CN113526369B - Multi-machine matching hoisting method for ultra-long starting separator of boiler - Google Patents
Multi-machine matching hoisting method for ultra-long starting separator of boiler Download PDFInfo
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- CN113526369B CN113526369B CN202110730701.0A CN202110730701A CN113526369B CN 113526369 B CN113526369 B CN 113526369B CN 202110730701 A CN202110730701 A CN 202110730701A CN 113526369 B CN113526369 B CN 113526369B
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- long starting
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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
- B66C23/00—Cranes comprising essentially a beam, boom, or triangular structure acting as a cantilever and mounted for translatory of swinging movements in vertical or horizontal planes or a combination of such movements, e.g. jib-cranes, derricks, tower cranes
- B66C23/16—Cranes comprising essentially a beam, boom, or triangular structure acting as a cantilever and mounted for translatory of swinging movements in vertical or horizontal planes or a combination of such movements, e.g. jib-cranes, derricks, tower cranes with jibs supported by columns, e.g. towers having their lower end mounted for slewing movements
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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
- B66C23/00—Cranes comprising essentially a beam, boom, or triangular structure acting as a cantilever and mounted for translatory of swinging movements in vertical or horizontal planes or a combination of such movements, e.g. jib-cranes, derricks, tower cranes
- B66C23/62—Constructional features or details
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Abstract
The invention discloses a multi-machine matching hoisting method for an ultra-long starting separator of a boiler, which comprises the following steps: firstly, hoisting the ultra-long starting separator outside the furnace, and then hoisting the separator inside the furnace; when the separator is hoisted outside the furnace, the separator is hoisted to the set height by the tower crane alone, and when the separator is hoisted inside the furnace, the separator is hoisted to the set height by one of the hoists and the tower crane in a matching way, and then the separator is hoisted to the position by a plurality of hoists simultaneously.
Description
Technical Field
The invention belongs to the technical field of hoisting of an ultra-long starting separator, and particularly relates to a multi-machine matching hoisting method of an ultra-long starting separator of a boiler.
Background
The statements herein merely provide background information related to the present disclosure and may not necessarily constitute prior art.
At present, a 250MW supercritical coal-fired unit boiler starting separator generally adopts a large machine to finish the hoisting work. The inventor finds that the method occupies a large area, and the large-scale machine is quite expensive in cost such as transition cost, machine shift cost, installation and dismantling cost and the like; meanwhile, the positioning difficulty is high, and certain influence is caused on the construction progress.
Disclosure of Invention
Aiming at the defects in the prior art, the invention aims to provide a method for hoisting a boiler ultra-long starting separator by matching a plurality of machines, which can solve the problems of large single machine hoisting occupation space, difficult positioning and the like of the boiler ultra-long starting separator.
In order to achieve the purpose, the invention is realized by the following technical scheme:
in a first aspect, the invention provides a multi-machine matching hoisting method for an ultra-long starting separator of a boiler, which comprises the following steps:
firstly, hoisting the ultra-long starting separator outside the furnace, and then hoisting the separator inside the furnace; when the separator is hoisted outside the furnace, the tower crane is used for hoisting the separator to a set height, and then the multiple hoists are used for hoisting the separator to the proper position.
As a further technical scheme, when the ultra-long starting separator is hoisted outside the furnace, the ultra-long starting separator is transported to the side part of the boiler from a stock ground, and then the ultra-long starting separator is hoisted by a tower crane to be supported at a set position.
As a further technical scheme, after the tower crane lifts the ultra-long starting separator off the ground from a first set position, the ultra-long starting separator rotates until the axis of the ultra-long starting separator is along the radial direction of the boiler, then the ultra-long starting separator is lifted to a second set position, the direction of the ultra-long starting separator is adjusted, the ultra-long starting separator is horizontally close to the boiler between boiler steel frames, and one end of the ultra-long starting separator is supported on a temporary bracket of the boiler steel frames, so that the external lifting is completed.
As a further technical scheme, after the tower crane lifts the ultra-long starting separator away from the ground to a first set position, a braking test is firstly carried out, and the tower crane is inspected.
As a further technical scheme, in the hoisting process, the direction of the ultra-long starting separator is adjusted by using a sliding rope; when one end of the super-long starting separator crosses the shaft center line of the outermost steel frame, the tower crane slowly drops the hook, and one end of the super-long starting separator is supported on a temporary bracket of the boiler steel frame.
