Large energy storage tank polyurethane insulation layer mobile foaming mold frame

Abstract

The application discloses a polyurethane heat preservation layer mobile foaming mold frame of a large energy storage tank and belongs to the technical field of foaming spraying. The application comprises a guide sliding rail, a plurality of circular arc plates are arranged in a circumferential direction and connected in a head-tail mode on a supporting ring on the outer surface of the energy storage tank body, a spraying supporting plate is arranged on the outer surface of the energy storage tank body in a concentric mode, a spraying cavity is formed between the spraying supporting plate and the outer wall of the energy storage tank body, sealing pieces are arranged on the front and back sides of the spraying cavity, a plurality of spraying openings are arranged on the spraying supporting plate and connected with external foaming supply equipment, and a movable clamping plate is arranged on the upper end of the spraying supporting plate and connected with the guide sliding rail. According to the application, the spraying mold frame is used to replace manual foaming spraying on the outer surface of the tank body, the spraying area and the spraying amount of each spraying area can be accurately controlled in the whole spraying process, the thickness of the heat preservation layer formed after each spraying is more uniform, and secondary planing of the heat preservation layer is not needed.

Description

Technical Field

[0001] This invention relates to a movable foaming mold frame for polyurethane insulation layer of large energy storage tanks, belonging to the field of foaming and spraying technology. Background Technology

[0002] Rigid polyurethane foam is a high-efficiency insulation material with low thermal conductivity, low water absorption, seamless construction, moderate strength, and convenient installation. It is widely used in insulation projects such as air conditioning chilled water systems, energy storage tanks, HVAC pipelines, and cold storage. For large tanks, a support ring is typically installed every 1 to 2 meters on the outer surface to improve the overall support strength of the tank. Construction workers are suspended in the designated position using the support rings or other auxiliary facilities to spray the insulation layer.

[0003] In existing technologies, foaming spraying for the outer surface of large storage tanks generally involves construction workers spraying foaming material layer by layer onto the outer surface of the tank, allowing it to react and solidify. However, after spraying in this way, the polyurethane expands irregularly due to the lack of boundary constraints, resulting in an uneven foamed surface with varying thickness. Therefore, it is necessary to cut the expanded foamed layer again to ensure the thickness of the foamed layer and the smoothness of the foamed surface. The entire process involves a large workload and leads to a significant waste of materials. Summary of the Invention

[0004] The technical problem to be solved by the present invention is to provide a movable foaming mold for polyurethane insulation layer of large energy storage tanks, which solves the problems of large workload and high material consumption in the construction of foam coating for large tanks in the prior art.

[0005] The technical problem to be solved by the present invention is achieved by the following technical solution: a movable foaming mold frame for polyurethane insulation layer of a large energy storage tank, including a guide rail, and several arc-shaped plates are arranged end to end in the circumferential direction on a support ring on the outer surface of the energy storage tank. A spraying support plate is concentrically mounted on the outer surface of the energy storage tank. The spraying support plate and the outer wall of the energy storage tank form a spraying cavity. The front and rear openings of the spraying cavity are equipped with sealing elements. The spraying support plate is provided with several spraying nozzles, which are connected to an external foaming supply device. An active tray is located at the upper end of the spraying support plate and is connected to the guide rail.

[0006] By adopting the above technical solution, a spraying support plate is set on the outer surface of the energy storage tank to form a spraying cavity. This allows the expansion of the foam spraying to be limited by the spraying cavity. During construction, the thickness of the insulation layer at predetermined points can be accurately controlled each time it is sprayed, preventing uneven thickness of the expanded insulation layer. This avoids the need to re-shave the insulation layer on the surface of the tank, reducing the amount of work involved in the entire process and improving construction efficiency.

[0007] The present invention is further configured such that: the guide rail has a U-shaped cross-section with the U-shaped opening facing upward, and its U-shaped bottom surface is provided with a plurality of countersunk through holes and is connected to the support ring by bolts through the countersunk through holes.

[0008] By adopting the above technical solution, the U-shaped guide rail can be used as the connection point for the spraying support plate to install the spraying support plate. Furthermore, when spraying at different heights, it can be disassembled and installed at different heights for reuse, thereby reducing costs.

[0009] The present invention is further configured such that the guide rail is made of plastic material by injection molding.

[0010] By adopting the above technical solution, the overall design is lighter, easier to install, and has lower subsequent maintenance and replacement costs.

