A natural gas hydrate high-pressure collection and storage device

Abstract

The present invention discloses a high-pressure collection and storage device for natural gas hydrates, comprising a storage cabinet, a storage rack, a vertical storage tank, a hot and cold assembly, a thermoelectric power generation recovery component, a high-pressure pipe, a sealing assembly, and a controller, wherein the storage rack is fixedly mounted inside the storage cabinet. During the production of natural gas hydrates, the present invention maintains the stability of the natural gas hydrates and utilizes thermoelectric power generation technology during the heating and release of the natural gas hydrates. This technology generates electrical energy between the inside and outside of the vertical storage tank through the temperature difference between the hot box and the cold box. This technology is specifically implemented by varying the temperature difference between the components of the arc disk cold end, the arc disk hot end, the first plate-shaped cold end, the first plate-shaped hot end, the second plate-shaped cold end, and the second plate-shaped hot end. While these components coordinate with the state of the hydrate, the thermoelectric module converts the temperature difference into electrical energy for recovery. This technology can achieve energy recovery between low-temperature and high-temperature environments through the thermoelectric power generation module, greatly improving energy utilization.

Description

Technical Field

[0001] The present invention relates to the field of energy storage technology, and in particular to a natural gas hydrate high-pressure collection and storage device. Background Art

[0002] As a potential clean energy source, the efficient and safe collection and storage of natural gas hydrates is of great significance for optimizing future energy structures. However, existing high-pressure natural gas hydrate collection and storage devices have some significant shortcomings in practical applications, especially in utilizing internal temperature differences for thermoelectric power generation. This not only wastes valuable thermal energy resources but also limits the overall efficiency and sustainability of the system.

[0003] Current natural gas hydrate collection and storage devices primarily focus on ensuring the stable storage of hydrates at room temperature to prevent them from decomposing and releasing methane due to rising external temperatures. These devices typically rely on high pressure to maintain the hydrates' physical form and use thermal insulation to reduce the impact of external heat on the internal environment. While this approach can achieve a certain degree of safe hydrate storage, it overlooks the potential for energy recovery by utilizing the internal temperature gradient. This shortcoming means that a significant amount of latent heat generated by phase change processes, as well as waste heat generated during the device's operation, is wasted and not effectively reused.

[0004] When natural gas hydrates are collected from the seabed and stored in high-pressure containers, a significant temperature gradient forms inside the container due to the relatively low external ambient temperature and the internal heat generated by phase change processes and equipment operation. This temperature difference can theoretically be used to drive thermoelectric conversion devices such as thermoelectric batteries or other forms of energy recovery systems. However, existing technologies do not fully utilize this feature, resulting in a large amount of heat energy being wasted during equipment operation and failing to be converted into useful electrical output. In addition, due to the lack of thermoelectric power generation design, temperature management within the storage tank relies more on active cooling or heating systems, increasing energy consumption and operating costs.

[0005] The failure to effectively utilize the temperature differences maintained within the collection and storage device to generate electricity reflects the current technology's inadequate consideration of comprehensive energy utilization. Against the backdrop of growing global demand for clean energy, any renewable energy development should strive to maximize the energy potential of every link. Cleverly incorporating thermoelectric power generation technology could not only improve the self-sufficiency of the entire system and reduce reliance on external power sources, but also provide additional power support for other auxiliary systems (such as monitoring and control), thereby enhancing system flexibility and reliability.

[0006] Therefore, how to provide a high-pressure collection and storage device for natural gas hydrates is an urgent problem that needs to be solved by those skilled in the art. Summary of the Invention

[0007] One object of the present invention is to provide a high-pressure collection and storage device for natural gas hydrates. During the production process of natural gas hydrates, the present invention maintains the stability of natural gas hydrates. During the heating and release of natural gas hydrates, thermoelectric power generation technology is used to generate electrical energy between the inside and outside of the storage tank through the temperature difference between the hot box and the cold box. The specific implementation method is to use the temperature difference between the elements of the arc disk cold end, the arc disk hot end, the first plate-shaped cold end, the first plate-shaped hot end, the second plate-shaped cold end and the second plate-shaped hot end. While these elements cooperate with the state of the hydrate, the thermoelectric module converts the temperature difference into electrical energy for recovery. This technology can achieve energy recovery between low-temperature and high-temperature environments through the thermoelectric power generation module, greatly improving energy utilization.

[0008] When the present invention accurately controls the temperature inside the storage tank by cold air, the arc disk cold end is intermittently opened, and the arc disk cold end and the first plate-shaped hot end cooperate to generate electricity by temperature difference. At the same time, the arc disk cold end releases heat to increase the temperature inside the storage tank, thereby preventing the temperature from being too low and deviating from the preset data; the arc disk hot end and the first plate-shaped cold end simultaneously form temperature difference power generation, and the arc disk hot end is intermittently opened, and the arc disk hot end absorbs heat, thereby preventing the temperature inside the storage tank from being too high and the natural gas from being released unevenly.

[0009] The present invention designs a multi-stage sealing component, including a sealing cover, a sealing ring, a sealing valve ball, etc. These components help ensure the sealing of the high-pressure pipe connection and avoid natural gas leakage or failure.

[0010] The cold air main and hot air main of the present invention transport cold and hot gases, and ensure the precise flow of cold and hot air through the gas transfer pipe system, effectively promoting the temperature control inside the storage tank; at the same time, heat can be recovered through external pipes, reducing the system's dependence on external energy; the design of the storage tank is modular, and the uniform temperature straight pipe and uniform temperature curved pipe help maintain the temperature balance of the internal gas and water, avoiding local overcooling or overheating problems; the circulating gas channel further enhances the control ability of gas flow and temperature balance, ensuring the stability of stored hydrates.

