CN112794204B - Steam generator tube plate turnover device and method - Google Patents
Steam generator tube plate turnover device and method Download PDFInfo
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- CN112794204B CN112794204B CN202110076482.9A CN202110076482A CN112794204B CN 112794204 B CN112794204 B CN 112794204B CN 202110076482 A CN202110076482 A CN 202110076482A CN 112794204 B CN112794204 B CN 112794204B
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- plate
- fixing
- ring
- corner
- tube plate
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66C—CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
- B66C1/00—Load-engaging elements or devices attached to lifting or lowering gear of cranes or adapted for connection therewith for transmitting lifting forces to articles or groups of articles
- B66C1/10—Load-engaging elements or devices attached to lifting or lowering gear of cranes or adapted for connection therewith for transmitting lifting forces to articles or groups of articles by mechanical means
- B66C1/62—Load-engaging elements or devices attached to lifting or lowering gear of cranes or adapted for connection therewith for transmitting lifting forces to articles or groups of articles by mechanical means comprising article-engaging members of a shape complementary to that of the articles to be handled
- B66C1/66—Load-engaging elements or devices attached to lifting or lowering gear of cranes or adapted for connection therewith for transmitting lifting forces to articles or groups of articles by mechanical means comprising article-engaging members of a shape complementary to that of the articles to be handled for engaging holes, recesses, or abutments on articles specially provided for facilitating handling thereof
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66C—CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
- B66C13/00—Other constructional features or details
- B66C13/04—Auxiliary devices for controlling movements of suspended loads, or preventing cable slack
- B66C13/08—Auxiliary devices for controlling movements of suspended loads, or preventing cable slack for depositing loads in desired attitudes or positions
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Automatic Assembly (AREA)
Abstract
The invention relates to a steam generator tube plate turnover device and a method, wherein the turnover device comprises a fixing ring (1) and a pressing plate (2); the fixing ring (1) is of an arc structure, and fixing plates (11) are arranged at two ends of the arc; the fixed ring (1) and the tube plate (3) are fixedly combined into a whole by the pressing plate (2). The turnover device provided by the invention has the advantages of ingenious design, strong practicability, simple manufacture and low cost, can be effectively mechanically connected with a product to realize assembly and positioning, and solves the problem that the body is lifted and transported without a tube plate with a directly utilized lifting point.
Description
Technical Field
The invention relates to the field of machining, in particular to a steam generator tube plate turnover device and method.
Background
Steam generators are mechanical devices that use the heat energy of a fuel or other energy source to heat water into hot water or steam.
The tube plate is an important component of the steam generator, holes which are slightly larger than the outer diameter of the tubes are drilled on a round steel plate, and the round steel plate is of a round cake-shaped structure which plays a role in fixing the tubes and sealing media in the heat exchanger. A fitting which functions by fixing a pipe by piercing and welding. The tube plate is of a round cake-shaped structure, the weight is as small as several tons and as large as dozens of tons, the procedures are various in the manufacturing process, and the procedures such as surfacing, machining and the like are involved.
In the prior art, when each process of manufacturing the tube plate is executed, the operations of lifting, transferring and turning over the tube plate are generally realized by welding lifting lugs on the tube plate, but the lifting lugs on the product cannot be welded under the condition that some tube plates are special in material or the operation space is limited when flaw detection is executed on the outer wall of the tube plate, so that the lifting and transferring of the tube plate are very difficult. Therefore, it is necessary to design a turning device which is convenient for the tube plate to transfer and turn over.
Due to the reasons, the invention provides the steam generator tube plate turnover device and the steam generator tube plate turnover method, so that the steam generator tube plate can be turned over and transported under the condition that the operation space is limited and the lifting lugs cannot be welded.
Disclosure of Invention
In order to overcome the problems, the inventor of the invention carries out intensive research and designs the steam generator tube plate turnover device and the method. The device can be effectively connected with a product mechanically to realize assembly positioning, and the problem that the tube plate without a directly usable lifting point on the body is lifted and transported is solved, so that the invention is completed.
