CN215850716U - Hybrid power system based on LNG cryogenic working medium and superconducting energy storage - Google Patents
Hybrid power system based on LNG cryogenic working medium and superconducting energy storage Download PDFInfo
- Publication number
- CN215850716U CN215850716U CN202121474068.5U CN202121474068U CN215850716U CN 215850716 U CN215850716 U CN 215850716U CN 202121474068 U CN202121474068 U CN 202121474068U CN 215850716 U CN215850716 U CN 215850716U
- Authority
- CN
- China
- Prior art keywords
- energy storage
- lng
- superconducting
- working medium
- storage device
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/60—Other road transportation technologies with climate change mitigation effect
- Y02T10/62—Hybrid vehicles
Landscapes
- Filling Or Discharging Of Gas Storage Vessels (AREA)
Abstract
The utility model discloses a hybrid power system based on LNG cryogenic working medium and superconducting energy storage, which mainly comprises a superconducting energy storage device (SMES), the LNG cryogenic working medium, a motor, an internal combustion engine and other structures, wherein the SMES is a device which directly stores electromagnetic energy by utilizing the zero resistance characteristic of a superconductor and returns the electromagnetic energy to a load when needed. The innovation points of the utility model are mainly as follows: on one hand, the cold energy of the LNG cryogenic working medium is used for replacing the traditional liquid nitrogen cooling medium to provide a low-temperature working environment for the SMES; on the other hand, when the SMES power is insufficient, the internal combustion engine in the system can be operated by utilizing the high-heat-value characteristic of the LNG, and the cruising ability is improved. Therefore, the hybrid power system is energy-saving and environment-friendly, fully utilizes the advantages of high power density, good conversion efficiency, small loss, quick response and the like of SMES, and also efficiently utilizes the cold energy of the LNG cryogenic working medium and the high heat value during combustion. The system provides an economical and efficient hybrid power scheme for power equipment such as automobiles and ships.
Description
Technical Field
The utility model relates to the technical field of superconducting energy storage, in particular to the field of LNG application.
Background
In the modern society, with the continuous development of science and technology, the development of the electric automobile industry is also changing day by day, but the electric automobile still has the problems of imperfect charging equipment, high battery cost, insufficient endurance mileage and the like at present. Meanwhile, in the aspect of freight trucks, the traditional LNG fuel vehicles are increasingly popularized, but problems such as insufficient construction, unbalanced distribution, inconvenient gas filling, waste of a large amount of LNG cold energy and the like of an LNG gas station exist.
Therefore, in combination with a high-tech technology, namely superconducting energy storage technology, which is rapidly developed in recent years, we consider designing a more efficient power system. The superconducting energy storage technology has the characteristics of high reaction speed and high conversion efficiency, but the conventional superconducting energy storage device needs liquid nitrogen to provide a normal working environment, so that the large-scale application of the superconducting energy storage device is limited. Because LNG has the characteristics of a large amount of cold energy and high heat value, LNG can be used for replacing liquid nitrogen to provide a large amount of cold energy for the superconducting energy storage device, so a hybrid power system idea combining cryogenic working medium based on LNG and the superconducting energy storage device is proposed. The hybrid power system is energy-saving and environment-friendly, fully utilizes the advantages of high power density, good conversion efficiency, small loss, quick response and the like of SMES, and also efficiently utilizes the cold energy of the LNG cryogenic working medium and the high heat value characteristic during combustion. The system provides an economical and efficient hybrid power scheme for power equipment such as automobiles and ships.
SUMMERY OF THE UTILITY MODEL
The utility model aims to provide a low-temperature working environment for SMES by using cold energy of LNG cryogenic working medium to replace the traditional liquid nitrogen cooling medium; on the other hand, when the SMES electric power is insufficient, the internal combustion engine in the hybrid power system can work by utilizing the high-heat-value characteristic of the LNG, the power is continuously output, and the cruising ability is improved.
