Liquid hydrogen vaporizer

Abstract

The present disclosure provides a liquid hydrogen vaporizer, comprising: a conveying mechanism configured to convey liquid hydrogen; the first heat exchange mechanism comprises a containing assembly configured to contain a liquid working medium; the heat exchange assembly communicates with the containing assembly and is constructed to guide the liquid working medium to flow into the heat exchange assembly so as to absorb heat of air and convert the heat into a gaseous working medium; and the second heat exchange mechanism is constructed to receive the gaseous working medium, and the conveying mechanism is partially arranged in the second heat exchange mechanism, so that the liquid hydrogen absorbs heat of the gaseous working medium and is converted into hydrogen.

Description

Technical Field

[0001] At least one embodiment of the present disclosure relates to the technical field of vaporizers, and particularly to a liquid hydrogen vaporizer. Background Art

[0002] Liquid hydrogen is stored at an extremely low temperature of -253°C. When in use, it is necessary to heat and convert liquid hydrogen into gaseous hydrogen, that is, liquid hydrogen is vaporized into hydrogen.

[0003] The process of liquid hydrogen vaporization requires heat absorption, which is usually provided by an external heat source. The liquid hydrogen vaporizer uses ambient air as a natural heat source. Mainly through the heat exchange principle, the heat in the ambient air is transferred to liquid hydrogen, causing it to change from a liquid state to a gaseous state. During the vaporization process of the liquid hydrogen vaporizer, liquid hydrogen is generally transported to the heat exchange fins or heat exchange tubes of the liquid hydrogen vaporizer. Due to the large surface area of the heat exchange fins or heat exchange tubes, the heat exchange fins or heat exchange tubes can come into full contact with the air to transfer the heat of the air to the liquid hydrogen in the heat exchange fins or heat exchange tubes, causing the liquid hydrogen to vaporize into hydrogen. However, the temperature around the heat exchange fins or heat exchange tubes is extremely low, and it is easy for the moisture in the air to condense and frost, resulting in poor heat exchange effect and affecting the vaporization performance of the liquid hydrogen vaporizer. Summary of the Invention

[0004] In view of this, the present disclosure provides a liquid hydrogen vaporizer for at least partially solving the above technical problems and improving the heat exchange efficiency and vaporization performance of the liquid hydrogen vaporizer.

[0005] An embodiment of the present disclosure provides a liquid hydrogen vaporizer, including: a conveying mechanism configured to convey liquid hydrogen; a first heat exchange mechanism including: a containing component configured to contain a liquid working medium; a heat exchange component communicating with the containing component and configured to guide the liquid working medium to flow into the heat exchange component to absorb the heat of the air and be converted into a gaseous working medium; a second heat exchange mechanism configured to receive the gaseous working medium, and a part of the conveying mechanism is disposed in the second heat exchange mechanism, such that the liquid hydrogen absorbs the heat of the gaseous working medium and is converted into hydrogen.

[0006] According to an embodiment of the present disclosure, a part of the heat exchange component extends into the containing component, and the height of the heat exchange component is higher than the bottom surface of the containing component, such that the liquid working medium in the containing component overflows into the heat exchange component.

[0007] According to an embodiment of the present disclosure, the heat exchange assembly includes: a first part located within the accommodation assembly, with an open top provided at the top of the first part and higher than the bottom surface of the accommodation assembly, such that the liquid working medium within the accommodation assembly overflows from the open into the first part; a second part communicating with the bottom of the first part and located outside the accommodation assembly, configured to guide the liquid working medium to flow to the second part to absorb the heat of the air, so that the liquid working medium is converted into the gaseous working medium.

[0008] According to an embodiment of the present disclosure, both the first part and the second part include: a housing configured to absorb the heat of the air; a core body disposed within the housing and forming a communicating flow channel with the open, the core body being configured to guide the liquid working medium to flow into the housing, such that the gaseous working medium converted from the liquid working medium absorbing the heat of the air flows out of the housing along the flow channel.

[0009] According to an embodiment of the present disclosure, fins are provided on the side wall of the second part, and the fins surround the second part in a spiral structure.

[0010] According to an embodiment of the present disclosure, the bottom of the second heat exchange mechanism is higher than that of the first heat exchange mechanism, and the first heat exchange mechanism further includes: a first delivery pipe communicating between the second heat exchange mechanism and the accommodation assembly to deliver the gaseous working medium; a second delivery pipe communicating between the second heat exchange mechanism and the accommodation assembly, such that the liquid working medium within the second heat exchange mechanism flows to the accommodation assembly along the second delivery pipe.