[0011] According to an embodiment of the present invention, a high-pressure natural gas hydrate collection and storage device includes a storage cabinet, a storage rack, a vertical storage tank, a hot and cold assembly, a thermoelectric power generation recovery component, a high-pressure pipe, a sealing assembly, and a controller, wherein the storage rack is fixedly mounted inside the storage cabinet, the vertical storage tank is fixedly mounted on four sides of the storage rack, the hot and cold assembly is fixedly mounted on the inner bottom of the storage cabinet, the thermoelectric power generation recovery component is fixedly mounted on the vertical storage tank, the thermoelectric power generation recovery component is fixedly mounted inside the hot and cold assembly, the high-pressure pipe is fixedly mounted on both sides of the top of the vertical storage tank, the sealing assembly is fixedly mounted inside the high-pressure pipe, and the controller is fixedly mounted on the outer surface of the storage cabinet;

[0012] The hot and cold assembly includes a hot box, a semiconductor refrigeration plate group and a cold box, wherein the bottom of the hot box is fixedly mounted on the inner bottom of the storage cabinet, the bottom of the semiconductor refrigeration plate group is fixedly mounted on the top of the hot box, and the bottom of the cold box is fixedly mounted on the top of the semiconductor refrigeration plate group;

[0013] The thermoelectric power generation recovery component includes a circular thermoelectric power generation component, a plate-shaped thermoelectric power generation component and a thermoelectric component. The circular thermoelectric power generation component is fixedly mounted on the inner top of the storage tank, the plate-shaped thermoelectric power generation component is fixedly mounted in the cooling and heating component, and the thermoelectric component is fixedly mounted on the bottom of the storage tank.

[0014] The circular temperature difference power generation assembly includes an arc disk cold end and an arc disk hot end, wherein the inner wall of the arc disk cold end is fixedly sleeved on the outer wall of the arc disk hot end;

[0015] The plate-shaped temperature difference power generation component includes a first plate-shaped cold end and a first plate-shaped hot end. The first plate-shaped cold end is fixedly installed on the inner top of the cold box, and the first plate-shaped hot end is fixedly installed on the inner bottom of the hot box.

[0016] Furthermore, hinges are fixedly provided on both sides of the front end of the storage cabinet, a split door panel is rotatably provided on the front end of the storage cabinet, the split door panel is fixedly mounted on the hinges, and a sliding door handle is fixedly provided on the outer wall of the split door panel;

[0017] A ventilation hole is provided in the middle of the storage rack;

[0018] A touch screen is fixedly arranged on the outer wall of the controller.

[0019] Furthermore, a first air inlet pipe is fixedly provided on the top of the storage tank, a circulating air channel is opened in the tank wall of the storage tank, a temperature-equalizing straight pipe is fixedly provided on the inner wall of the storage tank, a temperature-equalizing curved pipe is fixedly provided on the inner bottom of the storage tank, and a recovery box is fixedly provided on the bottom of the storage tank;

[0020] The temperature difference component includes a cold transfer box and a hot transfer box. The cold transfer box is fixedly installed on the inner bottom of the recovery box, and the hot transfer box is fixedly installed on the inner top of the recovery box.

[0021] Furthermore, the hot and cold assembly also includes a mounting bracket, an air pump, a second air inlet pipe, an air filter pipe, a third air inlet pipe and a first electric air valve, wherein the bottom of the mounting bracket is fixedly mounted on the inner bottom of the storage cabinet, the top of the mounting bracket is fixedly sleeved on the semiconductor refrigeration plate group, the pump seat of the air pump is fixedly mounted on the inner bottom of the storage cabinet, one end of the second air inlet pipe is fixedly mounted on the air pump, one end of the air filter pipe is fixedly mounted on the other end of the second air inlet pipe, the other end of the air filter pipe extends out of the storage cabinet, one end of the third air inlet pipe is fixedly mounted on the air pump, the other end of the third air inlet pipe is fixedly mounted on the hot box and the cold box, and the first electric air valve is fixedly mounted on one end of the third air inlet pipe close to the hot box and the cold box.

[0022] Furthermore, the hot and cold components also include a hot air main, a hot air branch pipe, a second electric gas valve, a cold air main, a cold air branch pipe, a third electric gas valve and an air transfer pipe, wherein one end of the hot air main is fixedly mounted on the hot box, and the other end of the hot air branch pipe extends out of the storage cabinet, one end of the hot air branch pipe is fixedly mounted on the hot air main, and the other end of the hot air branch pipe is fixedly mounted on the bottom of the air transfer pipe, two second electric gas valves are provided, and the two second electric gas valves are respectively fixedly mounted on the hot air main and the hot air branch pipe, one end of the cold air main is fixedly mounted on the cold box, one end of the cold air main is located in the storage cabinet, one end of the cold air branch pipe is fixedly mounted on the cold air main, the other end of the cold air branch pipe is fixedly mounted on the bottom of the air transfer pipe, and the top of the air transfer pipe is fixedly mounted on the first air inlet pipe.

[0023] Furthermore, the circular temperature difference power generation component includes a temperature difference metal rod, an insulating rubber layer, a temperature difference metal sleeve and a temperature difference connecting rod, wherein the outer wall of the temperature difference metal rod is fixedly inserted into the hot end of the arc disk, the inner wall of the insulating rubber layer is fixedly installed on the outer wall of the top of the temperature difference metal rod, the bottom of the temperature difference metal sleeve is fixedly inserted into the cold end of the arc disk, the inner wall of the top of the temperature difference metal sleeve is fixedly sleeved on the insulating rubber layer, and the temperature difference connecting rod is fixedly installed on the top of the temperature difference metal sleeve.

[0024] Furthermore, the plate-shaped temperature difference power generation component also includes a second plate-shaped cold end, a second plate-shaped hot end and a thermal conduction plate. The second plate-shaped cold end is fixedly installed inside the cold transfer box, and the second plate-shaped hot end is fixedly installed inside the thermal transfer box. The bottom of the thermal conduction plate is fixedly installed on the first plate-shaped cold end, the first plate-shaped hot end, the second plate-shaped cold end and the top of the second plate-shaped hot end are each provided with one.

[0025] Furthermore, the temperature difference component includes a switching air pipe, a temperature sensor, a hot air inlet pipe for converting air, a cold air inlet pipe for converting air, a fourth electric air valve, a hot air exhaust pipe for converting air and a cold air exhaust pipe for converting air, wherein the top of the switching air pipe is fixedly installed on the bottom of the storage tank, the temperature sensor is fixedly installed on the switching air pipe, one end of the hot air inlet pipe for converting air is fixedly installed on the switching air pipe, the other end of the hot air inlet pipe for converting air is fixedly installed on the heat transfer box, one end of the cold air inlet pipe for converting air is fixedly installed on the switching air pipe, the other end of the cold air inlet pipe for converting air is fixedly installed on the cold transfer box, the fourth electric air valve is fixedly installed on the hot air inlet pipe and the cold air inlet pipe, one end of the hot air exhaust pipe for converting air is fixedly installed on the heat transfer box, the other end of the hot air exhaust pipe for converting air extends out of the storage cabinet, one end of the cold air exhaust pipe for converting air is fixedly installed on the cold transfer box, and the other end of the cold air exhaust pipe for converting air is located in the storage cabinet.

