Liquid nitrogen power self-circulation power generation system

Abstract

The invention discloses a liquid nitrogen power self-circulation power generation system, and belongs to the technical field of power generation equipment, the liquid nitrogen power self-circulation power generation system comprises a vaporizer, a gas storage tank, a nitrogen power engine, a compressor and a generator, the input end of the vaporizer is used for receiving liquid nitrogen, the output end of the vaporizer is connected with the input end of the gas storage tank, and the output end of the gas storage tank is connected with the gas inlet end of the nitrogen power engine; the exhaust end of the nitrogen power engine is connected with the suction end of the compressor, the exhaust end of the compressor is connected with the other input end of the gas storage tank, and the mechanical energy output end of the nitrogen power engine is connected with the generator and used for driving the generator to generate electricity. In the whole power generation process, only nitrogen recycling is involved, and pollutant emission caused by combustion is completely eliminated; high-pressure potential energy generated in the liquid nitrogen vaporization process is used for directly pushing the piston to move, and efficient energy conversion is achieved. Nitrogen exhausted by the nitrogen power engine is recycled through the compressor, pressurized to rated pressure and fed back to the nitrogen power engine for use, and a self-circulation system is formed.

Description

Technical Field

[0001] The invention belongs to the technical field of power generation equipment, and in particular relates to a liquid nitrogen powered self-circulating power generation system. Background Art

[0002] Among the existing power generation technologies, the widely used ones are fuel engines driven by fossil fuels, such as gasoline, diesel or natural gas, to generate electricity; these traditional power generation systems rely on the combustion process to generate heat energy, which is then converted into mechanical energy and electrical energy. However, they have the following significant defects: (1) The combustion of fossil fuels will produce a large amount of greenhouse gases and other harmful emissions, which will pollute the environment. This will not only aggravate global warming and extreme climate changes, but also pose a threat to human health. (2) Due to the heat loss during the combustion process, the energy conversion efficiency of traditional fuel engines is relatively low, resulting in a large amount of energy waste. The explosive force generated during the combustion process causes the equipment to be accompanied by large noise and vibration during operation, affecting the surrounding environment and the working conditions of the operators. (3) The complex fuel supply, ignition and starting system increases the complexity of the system and also increases the maintenance cost. The frequent maintenance and maintenance requirements limit the reliability and economy of the system. Therefore, in order to solve the significant defects in the above-mentioned existing power generation technologies, it is urgent to develop a clean, efficient and safe liquid nitrogen powered self-circulating power generation system. Summary of the invention

[0003] The present invention aims at solving the above problems, makes up for the deficiencies of the prior art, and provides a clean, efficient and safe liquid nitrogen powered self-circulating power generation system.

[0004] To achieve the above purpose, the present invention adopts the following technical solution.

[0005] The liquid nitrogen powered self-circulating power generation system provided by the present invention comprises a vaporizer, a gas storage tank, a nitrogen powered engine, a compressor and a generator, wherein the input end of the vaporizer is used to access liquid nitrogen, the output end of the vaporizer is connected to the input end of the gas storage tank, the output end of the gas storage tank is connected to the intake end of the nitrogen powered engine, the exhaust end of the nitrogen powered engine is connected to the intake end of the compressor, the exhaust end of the compressor is connected to the other input end of the gas storage tank, and the mechanical energy output end of the nitrogen powered engine is connected to the generator for driving the generator to generate electricity.

[0006] As a preferred embodiment of the present invention, the nitrogen powered engine is not provided with a fuel supply system, an ignition system, and a starting system. The nitrogen powered engine includes an engine housing, an air intake and exhaust system, a power unit, and a valve mechanism. The air intake and exhaust system and the valve mechanism are all connected to the engine housing. The power unit is arranged in the engine housing. The power unit is connected to the valve mechanism, and the valve mechanism is used in conjunction with the air intake and exhaust system.