[0011] The present invention is further configured such that: the guide rail includes an upper ring and a lower ring, and a plurality of cylindrical clips are circumferentially spaced between the upper ring and the lower ring; a receiving plate is provided on the outer surface of the spraying support plate; a drive motor is provided inside the receiving plate; and the drive shaft of the drive motor extends downward out of the receiving plate and is fixed at the end with a transmission component.

[0012] By adopting the above technical solution, compared with manually adjusting the position of the spraying support plate, the spraying point can be moved by controlling the spraying support plate with a drive motor. The moving angle is more accurate, and the size of the area to be sprayed each time can be better controlled, thereby improving the uniformity of spraying.

[0013] The present invention is further configured such that: the transmission component includes a circular block connected to the drive shaft and a plurality of actuating rods disposed on the outer surface of the circular block, the ends of the actuating rods extending between the cylindrical retaining bars.

[0014] By adopting the above technical solution, the setting of the toggle rod and the cylindrical locking strip enables the spraying support plate to rotate stably along the outer surface of the energy storage tank. When the spraying support plate needs to be kept stationary, it can be limited by the limit between the toggle rod and the cylindrical locking strip to prevent the spraying support plate from moving.

[0015] The present invention is further configured such that: the actuating lever is conical, and its cross-sectional diameter gradually increases from the end connected to the circular block outwards, with the outermost end having the largest cross-sectional diameter.

[0016] By adopting the above technical solution, the transmission process is made more stable. After the actuating rod separates from the cylindrical clamp, the subsequent actuating rod can promptly abut against the subsequent cylindrical clamp and push the spraying support plate to move, avoiding the occurrence of intermittent gaps without contact between the actuating rod and the cylindrical clamp, so that the spraying support plate always maintains power propulsion when it moves.

[0017] The invention is further configured such that: the movable plate has an L-shaped cross-section, the movable plate has two through guide holes, a threaded hole is provided between the two guide holes, a guide rod is provided in the guide hole, the lower end of the guide rod is fixed to the upper end of the spraying support plate, an adjusting screw is provided in the threaded hole, and the lower end of the adjusting screw is rotatably connected to the upper end of the spraying support plate.

[0018] By adopting the above technical solution, during the installation of the spraying support plate, the distance between the movable clamping plate and the spraying support plate can be adjusted by turning the knob to adjust the screw. After the spraying support plate abuts against the support ring, the upper end of the spraying support plate can be clamped onto the support ring by the movable clamping plate, thereby realizing the rapid installation of the spraying support plate.

[0019] The present invention is further configured such that: a baffle is provided between the movable card plate and the spraying support plate, and an adjusting nut is rotatably provided below the baffle.

[0020] By adopting the above technical solution, it is easy to install the sprayed support plate on the energy storage tank with a large height difference of the support ring.

[0021] The present invention is further configured such that a layer of removable fiberglass cloth is provided on the surface of both the sealing element and the spraying support plate.

[0022] By adopting the above technical solution, after wrapping the seal with fiberglass cloth, when the seal expands and seals one end of the spray plate for grouting, it can avoid the foamed grout from directly contacting the surface of the seal after expansion, causing the foam to stick to the surface of the seal. At the same time, the fiberglass cloth can be replaced during subsequent maintenance and repair.

[0023] The beneficial effects of this invention are: The spraying cavity formed by the spraying support plate on the surface of the energy storage tank can constrain the foaming expansion during the foaming process, making the surface of the insulation layer formed after expansion smoother. It eliminates the need for secondary manual leveling, reduces certain construction steps, and improves construction efficiency.

[0024] The spraying support plate is set on the surface of the storage tank via guide rails. During the spraying process, the entire foaming spraying can be controlled by adjusting the angle of each slide and the amount of foaming spray supplied by the external foaming spraying equipment. This ensures that the area sprayed each time is relatively similar and the amount of foam sprayed is similar, further controlling the thickness of the entire insulation layer. This avoids excessive foaming spraying, which would lead to increased material consumption. The spraying support plate can also be moved to change the spraying point, allowing for targeted respraying later, ensuring that the insulation layer thickness is relatively uniform at each point of the energy storage tank. Attached Figure Description

[0025] Figure 1This is a three-dimensional structural diagram of the spraying support plate of the present invention installed on the energy storage tank. Figure 2 For the present invention Figure 1 Enlarged schematic diagram of the structure at point A in the middle; Figure 3 This is a schematic diagram of the three-dimensional structure of the spraying mold frame of the present invention; Figure 4 This is a schematic diagram of the three-dimensional structure of the spraying mold frame according to another embodiment of the present invention; Figure 5 This is a schematic diagram of the three-dimensional structure of the spraying mold frame according to another embodiment of the present invention; Figure 6 This is a schematic diagram of the thermal insulation layer formation structure under the spraying state of the present invention; Figure 7 This is a schematic diagram of the three-dimensional structure of the spraying support plate in another embodiment of the present invention.

