Abstract: An improved model steam generator for simulating the conditions within a nuclear steam generator in order to monitor the condition of the heat exchange tubes and tubesheet of the nuclear steam generator is disclosed herein. The improved model steam generator includes a highly effective separator assembly for separating water droplets entrained within the steam flowing out of the outlet of the secondary side of the generator formed from a plurality of separator grids, each of which includes an array of semi-cylindrical deflector members. The grids are vertically stacked with the deflector members transversely disposed to the flow of steam generated by the model steam generator. Each of the parallel arrays of deflector members in each grid is angularly disposed approximately 45.degree. to the deflector members in the grids above it and below in order to provide a tortuous path for the flow of steam ascending therethrough.

Abstract: An apparatus for controlling a starting operation of a boiler which comprises a super heater, a super heater bypass valve, a turbine bypass valve and a fuel flow rate regulating valve. A temperature detector detects a temperature of the steam at a predetermined portion of the boiler. A pressure detector detect a pressure of the steam at the predetermined portion of the boiler. A desired change rate arithmetic unit calculates a desired steam temperature change rate value and a desired steam pressure change rate value on the basis of the steam pressure, the steam temperature, a desired pressure increase value, a desired temperature increase value, a saturated temperature change rate limit and a temperature increase change rate limit.

Abstract: This invention relates to an improved hot water heater and more particularly to a hot water heater which is normally utilized in conjunction with a hydronic boiler. The hot water heater has a single opening which is closed by a removable cover plate. The tank is provided with a corrosion resistant lining which also defines the opening and is so related to the tank so as to resist fracture under normal usage. The single cover plate carries all fluid connections of the tank and by removing the cover plate, all components of the hot water heater may be removed from within the tank for repair or replacement. The components carried by the cover plate include a hot water supply pipe or tube which extends through the heat exchange coil and terminates in an opening near the top of the tank. This tube or pipe is preferably formed of an insulated material or is insulated so that hot water passing therethrough is not cooled by the colder water in the bottom of the tank.

Abstract: In a system for controlling a number of central heating boilers of large capacity having means for switching-off each boiler when the flow temperature reaches a predetermined maximum, the temperature at which each boiler is switched on again can be automatically varied in dependence upon the outside temperature in such a manner that as the outside temperature rises the boiler is switched on at progressively lower boiler flow temperatures, thus increasing the length of the boiler cycles. This is achieved by a boiler cycling controller which receives signals from temperature detecting devices located externally of the building and in the water flow and return lines and is operable automatically to vary the point at which the boiler is switched on.

Abstract: A system for recovering drain which recovers two or more flows or drain of different temperatures, which is applied to a generating plant provided with feed-water heaters in which drain is recovered into a condensation system downstream from a condenser through a drain tank by a drain pump and which comprises a high temperature recovered drain inlet, which is at high temperature and contains much flush steam, and a low temperature drain inlet. The high temperature recovered drain inlet is positioned at a lower part and the low temperature side drain inlet is positioned above the former. This system effects efficient degassing of drain which has high content of dissolved oxygen and efficient control of dissolved oxygen.

Abstract: Disclosed is an isolator for preventing fumes from the engine compartment and exhaust of a motor vehicle from entering a curbside blower intake of the vehicle. In a preferred form, the isolator also establishes an air curtain which projects outwardly adjacent the windshield, to deflect forward moving exhaust fumes from entering the blower intake.

Abstract: A stoking plant for fuel in whole bales, where the bales are conveyed on a transport tract (8) from a store and stoked in the whole condition into one of a number of combustion furnaces (2) with boilers (1), comprises a slide-gate (10) through which a bale transport carriage (5) can be filled with a bale of fuel. The transport carriage (5) then conveys the bale forward to the furnace (2) which is in need of fuel. When the bale transport carriage is positioned opposite the stoking door (4) of the furnace, a cover door (6) is released which is pressed against the carriage (5) by springs (13), a switch element is activated and the stoking door (4) is opened, and the bale is pushed into the furnace (2) by a piston (7). The piston (7) is withdrawn, but in such a manner that the furnace door (4) is closed before the cover door (6) is withdrawn to the start position. The bale transport carriage (5) is a tubular carriage which travels on running rails (9).

Abstract: The invention relates to a method of destroying and vaporizing refuse, primarily household waste. The material is fed into a shaft furnace, in which the material is subjected to a vaporization and combustion process in at least three zones, said zones being produced by the supply of blast air at least at three different levels in the shaft furnace which blast gas completely or partly is supplied with controlled quantities of thermal energy by means of electricity, preferably by using at least one plasma generator. The gas produced by the process is withdrawn through an annular drum, arranged about two thirds of the way up the shaft furnace. The gas leaving can be used as combustion gas e.g. for district heating plants and steam power stations with varying thermal requirements.

Abstract: A heater comprising two separate tube nests of which one (29) heats the circulating water by condensation and supercooling and the other (39) heats a partial flow of this water by the desuperheating of steam. Steam is admitted through pipe (16). The foregoing partial flow of water comes from the desuperheating zone of a heater located downstream and is admitted through a manifold (41). Pipes (39) are wound round a central drum (43).

Abstract: Three burners are supplied with pulverized fuel entrained in air from a splitter and are brought to combustion under optimum conditions by adjustment of the secondary air flow to each. The rates of flow of primary and secondary air are determined and signals from these, and a representation of the total fuel supply are supplied to a computer by which the amount of fuel flowing to each burner is deduced from the ratio of the air supplied to the burners.

