RU2350848C2 - Heat electric power supply system (versions) - Google Patents

Abstract

FIELD: power engineering.

SUBSTANCE: heat electric power supply system consists of heat energy use sub-system, straight and return main pipelines of heat network, circulation circuit of heat carrier of centralised heat supply at least with one heating unit of the building, and electric power supply sub-system. At that electric power supply sub-system consists of power plant; power lines; at least one liquid transformer consisting of at least one winding; tank with transformer liquid; circulation pump; and separating heat exchanger the secondary circuit whereof is equipped with circulation pump. When the above circulation pump is in operation, heat carrier of secondary circuit of separating heat exchanger is supplied to one heating unit of the building, which is connected to secondary circuit of separating heat exchanger. Version of heat electric power supply system is described as well.

EFFECT: improving efficiency, ecological properties and reliability of the system, fuel calorific capacity fully used by centralised heat supply source, and effectiveness of heat removal from transformers, reducing temperature loads on electrical part of the system during intense ambient temperature decrease, cost of operation and overall dimensions of electrical transformers.

3 cl, 3 dwg

Description

Technical field

The invention relates to a power system, in particular to a district heating and power supply of residential, public and industrial buildings and structures.

State of the art

Currently, various central heating and power supply systems are known.

An analog of this system can be considered:

heat and power supply system according to the patent of the Russian Federation No. 2174610, MKI F01K 17/02, op. 2001.10.10, including the direct and return main pipelines of the heating network, the circulation circuit of the heating medium of the district heating supply.

The disadvantages of the analogue are: insufficiently high reliability of the electrical part of the system, increased overall dimensions of electrical transformers, increased temperature loads on the electrical part of the system during periods of intensive lowering of the ambient temperature, insufficient environmental friendliness, insufficient efficiency of heat removal from transformers, insufficient use of the calorific value of the fuel, insufficient efficiency of the system increased cost of operating the system.

The closest analogue to the proposed system is integrated with the power supply system of the district heating system according to the patent of the Russian Federation No. 2168113, MKI F24D 3/12, op. 2001.05.27, including the direct and return main pipelines of the heating network, the circulation circuit of the heating medium of the district heating supply.

The disadvantages of the closest analogue are: insufficiently high reliability of the electrical part of the system, increased overall dimensions of electrical transformers, increased temperature loads on the electrical part of the system during periods of intense decrease in ambient temperature, insufficient environmental friendliness, insufficient efficiency of heat removal from transformers, insufficient use of the calorific value of fuel, insufficient Efficiency of the system, increased cost of operating the system.

The closest analogue to the proposed method can be considered "Method of operation of a thermal power plant" according to the patent of the Russian Federation No. 2174610, MKI F01K 17/02, op. 2001.10.10, including the generation of electric energy and its delivery to consumers of electric energy, heating of network water and the delivery of thermal energy to consumers through the main pipelines of the heating network.

The disadvantages of the closest analogue are: insufficiently high reliability of the electrical part of the system, increased temperature loads on the electrical part of the system during periods of intense decrease in ambient temperature, insufficient environmental friendliness, insufficient use of the calorific value of the fuel, insufficient efficiency of the system, increased cost of operating the system.

An analogue for the proposed transformer can be considered a liquid transformer with a cooler, the design of which is described in "Khudyakov ZI Device and repair of transformers. M: Higher school, 1971, 240 S." on pages 109-111, including windings, a tank with transformer fluid, a circulation pump and an air heat exchanger with fans.

The disadvantages of the analogue are: increased overall dimensions of the transformer, insufficient reliability of the transformer, insufficient efficiency of heat removal from the transformer.

The closest analogue for one of the options of the proposed transformer can be considered a liquid transformer with a water cooler ("the most powerful"), the design of which is described in "A. Voldek. Electric cars. L .: Energy, 1978, 832 pp. ”On page 259, including windings, a tank with transformer liquid, a circulation pump and a water heat exchanger.

The closest analogue for one of the options of the proposed transformer can be considered a liquid transformer with an air cooler with a nominal apparent power of 10 ÷ 60 MB · A, the design of which is described in “A. Voldek. Electric cars. L .: Energy, 1978, 832 S. "on page 259, including windings, a tank with transformer fluid, a fan and a pipe cooler.

The disadvantages of the closest analogues are: increased overall dimensions of the transformer, insufficient reliability of the transformer, insufficient efficiency of heat removal from the transformer, increased cost of operating the transformer.

Disclosure of inventions

In existing systems of heat and power supply during periods of intensive lowering of the ambient temperature, often consumers of thermal and electric energy, for example individuals, use electric energy receivers to heat the premises. This, in turn, increases the load on the electrical part of the heat and power supply system, in particular, transformers that convert high-voltage to low-voltage, operate in high thermal loads, which can lead to transformer failure. An example of the development of events under such a scenario can be an emergency blackout of electric energy in several areas of Moscow in May 2005 due to an accident at a transformer substation in Chagino.

The use of a “feedback system” will allow for the removal of thermal energy emitted by transformers into heated rooms, in which, under the above conditions, electrical energy consuming consumers are activated, it is faster to reach a comfortable temperature, disconnecting the electrical energy consuming receivers and reducing the load on the electrical part heat and power supply systems.

The objective of the invention is to improve the heat and power supply system.

