CN109335962B - Method for hoisting superheater component on rear furnace top of boiler - Google Patents
Method for hoisting superheater component on rear furnace top of boiler Download PDFInfo
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- CN109335962B CN109335962B CN201811255527.3A CN201811255527A CN109335962B CN 109335962 B CN109335962 B CN 109335962B CN 201811255527 A CN201811255527 A CN 201811255527A CN 109335962 B CN109335962 B CN 109335962B
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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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Abstract
the invention provides a method for hoisting a superheater component on the rear furnace top of a boiler, which comprises the following steps: assembling on the ground: standing the rear furnace top superheater tube panel on the ground, and penetrating a vertical low secondary and upper section intermediate wall superheater and a vertical low secondary and suspension tube into a wall penetrating hole of the rear furnace top superheater tube panel by using a crawler crane; the other ends of the vertical low secondary and upper section intermediate wall superheater and the vertical low secondary and suspension pipes are supported by a bracket; turning over and hoisting the assembly: lifting and turning over the assembled components to an upright state by using a crawler crane and a horizontal tower crane; hoisting the assembly in place: and after the assembly is turned over, hoisting the assembly in place by using a horizontal tower crane, after the assembly is in place, throwing and hanging the assembly on a secondary beam of a furnace roof by using a chain hoist, and after the assembly is adjusted, installing the assembled assembly. The method greatly shortens the construction period, most of the working faces are finished on the ground, overhead operation is reduced, the safety is higher, and meanwhile, the cost of the main lifting appliance is greatly reduced.
Description
Technical Field
The invention belongs to the field of boiler construction and installation research, and particularly relates to a method for hoisting a superheater component on the rear top of a boiler.
background
the method for installing the rear furnace top superheater, the upper partition wall superheater, the vertical section low temperature superheater and the suspension pipe in the domestic thermal power generating unit boiler at present comprises the steps of firstly installing the rear furnace top superheater, and starting to penetrate the vertical low secondary superheater, the upper partition wall superheater and the suspension pipe one by one after all the devices are completely installed.
disclosure of Invention
The present invention aims to solve at least one of the above technical problems to a certain extent. Therefore, the invention provides a method for hoisting a superheater component on the rear furnace top of a boiler, which greatly shortens the construction period, completes most of the operation surface on the ground, reduces overhead operation, has higher safety and greatly reduces the cost of a main hanger.
The technical scheme of the invention is as follows: a method for hoisting a superheater component on the rear top of a boiler comprises the following steps:
Assembling on the ground: standing the rear furnace top superheater tube panel on the ground, and penetrating a vertical low secondary and upper section intermediate wall superheater and a vertical low secondary and suspension tube into a wall penetrating hole of the rear furnace top superheater tube panel by using a crawler crane; one end of the vertical lower part and the vertical lower part penetrates through a wall penetrating hole of a rear furnace top superheater tube panel and then is clamped at the top of the rear furnace top superheater tube panel through a first steel tube; one end of the suspension pipe and one end of the upper partition wall superheater penetrate through a wall penetrating hole of the rear furnace top superheater tube panel and are clamped at the top of the rear furnace top superheater tube panel through a second steel plate hole; the other ends of the vertical low secondary and upper section intermediate wall superheater and the vertical low secondary and suspension pipes are supported by a bracket;
turning over and hoisting the assembly: lifting and turning over the assembled components to an upright state by using a crawler crane and a horizontal tower crane;
Hoisting the assembly in place: and after the assembly is turned over, hoisting the assembly in place by using a horizontal tower crane, after the assembly is in place, throwing and hanging the assembly on a secondary beam of a furnace top plate by using a chain hoist, and after the assembly is adjusted, butt-welding the assembled assembly with an outlet header of a furnace top superheater and a rear wrapping wall.
In the above scheme, the suspension pipe comprises a low resuspension pipe, an economizer suspension pipe and a low inlet header suspension pipe.
Further, the vertical low that wears to adorn on back furnace roof superheater tube panel, upper segment mid-board superheater, vertical low and hanging pipe do from the front to back in proper order: the system comprises a vertical low-pass and low-resuspension pipe, an upper-section mid-partition superheater, a vertical low-pass and economizer suspension pipe, a vertical low-pass and low-pass inlet header suspension pipe and an economizer suspension pipe.
In the scheme, the upper end and the lower end of the bracket are connected through I-shaped steel;
And the lower part of the hook head of the crawler crane is connected with the I-shaped steel through a steel wire rope.