[0007] As another preferred embodiment of the present invention, the engine casing includes an oil pan, a crankcase, a cylinder block, and a cylinder head. The bottom of the crankcase is connected to the oil pan, and the top of the crankcase is symmetrically connected to two rows of cylinder blocks in a V-shape. The top of each cylinder block is fixedly connected to the cylinder head, and each cylinder head is provided with an intake valve and an exhaust valve connected to the interior of the cylinder block.

[0008] As another preferred embodiment of the present invention, the intake and exhaust system includes an intake branch pipe and an exhaust branch pipe, and the intake branch pipe and the exhaust branch pipe are both arranged on the sides of the two rows of cylinder blocks and cylinder heads; each branch intake port on the intake branch pipe is connected to an intake valve in each cylinder head, and each branch exhaust port on the exhaust branch pipe is connected to an exhaust valve in each cylinder head; the total intake port of the intake branch pipe is connected to the output end of the air storage tank through a pipeline, and the total exhaust port of the exhaust branch pipe is connected to the suction end of the compressor through a pipeline.

[0009] Furthermore, an electronic speed regulator, an actuator, and a flow control valve are connected to the pipeline between the main air inlet of the air intake branch pipe and the output end of the air storage tank.

[0010] As another preferred embodiment of the present invention, the power unit includes a crankshaft, a connecting rod, and a piston. The crankshaft is arranged in the lower part of the crankcase, one end of the crankshaft is connected to the valve mechanism arranged on the crankcase, and the other end of the crankshaft is connected to a flywheel, which is arranged on the outside of the crankcase and connected to the generator; a piston is correspondingly arranged in each cylinder body, and the piston is connected to the crankshaft through a connecting rod.

[0011] As another preferred embodiment of the present invention, the valve mechanism includes a camshaft and a timing gear box. The camshaft is connected to the upper part of the crankcase, and the camshaft is arranged parallel to the crankshaft in the lower part of the crankcase. One end of the camshaft is connected to a gear of the meshing gear set in the timing gear box, and the other end of the camshaft is fixed to the inner wall of the crankcase through a bearing, and the other gear of the meshing gear set is connected to one end of the crankshaft. Under the rotation of the crankshaft, the meshing gear set drives the camshaft to operate, and the operation of the camshaft is used to control the opening and closing of the intake valve and the exhaust valve.

[0012] Furthermore, an oil pump is arranged beside the crankshaft in the crankcase, the oil extraction port of the oil pump is connected to the oil pan through a pipeline, the oil outlet port of the oil pump is connected to the oil filter through a pipeline, and the oil filter is symmetrically installed on both sides outside the crankcase.

[0013] As another preferred embodiment of the present invention, the vaporizer is an air-temperature low-temperature liquid vaporizer.

[0014] Beneficial effects of the present invention: 1. The liquid nitrogen powered self-circulating power generation system provided by the present invention is mainly composed of a vaporizer, a gas storage tank, a nitrogen powered engine, a compressor and a generator, wherein the nitrogen powered engine cancels the traditional fuel supply system, ignition system and starting system, greatly simplifies the engine structure, and can reduce manufacturing and maintenance costs; since there is no severe vibration and noise caused by combustion, the power generation system of the present invention has only extremely low noise and tiny mechanical vibration during operation, ensuring the smooth operation of the nitrogen powered engine and the power generation system.

[0015] 2. The entire power generation process of the present invention only involves the recycling of nitrogen, which completely eliminates the pollutant emissions caused by combustion; the high-pressure potential energy generated during the vaporization of liquid nitrogen is used to directly drive the piston movement, thereby achieving efficient energy conversion; at the same time, the nitrogen discharged from the nitrogen-powered engine is recovered by the compressor and pressurized to the rated pressure and sent back to the gas storage tank, and then supplied to the nitrogen-powered engine for use, forming a complete self-circulating system. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 The figure is a schematic structural diagram of the liquid nitrogen powered self-circulating power generation system of the present invention.