Particularly, one of the purposes of the invention is to provide a steam generator tube plate turnover device which comprises a fixing ring and a pressing plate;
the fixing ring is of an arc structure, and a fixing plate is arranged at the opening end of the arc;
the fixed ring and the tube plate are fixedly connected into a whole by the pressing plate.
The fixing rings are multiple and spliced into a circular ring, and the circular ring is nested on the outer side of the tube plate;
preferably, the number of the fixing rings is 2, and the outer diameter of the tube plate is equal to the inner diameter of the circular ring.
The fixing plate is vertically arranged on the outer side wall of the fixing ring, and a rib plate, preferably a reinforcing rib plate, is arranged on one side of the fixing plate;
the rib plates are positioned on a common vertical surface of the outer side walls of the fixing plate and the fixing ring.
The fixing plate is also provided with a plurality of fixing plate through holes which are preferably uniformly arranged;
preferably, the number of the rib plates is two, the number of the fixing plate through holes is three, and the rib plates and the fixing plate through holes are arranged at intervals.
A plurality of groups of supporting platforms are arranged on the fixed ring, preferably, each group of supporting platforms comprises two supporting platforms which are axially and symmetrically arranged,
the two axially symmetrical support tables are respectively arranged at the upper end and the lower end of the outer side wall of the fixed ring and used for supporting the pressing plate;
preferably, a support table through hole is formed in the support table;
a plurality of lifting lugs are further arranged in the center of the outer side wall of the fixing ring 1, preferably, the number of the lifting lugs is 8, and preferably, the lifting lugs are arranged on the outer side wall of the fixing ring at equal intervals;
more preferably, rib plates are vertically arranged on two sides of the lifting lug.
The pressing plate (2) is of a folding type and comprises a first vertical part, a first horizontal part, a second vertical part and a second horizontal part, and the four parts are unified and integral;
and a spigot is arranged at the free end of the first vertical part and is abutted against the outer side of the support table.
A pressing plate through hole is formed in the first horizontal part;
preferably, the number and the aperture of the pressure plate through holes are the same as those of the support plate through holes.
The second vertical part comprises a first corner and a second corner, and the first corner and the second corner are both provided as inclined planes;
preferably, the first corner and the second corner slope are set at different angles.
The invention also aims to provide a turning-over method of the steam generator tube plate turning-over device, which comprises the following steps:
and 4, disassembling the device.
The invention has the advantages that:
(1) According to the steam generator tube plate turning device provided by the invention, the tube plate can be turned and transferred, and the turning device is ingenious in design, strong in practicability, convenient to operate, high in working efficiency, simple to manufacture and low in cost.
(2) According to the steam generator tube plate turnover device provided by the invention, the tube plate can be turned over under the conditions that the operation space is limited and the lifting lugs cannot be welded.
(3) The method for turning over the tube plate of the steam generator provided by the invention is simple to assemble, easy to operate, low in cost and strong in practicability.
Drawings
FIG. 1 is a schematic view showing the overall structure of a steam generator tube plate turnover device according to a preferred embodiment of the invention;
fig. 2 is a schematic view showing a structure of a pressing plate of a steam generator tube plate turnover device according to a preferred embodiment of the invention.
The reference numbers illustrate:
1-fixed ring
11-fixed plate
12-Rib plate
13-fixed plate through hole
14-support table
15-lifting lug
2-pressing plate
21-spigot
22-platen through hole
23-first corner
24-second corner
3-tube plate
Detailed Description
The invention is explained in more detail below with reference to the figures 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.
According to the invention, the turnover device for the tube plate of the steam generator comprises a fixing ring 1 and a pressing plate 2, as shown in figure 1.
The fixing ring 1 is of an arc structure, and a fixing plate 11 is arranged at the opening end of the arc;
the fixed ring 1 and the tube plate 3 are fixedly connected into a whole by the pressing plate 2.
