CN117211662A - Mounting ladder for runner lifting appliance of water turbine - Google Patents
Mounting ladder for runner lifting appliance of water turbine Download PDFInfo
- Publication number
- CN117211662A CN117211662A CN202311210042.3A CN202311210042A CN117211662A CN 117211662 A CN117211662 A CN 117211662A CN 202311210042 A CN202311210042 A CN 202311210042A CN 117211662 A CN117211662 A CN 117211662A
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- China
- Prior art keywords
- ladder
- cat
- cat ladder
- upper portion
- hydraulic turbine
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title abstract description 16
- 241000282326 Felis catus Species 0.000 claims abstract description 66
- 238000009434 installation Methods 0.000 claims abstract description 6
- 229910000831 Steel Inorganic materials 0.000 claims description 9
- 239000010959 steel Substances 0.000 claims description 9
- 238000004804 winding Methods 0.000 claims description 3
- 238000003466 welding Methods 0.000 claims description 2
- 239000000203 mixture Substances 0.000 description 7
- 230000009193 crawling Effects 0.000 description 5
- 238000000034 method Methods 0.000 description 3
- 238000010276 construction Methods 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 208000027418 Wounds and injury Diseases 0.000 description 1
- 230000006399 behavior Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000006378 damage Effects 0.000 description 1
- 208000014674 injury Diseases 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
Classifications
-
- 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
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- Ladders (AREA)
Abstract
The application relates to a mounting cat ladder of a hydraulic turbine runner lifting tool, which aims to solve the problems that in the prior art, an operator ties a safety belt on the runner lifting tool to lift along with the runner lifting tool when a hydraulic turbine generator set is overhauled, and the operator lifts along with a hydraulic turbine main shaft rotating wheel together, so that the risk of personal falling exists; two safety rope stand installations are on the top of ladder, and the top of cat ladder upper portion connecting piece is installed on the ladder top, and two cat ladder bottom clamps are installed on the bottom of ladder, and cat ladder protects the cage lock and installs on the ladder, and the ladder top is on the hydraulic turbine spindle flange, and the ladder bottom is installed on the labyrinth ring recess on the hydraulic turbine. The application is used in the field of water turbine overhaul.
Description
Technical Field
The application relates to a crawling ladder, in particular to a crawling ladder for installing a runner lifting appliance of a water turbine, which is used for overhauling the water turbine.
Background
The hydro-generator is a generator which uses a water turbine as a prime motor to convert water energy into electric energy. When the water flow passes through the water turbine, the water energy is converted into mechanical energy, the rotating shaft of the water turbine drives the rotor of the generator, and the mechanical energy is converted into electric energy to be output. Is the main power equipment for generating electric energy in hydropower stations. When the class A of the small and medium-sized hydroelectric generating set is overhauled, the rotating wheel of the hydroelectric generating set is lifted out for overhauling. Before the lifting, the runner lifting appliance needs to be installed on the main shaft flange. The method comprises the following steps of: if the operator does not lift along with the wheel sling, then the ladder is used to ride on the upper edge of the wheel when the sling is installed. The operator climbs down the ladder from above the ground to above the wheel and at least four people go up. The operator pulls the cat ladder to the runner top, takes the cat ladder at main shaft flange edge, and two people hold the cat ladder, and two people follow on the cat ladder to the flange face on, carry out the installation of main shaft flange hoist. The crawling ladder is not easy to stabilize because of the arc-shaped main shaft flange and the wet sliding above the rotating wheel. The risk of operation is extremely high. Due to the restriction of the field environment, an operator installs a main shaft runner lifting appliance on a 200-ton lifting hook on the ground in advance during actual operation, then the operator binds a safety belt on the runner lifting appliance and lifts the safety belt along with the runner lifting appliance, the runner lifting appliance lifts the main shaft flange, and the operator installs the runner lifting appliance on the main shaft flange. After the installation, operators lift along with the main shaft rotating wheel of the water turbine, the lifting height exceeds 20 meters, personal falling risks exist, and personal injury risks can be caused once the hooks slide and the sliding hooks slide in the operation. In the whole construction process, operators stand on the lifting appliance to work, and the operation is dangerous, so that safety accidents occur, and therefore, the equipment is needed to solve the problems.
