Steel beam welding heat preservation device in ultralow-temperature environment

Abstract

The utility model relates to the technical field of steel structure welding, in particular to a steel beam welding heat preservation device in an ultralow-temperature environment, which comprises a top plate, two side plates, a door plate and a bottom plate, the top plate is horizontally arranged, the side plates are fixedly connected to the lower plate surface of the top plate, and the two side plates are located on the two opposite sides of the lower plate surface of the top plate; the four door plates are arranged on the two opposite sides between the side plates in pairs, the door plates are hinged to the side plates through first hinges, the two opposite sides between the two side plates can be closed through the door plates, the two bottom plates are hinged to the opposite plate faces of the two side plates through second hinges, and the two bottom plates are hinged to the two side plates through second hinges. And the bottom plate can seal the side, deviating from the top plate, between the side plates, and the effect of safely and stably welding the steel beam at the low temperature is achieved.

Description

Technical Field

[0001] This application relates to the field of steel structure welding technology, and in particular to a heat preservation device for welding steel beams in an ultra-low temperature environment. Background Technology

[0002] Currently, steel structure welding is a very important connection technology in modern construction engineering. It is widely used in many fields such as buildings, bridges, ships, offshore platforms, and pressure vessels. It is flexible in design, easy to operate, and suitable for different construction environments and conditions. Its application range is extremely wide, making it one of the preferred methods for connecting metal components.

[0003] In most existing engineering projects, welding processes can be completed at room temperature without the need for additional protective items and measures.

[0004] The existing technical solutions mentioned above have the following drawbacks: When carrying out winter construction in high-latitude regions, the weld joints are affected by temperature and wind. If windproof and heat-insulating measures are not taken, the steel components will be preheated and then cooled too quickly after welding, which will easily cause cold cracks and surface defects at the weld joints, making it difficult to guarantee the welding quality of the steel structure. Utility Model Content

[0005] This application provides a thermal insulation device for welding steel beams in ultra-low temperature environments to ensure safe and stable welding of steel beams at low temperatures.

[0006] The above-mentioned technical objective of this application is achieved through the following technical solution:

[0007] A thermal insulation device for steel beam welding in ultra-low temperature environments includes a top plate, side plates, door panels, and a bottom plate. The top plate is horizontally arranged. The side plates are fixed to the lower surface of the top plate. Two side plates are provided and located on opposite sides of the lower surface of the top plate. Four door panels are provided, arranged in pairs on opposite sides of the side plates. The door panels are hinged to the side plates via first hinges, and the door panels can close the opposite sides of two side plates. Two bottom plates are provided, and the two bottom plates are hinged to the opposite surfaces of two side plates via second hinges, and the bottom plates can close the side of the side plates away from the top plate.

[0008] By adopting the above technical solution, a closable insulated space can be formed by setting up a top plate, side plates, door plates, and a bottom plate. The door plates hinged on both sides of the side plates and the bottom plate can effectively cover and enclose the steel beam to be welded. This provides relatively stable temperature conditions for welding operations in ultra-low temperature environments, reduces the direct impact of wind and low temperature on the weld, and reduces the risk of welding defects such as cold cracks caused by excessively rapid cooling of the weld after welding. This improves the welding quality of the steel beam and ensures the safety and reliability of the welded structure.

[0009] Optionally, the top plate is provided with a hinge seat, which consists of two metal plates with opposite surfaces. A hinge column is rotatably arranged between the metal plates. A connecting rod is fixed to the periphery of the hinge column. The end of the connecting rod is sleeved on the periphery of the hinge column. A U-shaped buckle is fixed to the end of the connecting rod away from the hinge seat. The buckle is adapted to the door panel, and the end face of the door panel can be inserted into the U-shaped notch of the buckle.

[0010] By adopting the above technical solution, and by setting a hinge seat, a hinge column, a connecting rod, and a buckle, the door panel can be flexibly fixed. The hinge seat is connected to the connecting rod through the hinge column, and the buckle at the end of the connecting rod is adapted to the end of the door panel, so that the door panel can be firmly fixed by the buckle when it is opened, reducing the possibility that the door panel will get stuck when the insulation device is installed on the steel beam.

