A dual-shaft compression ignition free piston generator set

Abstract

The present invention discloses a dual-shaft compression ignition free piston generator set, including a power system, a transmission mechanism and two exhaust valve systems, wherein the power system includes two rotary pendulum motors arranged front and back, a cylinder fixing connector is provided in the middle of the two rotary pendulum motors, and the cylinder fixing connector is connected to the outer shell of the rotary pendulum motor; the transmission mechanism is arranged inside the cylinder fixing connector, the output end of the transmission mechanism is connected to the motor rotor of the rotary pendulum motor, and the input end of the transmission mechanism is respectively connected to the output ends of the two exhaust valve systems; the exhaust valve system includes a cylinder connection seat, a top row cylinder sleeve and a cylinder head. The beneficial effects of the present invention are: the present invention couples the free piston internal combustion engine and the generator into one, and the entire power generation group is highly efficient, energy-saving and cleanly discharged.

Description

Technical Field

[0001] The invention belongs to the technical field of generators, and in particular relates to a dual-shaft compression-ignition free-piston generator set. Background Art

[0002] At present, there are three ways to innovate the automotive power system: pure fuel power system, pure electric power system and oil-electric hybrid power system. However, in the pure fuel power system, the original defect of conversion power loss caused by the conversion of thermal energy into mechanical energy is difficult to overcome; the pure electric power system relies on the revolutionary breakthrough of battery technology and has many limitations. Therefore, based on the maturity of technology, the effectiveness of energy conservation and emission reduction, comprehensive manufacturing, and use cost considerations, the automotive market currently widely uses oil-electric hybrid power systems. Most manufacturers use system integration as a means to achieve energy conservation and emission reduction through various combinations. However, there are still problems such as high energy consumption, complex structure, and high cost. Summary of the invention

[0003] The purpose of the present invention is to provide a dual-shaft compression ignition free piston generator set with high efficiency, energy saving and clean emission in view of the deficiencies in the prior art.

[0004] The technical solution adopted by the present invention is: a dual-shaft compression ignition free piston generator set, including a power system, a transmission mechanism and two exhaust valve systems, the power system includes two rotary pendulum motors arranged front and back, a cylinder fixing connection piece is provided in the middle of the two rotary pendulum motors, the cylinder fixing connection piece is connected to the outer shell of the rotary pendulum motor, and the motor stator of the rotary pendulum motor surrounds the outer ring of the motor rotor; the transmission mechanism is arranged inside the cylinder fixing connection piece, the output end of the transmission mechanism is connected to the motor rotor of the rotary pendulum motor, and the input end of the transmission mechanism is respectively connected to the output ends of the two exhaust valve systems; the exhaust valve system includes A cylinder body connecting seat, a top row cylinder sleeve and a cylinder head, wherein one end of the cylinder body connecting seat is closed and the other end is connected to the cylinder head; the top row cylinder sleeve is coaxially nested in the cylinder body connecting seat; the input end of the transmission mechanism passes through the closed end of the cylinder body connecting seat, extends into the interior of the top row cylinder sleeve, and is connected to a piston head slidably installed in the top row cylinder sleeve; the piston head can slide along the inner wall of the top row cylinder sleeve to separate the top row cylinder sleeve into two cavities, of which the inner cavity is close to the closed end, and the outer cavity is close to the cylinder head end; the inner cavity and the outer cavity are respectively provided with an exhaust valve and an exhaust valve plug matching the exhaust valve; the inner cavity is also provided with an intake valve and an intake valve plug corresponding to the intake valve.

[0005] According to the above scheme, the transmission system is a dual-axis piston mechanism, which includes a crank eccentric shaft, a needle bearing, a needle slider, a frame structure and two single-rod piston struts. The output end of the crank eccentric shaft is connected to the motor rotor of the rotary swing motor, the crank eccentric shaft is adapted to the needle bearing, the needle bearing is connected to the needle slider, the needle slider is slidably mounted on the needle bearing retainer, and the needle bearing retainer is mounted on the frame structure; the frame structure is slidably mounted on the inner wall of the cylinder fixed connecting part, the two piston push plates are respectively connected to the two ends of the two piston connecting plates, and the two piston connecting plates and the two piston push plates are enclosed to form a sliding frame structure; the two single-rod piston struts are symmetrically arranged at the two ends of the frame structure, and one end of the single-rod piston strut is connected to the frame structure, and the other end of the single-rod piston strut extends into the cylinder and is connected to the piston head.