As a further technical scheme, when the furnace is hoisted, one of the hoisters is set as a main hoisting device, the other hoisters are set as auxiliary hoisting devices, the main hoisting device is hoisted at one end of the overlong starting separator, the tower crane is hoisted at a hoisting point of the tower crane at the other end, the overlong starting separator is hoisted by the main hoisting device, and the overlong starting separator is rotated by the tower crane in a matched manner to move towards the hearth direction.
As a further technical scheme, when the separator moves to a set point in the direction of the hearth, the ultra-long starting separator is horizontally lifted, the tower crane stops lifting when the separator is lifted to a third set position, the main lifting device stops lifting when the ultra-long starting separator is lifted to a fourth set position by the main lifting device, and at the moment, the ultra-long starting separator is in an inclined state.
As a further technical scheme, when a plurality of winches hoist the separator, the auxiliary hoisting equipment and the ultra-long starting separator are connected to an auxiliary hoisting point, the main hoisting equipment and the auxiliary hoisting equipment are started to hoist the ultra-long starting separator at the same time, until the ultra-long starting separator is in a vertical state, the auxiliary hoisting equipment stops, the main hoisting equipment independently hoists the upper end of the ultra-long starting separator to a fifth set position, and the hoisting is in place.
As a further technical scheme, the distance between a tower crane lifting point and the center of the ultra-long starting separator is a first set distance, the distance between an auxiliary lifting point and the center of the ultra-long starting separator is a second set distance, and the first set distance is larger than the second set distance.
As a further technical scheme, after the hoisting is finished, the chain hoist is used for adjusting, the hanging device is installed, and the ultra-long starting separator is installed.
The invention has the following beneficial effects:
the hoisting method provided by the invention comprises the steps of hoisting in the furnace and hoisting outside the furnace, wherein during hoisting in the furnace, the hoisting is carried out by matching the winch and the tower crane, and then the hoisting is carried out by matching a plurality of winches.
According to the hoisting method, when the tower is hoisted outside the tower, the tower crane is used for hoisting independently, and after the tower crane and the winch are matched to hoist in the furnace, the tower crane is matched to rotate the direction of the overlong starting separator in the process, so that the safety and stability in the hoisting process are ensured.
The hoisting method provided by the invention adopts a multi-machine matching mode to hoist the ultra-long starting separator, and has the advantages of simple operation, convenience in use, high safety, low cost and high efficiency.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this specification, are included to provide a further understanding of the invention, and are included to illustrate an exemplary embodiment of the invention and not to limit the invention.
FIG. 1 is a schematic flow diagram of a method of hoisting according to one or more embodiments of the present invention;
FIG. 2 is a schematic diagram of a winch A and a tower crane used in conjunction with hoisting in a furnace according to one or more embodiments of the invention;
FIG. 3 is a schematic diagram of hoisting of a winch A and a winch B in cooperation during hoisting in a furnace according to one or more embodiments of the invention;
in the figure: the spacing or dimensions between each other are exaggerated to show the location of the various parts, and the illustration is for illustrative purposes only.
Detailed Description
It is to be understood that the following detailed description is exemplary and is intended to provide further explanation of the invention as claimed. Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs.
In a typical embodiment of the present invention, as shown in fig. 1, a method for lifting a boiler ultra-long starting separator by using multiple machines in cooperation is provided, wherein a tower crane and multiple winches are used in the lifting process.
Specifically, the hoisting method comprises the following implementation steps:
the hoisting process of the ultra-long starting separator is divided into an external hoisting process and an internal hoisting process, wherein the external hoisting process is firstly carried out, and then the internal hoisting process is carried out; when the hoisting is carried out outside the furnace, the hoisting is independently completed by a tower crane, and the hoisting in the furnace is completed by the combination of the tower crane and a plurality of winches.
When the separator is hoisted in the furnace, one of the winches is matched with the tower crane to lift the ultra-long starting separator to a set height, and then the multiple winches are used for hoisting the ultra-long starting separator to the proper position.
In the embodiment, the adopted tools are 1 tower crane/40 t flat arm crane and 2 windlasses of 10 t. According to the weight and the overall dimension of the ultra-long starting separator and the weight of large equipment of a boiler body, a matched hoisting scheme of a tower crane and 2 hoists of 10t is determined so as to meet the hoisting work of the whole ultra-long starting separator.