Disclosure of Invention
The application aims to solve the problem that in the prior art, when a hydroelectric generating set is overhauled, an operator binds a safety belt on a runner lifting tool to lift along with the runner lifting tool, the operator lifts along with a main shaft runner of a water turbine, and the risk of personal falling exists, and further provides a mounting crawling ladder for the runner lifting tool of the water turbine.
The technical scheme adopted for solving the technical problems is as follows:
a hydraulic turbine runner sling mounting ladder comprises a ladder, a ladder protection cage, a ladder upper connecting piece, two ladder bottom clamps and two safety rope stand columns; two safety rope stand installations are on the top of ladder, and the top of cat ladder upper portion connecting piece is installed on the ladder top, and two cat ladder bottom clamps are installed on the bottom of ladder, and cat ladder protects the cage lock and installs on the ladder, and the ladder top is on the hydraulic turbine spindle flange, and the ladder bottom is installed on the labyrinth ring recess on the hydraulic turbine.
Further, cat ladder upper portion connecting piece includes two cat ladder upper portion clamp pipes, and two cat ladder upper portion clamp pipes parallel arrangement, and the top fixed mounting of every cat ladder upper portion clamp pipe is at the top of ladder, and every cat ladder upper portion clamp pipe cartridge is in hydraulic turbine main shaft flange bolt hole.
Further, the clamp at the bottom of the cat ladder comprises an L-shaped connecting piece and two bolts, wherein a transverse plate of the L-shaped connecting piece is fixedly arranged on a landing leg at the bottom of the cat ladder, the two bolts are connected with a vertical plate of the L-shaped connecting piece in a threaded manner, the vertical plate of the L-shaped connecting piece and the bottom of the cat ladder are respectively positioned at two sides of the labyrinth ring, and the bolts are propped against the labyrinth ring.
Further, the cat ladder protects the cage and includes arc tube connecting rod and a plurality of arctube, and a plurality of arctubes are installed on the ladder along ladder length direction, and arc tube connecting rod and a plurality of arc tube fixed connection.
Further, the arc radius of the arc tube was 300mm.
Further, the legs on the ladder and the clamping tube at the upper part of the cat ladder have an included angle in the vertical direction, and the included angle ranges from 15 degrees to 45 degrees.
Further, a ladder nose is mounted on the ladder.
Further, the length of the clamp pipe at the upper part of the cat ladder is 300mm.
Further, the length of ladder is 4500mm, and the width of ladder is 500mm, and ladder top welding 800mm channel-section steel, two cat ladder upper portion card pipe welded mounting are on the channel-section steel, and the outside winding pyrocondensation area parcel of channel-section steel, cat ladder upper portion card pipe cover are equipped with pyrocondensation cover, and the length of safety rope stand is 1500mm, and safety rope stand and cat ladder upper portion card pipe parallel arrangement are equipped with safety belt bolt hanging hole on the safety rope stand.
The application has the beneficial effects that:
1. the ladder stand disclosed by the application is safe and stable, is convenient to disassemble and assemble, and is provided with the protection cage to protect the personal safety of operators during overhaul.
2. According to the application, the upper part of the cat ladder is fixed in a main shaft flange connecting bolt hole, the root of a cat ladder foot is fixed in a labyrinth ring groove on a water turbine by using a clamp, the cat ladder is provided with a cat ladder protection cage 2, and the upper part of the cat ladder is provided with a guardrail for bolting a safety belt. The safety of operators is ensured, and the illegal behaviors are eliminated. The clamp pipe on the upper portion of the cat ladder is inserted into the bolt hole of the main shaft flange to fix the upper portion of the cat ladder, the clamp on the bottom of the cat ladder is utilized to fix the lower portion of the cat ladder, the safety of the worker on and off the cat ladder is protected by the cat ladder protection cage 2, the safety belt is hung by the safety belt guard rail on the upper end of the cat ladder, and the safety of the worker in the operation of installing the rotating wheel lifting tool is ensured.
3. The cat ladder solves the safety problem encountered in the process of disassembly, assembly and maintenance of the turbine runner, and improves the efficiency of maintenance and construction.
Drawings
FIG. 1 is a schematic view of the present application disposed on a spindle flange.
Fig. 2 is a front view of the ladder of the present application.
Fig. 3 is a side view of the ladder stand.
Fig. 4 shows an enlarged view of the mounting of the upper connection piece 3 of the inventive ladder on the main shaft flange.
Fig. 5 is an enlarged view of the mounting of the ladder bottom fixture 4 of the present application on the labyrinth ring of the turbine.
