CN109484974B - Method for mounting axial-flow propeller turbine - Google Patents
Method for mounting axial-flow propeller turbine Download PDFInfo
- Publication number
- CN109484974B CN109484974B CN201811384638.4A CN201811384638A CN109484974B CN 109484974 B CN109484974 B CN 109484974B CN 201811384638 A CN201811384638 A CN 201811384638A CN 109484974 B CN109484974 B CN 109484974B
- Authority
- CN
- China
- Prior art keywords
- main shaft
- water turbine
- cover
- rotating wheel
- bolt
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Classifications
-
- 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
-
- 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
- B66C1/12—Slings comprising chains, wires, ropes, or bands; Nets
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66D—CAPSTANS; WINCHES; TACKLES, e.g. PULLEY BLOCKS; HOISTS
- B66D1/00—Rope, cable, or chain winding mechanisms; Capstans
- B66D1/02—Driving gear
- B66D1/04—Driving gear manually operated
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F03—MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
- F03B—MACHINES OR ENGINES FOR LIQUIDS
- F03B11/00—Parts or details not provided for in, or of interest apart from, the preceding groups, e.g. wear-protection couplings, between turbine and generator
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/20—Hydro energy
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- General Engineering & Computer Science (AREA)
- Hydraulic Turbines (AREA)
Abstract
The invention discloses an installation method of an axial-flow propeller turbine, which adopts a three-body combined hoisting mode of an axial-flow propeller turbine runner, a support cover and a turbine main shaft, and is characterized in that the support cover is placed down after a bolt and a nut of the turbine main shaft are installed in the original process, the support cover is placed down instead of the support cover, and then the bolt and the nut of the turbine main shaft are installed, so that the lifting and placing heights of the support cover and the hanging time on the turbine main shaft are greatly reduced, the damage of a steel wire rope is prevented, the distraction of installation personnel due to fatigue is avoided, the safety risk is effectively reduced, the installation work efficiency is also improved, and the installation time period is shortened.
Description
Technical Field
The invention belongs to the technical field of hydropower, and particularly relates to an installation method of an axial-flow Kaplan turbine.
Background
The river water power resources such as Jinshajiang river, big river of southwest of Sichuan are abundant, there are many hydropower stations built, such as the sub-hydropower station of copper street of big river of:
1. vertically installing a main shaft of the water turbine on a specified foundation plate of an installation room, and positioning the main shaft by using a foundation bolt to prevent the main shaft from toppling;
2. lifting the support cover, sleeving the support cover to a main shaft of the water turbine from the middle, and placing the support cover on the ground of the installation room;
3. mounting a support ring and a hoisting ring on the flange surface at the upper end of the main shaft of the water turbine, and fastening the support ring by using a hoisting bolt, wherein 8 chain block hanging points are arranged on the support ring;
4. hanging 8 chain blocks on the hanging points of the chain blocks on the support ring, sleeving steel wire ropes on 8 hoisting holes in the support cover, and cushioning flexible pads at the joint parts of the steel wire ropes and the hoisting holes of the support cover to prevent the steel wire ropes from being cut, wherein hooks of the 8 chain blocks respectively hang the steel wire ropes of the corresponding hoisting holes;
5. manually and synchronously pulling 8 chain blocks, lifting the support cover to be 1.35m away from the ground, and providing enough space height for subsequently assembling a main shaft bolt nut of the water turbine;
6. mounting a main shaft bolt of the water turbine on the top end of the runner flange, then hanging a lifting shaft on a main shaft of the water turbine by using a machine room bridge crane, integrally lifting the main shaft of the water turbine together with a supporting cover to the position above the runner, and accurately aligning the main shaft of the water turbine and the runner;
7. the main shaft and the supporting cover of the water turbine are integrally dropped, so that a main shaft bolt of the water turbine on the runner flange penetrates through a bolt hole on the main shaft flange of the water turbine, then a nut of the main shaft bolt of the water turbine is screwed into the main shaft bolt of the water turbine, the bolt is symmetrically stretched to a specified stretching amount by using a hydraulic stretcher, and the nut is tightened;
8. manually and synchronously pulling 8 chain blocks, lowering the support cover by 1.75m, dropping the support cover onto a suspension clamp ring on a cylinder cover of the rotating wheel, putting a suspension clamp ring bolt into the support cover, and combining the bolt with the suspension clamp ring by using a pneumatic trigger to connect the support cover with the suspension clamp ring;
9. and (3) hanging a lifting shaft on the main shaft of the water turbine by using a machine room bridge crane, integrally lifting the rotating wheel, the main shaft of the water turbine and the supporting cover into a foundation pit of the unit, and completely finishing the three-body combined lifting work.
