Low-temperature ethylene full-capacity storage tank door opening welding plugging structure

Abstract

The invention relates to the technical field of storage tank construction, in particular to a low-temperature ethylene full-capacity storage tank door opening welding plugging structure which comprises a storage tank door opening, a hot corner protection wall plate, foam glass bricks and an outer tank wall plate, and upper E-shaped supports are welded to the outer walls of the two sides of the storage tank door opening. On the premise that the cold insulation effect is guaranteed, the construction efficiency and the construction safety coefficient are greatly improved, potential safety hazards in the welding process in a closed and narrow space are reduced, the defect that cold insulation filling at the outer tank temporary door opening wall plate weld joint is not solid, and cold penetration is likely to be caused is effectively overcome, and the service life of the outer tank temporary door opening wall plate weld joint is prolonged. And through the arrangement of an upper E-shaped support, a lower E-shaped support, a mounting disc, a T-shaped frame and other structures, the supporting effect can be provided during welding of the hot corner protection wall plate and the outer tank wall plate, meanwhile, the supporting position can be flexibly adjusted, it is ensured that the hot corner protection wall plate and the outer tank wall plate are accurately welded to the storage tank door opening, and the convenience performance in the plugging process is improved.

Description

Technical Field

[0001] The invention relates to the technical field of storage tank construction, in particular to a door opening welding sealing structure of a low-temperature ethylene full-capacity storage tank. Background Art

[0002] The door opening of the low-temperature ethylene full-containment storage tank is an opening reserved during the construction of the tank. It is mainly used for the entry and exit of construction personnel and equipment, as well as the transportation of construction materials. The existence of the door opening makes the construction process more convenient, especially when welding, installing and inspecting inside the tank. It provides necessary channels. After the construction of the tank is completed, the door opening of the low-temperature ethylene full-containment storage tank needs to be sealed. The purpose is to ensure the structural integrity and sealing of the tank, prevent leakage of low-temperature media, and ensure construction quality and safety. The existing door opening sealing construction usually adopts a construction sequence from the outside to the inside, that is, first install the outer tank wall panel, then lay the sandwich tank wall foam glass bricks, and finally install the thermal corner protection wall panel.

[0003] Because the mezzanine area is narrow, sealed and dim, construction workers need to operate in an extremely limited space, which not only increases the difficulty of construction, but also reduces the safety factor of construction. Especially when welding hot corner protection wall panels, construction workers need to weld in a narrow mezzanine, which can easily lead to reduced welding quality due to fatigue and inconvenience in operation. In addition, when welding hot corner protection wall panels, it is usually necessary to manually support the wall panels to ensure their accurate position. This operation is not only inefficient, but also increases the labor intensity and safety risks of construction workers. Especially during the welding process, the wall panels are heavy and easily displaced due to factors such as thermal expansion, requiring continuous support from construction workers, further reducing construction efficiency.

[0004] Therefore, a low-temperature ethylene full-capacity storage tank door opening welding sealing structure is proposed to solve the above problems. Summary of the Invention

[0005] The purpose of the present invention is to solve the shortcomings of the background technology and to propose a welding sealing structure for the door opening of a low-temperature ethylene full-capacity storage tank.

[0006] To achieve the above purpose, the technical solution adopted by the present invention is: a low-temperature ethylene full-capacity storage tank door opening welding sealing structure, including a storage tank door opening, a thermal corner protection wall panel, a foam glass brick and an outer tank wall panel, upper E-shaped brackets are welded on the outer walls on both sides of the storage tank door opening, and a lower E-shaped bracket is welded on the outer wall above the storage tank door opening, and a fixed frame is provided next to the upper E-shaped bracket and the lower E-shaped bracket, and a sliding frame is slidably connected to the inner side of the fixed frame, and a T-shaped frame is slidably connected between the sliding frames, and the connection point of the T-shaped frame passes through and is slidably connected to a round rod, and a mounting disk is provided at the rear end of the round rod, and an annular groove is opened on the side wall of the mounting disk, and a pair of semi-circular electromagnets are fixedly connected in the annular groove, and a fixing structure for fixing the position of the mounting disk is provided in the T-shaped frame; When sealing, first use the electromagnet on the mounting plate to position and support the hot corner protection wall panel and weld it to the inner side of the tank door opening, then directly stick the foam glass bricks on the hot corner protection wall panel, and then stick a layer of glass wool on the foam glass bricks at the tank door opening. Finally, use the mounting plate again to position and support the outer tank wall panel on the tank door opening, perform positioning welding, and the sealing is completed.

