Equipment for efficiently gasifying and pressurizing liquefied natural gas

Abstract

The utility model discloses equipment for efficient gasification and pressurization of liquefied natural gas, which relates to the technical field of gasification and pressurization equipment and comprises a base, one end of the top of the base is fixedly connected with a gasification tank, and the side wall of one end of the gasification tank is fixedly connected with a first heat source inlet end. The side wall of one end of the gasification tank is fixedly connected with a first heat source inlet end, the side wall of the other end of the gasification tank is fixedly connected with a first heat source outlet end, the side walls of the first heat source inlet end and the first heat source outlet end are fixedly connected with first electric valves, and the outer wall of the gasification tank is fixedly connected with a heating sleeve device. On the basis that efficient heat exchange is achieved and gasification efficiency is improved, airflow impact force is reduced through the buffer mechanism, and therefore the problems that in the gasification process of existing liquefied natural gas gasification pressurization equipment, the heat exchange gasification efficiency is low, and the pressurization equipment is prone to being damaged due to the lack of a buffer structure are solved.

Description

Technical Field

[0001] This utility model relates to the technical field of gasification boosting equipment, specifically to a device for efficient gasification boosting of liquefied natural gas. Background Technology

[0002] Natural gas refers to all gases that exist naturally in nature, including gases formed by various natural processes in the atmosphere, hydrosphere, and lithosphere (including oilfield gas, gas field gas, mud volcano gas, coalbed methane, and biogenic gas, etc.). The main use of natural gas is as fuel. It can also be used to manufacture carbon black, chemicals, and liquefied petroleum gas. Propane and butane produced from natural gas are important raw materials for modern industry. Natural gas is mainly composed of a mixture of gaseous low-molecular-weight hydrocarbons and non-hydrocarbon gases.

[0003] The heating and gasification process in existing liquefied natural gas (LNG) vaporization and pressurization equipment is relatively slow. On the one hand, the heat exchange structure of the vaporizer is not optimized enough, resulting in low heat transfer efficiency between LNG and the heating medium. The amount of LNG vaporized per unit time is small, which cannot meet the growing gas demand. On the other hand, existing equipment lacks an effective buffer mechanism during the gasification process. In the pressurization stage, since the vaporized natural gas enters the pressurization equipment directly, and the gas flow and pressure may fluctuate during the gasification process, the lack of a buffer mechanism causes these unstable airflows to directly impact the pressurization equipment, such as the compressor and other key components. Frequent impacts will cause wear on the compressor impeller, seals, etc., reduce the service life of the equipment, and increase maintenance costs. At the same time, unstable airflow may also cause problems such as increased vibration and surge during compressor operation, and in severe cases, it may even cause equipment failure, affecting the normal and stable operation of the LNG vaporization and pressurization equipment. Utility Model Content

[0004] In view of the problems existing in the above-mentioned equipment for efficient gasification and pressurization of liquefied natural gas, this utility model is proposed.

[0005] Therefore, the purpose of this utility model is to provide a device for efficient gasification and pressurization of liquefied natural gas, which solves the problems of slow heat exchange and gasification efficiency in existing liquefied natural gas gasification and pressurization equipment during the gasification process, and the lack of a buffer structure that easily damages the pressurization equipment.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a device for efficient gasification and pressurization of liquefied natural gas, comprising a base, a gasification tank fixedly connected to one end of the top of the base, an inlet fixedly connected to one side wall of the gasification tank, an outlet fixedly connected to the other side wall of the gasification tank, a first electric valve fixedly connected to the side walls of both the inlet and outlet ends, and a heating sleeve device fixedly connected to the outer wall of the gasification tank;

[0007] A sealing cover is fixedly connected to the top of the gasification tank, a U-shaped connecting chamber is fixedly connected to the top of the sealing cover, and a heat exchange grid plate device is fixedly connected to the bottom of the sealing cover. The top of the heat exchange grid plate device passes through the sealing cover and is fixedly connected to the bottom of both ends of the U-shaped connecting chamber. A high-efficiency compressor is fixedly connected to the top of the base through a snap-fit ​​limiting mechanism. Buffer chambers are fixedly connected to both the input and output ends of the high-efficiency compressor. A connecting mechanism is provided between the top of one of the buffer chambers and a first electric valve, and a second electric valve is fixedly connected to the bottom of the other buffer chamber. Spiral buffer chambers are opened inside the cavities of both buffer chambers. An air-loving coating is provided inside the cavity of the gasification tank.