Furthermore, the horizontal tower crane is connected to a rear furnace top superheater tube panel through a steel wire rope.
Further, the steel wire rope is connected with a rear furnace top superheater tube panel through a lifting lug.
Compared with the prior art, the invention has the beneficial effects that: the invention innovatively mounts the vertical low-then-vertical-low-pass and upper-section partition wall superheater and the suspension pipe on the ground and penetrates through the tube panel of the rear furnace top superheater, the combined parts are directly hoisted by a main boiler mounting hanger after the combination is finished, each component is temporarily suspended on the plate secondary beam by a chain hoist and a steel wire rope after being in place, and the rear furnace top superheater tube panel is directly welded and mounted with the outlet header and the rear wrapping wall of the furnace top superheater after being adjusted. The method has high ground combining speed, and greatly shortens the construction period compared with the method that the ceiling superheater is hoisted firstly, and then components such as a vertically lower component and a vertically lower component are installed in a penetrating way. Most of the working surfaces are finished on the ground, so that the overhead operation is reduced, and the safety is higher. All can only use 1 50t crawler cranes to make up and wear to adorn on ground, wear to adorn efficiently, compare in hoisting ceiling over heater earlier, wear to adorn perpendicular low again, perpendicular low waiting subassembly, the horizontal tower crane class expense of the main hoist that significantly reduces.
Drawings
The above and/or additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:
FIG. 1 is a schematic diagram of a post-furnace top superheater tube panel in accordance with an embodiment of the present invention;
FIG. 2 is a schematic view of the arrangement of components on the after-roof superheater tube panels in accordance with an embodiment of the present invention;
FIG. 3 is a schematic view of a vertical low re-mount of an embodiment of the present invention;
FIG. 4 is a schematic view of FIG. 3 taken along line A;
FIG. 5 is a schematic view of a vertical low re-penetration implementation of one embodiment of the present invention;
FIG. 6 is a schematic view of a stent according to an embodiment of the present invention;
FIG. 7 is a schematic view in the direction B of FIG. 6;
FIG. 8 is a schematic diagram illustrating the reinforcement of the splicing portion of the hanger tube and the superheater tube panel on the rear furnace top according to an embodiment of the present invention;
FIG. 9 is a schematic view in the direction C of FIG. 8;
FIG. 10 is a schematic diagram of an assembly turn over according to an embodiment of the present invention;
FIG. 11 is a schematic view of the location of lifting lugs on the platen of a post-roof superheater in accordance with an embodiment of the present invention;
Figure 12 is a schematic view of a shackle according to an embodiment of the invention;
Fig. 13 is a schematic view in the direction D in fig. 12.
In the figure: 1. a rear furnace top superheater tube panel; 2. vertically lower; 3. an upper section mid-partition superheater; 4. vertically over-passing; 5. a wall through hole; 6. a low resuspension tube; 7. an economizer hanger tube; 8. lower than the inlet header suspension pipe; 9. an outlet header of the furnace top superheater; 10. a first steel pipe; 11. a first steel plate; 12. rear furnace top superheater fins; 13. a rear furnace top superheater tube; 14. a support; 15. channel steel; 16. a second steel pipe; 17. a second steel plate; 18. a suspension tube sleeve; 19. lifting lugs; 20. a crawler crane; 21. a horizontal tower crane; 22. and (4) H-shaped steel.
Detailed Description
Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are illustrative and intended to be illustrative of the invention and are not to be construed as limiting the invention.
In the description of the present invention, it is to be understood that the terms "central," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "axial," "radial," "vertical," "horizontal," "inner," "outer," and the like are used in the orientations and positional relationships indicated in the drawings for convenience in describing the present invention and for simplicity in description, and are not intended to indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and are not to be considered limiting. Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless specifically defined otherwise.
In the present invention, unless otherwise expressly specified or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can, for example, be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
The method for hoisting the boiler rear roof superheater module according to the embodiment of the invention is firstly described in detail with reference to the attached drawings.