[0011] According to an embodiment of the present disclosure, the first heat exchange mechanism further includes a gas collection assembly communicatively disposed between the accommodation assembly and the first delivery pipe to collect the gaseous working medium.

[0012] According to an embodiment of the present disclosure, the liquid hydrogen vaporizer further includes: a collection assembly to collect the temperature parameter of the heat exchange assembly; a control module configured to respond to the collection assembly and control the first delivery pipe to close to stop delivering the gaseous working medium when the temperature parameter is less than a preset threshold.

[0013] According to an embodiment of the present disclosure, the liquid hydrogen vaporizer further includes a collection assembly disposed at the bottom of the first heat exchange mechanism to collect the condensed water generated by the heat exchange assembly.

[0014] According to an embodiment of the present disclosure, the liquid hydrogen vaporizer further includes a drainage assembly communicating with the collection assembly to drain the condensed water within the collection assembly.

[0015] According to the liquid hydrogen vaporizer provided by the present disclosure, during the process of vaporizing liquid hydrogen into hydrogen, the heat exchange component guides the liquid working medium in the accommodating component to flow into the heat exchange component, so that the liquid working medium in the heat exchange component absorbs the heat in the ambient air and is converted into a gaseous working medium. The gaseous working medium is transported into the second heat exchange mechanism. The transport mechanism for transporting liquid hydrogen is arranged in the second heat exchange mechanism, so that the liquid hydrogen absorbs the heat of the gaseous working medium and is converted into hydrogen. Since the heat exchange component absorbs heat from the air without power, the liquid working medium in the heat exchange component evaporates and boils to be converted into a gaseous working medium, and the gaseous working medium is centrally transported to the second heat exchange structure, so that the liquid hydrogen absorbs heat and is converted into hydrogen, thereby improving the heat exchange efficiency and vaporization performance. In addition, the gaseous working medium is an intermediate working medium between the ambient temperature and the liquid hydrogen temperature, and the temperature difference between the heat exchange component and the air is small, weakening the degree of condensation and frosting of the moisture in the air, and further improving the vaporization performance of the liquid hydrogen vaporizer. Description of the Drawings

[0016] Through the following description of the embodiments of the present disclosure with reference to the drawings, the above and other objects, features and advantages of the present disclosure will become clearer. In the drawings:

[0017] Figure 1 A three-dimensional schematic diagram of a liquid hydrogen vaporizer according to an embodiment of the present disclosure is schematically shown;

[0018] Figure 2 A side view of a second heat exchange mechanism according to an embodiment of the present disclosure is schematically shown;

[0019] Figure 3 Another side view of a second heat exchange mechanism according to an embodiment of the present disclosure is schematically shown;

[0020] Figure 4 Another side view of a second heat exchange mechanism according to an embodiment of the present disclosure is schematically shown;

[0021] Figure 5 A side view of a first heat exchange mechanism according to an embodiment of the present disclosure is schematically shown;

[0022] Figure 6 Another side view of a first heat exchange mechanism according to an embodiment of the present disclosure is schematically shown;

[0023] Figure 7 Another side view of a first heat exchange mechanism according to an embodiment of the present disclosure is schematically shown;

[0024] Figure 8 A three-dimensional schematic diagram of a heat exchange component according to an embodiment of the present disclosure is schematically shown;

[0025] Figure 9 A partial view of a transport mechanism according to an embodiment of the present disclosure is schematically shown;

[0026] Figure 10 Schematically shows a side view of a liquid hydrogen vaporizer set according to an embodiment of the present disclosure; and

[0027] Figure 11 Schematically shows another side view of the liquid hydrogen vaporizer set according to an embodiment of the present disclosure.

[0028] Reference numerals

[0029] 1. Conveying mechanism; 2. First heat exchange mechanism; 21. Accommodating assembly; 22. Heat exchange assembly; 221. First part; 2211. Open end; 222. Second part; 223. Fins; 224. Housing; 225. Core; 23. First conveying pipe; 231. Air outlet hole; 24. Second conveying pipe; 25. Gas collecting assembly; 26. Support plate; 27. Through hole; 3. Second heat exchange mechanism; 31. Liquid collecting tank; 4. Collection assembly; 5. Drainage assembly. Detailed implementation manners

[0030] To make the objectives, technical solutions, and advantages of the present disclosure more clear and understandable, the following further describes the present disclosure in detail with reference to specific embodiments and the accompanying drawings.

