RU2618689C1 - Way of the air gap magnetic flux drag reduction among linear electric power generator anchors of the free-piston energy module with the external combustion shaft - Google Patents

Abstract

FIELD: electricity.

SUBSTANCE: anchors of the linear electric power generator are made with the capability of the reciprocal motion in such a way that two and more ledges of one anchor enter-exit the reciprocal grooves of the another anchor of the linear electric power generator. The drag reduction of the magnetic flux of the air gap among linear electric power generator anchors of the free-piston energy module with the external combustion shaft is achieved by means of the gap extension between anchors.

EFFECT: drag reduction of the magnetic flux of the air gap among linear electric power generator anchors of the free-piston energy module with the external combustion shaft and the power-weight ratio of the linear electric power generator.

2 dwg

Description

FIELD OF TECHNOLOGY

The invention relates to the field of power engineering.

BACKGROUND

The closest analogue of the claimed invention is RF patent 2422655 "Two-cylinder free-piston power unit with a common external combustion chamber and a linear electric generator with opposed movement of the anchors."

The combustion products from the combustion chamber 1 (Fig. 1) through the pipe 2 through the gas distribution valve 3 enter the right (in the figure) piston cavity 4 of the left expansion machine 5, and through the pipe 6 and through the gas distribution valve 7 to the left cavity of the piston 8 of the right expansion machine 9. Under the influence of expanding combustion products, the pistons 4 and 8 and the anchors of the linear electric generator 10 and 11 connected to them begin to move in the opposite direction. The anchors 10 and 11 can be permanent magnets or electromagnets magnetized by a magnetizing coil 12 when a magnetizing current flows through its turns. In both cases, the magnetic flux closes along the contour: anchor 11, stator magnet 13, anchor 10. With the opposite movement of the anchors 10 and 11 (in this case, the divergence movement), the magnetic lines of their magnetic fields intersect, as a result of which in the stator magnet 13 and the anchors 10 and 11, the magnetic flux changes and, as a result, an electric pulse is generated in the stator coil 14. When the pistons and anchors reach the points of extreme divergence, the control system (not shown) puts the valves 3, 7, 15, 16 in opposite positions. Now, the products of combustion from the combustion chamber 1 through the pipeline 2 and through the gas distribution valve 15 enter the left cavity of the piston 17, and through the pipe 6 and through the gas distribution valve 16 into the right cavity of the piston 18. The pistons and the armature of the generator connected to them begin to converge. An opposite sign pulse is generated in the stator coil 14. The exhaust gases at the divergence of the pistons 17, 18 are discharged into the atmosphere through the gas distribution valves 15 and 16, and when converging through the gas distribution valves 3 and 7. At the same time during the working cycles of the expansion machines 5, 9 through the check valves 19, 20, 21, 22 from the corresponding cavities the pistons of the expansion machines 5, 9 through the pipelines 23, 24 to ensure the fuel combustion process, air is supplied to the combustion chamber 1, and air is drawn in from the atmosphere through the check valves 25, 26, 27, 28.

OBJECT OF THE INVENTION

The specific power of an electric machine depends on various factors, including the magnetic flux resistance of the gap between the anchors of the electric machine. In turn, the larger the gap between the anchors, the larger the area of the anchors that are pierced by magnetic flux, the greater this resistance. The purpose of the invention is to provide a decrease in the magnetic flux resistance of the gap between the anchors of a linear electric generator of a free-piston power module with an external combustion chamber.

SUMMARY OF THE INVENTION

The decrease in the magnetic flux resistance of the gap between the anchors of the linear generator of the free-piston power module with an external combustion chamber is achieved by increasing the area of the gap between the anchors of the linear generator. Figure 2 shows a fragment of figure 1. In the upper part of the fragment shows the position of the anchors 10, 11 at the position of the extreme point of convergence, and in the lower part - at the position of the extreme point of convergence. In the upper part of the fragment, it can be seen that the anchors 10, 11 of the linear electric generator are made with the possibility of reciprocating motion. Anchor 10 has a protrusion in the form of a glass with a central protrusion-rod, the geometric axis of which coincides with that of the protrusion-glass. Anchor 11 has a protrusion in the form of a glass. The protrusions of the armature 11 enter-exit in the response grooves of the armature 10, which is achieved by increasing the area of the gap between the anchors. The number of protrusions, grooves, their shape are selected from specific considerations. The result is a decrease in the magnetic flux resistance of the air gap between the anchors by increasing the area of the gap between them.

SUMMARY OF THE INVENTION

A method of reducing the magnetic flux resistance of the air gap between the anchors of a linear electric generator of a free-piston energy module with an external combustion chamber, comprising the anchors of a linear electric generator of a free-piston energy module with an external combustion chamber, characterized in that the anchors of a linear electric generator of a free-piston energy module with an external combustion chamber way that two or more protrusions of one armature of a linear generator of a free-piston power module with an external combustion chamber enter-exit into the response slots of another armature of a linear electric generator of a free-piston power module with an external combustion chamber, thereby achieving an increase in the gap between the armature of a linear electric generator of a free-piston power module with an external combustion chamber, thereby reducing the resistance of the magnetic flux of the air gap between the armature of a linear electric generator of a free-piston power module with an external combustion chamber by increasing the area of the gap between the anchors.

TECHNICAL APPLICABILITY OF THE INVENTION

The requirements for materials and technologies of the claimed invention do not go beyond the scope of modern capabilities.

GRAPHIC MATERIAL

Figure 1. Schematic diagram of a two-cylinder single-stroke free-piston power module with a common external combustion chamber and a linear electric generator with opposed movement of the anchors:

1 - a combustion chamber, 2, 6, 23, 24 - a pipeline, 3, 7, 15, 16 - a gas distribution valve, 4, 8, 17, 18 - a piston of an expansion machine, 5, 9 - an expansion machine, 10, 11 - an anchor 12 - magnetization coil, 13 - stator magnet, 14 - stator coil, 19, 20, 21, 22, 25, 26, 27, 28 - non-return valve.

Figure 2. Schematic diagram of a fragment of a two-cylinder single-stroke free-piston power module with a common external combustion chamber and a linear electric generator with opposed movement of the anchors.

10, 11 - anchor.

Claims (1)

A method of reducing the magnetic flux resistance of the air gap between the anchors of a linear electric generator of a free-piston energy module with an external combustion chamber, comprising the anchors of a linear electric generator of a free-piston energy module with an external combustion chamber, characterized in that the anchors of a linear electric generator of a free-piston energy module with an external combustion chamber way that two or more protrusions of one armature of a linear generator of a free-piston power module with an external combustion chamber enter-exit into the response slots of another armature of a linear electric generator of a free-piston power module with an external combustion chamber, thereby achieving an increase in the gap between the armature of a linear electric generator of a free-piston power module with an external combustion chamber, resulting in a decrease in the magnetic flux resistance of the air gap between the anchors of a linear electric generator of a free-piston power module with an external combustion chamber by increasing the area of the gap between the anchors.

Images