Abstract: The invention is directed to an arrangement for vitrifying highly radioace waste solutions. The arrangement has a glass melting furnace and a wet scrubber for scrubbing particles of dust out of the offgas from the glass melting furnace. The offgas is passed from the glass melting furnace into the wet scrubber through an offgas conduit. The solids in the offgas are deposited in the offgas conduit. In order to counteract the disadvantageous consequences of such deposits, the offgas conduit includes two conduit lengths. The glass melting furnace is connected to one end of a first one of the conduit lengths via a connecting conduit stub mounted on the melting furnace and the wet scrubber is connected to one end of the second conduit length via a connecting conduit stub on the scrubbers. The two conduit lengths extend upwardly and are inclined toward each other so that they interconnect at their respective other ends.

Abstract: A model steam generator including an improved feedwater system for monitoring the conditions of the heat exchange tubes within a nuclear steam generator is disclosed herein. The feedwater system generally comprises a first conduit fluidly connected between the boiler vessel of the model steam generator and the feedwater of the nuclear steam generator via a first valve, and a second conduit which is fluidly connected between this boiler vessel and a feedwater reservoir by way of a second valve. The feedwater reservoir is in turn connected to a source of demineralized, deaerated water by means of a third conduit having a third valve. This reservoir is further fluidly connected to the feedwater of the nuclear steam generator by means of a fourth conduit having a fourth valve. The improved feedwater system of the invention gives the operator three running options. First, he may run the model steam generator directly off the feedwater used in the nuclear steam generator.

Abstract: A mobile coal-fired fluidized bed furnace system (10) is provided for generating steam to power a locomotive. Coal is combusted within the fluidized bed furnace chamber (30) in the fluidizing air to produce a hot flue gas which pass from the furnace chamber (30) through a boiler tank (90) and an economizer (34). The steam generated in the boiler bank and the walls of the furnace chamber is collected in steam drum (40) and passed therefrom through an in-bed superheater (100) and thence to the power generating means (22) to produce the power which drives the locomotive.

Abstract: A method of lifting and supporting structures, such as buildings or the like, which includes the steps of exposing the base of the structure; attaching a shoe to the base of the structure and then attaching a driving assembly to the shoe whereby the assembly may be utilized to successively and individually drive piers beneath the structure. After the piers are driven a separate pier plate unit is fitted over the end of each of the piers, which piers have been cut off at ground level. Once in place, the pier plate unit is used to support lifting means which operate between the pier plate unit and the structure to lift the structure to the desired position. After the structure has reached this position permanent, adjustable supporting means are placed between the pier plate unit and the structure whereby to retain the structure in the desired position.

Abstract: An auxiliary foot actuated gearshift for a motorcycle is disclosed wherein an independent pivot shaft is established at the near midpoint location of the auxiliary gearshift lever in such a manner so that downward pressure on the auxiliary gearshift at the pedal (outboard) end causes an upward pressure on the opposite (inboard) end which rests against the under side of the existing gearshift lever. This action pushes the existing gearshift up and allows the operator to shift from the low range of gears to the high range of gears by applying downward pressure on the auxiliary gearshift. Since the original existing gearshift has not been altered by the installation of the auxiliary gearshift, shifting from the high range of gears to the low range of gears is accomplished by downward pressure on the original existing gearshift. All shifting therefore can be accomplished by downward pressure on either the existing or the auxiliary gearshift.

Abstract: A thermal plant comprises a clear blue flame burner and a multi-tank boiler of stainless steel. The burner has a nosepiece welded to the boiler and a rear portion removably fixed to the nosepiece. The rear portion of the burner includes a labyrinth pathway for preheating the combustion air and a thermally insulating conduit for feeding fuel to an atomizer. The boiler has its furnace delimited by two water tanks, i.e. a main peripheral tank and end tank located downstream of the furnace and delimiting with the main tank a gap through which flue gases are conveyed to give off heat to the water in the tanks.

Abstract: The device includes a pair of rollers through oppositely disposed notches through the wall of a tubular section to engage opposite sides of the shaft of a surgical instrument that is through the bore of the tubular section. The tubular section is slideable in a sleeve element and the ends of the rollers are rotatably received in the respective slots of two pairs of slots in the walls of the sleeve element. A pad removably mounted on one end of the sleeve element has a central opening for the instrument shaft to pass through. The pairs of slots converge in the direction of the end of the sleeve element on which the pad is mounted to a distance apart not less than the distance between the bottoms of the notches in the tubular section.

Abstract: The invention relates to a refrigeration circuit which includes a second expansion means and a flow self-operated regulating valve, which controls the quantity of refrigerant to an intermediate suction port of compressor depending on a difference of pressure at the side of inlet from at the side of outlet of the expansion capillary.

Abstract: A sludge collection system for a vertically oriented nuclear steam generator is provided with an upwardly open chamber for receiving separated liquid and incoming feedwater that contain sludge particulates. A plurality of sludge collecting containers are positioned within the chamber and include a top rim encompassing an opening leading into the interior of each container. Generally flat perforated covers are positioned over each container such that a gap is formed between the cover and the adjacent top rim. Particulate material in the water entering the container can settle within the container because of relatively stagnant conditions. Sludge agitation and removal means are provided for remotely cleaning the containers. The sludge collection system components are sized to permit retrofitting this system into existing steam generators.

Abstract: This invention relates to a modified furnace for treating low-quality acid gas streams (those containing less than fifty percent (50%) hydrogen sulfide) to permit stable operation of combustion to provide a Claus furnace effluent. The system comprises burning a fuel gas and indirectly supplying the heat of this combustion to the hydrogen sulfide oxidant reaction wherein the hydrogen sulfide is converted to sulfur and other sulfur-containing products.