LNG storage tank

Abstract

The utility model discloses an LNG (Liquefied Natural Gas) storage tank and relates to the technical field of LNG storage tanks. The device comprises a tank body, a bracket, a support arm and a base, one end of the tank body is provided with an end cover, the lower side of one end of the tank body is communicated with a plurality of air supply pipes, and the end of each air supply pipe is provided with an electromagnetic control valve; the two sides of the lower end of the tank body are fixed to supporting bases through screws, supporting arms are fixed to the outer portions of the two supporting bases, a supporting plate is fixed to the bottom of each supporting arm, a bearing column is fixed to the bottom of each supporting plate, and a buffering base is installed outside the lower end of each bearing column. According to the utility model, the first buffer spring, the first damping rod and the rubber shock absorber are matched with each other to buffer the longitudinal impact in the LNG storage tank transportation process, and the second damping rod, the second buffer spring and the abutting plate are matched with each other to buffer the impact force in the horizontal direction; therefore, the impact on the welding seam of the LNG storage tank in the transportation process is weakened.

Description

Technical Field

[0001] This utility model belongs to the field of LNG storage tank technology, specifically, it relates to an LNG storage tank. Background Technology

[0002] LNG storage tanks are specialized products for storing liquefied natural gas. They are special equipment, Class III pressure vessels, made of 06Ni9DR material, and undergo flaw detection, hydrostatic and pneumatic pressure tests, on-site inspection by the technical supervision bureau, and issuance of pressure vessel inspection certificates. They are manufactured using processes such as external rust removal and painting. Liquefied gas storage tanks have strict quality assessments regarding the materials of pressure-bearing components, appearance dimensions and weld quality, operational quality, installation quality, internal devices, and safety accessories.

[0003] Since LNG storage tanks are used to store natural gas, their sealing requirements are high. However, existing LNG storage tanks do not have a cushioning structure, which makes them susceptible to impact during transport by vehicles to the storage area. This impact can easily cause cracks or damage to the welds. Therefore, this utility model is proposed. Utility Model Content

[0004] The technical problem to be solved by this utility model is to overcome the shortcomings of the existing technology and provide an LNG storage tank.

[0005] To solve the above-mentioned technical problems, the basic concept of the technical solution adopted by this utility model is as follows:

[0006] An LNG storage tank includes a tank body, a support, a support arm, and a base. One end of the tank body is provided with an end cap, and multiple gas supply pipes are connected to the lower side of one end of the tank body. Each gas supply pipe is equipped with an electromagnetic control valve at its end.

[0007] The lower ends of the tank are fixed to the support bases by screws on both sides. Support arms are fixed to the outside of the two support bases. Support plates are fixed to the bottom of each support arm. Load-bearing columns are fixed to the bottom of each support plate. Buffer seats are installed on the lower ends of the load-bearing columns. Guide holes for guide rods to pass through are opened in the interior of the front and rear end walls of the buffer seats. The buffer seats are movably connected to the cavity opened inside the base. A first buffer spring is sleeved on the outside of each guide rod. Multiple first damping rods are symmetrically fixed inside the cavity. The telescopic ends of the first damping rods are fixed to the bottom of the buffer seats. Rubber shock absorbers are provided on the opposite surfaces of the buffer seats and the cavity.

[0008] The buffer seat has a guide rail fixed at its inner bottom for the horizontal movement of the guide block. The guide block is fixedly installed at the bottom of the load-bearing column. Both sides of the buffer seat have brackets fixed inside. Multiple second damping rods are fixed in the middle of the two brackets. The telescopic end of each second damping rod passes through the middle of the bracket and is fixed to the abutment plate. A second buffer spring is installed on the outside of the telescopic end of each second damping rod.

[0009] Optionally, both the buffer seat and the base are provided with a clearance groove at the upper end for the horizontal movement of the load-bearing column, and polyurethane buffer blocks are fixed on both sides inside the clearance groove at the upper end of the base.

[0010] Optionally, a dustproof accordion cover is installed between the support plate and the base, and the middle of the dustproof accordion cover is provided with a reserved area for the movement of the load-bearing column.

[0011] Optionally, a polyurethane cushioning pad is fixed to the bottom of the base, and lifting bolts are threaded to both sides of each base. Each lifting bolt is rotatably connected to a support foot via a bearing. Each support foot is provided with a ball bearing that contacts the bottom of the lifting bolt. A level is provided at the front end of the base.

[0012] Optionally, lifting lugs are fixed on both sides of the upper end of the tank body, and heat insulation pads are fitted on the outside of the tank body and the outside of the gas supply pipe. The heat insulation pads are fixed by fixing hoops, and a heating pad is provided inside the heat insulation pads. An electric heating film is provided inside the heating pads.