[0006] According to the above scheme, the frame structure includes two piston connecting plates and two piston push plates, the two piston connecting plates are respectively slidably connected to the inner walls of the cylinder fixed connecting parts, the two piston push plates are respectively connected to the two ends of the two piston connecting plates, and the two piston connecting plates and the two piston push plates are enclosed to form a sliding frame structure; the inner side wall of the frame structure is installed with a needle bearing retainer.

[0007] According to the above scheme, the closed end of the cylinder body is a single-rod intake valve seat, and a number of air holes that can be connected to the outside world are arranged at intervals on the single-rod intake valve seat. The air holes are adapted to the single-rod valve plate arranged inside the single-rod intake valve seat; when the pressure in the inner cavity decreases, the single-rod valve plate opens, and air enters the inner cavity from the air holes.

[0008] According to the above scheme, a one-way piston valve connecting the inner cavity and the outer cavity is provided on the piston head; when the pressure in the inner cavity decreases, the air in the inner cavity is sucked into the outer cavity through the one-way piston valve.

[0009] According to the above scheme, a valve power piston is nested outside the single-rod intake valve seat, the valve power piston is connected to a valve thrust piston, and the valve thrust piston is connected to the lubricating oil check valve seat; one end of the valve thrust piston is connected to one end of the top exhaust valve, the top exhaust valve is embedded above the top row cylinder sleeve of the outer cavity and is connected to the outer cavity. When the pressure in the inner cavity increases, the valve power piston pushes inward, and the valve thrust piston is pushed hydraulically, thereby pushing open the top exhaust valve.

[0010] According to the above scheme, the cylinder body connecting seat and the cylinder head are connected by a plug screw; an adjusting movable coil is provided below the plug screw, a pressure adjusting coil is installed on the inner wall side of the adjusting movable coil, and the adjusting movable coil and the pressure adjusting coil are coaxially embedded in the gap between the cylinder body connecting seat and the top row cylinder sleeve.

[0011] According to the above solution, a heat dissipation gasket is provided between the end of the top row cylinder sleeve and the cylinder head.

[0012] According to the above scheme, the cylinder body fixing connector is a hollow structure, a central shaft is provided inside the cylinder body fixing connector, and the central shaft is nested in the middle of the motor rotor; the transmission mechanism is provided inside the cylinder body fixing connector.

[0013] Compared with the prior art, the beneficial effects of the present invention are as follows: the present invention couples the free piston internal combustion engine and the generator into one, and the entire power generation group is highly efficient, energy-saving and has clean emissions; two rotary pendulum motors respectively control the pistons at both ends, and the piston support rod is evenly stressed and does not deform by setting a frame structure, and the exhaust gas generated by the explosion is hydraulically pushed to be discharged by the valve, and fresh air enters the cylinder through the single-rod valve plate on the single-rod intake valve seat and the two one-way piston valves on the piston head, thereby realizing ventilation in the cylinder, and the entire system is stable and reliable. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 The figure is a schematic diagram of the overall structure of an embodiment of the present invention.

[0015] Figure 2 It is a schematic diagram of the connection between the cylinder body connecting seat fixing connecting piece and the power system in this embodiment.

[0016] Figure 3 Schematic diagram of the connection between the transmission mechanism and the exhaust valve system in this embodiment.

[0017] Figure 4 Schematic diagram of the structure of the exhaust valve system in this embodiment.

[0018] In the figure: 1-rotating pendulum motor; 2-motor stator; 3-motor rotor; 4-cylinder fixed connector; 4.1-center axis; 5-crank eccentric shaft; 6-needle roller slider; 7-piston connecting plate; 8-piston push plate; 9-piston support rod; 10-piston head; 11-needle roller bearing retainer; 12-one-way piston valve; 13-cylinder connecting seat; 14-cylinder head; 15-top row cylinder liner; 16-top exhaust valve; 17-single rod intake valve seat; 18-plug screw; 19-adjusting dynamic coil; 20-pressure adjusting ring; 21-heat dissipation gasket; 22-single rod valve plate; 23-valve power piston; 24-valve thrust piston; 25-lubricating oil check valve seat. DETAILED DESCRIPTION