[0031] The terms used herein are merely for describing specific embodiments and are not intended to limit the present disclosure. The terms "including", "comprising", etc. used herein indicate the presence of the described features, steps, operations, and / or components, but do not exclude the presence or addition of one or more other features, steps, operations, or components.

[0032] All terms used herein, including technical and scientific terms, have the meanings commonly understood by those skilled in the art, unless otherwise defined. It should be noted that the terms used herein should be interpreted as having a meaning consistent with the context of this specification and should not be interpreted in an idealized or overly rigid manner.

[0033] In the case of using expressions such as "at least one of A, B, and C, etc.", generally, it should be interpreted according to the meaning commonly understood by those skilled in the art. For example, a "system having at least one of A, B, and C" should include, but is not limited to, a system having only A, only B, only C, having A and B, having A and C, having B and C, and / or having A, B, and C. In the case of using expressions such as "at least one of A, B, or C, etc.", generally, it should be interpreted according to the meaning commonly understood by those skilled in the art. For example, a "system having at least one of A, B, or C" should include, but is not limited to, a system having only A, only B, only C, having A and B, having A and C, having B and C, and / or having A, B, and C.

[0034] It should also be noted that the directional terms mentioned in the embodiments, such as "upper", "lower", "front", "rear", "left", "right", etc., are only references to the directions in the accompanying drawings and are not used to limit the protection scope of the present disclosure. Throughout the accompanying drawings, the same elements are represented by the same or similar reference numerals. When it may cause confusion in the understanding of the present disclosure, conventional structures or configurations will be omitted.

[0035] A liquid hydrogen vaporizer is a heat exchange device that uses ambient air as a heat source to convert liquid hydrogen into gaseous hydrogen. During the vaporization process of the liquid hydrogen vaporizer, liquid hydrogen is generally transported to the heat exchange fins or heat exchange tubes of the liquid hydrogen vaporizer. Due to the large surface area of the heat exchange fins or heat exchange tubes, the heat exchange fins or heat exchange tubes can be in full contact with the air to transfer the heat of the air to the liquid hydrogen in the heat exchange fins or heat exchange tubes, so that the liquid hydrogen is vaporized into hydrogen. However, the temperature around the heat exchange fins or heat exchange tubes is extremely low, and it is easy to cause the condensation and frosting of moisture in the air, resulting in poor heat exchange effect and affecting the vaporization performance of the liquid hydrogen vaporizer.

[0036] An embodiment of the present disclosure provides a liquid hydrogen vaporizer, as Figure 1 shown, the liquid hydrogen vaporizer includes a conveying mechanism 1, a first heat exchange mechanism 2, and a second heat exchange mechanism 3. The conveying mechanism 1 is configured to convey liquid hydrogen. The first heat exchange mechanism 2 includes a containing component 21 and a heat exchange component 22. The containing component 21 is configured to contain a liquid working medium. The heat exchange component 22 is communicated with the containing component 21 and is configured to guide the liquid working medium to flow into the heat exchange component 22 to absorb the heat of the air and be converted into a gaseous working medium. The second heat exchange mechanism 3 is configured to receive the gaseous working medium, and the conveying mechanism 1 is partially disposed in the second heat exchange mechanism 3, so that the liquid hydrogen absorbs the heat of the gaseous working medium and is converted into hydrogen.

[0037] It should be noted that the boiling point of liquid hydrogen is -252.87 °C under standard atmospheric pressure (101.325 kPa). The liquid working medium represents the working medium in a liquid state. The gaseous working medium represents the working medium in a gaseous state. The boiling point of the working medium needs to be higher than the boiling point of liquid hydrogen and lower than the temperature of the air in the environment to meet the requirement that the liquid working medium absorbs heat from the air without power and is converted into a gaseous working medium, so that the liquid hydrogen absorbs the heat of the gaseous working medium and is converted into hydrogen. Therefore, the working medium can be ammonia, tetrafluoroethane, dichlorofluoromethane, etc., which is not limited herein.

[0038] Specifically, the first heat exchange mechanism 2 includes a containing component 21 and a heat exchange component 22. The containing component 21 has a containing space for containing a liquid working medium. For example, the containing component 21 can be a box, a tank, etc., which is not limited herein. The containing component 21 has good thermal conductivity to exchange heat with the outside air.

[0039] The heat exchange component 22 has good thermal conductivity to achieve heat exchange by contacting with air. Specifically, the heat exchange component 22 guides the liquid working medium in the accommodation component 21 to flow into the heat exchange component 22, so that the liquid working medium in the heat exchange component 22 absorbs heat from the air without power, and is converted into a gaseous working medium by evaporation and boiling of the liquid working medium in the heat exchange component 22, so as to achieve efficient heat transfer at a relatively small temperature difference and improve the heat exchange efficiency.

