CN218780429U - Novel top cover pressure reduction and drainage structure of water turbine - Google Patents
Novel top cover pressure reduction and drainage structure of water turbine Download PDFInfo
- Publication number
- CN218780429U CN218780429U CN202223119263.3U CN202223119263U CN218780429U CN 218780429 U CN218780429 U CN 218780429U CN 202223119263 U CN202223119263 U CN 202223119263U CN 218780429 U CN218780429 U CN 218780429U
- Authority
- CN
- China
- Prior art keywords
- pressure reduction
- vertical section
- horizontal section
- top cover
- water turbine
- 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.)
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims description 15
- 230000006837 decompression Effects 0.000 claims abstract description 7
- 239000011248 coating agent Substances 0.000 claims description 12
- 238000000576 coating method Methods 0.000 claims description 12
- UONOETXJSWQNOL-UHFFFAOYSA-N tungsten carbide Chemical compound [W+]#[C-] UONOETXJSWQNOL-UHFFFAOYSA-N 0.000 claims description 11
- 239000004570 mortar (masonry) Substances 0.000 claims description 6
- 239000000805 composite resin Substances 0.000 claims description 5
- 241001640558 Cotoneaster horizontalis Species 0.000 claims 1
- 238000005299 abrasion Methods 0.000 abstract description 6
- 230000003628 erosive effect Effects 0.000 abstract description 5
- 235000017166 Bambusa arundinacea Nutrition 0.000 description 2
- 235000017491 Bambusa tulda Nutrition 0.000 description 2
- 241001330002 Bambuseae Species 0.000 description 2
- 235000015334 Phyllostachys viridis Nutrition 0.000 description 2
- 239000011425 bamboo Substances 0.000 description 2
- 238000005507 spraying Methods 0.000 description 2
- 229910001220 stainless steel Inorganic materials 0.000 description 2
- 239000010935 stainless steel Substances 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 238000013329 compounding Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000006378 damage Effects 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000010410 layer Substances 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 239000011241 protective layer Substances 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- 238000007711 solidification Methods 0.000 description 1
- 230000008023 solidification Effects 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
- WFKWXMTUELFFGS-UHFFFAOYSA-N tungsten Chemical compound [W] WFKWXMTUELFFGS-UHFFFAOYSA-N 0.000 description 1
- 229910052721 tungsten Inorganic materials 0.000 description 1
- 239000010937 tungsten Substances 0.000 description 1
Images
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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- Hydraulic Turbines (AREA)
Abstract
Novel top cap decompression drainage structures of hydraulic turbine. Along with the increase of the operation time, cavitation erosion and abrasion and the combined action of the cavitation erosion and the abrasion occur inside the pressure reduction drain pipe, and the service life of the top cover pressure reduction drain pipe is greatly shortened. The utility model discloses the constitution includes: the top cover (4) is fixedly provided with a plurality of pressure reduction drain pipes which are obliquely led out along the tangential direction of the rotating wheel; the pressure reduction drain pipe comprises a vertical section (1) and a horizontal section (2), and the vertical section is welded with the horizontal section; the vertical section is a square straight cylinder, and the horizontal section is of a circular tube structure. The utility model is used for the novel top cap decompression drainage of hydraulic turbine.
Description
The technical field is as follows:
the utility model belongs to the technical field of the water and electricity, concretely relates to novel top cap decompression drainage structures of hydraulic turbine.
Background art:
in recent years, with the development of water turbine technology, the water pressure in the upper crown cavity of the runner of the water turbine is relieved by arranging a pressure reducing drain pipe (also called a pressure equalizing pipe) on the top cover. The top cap sets up the wide use of decompression drain pipe, has effectively reduced the thrust load of generator, has played fine effect. However, with the increase of the operation time, cavitation erosion and abrasion and the combined action of the cavitation erosion and the abrasion occur in the pressure reduction drain pipe, the service life of the top cover pressure reduction drain pipe is greatly shortened, the maintenance cost is increased, and unnecessary risks (water sprayed after the pipe wall is abraded to affect a shear pin signal and other protection signals) are increased, so that a new structure is required to replace the traditional pressure reduction drain pipe.
Therefore, how to enhance the cavitation erosion resistance and the abrasion resistance of the unit pressure equalizing pipe is a problem which must be solved for guaranteeing the safe operation of the unit.
The utility model has the following contents:
an object of the utility model is to provide a novel top cap decompression drainage structures of hydraulic turbine to solve the problem that proposes among the above-mentioned background art.
The above purpose is realized by the following technical scheme:
the utility model provides a novel top cap decompression drainage structures of hydraulic turbine, its constitution includes: the top cover is fixedly provided with a plurality of pressure reduction drain pipes which are obliquely led out along the tangential direction of the rotating wheel;
the pressure reduction drain pipe comprises a vertical section and a horizontal section, and the vertical section is welded with the horizontal section;
the vertical section is a square straight cylinder, and the horizontal section is of a circular tube structure.