[0007] In the above technical solution, further, reset springs are fixedly connected between the upper and lower sides of the fixed frame and the outer wall of the sliding frame, and the side walls of the fixed frame are fixedly connected with a pair of L-shaped plugs for inserting into the inner sides of the upper E-shaped bracket and the lower E-shaped bracket.

[0008] In the above technical solution, further, the fixed structure includes a locking block, the inner sides of the three branches of the T-shaped frame are slidably connected with T-shaped blocks, and the front side of the T-shaped block is arranged through the outer wall of the T-shaped frame, the outer wall of the round rod is fixedly connected with three connecting plates, and the connecting plates are fixedly connected to the side walls of the T-shaped block, the T-shaped frame is fixedly connected with a bottom frame at a position below the round rod, the locking block is slidably connected to the inner side of the bottom frame, the bottom end of the round rod is provided with a locking groove adapted to the locking block, an upper spring is fixedly connected between the inner bottom end of the bottom frame and the bottom of the locking block, and a number of card slots are provided on the inner side of the fixed frame at equal distances from the position next to the T-block.

[0009] In the above technical solution, further, the bottom end of the locking block is fixedly connected to a pull rod, and the bottom end of the pull rod is arranged through the bottom end of the bottom frame, a number of lower springs are fixedly connected between the inner side of the T-shaped frame and the side wall of the connecting plate, and the inner side of the sliding frame is provided with a slot adapted to the side end of the T-shaped block.

[0010] In the above technical solution, further, the front end of the round rod is fixedly connected to a front plate, a return spring is fixedly connected between the front plate and the outer wall of the T-shaped frame, and a pull ring is fixedly connected to the front side of the front plate.

[0011] In the above technical solution, further, a connecting rod is provided on the rear side of the round rod, and a threaded groove is provided on the connecting rod and the rear side of the round rod. The connecting rod and the front side of the mounting plate are fixedly connected with a threaded block, and the mounting plate is threadedly connected to the threaded groove on the connecting rod through the threaded block, and the connecting rod is threadedly connected to the threaded groove on the round rod through the threaded block.

[0012] In the above technical solution, further, a pair of guide blocks are fixedly connected to the outer wall of the round rod, and a guide groove adapted to the guide block is opened on the outer wall of the T-shaped frame, and the guide block is slidably connected to the inner side of the guide groove.

[0013] In the above technical solution, further, a plurality of magnetic mounting grooves are equidistantly provided on the outer wall of the mounting plate, an iron block is inserted into one of the magnetic mounting grooves, the outer wall of the iron block is fixedly connected to a top plate, a screw is threaded through the side wall of the top plate, the side wall of the screw is rotatably connected to an arc plate, and the side walls of the arc plate are fixedly connected to guide plates relative to both sides of the top plate.

[0014] Compared with the prior art, the present invention has the following beneficial effects: 1. The present invention adopts an inside-out construction method, which greatly improves the construction efficiency and construction safety factor while ensuring the cold insulation effect, reduces the safety hazards in the welding process of closed and narrow spaces, and effectively solves the problem that the cold insulation filling at the weld of the temporary door opening wall plate of the outer tank is not solid and easily causes cold penetration. In addition, through the arrangement of structures such as the upper E-shaped bracket, the lower E-shaped bracket, the mounting plate and the T-shaped frame, a support effect can be provided when the hot corner protection wall plate and the outer tank wall plate are welded. At the same time, the support position can be flexibly adjusted to ensure that the hot corner protection wall plate and the outer tank wall plate are accurately welded to the tank door opening, thereby improving the convenience performance during the sealing process.