[0008] Preferably, the locking and limiting mechanism includes a locking seat, a locking plate, a limiting screw hole, and a limiting bolt. The top two ends of the base are fixedly connected to locking seats, and the side walls of the high-efficiency compressor are fixedly connected to locking plates. The locking plates at both ends are inserted into the corresponding locking seats. The surfaces of the locking plates at both ends are provided with limiting screw holes. The side walls of the locking seats at both ends are provided with openings to insert limiting bolts. The limiting bolts at both ends are threadedly connected to the corresponding limiting screw holes.

[0009] Preferably, the connection mechanism includes a threaded pipe end, a delivery hose, and a sealing threaded sleeve. The top output end of one of the buffer chambers is fixedly connected to the threaded pipe end, the output end of one of the first electric valves is fixedly connected to the delivery hose, and the other end of the delivery hose is fixedly connected to the sealing threaded sleeve, which is threadedly connected to the threaded pipe end.

[0010] Preferably, a first heat source inlet is fixedly connected to one end of the side wall of the heating sleeve device, and a first heat source outlet is fixedly connected to the other end of the side wall of the heating sleeve device.

[0011] Furthermore, a second heat source inlet is fixedly connected to one side wall of the U-shaped connecting chamber, and a second heat source outlet is fixedly connected to the other side wall of the U-shaped connecting chamber.

[0012] Preferably, the heat exchange grid plate device includes an inlet hollow grid plate, a connecting pipe fixedly connected to the bottom of the inlet hollow grid plate, and an outlet hollow grid plate fixedly connected to the other end of the connecting pipe.

[0013] The technical effects and advantages provided by this utility model in the above technical solution are as follows:

[0014] 1. This utility model utilizes a heat exchange grid plate device installed inside the gasification tank, which is uniquely connected to the U-shaped connecting chamber. Combined with a heating jacket device, it greatly expands the contact area between liquefied natural gas and the heating medium, ensuring uniform heat distribution. The gas-loving coating reduces the gas-liquid interface resistance, significantly increasing the gasification rate per unit time, meeting the rapidly growing gas demand, and efficiently completing the gasification process.

[0015] 2. This utility model utilizes buffer chambers located at both ends of a high-efficiency compressor. Through the internal spiral buffer cavity, it buffers unstable airflow at the intake end and stabilizes compressed airflow at the output end, avoiding increased compressor vibration and surge problems, ensuring stable operation, and significantly improving the overall operational stability and reliability of the equipment.

[0016] 3. This utility model utilizes a snap-fit ​​limiting mechanism consisting of a snap-fit ​​seat, a snap-fit ​​plate, and limiting bolts to enable convenient installation and disassembly of the high-efficiency compressor. The connection mechanism facilitates the connection and separation of components through the threaded pipe end, the delivery hose, and the sealing threaded pipe sleeve, which is convenient for equipment inspection and maintenance and ensures the continuous and good operation of the equipment. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in this utility model. For those skilled in the art, other drawings can be obtained based on these drawings.

[0018] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0019] Figure 2 This is a front structural cross-sectional view of the present invention;

[0020] Figure 3 This is a side structural sectional view of the present invention;

[0021] Figure 4 For the present utility model Figure 2 Enlarged diagram of part A in the image.

