Engine with external heat supply

 

(57) Abstract:

The invention relates to mechanical engineering, in particular to the field of thermal machines externally heated working on thermodynamic Stirling cycle, i.e. in the ideal case, the cycle isotherm - isochore - isotherm - isochore. The task of the invention is to produce a standalone fuel-free power plant, is not inferior to internal combustion engines, improve thermal performance by providing full insulation chamber filled with liquid hydrogen, by eliminating a single shaft passing from insulated in metallizovannoe the camera. This is achieved by the presence of two synchronously rotating electrical generator made according to the technology of superconductivity, located in the insulated chamber filled with liquid hydrogen, and the rotating shaft of the mechanism of the tilting washer and giving electricity to the consumer; an electric motor located in the upper metallizovannoj the camera and the rotating shaft of the second swinging mechanism washers. The timing of the rotation shaft and the swinging motion of the washers is achieved due to the presence of discrete sensors angular position BP is nisms swinging washers and matching amplifier, controlled by a signal from the ECM to correct angular misalignment of the rotating shaft. 3 Il.

The invention relates to mechanical engineering, in particular to the field of thermal machines externally heated working on thermodynamic Stirling cycle, i.e. in the ideal case: isotherm - isochore - isotherm - isochore.

Known engine with external heat supply according to the patent of Russian Federation N 2157459 from 11.03.1999,, CL F 02 G 1/043, F 03 G 7/06, comprising a housing connected to form a sealing system with three cameras A, B and C, two of which A and B are insulated, inside of which is a mechanism consisting of two cylinder blocks, separated by insulating the wall with the formation of the chambers a and C, each of which is equal to the number of cylinders parallel to the axis of symmetry of the mechanism and evenly spaced around the circumference with a Central symmetry relative to the axis of the shaft, one of the units - the unit of compression is at the bottom insulated chamber A is filled with liquid hydrogen, and a second expansion unit, located at the top metallizovannoj chamber C is filled with gaseous hydrogen at ambient temperature and the regenerator and refrigerator. is the teachings of the energy due to the fact, there is no full insulation chambers A and B.

The objective of the invention is the expansion of technological capabilities by increasing the efficiency of energy production by providing full insulation chambers A and B by eliminating a single shaft passing from chamber A into chamber C.

This is achieved by the fact that in the engine with external heat supply, comprising a housing connected to form a sealing system with three cameras A, B and C, two of which A and B are insulated, inside of which is a mechanism consisting of two cylinder blocks, separated by insulating the wall with the formation of the chambers A and C, each of which is equal to the number of cylinders parallel to the axis of symmetry of the mechanism and evenly spaced around the circumference with a Central symmetry axis of the shaft, wherein one of the blocks - block compression is at the bottom insulated chamber A, filled with liquid hydrogen, and a second expansion unit, located at the top metallizovannoj chamber C is filled with gaseous hydrogen at ambient temperature and the regenerator, refrigerator and a block in the form of two synchronously rotating electric machines: generator is jdkim hydrogen, and rotatable shaft mechanism swinging washer bottom of the camera and giving electricity to the consumer: an electric motor located in the upper metallizovannoj the camera and the rotating shaft of the second swinging mechanism washers, and the timing of the rotation shaft and the swinging motion of the washers is achieved due to the presence of discrete sensors of the angular position of the rotating shaft; a control computer, which in real time is calculated angular misalignment of the shafts mechanisms swinging washers and matching amplifier, controlled by a signal from the ECM to correct angular misalignment of the shafts and provide simultaneous swinging movement of the washers.

In Fig. 1 shows a General view of the engine with external heat supply, and Fig. 2 - device position sensors shafts; Fig. 3 is a structural block diagram of the synchronization control shafts.

Engine with external heat supply consists of three chambers A, B and C, interconnected and generally forming a sealed system. Vessels A and B are insulated. It is shown in Fig. 1 insulating walls 20 and 22 can loosely be interpreted as evacuated (Dewar vessel) or active force of thermostat. Cameras is the ameres filled with hydrogen in various phase States. Camera B is additionally filled with metal hydride powder.