The invention discloses a method for hoisting a rear furnace top superheater component of a boiler, which comprises the following steps of:
assembling on the ground: the method comprises the steps of standing a rear furnace top superheater tube panel 1 on the ground, assembling a vertical lower superheater tube 2, an upper-section intermediate wall superheater tube 3, a vertical lower superheater tube 4 and a suspension tube on the rear furnace top superheater tube panel 1 as shown in figure 1, arranging the components on the rear furnace top superheater tube panel 1 as shown in figure 2,
Hoisting: and turning over the assembled component to an upright state for installation.
preferably, the ground assembling step specifically comprises:
The method comprises the following steps of (1) standing a rear furnace top superheater tube panel 1 on the ground, and enabling a vertical lower superheater tube 2, an upper-section middle partition wall superheater tube 3, a vertical lower superheater tube 4 and a suspension tube to penetrate through a wall penetrating hole 5 of the rear furnace top superheater tube panel 1 by using a crawler crane;
as shown in fig. 3, one end of the vertical lower tube 2 and one end of the vertical lower tube 4 penetrate through the wall through hole 5 of the rear furnace top superheater tube panel 1 and are clamped at the top of the rear furnace top superheater tube panel 1 by using a first steel tube 10 as a pin; and the first steel plates 11 are respectively welded on the vertical lower part 2 and the vertical lower part 4 and are used for fixing the vertical lower part 2 and the vertical lower part 4, and the first steel plates 11 clamp the first steel pipes 10, so that the vertical lower part 2 and the vertical lower part 4 are clamped on the rear furnace top superheater tube panel 1.
one end of the suspension pipe and the upper-section intermediate wall superheater 3 passes through the wall penetrating hole 5 of the rear furnace top superheater tube panel 1 and then passes through the suspension pipe sleeve 18, and the suspension pipe and the upper-section intermediate wall superheater tube panel are clamped at the top of the rear furnace top superheater tube panel 1 through holes formed in a second steel plate 17.
as shown in fig. 5, the vertical lower heater 2, the upper-stage intermediate wall superheater 3, the vertical lower heater 4, and the other end of the hanger pipe are supported by a bracket 14.
Preferably, the hoisting step specifically comprises:
And lifting and turning the assembled assembly to an upright state by using a crawler crane 20 and a horizontal tower crane 21, installing the assembled assembly in place by using the horizontal tower crane 21, throwing and hanging the assembled assembly on a secondary beam of a furnace top plate by using a chain hoist after the assembly is in place, and butt-welding the assembled assembly with an outlet header 9 of a superheater on the furnace top and a rear ladle wall after the assembly is adjusted.
Preferably, the vertical lower heater 2, the upper section intermediate wall superheater 3, the vertical lower heater 4 and the bracket 14 supported by the other end of the suspension pipe are connected through an I-shaped steel 22;
The lower part of the hook head of the crawler crane 20 is connected with an I-shaped steel 22 through a steel wire rope.
preferably, the horizontal tower crane 21 is connected to the rear furnace top superheater tube panel 1 through a steel wire rope.
preferably, the steel wire rope is connected with the rear furnace top superheater tube panel 1 through a lifting lug.
in the specific implementation process, the rear furnace top superheater 1, the vertical section low-temperature superheater, the vertical section low-temperature reheater, the upper section mid-partition wall superheater and the suspension pipe are installed and constructed by using the method, 1 50t of crawler crane 20 can be used for combined penetrating and mounting on the ground, penetrating and mounting efficiency is high, and compared with the method that the ceiling superheater is hoisted firstly, then, components such as a vertical low-level tower crane and a vertical low-level tower crane are penetrated and mounted, 21-shift cost of the main hanger 50t of the horizontal tower crane is greatly reduced. The ground combination speed is high, compared with the method that the components are hoisted firstly and then the furnace top superheater 1 is installed, then the components with the vertical lower part and then the components with the vertical lower part are installed by 4, and the construction period is greatly shortened. Most of the working surfaces are finished on the ground, so that the overhead operation is reduced, and the safety is higher. The method is suitable for the combined installation of all the devices such as the rear furnace top superheater 1, the vertical low-temperature reheater, the vertical low-temperature superheater, the upper-section mid-partition wall superheater, the suspension pipe and the like in the rear smoke well area of the pulverized coal fired boiler of the power plant.