[0022] Explanation of reference numerals in the attached figures:

[0023] 1. Base; 2. Gasification tank; 3. Inlet end; 4. Outlet end; 5. First electric valve; 6. Heating jacket device; 7. Sealing cover plate; 8. U-shaped connecting chamber; 9. Heat exchange grating plate device; 10. High-efficiency compressor; 11. Buffer chamber; 12. Second electric valve; 13. Spiral buffer chamber; 14. Snap-fit ​​seat; 15. Snap-fit ​​plate; 16. Limiting screw hole; 17. Limiting bolt; 18. Threaded pipe end; 19. Delivery hose; 20. Sealing threaded pipe sleeve; 21. First heat source inlet end; 22. First heat source outlet end; 23. Second heat source inlet end; 24. Second heat source outlet end; 25. Inlet hollow grating plate; 26. Connecting pipe; 27. Outlet hollow grating plate. Detailed Implementation

[0024] To enable those skilled in the art to better understand the technical solution of this utility model, the present utility model will be further described in detail below with reference to the accompanying drawings.

[0025] The figures disclosed in this utility model embodiment are of this utility model.

[0026] This utility model provides, for example Figure 1-4 The device shown is for efficient vaporization and pressurization of liquefied natural gas, including a base 1, a vaporization tank 2 fixedly connected to one end of the top of the base 1, an inlet end 3 fixedly connected to one side wall of the vaporization tank 2, an outlet end 4 fixedly connected to the other side wall of the vaporization tank 2, a first electric valve 5 fixedly connected to the side walls of both the inlet end 3 and the outlet end 4, and a heating jacket device 6 fixedly connected to the outer wall of the vaporization tank 2.

[0027] A sealing cover plate 7 is fixedly connected to the top of the gasification tank 2. A U-shaped connecting chamber 8 is fixedly connected to the top of the sealing cover plate 7. A heat exchange grid plate device 9 is fixedly connected to the bottom of the sealing cover plate 7. The top of the heat exchange grid plate device 9 passes through the sealing cover plate 7 and is fixedly connected to the bottom of both ends of the U-shaped connecting chamber 7. A high-efficiency compressor 10 is fixedly connected to the top of the base 1 via a snap-fit ​​limiting mechanism. Buffer chambers 11 are fixedly connected to both the input and output ends of the high-efficiency compressor 10. A connecting mechanism is provided between the top of one buffer chamber 11 and the first electric valve 5. A second electric valve 12 is fixedly connected to the bottom of the other buffer chamber 11. Spiral buffer chambers 1 are formed inside the cavities of both buffer chambers 11. 3. The cavity of the vaporization tank 2 is equipped with a gas-loving coating. A heat exchange grid plate device 9 is installed inside the vaporization tank 2 and is fixedly connected to the bottom of both ends of the U-shaped connecting chamber 8 through the sealing cover plate 7. The grid plate structure greatly increases the contact area between the liquefied natural gas and the heating medium, allowing heat to be transferred to the liquefied natural gas more efficiently. Combined with the external heating jacket device 6, this accelerates the vaporization process, enabling a more uniform and widespread distribution of heat within the vaporization tank, reducing heat exchange dead zones, and effectively increasing the amount of liquefied natural gas vaporized per unit time to meet rapidly growing gas demand. The gas-loving coating inside the vaporization tank 2 has a special affinity for gas molecules during the liquefied natural gas vaporization process. Force can reduce the surface tension of the gas-liquid interface, making it easier for natural gas molecules produced by gasification to detach from the liquid and enter the gas phase space, thus improving the overall gasification efficiency of the equipment. Utilizing buffer chambers 11 located at both the input and output ends of the high-efficiency compressor 10, each buffer chamber 11 has a spiral buffer chamber 13. Before the gasified natural gas enters the booster equipment, it first passes through the spiral buffer chamber 13 of the buffer chamber 11. The installation of buffer chambers 11 at both ends not only buffers the unstable airflow at the inlet end but also stabilizes the airflow at the compressor output end. By further buffering the compressed gas, problems such as increased compressor vibration and surge caused by unstable output airflow are avoided. This design ensures that the high-efficiency compressor 10 operates under stable conditions, improving the overall stability and reliability of the liquefied natural gas vaporization booster equipment. The design utilizes a locking and limiting mechanism and a connecting mechanism to facilitate the installation and disassembly of the booster components for maintenance. The first electric valve 5 at both ends controls the sealing of the vaporization tank 2, while the second electric valve 12 seals the output of the high-efficiency compressor 10. Opening the valve allows compressed gas to flow, thus solving the problems of slow heat exchange and vaporization efficiency in existing liquefied natural gas vaporization booster equipment, and the lack of a buffer structure that easily damages the booster equipment.

