CN202465194U - Large-size modularized component transporting device of steel containment vessel of nuclear power station nuclear island - Google Patents

Abstract

The purpose of the utility model is to provide a large-scale modular component transportation device for the nuclear island steel containment of nuclear power plant, so as to solve the transportation problem of the large-scale modular component. Wherein, the bottom head transportation bracket device in the transportation device includes a flatbed car and a bracket, and the bracket includes a plurality of jack supports; the jack supports include a fixed seat, a jack, a slide bar, a lower hinge seat and an upper hinge seat, and the fixed The seat is in the shape of a cylinder, and a jack is installed in it. The upper part of the jack is connected to the slide bar. The slide bar is inserted on the fixed seat and forms a sliding pair with the fixed seat. There are multiple jack supports arranged in a row in the bracket, and the upper hinge seat of the jack support is located in a curved surface; four flat cars are arranged in a square, and the flat car connecting frames between the flat cars are connected together. Holds a bracket.

Description

Large-scale modular component transport device for nuclear island steel containment of nuclear power plant

technical field

The utility model relates to a transport device, in particular to a transport device for large components.

Background technique

The steel containment CV is constructed using the AP1000 nuclear power technology of Westinghouse Corporation of the United States. AP1000 is an advanced passive pressurized water reactor nuclear power technology. System", which further improves the safety of nuclear power plants, and can also significantly reduce the cost of nuclear power unit construction and long-term operation.

The steel containment vessel (CV) is the core equipment on the main construction path of the AP1000 nuclear power project. Contains radiation from the core.

The shape of the steel containment vessel is a cylindrical container, which is composed of a cylindrical cylinder in the middle and two upper and lower "pot bottom"-shaped heads (bottom head and top head). The bottom head and the top head have four rings and three ring welds respectively, which are made of 64 steel plates. The cylindrical cylinder in the middle has 11 circles in total, and each layer is made of 12 arc plates. In order to shorten the construction period, it is divided into four sections of modules (1# cylinder module, 2# cylinder module, 3# Cylinder module, 4# cylinder module).

The steel containment vessel consists of 272 plates, with thicknesses of 41.3mm, 44.5mm, and 47.6mm, and the thickest steel plate reaches 47.6mm. Its maximum diameter is 39624mm, total height is 65633mm, volume is about 70000m3, total weight is about 3600t, the largest single plate size is about 10.4×3.9m, and the heaviest plate is about 15.7 tons. tons, and the total weight of the hoisting beam is about 251.5 tons.

The shape of the bottom head is approximately semi-ellipsoidal, with a total weight of about 741.23 tons and a height of 11.5 meters after assembly. The maximum height of the cylinder after assembly is 11.671 meters. Deformation is easy to occur during the process, and any partial or overall deformation of any component after transportation will have a major impact on the installation of the entire containment vessel. In order to ensure safety and minimize deformation during the overall transportation process, there are high requirements for transportation equipment, transportation tools, transportation parameters and transportation technology.

Utility model content

The purpose of the utility model is to provide a large-scale modular component transport device for the nuclear island steel containment shell of a nuclear power plant, so as to solve the transportation problem of the large-scale modular component.

In order to achieve the stated purpose, the large-scale modular component transport device for nuclear power plant nuclear island steel containment is characterized in that it includes a bottom head transport bracket device, and the bottom head transport bracket device includes a flatbed car and a bracket, and the bracket includes A plurality of jack supports; among them, the jack support includes a fixed seat, a jack, a sliding rod, a lower hinge seat and an upper hinge seat. The fixed seat is in the shape of a cylinder, and a jack is installed in it. On the fixed seat, and form a sliding pair with the fixed seat, the upper part of the slide bar is fixedly installed with the lower hinge seat, and the lower hinge seat and the upper hinge seat are hinged; the plurality of jack supports are arranged in a row in the bracket, and each jack support The upper hinge seat of the utility model is located in an arc surface; four flat cars are arranged in a square shape, and the flat car connecting frames between the flat cars are connected together, and each flat car carries a bracket.

The further feature of the large-scale modular component transport device for the nuclear island steel containment of the nuclear power plant is that there are six jacks in the bracket, and the six jacks are arranged in three rows.