However, in the actual installation process, the steel wire rope at the installation hole of the supporting cover is partially broken and stranded, which brings great safety risk to the installation work, and 2 steel wire ropes in the installation process of 4 machine sets have the phenomena, and all the steel wire ropes are in the lowering process of the supporting cover, which has to doubte the rationality of the installation process.
Disclosure of Invention
In order to reduce the safety risk of the installation of the axial flow Kaplan turbine and ensure the equipment and personal safety, the reasons for causing the problems are firstly analyzed:
1. the height of the hand chain block lifting support cover reaches 1.35m (the height required by assembling a water turbine main shaft bolt nut), the opening angle of the steel wire rope is very large, the edge of the lifting hole edge of the support cover is seriously gnawed, the flexible pad is damaged and fails, and the steel wire rope directly rubs against the edge of the lifting hole, so that the steel wire rope is a direct reason for breaking or strand breaking of the steel wire rope.
2. Support the lid and promote, transfer the in-process, though adopt "unified commander, synchronous transfer" mode, operating personnel is too much, and 2 people of 1 calabash, 8 calabashes are 16 people altogether, hardly accomplish real synchronization, and the wire rope atress of each calabash is uneven, and the easy of atress is big is impaired.
3. The supporting cover is lifted from the beginning to be put in place, the interval time is too long (about 3 hours of lifting, more than about 36 hours of suspending and about 2 hours of putting, totally more than 40 hours), the steel wire rope is tired and easy to damage, the installer is also easy to fatigue and distract, and the operation of the hoist is asynchronous.
According to the above analysis, the following technical scheme of the installation process is proposed:
an axial flow propeller turbine mounting method adopts an axial flow propeller turbine runner, a support cover and a turbine main shaft three-body combined hoisting mode, and comprises the following steps:
(1) the nut of the main shaft bolt of the water turbine, the suspension clamp ring bolt and the hydraulic stretcher are hoisted into the support cover in advance and are arranged at the bottom of the support cover;
(2) vertically installing a main shaft of the water turbine on a specified foundation plate of an installation room, and positioning the main shaft by using a foundation bolt to prevent the main shaft from toppling;
(3) lifting the support cover, sleeving the support cover into a main shaft of the water turbine, and continuously descending until the support cover is placed on the ground of the installation room;
(4) mounting a support ring and a hoisting ring on the flange surface at the upper end of the main shaft of the water turbine, and fastening the support ring and the hoisting ring by using hoisting bolts; the support ring is provided with 8 chain block hanging points which are uniformly distributed in the circumferential direction;
(5) hanging 8 chain blocks on the hanging points of the chain blocks on the support ring, hanging steel wire ropes in the hoisting holes in the support covers corresponding to the 8 chain blocks respectively, and welding semicircular steel tubes at the joint parts of the steel wire ropes and the hoisting holes of the support covers to prevent the steel wire ropes from being cut in the hoisting process; the hook of each chain block respectively hooks the corresponding steel wire rope;
(6) manually and synchronously pulling 8 chain blocks, lifting the support cover away from the ground, wherein the height from the ground is about 0.01m, and the gap is formed, and at the moment, the support cover is hung on a main shaft of the water turbine through the 8 chain blocks and is in a suspended state;
(7) the blade of the rotating wheel is adjusted to a fully closed position, a limiting block is welded at the water inlet edge of the blade to prevent the blade from rotating, and the blade supporting rod is used for supporting and limiting the side surface of the blade to ensure the stability of the integral rotating wheel;