The fixing rings 1 are multiple, the fixing rings 1 are spliced into a circular ring, and the circular ring is nested outside the tube plate 3;
preferably, the number of the fixing rings 1 is 2, and the outer diameter of the tube plate 3 is equal to the inner diameter of the circular ring;
according to a preferred embodiment of the present invention, the fixing plate 11 and the fixing ring 1 are connected in a non-detachable manner, and the non-detachable connection has the advantages of good connection integrity and light structure. Preferably, the fixing plate 11 and the fixing ring 1 are connected by bonding and welding; more preferably a welded connection, in particular a seal weld.
Because the tube sheet is usually of large tonnage, the device needs to be firm enough in the overturning process so as to avoid the situation of fracture, so that the welding is particularly important at the position, and compared with other modes, the welding has the highest firmness and stronger durability.
According to a preferred embodiment of the present invention, the whole circumference of the ring after splicing is slightly smaller than the circumference of the tube plate 3, and the ring after splicing should ensure that there is a certain gap on the opposite side of the fixing ring 11, and ensure that the fixing ring 1 tightly wraps the outer wall of the tube plate.
According to the invention, the fixing plate can be made of high-quality carbon steel or high-strength carbon steel, and the fixing plate has good ductility. The fixing plate 11 is vertically arranged on the outer side wall of the fixing ring 1, and a rib plate 12, preferably a reinforcing rib plate, is further arranged on one side of the fixing plate 11 facing the outer side wall.
The rib plates 12 are located on a common vertical plane of the outer side walls of the fixing plate 11 and the fixing ring 1 and used for enhancing the connection strength of the fixing plate 11 and the fixing ring 1.
Because the connection surface of the structural member is limited in bearing load, the strength and the rigidity of the product can be effectively enhanced by adding the rib plate 12 on the common vertical surface of the two combined bodies, and preferably, the rib plate 12 is connected with the fixing plate 11 and the fixing ring 1 in a non-detachable manner, and more preferably, in a welding manner.
A plurality of fixing plate through holes 13 are uniformly formed in the fixing plate 11;
according to a preferred embodiment of the present invention, there are two rib plates 12, three fixing plate through holes 13, and the rib plates 12 and the fixing plate through holes 13 are arranged at intervals.
The fixing plate through holes 13 are used for connecting two adjacent fixing plates 11, and are connected through fixing members, preferably bolts and nuts, so that the two adjacent fixing plates 11 are close to each other, and the fixing ring 1 is tightly attached to the periphery of the tube plate 3.
More preferably, the bolts are stud bolts, one bolt mating two nuts.
According to a preferred embodiment of the present invention, a sealing pad is disposed on the inner side wall of the fixing ring 1 to prevent the fixing ring 1 from colliding and wearing when contacting the tube sheet 3. The outer edge of sealing gasket slightly is greater than the outer edge of solid fixed ring 1 inside wall for solid fixed ring 1 is fixed back with tube sheet 3, when increasing contact surface frictional force, reduces solid fixed ring 1 outer edge edges and corners to tube sheet 3's damage.
In a preferred embodiment, the sealing gasket is a rubber gasket, and has certain corrosion resistance and wear resistance on the basis of keeping certain elastic deformation capacity, so that the sealing gasket can be repeatedly applied for a long time.
A plurality of groups of supporting platforms 14 are further arranged on the outer side wall of the fixing ring 1, and each group of supporting platforms 14 comprises two supporting platforms 14 which are axially symmetrically arranged;
two axially symmetrical support tables 14 are respectively arranged at the upper end and the lower end of the outer side wall of the fixed ring 1 and used for supporting the pressing plate 2;
preferably, a through hole is provided on the support platform 14.
According to this application, the upper and lower both ends of lateral wall are close to the both ends of lower limb for solid fixed ring 1 perpendicular to cambered surface direction, do not specifically prescribe a limit to upper and lower, and both ends can freely change.