[0011] Optionally, a lifting ring is provided on the surface of the top plate. The lifting ring is a semi-circular cylinder, and the end of the lifting ring is fixedly connected to the surface of the top plate.

[0012] By adopting the above technical solution, the insulation device can be easily hoisted and moved. The lifting ring is a semi-circular cylindrical structure with its end fixed to the top plate, which facilitates its rapid transportation to the designated welding position and improves the flexibility of the device and construction efficiency.

[0013] Optionally, the side panel has an observation window connecting the two panels, and the observation window is filled with multi-layered glass or Low-E glass filled with inert gas.

[0014] By adopting the above technical solution and setting up an observation window, good light transmission and heat preservation performance can be provided. The design of the observation window allows the staff outside the device to observe the welding operation inside. The use of multi-layer glass or Low-E glass filled with inert gas can effectively reduce heat loss and maintain the temperature inside the device.

[0015] Optionally, the side wall of the door panel away from the side panel has a strip-shaped notch.

[0016] By adopting the above technical solution, and by setting a strip-shaped notch on the door panel, the steel beam can be accommodated, making it convenient to weld the steel beam.

[0017] Optionally, two door panels on one side of the side panel are provided with latches, which can fix the two door panels in place.

[0018] By adopting the above technical solution and setting a pin, the two door panels can be firmly fixed. The pin is installed on the surface of the door panel. By inserting the pin into the corresponding hole or slot, the two door panels can be tightly connected together, preventing the door panels from separating due to external force during the welding process, thereby ensuring the sealing and stability of the device and providing a good environment for welding operations.

[0019] Optionally, a first hook is provided on both sides of the observation window of the opposite side plate. The first hook is a semi-circular cylinder and its end is fixed to the side plate surface. A second hook is provided at the corresponding position on the bottom plate surface. The second hook is a semi-circular cylinder and its end is fixed to the side plate surface.

[0020] By adopting the above technical solution, and by setting the first hook and the second hook, the bottom plate and the side plate can be quickly connected and fixed. The first hook is set on the side plate and the second hook is set on the bottom plate. The two hooks work together to firmly fix the bottom plate to the side plate. When the bottom plate is rotated to a horizontal position, it is convenient to put the insulation device on the steel beam.

[0021] Optionally, a limiting plate is provided on the opposite side plate. The limiting plate is located on the side of the bottom plate away from the top plate. The surface of the limiting plate is perpendicular to both the surface of the bottom plate and the surface of the side plate. One side wall of the limiting plate is fixedly connected to the surface of the side plate, and the adjacent side wall can fit against the surface of the bottom plate.

[0022] By adopting the above technical solution and setting a limiting plate, the rotation trajectory of the base plate can be restricted. The limiting plate is installed on the side plate and located below the base plate. When the base plate rotates, the limiting plate can prevent the base plate from rotating excessively or deviating from the predetermined position, ensuring that the base plate can accurately cooperate with the side plate, thereby improving the overall structural stability and reliability of the device.

[0023] In summary, this application has the following technical effects:

[0024] 1. By setting up a top plate, side plates, door plates, and bottom plate, the door plates hinged on both sides of the side plates and the bottom plate can form an openable and closable heat-insulating space, effectively covering and sealing the steel beam to be welded. This provides relatively stable temperature conditions for welding operations in ultra-low temperature environments, reduces the direct impact of wind and low temperature on the weld, reduces the risk of welding defects such as cold cracks caused by excessively rapid cooling of the weld position after welding, thereby improving the welding quality of the steel beam and ensuring the safety and reliability of the welded structure.

[0025] 2. By setting up a hinge seat, hinge column, connecting rod and buckle, the door panel can be flexibly fixed. The hinge seat is connected to the connecting rod through the hinge column. The buckle at the end of the connecting rod is adapted to the end of the door panel, so that the door panel can be firmly fixed by the buckle when it is opened, reducing the possibility that the door panel will get stuck when the insulation device is installed on the steel beam.