[0040] The second heat exchange mechanism 3 includes but is not limited to being connected to the first heat exchange mechanism 2 through pipelines and conveying components to receive the gaseous working medium centrally conveyed by the first heat exchange mechanism 2, so that the liquid hydrogen absorbs the heat of the gaseous working medium and is converted into hydrogen. The outside of the second heat exchange mechanism 3 can be wrapped with heat insulation materials, so that the wall temperature of the second heat exchange mechanism 3 is approximately the same as the ambient temperature, reducing the occurrence of frosting or icing.

[0041] The conveying mechanism 1 includes but is not limited to a conveying pipeline and a control valve for conveying liquid hydrogen. In an exemplary embodiment, as Figure 1 、 Figure 2 、 Figure 3 and Figure 4 shown, the conveying pipeline in the second heat exchange mechanism 3 can be in a serpentine structure. It can be understood that the conveying pipeline in the second heat exchange mechanism 3 can also be in a spiral structure, a meandering structure, etc., which are not limited herein. The conveying mechanism 1 has good thermal conductivity, so that the liquid hydrogen absorbs the heat of the gaseous working medium and is converted into hydrogen, completing the vaporization process.

[0042] In such an embodiment, during the process of vaporizing liquid hydrogen into hydrogen, the heat exchange component 22 guides the liquid working medium in the accommodation component 21 to flow into the heat exchange component 22, so that the liquid working medium in the heat exchange component 22 absorbs the heat of the ambient air without power and is converted into a gaseous working medium. The gaseous working medium is conveyed into the second heat exchange mechanism 3. The conveying mechanism 1 for conveying liquid hydrogen is arranged in the second heat exchange mechanism 3, so that the liquid hydrogen absorbs the heat of the gaseous working medium and is converted into hydrogen. Since the heat exchange component 22 can absorb heat from the air without power at a relatively small temperature difference and is converted into a gaseous working medium by evaporation and boiling of the liquid working medium in the heat exchange component 22, efficient heat transfer is achieved. The gaseous working medium is centrally conveyed to the second heat exchange structure, so that the liquid hydrogen absorbs heat and is converted into hydrogen, so as to improve the heat exchange efficiency and vaporization performance. In addition, the gaseous working medium is an intermediate working medium between the ambient temperature and the liquid hydrogen temperature, and the temperature difference between the heat exchange component 22 and the air is small, weakening the degree of moisture condensation and frosting in the air, and further improving the vaporization performance of the liquid hydrogen vaporizer.

[0043] In an exemplary embodiment, as Figure 1 、 Figure 5 and Figure 6As shown, the heat exchange component 22 partially extends into the accommodation component 21. The height of the heat exchange component 22 is higher than the bottom surface of the accommodation component 21, such that the liquid working medium in the accommodation component 21 overflows into the heat exchange component 22.

[0044] As Figure 1 , Figure 5 and Figure 6 As shown, the heat exchange component 22 partially extends into the accommodation component 21 and is in communication with the accommodation component 21 to guide the liquid working medium to flow into the heat exchange component 22, such that the liquid working medium absorbs the heat of the air and is converted into a gaseous working medium. The heat exchange component 22 is disposed at the bottom of the accommodation component 21. It can be understood that the heat exchange component 22 can also be disposed on the side wall of the accommodation component 21 to guide the liquid working medium to flow into the heat exchange component 22.

[0045] The heat exchange component 22 has good thermal conductivity and can achieve efficient heat transfer at a relatively small temperature difference. Specifically, when the liquid working medium is liquid ammonia, the temperature of the liquid ammonia is lower than -33.34 °C, and the temperature of the air is generally greater than zero degree. The heat exchange component 22 can efficiently transfer the heat of the air to the liquid working medium, such that the liquid working medium absorbs the heat of the air and is converted into a gaseous working medium.

[0046] The heat exchange component 22 partially extends into the accommodation component 21. The top of the heat exchange component 22 is higher than the bottom surface of the accommodation component 21, such that a liquid working medium layer is formed on the bottom surface of the accommodation component 21. The liquid working medium layer can absorb the heat of the air transferred by the bottom surface of the accommodation component 21, reduce heat loss, and further improve the heat exchange efficiency.

[0047] It can be understood that the top of the heat exchange component 22 can also be substantially flush with the bottom surface of the accommodation component 21 to guide the liquid working medium to flow into the heat exchange component 22. As Figure 7 shown, a plurality of heat exchange components 22 are provided and are spaced apart from each other.

