CN219030396U

CN219030396U - Special tool for transporting, disassembling and hoisting NDC tube bundle tube plates

Info

Publication number: CN219030396U
Application number: CN202222571066.9U
Authority: CN
Inventors: 任文韬; 张美俊
Original assignee: Individual
Current assignee: Individual
Priority date: 2022-09-27
Filing date: 2022-09-27
Publication date: 2023-05-16
Anticipated expiration: 2032-09-27

Abstract

The utility model relates to the technical field of installation of natural ventilation direct air cooling (NDC) tube bundle tube plates of a coal-fired ultra-supercritical unit, in particular to a special tool for transporting, dismounting and lifting the NDC tube bundle tube plates, which comprises a first frame body and a second frame body which are oppositely arranged, wherein a first base is arranged at the bottom of the first frame body, a first vertical plate is fixedly connected to the upper surface of the first base, a first lifting lug is arranged on one side wall of the first vertical plate, a plurality of first shells are detachably connected to the other side wall of the first vertical plate, and first angle steel is fixedly connected to the two opposite side walls of the bottom of the first shells. When the novel NDC tube bundle tube plate is used, one end of the NDC tube bundle tube plate is clamped on the two first angle steels and the first fixing plate, the other end of the NDC tube bundle tube plate is arranged in a space between the second shell and the second base, and the bolts are used for fixing. The tube plates can be stacked in a layered and staggered mode, so that the structure is compact, space is saved, the transportation efficiency of the tube plates of the NDC tube bundles is improved, and the device has high practical value.

Description

Special tool for transporting, disassembling and hoisting NDC tube bundle tube plates

Technical Field

The utility model relates to the technical field of installation of natural ventilation direct air cooling (NDC) tube bundle tube plates of a coal-fired ultra-supercritical unit, in particular to a special tool for transportation, disassembly and lifting of the NDC tube bundle tube plates.

Background

The NDC system has 37 sets of cooling delta bundles, each set of cooling delta bundles is composed of 4 large bundles, each large bundle is composed of 5 tube sheets, so that the NDC system has 37×4×5=740 tube sheets. Each tube plate is 3t in weight, 11.5m in length and 2.6m in width and 0.2m in height, and conventionally, each tube plate is lifted onto a transport vehicle one by one to be stacked and placed, then transported, and lifted and unloaded after reaching a destination, so that repeated lifting, transportation and loading and unloading are needed, a large amount of mechanical benches and transportation time are needed to be consumed, fins of the tube plates are very fragile, and the tube plates cannot be repaired due to serious damage or permanent deformation caused by improper use of a placing mode or a transport tool in the links of lifting, transportation and the like, so that normal use is influenced, troubles are brought to a demand side, and a tool with more convenience in transportation, disassembly and lifting is needed to be considered.

Disclosure of Invention

The utility model aims to overcome the defects of the conditions, and provides a special tool for transporting, disassembling and lifting an NDC tube bundle tube plate, which can be used for more conveniently and rapidly transporting, disassembling and lifting, and is time-saving and labor-saving.

The special tool for transporting, disassembling and hoisting the NDC tube bundle tube plates comprises a first frame body and a second frame body which are arranged in opposite directions, wherein a first base is arranged at the bottom of the first frame body, the upper surface of the first base is fixedly connected with a first vertical plate, one side wall of the first vertical plate is provided with a first lifting lug, the other side wall is detachably connected with a plurality of first shells, and the opposite side walls of the bottom of the first shells are fixedly connected with first angle steel; the second lifting lug comprises a second base, a second vertical plate, a second lifting lug, a second shell and second angle steel, wherein the element structure of the second frame body is consistent with that of the first frame body; and a plurality of NDC tube bundle tube plates are arranged between the first frame body and the second frame body.

Further, a first space for placing the tube plate of the NDC tube bundle is arranged between the two first shells, and a second space for placing the tube plate of the NDC tube bundle is arranged between the two second shells; the first shell and the second space are arranged in opposite directions, and the second shell and the first space are arranged in opposite directions.