The camera C is above the camera A. the Camera A constantly filled with liquid hydrogen, the camera is initially filled with liquid hydrogen, then in the process of installing it passes in gaseous form, the line of section 32 shown in Fig. 1. Two swinging mechanism washer engine with external heat supply are placed in the chambers A and C. Mechanisms in cells A and C are formed by the cylinder blocks extending 2 and compression. The cylinders are parallel to the axis of rotation evenly spaced around the circumference and their number is greater than 4, preferably seven or nine in each block. Pairs of cylinders, in blocks 2 and 5 are aligned. Each cylinder holds the piston 3. The piston 3 through the connecting rods 4 with spherical joints connected with a swinging washers 7 - for cylinder extension and 8 - block compression. The geometry of mechanisms is such that the cylindrical surface of the connecting rods are constantly its straightforward form on the inner conical surfaces of the pistons 3, what keeps swinging washer 7 and 8 from turning. Each pair of aligned cylinder blocks 2 and 5 are connected by a short pipe with built-in regenerators 9 (porous e is placed at an oblique bowl 19 of the shaft 1, and swinging washer 8 through the angular contact ball bearing 11 in an oblique bowl 23 of the shaft 49. The rotation angles of the planes of the cups 19 and 23 are made with respect to the axes lying in planes perpendicular to the axes of the shafts 1 and 49; the Cup 19 with respect to an axis perpendicular to the plane of drawing of Fig. 1, the Cup 23 about an axis located in the plane of the drawing of Fig. 1.

Thus, for coaxially of the cylinder, when the piston 3 of the expansion unit 2 is located in dead end positions of the block compression pistons 5 3 are in high positions, that is, movement of the piston in coaxial cylinders shifted by 90 degrees. Mechanisms swinging washers made in accordance with certain ratios, which provides a steady airflow testing of rods to cones of the pistons.

Below slash Cup 19 on the shaft 1 posted by the rotor of the electric motor 34, is placed inside the stator 35, to power the electric motor to the stator 35 is suitable electric line 3. The shaft 1 is supported by bearings 12 and 14. In addition, the shaft 1 is a gear drive 37, and electroprecipitation (electromagnetic, or optoelectronic, or Hall sensor) 38 is installed on the inner surface of the block 2. 37 and 38 together form a position sensor shaft 1, from electraprobe is regenerator, the stator 1 which is placed inside the block 5. The generator made according to the technology of superconductivity. The bias is provided by an electric line 1, and the removal of the electricity - electric line 18. The shaft 49 is supported by bearings 33 and 13. On the shaft 49 between the bearing 33 and the rotor 15 has a gear drive 40, and on the inner surface of the block 5 - electroprecipitation 41, similar to 3 and 38, from electropneumatically 41 departs electrical line 42. Electric lines 1, 18, 3, 39, and 42 do not violate the integrity of the cameras A, B and C.

Camera A and B are connected by channels 24. Blocks 25, 26, 27 indicated cryogenic battery installation, 28 - electrical power line, 34 - entrance of liquid hydrogen refueling, 29 - regulating valve 30 to the connecting pipe, 31 - exhaust valve. The surface of the separation of liquid and gaseous shown position 32.

The device position sensors shafts 1 and 49 shown in Fig. 2. The disks 37 and 40 have teeth, evenly spaced around the circumference. The teeth pass by electropneumatically 38 and 41 mentioned above.

Structural block diagram of the synchronization control shafts 1 and 49 shown in Fig. 3. Electropneumatically 38 and 41 are connected to the input interface is conducted on the stator 35 of the electric motor. There from the stator 16 of the generator on line 44 receiving power.

Engine with external heat supply is as follows.

The entire volume of the chambers A, B and C filled with hydrogen in various phase States under pressure of about 20 MPa (see, Walker "Stirling Engines", M.: engineering. 1985, S. 57-60). The cylinder block 5 is in the environment of liquid hydrogen. The working fluid inside the cylinder, which is also hydrogen in the gaseous state. The phase shift between the motion of the connecting rod-piston group in coaxial cylinders is 90 degrees. due to the tilt of the tilting washers 7 and 8 by means of rotation of the washers relative to mutually perpendicular axes in planes perpendicular to the shaft axis that approximately provides an implementation of a thermodynamic cycle Stirling.