[0017] Figure 2 This is one of the three-dimensional structural schematic diagrams of the nitrogen-powered engine of the liquid nitrogen-powered self-circulating power generation system of the present invention.

[0018] Figure 3 This is the second three-dimensional structural schematic diagram of the nitrogen-powered engine of the liquid nitrogen-powered self-circulating power generation system of the present invention.

[0019] Figure 4 The figure is a schematic diagram of the side structure of the nitrogen powered engine of the liquid nitrogen powered self-circulating power generation system of the present invention.

[0020] Figure 5 The figure is a schematic diagram of the internal structure of the nitrogen powered engine of the liquid nitrogen powered self-circulating power generation system of the present invention.

[0021] Markings in the figure: 1 is a carburetor, 2 is a gas tank, 3 is a generator, 4 is a nitrogen-powered engine, 5 is a compressor; 7 is a timing gear box, 8 is a crankcase, 9 is an oil pan, 10 is an oil filter, 11 is a cylinder head, 12 is an exhaust branch pipe, 13 is an intake branch pipe, 14 is a cylinder block, 15 is a connecting rod, 16 is a piston, 17 is a crankshaft, 18 is a camshaft, 19 is a flywheel, 20 is a branch exhaust port, 21 is a main exhaust port, 22 is a branch intake port, and 23 is a main intake port. DETAILED DESCRIPTION

[0022] In order to make the technical problems, technical solutions and beneficial effects solved by the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and specific implementation methods. It should be understood that the specific implementation methods described herein are only used to explain the present invention and are not used to limit the present invention.

[0023] Combination Figures 1 to 5 As shown, the liquid nitrogen powered self-circulating power generation system provided by the embodiment of the present invention includes a vaporizer 1, a gas tank 2, a nitrogen powered engine 4, a compressor 5 and a generator 3, wherein the input end of the vaporizer 1 is used to access liquid nitrogen, and the output end of the vaporizer 1 is connected to the input end of the gas tank 2, and the vaporizer 1 adopts an air temperature low temperature liquid vaporizer, which uses ambient air as a heat source, and through an efficient heat exchange design, the liquid nitrogen is quickly vaporized in a short time and reaches the required pressure and temperature conditions; the output end of the gas tank 2 is connected to the air inlet end of the nitrogen powered engine 4, the exhaust end of the nitrogen powered engine 4 is connected to the air intake end of the compressor 5, and the exhaust end of the compressor 5 is connected to the other input end of the gas tank 2; the mechanical energy output end of the nitrogen powered engine 4 is connected to the generator 3, which is used to drive the generator 3 to generate electricity.

[0024] Specifically, the nitrogen powered engine 4 is not provided with a fuel supply system, an ignition system, and a starting system. The nitrogen powered engine 4 includes an engine housing, an intake and exhaust system, a power unit, and a valve mechanism. The intake and exhaust system and the valve mechanism are all connected to the engine housing. The power unit is arranged in the engine housing, and the power unit is connected to the valve mechanism. The valve mechanism is used in conjunction with the intake and exhaust system; the engine housing includes an oil pan 9, a crankcase 8, a cylinder block 14, and a cylinder head 11. The bottom of the crankcase 8 is connected to the oil pan 9, and the top of the crankcase 8 is symmetrically connected to two rows of cylinder blocks 14 in a V shape. The number of cylinder blocks 14 is designed according to actual needs, and each cylinder block 14 is fixed at the top. The cylinder head 11 is connected, and each cylinder head 11 is provided with an intake valve and an exhaust valve connected to the inside of the cylinder body 14; the intake and exhaust system includes an intake branch pipe 13 and an exhaust branch pipe 12, and the intake branch pipe 13 and the exhaust branch pipe 12 are arranged on the sides of the two rows of cylinder bodies 14 and the cylinder head 11, each branch intake port 22 on the intake branch pipe 13 corresponds to the intake valve in each cylinder head 11, and each branch exhaust port 20 on the exhaust branch pipe 12 corresponds to the exhaust valve in each cylinder head 11, the total intake port 23 of the intake branch pipe 13 is connected to the output end of the air storage tank 2 through a pipeline, and the total exhaust port 21 of the exhaust branch pipe 12 is connected to the suction end of the compressor 5 through a pipeline.

