CN110790147A - Hoisting method for super-long steam turbine generator - Google Patents
Hoisting method for super-long steam turbine generator Download PDFInfo
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- CN110790147A CN110790147A CN201910994848.3A CN201910994848A CN110790147A CN 110790147 A CN110790147 A CN 110790147A CN 201910994848 A CN201910994848 A CN 201910994848A CN 110790147 A CN110790147 A CN 110790147A
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- Prior art keywords
- hoisting
- steam turbine
- turbine generator
- pressure cylinder
- low
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66C—CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
- B66C17/00—Overhead travelling cranes comprising one or more substantially horizontal girders the ends of which are directly supported by wheels or rollers running on tracks carried by spaced supports
- B66C17/06—Overhead travelling cranes comprising one or more substantially horizontal girders the ends of which are directly supported by wheels or rollers running on tracks carried by spaced supports specially adapted for particular purposes, e.g. in foundries, forges; combined with auxiliary apparatus serving particular purposes
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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
- B66C17/00—Overhead travelling cranes comprising one or more substantially horizontal girders the ends of which are directly supported by wheels or rollers running on tracks carried by spaced supports
- B66C17/04—Overhead travelling cranes comprising one or more substantially horizontal girders the ends of which are directly supported by wheels or rollers running on tracks carried by spaced supports with lifting beams, e.g. slewable beams, carrying load-engaging elements, e.g. magnets, hooks
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01D—NON-POSITIVE DISPLACEMENT MACHINES OR ENGINES, e.g. STEAM TURBINES
- F01D25/00—Component parts, details, or accessories, not provided for in, or of interest apart from, other groups
- F01D25/28—Supporting or mounting arrangements, e.g. for turbine casing
Abstract
The invention discloses a hoisting method of an ultra-long steam turbine generator, which solves the problem that the ultra-long steam turbine generator unit cannot be effectively hoisted in the prior art and can stably and efficiently realize hoisting of the ultra-long steam turbine generator unit. The technical scheme is as follows: the method comprises the following steps: fixing the hoisting balance beam and the ultrahigh pressure cylinder module, and hoisting the balance beam in place by hoisting the balance beam by two bridge cranes; hoisting the high-pressure cylinder module and the intermediate-pressure cylinder module in place sequentially through a bridge crane; hoisting the hoisting balance beam through a hydraulic hoisting device, and hoisting the generator stator in place; after the outer cylinders of the low-pressure cylinder are combined and welded, hoisting the inner and lower cylinders of the low-pressure cylinder by using a bridge crane, and aligning the inner partition plate and the through-flow gap by arranging the inner and lower cylinders on the bearing seats at two ends; and (4) positioning all the low-pressure cylinders, positioning the rotor by using the balance beam after the shafting alignment is finished, and then lifting the low-pressure upper inner cylinder and the low-pressure upper outer cylinder by using a bridge crane to position.
Description
Technical Field
The invention relates to the technical field of equipment hoisting, in particular to a hoisting method of an ultralong steam turbine generator.
Background
In the installation process of the steam turbine generator unit body, the hoisting of the large-scale body equipment in the initial stage is a very critical link, the hoisting operability and the hoisting auxiliary tool are selected, the hoisting safety and the construction period of the whole steam turbine generator body are directly affected, and the hoisting work in place of the large-scale equipment of the steam turbine generator body can be safely and quickly completed only by selecting hoisting machines and schemes which are high in safety and operability and more convenient to use.
The inventor finds that most of the 1000MW steam turbine generator units in China at present are composed of 4 cylinders or 5 cylinders and are hoisted by using a crane and other hoisting machinery. For a 1000MW steam turbine generator unit consisting of 6 cylinders, the length of a shaft system exceeds that of a similar unit, and the workload is increased for hoisting operation. The existing hoisting method can not realize stable and efficient hoisting.
Disclosure of Invention
In order to overcome the defects of the prior art, the invention provides the hoisting method of the ultralong steam turbine generator, which can stably and efficiently realize hoisting of the ultralong steam turbine generator unit, and has the advantages of simple operation, convenient use and low cost.
The invention adopts the following technical scheme:
a hoisting method of an ultra-long steam turbine generator comprises the following steps:
fixing a hoisting balance beam and an ultrahigh pressure cylinder module, and hoisting the ultrahigh pressure cylinder module in place by hoisting the hoisting balance beam by two bridge cranes;
step (2) hoisting the high-pressure cylinder module and the intermediate-pressure cylinder module in place sequentially through the bridge crane;
hoisting the hoisting balance beam through a hydraulic hoisting device, hanging the hoisting balance beam on the generator stator through a hoisting rigging, and hoisting the generator stator in place;
after the combination and welding of the outer cylinder of the low-pressure cylinder are finished, hoisting the inner and lower cylinders of the low-pressure cylinder by using a bridge crane, placing the lower cylinder on bearing seats at two ends through bearing bearings, and then aligning an inner partition plate and a through-flow gap;
and (5) positioning all the low-pressure cylinders by adopting the method in the step (4), positioning the rotor by using the balance beam after the shafting alignment is finished, and then lifting the low-pressure upper inner cylinder and the low-pressure upper outer cylinder by using a bridge crane.
