CN210127014U - Pipe plate component lifts by crane and stands up frock - Google Patents

Abstract

The utility model relates to a 300MW Pressurized Water Reactor (PWR) nuclear power steam generator's tube sheet subassembly is with lifting by crane and standing up frock, and this frock includes hoist and fastener. 300MW pressurized-water reactor (PWR) nuclear power steam generator tube sheet structure is different with other nuclear power station tube sheet structures, is equipped with special ear seat structure, the utility model discloses the special construction of make full use of tube sheet changes the scheme of welding the lug in the tube sheet facial make-up in the past, and the design has made the tube sheet subassembly and has lifted by crane and stand up the frock, under the prerequisite that protection tube sheet subassembly ear seat position no longer received the damage, has realized the tube sheet subassembly effectively stable lift by crane, has shifted, has stood up the equal operation.

Description

Pipe plate component lifts by crane and stands up frock

Technical Field

The utility model relates to a frock is stood up in lifting by crane that tube plate subassembly was used, especially 300MW Pressurized Water Reactor (PWR) nuclear power steam generator tube plate subassembly is stood up in lifting by crane.

Background

A300 MW Pressurized Water Reactor (PWR) nuclear power station is provided with two loops and two steam generators in each system, a tube plate assembly of each steam generator is a core component and is a boundary component of a loop and a secondary loop, the tube plate assembly needs to be lifted, transferred, turned over and the like for a plurality of times in the manufacturing process, and because the tube plate and the tube plate assembly are relatively heavy, a crane is needed for assisting the lifting, transferring and turning over of the tube plate and the tube plate assembly. This requires suitable suspension points on the tube sheet or tube sheet assembly. However, neither the tube sheet nor the assembled tube sheet assembly itself has a structure suitable for use as a crane hoist point.

According to experience in the past, for the lifting of tube sheet subassembly stands up, mostly has welded thicker lug at the tube sheet outer wall dress, but weld the lug at the tube sheet outer wall, and not only the welding volume is big, demolishs comparatively difficultly, has the risk of damaging tube sheet outer wall and tube sheet subassembly moreover, and is final state after final heat treatment when the lug is demolishd promptly, if there is the damage, need handle or even repair welding damage department, if need repair welding, then need increase thermal treatment.

This is because, on one hand, the welding lugs on the outer wall of the tube plate are too fast in heat conduction of the metal during welding, and the local high-temperature fast cooling of the welding can cause a large temperature gradient locally, thereby causing non-uniformity of the crystalline state of the metal, and easily causing local embrittlement. On the other hand, the metal is sensitive to temperature-density change, and uneven temperature distribution can cause more micro-bubble cracks and local residual stress, so that the metal becomes a fracture source during working. The unsoldering operation when the lifting lug is dismantled is also heat treatment, which can cause secondary damage to the tube plate.

In addition, the tube plate is the core part of the steam generator, and the requirement on cleanliness is very strict. The lug splashes and smoke dust produced in the dismantling process easily fall into the tube plate assembly, and disadvantages are brought to product cleaning. Not only can increase the cleaning workload, but also can cause potential safety hazard if the cleaning is not clean.

Besides the installation and welding of the lifting lugs, the lifting and turning-over can be carried out in a rope binding mode. However, the tube sheet assembly has edges and corners, and the ropes are easily cut off, so that the risk of falling off exists.

The tube plate structure of the 300MW pressurized water reactor nuclear power system is special, and an ear seat is arranged on the ear seat, and an ear seat hole is arranged on the ear seat, but the ear seat hole is not suitable for being used as a crane hoisting point.

The reason is that the lug seat holes are machined when the tube plate is single-piece, and when the forge piece is supplied in a factory, the lug seat is in a full-circle structure, and is removed by a large rocker drill gang drill after arriving at the factory and is milled and formed. When the tube plate is machined singly, because the height dimension of the tube plate and the dimension of the straight section of the tube plate near the lug seat are relatively small, the requirements on the removal of the circle segment at the position of the lug seat and the machining tool and the cutter for machining the hole of the lug seat are low. If the ear seat hole is used for lifting and turning over, in order to prevent the final ear seat hole from being damaged, a margin needs to be left. After the tube plate assembly and the lower barrel assembly are assembled, the lug seat hole is required to be finally and finely machined, the structural size of the assembly is large at that time, the assembly can only be machined by a large-scale numerical control boring and milling machine, the barrels are arranged at two ends of the tube plate, the lug seat hole is radially closer to the outer wall of the barrel, the axial distance between the lug seat hole and the ports of the barrels at two sides is farther, the lug seat hole machining is seriously influenced, the requirements on the strength of a main shaft and a cutter bar of equipment and the like are strict, and even the machining cannot be carried. And the difficulty of re-machining at this time is necessarily higher than that of a single piece.

Therefore, it is necessary to design a hoisting and turning tool which does not damage the pipe plate component, is convenient to disassemble and has high safety performance in use.

SUMMERY OF THE UTILITY MODEL

In order to solve the problems, the inventor of the invention makes an intensive study to design a pipe plate assembly lifting and turning tool, in particular to a lifting and turning tool for a pipe plate assembly of a 300MW Pressurized Water Reactor (PWR) nuclear power steam generator. The tool mainly comprises a lifting appliance and a fastener, wherein the lifting appliance comprises a small lifting lug, a lifting lug or a lifting shaft, a clamping plate and a clamping hole. The utility model discloses the ear seat on the make full use of tube sheet subassembly links together hoist and ear seat through the fastener, changes the scheme of welding the lug in the past on the tube sheet subassembly, thereby has accomplished the utility model discloses a pipe sheet subassembly is provided with the lug, and the lug is provided with the lug.

