LNG tank container with automatic loading and unloading function

Abstract

The utility model provides a LNG tank box with automatic loading and unloading function, including the storage tank, the axis of storage tank is parallel with the placement surface, is provided with the feed pipe and the discharge pipe with its intercommunication on the lateral wall of storage tank, the feed pipe is matched with the export of pumping pump, the storage tank is matched with the import of discharge pump, still is provided with the cleaning port on the lateral wall of storage tank, is provided with the flange pipe with its intercommunication on the axis of cleaning port, the outside of flange pipe is provided with transparent observation disc, is provided with the lifting ring on the upper of transparent observation disc, is provided with the rotating frame on the lifting ring, is provided with the rotating seat on the lateral wall of flange pipe's pipeline, rotating frame rotationally sets up on rotating seat. The utility model can set up the cleaning port and the transparent observation disc of open and shut of setting up on the storage tank, has improved the portability of cleaning operation greatly, only needs to open transparent observation disc when cleaning operation can directly clean the inside of tank box, need not to disassemble complex structure, has improved cleaning efficiency greatly, is convenient for viewing the inside condition of storage tank.

Description

Technical Field

[0001] This utility model relates to the field of tank container equipment technology, specifically to an LNG tank container with automatic loading and unloading function. Background Technology

[0002] LNG storage tanks are specialized products for storing liquefied natural gas. They are special equipment, Class III pressure vessels, and LNG storage tanks undergo strict quality assessments regarding the materials of pressure-bearing components, external dimensions and weld quality, operational quality, installation quality, internal devices, and safety accessories.

[0003] In routine use of LNG tank containers, natural gas is typically delivered into the tank, and then the filled LNG tank container is automatically lifted and moved using large machinery.

[0004] LNG is a clean and efficient energy source. Existing LNG tank containers mostly use inlet and outlet pipes in conjunction with pumps to achieve automatic loading and unloading. However, during long-term use, impurities and sediments inevitably remain on the inner wall of the tank, requiring cleaning. Traditional cleaning methods mostly rely on pumping in cleaning fluid. However, it is difficult to clean stubborn impurities adhering to the inner wall. Long-term residue may lead to contamination of the materials in the tank, affecting its quality and performance. Utility Model Content

[0005] In view of this, the present invention provides an LNG tank container with automatic loading and unloading function. Through the coordinated action of the pre-set cleaning port on the tank, the transparent observation window and the rotating seat, the material condition inside the tank can be conveniently and efficiently viewed, and the cleaning operation can also be conveniently and efficiently carried out. This solves the problems of difficult internal cleaning and inconvenient observation of traditional tanks.

[0006] To solve the above-mentioned technical problems, this utility model provides an LNG tank container with automatic loading and unloading function, including a storage tank. The axis of the storage tank is parallel to the placement surface. An inlet pipe and a outlet pipe are provided on the side wall of the storage tank and are connected thereto. The inlet pipe is matched with the outlet of the pump, and the storage tank is matched with the inlet of the discharge pump. A cleaning port is also provided on the side wall of the storage tank. A flange pipe is provided on the axis of the cleaning port and is connected thereto. A transparent observation plate is provided on the outside of the flange pipe. A lifting ring is provided on the transparent observation plate, and a rotating frame is provided on the lifting ring. This makes it possible to open the cleaning port without the need for a separate transparent observation window, which is safer, more environmentally friendly, and saves space. A rotating seat is provided on the side wall of the flange pipe, and the rotating frame is rotatably mounted on the rotating seat. This utility model greatly improves the portability of cleaning operations by setting a cleaning port and an openable transparent observation plate on the storage tank. During cleaning operations, only the transparent observation plate needs to be opened to directly clean the inside of the tank container without disassembling complex structures, which greatly improves cleaning efficiency and facilitates real-time viewing of the inside of the storage tank.

[0007] The rotating base has a U-shaped structure, and the two horizontal parts of the rotating base are welded to the outer wall of the transparent coil.

[0008] The rotating frame is L-shaped, and a hook is provided at the horizontal end of the rotating frame. The hook is located directly above the lifting ring, and the lower part of the hook passes through the lifting ring. The rotating frame and the lifting ring can be fixedly hung by the hook.

[0009] Mounting holes are provided on both horizontal parts of the swivel base, and bearings are installed in the mounting holes. The vertical part of the rotating frame passes through the inner rings of the two bearings and is fixed together with the inner rings of the bearings.