The novel top cover pressure-reducing drainage structure of the water turbine is characterized in that a tungsten carbide coating is arranged on a spray head on the inner wall of the square straight cylinder, and composite resin mortar is coated on the tungsten carbide coating.
The novel top cover pressure reduction and drainage structure of the water turbine is characterized in that a tungsten carbide coating is sprayed inside the horizontal section.
The novel top cover pressure-reducing and water-discharging structure of the water turbine is characterized in that a cover plate is in threaded connection with the top of the vertical section.
Has the advantages that:
1. the utility model discloses set up the pressure reduction drain pipe on the top cap, the pressure reduction drain pipe arranges that the direction draws forth for the tangential of following runner direction of rotation to one side, has reduced the resistance when rivers draw forth, can reduce the vibration of top cap, reduces the destruction degree of rivers to the pressure reduction drain pipe.
2. The vertical section of the utility model adopts a square straight cylinder, one side of the top connected with the horizontal pipe is provided with a hole, the hole is welded with the horizontal section, and then the tungsten carbide coating is sprayed on the inner wall; and spraying carbon coating tungsten on the inner wall of the stainless steel round pipe at the horizontal section. Before the vertical thick square pipe is welded with the horizontal section, a layer of composite resin mortar is coated on the inner wall of the thick square pipe, and a protective layer is added, so that the composite resin mortar has high hardness after solidification and high abrasion resistance, the water leakage of a unit is effectively reduced, and the working pressure of a leakage drainage system is reduced.
Description of the drawings:
FIG. 1 is a schematic structural view of the present invention;
fig. 2 is a top view of the present invention;
FIG. 3 is a schematic view of the internal structure of a square cylinder;
in the figure: 1. a vertical section; 2. a horizontal segment; 3. a cover plate; 4. a top cover; 5. a tungsten carbide coating; 6. and (3) compounding resin mortar.
The specific implementation mode is as follows:
example 1:
referring to fig. 1-2, a novel roof pressure reduction and drainage structure of a water turbine comprises: the top cover 4 is fixedly provided with a plurality of pressure reduction drain pipes which are obliquely led out along the tangential direction of the rotating wheel;
the pressure reduction drain pipe comprises a vertical section 1 and a horizontal section 2, and the vertical section is welded with the horizontal section;
referring to fig. 3, the vertical section be the square straight section of thick bamboo of 24 mm's of wall thickness stainless steel, square straight section of thick bamboo inner wall shower nozzle have tungsten carbide coating 5, and the tungsten carbide coating on scribble composite resin mortar 6, vertical section top threaded connection have apron 3, for detachable construction, the straight tube of detachable direct observation and the pipe wearing and tearing condition of managing, the horizontal segment be the pipe structure, the inside spraying of horizontal segment have the tungsten carbide coating.
Claims (4)
1. The utility model provides a novel top cap decompression drainage structures of hydraulic turbine, its constitution includes: the top cap, characterized by: a plurality of pressure reduction drain pipes are fixed on the top cover and are obliquely led out along the tangential direction of the rotating wheel;
the pressure reduction drain pipe comprises a vertical section and a horizontal section, and the vertical section is welded with the horizontal section;
the vertical section is a square straight cylinder, and the horizontal section is of a circular tube structure.
2. The novel roof pressure reduction and drainage structure of the water turbine as claimed in claim 1, wherein: the inner wall spray head of the square straight cylinder is provided with a tungsten carbide coating, and composite resin mortar is coated on the tungsten carbide coating.
3. The novel roof pressure-reducing and water-draining structure of the water turbine as claimed in claim 2, characterized in that: and a tungsten carbide coating is sprayed inside the horizontal section.
4. The novel roof pressure reduction and drainage structure of the water turbine as claimed in claim 3, wherein: the top of the vertical section is in threaded connection with a cover plate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223119263.3U CN218780429U (en) | 2022-11-24 | 2022-11-24 | Novel top cover pressure reduction and drainage structure of water turbine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223119263.3U CN218780429U (en) | 2022-11-24 | 2022-11-24 | Novel top cover pressure reduction and drainage structure of water turbine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN218780429U true CN218780429U (en) | 2023-03-31 |
Family
ID=85715224
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202223119263.3U Active CN218780429U (en) | 2022-11-24 | 2022-11-24 | Novel top cover pressure reduction and drainage structure of water turbine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN218780429U (en) |
-
2022
- 2022-11-24 CN CN202223119263.3U patent/CN218780429U/en active Active
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20231109 Address after: Inside the Dakquke Hydropower Station in Kashtash Township, Hotan County, Hotan Prefecture, Xinjiang Uygur Autonomous Region, 848000 Patentee after: XINJIANG HUADIAN HETIAN HYDROPOWER CO.,LTD. Address before: 830000 No. 946, qidaowan South Road, Shuimogou District, Urumqi City, Xinjiang Uygur Autonomous Region Patentee before: Xinjiang Huadian shaerbulak hydropower Co.,Ltd. |