(8) installing a split type suspension snap ring in a clamping ring groove reserved on a runner cylinder cover, checking whether the suspension snap ring is flexible in the clamping ring groove, and installing a water turbine spindle bolt at the top end of a runner flange;
(9) a hoisting shaft on a main shaft of the water turbine is hung and installed through a machine room bridge crane, the main shaft of the water turbine and a supporting cover are integrally hoisted to be hoisted above the rotating wheel, and the main shaft of the water turbine is aligned with the rotating wheel;
(10) after the main shaft of the water turbine is accurately aligned with the rotating wheel, the main shaft of the water turbine and the supporting cover are integrally dropped, so that a main shaft bolt of the water turbine on the rotating wheel flange penetrates into a bolt hole on the main shaft flange of the water turbine;
(11) manually and synchronously pulling 8 chain blocks, lowering the supporting cover by 0.4m, dropping the supporting cover onto a suspension clamp ring on a cylinder cover of the rotating wheel, and closing a suspension clamp ring bolt which is placed in the supporting cover in advance by using a pneumatic trigger to connect the supporting cover and the suspension clamp ring;
(12) screwing a nut of a main shaft bolt of the water turbine, which is placed in the support cover in advance, into the main shaft bolt of the water turbine in the support cover, symmetrically using a hydraulic stretcher to stretch the main shaft bolt of the water turbine to a specified stretching amount, tightening the nut, tightening all the nuts by the method, and using a 0.05m feeler gauge to check that the main shaft of the water turbine and the flange surface of the rotating wheel are gapless and can not pass through;
(13) dismantling scaffolds and blade brace rods around the rotating wheels;
(14) the rotating wheel, the main shaft of the water turbine and the supporting cover are integrally lifted to a foundation pit of the unit through a lifting shaft on the main shaft of the water turbine hung by a machine room bridge crane, and thus, the three-body combined lifting work is completely finished.
And (9) aligning the main shaft of the water turbine with the rotating wheel, and selecting one of the following two specific schemes:
A. before the main shaft of the water turbine is erected, firstly hoisting the main shaft of the water turbine above the rotating wheel, accurately aligning the main shaft of the water turbine with the rotating wheel, then hoisting the rotating wheel out, vertically installing the main shaft of the water turbine on a specified foundation plate of an installation room according to the step (2) under the condition that the main shaft of the water turbine is not rotated, and marking; when the main shaft of the water turbine is hoisted formally, the main shaft of the water turbine is hoisted according to the position of the preassembly mark, and is controlled not to rotate, so that the accurate alignment is ensured;
B. 2 lifting lugs are welded at the lower end of the supporting cover in the symmetrical direction in advance, ropes are sleeved on the lifting lugs respectively, the ropes are pulled manually to enable the main shaft of the water turbine to rotate, personnel need to enter the supporting cover, the alignment condition is observed, the personnel outside the supporting cover are instructed to pull the ropes, and the main shaft of the water turbine and the rotating wheel are aligned accurately.
The invention has the beneficial technical effects that:
by adopting the installation process, the lifting time, the lowering time and the hanging time of the support cover on the main shaft of the water turbine are greatly reduced, the lifting height is reduced to 0.01m from 1.35m, the lowering time is reduced to 0.4m from 1.75m, the lifting time is reduced to 1 hour from 3 hours, the lowering time is reduced to 0.5 hour from 2 hours, the total suspension time is reduced to 12 hours from 36 hours, the phenomenon that an installer is distracted due to fatigue is avoided, the safety risk is effectively reduced, the installation work efficiency is also improved, and the installation time period is shortened.