[0026] In the diagram: 1. Energy storage tank; 2. Support ring; 3. Guide rail; 301. Upper ring; 302. Lower ring; 303. Cylindrical retaining strip; 4. Spraying support plate; 401. Spray nozzle; 402. Arc-shaped sealing plate; 5. Spraying cavity; 6. Transmission component; 601. Circular retaining block; 602. Actuating rod; 7. Pressure plate; 8. Support plate; 9. Drive motor; 10. Sealing component; 11. Movable retaining plate; 12. Baffle; 13. Guide rod; 14. Adjusting screw; 15. Elastic component; 16. Adjusting nut. Detailed Implementation

[0027] To facilitate a clear understanding of the technical means, creative features, objectives, and effects of this invention, the invention will be further described below in conjunction with specific illustrations.

[0028] Example 1: like Figure 1 and Figure 2As shown, a movable foaming mold frame for polyurethane insulation layer of a large energy storage tank includes a guide rail 3 set on the outer surface of the energy storage tank 1. Depending on the specifications of the energy storage tank 1, a support ring 2 is set every one or two meters in the vertical direction of the energy storage tank 1. The specific connection between the support ring 2 and the energy storage tank 1 can be fixed by welding or bolt connection. In this embodiment, the support ring 2 and the energy storage tank are connected by welding with several connecting blocks. The guide rail 3 is fixed on the support ring 2. The spraying support plate 4 is installed through the guide rail 3. The spraying support plate 4 is an arc-shaped structure concentrically set with the energy storage tank 1. An arc-shaped sealing plate 402 extends inward from the upper and lower ends of the plate and fits against the outer surface of the energy storage tank 1. The spraying support plate 4 and the energy storage tank 1 form a spraying cavity 5 for foaming expansion. The front and rear sides of the spraying cavity 5 are open. A sealing element 10 is fixed at the front opening position through the spraying support plate 4. The sealing element 10 is a rectangular sealing plate that is rotatably connected to the side of the spraying support plate 4. After the spraying support plate 4 is installed on the energy storage tank 1, it can rotate freely to fit against the energy storage tank 1 and seal the two openings of the spraying cavity 5.

[0029] By setting a spraying support plate 4 on the outer surface of the energy storage tank 1 to form a spraying cavity 5, the expansion of the foam spraying can be limited by the spraying cavity 5. During construction, the thickness of the insulation layer at a predetermined point can be accurately controlled each time it is sprayed, preventing the insulation layer from being uneven in thickness after expansion. This avoids the need to re-shave the insulation layer on the surface of the energy storage tank 1, thus improving construction efficiency.

[0030] like Figure 2 and Figure 3 As shown, a movable clamping plate 11 is installed on the upper end of the spraying support plate 4. The movable clamping plate 11 has an L-shaped cross section and two through guide holes are provided on the movable clamping plate 11. A threaded hole is provided between the two guide holes. A guide rod 13 is provided in the guide hole. The lower end of the guide rod 13 is fixed to the upper end of the spraying support plate 4. An adjusting screw 14 is provided in the threaded hole. The lower end of the adjusting screw 14 is rotatably connected to the upper end of the spraying support plate 4.

[0031] The guide rail 3 has a U-shaped cross section with the U-shaped opening facing upwards. The bottom surface of the U-shape has multiple countersunk through holes, which are connected to the support ring 2 by bolts.

[0032] By adopting the above technical solution, the U-shaped guide rail 3 can be used as the connection point for the spraying support plate 4 to install the spraying support plate 4. Furthermore, when spraying at different heights, it can be disassembled and installed at different heights for reuse, thereby reducing costs.

[0033] The guide rail 3 is injection molded from plastic. Made from lightweight plastic, it is easier to install and reduces subsequent maintenance and replacement costs.

