Device for generating power by utilizing low-temperature temperature difference

Abstract

The embodiment of the invention provides a low-temperature thermoelectric power generation device, and relates to the technical field of low-temperature liquid gas supply. A low-temperature temperature difference power generation device comprises a gasifier which is connected with the gas outlet end of a low-temperature storage tank. The cooling fins are mounted on the vaporizer; the thermoelectric power generation sheet is installed on the cooling fin and used for converting the temperature difference generated after the low-temperature liquid is subjected to heat exchange through the vaporizer into electric energy and outputting V direct current; the charging and discharging controller is connected with the thermoelectric power generation sheet, the energy storage battery and the inverter and is used for managing collection, storage and distribution of electric energy; the energy storage battery receives and stores the electric energy generated by the thermoelectric power generation sheet through the charging and discharging controller; and the inverter is connected with the charging and discharging controller. The temperature difference in the gas supply process of the low-temperature liquid can be directly utilized to generate electric energy, self-sufficiency of energy is achieved, and dependence on a power grid or other external power sources is reduced.

Description

Technical Field

[0001] The present application relates to the technical field of cryogenic liquid gas supply, and more particularly, to a cryogenic temperature difference power generation device. Background Art

[0002] In the industrial production process, industrial gases are indispensable important resources. As a mainstream supply mode, cryogenic liquid gas supply is widely adopted due to its high efficiency and convenience. However, since industrial gases are usually hazardous chemicals, their storage containers - cryogenic storage tanks are usually placed outdoors or even in areas far from the main buildings. To ensure the safe use of these facilities, a variety of electrical equipment needs to be equipped, such as safety monitoring sensors, solenoid valves, temporary lighting, and alarms. However, these devices are often located in places without ready-made power sources, so there is a significant demand for electricity.

[0003] Cryogenic liquids (such as liquid nitrogen, liquid oxygen, etc.) are converted into gases through heat exchange in a vaporizer. During this process, the temperature of the heat sink of the vaporizer can drop to minus dozens of degrees or even lower, while the outdoor ambient temperature is generally around 20 degrees. This significant temperature difference provides a potential opportunity for power generation. Traditional power supply methods are difficult to meet the needs of these remote and outdoor locations. By directly installing a thermoelectric generator on the heat sink, this temperature difference can be converted into electrical energy, achieving energy self-sufficiency and reducing dependence on the power grid or other external power sources.

[0004] Although the cryogenic liquid gas supply system has many advantages, in practical applications, especially in cold and humid environments, the surface of the heat sink is prone to frosting. The frost layer will not only increase the thermal resistance and reduce the heat transfer efficiency, but may also cause a decline in the performance of the vaporizer and even lead to equipment failures.

[0005] Secondly, the thermoelectric generator is exposed to a harsh environment for a long time, especially in the face of extreme temperature changes and ultraviolet radiation, which is prone to cause material aging, thereby affecting its power generation efficiency and service life. Summary of the Invention

[0006] The present application aims to at least solve one of the technical problems in the prior art that traditional power supply methods are difficult to meet the needs of these remote and outdoor locations, and by directly installing a thermoelectric generator on the heat sink, this temperature difference can be converted into electrical energy, achieving energy self-sufficiency and reducing dependence on the power grid or other external power sources. For this purpose, the present application provides a cryogenic temperature difference power generation device.

[0007] According to an embodiment of the present application, a cryogenic temperature difference power generation device includes: A vaporizer, which is connected to the gas outlet end of the cryogenic storage tank; A heat sink, which is installed on the vaporizer; A thermoelectric power generation chip, which is installed on a heat sink and is used to convert the temperature difference generated after the low-temperature liquid undergoes heat exchange through a vaporizer into electrical energy and output 24V direct current; A charge and discharge controller, which is connected to the thermoelectric power generation chip, an energy storage battery, and an inverter, and manages the collection, storage, and distribution of electrical energy; An energy storage battery, which receives and stores the electrical energy generated by the thermoelectric power generation chip through the charge and discharge controller; An inverter, which is connected to the charge and discharge controller and converts the V direct current provided by the energy storage battery into 220V alternating current suitable for use by various security monitoring devices.

