Adjusting device for mounting gap of Monel plate of jacket

Abstract

The invention provides a jacket Monel plate installation gap adjusting device, and relates to the technical field of offshore oil engineering jacket installation. The handle is connected with the bandage connecting piece through a rotating mechanism; the pressing structure is arranged at the bottom of the bandage connecting piece and used for flattening the monel plates on the two sides of the gap. The operation handle is used for controlling the pressing plate to press the monel plates on the two sides of the welding seam, then the butt joint gap between the monel plates on the two sides of the welding seam is adjusted, assembly welding is facilitated through the structure, the operation principle of the device is similar to that of a lever, and lifting can be facilitated by arranging the rotating mechanism and the handle; by means of the monel plate gap adjusting device, the monel plates can be rapidly adjusted and flattened, the monel plates can be fixed through binding bands, and base material damage caused by temporary spot welding in a welding type tool is avoided.

Description

Technical Field

[0001] This invention relates to the field of offshore oil engineering jacket installation technology, and in particular to a gap adjustment device for installing Monel plates on jackets. Background Technology

[0002] The modular jacket is a key load-bearing component of offshore oil and gas exploration platforms. Using Monel plates for corrosion protection at the tidal zone is a crucial anti-corrosion measure for jackets in the Middle East. Monel plate is a high-strength, corrosion-resistant alloy plate. Installation requires wrapping the jacket around a single sheet before welding. The installation dimensions are 30mm to 50mm larger than the circumference of the wrapped steel leg. Installation proceeds from bottom to top, using an overlapping method. Since the jacket legs are rolled and welded, some elliptical deformation may occur. During installation, the butt welds of the jacket legs will be encountered, creating gaps around the welds. The Monel plate thickness is typically 1.5mm. Welding thin plates requires very high precision in weld gap control; excessively large gaps can easily lead to weld penetration, increasing welding difficulty and requiring repeated welding. This also increases construction costs. Scratches and impacts are unacceptable during Monel plate installation. A common method used by structural engineers to adjust gaps is to weld a temporary fixture. Welding-type tooling for adjusting gaps can easily damage the base material.

[0003] Therefore, it is necessary to design a gap adjustment device for the installation of Monel plates for guide tube supports to solve the problems mentioned above. Summary of the Invention

[0004] The main technical problem to be solved by this invention is that the gap between the Monel plates on both sides of the weld is not easy to adjust and the commonly used gap adjustment method is to weld a temporary tool to adjust the gap. The method of adjusting the gap with a welding tool requires temporary spot welding, which is prone to damaging the base material. In order to overcome the above-mentioned defects of the prior art, a gap adjustment device for Monel plate installation of guide frame is provided.

[0005] The technical solution adopted by this invention to solve its technical problem is: A gap adjustment device for installing Monel plates on a guide frame includes a strap connector for mounting straps; a handle connected to the strap connector via a rotating mechanism; and a pressing structure disposed at the bottom of the strap connector for flattening the Monel plates on both sides of the gap.

[0006] Furthermore, the strap connector has a strap opening.

[0007] Furthermore, the handle has an upwardly curved structure.

[0008] Furthermore, the pressing structure includes a cylinder welded to the bottom of the handle and a pressure plate welded to the bottom of the cylinder.

[0009] Furthermore, the bottom of the pressure plate has a flat base plate that facilitates the flattening operation.

[0010] Furthermore, the rotating mechanism includes a pin lug fixedly disposed on the side of the strap connector and a pin shaft fixedly disposed at the end of the handle and rotatably connected to the pin lug.

[0011] Furthermore, the lug is a nut welded to the side of the strap connector, the pin is welded to the end of the handle, and the pin is rotatably disposed inside the nut.

[0012] A method for using a Monel plate installation gap adjustment device for a guide tube frame includes the following steps: Step 1: Initially install the Monel board, determine the position of the gap to be adjusted, and determine the optimal installation position of the device of the present invention; Step 2: Place the device in the optimal position, roughly adjust the position of the strap connectors to facilitate the installation of the entire device, and roughly adjust the position of the pressure plate so that its center is aligned with the gap of the Monel board splicing. Step 3: Install the straps, pass them through the strap openings in the strap connectors, and securely fix the device of the present invention to the guide leg of the guide frame; Step 4: Precisely install the Monel board, and adjust the installation position and angle of the Monel board; Step 5: Press down the pressure plate of the device of the present invention, align it with the gap of the Monel board, press down the handle, so that the pressure plate presses the Monel boards on both sides of the gap tightly, so that the Monel boards on both sides of the gap are flat and aligned. Step 6: Spot weld the Monel plate. After flattening and aligning the Monel plate using the device of this invention, spot weld the gaps. Step 7: Loosen the straps, reposition the device of the present invention to the position that needs adjustment, align the pressure plate with the gap to be adjusted, tighten the straps again, repeat the above steps, and then perform spot welding.

