SU1580119A1 - Connection of circuit for obtaining heating and process steam from hot water - Google Patents

Abstract

The invention relates to a circuit connection for the production of heating and process steam from hot water and can be used in heating systems and also in chemical, food and other industrial fields, to produce steam from hot water. Essence: the connection additionally contains a compressor, and the steam generator is made in the form of several stages, included in the hot water pipeline, and a steam line, and in the latter, compressors are additionally included between the stages of the steam generator. The connection contains a cooler made in the form of at least one mixer included in the steam line between the compressor and one of the steps of the steam generator connected to the hot water pipeline. At least one stage of the steam generator is designed as an expander. Each stage is made in the form of parallel-connected in the steam line through the additionally installed collector of the expander and mixer. 3 hp ff, 1 ill.

Description

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The laziness of which is formed by an axial compressor and each turbine unit case (compressors 33, 38, 39) is preceded by a steam generator, for example, expanders 12, 9, 6. The circuit may contain mixer 16 and 19 installed between the compressors and the steam generators. 3 hp f-ly, 1 ill.

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The invention relates to a circuit connection for producing heating and process steam from hot water and can be used in heating systems, as well as in the chemical, food and other industries where steam is used in technological processes.

"It is known to produce heat in thermal and nuclear power plants, where heat is removed from steam condensation turbines in the form of steam with a temperature of 160-200 C. Such steam cannot be transported, but it can be used to heat up pressurized water, which can then be transported set at any distance. At the place of consumption, it can be used both for heating and for some technological processes,

In areas with steam heating, in which there is an available source of sufficient water, it is necessary to ensure the transformation of part of this water into heating or process steam.

Technological equipment circuits are known in which the transformation of hot water into a large amount of heating and process steam is carried out in the classical way at thermal power plants using power fuels. From hot water, saturated steam of low pressure and low temperature is obtained, which is heated to the parameters required in the steam network. The equipment by which steam is produced, even if it is steam generators, expanders, etc., usually consumes solid fuels. The disadvantage of using solid fuels is the further deterioration of the environment directly in the cities or their immediate surroundings and also more and more the lack of this type of fuel. In addition, the efficiency of this method of heating is low, if we consider the costs of transportation of coal, ash, losses

in chimneys, etc. (Natanov HZ. Preparation of geothermal waters for use. M .: stroiizdat, 1980, p. 23, Fig. 4).

These drawbacks are eliminated by connecting the circuit to convert hot water from a power plant or other source to heating or process steam.

The drawing shows the connection scheme of the proposed circuit.

The circuit connection for receiving heating and process steam contains hot water included in pipeline 1, divided into three pipelines 2-4, steam generator, connected by steam pipe through turbo compressor 39 to consumer through pipeline 45. The circuit further comprises compressors 33 and 38. Steam generator made in the form of several stages (e.g. expanders 6, 9, 12), included in the pipeline 2 hot water, and pipelines 7, 10 and 13 connected to it, and in the steam line, which includes steam lines 25,27,28,30 , 31.36 43. In the steam line between the steps of the steam generator, for example, expanders 6 and 9, the said compressors 33 and 38 are additionally included.

The proposed circuit may contain coolers 16 and 19, made in the form of a mixer and included in the steam line, respectively, through steam lines 25,26,43 between the compressor 38 and the expander 6 and through the steam lines 28930,36 between the compressor 33 and the expander 9. The cooler 16 is connected to the pipeline 3 hot water, and the cooler 19 is connected to the branch pipe from pipe 3 to pipe 18. In the proposed circuit, one stage of the steam generator can only be made in the form of an expander 12.

In addition, in the proposed connection of the circuit, each stage can be made in the form of parallel connected in the steam line

through steam lines 36.30 and 28 and the collector 29 of the expander 9 and the mixer 19, and also connected in parallel to the steam line via the steam lines 43,26,25 and the collector 26 of the extender 6 and the mixer 16. The expander 12 is connected to the pipeline 4 by means of the pipeline 13 The compressor 33 has its own electric motor 34, operating through the gearbox 35. The electric motor 40 is connected through the gearboxes 41 and 42 to the compressors 39 and 38. A manifold 32 is installed on the steam line 31 between the expander 12 and the compressor 33.

Mixers 16 and 19 are equipped with by-pass pipelines 2) and 22, respectively, each of which is provided with a regulatory body 23 and 24. Regulatory bodies 5,8, And, are installed on hot water pipelines 2,7,10,13,4,18,3 14,15,17,20 respectively.

The main part of hot water from

pipeline 1 passes through pipeline 2 and its continuation — pipelines 7 and 10 to all expanders 6, 9 and 12. Constant, but decreasing temperatures and pressures from one to another are maintained in each of them. In each expander, a portion of the incoming water is converted to saturated steam. The steam with the lowest pressure and temperature flows from the third expander 12 through the manifold 32 to the suction side into the low-pressure compressor 33. In the medium pressure compressor 38, steam is drawn from steam manifold 29, and in high pressure compressor 39 from the first steam manifold 26. Steam collectors 26 and 29, operating simultaneously as separators, receive further saturated steam from mixers 16 and 19. In The mixers 16 and 19 cool the superheated steam coming from the compressors 38 and 39 by injecting a small amount of hot water from the pipe 3 and the pipe 18 branching from it 18. As a result, the mass of the intake steam in the compressors 33,38,39 constant it grows, which makes it possible to use the energy of the transported water most efficiently. From the high-pressure compressor nozzle 39, steam is discharged from the injection pipe.

45 for heating and technological purposes. Hot water flows from the expander 12 via a connecting pipe 13 into the hot water pipeline 4 and from there it is directed to the heating water user. The consumer also leaves the branch pipe 21 and the second branch pipe 22 excess heat water from the mixers 16 and 19.

In the event that the steam circuit stops operating, the regulators 5, I7 and 20 will close the supply of hot water to the pipes 2 and 3.

The closing bodies 14, 23 and 24 will also be closed, and the closing body 15 will be opened. This means that all the water from pipeline 1 of the hot Veda flows through pipeline 4 to the consumer.

The advantage of connecting a circuit to convert hot water from power plants or another source into heating and process steam is that it uses the high efficiency of the turbo-compressor unit included in the circuit in combination with intercoolers in a wide range of compression and amount of steam supplied. With such a connection, it is possible to maintain substantial steam pipelines in urban areas when converting them to a water heating system.

Taking into account the pressure of the intake steam in the turbo-compressor unit in the range of 0.15-0.20 MPa and the large amount of heat transported, the low-pressure case, which is represented by compressor 33, can be an axial compressor, which provides high adiabatic compression efficiency at small machine sizes.

Claims (4)

Invention Formula 1, A loop connection for producing heating and process steam from hot water, containing a steam generator connected to the hot water pipeline, connected by a steam line through a turbo compressor to a steam consumer, in order to increase efficiency - It contains a compressor, and the steam generator is made in the form of several stages included in the hot water pipeline and a steam main, and in the latter, between the stages of the steam generator, the compressors are additionally included. 2. A circuit connection according to claim 1, characterized in that it comprises a cooler made in the form of at least one mixer included in the steam line between the compressor and one of steps of the steam generator, and connected to the hot water pipeline. 3. The connection of the circuit according to claim 1, characterized in that at least one stage of the steam generator is made in the form of an expander. 4. The connection of the circuit according to claim 1, characterized in that each step is made in the form of parallel-connected in the steam line through an additionally installed collector of the expander and mixer.