[0015] 2. The present invention, through the arrangement of structures such as iron blocks, screws and curved plates, can squeeze the thermal corner protection wall panel or the outer tank wall panel when it is supported on the tank door opening, and adjust the distance between it and the mounting plate, thereby adjusting the horizontal position of the thermal corner protection wall panel or the outer tank wall panel, ensuring that the thermal corner protection wall panel or the outer tank wall panel is in an accurate welding position, ensuring the sealing effect of the tank door opening, and increasing the flexibility of the supporting equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a schematic diagram of the front three-dimensional structure of the storage tank door opening of the present invention; Figure 2 It is a schematic diagram of a partial side full-section three-dimensional structure of the storage tank door after being blocked according to the present invention; Figure 3 The appended Figure 1 A schematic diagram of the partially enlarged structure at center A; Figure 4This is a schematic diagram of the rear perspective structure of the T-shaped frame, upper E-shaped bracket and lower E-shaped bracket of the present invention; Figure 5 The appended Figure 4 A schematic diagram of the partially enlarged structure at point B in the middle; Figure 6 It is a schematic diagram of a partial side full-section three-dimensional structure of the T-shaped frame and the mounting plate of the present invention; Figure 7 It is a partially cutaway bottom-up perspective structural diagram of the round rod, locking block and T-shaped plate of the present invention; Figure 8 It is a schematic diagram of the partial three-dimensional structure of the fixing frame and T-shaped frame of the present invention; Figure 9 This is a schematic diagram of the overall appearance structure of the curved plate and iron block of the present invention.

[0017] In the figure: 1. Storage tank door opening; 2. Thermal corner protection wall panel; 3. Foam glass brick; 4. Outer tank wall panel; 5. Upper E-type bracket; 6. Lower E-type bracket; 7. Fixed frame; 8. Sliding frame; 9. T-type frame; 10. Round rod; 11. Mounting plate; 12. Electromagnet; 13. Glass wool; 14. Reset spring; 15. L-type plug-in plate; 16. Lock block; 17. T-type block; 18. Connecting plate; 19. Bottom frame; 20. Lock slot; 21. Upper spring; 22. Pull rod; 23. Lower spring; 24. Slot; 25. Front plate; 26. Return spring; 27. Pull ring; 28. Connecting rod; 29. ​​Threaded block; 30. Guide block; 31. Magnetic mounting slot; 32. Iron block; 33. Top plate; 34. Screw; 35. Arc plate; 36. Guide plate. DETAILED DESCRIPTION

[0018] In order to more clearly understand the above-mentioned objects, features and advantages of the present invention, the present invention is further described in detail below with reference to the accompanying drawings and specific embodiments.

[0019] In the following description, many specific details are set forth to facilitate a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0020] In actual use, it was found that due to the narrow, sealed and dim interlayer area, construction workers need to operate in an extremely limited space, which not only increases the difficulty of construction, but also reduces the safety factor of construction. In particular, when welding the hot corner protection wall panels 2, construction workers need to weld in a narrow interlayer, which can easily lead to a decline in welding quality due to fatigue and inconvenience in operation. In addition, when welding the hot corner protection wall panels 2, it is usually necessary to manually support the wall panels to ensure their accurate position. This operation is not only inefficient, but also increases the labor intensity and safety risks of construction workers. In particular, during the welding process, the wall panels are heavy and easily displaced due to factors such as thermal expansion. Construction workers need to continuously support them, which further reduces construction efficiency. In order to solve the above problems, the following structure is specially invented.

