Intelligent elevator efficient energy-saving system and method based on pressure vessel energy conversion

Abstract

The invention relates to an intelligent elevator efficient energy-saving system and method based on pressure vessel energy conversion. Comprising an elevator traction machine and a traction machine main shaft additionally arranged on the elevator traction machine, a first traction machine large wheel and a second traction machine large wheel are arranged at the two ends of the traction machine main shaft respectively, and the first traction machine large wheel is connected with a first small wheel on a first electromagnetic clutch through a first belt; the second traction machine large wheel is connected with a second small wheel on the second electromagnetic clutch through a second belt, and the first traction machine large wheel drives an air compression main machine to operate through a first belt and a first small wheel to generate compressed air. Compressed air is stored in an air storage tank through a first air pipeline and a first one-way electromagnetic valve arranged on the first air pipeline for air energy storage; the elevator has the advantages that cost is saved, elevator operation is stable and safe, and elevator energy consumption is obviously reduced.

Description

Technical Field

[0001] The present invention relates to the field of intelligent elevator energy-saving technology, and in particular to an intelligent elevator high-efficiency energy-saving system and method based on pressure vessel energy conversion. Background Art

[0002] By the end of 2023, the number of elevators in use in my country will reach 10.6298 million, and the average power consumption of each elevator is about 3,000 yuan per year. The current status of intelligent energy-saving technologies for elevators is as follows:

[0003] 1. Intelligent group control technology: Coordinate the operation of multiple elevators through a computer system, reasonably allocate tasks according to factors such as floors and time, reduce elevator idle running and waiting time, and reduce energy consumption. It is mainly suitable for multiple elevators to improve transportation efficiency and has significant energy-saving effects.

[0004] 2. Energy feedback technology: When the elevator is descending, the motor is in the power generation state. The energy feedback device converts the electrical energy into AC power and feeds it back to the grid or stores it for use by other equipment, thus realizing energy recovery and reuse.

[0005] 3. Permanent magnet synchronous gearless traction technology: It uses permanent magnet synchronous motor, does not require gear reduction device, has high transmission efficiency, low energy consumption, stable operation and low noise.

[0006] However, the above method has the following problems in terms of elevator energy saving technology:

[0007] 1. High technical cost: Currently, most of the intelligent energy-saving technology equipment and systems for elevators are expensive, with high installation and maintenance costs, complex structures, and low precision, which limits their widespread application.

[0008] 2. Compatibility issues: When renovating old elevators, the new energy-saving technology may be incompatible with the original equipment system, making the renovation difficult.

[0009] 3. Insufficient intelligence: Some so-called "intelligent" elevators have single functions and cannot fully adapt to complex and changing usage scenarios, and the energy-saving effect is limited. The energy storage of the elevator energy feedback device is limited, and it is difficult to connect to the power grid, making the technology difficult to promote and apply. Summary of the invention

[0010] The purpose of the present invention is to provide an intelligent elevator energy-saving system and method based on pressure vessel energy conversion to solve the problems raised in the above background technology.

[0011] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: an intelligent elevator high-efficiency energy-saving system based on pressure vessel energy conversion, comprising an elevator traction machine and a traction machine main shaft installed thereon, wherein a first traction machine large wheel and a second traction machine large wheel are respectively provided at both ends of the traction machine main shaft, the first traction machine large wheel is connected to a first small wheel on a first electromagnetic clutch through a first belt, and the second traction machine large wheel is connected to a second small wheel on a second electromagnetic clutch through a second belt, the first traction machine large wheel is driven by the first small wheel through the first belt to drive an air compressor main engine to operate to generate compressed air, the compressed air is stored in an air storage tank through a first air pipe and a first one-way solenoid valve arranged on the first air pipe for air energy storage, the compressed air in the air storage tank is driven by an air engine main engine to operate to generate power through a second air pipe and a second one-way solenoid valve arranged on the second air pipe to generate power, the power drives the second small wheel on the second electromagnetic clutch to operate, and then drives the second traction machine large wheel to operate through the second belt.

[0012] Preferably, the air compressor main unit is a screw air compressor main unit.

[0013] Preferably, the air engine main unit is a screw air engine main unit.

[0014] Preferably, a safety valve and a pressure gauge are provided on the top of the gas storage tank.

[0015] Preferably, an oil drain valve is provided at the bottom of the gas storage tank.