[0026] 3. By setting a limiting plate, the rotation trajectory of the base plate can be restricted. The limiting plate is installed on the side plate and located below the base plate. When the base plate rotates, the limiting plate can prevent the base plate from rotating excessively or deviating from the predetermined position, ensuring that the base plate can accurately cooperate with the side plate, thereby improving the overall structural stability and reliability of the device. Attached Figure Description

[0027] Figure 1 This is a structural diagram of the object of this application;

[0028] Figure 2 This is a structural diagram of the top plate of this application;

[0029] Figure 3 This is a structural diagram of the side plate of this application;

[0030] Figure 4 This is a structural diagram of the door panel of this application;

[0031] Figure 5 This is a structural diagram of the base plate of this application.

[0032] Explanation of reference numerals in the attached drawings: 1. Top plate; 11. Lifting ring; 12. Hinge seat; 121. Hinge column; 13. Connecting rod; 14. Buckle; 2. Side plate; 21. Observation window; 22. Limiting plate; 23. First hook; 24. First hinge; 3. Door panel; 31. Bolt; 32. Notch; 4. Bottom plate; 41. Second hinge; 42. Second hook; 43. Connector. Detailed Implementation

[0033] The present application will be further described in detail below with reference to the accompanying drawings.

[0034] This application discloses a heat preservation device for welding steel beams in ultra-low temperature environments, referring to... Figure 1 The insulation device consists of a top plate 1, side plates 2, door plates 3, and a bottom plate 4. The insulation device has an openable bottom surface and two opposite sides, which allows the insulation device to cover the steel beam to be welded, reducing the impact of wind and temperature on steel beam welding in ultra-low temperature environments. After the steel beam is preheated and welded, the weld seam cools down too quickly, which can easily cause welding defects such as cold cracks. This improves the welding quality of the steel beam and ensures the safety and reliability of the welded structure.

[0035] Combination Figure 1 and Figure 2The top plate 1 is a square metal plate, horizontally positioned. A semi-circular lifting ring 11 is provided on the upper surface of the top plate 1, with both ends of the ring 11 fixed to the upper surface of the top plate 1. Four lifting rings 11 are provided, arranged in a rectangular pattern on the upper surface of the top plate 1. A hinge seat 12 is provided on the upper surface of the top plate 1, consisting of two opposing semi-circular metal plates. A hinge post 121, a cylinder, is rotatably positioned between the two metal plates, with both ends of the hinge post 121 rotatably embedded in the two metal plates. The axis of the hinge post 121 is perpendicular to the surface of the metal plates.

[0036] Combination Figure 1 and Figure 2 Four hinge seats 12 are provided, located at the four corners of the upper surface of the top plate 1. A connecting rod 13 is also provided between the two metal plates of the hinge seat 12. The connecting rod 13 is a square rod, with one end sleeved on the periphery of the hinge post 121. The connecting rod 13 is fixedly connected to the hinge post 121 and can rotate through the hinge post 121. The rotation directions of the four connecting rods 13 are respectively located on the vertical plane where the diagonal of the upper surface of the top plate 1 lies. A buckle 14 is fixedly connected to the end of the connecting rod 13 away from the hinge seat 12. The buckle 14 is an integrally formed U-shaped part, with its end fixedly connected to the end of the connecting rod 13. The length direction of the buckle 14 is parallel to the length direction of the connecting rod 13. The buckle 14 can be located outside the surface of the top plate 1, and the U-shaped opening of the buckle 14 faces downwards.

[0037] Combination Figure 1 and Figure 3 Side plates 2 are installed on the lower surface of the top plate 1. Two side plates 2 are provided, one on each side of the lower surface of the top plate 1. The surface of the side plate 2 is perpendicular to the surface of the top plate 1, and the sidewall of the side plate 2 is fixedly connected to the lower surface of the top plate 1. The two side plates 2 are positioned opposite each other. An observation window 21 is provided on the surface of the side plate 2, connecting the two surfaces of the side plate 2. The observation window 21 is filled with multi-layered glass or Low-E glass filled with inert gas, which has the functions of light transmission, heat insulation, and preventing rapid heat loss. The joint between the observation window 21 and the glass is sealed tightly with flexible sealing material to ensure good airtightness of the device.