Further, in the step (1), the two bridge cranes are kept synchronous in the hoisting process.
Further, in the step (1), when the high-pressure cylinder module is in place, the cat claws of the high-pressure cylinder module are stably installed on the bearing seats at the two ends, and the axial center position is determined by using an auxiliary tool while the hook is dropped.
Further, in the step (3), the hydraulic lifting device is installed at the center of the two bridge crane turbonators.
Further, in the step (3), in the hoisting process of the generator stator, the jacking cat claws are jacked uniformly.
Further, in the step (4), the low-pressure cylinder outer cylinder starts to be hoisted and combined after the installation and acceptance of the condenser shell and the supporting tube.
Further, in the step (4), the internal partition plate and the through-flow gap are aligned in a piano wire alignment mode.
Further, in the step (4), the balance beam is a balance beam special for a low-pressure cylinder rotor.
Further, the bridge crane adopts 130/35t bridge crane.
Compared with the prior art, the invention has the beneficial effects that:
(1) according to the invention, the bridge crane is selected according to the weight of the large-scale equipment of the turbonator body, and the balance beam, the hydraulic lifting device and the matched hoisting rigging are adopted, so that the used equipment is safe to use;
(2) the invention has the advantages of simple operation, convenient use, high hoisting efficiency and low cost, and ensures the safety and stability of the construction process.
Detailed Description
It should be noted that the following detailed description is exemplary and is intended to provide further explanation of the disclosure. 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 application belongs.
It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of example embodiments according to the present application. As used herein, the singular forms "a", "an", and/or "the" are intended to include the plural forms as well, and it should be understood that when the terms "comprises" and/or "comprising" are used in this specification, they specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof;
for convenience of description, the words "up", "down", "left" and "right" in this application, if any, merely indicate that the directions are consistent with the respective up, down, left and right directions, and do not limit the structure, but merely facilitate the description of the invention and simplify the description, rather than indicate or imply that the referenced device or element must have a particular orientation, be constructed and operated in a particular orientation, and thus should not be construed as limiting the application.
The terms "mounted", "connected", "fixed", and the like in the present application should be understood broadly, and for example, the terms "mounted", "connected", and "fixed" may be fixedly connected, detachably connected, or integrated; the two components can be connected mechanically or electrically, directly or indirectly through an intermediate medium, or connected internally or in an interaction relationship, and the terms used in the present invention should be understood as having specific meanings to those skilled in the art.
As introduced in the background art, the invention provides a hoisting method for an ultra-long steam turbine generator unit, aiming at solving the technical problems that the conventional hoisting method cannot effectively hoist the ultra-long steam turbine generator unit.
The first embodiment is as follows:
the present invention is described in detail below, specifically, the structure is as follows:
at present, a 1000MW steam turbine generator unit is composed of 4 cylinders or 5 cylinders and is hoisted by using a travelling crane and other hoisting machinery. The embodiment provides a hoisting method of an ultra-long steam turbine generator, which is formed by 6 cylinders aiming at a 1000MW steam turbine generator unit, and the length of a shaft system exceeds that of a similar unit, so that the workload is increased for hoisting operation.
In the installation process of the steam turbine generator unit body, the hoisting of the large-scale body equipment in the initial stage is a very critical link, the hoisting operability and the hoisting auxiliary tool are selected, the hoisting safety and the construction period of the whole steam turbine generator body are directly affected, and the hoisting work in place of the large-scale equipment of the steam turbine generator body can be safely and quickly completed only by selecting hoisting machines and schemes which are high in safety and operability and more convenient to use.
And formulating a matching scheme of the bridge crane and a module selection scheme of the hydraulic lifting device according to the weight of the large-scale equipment of the turbonator body. In this example, 130/35t bridge crane was selected.
Firstly, the ultrahigh pressure cylinder module is connected with a hoisting balance beam, the hoisting balance beam is hoisted by two 130/35t bridge cranes, and the ultrahigh pressure cylinder module is hoisted in place. In the hoisting process, the synchronism of the two bridge cranes is kept; when the high-pressure cylinder module is in place, the cat claws of the high-pressure cylinder module are stably arranged on the bearing seats at two ends, and the axial center position is determined by using an auxiliary tool while the hook is dropped; and hoisting the high-pressure cylinder module and the intermediate-pressure cylinder module in place by the same method.
Then hoisting the generator stator, and hoisting the balance beam by a hydraulic hoisting device at the center of the two 130/35t bridge crane turbine generators; the hydraulic lifting device is a hydraulic lifting device special for bridge installation in the prior art, and the balance beam is a balance beam special for a low-pressure cylinder rotor in the prior art. And then, hanging the hoisting balance beam on the generator stator through a hoisting rigging, and hoisting and positioning the generator stator.