[0026] Furthermore, the sealing assembly includes a sealing cover, a sealing ring, a sealing valve ball, a sealing spring and a spring seat plate, wherein the sealing cover is threadedly mounted on the top of the high-pressure pipe, the sealing ring is fixedly mounted on the inner wall of the high-pressure pipe, the sealing valve ball is fixedly mounted on the top of the sealing spring, the bottom of the sealing spring is fixedly mounted on the spring seat plate, and the spring seat plate is fixedly mounted on the inner wall of the high-pressure pipe.

[0027] Furthermore, the sealing assembly also includes a breathable arc ring, a sealing plate, a tension spring, a stop rod and a switch valve, wherein the breathable arc ring is fixedly mounted on the inner wall of the high-pressure pipe, the sealing plate is fixedly mounted on one end of the tension spring, the other end of the tension spring is fixedly mounted on the breathable arc ring, the bottom of the stop rod is fixedly mounted on the sealing plate, and the switch valve is fixedly mounted on the high-pressure pipe.

[0028] The beneficial effects of the present invention are:

[0029] The present invention maintains the stability of natural gas hydrates during the production process. During the process of heating and releasing natural gas hydrates, thermoelectric power generation technology is used to generate electrical energy between the inside and outside of the storage tank through the temperature difference between the hot box and the cold box. The specific implementation method is to use the temperature difference between the components of the arc disk cold end, the arc disk hot end, the first plate-shaped cold end, the first plate-shaped hot end, the second plate-shaped cold end and the second plate-shaped hot end. While these components cooperate with the state of the hydrate, the thermoelectric module converts the temperature difference into electrical energy for recovery. This technology can achieve energy recovery between low-temperature and high-temperature environments through the thermoelectric power generation module, greatly improving energy utilization.

[0030] When the present invention accurately controls the temperature inside the storage tank by cold air, the arc disk cold end is intermittently opened, and the arc disk cold end and the first plate-shaped hot end cooperate to generate electricity by temperature difference. At the same time, the arc disk cold end releases heat to increase the temperature inside the storage tank, thereby preventing the temperature from being too low and deviating from the preset data; the arc disk hot end and the first plate-shaped cold end simultaneously form temperature difference power generation, and the arc disk hot end is intermittently opened, and the arc disk hot end absorbs heat, thereby preventing the temperature inside the storage tank from being too high and the natural gas from being released unevenly.

[0031] The present invention designs a multi-stage sealing component, including a sealing cover, a sealing ring, a sealing valve ball, etc. These components help ensure the sealing of the high-pressure pipe connection and avoid natural gas leakage or failure.

[0032] The cold air main and hot air main of the present invention transport cold and hot gases, and ensure the precise flow of cold and hot air through the gas transfer pipe system, effectively promoting the temperature control inside the storage tank; at the same time, heat can be recovered through external pipes, reducing the system's dependence on external energy; the design of the storage tank is modular, and the uniform temperature straight pipe and uniform temperature curved pipe help maintain the temperature balance of the internal gas and water, avoiding local overcooling or overheating problems; the circulating gas channel further enhances the control ability of gas flow and temperature balance, ensuring the stability of stored hydrates. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation of the present invention. In the accompanying drawings:

[0034] Figure 1 This is a schematic diagram of the overall structure of a natural gas hydrate high-pressure collection and storage device proposed by the present invention;

[0035] Figure 2 This is a schematic structural diagram of a storage rack for a natural gas hydrate high-pressure collection and storage device proposed by the present invention;

[0036] Figure 3 A cross-sectional view of a storage tank of a natural gas hydrate high-pressure collection and storage device proposed by the present invention;

[0037] Figure 4 A natural gas hydrate high-pressure collection and storage device proposed by the present invention Figure 3 A magnified view of point A;

[0038] Figure 5 A natural gas hydrate high-pressure collection and storage device proposed by the present invention Figure 3 Enlarge the B point;

[0039] Figure 6 A natural gas hydrate high-pressure collection and storage device proposed by the present invention Figure 3 Enlarge the C of the

[0040] Figure 7 A natural gas hydrate high-pressure collection and storage device proposed by the present invention Figure 3 Enlarge the D point;

[0041] Figure 8 This is a schematic structural diagram of the gas pump of a natural gas hydrate high-pressure collection and storage device proposed by the present invention.

[0042] In the figure: 1. Storage cabinet; 1.1. Hinge; 1.2. Double door panel; 1.3. Door handle; 2. Storage rack; 2.1. Air vent; 3. Storage tank; 3.1. First air inlet pipe; 3.2. Circulating air channel; 3.3. Temperature-averaging straight pipe; 3.4. Temperature-averaging curved pipe; 3.5. Recovery box; 4. Hot and cold components; 4.1. Hot box; 4.2. Semiconductor refrigeration unit; 4.3. Cold box; 4.4. Mounting rack; 4.5. Air pump; 4.6. Second Inlet pipe; 4.7, filter pipe; 4.8, third air inlet pipe; 4.9, first electric valve; 4.10, hot air main pipe; 4.11, hot air branch pipe; 4.12, second electric valve; 4.13, cold air main pipe; 4.14, cold air branch pipe; 4.15, third electric valve; 4.16, gas transfer pipe; 5, thermoelectric power generation recovery component; 6, high-pressure pipe; 7, sealing assembly; 7.1, sealing cover; 7.2, sealing ring; 7.3, sealing valve ball ; 7.4, sealing spring; 7.5, spring seat plate; 7.6, breathable arc ring; 7.7, sealing plate; 7.8, tension spring; 7.9, stop rod; 8, controller; 8.1, touch screen; 9, circular temperature difference power generation component; 9.1, arc disk cold end; 9.2, arc disk hot end; 9.3, temperature difference metal rod; 9.4, insulation layer; 9.5, temperature difference metal sleeve; 9.6, temperature difference connecting rod; 10, plate-shaped temperature difference power generation component; 10.1, first Plate-shaped cold end; 10.2, first plate-shaped hot end; 10.3, second plate-shaped cold end; 10.4, second plate-shaped hot end; 10.5, thermal conductive plate; 11, temperature difference assembly; 11.1, cold transfer box; 11.2, hot transfer box; 11.3, switching air pipe; 11.4, temperature sensor; 11.5, hot air inlet pipe; 11.6, cold air inlet pipe; 11.7, fourth electric air valve; 11.8, hot air exhaust pipe; 11.9, cold air exhaust pipe. DETAILED DESCRIPTION

[0043] The present invention will now be described in further detail with reference to the accompanying drawings, which are simplified schematic diagrams that illustrate the basic structure of the present invention in a schematic manner.

