RU2548528C1 - Method to optimise combustion product expansion process in pistons of free piston power unit with opposite piston movement connected to pistons of gas compressor with help of gas distribution valves - Google Patents

Abstract

FIELD: machine building.

SUBSTANCE: optimisation method involves an external combustion chamber, inlet valves for combustion product supply, pistons of a compressor drive, compressor pistons and control system; according to the invention, the combustion products from the external combustion chamber are supplied to the cavities of compressor drives' pistons via inlet valves for combustion product supply, thus the pistons of the compressor drives and compressor pistons start to move, the control system holds the gas distribution valves open after the combustion products start to come from the external combustion chamber to the pistons' cavities, the combustion products move the pistons, after certain delay time expires, the control system closes the gas distribution valves and after the pistons reach extreme points the control system switches the inlet and outlet valves into opposite positions, the gas compressed in the compressor cavity by the piston is supplied to a radiator via the outlet valve, there it is cooled and sent to a receiver and then to a customer.

EFFECT: invention allows for optimal degree of combustion products expansion.

1 dwg

Description

FIELD OF TECHNOLOGY

The invention relates to the field of power engineering.

BACKGROUND

The closest prototype of the claimed invention is “A method for optimizing the process of expanding the products of combustion of a free-piston gas generator with an external combustion chamber”, patent 2431752.

Abstract to patent 2431752: The invention relates to the field of power engineering. A method for optimizing the expansion process of the combustion products of a free-piston gas generator with an external combustion chamber, including an external combustion chamber, cylinders, pistons, intake valves and a control system, consists in that the control system closes the intake valve of the gas generator, which ensures the combustion products enter the combustion chamber into the cylinder of the free piston gas generator until the pistons arrive at the extreme point of movement, and thereby stops the supply of combustion products from the external combustion chamber to the cylinder PDR of the free-piston gas generator until its pistons arrive at the extreme point of movement. The invention provides an increase in the specific power of the free-piston gas generator and efficiency.

OBJECT OF THE INVENTION

The purpose of the invention is to optimize the expansion of the combustion products by gas distribution valves in the free piston cylinders with the opposite movement of the pistons of the energy module connected to the pistons of the gas compression compressor.

SUMMARY OF THE INVENTION

A method for optimizing gas distribution valves for the expansion of combustion products in free piston cylinders with the opposite movement of the pistons of an energy module connected to the pistons of a gas compression compressor is illustrated by the example of its action.

The compressor control system delivers fuel to the external combustion chamber 1 (drawing, control system not shown) by the nozzle 2 and ignites the spark plug 3. The combustion products from the combustion chamber 1 through pipeline 4 through the inlet valve 5 enter the right (according to the drawing) piston cavity 6 and through the inlet valve 7 into the left cavity of the piston 8, and under the action of incoming combustion products, the pistons begin to diverge. Since the area of the right surface of the piston 6 is greater than the area of its left surface by the difference in the cross-sectional area of the rods 9 and 10, the pressure of the air compressed in the left cavity of the piston 6 will be greater than the pressure of the combustion products in its right cavity. Therefore, air from the left cavity of the piston 6 through the non-return valve 11 through a pipe 12 is supplied to the external combustion chamber 1. The next dose of fuel is injected there by the nozzle 2. At the same time, air is drawn into the right cavity of the piston 14 from the atmosphere through a non-return valve 13, and air (hereinafter exhausted combustion products) is released into the atmosphere from its left cavity through an exhaust valve 15. Similarly, for the same reasons, when the piston 8 moves, the air compressed in its right-hand cavity through the check valve 16 is piped 12 to the external combustion chamber 1. Through the check valve 17, air is sucked into the left-hand cavity of the piston 18 from the atmosphere, and from the right-hand cavity through the exhaust valve 19 air (hereinafter exhaust combustion products) are released into the atmosphere. When the pistons reach the extreme divergence points, the control system translates the intake valves 5, 7, 20 21 and exhaust valves 15, 19, 22, 23 into opposite positions. Now, the combustion products from the external combustion chamber 1 through the pipe 4 through the inlet valve 20 enter the left end cavity of the piston 14 and through the inlet valve 21 into the right end cavity of the piston 18, and the pistons begin to converge. Through the check valves 24 and 25, the air compressed in the right-hand cavity of the piston 14 and in the left-hand cavity of the piston 18 passes through a pipe 12 to the external combustion chamber 1. The next dose of fuel is injected there by the nozzle 2. Through the check valves 26 and 27, air is drawn in from the atmosphere into the left piston cavity 6 and the right piston cavity 8. From the right piston cavity 6 through the exhaust valve 22 and from the left piston cavity 8 through the exhaust valve 23, air (hereinafter exhausted combustion products) is discharged into the atmosphere. At the same time, when the pistons 6, 7, 14, 18 diverge in the cavities of the pistons 28, 34 connected to them, various gases are compressed - the main function of the compressor. Compressed gas in the left cavity of the piston 28 through the exhaust valve 29 through a pipe 30 enters the radiator 31, where it is cooled, and then from there to the receiver 32, and through the check valve 33 the gas from the source of compressible gas is sucked into its right cavity. Accordingly, the gas compressed in the right cavity of the piston 34 through the exhaust valve 35 also passes through the pipe 30 to the radiator 31, where it is cooled, and then from there to the receiver 32, and through the check valve 36, the gas from the source of the compressed gas is sucked into its left cavity. When the pistons reach the extreme points of divergence, the control system transfers the exhaust valves 29, 35, 37, 38 to opposite positions. Now, the gas compressed in the right cavity of the piston 28 through the exhaust valve 37 through a pipe 30 enters the radiator 31, where it is cooled, and then from there to the receiver 32, and through the check valve 39, the gas from the source of compressible gas is sucked into its left cavity. The gas compressed in the left cavity of the piston 34 through the exhaust valve 38 also passes through the pipe 30 to the radiator 31, where it is cooled, and then from there to the receiver 32, and through the check valve 40, the gas from the source of compressible gas is sucked into its right cavity. Thus compressed in the compressor gas from the receiver 32 through the pipe 41 is supplied to the consumer.

