Hydrogen flash steam recovery power generation hydrogen refueling station

Abstract

The utility model relates to the technical field of liquid hydrogen storage, in particular to a hydrogen flash steam recovery power generation hydrogen refueling station. Comprising a liquid hydrogen storage tank, the bottom of the liquid hydrogen storage tank contains liquid hydrogen, the top of the liquid hydrogen storage tank contains hydrogen flash steam, the top of the liquid hydrogen storage tank is connected with a gas inlet of a first-stage hydrogen booster pump through a pipeline, a gas outlet of the first-stage hydrogen booster pump is connected with a buffer tank through a pipeline, and the buffer tank is connected with a hydrogen fuel cell through a branch of the pipeline. The hydrogen fuel cell is connected with the charging pile, the other branch is connected with a gas inlet of the second-stage hydrogen booster pump, a gas outlet of the second-stage hydrogen booster pump is connected with the high-pressure buffer tank through a pipeline, and the high-pressure buffer tank is connected with the hydrogen hydrogenation machine through a pipeline. The hydrogen fuel cell can charge the charging pile, so that the charging function of the electric car is achieved, hydrogen flash steam at the top of the liquid hydrogen storage tank is fully utilized, the charging function is achieved in the hydrogenation skid-mounted station, and the space of the hydrogenation skid-mounted station is fully utilized.

Description

TECHNICAL FIELD

[0001] The utility model relates to liquid hydrogen hydrogen storage technical field especially relates to a hydrogen flash gas recovery power generation hydrogenation station. BACKGROUND

[0002] At present, the current hydrogenation station generally only has hydrogenation function, and the function is relatively single, since the hydrogen energy automobile market share is small, and the electric car market share is already very large, the charging facilities are now seriously insufficient, if hydrogen can be used in hydrogenation station to generate electricity, and the electric car is charged through the charging pile, then it will play a good complementary role to the charging facilities, and the energy and space advantages of the hydrogenation station can be fully utilized. In addition, during the actual hydrogen storage process of the liquid hydrogen storage tank, part of the liquid hydrogen will vaporize, and hydrogen flash gas will be generated at the top of the liquid hydrogen storage tank. This part of the gas is not fully utilized in the liquid hydrogen storage tank, resulting in waste. There is no good solution to the above problems at present.

[0003] In summary, how to fully utilize the hydrogen flash gas and space of the hydrogenation station has become a technical problem that needs to be solved in the industry. UTILITY MODEL CONTENTS

[0004] The utility model provides a hydrogen flash gas recovery power generation hydrogenation station to make up for the deficiency of prior art, solve the problem of single function of the previous hydrogenation station, and solve the problem that the hydrogen flash gas in the liquid hydrogen storage tank of the previous hydrogenation station is not fully utilized.

[0005] The utility model adopts the technical scheme to solve the above technical problems:

[0006] A hydrogen flash gas recovery power generation hydrogenation station, comprising a liquid hydrogen storage tank, the bottom of the liquid hydrogen storage tank containing liquid hydrogen, the top being hydrogen flash gas, the top of the liquid hydrogen storage tank being connected to the gas inlet of a first hydrogen gas booster pump through a pipeline, the gas outlet of the first hydrogen gas booster pump being connected to a buffer tank through a pipeline, the buffer tank being connected to a hydrogen fuel cell through one branch of the pipeline, the hydrogen fuel cell being connected to a charging pile, the other branch being connected to the gas inlet of a second hydrogen gas booster pump, the gas outlet of the second hydrogen gas booster pump being connected to a high-pressure buffer tank through a pipeline, and the high-pressure buffer tank being connected to a hydrogenation machine through a pipeline.

[0007] A pressure reducing valve is arranged on the pipeline between the buffer tank and the hydrogen fuel cell.

[0008] The hydrogen fuel cell is also connected to a lithium battery.

[0009] The bottom of the liquid hydrogen storage tank is connected to the inlet of a heat exchange cooling assembly through a pipeline, and the outlet of the heat exchange cooling assembly is connected to the gas inlet of the first hydrogen gas booster pump through a pipeline.