The support platform 14 cooperates with the pressure plate 2 and functions to provide a support point for the pressure plate 2 and a force point through which the pressure plate 2 and the support platform 14 can be fastened together.
A plurality of lifting lugs 15 are further arranged in the center of the outer side wall of the fixing ring 1, preferably, 8 lifting lugs 15 are arranged on the outer side wall of the fixing ring 1 at equal intervals;
according to a preferred embodiment of the invention, the lifting lugs 15 are arranged at the central positions of the outer side walls of the fixing rings 1, so that the tube plates are stressed symmetrically in the lifting process and cannot incline or turn on one side, and the difficulty of the lifting process is reduced.
According to a preferred embodiment of the present invention, the lifting lugs 15 and the fixing ring 1 are connected in a non-detachable manner, and the non-detachable connection has the advantages of good connection integrity, high strength, and the like. Preferably, the lifting lug 15 is connected with the fixing ring 1 by welding.
The pressing plate 2 is of a folding type and comprises a first vertical part, a first horizontal part, a second vertical part and a second horizontal part, and the four parts are a unified and integral whole body as shown in fig. 2.
Preferably, the platen 2 has the same width as the support table 14.
One end of the first vertical part is a connecting end, and the other end of the first vertical part is a free end;
the two ends of the first horizontal part are connecting ends, one end of the first horizontal part is connected with the first vertical part, and the other end of the first horizontal part is connected with the second vertical part;
both ends of the second vertical part are also connecting ends, one end of the second vertical part is connected with the first horizontal part, and the other end of the second vertical part is connected with the second horizontal part;
one end of the second horizontal part is a connecting end, and the other end of the second horizontal part is a free end, and the connecting end is connected with the second vertical part.
According to the invention, the connecting end is the end that is immediately adjacent to the adjacent part and the free end is the end that is not immediately adjacent to the other part.
According to a preferred embodiment of the present invention, a spigot 21 is provided at the free end of the first vertical portion, and the spigot 21 abuts against the outer side of the supporting platform 14, and is used for positioning connection with the supporting platform 14 and bearing radial shearing force to prevent the pressure plate 2 from rotating or tilting.
The first horizontal part is provided with press plate through holes 22, and preferably, the number and the aperture of the press plate through holes 22 are the same as those of the support plate through holes.
According to the present invention, the lower plane of the first horizontal portion has the same length as the upper plane of the support table 14, so that the platen 2 can be horizontally placed on the support table 14 with the first vertical portion closely attached to the support table 14.
According to a preferred embodiment of the present invention, the pressing plate 2 is connected to the supporting platform 14 through bolts and nuts, and the pressing plate 2 fastens the tube plate 3 and the fixing ring 1 together by sequentially passing the bolts through the pressing plate through holes 22 and the supporting plate through holes and then fastening them with the upper and lower nuts, so as to effectively prevent the tube plate 3 from rotating inside the fixing ring 1.
Preferably, the bolts are studs, one bolt being provided with two nuts.
According to a preferred embodiment of the invention, said second vertical portion comprises a first corner 23 and a second corner 24, both the first corner 23 and the second corner 24 being provided as inclined planes;
preferably, the first corner 23 and the second corner 24 are beveled at different angles.
The inclined angle of the first corner 23 is set to 45 degrees, so that unnecessary scratches caused by sharp corners in the installation process of workers in the construction process can be avoided; setting the bevel angle of the second corner 24 to 60 ° can reduce the hard impact of the pressure plate 2 on the fixing ring 1 and the tube plate 3 during the pressing process.
According to a preferred embodiment of the present invention, the corner of the free end of the second horizontal portion, which is close to the tube plate 3, is set to be arc-shaped, so that the pressing plate 2 can be effectively prevented from scratching the surface of the tube plate 3, and a protective effect is achieved.