Particularly, the utility model aims at providing following aspect:

the utility model discloses the first aspect provides a tube plate subassembly lifts by crane and stands up frock, especially 300MW Pressurized Water Reactor (PWR) nuclear steam generator tube plate subassembly stands up frock with lifting by crane.

A tube plate assembly lifting and turning tool comprises a tube plate 1, wherein an ear seat 11 is arranged on the outer wall of the tube plate 1, and an ear seat hole 111 is formed in the ear seat 11;

the tool comprises a lifting appliance 2 and a fastener 4;

the lifting appliance 2 comprises a small lifting lug 21, a clamping plate 23, a clamping hole 24 and a lifting lug 22 or a lifting shaft 32;

the tool is clamped on the lug seat 11 through a clamping plate 23, and the fastener 4 connects the lifting appliance 2 with the tube plate assembly through the lug seat hole 111 and the clamping hole 24.

The tube plate assembly further comprises a primary side cylinder 7, a lower cylinder III6 and an internal supporting block 8;

the primary side cylinder 7 is attached to the primary side of the tube plate 1, the lower cylinder III6 is attached to the secondary side of the tube plate 1, and the support block 8 is provided on the tube plate 1 and fixes the primary side cylinder 7 and the lower cylinder III6 when the cylinders are attached.

The number of the ear seats 11 is at least 3, 6 ear seat holes 111 are arranged on the ear seats 11, the diameter of each ear seat hole 111 is 66cm, and the ear seat holes 111 are distributed on the ear seats 11 in a 3 x 2 mode.

Wherein, the small lifting lug 21, the lifting lug 22 or the lifting shaft 32 and the clamping plate 23 are integrally formed; the sling composed of the lifting lugs 22 is a turning-over sling, and the sling composed of the lifting shafts 32 is a flat-hanging sling.

The clamping plate 23 is a U-shaped clamping plate and consists of an upper clamping plate 231, a lower clamping plate 232 and side clamping plates 233;

the small lifting lug 21 is arranged on the upper clamping plate 231 and used for lifting and transferring the tool;

wherein, the small lifting lug 21 is positioned at the gravity center of the lifting appliance 2;

the lifting lugs 22 or the lifting shafts 32 are arranged on the side clamping plates 233 and are used for lifting, transferring and turning over the tube plate assembly;

wherein, the shackle 5 is arranged on the lifting lug 22, and the baffle 35 is arranged on the end surface of the lifting shaft 32;

the clamping holes 24 are formed in the upper clamping plate 231 and the lower clamping plate 232 and are matched with the ear seat holes 111 formed in the ear seat 11.

The height of the side clamping plate 233 is at least 1-2mm higher than the thickness of the ear seat 11, and the thicknesses of the upper clamping plate 231, the lower clamping plate 232 and the side clamping plate 233 are kept consistent.

Wherein, the fastener 4 comprises a bolt 41 and a nut 42;

the bolts 41 are stud bolts, and one bolt 41 is provided with two nuts 42;

the outer diameter of the bolt 41 is smaller than the ear seat hole 111 on the ear seat 11;

the amount of the bolt 41 is determined by the number of the ear holes 111 of the ear mount 11.

The lifting turnover fixture is characterized in that the clamping plate 23 is clamped on the lug seat 11, the bolt 41 sequentially penetrates through the upper clamping plate 231, the lug seat hole 111 and the lower clamping plate 232, and the lifting turnover fixture is fixed with the tube plate assembly by screwing the nut 42.

Wherein, the fastener 4 is wrapped by a protective layer;

the protective layer is made of cloth and rubber.

When the tube plate assembly is lifted, transferred, turned over and the like, at least two horizontal lifting slings and one turning sling are installed on the tube plate.

The utility model provides a pipe plate subassembly lifts by crane and stands up frock has important meaning to the realization to the pipe plate subassembly lift by crane, shift, stand up the operation such as, etc.

The utility model discloses the beneficial effect who has includes:

1) the tube plate assembly lifting and turning tool has the advantages of small size, simple structure, low manufacturing difficulty, capability of being transformed according to actual products to be used, difficulty in damage and capability of being repeatedly used;

2) the tube plate assembly hoisting and turning tool has the advantages that the structure is mechanically clamped, the disassembly and the assembly are convenient, the operability is strong, the assembly and the disassembly can be carried out at any time according to the use requirement, and a plurality of tools can be used at the same time;

3) the tube plate component lifting and turning tool of the utility model is provided with a small lifting lug, which is convenient for lifting and transferring the lifting appliance;

4) the utility model discloses a tube sheet subassembly lifts by crane and stands up frock, links together hoist and ear seat through the fastener, changes the scheme that welds the lug on the tube sheet subassembly in the past, can overcome clothing and weld that the lug welding volume is big, welds and easily damages the tube sheet surface, need follow the verification of detecting a flaw after welding, and the lug needs to occupy for a long time simultaneously, the shortcoming that can't reuse;

5) the utility model discloses a tube sheet subassembly lifts by crane and stands up frock, what specially adapted 300MW Pressurized Water Reactor (PWR) nuclear steam generator tube sheet subassembly lifts by crane, shifts and stands up. The utility model makes full use of the tool and integrates the tool with the tube plate assembly through the ear seat hole structure on the tube plate, thereby avoiding the risks of falling and gouging of the product caused by the falling of the lifting rope in the conventional turning-over process;

6) when the tube plate assembly lifting and turning tool is adopted to lift and turn over, white cloth, rubber and the like are wrapped on the periphery of the fastener, so that the fastener can play a role of protecting the lug seat holes of the tube plate in the using process, and the risk that the rope hurts the surface of a product or the rope is cut by an acute angle of the product due to the change of the azimuth state in the prior binding, turning and lifting process is avoided;

7) the tube plate assembly lifting and turning tool is provided with the lifting shaft, the original mode that the rope stretches across and turns over around a product is changed into the mode that the tool lifting shaft is used for turning over, the turning over is flexible and stable, the baffle plate on the end face of the lifting shaft plays a limiting role, the risk that the rope is damaged due to friction between the rope and an acute angle of the product is avoided, and the safety is high;

8) the tube plate component lifting and turning tool is provided with the U-shaped clamping plate, and can play a role in protecting the tube plate lug seat in the lifting and turning process;

9) the utility model discloses a tube sheet subassembly lifts by crane and stands up frock and lifts by crane and stand up stably, and the security is high.