The preparation work needing to be completed before hoisting comprises the following steps: the method comprises the steps of checking and preparing a tower crane, a winch, a hoisting rigging and the like, preparing safety facilities, planning a construction area, configuring personnel and mechanisms, and finishing alignment and acceptance check of a boiler steel frame before hoisting.
When the separator is hoisted outside the furnace, the ultralong starting separator is directly transported to the side part of the boiler from a stock ground, and is independently hoisted by a tower crane to finish hoisting.
In the process, after the tower crane lifts the ultra-long starting separator from the ground to a first set position, the ultra-long starting separator rotates until the axis of the ultra-long starting separator is along the radial direction of the boiler, then the ultra-long starting separator is lifted to a second set position, the direction of the ultra-long starting separator is adjusted, the ultra-long starting separator is horizontally close to the boiler between boiler steel frames, and one end of the ultra-long starting separator is supported on a temporary bracket of the boiler steel frames, so that the external lifting is completed.
In specific implementation, the process of hoisting outside the furnace is as follows:
transporting the ultra-long starting separator to the left side of the boiler, performing a braking test when the ultra-long starting separator is 150mm away from the ground, comprehensively checking a crane and a rope, and starting hoisting after the situation that no fault exists is confirmed; the tower crane starts to turn the rod leftwards, when the tower crane turns to the axis of the outermost left side of the steel frame furnace, the horizontal direction of the ultra-long starting separator is adjusted, the tower crane continues to rise slowly, when the tower crane rises to the height of 37m, the lifting is stopped, the direction of the ultra-long starting separator is adjusted by using a sliding rope, the ultra-long starting separator is ensured to be horizontally arranged from the left 36.2m layer of the furnace, boiler steel frames K1-K2 enter horizontally, the tower crane slowly turns the rod towards the boiler steel frames, when the front lifting point of the ultra-long starting separator crosses the axis of the steel frame shaft of the outermost side, the hook is slowly dropped, the front lifting point of the ultra-long starting separator is placed on a temporary bracket arranged on the steel frame between the 36.2m layers of the outermost axis K1-K2, the hook is dropped, and the hoisting outside of the furnace is completed.
And after the hoisting outside the furnace is finished, the hoisting inside the furnace is carried out, and the hoisting inside the furnace is finished by matching a tower crane and a plurality of cranes.
In the process, one of the winches is set as a main hoisting device, the other winches are auxiliary hoisting devices, the main hoisting device is hoisted at one end of the overlength starting separator, the tower crane is hoisted at a tower crane hoisting point at the other end, the overlength starting separator is hoisted by the main hoisting device and is matched with the tower crane to rotate, the overlength starting separator moves towards the direction of the hearth, the overlength starting separator is horizontally hoisted, the tower crane stops hoisting when being hoisted to a third set position, the main hoisting device stops when the overlength starting separator is hoisted to a fourth set position by the main hoisting device, and at the moment, the overlength starting separator is in an inclined state;
and then connecting the auxiliary hoisting equipment and the overlong starting separator to an auxiliary hoisting point, starting the main hoisting equipment and the auxiliary hoisting equipment to lift the overlong starting separator at the same time, stopping the auxiliary hoisting equipment until the overlong starting separator is in a vertical state, and independently lifting the upper end of the overlong starting separator to a fifth set position by the main hoisting equipment to be hoisted in place.
The distance between the lifting point of the tower crane and the center of the overlong starting separator is a first set distance, and in the embodiment, the first set distance is selected to be 3m.
The auxiliary hoisting point is a second set distance away from the center of the ultra-long starting separator, the first set distance is greater than the second set distance, and in the embodiment, the second set distance is selected to be 1m.
In this embodiment, two winches are used, wherein 10t winch a is a main hoisting device, and winch B is an auxiliary hoisting device.