The working principle of the invention is as follows:
The rear furnace top superheater of the boiler comprises seven tube panels, each tube panel is L-shaped, as shown in figure 1, and can be directly erected on the ground without additionally reinforcing the tube panels. And (3) vertically lowering the upper section middle wall superheater 2, vertically lowering the upper section middle wall superheater 4 and hanging pipes into a pipe panel wall penetrating hole 5 by using 1 50t crawler crane 20. Because the vertical secondary low heater 2 and the vertical secondary low heater 4 are of a sheet structure, one ends of the vertical secondary low heater 2 and the vertical secondary low heater 4 penetrate through the tube panel 1 of the rear furnace top superheater and then are clamped at the top of the tube panel by using a first steel tube 10 as a pin; the suspension pipe and the upper section intermediate wall superheater 3 are both single pipes, and one end of the suspension pipe and the upper section intermediate wall superheater 3 is clamped at the top of the pipe panel by using the holes of the second steel plate 17. And (3) using a No. 12 channel steel as a temporary support to support the other end of the superheater 3 of the upper partition wall, namely the vertical lower part and the vertical lower part are 2 and 4, and a hanging pipe and the other end of the superheater 3 of the upper partition wall, lifting and turning the assembly to be in an upright state by using a 50t crawler crane 20 and a 50t horizontal tower crane 21 matched with a main boiler hanger, and finally installing the assembly in place by using the 50t horizontal tower crane 21.
The specific implementation process of the invention is as follows:
preparing technologies, materials and tools, namely, erecting a furnace top superheater tube panel 1 on the ground, penetrating and reinforcing a vertical low secondary superheater tube 2 and a suspension tube thereof, penetrating and reinforcing an upper section mid-partition superheater 3, penetrating and reinforcing a vertical low-temperature superheater tube and a suspension tube thereof, and installing the assembly in place when the assembly is turned over to be in place.
1. preparation work
Checking whether all the equipment is complete according to a drawing list; checking whether the surface of the equipment such as a rear furnace top superheater tube panel 1, a vertical lower device 2, a vertical lower device 4 and the like has defects such as cracks, impact injuries, sand holes and the like, and if the defects exist, processing in advance; the equipment on site is subjected to 100% spectrum detection and analysis of material quality, and the installation material quality is ensured to be correct.
2. assembly
The vertical low secondary pipe 2, the upper section intermediate wall superheater 3, the vertical low secondary pipe 4 and the suspension pipe which are inserted on the rear furnace top superheater pipe panel 1 are arranged from front to back as shown in the figure 2, one end of the rear furnace top superheater pipe panel 1 is connected with a furnace top superheater outlet header 9, and the vertical low secondary pipe 2, the low secondary suspension pipe 6, the upper section intermediate wall superheater 3, the vertical low secondary pipe 4, the economizer suspension pipe 7, the vertical low secondary pipe 4, the low inlet header suspension pipe 8 and the economizer suspension pipe 7 are sequentially arranged from one end close to the furnace top superheater outlet header 9.
The equipment which is penetrated and arranged on the superheater tube panel 1 on the back furnace top is mainly divided into a tube panel and a tube, the vertical lower part 2 and the vertical lower part 4 are sheet tube panels, and the suspension tube and the upper section intermediate wall superheater 3 are single tubes.
As shown in fig. 3 and 4, the method for reinforcing the splicing part of the tube panel 1 of the rear furnace top superheater when the vertical lower tube panel 2 is penetrated and installed comprises the following steps: the vertical lower plate 2 and the vertical lower plate 4 are of a sheet structure, the first steel plate 11 is welded on the vertical lower plate 2 and the vertical lower plate 4 and used for fixing the tube panels, and the first steel plate 11 clamps the first steel tube 10, so that the vertical lower plate 2 and the vertical lower plate 4 are clamped on the rear furnace top superheater tube panel 1. Taking the vertical lower and the 2-pass as an example, the effect after the completion of the pass-through is shown in fig. 5.
As shown in fig. 6 and 7, the vertical low-2 penetration type rear tail part is made of #14 channel steel 15 or # 12I-steelThe support 14 made of the second steel pipe 16 is reinforced, the support 14 is in a ladder shape, and the vertical lower part and the bottom part 2 are fixed into a whole, so that the assembly can be turned over conveniently. When the single pipe of the suspension pipe and the upper partition wall superheater 3 is installed in a penetrating mode, a method for reinforcing the inserting part of the suspension pipe and the rear furnace top superheater pipe panel 1 is shown in fig. 8 and 9. The rear furnace top superheater tube panel 1 comprises rear furnace top superheater fins 12 and rear furnace top superheater tubes 13; the aperture of the wall through hole 5 on the rear furnace top superheater tube panel 1 is smaller than the size of the second steel plate 17, the rear furnace top superheater tube panel 1 and the second steel plate 17 do not need to be welded, namely, a single tube is welded with the suspension tube sleeve 18, and the single tube is clamped on the rear furnace top superheater tube panel 1 through the second steel plate 17.