Drawings
Fig. 1 is a comparison view of the support lid lifting height, in which: (a) is a process diagram of the lifting height of the original support cover; (b) is a process diagram of the present support lid lift height.
Fig. 2 is a comparison of the spatial positions when the spindle bolt and nut of the turbine are installed, in which: (a) is a process diagram of the space position of the original water turbine main shaft bolt and nut (the water turbine bolt is fastened on the runner scaffold); (b) is a technical diagram of the space position of the water turbine main shaft bolt nut (fastening is carried out in the water turbine bolt supporting cover).
Detailed Description
The invention will be described in detail below by taking the installation of a water turbine in a copper street hydropower station as an example.
The water turbine of the copper street hydropower station is of a vertical axial-flow propeller type structure, and the diameter of a runner is 8.5 m. The three-body combined hoisting of the water turbine adopts a special hoisting tool to integrally hoist the rotating wheel, the supporting cover and the main shaft of the water turbine into the machine pit, and the total hoisting weight is about 490.2 t. The main components and the total amount of the integral hoisting of the water turbine are shown in the table 1.
TABLE 1 weight table for hoisting parts of water turbine
According to the design of a unit supplier east electrical machinery factory, the hoisting mode of the water turbine is a three-body combined hoisting mode of a rotating wheel, a supporting cover and a water turbine main shaft. The specific steps are already described in the background art, the technical difficulty is in the lifting and descending operation of the support cover, the support cover is the part with the largest weight, the weight is up to 95.5t, the support cover is hung on a main shaft of the water turbine through a chain block and a steel wire rope, the support cover is lifted by the chain block and is arranged below the chain block, the steel wire rope is easy to break or strand, and the support cover becomes a serious potential safety hazard. After analyzing the cause of the potential safety hazard, the installation process is modified as described in detail below.
The method for installing the axial-flow Kaplan turbine adopts a three-body combined hoisting mode of the axial-flow Kaplan runner, the supporting cover and the main shaft of the turbine, and comprises the following steps:
(1) the nut of the main shaft bolt of the water turbine, the suspension clamp ring bolt and the hydraulic stretcher are hoisted into the support cover in advance and are arranged at the bottom of the support cover;
(2) vertically installing a main shaft of the water turbine on a specified foundation plate of an installation room, and positioning the main shaft by using a foundation bolt to prevent the main shaft from toppling;
(3) lifting the support cover, sleeving the support cover into a main shaft of the water turbine, and continuously descending until the support cover is placed on the ground of the installation room;
(4) mounting a support ring and a hoisting ring on the flange surface at the upper end of the main shaft of the water turbine, and fastening the support ring and the hoisting ring by using hoisting bolts; the support ring is provided with 8 chain block hanging points which are uniformly distributed in the circumferential direction;
(5) hanging 8 chain blocks on the hanging points of the chain blocks on the support ring, hanging steel wire ropes in the hoisting holes in the support covers corresponding to the 8 chain blocks respectively, and welding semicircular steel tubes at the joint parts of the steel wire ropes and the hoisting holes of the support covers to prevent the steel wire ropes from being cut in the hoisting process; the hook of each chain block respectively hooks the corresponding steel wire rope;
(6) manually and synchronously pulling 8 chain blocks, lifting the support cover away from the ground, wherein the height from the ground is about 0.01m, and the gap is formed, and at the moment, the support cover is hung on a main shaft of the water turbine through the 8 chain blocks and is in a suspended state;
(7) the blade of the rotating wheel is adjusted to a fully closed position, a limiting block is welded at the water inlet edge of the blade to prevent the blade from rotating, and the blade supporting rod is used for supporting and limiting the side surface of the blade to ensure the stability of the integral rotating wheel;
(8) installing a split type suspension snap ring in a clamping ring groove reserved on a runner cylinder cover, checking whether the suspension snap ring is flexible in the clamping ring groove, and installing a water turbine spindle bolt at the top end of a runner flange;