[0044] Please refer to Figures 1 to 8The present invention provides a high-pressure collection and storage device for natural gas hydrates, comprising a storage cabinet 1, a storage rack 2, a storage tank 3, a hot and cold assembly 4, a thermoelectric power generation recovery component 5, a high-pressure pipe 6, a sealing assembly 7, and a controller 8, wherein the storage rack 2 is fixedly mounted inside the storage cabinet 1, the storage tank 3 is fixedly mounted on four sides of the storage rack 2, a plurality of temperature detection accessories are arranged inside the storage tank 3, the hot and cold assembly 4 is fixedly mounted on the inner bottom of the storage cabinet 1, the thermoelectric power generation recovery component 5 is fixedly mounted on the storage tank 3, the thermoelectric power generation recovery component 5 is fixedly mounted inside the hot and cold assembly 4, the high-pressure pipe 6 is fixedly mounted on both sides of the top of the storage tank 3, the sealing assembly 7 is fixedly mounted inside the high-pressure pipe 6, and the controller 8 is fixedly mounted on the outer surface of the storage cabinet 1; the thermoelectric power generation recovery component 5 comprises a circular thermoelectric power generation component 9, a plate-shaped thermoelectric power generation component 10, and a thermoelectric component 11, wherein the circular thermoelectric power generation component 9 is fixedly mounted on the inner top of the storage tank 3, the plate-shaped thermoelectric power generation component 10 is fixedly mounted inside the hot and cold assembly 4, and the thermoelectric component 11 is fixedly mounted on the bottom of the storage tank 3.

[0045] Hinges 1.1 are fixedly provided on both sides of the front end of the storage cabinet 1, and a double-door panel 1.2 is rotatably provided at the front end of the storage cabinet 1. The double-door panel 1.2 is fixedly installed on the hinge 1.1, and a sliding door handle 1.3 is fixedly provided on the outer wall of the double-door panel 1.2; an air vent 2.1 is provided in the middle position of the storage rack 2; a touch screen 8.1 is fixedly provided on the outer wall of the controller 8, a first air inlet pipe 3.1 is fixedly provided on the top of the storage tank 3, a circulating air channel 3.2 is provided in the tank wall of the storage tank 3, a temperature-averaging straight pipe 3.3 is fixedly provided on the inner wall of the storage tank 3, a temperature-averaging curved pipe 3.4 is fixedly provided on the inner bottom of the storage tank 3, and a recovery box 3.5 is fixedly provided on the bottom of the storage tank 3.

[0046] Specifically, the hot and cold assembly 4 includes a hot box 4.1, a semiconductor refrigeration sheet group 4.2 and a cold box 4.3, wherein the bottom of the hot box 4.1 is fixedly mounted on the inner bottom of the storage cabinet 1, the bottom of the semiconductor refrigeration sheet group 4.2 is fixedly mounted on the top of the hot box 4.1, and the bottom of the cold box 4.3 is fixedly mounted on the top of the semiconductor refrigeration sheet group 4.2. The hot and cold assembly 4 also includes a mounting frame 4.4, an air pump 4.5, a second air inlet pipe 4.6, an air filter pipe 4.7, a third air inlet pipe 4.8 and a first electric air valve 4.9, wherein the bottom of the mounting frame 4.4 is fixedly mounted on the inner bottom of the storage cabinet 1, and the mounting frame 4.4 is fixedly mounted on the inner bottom of the storage cabinet 1. The top is fixedly sleeved on the semiconductor refrigeration plate group 4.2, the pump base of the air pump 4.5 is fixedly mounted on the inner bottom of the storage cabinet 1, one end of the second air inlet pipe 4.6 is fixedly mounted on the air pump 4.5, one end of the air filter pipe 4.7 is fixedly mounted on the other end of the second air inlet pipe 4.6, and the other end of the air filter pipe 4.7 extends out of the storage cabinet 1, one end of the third air inlet pipe 4.8 is fixedly mounted on the air pump 4.5, the other end of the third air inlet pipe 4.8 is fixedly mounted on the hot box 4.1 and the cold box 4.3, and the first electric air valve 4.9 is fixedly mounted on one end of the third air inlet pipe 4.8 close to the hot box 4.1 and the cold box 4.3.

[0047] The hot and cold assembly 4 further includes a hot air main pipe 4.10, a hot air branch pipe 4.11, a second electric gas valve 4.12, a cold air main pipe 4.13, a cold air branch pipe 4.14, a third electric gas valve 4.15, and a gas transfer pipe 4.16. One end of the hot air main pipe 4.10 is fixedly mounted on the hot box 4.1, and the other end of the hot air main pipe 4.10 extends out of the storage cabinet 1. One end of the hot air branch pipe 4.11 is fixedly mounted on the hot air main pipe 4.10, and the other end of the hot air branch pipe 4.11 is fixedly mounted on the bottom of the gas transfer pipe 4.16. Two second electric gas valves 4.12 are provided, and the two second electric gas valves 4.12 are fixedly mounted on the hot gas main pipe 4.10 and the hot gas branch pipe 4.11 respectively. One end of the cold gas main pipe 4.13 is fixedly mounted on the cold box 4.3. One end of the cold gas main pipe 4.13 is located in the storage cabinet 1. One end of the cold gas branch pipe 4.14 is fixedly mounted on the cold gas main pipe 4.13. The other end of the cold gas branch pipe 4.14 is fixedly mounted on the bottom of the air transfer pipe 4.16. The top of the air transfer pipe 4.16 is fixedly mounted on the first air inlet pipe 3.1.