[0034] Example 2: In another embodiment, such as Figure 4 and Figure 5 As shown, the sealing element 10 is specifically an inflatable airbag. By controlling the expansion of the sealing element 10, the front opening of the spraying cavity 5 can be sealed. A pressure plate 7 is provided at the rear opening. The pressure plate 7 is located entirely inside the spraying cavity 5. The pressure plate 7 and the spraying support plate 4 are concentrically arranged, and a buffer gap is provided between them. Multiple elastic elements 15 are evenly distributed inside the buffer gap. Each elastic element 15 is equipped with a sensor that detects the change in the pressure it receives. The sensor is connected to a signal receiving device. In addition, at least two spray nozzles 401 for spraying foam are provided on the spraying support plate 4.

[0035] During the specific spraying process, such as Figure 6 and Figure 7 As shown, firstly, the spraying support plate 4 is fixed on the energy storage tank 1 via the guide slide rail 3. After selecting the initial spraying point, the sealing element 10 is expanded to seal the front opening of the spraying cavity 5. By connecting the spraying pipe on the external spraying equipment to the spraying port 401, the spraying pipe is controlled to deliver polyurethane into the spraying cavity 5. During the initial spraying, a small amount of spraying is controlled and sprayed multiple times. After each spraying is completed, the spraying support plate 4 is moved so that the foaming expansion area is aligned with the pressure plate 7. This is repeated and adjusted until the foaming expansion on the energy storage tank 1 at that point reaches the predetermined pressure applied to the pressure plate 7. The initial spraying is then completed and the total spraying amount is recorded. The predetermined pressure value depends on the height and total volume of the energy storage tank 1. The larger the tank, the thicker the required surface foam insulation layer.

[0036] After the initial spraying is completed, first release the expansion of the seal 10, move the spraying support plate 4 so that the pressure plate 7 on the spraying support plate 4 moves to the position of the insulation layer that has expanded and formed after the initial spraying and foaming. The insulation layer at this point will adhere to the inner surface of the pressure plate 7 and push the pressure plate 7 closer to the spraying support plate 4, thereby sealing the rear opening of the spraying cavity 5. At this time, control the seal 10 to expand again, and finally form a completely sealed spraying cavity 5. Control the external spraying equipment to deliver polyurethane foam material into the spraying cavity 5 again. The amount of spraying should be less than the total amount of foaming recorded during the initial spraying. After the spraying is completed, control the spraying support plate 4 to move to the spraying point and wait for the foam to expand. After the foam expansion is completed, observe the data detected by the sensor and compare the pressure readings at each sensor point. It should be ensured that the pressure readings of more than two-thirds of the sensors meet the standard predetermined value. After the second point is sprayed, the amount of sprayed material at this point is recorded again. At the same time, the spraying support plate 4 is moved to the third point for spraying. At this time, the foam sprayed at the second point expands and adheres to the pressure plate 7 to form a seal again. It is then sealed with the sealing element 10 at the front end of the spraying cavity 5. The spraying cavity 5 is sealed again and foam spraying is performed. This process is repeated until the circumferential surface of the energy storage tank 1 at this height is completely sprayed. Then, the spraying support plate 4 is disassembled and reassembled to the next layer height of the energy storage tank 1. At this time, the spraying is performed with reference to the single spraying amount of the lower layer of foam until all areas of the outer surface of the energy storage tank 1 are sprayed.

[0037] In the above embodiment, the spraying cavity 5 is formed by the spraying support plate 4 and the outer surface of the energy storage tank 1 for foam spraying. Each time the foam expands after spraying, it is limited by the cavity, thus preventing excessive expansion and the need for subsequent leveling and cutting. Simultaneously, throughout the entire foam spraying process, the spraying amount can be controlled simply by comparing the pressure on the pressure plate 7, achieving relatively uniform foam spraying, thereby effectively improving spraying efficiency and reducing construction requirements. Compared to traditional manual spraying, construction personnel do not need extensive experience to complete the work, and because secondary cutting and leveling are unnecessary, the aesthetic appearance after spraying is higher, and the overall construction cycle is shortened.

[0038] Example 3: This embodiment is based on the first embodiment and the second embodiment, and further illustrates the movement mode of the spraying support plate 4. That is, the implementation method of the guide rail 3 in this embodiment can be applied to the first embodiment and the second embodiment.