A further feature of the large-scale modular component transport device for the nuclear island steel containment of the nuclear power plant is that the upper hinge seat has an upper hinge seat lug plate, the lower hinge seat has a lower hinge seat ear plate, and the upper hinge seat lug The lever and the lower hinge seat lug are connected by a pin, and the upper hinge seat ear lever can rotate around the pin, and the upper side of the upper hinge seat is additionally provided with a wear-resistant material.

The further feature of the large-scale modular component transport device for the nuclear island steel containment of the nuclear power plant is that it also includes the first, second, and third ring transport bracket devices of the cylinder body, and the first, second, and third ring transport bracket devices of the cylinder body include Flatbed truck, retaining frame, reinforcement ring, and wire rope fixing device; among them, the reinforcement ring includes the reinforcement ring installed outside the first ring of the steel containment shell of the nuclear power plant nuclear island, that is, the external reinforcement ring, which is installed inside the second ring of the cylinder The reinforcement ring, that is, the internal reinforcement ring, and the temporary reinforcement ring installed outside the third ring of the cylinder, that is, the external temporary reinforcement ring; the baffle includes the bottom support bracket, the outer baffle and the inner baffle, and the bottom support bracket is placed On the flatbed truck, the outer baffle and the inner baffle are fixed on the bottom support bracket, the outer baffle and the inner baffle are spaced apart, and the space between the two is used to place the first ring of the cylinder and the second ring of the cylinder Or the third ring of the cylinder body, there is also a groove protection block placed on the bottom support bracket, and the groove at the bottom of the first ring of the cylinder body is inserted into the groove protection block; the wire rope fixing device includes a fixing frame and a chain hoist. The opposite sides in the diameter direction of the upper edge of the first ring of the cylinder body, the second ring of the cylinder body or the third ring of the cylinder body are respectively fixed with the fixing frame, and the lifting lugs of the fixing frame on the two opposite sides are connected by a steel wire rope. The chain hoist is tightened; in the first, second and third ring transport bracket device of the cylinder, four flat cars are arranged in a square and connected together by the flat car connecting frame, and each flat car is placed with the block frame.

The further feature of the large-scale modular component transport device for the nuclear island steel containment of the nuclear power plant is that it also includes the fourth ring transport bracket device of the cylinder body, and the fourth ring transport bracket device of the cylinder body includes a flat car, a wire rope fixed device and load distribution plate; wherein, the load distribution plate is placed on the flatbed truck, and the load distribution plate carries the groove protection block of the fourth ring of the cylinder; the wire rope fixing device includes a fixing frame and a hand chain hoist, The opposite sides in the diameter direction of the side edge are respectively fixed with fixed frames, and the lifting lugs of the fixed frames on the two opposite sides are connected by steel wire ropes, and the steel wire ropes are tightened by hand chain hoists; in the fourth ring transport bracket device of the cylinder, four vehicles The flatbed trucks are arranged in a square and connected together by the flatbed truck connecting frame to facilitate synchronous operation, and the load distribution board is placed on each flatbed truck.

Due to the flexibility of the upper hinge seat, the tightening effect of the wire rope fixing device, the strengthening effect of the reinforcing ring, etc., each bracket device can adapt to the stress and deformation of the bottom head and the cylinder itself during transportation. In the new practice, the deformation of the bottom head and cylinder during transportation is within an acceptable range.

Description of drawings

Figure 1 is a schematic diagram of the overall structure of the bottom head transport bracket of the steel containment vessel.

Figure 2 is a schematic diagram of the structure of the bottom head support of the steel containment vessel.

Figure 3 is a schematic isometric view of a jack stand.

Figure 4 is a half sectional view of the jack stand.

Fig. 5 is a structural schematic diagram of the first, second and third ring transport brackets of the cylinder of the steel containment vessel.

Fig. 6 is a structural schematic diagram of the fourth ring transport bracket of the cylinder of the steel containment vessel.