[0010] The vertical side wall of the rotating base has a pin hole, and the rotating frame has a positioning hole coaxial with the pin hole. A positioning pin is inserted into the pin hole and the positioning hole. The rotation of the rotating frame can be locked by inserting the positioning pin into the pin hole and the positioning hole. The rotation of the rotating frame can be opened and closed by pulling out the positioning pin.

[0011] A reinforcing bar is installed between the horizontal and vertical parts of the rotating frame, which helps to improve the overall rigidity of the rotating frame.

[0012] The transparent observation panel is connected to the flange end of the flange tube by bolts and nuts, which facilitates further reinforcement of the installation of the transparent observation window.

[0013] A sealing gasket is installed between the inside of the transparent observation panel and the flange end to improve the overall sealing performance.

[0014] The storage tank is also equipped with outriggers and lifting lugs on its side wall. The outriggers facilitate the stable placement of the storage tank, while the lifting lugs facilitate the lifting and hoisting of the storage tank.

[0015] In summary, compared with the prior art, this application includes at least one of the following beneficial technical effects: 1. Solving the problem of difficult internal cleaning: This utility model can directly clean the inside of the tank by setting a cleaning port and an openable transparent observation plate. During the cleaning operation, you only need to open the transparent observation plate to clean the inside of the tank directly without disassembling the complex structure, which greatly improves the cleaning efficiency. At the same time, the high-strength material of the transparent observation plate can withstand the contact of cleaning tools and avoid damage.

[0016] 2. Solving the problem of cumbersome disassembly and assembly of observation components: This utility model can utilize the bearing connection structure between the rotating frame and the rotating seat. The transparent observation plate can be opened and closed by rotating the frame. With the linkage of the hook and the hanging ring and the fixation of the positioning pin, the operation does not require complicated tools and can be completed by a single person. This reduces the frequent disassembly and assembly wear of the sealing components and reduces the risk of leakage, which corresponds to the problem of "cumbersome disassembly and assembly of observation components" in the background technology.

[0017] 3. Reliable sealing performance: The transparent observation plate and the flange pipe in this utility model are connected by bolts and sealed with gaskets. Both bolts and gaskets are made of low-temperature resistant and corrosion-resistant materials. With the fixing effect of the positioning pin, LNG leakage can be effectively prevented and the safety of equipment operation can be guaranteed.

[0018] 4. Improved Automatic Loading and Unloading Coordination: This utility model can efficiently achieve automatic loading and unloading by selecting and adapting the feeding pump and discharge pump to the low-temperature characteristics of LNG. At the same time, the internal status can be monitored in real time through a transparent observation panel during the loading and unloading process. If impurities are found to accumulate, they can be dealt with in time through the cleaning port without interrupting the loading and unloading operation, thereby improving the overall work efficiency and solving the problem of "insufficient automatic loading and unloading coordination". Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the structure of the LNG tank container with automatic loading and unloading function according to this utility model; Figure 2 This utility model Figure 1 Enlarged view of point A in the middle; Figure 3 This is a front view of the LNG tank container with automatic loading and unloading function according to this utility model; Figure 4 This is a bottom view of the LNG tank container with automatic loading and unloading function of this utility model.

[0020] Explanation of reference numerals in the attached drawings: 100, storage tank; 101, feed pipe; 102, discharge pipe; 103, cleaning port; 104, support leg; 105, lifting lug; 200, flange pipe; 300, transparent observation plate; 400, lifting ring; 500, rotating frame; 501, positioning hole; 502, reinforcing rod; 600, swivel seat; 601, mounting hole; 602, pin hole; 700, positioning pin. Detailed Implementation

[0021] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the following will be described in conjunction with the appendices of the embodiments of this utility model. Figure 1-4 The technical solutions of the embodiments of this utility model are clearly and completely described herein. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. All other embodiments obtained by those skilled in the art based on the described embodiments of this utility model are within the protection scope of this utility model.

