Thermal management system for liquid hydrogen station

Abstract

The utility model relates to the technical field of liquid hydrogen stations, in particular to a heat management system for a liquid hydrogen station. Comprising a water bath gasifier, an inlet of the water bath gasifier is connected with a liquid hydrogen booster pump, an outlet of the water bath gasifier is connected with a hydrogen storage bottle set through a gasification pipeline, a heat exchange coil pipe is arranged on the gasification pipeline, an oil cooling exchanger is arranged outside the heat exchange coil pipe, and the oil cooling exchanger is connected with a hydraulic system through a hydraulic pipeline. A three-way valve is arranged on the gasification pipeline between the oil cooling exchanger and the water bath gasifier, the three-way valve is connected with the hydrogen storage bottle group through a conveying pipeline, and the water bath gasifier, the three-way valve and the hydraulic system are respectively connected with the station control system. Heat of the hydraulic system can be transmitted to the gasification pipeline through the oil cooling exchanger and used for gasifying the liquid hydrogen, electric energy consumption of the water bath gasifier is reduced, the low-temperature liquid hydrogen can dissipate heat of the hydraulic system, energy consumption caused by the fact that the hydraulic system needs to be additionally arranged for heat dissipation is avoided, and the purposes of saving energy and reducing consumption are achieved.

Description

Technical field:

[0001] The utility model relates to the technical field of liquid hydrogen stations, in particular to a thermal management system for liquid hydrogen stations. Background technology:

[0002] At present, during the high-pressure transportation of liquid hydrogen to the vaporizer, the booster pump outlet transports liquid hydrogen to the outside in the form of ultra-low temperature -253°C, and process insulation should be carried out. During the gasification process of the vaporizer, the temperature needs to be increased to ensure the gasification effect of the liquid hydrogen. In order to ensure the gasification effect, it is necessary to electrically heat the liquid during the gasification process and exchange heat with the low-temperature liquid hydrogen, which is the working principle of a conventional electric heating water bath vaporizer. This process not only consumes electrical energy, but also the efficiency loss of converting electrical energy into heat energy can reach about 10%, which means that the loss of electrical energy will be aggravated.

[0003] The hydraulic system used in the liquid-driven booster pump and related auxiliary facilities commonly used in liquid hydrogen stations needs to maintain good heat dissipation in actual use to ensure the normal and long-life operation of the system. The hydraulic system requires additional heat dissipation, and usually requires the use of chillers, cooling towers and other heat exchange forms for heat exchange and heat dissipation. This undoubtedly increases the consumption of electricity and water and the investment in equipment and facilities to a certain extent.

[0004] Therefore, the problem of how to exchange the energy of the hydraulic system with the vaporizer in a liquid hydrogen station has become a technical problem that urgently needs to be solved in the industry. Utility model content:

[0005] In order to make up for the deficiencies of the prior art, the utility model provides a thermal management system for a liquid hydrogen station, which solves the problem of excessive power consumption during heat exchange between a vaporizer and low-temperature liquid hydrogen in the previous liquid hydrogen station, and solves the problem of energy consumption caused by the need for additional heat dissipation for the hydraulic system in the previous liquid hydrogen station.

[0006] The technical solution adopted by the utility model to solve the above technical problems is:

[0007] A thermal management system for a liquid hydrogen station comprises a water bath vaporizer, wherein the inlet of the water bath vaporizer is connected to a liquid hydrogen booster pump, the outlet of the water bath vaporizer is connected to a hydrogen storage bottle group through a vaporization pipeline, a heat exchange coil is arranged on the vaporization pipeline, an oil cooling exchanger is arranged outside the heat exchange coil, the oil cooling exchanger is connected to a hydraulic system through a hydraulic pipeline, a three-way valve is arranged on the vaporization pipeline between the oil cooling exchanger and the water bath vaporizer, the three-way valve is connected to the hydrogen storage bottle group through a delivery pipeline, and the water bath vaporizer, the three-way valve and the hydraulic system are respectively connected to a station control system.