Detailed ways

first embodiment

As shown in Figures 1 to 4, it is the first embodiment of the large-scale modular component transport device for the nuclear island steel containment vessel of the nuclear power plant, which is used to transport the bottom head of the nuclear plant nuclear island steel containment vessel. For the convenience of description, the following The first embodiment is referred to as "bottom head transport pallet arrangement".

The bottom head transportation bracket device includes a flatbed truck 1 , a bracket 2 and a jack support 3 .

As shown in FIGS. 3 and 4 , the jack support 3 includes a fixed seat 31 , a jack 32 , a slide bar 34 , a lower hinge seat 35 and an upper hinge seat 39 . Fixing seat 31 becomes cylinder shape, and jack 32 is installed in it, and jack pad 33 is established at the bottom of jack 32 . The upper part of the jack 32 is connected with a sliding rod 34, and the sliding rod 34 is inserted on the fixing seat 31, and forms a sliding pair with the fixing seat 31. The top of slide bar 34 is fixedly installed lower hinge base 35, and lower hinge base 35 is hinged with upper hinge base 39, so that upper hinge base 39 can swing around pin 37. Specifically, the lower hinge seat 35 has a lower hinge seat ear plate 36, and the upper hinge seat 39 has an upper hinge seat ear plate 38, and the pin 37 runs through the holes on the lower hinge seat ear plate 36 and the upper hinge seat ear plate 38, so as to Make upper hinge seat 39 swing around pin 37. The upper side of the upper hinge seat 39 is additionally provided with a wear-resistant material 30 . The purpose of increasing the wear-resistant material 30 on the upper winch 39 is to prevent the trailer from moving and prevent the direct contact between the transport bracket and the bottom head from damaging the surface of the bottom head when the vehicle group is jacked up. As shown in Figure 1, the upper side of the upper hinge seat 39 is the bearing surface of the bottom head of the steel containment of the nuclear power plant nuclear island. Since the upper hinge seat 39 can swing relative to the fixed lower hinge seat 35, it can flexibly adapt to the bottom The curvature of the outer surface of the head.

As shown in Figure 2, the bracket 2 is a stable structure, which provides firm support for the jack support 3. A plurality of H-shaped steels can be selected for the bracket 2 to be welded into a truss structure. The bracket 2 has a horizontal support bottom, and The bottom is placed on the flatbed 1 with a horizontal support. The jack support 3 is a part of the bracket 2, and the H-shaped steel around the jack support 3 can be radially arranged. In the embodiment shown in Figure 2, there are six jack supports 3 in the bracket 2, and the six jack supports 3 are arranged in three rows, each row has two, and the upper hinge seats of all the jack supports 3 36 is located in an arc, which has approximately the same arc as the outer surface of the bottom head of the steel containment, plus the upper hinge seat 36 can flexibly swing (can make up for manufacturing and installation errors), so every The upper hinge seat 39 of each jack support 3 can carry the bottom head according to the design requirements.

As shown in Figure 1, four flat cars 1 are arranged in a square, and two adjacent flat cars 1 are connected together by a flat car connecting frame 4, so that four flat cars 1 are connected as a whole, and each flat car carries a bracket 2. The flatbed truck connecting frame 4 is mainly to connect each flatbed truck 1 together to make it run synchronously.

In addition, in a preferred embodiment of the present utility model, after the contact between the bracket 2 and the bottom head, a limit block is welded on the bottom head at the upper position of the lug plate of the upper hinge seat to limit the lifting and lowering of the car group. The bottom head slips relative to the bracket during transportation.

2nd embodiment

As shown in Figure 5, it is the second embodiment of the large-scale modular component transport device for the nuclear island nuclear island steel containment vessel, which is used to transport the first, second and third rings of the cylinder of the nuclear power plant nuclear island steel containment vessel. For the convenience of description, The first embodiment is referred to as "the first, second, and third ring transport bracket device of the cylinder body" hereafter.

The first, second, and third ring transport bracket devices of the cylinder body include a flatbed truck 1, a retaining frame, a reinforcing ring, a wire rope fixing device, and the like.