[0022] like Figure 1-4As shown: This embodiment provides an LNG tank container with automatic loading and unloading function, including a storage tank 100. The storage tank 100 is made of 9Ni steel, which has excellent low-temperature toughness and strength, and can withstand the low temperature and high pressure environment during LNG storage. The axis of the storage tank 100 is parallel to the placement surface. The side wall of the storage tank 100 is provided with an inlet pipe 101 and an outlet pipe 102 connected to it. The inlet pipe 101 is matched with the outlet of the pump, and the storage tank 100 is matched with the inlet of the discharge pump. The pump is a cryogenic centrifugal pump manufactured by Ebara, model CDL2-16. This pump is suitable for cryogenic medium transportation and can realize efficient automatic feeding of LNG. The discharge pump is a stainless steel centrifugal pump manufactured by Grundfos, model CR3-18, which has excellent low-temperature resistance and can realize LNG... The automatic discharge system includes a cleaning port 103 on the side wall of the storage tank 100. The cleaning port 103 is used for cleaning impurities and maintenance inside the tank. A flange pipe 200 is connected to the cleaning port 103 along its axis. A transparent observation plate 300 is installed on the outside of the flange pipe 200. The flange pipe 200 is made of 304 stainless steel, which has good corrosion resistance and low-temperature adaptability. One end of the flange pipe 200 is welded to the cleaning port 103, and the other end is equipped with a flange for connecting the transparent observation plate 300. The transparent observation plate 300 is made of high-strength borosilicate glass, which allows for clear observation of the internal condition of the tank and withstands the internal pressure. A lifting ring 400 is installed on the transparent observation plate 300, and a rotating frame 500 is installed on the lifting ring 400. The lifting ring 400 is made of Q235 stainless steel. Made of carbon steel, it is welded and fixed to the middle of the outer wall of the transparent observation plate 300, and is used to cooperate with the rotating frame 500 to realize the opening and closing of the transparent observation plate 300. The rotating frame 500 is set on the lifting ring 400, which makes it possible to open the cleaning port 103 without the need to place a separate transparent observation window, which is safer, more environmentally friendly, and saves space. The side wall of the flange pipe 200 is provided with a rotating seat 600, and the rotating frame 500 is rotatably mounted on the rotating seat 600. This utility model can greatly improve the portability of cleaning operations by setting the cleaning port 103 and the openable transparent observation plate 300 on the storage tank 100. During the cleaning operation, you only need to open the transparent observation plate 300 to directly clean the inside of the tank without disassembling the complex structure, which greatly improves the cleaning efficiency and makes it convenient to view the inside of the storage tank 100 in real time.

[0023] According to one embodiment of the present invention, such as Figure 1-4As shown, the swivel base 600 has a U-shaped structure and is made of Q235 carbon steel. The two horizontal parts of the swivel base 600 are welded to the outer wall of the flange tube 200 to provide rotational support for the rotating frame 500. The rotating frame 500 is rotatably mounted on the swivel base 600. Specifically, each of the two horizontal parts of the swivel base 600 has a mounting hole 601. A bearing is installed in the mounting hole 601. The bearing is a deep groove ball bearing, model 6204, manufactured by Harbin Bearing Factory. Its outer ring is interference-fitted with the mounting hole 601, and its inner ring is interference-fitted with the vertical part of the rotating frame 500. The vertical part of the rotating frame 500 passes through the inner rings of the two bearings and is fixed together with the inner rings of the bearings, so that the rotating frame 500 can rotate flexibly around the swivel base 600.

[0024] The rotating frame 500 is L-shaped and made of Q235 carbon steel. A hook is provided at the horizontal end of the rotating frame 500. The hook is located directly above the lifting ring 400, and the lower part of the hook passes through the lifting ring 400. Through the cooperation of the hook and the lifting ring 400, the rotating frame 500 can drive the transparent observation plate 300 to rotate synchronously, realizing the opening and closing of the cleaning port 103. The hook can realize the fixed hanging operation of the rotating frame 500 and the lifting ring 400.

[0025] According to another embodiment of the present invention, such as Figure 1 and Figure 2 As shown, mounting holes 601 are provided on both horizontal parts of the swivel 600. Bearings are installed in the mounting holes 601. The vertical part of the rotating frame 500 passes through the inner rings of the two bearings and is fixed together with the inner rings of the bearings.

[0026] According to another embodiment of the present invention, such as Figure 1 and Figure 3 As shown, a pin hole 602 is provided on the vertical side wall of the rotating base 600, and a positioning hole 501 coaxial with the pin hole 602 is provided on the rotating frame 500. A positioning pin 700 is inserted into the pin hole 602 and the positioning hole 501. The rotation of the rotating frame 500 can be locked by inserting the positioning pin 700 into the pin hole 602 and the positioning hole 501. The positioning pin 700 is made of No. 45 steel and is used to fix the position of the rotating frame 500 when the transparent observation plate 300 is closed to prevent it from rotating accidentally and causing the seal to fail. By pulling out the positioning pin 700, the rotation of the rotating frame 500 can be realized to open and close the transparent observation window.