[0008] Furthermore, symmetric installation grooves two are opened on one side of the vaporizer, a moving rail is slidably arranged in each installation groove two, and a defrosting mechanism is installed between the two groups of moving rails.

[0009] Furthermore, the defrosting mechanism includes a pair of sliders, the pair of sliders slide in a pair of moving rails respectively, rotating rods are rotatably connected to the inner sides of the two sliders, a mounting plate is fixedly arranged between the two rotating rods, a defrosting pipe is installed on the lower side of the mounting plate, and the air inlet of the defrosting pipe is connected to the air outlet of a hot air blower.

[0010] Furthermore, a rack is arranged on one side of one of the moving rails, a gear is fixedly arranged on one of the rotating rods, the gear meshes with the rack, and a lead screw three is rotatably arranged in the other moving rail, and the lead screw three is threadedly connected to the slider.

[0011] Furthermore, a lead screw two is rotatably arranged in one of the installation grooves two, the lead screw two is threadedly connected to the moving rail, and the lead screw two is driven by a motor.

[0012] Furthermore, symmetric support rods are arranged at the upper end of the vaporizer, and one end of the mounting plate is supported by the support rods.

[0013] Furthermore, installation grooves one are opened at both the upper and lower ends on the other side of the vaporizer, a winding mechanism one is fixedly installed at one end of the installation groove one, a winding mechanism two is slidably installed in the installation groove one, and a film cloth is arranged between the winding mechanism one and the winding mechanism two.

[0014] Furthermore, the film cloth is located in front of the thermoelectric power generation chip to protect the thermoelectric power generation chip.

[0015] Furthermore, the winding mechanism one includes a pair of moving disks one, a rotating rod one is rotatably arranged between the pair of moving disks one, the pair of moving disks one are respectively fixedly arranged at one end of the upper and lower two groups of installation grooves one, the winding mechanism two includes a pair of moving disks two, a rotating rod two is rotatably arranged between the pair of moving disks two, the pair of moving disks two slide in the two groups of installation grooves one respectively, and both ends of the film cloth are wound around the rotating rod one and the rotating rod two respectively.

[0016] Further, a first lead screw is rotatably arranged in the first mounting groove located on the upper side. The first lead screw is threadedly connected to the upper end of the second moving plate, and the first lead screw is driven by a motor.

[0017] 1. The beneficial effects of the present application are as follows: During the process of supplying low-temperature liquid gas, a liquid that needs to be cooled by dozens of degrees or even more than one hundred degrees below zero generates gas through heat exchange in the vaporizer. At this time, the temperature of the heat sink of the vaporizer is generally dozens of degrees below zero. When the outdoor ambient temperature is around 20 degrees, a temperature difference of dozens of degrees or even more than one hundred degrees will be generated. Since the thermoelectric generator is loaded on the heat sink, this temperature difference can be utilized for power generation, enabling the present device to directly generate electric energy using the temperature difference during the process of supplying low-temperature liquid gas, achieving self-sufficiency in energy and reducing the dependence on the power grid or other external power sources.

[0018] 2. The beneficial effects of the present application are as follows: Hot air is generated by the hot air blower and blown out through the defrosting pipe under the mounting plate. When the mounting plate is at the upper end of the vaporizer, it can cover the entire heat sink and the surface of the vaporizer, achieving effective defrosting from top to bottom. When the mounting plate rotates to the vertical state, it ensures that the side can also be fully heated, thereby achieving a comprehensive and thorough defrosting effect. After removing the frost layer, the heat sink can more effectively exchange heat with the external environment, maintaining a high energy conversion efficiency and ensuring the stable output of the thermoelectric power generation system.

[0019] 3. The beneficial effects of the present application are as follows: The thermoelectric generator is shielded by the membrane cloth to reduce the aging speed of the thermoelectric generator. At the same time, the first winding mechanism and the second winding mechanism are used to wind the membrane cloth, enabling the membrane cloth to be used flexibly.