There are three kinds of reinforcement rings, one is the reinforcement ring installed outside the first ring of the cylinder, called the external reinforcement ring; the other is the reinforcement ring installed inside the second ring of the cylinder, called the internal reinforcement ring; the third The second is the temporary reinforcement ring installed outside the third ring of the cylinder, called the external temporary reinforcement ring 7, which is only used to control the shape deformation during transportation and needs to be removed after transportation. The aforementioned outer and inner reinforcing rings are not shown in the figures.

Block frame comprises bottom support bracket 50, outer block frame 51 and interior block frame 52, and bottom support bracket 50 is placed on the flatbed truck 1, and outer block frame 51 and interior block frame 52 are fixed on the bottom support bracket 50, and outer block frame The frame 51 and the inner baffle frame 52 are spaced apart, and the gap between the two is used to place the first ring of the cylinder (also the second ring of the cylinder or the third ring of the cylinder). In addition, a groove protection block 54 is also placed on the bottom support bracket 50, and the groove at the bottom of the first ring of the cylinder is inserted into the groove protection block 54 to protect the groove. When installing, the groove protection block 54 is placed in advance On the bottom supporting bracket 50, during the lifting process of the flatbed truck, adjust the position of the groove protection block 54 so that the groove at the bottom of the cylinder can be smoothly inserted into the groove protection block 54 and tightened.

The wire rope fixing device includes a fixed frame 61, a wire rope clamp, a chain block 63, etc., wherein the fixed frame 61 is composed of a plurality of arc-shaped steel plates and a plurality of lifting lugs. The opposite sides in the diameter direction of the upper side edge of the cylinder body third ring) are respectively fixed with fixed mounts 61, and the lifting lugs of the fixed mounts 61 on the two opposite sides are connected by steel wire ropes 62 and tightened by hand chain hoists 63 to play To prevent deformation, the wire rope clamp is used to fix the end of the wire rope. The total station can be used to measure the radius value of the fixed point of the fixed frame position, and the change of its value indicates that the wire rope has been tightened.

In the embodiment shown in FIG. 5 , the same as the first embodiment, four flatbed trucks 1 are arranged in a square and connected together by the flatbed truck connecting frame 4 to facilitate synchronous operation. Block frame is placed on every flat car 1.

3rd embodiment

As shown in Figure 6, it is the third embodiment of the large-scale modular component transport device for nuclear power plant nuclear island steel containment, which is used to transport the fourth ring of the cylinder of nuclear power plant nuclear island steel containment. For the convenience of description, the following The first embodiment is called "Cylinder Fourth Ring Transport Bracket Device".

As shown in FIG. 6 , the fourth ring transport bracket device of the cylinder includes a flatbed car 1 , a wire rope fixing device and a load sharing plate 8 .

The fourth ring of the cylindrical body has only two rings of steel plates without a reinforcement ring, but a ring hanging beam 77 is designed inside the first ring of steel plates of the fourth ring. Considering the difference between the structure of the ring and the structure of the first, second and third rings of the cylinder, appropriate changes have been made in the design of the transport bracket, which is simpler and does not affect the deformation of the transport. Compared with the second embodiment, the inner and outer baffles are cancelled, and in order to slow down the upturning trend of the car body and other factors, a load sharing plate 8 is added between the groove protection plate 54 and the thick steel plate 100 of the flatbed truck 1 . The wire rope fixing device is similar to the second embodiment, including a fixing frame 61, a wire rope clamp, a chain block 63, etc., wherein the fixing frame 61 is composed of a plurality of arc-shaped steel plates and a plurality of lifting lugs, and is placed on the upper side of the fourth ring of the cylinder. The opposite sides of the diametrical direction of the edge are respectively fixed with fixed mounts 61, and the lugs of the fixed mounts 61 on the two opposite sides are connected by steel wire ropes 62 and tightened by chain hoists 63 to prevent deformation. The wire rope clips are used for Secure the end of the wire rope. The total station can be used to measure the radius value of the fixed point of the fixed frame position, and the change of its value indicates that the wire rope has been tightened.

In the embodiment shown in FIG. 6 , the same as the first embodiment, four flatbed trucks 1 are arranged in a square and connected together by the flatbed truck connecting frame 4 to facilitate synchronous operation. Load sharing board 8 is placed on every flat car 1 .