[0013] The beneficial effects of this invention are: 1. This invention controls the pressure plate to press the Monel plates on both sides of the weld by manipulating the handle, thereby adjusting the butt gap between the Monel plates on both sides of the weld. This structure facilitates assembly welding. The operating principle of this device is similar to that of a lever, making it lightweight and easy to operate.

[0014] 2. By setting up a rotating mechanism, the device can be fixed with straps, and the handle can be easily lifted to control the pressure plate to flexibly adjust the gap between the Monel plates. The gap can also be adjusted multiple times until the optimal gap is achieved.

[0015] 3. The device of the present invention can quickly adjust and flatten the Monel plate, and fix it with straps to avoid damage to the base material caused by temporary spot welding in welding fixtures. The device of the present invention has a simple structure, is easy to manufacture, and is simple and convenient to operate. Attached Figure Description

[0016] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0017] Figure 1 This is a schematic diagram of the overall structure of the present invention; Figure 2 This is a schematic diagram illustrating the usage state of the present invention.

[0018] Explanation of the labels in the diagram: 1.1 Strap connector; 1.2 Pin lug; 1.3 Pin shaft; 1.4 Pressure plate; 1.5 Handle; 2.2 Strap; 2.3 Monel plate; 2.4 Guide leg. Detailed Implementation

[0019] The present invention will be further described below with reference to specific embodiments. The illustrative embodiments and descriptions herein are used to explain the present invention, but are not intended to limit the present invention.

[0020] Reference Figure 1 and Figure 2 As shown, a Monel plate installation gap adjustment device for a guide rail includes a strap connector 1.1 for mounting straps 2.2. The strap connector 1.1 has a strap opening, through which the strap 2.2 passes and wraps around the guide leg 2.4 of the guide rail, thus firmly fixing the device to the guide leg 2.4 of the guide rail. This avoids the need for welding, thereby preventing damage to the base material from temporary welding. The fixing method is simple, effective and convenient. Furthermore, it also includes a handle 1.5 connected to the strap connector 1.1 via a rotating mechanism. The handle 1.5 is an upwardly curved structure with an included angle of about 130°. The angle of the handle 1.5 can also be adjusted according to the actual situation on site. The angle of the handle 1.5 is used to press down the entire device to obtain clamping force. The handle 1.5 should be easy to operate.

[0021] It also includes a pressing structure located at the bottom of the strap connector 1.1. The pressing structure includes a cylinder welded to the bottom of the handle 1.5 and a pressure plate 1.4 welded to the bottom of the cylinder. The bottom of the pressure plate 1.4 has a flat base plate to facilitate flattening operations. The pressure plate 1.4 is used to flatten the Monel plates 2.3 on both sides of the weld. By manipulating the handle 1.5, the pressure plate 1.4 is controlled to press the Monel plates 2.3 on both sides of the weld, thereby adjusting the butt joint gap between the Monel plates 2.3 on both sides of the weld. This structure facilitates assembly welding. The operating principle of this device is similar to a lever, making it lightweight and easy to operate.

[0022] Specifically, the rotating mechanism includes a lug 1.2 fixedly disposed on the side of the strap connector 1.1 and a pin 1.3 fixedly disposed at the end of the handle 1.5 and rotatably connected to the lug 1.2. Preferably, the lug 1.2 is a nut welded to the side of the strap connector 1.1, and the pin 1.3 is welded to the end of the handle 1.5, and the pin 1.3 is rotatably disposed within the nut.

[0023] In use, the binding connector 1.1 at the front end of the device is used to fix the device to the guide leg 2.4 of the guide frame via the binding strap 2.2. Then, the handle 1.5 is operated to make the pressure plate 1.4 flatten the Monel plates 2.3 on both sides of the weld, adjust the gap, and then spot weld to complete the Monel plate assembly.

[0024] The present invention controls the pressure plate 1.4 to press the Monel plates 2.3 on both sides of the weld by manipulating the handle 1.5, thereby adjusting the butt gap between the Monel plates 2.3 on both sides of the weld. This structure facilitates assembly welding. The operating principle of this device is similar to that of a lever, making it lightweight and easy to operate.