(9) a hoisting shaft on a main shaft of the water turbine is hung and installed through a machine room bridge crane, the main shaft of the water turbine and a supporting cover are integrally hoisted to be hoisted above the rotating wheel, and the main shaft of the water turbine is aligned with the rotating wheel;
(10) after the main shaft of the water turbine is accurately aligned with the rotating wheel, the main shaft of the water turbine and the supporting cover are integrally dropped, so that a main shaft bolt of the water turbine on the rotating wheel flange penetrates into a bolt hole on the main shaft flange of the water turbine;
(11) manually and synchronously pulling 8 chain blocks, lowering the supporting cover by 0.4m, dropping the supporting cover onto a suspension clamp ring on a cylinder cover of the rotating wheel, and closing a suspension clamp ring bolt which is placed in the supporting cover in advance by using a pneumatic trigger to connect the supporting cover and the suspension clamp ring;
(12) screwing a nut of a main shaft bolt of the water turbine, which is placed in the support cover in advance, into the main shaft bolt of the water turbine in the support cover, symmetrically using a hydraulic stretcher to stretch the main shaft bolt of the water turbine to a specified stretching amount, tightening the nut, tightening all the nuts by the method, and using a 0.05m feeler gauge to check that the main shaft of the water turbine and the flange surface of the rotating wheel are gapless and can not pass through;
(13) dismantling scaffolds and blade brace rods around the rotating wheels;
(14) the rotating wheel, the main shaft of the water turbine and the supporting cover are integrally lifted to a foundation pit of the unit through a lifting shaft on the main shaft of the water turbine hung by a machine room bridge crane, and thus, the three-body combined lifting work is completely finished.
And (9) aligning the main shaft of the water turbine with the rotating wheel, and selecting one of the following two specific schemes:
A. before the main shaft of the water turbine is erected, firstly hoisting the main shaft of the water turbine above the rotating wheel, accurately aligning the main shaft of the water turbine with the rotating wheel, then hoisting the rotating wheel out, vertically installing the main shaft of the water turbine on a specified foundation plate of an installation room according to the step (2) under the condition that the main shaft of the water turbine is not rotated, and marking; when the main shaft of the water turbine is hoisted formally, the main shaft of the water turbine is hoisted according to the position of the preassembly mark, and is controlled not to rotate, so that the accurate alignment is ensured;
B. 2 lifting lugs are welded at the lower end of the supporting cover in the symmetrical direction in advance, ropes are sleeved on the lifting lugs respectively, the ropes are pulled manually to enable the main shaft of the water turbine to rotate, personnel need to enter the supporting cover, the alignment condition is observed, the personnel outside the supporting cover are instructed to pull the ropes, and the main shaft of the water turbine and the rotating wheel are aligned accurately.
In addition, the process is improved as follows:
A. the diameter of the steel wire rope is increased from phi 28mm to phi 36 mm;
B. the load specification of the chain block is increased from 20t to 30 t.
It can be seen that the main difference between the installation process and the original process is that the sequence of the steps of assembling the main shaft bolt nut of the water turbine and lowering the support cover is different.
See fig. 1 ((a), (b)), fig. 2 ((a), (b)):
the original process (see fig. 1 (a) and fig. 2 (a)) is that the support cover is placed downwards after the water turbine main shaft bolt nut is installed, and the water turbine main shaft bolt nut installation process has the advantages that the water turbine main shaft bolt nut installation environment condition is good, installation personnel can operate the water turbine main shaft bolt nut only by standing on a scaffold, the operation is very convenient, and the defects that the support cover is large in lifting and placing height, long in hanging time on a water turbine main shaft and becomes a main factor of potential safety hazards are overcome.
The process (see fig. 1 (b) and fig. 2 (b)) is to mount the water turbine spindle bolt nut after the support cover is lowered, and has the advantages that the lifting height and the lowering height of the support cover and the suspension time on the water turbine spindle are greatly reduced, the safety risk is effectively reduced, the water turbine spindle bolt nut is mounted in the support cover, an installer needs to enter the support cover for operation, the space environment is limited, and the operation difficulty is high.