Further, the bottom of the first angle steel and the top of the second shell are arranged on the same horizontal line, and the bottom of the second angle steel and the top of the first shell are arranged on the same horizontal line.

Further, one end of the NDC tube bundle tube plate is detachably connected to the first angle steel, and the other end of the NDC tube bundle tube plate is detachably connected to the top of the second shell or the first base.

Further, one end of the NDC tube bundle tube plate is detachably connected to the top of the first shell, and the other end of the NDC tube bundle tube plate is detachably connected to the second angle steel.

Further, the first shell comprises a top wall, a bottom wall and two side walls, one side wall of the first shell is detachably connected with the first vertical plate, and a first fixing plate is arranged between the two first angle steels; the second shell is structurally arranged with the first shell.

Further, a plurality of NDC tube bundle tube plates are stacked between the first frame body and the second frame body, and an upper NDC tube bundle tube plate and a lower NDC tube bundle tube plate are separated into a transverse gap by the first angle steel or the second angle steel.

When the novel NDC tube bundle tube plate fixing device is used, firstly, the distance between the first frame body and the second frame body is positioned according to the length of the NDC tube bundle tube plate, the first shell at the bottom end is fixed to the first vertical plate through the first bolt, the first shell at the bottom end connected with the second vertical plate is fixed through the fourth bolt, then the NDC tube bundle tube plate is lightly placed in the space of the lowest layer, one end of the NDC tube bundle tube plate is clamped on the two first angle steels and the first fixing plate, and the NDC tube bundle tube plate is fixed through the third bolt. The other end is arranged in the space between the second shell and the second base, and is fixed by a fifth bolt, so that the installation of the first layer of NDC tube bundle tube plate at the bottom end is finished. When the second layer NDC tube bundle is fixed, one end of the second layer NDC tube bundle is arranged between the two first shells and is fixed by the second bolts, the other end of the second layer NDC tube bundle is arranged on the second group of second angle steels and the second fixing plates above the bottom end of the second layer NDC tube bundle and is fixed by the sixth bolts. And the other six NDC tube bundle tube plates are fixed upwards by referring to the first NDC tube bundle tube plates and the second NDC tube bundle tube plates at the bottom. And when in lifting transportation, the lifting device is respectively connected with the two first lifting lugs and the two second lifting lugs to lift and transport upwards. When the NDC tube bundle tube plate is disassembled, layering disassembly is carried out from the uppermost layer to the lowermost layer, the first bolt between the first shell and the first vertical plate on the uppermost layer, the second bolt on the top wall of the first shell and the sixth bolt on the second fixing plate on the top end are disassembled, then the first tube plate on the top end is gently hung, and the seven tube plates of the disassembly part are disassembled in the same disassembly mode by analogy.

Compared with the prior art, the utility model has the beneficial effects that:

(1) because the first shell and the second shell are arranged, the first shell and the second shell are arranged in a staggered manner, one end of the top first layer of tube plates is arranged on the upper part of the first shell, and the second layer of tube plates are arranged on the side wall of the first shell, so that layered staggered stacking of tube plates can be realized, the integral structure is compact, the space is saved, and the transportation efficiency of the tube plates of the NDC tube bundles is improved; meanwhile, a certain gap can be formed between each two layers, so that the tube plate fins are prevented from being pressed mutually to deform, and the tube plate fins of the tube bundle are effectively prevented from being damaged in the transportation and lifting processes.

(2) Because the NDC tube bundle tube plates are fastened by bolts, each layer of tube plates can be firmly inlaid, and the condition that the tube plates are loose and scattered in the transportation process can be avoided.

(3) Due to the arrangement of the first lifting lug and the second lifting lug, when the NDC tube bundle tube plate is assembled, only lifting is needed at the lifting lug, and the lifting is convenient and quick.

(4) Because the special tool for transporting, disassembling and hoisting the NDC tube bundle tube plates in the embodiment is a rigid integral structure made of section steel and steel plates, the NDC tube bundle tube plates are compact, and can be repeatedly recycled after being processed and manufactured.