[0025] By setting up a rotating mechanism, the device can be fixed by the strap 2.2, and the handle 1.5 can be easily lifted to control the pressure plate 1.4 to flexibly adjust the gap between the Monel plates 2.3. The gap can also be adjusted multiple times until the optimal gap is achieved. The device of this invention can be used to quickly adjust and flatten the Monel plate 2.3, and use the straps 2.2 to fix it, avoiding damage to the base material caused by temporary spot welding in welding fixtures. The device of this invention has a simple structure, is easy to manufacture, and is simple and convenient to operate.

[0026] The method of using this invention is as follows: Step 1: Initially install Monel plate 2.3, determine the position of the gap to be adjusted, and determine the optimal installation position of the device of the present invention; Step 2: Place the device in the optimal position, roughly adjust the position of the strap connector 1.1 to facilitate the installation of the entire device, and roughly adjust the position of the pressure plate 1.4 so that its center is aligned with the splicing gap of the Monel board 2.3. Step 3: Install the strap 2.2, pass it through the strap opening in the strap connector 1.1, and firmly fix the device of the present invention to the guide leg 2.4 of the guide frame; Step 4: Precisely install Monel board 2.3, and adjust the installation position and angle of Monel board 2.3; Step 5: Press down the pressure plate 1.4 of the device of the present invention, align it with the gap of the Monel plate 2.3, press down the handle 1.5, so that the pressure plate 1.4 presses the Monel plates 2.3 on both sides of the gap tightly, so that the Monel plates 2.3 on both sides of the gap are flat and aligned. Step 6: Spot weld Monel plate 2.3. After flattening and aligning Monel plate 2.3 using the device of the present invention, spot weld the gap. Step 7: Loosen the strap 2.2, reposition the device of the present invention to the position that needs adjustment, align the pressure plate 1.4 with the gap to be adjusted, tighten the strap 2.2 again, repeat the above steps and then perform spot welding.

[0027] The above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention in any way. Any simple modifications, equivalent changes, and alterations made to the above embodiments based on the technical essence of the present invention shall still fall within the scope of the technical solution of the present invention.

Claims

1. A gap adjustment device for installing Monel plates on a guide frame, characterized in that, It includes a strap connector for mounting straps; a handle connected to the strap connector via a rotating mechanism; and a pressing structure located at the bottom of the strap connector for flattening the Monel plates on both sides of the gap.

2. The Monel plate installation gap adjustment device for a guide frame according to claim 1, characterized in that, The strap connector has a strap opening.

3. The Monel plate installation gap adjustment device for a guide frame according to claim 1, characterized in that, The handle is an upward-curved structure.

4. The Monel plate installation gap adjustment device for a guide frame according to claim 1, characterized in that, The pressing structure includes a cylinder welded to the bottom of the handle and a pressure plate welded to the bottom of the cylinder.

5. The Monel plate installation gap adjustment device for a guide frame according to claim 4, characterized in that, The bottom of the pressure plate has a flat base plate that facilitates the flattening operation.

6. The Monel plate installation gap adjustment device for a guide frame according to claim 1, characterized in that, The rotating mechanism includes a pin lug fixedly disposed on the side of the strap connector and a pin shaft fixedly disposed at the end of the handle and rotatably connected to the pin lug.

7. The Monel plate installation gap adjustment device for a guide frame according to claim 6, characterized in that, The lug is a nut welded to the side of the strap connector, the pin is welded to the end of the handle, and the pin is rotatably disposed inside the nut.

8. A method of using the Monel plate installation gap adjustment device for a guide frame as described in claim 7, characterized in that, Includes the following steps: Step 1: Initially install the Monel board, determine the position of the gap to be adjusted, and determine the optimal installation position of the device of the present invention; Step 2: Place the device in the optimal position, roughly adjust the position of the strap connectors to facilitate the installation of the entire device, and roughly adjust the position of the pressure plate so that its center is aligned with the gap of the Monel board splicing. Step 3: Install the straps, pass them through the strap openings in the strap connectors, and securely fix the device of the present invention to the guide leg of the guide frame; Step 4: Precisely install the Monel board, and adjust the installation position and angle of the Monel board; Step 5: Press down the pressure plate of the device of the present invention, align it with the gap of the Monel board, press down the handle, so that the pressure plate presses the Monel boards on both sides of the gap tightly, so that the Monel boards on both sides of the gap are flat and aligned. Step 6: Spot weld the Monel plate. After flattening and aligning the Monel plate using the device of this invention, spot weld the gaps. Step 7: Loosen the straps, reposition the device of the present invention to the position that needs adjustment, align the pressure plate with the gap to be adjusted, tighten the straps again, repeat the above steps, and then perform spot welding.

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