A turning method of a steam generator tube plate turning device, preferably using the steam generator tube plate turning device of one of claims 1 to 8, characterized in that the turning method comprises the following steps:
and 4, disassembling the device.
In the step 1, the fixing ring 1 is firstly installed around the tube plate 3 for one circle, then bolts penetrate through the fixing plate through holes 13 on the adjacent fixing rings 1, and the adjacent fixing plates 11 are fastened by nuts, so that the fixing rings 1 are tightly attached to the tube plate 3.
Through the effect of bolt and nut, the sealed pad that is located solid fixed ring 1 inner wall side is the atress and is extrudeed to increase the frictional force between solid fixed ring 1 and the tube sheet 3, prevent that tube sheet 3 is at the inside free rotation of solid fixed ring 1. Simultaneously, if 3 outer walls of tube sheet are out of round or because there is unevenness place in the restriction of preparation technology, the sealed pad can fill the depressed part through extruding the back for solid fixed ring 1 closely wraps up in 3 outside a week of tube sheet.
According to a preferred embodiment of the present invention, step 2 is divided into the following 2 sub-steps:
step 2-1, tightly attaching the first horizontal part of the pressing plate 2 to the supporting table 14 of the fixing ring 1, simultaneously tightly attaching the second vertical part of the pressing plate 2 to the outer side of the tube plate 3, tightly attaching the second horizontal part to the plate surface of the tube plate 3, and arranging the pressing plate 2;
and 2-2, simultaneously penetrating a bolt through the pressing plate through hole 22 and the support table through hole, and vertically installing a nut on the bolt for fastening so that the tube plate 3 and the fixing ring 1 are fastened into a whole.
Although the sealing ring can increase the friction force between the fixing ring 1 and the tube plate 3 and reduce the rotation of the tube plate 3 in the sealing ring, the tube plate 3 has an excessive self weight, so that relative displacement is easily generated between the fixing ring 1 and the tube plate 3 in the process of hanging and rotating the fixing ring 1. Can further guarantee the stability between tube sheet 3 and the solid fixed ring 1 through clamp plate 2 for tube sheet 3 and solid fixed ring 1 are firm as an organic whole through violently indulging two-way effort, hang the condition that relative displacement can not appear in the rotation in-process.
Hanging the lifting hooks symmetrically on the lifting lugs 15 of the fixing ring 1, lifting the tube plate 3 and carrying out transferring and turning-over operation.
Step 4, dismounting device
After the turning-over operation is completed, under the condition that the tube plate 3 is horizontally placed, the bolt and the nut on the pressing plate 2 are firstly disassembled, and the pressing plate 2 is taken down; and then disassembling the bolts and nuts between the fixing rings 1, and respectively taking down the fixing rings 1 to finish the disassembly of the device.
According to the application, the turning-over method is ingenious in design and is a concept which is not existed in the existing turning-over device. The operation is simple, the practicability is high, the tube plate 3 can be turned over and lifted to be transported under the condition that the surface of the tube plate 3 is not scratched, and the technical problem that lifting lugs cannot be directly welded on the tube plate 3 is solved.
According to the application, the turnover device can be connected with machinery to realize assembly positioning through the steam generator tube plate, the turnover device consumes few materials, is low in manufacturing cost, convenient to install and disassemble, and simple and understandable in operation.
The present invention has been described above in connection with preferred embodiments, which are merely exemplary and illustrative. On the basis of the above, the invention can be subjected to various substitutions and modifications, and the substitutions and the modifications are all within the protection scope of the invention.