[0048] In one exemplary embodiment, as Figure 1 , Figure 5 and Figure 8 shown, the heat exchange component 22 includes a first part 221 and a second part 222. The first part 221 is located within the accommodation component 21. An opening 2211 is provided at the top end of the first part 221 and is higher than the bottom surface of the accommodation component 21, such that the liquid working medium in the accommodation component 21 overflows from the opening 2211 into the first part 221. The second part 222 is in communication with the bottom of the first part 221 and is located outside the accommodation component 21 and is configured to guide the liquid working medium to flow to the second part 222 to absorb the heat of the air, such that the liquid working medium is converted into a gaseous working medium.

[0049] It should be noted that the liquid working medium in the second heat exchange mechanism 3 continuously flows along the second delivery pipe 24 into the accommodation assembly 21. The liquid working medium in the accommodation assembly 21 continuously increases. Since the top of the first part 221 is higher than the bottom surface of the accommodation assembly 21, when the liquid level of the liquid working medium reaches the top of the first part 221, the liquid working medium flows into the first part 221 through the open end 2211 in an overflow manner. Therefore, a liquid working medium layer with a certain liquid level height is formed at the bottom of the accommodation assembly 21 to fully absorb the heat of the bottom of the accommodation assembly 21 and the top of the heat exchange assembly 22 in contact with the air, and reduce heat dissipation.

[0050] The first part 221 and the second part 222 can be an integral structure, and the second part 222 is communicatively arranged at the bottom of the first part 221. The heat exchange assembly 22 formed by the first part 221 and the second part 222 is vertically arranged. It can be understood that the heat exchange assembly 22 can also form an angle with the horizontal plane, which is specifically limited according to actual needs to guide the liquid working medium to flow into the first part 221 and the second part 222.

[0051] According to an embodiment of the present disclosure, the second part 222 is located outside the accommodation assembly 21, and the second part 222 is in contact with the air to absorb the heat of the air, so that the liquid working medium is converted into a gaseous working medium. The gaseous working medium flows from the second part 222 to the first part 221 and flows out from the open end 2211 at the top of the first part 221, and then flows through the first delivery pipe 23 to the second heat exchange mechanism 3, so that the liquid hydrogen absorbs the heat of the gaseous working medium and is converted into hydrogen.

[0052] In an exemplary embodiment, as Figure 1 、 Figure 5 and Figure 8 shown, both the first part 221 and the second part 222 include a housing 224 and a core 225. The housing 224 is configured to absorb the heat of the air. The core 225 is arranged inside the housing 224 and forms a communicating flow channel with the open end 2211. The core 225 is configured to guide the liquid working medium to flow into the housing 224, so that the gaseous working medium formed by the liquid working medium absorbing the heat of the air flows out of the housing 224 along the flow channel.

[0053] Specifically, the housing 224 is generally made of a metal material with good thermal conductivity to absorb the heat of the air. For example, copper, aluminum, etc., which are not limited herein and are specifically limited according to actual needs. The core 225 is located on the inner wall of the housing 224 and is generally made of a porous material, such as metal wire mesh, fiber, carbon nanotube, etc., which are specifically limited according to actual needs and have good capillary action to transport the liquid working medium.

[0054] According to an embodiment of the present disclosure, the liquid working medium flows to the opening 2211 at the top of the first part 221. Under the capillary action of the core 225, the liquid working medium sequentially flows along the core 225 to the first part 221 and the second part 222. The second part 222 contacts the air and absorbs the heat of the air to form a heating end, so that the liquid working medium absorbs the heat of the air and is converted into a gaseous working medium, and the gaseous working medium flows upward along the flow channel and flows out.

[0055] In an exemplary embodiment, as Figure 1 , Figure 5 and Figure 8 shown, the side wall of the second part 222 is provided with fins 223, and the fins 223 surround the second part 222 to form a spiral structure. Specifically, the second part 222 is vertically arranged, and the fins 223 are arranged on the side wall of the second part 222 and are wound into a spiral structure from top to bottom in the vertical direction. By arranging the fins 223, the contact area between the second part 222 and the air is increased, and the heat exchange efficiency of the second part 222 is improved. The spiral structure of the fins 223 is beneficial to the condensed water on the second part 222 to flow downward along the fins 223, so that the condensed water flows to the bottom of the second tube and falls off, weakening the degree of condensation and frosting, and improving the vaporization performance of the liquid hydrogen vaporization system.