[0021] like Figures 1-9 The illustrated structure comprises a low-temperature ethylene full-containment storage tank door opening welding plugging structure, comprising a storage tank door opening 1, a thermal corner protection wall panel 2, a foam glass brick 3 and an outer tank wall panel 4. Upper E-shaped brackets 5 are welded to the outer walls on both sides of the storage tank door opening 1, and a lower E-shaped bracket 6 is welded to the outer wall above the storage tank door opening 1. Fixed frames 7 are provided next to the upper E-shaped brackets 5 and the lower E-shaped brackets 6. Sliding frames 8 are slidably connected to the inner sides of the fixed frames 7. T-shaped frames 9 are slidably connected between the sliding frames 8. A round rod 10 is slidably connected to the connection point of the T-shaped frame 9. A mounting plate 11 is provided at the rear end of the round rod 10. An annular groove is provided on the side wall of the mounting plate 11. A pair of semi-circular electromagnets 12 are fixedly connected in the annular groove. A fixing structure for fixing the position of the mounting plate 11 is provided in the T-shaped frame 9. When sealing, first use the electromagnet 12 on the mounting plate 11 to position and support the hot corner protection wall panel 2 and weld it to the inside of the tank door opening 1, then directly stick the foam glass brick 3 on the hot corner protection wall panel 2, and then stick a layer of glass wool 13 on the foam glass brick 3 at the tank door opening 1. Since the outer tank wall panel 4 is relatively thick and the reserved door opening size is relatively short, the welds are more concentrated, which results in the deformation at the weld being difficult to control after the wall panel is welded, resulting in a gap between the contact surface of the outer tank wall panel 4 and the foam glass brick 3. A 33cm thick layer of glass wool 13 is pasted on the foam glass brick 3 to effectively fill the deformation caused by welding. The gap between the outer tank wall plate 4 and the foam glass brick 3 is finally positioned and supported on the tank door opening 1 by the mounting plate 11 again, and positioning welding is performed to complete the sealing. Through the construction method from the inside to the outside, while ensuring the cold insulation effect, the construction efficiency and construction safety factor are greatly improved, and the safety hazards in the welding process of closed and narrow spaces are reduced. It effectively solves the problem that the cold insulation filling at the weld of the temporary door opening wall plate of the outer tank is not solid and easily causes cold penetration. In addition, through the construction method from the inside to the outside, the T-frame 9 and the mounting plate 11 can sequentially support the hot corner protection wall plate 2 and the outer tank wall plate 4 for welding; Restoration springs 14 are fixedly connected between the upper and lower sides of the fixed frame 7 and the outer wall of the sliding frame 8. A pair of L-shaped inserting plates 15 for inserting into the inner sides of the upper E-shaped bracket 5 and the lower E-shaped bracket 6 are fixedly connected to the side walls of the fixed frame 7. The setting of the L-shaped inserting plates 15 facilitates the quick installation of the fixed frame 7 on the upper E-shaped bracket 5 and the lower E-shaped bracket 6, and the quick removal of the fixed frame 7 and the T-shaped frame 9 after the door opening is sealed. The fixing structure includes a locking block 16. The inner sides of the three branches of the T-shaped frame 9 are all slidably connected with T-shaped blocks 17, and the front side of the T-shaped block 17 is set through the outer wall of the T-shaped frame 9. Three connecting plates 18 are fixedly connected to the outer wall of the round rod 10, and the connecting plates 18 are fixedly connected to the side walls of the T-shaped blocks 17. The T-shaped frame 9 is fixedly connected to the bottom frame 19 at a position below the round rod 10. The locking block 16 is slidably connected to the inner side of the bottom frame 19. The bottom end of the round rod 10 is provided with a locking groove 20 adapted to the locking block 16. An upper spring 21 is fixedly connected between the bottom end of the bottom frame 19 and the bottom of the locking block 16. A number of card slots 24 are equidistantly provided on the inner side of the fixed frame 7 relative to the position next to the T-shaped block 17. The bottom end of the locking block 16 is fixedly connected to a pull rod 22. Through the setting of the pull rod 22, after the welding of the hot corner protection wall plate 2 is completed, the pull rod 22 is pulled to drive the locking block 16 to move downward and pull it out from the locking groove 20, thereby facilitating the rapid release of the position restriction of the round rod 10. The bottom end of the pull rod 22 is set through the bottom end of the bottom frame 19. A plurality of lower springs 23 are fixedly connected between the inner side of the T-shaped frame 9 and the side wall of the connecting plate 18. A slot adapted to the side end of the T-shaped block 17 is opened on the inner side of the sliding frame 8. The setting of the slot avoids obstruction of the T-shaped block 17 from being inserted into the corresponding card slot 24, thereby locking the position of the T-shaped frame 9. During the door opening sealing process, first weld the upper E-shaped bracket 5 and the lower E-shaped bracket 6 to the outer wall of the storage tank (it should be noted that the position between the upper E-shaped brackets 5 needs to be kept horizontal to ensure the normal installation of the subsequent T-shaped frame 9, and the lower E-shaped bracket 6 must also be welded horizontally to the outer wall of the storage tank). Then, insert the fixing frame 7 onto the upper E-shaped bracket 5 and the lower E-shaped bracket 6 through the L-shaped plug-in plate 15. Then, the thermal corner protection wall plate 2 can be placed on the side wall of the mounting plate 11, and then turn on the electromagnet 12 to attract the thermal corner protection wall plate 2 (it should be noted that the thermal corner protection wall plate 2 and the outer tank wall plate 4 are both made of sticking material); At this time, if the position of the thermal angle protection wall plate 2 and the tank door opening 1 has a deviation, the T-frame 9 can be pushed to move left and right, and the sliding frame 8 on the lower E-shaped bracket 6 can be driven to slide in the fixed frame 7, and the return springs 14 on both sides can be compressed and stretched. At the same time, the left and right ends of the T-frame 9 will slide in the sliding frame 8 on the upper E-shaped bracket 5. If the thermal angle protection wall plate 2 has a deviation from the upper and lower positions of the tank door opening 1, the T-frame 9 can be pushed to move upward or downward, and the sliding frame 8 next to the upper E-shaped bracket 5 can be driven to slide up and down in the fixed frame 7 through the two sides of the T-frame 9, and the corresponding return springs 14 can be compressed and stretched at the same time, and the top of the T-frame 9 can slide up and down in the sliding frame 8 next to the lower E-shaped bracket 6, and then adjusted. After completion, ensure that the thermal angle protection wall panel 2 can be accurately inserted into the tank door opening 1, the round rod 10 can be pulled forward to drive the mounting plate 11 and the thermal angle protection wall panel 2 to move forward. At the same time, through the movement of the round rod 10, the T-shaped block 17 will be driven forward to the side through the connecting plate 18, so that the front end of the T-shaped block 17 is inserted into the corresponding slot 24. At the same time, the locking slot 20 at the bottom end of the round rod 10 will move to the top of the locking block 16, thereby releasing the squeezing of the locking block 16, and then pushing the locking block 16 into the corresponding locking slot 20 under the elastic force of the upper spring 21, thereby realizing the sliding position restriction of the round rod 10, and at the same time limiting the position of the T-shaped frame 9 on the fixed frame 7, and driving the thermal angle protection wall panel 2 to move into the tank door opening 1, and finally welding can be performed.