[0013] Optionally, a first temperature sensor is attached to one side of the lower end of each heating pad. The first temperature sensor is connected to a temperature controller via a wire. A second temperature sensor for detecting ambient temperature is provided on the upper end of the housing of each temperature controller. The second ambient temperature sensor is connected to the temperature controller via a wire. The temperature controller is connected to the electric heating film via a wire.

[0014] By adopting the above technical solution, the present invention has the following beneficial effects compared with the prior art. Of course, any product implementing the present invention does not necessarily need to achieve all of the following advantages at the same time:

[0015] 1. This utility model uses a first buffer spring, a first damping rod, and rubber shock absorbers to buffer longitudinal impacts encountered during the transportation of LNG storage tanks. Specifically, during a longitudinal impact, the load-bearing column presses down, causing the buffer seat to descend vertically under the guidance of the guide rod. During this process, the first buffer spring absorbs the impact force and releases elastic potential energy. The first damping rod suppresses this release, thus completing the buffering. Furthermore, when the impact is large enough to cause contact between the buffer seat and the base, the two rubber shock absorbers abut against each other to complete the buffering. During transportation, when a horizontal impact occurs, the second damping rod, the second buffer spring, and the contact plate work together to buffer the impact. Specifically, the contact plate contacts the side of the load-bearing seat. When subjected to a horizontal impact, the load-bearing column moves, compressing the second buffer spring. The second buffer spring releases elastic potential energy under pressure, and the second damping rod suppresses this released elastic potential energy for further buffering.

[0016] 2. This utility model takes into account the possibility of gas freezing during winter use. In this case, the temperature will be released through the electric heating film inside the heating pad, thereby ensuring that the temperature of the tank is at the storage condition temperature, so as to avoid the temperature being too low and affecting the use of natural gas.

[0017] The specific embodiments of this utility model will be described in further detail below with reference to the accompanying drawings. Attached Figure Description

[0018] The accompanying drawings described below are merely some embodiments. Those skilled in the art can obtain other drawings based on these drawings without any creative effort.

[0019] In the picture:

[0020] Figure 1 This is a schematic diagram of the front cross-sectional structure of this utility model;

[0021] Figure 2 This is a structural diagram of the combined parts of the support, arm and base in this utility model;

[0022] Figure 3 This is a structural diagram of the combined parts of the bracket, the second damping rod, and the contact plate in this utility model;

[0023] Figure 4 This is a longitudinal section structural diagram of the dustproof bellows cover in this utility model;

[0024] Figure 5 for Figure 1 A schematic diagram of the structure of part A in the diagram;

[0025] Figure 6 for Figure 2A schematic diagram of the structure of part B in the diagram;

[0026] Figure 7 for Figure 2 A schematic diagram of the structure of part C in the diagram.

[0027] The attached diagram lists the components represented by each number as follows:

[0028] 1. Tank body; 2. End cap; 3. Gas supply pipe; 4. Electromagnetic control valve; 5. Support; 6. Support arm; 7. Support plate; 8. Load-bearing column; 9. Buffer seat; 10. Guide rod; 11. First buffer spring; 12. First damping rod; 13. Rubber shock absorber; 14. Guide block; 15. Guide rail; 16. Bracket; 17. Second damping rod; 18. Contact plate; 19. Second buffer spring; 20. Clearance groove; 21. Polyurethane buffer block; 22. Second temperature sensor; 23. Dustproof bellows cover; 24. Polyurethane buffer pad; 25. Lifting bolt; 26. Support leg; 27. Ball bearing; 28. Level; 29. ​​Lifting lug; 30. Insulation pad; 31. Fixing hoop; 32. Heating pad; 33. Electric heating film; 34. First temperature sensor; 35. Temperature controller.

[0029] It should be noted that these accompanying drawings and textual descriptions are not intended to limit the scope of the present invention in any way, but rather to illustrate the concept of the present invention to those skilled in the art by referring to specific embodiments. Detailed Implementation

[0030] The present invention will now be described in further detail with reference to the accompanying drawings.

[0031] Please see Figures 1 to 7 This utility model provides a technical solution: an LNG storage tank, including a tank body 1, a support 5, a support arm 6 and a base. One end of the tank body 1 is provided with an end cap 2, and multiple gas supply pipes 3 are connected to the lower side of one end of the tank body 1. Each gas supply pipe 3 is equipped with an electromagnetic control valve 4 at its end.