(5) The special tool for the transportation, disassembly and assembly of the NDC tube bundle tube plates, and the lifting of the NDC tube bundle tube plates is firm in fixation and convenient in disassembly and lifting during the whole lifting transportation, ensures the installation safety and stability of the natural ventilation direct air cooling system of the coal-fired ultra-supercritical unit and the running quality of the subsequent unit in the construction process, and has high practical value.

Drawings

The accompanying drawings are included to provide a further understanding of the utility model and are incorporated in and constitute a part of this specification, illustrate the utility model and together with the embodiments of the utility model, serve to explain the utility model. In the drawings:

fig. 1 is a schematic diagram of the overall structure of the NDC tube bundle tube sheet transport, disassembly and lifting tool in this embodiment.

Fig. 2 is a schematic diagram of a first rack of a tool special for transporting, disassembling and lifting NDC tube bundle tube plates in this embodiment.

Fig. 3 is a schematic view of a first shell of a tool special for transporting, disassembling and lifting NDC tube bundle tube plates in the present embodiment.

Fig. 4 is a schematic diagram of a second frame body of a special tool for transporting, disassembling and lifting NDC tube bundle tube plates in the present embodiment.

Fig. 5 is a partial enlarged view at a in fig. 4.

In the figure: 1-first support body, 101-first base, 102-first riser, 103-first lug, 104-first casing, 105-first angle steel, 106-first space, 2-second support body, 201-second base, 202-second riser, 203-second lug, 204-second casing, 205-second angle steel, 206-second space, 3-first fixed plate, 4-second fixed plate, 5-first bolt, 6-second bolt, 7-third bolt, 8-fourth bolt, 9-fifth bolt, 10-sixth bolt.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

Specific examples:

a special tool for conveying, disassembling and hoisting NDC tube bundle tube plates is shown in fig. 1, and comprises a first frame body 1 and a second frame body 2 which are arranged in opposite directions, wherein a plurality of NDC tube bundle tube plates are stacked between the first frame body 1 and the second frame body 2.

As shown in fig. 2, the first frame 1 includes a first base 101, and since the H-section steel has the advantages of strong bending resistance and light weight, the first base 101 is preferably made of the H-section steel, and two flanges of the H-section steel are disposed up and down. The upper surface of the base 101 is fixedly welded with two first vertical plates 102, the first vertical plates 102 are strip-shaped plate bodies and are perpendicular to the flanges of the H-shaped steel, and the two first vertical plates 102 are respectively arranged at positions, close to two ends, of the first base 101. Four rows of holes are distributed on the vertical central line of the plate body of the first vertical plate 102 in an array mode, two holes are formed in each row of holes, a first bolt 5 is arranged at each hole, a first lifting lug 103 is fixedly welded to the middle upper portion of the first vertical plate 102, the first lifting lug 103 is a block-shaped plate body, and through holes are formed in the surface of the first lifting lug 103 to serve as a lifting connection portion. The trompil department on the first riser 102 is by first bolt 5 connection four first casings 104, and first casing 104 is the rectangular casing that roof, diapire and two lateral walls enclose the synthetic, and rectangular casing's inside welding rectangle fixed plate is in order to increase first casing 104 stability, and the fixed plate is fit with rectangular casing and the four sides of fixed plate weld to rectangular casing's four walls respectively. The second bolt 6 is all dismantled to roof and diapire of first casing 104, and a first angle steel 105 is fixed welding respectively to the both sides of first casing 104 diapire, welds first fixed plate 3 between two first angle steels 105, and referring to fig. 3, the middle part of first fixed plate 3 sets up third bolt 7, and third bolt 7 is connected with NDC tube bank tube sheet.