[0022] The return spring 26 is stretched, and the setting of the return spring 26 facilitates the rapid pulling of the round rod 10 and the front plate 25 to reset after the limit is released, thereby improving the convenience performance of the equipment.

[0023] In order to support the welding positions of the thermal corner protection wall plate 2 and the outer tank wall plate 4 at different positions in the tank door opening 1, a connecting rod 28 is provided on the rear side of the round rod 10. The connecting rod 28 and the rear side of the round rod 10 are both provided with a threaded groove. The connecting rod 28 and the front side of the mounting plate 11 are fixedly connected with a threaded block 29. The mounting plate 11 is threadedly connected to the threaded groove on the connecting rod 28 through the threaded block 29. The connecting rod 28 is threadedly connected to the threaded groove on the round rod 10 through the threaded block 29. When the welding of the hot corner protection wall plate 2 is completed, the electromagnet 12 is first turned off to release the adsorption and fixation of the hot corner protection wall plate 2, and then the threaded block 29 on the mounting plate 11 is unscrewed from the threaded groove on the connecting rod 28, and then the connecting rod 28 is unscrewed, and then the threaded block 29 on the mounting plate 11 is installed in the threaded groove on the round rod 10, and then the pull rod 22 is pulled to drive the locking block 16 to be pulled out of the locking groove 20, releasing the sliding restriction of the round rod 10, and then the round rod 10 is pulled back to its original position under the elastic force of the return spring 26 and the lower spring 23, and the bubble is closed. After the foam glass bricks 3 and glass wool 13 are pasted together, the outer tank wall panel 4 is adsorbed by the electromagnet 12 and the above operation is repeated for positioning welding. Finally, after welding is completed, the power of the electromagnet 12 is turned off, and the L-shaped plug-in plate 15 on the fixed frame 7 can be pulled out from the upper E-shaped bracket 5 and the lower E-shaped bracket 6 in turn (it should be noted that when pulling out, the card slot 24 on the fixed frame 7 will slide on the T-shaped block 17, and the T-shaped block 17 has the same pulling-out direction as the L-shaped plug-in plate 15, which will not affect the normal removal of the fixed frame 7 from the upper E-shaped bracket 5 and the lower E-shaped bracket 6).

[0024] In order to improve the stability of the equipment during operation, a pair of guide blocks 30 are fixedly connected to the outer wall of the round rod 10, and a guide groove adapted to the guide block 30 is opened on the outer wall of the T-shaped frame 9. The guide block 30 is slidably connected to the inner side of the guide groove. Through the setting of the guide block 30 and the guide groove, the rotation of the round rod 10 can be limited to prevent the round rod 10 from rotating at will, which not only affects the normal installation of the threaded block 29, but also affects the accurate insertion of the locking block 16 into the locking groove 20.

[0025] To sum up, through the design of the above structure, a support function can be provided when the thermal corner protection wall panel 2 and the outer tank wall panel 4 are welded, and the support position can be flexibly adjusted to ensure that the thermal corner protection wall panel 2 and the outer tank wall panel 4 are accurately welded to the tank door opening 1, thereby improving the convenience performance during the sealing process.