[0039] like Figure 1 and Figure 3As shown, in this embodiment, the guide rail 3 includes an upper ring 301 and a lower ring 302 fixed on the support ring 2. Multiple cylindrical clips 303 are equidistantly installed between the upper ring 301 and the lower ring 302, with a certain interlocking gap reserved between each cylindrical clip 303. Meanwhile, a receiving plate 8 is welded to the outer surface of the spraying support plate 4. A drive motor 9 is installed on the receiving plate 8. The lower end of the drive shaft on the drive motor 9 extends out of the receiving plate 8 and a circular clip 601 is fixedly installed at the end. Multiple actuating rods 602 are fixedly inserted into the circular locking block 601. The outer ends of the actuating rods 602 extend into the gaps between the cylindrical locking strips 303. The actuating rods 602 are rotated by the drive motor 9, so that the actuating rods 602 abut against the corresponding cylindrical locking strips 303. As the actuating rods 602 continue to rotate, the counter-thrust force from the cylindrical locking strips 303 pushes the actuating rods 602 forward, thereby causing the entire spraying support plate 4 to slide along the circumferential direction of the outer surface of the energy storage tank 1.

[0040] In this embodiment, by employing automated drive to move the spraying support plate 4, the rotation angle of the spraying support plate 4 can be controlled more accurately each time, thereby better coordinating with the external spraying equipment to set the foaming spraying amount and more accurately controlling the thickness of the insulation layer on the outer surface of the energy storage tank 1. On the other hand, when the drive motor 9 is stopped, the end of the toggle lever 602 can be locked between the cylindrical locking strips 303 to limit the position of the spraying support plate 4, thereby preventing the spraying support plate 4 from shifting position during the spraying process.

[0041] More specifically, in this embodiment, the lever 602 is generally conical, and its cross-sectional diameter gradually increases from the end inserted into the circular block to the outer end. The cross-sectional diameter is largest at the end position between the cylindrical clips 303, and smallest at the end connected to the circular block.

[0042] In other embodiments, the cross-section of the actuating lever 602 can also be square or elliptical. This application does not completely limit its specific structure, but only provides a commonly used solution in actual use. In the above solution, by setting the actuating lever 602 into a conical structure, its end located in the gap of the cylindrical retaining strip 303 can achieve a smoother transition during rotation. Moreover, since its cross-sectional diameter increases sequentially, when it abuts against the cylindrical retaining strip 303 and is subjected to a reverse pushing force, the contact time is longer, which can achieve a more stable transition and prevent the situation of spinning without thrust during rotation.

[0043] In a specific embodiment, the movable plate 11 has an overall arc shape and an L-shaped cross-section. It includes a horizontal part and a vertical part that are integrally connected. Two guide holes are opened on the horizontal part, and a guide rod 13 is inserted into the guide holes. The lower end of the guide rod 13 is fixed to the upper end of the spraying support plate 4. The entire movable plate 11 can slide up and down along the guide rod 13. At the same time, a threaded hole is opened between the two guide holes. An adjusting screw 14 is threadedly connected to the threaded hole. The lower end of the adjusting screw 14 is rotatably connected to the upper end of the spraying support plate 4.

[0044] The movable plate 11 is inserted into the upper guide rail 3. The height between the movable plate 11 and the spraying support plate 4 is adjusted by turning the knob and adjusting the nut 16, thus completing the limiting of the upper end of the spraying support plate 4.

[0045] It should be noted that, under normal circumstances, the height of the spraying support plate 4 should be adapted to the distance between the two support rings 2 on the energy storage tank 1. That is, the height of the spraying cavity 5 formed between the spraying support plate 4 and the outer surface of the energy storage tank 1 should be exactly equal to the height difference between the two support rings 2. If the height difference between the two support rings 2 is less than the height of the spraying support plate 4, a spraying support plate 4 with a smaller height should be selected for construction. If the height difference between the two support rings 2 is much greater than the maximum height of the spraying support plate 4, a spraying support plate 4 with the largest height should be selected for construction. In this case, the outer surface of the tank between the two support rings 2 needs to be sprayed with at least two circular sprays. The lengths of the adjusting screw 14 and the guide rod 13 are selected according to the specific construction conditions. When the height between the two support rings 2 is much greater than the height of the entire spraying support plate 4, a longer adjusting screw 14 and guide rod 13 are selected for installation. Different lengths of adjusting screw 14 and guide rod 13 allow the spraying support plate 4 to be adapted to be installed on energy storage tanks 1 of different heights.

[0046] like Figure 7 As shown, based on the above situation, when the maximum height of the spraying support plate 4 is much smaller than the height difference between the two support rings 2, an additional lower baffle 12 is added below the movable clamping plate 11. At the same time, an adjusting nut 16 is rotatably abutted below the lower baffle 12. When the spraying support plate 4 is installed, the movable support plate and the lower baffle 12 are adjusted to clamp the support ring 2 and the guide rail 3 between them. While ensuring that vertical movement does not cause the movable clamping plate 11 to disengage from the guide rail 3, a certain amount of movement gap is reserved for the subsequent sliding of the spraying support plate 4.