Drawings

FIG. 1 shows a schematic structural view of a tube sheet and an ear mount;

FIG. 2 shows a schematic cross-sectional structural view of a tube sheet assembly;

FIG. 3a is a front view showing an assembly state of the tube plate assembly hoisting and turning tool;

FIG. 3b is a plan view showing an assembly state of the tube plate assembly hoisting and turning tool;

FIG. 4 shows a schematic structural diagram of a lifting appliance and a fastener in the tube plate assembly lifting and turning tool;

fig. 5a is a front view showing a structural schematic diagram of a turnover lifting appliance in the tube plate assembly lifting and turnover tool;

FIG. 5b is a top view of a schematic structural diagram of a turnover lifting appliance in the tube plate assembly lifting and turnover tool;

FIG. 6a is a front view showing a structural schematic diagram of a flat lifting tool in the tube plate assembly lifting and turning tool;

fig. 6b is a top view of the structural schematic diagram of the flat lifting appliance in the tube plate assembly lifting and turning tool.

The reference numbers illustrate:

1-a tube plate;

11-ear mount;

111-ear mount hole;

2-lifting the hanger;

21-lifting lugs;

22-small lifting lug;

23-a clamping plate;

231-an upper clamping plate;

232-lower clamping plate;

233-side clamping plate;

24-installing a clamping hole;

3-horizontal hoisting sling;

31-a hanging shaft;

32-small lifting lugs;

33-a clamping plate;

34-installing a clamping hole;

35-a baffle;

4-a fastener;

41-bolt;

42-a nut;

5-shackle removal;

6-lower barrel III;

7-a primary side cylinder;

8-internal support block.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings and examples. The features and advantages of the present invention will become more apparent from the description.

The word "exemplary" is used exclusively herein to mean "serving as an example, embodiment, or illustration. Any embodiment described herein as "exemplary" is not necessarily to be construed as preferred or advantageous over other embodiments. While the various aspects of the embodiments are presented in drawings, the drawings are not necessarily drawn to scale unless specifically indicated.

The tube plate assembly is a core component of the steam generator, and has more stations and work types related to manufacturing, longer period and more times of lifting, transferring and overturning. The manufacturing process comprises the steps of surface machining of a to-be-welded surface after a tube plate is put into a factory, surface welding, machining of two side surfaces after the surface welding, machining of two side surfaces after heat treatment, assembling and butting with two side cylinders, butting, machining of two side grooves of a component after the heat treatment and the like.

The tube plate assembly is a core component of the steam generator, all operations must ensure that the surface of a product cannot be scratched or cut, and cannot be collided, and the like, and the requirements of clamping and aligning of each station are also met, and the most important is the safety in the operation process.

According to the prior treatment mode, the lifting and turning-over are realized mainly by using a mode of cross binding of ropes or a mode of welding lifting lugs on a product.

The mode risk of binding is great, drops at the in-process that stands up easily, and the mode of dress welding the lug can not take place to drop, but because the position of lug hole is fixed, does not have the hanging shaft structure that can rotate, when standing up, the phenomenon of mutual friction (especially when utilizing the scheme of binding to lift up and stand up) can appear between rope and the product, and the product all has the edges and corners structure, and when frictional force is great, can appear cutting the rope and the cracked condition.

According to the standard and the upstream technical requirements, the welded lifting lugs should be removed before the final heat treatment, and the defect detection is carried out on the removed positions, otherwise, the design institute is required to evaluate and approve the removal, if the lifting lugs are removed before the final heat treatment, the lifting and other work after the final heat treatment can only adopt the rope binding mode, and various risks such as dropping, cutting the ropes and the like can be caused, and if the lifting lugs are removed after the final heat treatment, the outer wall of a product is damaged, so that the repair welding is generated, and the risk of the heat treatment is increased.

Therefore, the utility model discloses in, provide a tube plate subassembly on the one hand and lift by crane and stand up frock, especially 300MW Pressurized Water Reactor (PWR) nuclear power steam generator tube plate subassembly stands up frock with lifting by crane.

In a preferred embodiment, the tube sheet assembly comprises a tube sheet 1, and the tube sheet 1 is structured as shown in fig. 1.

Generally, a tube plate is a fitting which is formed by machining a large number of holes slightly larger than the outer diameter of a tube on a forging by a deep hole drill, penetrating, expanding and welding the tube, and plays a role in exchanging heat between one side and the other side through the tube and isolating primary side radioactive substances. The utility model discloses in the tube sheet, the tube sheet before the tube hole BTA is not carried out to the finger, the tube sheet subassembly includes BTA.

In a preferred embodiment, the tube plate 1 is provided with an ear mount 11.

According to the utility model discloses, compare with other pressurized water reactor nuclear power system's tube sheet, 300MW pressurized water reactor nuclear power system's tube sheet structure is comparatively special, is equipped with the ear seat structure for be connected with nuclear power plant's system.

In a preferred embodiment, the number of ear mount 11 is plural, preferably at least 3, and more preferably 4.