[0016] An efficient energy-saving method for intelligent elevators based on pressure vessel energy conversion, when the elevator car is descending, the first traction machine large wheel drives the air compressor main engine to operate through the first belt and the first small wheel to generate compressed air, and the compressed air is stored in the air storage tank through the first air pipe and the first one-way solenoid valve installed on the first air pipe, so that the potential energy of the elevator car when descending is converted into the potential energy of compressed air and stored in the air storage tank; when the elevator car is ascending, the compressed air in the air storage tank drives the air generator main engine to operate through the second air pipe and the second one-way solenoid valve to generate power, and drives the second small wheel on the second electromagnetic clutch to operate, and then drives the second traction machine large wheel to operate through the second belt, so that the compressed air potential energy in the air storage tank is converted into kinetic energy for lifting the elevator car.

[0017] The beneficial effects of the present invention are as follows: by utilizing the working principle of the one-way electromagnetic clutch that starts by transmitting power in the forward direction and stops by de-energizing in the reverse direction and the one-way conduction principle of the one-way electromagnetic valve, and utilizing the elevator's own transmission system, without changing the original equipment system, by installing an intelligent energy-saving equipment system on the main shaft of the elevator traction machine, the air compression system and the air starting system can be alternately operated in an on-off manner, and the overall equipment system can be accurately operated, and potential energy and kinetic energy can be efficiently converted, thereby reducing the power consumption of the original elevator operation system and achieving the purpose of energy saving; it has the advantages of saving costs, smooth and safe elevator operation, and significantly reduced elevator energy consumption. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the overall structure of the present invention.

[0019] In the figure: 1. elevator traction machine; 2. traction machine main shaft; 3. first traction machine large wheel; 4. second traction machine large wheel; 5. first belt; 6. first electromagnetic clutch; 7. first small wheel; 8. second belt; 9. second electromagnetic clutch; 10. second small wheel; 11. air compressor host; 12. first air pipeline; 13. first one-way solenoid valve; 14. air storage tank; 15. second air pipeline; 16. second one-way solenoid valve; 17. air engine host; 18. safety valve; 19. pressure gauge; 20. oil drain valve. DETAILED DESCRIPTION

[0020] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the accompanying drawings in the embodiments of the present invention.

[0021] The present invention provides a technical solution: Figure 1 As shown, in this embodiment, an intelligent elevator high-efficiency energy-saving system based on pressure vessel energy conversion includes an elevator traction machine 1 and a traction machine main shaft 2 installed thereon, and the two ends of the traction machine main shaft 2 are respectively provided with a first traction machine large wheel 3 and a second traction machine large wheel 4, the first traction machine large wheel 3 is connected to a first small wheel 7 on a first electromagnetic clutch 6 through a first belt 5, and the second traction machine large wheel 4 is connected to a second small wheel 10 on a second electromagnetic clutch 9 through a second belt 8, and the first traction machine large wheel 3 on the traction machine main shaft 2 drives the first small wheel 7 to drive the air The air compression main engine 11 operates to generate compressed air. At this time, the first electromagnetic clutch works, and the compressed air passes through the first air pipe 12 and the first one-way electromagnetic valve 13 arranged on the first air pipe 12 to store the air in the air tank 14 for air energy storage. The compressed air in the air tank 14 passes through the second air pipe 15 and the second one-way electromagnetic valve 16 arranged on the second air pipe 15 to drive the air engine main engine 17 to operate and generate power. This power drives the second small wheel 10 on the second electromagnetic clutch 9 to operate, and then drives the second traction machine large wheel 4 to operate through the second belt 8.

[0022] Furthermore, the air compressor main unit 11 is a screw air compressor main unit.

[0023] Furthermore, the air engine main unit 17 is a screw air engine main unit.

[0024] Furthermore, in order to increase safety, a safety valve 18 and a pressure gauge 19 are provided on the top of the gas storage tank 14 .

[0025] Furthermore, an oil drain valve 20 is provided at the bottom of the gas storage tank 14 .

[0026] An intelligent elevator high-efficiency energy-saving method based on pressure vessel energy conversion, when the elevator car is descending, the first traction machine large wheel 3 is driven by the first small wheel 7 through the first belt 5 to generate compressed air, and the compressed air is stored in the air storage tank 14 through the first air pipeline 12 and the first one-way solenoid valve 13 installed on the first air pipeline 12, so that the potential energy of the elevator car when descending is converted into the potential energy of compressed air and stored in the air storage tank 14; when the elevator car is ascending, the compressed air in the air storage tank 14 drives the air generator main machine 17 to operate through the second air pipeline 15 and the second one-way solenoid valve 16 to generate power, and drives the second small wheel 10 on the second electromagnetic clutch 9 to operate, and then drives the second traction machine large wheel 4 to operate through the second belt 8, so that the compressed air potential energy in the air storage tank 14 is converted into kinetic energy for lifting the elevator car.

