High-speed train tunnel pressure wave energy storage and energy supply system and method

Abstract

The invention discloses a high-speed train tunnel pressure wave energy storage and energy supply system and method. When a train runs into a tunnel at a high speed, air compression waves in front of a train head and air expansion waves behind a train tail are formed. The compressed air energy storage device is used for capturing and storing generated pressure waves; the compressed air energy storage device comprises a primary buffer cavity, and the primary buffer cavity communicates with the storage cavity; a one-way air valve is arranged at an inlet of the primary buffer cavity; a storage cavity of the compressed air energy storage device is connected with the expansion machine, and the expansion machine is connected with the generator; heat energy generated in the pressure wave compression process is stored through the heat energy storage device; the expansion machine is connected with the cold energy storage device, and when energy is released through the expansion machine, generated cold energy is stored through the cold energy storage device. Pressure waves generated when a train passes are used as an energy source, efficient capture, conversion and storage of energy are achieved, dependence on traditional energy is reduced, and carbon emission is reduced.

Description

Technical Field

[0001] The present invention belongs to the cross - technical field of high - speed railways and energy technologies, and particularly relates to a high - speed train tunnel pressure wave energy storage and energy supply system and method. Background Art

[0002] In the operation practice of high - speed railways, when a train enters a tunnel at high speed, an air compression wave is formed in front of the train head and an air expansion wave is generated behind the train tail. These pressure waves propagate rapidly along the tunnel and undergo complex reflection and energy conversion processes at the tunnel exit. Such pressure waves are regarded as potential threats to the tunnel structure and the running stability of the train. Usually, the solutions are as follows: 1. It is necessary to build a horizontal guide leading to the ground beside the tunnel to export the pressure wave and reduce the impact in the tunnel; 2. Adjust the shape of the tunnel entrance to reduce the impact; 3. Adjust the internal structure of the tunnel so that the cross - sectional area near the entrance is larger than that in the middle section to reduce the impact. However, with the progress of energy science and technology, exploring its potential as a renewable energy source has become a new research direction. Summary of the Invention

[0003] In order to make up for the deficiencies of the prior art, the present invention provides a high - speed train tunnel pressure wave energy storage and energy supply system and method, which can capture, store, and effectively utilize the pressure wave energy generated when the train passes through, and promote the development of high - speed railway operation towards a more green and low - carbon direction.

[0004] In order to achieve the above - mentioned purpose, the technical solution adopted by the present invention is as follows:

[0005] A high - speed train tunnel pressure wave energy storage and energy supply system, characterized in that:

[0006] It includes a wind turbine power generation device, a compressed air energy storage device, an intelligent control system, and an auxiliary power supply system;

[0007] The compressed air energy storage device is used to capture and store the generated pressure wave;

[0008] The compressed air energy storage device includes a primary buffer chamber, and the primary buffer chamber is communicated with a storage chamber;

[0009] A one - way air valve is arranged at the entrance of the primary buffer chamber; a compressor is also arranged on the primary buffer chamber; the electric energy generated by the wind turbine power generation device compresses the pressure wave captured by the compressed air energy storage device through a motor and the compressor;

[0010] The storage chamber of the compressed air energy storage device is connected to an expander, and the expander is connected to a generator; the heat energy generated during the pressure wave compression process is stored through a heat energy storage device; the expander is connected to a cold energy storage device, and when the expander releases energy, the generated cold energy is stored through the cold energy storage device.

[0011] Furthermore, the thermal energy generated during the pressure wave compression process is stored by the thermal energy storage device.

[0012] Furthermore, the compressor adopts 6-stage piston progressive compression.

[0013] Furthermore, a pressure sensor is provided on the primary buffer chamber.

[0014] Furthermore, the expander is connected to the cold energy storage device.

[0015] Furthermore, a photovoltaic power generation device is provided at the top of the tunnel entrance, and the photovoltaic power generation device is connected to the auxiliary power supply system.

[0016] Furthermore, the wind turbine power generation device is provided on the tunnel entrance and the tunnel wall.

[0017] A method for energy storage and energy supply of pressure waves in a high-speed train tunnel, characterized in that:

[0018] When the train enters and exits the tunnel, the generated compression wave and expansion wave can drive the wind turbine to generate a small amount of electricity, and this part of the electricity is used to assist the train wave compression and release;

[0019] When the train passes through the tunnel, the generated pressure wave causes the one-way air valve at the entrance of the primary buffer chamber to open, and the pressure wave enters the primary buffer chamber; when the train passes through and the external pressure wave disappears, the one-way air valve quickly closes;

[0020] The pressure sensor provided on the primary buffer chamber monitors the pressure value of the pressure wave in real time and transmits it to the intelligent control system; when the pressure value is lower than the set value, the intelligent control system controls the compressor to start and compress the captured pressure wave; the compressed pressure wave is stored in the storage chamber of the compressed air energy storage device;

[0021] The electric energy generated by the wind turbine power generation device provides power for the compressor through the motor;