[0028] To facilitate the installation and disassembly of the booster components for maintenance, such as Figure 1 and 2As shown, the snap-fit ​​limiting mechanism includes a snap-fit ​​seat 14, a snap-fit ​​plate 15, a limiting screw hole 16, and a limiting bolt 17. Snap-fit ​​seats 14 are fixedly connected to both ends of the top of the base 1. Snap-fit ​​plates 15 are fixedly connected to the side walls of both ends of the high-efficiency compressor 10. The snap-fit ​​plates 15 at both ends are inserted into the corresponding snap-fit ​​seats 14. Limiting screw holes 16 are formed on the surface of the snap-fit ​​plates 15 at both ends. Limiting bolts 17 are inserted into the side walls of the snap-fit ​​seats 14 through openings. The limiting bolts 17 at both ends are threadedly connected to the corresponding limiting screw holes 16. By using the snap-fit ​​limiting mechanism composed of snap-fit ​​seats 14, snap-fit ​​plates 15, limiting screw holes 16, and limiting bolts 17, the snap-fit ​​plates 15 at both ends are inserted into the snap-fit ​​seats 14 at both ends for installation and positioning. The limiting bolts 17 at both ends are threadedly connected to the corresponding limiting screw holes 16, thereby limiting and fixing the compressor components after positioning and installation. This facilitates the installation, disassembly, and maintenance of the compressor components.

[0029] To facilitate installation, connection, and disassembly with the booster assembly, such as Figure 1 , 2 As shown in Figure 4, the connecting mechanism includes a threaded pipe end 18, a delivery hose 19, and a sealing threaded pipe sleeve 20. The top output end of one of the buffer chambers 11 is fixedly connected to the threaded pipe end 18, and the output end of one of the first electric valves 5 is fixedly connected to the delivery hose 19. The other end of the delivery hose 19 is fixedly connected to the sealing threaded pipe sleeve 20, which is threadedly connected to the threaded pipe end 18. By using the connecting mechanism consisting of the threaded pipe end 18, the delivery hose 19, and the sealing threaded pipe sleeve 20, and by threading the sealing threaded pipe sleeve 20 to the threaded pipe end 18, it is easy to install and connect, and also easy to rotate, disassemble, and separate the two parts, which facilitates the maintenance of the pressurization component.

[0030] To facilitate the connection of the heating jacket device 6 to the heat source for entry and exit, such as Figure 1 and 3 As shown, a first heat source inlet end 21 is fixedly connected to one end of the side wall of the heating sleeve device 6, and a first heat source outlet end 22 is fixedly connected to the other end of the side wall of the heating sleeve device 6. By utilizing the first heat source inlet end 21 and the first heat source outlet end 22, it is convenient to connect the heating sleeve device 6 to the heat source inlet and outlet.

[0031] To facilitate the connection of the U-shaped connection compartment 7 to a heat source for heat intake and exhaust, such as Figure 1-3 As shown, a second heat source inlet 23 is fixedly connected to one side wall of the U-shaped connecting chamber 7, and a second heat source outlet 24 is fixedly connected to the other side wall of the U-shaped connecting chamber 7. The second heat source inlet 23 and the second heat source outlet 24 facilitate the connection of heat sources for heat source entry and exit.

[0032] To achieve efficient internal heat exchange, such as Figure 2 and 3As shown, the heat exchange grid plate device 9 includes an inlet hollow grid plate 25, a connecting pipe 26 fixedly connected to the bottom of the inlet hollow grid plate 25, and an outlet hollow grid plate 27 fixedly connected to the other end of the connecting pipe 26. By using the heat exchange grid plate device 9 composed of the inlet hollow grid plate 25, the heat source enters through the inlet hollow grid plate 25 and flows through the connecting pipe 26 to the outlet hollow grid plate 27, and finally exits through the U-shaped connecting chamber 7. During the flow process, the grid plate can increase the contact area with liquefied natural gas and improve the gasification efficiency, thereby achieving efficient internal heat exchange.

