An elongated container inversion tool and method

Abstract

The present application belongs to the field of overturning tools, and particularly relates to an elongated container overturning tool and method. The tool comprises a hoisting balance beam arranged above a component to be overturned, a overturning embracing ring arranged on the component to be overturned, a hoisting cable connecting the hoisting balance beam and the overturning embracing ring, and an overturning bracket arranged at the bottom end of the component to be overturned. The tool has the following advantages: (1) the tool is made of common materials, and has low manufacturing cost and simple structure; (2) the tool is easy to install and remove, and thus reduces labor intensity and construction risk; (3) the tool is suitable for various installation environments, and has no interface with the outside world, thus avoiding interface risk and greatly reducing the requirement for construction site conditions; and (4) the tool and method are suitable for a wide range of applications, and are not only suitable for installation and overturning of nuclear power stabilizers, but also suitable for installation and overturning of various elongated containers.

Description

Technical Field

[0001] This invention pertains to flipping tools, specifically relating to a tool and method for flipping a long and slender container. Background Technology

[0002] Nuclear power plant construction involves numerous elongated containers, which are transported horizontally to the site and then tilted and hoisted into an upright position. The reactor coolant system pressurizer is a heavy, elongated container and one of the important pieces of equipment in a nuclear power plant. This patent uses the pressurizer as an example for related descriptions.

[0003] For the CPR1000 reactor type, the pressurizer installation process begins with hoisting it onto a heavy-duty transport trolley on the +20m platform. The pressurizer is then pulled to the hoisting hall of the nuclear island plant using a traction device. A clamping ring and tensioning device are installed on the upper part of the pressurizer, along with special hoisting tools. A tilting trolley is assembled and hoisted onto the +20m platform using a gantry crane. The pressurizer is then pulled to the bottom of the pressurizer skirt and tilted to a vertical position using a ring hoist before being hoisted to the installation location in the pressurizer room.

[0004] There are currently two methods for installing the pressurizer in the "Hualong One" reactor type: external flip-in and internal flip-in.

[0005] 1) External flipping of the nuclear island: Assemble and adjust the mobile flipping support of the voltage regulator in the external flipping area of ​​the nuclear island, transport the voltage regulator horizontally to the vicinity of the flipping area, hoist the voltage regulator onto the transport saddle, install the flipping clamp and tensioning device on the upper part of the voltage regulator, install the flipping support legs at the bottom of the voltage regulator skirt, install special hoisting tools on the upper cylinder of the voltage regulator and hook them with a large crane, and slowly flip the voltage regulator to a vertical position with the cooperation of the large crane and the mobile flipping support. Remove the protective cover plate and flipping support legs at the bottom of the skirt, and use a large crane to hoist the voltage regulator to the installation position in the voltage regulator room.

[0006] 2) In-nuclear island flipping: Transport the voltage regulator horizontally to the designated position under the gantry crane, lift the voltage regulator onto the heavy-duty transport trolley on the +17.5m platform using a gantry crane, pull the voltage regulator to the designated position and install the upper and lower flipping clamps, pull the voltage regulator to the designated position in the hoisting hall, install the special hoisting tools and flipping brackets, flip the voltage regulator horizontally to the vertical position, remove the lower flipping clamps, and hoist the voltage regulator to the installation position in the voltage regulator room.

[0007] Although the special tools and processes for flipping nuclear power plant regulators are mature, the large number of special tools, high engineering costs, complex installation and dismantling processes, large workload, and long installation and dismantling period, coupled with the need to coordinate with civil engineering structures or numerous special tools and the large number of interfaces, increase the installation risks related to interface coordination. Summary of the Invention

[0008] This invention addresses the shortcomings of existing technologies by providing a tool and method for flipping slender containers.

[0009] The present invention is implemented as follows: a slender container flipping tool, comprising a lifting balance beam disposed above the part to be flipped, a flipping ring disposed on the part to be flipped, the lifting balance beam being connected to the flipping ring via slings, and a flipping bracket disposed at the bottom end of the part to be flipped.

[0010] As described above, a slender container flipping tool is provided with several transport saddles on the part being flipped.

[0011] As described above, a slender container tipping tool has two transport saddles, which are respectively located on both sides of the tipping ring.