[0008] A temperature sensor is installed in the oil cooling exchanger, and the temperature sensor is connected to the station control system.

[0009] A hydrogen leakage sensor is installed in the oil cooling exchanger, and the hydrogen leakage sensor is connected to the station control system.

[0010] The oil cooling exchanger contains hydraulic oil.

[0011] The hydraulic system is a hydraulic system of a liquid hydrogen booster pump.

[0012] The oil cooling exchanger is connected to the auxiliary heating system via an auxiliary heating pipeline, and the auxiliary heating system is connected to the station control system.

[0013] The auxiliary heating system is a solar energy or electric heating or a combination of solar energy and electric heating.

[0014] The utility model adopts the above scheme and has the following advantages:

[0015] By setting an oil cooling exchanger on the gasification pipeline at the outlet of the water bath gasifier, the oil cooling exchanger is connected to the hydraulic system through the hydraulic pipeline, and the heat of the hydraulic system can be transferred to the gasification pipeline through the oil cooling exchanger to gasify the liquid hydrogen, reducing the power consumption of the water bath gasifier, and the low-temperature liquid hydrogen can dissipate the heat of the hydraulic system, avoiding the energy consumption caused by the additional heat dissipation of the hydraulic system, realizing the heat exchange between the hydraulic system and the water bath gasifier in the liquid hydrogen station, and achieving the purpose of energy saving and consumption reduction. In addition, an auxiliary heating system is also set up, and the heat of the auxiliary heating system can be transferred to the gasification pipeline through the oil cooling heat exchanger to increase the gasification effect. Description of the drawings:

[0016] Figure 1 It is a structural schematic diagram of the utility model.

[0017] In the figure, 1. water bath vaporizer, 2. vaporization pipeline, 3. hydrogen storage bottle group, 4. heat exchange coil, 5. oil cooling exchanger, 6. hydraulic pipeline, 7. hydraulic system, 8. three-way valve, 9. transportation pipeline, 10. station control system, 11. temperature sensor, 12. hydrogen leakage sensor, 13. auxiliary heating pipeline, 14. auxiliary heating system. Specific implementation method:

[0018] In order to clearly illustrate the technical features of the present invention, the present invention is described in detail below through specific implementation methods and in conjunction with the accompanying drawings.

[0019] like Figure 1As shown, a thermal management system for a liquid hydrogen station includes a water bath vaporizer 1, the inlet of the water bath vaporizer 1 is connected to a liquid hydrogen booster pump, the outlet of the water bath vaporizer 1 is connected to a hydrogen storage bottle group 3 through a vaporization pipeline 2, a heat exchange coil 4 is provided on the vaporization pipeline 2, an oil cooling exchanger 5 is provided outside the heat exchange coil 4, the oil cooling exchanger 5 is connected to a hydraulic system 7 through a hydraulic pipeline 6, a three-way valve 8 is provided on the vaporization pipeline 2 between the oil cooling exchanger 5 and the water bath vaporizer 1, the three-way valve 8 is connected to the hydrogen storage bottle group 3 through a delivery pipeline 9, and the water bath vaporizer 1, the three-way valve 8, and the hydraulic system 7 are respectively connected to a station control system 10.

[0020] A temperature sensor 11 is installed in the oil cooling exchanger 5 , and the temperature sensor 11 is connected to the station control system 10 . By detecting the temperature, the three-way valve 8 is controlled in real time. The three-way valve 8 is directly controlled by the station control system 10 to be turned on and off.

[0021] A hydrogen leakage sensor 12 is installed in the oil cooling exchanger 5, and the hydrogen leakage sensor 12 is connected to the station control system 10. When the hydrogen leakage sensor 12 detects hydrogen leakage inside the oil cooling exchanger 5, a signal is transmitted to the station control system 10. When the signal is higher than a threshold, the station control system 10 outputs an alarm and shuts down the machine.

[0022] The oil cooling exchanger 5 contains a certain volume of hydraulic oil or other lubricating media.

[0023] The hydraulic system 7 is a hydraulic system of a liquid hydrogen booster pump, and may also be other forms of hydraulic drive systems or a combination of multiple systems.