[0033] The foregoing description only illustrates certain exemplary embodiments of the present invention. Undoubtedly, those skilled in the art can modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the above drawings and descriptions are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. A device for efficient gasification and pressurization of liquefied natural gas, comprising a base (1), characterized in that: A vaporization tank (2) is fixedly connected to one end of the top of the base (1). An inlet end (3) is fixedly connected to one side wall of the vaporization tank (2). An outlet end (4) is fixedly connected to the other side wall of the vaporization tank (2). A first electric valve (5) is fixedly connected to the side walls of both the inlet end (3) and the outlet end (4). A heating sleeve device (6) is fixedly connected to the outer wall of the vaporization tank (2). A sealing cover plate (7) is fixedly connected to the top of the gasification tank (2). A U-shaped connecting chamber (8) is fixedly connected to the top of the sealing cover plate (7). A heat exchange grid plate device (9) is fixedly connected to the bottom of the sealing cover plate (7). The top of the heat exchange grid plate device (9) passes through the sealing cover plate (7) and is fixedly connected to the bottom of both ends of the U-shaped connecting chamber (8). A high-efficiency compressor (10) is fixedly connected to the top of the base (1) through a snap-fit ​​limiting mechanism. A buffer chamber (11) is fixedly connected to both the input and output ends of the high-efficiency compressor (10). A connecting mechanism is provided between the top of one of the buffer chambers (11) and the first electric valve (5). A second electric valve (12) is fixedly connected to the bottom of the other buffer chamber (11). A spiral buffer chamber (13) is opened in the cavity of the buffer chambers (11) at both ends. An air-loving coating is provided in the cavity of the gasification tank (2).

2. The device for efficient gasification and pressurization of liquefied natural gas according to claim 1, characterized in that: The snap-fit ​​limiting mechanism includes a snap-fit ​​seat (14), a snap-fit ​​plate (15), a limiting screw hole (16), and a limiting bolt (17). The top two ends of the base (1) are fixedly connected to the snap-fit ​​seat (14), and the two side walls of the high-efficiency compressor (10) are fixedly connected to the snap-fit ​​plate (15). The snap-fit ​​plate (15) at both ends is inserted into the corresponding snap-fit ​​seat (14). The surface of the snap-fit ​​plate (15) at both ends is provided with a limiting screw hole (16). The side wall of the snap-fit ​​seat (14) at both ends is inserted into the limiting bolt (17) through the opening. The limiting bolt (17) at both ends is threadedly connected to the corresponding limiting screw hole (16).

3. The device for efficient gasification and pressurization of liquefied natural gas according to claim 1, characterized in that: The connection mechanism includes a threaded pipe end (18), a delivery hose (19), and a sealing threaded pipe sleeve (20). The top output end of one of the buffer chambers (11) is fixedly connected to the threaded pipe end (18), and the output end of one of the first electric valves (5) is fixedly connected to the delivery hose (19). The other end of the delivery hose (19) is fixedly connected to the sealing threaded pipe sleeve (20), and the sealing threaded pipe sleeve (20) is threadedly connected to the threaded pipe end (18).

4. The device for efficient gasification and pressurization of liquefied natural gas according to claim 1, characterized in that: The heating sleeve device (6) has a first heat source inlet end (21) fixedly connected to one end of its side wall, and a first heat source outlet end (22) fixedly connected to the other end of its side wall.

5. The device for efficient gasification and pressurization of liquefied natural gas according to claim 1, characterized in that: A second heat source inlet (23) is fixedly connected to one side wall of the U-shaped connecting chamber (8), and a second heat source outlet (24) is fixedly connected to the other side wall of the U-shaped connecting chamber (8).

6. The device for efficient gasification and pressurization of liquefied natural gas according to claim 1, characterized in that: The heat exchange grid plate device (9) includes an inlet hollow grid plate (25), a connecting pipe (26) is fixedly connected to the bottom of the inlet hollow grid plate (25), and an outlet hollow grid plate (27) is fixedly connected to the other end of the connecting pipe (26).

Images