[0047] Based on the above embodiments, a layer of fiberglass cloth is fitted on the sealing element 10, the spraying support plate 4, and the pressure plate 7 to prevent the foam from sticking together and being difficult to remove. The maximum volume of the fiberglass cloth on the sealing element 10 is equal to the volume of the sealing element 10 after expansion. That is, after the sealing element 10 expands, it can just support the fiberglass cloth on its outside. After the sealing element 10 expands, it supports the fiberglass cloth and fits it against the surface of the tank and the inner surface of the spraying support plate 4 to seal the opening at that end.

[0048] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments, and various changes and modifications can be made without departing from the spirit and scope of the invention, all of which fall within the scope of protection claimed by the present invention. The scope of protection of the present invention is defined by the appended claims and their equivalents.

Claims

1. A mobile foaming mold frame for polyurethane insulation of large energy storage tanks, characterized in that, include: The guide rail (3) is composed of several arc-shaped plates connected end to end in the circumferential direction on the support ring (2) on the outer surface of the energy storage tank (1); A spraying support plate (4) is concentrically disposed on the outer surface of the energy storage tank (1). The spraying support plate (4) and the outer wall of the energy storage tank (1) form a spraying cavity (5). The spraying cavity (5) has openings on the front and rear sides with sealing elements (10). The spraying support plate (4) is provided with several spraying nozzles (401). The spraying nozzles (401) are connected to an external foaming supply device. The movable plate (11) is set on the upper end of the spraying support plate (4) and connected to the guide rail (3).

2. The mobile foaming mold frame for the polyurethane thermal insulation layer of a large energy storage tank according to claim 1, characterized in that: The guide rail (3) has a U-shaped cross section with the U-shaped opening facing upwards. The bottom surface of the U-shaped rail is provided with multiple countersunk through holes, and the countersunk through holes are connected to the support ring (2) by bolts.

3. The mobile foaming mold frame for the polyurethane thermal insulation layer of a large energy storage tank according to claim 2, characterized in that: The guide rail (3) is made of plastic injection molding.

4. The mobile foaming mold frame for the polyurethane thermal insulation layer of a large energy storage tank according to claim 1, characterized in that: The guide rail (3) includes an upper ring (301) and a lower ring (302). Multiple cylindrical clips (303) are equidistantly arranged on the circumference between the upper ring (301) and the lower ring (302). A receiving plate (8) is provided on the outer surface of the spraying support plate (4). A drive motor (9) is provided on the receiving plate (8). The drive shaft of the drive motor (9) extends downward out of the receiving plate (8) and a transmission component (6) is fixed at the end.

5. The mobile foaming mold frame for the polyurethane thermal insulation layer of a large energy storage tank according to claim 4, characterized in that: The transmission component (6) includes a circular block (601) connected to the drive shaft and a plurality of actuating rods (602) disposed on the outer surface of the circular block (601), the ends of the actuating rods (602) extending between the cylindrical retaining bars (303).

6. A mobile foaming mold frame for polyurethane insulation of large energy storage tanks according to claim 5, characterized in that: The lever (602) is conical, and its cross-sectional diameter gradually increases from the end connected to the circular block (601) outwards, with the outermost end having the largest cross-sectional diameter.

7. A mobile foaming mould for polyurethane thermal insulation of large energy storage tanks according to claim 2 or 4, characterized in that: The movable plate (11) has an L-shaped cross section. The movable plate (11) is provided with two through guide holes and a threaded hole between the two guide holes. A guide rod (13) is provided in the guide hole. The lower end of the guide rod (13) is fixed to the upper end of the spraying support plate (4). An adjusting screw (14) is provided in the threaded hole. The lower end of the adjusting screw (14) is rotatably connected to the upper end of the spraying support plate (4).

8. A mobile foaming mold frame for polyurethane insulation of large energy storage tanks according to claim 7, characterized in that: A baffle (12) is also provided between the movable card plate and the spraying support plate, and an adjusting nut (16) is rotatably provided below the baffle (12).

9. The mobile foaming mold frame for polyurethane thermal insulation layer of large energy storage tank according to claim 1, characterized in that: Both the sealing element (10) and the spraying support plate (4) are provided with a layer of removable fiberglass cloth.

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