Detailed Description
The first embodiment is as follows: referring to fig. 1-5, the present embodiment of a hydraulic turbine runner sling mounting ladder is described, which includes a ladder 1, a ladder cage 2, a ladder upper connector 3, two ladder bottom clamps 4, and two safety rope posts 5; two safety rope stands 5 are installed at the top of ladder 1, and the top of cat ladder upper portion connecting piece 3 is installed on ladder 1 top, and two cat ladder bottom clamps 4 are installed on the bottom of ladder 1, and cat ladder protects 2 lock to be installed on ladder 1, and ladder 1 top is on the hydraulic turbine spindle flange, and ladder 1 bottom is installed on the labyrinth ring recess on the hydraulic turbine.
The second embodiment is as follows: referring to fig. 1 and fig. 4, this embodiment is described in this embodiment, a hydraulic turbine runner hoist installs cat ladder, and cat ladder upper portion connecting piece 3 includes two cat ladder upper portion clamp pipes, and two cat ladder upper portion clamp pipes parallel arrangement, and the top fixed mounting of every cat ladder upper portion clamp pipe is at the top of ladder 1, and every cat ladder upper portion clamp pipe cartridge is in hydraulic turbine main shaft flange bolt hole. The embodiment has the advantages of simple and reliable structure, convenient processing and low manufacturing cost.
And a third specific embodiment: referring to fig. 1 and 5, the present embodiment of a hydraulic turbine runner sling mounting ladder is described, where the ladder bottom fixture 4 includes an L-shaped connector and two bolts, a cross plate of the L-shaped connector is fixedly mounted on a leg at the bottom of the ladder 1, two bolts are screwed to a riser of the L-shaped connector, the riser of the L-shaped connector and the bottom of the ladder 1 are respectively located at two sides of the labyrinth ring, and the bolts are propped against the labyrinth ring. Other compositions and connection modes are the same as in the first embodiment.
The specific embodiment IV is as follows: referring to fig. 1-3, the present embodiment of a hydraulic turbine runner sling mounting ladder stand is described, where a ladder stand protection cage 2 includes an arc tube connecting rod and a plurality of arc tubes, the plurality of arc tubes are mounted on a ladder 1 along a length direction of the ladder 1, and the arc tube connecting rod is fixedly connected with the plurality of arc tubes. Other compositions and connection modes are the same as in the first embodiment.
Fifth embodiment: referring to fig. 1-3, the present embodiment of a hydraulic turbine runner sling mounting ladder is described, where the arc radius of the arc-shaped pipe is 300mm. Other compositions and connection modes are the same as those of the fourth embodiment.
Specific embodiment six: referring to fig. 1-3, the present embodiment of a hydraulic turbine runner sling mounting ladder is described, wherein the legs on the ladder 1 and the clamping tube on the upper portion of the ladder have an included angle in the vertical direction, and the included angle ranges from 15 ° to 45 °. Other compositions and connection modes are the same as those of the fourth embodiment.
Seventh embodiment: referring to fig. 1 to 3, a description will be given of the present embodiment, in which a hydraulic turbine runner sling mounting ladder is provided, and a ladder sling nose 6 is mounted on a ladder 1. Other compositions and connection modes are the same as in the first embodiment.
Eighth embodiment: referring to fig. 1-3, the present embodiment of a hydraulic turbine runner sling mounting ladder is described, where the length of a clamping tube at the upper part of the ladder is 300mm. Other compositions and connection modes are the same as those of the second embodiment.
Eighth embodiment: this embodiment is explained in combination with fig. 1-3, this embodiment a hydraulic turbine runner hoist installs cat ladder, and the length of ladder 1 is 4500mm, and the width of ladder 1 is 500mm, and 800mm channel-section steel is welded at ladder 1 top, and two cat ladder upper portion card pipe welded mounting are on the channel-section steel, and the outside winding pyrocondensation area parcel of channel-section steel, cat ladder upper portion card pipe cover are equipped with pyrocondensation cover, and the length of safety rope stand 5 is 1500mm, and safety rope stand 5 and cat ladder upper portion card pipe parallel arrangement are equipped with safety rope bolt hanging hole on the safety rope stand 5. Other compositions and connection modes are the same as in the first embodiment.