In the hoisting process, the jacking cat claws jack uniformly, and are operated by professionals in the whole process, so that the lifting process is stable and uniform. The outer cylinder of the low-pressure cylinder starts to be hoisted and combined after the condenser shell and the supporting tube are installed and accepted, after the combination and the welding are completed, the lower cylinder in the low-pressure cylinder is hoisted by using a bridge crane and stands on bearing seats at two ends through two bearing bearings, and the inner partition plate and the through-flow gap are aligned by using alignment modes such as piano steel wires.
And the three low-pressure cylinders are positioned by using the same method, after the shafting alignment is finished, the special balance beam for the low-pressure cylinder rotor is used for positioning the rotor, and then the bridge crane is used for hoisting the low-pressure upper inner cylinder and the low-pressure upper outer cylinder in position.
In the embodiment, the balance beam, the hydraulic lifting device and the matched hoisting rigging are adopted, so that the safety and stability of the construction process are ensured; and the method has simple operation, convenient use and low cost.
The above description is only a preferred embodiment of the present application and is not intended to limit the present application, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, improvement and the like made within the spirit and principle of the present application shall be included in the protection scope of the present application.
Claims (9)
1. A hoisting method of an ultra-long steam turbine generator is characterized by comprising the following steps:
fixing a hoisting balance beam and an ultrahigh pressure cylinder module, and hoisting the ultrahigh pressure cylinder module in place by hoisting the hoisting balance beam by two bridge cranes;
step (2) hoisting the high-pressure cylinder module and the intermediate-pressure cylinder module in place sequentially through the bridge crane;
hoisting the hoisting balance beam through a hydraulic hoisting device, hanging the hoisting balance beam on the generator stator through a hoisting rigging, and hoisting the generator stator in place;
after the combination and welding of the outer cylinder of the low-pressure cylinder are finished, hoisting the inner and lower cylinders of the low-pressure cylinder by using a bridge crane, placing the lower cylinder on bearing seats at two ends through bearing bearings, and then aligning an inner partition plate and a through-flow gap;
and (5) positioning all the low-pressure cylinders by adopting the method in the step (4), positioning the rotor by using the balance beam after the shafting alignment is finished, and then lifting the low-pressure upper inner cylinder and the low-pressure upper outer cylinder by using a bridge crane.
2. The hoisting method of the ultra-long steam turbine generator according to claim 1, wherein in the step (1), the two bridge cranes are kept synchronous in the hoisting process.
3. The hoisting method for the super-long steam turbine generator as claimed in claim 1, wherein in the step (1), the cat claws of the high-pressure cylinder module are smoothly installed on the bearing seats at the two ends when in place, and the axial center position is determined by using an auxiliary tool while the hook is dropped.
4. The hoisting method for the super-long steam turbine generator as claimed in claim 1, wherein in the step (3), the hydraulic lifting device is installed at the center of the two bridge crane steam turbine generators.
5. The hoisting method of the super-long steam turbine generator according to claim 1, wherein in the step (3), the jacking cat claws jack uniformly in the hoisting process of the generator stator.
6. The hoisting method of the ultra-long steam turbine generator as claimed in claim 1, wherein in the step (4), the hoisting and the assembling of the low-pressure cylinder outer cylinder are started after the installation and acceptance of the condenser shell and the support tube.
7. The hoisting method for the super-long steam turbine generator according to claim 1, wherein in the step (4), the internal partition plates and the through-flow gaps are aligned by a piano wire alignment method.
8. The hoisting method for the ultra-long steam turbine generator as claimed in claim 1, wherein in the step (4), the balance beam is a balance beam special for a low-pressure cylinder rotor.
9. The hoisting method of the super-long steam turbine generator as claimed in claim 1, wherein the bridge crane is 130/35t bridge crane.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910994848.3A CN110790147B (en) | 2019-10-18 | 2019-10-18 | Hoisting method for super-long steam turbine generator |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910994848.3A CN110790147B (en) | 2019-10-18 | 2019-10-18 | Hoisting method for super-long steam turbine generator |
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| CN110790147A true CN110790147A (en) | 2020-02-14 |
| CN110790147B CN110790147B (en) | 2021-10-01 |
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| CN201910994848.3A Active CN110790147B (en) | 2019-10-18 | 2019-10-18 | Hoisting method for super-long steam turbine generator |
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Cited By (2)
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| CN111490649A (en) * | 2020-04-22 | 2020-08-04 | 中国能源建设集团天津电力建设有限公司 | Installation method of 660 MW-level double-water internal cooling generator |
| CN111573539A (en) * | 2020-05-31 | 2020-08-25 | 嘉兴学院 | Hoisting device for super-long steam turbine generator |
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Cited By (3)
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| CN110790147B (en) | 2021-10-01 |
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Inventor after: Zhang Hongmei Inventor after: Liu Chao Inventor after: Zhang Chongyang Inventor after: Liu Jianyi Inventor after: Tian Yunxuan Inventor after: Li Guangjun Inventor after: Wang Gang Inventor before: Liu Chao Inventor before: Zhang Chongyang Inventor before: Liu Jianyi Inventor before: Tian Yunxuan Inventor before: Li Guangjun Inventor before: Wang Gang |
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