[0038] Combination Figure 1 and Figure 3 Each of the two side plates 2 has a first hook 23 on its opposite surface. The first hook 23 is a round rod bent into a semi-circular ring shape. The end of the first hook 23 is fixed to the surface of the side plate 2. Two first hooks 23 are provided on the surface of one side plate 2. The two first hooks 23 are located on both sides of the observation window 21.

[0039] Combination Figure 1 and Figure 4The door panel 3 is hinged to the side panel 2 via the first hinge 24. Four door panels 3 are arranged between the two side panels 2. The door panels 3 are metal strips. The side walls of the door panels 3 are hinged to the side walls of the side panels 2 via the first hinge 24. The four door panels 3 are arranged in pairs on both sides of the side panels 2. The two door panels 3 on one side can close the openings on opposite sides of the two side panels 2. The side walls of the two adjacent door panels 3 are provided with strip-shaped notches 32. The two door panels 3 are connected by pins 31. Two pins 31 are provided on the surface of the two door panels 3 on one side, and the two pins 31 are located on the upper and lower sides of the notches 32 respectively. The door panel 3 is adapted to the U-shaped opening of the buckle 14. The door panel 3 rotates via the first hinge 24. When the length direction of the end face of the door panel 3 is rotated to coincide with the length direction of the adjacent connecting rod 13, the connecting rod 13 is rotated, which drives the buckle 14, so that the end of the door panel 3 is inserted into the buckle 14, thus fixing the door panel 3.

[0040] Combination Figure 1 and Figure 5 The base plate 4 is positioned between two side plates 2 and away from the top plate 1. The base plate 4 is a metal strip and consists of two pieces. The base plate 4 is horizontal in its length direction. The opposing sidewalls of the two base plates 4 are hinged to the opposite surfaces of the two side plates 2 via second hinges 41. The second hinges 41 are spaced apart from the edges of the side plates 2 away from the top plate 1. When the base plate 4 is rotated to a horizontal position, the adjacent sidewalls of the two base plates 4 can fit together, and the two base plates 4 can close the bottom opening between the two side plates 2. A second hook 42 is provided on the surface of the base plate 4 facing the top plate 1. The second hook 42 is semi-circular in shape, and both ends of the second hook 42 are fixed to the surface of the base plate 4. The fixed position of the second hook 42 to the base plate 4 corresponds to the position of the first hook 23. When the base plate 4 approaches the side plate 2 to which it is fixed, it can connect with the first hook 23 fixed to that side plate 2, thereby temporarily fixing the base plate 4.

[0041] Combination Figure 3 and Figure 5 Below the two side plates 2 facing each other, there is a limiting plate 22 with a right-angled triangular surface. One right-angled sidewall of the limiting plate 22 is fixed to the surface of the side plate 2, and the other right-angled sidewall can fit against the surface of the base plate 4 to restrict the rotation trajectory of the base plate 4. When the surface of the base plate 4 is horizontal, a connector 43 with an L-shaped end face is fixed to the surface of the base plate 4 facing the top plate 1. The connector 43 is fixed to the edge of the base plate 4 away from the side plate 2, and the length direction of the connector 43 is perpendicular to the length direction of the base plate 4.

[0042] Reference Figure 5One outer surface of the connector 43 is fixed to the surface of the base plate 4, and the other outer surface is flush with the side wall of the base plate 4 away from the side plate 2. The outer surfaces of the connectors 43 on the two base plates 4 can fit together. When the outer surfaces of the two connectors 43 fit together, the two connectors 43 are connected by bolts and nuts screwed on the ends of the bolts.