[0012] As described above, a slender container flipping tool includes an upper and lower flipping bracket. The upper flipping bracket is circular, with dimensions matching the bottom dimensions of the component being flipped, while the lower flipping bracket is L-shaped.

[0013] As described above, in a slender container flipping tool, the surfaces of the flipping bracket that contact the ground during the flipping process are all arc-shaped.

[0014] As described above, a slender container tilting tool has two lifting lugs on the upper part of the lifting balance beam for connecting with a hook, and two lifting lugs at both ends of the lifting balance beam for connecting with slings.

[0015] As described above, a slender container flipping tool has a flipping ring divided into three sections. The two ends are equipped with trunnions, while the middle section is not equipped with trunnions. The sections are connected by bolt assemblies. After assembly, the two trunnions are in a horizontal position. The flipping ring is designed with a rubber pad inside to increase the friction between it and the equipment.

[0016] A method for flipping an elongated container includes the following steps:

[0017] 1) Transport the voltage stabilizer through the logistics gate to the ±0.000m hoisting hall inside the factory building;

[0018] 2) Connect the ring crane hook to the lifting balance beam using wire ropes and shackles, and connect the lifting balance beam to the equipment body clamps using slings; after a lifting test, lift the voltage stabilizer together with the transport saddle to the overturning area;

[0019] 3) Lay a rubber pad on the ground at the bottom of the voltage stabilizer, use a ring crane to hoist the tilting bracket to the bottom of the voltage stabilizer, align the bolt holes of the tilting bracket flange with the bottom flange of the voltage stabilizer, and use a bolt assembly to connect and fix the two; the tilting bracket support point A should be in full contact with the rubber pad on the ground;

[0020] 4) Install the flip-over clamp between the voltage regulator transport saddles and fix the flip-over clamp to the designated position on the voltage regulator body with bolt assembly. After installation, the flip-over clamp trunnion should be in a horizontal position.

[0021] 5) Install a tilting bracket at the bottom annular flange of the voltage regulator, and use bolts to fasten the tilting bracket to the annular flange of the voltage regulator.

[0022] 6) Remove the bolt assembly between the transport saddle and the fixing flat steel, and remove the flat steel;

[0023] 7) Connect and secure the ring crane hook to the lifting balance beam using lifting slings and shackles;

[0024] 8) Install a sling at each of the two lifting lugs below the lifting balance beam using shackles;

[0025] 9) Connect the other end of the sling to the trunnion of the flip-over shackle;

[0026] 10) After the lifting test has been completed and the problem is confirmed, slowly lift the voltage stabilizer;

[0027] 11) After the voltage stabilizer is flipped to the vertical position, place sleepers under the flipping bracket;

[0028] 12) Remove the connecting bolts between the flip bracket and the annular flange of the voltage regulator;

[0029] 13) The voltage regulator is hoisted to the top of the voltage regulator room using a ring crane;

[0030] 14) Slowly lower the voltage regulator and fine-tune its position;

[0031] 15) When the voltage stabilizer is lowered to about 100mm from the pad, connect the pad and anchor bolts to the voltage stabilizer;

[0032] 16) Finally, position the voltage regulator on the -6.5m equipment foundation.

[0033] The significant effects of this invention are: (1) All components of the tool of this invention are made of common materials, resulting in low manufacturing costs; the structure is simple and easy to manufacture. (2) The tool of this invention is easy to install and dismantle, reducing labor intensity and construction risks. (3) The tool of this invention is suitable for various installation environments, has no interface with the outside world, avoids interface risks, and greatly reduces the requirements for construction site conditions. (4) The tool and method of this invention have a wide range of applications, not only applicable to the installation and flipping of nuclear power plant regulators, but also applicable to the installation and flipping of various slender containers. Attached Figure Description

[0034] Figure 1a Overall structure diagram of the flip tool;

[0035] Figure 1b yes Figure 1a The right view;

[0036] Figures 2a-2e It is the entire process of the voltage regulator flipping;

[0037] Figure 3 Flip-up bracket diagram

[0038] Figure 4 Schematic diagram of lifting balance beam

[0039] Figure 5 Flip ring diagram

[0040] In the diagram: 1. Lifting balance beam; 2. Tilting bracket; 3. Transport saddle; 4. Tilting clamp; 5. Transport saddle; 6. Lifting sling; 7. Center of gravity position. Detailed Implementation