[0048] More specifically, the sealing assembly 7 includes a sealing cover 7.1, a sealing ring 7.2, a sealing valve ball 7.3, a sealing spring 7.4 and a spring seat plate 7.5, wherein the sealing cover 7.1 is threadedly mounted on the top of the high-pressure pipe 6, the sealing ring 7.2 is fixedly mounted on the inner wall of the high-pressure pipe 6, the sealing valve ball 7.3 is fixedly mounted on the top of the sealing spring 7.4, the bottom of the sealing spring 7.4 is fixedly mounted on the spring seat plate 7.5, and the spring seat plate 7.5 is fixedly mounted on the inner wall of the high-pressure pipe 6. The sealing assembly 7 also includes a breathable arc ring 7.6, a sealing plate 7.7, a tension spring 7.8, a stop rod 7.9 and a switch valve 7.10, wherein the breathable arc ring 7.6 is fixedly mounted on the inner wall of the high-pressure pipe 6, the sealing plate 7.7 is fixedly mounted on one end of the tension spring 7.8, the other end of the tension spring 7.8 is fixedly mounted on the breathable arc ring 7.6, the bottom of the stop rod 7.9 is fixedly mounted on the sealing plate 7.7, and the switch valve 7.10 is fixedly mounted on the high-pressure pipe 6

[0049] More specifically, the circular temperature difference power generation component 9 includes an arc disk cold end 9.1 and an arc disk hot end 9.2. The inner wall of the arc disk cold end 9.1 is fixedly sleeved on the outer wall of the arc disk hot end 9.2. The circular temperature difference power generation component 9 includes a temperature difference metal rod 9.3, an insulating rubber layer 9.4, a temperature difference metal sleeve 9.5 and a temperature difference connecting rod 9.6. Among them, the outer wall of the temperature difference metal rod 9.3 is fixedly inserted into the arc disk hot end 9.2, the inner wall of the insulating rubber layer 9.4 is fixedly installed on the outer wall of the top of the temperature difference metal rod 9.3, the bottom of the temperature difference metal sleeve 9.5 is fixedly inserted into the arc disk cold end 9.1, the inner wall of the top of the temperature difference metal sleeve 9.5 is fixedly sleeved on the insulating rubber layer 9.4, and the temperature difference connecting rod 9.6 is fixedly installed on the top of the temperature difference metal sleeve 9.5.

[0050] More specifically, the plate-shaped thermoelectric power generation component 10 includes a first plate-shaped cold end 10.1 and a first plate-shaped hot end 10.2. The first plate-shaped cold end 10.1 is fixedly mounted on the inner top of the cold box 4.3, and the first plate-shaped hot end 10.2 is fixedly mounted on the inner bottom of the hot box 4.1. The plate-shaped thermoelectric power generation component 10 also includes a second plate-shaped cold end 10.3, a second plate-shaped hot end 10.4 and a thermal conduction plate 10.5. The second plate-shaped cold end 10.3 is fixedly mounted on the inside of the cold transfer box 11.1, and the second plate-shaped hot end 10.4 is fixedly mounted on the inside of the hot transfer box 11.2. The bottom of the thermal conduction plate 10.5 is fixedly mounted on the top of each of the first plate-shaped cold end 10.1, the first plate-shaped hot end 10.2, the second plate-shaped cold end 10.3 and the second plate-shaped hot end 10.4.

[0051] More specifically, the temperature difference assembly 11 includes a cold transfer box 11.1 and a hot transfer box 11.2. The cold transfer box 11.1 is fixedly mounted on the inner bottom of the recovery box 3.5, and the hot transfer box 11.2 is fixedly mounted on the inner top of the recovery box 3.5. The temperature difference assembly 11 includes a switching air pipe 11.3, a temperature sensor 11.4, a hot air transfer pipe 11.5, a cold air transfer pipe 11.6, a fourth electric air valve 11.7, a hot air transfer pipe 11.8, and a cold air transfer pipe 11.9. The top of the switching air pipe 11.3 is fixedly mounted on the bottom of the storage tank 3, the temperature sensor 11.4 is fixedly mounted on the switching air pipe 11.3, and one end of the hot air transfer pipe 11.5 is fixedly mounted on the storage tank 3. It is installed on the switching air pipe 11.3, the other end of the hot air inlet pipe 11.5 is fixedly installed on the heat transfer box 11.2, one end of the cold air inlet pipe 11.6 is fixedly installed on the switching air pipe 11.3, and the other end of the cold air inlet pipe 11.6 is fixedly installed on the cold transfer box 11.1. The fourth electric air valve 11.7 is fixedly installed on the hot air inlet pipe 11.5 and the cold air inlet pipe 11.6, one end of the hot air exhaust pipe 11.8 is fixedly installed on the heat transfer box 11.2, and the other end of the hot air exhaust pipe 11.8 extends out of the storage cabinet 1, one end of the cold air exhaust pipe 11.9 is fixedly installed on the cold transfer box 11.1, and the other end of the cold air exhaust pipe 11.9 is located inside the storage cabinet 1.

[0052] A certain amount of water is stored in the storage tank 3 through external equipment, and the storage tank 3 is cooled to below 0°C. The low-temperature water and high-pressure natural gas, mainly methane, are mixed; when the water and natural gas reach the appropriate temperature and pressure conditions, the natural gas molecules are surrounded by water molecules, forming a stable hydrate structure; hydrates are a crystalline structure in which water molecules are bound to natural gas molecules through hydrogen bonds to form a solid solid. Generally, the formation temperature of hydrates is below 0°C and the pressure needs to be relatively high, usually above 10MPa; once hydrates are formed, the device will continue to maintain a low-temperature and high-pressure environment to ensure the stable existence of the hydrates; during this process, the natural gas is "trapped" in the hydrates and can be released by thawing or reducing the pressure when needed; during the storage process, the hydrate structure can effectively prevent the leakage or evaporation of natural gas, while also enabling the recovery and utilization of natural gas at low pressure.

[0053] Unscrew the sealing cover 7.1 and connect the externally connected water pipe and natural gas pipe to the high-pressure pipe 6. The externally connected water pipe and natural gas pipe press down the sealing valve ball 7.3, compressing the sealing spring 7.4. The water pressure flushes the sealing plate 7.7, and the sealing plate 7.7 stretches the tension spring 7.8. After the water enters the storage tank 3 and reaches a certain equivalent, remove the externally connected water pipe. The sealing valve ball 7.3 and the sealing plate 7.7 return to the sealed state under the action of the sealing spring 7.4 and the tension spring 7.8.