[0022] The thermal energy generated during the pressure wave compression process is stored by the thermal energy storage device; when the high-speed train tunnel is a plateau alpine tunnel, the stored thermal energy provides heat through the heating device; the generated thermal energy can also be converted into other forms of energy;

[0023] When needed, the pressure wave stored in the compressed air energy storage device expands and does work through the expander and the generator to generate electricity;

[0024] When the energy is released through the expander, cold energy is generated during the expansion of the high-pressure air, and the cold energy is stored by the cold energy storage device; when the high-speed train tunnel is a high-temperature tunnel, the stored cold energy is used for tunnel cooling through the cooling device; the generated cold energy can also be converted into other forms of energy;

[0025] The auxiliary power supply system provides energy for the compressor, expander, heating device, and cooling device through a photovoltaic power generation device and an external power supply.

[0026] Advantages of the present invention:

[0027] 1) The present invention makes full use of the pressure wave generated when the train passes by as an energy source. By optimizing the system design and operation strategy, it realizes the efficient capture, conversion, and storage of energy, improves the overall energy efficiency, reduces the dependence on traditional energy sources, and reduces carbon emissions.

[0028] 2) The system construction and operation costs of the present invention are relatively low, and it has the ability of long-term and stable energy supply, with high economic and social benefits.

[0029] 3) The present invention can reduce the structural modifications such as tunnel openings and parallel adits required to weaken the compression wave in the traditional way, and reduce the earthwork. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1 It is a schematic structural diagram of the system of the present invention;

[0031] Figure 2 It is a working flow chart of the system of the present invention;

[0032] Figure 3 It is a schematic connection diagram of the system of the present invention. DETAILED DESCRIPTION OF THE INVENTION

[0033] The present invention will be described in detail below in conjunction with the specific embodiments.

[0034] The present invention utilizes the existing inclined shafts, air chambers and other spaces in the tunnel or newly constructs a small part of the space to capture and store the compression wave and expansion wave generated when the high-speed train passes through the tunnel, and converts them into electric energy or heat energy to support the energy needs of infrastructure such as lighting and warming in the tunnel, and at the same time achieves the purpose of saving engineering, promoting the operation of high-speed railways towards a more green and low-carbon direction.

[0035] As Figure 1 , 3 shown, the high-speed train tunnel pressure wave energy storage and energy supply system of the present invention includes a wind turbine power generation device, a compressed air energy storage device, an intelligent control system, and an auxiliary power supply system. The wind turbine power generation device is arranged on the tunnel entrance and the tunnel wall.

[0036] The compressed air energy storage device is used to capture and store the generated pressure wave; the compressed air energy storage device can be deployed at reasonable positions inside the tunnel, including but not limited to existing or newly built chambers, vertical shafts, inclined shafts, etc.

[0037] The compressed air energy storage device includes a primary buffer chamber, which is connected to the storage chamber; a one-way air valve is provided at the inlet of the primary buffer chamber, and a compressor and a pressure sensor are also provided on the primary buffer chamber. The compressor adopts 6-stage piston progressive compression; the electric energy generated by the wind turbine power generation device compresses the pressure wave captured by the compressed air energy storage device through the motor and the compressor;

[0038] The storage chamber of the compressed air energy storage device is connected to the expander, and the expander is connected to the generator; the heat energy generated during the pressure wave compression process is stored through the heat energy storage device; the expander is connected to the cold energy storage device, and when the expander releases energy, the generated cold energy is stored through the cold energy storage device.

[0039] A photovoltaic power generation device is arranged at the top of the tunnel entrance, and the photovoltaic power generation device is connected to the auxiliary power supply system.

[0040] The intelligent control system includes a main control PLC and an operation terminal, which is the overall control center, coordinating the operation of each device and processing data; the intelligent control system is responsible for integrating high-precision sensors, data analysis and processing algorithms to realize the intelligent operation of the system; at the same time, it takes into account the role of intelligent energy management to ensure the stable storage and supply of energy as needed.

[0041] The present invention also provides a method for high-speed train tunnel pressure wave energy storage and energy supply, as Figure 2 shown, specifically:

[0042] When the train enters and exits the tunnel, the generated compression wave and expansion wave can drive the wind blades to generate a small amount of electricity, and this part of the electricity is used to assist the train wave compression and release;

[0043] When the train passes through the tunnel, the generated pressure wave causes the one-way air valve at the inlet of the primary buffer chamber to open, and the pressure wave enters the primary buffer chamber; when the train passes through and the external pressure wave disappears, the one-way air valve quickly closes. The one-way air valve can only open unidirectionally, and the air that has entered will not leak;

[0044] The pressure sensor provided on the primary buffer chamber real-time monitors the pressure value of the pressure wave and transmits it to the intelligent control system; when the pressure value is lower than the set value, the intelligent control system controls the compressor to start and compress the captured pressure wave; the compressed pressure wave is stored in the storage chamber of the compressed air energy storage device;

[0045] The electric energy generated by the wind turbine power generation device provides power for the compressor through the motor;

[0046] The heat energy generated during the pressure wave compression process is stored through the heat energy storage device; when the high-speed train tunnel is a plateau and alpine tunnel, the stored heat energy provides heat energy through the heating device to solve the freezing damage problem of the tunnel; the generated heat energy can also be converted into other forms of energy;

[0047] When there is an electricity demand, the pressure wave stored in the compressed air energy storage device passes through the expander and the generator, and expands to do work to generate electricity. When the power is insufficient, it is used for ventilation, lighting, heating, etc. in the tunnel.