[0019] In order to make the purpose, technical solution and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0020] In the description of the present invention, it should be noted that the orientation or positional relationship indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inside", "outside", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention; the terms "first", "second", and "third" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance; in addition, unless otherwise clearly specified and limited, the terms "installed", "provided with", "connected", etc. should be understood in a broad sense, for example, "connected" can be a fixed connection, a detachable connection, or an integral connection, a mechanical connection, or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0021] like Figure 1~Figure 3 A dual-shaft compression ignition free piston generator set is shown, comprising a power system, a transmission mechanism and two exhaust valve systems, wherein the power system comprises two rotary pendulum motors 1 arranged front and back, a cylinder fixing connector 4 is provided in the middle of the two rotary pendulum motors 1, and the cylinder fixing connector 4 is connected to the outer shell of the rotary pendulum motor 1; the motor stator 2 of the rotary pendulum motor 1 surrounds the outer ring of the motor rotor 3, the transmission mechanism is arranged inside the cylinder fixing connector 4, the output end of the transmission mechanism is connected to the motor rotor 3 of the rotary pendulum motor 1, and the input end of the transmission mechanism is respectively connected to the output end of the two exhaust valve systems. The exhaust valve system comprises a cylinder block connection seat 13, a top row cylinder sleeve 15 and a cylinder head 14, wherein one end of the cylinder block connection seat 13 is closed and the other end is connected to the cylinder head 14; the top row cylinder sleeve 15 is coaxially nested in the cylinder block connection seat 13; the input end of the transmission mechanism passes through the closed end of the cylinder block connection seat 13, extends into the top row cylinder sleeve 15, and is connected to a piston head 10 slidably mounted in the top row cylinder sleeve 15; the piston head 10 can slide along the inner wall of the top row cylinder sleeve 15, dividing the top row cylinder sleeve 15 into two cavities, wherein the inner cavity is close to the closed end, and the outer cavity is close to the cylinder head 14 end.

[0022] In this embodiment, the cylinder body fixing connector 4 is a hollow structure, a central shaft 4.1 is provided inside the cylinder body fixing connector 4, and the central shaft 4.1 is nested in the middle of the motor rotor 3; the transmission mechanism is arranged inside the cylinder body fixing connector 4. The rotary pendulum motor 1 is mounted on a motor seat.

[0023] Preferably, if Figure 4As shown, the transmission system is a single-rod piston mechanism, which includes an eccentric crank shaft 5, a needle roller slider 6, a frame structure and two single-rod piston struts 9, the output end of the eccentric crank shaft 5 is connected to the motor rotor 3 of the rotary pendulum motor 1, the input end of the eccentric crank shaft 5 is connected to the needle roller bearing, the needle roller bearing is connected to the needle roller slider 6, the needle roller slider 6 is slidably mounted on the needle roller bearing retainer 11 (the needle roller slider 6 can slide along the needle roller bearing retainer 11), and the needle roller bearing retainer 11 is arranged on the frame structure; the frame structure is slidably mounted on the inner wall of the cylinder body fixed connection member 4, the two piston push plates 8 are respectively connected to the two ends of the two piston connecting plates 7, and the two piston connecting plates 7 and the two piston push plates 8 are enclosed to form a sliding frame structure; the two single-rod piston struts 9 are symmetrically arranged at the two ends of the frame structure, and one end of the single-rod piston strut 9 is connected to the frame structure, and the other end of the single-rod piston strut 9 extends into the interior of the top row cylinder sleeve 15 and is connected to the piston head 10. In this embodiment, the sliding of the needle roller slider 6 drives the needle roller bearing and the crank eccentric shaft 5 to rotate, and then drives the motor rotor 3 to rotate. This is a prior art and will not be described in detail here. At the initial startup, the motor provides initial power. When the motor rotor 3 rotates, the crank eccentric shaft 5 rotates accordingly, and then the needle roller slider 5 is driven to move through the rotation of the needle roller bearing (the motor rotor 3 drives the crank eccentric shaft 5 to swing left and right in the upper part, so the needle roller slider 6 is in a state of sliding up and down in the needle roller bearing retainer 11), so that the piston obtains sufficient kinetic energy.

[0024] In this embodiment, the frame structure includes two piston connecting plates 7 and two piston push plates 8. The two piston connecting plates 7 are respectively slidably connected to the inner walls of the cylinder fixed connecting piece 4. The two piston push plates 8 are respectively connected to the two ends of the two piston connecting plates 7. The two piston connecting plates 7 and the two piston push plates 8 are enclosed to form a sliding frame structure; the inner side wall of the frame structure is installed with a needle bearing retainer 11.

[0025] Preferably, if Figure 3 As shown, a one-way piston valve 12 connecting the inner cavity and the outer cavity is provided on the piston head 10 ; when the pressure in the outer cavity decreases, the air in the inner cavity is sucked into the outer cavity through the one-way piston valve 12 .