[0027] According to another embodiment of the present invention, such as Figure 1 and Figure 4As shown, a reinforcing rod 502 is provided between the horizontal and vertical parts of the rotating frame 500. The reinforcing rod 502 is made of Q235 carbon steel and is fixed to the rotating frame 500 by welding. This can enhance the structural strength of the rotating frame 500 and prevent deformation under stress. The reinforcing rod 502 also helps to improve the overall rigidity of the rotating frame 500.

[0028] According to another embodiment of the present invention, such as Figure 1 and Figure 2 As shown, the transparent observation plate 300 is connected to the flange end of the flange tube 200 by bolts and nuts. The bolts and nuts are made of 316 stainless steel, which is resistant to low temperatures and corrosion. This facilitates further reinforcement of the installation of the transparent observation window.

[0029] A sealing gasket is installed between the interior of the transparent observation panel 300 and the flange end. The sealing gasket is made of EPDM rubber, which has excellent low temperature resistance and sealing performance, and can effectively prevent LNG leakage, thus improving the overall sealing performance.

[0030] The storage tank 100 is also equipped with support legs 104 and lifting lugs 105 on its side wall. Support legs 104 facilitate the stable placement of the storage tank 100, and lifting lugs 105 facilitate the lifting and hoisting of the storage tank 100. Support legs 104 are made of Q345B low alloy high strength steel and are welded and fixed to the bottom of the storage tank 100 to support the storage tank 100 so that its axis is parallel to the placement surface. Lifting lugs 105 are made of Q345B material and are welded to both sides of the top of the storage tank 100 for lifting and transporting the tank container.

[0031] Working principle and usage of this utility model: First, it should be clarified that the storage tank 100 involved in this utility model is mainly used for the storage of gases and liquids. This utility model takes the storage of LNG and its self-loading, unloading and cleaning as an example to explain its working principle and usage method in detail. The working principle is as follows: The operation of this LNG tank container relies on the coordinated operation of an automated loading / unloading system and an observation and cleaning system. Automatic loading and unloading principle: When feeding, the pump is started and LNG is pumped into the storage tank 100 through the feed pipe 101. At this time, the liquid level change in the storage tank 100 can be observed through the transparent observation panel 300 to avoid overfeeding; when discharging, the discharge pump is started and the LNG in the storage tank 100 is discharged through the discharge pipe 102 under the action of the pump, realizing automatic unloading.

[0032] Observation principle: The transparent observation panel 300 is made of high-strength borosilicate glass, which allows direct observation of the liquid level, impurity deposition and frost inside the storage tank 100 without disassembling any parts, so as to monitor the internal status of the tank in real time and provide a basis for loading and unloading operations and maintenance.

[0033] Cleaning and opening / closing principle: When it is necessary to clean the inside of the storage tank 100, pull out the positioning pin 700 and rotate the L-shaped rotating frame 500. The rotating frame 500 rotates around the rotating seat 600 through the bearing. The hook on its horizontal part drives the lifting ring 400 and the transparent observation plate 300 to rotate synchronously, so that the cleaning port 103 is opened. After cleaning, rotate the rotating frame 500 in the opposite direction so that the transparent observation plate 300 is reset to the flange of the flange coil 200. Insert the positioning pin 700 through the pin hole 602 of the rotating seat 600 and the positioning hole 501 of the rotating frame 500 to fix the position of the rotating frame 500. At this time, the sealing gasket is pressed tight to ensure the sealing performance of the cleaning port 103.

[0034] The usage method is as follows: Feeding operation: Check whether the transparent observation panel 300 is closed and whether the positioning pin 700 is inserted tightly to ensure reliable sealing; connect the inlet of the pump to the LNG source and the outlet to the feed pipe 101; start the pump and observe the liquid level in the storage tank 100 through the transparent observation panel 300. When the liquid level reaches the preset value, turn off the pump to complete the feeding.