[0032] Both sides of the lower end of the tank body 1 are fixed to the support 5 with screws. Support arms 6 are fixed to the outside of the two support 5. Support plates 7 are fixed to the bottom of each support arm 6. Support columns 8 are fixed to the bottom of each support plate 7. Buffer seats 9 are installed on the outside of the lower end of the support columns 8. Guide holes for guide rods 10 to pass through are opened in the interior of the front and rear end walls of the buffer seats 9. The buffer seats 9 are movably connected to the cavity opened inside the base. A first buffer spring 11 is sleeved on the outside of each guide rod 10. Multiple first damping rods 12 are symmetrically fixed inside the cavity. The telescopic ends of the first damping rods 12 are fixed to the bottom of the buffer seats 9. Rubber shock absorbers 13 are provided on the opposite surfaces of the buffer seats 9 and the cavity.

[0033] The buffer seat 9 has a guide rail 15 fixed at its inner bottom for the horizontal movement of the guide block 14. The guide block 14 is fixedly installed at the bottom of the load-bearing column 8. Supports 16 are fixed on both sides of the buffer seat 9. Multiple second damping rods 17 are fixed in the middle of each of the two supports 16. The telescopic end of each second damping rod 17 passes through the middle of the support 16 and is fixed to the contact plate 18. A second buffer spring 19 is installed on the outside of the telescopic end of each second damping rod 17. Considering that existing LNG storage tanks do not have a buffer structure, they are easily impacted by bumps during transport to the placement area. This impact can easily cause cracks or damage to the welds. This invention uses the first buffer spring 11, the first damping rod 12, and the rubber shock absorber 13 in combination to buffer the longitudinal impact encountered during the transport of the LNG storage tank. During longitudinal impact, the downward pressure of the load-bearing column 8 causes the buffer seat 9 to descend vertically under the guidance of the guide rod 10. During this process, the first buffer spring 11 absorbs the impact force and releases elastic potential energy. During the release of elastic potential energy, the first damping rod 12 is used to suppress the elastic potential energy, thereby completing the buffering. When the impact is large enough to cause the buffer seat 9 to contact the inside of the base, the two rubber shock absorbers 13 will abut against each other to complete the buffering. During transportation, when a horizontal impact occurs, the second damping rod 17, the second buffer spring 19, and the contact plate 18 will work together to buffer the impact. That is, the contact plate 18 contacts the side of the load-bearing seat. When subjected to a horizontal impact, the second buffer spring 19 is compressed as the load-bearing column 8 moves. After being compressed, the second buffer spring 19 releases elastic potential energy. During this process, the second damping rod 17 will suppress the elastic potential energy released by the second buffer spring 19 to buffer the impact.

[0034] The upper ends of the buffer seat 9 and the base are provided with relief grooves 20 for the horizontal movement of the load-bearing column 8. Polyurethane buffer blocks 21 are fixed on both sides of the relief groove 20 located at the upper end of the base. The polyurethane buffer blocks 21 protect the side of the load-bearing column 8. When the load-bearing column 8 moves horizontally, the side of the load-bearing column 8 will come into contact with the relief groove 20, causing a scratching effect. The polyurethane material has a cushioning effect.

[0035] A dustproof bellows cover 23 is installed between the support plate 7 and the base, and the middle of the dustproof bellows cover 23 is provided with a reserved area for the movement of the load-bearing column 8. By setting the dustproof bellows cover 23, dust is prevented from entering the interior and adhering to the extension end of the first damping rod 12 or the second damping rod 17, thereby affecting the service life of the first damping rod 12 and the second damping rod 17.

[0036] The base has a polyurethane buffer pad 24 fixed at its bottom. Lifting bolts 25 are threaded to both sides of each base. Each lifting bolt 25 has a support leg 26 rotatably connected to its bottom via a bearing. Each support leg 26 has a ball bearing 27 inside that contacts the bottom of the lifting bolt 25. A level 28 is provided at the front end of the base. The polyurethane buffer pad 24 provides auxiliary cushioning for the base and also protects the bottom surface of the base. The lifting bolts 25 and the level 28 are used to adjust the balance of the LNG storage tank. That is, when the LNG storage tank is not installed in a level position, the lifting bolts 25 are tightened to lift one side of the tank body 1. The level can be checked by observing the level 28.

[0037] The tank body 1 is equipped with lifting lugs 29 on both sides of its upper end. Insulation pads 30 are fitted on the outside of the tank body 1 and the gas supply pipe 3, and the insulation pads 30 are fixed by fixing hoops 31. A heating pad 32 is installed inside the insulation pad 30, and an electric heating film 33 is installed inside the heating pad 32. Considering that the gas may freeze when the device is used in winter, the temperature will be released through the electric heating film 33 inside the heating pad 32, thereby ensuring that the temperature of the tank body 1 is at the storage condition temperature, so as to avoid the temperature being too low and affecting the use of natural gas.