[0026] On the basis of the above embodiment, it was found during use that due to the problem of welding position accuracy of the upper E-shaped bracket 5 and the lower E-shaped bracket 6, after the fixed frame 7 and the T-shaped frame 9 were installed, the level of the mounting plate 11 would inevitably tilt, and then a large gap would appear between the adsorbed and supported thermal corner protection wall panel 2 or the outer tank wall panel 4 and the tank door opening 1. If no adjustment is made, the sealing effect of the tank door opening 1 will be affected. In order to solve the above problem, the above structure was further improved.

[0027] The outer wall of the mounting plate 11 is provided with a plurality of magnetic mounting grooves 31 at equal intervals. An iron block 32 is inserted into one of the magnetic mounting grooves 31. A top plate 33 is fixedly connected to the outer wall of the iron block 32. A screw 34 is threadedly connected to the side wall of the top plate 33. A curved plate 35 is rotatably connected to the side wall of the screw 34. Guide plates 36 are fixedly connected to the side walls of the curved plate 35 relative to both sides of the top plate 33. When the position adjustment of the T-shaped frame 9 is completed and locked, the thermal corner protection wall plate 2 will follow the mounting plate 11 into the tank door opening 1. At this time, if there is a gap between the thermal corner protection wall plate 2 and the tank door opening 1, the iron block 32 can be inserted into the magnetic mounting slot 31 next to the position to be adjusted. Under the action of magnetism, the iron block 32 is attracted, and then the electromagnet 12 on the side to be adjusted is closed. (It should be noted that the suction force of the electromagnet 12 needs to be selected to be able to stably attract the wall plate and to push the wall plate to move under the extrusion force of the electric gun driving the screw 34 to rotate) , then you can use the sleeve on the electric gun to rotate the screw 34 spirally backward, while pushing the curved plate 35 to move backward, and driving the guide plate 36 to the side of the back (it should be noted that, through the setting of the guide plate 36, it can be ensured that the curved plate 35 will not rotate with the screw 34, thereby improving the stability during the adjustment process), and then squeeze the hot corner protection wall panel 2, so that the hot corner protection wall panel 2 moves backward and is flush with the inner wall of the tank door opening 1, and then turn on the power of the electromagnet 12 on the other side to continue to adsorb the hot corner protection wall panel 2, and then the hot corner protection wall panel 2 can be welded.

[0028] To sum up, through the design of the above structure, when the thermal corner protection wall panel 2 or the outer tank wall panel 4 is supported on the tank door opening 1, the thermal corner protection wall panel 2 or the outer tank wall panel 4 can be squeezed to adjust the distance between it and the mounting plate 11, so as to adjust the horizontal position of the thermal corner protection wall panel 2 or the outer tank wall panel 4, ensure that the thermal corner protection wall panel 2 or the outer tank wall panel 4 is in the accurate welding position, ensure the sealing effect of the tank door opening 1, and at the same time increase the flexibility of the supporting equipment.

[0029] The basic principles, main features and advantages of the present invention are shown and described above.

[0030] Those skilled in the art should understand that the present invention is not limited to the above-mentioned embodiments. The above-mentioned embodiments and the specification only describe the principles of the present invention. Various changes and improvements may be made to the present invention without departing from the spirit and scope of the present invention. These changes and improvements all fall within the scope of the present invention to be protected.

Claims

1. A low-temperature ethylene full-capacity storage tank door opening welding plugging structure, comprising a storage tank door opening (1), a thermal corner protection wall plate (2), a foam glass brick (3) and an outer tank wall plate (4), characterized in that: Upper E-shaped brackets (5) are welded to the outer walls on both sides of the tank door opening (1), and lower E-shaped brackets (6) are welded to the outer wall above the tank door opening (1). Fixed frames (7) are provided beside the upper E-shaped brackets (5) and the lower E-shaped brackets (6). Sliding frames (8) are slidably connected to the inner sides of the fixed frames (7). T-shaped frames (9) are slidably connected between the sliding frames (8). The connection points of the T-shaped frames (9) are slidably connected to round rods (10). The rear end of the round rods (10) is provided with a mounting plate (11). An annular groove is provided on the side wall of the mounting plate (11). A pair of semi-circular electromagnets (12) are fixedly connected in the annular groove. A fixing structure for fixing the position of the mounting plate (11) is provided in the T-shaped frame (9). When sealing, the hot corner protection wall plate (2) is first positioned and supported by the electromagnet (12) on the mounting plate (11) and welded to the inner side of the tank door opening (1), and then the foam glass brick (3) is directly pasted on the hot corner protection wall plate (2), and then a layer of glass wool (13) is pasted on the foam glass brick (3) at the tank door opening (1), and finally the outer tank wall plate (4) is positioned and supported on the tank door opening (1) again by the mounting plate (11), and positioning welding is performed to complete the sealing.