[0020] 4. Some additional aspects and advantages of the present application will be given in the following description, some will become obvious from the following description, or will be understood through the practice of the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings required for use in the embodiments of the present application will be briefly introduced below. It should be understood that the following drawings only show some embodiments of the present application and should not be regarded as limiting the scope. For those of ordinary skill in the art, other related drawings can also be obtained based on these drawings without creative efforts.

[0022] Figure 1 is a schematic perspective view of the overall structure of a low-temperature thermoelectric power generation device according to an embodiment of the present application; Figure 2 is a schematic diagram of the vaporizer and other structures according to an embodiment of the present application; Figure 3It is a schematic diagram of the split structure of a film cloth, a winding mechanism, etc. according to an embodiment of the present application; Figure 4 It is a schematic diagram of the split structure of a defrosting mechanism according to an embodiment of the present application; Figure 5 It is a schematic diagram of the split structure of a slider, etc. according to an embodiment of the present application; Figure 6 It is according to an embodiment of the present application Figure 5 Schematic diagram of the structure at position A; Figure 7 It is a schematic diagram of the split structure of a heat sink and a vaporizer according to an embodiment of the present application; Figure 8 It is a side view schematic diagram of the structure of the vaporizer according to an embodiment of the present application.

[0023] Icon: 1. Vaporizer; 2. Heat sink; 3. Thermoelectric generator; 4. Charge and discharge controller; 5. Energy storage battery; 6. Inverter; 7. Installation groove 1; 8. Installation groove 2; 9. Support rod; 10. Lead screw 1; 11. Lead screw 2; 12. Hot air blower; 13. Moving rail; 131. Rack; 14. Lead screw 3; 15. Slide block; 16. Rotating rod; 17. Installation plate; 18. Defrosting pipe; 19. Gear; 20. Moving disk 1; 21. Rotating rod 1; 22. Film cloth; 23. Moving disk 2; 24. Rotating rod 2. Detailed implementation manners

[0024] Next, the technical solutions in the embodiments of the present application will be described with reference to the accompanying drawings in the embodiments of the present application.

[0025] To make the purpose, technical solutions, and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, rather than all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative efforts fall within the scope of protection of the present application.

[0026] Therefore, the detailed description of the embodiments of the present application provided in the accompanying drawings is not intended to limit the scope of the present application to be protected, but merely represents the selected embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative efforts fall within the scope of protection of the present application.

[0027] It should be noted that: similar reference numerals and letters denote similar items in the following drawings. Therefore, once an item is defined in one drawing, it does not need to be further defined and explained in subsequent drawings.

[0028] In the description of the present application, it should be understood that the orientation or positional relationships indicated by the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc. are based on the orientation or positional relationships shown in the drawings. These are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation to the present application.

[0029] In addition, the terms "first" and "second" are only used for descriptive purposes and should not be construed as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include one or more of such features. In the description of the present application, the meaning of "a plurality" is two or more unless otherwise specifically defined.

[0030] In the present application, unless otherwise clearly specified and limited, the terms such as "installed", "connected", "connected to", "fixed", etc. should be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or integrated; it may be directly connected or indirectly connected through an intermediate medium, and it may be the communication inside two elements or the interaction relationship between two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present application can be understood according to specific circumstances.

[0031] In the present application, unless otherwise clearly specified and limited, the first feature being "above" or "below" the second feature may include the direct contact between the first and second features, or may include the situation where the first and second features are not in direct contact but in contact through additional features therebetween. Moreover, the first feature being "above", "over" and "on" the second feature includes that the first feature is directly above and obliquely above the second feature, or merely indicates that the horizontal height of the first feature is higher than that of the second feature. The first feature being "below", "beneath" and "under" the second feature includes that the first feature is directly below and obliquely below the second feature, or merely indicates that the horizontal height of the first feature is lower than that of the second feature.

[0032] Next, a low-temperature thermoelectric power generation device according to an embodiment of the present application will be described with reference to the drawings.