Adopt this installation technology, the promotion of support cover has been reduced by a wide margin, transfer the height and the time of hanging on the hydraulic turbine main shaft, it is 0.01m to drop by 1.35m to promote the height, it is 0.4m to drop by 1.75m to transfer the height, it is 1 hour to drop by 3 hours to promote the time, it is 0.5 hour to transfer the time to drop by 2 hours, total unsettled time is reduced to 12 hours by 36 hours, prevent that wire rope is impaired, avoid installer because of tired spiritual distraction, not only reduced the safety risk effectively, installation work efficiency has also been improved, the installation time cycle has been shortened.
Claims (2)
1. An axial flow propeller turbine mounting method adopts an axial flow propeller turbine runner, a support cover and a turbine main shaft three-body combined hoisting mode, and comprises the following steps:
(1) a nut of a main shaft bolt of the water turbine, a suspension clamp ring bolt and a hydraulic stretcher are hung in the support cover in advance and are arranged at the bottom of the support cover;
(2) vertically installing a main shaft of the water turbine on a specified foundation plate of an installation room, and positioning the main shaft by using a foundation bolt to prevent the main shaft from toppling;
(3) lifting the support cover, sleeving the support cover into a main shaft of the water turbine, and continuously descending until the support cover is placed on the ground of the installation room;
(4) mounting a support ring and a hoisting ring on the flange surface at the upper end of the main shaft of the water turbine, and fastening the support ring and the hoisting ring by using hoisting bolts; the support ring is provided with 8 chain block hanging points which are uniformly distributed in the circumferential direction;
(5) hanging 8 chain blocks on the hanging points of the chain blocks on the support ring, hanging steel wire ropes in the hoisting holes in the support covers corresponding to the 8 chain blocks respectively, and welding semicircular steel tubes at the joint parts of the steel wire ropes and the hoisting holes of the support covers to prevent the steel wire ropes from being cut in the hoisting process; the hook of each chain block respectively hooks the corresponding steel wire rope;
(6) manually and synchronously pulling 8 chain blocks, lifting the support cover away from the ground, wherein the height from the ground is about 0.01m, and the gap is formed, and at the moment, the support cover is hung on a main shaft of the water turbine through the 8 chain blocks and is in a suspended state;
(7) the blade of the rotating wheel is adjusted to a fully closed position, a limiting block is welded at the water inlet edge of the blade to prevent the blade from rotating, and the blade supporting rod is used for supporting and limiting the side surface of the blade to ensure the stability of the integral rotating wheel;
(8) installing a split type suspension snap ring in a clamping ring groove reserved on a runner cylinder cover, checking whether the suspension snap ring is flexible in the clamping ring groove, and installing a water turbine spindle bolt at the top end of a runner flange;
(9) a hoisting shaft on a main shaft of the water turbine is hung and installed through a machine room bridge crane, the main shaft of the water turbine and a supporting cover are integrally hoisted to be hoisted above the rotating wheel, and the main shaft of the water turbine is aligned with the rotating wheel;
(10) after the main shaft of the water turbine is accurately aligned with the rotating wheel, the main shaft of the water turbine and the supporting cover are integrally dropped, so that a main shaft bolt of the water turbine on the rotating wheel flange penetrates into a bolt hole on the main shaft flange of the water turbine;
(11) manually and synchronously pulling 8 chain blocks, lowering the supporting cover by 0.4m, dropping the supporting cover onto a suspension clamp ring on a cylinder cover of the rotating wheel, and closing a suspension clamp ring bolt which is placed in the supporting cover in advance by using a pneumatic trigger to connect the supporting cover and the suspension clamp ring;
(12) screwing a nut of a main shaft bolt of the water turbine, which is placed in the support cover in advance, into the main shaft bolt of the water turbine in the support cover, symmetrically using a hydraulic stretcher to stretch the main shaft bolt of the water turbine to a specified stretching amount, tightening the nut, tightening all the nuts by the method, and using a 0.05m feeler gauge to check that the main shaft of the water turbine and the flange surface of the rotating wheel are gapless and can not pass through;
(13) dismantling scaffolds and blade brace rods around the rotating wheels;
(14) the rotating wheel, the main shaft of the water turbine and the supporting cover are integrally lifted to a foundation pit of the unit through a lifting shaft on the main shaft of the water turbine hung by a machine room bridge crane, and thus, the three-body combined lifting work is completely finished.