Technical results of inventions:

1) increase the efficiency of the system;

2) increasing the environmental friendliness of the system;

3) improving the reliability of the system;

4) increasing the completeness of the use of the calorific value of fuel by a centralized heat supply source;

5) reduction of temperature loads on the electrical part of the system during periods of intensive lowering of the ambient temperature;

6) reducing the cost of operating the system;

7) reducing the overall dimensions of electrical transformers;

8) increase the efficiency of heat removal from transformers.

Technical results are achieved in that the heat and power supply system contains a heat supply subsystem with direct and return main pipelines of the heating network, a circulation circuit of a heat transfer medium of at least one heating device in the building, the power supply subsystem contains a power plant, power lines, at least one transformer liquid, including at least one pump and a separation heat exchanger, the secondary circuit of which is connected, at least at least one heating device of the building or at least one low-temperature heat consumption system of the building.

Technical results can also be achieved by the fact that the heating device of the building, connected to the secondary circuit of the separation heat exchanger of the transformer, is low-temperature.

Technical results are also achieved by the fact that the method of operation of the heat and power supply system consists in generating and delivering electric and heat energy to consumers, and the heat energy generated by transformers is taken to the rooms heated by the heat supply subsystem.

Technical results are achieved in that the liquid transformer contains at least one winding, a tank with transformer liquid, a circulation pump and a separation heat exchanger, the secondary circuit provided with a circulation pump, and the coolant of the secondary circuit of the separation heat exchanger is supplied during operation of the said circulation pump at least one heating device of the building or at least one low-temperature heating system of the building.

Technical results are achieved in that the liquid transformer contains at least one winding, a tank with transformer liquid and is connected to the air circuit supplying the transformer heated air to the building or room heated by the at least one heating device.

Technical results are achieved in that the transformer contains at least one winding and is connected to the air circuit supplying the transformer heated air to the building or room heated by at least one heating device.

Brief Description of the Drawings

Figure 1 presents a diagram of a heat and power supply system with a liquid transformer and a liquid transformer heat exchanger.

Figure 2 presents a diagram of a heat and power supply system with a liquid transformer and an air transformer heat exchanger.

Figure 3 presents a diagram of a heat and power supply system with a dry transformer and an air transformer heat exchanger.

The implementation of the invention

The heat and power supply system contains a subsystem of heat energy use, including direct 1 and return 2 main pipelines of the heating network, a circulation circuit of a heat transfer medium of at least one heating device 3 of building 4, the power supply subsystem contains a power station 5, power lines 6, at least , one transformer 7, for example liquid, including a circulation pump 8 and a separation heat exchanger 9, the secondary circuit 10 of which is connected at least , with one heating device 11 (3) of the building, or at least one low-temperature heating system of the building.

The heating device 3 of the building, connected to the secondary circuit of the separation heat exchanger of the transformer 7, can be made low-temperature.

The transformer 7, for example, liquid, contains at least one winding 12, a tank 13 with transformer liquid 14, a circulation pump 8 and a separation heat exchanger 9, while the secondary circuit 10 is equipped with a circulation pump 15, and the coolant of the secondary circuit 10 of the separation heat exchanger 9 at the operation of the said circulation pump 15 is supplied to at least one heating device 3 (11) of the building 4 or at least one low-temperature heating system of the building.

The liquid transformer 16 contains at least one winding 12, a tank 13 with transformer liquid 14 and is connected to the air circuit 17 for supplying the air heated by the transformer 16 to the building 4 or the room heated by at least one heating device 3.

The transformer 18 contains at least one winding 12 and is connected to the air circuit 17 for supplying the transformer heated air to the building 4 or room heated by the at least one heating device 3.

The heat supply subsystem may include central heat substations 19.

The heat and power supply system operates as follows. Electric and thermal energy is generated and delivered to consumers, respectively, by the heat supply and power supply subsystems, and allocated by transformers 7 (16, 18) to the rooms 4 heated by the heat supply subsystem.

The manufacture of elements of a heat and power supply system can be carried out from known components and materials and by known methods.

The connection of the elements of heat and power can be carried out by known methods.

Thus, the heat and power supply system allows to achieve the above technical results.

Claims (3)

1. A heat and power supply system comprising a heat energy use subsystem, direct and return main pipelines of a heat network, a circulation circuit of a heat transfer medium of at least one heating device of a building, and a power supply subsystem, characterized in that the power supply subsystem comprises a power station, power lines at least one liquid transformer, containing at least one winding, a tank with transformer liquid, circulating The pump and the separating heat exchanger, the secondary circuit of which is provided with a circulation pump and coolant heat exchanger of the secondary circuit at the separating operation of said circulating pump is supplied to at least one heating unit of the building connected to the secondary circuit of the separating heat exchanger. 2. The system according to claim 1, characterized in that the building heating device connected to the secondary circuit of the transformer isolation heat exchanger is low temperature. 3. A heat and power supply system, comprising a subsystem for using heat energy, direct and return main pipelines of a heat network, a circulation circuit of a heat transfer medium of at least one heating device of a building, and a power supply subsystem, characterized in that the power supply subsystem comprises a power station, power lines at least one liquid transformer, containing at least one winding and a tank with transformer liquid, and connected to air circuit supplying heated air to the building or room heated by at least one heating device.

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