US1736411A - Steam-generating installation - Google Patents

Description

Nov. 19, 1929. F. LOSEL STEAM GENERATING INSTALLATION Filed Aug. 3, 1923 Patented Nov. 19, 1929 PATENT QFFEE FRANZ LosEL, or BRULNN, CZECI-IOSLOVAKIA STEAM-GENERATING INSTALLATION Application filed August 3, 1923, Serial No. 655,468, and in Germany August 5, 1922.

The present invention relates to a steam generating installation or system including economizers or feed-Water heaters, particularly economizers of lower pressure than the t boiler fed therefrom, which economizers are arranged in the outlet fine for the fumes or furnace gases and an accumulator system connected therewith, and has for its objects to permit with an exceedingly simple arrangement an efiicient utilization of the heat contained in the fumes or furnace gases being discharged, the accumulating of excess of preheated economizer feedwater, not necessary for boiler feed and in certain cases also interchange of feedwater and heat, the adaptation of a better feed heater installation to the working conditions in the boiler, a better regulation and flexibility of the feedwater preheating system to avoid irregularities in the operation thereof and the storage of excess steam of the whole installation and sat isfaction of the demand for low pressure steam and hot water for various purposes whereby a very economical heat utilization is obtained and the efliciency, reliability and performance improved.

In accordance with the invention these results are attained by connecting suitably the accumulator system with the economizers feeding the boilers and independent therefrom by working or operating the heat and hot water accumulating system at a substantially lower pressure than that of the boiler and utilizing the accumulator system as a low pressure storage unit for the whole installation, the accumulators being not only arranged to receive hot water, particularly the excess hot water from the economizers but also to store up excess steam and to supply low pressure steam.

An embodiment of the invention is illustrated diagrammatically in the accompanying drawing.

The drawing shows a steam generating installation in which two preheaters 1 and 1 are arranged one behind the other in the flue passage a and are coupled together. A pump 2 delivers feed water originally at a pressure p to preheater 1 at a higher pressure 77 and a pump 3 at the delivery end of the preheater 1 delivers all or part of the preheated water from the preheaters 1 and 1 to the boiler (not shown) at a pressure 22 Preheater 1 is connected by a pipe 5 with an accumulator 4 arranged in accordance with the invention as a low pressure steam heat and hot water storage unit. For this purpose it operates, as does the preheater 1, with a substantially lower pressure 79 than does the preheater 1. Similarly associated with preheater 1 and connected thereto by a pipe 5" is an accumulator 4 adapted to operate at the pressure 32 of the preheater 1, which pressure is lower than the pressure p in the feed line through which pump 8 supplies the feed water to the boiler. By means of valves 6, 7 and 6, 7 the storage chambers 4 and 4 may be connected with or disconnected from their associated preheaters. Through pipes 13 and 13 provided with cut-off on regulating valves 14 and 14 respectively, excess hot water or steam from the boilers, engines, other steam consumers or any points of the plant where excess heat is available and of pressures p and [9 which must be respectively somewhat greater than p and 79 is led to the heat and hot water accumulators 4 and 4. To withdraw hot water there are provided pipes 8 and 8' connected respectively with the water spaces of accumulators4 and 4 and to withdraw low pressure steam there are provided pipes 10 and 10 connected respectively with the steam spaces of accumulators 4 and 4, each of the pipes 10 and 10 including a steam drier or superheater as shown. Regulating or cut-off valves 9 and 9 are interposed in pipes 8 and 8 and similar valves 11 and 11 are located in pipes 10 and 10 respectively.

The storage units 4 and 4 are connected with one another in a regulatable manner by pipes 19, 21 and cut-off or regulating members 20, 22 interposed therein. As a result, hot water or steam with a pressure 79 can flow from the chamber 4 to the accumulator 4 of lower pressure 70 permitting a greater withdrawal of steam, particularly from the chamber 4, and producing a rapid exchange of heat between the chambers 4 and 4. This exchange of heat may be considerably'increased in certain cases by the arrangement of circulating pumps if desirable between the chambers a and i and in certain cases also between such chambers and the preheaters. Such pumps being provided in certain cases only are therefore not shown.

By arranging the accumulators for the hot water produced by the flue gas economizers as low pressure steam storage units, the provision of separate storage units in addition to hot water accumulators is rendered unnecessary, so that a considerable saving is effected. Moreover, the most Widely different irregularities in the whole installation, such as excess of production or short supply of feed water, excess of boiler steam, and, by too rapid supply of hot water from the storage unit, excess supply of high pressure steam, and finally excess supply of low pressure steamsand of hot water for cooking purposes and the like, are taken account of by r the accumulators serving as low pressure storage units.

I claim:

1. In a steam installation or system, in combination, an economizer system comprising two feed-water heaters adapted to be heated by Waste fuel heat and connected in series by a pipe line, means in said pipe line for operating said economizers at different pressures, means for feeding said economizers, a steam and hot water accumulator system comprising accumulators for use at different pressures corresponding to said pressures in said economizers, pipe connections for connecting said accumulators with their corresponding economizers, an independent water connection leading from the economizer of higher pressure and means therein to force feed water therethrough.

2. In a steam installation or system, in combination, an economizer system comprising two feed-Water heaters or economizers arranged in series and adapted to be heated by waste fuel heat, means for feeding said economizers, a pump connected with said economizers to operate the same at different pressures, means including pipe lines and a pump for leading the feed-water from said economizer system to a boiler, and a steam and hot Water accumulator system comprising accumulators for use at differentpressures corresponding to said pressures in said economizers, pipe connections between said economizers and accumulators, and means for controlling said connections, and suitable connections provided with controlling means between said accumulators of different pressures.

3. In a steam installation or system, in combination, an economizer system comprising two feed-water heaters or economizers arranged in series and adapted to be heated by waste fuel heat, means for feeding said economizers, a pump connected with said economizers to operate the same at different pressures, means including pipe lines and a pump for leading the feed-water from said econolnizer system to a boiler, and a steam and hot water accumulator system comprising accu' mulators for use at different pressures corresponding to said pressures in said econo mizers, pipe connections between said economizers and accumulators, and means for controlling said latter connections, and connections provided with controlling means between the steam spaces and also between the water spaces of said accumulators.

In testimony whereof I have signed my name to this specification.

FRANZ LosEL.

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