When the synchronous movement of the shafts 1 and 49 of the piston 3 and the rod 4 come in a reciprocating motion, creating a spherical movement without rotation on the washers 7 and 8 and the rotary shaft 1 and 49. Force and moments are transmitted to the slanting of the bowl 19 and 23. At uniform rotation of the shafts 1 and 49, the movement of the pistons 3 is purely harmonic. Each mechanism in the cells A and C has one degree of freedom due to the constant account the turnover shaft severalt turnover relative to the cone of the piston 3. The tolerances on the value of angle A in the manufacture of choosing positive in order to avoid jamming of the mechanism. The shaft 19 rotates the rotor 15 of the generator, which produces electricity produced by the stator winding 16. Rotation of the shafts 49 and 1 is synchronous, that is necessary to ensure the health of the engine with external heat supply. Synchronization of the rotation of the electric generator and the electric motor is achieved as follows. The sensors of revolutions of the generator and motor are formed respectively disks 40 and 37 and electropneumatically 41, 38 (Fig. 2). The teeth of the disks 40, 37, passing by electropneumatically 38, 41, generates electrical impulses in line 39, 42, which are the coordinate position of the rotating mechanisms. Shortened teeth 43 on the disks you specify a start point. The pulses are received through the interface counters programmatically organized inside the control computer 45, and calculates in real time the difference between the digital signals of the coordinates of the angular position is determined by the angular misalignment of the shafts 1 and 49, receive a signal from gate 4 on the acceleration or deceleration of the motor.

Some of the electricity generated by Elektrogeneriruyushchaya shafts 1 and 49, received from the control computer through the processing of pulses issued by electropneumatically 41 and 38, is fed to the matching amplifier 47 and controls the power of the electric current given by the line 48, the stator 35 of the motor to reduce to zero the angular misalignment of the shafts 1 and 49 during rotation. Most of the electricity is removed from the stator 16 of the generator and given to the consumer, and the bias winding is supplied electricity through the line 17. thermodynamic efficiency of the engine with external heat supply is very high and amounts to approximately 93-95%. Most of the heat environment of the camera C is translated into mechanical work and then into electricity. However, some of the heat (5-7%) comes from camera C camera A and B, which leads to the transfer of hydrogen from liquid to gaseous. Part of the heat is absorbed due to this phase transition, in part due to the heat capacity of the gas. In the chamber B is formed of the gas cushion. Through the valve 29 and conduit 30 cameras B and C are connected when the pressure in chambers B, A. the Increase in the gas temperature in the chamber to a predetermined value leads to desorption placed into the chamber B of the hydride that absorbs coming from cameretta cryogenic battery installation (units 25, 26, 27), cells A and B zoologists and gosupravlenie through the line 34 with liquid hydrogen.

Outwardly thermal power plant will be perceived as electric battery is extremely high capacity. It provides for use in mobile vehicles (primarily cars) full environmental cleanliness.

The application has been prepared with the financial support of the Russian Foundation for basic research (Project N 96-02-18481-a).

Engine with external heat supply containing a regenerator, a refrigerator and a housing connected to form a sealing system with three cameras a, b and C, two of which a and b insulated, inside of which is a mechanism consisting of two cylinder blocks, separated by insulating the wall with the formation of cells in each block is equal to the number of cylinders parallel to the axis of symmetry of the mechanism and evenly spaced around the circumference with a Central symmetry axis of the shaft, wherein one of the blocks - block compression is at the bottom insulated chamber And filled with liquid hydrogen, and the second expansion unit is located in the upper metallizovannoj camera With filled gamer a and b due to the exclusion of a single shaft, passing from the camera And to the camera, which is achieved by the presence of two synchronously rotating electrical: generator, made by technology of superconductivity, located in the insulated chamber filled with liquid hydrogen, and the rotating shaft of the mechanism of the tilting washer bottom of the camera and giving electricity to the consumer; an electric motor located in the upper metallizovannoj the camera and the rotating shaft of the second swinging mechanism washers, and the timing of the rotation shaft and the swinging motion of the washers is achieved due to the presence of discrete sensors angular motion of a rotating shaft, a control computer, which in real time is calculated angular misalignment of the shafts mechanisms swinging washers and matching amplifier, controlled by a signal from the ECM to correct angular misalignment of the shafts and provide simultaneous swinging movement of the washers.

 

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FIELD: heat power engineering.

SUBSTANCE: invention can be used as power plant for special application, for instance, for special fortifications, submerged objects and mobile complexes. Heat accumulator is charged by energy supplied from heat source through closed gas circuit. Circulation of gas heat carrier, for instance, helium, in closed circuit is provided by compressor. Heat from heat accumulating substance is conveyed through walls of accumulator to walls of heater of Stirling engine, leading to gradual temperature rise and pressure rise in working circuit of engine and starting of engine. With engine operating, mechanical energy is converted into electric energy by electric generator. Cooler is used for cooling Stirling engine by cooling medium circulating through cooler.

EFFECT: improved reliability of power plant with Stirling engine, reduced cost of plant.

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