2. The low-temperature ethylene full-capacity storage tank door opening welding sealing structure according to claim 1 is characterized in that: A return spring (14) is fixedly connected between the upper and lower sides of the interior of the fixed frame (7) and the outer wall of the sliding frame (8), and a pair of L-shaped inserting plates (15) for inserting into the inner sides of the upper E-shaped bracket (5) and the lower E-shaped bracket (6) are fixedly connected to the side walls of the fixed frame (7).

3. The low-temperature ethylene full-capacity storage tank door opening welding sealing structure according to claim 1 is characterized in that: The fixing structure comprises a locking block (16), the inner sides of the three branches of the T-shaped frame (9) are all slidably connected to the T-shaped blocks (17), and the front side of the T-shaped blocks (17) is arranged through the outer wall of the T-shaped frame (9), the outer wall of the round rod (10) is fixedly connected to three connecting plates (18), and the connecting plates (18) are all fixedly connected to the side walls of the T-shaped blocks (17), the T-shaped frame (9) is fixedly connected to the bottom frame (19) at a position below the round rod (10), the locking block (16) is slidably connected to the inner side of the bottom frame (19), the bottom end of the round rod (10) is provided with a locking groove (20) adapted to the locking block (16), an upper spring (21) is fixedly connected between the inner bottom end of the bottom frame (19) and the bottom of the locking block (16), and the inner side of the fixing frame (7) is provided with a plurality of slots (24) equidistantly spaced relative to the position next to the T-shaped block (17).

4. The low-temperature ethylene full-capacity storage tank door opening welding sealing structure according to claim 3 is characterized in that: The bottom end of the locking block (16) is fixedly connected to a pull rod (22), and the bottom end of the pull rod (22) is arranged to pass through the bottom end of the bottom frame (19). A plurality of lower springs (23) are fixedly connected between the inner side of the T-shaped frame (9) and the side wall of the connecting plate (18). The inner side of the sliding frame (8) is provided with a slot adapted to the side end of the T-shaped block (17).

5. The low-temperature ethylene full-containment storage tank door opening welding sealing structure according to claim 1, characterized in that: The front end of the round rod (10) is fixedly connected to a front plate (25), a return spring (26) is fixedly connected between the front plate (25) and the outer wall of the T-shaped frame (9), and a pull ring (27) is fixedly connected to the front side of the front plate (25).

6. The low-temperature ethylene full-containment storage tank door opening welding sealing structure according to claim 1, characterized in that: A connecting rod (28) is provided on the rear side of the round rod (10), and a threaded groove is provided on the rear sides of the connecting rod (28) and the round rod (10). A threaded block (29) is fixedly connected to the front side of the connecting rod (28) and the mounting plate (11). The mounting plate (11) is threadedly connected to the threaded groove on the connecting rod (28) through the threaded block (29), and the connecting rod (28) is threadedly connected to the threaded groove on the round rod (10) through the threaded block (29).

7. The low-temperature ethylene full-containment storage tank door opening welding sealing structure according to claim 1, characterized in that: A pair of guide blocks (30) are fixedly connected to the outer wall of the round rod (10), and a guide groove adapted to the guide block (30) is opened on the outer wall of the T-shaped frame (9), and the guide block (30) is slidably connected to the inner side of the guide groove.

8. The low-temperature ethylene full-containment storage tank door opening welding sealing structure according to claim 1, characterized in that: The outer wall of the mounting plate (11) is provided with a plurality of magnetic mounting grooves (31) at equal intervals, wherein an iron block (32) is inserted into one of the magnetic mounting grooves (31), the outer wall of the iron block (32) is fixedly connected to a top plate (33), a screw rod (34) is threadedly connected to the side wall of the top plate (33), the side wall of the screw rod (34) is rotatably connected to an arc plate (35), and the side wall of the arc plate (35) is fixedly connected to guide plates (36) at both sides of the side wall relative to the top plate (33).

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