[0038] Each heating pad 32 has a first temperature sensor 34 attached to one side of its lower end. The first temperature sensor 34 is connected to a temperature controller 35 via a wire. Each temperature controller 35 has a second temperature sensor 22 on the upper end of its housing for detecting the ambient temperature. The second ambient temperature sensor is connected to the temperature controller 35 via a wire. The temperature controller 35 is connected to the electric heating film 33 via a wire. By setting the first temperature sensor 34, the heating temperature of the heating pad 32 on the tank 1 can be monitored. Detecting this temperature makes it convenient for the user to adjust the heating temperature of the electric heating film 33 through the temperature controller 35 to avoid overheating. The second temperature sensor 22 makes it convenient for the user to know the ambient temperature.

[0039] This utility model is not limited to the above-described embodiments. Anyone should know that structural changes made under the guidance of this utility model, and any technical solutions that are the same as or similar to this utility model, fall within the protection scope of this utility model. Technical aspects, shapes, and structures not described in detail in this utility model are all publicly known technologies.

Claims

1. An LNG storage tank, comprising a tank body (1), a support (5), a support arm (6), and a base, characterized in that, One end of the tank (1) is provided with an end cap (2), and multiple air supply pipes (3) are connected to the lower side of one end of the tank (1). Each air supply pipe (3) is equipped with an electromagnetic control valve (4). The lower end of the tank (1) is fixed to the support (5) by screws on both sides. Support arms (6) are fixed to the outside of the two support arms (5). Support plates (7) are fixed to the bottom of each support arm (6). A load-bearing column (8) is fixed to the bottom of each support plate (7). A buffer seat (9) is installed on the lower end of the load-bearing column (8). Guide holes for guide rods (10) to pass through are opened in the interior of the front and rear end walls of the buffer seat (9). The buffer seat (9) is movably connected in the cavity opened inside the base. A first buffer spring (11) is sleeved on the outside of each guide rod (10). Multiple first damping rods (12) are symmetrically fixed inside the cavity. The telescopic ends of the first damping rods (12) are fixed to the bottom of the buffer seat (9). Rubber shock absorbers (13) are provided on the opposite surfaces of the buffer seat (9) and the cavity. The buffer seat (9) has a guide rail (15) fixed at the bottom inside for the guide block (14) to move horizontally. The guide block (14) is fixedly installed at the bottom of the load-bearing column (8). The buffer seat (9) has brackets (16) fixed on both sides inside. Multiple second damping rods (17) are fixed in the middle of the two brackets (16). The telescopic end of each second damping rod (17) passes through the middle of the bracket (16) and is fixed to the contact plate (18). A second buffer spring (19) is installed on the outside of the telescopic end of each second damping rod (17).

2. An LNG storage tank according to claim 1, characterized in that, Both the buffer seat (9) and the base are provided with a clearance groove (20) for the horizontal movement of the load-bearing column (8), and polyurethane buffer blocks (21) are fixed on both sides of the clearance groove (20) located at the upper end of the base.

3. An LNG storage tank according to claim 1, characterized in that, A dustproof bellows cover (23) is installed between the support plate (7) and the base, and the middle of the dustproof bellows cover (23) is provided with a reserved area for the movement of the load-bearing column (8).

4. An LNG storage tank according to claim 1, characterized in that, The base has a polyurethane buffer pad (24) fixed at the bottom. Lifting bolts (25) are threaded to both sides of each base. Each lifting bolt (25) has a support foot (26) rotatably connected to the bottom of the support foot (26) through a bearing. Each support foot (26) has a ball bearing (27) inside that contacts the bottom of the lifting bolt (25). The front end of the base has a level (28).

5. An LNG storage tank according to claim 1, characterized in that, The upper end of the tank (1) is fixed with lifting lugs (29) on both sides. The tank (1) and the gas supply pipe (3) are covered with heat insulation pads (30), and the heat insulation pads (30) are fixed by fixing hoops (31). The heat insulation pads (30) are provided with heating pads (32) inside, and electric heating film (33) is provided inside the heating pads (32).

6. An LNG storage tank according to claim 5, characterized in that, Each heating pad (32) has a first temperature sensor (34) attached to one side of its lower end. The first temperature sensor (34) is connected to a temperature controller (35) via a wire. Each temperature controller (35) has a second temperature sensor (22) for detecting ambient temperature at the upper end of its housing. The second ambient temperature sensor is connected to the temperature controller (35) via a wire. The temperature controller (35) is connected to an electric heating film (33) via a wire.

Images