In specific implementation, the process of hoisting in the furnace is as follows:
unhooking a steel wire rope of the tower crane, lifting the lifting hook to 500mm higher than a 64.6m layer of a steel frame, enabling the lifting hook to be a neutral gear falling hook between the K1-K2 and a 3.2 shaft-4 shaft, selecting a 40t tower crane lifting point at a position 3m away from the center, starting a winch A after a 40t tower crane side steel wire rope and an overlong starting separator are fixed, matching the tower crane with a rotating rod, slowly moving the overlong starting separator to the hearth direction, matching the winch A with the winch to start horizontal lifting of the overlong starting separator when the lifting point of the winch A is superposed with the central line of a 5 shaft, stopping lifting the hook of the tower crane when the vertical height of the overlong starting separator is 3m away from the 36.2m layer, and continuing to slowly lift the winch A, and stopping the winch A and the crane when the overlong starting separator is 45.4m away and the lower part of the tower crane between the K1-K2 shaft and the 3.2 shaft is connected with the lower part of the beam by 500 mm;
passing the fixed pulley of the winch B prepared in advance through a pair of pulleys
The steel wire rope and 2 35t snap rings are well fixed with the ultra-long starting separator, a hoisting point is 1m away from the center of the ultra-long starting separator, a winch B is started, and when the steel wire rope is completely stressed through the winch B, the tower crane is unhooked at the moment; starting the winch A, and simultaneously matching the winch B to continuously lift the ultra-long starting separator;
and the winch B is continuously matched with the winch A to lift the ultra-long starting separator until the ultra-long starting separator is in a vertical state, the auxiliary work of the winch B is finished, and when the winch A independently lifts the upper end of the ultra-long starting separator to the elevation 58.761m, the winch A stops and the starting separator is lifted in place. And adjusting by using a chain hoist hung in advance, installing a hanging device, and completing the installation of the ultra-long starting separator.
The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (8)
1. A multi-machine matching hoisting method for an ultra-long starting separator of a boiler is characterized by comprising the following steps:
firstly, hoisting the ultra-long starting separator outside the furnace, and then hoisting the separator inside the furnace;
when the separator is hoisted outside the furnace, the separator is hoisted by a tower crane independently, the ultra-long starting separator is transported to the side part of the boiler from a stock ground, and then the separator is hoisted by the tower crane independently to be supported at a set position; transporting the ultra-long starting separator to the left side of the boiler, performing a braking test when the ultra-long starting separator is 150mm away from the ground, comprehensively checking the tower crane and the rope, and starting hoisting after the situation that no fault exists is confirmed; the tower crane starts to turn to the left, when the tower crane turns to the center line of the shaft of the outermost steel frame at the left side of the boiler, the horizontal direction of the ultra-long starting separator is adjusted, the tower crane continues to slowly rise, when the tower crane rises to the height of 37m, the rising is stopped, the direction of the ultra-long starting separator is adjusted by using a sliding rope, the ultra-long starting separator is ensured to horizontally enter from the left 36.2m layer of the boiler, the boiler steel frames K1-K2 slowly turn to the boiler steel frame, when the front lifting point of the ultra-long starting separator crosses the center line of the shaft of the outermost steel frame, the hook is slowly dropped, the front lifting point of the ultra-long starting separator is placed on a temporary bracket arranged on the steel frame between the center lines K1-K2 of the shaft of the outermost steel frame at the 36.2m layer, the hook is stopped, and the hoisting outside of the boiler is completed;
when the separator is hoisted in the furnace, one of the winches is matched with the tower crane to lift the ultra-long starting separator to a set height, and then the multiple winches are used for hoisting the ultra-long starting separator to the proper position; after the tower crane lifts the ultra-long starting separator off the ground from a first set position, the ultra-long starting separator rotates until the axis of the ultra-long starting separator is along the radial direction of the boiler, then the ultra-long starting separator is lifted to a second set position, the direction of the ultra-long starting separator is adjusted, the ultra-long starting separator is horizontally close to the boiler between boiler steel frames, and one end of the ultra-long starting separator is supported on a temporary bracket of the boiler steel frames, so that the hoisting outside the boiler is completed.
2. The multi-machine matching hoisting method for the boiler ultra-long starting separator as claimed in claim 1, wherein after the tower crane hoists the ultra-long starting separator to a first set position off the ground, a braking test is performed first, and the tower crane is inspected.
3. The multi-machine matching hoisting method of the boiler ultra-long starting separator as claimed in claim 1, wherein in the hoisting process, the direction of the ultra-long starting separator is adjusted by using a sliding rope; when one end of the super-long starting separator crosses the axial center line of the outermost steel frame, the hook of the tower crane is slowly dropped, and one end of the super-long starting separator is supported on a temporary bracket of a boiler steel frame.