[0043] Reference Figure 1 When using the insulation device, rotate both side door panels 3 and both bottom plates 4 to the open position. Door panels 3 are secured with buckles 14, and bottom plates 4 are secured with the first hook 23 and the second hook 42. Use vertical transport equipment to hoist the device to a designated location and temporarily secure it. Place the insulation device onto the steel beam to be welded. On-site personnel enter the device, unlock the bottom plates 4, rotate them to a horizontal position to close the lower opening, and secure them with connectors 43 and the bolts and nuts on them. This completes the installation of the bottom plates 4. Next, personnel close the front and rear door panels 3 and secure them with pins 31. Insulation material is then filled into the gaps between the steel beam and the side walls of the notch 32. After completing these steps, personnel check the sealing performance of the device inside. Finally, the preheating and welding of the steel beam are completed. The openable design of the sides and bottom facilitates the reuse of the device and improves the welding efficiency of the steel beam.

[0044] This specific embodiment is merely an explanation of this application and is not intended to limit it. After reading this specification, those skilled in the art can make modifications to this embodiment without contributing any inventive step, but such modifications are protected by patent law as long as they fall within the scope of the claims of this application.

Claims

1. A heat preservation device for welding steel beams in a cryogenic environment, characterized in that: The system includes a top plate (1), side plates (2), door plates (3), and a bottom plate (4). The top plate (1) is horizontally arranged. The side plates (2) are fixed to the lower surface of the top plate (1). There are two side plates (2), which are located on opposite sides of the lower surface of the top plate (1). There are four door plates (3), which are arranged in pairs on opposite sides of the side plates (2). The door plates (3) are hinged to the side plates (2) by a first hinge (24). The door plates (3) can close the opposite sides of the two side plates (2). There are two bottom plates (4), which are hinged to the opposite surfaces of the two side plates (2) by a second hinge (41). The bottom plates (4) can close the side of the side plates (2) that is away from the top plate (1).

2. The device for welding and heat preservation of steel beam in ultra-low temperature environment according to claim 1, characterized in that: The top plate (1) is provided with a hinge seat (12). The hinge seat (12) is composed of two metal plates with opposite surfaces. A hinge column (121) is rotatably arranged between the metal plates. A connecting rod (13) is fixed to the periphery of the hinge column (121). The end of the connecting rod (13) is sleeved on the periphery of the hinge column (121). A U-shaped buckle (14) is fixed to the end of the connecting rod (13) away from the hinge seat (12). The buckle (14) is adapted to the door panel (3), and the end face of the door panel (3) can be inserted into the U-shaped notch (32) of the buckle (14).

3. The device for welding and heat preservation of steel beam in ultra-low temperature environment according to claim 2, characterized in that: A lifting ring is provided on the upper surface of the top plate (1). The lifting ring is a semi-circular cylinder, and the end of the lifting ring is fixedly connected to the upper surface of the top plate (1).

4. The device for welding and heat preservation of steel beam in ultra-low temperature environment according to claim 1, characterized in that: The side panel (2) has an observation window (21) connecting the two panels. The observation window (21) is filled with multi-layered glass or Low-E glass filled with inert gas.

5. The device for welding and heat preservation of steel beam in ultra-low temperature environment according to claim 1, characterized in that: The door panel (3) has a strip-shaped notch (32) on its side wall away from the side panel (2).

6. The insulation device for steel beam welding under ultra-low temperature environment according to claim 5, characterized in that: The two door panels (3) on one side of the side panel (2) are provided with pins (31), which can fix the two door panels (3).

7. The device for welding and heat preservation of steel beam in ultra-low temperature environment according to claim 1, characterized in that: On both sides of the observation window (21) opposite to the side plate (2), there are first hooks (23). The first hook (23) is a semi-circular cylinder. The end of the first hook (23) is fixed to the side plate (2). The bottom plate (4) is provided with a second hook (42) at the corresponding position. The second hook (42) is a semi-circular cylinder. The end of the second hook (42) is fixed to the side plate (2).

8. The device for welding and heat preservation of steel beam in ultra-low temperature environment according to claim 7, characterized in that: A limiting plate (22) is provided on the opposite plate surface of the side plate (2). The limiting plate (22) is located on the side of the bottom plate (4) away from the top plate (1). The plate surface of the limiting plate (22) is perpendicular to the plate surface of the bottom plate (4) and the plate surface of the side plate (2). One side wall of the limiting plate (22) is fixedly connected to the plate surface of the side plate (2), and the side wall adjacent to it can fit against the plate surface of the bottom plate (4).

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