3. turning over and hoisting assembly
The rear furnace top superheater in the embodiment is combined and finishedand the total number of the seven assemblies is seven, each assembly weighs about 19t, a 50t crawler crane 20 and a 50t horizontal tower crane 21 are used for lifting, hoisting and turning over, and the 50t horizontal tower crane 21 is used for directly positioning after turning over is finished. When the body is turned over, the pipe panels which are vertically over 4 and vertically over 2 are connected into a whole by 12# I-steel 22, and four lines extend below the hook heads of a 50t crawler crane 2021-extending six ways of 50t horizontal tower crane from a steel wire rope to # 12I-steelThe steel wire rope is arranged on the rear furnace top superheater tube panel 1, the steel wire rope is connected with the rear furnace top superheater tube panel 1 through lifting lugs, and the lifting lugs 19 are made of T20mm thick Q235 steel plates. The turning schematic diagram is shown in the following figure 10, the arrangement position of the lifting lug 19 on the post-roof superheater tube panel 1 is shown in the following figure 11, and the detailed diagram of the lifting lug 19 is shown in the following figures 12 and 13.
After the turning-over to the vertical state, the whole assembly is mainly stressed on 6 steel wire ropes horizontally hung at 50t, so that the stress of each lifting lug 19 is about 3.7t, and after the angle is considered, the thickness of each lifting lug is 20mm, the length of a shearing surface is 30mm, and the shearing stress of the lifting lug ismeets the requirements.
4. The assembly is hoisted in place
After the assembly is turned over, the assembly is directly hoisted in place by a 50T horizontal tower crane 21, is thrown and hung on a secondary beam of a furnace top plate by 6 chain hoists of 5T after being in place, and is butt-welded with an outlet header 9 of a superheater on the furnace top and a rear ladle wall after being adjusted.
the specific application example of the invention is as follows:
The 2 x 350MW unit boiler of the embodiment is an n-shaped boiler with a full suspension structure, which is an ultra-critical parameter variable-pressure operation direct-current boiler produced by Shanghai boiler (group) Limited company, and has a single hearth, single reheating, balanced ventilation, open-air arrangement, solid-state deslagging, an all-steel framework. The flow rate of the superheated steam of the boiler is 1172t/h, the outlet pressure of the superheated steam is 25.4MPa, and the outlet temperature of the superheated steam is 571 ℃; the flow rate of the reheat steam is 962t/h, the inlet and outlet pressure of the reheat steam is 5.4/5.22MPa, and the inlet and outlet temperature of the reheat steam is 343/569 ℃; the design thermal efficiency is 93.9%.
The boiler overheating system comprises a front furnace top superheater, a rear furnace top superheater, a wall-wrapped superheater, a low-temperature superheater, a screen type superheater and a final superheater, the rear furnace top superheater is arranged at the top of a flue gas area of a rear smoke well, a plurality of tube panels and tubes are inserted into tube panels of the rear furnace top superheater, the structural arrangement is complex, the construction difficulty is large, and the method is applied to installation of the rear furnace top superheater component, so that the construction difficulty is reduced, the construction period is shortened, the safety is improved, and the cost is greatly reduced. By applying the method disclosed by the invention, the construction period of a single unit is saved by 21 days, and the cost of two units is saved by 44 ten thousand yuan in total.
the practice of 2 x 350MW unit engineering proves that the method is feasible in the construction and installation of the furnace top superheater tube panel 1, the vertical lower part of the tube panel is more than 2, the vertical lower part of the tube panel is more than 4, the hanging tube and other assemblies, and the method has the advantages of simple process, low cost, short construction period and high safety. The traditional method is feasible according to the schedule construction, but most of the engineering quantity is finished at high altitude, the danger coefficient is extremely high, the invention fully considers the actual engineering situation, optimizes the working procedures and practically ensures the personal safety of constructors.
At present, the arrangement of the smoke well equipment behind the 1000 MW-level unit boiler in China is basically the same as the arrangement structure of the 350 MW-level unit boiler in the embodiment, so that the method can be completely applicable, and if the method is applied to the 1000 MW-level unit, the saved cost and the construction period are considerable.
the above-listed detailed description is only a specific description of a possible embodiment of the present invention, and they are not intended to limit the scope of the present invention, and equivalent embodiments or modifications made without departing from the technical spirit of the present invention should be included in the scope of the present invention.