[0056] It can be understood that the shape of the fins 223 can also be annular or longitudinal straight fins 223, which are specifically defined according to actual needs.

[0057] In an exemplary embodiment, as Figure 1 , Figure 5 and Figure 6 shown, the bottom of the second heat exchange mechanism 3 is higher than the first heat exchange mechanism 2, and the first heat exchange mechanism 2 further includes a first delivery pipe 23 and a second delivery pipe 24. The first delivery pipe 23 is connected between the second heat exchange mechanism 3 and the accommodation assembly 21 to deliver the gaseous working medium. The second delivery pipe 24 is connected between the second heat exchange mechanism 3 and the accommodation assembly 21, so that the liquid working medium in the second heat exchange mechanism 3 flows along the second delivery pipe 24 to the accommodation assembly 21.

[0058] Specifically, as Figure 1 and Figure 9 shown, a plurality of air outlet holes 231 are provided on the first delivery pipe 23 located in the second heat exchange mechanism 3, and the plurality of air outlet holes 231 face the delivery mechanism 1, so that the gaseous working medium ejected from the air outlet holes 231 contacts the delivery mechanism 1, so that the liquid hydrogen in the delivery mechanism 1 absorbs the heat of the gaseous working medium and is converted into hydrogen.

[0059] In an exemplary embodiment, the second delivery pipe 24 can be wrapped with heat insulation and heat preservation materials, so that the wall temperature of the second delivery pipe 24 is approximately the same as the ambient temperature, reducing the occurrence of frosting or icing.

[0060] According to an embodiment of the present disclosure, the accommodation component 21, the first delivery pipe 23, the second heat exchange mechanism 3, and the second delivery pipe 24 form a sealed closed loop. The liquid working medium absorbs the heat of the air through the heat exchange component 22 and is converted into a gaseous working medium. Subsequently, the gaseous working medium is transported along the first delivery pipe 23 into the second heat exchange mechanism 3. The liquid hydrogen in the transport mechanism 1 absorbs the heat of the gaseous working medium and is converted into hydrogen, completing the vaporization process. At the same time, the gaseous working medium condenses and is converted into a liquid working medium. Since the bottom of the second heat exchange mechanism 3 is higher than that of the first heat exchange mechanism 2, there is a height difference, and the liquid working medium is transported along the second delivery pipe 24 to the accommodation component 21, realizing recycling to continuously convert liquid hydrogen into hydrogen.

[0061] In one exemplary embodiment, as Figure 1 , Figure 5 and Figure 6 shown, the first heat exchange mechanism 2 may be a sealed box. The first heat exchange mechanism 2 further includes a gas collection component 25. The gas collection component 25 is located at the top of the accommodation component 21 and is communicatively arranged between the accommodation component 21 and the first delivery pipe 23 to collect the gaseous working medium. The gas collection component 25 is a cover structure with a cross-section gradually decreasing from bottom to top. After converging the gaseous working medium, it is centrally transported through the first delivery pipe 23 to the second heat exchange mechanism 3.

[0062] In one exemplary embodiment, as Figure 1 , Figure 5 and Figure 6 shown, the second heat exchange mechanism 3 further includes a liquid collection tank 31. The liquid collection tank 31 is arranged at the bottom of the second heat exchange mechanism 3. The cross-section of the liquid collection tank 31 continuously decreases from top to bottom, so that the liquid working medium in the second heat exchange mechanism 3 flows downward to the liquid collection tank 31, facilitating the liquid collection tank 31 to collect the liquid working medium.

[0063] In one exemplary embodiment, as Figure 1 shown, the bottom of the second heat exchange mechanism 3 is higher than that of the first heat exchange mechanism 2, that is, the bottom of the liquid collection tank 31 is higher than that of the first heat exchange mechanism 2, so that the liquid working medium in the second heat exchange mechanism 3 flows along the second delivery pipe 24 to the first heat exchange mechanism 2.

[0064] According to an embodiment of the present disclosure, the bottom of the liquid collection tank 31 is higher than that of the first heat exchange mechanism 2, so that the liquid working medium in the liquid collection tank 31 flows through the second delivery pipe 24 into the accommodation component 21 under the action of gravity, realizing power-free transportation and reducing energy consumption.

[0065] In one exemplary embodiment, as Figure 1 shown, the liquid hydrogen vaporizer further includes a collection component 4, which is arranged at the bottom of the first heat exchange mechanism 2 to collect the condensed water generated by the heat exchange component 22.