[0041] A slender container tipping tool mainly consists of a lifting balance beam 1, a tipping ring 4, a tipping bracket 2, and lifting slings. See details below. Figure 1a , 1b The container is transported to the site, and together with the transport saddle, it is unloaded and hoisted to the tilting position. The tilting bracket 2 is connected and fixed to the base flange of the voltage stabilizer using bolt assemblies. The tilting clamp 4 is installed on the upper part of the voltage stabilizer, and the connection and fixing device between the transport saddle and the voltage stabilizer body is removed. The hook is connected to the lifting balance beam 1 using slings, and the slings are connected to the trunnions of the lifting balance beam and the tilting clamp 4 respectively. A lifting test is conducted, and after checking that everything is correct, the voltage stabilizer is tilted and erected, and then hoisted to the installation position.

[0042] The voltage regulator switching process involves five stages, such as... Figures 2a-2eWhen flipped to state #3, the center of gravity of the equipment is kept inside the lifting point and the support point by switching between support points A and B, thereby controlling the acceleration of the center of gravity during rotation. When flipped to state #4, the equipment is continued to be hoisted through support point B until it is vertical. Then, sleepers are placed under the suspended part of the flipped bracket, and the bolt assembly connecting the flipped bracket and the equipment base is removed.

[0043] The flip-over bracket is mainly made of steel plates and I-beams through processing and welding, such as Figure 3 As shown, the position and size of the bolt holes on its flange should correspond to the bolt holes on the base plate flange of the voltage stabilizer. Support points A and B are designed with a circular arc structure to facilitate the equipment's rotation. At the same time, rubber is laid on the ground during the rotation process to increase its friction and prevent it from tipping over or sliding.

[0044] The hoisting balance beam is mainly made of steel plates and I-beams, processed and welded together. Figure 4 As shown, the upper part of the lifting balance beam is equipped with two lifting lugs for connecting with the hook, and the two ends of the lifting balance beam are equipped with two lifting lugs for installing slings that connect with the rotating trunnion shaft.

[0045] The flip-over retainer is mainly made of steel plates and steel pipes through processing and welding, such as Figure 5 As shown, the flip ring is divided into three sections, two of which are equipped with trunnions and one section is not equipped with a trunnion. The sections are connected by bolt assemblies. After being assembled into a whole, the two trunnions are in a horizontal position. The flip ring is designed with rubber pads inside to increase the friction between it and the equipment, prevent slippage, and effectively protect the surface of the equipment body.

[0046] A method for a slender container flipping tool includes the following:

[0047] 1) Transport the voltage stabilizer through the logistics gate to the ±0.000m hoisting hall inside the factory building;

[0048] 2) Connect the ring crane hook to the lifting balance beam using wire ropes and shackles, and connect the lifting balance beam to the equipment body clamps using slings; after a lifting test, lift the voltage stabilizer together with the transport saddle to the overturning area;

[0049] 3) Lay a rubber pad on the ground at the bottom of the voltage stabilizer, use a ring crane to hoist the tilting bracket to the bottom of the voltage stabilizer, align the bolt holes of the tilting bracket flange with the bottom flange of the voltage stabilizer, and use a bolt assembly to connect and fix the two; the tilting bracket support point A should be in full contact with the rubber pad on the ground;

[0050] 4) Install the flip-over clamp between the voltage regulator transport saddles and fix the flip-over clamp to the designated position on the voltage regulator body with bolt assembly. After installation, the flip-over clamp trunnion should be in a horizontal position.

[0051] 5) Install a tilting bracket at the bottom annular flange of the voltage regulator, and use bolts to fasten the tilting bracket to the annular flange of the voltage regulator.