[0033] Embodiment 1:

[0034] As Figure 1 shown, a low-temperature thermoelectric power generation device according to an embodiment of the present application includes: Vaporizer 1, which is connected to the gas outlet end of the cryogenic storage tank. Cryogenic liquids (such as liquid nitrogen, liquid oxygen, etc.) are stored in the cryogenic storage tank. The temperatures of these liquids are usually dozens of degrees below zero or even lower. The cryogenic liquid enters Vaporizer 1 from the storage tank through a pipeline. Inside Vaporizer 1, the cryogenic liquid is converted into gas through a heat exchange process. Since a large amount of heat is absorbed during this process, the temperature of the heat sink 2 of Vaporizer 1 will drop to dozens of degrees below zero. Heat sink 2 is installed on Vaporizer 1.

[0035] The thermoelectric generator 3 is directly installed on the heat sink 2. At this time, one side of the heat sink 2 is in contact with the cryogenic liquid, and the other side is exposed to the ambient air, usually about 20 degrees Celsius, forming a significant temperature difference. The thermoelectric generator 3 utilizes this temperature difference to generate electrical energy and outputs approximately 24V direct current. The greater the temperature difference, the greater the generated current. The thermoelectric generator 3 is used to convert the temperature difference generated after the cryogenic liquid undergoes heat exchange through Vaporizer 1 into electrical energy and output 24V direct current.

[0036] Charge and discharge controller 4, which is connected to the thermoelectric generator 3, energy storage battery 5, and inverter 6, manages the collection, storage, and distribution of electrical energy. Energy storage battery 5 receives and stores the electrical energy generated by the thermoelectric generator 3 through the charge and discharge controller 4. Inverter 6 is connected to the charge and discharge controller 4 and converts the 24V direct current provided by the energy storage battery 5 into 220V alternating current suitable for use by various safety monitoring devices. The output end of the inverter 6 is connected to various electrical devices.

[0037] Embodiment 2:

[0038] Due to the temperature difference during the heat exchange process of Vaporizer 1, frost will form on the aluminum fins of Vaporizer 1 and the heat sink 2. To prevent this from affecting the use of the heat sink 2, defrosting is carried out on the basis of the above embodiment, such as Figure 1 and Figure 2 As shown, symmetric mounting grooves 8 are provided on one side of Vaporizer 1. A moving rail 13 is slidably arranged in each mounting groove 8, and a defrosting mechanism is installed between the two groups of moving rails 13.

[0039] As Figure 4 and Figure 8 As shown, the defrosting mechanism includes a pair of sliders 15, which are respectively slid in a pair of moving rails 13. The inner sides of the two sliders 15 are rotatably connected to a rotating rod 16. A mounting plate 17 is fixedly arranged between the two rotating rods 16. A defrosting pipe 18 is installed on the lower side of the mounting plate 17. The air inlet of the defrosting pipe 18 is connected to the air outlet of the hot air blower 12, as Figure 1As shown, the mounting plate 17 can be located at the upper end of the vaporizer 1. Through the hot air generated by the hot air blower 12, the defrosting pipe 18 blows hot air to the vaporizer 1 and the radiator fins 2 for defrosting. The top-down defrosting method can cover the defrosting range to the greatest extent and improve the defrosting effect. By rotating the rotating rod 16, the mounting plate 17 can be kept in a vertical state, and by sliding the defrosting pipe 18 in the second mounting groove 8 along the moving rail 13, the defrosting pipe 18 defrosts the vaporizer 1 and the radiator fins 2 from the side, ensuring that the side can also be fully heated, so as to achieve a comprehensive and thorough defrosting effect.

[0040] Furthermore, in order to make the mounting plate 17 rotate automatically, a rack 131 is arranged on one side of one of the moving rails 13, and a gear 19 is fixedly arranged on one of the rotating rods 16. The gear 19 meshes with the rack 131. A third lead screw 14 is rotatably arranged in the other moving rail 13. The third lead screw 14 is threadedly connected with the slider 15. The third lead screw 14 is driven by a motor, so that the slider 15 drives the mounting plate 17 to slide upward, and then the gear 19 meshes with the rack 131. The gear 19 drives the rotating rod 16 and the mounting plate 17 to rotate, so that the mounting plate 17 is kept in a vertical state.