[0035] Discharge operation: Connect the outlet of the discharge pump to the unloading pipe and the inlet to the discharge pipe 102; start the discharge pump and observe the liquid level change in the storage tank 100 through the transparent observation panel 300. When the liquid level drops to the preset value, turn off the discharge pump to complete the discharge.

[0036] Observation operation: During the feeding and discharging process or in a static state, directly observe the liquid level, impurity accumulation and frost condition inside the storage tank 100 through the transparent observation panel 300. If any abnormalities are found, such as excessive impurities or abnormal frost, take timely action.

[0037] Cleaning operation: When it is observed that there are many impurities inside and cleaning is required, first ensure that the LNG in the storage tank 100 has been emptied and the pressure has dropped to a safe range; pull out the positioning pin 700, rotate the rotating frame 500 upwards, and drive the transparent observation plate 300 to rotate around the rotating seat 600, so that the cleaning port 103 is fully opened; use cleaning tools to clean the inside of the storage tank 100 through the cleaning port 103; after cleaning, rotate the rotating frame 500 in the opposite direction to reset the transparent observation plate 300 to the flange of the flange coil 200, insert the positioning pin 700 to fix it, and the cleaning is completed.

[0038] This utility model utilizes the pre-set cleaning port 103 on the storage tank 100, in conjunction with the transparent observation window and the rotating seat 600, to enable convenient and efficient viewing of the material inside the storage tank 100, while also enabling convenient and efficient cleaning operations. This solves the problems of difficult internal cleaning and inconvenient observation that exist in traditional storage tanks 100.

[0039] Furthermore, it should be noted that, in the description of this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0040] The above description is the preferred embodiment of this utility model. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the principle of this utility model, and these improvements and modifications should also be considered within the protection scope of this utility model.

Claims

1. An LNG tank container with automatic loading and unloading function, comprising a storage tank (100), wherein the axis of the storage tank (100) is parallel to the placement surface, and an inlet pipe (101) and an outlet pipe (102) connected thereto are provided on the side wall of the storage tank (100), wherein the inlet pipe (101) is matched with the outlet of a pump, and the storage tank (100) is matched with the inlet of a discharge pump, characterized in that: The storage tank (100) is also provided with a cleaning port (103) on its side wall. A flange pipe (200) communicating with the cleaning port (103) is provided on its axis. A transparent observation plate (300) is provided on the outside of the flange pipe (200). A lifting ring (400) is provided on the transparent observation plate (300). A rotating frame (500) is provided on the lifting ring (400). A rotating seat (600) is provided on the side wall of the flange pipe (200). The rotating frame (500) is rotatably mounted on the rotating seat (600).

2. The LNG tank container with automatic loading and unloading function as described in claim 1, characterized in that: The rotating base (600) has a U-shaped structure, and the two horizontal parts of the rotating base (600) are welded to the outer wall of the transparent coil.

3. The LNG tank container with automatic loading and unloading function as described in claim 2, characterized in that: The rotating frame (500) is L-shaped, and a hook is provided at the horizontal end of the rotating frame (500). The hook is located directly above the lifting ring (400), and the lower part of the hook passes through the lifting ring (400).

4. The LNG tank container with automatic loading and unloading function as described in claim 3, characterized in that: Mounting holes (601) are provided on both horizontal parts of the rotating base (600). Bearings are installed in the mounting holes (601). The vertical part of the rotating frame (500) passes through the inner rings of the two bearings and is fixed together with the inner rings of the bearings.

5. The LNG tank container with automatic loading and unloading function as described in claim 2, characterized in that: The vertical side wall of the rotating base (600) is provided with a pin hole (602), and the rotating frame (500) is provided with a positioning hole (501) coaxial with the pin hole (602). A positioning pin (700) is inserted into the pin hole (602) and the positioning hole (501).

6. The LNG tank container with automatic loading and unloading function as described in claim 2, characterized in that: A reinforcing rod (502) is provided between the horizontal and vertical parts of the rotating frame (500).

7. The LNG tank container with automatic loading and unloading function as described in claim 1, characterized in that: The transparent observation plate (300) is connected to the flange end of the flange tube (200) by bolts and nuts.

8. The LNG tank container with automatic loading and unloading function as described in claim 7, characterized in that: A sealing gasket is provided between the interior of the transparent observation plate (300) and the flange end.

9. The LNG tank container with automatic loading and unloading function as described in claim 1, characterized in that: The storage tank (100) is also provided with support legs (104) and lifting lugs (105) on its side wall.

Images