[0010] The heat exchange and cooling assembly includes an air bath vaporizer and a water bath vaporizer connected together.

[0011] A hydrogen cooler is installed on the pipeline between the high-pressure buffer tank and the hydrogen refueling machine. The hydrogen cooler is connected to the heat exchange and cooling components for heat exchange.

[0012] The present invention adopts the above solution and has the following advantages:

[0013] The hydrogen flash vapor at the top of the liquid hydrogen storage tank is pressurized by a primary hydrogen booster pump and then supplied to a buffer tank. The buffer tank supplies hydrogen to the hydrogen fuel cell, which can charge the charging station, thus enabling the electric vehicle to charge. On the other hand, it supplies hydrogen to a secondary hydrogen booster pump, which pressurizes the hydrogen and supplies it to a high-pressure buffer tank. The high-pressure buffer tank then supplies hydrogen to the hydrogen refueling machine, thus enabling the vehicle to refuel. This system not only makes full use of the hydrogen flash vapor at the top of the liquid hydrogen storage tank, but also enables charging functionality within the hydrogen refueling skid station, making full use of the space in the hydrogen refueling skid station. Attached image description:

[0014] Figure 1 This is a schematic diagram of the structural principle of this utility model.

[0015] In the diagram, 1 is a liquid hydrogen storage tank, 2 is a primary hydrogen booster pump, 3 is a buffer tank, 4 is a hydrogen fuel cell, 5 is a charging pile, 6 is a secondary hydrogen booster pump, 7 is a high-pressure buffer tank, 8 is a hydrogen refueling machine, 9 is a pressure reducing valve, 10 is a lithium battery, 11 is a heat exchange and cooling assembly, and 12 is a hydrogen cooler. Detailed implementation method:

[0016] To clearly illustrate the technical features of this solution, the present invention will be described in detail below through specific embodiments and in conjunction with the accompanying drawings.

[0017] like Figure 1 As shown, a hydrogen flash vapor recovery power generation and hydrogen refueling station includes a liquid hydrogen storage tank 1. The bottom of the liquid hydrogen storage tank 1 is filled with liquid hydrogen, and the top is hydrogen flash vapor. The top of the liquid hydrogen storage tank 1 is connected to the inlet of a primary hydrogen booster pump 2 via a pipeline. The outlet of the primary hydrogen booster pump 2 is connected to a buffer tank 3 via a pipeline. The buffer tank 3 is then connected to a hydrogen fuel cell 4 via one pipeline. The hydrogen fuel cell 4 is connected to a charging pile 5. The other pipeline is connected to the inlet of a secondary hydrogen booster pump 6. The outlet of the secondary hydrogen booster pump 6 is connected to a high-pressure buffer tank 7 via a pipeline. The high-pressure buffer tank 7 is then connected to a hydrogen refueling machine 8 via a pipeline.

[0018] A pressure reducing valve 9 is installed on the pipeline between the buffer tank 3 and the hydrogen fuel cell 4 to reduce the pressure of the hydrogen entering the hydrogen fuel cell 4.

[0019] The hydrogen fuel cell 4 is also connected to the lithium battery 10, and the lithium battery 10 can be charged, and the lithium battery 10 can also provide power for the hydrogen fuel cell 4 to work.

[0020] The bottom of the liquid hydrogen storage tank 1 is connected with the inlet of the heat exchange cooling assembly 11 through a pipeline, and the outlet of the heat exchange cooling assembly 11 is connected with the gas inlet of the first hydrogen booster pump 2 through a pipeline, so that sufficient hydrogen can be provided for the first hydrogen booster pump 2 when the hydrogen flash gas is insufficient.

[0021] The heat exchange cooling assembly 11 comprises a air bath vaporizer and a water bath vaporizer connected with each other, liquid hydrogen can be gasified, and a cold source can be provided for a required place.