2. The method for installing an axial flow Kaplan turbine as claimed in claim 1, wherein in the step (9), the main shaft of the turbine is aligned with the runner, and the following two specific schemes are selected alternatively:
A. before the main shaft of the water turbine is erected, firstly hoisting the main shaft of the water turbine above the rotating wheel, accurately aligning the main shaft of the water turbine with the rotating wheel, then hoisting the rotating wheel out, vertically installing the main shaft of the water turbine on a specified foundation plate of an installation room according to the step (2) under the condition that the main shaft of the water turbine is not rotated, and marking; when the main shaft of the water turbine is hoisted formally, the main shaft of the water turbine is hoisted according to the position of the preassembly mark, and is controlled not to rotate, so that the accurate alignment is ensured;
B. 2 lifting lugs are welded at the lower end of the supporting cover in the symmetrical direction in advance, ropes are sleeved on the lifting lugs respectively, the ropes are pulled manually to enable the main shaft of the water turbine to rotate, personnel need to enter the supporting cover, the alignment condition is observed, the personnel outside the supporting cover are instructed to pull the ropes, and the main shaft of the water turbine and the rotating wheel are aligned accurately.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811384638.4A CN109484974B (en) | 2018-11-20 | 2018-11-20 | Method for mounting axial-flow propeller turbine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811384638.4A CN109484974B (en) | 2018-11-20 | 2018-11-20 | Method for mounting axial-flow propeller turbine |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109484974A CN109484974A (en) | 2019-03-19 |
| CN109484974B true CN109484974B (en) | 2020-01-10 |
Family
ID=65697029
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811384638.4A Active CN109484974B (en) | 2018-11-20 | 2018-11-20 | Method for mounting axial-flow propeller turbine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109484974B (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2005054593A (en) * | 2003-08-05 | 2005-03-03 | Fuji Voith Hydro Kk | Runner disassembling method of vertical shaft bulb turbine generator |
| CN101109356A (en) * | 2007-08-22 | 2008-01-23 | 天津市天发重型水电设备制造有限公司 | Install method of large-scale axial flow type hydro-turbo generator set |
| CN101196001A (en) * | 2008-01-07 | 2008-06-11 | 四川东风电机厂有限公司 | Installing method for shaft extending through-flow turbine |
| CN203284052U (en) * | 2013-05-22 | 2013-11-13 | 东方电气集团东方电机有限公司 | Snap ring for hoisting and hanging runner for movable propeller turbine |
| CN104176619A (en) * | 2013-05-22 | 2014-12-03 | 东方电气集团东方电机有限公司 | Axial-flow kaplan turbine rotating-wheel hoisting and suspension method |
| CN108087181A (en) * | 2017-12-13 | 2018-05-29 | 重庆水轮机厂有限责任公司 | A kind of hydraulic turbine rotating part integral installation method |
-
2018
- 2018-11-20 CN CN201811384638.4A patent/CN109484974B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2005054593A (en) * | 2003-08-05 | 2005-03-03 | Fuji Voith Hydro Kk | Runner disassembling method of vertical shaft bulb turbine generator |
| CN101109356A (en) * | 2007-08-22 | 2008-01-23 | 天津市天发重型水电设备制造有限公司 | Install method of large-scale axial flow type hydro-turbo generator set |
| CN101196001A (en) * | 2008-01-07 | 2008-06-11 | 四川东风电机厂有限公司 | Installing method for shaft extending through-flow turbine |