[0066] Specifically, the collection component 4 includes, but is not limited to, being disposed at the bottom of the accommodation component 21 and below the heat exchange component 22 through welding, bolting, clamping, or any other connection means. The collection component 4 has a storage space to collect the condensed water generated by the first heat exchange mechanism 2.

[0067] According to an embodiment of the present disclosure, the liquid working medium is located within the heat exchange component 22, and the temperature of the liquid working medium is lower than the temperature of the air. When the air comes into contact with the heat exchange component 22, condensed water will be generated. The condensed water will flow into the collection component 4 under the action of gravity.

[0068] In one exemplary embodiment, as Figure 1 shown, the bottom of the collection component 4 gradually converges inward from top to bottom, so that the collected condensed water converges and is convenient for drainage, in order to reduce the residual condensed water and impurities in the collection component 4.

[0069] In one exemplary embodiment, as Figure 1 shown, a support plate 26 is provided at the top of the collection component 4. The bottom of the heat exchange component 22 is mounted on the support plate 26. The support plate 26 provides a supporting force for the heat exchange component 22. A through hole 27 is also provided on the support plate 26 to allow the condensed water to flow downward through the through hole 27 into the collection component 4.

[0070] In one exemplary embodiment, as Figure 1 shown, the liquid hydrogen vaporizer further includes a drainage component 5, which is communicated with the collection component 4 to drain the condensed water in the collection component 4. The drainage component 5 may include a drainage pipe and a drainage valve, and the drainage pipe is controlled to be opened or closed by the drainage valve to drain the condensed water as needed.

[0071] In one exemplary embodiment, the liquid hydrogen vaporizer further includes a collection component (not shown in the figure) and a control module (not shown in the figure). The collection component is configured to collect the temperature parameter of the heat exchange component 22. The control module is configured to respond to the collection component and control the first delivery pipe 23 to close to stop delivering the gaseous working medium when the temperature parameter is less than a preset threshold.

[0072] Specifically, the collection component may be a temperature sensor to collect the temperature parameter of the heat exchange component 22. The preset threshold may be 0.1 °C. It can be understood that the preset threshold may also be 0.2 °C, 0.3 °C, 0.4 °C, 0.5 °C, etc., which is specifically determined according to actual needs. When the temperature parameter is less than the preset threshold, it indicates that frosting or icing is about to occur on the surface of the heat exchange component 22.

[0073] According to an embodiment of the present disclosure, by providing a collection component and a control module, when the temperature parameter is less than a preset threshold, the control module controls the first delivery pipe 23 to close, so as to stop delivering the gaseous working medium, block the delivery of the gaseous working medium to the second heat exchange mechanism 3, stop the heat exchange of the second heat exchange mechanism 3, prevent the gaseous working medium from being converted into a liquid working medium, thereby stop delivering the liquid working medium to the first heat exchange mechanism 2, stop the heat exchange of the heat exchange component 22, and avoid frosting or icing of the heat exchange component 22.

[0074] In an exemplary embodiment, as Figure 10 and Figure 11 shown, a plurality of liquid hydrogen vaporizers may be provided, and the plurality of liquid hydrogen vaporizers are arranged in parallel to form a liquid hydrogen vaporizer group. The liquid hydrogen vaporizer group further includes an input pipe and an output pipe. The input pipe is located outside the second heat exchange mechanism 3 to communicate with the inlets of the delivery mechanisms 1 of the plurality of liquid hydrogen vaporizers and deliver liquid hydrogen. The output pipe communicates with the outlets of the delivery mechanisms 1 of the plurality of liquid hydrogen vaporizers to receive the converted hydrogen and deliver it.

[0075] According to the liquid hydrogen vaporizer provided in this embodiment, during the process of vaporizing liquid hydrogen into hydrogen, the heat exchange component 22 guides the liquid working medium in the accommodation component 21 to flow into the heat exchange component 22, so that the liquid working medium in the heat exchange component 22 absorbs the heat in the ambient air and is converted into a gaseous working medium. The gaseous working medium is delivered into the second heat exchange mechanism 3. The delivery mechanism 1 for delivering liquid hydrogen is arranged in the second heat exchange mechanism 3, so that the liquid hydrogen absorbs the heat of the gaseous working medium and is converted into hydrogen. Since the heat exchange component 22 absorbs heat from the air without power, the liquid working medium in the heat exchange component 22 evaporates and boils to be converted into a gaseous working medium, and the gaseous working medium is centrally delivered to the second heat exchange structure, so that the liquid hydrogen absorbs heat and is converted into hydrogen, thereby improving the heat exchange efficiency and vaporization performance. In addition, the gaseous working medium is an intermediate working medium between the ambient temperature and the liquid hydrogen temperature, and the temperature difference between the heat exchange component 22 and the air is small, weakening the degree of condensation and frosting of the moisture in the air, and further improving the vaporization performance of the liquid hydrogen vaporizer.