[0024] The oil cooling exchanger 5 is connected to an auxiliary heating system 14 via an auxiliary heating pipeline 13 , and the auxiliary heating system 14 is connected to the station control system 10 .

[0025] The auxiliary heating system 14 is a solar energy or electric heating or a combination of solar energy and electric heating. The electric energy required for electric heating can be obtained from the photovoltaic power grid, thereby minimizing the power consumption.

[0026] Working principle:

[0027] When the temperature sensor 11 detects that the temperature in the oil cooling heat exchanger 5 is higher than the set value, the signal is transmitted to the station control system 10, and the station control system 10 turns off the auxiliary heating system 14 and opens the three-way valve 8, so that the cold hydrogen gas exchanges heat with the oil cooling heat exchanger 5 to achieve a cold and hot balance, which can not only dissipate heat for the hydraulic system 7, but also use the heat of the hydraulic system 7 to gasify the liquid hydrogen;

[0028] When the temperature sensor 11 detects that the temperature in the oil cooling exchanger 5 is lower than the set value, the signal is transmitted to the station control system 10, and the station control system 10 turns on the auxiliary heating system 14, so that the heat of the auxiliary heating system 14 is transmitted to the gasification pipeline 2 through the oil cooling heat exchanger 5, thereby increasing the temperature in the pipeline and enhancing the gasification effect;

[0029] When the ambient temperature is too low in winter, the temperature of the hydraulic system 7 will remain at a low temperature. At this time, the water bath vaporizer 1 turns on the heating function to ensure the gasification effect. At the same time, in order to ensure that the hydraulic system 7 is not radiated by low temperature, the three-way valve 8 is closed, and the cold hydrogen avoids the hydraulic system 7 and directly reaches the hydrogen storage bottle group 3 through the delivery pipeline 9.

[0030] The above-mentioned specific implementation manner cannot be used as a limitation on the protection scope of the present utility model. For those skilled in the art, any replacement, improvement or change made to the implementation manner of the present utility model falls within the protection scope of the present utility model.

[0031] The matters not described in detail in the present invention are all known technologies to those skilled in the art.

Claims

1. A thermal management system for a liquid hydrogen station, characterized in that: It includes a water bath vaporizer, the inlet of the water bath vaporizer is connected to the liquid hydrogen booster pump, the outlet of the water bath vaporizer is connected to the hydrogen storage bottle group through a vaporization pipeline, a heat exchange coil is arranged on the vaporization pipeline, an oil cooling exchanger is arranged outside the heat exchange coil, the oil cooling exchanger is connected to the hydraulic system through a hydraulic pipeline, a three-way valve is arranged on the vaporization pipeline between the oil cooling exchanger and the water bath vaporizer, the three-way valve is connected to the hydrogen storage bottle group through a delivery pipeline, and the water bath vaporizer, the three-way valve and the hydraulic system are respectively connected to the station control system.

2. A thermal management system for a liquid hydrogen station according to claim 1, characterized in that: A temperature sensor is installed in the oil cooling exchanger, and the temperature sensor is connected to the station control system.

3. A thermal management system for a liquid hydrogen station according to claim 1, characterized in that: A hydrogen leakage sensor is installed in the oil cooling exchanger, and the hydrogen leakage sensor is connected to the station control system.

4. A thermal management system for a liquid hydrogen station according to claim 1, characterized in that: The oil cooling exchanger contains hydraulic oil.

5. A thermal management system for a liquid hydrogen station according to claim 1, characterized in that: The hydraulic system is a hydraulic system of a liquid hydrogen booster pump.

6. A thermal management system for a liquid hydrogen station according to claim 1, characterized in that: The oil cooling exchanger is connected to the auxiliary heating system via an auxiliary heating pipeline, and the auxiliary heating system is connected to the station control system.

7. A thermal management system for a liquid hydrogen station according to claim 6, characterized in that: The auxiliary heating system is a solar energy or electric heating or a combination of solar energy and electric heating.

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