Claims (4)
1. A turnover device of a tube plate of a steam generator, which is characterized in that,
the turning-over device comprises a fixing ring (1) and a pressing plate (2);
the fixing ring (1) is of an arc structure, and a fixing plate (11) is arranged at the opening end of the arc;
the fixed ring (1) and the tube plate (3) are fixedly connected into a whole by the pressure plate (2);
the number of the fixing rings (1) is 2, the two fixing rings (1) are spliced into a circular ring, and the outer diameter of the tube plate (3) is equal to the inner diameter of the circular ring;
the fixing plate (11) is vertically arranged on the outer side wall of the fixing ring (1), and a rib plate (12) is further arranged on one side of the fixing plate (11);
the rib plate (12) is positioned on a common vertical surface of the outer side walls of the fixing plate (11) and the fixing ring (1);
the fixing plate (11) is also provided with a plurality of fixing plate through holes (13);
a plurality of groups of supporting platforms are arranged on the fixed ring (1), each group of supporting platforms comprises two supporting platforms (14) which are axially and symmetrically arranged, supporting platform through holes are arranged on the supporting platforms (14),
two axially symmetrical support tables (14) are respectively arranged at the upper end and the lower end of the outer side wall of the fixed ring (1) and are used for supporting the pressing plate (2);
the pressing plate (2) is of a folding type and comprises a first vertical part, a first horizontal part, a second vertical part and a second horizontal part;
a spigot (21) is arranged at the free end of the first vertical part, and the spigot (21) is abutted against the outer side of the support table (14);
the second vertical portion comprises a first corner (23) and a second corner (24), and the first corner (23) and the second corner (24) are both provided as inclined planes;
the bevel angle of the first corner (23) is set to 45 DEG, and the bevel angle of the second corner (24) is set to 60 DEG;
the corner of the free end of the second horizontal part, which is close to the tube plate (3), is set to be in an arc shape.
2. The steam generator tube sheet turnover device of claim 1,
the number of the rib plates (12) is two, the number of the fixing plate through holes (13) is three, and the rib plates (12) and the fixing plate through holes (13) are arranged at intervals.
3. The steam generator tube sheet turnover device of claim 1,
the center of the outer side wall of the fixing ring (1) is also provided with a plurality of lifting lugs (15), the number of the lifting lugs (15) is 8, and the lifting lugs are arranged on the outer side wall of the fixing ring (1) at equal intervals;
rib plates are vertically arranged on two sides of the lifting lug (15).
4. The steam generator tube sheet turnover device of claim 3,
a pressing plate through hole (22) is formed in the first horizontal part;
the number and the aperture of the pressing plate through holes (22) are the same as those of the supporting plate through holes.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110076482.9A CN112794204B (en) | 2021-01-20 | 2021-01-20 | Steam generator tube plate turnover device and method |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110076482.9A CN112794204B (en) | 2021-01-20 | 2021-01-20 | Steam generator tube plate turnover device and method |
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| CN112794204A CN112794204A (en) | 2021-05-14 |
| CN112794204B true CN112794204B (en) | 2022-12-23 |
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| CN202110076482.9A Active CN112794204B (en) | 2021-01-20 | 2021-01-20 | Steam generator tube plate turnover device and method |
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Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111421280A (en) * | 2020-05-04 | 2020-07-17 | 王美娟 | Welding fixture for curvature parts |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109607367A (en) * | 2018-12-29 | 2019-04-12 | 南通中远船务工程有限公司 | A kind of console mode multipurpose variable cross-section hanging beam |
| CN110104545B (en) * | 2019-04-30 | 2020-12-25 | 哈电集团（秦皇岛）重型装备有限公司 | Pipe plate assembly hoisting and turning tool and hoisting and turning method |
| CN110371841A (en) * | 2019-08-13 | 2019-10-25 | 上海电气核电设备有限公司 | A kind of turning tool and its application method |
| CN212315320U (en) * | 2020-04-09 | 2021-01-08 | 二重集团（镇江）重型装备厂有限责任公司 | Overturning and hoisting tool for large tube plate forging |
| CN215402540U (en) * | 2021-01-20 | 2022-01-04 | 哈电集团（秦皇岛）重型装备有限公司 | Steam generator tube sheet turnover device |
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Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111421280A (en) * | 2020-05-04 | 2020-07-17 | 王美娟 | Welding fixture for curvature parts |
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