[0041] The connecting pipe between the hot air blower 12 and the defrosting pipe 18 is a flexible hose and has a certain length to meet the moving stroke of the mounting plate 17.

[0042] In addition, a second lead screw 11 is rotatably arranged in one of the second mounting grooves 8. The second lead screw 11 is threadedly connected with the moving rail 13. The second lead screw 11 is driven by a motor. By rotating the second lead screw 11, the moving rail 13 can be automatically moved up and down to meet the effect of automatic defrosting.

[0043] Symmetric support rods 9 are arranged at the upper end of the vaporizer 1. When the mounting plate 17 is located at the upper end of the vaporizer 1, one end of the mounting plate 17 is supported by the support rod 9.

[0044] Embodiment 3:

[0045] In order to extend the service life of the thermoelectric generator 3, mounting grooves 7 are opened at both the upper and lower ends on the other side of the vaporizer 1. A first winding mechanism is fixedly installed at one end of the mounting groove 7. A second winding mechanism is slidably installed in the mounting groove 7. A film cloth 22 is arranged between the first winding mechanism and the second winding mechanism. The film cloth 22 is located in front of the thermoelectric generator 3 to protect the thermoelectric generator 3. The film cloth 22 can be made of materials with high light transmittance, strong weather resistance and excellent heat conduction performance. For example, materials such as polytetrafluoroethylene PTFE or polyester fiber can be selected. These materials not only have good light transmittance and weather resistance, but also allow heat transfer to a certain extent. The film cloth 22 has good air permeability, so that moisture can pass through and will not accumulate on the surface of the thermoelectric generator 3, thereby reducing the problem of accelerated aging caused by the formation of condensed water.

[0046] In addition, the first winding mechanism includes a pair of first moving disks 20. A first rotating rod 21 is rotatably arranged between the pair of first moving disks 20. The pair of first moving disks 20 are respectively fixedly arranged at one ends of the upper and lower groups of first mounting grooves 7. The second winding mechanism includes a pair of second moving disks 23. A second rotating rod 24 is rotatably arranged between the pair of second moving disks 23. The pair of second moving disks 23 are respectively slidable in the two groups of first mounting grooves 7. Two ends of the membrane cloth 22 are respectively wound around the first rotating rod 21 and the second rotating rod 24. When the second moving disk 23 slides to the other end of the first mounting groove 7 and approaches the first moving disk 20, by rotating the first rotating rod 21 and the second rotating rod 24, the winding of the membrane cloth 22 can be realized, so that the thermoelectric power generation sheet 3 is exposed, meeting the flexible use of the membrane cloth 22.

[0047] A first lead screw 10 is rotatably arranged in the upper first mounting groove 7. The first lead screw 10 is threadedly connected to the upper end of the second moving disk 23. The first lead screw 10 is driven by a motor. By rotating the first lead screw 10, the second moving disk 23 automatically slides, further improving the effect of the flexible use of the membrane cloth 22.

[0048] The above are only the embodiments of the present application and are not used to limit the protection scope of the present application. For those skilled in the art, various changes and modifications can be made to the present application. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application. It should be noted that similar reference numerals and letters indicate similar items in the following drawings. Therefore, once an item is defined in one drawing, it does not need to be further defined and explained in subsequent drawings.

[0049] The above is only the specific implementation manner of the present application, but the protection scope of the present application is not limited thereto. Any person skilled in the art can easily think of changes or replacements within the technical scope disclosed by the present application, and all should be covered by the protection scope of the present application. Therefore, the protection scope of the present application shall be subject to the protection scope of the claims.