[0025] Specifically, an electronic speed governor, an actuator, and a flow control valve are provided on the pipeline between the total air inlet 23 of the air inlet branch pipe 13 and the output end of the air storage tank 2. The electronic speed governor, the actuator, and the flow control valve are provided to ensure the speed and power of the nitrogen-powered engine 4 at any time and reliably as needed.

[0026] Specifically, the power unit is arranged in the crankcase 8, and the power unit includes a crankshaft 17, a connecting rod 15, and a piston 16. The crankshaft 17 is arranged in the lower part of the crankcase 8, one end of the crankshaft 17 is connected to the valve mechanism arranged at one end of the crankcase 8, and the other end of the crankshaft 17 is connected to the flywheel 19 arranged at the other end of the crankcase 8. The flywheel 19 is connected to the generator 3 through a belt. The rotation of the flywheel 19 drives the rotor of the generator 3 to rotate, thereby driving the generator 3 to generate electricity; a piston 16 is correspondingly arranged in each cylinder body 14, and the piston 16 is connected to the crankshaft 17 through a connecting rod 15. The valve mechanism includes a camshaft 18 and a timing gearbox 7. The camshaft 18 is connected to the upper inner portion of the crankcase 8. The camshaft 18 is arranged parallel to the crankshaft 17 at the lower inner portion of the crankcase 8. One end of the camshaft 18 is connected to a gear of a meshing gear set in the timing gearbox 7. The other end of the camshaft 18 is fixed to the inner wall of the crankcase 8 through a bearing. Another gear of the meshing gear set is connected to one end of the crankshaft 17. Under the rotation of the crankshaft 17, the meshing gear set drives the camshaft 18 to operate, and the operation of the camshaft 18 is used to control the opening and closing of the intake valve and the exhaust valve. According to the specified valve timing phase, the camshaft 18 can accurately complete the opening and closing of the intake valve and the exhaust valve, so as to realize the normal, effective and stable operation of the nitrogen-powered engine 4.

[0027] Specifically, an oil pump is arranged beside the crankshaft 17 in the crankcase 8, and the oil extraction port of the oil pump is connected to the oil pan 9 through a pipeline, and the oil outlet port of the oil pump is connected to the oil filter 10 through a pipeline. Two oil filters 10 are arranged, and the two oil filters 10 are symmetrically installed on both sides outside the crankcase 8. The oil pan 9 contains lubricating oil. The oil in the oil pan 9 is extracted by the oil pump and filtered by the oil filter 10, and then delivered to various components that need lubrication in the nitrogen powered engine 4.

[0028] In summary, the nitrogen-powered engine 4 of the present invention is not equipped with a fuel supply system, an ignition system, or a starting system compared to a traditional fuel engine, so there is no negative impact of huge vibration, noise, potential safety hazard, or loss; instead of using fuels such as gasoline, diesel, kerosene, natural gas, or hydrogen, the high-pressure potential energy generated by the nitrogen produced during the vaporization of liquid nitrogen is used to drive the piston 16 to reciprocate and then drive the crankshaft 17 to achieve rotational motion through the connecting rod 15, and output torque through the rotating crankshaft 17 to achieve work on the generator 3 and drive the generator 3 to generate electricity. Moreover, since the fuel supply system, ignition system, or starting system are not equipped, the nitrogen-powered engine 4 of the present invention simplifies the overall structural design of the nitrogen-powered engine 4 compared to a traditional fuel engine, and there is no crank at the same angle, no two pistons 16 that reach the highest point at the same time, and no two cylinder bodies 14 that work at the same time, so that the operation of the nitrogen-powered engine 4 is more stable.