In a preferred embodiment, the ear seats 11 are arranged on the outer wall of the tube plate 1, preferably uniformly in the circumferential direction of the outer wall of the tube plate 1.

In a further preferred embodiment, the number of the ear sockets 11 is 4, and the ear sockets are distributed in a cross shape on the outer wall of the tube plate 1.

In a preferred embodiment, the ear seat 11 of the present invention is provided with a plurality of ear seat holes 111.

In a further preferred embodiment, the ear seat 11 is provided with 6 ear seat holes 111, the diameter of the ear seat hole 111 is 66cm, and the ear seat holes 111 are arranged in a 3 × 2 manner on the ear seat 11.

In a preferred embodiment, the tube sheet assembly of the present invention further comprises a primary side cylinder 7, a lower cylinder III6, and an internal support block 8.

The tube plate is an important part for forming the steam generator, and before deep hole machining of the tube hole, two shell sections including the primary side cylinder 7, the lower cylinder III6 and the internal support block 8 need to be welded on the tube plate, and the two shell sections are assembled together to form a tube plate assembly, as shown in fig. 2.

The primary side of the tube plate 1 is the side through which coolant from the reactor pressure vessel flows after entering the steam generator (head of the water chamber), and the secondary side is the side of the water supply loop that is heated and generates steam. The primary side cylinder 7 is attached to the primary side of the tube plate 1, the lower cylinder III6 is attached to the secondary side of the tube plate 1, and the support block 8 is provided on the tube plate 1 and fixes the primary side cylinder 7 and the lower cylinder III6 when the cylinders are attached. The support block 8 is also partially disposed on the outer wall of the lower cylinder III 6.

To assemble these components together, the tubesheet assembly requires several lifts, transfers and turnups during the manufacturing process.

Because the tube plate and the tube plate assembly are heavier, a crane is needed for assisting in lifting, transferring and turning the tube plate and the tube plate assembly. This requires suitable suspension points on the tube sheet or tube sheet assembly.

The utility model discloses in, be provided with the ear seat hole on 300MW pressurized-water reactor nuclear power system's the tube sheet, if directly utilize the ear seat hole on the ear seat, install the hasp and lift by crane on the ear seat hole and stand up, use many times and will certainly produce the injury to the ear seat hole, make its unable requirement that satisfies the drawing, also can reduce the intensity of ear seat simultaneously.

Moreover, the size of the ear seat is large, and the ear seat can be implemented only by a large lock catch, and the lock catch can generate bump damage or press damage on edges and corners and the like of two ends of the ear seat hole, so that the final requirement cannot be met.

If the lock catch is not used, the rope directly passes through the ear seat hole, the edges and corners at the two ends of the ear seat hole and the periphery of the ear seat can cut the rope, and the rope has the risk of breakage.

Because the lug seat hole on the tube plate of the 300MW pressurized water reactor nuclear power system can not be directly used as a lifting point, and the tube plate assembly have no other structures suitable for being used as a lifting point of a crane, a lifting point is required to be additionally arranged on the tube plate.

In a preferred embodiment, tube sheet subassembly lift by crane and stand up frock, both include the lift by crane of tube sheet subassembly and stand up, also include the lift by crane of the tube sheet before not assembling and stand up, for convenient explanation, the utility model discloses in use the lift by crane of tube sheet subassembly to turn up as the example.

In a preferred embodiment, the tool of the present invention comprises a spreader 2 and a fastener 4.

The utility model discloses a lift by crane and stand up frock make full use of has this special construction of ear seat on the tube sheet, realized that the tube sheet subassembly is effectively stable lifts by crane, shifts, stands up the operation such as.

According to the utility model discloses, hoist 2 lifts by crane for the tube sheet subassembly and stands up and provides the hoisting point, and fastener 4 then couples together hoist 2 and tube sheet subassembly zonulae occludens.

In a preferred embodiment, the spreader 2 comprises small lifting lugs 21, lifting lugs 22, clamping plates 23 and clamping holes 24.

The small lifting lugs 21 are used for lifting and transferring the tool, the lifting lugs 22 are used for lifting, transferring and turning over the tube plate assembly, the clamping plates 23 are used for clamping the lifting and turning-over tool with the lug seats 11, and the clamping holes 24 are used for placing the fasteners 4.

In a preferred embodiment, in order to avoid welding the lifting lug 22 to the tube sheet 1, the lifting lug 22 is fixed to the clamping plate 23.

In a preferred embodiment, the shackle 22 may be mounted on the catch plate 23 by welding.

In a further preferred embodiment, the lifting lug 22 and the catch plate 23 may also be integrally formed.

Compare with the welding, the tensile strength and the yield strength of integrated into one piece's lug will be better. The processing mode of adopting integrated into one piece can reduce the risk that the lug 22 leads to the tube sheet subassembly to drop in the process of lifting, shifting and turning over because of the welding is not firm.

In a preferred embodiment, the card 23 is a U-shaped card, and is composed of an upper card 231, a lower card 232, and side cards 233.

In order to install the clip 23 on the ear mount 11, the utility model discloses be the U-shaped clip with the shape design of clip 23.

In a preferred embodiment, the U-shaped catch plate and the ear mount 11 are snap-fit together to mount the lifting lug 22 to the tube sheet 1.

Wherein, the mode that adopts the block links together hoist and ear seat 11, can not only increase the steadiness of connecting between the two, still helps protecting ear seat 11, avoids removing the in-process, because the damage that the collision caused ear seat 11.

In a preferred embodiment, the height of the side clamping plate 233 is greater than the thickness of the ear mount 11.

Wherein the spacing between the upper card 231 and the lower card 232 is critical to the mounting of the card 23. In order to allow the card 23 to be engaged with the ear seat 11, the distance between the upper card 231 and the lower card 232 needs to be limited.