As shown in fig. 4, the component parts of the second frame body 2 refer to the first frame body 1, the second frame body 2 includes a second base 201, a second vertical plate 202, a second lifting lug 203, a second shell 204 and a second angle steel 205, wherein the second vertical plate 202 and the second shell are connected and fixed by a fourth bolt 8, a top wall and a bottom wall of the second shell 204 are both detachably connected with a fifth bolt 9, a second fixing plate 4 is welded between two second angle steels 105, and a sixth bolt 10 is arranged in the middle of the second fixing plate 4, as shown in fig. 5 in detail. The second shells 204 are staggered with the first shells 104 in space, please refer to fig. 2 and fig. 4, that is, a first space 106 for placing the NDC tube bundle tube plate is provided between the two first shells 104, and a second space 206 for placing the NDC tube bundle tube plate is provided between the two second shells 204; the first housing 104 is disposed opposite to the second space 206, and the second housing 204 is disposed opposite to the first space 106. One end of the first NDC tube bundle tube plate at the lowest end is fixedly connected by a first third bolt 7 at the bottom end, and the other end is fixedly connected by a fifth bolt 9 at the bottom wall of a first second shell 204 at the bottom end. So that the NDC tube bundle tube plates are arranged between the first frame body 1 and the second frame body 2 in a staggered way, and a gap is reserved between the upper NDC tube bundle tube plate and the lower NDC tube bundle tube plate.

When the device is used, the distance between the first frame body 1 and the second frame body 2 is positioned according to the length of the NDC tube bundle tube plate, the first shell 104 at the bottom end is fixed to the first vertical plate 102 by the first bolt 5, the first second shell 204 at the bottom end connected with the second vertical plate 202 is fixed by the fourth bolt 8, then the NDC tube bundle tube plate is lightly placed in the space at the lowest layer, one end of the NDC tube bundle tube plate is clamped on the two first angle steels 105 and the first fixing plate 3, and the NDC tube bundle tube plate is fixed by the third bolt 7. The other end is arranged in the space between the second shell 204 and the second base 201, and is fixed by a fifth bolt 9, so that the first layer of NDC tube bundle tube plate at the bottom end is installed. When the NDC tube bundles of the second layer are fixed, one end of the NDC tube bundles is arranged in the first space 106 between the two first shells 104, the NDC tube bundles are fixed by the second bolts 6, and the other end of the NDC tube bundles are arranged on the second group of second angle steels 205 and the second fixing plates 4 above the bottom end, and are fixed by the sixth bolts 10. And the other six NDC tube bundle tube plates are fixed upwards by referring to the first NDC tube bundle tube plates and the second NDC tube bundle tube plates at the bottom. When in lifting transportation, the lifting device is respectively connected with the two first lifting lugs 103 and the two second lifting lugs 203 to lift and transport upwards. When the NDC tube bundle tube plate is disassembled, the layered disassembly is performed from the uppermost layer to the lowermost layer, first, the first bolts 5 between the first shell 104 and the first vertical plate 102 on the uppermost layer, the second bolts 6 on the top wall of the first shell 104 and the sixth bolts 10 on the second fixing plate 4 on the top end are disassembled, then the first tube plate on the top end is gently lifted out, and the like, so that seven tube plates of the disassembly part are disassembled in the same disassembly mode.

Because the first shell 104 and the second shell 204 are arranged, the first shell 104 and the second shell 204 are arranged in a staggered way, one end of the first layer of tube plates at the top is arranged on the upper part of the first shell 104, and the second layer of tube plates are arranged on the side wall of the first shell 104, so that layered staggered stacking of tube plates can be realized, the integral structure is compact, the space is saved, and the transportation efficiency of the tube plates of the NDC tube bundles is improved; meanwhile, a certain gap can be formed between each two layers, so that the tube plate fins are prevented from being pressed mutually to deform, and the tube plate fins of the tube bundle are effectively prevented from being damaged in the transportation and lifting processes. Because the NDC tube bundle tube plates are fastened by bolts, each layer of tube plates can be firmly inlaid, and the condition that the tube plates are loose and scattered in the transportation process can be avoided. Due to the arrangement of the first lifting lug 103 and the second lifting lug 203, when the tube plate of the NDC tube bundle is assembled, only lifting is needed at the lifting lug, and the lifting is convenient and quick. Because the special tool for transporting, disassembling and hoisting the NDC tube bundle tube plates in the embodiment is a rigid integral structure made of section steel and steel plates, the NDC tube bundle tube plates are compact, and can be repeatedly recycled after being processed and manufactured. In sum, the special tool is firmly fixed, convenient to disassemble, assemble and hoist, ensures the installation safety and stability of the natural ventilation direct air cooling system of the coal-fired ultra-supercritical unit and the operation quality of the subsequent units in the process, and has high practical value.