[0052] 6) Remove the bolt assembly between the transport saddle and the fixing flat steel, and remove the flat steel;

[0053] 7) Connect and secure the ring crane hook to the lifting balance beam using lifting slings and shackles;

[0054] 8) Install a sling at each of the two lifting lugs below the lifting balance beam using shackles;

[0055] 9) Connect the other end of the sling to the trunnion of the flip-over shackle;

[0056] 10) After the lifting test has been completed and the problem is confirmed, slowly lift the voltage stabilizer;

[0057] 11) After the voltage stabilizer is flipped to the vertical position, place sleepers under the flipping bracket;

[0058] 12) Remove the connecting bolts between the flip bracket and the annular flange of the voltage regulator;

[0059] 13) The voltage regulator is hoisted to the top of the voltage regulator room using a ring crane;

[0060] 14) Slowly lower the voltage regulator and fine-tune its position;

[0061] 15) When the voltage stabilizer is lowered to about 100mm from the pad, connect the pad and anchor bolts to the voltage stabilizer;

[0062] 16) Finally, position the voltage regulator on the -6.5m equipment foundation.

Claims

1. A method for flipping a slender container, characterized in that, A slender container flipping tool is used for flipping. The structure of this slender container flipping tool is as follows: The slender container overturning tool includes a lifting balance beam (1) set above the overturned part, an overturning clamp (4) set on the overturned part, the lifting balance beam (1) being connected to the overturning clamp (4) via a sling (6), and an overturning bracket (2) set at the bottom of the overturned part. Several transport saddles are installed on the overturned component; There are two transport saddles, which are respectively set on both sides of the flip ring (4); The flip bracket (2) consists of two parts, an upper and a lower part. The upper part of the flip bracket (2) is circular and its size matches the bottom size of the flipped part. The lower part of the flip bracket (2) is "L" shaped. The surfaces of the flip bracket (2) that come into contact with the ground during the flipping process are all arc-shaped; A method for flipping a long, narrow container includes the following steps: The voltage stabilizer was transported through the logistics gate to the ±0.000m hoisting hall inside the factory building; The ring crane hook is connected to the lifting balance beam using wire ropes and shackles, and the lifting balance beam is connected to the equipment body clamps using slings; after a lifting test, the voltage stabilizer, together with the transport saddle, is lifted to the overturning area; Lay a rubber pad on the ground at the bottom of the voltage regulator. Use a ring crane to hoist the tilting bracket to the bottom of the voltage regulator. Align the bolt holes of the tilting bracket flange with the corresponding bolt holes of the bottom flange of the voltage regulator, and use a bolt assembly to connect and fix the two. The tilting bracket support point A should be in full contact with the rubber pad on the ground. Install a flip-over ring between the voltage regulator transport saddles and fix the flip-over ring to the designated position on the voltage regulator body with a bolt assembly. After installation, the flip-over ring trunnion is in a horizontal position. Install a flip bracket at the bottom annular flange of the voltage regulator, and use bolts to fasten and fix the flip bracket to the annular flange of the voltage regulator. Remove the bolt assembly between the transport saddle and the fixing flat steel, and remove the flat steel; The ring crane hook is connected and fixed to the lifting balance beam using lifting slings and shackles; Install a sling at each of the two lifting lugs below the lifting balance beam using shackles; Connect the other end of the sling to the trunnion of the flip-ring; After the lifting test and inspection confirmed that everything was in order, the voltage regulator was slowly lifted. After the voltage stabilizer is flipped to the vertical position, sleepers are placed at the bottom of the flipping bracket; Remove the connecting bolts between the flip bracket and the annular flange of the voltage regulator; The voltage regulator was hoisted to the top of the voltage regulator room using a ring crane. Slowly lower the voltage regulator and fine-tune its position; When the voltage stabilizer is lowered to about 100mm from the pad, connect the pad and anchor bolts to the voltage stabilizer. The voltage regulator was finally installed on the -6.5m equipment foundation.

2. The method for flipping a slender container as described in claim 1, characterized in that: Two lifting lugs are provided on the upper part of the hoisting balance beam (1) for connecting with the hook. Two lifting lugs are provided at both ends of the hoisting balance beam (1) for connecting with the sling (6).

3. The method for flipping a slender container as described in claim 2, characterized in that: The flip ring (4) is divided into three sections, with trunnions at both ends and no trunnions in the middle section. The sections are connected by bolt assemblies. After assembly, the two trunnions are in a horizontal position. The flip ring (4) has a rubber pad inside to increase the friction between it and the equipment.

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