The utility model discloses in, go up cardboard 231 and two terminal surfaces that cardboard 232 is relative each other down, be the lower terminal surface of last cardboard 231 and the up end of lower cardboard 232 respectively. The other surface opposite to the lower end surface of the upper card 231 is the upper end surface of the upper card 231, and the other surface opposite to the upper end surface of the lower card 232 is the lower end surface of the lower card 232.

Go up cardboard 231 and down interval between cardboard 232 and refer to the lower terminal surface of last cardboard 231 and the interval between the up end of lower cardboard 232, also be the height of side cardboard 233.

In a preferred embodiment, the height of the side clamping plate 233 is at least 1-2mm higher than the thickness of the ear seat 11.

When the device is used, the height of the side clamping plate 233 is slightly higher than that of the ear seat 11, and the gap is generally controlled to be about 1-2 mm. If the height is more, a base plate with holes with proper thickness can be added in the device, the holes on the base plate with holes correspond to the clamping holes 24 on the upper clamping plate and the lower clamping plate, the gap between the base plate with holes and the lug seat is ensured to be about 1mm, and the lifting and turning-over are more stable.

To ensure that the card 23 can be mounted to the seat plate, the height of the side card 233 should be slightly higher than the thickness of the ear mount 11.

The smaller the height difference between the two is, the more beneficial the hoisting and turning tool and the ear seat 11 are to be fixed together tightly, thereby increasing the stability in the hoisting and turning process.

However, if the height difference between the two is too small, the alignment difficulty of the catch plate 23 and the ear seat 11 is increased, and the ear seat 11 is easily scratched and pressed in the installation process, so that the ear seat 11 is damaged.

In a preferred embodiment, the card thickness of the upper card 231, the lower card 232 and the side card 233 is kept uniform.

Wherein the thickness of the sheet material should be selected for strength verification according to different tonnage of the product. Taking 50 tons of products as an example, the thickness of the clamping plate 23 is 70-80 cm.

If cardboard 23 is too thin, then the frock bearing capacity is just weak, and the pipe sheet subassembly has the risk of dropping in the in-process of removing. If the clamping plate 23 is too thick, the pressure borne by the lug seat 11 from the clamping plate 23 is larger, the lug seat is easy to bend, and the required bolt is longer and easy to bend.

In a preferred embodiment, the lifting lugs 22 are provided on side clamping plates 233 for lifting and turning over the tube sheet assembly, as shown in fig. 5a and 5 b.

Wherein, the installation direction of the lifting lug 22 is consistent with the stress direction thereof, so that the generation of torque can be avoided.

In a preferred embodiment, the lifting lugs 22 are subjected to a load that is higher than the total mass of the tube sheet assembly and tooling.

In order to ensure the safety during the lifting, transferring and turning over processes, the load borne by the lifting lugs 22 is higher than the total mass of the tube plate assembly and the tooling, and the lifting lugs 22 are not allowed to bear the load which is not in the same direction as the direction capable of bearing the load in use.

In a preferred embodiment, shackle 5 is provided on lifting eye 22, as shown in figure 3 b.

Through shackle 5, can realize quick connection and the dismantlement between lug and the crane.

In a preferred embodiment, the lifting lug 22 may be replaced by a lifting shaft 32, as shown in fig. 6a and 6 b.

The position of the lifting lug hole in the lifting lug 22 is fixed, when a user turns over, the rope and a product can rub against each other, the product has a corner structure, and when the friction force is large, the rope can be cut and broken.

Avoid cutting the rope for the lug hole, make the operation of standing up more nimble stable, the utility model discloses in, under the unchangeable circumstances of other structures of keeping hoist 2, can change lug 22 into hanger shaft 32.

Among them, the hanger constituted by the hanger shaft 32 is called a horizontal hanger, and the hanger constituted by the lifting lugs 22 is called a turning hanger.

In a preferred embodiment, a baffle 35 is provided on an end surface of the hanger shaft 32.

The utility model discloses in, baffle 35 on the terminal surface of ear hanger shaft 32 can play spacing effect, can avoid the friction between rope and product acute angle and lead to damaging the cracked risk of rope simultaneously, and the security is high.

In a preferred embodiment, at least two flat lifting slings and one turnover lifting sling are arranged on the tube plate when the operations of lifting, transferring and turning over the tube plate assembly are carried out.

The reason is that the three hoisting points can be hoisted simultaneously in the moving process, so that the stability in the moving process can be enhanced.

In a preferred embodiment, in order to ensure that the center of gravity of the tube plate assembly is stable after being lifted, two flat lifting slings are symmetrically arranged along the diameter direction of the tube plate 1 passing through a circular point, and a turn-over sling is arranged at the middle position of the two flat lifting slings along the circumferential direction.

In a preferred embodiment, the small lifting lug 22 is arranged on the upper clamping plate 231 and is used for lifting and transferring the tool.

In a preferred embodiment, the manner of connecting the small tab 21 to the card plate 23 is not particularly limited, and the small tab 21 may be attached to the card plate 23 by welding or may be integrally formed with the card plate 23.

In a preferred embodiment, the small lifting lug 21 is located at the centre of gravity of the spreader.

According to the utility model discloses, stand up the frock in order to lift by crane and install on ear seat 11, frock self need be hoisted through the crane, then docks with ear seat 11.

In order to ensure that the clamping plate 23 is in a horizontal state and is conveniently aligned with the lug seat 11 during the lifting and transferring of the tool, the installation position of the small lifting lug 21 needs to be defined, that is, the small lifting lug 21 needs to be installed on the gravity center of the lifting appliance 2.

In a preferred embodiment, the small lifting lug 21 is ensured to be positioned on the center of gravity of the spreader by adjusting the weight and mounting position of the small lifting lug 21.