| CN203284052U (en) * | 2013-05-22 | 2013-11-13 | 东方电气集团东方电机有限公司 | Snap ring for hoisting and hanging runner for movable propeller turbine |
| CN104176619A (en) * | 2013-05-22 | 2014-12-03 | 东方电气集团东方电机有限公司 | Axial-flow kaplan turbine rotating-wheel hoisting and suspension method |
| CN108087181A (en) * | 2017-12-13 | 2018-05-29 | 重庆水轮机厂有限责任公司 | A kind of hydraulic turbine rotating part integral installation method |
Non-Patent Citations (2)
| Title |
|---|
| "轴流转桨式水轮机转轮整体吊装的方法和特点";张延锋等;《西北水电》;20080430(第2期);第45-48页 * |
| "铜街子电站水轮机增容改造特点及施工工艺";王恩重等;《水电与新能源》;20150831(第8期);第38-41页 * |
Also Published As
| Publication number | Publication date |
|---|---|
| CN109484974A (en) | 2019-03-19 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103545751A (en) | Overhead power transmission line ground-wire optical-cable fitting replacement bracket | |
| CN208292485U (en) | TBM headstock turnniing over and lifting device | |
| CN115465768B (en) | Large-scale bearing hoisting device | |
| CN110273039B (en) | Blast furnace surrounding pipe hoisting structure and installation method thereof | |
| CN104668933B (en) | Disassembling and assembling method for rotating arm and pivot of turbine runner | |
| CN109484974B (en) | Method for mounting axial-flow propeller turbine | |
| CN206336964U (en) | A kind of support top formula lifting pipeline apparatus and system | |
| CN202864675U (en) | Shaft-type part hoisting tool | |
| CN202483781U (en) | Water turbine rotating wheel supporting device | |
| CN214899827U (en) | High-altitude outdoor cable terminal operation platform | |
| CN209815490U (en) | Hoisting device for rotor magnetic pole in hydraulic generator pit | |
| CN102423847B (en) | Method for assembling axial-flow movable-blade type hydraulic turbine and support device adopted by axial-flow movable-blade hydraulic turbine | |
| CN202657829U (en) | Hoisting in place device for fixing branch hinge of arc gate | |
| CN112499486A (en) | Portable transformer lifter and operation method thereof | |
| CN207330112U (en) | A kind of device for improving large rotor bearing shell overhaul efficiency | |
| CN213802525U (en) | Hoisting device for rotor of large-scale generator motor | |
| CN108100848A (en) | The safe hoisting tool of large-scale movable propeller turbine runner crosshead and lifting technique | |
| CN218968688U (en) | Tile turning device for overhauling steam turbine | |
| CN216971707U (en) | Suspension arm tool | |
| CN215711309U (en) | Special disassembling tool for box type inverter alternating current cooling fan | |
| CN219412790U (en) | Wind driven generator blade replacement equipment based on multiple pulley blocks | |
| CN219526055U (en) | T-shaped steel mounting structure | |
| CN112047249B (en) | Sling for weight below 300 kg in narrow space | |
| CN219031505U (en) | Special lifting appliance for lifting large vertical centrifugal pump of nuclear power station | |
| CN220358985U (en) | Special tool for dismounting magnetic poles of rotor of hydraulic generator |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 614900 central control building, Hekou Road, Shawan Town, Shawan District, Leshan City, Sichuan Province Patentee after: Guoneng Daduhe maintenance and installation Co.,Ltd. Address before: 614900 central control building, Hekou Road, Shawan Town, Shawan District, Leshan City, Sichuan Province Patentee before: GUODIAN DADUHE MAINTENANCE & INSTALLATION Co.,Ltd. |
|
| CP01 | Change in the name or title of a patent holder |