[0076] The above describes the embodiments of the present disclosure. However, these embodiments are only for illustrative purposes and are not intended to limit the scope of the present disclosure. Although the embodiments are described separately above, this does not mean that the measures in each embodiment cannot be used advantageously in combination. The scope of the present disclosure is defined by the appended claims and their equivalents. Without departing from the scope of the present disclosure, those skilled in the art can make various substitutions and modifications, and these substitutions and modifications should all fall within the scope of the present disclosure.

Claims

1. A liquid hydrogen vaporizer, characterized in that: include: A delivery mechanism (1) configured to deliver liquid hydrogen; The first heat exchange mechanism (2) comprises: A containing assembly (21) configured to contain a liquid working medium; and A heat exchange component (22) is connected to the containing component (21) and is configured to guide the liquid working medium to flow into the heat exchange component (22) to absorb heat from the air and convert it into a gaseous working medium; and The second heat exchange mechanism (3) is configured to receive the gaseous working medium, and the conveying mechanism (1) is partially arranged in the second heat exchange mechanism (3), so that the liquid hydrogen absorbs the heat of the gaseous working medium and is converted into hydrogen.

2. The liquid hydrogen vaporizer according to claim 1, characterized in that: The heat exchange component (22) partially extends into the containing component (21), and the height of the heat exchange component (22) is higher than the bottom surface of the containing component (21), so that the liquid working medium in the containing component (21) overflows into the heat exchange component (22).

3. The liquid hydrogen vaporizer according to claim 2, characterized in that: The heat exchange component (22) comprises: A first part (221) is located in the containing assembly (21), the top of the first part (221) is provided with an opening (2211) and is higher than the bottom surface of the containing assembly (21), so that the liquid working medium in the containing assembly (21) overflows from the opening (2211) into the first part (221); and The second part (222) is communicated with the bottom of the first part (221) and is located outside the containing assembly (21), and is configured to guide the liquid working medium to flow to the second part (222) to absorb heat from the air, so that the liquid working medium is converted into the gaseous working medium.

4. The liquid hydrogen vaporizer according to claim 3, characterized in that: The first part (221) and the second part (222) both include: a housing (224) configured to absorb heat from the air; and The core (225) is arranged in the shell (224) and forms a flow channel communicating with the opening (2211). The core (225) is configured to guide the liquid working medium to flow into the shell (224), so that the liquid working medium absorbs heat from the air and is converted into the gaseous working medium, which flows out of the shell (224) along the flow channel.

5. The liquid hydrogen vaporizer according to claim 3, characterized in that: The side wall of the second portion (222) is provided with a fin (223), and the fin (223) surrounds the second portion (222) to form a spiral structure.

6. The liquid hydrogen vaporizer according to claim 1, characterized in that: The bottom of the second heat exchange mechanism (3) is higher than that of the first heat exchange mechanism (2), and the first heat exchange mechanism (2) further comprises: a first delivery pipe (23) connected between the second heat exchange mechanism (3) and the containing assembly (21) to deliver the gaseous working medium; and The second delivery pipe (24) is connected between the second heat exchange mechanism (3) and the containing assembly (21), so that the liquid working medium in the second heat exchange mechanism (3) flows along the second delivery pipe (24) to the containing assembly (21).

7. The liquid hydrogen vaporizer according to claim 6, characterized in that: The first heat exchange mechanism (2) further comprises a gas collecting component (25) which is arranged in communication between the containing component (21) and the first delivery pipe (23) to collect the gaseous working medium.

8. The liquid hydrogen vaporizer according to claim 6, characterized in that: Also includes: A collection component for collecting temperature parameters of the heat exchange component (22); as well as The control module is configured to, in response to the collection component, control the first delivery pipe (23) to close in order to stop delivering the gaseous working medium when the temperature parameter is less than a preset threshold.

9. The liquid hydrogen vaporizer according to claim 1, characterized in that: It also includes a collecting component (4) disposed at the bottom of the first heat exchange mechanism (2) to collect condensed water generated by the heat exchange component (22).

10. The liquid hydrogen vaporizer according to claim 9, characterized in that: It also includes a drainage component (5) which is in communication with the collection component (4) so ​​as to drain condensed water in the collection component (4).

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