[0027] The working principle of the present invention is as follows: utilizing the energy storage function of the pressure vessel gas tank, without changing the power system of the original equipment, an air compression transmission power system and an air start transmission power system are installed at both ends of the elevator traction machine main shaft. The air compression transmission power system is mainly composed of the traction machine main shaft 2, the first traction machine large wheel 3, the first belt 5, the first electromagnetic clutch 6, the air compression main machine 11, the first one-way electromagnetic valve 13 and the air tank 14. The air start transmission power system is mainly composed of the air tank 14, the second one-way electromagnetic valve 16, the air start main machine 17, the second electromagnetic clutch 9, the second belt 8, the second traction machine large wheel 4, and the traction machine main shaft 2. When the elevator car is going down, the air-generated transmission power system does not operate, and the air-compression transmission power system operates to generate compressed air, converting the gravitational potential energy of the heavy object into the compression potential energy of the compressed air and storing it in the air storage tank 14; when the elevator car is going up, the air-compression transmission power system does not operate, and the air-generated transmission power system operates to convert the air compression potential energy in the air storage tank 14 into the kinetic energy of the elevator car going up, and the elevator car is lifted to run upward. Through this kinetic energy and potential energy conversion method and system, the inertial braking of the elevator consumes more electrical energy for heating by resistors, and through the organic coordination of the intelligent control of the added equipment power system and the original elevator equipment power system, the entire equipment power system can run smoothly and safely, with significantly reduced energy consumption and obvious energy-saving effects.

[0028] The present invention ingeniously utilizes the electromagnetic clutch's forward power transmission to start and reverse power off to stop working principles and the one-way conduction principle of the air one-way electromagnetic valve, and realizes the start-and-stop alternating operation of the air compression host 11 and the air generator host 17 through intelligence, thereby achieving precise system operation and kinetic energy and potential energy conversion, thereby reducing the power consumption of the original elevator operation system and achieving energy saving. It has huge energy-saving space and positive energy-saving effects for the huge number of elevators in the country.

[0029] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An intelligent elevator high-efficiency energy-saving system based on pressure vessel energy conversion, comprising an elevator traction machine (1) and a traction machine main shaft (2) mounted thereon, characterized in that: A first traction machine large wheel (3) and a second traction machine large wheel (4) are respectively provided at both ends of the traction machine main shaft (2). The first traction machine large wheel (3) is connected to a first small wheel (7) on a first electromagnetic clutch (6) through a first belt (5), and the second traction machine large wheel (4) is connected to a second small wheel (10) on a second electromagnetic clutch (9) through a second belt (8). The first small wheel (7) drives an air compressor main engine (11) to operate to generate compressed air. The compressed air passes through a first air pipeline (12) and a first one-way electromagnetic valve (13) arranged on the first air pipeline (12) to store air in an air storage tank (14) for air energy storage. The compressed air in the air storage tank (14) passes through a second air pipeline (15) and a second one-way electromagnetic valve (16) arranged on the second air pipeline (15) to drive an air generator main engine (17) to operate to generate power, drive the second small wheel (10) on the second electromagnetic clutch (9) to operate, and then drive the second traction machine large wheel (4) to operate through the second belt (8).

2. The intelligent elevator high-efficiency energy-saving system based on pressure vessel energy conversion according to claim 1 is characterized in that: The air compressor main unit (11) is a screw air compressor main unit.

3. The intelligent elevator high-efficiency energy-saving system based on pressure vessel energy conversion according to claim 1 is characterized in that: The air engine main unit (17) is a screw air engine main unit.

4. The intelligent elevator high-efficiency energy-saving system based on pressure vessel energy conversion according to claim 1 is characterized in that: The top of the gas storage tank (14) is provided with a safety valve (18) and a pressure gauge (19).

5. The intelligent elevator high-efficiency energy-saving system based on pressure vessel energy conversion according to claim 1 is characterized in that: The bottom of the gas storage tank (14) is provided with an oil drain valve (20).

6. The intelligent elevator high-efficiency energy-saving method based on pressure vessel energy conversion according to claim 1 is characterized in that: When the elevator car moves downward, the first traction machine large wheel (3) is driven by the first small wheel (7) through the first belt (5) to generate compressed air. The compressed air is stored in the air storage tank (14) through the first air pipeline (12) and the first one-way electromagnetic valve (13) installed on the first air pipeline (12), so that the potential energy of the elevator car when moving downward is converted into the potential energy of the compressed air and stored in the air storage tank (14); when the elevator car moves upward, the compressed air in the air storage tank (14) drives the air generator main machine (17) to operate to generate power, drives the second small wheel (10) on the second electromagnetic clutch (9) to operate, and then drives the second traction machine large wheel (4) to operate through the second belt (8), so that the compressed air potential energy in the air storage tank (14) is converted into kinetic energy for lifting the elevator car upward.

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