Principle of operation
The ladder is lifted to the upper part of the main shaft flange by a crane, the clamping pipe at the upper part of the ladder is aligned with the main shaft flange hole, the crane hook slowly falls back, the clamping pipe is inserted into the main shaft flange hole, the clamp 4 at the bottom of the ladder is aligned with the labyrinth ring groove on the water turbine to screw the fixing bolt, and the installation of the ladder is completed. The operator installs the runner lifting appliance up and down by using the crawling ladder.
The present application is not limited to the preferred embodiments, but is capable of modification and variation in detail, and other embodiments, such as those described above, of making various modifications and equivalents will fall within the spirit and scope of the present application.
Claims (9)
1. The utility model provides a hydraulic turbine runner hoist installation cat ladder which characterized in that: the ladder comprises a ladder (1), a ladder stand protection cage (2), a ladder stand upper connecting piece (3), two ladder stand bottom clamps (4) and two safety rope stand columns (5); two safety rope stands (5) are installed at the top of ladder (1), and the top of cat ladder upper portion connecting piece (3) is installed on ladder (1) top, and two cat ladder bottom fixture (4) are installed on the bottom of ladder (1), and cat ladder protection cage (2) lock is installed on ladder (1), and ladder (1) top is on the hydraulic turbine spindle flange, and on the labyrinth ring recess was installed on the hydraulic turbine in ladder (1) bottom.
2. The turbine runner sling mounting ladder of claim 1, wherein: the cat ladder upper portion connecting piece (3) includes two cat ladder upper portion clamp pipes, two cat ladder upper portion clamp pipes parallel arrangement, and the top fixed mounting of every cat ladder upper portion clamp pipe is at the top of ladder (1), and every cat ladder upper portion clamp pipe cartridge is in hydraulic turbine main shaft flange bolt hole.
3. The turbine runner sling mounting ladder of claim 1, wherein: the ladder bottom fixture (4) comprises an L-shaped connecting piece and two bolts, wherein a transverse plate of the L-shaped connecting piece is fixedly arranged on a supporting leg at the bottom of the ladder (1), the two bolts are connected with a vertical plate of the L-shaped connecting piece in a threaded manner, the vertical plate of the L-shaped connecting piece and the bottom of the ladder (1) are respectively positioned at two sides of the labyrinth ring, and the bolts are propped against the labyrinth ring.
4. The turbine runner sling mounting ladder of claim 1, wherein: the cat ladder protects cage (2) including arc tube connecting rod and a plurality of arctube, and a plurality of arctubes are installed on ladder (1) along ladder (1) length direction, and arc tube connecting rod and a plurality of arc tube fixed connection.
5. The turbine runner sling mounting ladder of claim 4, wherein: the arc radius of the arc tube was 300mm.
6. The turbine runner sling mounting ladder of claim 4, wherein: the legs on the ladder (1) and the clamping pipe at the upper part of the cat ladder have an included angle in the vertical direction, and the included angle ranges from 15 degrees to 45 degrees.
7. The turbine runner sling mounting ladder of claim 1, wherein: the ladder (1) is provided with a ladder hanging nose (6).
8. The turbine runner sling mounting ladder of claim 2, wherein: the length of the clamp pipe at the upper part of the cat ladder is 300mm.
9. The turbine runner sling mounting ladder of claim 1, wherein: the length of ladder (1) is 4500mm, and the width of ladder (1) is 500mm, and ladder (1) top welding 800mm channel-section steel, two cat ladder upper portion card pipe welded mounting are on the channel-section steel, and the outside winding pyrocondensation area parcel of channel-section steel, cat ladder upper portion card pipe cover are equipped with pyrocondensation cover, and the length of safety rope stand (5) is 1500mm, and safety rope stand (5) and cat ladder upper portion card pipe parallel arrangement are equipped with safety belt bolt hanging hole on the safety rope stand (5).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311210042.3A CN117211662A (en) | 2023-09-19 | 2023-09-19 | Mounting ladder for runner lifting appliance of water turbine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311210042.3A CN117211662A (en) | 2023-09-19 | 2023-09-19 | Mounting ladder for runner lifting appliance of water turbine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN117211662A true CN117211662A (en) | 2023-12-12 |
Family
ID=89045881
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202311210042.3A Pending CN117211662A (en) | 2023-09-19 | 2023-09-19 | Mounting ladder for runner lifting appliance of water turbine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN117211662A (en) |
-
2023
- 2023-09-19 CN CN202311210042.3A patent/CN117211662A/en active Pending
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