In the description of the present utility model, it should be understood that the terms "longitudinal," "transverse," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like indicate or are based on the orientation or positional relationship shown in the drawings, merely to facilitate description of the present utility model, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus should not be construed as limiting the present utility model.

Finally, it should be noted that: the foregoing description is only a preferred embodiment of the present utility model, and the present utility model is not limited thereto, but it is to be understood that modifications and equivalents of some of the technical features described in the foregoing embodiments may be made by those skilled in the art, although the present utility model has been described in detail with reference to the foregoing embodiments. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present utility model should be included in the protection scope of the present utility model.

Claims

1. An NDC tube bank tube sheet transportation, dismouting, special instrument of lifting by crane, its characterized in that:

the novel lifting frame comprises a first frame body (1) and a second frame body (2) which are arranged in opposite directions, wherein a first base (101) is arranged at the bottom of the first frame body (1), a first vertical plate (102) is fixedly connected to the upper surface of the first base (101), a first lifting lug (103) is arranged on one side wall of the first vertical plate (102), a plurality of first shells (104) are detachably connected to the other side wall of the first vertical plate, and first angle steels (105) are fixedly connected to two opposite side walls of the bottom of each first shell (104);

the second frame body (2) comprises a second base (201), a second vertical plate (202), a second lifting lug (203), a second shell (204) and second angle steel (205), and the component structure of the second frame body (2) is consistent with that of the first frame body (1);

a plurality of NDC tube bundle tube plates are arranged between the first frame body (1) and the second frame body (2).

2. The NDC tube bundle tube sheet transport, disassembly and lifting special tool as set forth in claim 1, wherein:

a first space (106) for placing the tube plate of the NDC tube bundle is arranged between the two first shells (104), and a second space (206) for placing the tube plate of the NDC tube bundle is arranged between the two second shells (204); the first housing (104) is disposed opposite to the second space (206), and the second housing (204) is disposed opposite to the first space (106).

3. The NDC tube bundle tube sheet transport, disassembly and lifting special tool according to claim 2, wherein:

the bottom of the first angle steel (105) and the top of the second shell (204) are arranged on the same horizontal line, and the bottom of the second angle steel (205) and the top of the first shell (104) are arranged on the same horizontal line.

4. The NDC tube bundle tube sheet transport, disassembly and lifting special tool according to claim 3, wherein:

one end of the NDC tube bundle tube plate is detachably connected to the first angle steel (105), and the other end of the NDC tube bundle tube plate is detachably connected to the top of the second shell (204).

5. The NDC tube bundle tube sheet transport, disassembly and lifting special tool according to claim 3, wherein:

one end of the NDC tube bundle tube plate is detachably connected to the top of the first shell (104), and the other end of the NDC tube bundle tube plate is detachably connected to the second angle steel (205).

6. The NDC tube bundle tube sheet transport, disassembly and lifting special tool according to claim 4 or 5, wherein:

the first shell (104) comprises a top wall, a bottom wall and two side walls, one side wall of the first shell is detachably connected with the first vertical plate (102), and a first fixing plate (3) is arranged between two first angle steels (105); the second housing (204) is configured to conform to the first housing (104).

7. The NDC tube bundle tube sheet transport, disassembly and lifting special tool as set forth in claim 6, wherein:

the plurality of NDC tube bundle tube plates are stacked between the first frame body (1) and the second frame body (2), and an upper NDC tube bundle tube plate and a lower NDC tube bundle tube plate are separated into a transverse gap by the first angle steel (105) or the second angle steel (205).