According to the utility model discloses, cardboard 23 is the U-shaped cardboard, still is provided with lug 22 above the side cardboard 233, so cardboard 23's focus is not in the center department of U-shaped cardboard. The utility model discloses in, preferably drawing through inventor or other three-dimensional software, confirm the focus position.

In a preferred embodiment, the small lifting lug 21 is arranged on the upper end face of the upper clamping plate 231 on the side close to the near clamping plate, under the premise that the small lifting lug 21 is ensured to be positioned at the gravity center of the lifting appliance.

According to the utility model discloses, on engaging 2 blocks of hoist to otic placode 11, need control the crane davit for hoist 2 slowly is close to otic placode 11. Because the width of the lug seat 11 on the lug plate 11 is limited, the crane boom has less movable space and is easy to collide with the tube plate assembly in the clamping process.

The small lifting lug 21 is arranged on one side, close to the side clamping plate 233, of the upper end face of the upper clamping plate 231 as far as possible, and a larger moving space can be provided for the crane boom, so that the risk that the crane boom collides with the tube plate assembly to cause damage to the tube plate assembly is avoided.

In a preferred embodiment, the small lifting lug 21 is subjected to a load higher than the total mass of the lifting turn-over tool itself, including the mass of the spreader 2 and the fasteners 4.

In a preferred embodiment, the chucking holes 24 are provided in the upper and lower clamping plates 231, 232 to mate with the ear seat holes 111 in the tube sheet assembly.

Wherein, the arrangement of the clamping hole 24 is optional according to the position of the ear seat hole.

The clamping holes 24 are used for placing the fasteners 4, and the lifting and turning tool is installed on the tube plate 1 through the fasteners 4.

In a preferred embodiment, the fastener 4 includes a bolt 41 and a nut 42, as shown in fig. 4.

According to the utility model discloses, with cardboard 23 block on ear seat 11, hoist 2 is not firm with the installation of tube sheet subassembly, lifts by crane the in-process that shifts and stand up, and the tube sheet subassembly drops very easily. In order to strengthen the fastening effect, the hoisting and turning tool further comprises a fastener 4.

The utility model discloses do not do special regulation to the material of bolt 41 and nut 42, in a preferred embodiment, bolt 41 is made by the rod iron.

In a preferred embodiment, the nut 42 is a standard steel nut that fits the threads of the bolt 41.

In a preferred embodiment, the bolts 41 are stud bolts, one bolt 41 being provided with two nuts 42.

Wherein, adopt stud, can all carry out the thread tightening on the upper and lower two sides of cardboard 23, can increase the stability of lifting by crane the installation of standing up frock on the tube sheet subassembly.

In a preferred embodiment, the bolt 41 sequentially penetrates through the upper clamping plate 231, the ear seat hole 111 and the lower clamping plate 232, and the hoisting and turning tool is fixed with the tube plate assembly by tightening the nut 42.

In a preferred embodiment, the outer diameter of the bolt 41 should be smaller than the ear seat hole 111 of the ear seat 11.

According to the present invention, the size of the ear seat hole 111 on the ear seat 11 is determined, the fastening holes 24 on the fastening plate 231 and the lower fastening plate 232 are consistent with the size of the ear seat hole 111 on the ear seat 11, and for the insertion of the bolt 41, the bolt 41 with an outer diameter smaller than the ear seat hole 111 on the ear seat 11 should be selected.

In a preferred embodiment, the fastener 4 is wrapped with a protective layer.

According to the utility model discloses, the outer diameter of bolt 41 is less than ear seat hole 111 on the ear seat 11, not only can play and make things convenient for bolt 41 male effect, still can reserve operating space for the parcel of inoxidizing coating.

In a preferred embodiment, the protective layer is a cloth layer or a rubber layer, and may be made of a soft material such as cloth or rubber.

According to the utility model discloses, have soft materials such as cloth, rubber to the peripheral parcel of bolt, lifting by crane the in-process that stands up the frock and use, can avoid hard bumping hard, play the effect in protection ear seat hole 111. Meanwhile, the risk that the ropes are tightened to damage the surface of a product or the ropes are cut by acute angles of the product due to the change of the azimuth state in the traditional process of binding, hoisting and turning over by adopting the ropes is avoided.

In a preferred embodiment, the cloth includes, but is not limited to, common cloth that may be cotton cloth, canvas, non-woven fabric, acrylic, polyester, nylon, and the like.

In a preferred embodiment, in order to realize the fixed connection of the hoisting and turning tool and the ear seat 11, the amount of the bolt 41 is determined by the ear seat hole 111 on the ear seat 11.

The utility model relates to a hang and stand up frock has mainly utilized ear seat hole 111 on the ear seat 11, consequently, the quantity of bolt 41 is decided by ear seat hole 111 on the ear seat 11.

In addition, the quantity of the bolts 41 determines the connection stability of the hoisting and turning tool and the tube plate assembly. If the amount of the bolts 41 is too small, the pipe plate assembly is easy to fall off in the lifting process, otherwise, unnecessary workload is increased, and the working efficiency is affected.

In a preferred embodiment, the number of bolts 41 is 4, and the bolts are distributed in a rectangular shape on the ear mount 11.

The bolts 41 are installed in this way, so that the clamping plate 23 can be stressed uniformly in the horizontal direction, and the stability of the tube plate assembly in the moving process is improved.

According to the utility model discloses, on the other hand still provides a pipe plate subassembly and lifts by crane the method of standing up.