[0022] A hydrogen cooler 12 is arranged on the pipeline between the high-pressure buffer tank 7 and the hydrogen hydrogenation machine 8, the hydrogen cooler 12 can cool the hydrogen discharged from the high-pressure buffer tank 7, so as to control the temperature of the hydrogen entering the hydrogen hydrogenation machine 8, and the hydrogen cooler 12 is connected with the heat exchange cooling assembly 11 for heat exchange, and the cold source generated by the heat exchange cooling assembly 11 is fully utilized.

[0023] Working principle:

[0024] The hydrogen flash gas at the top of the liquid hydrogen storage tank 1 enters the buffer tank 3 for storage under the action of the first hydrogen booster pump 2, when the hydrogen flash gas is insufficient, the liquid hydrogen at the bottom of the liquid hydrogen storage tank 1 can enter the heat exchange cooling assembly 11 for gasification under the action of the first hydrogen booster pump 2, and the hydrogen after gasification also enters the buffer tank 3 for storage under the action of the first hydrogen booster pump 2, the buffer tank 3 supplies hydrogen to the hydrogen fuel cell 4 on the one hand, and the hydrogen fuel cell 4 can charge the charging pile 5, so as to realize the charging function of the electric vehicle, on the other hand, the buffer tank 3 supplies hydrogen to the second hydrogen booster pump 6, the second hydrogen booster pump 6 pressurizes the hydrogen and supplies the high-pressure buffer tank 7, the high-pressure hydrogen in the high-pressure buffer tank 7 first enters the hydrogen cooler 12 for cooling, and then enters the hydrogen hydrogenation machine 8, so as to realize the hydrogenation function of the vehicle. The cold source generated by the heat exchange cooling assembly 11 can also be provided to the hydrogen cooler 12 to cool the hydrogen entering the hydrogen hydrogenation machine 8, thereby saving energy.

[0025] The above specific embodiment cannot be regarded as a limitation on the protection scope of the utility model, and any alternative improvement or change made by the person skilled in the art to the embodiment of the utility model falls within the protection scope of the utility model.

[0026] The unexplained part of the utility model is the known technology of the person skilled in the art.

Claims

1. A hydrogen flash boil recovery power generating hydrogen station characterized by: The application relates to a hydrogen fuel cell system, which comprises a liquid hydrogen storage tank, the bottom of which contains liquid hydrogen and the top of which contains hydrogen flash gas, wherein the top of the liquid hydrogen storage tank is connected with the gas inlet of a first-stage hydrogen booster pump through a pipeline, the gas outlet of the first-stage hydrogen booster pump is connected with a buffer tank through a pipeline, the buffer tank is connected with a hydrogen fuel cell through one branch pipeline, the hydrogen fuel cell is connected with a charging pile, the other branch pipeline is connected with the gas inlet of a second-stage hydrogen booster pump, the gas outlet of the second-stage hydrogen booster pump is connected with a high-pressure buffer tank through a pipeline, and the high-pressure buffer tank is connected with a hydrogen refueling machine through a pipeline.

2. A hydrogen flash gas recovery power generating hydrogen station according to claim 1, wherein: A pressure reducing valve is arranged on the pipeline between the buffer tank and the hydrogen fuel cell.

3. A hydrogen flash gas recovery power generating hydrogen station according to claim 1, wherein: The hydrogen fuel cell is further connected with a lithium battery.

4. A hydrogen flash gas recovery power generating hydrogen station according to claim 1, wherein: The bottom of the liquid hydrogen storage tank is connected with the inlet of a heat exchange cooling assembly through a pipeline, and the outlet of the heat exchange cooling assembly is connected with the gas inlet of the first-stage hydrogen booster pump through a pipeline.

5. A hydrogen flash gas recovery power generating hydrogen station according to claim 4, wherein: The heat exchange cooling assembly comprises a air bath vaporizer and a water bath vaporizer which are connected.

6. A hydrogen flash gas recovery power generating hydrogen station according to claim 4, wherein: A hydrogen cooler is arranged on the pipeline between the high-pressure buffer tank and the hydrogen refueling machine, and the hydrogen cooler is connected with the heat exchange cooling assembly for heat exchange.

Images