[0054] The semiconductor refrigeration plate assembly 4.2 is activated. The cooling end of the semiconductor refrigeration plate assembly 4.2 cools the cold box 4.3, while the heating end of the semiconductor refrigeration plate assembly 4.2 heats the hot box 4.1. The air pump 4.5 is activated. The air pump 4.5 draws air from the outside through the second air inlet pipe 4.6 and the air filter pipe 4.7. The air is then delivered to the hot box 4.1 and the cold box 4.3 through the third air inlet pipe 4.8 and the first electric air valve 4.9. The temperature of the hot box 4.1 and the cold box 4.3 affects the temperature of the air, and the flow of air cools or heats the storage tank 3.

[0055] When low-temperature water and high-pressure natural gas are mixed to form hydrates, the interior of the storage tank 3 needs to be refrigerated to reduce the temperature inside the storage tank 3 to below 0°C. The hot air main 4.10 and the second electric air valve 4.12 of the hot box 4.1 are opened to discharge heat out of the storage cabinet 1. Heat can be collected through external connecting pipes for heat collection. The cold air main 4.13, the cold air branch pipe 4.14 and the third electric air valve 4.15 of the cold box 4.3 are opened to allow cold air to pass through the cold air main 4.13, the cold air branch pipe 4.14, the air transfer pipe 4.16 and the first air inlet pipe 3.1 into the circulating air channel 3.2, the temperature averaging straight pipe 3.3 and the temperature averaging curved pipe 3.4 to quickly cool the water inside the storage tank 3. The cold air flows from the circulating air channel 3.2 to the switching air pipe 11.3, and the temperature sensor 11.4 detects the wind. The temperature of the force is determined, and the corresponding pipeline opens the fourth electric air valve 11.7, and the cold air enters the cold transfer box 11.1 through the air-cooling inlet pipe 11.6, and then is transported to the storage cabinet 1 through the air-cooling exhaust pipe 11.9 to cool the storage cabinet 1; a large temperature difference is formed between the first plate-shaped hot end 10.2 in the hot box 4.1 and the second plate-shaped cold end 10.3 in the cold transfer box 11.1, thereby generating electricity by temperature difference. The first plate-shaped hot end 10.2 and the second plate-shaped cold end 10.3 generate electricity through the thermoelectric module in the controller 8, which can be recovered; when the cold air accurately controls the temperature inside the storage tank 3, the arc disk cold end 9.1 is intermittently opened, and the arc disk cold end 9.1 and the first plate-shaped hot end 10.2 cooperate to generate electricity by temperature difference. At the same time, the arc disk cold end 9.1 releases heat to increase the temperature inside the storage tank 3.

[0056] By connecting the external natural gas pipeline with the high-pressure pipe 6, natural gas is injected into the storage tank 3 to increase the gas pressure of the storage tank 3, promote the natural gas molecules to be surrounded by water molecules, and form a stable hydrate structure. After completion, the connection between the external natural gas pipeline and the high-pressure pipe 6 is removed.

[0057] When the hydrate in the storage tank 3 is kept stable, cold air is continuously supplied to the interior of the storage tank 3 .

[0058] When the hydrates are thawed and the natural gas is released, the external gas connection pipe is connected to the high-pressure pipe 6, releasing the natural gas in the storage tank 3 and delivering hot air into the storage tank 3. The hot air is uniformly heated inside the storage tank 3 through the heat box 4.1, the hot gas main pipe 4.10, the hot gas branch pipe 4.11, the second electric gas valve 4.12, the gas transfer pipe 4.16, the first air inlet pipe 3.1, the circulating gas channel 3.2, the uniform temperature straight pipe 3.3 and the uniform temperature curved pipe 3.4. The third electric gas valve 4.15 of the cold air branch pipe 4.14 is closed, and the cold air enters the storage cabinet 1 through the cold air main pipe 4.13, cooling the storage cabinet 1. The storage tank 3 is heated, and the hydrates can continuously decompose and release natural gas. The hot air enters the switching air pipe 11.3 from the circulating air channel 3.2, the temperature sensor 11.4 detects the air temperature, the conversion air heat inlet pipe 11.5 is opened, and the hot air enters the conversion air heat exhaust pipe 11.8, which discharges the heat into the storage cabinet 1. The conversion air heat exhaust pipe 11.8 is connected to the external pipeline to collect heat; the first plate-shaped cold end 10.1 of the cold box 4.3 and the second plate-shaped hot end 10.4 of the heat transfer box 11.2 form temperature difference power generation; the arc disk hot end 9.2 and the first plate-shaped cold end 10.1 simultaneously form temperature difference power generation, and the arc disk hot end 9.2 is intermittently opened to absorb heat to prevent the temperature in the storage tank 3 from being too high and the natural gas release from being uneven.

[0059] The invention adopts thermoelectric power generation technology, which generates electricity between the inside and outside of the storage tank 3 through the temperature difference between the hot box 4.1 and the cold box 4.3; the specific implementation method is to use the temperature difference between the arc disk cold end 9.1, the arc disk hot end 9.2, the first plate-shaped cold end 10.1, the first plate-shaped hot end 10.2, the second plate-shaped cold end 10.3 and the second plate-shaped hot end 10.4. These elements convert the temperature difference into electrical energy for recovery through thermoelectric modules; this technology can achieve energy recovery between low-temperature and high-temperature environments through thermoelectric power generation modules, greatly improving energy utilization.

[0060] The invention controls the flow of air through the semiconductor refrigeration plate group 4.2 and the air pump 4.5 in the hot and cold components 4, thereby accurately regulating the temperature in the storage tank 3 to ensure the stable formation and storage of hydrates; by adjusting the temperature of the hot box 4.1 and the cold box 4.3, it not only helps to maintain the stability of the hydrates, but also ensures that the gas is captured and released under high pressure.

[0061] The invention designs a multi-stage sealing assembly 7, including a sealing cover 7.1, a sealing ring 7.2, a sealing valve ball 7.3, etc. These components help ensure the sealing of the connection of the high-pressure pipe 6 to avoid natural gas leakage or failure.