In a preferred embodiment, the method for lifting and turning over the tube plate and the tube plate assembly of the present invention, preferably using the above-mentioned device, comprises the following steps:

step 1, clamping a clamping plate 23 on an ear seat 11;

step 2, inserting the bolt 41 into the clamping hole 24, sleeving the nut 42 on the bolt 41, and screwing the nut 42 to fix the lifting and turning tool with the tube plate assembly;

step 3, repeating the step 1-2, and installing at least two horizontal lifting appliances and one turnover lifting appliance on the outer wall of the tube plate 1, as shown in fig. 3a and 3 b;

in order to ensure that the gravity center of the tube plate assembly is stable after the tube plate assembly is lifted, the two flat lifting slings are symmetrically arranged along the diameter direction of the tube plate 1 passing through the circle center, and the turning-over sling is arranged at the middle position of the two flat lifting slings along the circumferential direction.

Step 4, during translation, the crane simultaneously hangs the hanging shafts 32 on the two horizontal hanging hangers, and then the pipe plate assembly is moved;

in a preferred embodiment, during translation, the crane main lifting hook simultaneously lifts the lifting shafts 32 on two horizontal lifting slings, and simultaneously adopts an auxiliary lifting connection turning-over sling to assist balance, and then moves the pipe plate assembly;

the utility model discloses in, during the translation, the flat hoist that hangs uses in pairs, and two ropes are drawn forth to the main lifting hook that hangs of crane and are caught on two hanging shafts 32, and another is assisted and is hung and be connected with the lug 22 that stands up the hoist. Three hoists are hoisted simultaneously and can be strengthened the stationarity in the removal in-process.

And 5, when the user turns over, the crane lifts the lifting lugs 22 on the turning-over lifting appliance to continuously lift the upper part of the tube plate assembly until the tube plate assembly is vertical.

In a preferred embodiment, turning is not meant to be limited to 90 or 180 turns, but rather to include all forms of turning.

In a preferred embodiment, during turning, the left-right symmetrical flat lifting sling is hooked by a main lifting hook of the lifting crane to serve as an axis of the tube plate assembly to be turned, the turning lifting sling is hooked by the auxiliary lifting hook, and the tube plate assembly is turned by adjusting the height of the auxiliary lifting hook. In this process, one end of the tube sheet assembly may be placed on the wood pier platform if desired.

In a preferred embodiment, during turning, the auxiliary crane hook hangs the lifting eye 22 on the turning hanger, so that the upper part (turning hanger side) of the tube plate assembly is continuously lifted until the tube plate assembly becomes vertical. And (3) placing the lower end of the tube plate assembly in a vertical state on the batten platform, moving the crane and descending the auxiliary lifting hook until the tube plate assembly is turned over.

In a preferred embodiment, the auxiliary lifting hook of the crane is operated to slowly stand the tube plate assembly, then the lower end of the tube plate is placed on the batten platform, then the crane is moved, the height of the auxiliary lifting hook is reduced at the same time, the tube plate assembly is slowly laid flat, and 180-degree turning of the tube plate assembly is completed.

In a preferred embodiment, the lifting and turning tool can be applied to all links of tube plate assembly machining.

In a preferred embodiment, a crane is used for lifting the lifting and turning tool on the tube plate 1, the tube plate 1 is horizontally lifted to a machine tool factory for primary machining of the surface of the primary side of the tube plate 1, and allowance is removed. After machining of the primary side surface is completed, the tube plate 1 is turned over by 180 degrees by using the lifting and turning tool, primary machining of the secondary side surface is carried out, and allowance is removed.

The utility model discloses in tube sheet 1 indicates just to the original tube sheet that the factory has not carried out processing yet, in order to satisfy the needs of later stage processing, guarantees that tube sheet 1 that final processing goes out can satisfy the requirement of design size, and the machining allowance generally can all be reserved on original tube sheet all surfaces.

The utility model discloses in, in order to improve the corrosion resistance on the side surface that once inclines, the side surface that once inclines at tube sheet 1 carries out the build-up welding. The surfacing can not be conducted at high temperature, and the high temperature can cause the deformation of the tube plate. Therefore, before the tube plate is subjected to surfacing, the primary side surface and the secondary side surface of the tube plate 1 need to be machined, a part of the allowance of the tube plate 1 is removed, otherwise, the original allowance of the original tube plate is directly subjected to surfacing, and the size of the obtained tube plate is seriously inconsistent with the design value.

In the process of carrying out machining on the surface of the primary side and the secondary side of the tube plate 1, the utility model discloses an in-process that the frock was stood up in the utilization lifting is shifted and is stood up, because the utility model discloses a what the frock adopted is that block and threaded connection's mode is installed, compares with the dress welding lug, can not cause the injury to tube plate 1. Meanwhile, in the lifting process, the mode that three lifting points lift simultaneously is adopted, the safety of the tube plate 1 in the transferring and turning-over processes can be ensured, and the situation that the tube plate 1 collides or falls off due to shaking can not occur.

In a preferred embodiment, after the primary side surfacing of the tube plate 1 is completed, the hoisting and turning tool on the tube plate 1 is hoisted by a crane, the tube plate 1 is taken down from the welding positioner, the tube plate is horizontally hoisted on a machine tool to perform primary machining on the primary side surfacing layer, the surfacing surface is polished smooth, and after the primary side surfacing layer is qualified in flaw detection, the primary side surfacing layer is horizontally hoisted in a heat treatment furnace to perform heat treatment.

Bind with the rope and compare, adopt the utility model discloses a lift by crane and stand up frock and lift by crane and stand up, the operation is simpler, and a time installation just can be used at whole in-process. When the rope is used for binding, binding and unbinding are carried out once every time the rope is lifted, so that the operation is inconvenient, and the danger of falling is also existed.