[0026] Preferably, the closed end of the cylinder body is a single-rod intake valve seat 17, and a plurality of air holes that can communicate with the outside world are arranged at intervals on the single-rod intake valve seat 17, and the air holes are adapted to the single-rod valve plate 22 arranged inside the single-rod intake valve seat 17; when the pressure in the inner cavity decreases, the single-rod valve plate 22 opens, and air enters the inner cavity from the air holes.

[0027] Preferably, a valve power piston 23 is nested outside the single-rod intake valve seat 17, and the outer ring of the valve power piston 23 is connected to a valve thrust piston 24, which is connected to a lubricating oil check valve seat 25; one end of the valve thrust piston 24 is connected to one end of the top exhaust valve 16, and the top exhaust valve 16 is embedded above the top exhaust cylinder sleeve 15 of the outer cavity and is connected to the outer cavity; when the pressure in the inner cavity increases, the valve power piston 23 is pushed inward due to the pressure, and the valve thrust piston 24 is pushed hydraulically, thereby pushing open the top exhaust valve 16 to discharge the exhaust gas from the outer cavity. In this embodiment, the valve thrust piston 24 is driven by hydraulic pressure, which is a prior art and will not be described in detail here.

[0028] Preferably, the cylinder body connection base 13 and the cylinder head 14 are connected by a plug screw 18; an adjusting movable coil 19 is provided below the plug screw 18, a pressure adjusting coil 20 is installed on the inner wall of the adjusting movable coil 19, and the adjusting movable coil 19 and the pressure adjusting coil 20 are coaxially embedded in the gap between the cylinder body connection base 13 and the top row cylinder sleeve 15. A heat dissipation gasket 21 is provided between the end of the top row cylinder sleeve 15 and the cylinder head 14, so that the temperature of the gas in the cylinder can be reduced in time after the explosion.

[0029] In this embodiment, Figure 4 As shown, the exhaust valve system has two groups. For the convenience of description, the left end is the left exhaust valve system, and the right end is the right exhaust valve system; the two exhaust valve systems are connected by two single-rod piston struts 9. The working principle of this embodiment is:

[0030] Turn on the rotary pendulum motor 1, and the motor rotor 3 drives the single-rod piston support rod 9 to move to the left through the transmission mechanism, so that the pistons of the two exhaust valve systems obtain sufficient kinetic energy; in the process of reducing the kinetic energy, the gas-oil mixture in the outer cavity of the top cylinder sleeve 15 of the left exhaust valve system reaches the compression combustion condition. At this time, in the left exhaust valve system, the huge reverse thrust generated by the combustion and explosion of the gas in the outer cavity causes the piston head 10 and the single-rod piston support rod 9 to rebound and move inward, the inner cavity space becomes smaller, the pressure becomes greater, and the valve power piston 23 is squeezed backward accordingly, and the valve thrust piston 24 is pushed by hydraulic means, and the top exhaust valve 16 connected thereto is pushed accordingly, and the exhaust gas generated by the gas explosion in the outer cavity is discharged through the top exhaust valve 16. When the single-rod piston support rod 9 of the left exhaust valve system moves to the right, the frame structure drives the single-rod piston support rod 9 of the right exhaust valve system to move to the right synchronously. At this time, the gas-oil mixture in the outer cavity of the right exhaust valve system is compressed and ignited by the thrust of the piston head 10, and the pressure in the outer cavity increases. The piston head 10 drives the single-rod piston support rod 9 to be pushed back again (moving to the left). At this time, in the left exhaust valve system, the volume of its inner cavity increases, the pressure decreases, the single-rod valve plate 22 opens, and fresh air enters the inner cavity through the air holes on the single-rod intake valve seat 17 and the two one-way piston valves 12 on the piston head 10, realizing the ventilation of the inner cavity; the volume of the outer cavity decreases, and the gas-oil mixture in the outer cavity reaches the compression combustion conditions again to burn and explode, generating a reverse thrust so that the piston head 10 drives the single-rod piston support rod 9 to rebound and move to the right, and so on. Each time the piston head 10 and the single-rod piston support rod 9 move, the frame structure moves left and right accordingly, the needle roller slider 6 moves left and right accordingly and slides up and down along the frame structure, and the crank eccentric shaft 5 connected to the needle roller bearing 5 drives the motor rotor 3 to rotate, so that the rotary pendulum motor 1 reciprocates to generate electricity.

[0031] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any changes or substitutions that can be easily conceived by any technician familiar with the technical field within the technical scope disclosed in the present invention should be covered within the protection scope of the present invention.