4. The method for multi-machine cooperative hoisting of the ultra-long starting separator of the boiler as claimed in claim 1, wherein during the hoisting in the boiler, one of the hoists is set as a main hoisting device, and the other hoists are auxiliary hoisting devices, so that the main hoisting device is hoisted at one end of the ultra-long starting separator, so that the tower crane is hoisted at a tower crane hoisting point at the other end, the ultra-long starting separator is hoisted by the main hoisting device, and the ultra-long starting separator is rotated by the tower crane in a cooperative manner, so that the ultra-long starting separator moves towards the furnace.
5. The method for multi-machine cooperative hoisting of the ultra-long starting separator of the boiler as claimed in claim 4, wherein when moving to the set point in the direction of the furnace, the ultra-long starting separator is lifted horizontally, and when the ultra-long starting separator is hoisted to the third set position, the tower crane stops hoisting, and when the ultra-long starting separator is hoisted by the main hoisting device to the fourth set position, the main hoisting device stops, and at this time, the ultra-long starting separator is in an inclined state.
6. The multi-machine cooperation hoisting method for the boiler ultra-long starting separator as claimed in claim 4, wherein when hoisting is performed by a plurality of hoists, the auxiliary hoisting device and the ultra-long starting separator are connected to the auxiliary hoisting point, the main hoisting device and the auxiliary hoisting device are simultaneously started to hoist the ultra-long starting separator, until the ultra-long starting separator is in a vertical state, the auxiliary hoisting device is stopped, and the main hoisting device alone hoists the upper end of the ultra-long starting separator to a fifth set position to hoist in place.
7. The multi-machine cooperation hoisting method for the boiler ultra-long starting separator as claimed in claim 6, wherein the hoisting point of the tower crane is a first set distance from the center of the ultra-long starting separator, the auxiliary hoisting point is a second set distance from the center of the ultra-long starting separator, and the first set distance is greater than the second set distance.
8. The multi-machine matching hoisting method of the boiler ultra-long starting separator as claimed in claim 1, wherein after the hoisting is completed, the chain hoist is used for adjustment, and the hoisting device is installed for mounting the ultra-long starting separator.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110730701.0A CN113526369B (en) | 2021-06-29 | 2021-06-29 | Multi-machine matching hoisting method for ultra-long starting separator of boiler |
| PCT/CN2021/119255 WO2023272960A1 (en) | 2021-06-29 | 2021-09-18 | Multi-machine cooperative hoisting method for super-long start-up separator of boiler |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110730701.0A CN113526369B (en) | 2021-06-29 | 2021-06-29 | Multi-machine matching hoisting method for ultra-long starting separator of boiler |
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| Publication Number | Publication Date |
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| CN113526369A CN113526369A (en) | 2021-10-22 |
| CN113526369B true CN113526369B (en) | 2022-12-09 |
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| CN202110730701.0A Active CN113526369B (en) | 2021-06-29 | 2021-06-29 | Multi-machine matching hoisting method for ultra-long starting separator of boiler |
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| WO (1) | WO2023272960A1 (en) |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102190254A (en) * | 2010-03-03 | 2011-09-21 | 五冶集团上海有限公司 | Hoisting method for equipment installation in in-between hollow space of multilayer concrete platforms |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20160009532A1 (en) * | 2014-07-14 | 2016-01-14 | John Bennette | Log lift and pulling apparatus for cooperation with log splitter |
| KR101831511B1 (en) * | 2016-02-26 | 2018-02-22 | 제네럴 일렉트릭 테크놀러지 게엠베하 | Carrying apparatus for hrsg |
| CN107514630B (en) * | 2017-08-11 | 2019-12-31 | 中国化学工程第六建设有限公司 | Complete set installation method for biomass high-temperature high-pressure circulating fluidized bed boiler |
| CN107572376A (en) * | 2017-10-16 | 2018-01-12 | 山东电力建设第工程公司 | Thermal power generation unit tower boiler lifting machine arrangement and hanging method |
| CN109266869B (en) * | 2018-10-28 | 2021-01-05 | 中国十九冶集团有限公司南京分公司 | Furnace cover upside-down mounting and furnace cover mounting process |
-
2021
- 2021-06-29 CN CN202110730701.0A patent/CN113526369B/en active Active
- 2021-09-18 WO PCT/CN2021/119255 patent/WO2023272960A1/en unknown
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102190254A (en) * | 2010-03-03 | 2011-09-21 | 五冶集团上海有限公司 | Hoisting method for equipment installation in in-between hollow space of multilayer concrete platforms |
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| WO2023272960A1 (en) | 2023-01-05 |
| CN113526369A (en) | 2021-10-22 |
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