RU2261353C1 - Power plant with stirling engine and intermediate heat-transfer agent - Google Patents

Abstract

FIELD: hot gas positive-displacement engine plants.

SUBSTANCE: thermite fuel is ignited by means of the igniting device in the heat generator. The combustion heat of the fuel is transmitted through the heat pipe to the walls of the heater of the Stirling engine, which provides starting of the engine. When the Stirling engine is in operation, mechanical energy is converted into the electric power with the use of the electric generator. The refrigerator, through which coolant is supplied, is used for cooling the Stirling engine.

EFFECT: eased starting and control of the engine.

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Description

The invention relates to the field of power engineering and can be used as a power plant for special purposes, for example, for special fortifications, underwater equipment and mobile systems.

A device of the Stirling engine is known, consisting of a heater, a regenerator, a refrigerator and a piston group (Batyrev A.N., Koshevarov V.D., Leikin O.Yu. Ship nuclear power plants of foreign countries. - St. Petersburg: Shipbuilding, 1994, p. 205).

A known power plant with a Stirling engine and hydrogen-containing fuel, including a Stirling engine and a heat-using refrigeration machine (RF Patent No. 2169319, F 25 V 27/02, Bull. No. 17 dated 06/20/2001). However, this installation uses expensive hydrogen fuel and a combustion chamber with a catalyst.

Known energy-cooling system with a Stirling engine, using a magnesium oxidation reaction as a heat source (RF Patent No. 22214566, F 25 В 27/02, Bull. No. 29 from 10/20/2003). However, an oxidizing agent is required to start the magnesium oxidation reaction and heat evolution, and magnesium oxides are formed as a result of the reaction and must be removed.

Gas-free fuels and their characteristics are known (Genkin A.L., Lotonin O.K., Silyan A.M. Characteristics of gas-free fuels / In the scientific and technical collection "Alternative Energy". St. Petersburg: All-Russian Scientific Research Institute, 2000, pp. 16-20). It is noted that, mainly, metals are used as fuel, and the oxidizing agent can be both in the gaseous state and stored separately from the fuel, and in the solid state and stored in a mixed state with the fuel, forming termite compositions (termites).

Known autonomous power plant based on the Stirling engine with gas-free fuel (Khaliullin Yu.M., Temnov VN, Moshkov VN Ship anaerobic non-nuclear power plants using gas-free fuel. // Shipbuilding, 2000, No. 1, p. 36 -39). However, in this setup, the reaction chamber with gas-free fuel is flow-through, which requires introducing additional systems for storing and supplying a gaseous oxidizer, as well as systems for removing combustion products from the combustion chamber and storing them in additional containers.

A known power plant with a Stirling engine and an intermediate coolant, consisting of a Stirling engine, the heater of which is connected to a heat source using a heat pipe. (Levenberg V.D., Tkach M.R., Golstrom V.A. Heat storage. - Kiev: Technique, 1991, p. 38-41). However, the heat generator used in this installation based on the heat-accumulating substance requires long-term charging (heating) from an electric energy source.

The technical result that can be obtained by carrying out the invention is to increase the speed of the appetizer and the controllability of the engine.

To achieve this technical result, a power plant with a Stirling engine and an intermediate heat carrier, consisting of a Stirling engine, the heater of which is connected to a heat source using a heat pipe, is equipped with an electric generator on the same shaft as the Stirling engine, and the heat source is made in the form of a heat generator with gas-free fuel based on termites.

The introduction of a heat source in the structure of a power plant with a Stirling engine and an intermediate heat carrier, made in the form of a heat generator with gas-free fuel based on termites, and an electric generator on the same shaft as the Stirling engine, allows to obtain a new property, which consists in the possibility of increasing the speed of the Stirling engine to start working due to the burning of termites and the conversion of the heat of combustion of termites into electrical energy.

The drawing shows a power plant with a Stirling engine and an intermediate coolant.

The power plant incorporates a Stirling engine 1 with a heater 2 and a refrigerator 3, a heat source in the form of a heat generator 4 with thermite fuel and an electric generator 5. The heater 2 of the Stirling engine 1 is connected to the heat generator 4 by means of a heat pipe 6. Heat generator 4 consists of a termite charge (gasless fuel) 7 and an igniter 8.

A power plant with a Stirling engine and an intermediate heat carrier works as follows.

The operation of the power plant begins at the moment of supplying an energy pulse (from a separate source - not shown) to the igniter 8, which provides an increase in the temperature of the adjacent portion of the fuel charge 7 to the ignition temperature. The combustion of fuel occurs in a high-temperature combustion wave, the propagation of which takes place in the body of the charge from the installation site of the igniter device 8. The duration of the fuel combustion process is determined by the speed of propagation of the flame front, size, shape of the charge, as well as its other design features.

The heat released during the combustion of thermite fuel 7 leads to an increase in the temperature of the coolant of the heat pipe 6 and the beginning of its circulation. The heat from the coolant of the heat pipe 6 due to the heat conduction is transferred to the walls of the heater 2 of the Stirling engine 1, which leads to a gradual increase in the temperature of the heater 2 and, accordingly, the heating of the working fluid used in the Stirling engine 1. With increasing temperature of the working fluid in the engine head, a gradual increase in pressure in the working circuit and, in particular, in the working cylinder. This, in turn, causes the displacement of the working piston of the engine and, ultimately, its start.

During the operation of the Stirling engine 1, mechanical energy is converted into electrical energy by means of an electric generator 5. To cool the Stirling engine 1, a refrigerator 3 is used, through which a cooling medium is supplied.

Sources of information

1. Batyrev A.N., Koshevarov V.D., Leikin O.Yu. Ship nuclear power plants of foreign countries. - St. Petersburg: Shipbuilding, 1994, p.205.

2. RF patent №2169319, F 25 В 27/02, Bull. No. 17 dated 06/20/2001.

3. RF patent №2214566, F 25 В 27/02, Bull. No. 29 dated 10/20/2003.

4. Genkin A.L., Lotonin O.K., Siljan A.M. Characteristics of gasless fuels / In the scientific and technical collection "Alternative Energy". SPb .: VMII, 2000, p.16-20.

5. Khaliullin Yu.M., Temnev VN, Moshkov VN Shipboard anaerobic non-nuclear power plants using gas-free fuel. // Shipbuilding, 2000, No. 1, p. 36-39.

6. Levenberg V.D., Tkach M.R., Golstrom V.A. Heat storage. - Kiev: Technique, 1991, p. 38-41 - prototype.

Claims (1)

Power plant with a Stirling engine and an intermediate heat carrier, consisting of a Stirling engine, the heater of which is connected to a heat source using a heat pipe, characterized in that it is equipped with an electric generator on the same shaft as the Stirling engine, and the heat source is made in the form of a heat generator with gas-free fuel based on termites.