Claims

1. A dual-shaft compression ignition free piston generator set, characterized in that: It comprises a power system, a transmission mechanism and two sets of exhaust valve systems, wherein the power system comprises two rotary pendulum motors arranged front and back, wherein a cylinder fixing connection piece is provided in the middle of the two rotary pendulum motors, wherein the cylinder fixing connection piece is connected to the outer shell of the rotary pendulum motor, and the motor stator of the rotary pendulum motor surrounds the outer ring of the motor rotor; the transmission mechanism is arranged inside the cylinder fixing connection piece, wherein the output end of the transmission mechanism is connected to the motor rotor of the rotary pendulum motor, and the input end of the transmission mechanism is respectively connected to the output ends of the two exhaust valve systems; the exhaust valve system comprises a cylinder connecting seat, a top row cylinder sleeve and a cylinder head, wherein one end of the cylinder connecting seat is closed, and the other end is connected to the cylinder head; the top row cylinder sleeve is coaxially nested in the cylinder connecting seat; the input end of the transmission mechanism passes through the closed end of the cylinder connecting seat, extends into the interior of the top row cylinder sleeve, and is connected to a piston head slidably installed in the top row cylinder sleeve; the piston head can slide along the inner wall of the top row cylinder sleeve to separate the top row cylinder sleeve into two cavities, wherein the inner cavity is close to the closed end, and the outer cavity is close to the cylinder head end; The closed end of the cylinder body is a single-rod intake valve seat, on which a plurality of air holes that can communicate with the inner cavity are arranged at intervals, and the air holes are adapted to the single-rod valve plate arranged inside the single-rod intake valve seat; The piston head is provided with a one-way piston valve connecting the inner cavity and the outer cavity; when the pressure of the outer cavity decreases, the air in the inner cavity is sucked into the outer cavity through the one-way piston valve; A valve power piston is nested outside the single-rod intake valve seat, and the valve power piston is connected to a valve thrust piston, which is connected to a lubricating oil check valve seat; one end of the valve thrust piston is connected to one end of a top exhaust valve, and the top exhaust valve is embedded above the top row cylinder sleeve of the outer cavity and is connected to the outer cavity. When the pressure in the inner cavity increases, the valve power piston pushes inward, and the valve thrust piston is pushed hydraulically, thereby pushing open the top exhaust valve.

2. The dual-shaft compression ignition free piston generator set according to claim 1, characterized in that: The transmission mechanism is a double-axis piston mechanism, which includes an eccentric crank shaft, a needle bearing, a needle slider, a frame structure and two single-rod piston struts. The output end of the eccentric crank shaft is connected to the motor rotor of the rotary pendulum motor, the eccentric crank shaft is matched with the needle bearing, the needle bearing is connected to the needle slider, the needle slider is slidably mounted on the needle bearing retainer, and the needle bearing retainer is mounted on the frame structure; the frame structure is slidably mounted on the inner wall of the cylinder fixed connecting piece, the two piston push plates are respectively connected to the two ends of the two piston connecting plates, and the two piston connecting plates and the two piston push plates are enclosed to form a sliding frame structure; the two single-rod piston struts are symmetrically arranged at the two ends of the frame structure, and one end of the single-rod piston strut is connected to the frame structure, and the other end of the single-rod piston strut extends into the cylinder and is connected to the piston head.

3. The dual-shaft compression ignition free piston generator set according to claim 2, characterized in that: The frame structure includes two piston connecting plates and two piston push plates. The two piston connecting plates are respectively slidably connected to the inner walls of the cylinder fixed connecting parts. The two piston push plates are respectively connected to the two ends of the two piston connecting plates. The two piston connecting plates and the two piston push plates are enclosed to form a sliding frame structure. The inner side wall of the frame structure is installed with a needle bearing retainer.

4. The dual-shaft compression ignition free piston generator set according to claim 1, characterized in that: The cylinder body connecting seat and the cylinder cover are connected by a plug screw; an adjusting movable ring is provided below the plug screw, a pressure adjusting ring is installed on the inner wall side of the adjusting movable ring, and the adjusting movable ring and the pressure adjusting ring are coaxially embedded in the gap between the cylinder body connecting seat and the top row cylinder sleeve.

5. The dual-shaft compression ignition free piston generator set according to claim 1, characterized in that: A heat dissipation gasket is provided between the end of the top row cylinder sleeve and the cylinder cover.

6. The dual-shaft compression ignition free piston generator set according to claim 1, characterized in that: The cylinder body fixing connection piece is a hollow structure, a central shaft is arranged inside the cylinder body fixing connection piece, and the central shaft is nested in the middle of the motor rotor; the transmission mechanism is arranged inside the cylinder body fixing connection piece.

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