planar plate (3) and on a single surface of the inclined rib (4). With this arrangement, the vibration energy bending the planar plate (3) and the rib (4) is converted into a heat energy. In the case of manufacturing such truss type extruded aluminum vibration-damping section (1), for making easy the insertion of the vibration-damping resin in the hollow portion, the vibration-damping resin is stuck on a plastic film (11) to form a long planar body. The plastic film (11) serves as a cover or an adhesive.

Abstract: In fuel gasification, particles of, for example, coal and an oxidant are supplied to a reactor, where the coal particles are gasified. The gas thus produced may contain molten slag entrained therein and such slag could subsequently solidify and affect other components of the coal gasification apparatus. Therefore a molten slag cooling heat exchanger is positioned directly above the reactor and this cools the gas so as to cause any molten slag therein to solidify. Hence, such molten slag does not reach an evaporator above the molten slag cooling heat exchanger, so that the efficiency of the evaporator will be maintained. However, solidified molten slag may build up on heat exchange tubes of the molten slag cooling heat exchanger. Therefore, the rate of coolant supplied to the molten slag cooling heat exchanger is varied, to cause expansion and contraction which causes solidified slag to be dislodged. Hence the efficiency of the molten slag cooling heat exchanger does not deteriorate.

Abstract: A combined cycle power plant has a plurality of gas turbine units each having a gas turbine and a heat recovery boiler for generating steam from heat from exhaust gas from the gas turbine. The gas turbine of a first one of the gas turbine units is a steam-cooled gas turbine. Steam turbines are driven by steam from the heat recovery boilers. For start-up of the first gas turbine unit, cooling steam generated in a heat recovery boiler different from not being the heat recovery boiler of the first gas turbine unit is fed to the steam-cooled gas turbine to effect cooling thereof during at least part of the start-up operation of the first gas turbine unit.

Abstract: A pressurized fluidized bed combustion combined cycle power plant has a gas turbine unit of single spindle type in which a turbine, driven by combustion gas from burning of coal in a pressurized fluidized bed combustion boiler, drives an electrical generator at constant speed and drives a compressor supplying compressed combustion air to the boiler. To permit partial load operation, a control arrangement is provided to effect, in dependence upon an operating load of the boiler, control of at least one of the flow rate of the combustion air into the boiler, and the operating pressure in the combustion chamber of the boiler. The control arrangement may be, for example, a valve controlling a by-pass flow of the combustion air and/or inlet guide vanes of the compressor.

Abstract: A dust collecting cell for a dust collector has a plurality of first electrode plates, a plurality of second electrode plates each disposed between the adjoining two of the first electrode plates in a parallel and spaced apart relation thereto, and a block defining a plurality of resistors having a high value of resistance which are connected between the first or second electrode plates and a source of high voltage supply. Even if a dielectric breakdown may occur between any two adjoining electrode plates, the resistors ensure that the discharge take place only as a local phenomenon, and that the cell make only a low noise accompanying the discharge.

Abstract: A breeding apparatus comprising a breeding water tank, an ozonizing device, an activated carbon device and a breeding water circulating device wherein breeding water of sea water or a mixture of sea water and plain water is circulated in series in these devices, and the ozonizing device is located at the upstream side of the activated carbon device with respect to the flow of the breeding water.

Abstract: A water ozonization system equipped with a filter in that water can be treated with ozone through the steps of installing a diverging pipe therein to allow part of raw water to diverge from the discharge side of a raw water pump, the diverging pipe being fitted with an ejector; injecting and introducing the ozone obtained from an ozonizer into the ejector via its suction port in order to form ozonous water; returning the ozonized water via a diverging pipe to the suction side of the raw water pump; and supplying the ozonous water and unreacted ozonizing gas to the whole quantity of raw water within the limit to which the raw water pump produces no cavitation so as to increase ozone absorption efficiency with the agitation of pump impellers for accelerating ozonization and the reaction of the unreacted ozonizing gas in the raw water pump on the whole quantity of the raw water by ozonizing means.

Abstract: A water ozonization system equipped with a filter in that water can be treated with ozone through the steps of installing a diverging pipe therein to allow part of raw water to diverge from the discharge side of a raw water pump, the diverging pipe being fitted with an ejector; injecting and introducing the ozone obtained from an ozonizer into the ejector via its suction port in order to form ozonous water; returning the ozonized water via a diverging pipe to the suction side of the raw water pump; and supplying the ozonous water and unreacted ozonizing gas to the whole quantity of raw water within the limit to which the raw water pump produces no cavitation so as to increase ozone absorption efficiency with the agitation of pump impellers for accelerating ozonization and the reaction of the unreacted ozonizing gas in the raw water pump on the whole quantity of the raw water by ozonizing means.

Abstract: A drinking water purifying apparatus for purifying water from a water service comprises an ozone generating means for producing ozonized gas, an ozone reaction means for reacting the ozonized gas from the ozone generating means with the water from a water service, and a treating means for treating the water obtained by reaction to the ozonized gas in the ozone reaction means, whereby drinking water being free from organic compounds and smelling substances and having good taste can be obtained.

Abstract: A compact ozone generating apparatus is constituted by a housing fixedly mounting a high voltage transformer casing from which projects a high voltage bushing and which casing fixedly mounts the open end of a cylindrical ground electrode tube of an ozonizer about the high voltage bushing with a brush internally of the cylindrical ground electrode tube directly connecting the high voltage bushing to the ozonizer. The ozonizer further includes an electric glass discharge tube mounted coaxially internally of the cylindrical ground electrode tube with its open end proximate to the open end of the cylindrical ground electrode tube and being spaced therefrom. A conductive bar projects from the high voltage bushing is connected to the brush which spans across the interior of the electric glass discharge tube adjacent its open end and whose ends contact a conductive film lining the inner surface of the electric gas discharge tube.

Abstract: The disclosure describes a lifting apparatus used to raise and lower a device such as a water quality detector installed outdoor. It comprises a cylindrical body in which main elements are contained, a slit formed in the cylindrical body along the axial direction, a movable body having a guide plate which is fitted into the slit and is connected with both ends of a chain, the chain being wound between a sprocket placed at the upper inner portion of the cylindrical body and the sprocket of a driving means so as to be driven to raise or lower to guide plate and the movable body connected to the guide plate.

Abstract: An elevator particularly suitable for outdoor uses for lifting up and down a water examining instrument, in which a water examining instrument (3) is swingable into a horizontal position from a vertical position or vice versa upon rotating an arm (16) by a handle (12) through a worm (14) and a worm wheel (15), the arm (16) being also turnable in a horizontal plane upon rotating a support column (5) by a handle (18).

Abstract: A combination of a container and a lid is disclosed. The container has an open top and a frusto-conical or cylindrical side wall. The lid is formed with a tongue and provided with an adhesive layer on one side thereof. A release is fixed to the outside of the side wall of the container so that the lid is normally attached releasably thereto.

Abstract: An analog isolator includes a circuit wherein a power transformer has a primary winding for connection to an A.C. source, a first and second power take-off secondary windings and a first and second signal secondary windings. The A.C. signal of the first signal secondary winding is compared with an input signal to provide cross-over pulses. Those pulses are applied to control an isolator device such as a photocoupler. The output signal from the photocoupler is applied as gate control signals to control the selective gating of the signals from the second signal secondary winding. The selectively gated signals are applied either to a sample-and-hold arrangement or to an integrating smoothing circuit to provide effectively a reconstruction of the input signal but conductively isolated from the input circuit.