[0029] The nitrogen powered engine 4 of the liquid nitrogen powered self-circulating power generation system of the present invention has the following characteristics: low temperature, low noise, low vibration, low consumption, and adjustable speed operation. Among them, the characteristic of low temperature is specifically as follows: since the energy medium used in the present invention is liquid nitrogen at -196°C, the liquid nitrogen is vaporized by the vaporizer 1 and then input into the nitrogen-powered engine 4 to do work, so the operation process of the nitrogen-powered engine 4 is low temperature; the characteristic of low noise is specifically as follows: the high-pressure nitrogen provided to the nitrogen-powered engine 4 by the present invention is at constant pressure, and the pressure change is small, so the noise generated during operation is very small; the characteristic of low vibration is specifically as follows: the nitrogen-powered engine 4 relies on continuous vaporization of liquid nitrogen to generate nitrogen with high-pressure potential energy for input to do work, and does not produce deflagration, so the vibration during operation is very small; the characteristic of low consumption is specifically as follows: since the nitrogen-powered engine 4 does not require fuel, the nitrogen-powered engine 4 reduces the energy consumption cost compared with the traditional fuel engine; the adjustable speed operation is specifically as follows: by adjusting the electronic speed regulator and flow control valve on the pipeline between the total air inlet 23 of the air inlet branch pipe 13 and the output end of the air storage tank 2, the nitrogen flow and flow rate entering the nitrogen-powered engine 4 can be controlled, so the rated speed of the nitrogen-powered engine 4 can be arbitrarily set within the range of 0 to 1000 rpm.

[0030] By using the liquid nitrogen powered self-circulating power generation system of the present invention, power and power can be provided for areas without power supply, especially in emergency situations or remote locations. The liquid nitrogen powered self-circulating power generation system of the present invention can generate electricity without ignition in places without power supply, providing reliable power support. The liquid nitrogen powered self-circulating power generation system of the present invention can recover the nitrogen discharged by the nitrogen powered engine 4 for recycling.

[0031] The working principle of the liquid nitrogen powered self-circulating power generation system of the present invention is as follows: the liquid nitrogen connected therein is vaporized by using the vaporizer 1. During the vaporization process of the liquid nitrogen in the vaporizer 1, high-pressure nitrogen is generated and stored in the gas storage tank 2. In this way, high-pressure potential energy can be formed in the gas storage tank 2. The gas storage tank 2 transports the nitrogen with high-pressure potential energy to the nitrogen powered engine 4. The nitrogen with high-pressure potential energy enters the cylinder body 14 through the intake valve in the cylinder head 11 through the intake branch pipe 13 of the nitrogen powered engine 4, so as to push the piston 16 to reciprocate and then drive the piston 16 through the connecting rod 15. The crankshaft 17 realizes rotational motion, and finally the nitrogen-powered engine 4 can output mechanical power energy under the action of high-pressure nitrogen. The mechanical power energy output by the nitrogen-powered engine 4 drives the generator 3 to operate, thereby realizing the power generation of the generator 3. At the same time, the nitrogen after the crankshaft 17 has done work can be discharged outside the nitrogen-powered engine 4 through the exhaust valve and the exhaust branch pipe 12; the set compressor 5 is then used to recover the nitrogen discharged by the nitrogen-powered engine 4, and the compressor 5 is pressurized to the rated pressure and returned to the nitrogen-powered engine 4, forming a gas self-circulation.

[0032] It can be understood that the above specific description of the present invention is only used to illustrate the present invention and is not limited to the technical solutions described in the embodiments of the present invention. Those skilled in the art should understand that the present invention can still be modified or replaced by equivalents to achieve the same technical effects; as long as the use requirements are met, they are within the protection scope of the present invention.