Claims

1. A low temperature temperature difference power generation device, characterized in that: include: A vaporizer (1), the vaporizer (1) being connected to a gas outlet end of a cryogenic storage tank; A heat sink (2), wherein the heat sink (2) is mounted on the gasifier (1); A temperature difference power generation sheet (3), the temperature difference power generation sheet (3) being mounted on the heat sink (2) and used for converting the temperature difference generated by the low-temperature liquid after heat exchange through the vaporizer (1) into electrical energy, and outputting 24V direct current; A charge and discharge controller (4), the charge and discharge controller (4) being connected to the temperature difference power generation sheet (3), the energy storage battery (5) and the inverter (6), and managing the collection, storage and distribution of electric energy; An energy storage battery (5), wherein the energy storage battery (5) receives and stores the electric energy generated by the thermoelectric power generation sheet (3) through a charge and discharge controller (4); An inverter (6), wherein the inverter (6) is connected to the charge and discharge controller (4) and converts the 24V direct current provided by the energy storage battery (5) into 220V alternating current suitable for use by various types of security monitoring equipment.

2. The low temperature temperature difference power generation device according to claim 1, characterized in that: Symmetrical mounting grooves (8) are provided on one side of the gasifier (1), a movable rail (13) is slidably arranged in each mounting groove (8), and a defrosting mechanism is installed between the two sets of movable rails (13).

3. The low temperature temperature difference power generation device according to claim 2, characterized in that: The defrosting mechanism comprises a pair of sliders (15), the pair of sliders (15) slide in a pair of movable rails (13) respectively, the inner sides of the two sliders (15) are rotatably connected to rotating rods (16), a mounting plate (17) is fixedly arranged between the two rotating rods (16), a defrosting pipe (18) is installed on the lower side of the mounting plate (17), and an air inlet of the defrosting pipe (18) is connected to an air outlet of the hot air blower (12).

4. The low temperature temperature difference power generation device according to claim 3 is characterized in that: A rack (131) is provided on one side of one of the movable rails (13), a gear (19) is fixedly provided on one of the rotating rods (16), the gear (19) meshing with the rack (131), and a screw rod (14) is rotatably provided in the other movable rail (13), the screw rod (14) being threadedly connected to the slider (15).

5. The low temperature temperature difference power generation device according to claim 4, characterized in that: A second screw rod (11) is rotatably arranged in one of the second mounting grooves (8), the second screw rod (11) is threadedly connected to the movable rail (13), and the second screw rod (11) is driven by a motor.

6. The low temperature temperature difference power generation device according to claim 5, characterized in that: A symmetrical support rod (9) is provided at the upper end of the gasifier (1), and one end of the mounting plate (17) is supported by the support rod (9).

7. The low temperature temperature difference power generation device according to claim 6, characterized in that: The other side of the vaporizer (1) is provided with a mounting groove (7) at both upper and lower ends, a winding mechanism (1) is fixedly mounted at one end of the mounting groove (7), a winding mechanism (2) is slidably mounted in the mounting groove (7), and a membrane cloth (22) is arranged between the winding mechanisms (1) and (2).

8. The low temperature temperature difference power generation device according to claim 7, characterized in that: The membrane cloth (22) is located on the front side of the thermoelectric power generation sheet (3) to protect the thermoelectric power generation sheet (3).

9. The low temperature temperature difference power generation device according to claim 8, characterized in that: The winding mechanism 1 comprises a pair of movable disks 1 (20), a rotating rod 1 (21) is rotatably arranged between the pair of movable disks 1 (20), and the pair of movable disks 1 (20) are respectively fixedly arranged at one end of the upper and lower groups of mounting grooves 1 (7); the winding mechanism 2 comprises a pair of movable disks 2 (23), a rotating rod 2 (24) is rotatably arranged between the pair of movable disks 2 (23), and the pair of movable disks 2 (23) slide in the two groups of mounting grooves 1 (7), respectively, and the two ends of the membrane cloth (22) are respectively wound around the rotating rod 1 (21) and the rotating rod 2 (24).

10. The low temperature temperature difference power generation device according to claim 9, characterized in that: A screw rod (10) is rotatably arranged in the installation groove (7) located on the upper side. The screw rod (10) is threadedly connected to the upper end of the movable plate (23). The screw rod (10) is driven by a motor.

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