[0062] During the storage process of hydrates, the device precisely controls temperature and pressure to ensure the stable existence of hydrates in the storage tank 3. When hydrates are formed, natural gas molecules are surrounded by water molecules and solidified into crystals, thereby preventing gas leakage. During release, natural gas is released from the hydrates through temperature control and the action of external gas pipelines. This method improves the storage density and safety of natural gas.

[0063] This device utilizes the cold air main pipe 4.13 and the hot air main pipe 4.10 to transport the cold and hot gases, and ensures the precise flow of cold and hot air through the gas transfer pipe 4.16 system, effectively promoting the temperature control inside the storage tank 3; at the same time, heat can be recovered through external pipes, reducing the system's dependence on external energy.

[0064] The design of the storage tank 3 is modular. The temperature-equalizing straight pipe 3.3 and the temperature-equalizing curved pipe 3.4 help maintain the temperature balance of the internal gas and water, avoiding local overcooling or overheating problems; the circulating gas channel 3.2 further enhances the control ability of gas flow and temperature balance, ensuring the stability of stored hydrates.

[0065] The controller 8 works in conjunction with the built-in touch screen 8.1 to monitor the system's operating status in real time, including data such as the temperature and pressure of the storage tank 3, and make automatic adjustments. This design enables intelligent control of the system, making the storage and release process of natural gas hydrates more efficient and accurate.

[0066] The above description is only a preferred specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any technician familiar with the technical field, within the technical scope disclosed by the present invention, who makes equivalent replacements or changes based on the technical solution and inventive concept of the present invention, should be covered by the scope of protection of the present invention.

Claims

1. A natural gas hydrate high-pressure collection and storage device, characterized in that: The invention comprises a storage cabinet (1), a storage rack (2), a storage tank (3), a hot and cold assembly (4), a thermoelectric power generation recovery component (5), a high-pressure pipe (6), a sealing assembly (7) and a controller (8), wherein the storage rack (2) is fixedly mounted inside the storage cabinet (1), the storage tank (3) is fixedly mounted on four sides of the storage rack (2), the hot and cold assembly (4) is fixedly mounted on the inner bottom of the storage cabinet (1), the thermoelectric power generation recovery component (5) is fixedly mounted on the storage tank (3), the thermoelectric power generation recovery component (5) is fixedly mounted inside the hot and cold assembly (4), the high-pressure pipe (6) is fixedly mounted on both sides of the top of the storage tank (3), the sealing assembly (7) is fixedly mounted inside the high-pressure pipe (6), and the controller (8) is fixedly mounted on the outer surface of the storage cabinet (1); The hot and cold assembly (4) comprises a hot box (4.1), a semiconductor refrigeration fin group (4.2) and a cold box (4.3), wherein the bottom of the hot box (4.1) is fixedly mounted on the inner bottom of the storage cabinet (1), the bottom of the semiconductor refrigeration fin group (4.2) is fixedly mounted on the top of the hot box (4.1), and the bottom of the cold box (4.3) is fixedly mounted on the top of the semiconductor refrigeration fin group (4.2); The thermoelectric power generation recovery component (5) comprises a circular thermoelectric power generation component (9), a plate-shaped thermoelectric power generation component (10) and a thermoelectric component (11), wherein the circular thermoelectric power generation component (9) is fixedly mounted on the inner top of the storage tank (3), the plate-shaped thermoelectric power generation component (10) is fixedly mounted in the cooling and heating component (4), and the thermoelectric component (11) is fixedly mounted on the bottom of the storage tank (3); The circular temperature difference power generation component (9) comprises an arc disk cold end (9.1) and an arc disk hot end (9.2), wherein the inner wall of the arc disk cold end (9.1) is fixedly sleeved on the outer wall of the arc disk hot end (9.2); The plate-shaped temperature difference power generation assembly (10) comprises a first plate-shaped cold end (10.1) and a first plate-shaped hot end (10.2); the first plate-shaped cold end (10.1) is fixedly mounted on the inner top of a cold box (4.3); and the first plate-shaped hot end (10.2) is fixedly mounted on the inner bottom of a hot box (4.1).

2. A natural gas hydrate high-pressure collection and storage device according to claim 1, characterized in that: Both sides of the front end of the storage cabinet (1) are fixedly provided with hinges (1.1); the front end of the storage cabinet (1) is rotatably provided with a split door panel (1.2); the split door panel (1.2) is fixedly mounted on the hinges (1.1); and a sliding door handle (1.3) is fixedly provided on the outer wall of the split door panel (1.2); A ventilation hole (2.1) is provided in the middle of the storage rack (2); A touch screen (8.1) is fixedly provided on the outer wall of the controller (8).

3. The natural gas hydrate high-pressure collection and storage device according to claim 1, characterized in that: A first air inlet pipe (3.1) is fixedly provided on the top of the storage tank (3), a circulating air channel (3.2) is provided in the tank wall of the storage tank (3), a temperature-averaging straight pipe (3.3) is fixedly provided on the inner wall of the storage tank (3), a temperature-averaging curved pipe (3.4) is fixedly provided on the inner bottom of the storage tank (3), and a recovery box (3.5) is fixedly provided on the bottom of the storage tank (3); The temperature difference component (11) comprises a cold transfer box (11.1) and a hot transfer box (11.2); the cold transfer box (11.1) is fixedly mounted on the inner bottom of the recovery box (3.5); and the hot transfer box (11.2) is fixedly mounted on the inner top of the recovery box (3.5).

4. The natural gas hydrate high-pressure collection and storage device according to claim 1, characterized in that: The cooling and heating component (4) further comprises a mounting frame (4.4), an air pump (4.5), a second air inlet pipe (4.6), an air filter pipe (4.7), a third air inlet pipe (4.8) and a first electric air valve (4.9), wherein the bottom of the mounting frame (4.4) is fixedly mounted on the inner bottom of the storage cabinet (1), the top of the mounting frame (4.4) is fixedly sleeved on the semiconductor refrigeration plate group (4.2), the pump seat of the air pump (4.5) is fixedly mounted on the inner bottom of the storage cabinet (1), and one end of the second air inlet pipe (4.6) is fixedly mounted on the The air pump (4.5) is fixedly mounted on one end of the air filter pipe (4.7) on the other end of the second air inlet pipe (4.6), and the other end of the air filter pipe (4.7) extends out of the storage cabinet (1). One end of the third air inlet pipe (4.8) is fixedly mounted on the air pump (4.5), and the other end of the third air inlet pipe (4.8) is fixedly mounted on the hot box (4.1) and the cold box (4.3). The first electric air valve (4.9) is fixedly mounted on one end of the third air inlet pipe (4.8) close to the hot box (4.1) and the cold box (4.3).