In order to realize the purpose of the utility model, the utility model provides the following technical scheme:
a hybrid power system based on LNG cryogenic working medium and superconducting energy storage comprises:
a dewar for storing LNG (liquefied natural gas) and a superconducting energy storage device;
the superconducting energy storage device is arranged in the Dewar flask and used for storing electromagnetic energy, two ends of the superconducting energy storage device are respectively connected with a cable terminal, and the two cable terminals are respectively connected with an external connector of the Dewar flask and used for charging and supplying power;
and the LNG vaporizer pipeline is arranged at the bottom side of the Dewar flask and is used for delivering the vaporized natural gas LNG to the internal combustion engine.
The joint part of the Dewar flask cable is connected with an ammeter in series, and two ends of the Dewar flask cable are also connected with a voltmeter to display the current and the voltage on the state sensor.
A liquid level sensor is arranged in the Dewar flask, and is used for monitoring the liquid level of the liquefied natural gas in the container and transmitting the liquid level to a state monitoring system.
And the intermediate energy conversion device comprises an inverter and a transformer, wherein the output of the inverter is connected to the transformer to perform transformation operation. The intermediate energy conversion device has the advantages of mature conversion technology, low cost, stable and reliable inverter and transformer, high power factor and transmission efficiency, high efficiency-cost ratio and excellent performance.
The inverter is used for carrying out operations such as inversion on the energy stored in the superconducting energy storage device, ensuring the stable and continuous output of the energy of the superconducting energy storage device and is connected with an external power supply connector of the superconducting energy storage device.
And the transformer is used for converting the current, the voltage and the impedance of the alternating current, and is convenient for supplying power to a motor of a power supply system.
And a voltage, current and power detection meter is arranged in the intermediate energy conversion device and used for detecting the voltage, the current and the power in the energy conversion process and uploading data to a state monitoring system.
Preferably, a Bi-based high-temperature superconducting material (with a superconducting transition temperature of about 115K) is selected to wind the superconducting energy storage magnet.
Preferably, a liquid level sensor is arranged in the Dewar flask.
Preferably, a flow meter is arranged on the gasifier pipeline and used for measuring the gas flow of the system.
Preferably, the superconducting energy storage power and LNG dual-power driving system further comprises a measurement control device, wherein the measurement control device comprises a measurement control assembly which is integrated with other components and is used for acquiring parameters such as current, voltage, temperature, pressure and flow of key components.
In summary, due to the adoption of the technical scheme, the utility model has the beneficial effects that:
according to the hybrid power system based on the LNG cryogenic working medium and the superconducting energy storage, in the system, the LNG can provide cold energy for the superconducting energy storage device, the superconducting energy storage device SMES is assembled into the LNG cryogenic working medium, the cold energy utilization efficiency of the LNG can be improved, energy is saved, environment is protected, when the energy storage system is insufficient in power supply, the LNG serves as fuel to be output, the whole system is energy-saving and environment-friendly, the LNG is applied to the superconducting system, and the energy of the LNG is fully utilized. The cold energy utilization efficiency of LNG can be improved, and the LNG cold energy recovery system is energy-saving and environment-friendly.
Drawings
FIG. 1 is a schematic structural diagram of a hybrid power system based on LNG cryogenic working medium and superconducting energy storage according to the present invention;
the labels in the figure are: 1-Dewar flask, 2-inverter, 3-transformer, 4-motor, 5-state detection and control system, 6-internal combustion engine, 7-gasifier pipeline, 8-superconducting energy storage device, 9-gasifier, 10-gas safety valve, 11-pipeline.
Detailed Description
The present invention will be described in further detail with reference to test examples and specific embodiments. It should be understood that the scope of the above-described subject matter is not limited to the following examples, and any techniques implemented based on the disclosure of the present invention are within the scope of the present invention.
Examples
As shown in fig. 1, the hybrid power system based on LNG cryogenic working medium and superconducting energy storage according to the present invention includes:
bi-series high-temperature superconducting materials (the superconducting transition temperature is about 115K) are selected to be wound around the superconducting energy storage magnet.
The Dewar flask 1 is used for placing a superconducting energy storage device and LNG, the liquid level of the Dewar flask 1 is ensured to be within a safety range during charging, then the external charging device is used for charging, and the current is ensured to be below superconducting critical current. The energy of the superconducting energy storage device in the automobile starting and running 1 is converted into alternating current through the inverter 2 and then converted into electric energy required by the motor 4 through the transformer 3;
when the electric power is insufficient, the gasifier works to convey the LNG liquid to the internal combustion engine to provide power for the automobile.