[0048] When the energy is released through the expander, cold energy will be generated during the expansion of the high-pressure air, and the cold energy is stored through the cold energy storage device. When the high-speed train tunnel is a high-temperature tunnel, the stored cold energy is used for tunnel cooling through the cooling device. The generated cold energy can also be converted into other forms of energy.

[0049] The auxiliary power supply system provides energy for the compressor, expander, heating device, and cooling device through the photovoltaic power generation device and the external power supply.

[0050] In the description of the present invention, unless otherwise clearly specified and limited, the terms "set", "installed", "connected", "connected", "fixed" shall be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or integrated; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the internal communication of two components or the interaction relationship between two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific situations.

[0051] The content of the present invention is not limited to the examples listed. Any equivalent transformation of the technical solution of the present invention by those of ordinary skill in the art by reading the specification of the present invention is covered by the claims of the present invention.

Claims

1. A high-speed train tunnel pressure wave energy storage and energy supply system, characterized in that: It includes a wind turbine power generation device, a compressed air energy storage device, an intelligent control system, and an auxiliary power supply system; The compressed air energy storage device is used to capture and store the generated pressure wave; The compressed air energy storage device includes a primary buffer chamber, and the primary buffer chamber is communicated with a storage chamber; A one-way air valve is arranged at the inlet of the primary buffer chamber; a compressor is also arranged on the primary buffer chamber; the electric energy generated by the wind turbine power generation device compresses the pressure wave captured by the compressed air energy storage device through a motor and the compressor; The storage chamber of the compressed air energy storage device is connected to an expander, and the expander is connected to a generator; the heat energy generated during the pressure wave compression process is stored through a heat energy storage device; the expander is connected to a cold energy storage device, and when the expander releases energy, the generated cold energy is stored through the cold energy storage device.

2. The energy storage and energy supply system for tunnel pressure waves of a high-speed train according to claim 1, characterized in that: The heat energy generated during the pressure wave compression process is stored through a heat energy storage device.

3. A high-speed train tunnel pressure wave energy storage and energy supply system according to claim 2, characterized in that: The compressor adopts 6-stage piston progressive compression.

4. A high-speed train tunnel pressure wave energy storage and energy supply system according to claim 3, characterized in that: A pressure sensor is arranged on the primary buffer chamber.

5. A high-speed train tunnel pressure wave energy storage and energy supply system according to claim 4, characterized in that: The expander is connected to a cold energy storage device.

6. The energy storage and energy supply system for tunnel pressure wave of high-speed train according to claim 5, characterized in that: A photovoltaic power generation device is arranged on the top of the tunnel entrance, and the photovoltaic power generation device is connected to the auxiliary power supply system.

7. A high-speed train tunnel pressure wave energy storage and energy supply system according to claim 6, characterized in that: The wind turbine power generation device is arranged on the tunnel entrance and the tunnel wall.

8. A high-speed train tunnel pressure wave energy storage and energy supply method, characterized in that: When the train enters and exits the tunnel, the generated compression wave and expansion wave can drive the wind turbine to generate a small amount of electricity, and this part of the electricity is used to assist the train wave compression and release; When the train passes through the tunnel, the generated pressure wave causes the one-way air valve at the inlet of the primary buffer chamber to open, and the pressure wave enters the primary buffer chamber; when the train passes through and the external pressure wave disappears, the one-way air valve quickly closes; The pressure sensor arranged on the primary buffer chamber real-time monitors the pressure value of the pressure wave and transmits it to the intelligent control system; when the pressure value is lower than the set value, the intelligent control system controls the compressor to start and compress the captured pressure wave; The compressed pressure wave is stored in the storage chamber of the compressed air energy storage device; The electric energy generated by the wind turbine power generation device provides power for the compressor through a motor; The heat energy generated during the pressure wave compression process is stored through a heat energy storage device; when the high-speed train tunnel is a plateau alpine tunnel, the stored heat energy provides heat energy through a heating device; the generated heat energy can also be converted into other forms of energy; When needed, the pressure wave stored in the compressed air energy storage device expands and does work through an expander and a generator to generate electricity; When the expander releases energy, cold energy will be generated during the expansion of the high-pressure air, and the cold energy is stored through the cold energy storage device; when the high-speed train tunnel is a high-temperature tunnel, the stored cold energy is used for tunnel cooling through a cooling device; the generated cold energy can also be converted into other forms of energy; The auxiliary power supply system provides energy for the compressor, expander, heating device, and cooling device through the photovoltaic power generation device and an external power supply.

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