5. The natural gas hydrate high-pressure collection and storage device according to claim 4, characterized in that: The hot and cold assembly (4) further comprises a hot air main pipe (4.10), a hot air branch pipe (4.11), a second electric gas valve (4.12), a cold air main pipe (4.13), a cold air branch pipe (4.14), a third electric gas valve (4.15) and a gas transfer pipe (4.16), wherein one end of the hot air main pipe (4.10) is fixedly mounted on the heat box (4.1), and the other end of the hot air main pipe (4.10) extends out of the storage cabinet (1); one end of the hot air branch pipe (4.11) is fixedly mounted on the hot air main pipe (4.10), and the other end of the hot air branch pipe (4.11) is fixedly mounted on the bottom of the gas transfer pipe (4.16). Two second electric gas valves (4.12) are provided, and the two second electric gas valves (4.12) are fixedly mounted on the hot gas main pipe (4.10) and the hot gas branch pipe (4.11), respectively. One end of the cold gas main pipe (4.13) is fixedly mounted on the cold box (4.3), one end of the cold gas main pipe (4.13) is located in the storage cabinet (1), one end of the cold gas branch pipe (4.14) is fixedly mounted on the cold gas main pipe (4.13), the other end of the cold gas branch pipe (4.14) is fixedly mounted on the bottom of the gas transfer pipe (4.16), and the top of the gas transfer pipe (4.16) is fixedly mounted on the first air inlet pipe (3.1).

6. The natural gas hydrate high-pressure collection and storage device according to claim 1, characterized in that: The circular temperature difference power generation assembly (9) comprises a temperature difference metal rod (9.3), an insulating rubber layer (9.4), a temperature difference metal sleeve (9.5) and a temperature difference connecting rod (9.6), wherein the outer wall of the temperature difference metal rod (9.3) is fixedly plugged into the hot end (9.2) of the arc disk, the inner wall of the insulating rubber layer (9.4) is fixedly mounted on the outer wall of the top of the temperature difference metal rod (9.3), the bottom of the temperature difference metal sleeve (9.5) is fixedly plugged into the cold end (9.1) of the arc disk, the inner wall of the top of the temperature difference metal sleeve (9.5) is fixedly sleeved on the insulating rubber layer (9.4), and the temperature difference connecting rod (9.6) is fixedly mounted on the top of the temperature difference metal sleeve (9.5).

7. The natural gas hydrate high-pressure collection and storage device according to claim 1, characterized in that: The plate-shaped temperature difference power generation assembly (10) further comprises a second plate-shaped cold end (10.3), a second plate-shaped hot end (10.4) and a thermal conductive plate (10.5); the second plate-shaped cold end (10.3) is fixedly mounted inside the cold transfer box (11.1); the second plate-shaped hot end (10.4) is fixedly mounted inside the thermal transfer box (11.2); and the bottom of the thermal conductive plate (10.5) is fixedly mounted on the tops of the first plate-shaped cold end (10.1), the first plate-shaped hot end (10.2), the second plate-shaped cold end (10.3) and the second plate-shaped hot end (10.4).

8. The natural gas hydrate high-pressure collection and storage device according to claim 1, characterized in that: The temperature difference component (11) comprises a switching air pipe (11.3), a temperature sensor (11.4), a heat transfer air inlet pipe (11.5), a cold transfer air inlet pipe (11.6), a fourth electric air valve (11.7), a heat transfer air exhaust pipe (11.8) and a cold transfer air exhaust pipe (11.9), wherein the top of the switching air pipe (11.3) is fixedly mounted on the bottom of the storage tank (3), the temperature sensor (11.4) is fixedly mounted on the switching air pipe (11.3), one end of the heat transfer air inlet pipe (11.5) is fixedly mounted on the switching air pipe (11.3), and the other end of the heat transfer air inlet pipe (11.5) is fixedly mounted on the heat transfer box (11.2). One end of the air-cooling inlet pipe (11.6) is fixedly mounted on the switching air pipe (11.3), the other end of the air-cooling inlet pipe (11.6) is fixedly mounted on the cold transfer box (11.1), the fourth electric air valve (11.7) is fixedly mounted on the air-heating inlet pipe (11.5) and the air-cooling inlet pipe (11.6), one end of the air-heating exhaust pipe (11.8) is fixedly mounted on the hot transfer box (11.2), the other end of the air-heating exhaust pipe (11.8) extends out of the storage cabinet (1), one end of the air-cooling exhaust pipe (11.9) is fixedly mounted on the cold transfer box (11.1), and the other end of the air-cooling exhaust pipe (11.9) is located in the storage cabinet (1).

9. The natural gas hydrate high-pressure collection and storage device according to claim 1, characterized in that: The sealing assembly (7) comprises a sealing cover (7.1), a sealing ring (7.2), a sealing valve ball (7.3), a sealing spring (7.4) and a spring seat plate (7.5), wherein the sealing cover (7.1) is threadedly mounted on the top of the high-pressure pipe (6), the sealing ring (7.2) is fixedly mounted on the inner wall of the high-pressure pipe (6), the sealing valve ball (7.3) is fixedly mounted on the top of the sealing spring (7.4), the bottom of the sealing spring (7.4) is fixedly mounted on the spring seat plate (7.5), and the spring seat plate (7.5) is fixedly mounted on the inner wall of the high-pressure pipe (6).

10. The natural gas hydrate high-pressure collection and storage device according to claim 9, characterized in that: The sealing assembly (7) further comprises a breathable arc ring (7.6), a sealing plate (7.7), a tension spring (7.8), a stop rod (7.9) and a switch valve (7.10), wherein the breathable arc ring (7.6) is fixedly mounted on the inner wall of the high-pressure pipe (6), the sealing plate (7.7) is fixedly mounted on one end of the tension spring (7.8), the other end of the tension spring (7.8) is fixedly mounted on the breathable arc ring (7.6), the bottom of the stop rod (7.9) is fixedly mounted on the sealing plate (7.7), and the switch valve (7.10) is fixedly mounted on the high-pressure pipe (6).

Images