In order to ensure that the system does not quench, the LNG liquid level is higher than the superconducting energy storage device.
When the system is stopped, LNG is slowly gasified, the monitoring system detects the air pressure in the Dewar flask 1, and when the air pressure is higher than the safe air pressure, the gas safety valve releases the pressure outwards.
By using the hybrid power system based on the LNG cryogenic working medium and the superconducting energy storage, the LNG automobile is low in energy consumption and mature in process, and the cooling capacity can be provided for the superconducting energy storage device, so that the cold energy utilization efficiency of the LNG can be improved by arranging the superconducting energy storage device (SMES) in the Dewar flask, and when the energy of the energy storage system is sufficient, the energy storage system supplies power to the LNG automobile, so that the hybrid power system is energy-saving and environment-friendly, and the two systems work simultaneously under the condition of large load and have high power. When the power supply of the energy storage system is insufficient, LNG is used as fuel to be output, a small amount of gasified natural gas is conveyed to the internal combustion engine through a pipeline connected with the safety valve to be combusted in the running process of the automobile, and the energy loss is low. The superconducting energy storage device is assembled in the Dewar flask 1, cold energy of LNG is fully utilized, and the superconducting energy storage and the motor are added in an LNG automobile system in the whole system structure, so that the system is energy-saving and environment-friendly, high in efficiency-cost ratio and excellent in performance.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the utility model, and any modifications, equivalents and improvements made within the spirit and principle of the present invention are intended to be included within the scope of the present invention.
Claims (8)
1. A hybrid power system based on LNG cryogenic working medium and superconducting energy storage is characterized by comprising:
the Dewar flask (1) is used for assembling the superconducting energy storage device (8) and LNG cryogenic working medium;
the inverter (2) is used for converting the energy of the superconducting energy storage device (8) in the Dewar flask (1) into alternating current in normal operation, ensuring the stable output of the energy of the superconducting energy storage device (8), and converting the energy into electric energy required by the motor (4) through the transformer (3);
a condition monitoring system (5) for monitoring the liquid level in the dewar (1), the current voltage of the coil, the operating condition of the inverter (2), the operating condition of the motor (4), the flow rate during LNG transfer, and the residual condition in the vaporizer pipe (7), monitoring the operating condition of the feedback internal combustion engine;
an internal combustion engine (6), wherein when LNG is used for providing power, natural gas flows to the internal combustion engine (6) through the gasifier pipeline (7) to provide fuel for the internal combustion engine (6), and the internal combustion engine (6) is used for combustion and power supply;
a vaporizer (9) for vaporizing the LNG in the dewar (1) to natural gas and delivering the natural gas to the internal combustion engine;
when the gas safety valve (10) is started, the gasified gas of the LNG is conveyed to the internal combustion engine through a pipeline (11) to be combusted, and when the pressure value in the tank is larger than a set safety threshold value, automatic pressure relief is carried out.
2. The hybrid power system based on LNG cryogenic working medium and superconducting energy storage according to claim 1, characterized in that the liquid providing cooling energy for the superconducting energy storage device (8) is LNG; the LNG can be used as a fuel of the internal combustion engine (6) in the hybrid power system, and can also provide cold energy for the superconducting energy storage device (8); the hybrid power system efficiently utilizes the cold energy of the LNG cryogenic working medium and the high heat value characteristic during combustion.
3. The hybrid power system based on LNG cryogenic working medium and superconducting energy storage according to claim 1, characterized in that the superconducting energy storage device (8) is a superconducting coil capable of entering a superconducting state in an LNG temperature range, and the superconducting energy storage device (8) is charged by an external charging device under the condition that sufficient LNG is in the tank to enable the superconducting coil to enter the superconducting state.
4. The hybrid power system based on LNG cryogenic working medium and superconducting energy storage according to claim 1, characterized in that a quench protection device is arranged in the superconducting energy storage device (8) to ensure safe operation of the superconducting energy storage device (8) and the whole system.
5. The hybrid power system based on LNG cryogenic working medium and superconducting energy storage according to claim 1, characterized in that a superconducting energy storage device (8), a liquid level sensor and a current and voltage sensor are arranged in the Dewar flask (1).