Claims (5)

1. The large modular component transportation device for the steel containment vessel of the nuclear island of the nuclear power station is characterized by comprising a bottom head transportation bracket device, wherein the bottom head transportation bracket device comprises a flat car and a bracket, and the bracket comprises a plurality of jack supports;

the jack support comprises a fixed seat, a jack, a sliding rod, a lower hinged seat and an upper hinged seat, the fixed seat is cylindrical, the jack is installed in the fixed seat, the upper part of the jack is connected with the sliding rod, the sliding rod is inserted in the fixed seat and forms a sliding pair with the fixed seat, the upper part of the sliding rod is fixedly provided with the lower hinged seat, and the lower hinged seat is hinged with the upper hinged seat;

the jack supports are arranged in a row in the bracket, and the upper hinged support of each jack support is positioned in an arc surface;

the four flat cars are arranged in a square shape, the flat car connecting frames are connected together between the flat cars, and each flat car is provided with a bracket.

2. The large modular component transportation apparatus for a steel containment vessel in a nuclear power plant nuclear island as claimed in claim 1, wherein six jacks are provided in the cradle, and the six jacks are arranged in three rows.

3. The large modular component transportation apparatus for a steel containment vessel of a nuclear island of a nuclear power plant as claimed in claim 1, wherein the upper hinge base has an upper hinge base ear plate, the lower hinge base has a lower hinge base ear plate, the upper hinge base ear plate and the lower hinge base ear plate are connected by a pin, the upper hinge base ear plate can rotate around the pin, and the upper side surface of the upper hinge base is attached with a wear-resistant material.

4. The large modular component transportation device for the steel containment vessel of the nuclear island of the nuclear power plant as claimed in claim 1, further comprising a first two second three-ring transportation bracket device of the cylinder, wherein the first two second three-ring transportation bracket device of the cylinder comprises a flat car, a baffle frame, a reinforcing ring and a steel wire rope fixing device; wherein,

the reinforcing rings comprise a reinforcing ring, namely an external reinforcing ring, arranged outside a first ring of a cylinder body of the steel containment vessel of the nuclear island of the nuclear power station, a reinforcing ring, namely an internal reinforcing ring, arranged inside a second ring of the cylinder body, and a temporary reinforcing ring, namely an external temporary reinforcing ring, arranged outside a third ring of the cylinder body;

the baffle frame comprises a bottom supporting bracket, an outer baffle frame and an inner baffle frame, the bottom supporting bracket is placed on the flat car, the outer baffle frame and the inner baffle frame are fixed on the bottom supporting bracket and are spaced, a first barrel ring, a second barrel ring or a third barrel ring are placed in the space between the outer baffle frame and the inner baffle frame, a groove protecting block is also placed on the bottom supporting bracket, and a groove bearing at the bottom of the first barrel ring is inserted into the groove protecting block;

the steel wire rope fixing device comprises a fixing frame and a chain block, wherein the fixing frame is fixedly arranged on the opposite sides of the diameter direction of the upper side edge of the first ring of the cylinder body, the second ring of the cylinder body or the third ring of the cylinder body respectively;

in the first, second and third ring transport bracket device of the cylinder, four flat cars are arranged in a square shape and connected together through a flat car connecting frame, and the blocking frame is placed on each flat car.

5. The large modular component transportation device for the steel containment vessel of the nuclear island of the nuclear power plant as claimed in claim 1, further comprising a barrel fourth ring transportation bracket device, wherein the barrel fourth ring transportation bracket device comprises a flat car, a steel wire rope fixing device and a load distributing plate; wherein,

the load sharing plate is placed on the flat car and bears the groove protection block on the fourth ring of the cylinder;

the steel wire rope fixing device comprises a fixing frame and a chain block, wherein the fixing frame is fixedly arranged on the opposite sides of the diameter direction of the upper side edge of the fourth ring of the cylinder body respectively, lifting lugs of the fixing frames on the two opposite sides are connected through a steel wire rope, and the steel wire rope is tightened by the chain block;

in the fourth ring transport bracket device of the cylinder, four flat cars are arranged in a square shape and are connected together through a flat car connecting frame so as to synchronously run, and the distributing plate is arranged on each flat car.

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