A method for optimizing the expansion of combustion products by gas distribution valves in free-piston cylinders with the opposite movement of the pistons of the energy module connected to the pistons of the gas compression compressor is as follows. The control system, based on the physicochemical characteristics of the fuel, the specified load on the compressor and the specified degree of expansion of the combustion products, determines the timing of the closing of the intake valves 5, 7, and closes them at a certain point in the control system.

In this way, an optimum maximum is achieved at a given compressor load and with the fuel used in this case, the degree of expansion of the combustion products.

SUMMARY OF THE INVENTION

A method for optimizing gas distribution valves for the expansion of combustion products in free piston cylinders with opposed pistons of an energy module connected to pistons of a gas compression compressor including an external combustion chamber, intake valves for supplying combustion products, compressor drive pistons, compressor pistons and a control system, characterized in that the products combustion from the external combustion chamber through the intake valves of the supply of combustion products enter the cavity of the pistons of the compressor drives, in As a result, the compressor drive pistons and compressor pistons move, at the same time, the control system monitors the current position of the compressor drive pistons and compressor pistons, and in accordance with the set degree of expansion of the combustion products, the control system determines the timing of the closing of the intake valves of the supply of combustion products, and at a certain system control moment closes the intake valves of the supply of products of combustion.

TECHNICAL APPLICABILITY OF THE INVENTION

The costs of R&D and production of the claimed invention cannot differ significantly from those in the design and development of classical compressors.

GRAPHIC MATERIAL

The drawing shows a schematic diagram of a free-piston with the opposite movement of the pistons of the energy module connected to the pistons of a gas compression compressor.

1 - external combustion chamber; 2 - nozzle; 3 - spark plug; 4, 12, 30, 41 - pipelines; 5, 7, 20, 21 - inlet valves; 6, 8, 14, 18, 28, 34 - pistons; 9, 10 - stocks; 11, 13, 16, 17, 24, 25, 26, 27, 33, 36, 39, 40 - non-return valves; 15, 19, 22, 23, 29, 35, 37, 38 - exhaust valves; 31 - a radiator; 32 - receiver.

Claims (1)

A method for optimizing gas distribution valves for the expansion of combustion products in free piston cylinders with opposed pistons of an energy module connected to pistons of a gas compression compressor including an external combustion chamber, intake valves for supplying combustion products, compressor drive pistons, compressor pistons and a control system, characterized in that the products combustion from the external combustion chamber through the intake valves of the supply of combustion products enter the cavity of the pistons of the compressor drives, in As a result, the pistons of the compressor drives and the pistons of the compressor move, the control system keeps the gas distribution valves in the open position after the start of the intake of combustion products from the external combustion chamber into the piston cavity, while the combustion products drive the pistons, after the holding time the control system closes the gas distribution valves and when the pistons reach the extreme points of divergence or convergence, the control system puts the intake and exhaust valves in opposition olozhnye position, wherein the compressible piston gas compressor of the cavity through the outlet valve flows into the radiator where it is cooled and then supplied to the receiver and consumer.