Claims (6)
1. A method for hoisting a superheater component on the rear top of a boiler is characterized by comprising the following steps:
assembling on the ground: the rear furnace top superheater tube panel (1) is erected on the ground, and the vertical lower secondary tube (2), the upper-section middle partition wall superheater (3), the vertical lower secondary tube (4) and the suspension tube are arranged in a wall penetrating hole (5) of the rear furnace top superheater tube panel (1) in a penetrating mode through a crawler crane; one end of each of the vertical lower part (2) and the vertical lower part (4) passes through a wall penetrating hole (5) of the rear furnace top superheater tube panel (1) and then is clamped at the top of the rear furnace top superheater tube panel (1) through a first steel tube (10); one end of the suspension pipe and one end of the upper partition wall superheater (3) penetrate through a wall penetrating hole (5) of the rear furnace top superheater tube panel (1) and are clamped at the top of the rear furnace top superheater tube panel (1) through holes of a second steel plate (17); the vertical low heater (2), the upper section intermediate wall superheater (3), the vertical low heater (4) and the other end of the suspension pipe are supported by a bracket (14);
Turning over and hoisting the assembly: lifting and turning over the assembled components to an upright state by using a crawler crane (20) and a horizontal tower crane (21);
Hoisting the assembly in place: after the assembly is turned over, the assembly is hoisted in place by a horizontal tower crane (21), the assembly is thrown and hung on a secondary beam of a furnace top plate by a chain hoist after being in place, and the assembled assembly is butt-welded with an outlet header of a superheater on the furnace top and a rear wrapping wall after being adjusted.
2. The method of boiler back ceiling superheater assembly hoisting of claim 1, characterized in that the hanger tubes include a low resuspension tube (6), an economizer hanger tube (7), and a low overfall header hanger tube (8).
3. the method for hoisting the boiler rear roof superheater component according to the claim 2, characterized in that the vertical low superheater (2), the upper section intermediate wall superheater (3), the vertical low superheater (4) and the suspension pipe which are arranged on the rear roof superheater tube panel (1) in a penetrating way sequentially comprise the following steps from front to back: the device comprises a vertical low secondary (2), a low secondary suspension pipe (6), an upper-section mid-partition superheater (3), a vertical low secondary (4), an economizer suspension pipe (7), a vertical low secondary (4), a low secondary inlet header suspension pipe (8) and an economizer suspension pipe (7).
4. The method for hoisting the boiler back roof superheater assembly according to claim 1, characterized in that the upper and lower ends of the support frame (14) are connected by an i-steel (22);
The lower part of the hook head of the crawler crane (20) is connected with the I-shaped steel (22) through a steel wire rope.
5. The method for hoisting the boiler back roof superheater component according to claim 4, characterized in that the horizontal tower crane (21) is connected to the back roof superheater tube panel (1) through a steel wire rope.
6. the method for hoisting the boiler rear roof superheater component according to claim 5, characterized in that the wire rope is connected with the rear roof superheater tube panel (1) through a lifting lug (19).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811255527.3A CN109335962B (en) | 2018-10-26 | 2018-10-26 | Method for hoisting superheater component on rear furnace top of boiler |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811255527.3A CN109335962B (en) | 2018-10-26 | 2018-10-26 | Method for hoisting superheater component on rear furnace top of boiler |
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| Publication Number | Publication Date |
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| CN109335962A CN109335962A (en) | 2019-02-15 |
| CN109335962B true CN109335962B (en) | 2019-12-17 |
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Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2482933A1 (en) * | 1980-05-20 | 1981-11-27 | Vallourec | METHOD AND DEVICE FOR HANDLING LONG PRODUCTS, IN PARTICULAR TUBES |
| JPH11171468A (en) * | 1997-12-15 | 1999-06-29 | Ishikawajima Harima Heavy Ind Co Ltd | Loop pipe panel hanging gear |
| CN201842567U (en) * | 2010-04-22 | 2011-05-25 | 东方日立锅炉有限公司 | Lifting frame for modular tube panel of waste heat boiler |
| CN102022718B (en) * | 2010-09-21 | 2012-10-17 | 中国石油化工股份有限公司 | Exchanging method of exhaust-heat boiler low temperature economizer |
| CN201825635U (en) * | 2010-10-21 | 2011-05-11 | 四川电力建设三公司 | Hoisting structure of power station boiler |
| CN103350947B (en) * | 2013-07-18 | 2015-04-08 | 中国五冶集团有限公司 | Suspension system and suspension method both special for boiler heating surface pipe rack |
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2018
- 2018-10-26 CN CN201811255527.3A patent/CN109335962B/en active Active
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