6. The hybrid power system based on LNG cryogenic working medium and superconducting energy storage is characterized in that a cable is connected to the upper end of the Dewar flask (1) to transmit electromagnetic energy in the superconducting energy storage device (8), the inverter (2) is adopted to convert direct current in the superconducting energy storage device (8) into alternating current, and the transformer (3) transmits the converted electric energy to the motor (4) to output power.
7. The hybrid power system based on LNG cryogenic working medium and superconducting energy storage according to claim 1, characterized in that a vaporizer (9) vaporizes LNG into natural gas; the superconducting energy storage device (8) is used as the first energy to be used, and the LNG is used as the later energy to be used; when the superconducting energy storage device (8) supplies power, if the load is high, the vaporizer (9) rapidly provides LNG in the Dewar flask (1) to the internal combustion engine (6) through the vaporizer pipeline (7), and the two systems operate simultaneously to provide power under the condition of large load.
8. The hybrid power system based on LNG cryogenic working medium and superconducting energy storage is characterized in that LNG gas is conveyed to the internal combustion engine (6) through the pipeline (11) to be combusted when the gas safety valve (10) is started, and automatic pressure relief can be carried out when the pressure value in the tank is larger than a set safety threshold value.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121474068.5U CN215850716U (en) | 2021-06-30 | 2021-06-30 | Hybrid power system based on LNG cryogenic working medium and superconducting energy storage |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121474068.5U CN215850716U (en) | 2021-06-30 | 2021-06-30 | Hybrid power system based on LNG cryogenic working medium and superconducting energy storage |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215850716U true CN215850716U (en) | 2022-02-18 |
Family
ID=80335616
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202121474068.5U Active CN215850716U (en) | 2021-06-30 | 2021-06-30 | Hybrid power system based on LNG cryogenic working medium and superconducting energy storage |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215850716U (en) |
-
2021
- 2021-06-30 CN CN202121474068.5U patent/CN215850716U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| Gurz et al. | The meeting of hydrogen and automotive: A review | |
| CN1123943C (en) | Fuel cell power supply system | |
| CN112259758B (en) | Zero-emission marine combined cooling heating and power unit and using method thereof | |
| CN109599576B (en) | Vehicle-mounted liquid hydrogen system and method with volatile hydrogen recovery function | |
| CN102848901B (en) | Customizable energy system and vehicle | |
| Fu et al. | Fuel cell and hydrogen in maritime application: A review on aspects of technology, cost and regulations | |
| KR102227466B1 (en) | System using cold energy | |
| CN113140752A (en) | Superconducting motor fuel cell power system using liquid hydrogen | |
| Appleby | Fuel cell technology and innovation | |
| Shi et al. | Literature review: Present state and future trends of air-powered vehicles | |
| CN101825075A (en) | Thermoelectric generation-based liquefied natural gas automobile cold energy recovery system | |
| CN113370775A (en) | Hybrid power system based on LNG cryogenic working medium and superconducting energy storage | |
| CN113140754A (en) | Fuel cell powered refrigerator car system utilizing liquid hydrogen cold energy | |
| CN114576548A (en) | Efficient liquid hydrogen fuel system | |
| CN215850716U (en) | Hybrid power system based on LNG cryogenic working medium and superconducting energy storage | |
| CN102868205A (en) | Electric vehicle and renewable energy complementary system | |
| CN112249292A (en) | Full electric propulsion system of liquid hydrogen high-temperature superconducting motor | |
| CN201758280U (en) | Novel type energy networking system | |
| Oman | Electric car progress | |
| JP2005086914A (en) | Electric vehicle provided with superconducting motor | |
| CN214778163U (en) | Container heat preservation system based on fuel cell | |
| CN114784858A (en) | Liquid hydrogen cooling offshore superconducting wind power hydrogen production system | |
| CN209097440U (en) | A kind of offshore renewable energy transport system based on liquid gas energy storage | |
| CN211618011U (en) | Novel wharf boat is annotated to LNG energy gas electricity | |
| CN108172879A (en) | It is a kind of that power generator is controlled based on the temperature of fuel cell and lithium battery |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |