An apparatus for liquefied gas storage and supply for an LNG dredger

Abstract

The application discloses a liquefied gas storage and supply device for an LNG dredger, which comprises an outer tank, a positioning mechanism, a buffer storage mechanism and a temperature adjusting mechanism, the outer tank is fixedly connected with the positioning mechanism, the positioning mechanism comprises two annular grooves which are fixedly connected on the outer wall of the outer tank in a symmetrical and uniform manner, arc-shaped frames are movably connected on the inner wall of the annular grooves, and two movable frame plates are fixedly connected on the lower part of the arc-shaped frames in a symmetrical and uniform manner. The device has a clever structure and a reasonable design, can automatically lock the tank body storing the liquefied gas on the transportation and supply structure, increases the stability during the placing process, buffers the shaking of the tank body caused by the impact of the liquefied gas during the moving process, guarantees the safety during the storage and transportation process, and can monitor and adjust the temperature of the storage space of the liquefied gas, so that the influence of the external temperature on the storage of the liquefied gas is prevented.

Description

Technical Field

[0001] This invention relates to the field of liquefied gas storage and transfer supply technology, and in particular to a device for liquefied gas storage and supply for LNG dredgers. Background Technology

[0002] Liquefied natural gas (LNG), primarily composed of methane, is widely recognized as the cleanest fossil fuel on Earth. It is colorless, odorless, non-toxic, and non-corrosive. Its volume is approximately 1 / 625th that of the same amount of gaseous natural gas, and its mass is only about 45% of that of the same volume of water. Its production process involves purifying natural gas produced from gas fields, followed by a series of cryogenic liquefaction processes, and then transporting it via LNG carriers. LNG combustion produces very little air pollution and releases a large amount of heat, making it a relatively advanced energy source.

[0003] Existing patent document CN111771080A discloses a container for storing and transporting liquefied gases, particularly cryogenic fluids such as helium. The container includes: an inner first reservoir extending longitudinally for storing the liquefied gas; an outer second reservoir disposed around the first reservoir, with a vacuum insulation space between the first and second reservoirs; and an annular third reservoir disposed around the first reservoir and between the first and second reservoirs, the annular third reservoir extending around at least a portion of the first reservoir and containing the liquefied gas to form a thermal shield for insulating the first reservoir. This avoids thermal defects and improves degassing of the insulating portion, preventing localized compression of the insulation material.

[0004] Regarding the aforementioned technologies, the inventors have discovered at least the following problems: they lack a locking structure for the transportation and supply process, reducing the stability of the transportation and placement process; they cannot provide internal and external buffering for the shaking caused by the impact of liquefied gas on the tank during movement, reducing the safety of the storage and transportation process; and they cannot monitor and regulate the temperature of the liquefied gas storage space, making it easy for external temperature to affect the storage of liquid gas. Summary of the Invention

[0005] The purpose of this invention is to solve the problems in the prior art and to propose a device for liquefied gas storage and supply for LNG dredgers.

[0006] To achieve the above objectives, the present invention adopts the following technical solution: a device for liquefied gas storage and supply for LNG dredgers, comprising an outer tank, a positioning mechanism, a buffer storage mechanism and a temperature regulating mechanism, wherein the positioning mechanism is fixedly connected to the outer wall of the outer tank, the buffer storage mechanism is fixedly connected to the inner wall of the outer tank, and the temperature regulating mechanism is fixedly connected to one side of the inner wall of the outer tank.

[0007] The positioning mechanism includes two annular grooves that are symmetrically and evenly distributed and fixedly connected to the outer wall of the outer tank. An arc-shaped frame is movably connected to the inner wall of the annular grooves. Two movable frame plates are symmetrically and evenly distributed and fixedly connected below the arc-shaped frame. The two movable frame plates on the same side are connected together by a sliding rod. An adjustment frame is fixedly connected below the arc-shaped frame. A rack plate is fixedly connected below the adjustment frame. A positioning gear is movably connected between the two rack plates. A base plate is fixedly connected below the positioning gear. An auxiliary plate is fixedly connected to the side of one of the rack plates. An electric telescopic rod is fixedly connected to the side of the auxiliary plate.

[0008] The buffer storage mechanism includes two inner groove ring plates that are symmetrically and evenly distributed and fixedly connected to the inner wall of the outer tank. Several sliding rotating frames are fixedly connected to the inner wall of the inner groove ring plates in a circumferentially distributed manner. An elastic telescopic rod is fixedly connected to the other end of each sliding rotating frame. A positioning rotating frame is fixedly connected to the other end of each elastic telescopic rod. A positioning ring plate is fixedly connected between the several positioning rotating frames. An inner tank is fixedly installed between two positioning ring plates. Several middle partitions are fixedly connected to the inner wall of the inner tank in a straight line in a symmetrically distributed manner. Several through holes are evenly distributed on the surface of each middle partition.

[0009] In the aforementioned equipment for liquefied gas storage and supply for LNG dredgers, side plate frames are fixedly connected to both ends of the slide bar, and the two side plate frames are fixedly connected to the surface of the bottom plate below.

[0010] In the aforementioned equipment for liquefied gas storage and supply for LNG dredgers, a fixing plate is fixedly connected to the other end of the electric telescopic rod, and the fixing plate is fixedly installed on the surface of the base plate below it.

[0011] In the aforementioned equipment for liquefied gas storage and supply for LNG dredgers, a hose is fixedly connected to the other end of the inner tank, and a connecting pipe is fixedly connected to the other end of the hose. The outer wall of the connecting pipe is fixedly connected to one side of the outer tank.

[0012] In the aforementioned equipment for liquefied gas storage and supply for LNG dredgers, the temperature regulation mechanism includes an annular protective box fixedly connected to the outer wall of the inner tank. Several arc-shaped heating tubes are fixedly connected to the inner wall of the annular protective box in a straight line. A multi-layer copper ring plate is movably connected to one end of the inner tank. A cooler is fixedly connected to the side of the multi-layer copper ring plate. The cooler is fixedly connected to the outer tank. A temperature sensor is fixedly connected to one side of the inner wall of the inner tank.

[0013] In the aforementioned equipment for liquefied gas storage and supply for LNG dredgers, a fixed frame plate is fixedly connected to the lower part of the inner wall of the annular protective box, and the fixed frame plate is fixedly connected to the arc-shaped heating pipe.

[0014] In the aforementioned equipment for liquefied gas storage and supply for LNG dredgers, a connecting frame is fixedly connected to the upper part of the outer tank, and a slot is provided in the middle of the connecting frame.

[0015] Compared with existing technologies, the beneficial effects of the present invention are as follows:

[0016] 1. This invention connects two rack plates with a positioning gear, so that the two rack plates move in opposite directions, driving the arc-shaped frame to connect with the annular groove on the outer wall of the outer tank. While the arc-shaped frame is moving, its sliding rod limits the direction of movement of the arc-shaped frame, thereby ensuring the stability of the arc-shaped frame's movement process. This enables the automatic locking of the tank storing liquefied gas onto the transport supply structure, increasing the stability of the placement process.

[0017] 2. By using a partition to block the swaying liquid, and the through holes to ensure the normal storage function of the inner tank, even though the liquid is buffered by the partition, its vibration still causes a certain degree of shaking to the inner tank. At this time, with the cooperation of the positioning rotating frame and the sliding rotating frame, the vibration is absorbed by the elastic telescopic rod, and the movable connection between the sliding rotating frame and the inner tank ring plate buffers and unloads the force. In this way, the shaking caused by the impact of liquefied gas on the tank during the movement can be buffered internally and externally, ensuring the safety of storage and transportation.

[0018] 3. The inner tank is monitored by a temperature sensor. When the temperature is too low, the arc-shaped heating tube will be activated to heat the inner tank from the outer wall to the inside, thereby increasing the temperature inside the inner tank. When the temperature is too high, the cooler will be activated to cool the tank. The multi-layer copper ring plate contacts the inner tank to perform the cooling operation. This allows for temperature monitoring and regulation of the liquefied gas storage space to prevent external temperature from affecting the storage of liquefied gas.

[0019] In summary, this invention has an ingenious structure and a reasonable design. It can automatically lock the tank for storing liquefied gas onto the transport and supply structure, increasing the stability of the placement process. It can also buffer the shaking caused by the impact of liquefied gas on the tank during movement, ensuring the safety of storage and transportation. Furthermore, it can monitor and regulate the temperature of the liquefied gas storage space to prevent external temperature from affecting the storage of the liquid gas. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the structure of a device for storing and supplying liquefied gas for an LNG dredger, as proposed in this invention.

[0021] Figure 2 This is a schematic diagram of the structure of a device for storing and supplying liquefied gas for an LNG dredger, as proposed in this invention.

[0022] Figure 3 This is a schematic diagram of the structure of a device for storing and supplying liquefied gas for an LNG dredger, as proposed in this invention.

[0023] Figure 4 This is a partial internal schematic diagram of a device for storing and supplying liquefied gas in an LNG dredger, as proposed in this invention.

[0024] Figure 5 This is a side view schematic diagram of a device for storing and supplying liquefied gas for an LNG dredger, as proposed in this invention.

[0025] Figure 6 for Figure 5 Schematic diagram of the cross section at point AA;

[0026] Figure 7 This is a front view schematic diagram of a device for storing and supplying liquefied gas for an LNG dredger, as proposed in this invention.

[0027] Figure 8 for Figure 7 Schematic diagram of the cross section at point BB;

[0028] Figure 9 This is a schematic diagram of the base plate.

[0029] In the diagram: 1. Outer tank; 2. Positioning mechanism; 201. Annular groove; 202. Arc-shaped frame; 203. Movable frame plate; 204. Slide rod; 205. Side plate frame; 206. Adjustment frame; 207. Rack plate; 3. Positioning gear; 4. Base plate; 5. Auxiliary plate; 6. Buffer storage mechanism; 601. Inner groove ring plate; 602. Sliding rotating frame; 603. Elastic telescopic rod; 604. Positioning rotating frame; 605. Positioning ring plate; 606. Middle partition plate; 607. Through hole; 608. Inner tank; 609. Hose; 7. Fixing plate; 8. Temperature regulation mechanism; 801. Refrigerator; 802. Multi-layer copper ring plate; 803. Annular protective box; 804. Arc-shaped heating tube; 805. Fixing frame plate; 9. Electric telescopic rod; 10. Temperature sensor; 11. Connecting frame; 12. Slot; 13. Connecting pipe. Detailed Implementation

[0030] The following examples are for illustrative purposes only and are not intended to limit the scope of the invention. Example

[0031] Reference Figure 1-8 A device for storing and supplying liquefied gas for an LNG dredger includes an outer tank 1, a positioning mechanism 2, a buffer storage mechanism 6, and a temperature regulating mechanism 8. The positioning mechanism 2 is fixedly connected to the outer wall of the outer tank 1, the buffer storage mechanism 6 is fixedly connected to the inner wall of the outer tank 1, and the temperature regulating mechanism 8 is fixedly connected to one side of the inner wall of the outer tank 1.

[0032] The positioning mechanism 2 includes two annular grooves 201 that are symmetrically and evenly distributed and fixedly connected to the outer wall of the outer tank 1. An arc-shaped frame 202 is movably connected to the inner wall of the annular grooves 201. Through the connection between the arc-shaped frame 202 and the annular grooves 201, the outer tank 1 is supported and locked at the same time. Below the arc-shaped frame 202, two movable frame plates 203 are symmetrically and evenly distributed and fixedly connected. The two movable frame plates 203 on the same side are connected together by a slide rod 204. Below the arc-shaped frame 202, an adjusting frame 206 is fixedly connected. Below the adjusting frame 206, a rack plate 207 is fixedly connected. The two rack plates 207 are movable. A positioning gear 3 is connected to the moving part. The shaft of the positioning gear 3 is fixedly connected to the base plate 4. An auxiliary plate 5 is fixedly connected to the side of one of the rack plates 207. An electric telescopic rod 9 is fixedly connected to the side of the auxiliary plate 5. Side plate frames 205 are fixedly connected to both ends of the slide rod 204. The two side plate frames 205 are fixedly connected to the surface of the base plate 4 at the bottom. The slide rod 204 is positioned by the side plate frames 205. A fixing plate 7 is fixedly connected to the other end of the electric telescopic rod 9. The fixing plate 7 is fixedly installed on the surface of the base plate 4 at the bottom. The electric telescopic rod 9 is positioned by the fixing plate 7 to ensure that the electric telescopic rod 9 works stably.

[0033] The buffer storage mechanism 6 includes two inner groove ring plates 601 that are symmetrically and evenly distributed and fixedly connected to the inner wall of the outer tank 1. Several sliding rotating frames 602 are circumferentially and evenly distributed and fixedly connected to the inner wall of the inner groove ring plates 601. An elastic telescopic rod 603 is fixedly connected to the other end of each sliding rotating frame 602. Through the movable connection between the sliding rotating frame 602 and the inner groove ring plate 601, and with the cooperation of the positioning rotating frame 604 and the sliding rotating frame 602, the mechanism further buffers and dampens the swaying of the inner tank 608. A positioning rotating frame 604 is fixedly connected to the other end of the elastic telescopic rod 603. A positioning ring plate 605 is fixedly connected between the several positioning rotating frames 604. The inner tank 608 is fixedly installed between two positioning ring plates 605. The inner tank 608 has several partitions 606 fixedly connected to it in a straight line on its inner wall. The partitions 606 block the sloshing of liquefied gas in the inner tank 608, thereby reducing the sloshing caused by liquefied gas in the inner tank 608. Several through holes 607 are evenly distributed on the surface of the partitions 606. A hose 609 is fixedly connected to the other end of the inner tank 608. A connecting pipe 13 is fixedly connected to the other end of the hose 609. The connecting pipe 13 and the hose 609 work together to introduce liquefied gas into the inner tank 608. The outer wall of the connecting pipe 13 is fixedly connected to one side of the outer tank 1. The connecting pipe 13 of the outer tank 1 is connected to the inner tank 608 through the hose 609 to ensure an effective connection between the inner tank 608 and the outer tank 1.

[0034] Temperature regulation mechanism 8 includes an annular protective box 803 fixedly connected to the outer wall of inner tank 608. Several arc-shaped heating tubes 804 are fixedly connected to the inner wall of the annular protective box 803 in a straight, evenly distributed manner. A multi-layer copper ring plate 802 is movably connected to one end of inner tank 608, rapidly transferring the low temperature generated by the cooler 801 to inner tank 608 through the multi-layer copper ring plate 802. The cooler 801 is fixedly connected to the side of the multi-layer copper ring plate 802 and is fixedly connected to the outer tank 1. A third layer is fixedly connected to one side of the inner wall of inner tank 608. A temperature sensor 10 is provided to monitor the temperature in the inner tank 608 in real time. A fixed frame plate 805 is fixedly connected to the lower part of the inner wall of the annular protective box 803. The fixed frame plate 805 is fixedly connected to the arc-shaped heating tube 804. The fixed frame plate 805 provides positioning support for the arc-shaped heating tube 804. A connecting frame 11 is fixedly connected to the upper part of the outer tank 1. A slot 12 is opened in the middle of the connecting frame 11. The outer tank 1 is hoisted through the slot 12 in the connecting frame 11, which increases the convenience of transportation.

[0035] Working principle: Workers connect the hoisting equipment to the connecting frame 11, hoisting the outer tank 1 onto the two arc-shaped plates. Then, the electric telescopic rod 9 is activated, moving one of the rack plates 207. Since the two rack plates 207 are connected to the positioning gear 3, their movements are opposite, causing the arc-shaped frame 202 to connect with the annular groove 201 on the outer wall of the outer tank 1. While the arc-shaped frame 202 moves, its sliding rod 204 limits its direction of movement, ensuring stability during movement. This automatically locks the liquefied gas storage tank onto the transport supply structure, increasing stability during placement. After locking, the liquid sloshes within the inner tank 608 during movement. A partition 606 blocks the sloshing liquid, and its through-hole 607 ensures the normal storage function of the inner tank 608. Although the partition 606 buffers the liquid, vibration is still possible. The inner tank 608 experiences a certain degree of shaking. The vibration is absorbed by the elastic telescopic rod 603 through the cooperation of the positioning rotating frame 604 and the sliding rotating frame 602. The movable connection between the sliding rotating frame 602 and the inner tank ring plate 601 provides buffering and stress relief, thus buffering the shaking caused by the impact of the liquefied gas on the tank during movement and ensuring safety during storage and transportation. After transportation, since temperature affects the storage of the liquefied gas, the inner tank 608 is monitored by the temperature sensor 10. If the temperature is too low, the arc-shaped heating tube 804 is activated to heat the inner tank 608, extending from the outer wall inwards to raise the temperature. If the temperature is too high, the cooler 801 is activated to cool the tank. The multi-layer copper ring plate 802 contacts the inner tank 608 to perform the cooling operation. This allows for temperature monitoring and regulation of the liquefied gas storage space to prevent external temperatures from affecting the storage of the liquefied gas.

[0036] The preferred embodiments of the present invention disclosed above are merely illustrative of the invention. These preferred embodiments do not exhaustively describe all details, nor do they limit the invention to the specific implementations described. Clearly, many modifications and variations can be made based on the content of this specification. This specification selects and specifically describes these embodiments to better explain the principles and practical applications of the invention, thereby enabling those skilled in the art to better understand and utilize the invention. The invention is limited only by the claims and their full scope and equivalents.

Claims

1. An apparatus for liquefied gas storage and supply of an LNG dredger, comprising an outer tank, a positioning mechanism, a buffer storage mechanism and a temperature adjusting mechanism, characterized in that: The outer tank outer wall is fixedly connected with a positioning mechanism, the outer tank inner wall is fixedly connected with a buffer storage mechanism, and the outer tank inner wall one side is fixedly connected with a temperature adjusting mechanism; The positioning mechanism comprises two annular grooves fixedly connected to the outer tank outer wall in a symmetrical and uniform manner, the annular groove inner wall is movably connected with an arc-shaped frame, the arc-shaped frame lower side is fixedly connected with two movable frame plates in a symmetrical and uniform manner, the two movable frame plates on the same side are connected together through a slide rod, the arc-shaped frame lower side is fixedly connected with an adjusting frame, the adjusting frame lower side is fixedly connected with a rack plate, the rack plate movement direction and the slide rod axis are parallel to the outer tank axis, the two rack plates are movably connected with a positioning gear in the middle, the positioning gear lower side is fixedly connected with a bottom plate, one side of the rack plate is fixedly connected with an auxiliary plate, and the auxiliary plate side is fixedly connected with an electric telescopic rod; The buffer storage mechanism comprises two inner groove ring plates fixedly connected to the outer tank inner wall in a symmetrical and uniform manner, the inner groove ring plate inner wall is fixedly connected with a plurality of sliding rotary frames in a circumferential and uniform manner, the sliding rotary frame other end is fixedly connected with an elastic telescopic rod, the elastic telescopic rod other end is fixedly connected with a positioning rotary frame, a plurality of positioning rotary frames are fixedly connected with a positioning ring plate in the middle, and the two positioning ring plates are fixedly installed with an inner tank in the middle.

2. An apparatus for storage and supply of liquefied gas for an LNG dredger according to claim 1, characterized in that: The slide rod two ends are fixedly connected with a side plate frame, and the two side plate frames are fixedly connected to the bottom plate surface.

3. An apparatus for storage and supply of liquefied gas for an LNG dredger according to claim 1, characterized in that: The electric telescopic rod other end is fixedly connected with a fixed plate, and the fixed plate lower side is fixedly installed on the bottom plate surface.

4. An apparatus for storage and supply of liquefied gas for an LNG dredger according to claim 1, characterized in that: The inner tank other end is fixedly connected with a hose, the hose other end is fixedly connected with a connecting pipe, and the connecting pipe outer wall is fixedly connected with one side of the outer tank.

5. An apparatus for the storage and supply of liquefied gas for an LNG dredger according to claim 4, characterized in that: The temperature adjusting mechanism comprises an annular protection box fixedly connected to the inner tank outer wall, the annular protection box inner wall is fixedly connected with a plurality of arc-shaped heating pipes in a straight and uniform manner, the inner tank one end is movably connected with a plurality of copper ring plates, the copper ring plate side is fixedly connected with a refrigerator, the refrigerator is fixedly connected with the outer tank, and the inner tank inner wall one side is fixedly connected with a temperature sensor.

6. An apparatus for the storage and supply of liquefied gas for an LNG dredger according to claim 5, characterized in that: The annular protection box inner wall lower side is fixedly connected with a fixed frame plate, and the fixed frame plate is fixedly connected with the arc-shaped heating pipe.

7. An apparatus for storage and supply of liquefied gas for an LNG dredger according to claim 1, characterized in that: The outer tank outer wall upper side is fixedly connected with a connecting frame, and the connecting frame middle is provided with a slot hole.

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