In a preferred embodiment, after the primary-side cylinder 7 is connected with the primary side of the tube plate 1 by a gusset plate, the lifting and turning tool on the tube plate 1 is lifted by a crane, the tube plate 1 assembled with the primary-side cylinder 7 is turned over by 180 °, and then the lower cylinder III6 is connected with the secondary side of the tube plate 1 by a gusset plate. And then, hoisting the hoisting and turning-over tool on the tube plate 1 by using a crane, turning the tube plate assembly by 90 degrees, changing the vertical type to the horizontal type, horizontally hoisting the tube plate assembly to an operation platform for girth welding, hoisting the hoisting and turning-over tool on the tube plate 1 by using a crane in the girth welding process, gradually turning over the tube plate assembly, and completing the butt welding of the barrel.

In-process at the barrel equipment, adopt the utility model discloses a hoist and stand up frock can realize the nimble upset of tube sheet subassembly, not only can ensure that the tube sheet subassembly can carry out standing up of safety and stability, can also reduce the operation degree of difficulty in the assembling process.

The utility model discloses a tube sheet subassembly lifts by crane turning-over device has realized the tube sheet subassembly effectively stable lifts by crane, shifts, stands up the operation such as, not only can install at any time as required and dismantle, need not weld with the product moreover, does not relate to the welding reality and detect a flaw the problem, just even can use after final heat treatment, and the security is good, and assembly, dismantlement convenience, the flexibility is high, and the commonality is strong.

In the description of the present invention, it should be noted that the terms "upper", "lower", "inner", "outer", "front", "rear", and the like indicate the position or positional relationship based on the operation state of the present invention, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a specific position, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," "third," and "fourth" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

The present invention has been described above in connection with preferred embodiments, which are merely exemplary and illustrative. On this basis, can be right the utility model discloses carry out multiple replacement and improvement, these all fall into the utility model discloses a protection scope.

Claims (10)

1. A tube plate assembly lifting and turning tool comprises a tube plate (1), and is characterized in that an ear seat (11) is arranged on the outer wall of the tube plate (1), and an ear seat hole (111) is formed in the ear seat (11);

the tool comprises a lifting appliance (2) and a fastener (4);

the lifting appliance (2) comprises a small lifting lug (21), a clamping plate (23), a clamping hole (24) and a lifting lug (22) or a lifting shaft (32);

the tool is clamped on the lug seat (11) through the clamping plate (23), and the fastener (4) connects the lifting appliance (2) and the tube plate assembly through the lug seat hole (111) and the clamping hole (24).

2. The hoisting and turning tool of claim 1, wherein the tube plate assembly further comprises a primary side cylinder (7), a lower cylinder III (6) and an internal support block (8);

the primary side cylinder (7) is installed on the primary side of the tube plate (1), the lower cylinder III (6) is installed on the secondary side of the tube plate (1), and the supporting block (8) is arranged on the tube plate (1) and used for fixing the primary side cylinder (7) and the lower cylinder III (6) when the cylinders are installed.

3. The hoisting and turning tool according to claim 1, wherein the number of the ear seats (11) is at least 3, 6 ear seat holes (111) are formed in the ear seats (11), the diameter of each ear seat hole (111) is 66cm, and the ear seat holes (111) are arranged on the ear seats (11) in a 3 x 2 manner.

4. The hoisting and turning tool of claim 1, wherein the small lifting lug (21), the lifting lug (22) or the lifting shaft (32) is integrally formed with the clamping plate (23); the lifting appliance composed of the lifting lugs (22) is a turning-over lifting appliance, and the lifting appliance composed of the lifting shafts (32) is a flat lifting appliance.

5. The hoisting and turning tool as claimed in claim 1, wherein the clamping plate (23) is a U-shaped clamping plate, and is composed of an upper clamping plate (231), a lower clamping plate (232) and side clamping plates (233);

the small lifting lug (21) is arranged on the upper clamping plate (231) and used for lifting and transferring the tool;

wherein the small lifting lug (21) is positioned at the gravity center of the lifting appliance (2);

the lifting lugs (22) or the lifting shafts (32) are arranged on the side clamping plates (233) and are used for lifting, transferring and turning over the tube plate assembly;

wherein, the lifting lug (22) is provided with a shackle (5), and the end surface of the lifting shaft (32) is provided with a baffle plate (35);

the clamping holes (24) are formed in the upper clamping plate (231) and the lower clamping plate (232) and are matched with the lug seat holes (111) formed in the lug seat (11).

6. The hoisting and turning tool as claimed in claim 5, wherein the height of the side clamping plate (233) is at least 1-2mm higher than the thickness of the ear seat (11), and the clamping plate thicknesses of the upper clamping plate (231), the lower clamping plate (232) and the side clamping plate (233) are kept consistent.

7. The hoisting and turning tool according to claim 1, wherein the fastener (4) comprises a bolt (41) and a nut (42);

the bolts (41) are stud bolts, and one bolt (41) is provided with two nuts (42);

the outer diameter of the bolt (41) is smaller than that of an ear seat hole (111) on the ear seat (11);

the amount of the bolt (41) is determined by the number of the ear seat holes (111) on the ear seat (11).

8. The lifting and turning tool according to one of claims 1 to 7, wherein the clamping plate (23) is clamped on the lug seat (11), the bolt (41) sequentially penetrates through the upper clamping plate (231), the lug seat hole (111) and the lower clamping plate (232), and the lifting and turning tool and the tube plate assembly are fixed together by tightening the nut (42).

9. The hoisting and turning tool according to claim 1, wherein a protective layer is wrapped outside the fastener (4);

the protective layer is a cloth layer or a rubber layer.

10. The lifting and turning tool of claim 4, wherein at least two flat lifting slings and one turning sling are arranged on the tube plate when the tube plate assembly is lifted, transferred and turned.

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