Claims

1. Liquid nitrogen powered self-circulating power generation system, characterized by: It includes a vaporizer, a gas tank, a nitrogen-powered engine, a compressor and a generator. The input end of the vaporizer is used to connect liquid nitrogen, the output end of the vaporizer is connected to the input end of the gas tank, the output end of the gas tank is connected to the intake end of the nitrogen-powered engine, the exhaust end of the nitrogen-powered engine is connected to the intake end of the compressor, the exhaust end of the compressor is connected to the other input end of the gas tank, and the mechanical energy output end of the nitrogen-powered engine is connected to the generator for driving the generator to generate electricity.

2. The liquid nitrogen powered self-circulating power generation system according to claim 1, characterized in that: The nitrogen powered engine is not provided with a fuel supply system, an ignition system, and a starting system. The nitrogen powered engine comprises an engine casing, an air intake and exhaust system, a valve mechanism, and a power unit. The air intake and exhaust system and the valve mechanism are all connected to the engine casing. The power unit is arranged in the engine casing. The power unit is connected to the valve mechanism, and the valve mechanism is used in conjunction with the air intake and exhaust system.

3. The liquid nitrogen powered self-circulating power generation system according to claim 2, characterized in that: The engine casing includes an oil pan, a crankcase, a cylinder block, and a cylinder head. The bottom of the crankcase is connected to the oil pan, and the top of the crankcase is symmetrically connected to two rows of cylinder blocks in a V shape. The top of each cylinder block is fixedly connected to the cylinder head, and each cylinder head is provided with an intake valve and an exhaust valve that are connected to the inside of the cylinder block.

4. The liquid nitrogen powered self-circulating power generation system according to claim 3, characterized in that: The intake and exhaust system includes an intake branch pipe and an exhaust branch pipe, both of which are arranged on the sides of the two rows of cylinder blocks and cylinder heads; each branch intake port on the intake branch pipe is connected to the intake valve in each cylinder head, and each branch exhaust port on the exhaust branch pipe is connected to the exhaust valve in each cylinder head; the total intake port of the intake branch pipe is connected to the output end of the air storage tank through a pipeline, and the total exhaust port of the exhaust branch pipe is connected to the suction end of the compressor through a pipeline.

5. The liquid nitrogen powered self-circulating power generation system according to claim 4, characterized in that: The pipeline between the main air inlet of the air inlet branch pipe and the output end of the air storage tank is connected with an electronic speed regulator, an actuator and a flow control valve.

6. The liquid nitrogen powered self-circulating power generation system according to claim 3, characterized in that: The power unit includes a crankshaft, a connecting rod, and a piston. The crankshaft is arranged in the lower part of the crankcase. One end of the crankshaft is connected to the valve mechanism arranged on the crankcase. The other end of the crankshaft is connected to a flywheel. The flywheel is arranged on the outside of the crankcase and is connected to the generator. A piston is correspondingly arranged in each cylinder body, and the piston is connected to the crankshaft through a connecting rod.

7. The liquid nitrogen powered self-circulating power generation system according to claim 3, characterized in that: The valve mechanism includes a camshaft and a timing gear box. The camshaft is connected to the upper part of the crankcase. The camshaft is arranged parallel to the crankshaft at the lower part of the crankcase. One end of the camshaft is connected to a gear of the meshing gear set in the timing gear box. The other end of the camshaft is fixed to the inner wall of the crankcase through a bearing, and the other gear of the meshing gear set is connected to one end of the crankshaft. Under the rotation of the crankshaft, the meshing gear set drives the camshaft to operate, and the operation of the camshaft is used to control the opening and closing of the intake valve and the exhaust valve.

8. The liquid nitrogen powered self-circulating power generation system according to claim 3, characterized in that: An oil pump is arranged beside the crankshaft in the crankcase, an oil extraction port of the oil pump is connected to the oil pan through a pipeline, an oil outlet port of the oil pump is connected to an oil filter through a pipeline, and the oil filters are symmetrically installed on both sides outside the crankcase.

9. The liquid nitrogen powered self-circulating power generation system according to claim 1, characterized in that: The vaporizer adopts an air-temperature low-temperature liquid vaporizer.

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